A multi-stage filtering device for wastewater in industrial production of edible fungi

Abstract

The present application relates to wastewater treatment technical field, specifically to a kind of edible fungus industrial production wastewater multistage filtration treatment device, including rack, and the primary filtration mechanism and sedimentation filtration mechanism being located at the top of rack, wastewater is filtered after sequentially passing through primary filtration mechanism and sedimentation filtration mechanism and is discharged;Primary filtration mechanism includes filter cartridge and the filter assembly rotationally arranged in its interior, filter assembly is separated into multiple independent filtration areas along the wall of filter cartridge periphery, and filter assembly can be rotated relative to filter cartridge, so that each filtration area is alternately rotated to the upper feeding pipe directly below to realize continuous filtration;Filter cartridge is also provided with cleaning assembly.By setting the rotary filter assembly consisting of rotating plate and annular filter frame, and separating filter frame into multiple independent filtration areas, each area is alternately rotated to the upper feeding pipe below to receive wastewater, realizes non-stop feeding and filtration, effectively improves wastewater treatment efficiency, and meets the needs of industrial continuous production.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a multi-stage filtration treatment device for wastewater from the industrial production of edible fungi. Background Technology

[0002] In the industrialized production of edible fungi, a large amount of wastewater is generated during processes such as culture medium preparation, spraying for humidification, and equipment cleaning. This type of wastewater typically contains high concentrations of suspended solids (such as sawdust, corn cobs, straw fragments, and mycelial residues), dissolved organic matter, and small amounts of nutrients. If discharged directly without effective treatment, it will not only increase the load on wastewater treatment systems but may also pose a pollution risk to the environment.

[0003] Currently, traditional methods for treating wastewater from edible fungi production often employ filtration devices using screens or cloths. However, during the filtration process, the surface of the screens or cloths is easily clogged by suspended solids, requiring frequent shutdowns for cleaning. This makes it difficult to meet the stability and efficiency requirements of continuous industrial production for wastewater treatment systems. Furthermore, single-stage filtration devices using only screens or cloths are insufficient to remove dissolved organic matter and small amounts of nutrients, resulting in incomplete filtration.

[0004] Therefore, there is an urgent need to design a wastewater treatment device with automatic cleaning function and graded filtration to effectively improve the treatment efficiency and effluent quality of wastewater from industrialized edible fungi production. Summary of the Invention

[0005] The technical solution is as follows: A multi-stage filtration treatment device for wastewater from industrialized edible fungi production includes a frame, and a primary filtration mechanism and a sedimentation filtration mechanism located on the top of the frame. Wastewater is discharged after being filtered sequentially through the primary filtration mechanism and the sedimentation filtration mechanism. The primary filtration mechanism includes a filter cylinder and a filter assembly rotatably disposed inside it. The filter assembly is used to separate solids and liquids in the wastewater entering the filter cylinder. The top of the filter cylinder is provided with a feed pipe communicating with its inner cavity, and the lower side wall is provided with a filter residue discharge pipe. The filter assembly is divided into multiple independent filtration zones along the circumferential direction of the inner wall of the filter cylinder, and the filter assembly can rotate relative to the filter cylinder, so that each filtration zone alternately rotates to the position directly below the feed pipe to achieve continuous filtration. The filter cylinder is also provided with a cleaning component, which rotates with the filter assembly when it rotates and cleans the solids retained in the filtration zone of the filter assembly and pushes them toward the filter residue discharge pipe.

[0006] Furthermore, the filter assembly includes a rotating plate that is rotatably and sealed at the opening of the filter cylinder, and an annular filter frame fixed inside the rotating plate. The annular filter frame is provided with partition plates at intervals on its outer circumference, and the partition plates, the annular filter frame, the filter cylinder, and the rotating plate form multiple independent filter areas.

[0007] Furthermore, the number of cleaning components is the same as the number of filtration areas. Each cleaning component includes a cleaning block that slides on the outer wall of the annular filter frame and a U-shaped push rod connected to the cleaning block. A V-shaped guide groove is opened on the outer circumference of the filter cylinder, and a guide rod is provided on the U-shaped push rod. The guide rod slides in cooperation with the V-shaped guide groove to drive the cleaning block to move and clean along the outer wall of the annular filter frame.

