A concentrating filter capable of automatically filtering residues and a method of using the same

Abstract

The present invention relates to the technical field of concentration and filtration, and in particular to a concentration filter capable of automatically filtering residues and a method of using the concentration filter, comprising a filter cartridge, wherein the top of the filter cartridge is fixedly connected to a feed pipe, the open end of the bottom of the filter cartridge is fixedly connected to a sealing baffle, a strip groove is provided on the sealing baffle, a particle screening mechanism is connected to the inside of the filter cartridge, a primary screen shell is fixedly connected below the sealing baffle, and a preliminary water filtering mechanism is connected to the inside of the primary screen shell; the present invention screens solid particle impurities during the concentration and filtration of sewage, thereby reducing the influence of solid impurities on filter cloth during the concentration and filtration, and by continuously collecting sludge and rigidly pressing the filtered water, the stability and pressure control degree of the sludge concentration process are improved, thereby improving the sludge concentration effect.

Description

Technical Field

[0001] The invention relates to the technical field of concentration and filtration, and in particular to a concentration filter capable of automatically filtering residues and a use method thereof. Background Art

[0002] With the continuous improvement of sewage discharge standards and the continuous development of secondary biochemical treatment processes, the properties of sludge discharged during sewage treatment have changed. During the discharge process, it is necessary to improve the sludge concentration effect to reduce the water content and volume of the sludge, thereby reducing subsequent treatment costs.

[0003] The patent document with announcement number CN115259614B discloses a belt-type concentrating filter press, including a material conveying belt assembly, a material pressing belt assembly and a plurality of pressing rollers which are staggered in sequence up and down, and also includes a water storage and cleaning structure for storing water and spraying water on the material conveying belt assembly and the material pressing belt assembly. The material conveying belt assembly and the material pressing belt assembly are distributed up and down, and there is a gap between the lower side end of the material conveying belt assembly and the upper side end of the material pressing belt assembly for allowing the material to flow in, and the materials pass through the plurality of pressing rollers in sequence to achieve dehydration of the material.

[0004] In the prior art, when concentrating and filtering sludge, the sludge is usually squeezed and filtered by circulating two sets of filter cloths, so that the water contained in the sludge permeates through the filter cloths, and the mud cake produced after concentration is collected from the two sets of filter cloths. In the process of sludge concentration, solid particle impurities mixed in the sludge enter the interior of the two sets of filter cloths, and when the two sets of filter cloths squeeze the sludge, the solid particle impurities are likely to cause damage to the filter cloths, thereby reducing the service life of the filter cloths, and when the sludge is guided and squeezed by the filter cloths, the stability and controllability of the pressure are poor due to the flexible material of the filter cloths, thereby affecting the sludge concentration effect. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a concentration filter capable of automatically filtering residues.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a concentration filter capable of automatically filtering residues, comprising a filter cartridge, the top of the filter cartridge is fixedly connected to a feed pipe, the open end of the bottom of the filter cartridge is fixedly connected to a sealing baffle, a strip groove is provided on the sealing baffle, and the interior of the filter cartridge is connected to a particle screening mechanism;

[0007] A primary screen housing is fixedly connected below the sealing baffle, a preliminary water filtering mechanism is connected inside the primary screen housing, an external connecting ring is arranged at one end of the primary screen housing, a rotating ring is arranged inside the external connecting ring, four material storage circular grooves are opened circumferentially on the outer side of the rotating ring, a filter plate is fixedly connected inside the material storage circular groove, and a circular filter cloth is fixedly connected to the side of the filter plate away from the axis of the rotating ring;

[0008] A connecting feeding mechanism is connected between the primary screen housing and the external connecting ring, an intermittent rotating mechanism is connected to the rotating ring, and a water squeezing filtering mechanism, a material discharging mechanism and a filter cloth cleaning mechanism are connected to the external connecting ring.

