阅读说明：本技术 一种用于城镇污水处理的过滤净水设备 (A filter water purification unit for town sewage treatment ) 是由 陈育猛 于 2021-07-15 设计创作，主要内容包括：本发明公开了一种用于城镇污水处理的过滤净水设备,其结构包括底脚、输送管、过滤箱、净化箱、固定板,底脚上端螺柱连接于净化箱下端,输送管内侧螺栓连接于过滤箱外侧,净化箱外侧固定连接于过滤箱内侧,固定板后端焊接连接于净化箱前端,将设备进行通电,使污水管道与输送管进行连接,随着固定柱与转柱外侧的转轴在转杆上进行上下摆动,使压块内的压角与弹块对纸屑进行挤压推动,纸屑与水压对压角与弹块进行挤压,使弹块抵住卡口下端的抵块,抵块紧贴抵板与接口下端的导板,使导板前端的连接柱,接口抵住卡板前端的支撑架与顶柱进行固定,使压角与弹块将纸块撞除栅格,防止纸块粘附在栅格上,导致栅格被纸块堵塞,造成污水过滤量变小。(The invention discloses a filtering and water purifying device for town sewage treatment, which structurally comprises a footing, a conveying pipe, a filtering box, a purifying box and a fixing plate, wherein the upper end of the footing is connected with the lower end of the purifying box through a stud, the inner side of the conveying pipe is connected with the outer side of the filtering box through a bolt, the outer side of the purifying box is fixedly connected with the inner side of the filtering box, the rear end of the fixing plate is welded and connected with the front end of the purifying box, the device is electrified to connect a sewage pipeline with the conveying pipe, the sewage pipeline and the conveying pipe swing up and down on a rotating rod along with a fixed column and a rotating shaft on the outer side of the rotating column, so that a pressing angle in a pressing block and an elastic block extrude and push paper scraps, the paper scraps and water pressure extrude the pressing angle and the elastic block to enable the elastic block to abut against a resisting block at the lower end of a bayonet, the resisting block is tightly attached to a connecting column at the lower end of the resisting plate and a supporting frame and a top column at the front end of the clamping plate to fix the paper block, and the pressing angle and the elastic block to remove grids, prevent the paper piece from adhering on the grid, lead to the grid to be blockked up by the paper piece, cause the sewage filtration volume to diminish.)

1. A filtering and water purifying device for town sewage treatment structurally comprises a footing (1), a conveying pipe (2), a filter box (3), a purifying box (4) and a fixing plate (5), wherein a stud at the upper end of the footing (1) is connected to the lower end of the purifying box (4), the inner side of the conveying pipe (2) is connected to the outer side of the filter box (3) through a bolt, the outer side of the purifying box (4) is fixedly connected to the inner side of the filter box (3), and the rear end of the fixing plate (5) is welded to the front end of the purifying box (4); the method is characterized in that:

be equipped with extrusion device (31), keep off frame (32), support column (33), bracing piece (34), bull stick (35), collection device (36) in rose box (3), extrusion device (31) inboard activity joint in bull stick (35) outside, keep off frame (32) inboard and bracing piece (34) outside and weld mutually, support column (33) inboard embedded solid is connected in keeping off the frame (32) outside, bracing piece (34) rear end is fixed mutually with collection device (36) front end, the bull stick (35) outside is connected with fender frame (32) inboard.

2. The filtering and water purifying device for town sewage treatment as claimed in claim 1, wherein: the extrusion device (31) is internally provided with a pressing plate (311), a fixing column (312), a rotating shaft (313), a butting groove (314), a rotating column (315) and a fixing block (316), the lower end of the pressing plate (311) is fixed with the upper end of the fixing block (316), the front end of the fixing column (312) is clamped with the rear end of the rotating column (315), the inner side of the rotating shaft (313) is clamped with the outer side of the rotating column (315), and the outer side of the butting groove (314) is welded with the inner side of the fixing block (316).

3. The filtering and water purifying device for town sewage treatment as claimed in claim 2, wherein: be equipped with briquetting (a1), retainer plate (a2), cardboard (a3), connecting groove (a4), support frame (a5), fore-set (a6) in clamp plate (311), briquetting (a1) upper end and fore-set (a6) lower extreme looks block, retainer plate (a2) rear end is fixed with cardboard (a3) front end, the connecting groove (a4) outside is riveted mutually with retainer plate (a2) inboard, the support frame (a5) outside is embedded and is fixed in retainer plate (a2) inboard, fore-set (a6) inboard and support frame (a5) outside clearance fit.