[0008] Furthermore, a U-shaped inclined guide frame is installed inside the filter cylinder. The U-shaped inclined guide frame is located inside the annular filter frame. A U-shaped transition plate is installed between the outer wall of the filter cylinder and the sedimentation filtration mechanism. The U-shaped inclined guide frame is connected to the U-shaped transition plate. After the waste liquid entering the filter cylinder is filtered by the annular filter frame, it falls downward onto the U-shaped inclined guide frame, is discharged out of the filter cylinder through the U-shaped inclined guide frame, and is guided by the U-shaped transition plate to the sedimentation filtration mechanism for secondary filtration.

[0009] Furthermore, a motor is installed on the frame, and the output shaft of the motor is connected to a drive wheel. The drive wheel meshes with a driven wheel installed on the back of the rotating plate. The motor drives the rotating plate to rotate through the cooperation of the drive wheel and the driven wheel, thereby realizing the rotation of the filter assembly inside the filter cylinder. This allows different filtration areas to rotate to the bottom of the feed pipe. At the same time, the guide rod moves along the trajectory of the V-shaped guide groove, causing the U-shaped push rod to push the cleaning block along the outer wall of the annular filter frame, thereby pushing the filter residue retained on the annular filter frame into the filter residue discharge pipe, realizing the self-cleaning of the annular filter frame.

[0010] Furthermore, an air blowing pipe is installed inside the filter cylinder, which is located inside the annular filter frame. Multiple air nozzles are spaced apart on the air blowing pipe, which blows air towards the annular filter frame. An air inlet valve is installed at the end of the air blowing pipe that extends outward from the filter cylinder.

[0011] Furthermore, an arc-shaped baffle is also provided inside the filter cartridge. The arc-shaped baffle is located inside the annular filter frame, and one end of the arc-shaped baffle contacts and fits with the inner wall of the annular filter frame. The arc-shaped baffle is used to provide shielding for the air blowing pipe.

[0012] Furthermore, the sedimentation filtration mechanism includes a sedimentation tank mounted on a frame and an inclined plate frame mounted inside the sedimentation tank. The sedimentation tank has an inlet chamber and an outlet chamber at both ends on its inner side, and a purified water outlet pipe is mounted on the outer side of the sedimentation tank. The purified water outlet pipe is connected to the outlet chamber.

[0013] Furthermore, a serrated plate is installed between the sedimentation tank and the drainage chamber. The serrated plate is used to block small suspended matter on the liquid surface at the inlet of the drainage chamber to ensure the quality of the discharged water.

[0014] Further, two outer walls in the length direction of the sedimentation tank are respectively provided with fixing frames, and a U-shaped rack pushing frame is slidably disposed on the two fixing frames together. An air cylinder is fixedly mounted on the outer wall of the sedimentation tank away from the primary filtering mechanism, and the free end of the piston rod of the air cylinder is fixedly connected with the U-shaped rack pushing frame. A "mouth"-shaped positioning frame is arranged on the inner wall of the sedimentation tank, and closing plates are uniformly and rotatably disposed on the positioning frame at intervals along its axial direction. The hinge shafts of the closing plates rotatably penetrating the positioning frame also rotatably penetrate the sedimentation tank, and gears are arranged at both ends located outside the sedimentation tank, with the gears meshed with the racks of the U-shaped rack pushing frame. Positioning rods are arranged at both ends of the closing plates away from the positioning frame, positioning grooves are uniformly formed at intervals at the bottom of the positioning frame, and the positioning rods can be slidably clamped into the positioning grooves.

[0015] The beneficial effects are as follows: 1. By arranging a rotary filter assembly composed of a rotating plate and an annular filter frame, and dividing the filter frame into a plurality of independent filter areas, each area is sequentially and alternately rotated to the position below the feeding pipe to receive wastewater, so as to realize uninterrupted feeding and filtration, effectively improve the wastewater treatment efficiency, and meet the requirements of factory continuous production.

