trommel screen maintenance

trommel screens

trommel screens

Vermeer trommel screens were designed for efficiency and ease of maintenance. The large feed hopper sits low to the ground, making it easy to feed material into the screening drum with a variety of loading equipment.

Vermeer trommel screens were designed for efficiency and ease of maintenance. The large feed hopper sits low to the ground, making it easy to feed material into the screening drum with a variety of loading equipment.

trommel screen longevity with preventative maintenance - international mining

trommel screen longevity with preventative maintenance - international mining

Preventative maintenance is essential to ensure the longevity of trommel screens. Multotec has had trommel screens running for over ten years that are still operational, Anthony Yell, Screening Product Manager, says. Customers can return trommel screens for refurbishment. The rubber lining is stripped off the steel structure, visually inspected for wear and then non-destructive testing carried out to determine the integrity of the trommel structure. If it is still within specification it can be shot-blasted and re-rubber lined, whereupon it will be good to go for many more years.

One of the biggest problems we have today with the larger trommel screens is the high wear rates of the screen media due to the high peripheral speed of the trommel screen itself. In addition, the trend towards larger mills means higher flow rates and velocities. Double the velocity on a polyurethane screen equates to an increase in the wear rate by a factor of five. We have invested extensive research and development into producing panels that last longer, as with large copper processing plants where the large tonnages mean an average run time of 12 to 14 weeks without any stoppages for panel change outs. It has been our objective to develop panels that will last that length of time.

Multotec has the added advantage of being able to supply polyurethane panels for smaller feed sizes where the main wear criteria is sliding abrasion and rubber panels where impact is the wear criteria. We design and manufacture both rubber and polyurethane panels in house. A recent trend in mineral processing has been that mills are tending to get bigger and therefore trommel screens are becoming larger as well. This can pose challenges in terms of acceptable life of screen media. However, we do have solutions for this.

The most important factor for us is understanding the trommel duty and the load coming off the end, because we have to design the front end of the trommel to be able to take this load. We have focused investment in developing designs for many years and our trommel screen designs have proven themselves to be exceptionally reliable. As long as they are maintained properly in terms of the rubber lining and panel replacement, then they will last a long time.

Multotec is the global leader in trommel screen design and manufacture and has been supplying the market for more than 20 years. We deal with most of the major mill manufacturers globally. It is a highly specialised segment that was developed in South Africa and Multotec has built a reputation that now enables us to supply internationally.

Multotec has manufacturing plants in South Africa and Chile and can also supply spare parts from South Africa, Australia, Chile and the US, which reduces the supply chain dramatically and extends its geographic footprint. We have supplied mill and scrubber trommel screens to the four corners of the earth, from South America to Papua New Guinea and Siberia to Kazakhstan. There are not many places where they are not prevalent as the Multotec product has proved to be highly reliable.

trommel screen maintenance and troubleshooting | lzzg

trommel screen maintenance and troubleshooting | lzzg

The shaftless trommel screen is mainly used for grading treatment of belt-shaped and entangled materials. It is used for the classification of refractory materials, coal, fertilizer, sand field stones, and the selection of coal, coke, white ash, placer gold, and other viscous materials to make the product structure more uniform to meet the production needs. Shaftless trommel screens are relatively more material-saving and have more room for screening materials. It is also easier to overhaul when the drum fails, so shaftless drum screens are also used very much. For example, it is used for pre-treatment of domestic garbage. It can screen out the required garbage. The advantage of shaftless is that it can avoid the entanglement of materials and the screening efficiency is relatively high. Operation and maintenance The trommel screen is reliable in operation and low in maintenance. The following points should be briefly noted during operation: 1. The drum screen must be turned on first, and then the feeding equipment should be turned on; the opposite is true when parking; 2. Before running, the fasteners of the drum screen should be inspected, and if loose, they should be fastened in time. In the future, the drum screen fasteners can be inspected and processed regularly (weekly or half-monthly); 3. The bearing seat and gearbox should be regularly checked for lubrication, and refueled and changed in time. The large shaft bearing adopts No. 2 lithium-based grease. Under normal circumstances, replenish the grease once every two months. The replenishment amount should not be too much, otherwise it will easily cause the bearing to overheat. Bearings should be cleaned and inspected once a year. 4. When the equipment is shut down for a long period of time (more than 30 days), the motor insulation should be shake-tested to avoid burning the motor. General troubleshooting Noise problems caused by loose bolts of trommel screen Solution: Re-tighten bolts or other fasteners; Wrong direction of rotation caused by wrong power cable connection of drum screen motor Solution: replace the power cable in the junction box; Click start delay problem caused by overload of drum screen motor or excessive delivery volume Solution: readjust the delivery volume; Inadequate ventilation or lack of lubricant in the drum screen box makes the gear box generate heat Solution: Check and adjust the heat dissipation of the vent and add lubricant; Drum screen motor heating problem Solution: 1. Reduce the load; 2. Tighten the connection; 3. Reconnect after checking. 4. Clean the heat sink of the motor; 5. Check whether the impeller of the drum screen fan is working properly to ensure smooth air circulation; Clogged screen holes prevent the drum screen from operating normally Solution: Clear the clogged garbage in time to reduce clogging.