4. The filtering and water purifying device for town sewage treatment as claimed in claim 3, wherein: be equipped with layering (a11), resisting board (a12), interface (a13), baffle (a14), spliced pole (a15), connecting plate (a16) in briquetting (a1), layering (a11) upper end is embedded to be connected in connecting plate (a16) lower extreme, it is fixed mutually with baffle (a15) upper end to resist board (a12) lower extreme, interface (a13) are located and are connected the cooperation in resisting board (a12) upper end, baffle (a14) front end and spliced pole (a15) rear end welding, spliced pole (a15) lower extreme and connecting plate (a16) upper end looks riveting.

5. The filtering and water purifying device for town sewage treatment as claimed in claim 4, wherein: be equipped with bayonet socket (b1), support block (b2), pressure angle (b3), bullet piece (b4), apex angle (b5) in layering (a11), bayonet socket (b1) are located and are carried out fixed coordination in support block (b2) upper end, support block (b2) lower extreme is embedded and is fixed in bullet piece (b4) upper end, pressure angle (b3) upper end riveting is connected in bullet piece (b4) lower extreme, apex angle (b5) upper end fixed connection is in supporting block (b2) lower extreme.

6. The filtering and water purifying device for town sewage treatment as claimed in claim 1, wherein: the collecting device is characterized in that a push plate (361), a collecting groove (362), a stop lever (363), a guide block (364), an arc plate (365) and a connecting frame (366) are arranged in the collecting device (36), the outer side of the push plate (361) is fixedly connected to the inner side of the guide block (364), the outer side of the collecting groove (362) is connected to the inner side of the arc plate (365) in a welding mode, the rear end of the stop lever (363) is attached to the front end of the push plate (361), the outer side of the guide block (364) is riveted to the inner side of the connecting frame (366), and the outer side of the arc plate (365) is in clearance fit.

7. The filtering and water purifying device for town sewage treatment as claimed in claim 6, wherein: the push plate (361) is internally provided with a push block (c1), a supporting ring (c2), a connecting rod (c3), a clamping block (c4), a connecting block (c5) and an arc block (c6), the outer side of the push block (c1) is clamped with the inner side of the connecting rod (c3), the front end of the supporting ring (c2) is connected with the rear end of the clamping block (c4), the outer side of the connecting rod (c3) is fixedly embedded in the inner side of the connecting block (c5), the front end of the clamping block (c4) is attached to the rear end of the push block (c1), the rear end of the connecting block (c5) is welded to the front end of the clamping block (c4), and the arc block (c6) is arranged on the outer side of the connecting rod (c3) for guide fit.

8. The filtering and water purifying device for town sewage treatment as claimed in claim 7, wherein: be equipped with in ejector pad (c1) and push away strip (c11), rand (c12), card strip (c13), support frame (c14), lead mouthful (c15), it connects in card strip (c13) outside to push away inboard the inlaying of strip (c11), rand (c12) front end with support frame (c14) rear end is fixed, card strip (c13) inboard with support frame (c14) outside and be connected, it collects the cooperation to locate in rand (c12) to lead mouthful (c 15).

Technical Field

The invention belongs to the technical field of town sewage treatment and recycling, and particularly relates to a filtering and water purifying device for town sewage treatment.

Background

Papermaking waste water is also a part of town sewage, can produce a large amount of papermaking glueing sewage when making paper, has mixed a large amount of wastepaper and glue in the sewage, need filter the wastepaper and the glue that papermaking produced through grid and the manger of filtering water purification unit.

Based on the above description, the inventor finds that the existing filtering and water purifying device for town sewage treatment mainly has the following defects, such as: in the process that the grids block the paper scraps, part of glue adheres to the paper scraps, so that the paper scraps are in a full state under the covering of sewage and the glue, the paper scraps are adhered to each other, the paper scraps are extruded on the grids in a block shape, the filtering range of the grids is influenced, after the water pressure is increased, the sewage carries burrs at the edges of the paper scraps to fall and cover the blocking grooves to form accumulation, and the filtering flow is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a filtering and water purifying device for town sewage treatment, which aims to solve the problems in the prior art.