[0016] 2. The cleaning assembly rotates synchronously with the filter assembly, and cooperates with the V-shaped guide groove to drive the U-shaped push rod to push the cleaning block to move along the outer wall of the annular filter frame, so as to push the intercepted filter residue to the filter residue discharge pipe in real time, realizing mechanical scraping and cleaning of the filter screen surface.

[0017] 3. An inclined plate frame is arranged in the sedimentation tank, and by using the shallow sedimentation principle, large residual suspended particles in the wastewater can be fully settled during the rising process; at the same time, a serrated plate is arranged between the sedimentation tank and the drainage cavity, which can effectively intercept fine suspended matter on the liquid surface, ensure the quality of the purified water flowing into the drainage cavity, and meet the discharge or reuse standards.

[0018] 4. The U-shaped rack pushing frame is driven by the air cylinder to move horizontally, and the closing plates are rotated and closed by utilizing the meshing of the gears and the racks in the U-shaped rack pushing frame, so that the sedimentation tank is effectively divided into an upper chamber and a lower chamber. Therefore, when the inclined plate frame is taken out, the liquid containing sediment in the lower chamber of the sedimentation tank is completely isolated, and the movement of the inclined plate frame only disturbs the liquid in the upper chamber, which effectively prevents the sediment at the bottom of the sedimentation tank from floating up to the clean water area due to liquid disturbance, thereby ensuring the water quality stability of the clean water area in the upper part of the sedimentation tank. Brief Description of the Drawings

[0019] Figure 1 is a schematic perspective view of the present invention.

[0020] Figure 2 is a schematic perspective view of the first part of the present invention.

[0021] Figure 3 is a schematic perspective view of the primary filtering mechanism, the U-shaped transition plate, the U-shaped push rod, the guide rod and the air inlet valve of the present invention.

[0022] Figure 4 For the present invention Figure 3 A three-dimensional sectional view of the filter cartridge.

[0023] Figure 5 This is a three-dimensional structural diagram of the internal components of the filter cartridge of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the filter assembly, arc-shaped baffle, and air blowing pipe of the present invention.

[0025] Figure 7 For the present invention Figure 4 A schematic diagram of the three-dimensional structure from a second perspective.

[0026] Figure 8 This is a three-dimensional structural diagram of the second part of the present invention.

[0027] Figure 9 For the present invention Figure 8 A three-dimensional sectional view.

[0028] Figure 10 This is a three-dimensional structural diagram of the components of the present invention, including the fixing frame, cylinder, U-shaped rack pusher, positioning frame, closing plate, and gears.

[0029] Figure 11 For the present invention Figure 10 A partial three-dimensional structural diagram.

[0030] In the attached diagram, the following labels are used: 1-frame, 2-primary filtration mechanism, 20-filter cylinder, 21-feeding pipe, 22-V-shaped guide groove, 23-filter residue discharge pipe, 3-sedimentation filtration mechanism, 30-sedimentation tank, 31-sloping plate frame, 32-water inlet chamber, 33-drainage chamber, 4-filtration assembly, 40-rotating plate, 41-annular filter frame, 42-partition plate, 43-arc baffle, 5-U-shaped inclined guide frame, 51-U-shaped transition plate, 6-cleaning block, 61-U-shaped push rod, 62-guide rod, 7-air inlet valve, 71-air blowing pipe, 8-motor, 91-drive wheel, 92-driven wheel, 10-serrated plate, 11-purified water discharge pipe, 12-fixed frame, 13-U-shaped rack and pinion push frame, 14-cylinder, 15-positioning frame, 16-closing plate, 17-gear, 18-positioning rod, 19-positioning groove. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0032] Example: A multi-stage filtration and treatment device for wastewater from industrialized edible fungi production, such as... Figure 1As shown, it includes a frame 1, a primary filtration mechanism 2 and a sedimentation filtration mechanism 3. The primary filtration mechanism 2 and the sedimentation filtration mechanism 3 are spaced apart on the top of the frame 1. Wastewater is discharged after being filtered through the primary filtration mechanism 2 and the sedimentation filtration mechanism 3 in sequence.

