Solid waste treatment device for environmental protection engineering

Abstract

The invention relates to the technical field of solid waste treatment, in particular to a solid waste treatment device for environmental protection engineering, which comprises a feeding table, an extrusion mechanism and a receiving seat, the extrusion mechanism is mounted at the upper end of the receiving seat, and the feeding table is mounted at the upper end of the extrusion mechanism; a driving assembly in the extrusion mechanism drives a tamping assembly to conduct lower tamping extrusion on solid waste fragments from top to bottom, a telescopic assembly and a side pressing piece conduct multiple times of left and right side extrusion on the solid waste fragments, and a discharging assembly finally pushes and extrudes the solid waste fragments out of a discharging outlet. And all-around extrusion forming is carried out on solid waste fragments only through single driving, discharging is compact, and the extrusion forming effect is improved under the condition that the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment, and in particular to a solid waste treatment device for environmental protection engineering. Background Art

[0002] Environmental protection engineering refers to a series of engineering and technical measures to protect the environment, reduce pollution and restore ecological balance. Environmental protection engineering projects include sewage treatment, waste gas treatment, solid waste treatment and recycling. Papermaking waste, clothing and shoe factory scraps in solid waste are usually processed by industrial solid waste extrusion molding. This method mainly pre-treats the solid waste materials generated in the industrial production process through screening, crushing, drying, etc., and then extrude the crushed solid waste fragments through an extruder to form block products with a certain shape and strength; the existing extrusion equipment only extrude the solid waste fragments in a single direction, and thus cannot fully extrude the solid waste fragments. As a result, the solid waste fragments after extrusion molding are not compact enough and are easy to spread during transportation, and cannot achieve a good molding effect. Summary of the invention

[0003] Technical problem to be solved: The present invention provides a solid waste treatment device for environmental protection engineering, which can solve the problems pointed out in the above background technology.

[0004] Technical solution: In order to achieve the above purpose, the present invention adopts the following technical solution, a solid waste treatment device for environmental protection engineering, including a loading platform, an extrusion mechanism and a receiving seat, the upper end of the receiving seat is equipped with an extrusion mechanism, and the upper end of the extrusion mechanism is equipped with a loading platform.

[0005] An annular groove is provided on the upper end surface of the material receiving seat near the outer wall, and a discharge port is provided on the lower end surface of the annular groove. The material loading platform is an annular structure with a diameter gradually decreasing from top to bottom.

[0006] The extrusion mechanism includes an inner cylinder, which is installed at the center position of the upper end surface of the material receiving seat. A driving assembly is installed at the upper end of the inner cylinder, and a pounding assembly is arranged on the top of the driving assembly. An outer cylinder coaxial with the inner cylinder is also installed on the material receiving seat, and an annular cavity is formed between the outer cylinder and the inner cylinder. A plurality of side pressure members are evenly arranged in the annular cavity along its circumferential direction. The plurality of side pressure members divide the annular cavity into a plurality of extrusion cavities. A material discharge outlet is opened at a position corresponding to the extrusion cavity on the lower side of the outer wall of the outer cylinder. A plurality of telescopic members cooperating with the side pressure members to extrude the solid waste fragments into shape are arranged at the lower part of the driving assembly. The plurality of telescopic members are arranged from top to bottom. A material discharge assembly for pushing out the extruded solid waste fragments is also arranged at the lower part of the driving assembly.

[0007] Preferably, the drive assembly includes a mounting circular plate, which is mounted on the upper end of the inner cylinder. A mounting hole is opened in the middle of the mounting circular plate, a two-way cylinder is fixedly mounted in the mounting hole, and a linkage round rod is mounted on the lower telescopic end of the two-way cylinder.

[0008] Preferably, the tamping assembly comprises a disc, the lower end surface of which is mounted on the upper telescopic end of the bidirectional cylinder, the outer wall of the disc is evenly mounted with long strips along its circumferential direction, and a lower tamping rod is vertically mounted at the lower end of the long strip corresponding to the extrusion cavity.

[0009] Preferably, the outer wall of the lower tamping rod is provided with a plurality of outriggers from top to bottom, and the outriggers are all arranged obliquely downward.

