CN217499040U

CN217499040U - Belt type squeezing filter for cow dung dehydration

Info

Publication number: CN217499040U
Application number: CN202220670784.9U
Authority: CN
Inventors: 杨光强; 赵志强; 吕胜; 胡文学; 江礼杰
Original assignee: Wuxi Kinghope Environmental Engineering Co ltd
Current assignee: Wuxi Kinghope Environmental Engineering Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-27
Anticipated expiration: 2032-03-25

Abstract

The invention discloses a belt type squeezing filter for cow dung dehydration, which comprises: the automatic material distribution device comprises a rack, a squeezing area, an even material distribution device, a synchronous tensioning device, a washing device, a filtrate collecting tank, a deviation rectifying and protecting device, a filter belt, a transmission device, a discharging device, an electric control system and a pneumatic control system, wherein the squeezing area comprises a single main squeezing roller and a plurality of counter pressing rollers, the filter belt is directly wrapped on the main squeezing roller, materials are uniformly distributed in the width direction of the filter belt after passing through the even material distribution device, and are squeezed and filtered through the squeezing area, and finally the materials are separated from the squeezed materials at the discharging device. The novel belt type squeezing and dewatering equipment can deeply dewater the cow dung, simultaneously keep the integrity of crude fiber in the cow dung, further reduce the water content by 3 to 5 percent in the original process, improve the service life of the filter belt by 1.5 times, and simultaneously can be used for other materials with high content of similar fibers, such as sludge dewatering and the like.

Description

Belt type squeezing filter for cow dung dehydration

Technical Field

The invention relates to a belt type squeezing filter for cow dung dehydration, which enables the water content of materials to be lower under the condition of ensuring that the shapes of the materials in cow dung are not damaged.

Background

With the great increase of the consumption of domestic dairy products, the breeding amount of the dairy cows is synchronously increased. However, with the development of the large modern cattle raising industry, the problem of environmental pollution caused by cow dung is increasingly serious. If the cattle manure is not actively treated and utilized, the development of cattle raising is necessarily limited by the national environmental protection policy.

Cow dung has a plurality of data utilization methods, such as: producing methane, producing high-quality organic fertilizer, using as cattle bedding material, and producing cow dung fuel. Wherein, the method for preparing organic fertilizer by aerobic fermentation of cow dung to improve soil and recycling the organic fertilizer as cow bed padding is a very promising green resource recycling method. The two utilization methods both require that the water content of the dehydrated cow dung is as low as possible, and also require that the crude fiber in the cow dung is not broken in the dehydration process.

At present, the dehydration of cow dung is mainly realized by screw extrusion pressing equipment. Although this kind of equipment can reach lower moisture content, can extrude the broken piece destruction with coarse fibre such as the forage that cow dung inside contained at the screw extrusion squeezing in-process, cause unfavorable to follow-up aerobic fermentation, also can't regard as cow bed bedding and padding recycle once more, cause the great waste of data. The screw extrusion pressing equipment has the problems of small yield, difficult maintenance, high failure rate and the like.

In the prior art, for example, in patent "sludge dewatering belt press filter", publication number: 105107251A, the prior art discloses a belt press filter for deep dehydration of sludge with water content of about 80%, the working principle is that the pressed matter is pre-dehydrated through a pre-pressing dehydration area to form a mud cake which allows the subsequent low-pressure pressing, and then further deep dehydration is carried out through a low-pressure pressing area and a high-pressure pressing area step by step. Although similar equipment can completely keep the crude fiber in the cow dung, the water content after treatment is higher, and the subsequent fermentation utilization is not facilitated. Meanwhile, due to the fact that the cow dung contains a large amount of rice hulls, straws and the like, compressibility is high, a filter belt is easy to wrap and fold when the traditional belt machine is used, the service life is generally short, and the equipment failure rate is high. Therefore, the equipment in the prior art can not ensure that the crude fiber in the cow dung is kept complete while the cow dung is deeply dehydrated.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to solve the problems of low water content required in the dehydration of the cow dung and the requirement of keeping the integrity of crude fibers in the cow dung at present, and simultaneously ensures that the equipment runs stably and the service life of a filter belt is long.