The technical scheme adopted by the invention for realizing the technical purpose is as follows: this a filter water purification unit for town sewage treatment, its structure includes footing, conveyer pipe, rose box, purifying box, fixed plate, footing upper end stud connection is in the purifying box lower extreme, the inboard bolted connection of conveyer pipe is in the rose box outside, purifying box outside fixed connection is inboard in the rose box, fixed plate rear end welded connection is in the purifying box front end.

As a further improvement of the invention, an extrusion device, a blocking frame, four support columns, support rods, a rotating rod and a collecting device are arranged in the filter box, the inner side of the extrusion device is movably clamped on the outer side of the rotating rod, the inner side of the blocking frame is welded with the outer side of the support rods, the inner side of each support column is fixedly embedded and connected to the outer side of the blocking frame, the rear end of each support rod is fixed with the front end of the collecting device, the outer side of each rotating rod is connected with the inner side of the blocking frame, and the support columns are clamped on the outer side of the blocking frame.

As a further improvement of the invention, a pressing plate, a fixed column, a rotating shaft, a butting groove, a rotating column and a fixed block are arranged in the extruding device, the lower end of the pressing plate is fixed with the upper end of the fixed block, the front end of the fixed column is clamped with the rear end of the rotating column, the inner side of the rotating shaft is clamped with the outer side of the rotating column, the outer side of the butting groove is welded with the inner side of the fixed block, and a supporting strip is arranged at the front end of the butting groove.

As a further improvement of the invention, a pressing block, a fixed ring, a clamping plate, two connecting grooves, a supporting frame and a top column are arranged in the pressing plate, the upper end of the pressing block is clamped with the lower end of the top column, the rear end of the fixed ring is fixed with the front end of the clamping plate, the outer side of each connecting groove is riveted with the inner side of the fixed ring, the outer side of the supporting frame is embedded and fixed on the inner side of the fixed ring, the inner side of the top column is in clearance fit with the outer side of the supporting frame, and the two connecting grooves are inclined and symmetrically distributed.

As a further improvement of the invention, the pressing block is internally provided with a pressing strip, a supporting plate, a connector, a guide plate, two connecting columns and a connecting plate, the upper end of the pressing strip is fixedly embedded and connected with the lower end of the connecting plate, the lower end of the supporting plate is fixed with the upper end of the guide plate, the connector is arranged at the upper end of the supporting plate for connection and matching, the front end of the guide plate is welded with the rear end of the connecting column, the lower end of the connecting column is riveted with the upper end of the connecting plate, and the two connecting columns are symmetrically distributed.

As a further improvement of the invention, a bayonet, a resisting block, a pressing angle, an elastic block and a vertex angle are arranged in the pressing bar, the bayonet is arranged at the upper end of the resisting block for fixed matching, the lower end of the resisting block is embedded at the upper end of the elastic block, the upper end of the pressing angle is riveted and connected with the lower end of the elastic block, the upper end of the vertex angle is fixedly connected with the lower end of the resisting block, and the pressing angle is made of iron and has certain weight.

As a further improvement of the invention, a push plate, a collecting tank, a stop lever, a guide block, an arc plate and a connecting frame are arranged in the collecting device, the outer side of the push plate is fixedly connected to the inner side of the guide block, the outer side of the collecting tank is welded to the inner side of the arc plate, the rear end of the stop lever is attached to the front end of the push plate, the outer side of the guide block is riveted to the inner side of the connecting frame, the outer sides of the arc plates are in clearance fit, the arc plates are in a semicircular arc shape and are provided with two arc plates which are symmetrically distributed, and a micropore filter screen is arranged on the collecting tank.

As a further improvement of the invention, a push block, a supporting ring, a connecting rod, a fixture block, a connecting block and an arc block are arranged in the push plate, the outer side of the push block is clamped with the inner side of the connecting rod, the front end of the supporting ring is connected with the rear end of the fixture block, the outer side of the connecting rod is embedded and fixed in the inner side of the connecting block, the front end of the fixture block is attached to the rear end of the push block, the rear end of the connecting block is welded at the front end of the fixture block, the arc block is arranged at the outer side of the connecting rod for guiding and matching, and the arc block is made of rubber and has elasticity.