[0010] Preferably, the side pressure member includes a fixing plate, and a fixing plate is evenly installed on the inner wall of the outer cylinder near the upper end surface along its circumferential direction, and the fixing plate is connected to the outer wall of the inner cylinder away from the outer cylinder. The fixing plate is a triangular structure, and an arc groove coaxial with the inner cylinder is opened at the lower end of the fixing plate and the upper end surface of the material receiving seat, and the upper arc groove corresponds to the lower arc groove one by one, and two round blocks are slidably installed in the arc groove, and a pressure plate is installed between the two round blocks symmetrically arranged above and below, and the pressure plate is arranged between the outer cylinder and the inner cylinder, and both ends of the pressure plate near the outer cylinder and the inner cylinder are arc-shaped to match them. Two pressure plates form a group, and multiple restoring springs are arranged above and below between the two pressure plates in the same group, and the opposite surfaces of the pressure plates are located at the lower side of the restoring springs and are penetrated from the outside to the inside by triangular through grooves, and two horizontally opposite triangular through grooves form a group.

[0011] Preferably, the telescopic assembly includes an overhanging block, and sliding grooves are provided through the outer wall of the inner cylinder at positions corresponding to a group of triangular through grooves, and an overhanging block is slidably arranged in the sliding groove. A matching block is installed on the overhanging block near one end of the inner cylinder, and two adjacent matching blocks are connected by a tension spring. A driving block 1 is fixedly sleeved and installed on the outer wall of the linkage round rod at positions corresponding to the telescopic assembly. The driving block 1 is a frustum structure with a diameter gradually decreasing from top to bottom, and the side of the matching block near the driving block 1 is an arc shape matching with it.

[0012] Preferably, the overhanging block is in the shape of a triangular prism with a width gradually increasing from the inside of the inner cylinder to the outside of the inner cylinder, and balls are evenly arranged on the outer wall of the overhanging block away from the inner cylinder.

[0013] Preferably, the unloading assembly includes a pushing block, and a through hole is opened on the lower side of the outer wall of the outer cylinder located in the extrusion cavity, and a pushing block is slidably arranged in the through hole. The pushing blocks located in the inner cylinder are connected by a telescopic spring, and a driving block 2 is fixedly sleeved and installed at a position corresponding to the outer wall of the linkage round rod and the pushing block. The driving block 2 is a frustum structure with a diameter gradually increasing from top to bottom, and the pushing block cooperates with the driving block 2 and the cooperating end of the pushing block is in an arc shape.

[0014] Beneficial effects:

[0015] 1. The driving component in the extrusion mechanism synchronously drives the pounding component to pound and extrude the solid waste fragments from top to bottom, the telescopic component and the side pressure piece then extrude the solid waste fragments on the left and right sides for multiple times, and the unloading component finally pushes the solid waste fragments out of the unloading outlet. Only a single drive is used to extrude and compact the solid waste fragments in all aspects, thereby improving the extrusion molding effect while reducing costs.

[0016] 2. The two-way cylinder drives the tamping assembly and the telescopic assembly and the unloading assembly on the linkage round rod to move up and down synchronously at the same time, so that the lower tamping rod moves up and down reciprocatingly to tamp and compress the solid waste fragments on the loading platform into the extrusion cavity, which can not only feed quickly, but also extrude the solid waste fragments from top to bottom. At the same time, the outward block drives the two pressure plates to move backwards and cooperate with the pressure plates in the adjacent side pressure parts to extrude the solid waste fragments in the extrusion cavity on both sides. In the process of gradually squeezing the solid waste fragments from top to bottom to the unloading outlet position, it will undergo multiple side extrusions, which improves the compaction effect and is not easy to loosen.

[0017] 3. The structure of the driving block 2 is opposite to that of the driving block 1. When the pressure plate returns to its original position after squeezing the side of the solid waste fragments, the pushing block extends out of the through hole to squeeze the solid waste fragments out of the discharge outlet, thereby realizing horizontal cross-staggered squeezing of the solid waste fragments without mutual interference, thereby improving the adequacy of the squeezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the inner cylinder and the side pressure piece of the present invention.

[0020] Figure 3 It is a front cross-sectional view of the present invention.

[0021] Figure 4 For the present invention Figure 3 A magnified view of area A.

[0022] Figure 5 For the present invention Figure 3 BB section view.

[0023] Figure 6 For the present invention Figure 3 CC section view.

[0024] Figure 7 For the present invention Figure 3 DD section view.

[0025] Figure 8 For the present invention Figure 6 Magnified view of area E.

[0026] Fig. 9 It is a structural schematic diagram of the overhanging block of the present invention.

