Sludge filtration and purification equipment for sludge treatment

Abstract

The present application relates to the technical field of sludge filtration, and particularly relates to a sludge filtration and purification equipment for sludge treatment; the structure comprises: a belt filter press body, comprising a rack, a plurality of squeezing rollers, a first filter belt and a second filter belt which are arranged on the outer wall of the periphery of the squeezing rollers and are driven; two stirring assemblies are arranged on the two sides of the rack and can respectively rotate and stir the sludge in the gap between the first filter belt and the second filter belt; the present application is provided with two stirring assemblies, when the sludge enters the gap between the first filter belt and the second filter belt, the loose sludge will become hardened sludge along with the filtration, the stirring assembly is started and extended to the inside of the hardened sludge, the squeezing roller drives the stirring assembly to rotate, and then the hardened sludge is stirred into pieces, the hardened sludge can be stirred into pieces, and then the subsequent filtration is carried out, the water in the sludge can be fully filtered out, and the water locking content of the hardened sludge can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge filtration, and particularly relates to a sludge filtration and purification equipment for sludge treatment. BACKGROUND

[0002] Sludge is solid precipitated matter generated in a water and sewage treatment process, is generally thick material, is in a state between solid and liquid, and has a high water content. However, the sludge cannot be separated into solid and liquid by natural sedimentation. At present, a filter press is generally used to filter the sludge, so that the sludge is filtered. After the filtration, the water content of the sludge is greatly reduced, which is beneficial to subsequent treatment of the sludge.

[0003] A belt filter press boosting mechanism for sludge dewatering is disclosed in a Chinese utility model patent with the publication number CN210506019U. The boosting mechanism is provided with an additional boosting belt in a pressing area of a conventional belt filter press, so that the pressing force applied by the filter belt assembly in the pressing area to the sludge cake is increased, and more water in the sludge cake is removed, so that the water content of the sludge cake is reduced. However, after the continuous filtration, the sludge is changed from loose sludge to hardened sludge. The hardened sludge locks a part of water in the interior of the hardened sludge. When a large pressure is applied to the water in the interior of the hardened sludge, the water is filtered out in part, but the hardened sludge becomes more compact, which is not conducive to the subsequent filtration. In addition, the parts are always operated under a large pressure, which accelerates the abrasion. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application aims to provide a sludge filtration and purification equipment for sludge treatment. Two stirring assemblies are arranged to extend into the interior of the hardened sludge, so that the hardened sludge is stirred into pieces. After the hardened sludge is stirred into pieces, the subsequent filtration is performed, so that the water in the sludge is sufficiently filtered out, and the water locking content of the hardened sludge is reduced. In order to achieve the above-mentioned purpose, the present application is implemented by the following technical scheme:

[0005] The present application provides a sludge filtration and purification equipment for sludge treatment, which comprises:

[0006] The belt filter press body comprises a rack, a plurality of pressing rollers, a first filter belt and a second filter belt which are arranged on the outer wall of the periphery of the pressing rollers and are driven.

[0007] The two stirring assemblies are arranged on the two sides of the rack and can respectively extend into the gap between the first filter belt and the second filter belt to rotate and stir the sludge.

[0008] As a further implementation manner, the stirring assembly has a stirring structure, which comprises a telescopic structure and a cavity arranged at the telescopic end of the telescopic structure, a plurality of through grooves are arranged on the outer circumferential sidewall of the cavity, and a stirring block is respectively slidably arranged in the inner cavity of each through groove; during stirring, the stirring blocks are in an extended state.

[0009] As a further implementation manner, a rod is arranged in the cavity, and a first spring is arranged between the stirring block and the rod.

[0010] As a further implementation manner, the cavity is filled with gas for controlling the extension or retraction of the stirring block.

[0011] As a further implementation manner, a soil loosening member composed of a drill bit is arranged at the front end of the cavity.