In order to achieve the purpose of the invention, the invention adopts the technical scheme that: provided is a belt press filter for cow dung dehydration, including: the automatic filter screen printing machine comprises a frame, a squeezing area, an even distributing device, a synchronous tensioning device, a flushing device, a filtrate collecting tank, a deviation rectifying and protecting device, a filter belt, a transmission device, a discharging device, an electrical control system and a pneumatic control system, wherein the squeezing area, the even distributing device, the synchronous tensioning device, the flushing device, the filtrate collecting tank, the deviation rectifying and protecting device, the filter belt, the transmission device, the discharging device, the electrical control system and the pneumatic control system are all installed on the frame, the even distributing device is arranged above the right side outside the frame, the synchronous tensioning device is arranged on the rightmost side inside the frame, the deviation rectifying and protecting device is arranged on the lower portion inside the frame, the transmission device is arranged on the leftmost side of the frame, and the synchronous tensioning device, the deviation rectifying and protecting device, the transmission device and the flushing device respectively provide tensioning relaxation, deviation rectifying, and pneumatic control for the filter belt, Conveying and cleaning functions; the material distribution device is characterized in that the squeezing area comprises a single main squeezing roller and a plurality of counter pressing rollers, the main squeezing roller is arranged in the middle of the frame, the counter pressing rollers are vertically arranged on the main squeezing roller, the filter belt is a single filter belt and directly wraps the main squeezing roller, the filter belt firstly passes through the uniform material distribution device and then drives materials to be transmitted, and then the filter belt sequentially passes through the squeezing area and the transmission device and is separated from the materials at the discharge device of the transmission device.

The belt type squeezing filter for cow dung dehydration is characterized in that the squeezing area provides required squeezing pressure for compressed air in the pressing roller, and the squeezing pressure is squeezing force perpendicular to the circle center of the main squeezing roller and is gradually increased along the transmission direction of the filter belt.

Foretell belt press filter for cow dung dehydration, its characterized in that, even distributing device comprises driving motor, two-way spiral, limit material mechanism, two-way spiral is through rotary motion with material evenly distributed, the direction of rotation of limit material mechanism and the horizontal motion of screen are relative and go.

The belt press filter for cow dung dewatering is characterized in that the flushing device is arranged on the filter belt which passes through the transmission device and is positioned below the inside of the frame, and the filter belt can be flushed in two continuous or indirect modes.

The belt type squeezing filter for cow dung dehydration is characterized in that the deviation rectifying and protecting device is provided with a sensing device transmitter, a deviation rectifying reversing valve, an air cylinder piston rod and a deviation rectifying roller, and when the filter belt deviates, the filter belt returns to a normal position through the deviation rectifying reversing valve, the air cylinder piston rod and the deviation rectifying roller; when the single-side deviation of the filter belt is larger than a set value, the induction device sends a signal to alarm and the system is stopped.

The belt type squeezing filter for cow dung dewatering is characterized in that the filtrate collecting tank is arranged below the main squeezing roller and is provided with a flow guide device for collecting flushing water and filtered water and intensively discharging the flushing water and the filtered water into a sewage pipe network.

The belt type squeezing filter for cow dung dehydration is characterized in that the transmission device consists of a speed reducer, a transmission roller and a bearing seat, and the outer surface of the transmission roller of the transmission device is coated with an abrasion-resistant rubber layer so as to increase the friction coefficient.

The belt press filter for cow dung dehydration is characterized in that the discharging device is arranged on the left side of the main press roll and the left side of the transmission roll of the transmission device.

Through the technical scheme, the following beneficial effects can be obtained:

the invention adopts the design that one filter belt is wrapped on a large-diameter squeezing roller, and abandons the traditional S-shaped or W-shaped multi-roller filter belt winding mode, so that the problems that the filter belt is easy to be wrapped and folded when the traditional belt machine is used and the service life is generally short can not occur when cow dung materials are treated, and meanwhile, the invention has the characteristics of compact structure, reliability and durability, capability of realizing continuous operation, simple operation, capability of effectively butting with the existing belt filter press, screw extruder and other equipment, small occupied area, less equipment modification investment, low treatment cost, low energy consumption and the like, can further reduce the water content by 3-5 percent under the original process condition, and improves the service life of the filter belt by 1.5 times. The invention can promote the cyclic utilization and the green resource treatment of cow dung, accords with the development direction of modern economy, low carbon and environmental protection, has strong universality and can be used for other materials with high content of similar fibers, such as sludge dewatering of paper mills and the like.

Description of the drawings:

FIG. 1 is a schematic view of a belt press filter according to an embodiment of the present invention.

FIG. 2 is a side view of a belt press filter structure according to an embodiment of the present invention.

In the figure: 1. the device comprises a rack, 2, a main squeezing roller, 3, a counter pressing roller, 4, an even distributing device, 5, a synchronous tensioning device, 6, a washing device, 7, a filtrate collecting tank, 8, a deviation rectifying and protecting device, 9, a filter belt, 10, a transmission device, 11, a discharging device, 12, an electrical control system, 13 and a pneumatic control system.

Detailed Description

The invention is further described in detail below with reference to the figures and specific examples.