As a further improvement of the invention, the push block is internally provided with two push bars, a clamping ring, a clamping bar, a support frame and guide openings, the inner side of each push bar is fixedly embedded and connected to the outer side of the clamping bar, the front end of the clamping ring is fixed with the rear end of the support frame, the inner side of each clamping bar is connected with the outer side of the support frame, the guide openings are arranged in the clamping ring for collection and matching, and the push bars are made of plastic fibers, have high toughness and high elasticity and are symmetrically distributed.

The invention has the beneficial effects that:

1. the sewage treatment device comprises a filter box, a sewage pipeline, a conveying pipe, a filter plate, a pressing block, a pressing plate, a supporting frame and a connector, wherein the filter box is provided with a baffle frame, the conveying pipe is connected with the sewage pipeline, the sewage carries glue and paper scraps to enter the filter box, the paper scraps are adhered to part of the glue on a filter screen on the inner side of the baffle frame, the sewage impacts an extrusion device, the pressing plate in the extrusion device swings up and down on a rotating rod along with a rotating shaft outside a fixed column and a rotating column under the impact of water pressure, a pressing angle and an elastic block in the pressing block extrude the paper scraps, the paper scraps and the elastic block to enable the pressing angle and the elastic block to abut against a supporting block at the lower end of a bayonet, the supporting block is tightly attached to a guide plate at the lower end of the supporting plate and the connector, the connector abuts against the supporting frame and the top column at the front end of the clamping plate to be fixed, the pressing angle and the elastic block knock off grids, the paper blocks are prevented from being adhered to the grids, and the grids are blocked by the paper blocks, and the sewage filtering capacity is reduced.

2. When the angle thorn of paper piece corner is washed to fall at sewage, sewage carries the angle thorn and strikes on the inboard guide block of carriage and arc board, make sewage carry the angle thorn and enter into in the collecting vat and filter, the angle thorn strikes and pushes away the strip, the messenger pushes away the strip and fixes to the frame that supports in the card strip and the rand outside, the rand supports the connecting block of fixture block and connecting rod both sides, make the connecting block promote the fixture block and support to the circle, the angle thorn drops and collects in the collecting vat and filters, prevent that the angle thorn from falling into in the filter screen, lead to the filter screen to be piled up by the angle thorn and block up, cause the filter screen to reduce sewage filterable effect.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of a filtering and water purifying device for town sewage treatment according to the present invention;

FIG. 2 is a side view of the filter box of the present invention;

FIG. 3 is a front view of the extrusion apparatus of the present invention;

FIG. 4 is a schematic top view of the platen of the present invention;

FIG. 5 is a schematic structural view of a compact according to the present invention;

FIG. 6 is a schematic front view of a molding bar according to the present invention;

FIG. 7 is a front view of the collecting device of the present invention;

FIG. 8 is a side view of the push plate of the present invention;

FIG. 9 is a front view of the push block of the present invention;

in the figure: footing-1, a conveying pipe-2, a filter box-3, a purification box-4, a fixing plate-5, an extrusion device-31, a baffle frame-32, a supporting column-33, a supporting rod-34, a rotating rod-35, a collecting device-36, a pressing plate-311, a fixing column-312, a rotating shaft-313, a resisting groove-314, a rotating column-315, a fixing block-316, a pressing block-a 1, a fixing ring-a 2, a clamping plate-a 3, a connecting groove-a 4, a supporting frame-a 5, a top column-a 6, a pressing strip-a 11, a resisting plate-a 12, an interface-a 13, a guide plate-a 14, a connecting column-a 15, a connecting plate-a 16, a bayonet-b 1, a resisting block-b 2, a pressing angle-b 3, a spring block-b 4, a vertex angle-b 5, a push plate-361, a push plate-32, a push plate-b, The device comprises a collecting groove-362, a stop lever-363, a guide block-364, an arc plate-365, a connecting frame-366, a pushing block-c 1, a stop ring-c 2, a connecting rod-c 3, a clamping block-c 4, a connecting block-c 5, an arc block-c 6, a pushing strip-c 11, a clamping ring-c 12, a clamping strip-c 13, a stop frame-c 14 and a guide opening-c 15.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

As shown in figures 1 to 6:

the invention provides a filtering and water purifying device for town sewage treatment, which structurally comprises a footing 1, a conveying pipe 2, a filter box 3, a purifying box 4 and a fixing plate 5, wherein the upper end of the footing 1 is connected with the lower end of the purifying box 4 through a stud, the inner side of the conveying pipe 2 is connected with the outer side of the filter box 3 through a bolt, the outer side of the purifying box 4 is fixedly connected with the inner side of the filter box 3, and the rear end of the fixing plate 5 is welded and connected with the front end of the purifying box 4.