[0027] In the figure: 1, loading platform; 2, extrusion mechanism; 21, inner cylinder; 22, driving assembly; 221, mounting circular plate; 222, two-way cylinder; 223, linkage round rod; 23, tamping assembly; 231, circular plate; 232, long strip plate; 233, lower tamping rod; 234, extension rod; 24, outer cylinder; 25, side pressure piece; 251, fixing plate; 252, arc groove; 253, round block; 254, pressing plate ; 255, restoring spring; 256, triangular through groove; 26, extrusion cavity; 27, material discharge outlet; 28, telescopic assembly; 281, overhanging block; 282, sliding groove; 283, matching block; 284, stretching spring; 285, driving block one; 286, ball bearing; 29, material discharge assembly; 291, pushing block; 292, telescopic spring; 293, driving block two; 3, material receiving seat; 31, annular groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1 The present invention provides a technical solution: a solid waste treatment device for environmental protection engineering, comprising a loading platform 1, an extrusion mechanism 2 and a receiving seat 3, wherein the upper end of the receiving seat 3 is equipped with the extrusion mechanism 2, and the upper end of the extrusion mechanism 2 is equipped with the loading platform 1.

[0030] An annular groove 31 is provided on the upper end surface of the receiving seat 3 near the outer wall, and a discharge port (not shown in the figure) is provided on the lower end surface of the annular groove 31. The loading platform 1 is an annular structure with a diameter gradually decreasing from top to bottom, and the solid waste fragments transported from the outside are collected and loaded through the loading platform 1.

[0031] See also Figure 2 , Figure 3The extrusion mechanism 2 includes an inner cylinder 21, which is installed at the center position of the upper end surface of the material receiving seat 3. A driving assembly 22 is installed at the upper end of the inner cylinder 21, and a pounding assembly 23 is arranged on the top of the driving assembly 22. An outer cylinder 24 coaxial with the inner cylinder 21 is also installed on the material receiving seat 3. An annular cavity is formed between the outer cylinder 24 and the inner cylinder 21. A plurality of side pressure members 25 are evenly arranged in the annular cavity along its circumferential direction. The plurality of side pressure members 25 divide the annular cavity into a plurality of extrusion cavities 26. A discharge outlet 27 is provided at the lower side of the outer wall of the outer cylinder 24 corresponding to the extrusion cavity 26. A plurality of telescopic assemblies 28 cooperating with the side pressure members 25 to extrude the solid waste fragments are arranged at the lower part of the driving assembly 22. The plurality of telescopic assemblies 28 are arranged from top to bottom. A discharge assembly 29 for pushing out the extruded solid waste fragments is also arranged at the lower part of the driving assembly 22.

[0032] See also Figure 3 The driving assembly 22 includes a mounting circular plate 221, which is mounted on the upper end of the inner cylinder 21. A mounting hole is opened in the middle of the mounting circular plate 221, in which a two-way cylinder 222 is fixedly mounted. A linkage round rod 223 is mounted on the lower telescopic end of the two-way cylinder 222, and a pounding assembly 23 is mounted on the upper telescopic end of the two-way cylinder 222. When working, the two-way cylinder 222 is started, and at the same time, the pounding assembly 23 and the linkage round rod 223 are driven to move up and down synchronously.

[0033] See also Figure 1 , Figure 3 The tamping assembly 23 includes a disc 231, the lower end surface of the disc 231 is installed on the upper telescopic end of the two-way cylinder 222, and the outer wall of the disc 231 is evenly installed with long strips 232 along its circumferential direction. The lower end of the long strips 232 is vertically installed with a lower tamping rod 233 at a position corresponding to the extrusion cavity 26, and the outer wall of the lower tamping rod 233 is provided with a plurality of outriggers 234 from top to bottom, and the outriggers 234 are all inclined downward. The tamping area and downward pressure are increased by the plurality of inclined outriggers 234. When working, the two-way cylinder 222 telescopes and drives the plurality of long strips 232 on the disc 231 to move up and down synchronously, so that the lower tamping rod 233 moves up and down reciprocatingly to tamp and compress the solid waste fragments on the loading platform 1 downward into the extrusion cavity 26, thereby enabling rapid feeding and extrusion of the solid waste fragments from top to bottom.