[0012] As a further implementation manner, the drill bit is slidably arranged in the cavity by arranging a piston, and the two stirring assemblies are symmetrically arranged; during stirring, the drill bits of the two stirring assemblies can abut against each other to compress the gas in the cavities of the two stirring assemblies, so as to control the extension of the stirring blocks.

[0013] As a further implementation manner, a sliding block is arranged on the drill bit, and a sliding groove is arranged on the cavity, and the sliding block and the sliding groove are in sliding cooperation.

[0014] As a further implementation manner, the method further comprises: a collecting assembly for collecting the falling sludge, the collecting assembly comprising a sludge receiving box and a collecting tank in communication with the sludge receiving box; a squeezing assembly for squeezing the sludge in the collecting tank; and a compression assembly arranged below the collecting tank, the sludge in the collecting tank being used to squeeze the compression assembly, so that the squeezing assembly is driven to squeeze the sludge in the collecting tank.

[0015] As a further implementation manner, the compression assembly is provided with a compression chamber, the compression chamber contains gas, the squeezing assembly is provided with a pneumatic telescopic column and a friction wheel connected with the pneumatic telescopic column, and the compression chamber is in communication with the pneumatic telescopic column; the sludge in the collecting tank is used to squeeze the gas in the compression chamber, so that the pneumatic telescopic column drives the friction wheel to be connected with the drive.

[0016] As a further implementation manner, an eccentric column is arranged on the friction wheel, a filter plate is arranged in the inner cavity of the collecting tank, and the eccentric column and the filter plate are connected through a connecting rod; under the driving of the friction wheel, the filter plate filters the sludge in the collecting tank.

[0017] The beneficial effects of the present application are as follows:

[0018] (1) The present application is provided with two stirring assemblies, when the sludge enters the gap between the first filter belt and the second filter belt, the loose sludge will become hardened sludge as the filter pressing proceeds, the stirring assembly is started to extend to the inside of the hardened sludge, the squeezing roller drives the stirring assembly to rotate, and then the hardened sludge is stirred into pieces, and the hardened sludge can be stirred into pieces before subsequent filter pressing, which can fully filter out the water in the sludge and reduce the water content of the hardened sludge.

[0019] (2) The cavity provided at the extension end of the telescopic structure is directly inserted into the gap between the first filter belt and the second filter belt, and the stirring blocks provided on the outer peripheral wall can extend outward during stirring, which increases the stirring area and accelerates the efficiency of stirring the hardened sludge into pieces.

[0020] (3) The present application is provided with a soil loosening member at the front end of the cavity, which not only facilitates the extension of the stirring structure into the hardened sludge, but also controls the retraction distance of the soil loosening member into the cavity by adjusting the length of the two stirring structures, thereby controlling the gas pressure and finally adjusting the sliding distance of the stirring blocks, which is adjusted according to the actual thickness of the hardened sludge, so that the hardened sludge of different thicknesses can be dispersed, and the first filter belt and the second filter belt can be prevented from being damaged.

[0021] (4) The present application uses the weight of the collected sludge to drive the collection assembly to slide downward, and compresses the gas in the compression assembly, uses the compressed gas to drive the extrusion assembly to extend, so that the transmission part of the extrusion assembly and the stirring assembly are in contact, and then the stirring assembly drives the extrusion assembly to filter press the sludge collected in the collection assembly, after the filter pressing is completed, the sludge is discharged from the collection assembly, which not only can collect the falling sludge to prevent the sludge from falling into the water again, but also can filter press the collected sludge. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description, explain the present application. The present application is shown by way of illustration in the drawings and is not meant to be unduly limited thereto.