[0009] Preferably, the particle screening mechanism includes a fixed plate, which is fixedly connected to the inside of the filter cartridge, an annular screen is fixedly connected between the top of the fixed plate and the top surface of the inside of the filter cartridge, the annular screen is located below the feed pipe, and the bottom of the fixed plate is fixedly connected to a sewage pipe, one end of the sewage pipe passes through the filter cartridge and extends to the outside of the filter cartridge, where a sewage valve is fixedly installed, a plurality of through grooves are opened on the surface of the fixed plate, the through grooves are all located between the annular screen and the inner wall of the filter cartridge, and the inside of the annular screen is connected to a rotating scraping mechanism.

[0010] Preferably, the rotating scraper mechanism includes a rotating shaft, which is rotatably connected to the axis of the sealing baffle, a first motor is fixedly installed on the bottom of the sealing baffle, an output shaft of the first motor is fixedly connected to the bottom end of the rotating shaft, the top end of the rotating shaft passes through the fixed plate and extends to the interior of the annular screen, two strip brushes are fixedly connected to the surface of the rotating shaft, the strip brushes are both located inside the annular screen and rotatably fit with the inner wall of the annular screen, a plurality of first discharge brushes and second discharge brushes are fixedly connected to the surface of the rotating shaft along the circumferential direction, the first discharge brushes are both located on the top of the fixed plate, and the second discharge brushes are both located on the top of the sealing baffle.

[0011] Preferably, the preliminary water filtering mechanism includes an annular filter cloth, which is arranged inside the preliminary screen shell, and the interior of the preliminary screen shell is rotatably connected with multiple connecting shafts, and the connecting shafts are fixedly connected with transmission rollers, and the annular filter cloth is transmission-connected between the multiple transmission rollers, and a second motor is fixedly installed on the preliminary screen shell, and the output shaft of the second motor is fixedly connected to one end of one of the connecting shafts, and first drainage grooves are provided on both sides of the preliminary screen shell, and a conical guide plate is provided inside the annular filter cloth, and the two ends of the conical guide plate are respectively fixedly connected to the bottom surface of the corresponding first drainage groove, and the interior of the preliminary screen shell is fixedly connected with a water storage shell, and the top of the water storage shell is fixedly connected with a plurality of first high-pressure nozzles, and the bottom of the water storage shell is fixedly connected with a first water inlet pipe, the bottom end of the first water inlet pipe passes through the water storage shell and extends to the bottom of the water storage shell, and a second drainage groove is provided at the bottom of the water storage shell.

[0012] Preferably, the connecting feeding mechanism includes an inclined circular tube and a sewage guide frame, the inclined circular tube is fixedly connected to one end of the primary screen shell, the sewage guide frame is fixedly connected to the inside of the primary screen shell, the sewage guide frame and the top surface of the annular filter cloth are fitted together, the sewage guide frame includes a constraint section and a narrowing section, one end of the inclined circular tube is fixedly connected to one side of the top of the external connecting ring, the other end of the inclined circular tube is located below the annular filter cloth, a material receiving trough is provided on the top of one end of the inclined circular tube close to the annular filter cloth, and both ends of the material receiving trough are fixedly connected with material receiving inclined plates.

[0013] Preferably, the intermittent rotation mechanism includes an inner connecting ring, which is located inside the outer connecting ring, and a plurality of connecting plates are fixedly connected between both ends of the inner connecting ring and the outer connecting ring, and the rotating ring is rotatably connected between the inner connecting ring and the outer connecting ring, and an annular groove is provided at one end of the rotating ring, and an internal gear ring is fixedly connected inside the annular groove, and a third motor is fixedly installed on one of the connecting plates, and the output shaft of the third motor passes through the corresponding connecting plate and extends to the inside of the annular groove and is fixedly connected to a gear, and the gear and the internal gear ring are meshed.