[0033] like Figures 2-6 As shown, the primary filtration mechanism 2 includes a filter cylinder 20 and a filter assembly 4 rotatably disposed inside it. The filter assembly 4 is used to filter the wastewater entering the filter cylinder 20 to achieve solid-liquid separation. The filter cylinder 20 has a circular tube structure with one end closed and the other end open. The top of the filter cylinder 20 is connected to a feed pipe 21 that communicates with its inner cavity, used to introduce the production wastewater to be treated into the filter cylinder 20. The lower part of the closed end of the filter cylinder 20 is connected to a filter residue discharge pipe 23, used to discharge the filtered solid waste residue out of the filter cylinder 20. The filter assembly 4 includes a rotating plate 40 that is sealed and rotatably disposed at the opening of the filter cylinder 20. An annular filter frame 41 is fixedly disposed on the side of the rotating plate 40 facing the inner cavity of the filter cylinder 20. The wastewater entering the filter cylinder 20 passes downward through the annular filter frame 41 for filtration. The annular filter frame 41 is evenly provided with partition plates 42 around its circumferential outer wall. The partition plates 42, the annular filter frame 41, the filter cylinder 20, and the rotating plate 40 form multiple independent filtration areas.

[0034] like Figure 1 and Figure 7 As shown, a motor 8 is mounted on the frame 1. The output shaft of the motor 8 is connected to a drive wheel 91. The drive wheel 91 meshes with a driven wheel 92 mounted on the back of the rotating plate 40. The motor 8 drives the rotating plate 40 to rotate through the cooperation of the drive wheel 91 and the driven wheel 92, thereby realizing the rotation of the filter assembly 4 inside the filter cylinder 20. This causes different filtration areas to rotate to the bottom of the feed pipe 21. Thus, each filtration area in the filter assembly 4 rotates alternately to the bottom of the feed pipe 21 to receive and filter the wastewater entering the filter cylinder 20, thereby realizing continuous filtration operation.

[0035] like Figures 2-6As shown, the filter cylinder 20 is also equipped with a cleaning component for real-time cleaning of the filter assembly 4 to ensure the filtration effect of the filter assembly 4; when the filter assembly 4 rotates, the cleaning component rotates with the filter assembly 4 and cleans the solids retained on the annular filter frame 41 and pushes them into the filter residue discharge pipe 23. Specifically, multiple cleaning components are provided, the number of which is consistent with the number of multiple independent filtration areas. The cleaning component includes a cleaning block 6 slidably disposed on the outer wall of the annular filter frame 41 and a U-shaped push rod 61 connected to the cleaning block 6. The cleaning block 6 has a fan-shaped structure, and the U-shaped push rod 61 is used to push the cleaning block 6 along the outer wall of the annular filter frame 41 to clean the annular filter frame 41. The U-shaped push rod 61 slides through the rotating plate 40, and the filter cylinder 20 has a V-shaped guide groove 22 around its circumferential outer wall. The V-shaped guide groove 22 includes a V-shaped part and an arc-shaped part connecting the two ends of the V-shaped opening (such as...). Figure 2 (As shown); a guide rod 62 is connected to the U-shaped push rod 61, and the guide rod 62 slides in conjunction with the V-shaped guide groove 22; when the filter assembly 4 rotates, the guide rod 62 moves along the trajectory of the V-shaped guide groove 22. When the guide rod 62 moves from the feed pipe 21 to the filter residue discharge pipe 23 along the trajectory of the V-shaped guide groove 22 (that is, a filter area in the filter assembly switches from the filter state below the feed pipe 21 to the residue discharge state), at this time, the guide rod 62 moves along the direction of the rotating plate 40 of the V-shaped guide groove 22 towards the sedimentation filter mechanism 3. The guide rod 62 pushes the cleaning block 6 along the outer wall of the annular filter frame 41 in the direction of the rotating plate 40 towards the sedimentation filter mechanism 3 through the U-shaped push rod 61, thereby pushing the solid filter residue on the annular filter frame 41 into the filter residue discharge pipe 23, thus cleaning the annular filter frame 41.