[0034] See also Figure 2 , Figure 3 , Figure 5 , Figure 7The side pressure member 25 includes a fixing plate 251. The fixing plates 251 are evenly installed along the circumferential direction of the inner wall of the outer cylinder 24 near the upper end surface. The fixing plates 251 are connected to the outer wall of the inner cylinder 21 on the side away from the outer cylinder 24. The fixing plates 251 are triangular in structure. The lower end of the fixing plate 251 and the upper end surface of the receiving seat 3 are both provided with an arc groove 252 coaxial with the inner cylinder 21. The upper arc groove 252 corresponds to the lower arc groove 252 one by one. Two round blocks 253 are slidably installed in the arc groove 252. The two round blocks 253 are symmetrical up and down. A pressure plate 254 is installed between them, and the pressure plate 254 is arranged between the outer cylinder 24 and the inner cylinder 21. Both ends of the pressure plate 254 close to the outer cylinder 24 and the inner cylinder 21 are arc-shaped to match them. The two pressure plates 254 between the upper and lower corresponding arc grooves 252 are a group. A plurality of restoring springs 255 are arranged above and below between the two pressure plates 254 in the same group. The opposite surface of the pressure plate 254 is located at the lower side of the restoring spring 255, and a triangular through groove 256 is opened from the outside to the inside. Two horizontally opposite triangular through grooves 256 are a group.

[0035] See also Figure 5 , Figure 6 , Figure 8 The telescopic assembly 28 includes an overhanging block 281, and a sliding groove 282 is provided through the outer wall of the inner cylinder 21 at the corresponding position of a group of triangular through grooves 256. The overhanging block 281 is slidably arranged in the sliding groove 282. The overhanging block 281 is in the shape of a triangular prism with a width gradually increasing from the inner side of the inner cylinder 21 to the outer side of the inner cylinder 21. The outer wall of the overhanging block 281 away from the inner cylinder 21 is evenly provided with balls 286, and the friction between the overhanging block 281 and the triangular through groove 256 is reduced by the balls 286 to reduce wear; the overhanging block 281 is installed with a matching block 283 at one end close to the inner cylinder 21, and the two adjacent matching blocks 283 are connected by a tension spring 284. The outer wall of the linkage round rod 223 and the corresponding position of the telescopic assembly 28 are fixedly sleeved with a driving block 285, and the driving block 285 is a gradually decreasing diameter from top to bottom. The truncated cone structure has an arc shape matching with the driving block 285 on one side of the matching block 283. When working, the bidirectional cylinder 222 drives the linkage round rod 223 to move up and down reciprocatingly, and simultaneously drives the driving block 285 to move up and down. The driving block 285 cooperates with the matching block 283 and the tension spring 284, so that the protruding block 281 can slide back and forth in the sliding groove 282. The protruding block 281 enters the triangular through groove 256 when extending. Due to the shape of the protruding block 281, the two pressure plates 254 in the same group are driven to move back and forth, thereby cooperating with the pressure plate 254 in the adjacent side pressure piece 25 to extrude the solid waste fragments in the extrusion cavity 26 on both sides. In addition, in the process of gradually squeezing the solid waste fragments from top to bottom to the position of the discharge outlet 27, it will undergo multiple side extrusions, thereby improving the compaction effect and preventing them from loosening.

[0036] See also Figure 4 , Figure 6 The material discharge assembly 29 includes a push block 291. A through hole is provided on the lower side of the outer wall of the outer cylinder 24 in the extrusion cavity 26. The push blocks 291 are slidably arranged in the through holes. The push blocks 291 in the inner cylinder 21 are connected by telescopic springs 292. A driving block 293 is fixedly sleeved and installed at a position corresponding to the outer wall of the linkage round rod 223 and the push block 291. The driving block 293 is a truncated cone structure with a diameter gradually increasing from top to bottom. The push block 291 cooperates with the driving block 293 and the mating end of the push block 291 is arc-shaped. Shape; when working, the two-way cylinder 222 drives the linkage round rod 223 to move up and down and reciprocates, and also drives the driving block 293 to move up and down. Since the structure of the driving block 293 is opposite to that of the driving block 1 285, when the pressure plate 254 in the telescopic component 28 is squeezed sideways, the pushing block 291 is located in the through hole and does not extend out. When the two-way cylinder 222 drives the pressure plate 254 to restore its original position, the driving block 293 squeezes the pushing block 291, so that the pushing block 291 extends out of the through hole to squeeze the solid waste fragments out of the discharge outlet 27.