[0014] Preferably, the squeeze water filtering mechanism comprises a first circular shell, which is fixedly connected to the other side of the top of the outer connecting ring, a hydraulic cylinder is fixedly installed on the top of the first circular shell, a piston shaft of the hydraulic cylinder passes through the first circular shell and extends to the inside of the first circular shell and is fixedly connected to an extrusion plate, a movable plate is slidably sleeved on the piston shaft of the hydraulic cylinder, and a plurality of circular columns are fixedly connected to the bottom end of the movable plate along the circumferential direction, one end of the circular columns are slidably inserted on the extrusion plate, and springs are sleeved on the circular columns, and the springs are fixedly connected between the extrusion plate and the movable plate, a limited stop ring is fixedly connected to the piston shaft of the hydraulic cylinder, and the movable plate is located between the extrusion plate and the limited stop ring, a blocking frame is fixedly connected to the inside of the first circular shell, and the blocking frame is located on the top of the movable plate, and drainage holes are provided at the bottom of the storage circular groove, and a connecting pipe is fixedly connected to the inside of the inner connecting ring, and the connecting point at one end of the connecting pipe is coaxially arranged with the first circular shell.

[0015] Preferably, the material discharge mechanism includes a connecting hole and an air pump, the connecting hole is opened on one side of the bottom of the outer ring, the air pump is fixedly mounted on the inner ring, the exhaust end of the air pump is fixedly connected to a ventilation pipe, one end of the ventilation pipe is fixedly connected to the inner ring and is coaxially arranged with the connecting hole.

[0016] Preferably, the filter cloth cleaning mechanism includes a second circular shell, which is fixedly connected to the other side of the bottom of the external ring, and a second water inlet pipe is fixedly inserted into the second circular shell. One end of the second water inlet pipe extends to the interior of the second circular shell and a second high-pressure nozzle is fixedly installed thereon, and a third drainage groove is provided at the bottom of the second circular shell.

[0017] A method for using a concentration filter capable of automatically filtering residues, the method comprising the following steps:

[0018] Step 1: Pour the sewage to be treated into the filter cartridge through the feed pipe, and screen the solid particle impurities mixed in the sewage through the particle screening mechanism, and make the screened sewage flow downward along the strip groove on the sealing baffle to the interior of the primary screening shell;

[0019] Step 2: Preliminary water filtration and concentration are performed through the action of the preliminary water filtration mechanism, thereby separating a large amount of free water in the sewage and forming flowing sludge, and then the sludge is allowed to enter the storage circular groove corresponding to the surface of the rotating ring from the inside of the primary screen shell through the action of the connecting feed mechanism;

[0020] Step three, the intermittent rotating mechanism is used to make the rotating ring intermittently rotate ninety degrees inside the external ring, and during the rotation, the sludge in the storage circular trough is squeezed and filtered, the material is discharged, and the filter cloth is cleaned in turn through the action of the squeezing and filtering mechanism, the material is discharged, and the filter cloth is cleaned, so that the sludge is effectively squeezed and concentrated to form a mud cake.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the process of sewage concentration and filtration, solid particle impurities are screened to reduce the impact of solid impurities on the filter cloth during concentration and filtration. In addition, by continuously collecting sludge and rigidly pressing filtered water, the stability and pressure control degree of sludge concentration process are improved, thereby improving the sludge concentration effect.

[0023] 2. The sludge generated after the initial water filtration is transferred through the action of the connecting feed mechanism. After the surface of the annular filter cloth for infiltration filtration of the sewage moves to the top of the first high-pressure nozzle, it is connected to the water source through the first water inlet pipe, so that the water source enters the water storage shell along the first water inlet pipe and is sprayed along multiple first high-pressure nozzles, thereby performing high-pressure washing on the surface of the annular filter cloth, and the wastewater generated by the washing during the washing process is discharged along the second drainage trough, reducing the influence of the sludge remaining on the surface of the annular filter cloth on the subsequent infiltration filtration, thereby ensuring the concentrated filtration effect of the annular filter cloth.

[0024] 3. The water in the sludge passes through the circular filter cloth and moves along the filter holes on the filter plate to the drain holes, and is discharged along the connection between the drain holes and the connecting pipe, thereby squeezing and filtering the sludge inside the storage circular trough, so that the sludge is further concentrated into a mud cake. After the extrusion is completed, the piston shaft of the hydraulic cylinder moves in the opposite direction to the initial position, and the movable plate is blocked by the blocking frame instead of the limit ring, so that the spring is compressed and deformed, and the circular column moves along the sliding joint of the extrusion plate and protrudes from the extrusion surface of the extrusion plate. After the extrusion plate returns to the initial position, when the extruded mud cake adheres to the extrusion plate, the protruding push of multiple circular columns separates the mud cake from the extrusion plate.