The sludge dewatering belt press filter of this embodiment adopts the design of a neotype filter belt to have many of pressure adjustable to the compression roller system, take the structural design such as the reaction formula of taking simultaneously and rectify a deviation, the synchronous tensioning of rack and pinion, axle dress formula drive, high strength frame, form a neotype belt press dehydrator that is applicable to the material that long fiber content is high (like cow dung etc.). The detailed structural schematic diagram of the whole device is shown in fig. 1 and fig. 2.

[ example 1 ] A method for producing a polycarbonate

Component 1: frame

The carrier of complete equipment provides high-strength support guarantee for equipment, and all other parts are all installed on the frame.

Component 2: main press roll

The main press roller 2 is arranged in the middle of the frame, a carrier used when materials are pressed gives consideration to feeding and discharging of the materials, and a scraping plate is arranged at the discharging position to ensure that the roller surface is clean.

Component 3: opposite pressing roller

One end of the counter-pressure roller 3 is arranged on the frame 1 through a hinge, and the other end is provided with an air bag. When the air bag is inflated, the counter-pressing roll 3 can be pressed on the main pressing roll 2, a certain extrusion force is applied to the material, and the moisture in the material is extruded. The compressed air provides pressure, the extrusion force is adjustable, the extrusion force is generally gradually enhanced along the conveying direction of the filter belt 9, and the filter belt is suitable for various operating conditions.

Component 4: uniform distribution device

The part is a key part of the equipment, is arranged above the right side outside the rack and mainly comprises a driving motor, a bidirectional screw, a material limiting mechanism and the like. Two-way spiral is responsible for falling on the even distribution of material in the middle of the feed bin to the 9 width direction of cassette, and material limiting mechanism reverse rotation is responsible for flattening the arrangement of the material of level and unevenness, prevents simultaneously that bold material from getting into inside the 9 cassettes, plays the effect of protection cassette.

Component 5: synchronous tensioning device

The synchronous tensioning device 5 is used for tensioning the filter belt 9, is arranged at the rightmost side in the machine frame 1 and applies certain pressure to the filtered materials to enable the filtered materials to be pre-pressed and arranged. Mainly comprises a cylinder, a synchronous rack, a gear, a tensioning roller, a sliding block and the like. The tension pressure can be adjusted, and the filter belt 9 can also be loosened reversely.

Component 6: flushing device

The flushing device is arranged on the filter belt 9 which is positioned below the inner part of the rack 1 after completely passing through the transmission device, and the continuous or intermittent flushing filter belt can be selected in the working process of the equipment, so that the filter belt 9 is cleaned and regenerated, and the filtering capacity of the filter belt 9 is ensured to be normal.

Component 7: filtrating collecting vat

The filtrate collecting tank 7 is arranged below the main squeezing roller 2, and a flow guide device is arranged above the filtrate collecting tank 7 and mainly used for collecting filtered water and intensively discharging the filtered water into a sewage pipe network.

Component 8: deviation rectifying and protecting device

The deviation rectifying and protecting device 8 is arranged below the inner part of the frame, when the filter belt 9 deviates, the sensing device sends a signal, a corresponding reversing valve in the deviation rectifying air pressure loop reverses, a piston rod of the air cylinder acts, and the deviation rectifying roller forms a certain angle with the running direction of the filter belt, so that the deviation of the filter belt 9 is rectified and the filter belt returns to a normal position. When the deviation rectifying device fails and the deviation of the single side of the filter belt 9 is larger than a set value, the sensing device sends a signal, and the system stops and gives an alarm.

Component 9: filter belt

The filter belt 9 is designed by directly wrapping a single filter belt on the main press roll, is a filter carrier during material dehydration, and traps solid materials and discharges water at the same time. The filtration requirements of different materials can be met by selecting different filter belts 9.

Component 10: transmission device

The transmission device 10 is arranged at the leftmost side of the frame 1 and mainly comprises a speed reducer, a transmission roller, a bearing seat and the like. The outer surface of the driving roller is coated with a wear-resistant rubber layer to increase the friction coefficient and provide power for the operation of the filter belt.

Component 11: discharging device

The discharging device 11 is provided with a discharging device 11 at the position of the driving roller and the main press roller 2, and is used for discharging dewatered filter cakes and discharging the filter cakes out of the machine through a discharging plate.

Component 12: electrical control system

The electric control system 12 provides an execution circuit and a protection circuit for the material uniformly distributing device 4, the deviation rectifying and protecting device 8 and the transmission device 10, wherein the rotating speeds of the motors of the material distributing device 4 and the transmission device 10 can be adjusted in a variable frequency mode.

Component 13: pneumatic control system

The pneumatic control system 13 is provided with air source processing, lubricating, pressure regulating and reversing elements and provides qualified air sources for the compression roller 3, the synchronous tensioning device 5 and the deviation rectifying and protecting device 8.