[0037] During the specific work, the industrial solid waste needs to be pre-processed by screening, crushing, drying, etc., and the solid waste fragments transported from the external treatment are collected and loaded through the loading platform 1. The two-way cylinder 222 is started, and at the same time, the pounding component 23 and the linked round rod 223 are driven to move up and down synchronously. The two-way cylinder 222 is extended and retracted to drive the long strip 232 on the disc 231 to move up and down synchronously, so that the lower tamping rod 233 moves up and down reciprocatingly to pound and compress the solid waste fragments on the loading platform 1 into the extrusion cavity 26, so that the material can be fed quickly, and the solid waste fragments can be squeezed from top to bottom.

[0038] When the bidirectional cylinder 222 drives the linkage round rod 223 to move up and down, it drives the driving block 285 to move up and down. The driving block 285 cooperates with the matching block 283 and the tension spring 284, so that the protruding block 281 can slide back and forth in the sliding groove 282. The protruding block 281 enters the triangular through groove 256 when extending. Due to the shape of the protruding block 281, the two pressure plates 254 in the same group are driven to move back and forth and cooperate with the pressure plates 254 in the adjacent side pressure pieces 25 to squeeze the solid waste fragments in the extrusion cavity 26 on both sides. In addition, in the process of gradually squeezing the solid waste fragments from top to bottom to the position of the discharge outlet 27, it will undergo multiple side squeezing, thereby improving the compaction effect and preventing it from loosening. The bidirectional cylinder 222 drives the linkage round rod 223 to move up and down, and the driving block 285 cooperates with the matching block 283 and the tension spring 284, so that the protruding block 281 can slide back and forth in the sliding groove 282. When the protruding block 281 is extended, it enters the triangular through groove 256. Due to the shape of the protruding block 281, it drives the two pressure plates 254 in the same group to move back to each other and cooperate with the pressure plates 254 in the adjacent side pressure pieces 25 to squeeze the solid waste fragments in the extrusion cavity 26 on both sides. In addition, in the process of gradually squeezing the solid waste fragments from top to bottom to the position of the discharge outlet 27, it will undergo multiple side squeezing, thereby improving the compaction effect and preventing it from loosening. When the rod 223 reciprocates up and down, it also drives the second driving block 293 to move up and down. The structure of the second driving block 293 is opposite to that of the first driving block 285. Therefore, when the pressure plate 254 in the telescopic component 28 performs side extrusion, the pushing block 291 is located in the through hole and does not extend out. When the two-way cylinder 222 drives the pressure plate 254 to restore its original position, the second driving block 293 squeezes the pushing block 291, so that the pushing block 291 extends out of the through hole to squeeze the solid waste fragments out of the discharge outlet 27, fall into the annular groove 31 of the receiving seat 3, and are discharged through the discharge port. Through a single drive, all-round extrusion molding of the solid waste fragments, such as tamping down, left and right extrusion, and front and back extrusion, is achieved at the same time, thereby improving the extrusion molding effect and reducing the looseness.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid waste treatment device for environmental protection engineering, comprising a loading platform (1), an extrusion mechanism (2) and a receiving seat (3), characterized in that: The upper end of the material receiving seat (3) is equipped with an extrusion mechanism (2), and the upper end of the extrusion mechanism (2) is equipped with a loading platform (1); The upper end surface of the material receiving seat (3) is provided with an annular groove (31) near the outer wall, and the lower end surface of the annular groove (31) is provided with a material discharge port. The material loading platform (1) is an annular structure with a diameter gradually decreasing from top to bottom. The extrusion mechanism (2) comprises an inner cylinder (21), the inner cylinder (21) being mounted at the center of the upper end surface of the material receiving seat (3), a driving assembly (22) being mounted at the upper end of the inner cylinder (21), a pounding assembly (23) being arranged at the top of the driving assembly (22), an outer cylinder (24) being coaxial with the inner cylinder (21) being mounted on the material receiving seat (3), an annular cavity being formed between the outer cylinder (24) and the inner cylinder (21), a plurality of side pressure members (25) being evenly arranged in the annular cavity along the circumferential direction thereof, A plurality of side pressure members (25) divide the annular cavity into a plurality of extrusion cavities (26); a discharge outlet (27) is provided at a position corresponding to the extrusion cavity (26) on the lower side of the outer wall of the outer cylinder (24); a plurality of telescopic members (28) for cooperating with the side pressure members (25) to extrude the solid waste fragments are arranged at the lower part of the driving assembly (22); the plurality of telescopic members (28) are arranged from top to bottom; and a discharge assembly (29) for pushing out the extruded solid waste fragments is also arranged at the lower part of the driving assembly (22).