[0036] like Figure 5 and Figure 6 As shown, in order to further improve the cleaning effect of the annular filter frame 41, an air blowing pipe 71 is provided inside the filter cylinder 20. The air blowing pipe 71 is located inside the annular filter frame 41 and is located in the area between the feed pipe 21 and the filter residue discharge pipe 23. Multiple air nozzles are provided on the air blowing pipe 71 at intervals. The air nozzles blow air towards the annular filter frame 41. An air inlet valve 7 is provided at the end of the air blowing pipe 71 that extends out of the filter cylinder 20. The air intake volume is controlled by the air inlet valve 7 to adjust the blowing pressure of the air nozzles on the air blowing pipe 71 as needed.

[0037] like Figure 6 As shown, to prevent the filtrate filtered by the annular filter frame 41 from falling onto the nozzle of the air blowing pipe 71, an arc-shaped baffle 43 is also provided inside the filter cylinder 20. The arc-shaped baffle 43 is located inside the annular filter frame 41, and one end of the arc-shaped baffle 43 contacts and cooperates with the inner wall of the annular filter frame 41. The arc-shaped baffle 43 covers the side of the air blowing pipe 71 facing the feed pipe 21, and the arc-shaped baffle 43 does not affect the air nozzle's blowing on the inner wall of the annular filter frame 41.

[0038] like Figures 4-5 As shown, a U-shaped inclined guide frame 5 is provided inside the filter cylinder 20. The U-shaped inclined guide frame 5 is located inside the annular filter frame 41 and directly below the feed pipe 21. The U-shaped inclined guide frame 5 is inclined downward from one side of the rotating plate 40 towards the sedimentation filter mechanism 3. The U-shaped inclined guide frame 5 is used to receive the liquid filtered by the annular filter frame 41 and guide the liquid towards the sedimentation filter mechanism 3. A U-shaped transition plate 51 is provided between the outer wall of the filter cylinder 20 and the sedimentation filter mechanism 3. The lower end of the U-shaped inclined guide frame 5 is connected to the U-shaped transition plate 51. The waste liquid entering the filter cylinder 20 is filtered by the annular filter frame 41 and falls downward onto the U-shaped inclined guide frame 5. It is then discharged from the filter cylinder 20 through the U-shaped inclined guide frame 5 and guided to the sedimentation filter mechanism 3 for secondary filtration through the U-shaped transition plate 51.

[0039] like Figures 8-9 As shown, the sedimentation filtration mechanism 3 includes a sedimentation tank 30 mounted on a frame 1 and an inclined plate frame 31 disposed within the sedimentation tank 30. Multiple inclined plates (using a conventional inclined plate sedimentation structure) are arranged in an array within the inclined plate frame 31. An inlet chamber 32 and a drain chamber 33 are respectively located at both ends of the inner side of the sedimentation tank 30. The bottom end of the inlet chamber 32 communicates with the bottom of the main body of the sedimentation tank 30. The drain chamber 33 is located above the inclined plate frame 31. A purified water discharge pipe 11 is disposed on the outer side of the sedimentation tank 30, and the purified water discharge pipe 11 communicates with the drain chamber 33. After being filtered by the primary filtration mechanism 2, the wastewater is introduced into the inlet chamber 32 through the U-shaped transition plate 51 and flows downward into the main body of the sedimentation tank 30. It then slowly rises and passes through the inclined plate frame 31. When the wastewater passes through the inclined plate frame 31, the larger suspended particles remaining in the wastewater sink to the bottom of the sedimentation tank 30 or adhere to the inclined plate of the inclined plate frame 31 under its own gravity and the blocking effect of the inclined plate frame 31. This process purifies the wastewater a second time. The purified wastewater flows upward into the drain chamber 33 and finally flows out through the purified water discharge pipe 11.

[0040] like Figures 8-9 As shown, a serrated plate 10 is provided between the sedimentation tank 30 and the drainage chamber 33. The serrated plate 10 has an L-shaped structure. Its horizontal part is fixedly connected to the inner wall of the sedimentation tank 30, and the top surface of its vertical part has a serrated structure. The serrated plate 10 and the inner wall of the sedimentation tank 30 form the drainage chamber 33. The serrated plate 10 is used to block the fine suspended matter on the surface of the purified liquid flowing into the drainage chamber 33, so as to prevent the fine suspended matter from entering the drainage chamber 33 and thus ensure the water quality flowing into the drainage chamber 33.