Wherein, be equipped with extrusion device 31, keep off frame 32, support column 33, bracing piece 34, bull stick 35, collection device 36 in the rose box 3, the inboard activity block of extrusion device 31 is in the bull stick 35 outside, keep off the inboard and 34 outside welding mutually of bracing piece of frame 32, the inboard embedded solid of support column 33 is connected in keeping off the frame 32 outside, 34 rear ends of bracing piece are fixed with collection device 36 front end, the bull stick 35 outside is connected with the fender frame 32 is inboard, support column 33 is equipped with four, and the card is in keeping off the frame 32 outside, makes and keeps stable under the impact of rivers the extrusion device 31 that keeps off the frame 32 inboard.

The extruding device 31 is internally provided with a pressing plate 311, a fixing column 312, a rotating shaft 313, a supporting groove 314, a rotating column 315 and a fixing block 316, the lower end of the pressing plate 311 is fixed with the upper end of the fixing block 316, the front end of the fixing column 312 is clamped with the rear end of the rotating column 315, the inner side of the rotating shaft 313 is clamped with the outer side of the rotating column 315, the outer side of the supporting groove 314 is welded with the inner side of the fixing block 316, and the front end of the supporting groove 314 is provided with a supporting strip, so that the rotating column 315 can be clamped in the supporting strip to rotate.

The pressing plate 311 is internally provided with a pressing block a1, a fixing ring a2, a clamping plate a3, a connecting groove a4, a supporting frame a5 and a top pillar a6, the upper end of the pressing block a1 is clamped with the lower end of the top pillar a6, the rear end of the fixing ring a2 is fixed with the front end of the clamping plate a3, the outer side of the connecting groove a4 is riveted with the inner side of the fixing ring a2, the outer side of the supporting frame a5 is embedded and fixed on the inner side of the fixing ring a2, the inner side of the top pillar a6 is in clearance fit with the outer side of the supporting frame a5, and the connecting grooves a4 are inclined and are symmetrically distributed, so that the pressing plate 311 can be stably fixed on the upper end of the fixing block 316.

The pressing block a1 is internally provided with a pressing strip a11, a butting plate a12, an interface a13, a guide plate a14, a connecting column a15 and a connecting plate a16, the upper end of the pressing strip a11 is fixedly connected to the lower end of the connecting plate a16 in an embedded mode, the lower end of the butting plate a12 is fixed to the upper end of the guide plate a15, the interface a13 is arranged at the upper end of the butting plate a12 to be connected and matched, the front end of the guide plate a14 is welded to the rear end of the connecting column a15, the lower end of the connecting column a15 is riveted to the upper end of the connecting plate a16, and the two connecting columns a15 are symmetrically distributed, so that the pressing strip a11 can push the connecting plate a16 to be fixed when supporting the connecting column a 15.

The pressing strip a11 is internally provided with a bayonet b1, a butting block b2, a pressing angle b3, an elastic block b4 and a vertex angle b5, the bayonet b1 is arranged at the upper end of the butting block b2 to be fixedly matched, the lower end of the butting block b2 is embedded and fixed at the upper end of the elastic block b4, the upper end of the pressing angle b3 is riveted and connected with the lower end of the elastic block b4, the upper end of the vertex angle b5 is fixedly connected with the lower end of the butting block b2, and the pressing angle b3 is made of iron materials and has certain weight, so that paper blocks can be knocked off by the pressing angle b3 to be cleaned.