[0025] 4. High-pressure gas is delivered to the ventilation pipe through the exhaust end of the air pump, so that the high-pressure gas enters the storage circular groove along the drainage hole, and passes through the filter plate and the circular filter cloth in turn, so that the mud cake inside the storage circular groove is moved outward by air pressure and discharged outward along the connecting hole, thereby discharging the extruded and concentrated mud cake. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a first structural schematic diagram of the present invention;

[0027] Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement at point A;

[0028] Figure 3 It is a second structural schematic diagram of the present invention;

[0029] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at B in FIG.

[0030] Figure 5 It is a schematic diagram of the first matching structure of the filter cartridge and the sealing baffle of the present invention (the filter cartridge is cut away);

[0031] Figure 6 It is a schematic diagram of the second matching structure of the filter cartridge and the sealing baffle of the present invention (the filter cartridge is cut and the annular screen is hidden);

[0032] Figure 7 This is a schematic diagram of the matching structure of the primary screen housing and the external connecting ring of the present invention (the primary screen housing, the rotating ring, the first circular housing and the second circular housing are cut);

[0033] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at position C in FIG.

[0034] Fig. 9 For the present invention Figure 7 A schematic diagram of the structure at D in FIG.

[0035] Fig.10 For the present invention Figure 7 A schematic diagram of the structure at position E in FIG.

[0036] Fig.11 For the present invention Figure 7 A magnified schematic diagram of the structure at F in FIG.

[0037] Fig.12 For the present invention Figure 7 A schematic diagram of the structure at G in FIG.

[0038] Fig.13 It is a schematic diagram of the matching structure of the first circular shell and the extrusion plate of the present invention (the first circular shell is cut).

[0039] In the figure: 1. filter cartridge; 2. feed pipe; 3. sealing baffle; 4. strip groove; 5. primary screen housing; 6. external ring; 7. rotating ring; 8. storage circular groove; 9. filter plate; 10. circular filter cloth; 11. fixed plate; 12. annular screen; 13. sewage pipe; 14. sewage valve; 15. through groove; 16. rotating shaft; 17. first motor; 18. strip brush; 19. first discharge brush; 20. second discharge brush; 21. annular filter cloth; 22. connecting shaft; 23. transmission roller; 24. second motor; 25. first drainage groove; 26. conical guide plate; 27. water storage housing; 2701. first high-pressure nozzle; 28. first water inlet pipe; 29. ​​second drainage Groove; 30, inclined circular pipe; 31, sewage guide frame; 3101, constraint section; 3102, narrowing section; 32, material receiving groove; 33, material receiving inclined plate; 34, inner connecting ring; 35, connecting plate; 36, annular groove; 37, inner gear ring; 38, third motor; 39, gear; 40, first circular shell; 41, hydraulic cylinder; 42, extrusion plate; 43, movable plate; 44, circular column; 45, spring; 46, limit stop ring; 47, blocking frame; 48, drainage hole; 49, connecting pipe; 50, connecting hole; 51, air pump; 52, ventilation pipe; 53, second circular shell; 54, second water inlet pipe; 55, second high-pressure nozzle; 56, third drainage groove. DETAILED DESCRIPTION

[0040] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0041] like Figures 1 to 13 The concentrated filter capable of automatically filtering residues shown in the figure comprises a filter cartridge 1, the top of the filter cartridge 1 is fixedly connected to a feed pipe 2, the open end of the bottom of the filter cartridge 1 is fixedly connected to a sealing baffle 3, a strip groove 4 is formed on the sealing baffle 3, and the interior of the filter cartridge 1 is connected to a particle screening mechanism;

[0042] A primary screen housing 5 is fixedly connected below the sealing baffle 3, a preliminary water filtering mechanism is connected inside the primary screen housing 5, an external ring 6 is arranged at one end of the primary screen housing 5, a rotating ring 7 is arranged inside the external ring 6, four material storage circular grooves 8 are opened circumferentially on the outer side of the rotating ring 7, a filter plate 9 is fixedly connected inside the material storage circular groove 8, and a circular filter cloth 10 is fixedly connected to the side of the filter plate 9 away from the axis of the rotating ring 7;