[0023] Figure 1 It is a schematic diagram of the overall structure of the sludge filter purification equipment in the embodiment of the present application;

[0024] Figure 2 It is Figure 1 the enlarged view of A in the above-mentioned figure;

[0025] Figure 3 It is a state diagram of the stirring assembly in the stop running state of the sludge filter purification equipment in the embodiment of the present application;

[0026] Figure 4State diagram of the stirring assembly in the sludge filtering and purifying equipment according to the embodiment of the present application in operation state;

[0027] Figure 5 Butt joint schematic diagram of the two stirring assemblies in working state according to the embodiment of the present application;

[0028] Figure 6 Sectional view schematic diagram of the stirring assembly according to the embodiment of the present application;

[0029] Figure 7 For Figure 6 Local enlarged view at B in the figure;

[0030] Figure 8 For Figure 7 Local enlarged view at C in the figure;

[0031] Figure 9 Disassembly schematic diagram of the telescopic structure and the stirring block according to the embodiment of the present application;

[0032] Figure 10 Disassembly schematic diagram of the telescopic structure and the soil loosening member according to the embodiment of the present application;

[0033] Figure 11 For Figure 10 Local enlarged view at D in the figure;

[0034] Figure 12 Installation position schematic diagram of the collecting assembly, the compressing assembly and the extruding assembly according to the embodiment of the present application;

[0035] Figure 13 Sectional view schematic diagram of the collecting assembly, the compressing assembly and the extruding assembly according to the embodiment of the present application.

[0036] In the figure: the mutual distance or size is exaggerated for showing the position of each part, and the schematic diagram is only for illustration.

[0037] Wherein: 1, rack; 2, feeding area; 3, squeezing roller; 4, stirring assembly; 41, fixed frame; 42, stirring structure; 421, telescopic structure; 422, fender; 423, cavity; 4231, chamber; 4232, chute; 424, stirring block; 4241, stirring block body; 4242, first spring; 425, soil loosening piece; 4251, drill bit; 42511, drill bit body; 42512, sliding block; 4252, piston; 4253, second spring; 426, rod piece; 427, through slot; 43, second transmission wheel; 5, first transmission wheel; 6, collection assembly; 61, collection box; 62, limiting plate; 63, L-shaped support; 64, electric telescopic column; 65, push plate; 66, mud receiving box; 67, slide; 68, motor; 69, rotating door; 7, compression assembly; 71, compression chamber; 72, compression plate; 73, third spring; 74, compression rod; 75, electronic air valve; 76, water collecting tank; 8, extrusion assembly; 81, pneumatic telescopic column; 82, friction wheel; 83, eccentric column; 84, filter pressing plate; 85, connecting rod; 86, weight block; 9, air pipe; 10, first filter belt; 20, second filter belt; 30, discharging area. DETAILED DESCRIPTION

[0038] It should be noted that the following detailed description is exemplary and is intended to provide further description of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0039] In a typical embodiment of the present application, referring to Figure 1 a sludge filtration and purification device for sludge treatment, comprising a belt filter body, a stirring assembly 4, a compression assembly 7 and an extrusion assembly 8.

[0040] As shown in Figure 1 and Figure 2 , the belt filter body comprises a rack 1, a feeding area 2, a discharging area 30, a plurality of squeezing rollers 3, and a first filter belt 10 and a second filter belt 20 drivenly arranged on the outer wall of the plurality of squeezing rollers 3. The plurality of squeezing rollers 3 are rotatably arranged on the rack 1, the feeding area 2 is arranged on one side of the upper end of the rack 1, and the discharging area 30 is arranged on the other side of the upper end of the rack 1.

[0041] The sludge is fed from the feeding area 2, then enters the gap between the first filter belt 10 and the second filter belt 20, and is driven by the first filter belt 10 and the second filter belt 20. Under the extrusion action of the first filter belt 10 and the second filter belt 20, the sludge is subjected to filter pressing, the water and water-soluble substances in the sludge are filtered out, and the filter-pressed sludge is discharged from the discharging area 30 and transported to the next process for treatment.

[0042] Two stirring assemblies 4 are arranged on both sides of the frame 1 and can respectively extend into the gap between the first filter belt 10 and the second filter belt 20 to rotate and stir the sludge.