The specific use mode and function of the embodiment are as follows:

in the invention, the device is electrified, the sewage pipeline is connected with the conveying pipe 2, the sewage carries glue and paper scraps to enter the filter box 3, the paper scraps are adhered to part of the glue on the filter screen on the inner side of the blocking frame 32, the sewage impacts the extrusion device 31, the pressing plate 311 in the extrusion device 31 swings up and down on the rotating rod 35 along with the fixed column 312 and the rotating shaft 313 on the outer side of the rotating column 315 under the impact of water pressure, so that the pressing angle b3 in the pressing block a1 and the elastic block b4 extrude the paper scraps, the pressing angle b3 and the elastic block b4 under the impact of the water pressure, the elastic block b4 is abutted against the abutting block b2 at the lower end of the bayonet b1, the abutting block b2 is abutted against the abutting plate a12 and a14 at the lower end of the interface a13, the guiding plate a14 pushes the supporting frame a15 at the connecting column at the front end of the guiding plate a3 and the guiding plate a13 is abutted against the lattice block 3673742 to prevent the paper scraps from being adhered to the grid 3, resulting in the clogging of the grid by the paper mass and a reduction in the filtration capacity of the contaminated water.

Example 2

As shown in fig. 7 to 9:

the invention provides a filtering and water purifying device for town sewage treatment, wherein a push plate 361, a collecting tank 362, a stop lever 363, a guide block 364, an arc plate 365 and a connecting frame 366 are arranged in a collecting device 36, the outer side of the push plate 361 is fixedly connected to the inner side of the guide block 364, the outer side of the collecting tank 362 is welded to the inner side of the arc plate 365, the rear end of the stop lever 363 is attached to the front end of the push plate 361, the outer side of the guide block 364 is riveted to the inner side of the connecting frame 366, the outer side of the arc plate 365 is in clearance fit, the arc plate 365 is in a semicircular arc shape and is provided with two parts which are symmetrically distributed, and microporous filter screens are arranged on the collecting tank 362, so that corner thorns falling off paper scraps can be collected along with the radian of the arc plate 365.

The push plate 361 is internally provided with a push block c1, a butting ring c2, a connecting rod c3, a fixture block c4, a connecting block c5 and an arc block c6, the outer side of the push block c1 is clamped with the inner side of the connecting rod c3, the front end of the butting ring c2 is connected with the rear end of the fixture block c4, the outer side of the connecting rod c3 is fixedly embedded in the inner side of the connecting block c5, the front end of the fixture block c4 is attached to the rear end of the push block c1, the rear end of the connecting block c5 is welded to the front end of the fixture block c4, the arc block c6 is arranged on the outer side of the connecting rod c3 for guiding and matching, and the arc block c6 is made of rubber and has elasticity, so that corner pricks of paper scraps cannot be adhered to the arc block c 6.

The push block c1 is internally provided with a push strip c11, a clamping ring c12, a clamping strip c13, a support c14 and a guide opening c15, the push strip c11 is embedded and fixedly connected to the outer side of the clamping strip c13, the front end of the clamping ring c12 is fixed to the rear end of the support c14, the inner side of the clamping strip c13 is connected to the outer side of the support c14, the guide opening c15 is arranged in the clamping ring c12 for collection and matching, the push strip c11 is made of plastic fibers, has high toughness and high elasticity, is provided with two parts and is symmetrically distributed, and after the angle prick and the sewage push strip c11 are extruded and contracted, the push strip c11 rebounds to shake the angle prick into the collecting groove 362.

The specific use mode and function of the embodiment are as follows:

in the invention, when the angle prick of the paper block corner is washed off by sewage, the sewage carries the angle prick to impact on the guide block 364 and the arc plate 365 on the inner side of the connecting frame 366, so that the sewage carries the angle prick to enter the collecting groove 362 for filtering, the angle prick impacts the push strip c11, the push strip c11 is fixed to the clamp strip c13 and the support frame c14 on the outer side of the clamping ring c12, the clamping ring c12 supports against the clamping block c4 and the connecting block c5 on two sides of the connecting rod c3, the connecting block c5 pushes the clamping block c4 to support against the support ring c2, the angle prick falls in the collecting groove 362 for collecting and filtering, and the angle prick is prevented from falling into a filter screen to cause the filter screen to be stacked and blocked by the angle prick, so that the effect of the filter screen on sewage is reduced.

The invention solves the problems of the prior art, and through the mutual combination of the components, the invention prevents the paper blocks from being adhered to the grids, so that the grids are blocked by the paper blocks, the sewage filtering capacity is reduced, and the angle pricks are prevented from falling into the filter screen, so that the filter screen is piled up and blocked by the angle pricks, and the sewage filtering effect of the filter screen is reduced.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.