[ example 2 ]

As shown in fig. 1, when the equipment works, the driving roller of the driving device 10 drives the filter belt 9 to transmit, the filter belt 9 firstly passes through the uniform distribution device 4, and at this time, the materials in the uniform distribution device 4 are uniformly distributed on the filter belt 9; the material is transmitted into the space between the main press roll 2 and the plurality of counter press rolls 3 of the press area along with the filter belt 9, and the water in the material in the press area is extruded out of the meshes of the filter belt 9 under the action of the extrusion force jointly exerted by the synchronous tensioning device 5 and the plurality of counter press rolls 3; the extruded water flows down freely and flows into a filtrate collecting tank 7 through a flow guide device, so that the water is collected and discharged; the material that has reduced moisture continues the transmission along with filter belt 9, through the scraper effect discharge apparatus of discharge apparatus 11, and the filter belt 9 of unloading the material at last passes through washing of washing unit 6 alone, gets into next round of filtered circulation of squeezing after accomplishing the clean regeneration of filter belt 9, has accomplished the working process of feeding, extrusion, unloading of material more than.

The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the protection scope of the present invention.

Claims

1. A belt press filter for cow dung dehydration comprises: the automatic cloth-distributing device comprises a rack, a squeezing area, a uniform cloth device, a synchronous tensioning device, a deviation-rectifying and protecting device, a filter belt, a transmission device and a discharging device, wherein the squeezing area, the uniform cloth device, the synchronous tensioning device, the deviation-rectifying and protecting device, the filter belt, the transmission device and the discharging device are all arranged on the rack; the method is characterized in that: the squeezing area comprises a single main squeezing roller and a plurality of counter-pressing rollers, the main squeezing roller is arranged in the middle of the frame, the counter-pressing rollers are vertically arranged on the main squeezing roller, the filter belt is a single filter belt and directly wraps the main squeezing roller, the filter belt firstly passes through the uniform material distribution device and then drives materials to be transmitted, and then the filter belt sequentially passes through the squeezing area and the transmission device and is separated from the materials at the discharge device of the transmission device.

2. The belt press filter for cow dung dewatering according to claim 1, wherein the pressing area provides a pressing pressure required for the compressed air in the press roll, and the pressing pressure is a pressing force perpendicular to the center of the main press roll and is gradually increased along the conveying direction of the filter belt.

3. The belt press filter for cow dung dewatering according to claim 1, wherein the uniform distribution device is composed of a driving motor, a bidirectional screw, and a material limiting mechanism, the bidirectional screw uniformly distributes the material by rotating, and the material limiting mechanism rotates in a direction opposite to the horizontal movement of the filter belt.

4. The belt press filter for cow dung dewatering according to claim 1, further comprising a washing device, wherein the washing device is disposed on the belt passing through the transmission device and located below the inside of the frame, and the belt can be washed in two modes, i.e., continuously or indirectly.

5. The belt press filter for cow dung dewatering according to claim 1, wherein the deviation rectifying and protecting device is provided with a sensing device transmitter, a deviation rectifying and reversing valve, an air cylinder piston rod and a deviation rectifying roller, and when the filter belt deviates, the filter belt returns to a normal position through the deviation rectifying and reversing valve, the air cylinder piston rod and the deviation rectifying roller; when the deviation of the single side of the filter belt is larger than a set value, the induction device sends a signal to alarm and the system is stopped.

6. The belt press filter for cow dung dewatering according to claim 1, further comprising a filtrate collecting tank disposed below the main press roll and provided with a flow guide device for collecting the washing water and the filtered water and discharging the collected water into a sewer network.

7. The belt press filter for cow dung dewatering of claim 1, wherein the transmission device is composed of a speed reducer, a transmission roller and a bearing seat, and the outer surface of the transmission roller of the transmission device is coated with an abrasion-resistant rubber layer to increase the friction coefficient.

8. The belt press filter for cow dung dewatering according to claim 1 or 7, wherein the discharging device is provided at a left side of the main press roll and a left side of the driving roll of the driving device.

9. The belt press filter for cow dung dewatering according to one of claims 1 to 7, characterized in that it further comprises an electrical control system and a pneumatic control system, the electrical control system provides an execution circuit and a protection circuit for the uniform material distribution device, the deviation rectifying and protecting device and the transmission device, wherein the motor rotation speed of the material distribution device and the transmission device can be adjusted in a variable frequency manner; the pneumatic control system is provided with air source processing, lubricating, pressure regulating and reversing elements and provides qualified air sources for the counter-pressure roller, the synchronous tensioning device and the deviation rectifying and protecting device.

10. The belt press filter for cow dung dewatering according to one of claims 1 to 7, wherein one end of the counter pressure roller is mounted on the frame through a hinge, and the other end is mounted with an air bag; when the air bag is inflated, the counter-pressing roller can press the main pressing roller, a certain extrusion force is applied to the materials, and moisture in the materials is extruded.