[0043] The pressing roller 3 is fixedly installed with a first transmission wheel 5 at one end close to the stirring assembly 4, and the first transmission wheel 5 is in contact with the transmission part of the stirring assembly 4 to drive the stirring assembly.

[0044] When the sludge enters the gap between the first filter belt 10 and the second filter belt 20, the loose sludge will become hardened sludge as the filter pressing proceeds. Since the hardened sludge has a certain thickness, it will expand the gap between the first filter belt 10 and the second filter belt 20. At this time, the stirring assembly 4 is started to extend into the inside of the hardened sludge, and the pressing roller 3 drives the stirring assembly 4 to rotate through the first transmission wheel 5, so as to stir the hardened sludge into pieces. After the hardened sludge is stirred into pieces, it continues to be conveyed backward and is subjected to filter pressing by the first filter belt 10 and the second filter belt 20. The hardened sludge can be stirred into pieces and then subjected to subsequent filter pressing, so as to sufficiently filter out the water in the sludge and reduce the water locking content of the hardened sludge.

[0045] As shown in Figure 3 and Figure 4 , the stirring assembly 4 includes a second transmission wheel 43, a stirring structure 42, and a fixed frame 41. The fixed frame 41 is fixedly installed on the side wall of the frame 1, the stirring structure 42 is rotatably installed on the upper end of the fixed frame 41, the second transmission wheel 43 is fixedly sleeved on the outer wall of the stirring structure 42, and the first transmission wheel 5 is in contact with the second transmission wheel 43 to transmit power. Specifically, the first transmission wheel 5 and the second transmission wheel 43 are both gearless and meshed to transmit power.

[0046] As shown in Figures 5 to 9 , the stirring structure 42 includes a telescopic structure 421, a mud guard 422, cavities 423 and 424, soil loosening pieces 425, rod pieces 426, and through grooves 427.

[0047] As shown in Figure 5 and as shown in Figure 9 , the telescopic structure 421 is rotatably installed on the upper end of the fixed frame 41, and the cavity 423 is arranged at the extended end of the telescopic structure 421. In this embodiment, the cavity 423 is a cylindrical structure, a plurality of through grooves 427 are formed in the circumferential wall of the cylinder, the plurality of through grooves 427 are in communication with the cavity 423, and a plurality of stirring blocks 424 are slidably installed in the inner cavities of the plurality of through grooves 427. During stirring, the stirring blocks 424 are in an extended state.

[0048] The cavity 423 at the extension end of the telescopic structure 421 is arranged as a structure directly inserted into the gap between the first filter belt 10 and the second filter belt 20, and a plurality of stirring blocks 424 arranged on the outer peripheral wall of the cavity 423 can be extended outward during stirring, thereby increasing the stirring area and accelerating the efficiency of stirring the hardened sludge into pieces.

[0049] The stirring block 424 comprises a stirring block body 4241 slidingly arranged in the cavity of the through slot 427, and the stirring block body 4241 is elastically connected with the rod 426 through a first spring 4242. The first spring 4242 is arranged to reset the stirring block body 4241.

[0050] The cavity 423 is filled with gas for controlling the extension or retraction of the stirring block 424. In the embodiment, the gas is inert gas. In order to prevent the inert gas from leaking, the cavity 423 needs to have a good sealing state.

[0051] As shown in Figure 7 , a soil loosening member 425 is slidingly arranged in the front end cavity of the cavity 423. The soil loosening member 425 is arranged to facilitate the extension of the stirring structure 42 into the hardened sludge.

[0052] As shown in Figure 8 and Figure 10 , the soil loosening member 425 comprises a drill bit 4251 slidingly arranged in the cavity of the cavity 423 and a piston 4252 fixedly arranged on the inner side wall of the drill bit 4251. The piston 4252 is tightly fitted between the inner wall of the cavity 423, thereby playing a sealing role. When the inert gas is compressed, the piston 4252 prevents the inert gas in the cavity 423 from escaping. The piston 4252 is elastically arranged between the long rod 426 and the second spring 4253. The second spring 4253 is arranged to reset the soil loosening member 425.