[0041] During operation, the production wastewater is first introduced into the filter cylinder 20 through the feed pipe 21, and then enters the primary filtration mechanism 2 for solid-liquid separation. The motor 8 starts, and through the meshing of the drive wheel 91 and driven wheel 92, drives the rotating plate 40 and the annular filter frame 41 to rotate continuously within the filter cylinder 20. The annular filter frame 41 is divided into multiple independent filtration zones by the partition plate 42. Each filtration zone rotates alternately to a position directly below the feed pipe 21, receiving the wastewater entering the filter cylinder 20 in turn, thus achieving continuous filtration.

[0042] When a certain filtration zone rotates to below the feed pipe 21, wastewater is injected into the zone, solid waste is trapped on the outer wall of the annular filter frame 41, and the filtrate drips down through the annular filter frame 41 onto the U-shaped inclined guide frame 5, and is guided by it into the U-shaped transition plate 51, and then transported to the inlet chamber 32 of the sedimentation filtration mechanism 3 to complete the initial solid-liquid separation.

[0043] As the filter assembly 4 continues to rotate, the cleaning assembly works simultaneously. The guide rod 62 slides along the V-shaped guide groove 22 on the outer wall of the filter cylinder 20. When the filtration area rotates clockwise away from below the feed pipe 21, the guide rod 62 moves along the guide groove towards the sedimentation filter mechanism 3, and pushes the cleaning block 6 along the outer wall of the annular filter frame 41 towards the filter cake discharge pipe 23 via the U-shaped push rod 61, pushing the solid filter cake adhering to the surface of the filter frame towards the discharge pipe, thus achieving real-time cleaning of the filter cake. As the filter assembly 4 continues to rotate, the guide rod 62 slides in the opposite direction along the V-shaped guide groove 22, and the cleaning block 6 resets. After resetting, the filtration area can re-receive wastewater and enter the next filtration cycle.

[0044] Meanwhile, the air blowing pipe 71 located inside the annular filter frame 41 blows air into the inner wall of the filter frame through the air nozzle to perform reverse blowing of the filter frame, remove the fine particles that are blocked in the micropores of the filter screen, and further enhance the self-cleaning ability of the filter assembly 4.

[0045] The filtrate, after primary filtration, enters the inlet chamber 32 of the settling tank 30 through the U-shaped transition plate 51. It first flows downwards to the bottom of the tank, then slowly rises past the inclined plate frame 31. During this process, larger suspended particles remaining in the wastewater naturally settle to the bottom under gravity, achieving secondary purification. The rising clarified liquid flows over the serrated plate 10 and into the drain chamber 33. The serrated plate 10 effectively intercepts fine suspended matter on the liquid surface, ensuring that the water entering the drain chamber 33 meets the standards. Finally, the purified water is discharged or reused through the purified water discharge pipe 11.

[0046] like Figures 8 to 11As shown, to facilitate taking the inclined plate frame 31 out of the sedimentation tank 30 for cleaning or replacement, and prevent the bottom sediment from floating up to the upper clear water zone due to disturbance of the liquid in the sedimentation tank 30 during this operation, the present apparatus is provided with fixing frames 12 on the two outer side walls in the length direction of the sedimentation tank 30 respectively, and a U-shaped rack pushing frame 13 is slidably mounted on the two fixing frames 12 together. A cylinder 14 is fixedly mounted on the outer wall of the side of the sedimentation tank 30 away from the primary filtering mechanism 2, and the end of the piston rod of the cylinder 14 is fixedly connected with the U-shaped rack pushing frame 13, for driving the U-shaped rack pushing frame 13 to slide along the fixing frames 12.