[0043] A connecting feed mechanism is connected between the primary screen shell 5 and the external ring 6, an intermittent rotating mechanism is connected to the rotating ring 7, and an extruding water filtering mechanism, a material discharging mechanism and a filter cloth cleaning mechanism are connected to the external ring 6; during operation, the prior art usually utilizes the cyclic movement of two groups of filter cloths to extrude and filter the sludge when concentrating and filtering the sludge, so that the water contained in the sludge penetrates through the filter cloth, and the mud cake produced after concentration is collected from the two groups of filter cloths. During the sludge concentration treatment process, the solid particle impurities mixed in the sludge enter the interior of the two groups of filter cloths, and when the two groups of filter cloths squeeze the sludge, the solid particle impurities are likely to cause damage to the filter cloth, thereby reducing the service life of the filter cloth, and when the sludge is guided and squeezed by the filter cloth, the stability and controllability of the pressure are poor due to the flexible material of the filter cloth, thereby affecting the concentration effect of the sludge; the technical solution can solve the above problems, and the specific working method is as follows: the sewage to be treated is poured into the interior of the filter cylinder 1 along the feed pipe 2, and the solid impurities mixed in the sewage are sifted by the particle screening mechanism. The particle impurities are screened, and the screened sewage flows downward along the strip grooves 4 on the sealing baffle 3 to the inside of the primary screen housing 5, and is initially filtered and concentrated by the action of the preliminary water filtering mechanism, thereby separating a large amount of free water in the sewage and forming flowing sludge, and then the sludge is made to enter the storage circular groove 8 corresponding to the surface of the rotating ring 7 from the inside of the primary screen housing 5 through the action of the connecting feeding mechanism, and the rotating ring 7 is made to intermittently rotate ninety degrees inside the external ring 6 through the action of the intermittent rotating mechanism, and in the process of rotation, the sludge in the storage circular groove 8 is squeezed and filtered, the material is discharged, and the filter cloth is cleaned in turn through the action of the squeezing water filtering mechanism, the material discharge mechanism and the filter cloth cleaning mechanism, so that the sludge is effectively squeezed and concentrated to form a mud cake, and solid particle impurities are screened in the process of concentrating and filtering the sewage, thereby reducing the influence of solid impurities on the filter cloth during concentration and filtration, and by continuously collecting the sludge and rigidly pressing the filtered water, the stability and pressure control degree of the sludge concentration process are improved, thereby improving the sludge concentration effect.

[0044] As a further embodiment of the present invention, the particle screening mechanism comprises a fixed plate 11 (such as Figure 5As shown in the figure, the fixing plate 11 is fixedly connected to the inside of the filter cartridge 1, and an annular screen 12 is fixedly connected between the top of the fixing plate 11 and the top surface of the inside of the filter cartridge 1, and the annular screen 12 is located below the feed pipe 2. The bottom of the fixing plate 11 is fixedly connected to a sewage pipe 13, and one end of the sewage pipe 13 passes through the filter cartridge 1 and extends to the outside of the filter cartridge 1, and a sewage valve 14 is fixedly installed thereafter. A plurality of through grooves 15 are provided on the surface of the fixing plate 11, and the through grooves 15 are all located between the annular screen 12 and the inner wall of the filter cartridge 1, and a rotating scraping mechanism is connected to the inside of the annular screen 12; when working, the sewage It moves downward along the feed pipe 2 and enters the interior of the annular screen 12, and the solid impurities mixed in the sewage are filtered through the filter holes on the surface of the annular screen 12, so that the solid impurities are collected inside the annular screen 12, and the sewage flows outward along the filter holes on the surface of the annular screen 12, and flows downward along the multiple through grooves 15 on the fixed plate 11, and is located on the top of the sealing baffle 3. After the screening is completed, the solid impurities are discharged outward along the sewage pipe 13 by opening the sewage valve 14, and the filtered sewage flows downward along the strip grooves 4 on the sealing baffle 3 and enters the interior of the primary screen shell 5.