[0053] As shown in Figure 5 , the two stirring assemblies 4 are symmetrically arranged. The drill bits 4251 of the two stirring assemblies 4 can abut each other to compress the gas in the cavity, thereby controlling the extension of the stirring block 424.

[0054] As shown in Figure 11 , the cavity 423 comprises a chamber 4231, and a pair of sliding grooves 4232 are formed in the inner wall of the inner cavity of the chamber 4231. The drill bit 4251 comprises a drill bit body 42511 and a pair of sliding blocks 42512 fixedly arranged on the outer peripheral wall of the drill bit body 42511. The sliding blocks 42512 are slidingly arranged in the inner cavities of the sliding grooves 4232. The sliding grooves 4232 and the sliding blocks 42512 are arranged in cooperation to limit the soil loosening member 425, so that the soil loosening member 425 can rotate together with the stirring structure 42 as a whole and drill into the hardened sludge.

[0055] After the device is started, the first transmission wheel 5 drives the stirring structure 42 as a whole to rotate through the second transmission wheel 43, at this time, the stirring structure 42 at both ends of the rack 1 is synchronously inserted into the hardening sludge, when the two loosening tools 425 on the stirring structure 42 abut, the stirring structure 42 is continuously controlled to be elongated, at this time, the loosening tool 425 will be retracted into the inner cavity of the cavity 423, and the inert gas in the cavity 423 is extruded, with the continuous increase of the gas pressure, the stirring block 424 will slide out of the through groove 427, since the stirring structure 42 is rotating at this time, the stirring block 424 will stir the hardening sludge in the gap between the first filter belt 10 and the second filter belt 20 into pieces, and in the subsequent filter pressing process, the water in the sludge can be sufficiently pressed out, so that the water locking content of the hardening sludge can be reduced.

[0056] By adjusting the length of the two stirring structures 42, the retraction distance of the loosening tool 425 into the cavity 423 can be controlled, and then the gas pressure of the inert gas can be controlled, and finally the sliding distance of the stirring block 424 can be adjusted, which can be adjusted according to the actual thickness of the hardening sludge, so that the hardening sludge of different thicknesses can be dispersed, and the first filter belt 10 and the second filter belt 20 can be prevented from being damaged.

[0057] When the sludge filtration is completed, the stirring structure 42 is extracted from the gap between the first filter belt 10 and the second filter belt 20, when the two loosening tools 425 are separated, the loosening tool 425 is reset, the gas pressure in the cavity 423 returns to normal, and the stirring block 424 is reset synchronously, at this time, the stirring block 424 is flush with the outer wall of the telescopic structure 421, and will not hinder the contraction of the stirring structure 42, so that the stirring end of the stirring structure 42 is protected, and the space is saved.

[0058] As shown in Figure 6 , the mud guard 422 is fixedly sleeved on the outer wall of the front end of the telescopic structure 421, and the falling of the sludge in the gap between the first filter belt 10 and the second filter belt 20 is reduced during stirring.

[0059] During the stirring process of the stirring assembly 4, part of the sludge will fall from the edge of the first filter belt 10 and the second filter belt 20. As shown in Figure 3 , in order to solve the technical problem, the collecting assembly 6, the compression assembly 7 and the extrusion assembly 8 are arranged.

[0060] As shown in Figure 12 and Figure 13As shown, the collecting assembly 6 includes a pair of limiting plates 62 fixedly installed on the top surface of the compression chamber 71 and a collecting box 61 inlaid and slidingly installed on the inner side wall of the two limiting plates 62, an L-shaped support 63 is fixedly installed on the outer wall of one side of the collecting box 61, an electric telescopic column 64 is fixedly installed on the L-shaped support 63, a push plate 65 is slidingly installed on the outer wall of one side of the collecting box 61, the output end of the electric telescopic column 64 is fixedly connected to the outer side wall of the push plate 65, a rotating door 69 is rotatably installed on the outer wall of the other side of the collecting box 61, a motor 68 is fixedly installed on the side wall of the collecting box 61, and the output end of the motor 68 is fixedly connected to the rotating door 69. A sludge receiving box 66 is arranged below the edge of the first filter belt 10 and the second filter belt 20, and the sludge receiving box 66 and the inner cavity of the collecting box 61 are communicated through a slide 67. The sludge falling into the sludge receiving box 66 will slide into the inner cavity of the collecting box 61 through the slide 67 for collection.