2. The solid waste treatment device for environmental protection engineering according to claim 1, characterized in that: The driving assembly (22) comprises a mounting circular plate (221), the mounting circular plate (221) being mounted on the upper end of the inner cylinder (21), a mounting hole being provided in the middle of the mounting circular plate (221), a bidirectional cylinder (222) being fixedly mounted in the mounting hole, a linkage round rod (223) being mounted on the lower telescopic end of the bidirectional cylinder (222), and a ramming assembly (23) being mounted on the upper telescopic end of the bidirectional cylinder (222).

3. The solid waste treatment device for environmental protection engineering according to claim 2, characterized in that: The tamping assembly (23) comprises a disc (231), the lower end surface of the disc (231) is mounted on the upper telescopic end of the bidirectional cylinder (222), the outer wall of the disc (231) is evenly mounted with long strips (232) along its circumferential direction, and a lower tamping rod (233) is vertically mounted at the lower end of the long strip (232) at a position corresponding to the extrusion cavity (26).

4. The solid waste treatment device for environmental protection engineering according to claim 3, characterized in that: The outer wall of the lower tamping rod (233) is provided with a plurality of outriggers (234) from top to bottom, and the outriggers (234) are all arranged obliquely downward.

5. The solid waste treatment device for environmental protection engineering according to claim 2, characterized in that: The side pressure member (25) comprises a fixing plate (251), and the fixing plates (251) are evenly installed along the circumferential direction of the inner wall of the outer cylinder (24) near the upper end surface. The fixing plates (251) are connected to the outer wall of the inner cylinder (21) at the side away from the outer cylinder (24). The fixing plate (251) is a triangular structure. The lower end of the fixing plate (251) and the upper end surface of the material receiving seat (3) are both provided with an arc groove (252) coaxial with the inner cylinder (21). The upper arc groove (252) corresponds to the lower arc groove (252) one by one. Two round blocks (253) are slidably installed in the arc groove (252), and the upper and lower arc grooves (253) are opposite to each other. A pressure plate (254) is installed between the two round blocks (253) of the scale. The pressure plate (254) is arranged between the outer cylinder (24) and the inner cylinder (21). Both ends of the pressure plate (254) close to the outer cylinder (24) and the inner cylinder (21) are arc-shaped to match them. Two pressure plates (254) form a group. A plurality of restoring springs (255) are arranged between the two pressure plates (254) in the same group. The opposite surface of the pressure plate (254) located at the lower side of the restoring spring (255) is provided with a triangular through groove (256) extending from the outside to the inside. Two horizontally opposite triangular through grooves (256) form a group.

6. The solid waste treatment device for environmental protection engineering according to claim 5, characterized in that: The telescopic assembly (28) comprises an overhanging block (281), a sliding groove (282) is provided through the outer wall of the inner cylinder (21) at positions corresponding to a group of triangular through grooves (256), an overhanging block (281) is slidably provided in the sliding groove (282), a matching block (283) is installed at one end of the overhanging block (281) close to the inner cylinder (21), two adjacent matching blocks (283) are connected by a tension spring (284), a driving block (285) is fixedly sleeved and installed at the outer wall of the linkage round rod (223) at positions corresponding to the telescopic assembly (28), the driving block (285) is a truncated cone structure with a diameter gradually decreasing from top to bottom, and the matching block (283) is in an arc shape matching the driving block (285) at one side close to the driving block (285).

7. The solid waste treatment device for environmental protection engineering according to claim 6, characterized in that: The overhanging block (281) is in the shape of a triangular prism whose width gradually increases from the inside of the inner cylinder (21) to the outside of the inner cylinder (21), and balls (286) are evenly arranged on the outer wall of the overhanging block (281) on the side away from the inner cylinder (21).

8. The solid waste treatment device for environmental protection engineering according to claim 2, characterized in that: The material discharge assembly (29) comprises a push block (291), a through hole is provided on the lower side of the outer wall of the outer cylinder (24) in the extrusion cavity (26), and a push block (291) is slidably arranged in the through hole, and the push blocks (291) in the inner cylinder (21) are connected to each other through a telescopic spring (292), and a driving block 2 (293) is fixedly sleeved and installed at a position corresponding to the outer wall of the linkage round rod (223) and the pushing block (291), and the driving block 2 (293) is a truncated cone structure with a diameter gradually increasing from top to bottom, and the push block (291) cooperates with the driving block 2 (293), and the mating end of the push block (291) is in an arc shape.

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