[0047] A square-shaped positioning frame 15 is fixedly arranged on the inner wall of the sedimentation tank 30, and the positioning frame 15 is located below the inclined plate frame 31. A plurality of closing plates 16 are rotatably mounted on the positioning frame 16 at uniform intervals along its axial direction, the spacing between two adjacent closing plates 16 matches the width of the closing plates 16, and a sealing ring is arranged on the outer periphery of the closing plate 16, which can effectively fill the gaps between adjacent closing plates 16 and between the closing plates 16 and the positioning frame 15 after the closing plates 16 are rotated into position, so as to improve the sealing performance. The hinge shaft of each closing plate 16 penetrates through the positioning frame 15 and rotatably extends out of the side wall of the sedimentation tank 30, and both ends of the hinge shaft located outside the sedimentation tank 30 are fixedly sleeved with gears 17, which are meshed with the racks on the U-shaped rack pushing frame 13. A positioning rod 18 is further arranged at the end of the closing plate 16 away from the positioning frame 15, and a positioning groove 19 is correspondingly opened at the bottom of the positioning frame 15.

[0048] When the piston rod of the cylinder 14 extends out, it pushes the U-shaped rack pushing frame 13 to slide along the fixing frames 12 in the direction away from the primary filtering mechanism 2. The U-shaped rack pushing frame 13 drives the gears 17 to rotate clockwise through the racks, so as to drive all the closing plates 16 to synchronously rotate clockwise and gradually close until the positioning rods 18 are clamped into the corresponding positioning grooves 19 and stop. At this time, the closing plates 16 completely divide the sedimentation tank 30 into an upper chamber and a lower chamber, and the inclined plate frame 31 is located in the upper chamber.

[0049] When the inclined plate frame 31 is taken out from the sedimentation tank 30 in this state, the sediment-containing liquid in the lower chamber is effectively isolated by the closing plates 16, and will not be disturbed by the movement of the inclined plate frame 31, thereby effectively preventing the bottom sediment from floating up to the clear water zone, ensuring that the water quality of the upper clear water zone of the sedimentation tank 30 is not affected, and guaranteeing stable effluent water quality. At the same time, the taking-out and maintenance of the inclined plate frame 31 can be completed in a non-stop state without draining the water in the sedimentation tank 30, which saves water resources and avoids the time loss caused by draining and refilling water.

[0050] Although the present invention has been described with reference to the exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.

Claims

1. A multi-stage filtration treatment device for wastewater from industrialized production of edible fungi, comprising a frame (1), and a primary filtration mechanism (2) and a sedimentation filtration mechanism (3) disposed on the top of the frame (1), wherein wastewater is discharged after being filtered sequentially through the primary filtration mechanism (2) and the sedimentation filtration mechanism (3); characterized in that, The primary filtration mechanism (2) includes a filter cylinder (20) and a filter assembly (4) rotatably disposed inside it. The filter assembly (4) is used to separate solids and liquids in the wastewater entering the filter cylinder (20). The top of the filter cylinder (20) is provided with a feed pipe (21) communicating with its inner cavity, and the lower side wall is provided with a filter residue discharge pipe (23). The filter assembly (4) is divided into multiple independent filtration areas along the inner wall of the filter cylinder (20), and the filter assembly (4) can rotate relative to the filter cylinder (20), so that each filtration area alternately rotates to the feed pipe (21) to achieve continuous filtration. The filter cylinder (20) is also provided with a cleaning assembly, which rotates with the filter assembly (4) when it rotates and cleans the solids retained in the filtration area of ​​the filter assembly (4) and pushes them to the filter residue discharge pipe (23).

2. The multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 1, characterized in that, The filter assembly (4) includes a rotating plate (40) that is rotatably sealed at the opening of the filter cylinder (20), and an annular filter frame (41) fixed inside the rotating plate (40). The annular filter frame (41) is provided with partition plates (42) spaced apart on its outer periphery. The partition plates (42), the annular filter frame (41), the filter cylinder (20), and the rotating plate (40) form multiple independent filter areas.