The shaftless trommel screen is mainly used for grading treatment of belt-shaped and entangled materials. It is used for the classification of refractory materials, coal, fertilizer, sand field stones, and the selection of coal, coke, white ash, placer gold, and other viscous materials to make the product structure more uniform to meet the production needs.

Shaftless trommel screens are relatively more material-saving and have more room for screening materials. It is also easier to overhaul when the drum fails, so shaftless drum screens are also used very much. For example, it is used for pre-treatment of domestic garbage. It can screen out the required garbage. The advantage of shaftless is that it can avoid the entanglement of materials and the screening efficiency is relatively high.

Operation and maintenance The trommel screen is reliable in operation and low in maintenance. The following points should be briefly noted during operation: 1. The drum screen must be turned on first, and then the feeding equipment should be turned on; the opposite is true when parking; 2. Before running, the fasteners of the drum screen should be inspected, and if loose, they should be fastened in time. In the future, the drum screen fasteners can be inspected and processed regularly (weekly or half-monthly); 3. The bearing seat and gearbox should be regularly checked for lubrication, and refueled and changed in time. The large shaft bearing adopts No. 2 lithium-based grease. Under normal circumstances, replenish the grease once every two months. The replenishment amount should not be too much, otherwise it will easily cause the bearing to overheat. Bearings should be cleaned and inspected once a year. 4. When the equipment is shut down for a long period of time (more than 30 days), the motor insulation should be shake-tested to avoid burning the motor.

Drum screen motor heating problem Solution: 1. Reduce the load; 2. Tighten the connection; 3. Reconnect after checking. 4. Clean the heat sink of the motor; 5. Check whether the impeller of the drum screen fan is working properly to ensure smooth air circulation;

At present, the screening tools are mainly divided into fixed screen, rotary screen, vibrating screen and swing screen. Which screener is suit for domestic waste separation? Domestic waste refers to solid waste generated in daily life or activities that provide services for urban daily life, as well as solid waste that is regarded as urban domestic waste by laws and

The spiral classifier is used in the artificial sand production line and the commonly used classification equipment in the washing operation. It is mainly used to wash off the mud powder in the sand so that the artificial sand can reach the standard of construction sand. Some faults will inevitably occur during work and use. Here are some common fault

The gold washing trommel screen is very efficient in quickly screening large quantities of materials. In areas with high clay content, this sieve is also an essential gold mining tool. Gold, silver, lead zinc, tantalum-niobium, tin, and other rare and precious metal ores. Trommel screen structure The shaftless drum screen machine is mainly composed of motor, reducer, roller device, frame,

The shaftless trommel screen is suitable for sieving stone, sand, the garbage of various properties, and damp and easily clogged materials. The product under the sieve is 200mm, the middle is 20-40mm, and the thickness can be less than 5mm, with a self-cleaning device. The transmission mode is divided into three types: large and small gear transmission, sprocket chain transmission,

disadvantages of trommel screens | aggregates equipment, inc

disadvantages of trommel screens | aggregates equipment, inc

There are a number of available material screening solutions. Material specifications will dictate the type of screening equipment that is most efficient for the given process. Trommels are one of the most commonly deployed screens for a number of jobs from compost to municipal solid waste. However, despite their wide usage, trommel screens have a number of disadvantages that can make them less than ideal.

While trommels are frequently used to process materials, they do so inefficiently. Trommel screens are simple in design: a rotating cylindrical drum with perforation cavities which allow undersized material to pass through the screen.

The advantage of this design is a relatively lower cost. In fact, small, basic trommels can be made at home with relative ease. However, for heavy duty industrial applications, that same simplicity results in an overall inefficient design.

When compared to other solutions, like vibrating screens, trommels simply cannot handle the same volume of materials. While rotating, only a portion of the screen is being utilized for sizing. Comparatively, the entire screen surface of other material screening solutions can effectively size materials. This not only places the trommel drum at a volumetric disadvantage to other screening equipment, but can also lead to additional material flow concerns.

When screening multiple particle sizes or when material begins to back up, trommels also have the disadvantage of plugging. Plugging occurs when a larger feed material gets stuck in the screen aperture. This can lead to further plugging or back up of material traveling through the drum.