[0061] The compression assembly 7 includes a compression chamber 71 fixedly installed on the side wall of the rack 1 and a compression plate 72 slidingly installed in the inner cavity of the compression chamber 71. The inner cavity of the compression chamber 71 is filled with inert gas. The bottom surface of the compression plate 72 is elastically connected to the bottom surface of the inner cavity of the compression chamber 71 through a third spring 73. A compression rod 74 is fixedly installed on the top surface of the compression plate 72 and slidingly installed on the top surface of the compression chamber 71. An electronic gas valve 75 is communicated and arranged at the lower end of the side wall of the compression chamber 71. A pair of water collecting tanks 76 are arranged on the top surface of the compression chamber 71 for collecting the water filtered out by the sludge in the collecting assembly 6.

[0062] The extrusion assembly 8 includes a pneumatic telescopic column 81 fixedly installed on the side wall of the rack 1 and a friction wheel 82 rotatably installed on the output end of the pneumatic telescopic column 81. The pneumatic telescopic column 81 and the electronic gas valve 75 are communicated through the air pipe 9. An eccentric column 83 is fixedly installed on the outer side wall of the friction wheel 82. A filter plate 84 is slidingly installed in the inner cavity of the collecting box 61. The eccentric column 83 and the filter plate 84 are movably connected through a connecting rod 85. A weight block 86 is arranged on the outer side wall of the friction wheel 82 in a symmetrical position with the eccentric column 83.

[0063] When the stirring assembly 4 is stirring, some sludge will fall from the edges of the first filter belt 10 and the second filter belt 20 into the sludge receiving box 66, and some splashed sludge will also fall into the sludge receiving box 66 under the action of the mud guard 422, and then slide into the inner cavity of the collection box 61 through the slide 67 for collection. When the sludge collected in the inner cavity of the collection box 61 reaches a certain weight, the collection box 61 will slide downward. In the process of sliding downward, the collection box 61 will drive the compression plate 72 to compress the inert gas in the compression chamber 71 through the compression rod 74, start the electronic air valve 75, and the compressed inert gas enters the pneumatic telescopic column 81 through the air pipe 9, so that the pneumatic telescopic column 81 is elongated until the friction wheel 82 is flush with the position of the second transmission wheel 43, and then the electronic air valve 75 is closed. At this time, the friction wheel 82 and the second transmission wheel 43 are in contact with each other, the second transmission wheel 43 drives the friction wheel 82 to rotate, and the friction wheel 82 rotates to drive the compression plate 84 to reciprocate in the inner cavity of the collection box 61 through the eccentric column 83 and the connecting rod 85, so as to reciprocally compress the sludge collected in the collection box 61.

[0064] As the moisture content of the sludge in the collection box 61 becomes less and less, the collection box 61 will be reset by a distance under the elastic force of the third spring 73, so that the compression plate 84 can still exert a large pressure on the sludge in the collection box 61, which is beneficial to the compression of the sludge. The filtered water will be discharged from the water outlet hole on the bottom surface of the collection box 61 to the water collecting tank 76 for collection. When the compression is completed, the motor 68 is started to rotate the rotating door 69 to the open state, and then the electric telescopic column 64 is elongated to push the sludge in the inner cavity of the collection box 61 out of the rotating door 69. The electric telescopic column 64 drives the push plate 65 to reset, and the motor 68 rotates the rotating door 69 to the closed state. At this time, the collection box 61 is reset to the initial state, the electronic air valve 75 is opened, the compressed inert gas of the pneumatic telescopic column 81 flows back to the inner cavity of the compression chamber 71, the pneumatic telescopic column 81 drives the friction wheel 82 to separate from the second transmission wheel 43 and restore to the initial position, the electronic air valve 75 is closed, and then under the action of the weight block 86, the eccentric column 83 is always at the upper end of the friction wheel 82, and under the action of the eccentric column 83 and the connecting rod 85, the compression plate 84 is always at the upper end of the collection box 61. Therefore, the compression plate 84 will not block the connection between the slide 67 and the collection box 61, so that the sludge in the sludge receiving box 66 can smoothly slide to the collection box 61 through the slide 67 for collection. The above operation is repeated to realize continuous collection and compression of the falling sludge.