3. The multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 2, characterized in that, The number of cleaning components is the same as the number of filtration areas. Each cleaning component includes a cleaning block (6) that is slidably disposed on the outer wall of the annular filter frame (41) and a U-shaped push rod (61) connected to the cleaning block (6). A V-shaped guide groove (22) is provided on the outer circumference of the filter cylinder (20). A guide rod (62) is provided on the U-shaped push rod (61). The guide rod (62) slides in cooperation with the V-shaped guide groove (22) to drive the cleaning block (6) to move and clean along the outer wall of the annular filter frame (41).

4. The multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 2, characterized in that, A U-shaped inclined guide frame (5) is provided inside the filter cylinder (20). The U-shaped inclined guide frame (5) is located inside the annular filter frame (41). A U-shaped transition plate (51) is provided between the outer wall of the filter cylinder (20) and the sedimentation filtration mechanism (3). The U-shaped inclined guide frame (5) is connected to the U-shaped transition plate (51). The waste liquid entering the filter cylinder (20) is filtered by the annular filter frame (41) and falls downward onto the U-shaped inclined guide frame (5). It is then discharged from the filter cylinder (20) through the U-shaped inclined guide frame (5) and guided to the sedimentation filtration mechanism (3) for secondary filtration through the U-shaped transition plate (51).

5. A multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 2, characterized in that, A motor (8) is mounted on the frame (1). The output shaft of the motor (8) is connected to a drive wheel (91). The drive wheel (91) meshes with a driven wheel (92) mounted on the back of the rotating plate (40).

6. The multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 2, characterized in that, An air blowing pipe (71) is provided inside the filter cylinder (20). The air blowing pipe (71) is located inside the annular filter frame (41). Multiple air nozzles are provided on the air blowing pipe (71) at intervals. The air nozzles blow air toward the annular filter frame (41). An air inlet valve (7) is provided at one end of the air blowing pipe (71) that extends out of the filter cylinder (20).

7. A multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 6, characterized in that, An arc-shaped baffle (43) is further arranged in the filter cartridge (20), the arc-shaped baffle (43) is disposed in the annular filter frame (41), one end of the arc-shaped baffle (43) is in contact fit with the inner wall of the annular filter frame (41), and the arc-shaped baffle (43) is used for providing shielding for the gas blowing pipe (71).

8. A multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 1, characterized in that, The sedimentation and filtration mechanism (3) comprises a sedimentation tank (30) arranged on the frame (1) and an inclined plate frame (31) arranged in the sedimentation tank (30), the two inner ends of the sedimentation tank (30) are respectively provided with a water inlet chamber (32) and a water discharge chamber (33), the outer side of the sedimentation tank (30) is provided with a purified water discharge pipe (11), and the purified water discharge pipe (11) is communicated with the water discharge chamber (33).

9. A multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 8, characterized in that, A serrated plate (10) is arranged between the sedimentation tank (30) and the water discharge chamber (33), and the serrated plate (10) is used for blocking fine suspended matters on the liquid surface at the inlet of the water discharge chamber (33).

10. A multi-stage filtration treatment device for wastewater from industrialized edible fungi production according to claim 8, characterized in that, Two outer walls in the length direction of the sedimentation tank (30) are respectively provided with a fixing frame (12), a U-shaped rack pushing frame (13) is slidably arranged on the two fixing frames (12) together, an air cylinder (14) is fixedly mounted on the outer wall of the sedimentation tank (30) far away from the primary filtering mechanism (2), the free end of the piston rod of the air cylinder (14) is fixedly connected with the U-shaped rack pushing frame (13), a "mouth"-shaped positioning frame (15) is arranged on the inner wall of the sedimentation tank (30), closing plates (16) are uniformly and rotatably arranged on the positioning frame (15) at intervals along the axial direction thereof, the hinge shafts of the closing plates (16) rotatably penetrating through the positioning frame (15) rotatably penetrate through the sedimentation tank (30), gears (17) are arranged at both ends located outside the sedimentation tank (30), the gears (17) are meshed with the racks on the U-shaped rack pushing frame (13), positioning rods (18) are arranged at both ends of the closing plates (16) far away from the positioning frame (15), positioning grooves (19) are uniformly formed at intervals at the bottom of the positioning frame (15), and the positioning rods (18) can be slidably clamped into the positioning grooves (19).

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