Much like plugging, when sorting wet materials, trommel screens are prone to blinding. As wet feed materials, such as compost or solid waste, pass through the rotating drum, they can begin to clump and stick to the screen. This can cause further materials to build-up, leading to less efficient sorting if not halting production.

Even when blinding does not require immediate attention, it still requires cleaning of the trommel and can lead to additional maintenance. Cleaning of the drum and replacing trunion wheels and cleaning brushes can be costly.

Plugging, blinding, or simply regular use can cause damage to the trommels drum. While some minor damage is to be expected and can be prevented through proper usage and care, larger damage can be costly. One of the biggest disadvantages of the trommel screens design is the inability to replace part of the drum when damage occurs.

Aggregates Equipment, Inc. manufactures screening solutions which overcome the disadvantages of trommel screens. The BIVITEC Screen operates using a flip-flow principle and features a dual-vibratory process which prevents clogging and blinding.

The BIVITEC is an ideal screening solution for applications commonly using trommel screens, including sorting C&D waste, roofing shingles, compost, and more. Contact our sales team to request a BIVITEC for your operation.

trommel bianna recycling

trommel bianna recycling

Trommels are used in a wide spectrum of applications in order to separate the organic material in urban and packaging treatment plants, not only to eliminate the voluminous material but also to separate inert material in compost refine plants.

Bianna Recycling offers a wide range of trommels with different diameters, screening lengths and plate thickness, depending on the equipment application: simple / double trommels for urban treatment plants, refine trommels, trommels for construction and demolition waste treatment facilities, etc.

01 Protections an sheet upper covering 02 Screening drum: sheet thickness (from 6 to 15 mm). Mesh size according to the screening request. 03 Wearing resistance wheels 04 Guide wheel 05 Gearmotor 06 Drum 07 Support strut 08 Access door to the inside of the equipment 09 Inspection window 10 Maintenance platforms 11 Access stairway 12 Anti-strip system (optional) 13 Bag-opening teeth 14 Exchangeable screening sheets.

Our trommels, sold worldwide for more than 25 years, guarantee our equipment efficiency and durability. They are distinguished by the fact they have security systems installed and all the access to the inside of the trommel are specifically designed to guarantee the cleaning and maintenance work to be as practical and fast as possible.

Equipment characterized by its robustness and wear resistance in demolition plants. Working with such waste is no easy task, so Bianna Recycling has designed very rugged equipments which are able to withstand the wear and abrasion this kind of waste involve.

maintenance of trommel screen

maintenance of trommel screen

Maintenance of Trommel Screen To extend the life of Trommel Screen, follow the maintenance and storage guidelines. 1.Perform the following maintenance daily. Grease the bearings on the drum wheel shafts and thrust wheels. Use multipurpose bearing grease. Check the vent screens in each motor. If the screens are clogged, brushed them off. 2.Perform the following maintenance weekly. Clean the material build-up in the Trommel drum weekly or as needed. Visually check the idler wheel surfaces for cracks or misalignment. Visually check the gearboxes for leaks. Visually check the screen attachment bolts for tightness. 3.Perform the following maintenance every six months. Grease the fittings on each motor. This requires approximately two pumps with a hand held grease gun. Change the gear box oil after the first 250 hours and every six months thereafter. Use 90 wt. gear oil. Grease the cleaning brush bearings on each shaft (if equipped). Use multipurpose bearing grease. 4.Screen Replacement To change a screen, unbolt the screen from the Trommel drum and lift it off. Install the new screen, and bolt in place. ------------------------------------------------------------------------- Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Beltconveyor, and Vibrating screen, Bucket elevator, Screw conveyor, Scraper conveyorusing the world's most advanced technology,we are willing to serve every company to meet your custom needs. our goal is "be the futureglobal leader of mining machinery industry". have any questions, please contact us without anyhesitation.