[0065] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A sludge filtration and purification device for sludge treatment, characterized in that, The utility model relates to a belt filter body, including frame, a plurality of squeeze rollers and the first filter belt and the second filter belt of drive setting on its peripheral outer wall, the first transmission wheel is fixedly installed to the one end of squeeze roller close to stirring subassembly, and the first transmission wheel is contacted with the transmission part of stirring subassembly, as the drive of stirring subassembly, Two stirring subassemblies are arranged on the both sides of the frame respectively, and rotate and stir sludge in the gap between the first filter belt and the second filter belt, the stirring subassembly includes a second transmission wheel, a stirring structure, and a fixed frame; the fixed frame is fixedly installed on the side wall of the frame, the stirring structure is rotatably installed on the upper end of the fixed frame, the second transmission wheel is fixedly sleeved on the peripheral outer wall of the stirring structure, the first transmission wheel is in contact with the second transmission wheel, and power transmission can be performed; the stirring subassembly has a stirring structure, the stirring structure includes an expansion structure and a cavity provided at the expansion end, a plurality of through grooves are formed in the peripheral side wall of the cavity, and a stirring block is slidably installed in each through groove; the cavity is filled with gas for controlling the extension or retraction of the stirring block, and the stirring block is in the extended state during stirring; A collecting assembly for collecting the falling sludge, the collecting assembly includes a sludge receiving box and a collecting tank in communication with the sludge receiving box; An extrusion assembly for extruding the sludge in the collecting tank; a compression assembly arranged below the collecting tank, the sludge in the collecting tank extrudes the compression assembly by the weight of the sludge, so that the extrusion assembly is connected to the second transmission wheel and performs the action of extruding the sludge in the collecting tank; The compression assembly is provided with a compression chamber, the compression chamber contains gas, the extrusion assembly is provided with a pneumatic telescopic column and a friction wheel connected thereto, the compression chamber is in communication with the pneumatic telescopic column, the gas in the compression chamber is extruded by the sludge in the collecting tank, so that the pneumatic telescopic column drives the friction wheel to be connected to the second transmission wheel; The friction wheel is provided with an eccentric column, the collecting tank is provided with a filter plate, and the eccentric column and the filter plate are connected by a connecting rod, and the filter plate filters the sludge in the collecting tank under the drive of the friction wheel. A rod is arranged in the cavity, and a first spring is arranged between the stirring block and the rod.

2. The sludge filtration and purification apparatus for sludge treatment according to claim 1, characterized by A soil loosening member composed of a drill bit is installed at the front end of the cavity.

3. The sludge filtration and purification apparatus for sludge treatment according to claim 1, characterized by The drill bit is slidably installed in the cavity by a piston, and the two stirring subassemblies are symmetrically arranged, and the drill bits of the two stirring subassemblies abut against each other to compress the gas in the cavities during stirring, so as to control the extension of the stirring blocks.

4. The sludge filtration and purification apparatus for sludge treatment according to claim 3, characterized by A sliding block is arranged on the drill bit, and a sliding groove is arranged on the cavity, and the sliding block and the sliding groove are in sliding cooperation.

5. The sludge filtration and purification apparatus for sludge treatment according to claim 4, characterized by ​

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