trommel screen maintenance manual | lzzg

trommel screen maintenance manual | lzzg

During the use process, the trommel screen runs slowly and evenly, with small impact vibration, stable operation and simple installation. It can be placed directly on a flat floor or floor and under the silo. The machine is easy to close and collect dust, has small maintenance, simple maintenance and long service life. Trommel screens are equipment commonly used in refractory materials, coal, river sand classification, and sand block classification. Do a good job of equipment maintenance to keep the drum screen in a good working condition and delay the service life of the equipment. watch trommel screen working videos Trommel screen maintenance Use the drum screen to do the part of the equipment reducer and support the lubrication of the bearing parts. The grease used in the roller screen bearing part is calcium-based grease, and the lubrication of the reducer part is periodically lubricated with 45# oil. The drum screen should be filled with grease before it leaves the factory. The user determines the lubrication cycle based on the specific operating conditions. The machine body has two lubrication parts, which are on the bearing block at the head and tail.It is strictly forbidden to make adjustments when the equipment is running, so as to avoid dangerous accidents. [1] Trommel screen should be maintained by personnel trained in equipment. [2] Equipment maintenance and repair must be carried out after parking. [3] Equipment management, maintenance personnel should always patrol the operation of the equipment, for example: whether the fasteners are reliable, whether the rotation is flexible or not. The dirt from the equipment blockage mechanism must be cleaned after the shift. [4] The machine can be evenly fed after normal operation. Under normal working conditions, the temperature rise of the bearing should not exceed 40 degrees Celsius. The highest temperature rise should not exceed 70 degrees Celsius. When the temperature exceeds the above temperature, stop immediately, and find out the cause and eliminate the fault in time. Before stopping, the feeding should be stopped first, and the motor should be turned off after the material in the drum screen is completely discharged. [5] After the drum screen has been running for a period of time, the dust cover must be opened to check whether the screen is damaged. If it is damaged, it needs to be repaired or replaced with a new screen, otherwise it will affect the product quality. Features of lzzg trommel screens The screen hole is not easy to block. Running smoothly and the noise is low. The structure is simple and the maintenance is convenient. The trommel drum cylinder can be closed, and easy to collect dust. Various plate and mesh sizes Screen drums made to customer specification.

During the use process, the trommel screen runs slowly and evenly, with small impact vibration, stable operation and simple installation. It can be placed directly on a flat floor or floor and under the silo. The machine is easy to close and collect dust, has small maintenance, simple maintenance and long service life. Trommel screens are equipment commonly used in refractory materials, coal, river sand classification, and sand block classification. Do a good job of equipment maintenance to keep the drum screen in a good working condition and delay the service life of the equipment.

Use the drum screen to do the part of the equipment reducer and support the lubrication of the bearing parts. The grease used in the roller screen bearing part is calcium-based grease, and the lubrication of the reducer part is periodically lubricated with 45# oil. The drum screen should be filled with grease before it leaves the factory. The user determines the lubrication cycle based on the specific operating conditions. The machine body has two lubrication parts, which are on the bearing block at the head and tail.It is strictly forbidden to make adjustments when the equipment is running, so as to avoid dangerous accidents.

[1] Trommel screen should be maintained by personnel trained in equipment. [2] Equipment maintenance and repair must be carried out after parking. [3] Equipment management, maintenance personnel should always patrol the operation of the equipment, for example: whether the fasteners are reliable, whether the rotation is flexible or not. The dirt from the equipment blockage mechanism must be cleaned after the shift. [4] The machine can be evenly fed after normal operation. Under normal working conditions, the temperature rise of the bearing should not exceed 40 degrees Celsius. The highest temperature rise should not exceed 70 degrees Celsius. When the temperature exceeds the above temperature, stop immediately, and find out the cause and eliminate the fault in time. Before stopping, the feeding should be stopped first, and the motor should be turned off after the material in the drum screen is completely discharged. [5] After the drum screen has been running for a period of time, the dust cover must be opened to check whether the screen is damaged. If it is damaged, it needs to be repaired or replaced with a new screen, otherwise it will affect the product quality.

The screen hole is not easy to block. Running smoothly and the noise is low. The structure is simple and the maintenance is convenient. The trommel drum cylinder can be closed, and easy to collect dust. Various plate and mesh sizes Screen drums made to customer specification.

The shaftless trommel screen is mainly used for grading treatment of belt-shaped and entangled materials. It is used for the classification of refractory materials, coal, fertilizer, sand field stones, and the selection of coal, coke, white ash, placer gold, and other viscous materials to make the product structure more uniform to meet the production needs. Shaftless trommel screens are relatively

At present, the screening tools are mainly divided into fixed screen, rotary screen, vibrating screen and swing screen. Which screener is suit for domestic waste separation? Domestic waste refers to solid waste generated in daily life or activities that provide services for urban daily life, as well as solid waste that is regarded as urban domestic waste by laws and

The gold washing trommel screen is very efficient in quickly screening large quantities of materials. In areas with high clay content, this sieve is also an essential gold mining tool. Gold, silver, lead zinc, tantalum-niobium, tin, and other rare and precious metal ores. Trommel screen structure The shaftless drum screen machine is mainly composed of motor, reducer, roller device, frame,

The shaftless trommel screen is suitable for sieving stone, sand, the garbage of various properties, and damp and easily clogged materials. The product under the sieve is 200mm, the middle is 20-40mm, and the thickness can be less than 5mm, with a self-cleaning device. The transmission mode is divided into three types: large and small gear transmission, sprocket chain transmission,

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