[0045] As a further embodiment of the present invention, the rotary scraper mechanism includes a rotating shaft 16, which is rotatably connected to the axis of the sealing baffle 3. A first motor 17 is fixedly installed at the bottom of the sealing baffle 3. The output shaft of the first motor 17 is fixedly connected to the bottom end of the rotating shaft 16. The top of the rotating shaft 16 passes through the fixed plate 11 and extends to the inside of the annular screen 12. Two strip brushes 18 are fixedly connected to the surface of the rotating shaft 16. The strip brushes 18 are all located inside the annular screen 12 and rotatably fit with the inner wall of the annular screen 12. A plurality of first discharge brushes 19 and second discharge brushes 20 are fixedly connected to the surface of the rotating shaft 16 along the circumferential direction. The first discharge brushes 19 are all located at the top of the fixed plate 11, and the second discharge brushes 20 are all located at the top of the sealing baffle 3. When working, the first motor 17 is used to rotate the first motor 17 to rotate the first motor 17. The rotation of the output shaft drives the rotating shaft 16 to rotate, so that the strip brush 18 rotates unidirectionally inside the annular screen 12 and scrapes the inner wall of the annular screen 12, thereby reducing the blockage of the filter holes on the surface of the annular screen 12 and ensuring the filtering effect of the annular screen 12. In the process of the rotation of the rotating shaft 16, the first discharge brush 19 and the second discharge brush 20 are driven to rotate synchronously. The first discharge brush 19 rotates on the top of the fixed plate 11, and rotates and brushes the solid impurity particles generated by the filtration on the top of the fixed plate 11, thereby moving the solid impurity particles to the fixed connection between the sewage pipe 13 and the fixed plate 11. The second discharge brush 20 rotates and brushes on the top of the sealing baffle 3, so that the sewage on the top of the sealing baffle 3 moves toward the strip groove 4 and enters the inside of the strip groove 4, thereby improving the discharge efficiency of sewage.

[0046] As a further embodiment of the present invention, the preliminary water filtering mechanism comprises an annular filter cloth 21 (such as Figure 8 As shown, the annular filter cloth 21 is arranged inside the primary screen housing 5, and a plurality of connecting shafts 22 are rotatably connected inside the primary screen housing 5, and a transmission roller 23 is fixedly connected to each connecting shaft 22. The annular filter cloth 21 is transmission-connected between the plurality of transmission rollers 23, and a second motor 24 (as shown) is fixedly installed on the primary screen housing 5. Figure 4 As shown in the figure, the output shaft of the second motor 24 is fixedly connected to one end of one of the connecting shafts 22, first drainage grooves 25 are provided on both sides of the primary screen housing 5, a conical guide plate 26 is provided inside the annular filter cloth 21, and the two ends of the conical guide plate 26 are respectively fixedly connected to the bottom surface of the corresponding first drainage groove 25, and a water storage housing 27 is fixedly connected to the inside of the primary screen housing 5, and the top of the water storage housing 27 is fixedly connected to a plurality of first high-pressure nozzles 2701, and the bottom of the water storage housing 27 is fixedly connected to a first water inlet pipe 28, and the bottom end of the first water inlet pipe 28 passes through the water storage housing 27 and extends to the bottom of the water storage housing 27, and a second drainage groove 29 is provided at the bottom of the water storage housing 27; when working, the sewage flows downward along the strip groove 4 on the sealing baffle 3 and falls on the top surface of the annular filter cloth 21, and the corresponding connecting shaft 22 and the transmission roller 23 are driven to rotate by the output shaft of the second motor 24, and the annular filter cloth 21 is driven to perform unidirectional The annular filter cloth 21 moves, and at the same time, the other driving rollers 23 drive the corresponding connecting shaft 22 to move in coordination. During the movement of the annular filter cloth 21, the sewage on the top of the annular filter cloth 21 is osmotically separated under its own gravity, so that free water passes through the annular filter cloth 21 and flows to the top of the conical guide plate 26. The free water is discharged along the first drainage grooves 25 on both sides through the inclined guiding effect of the conical guide plate 26. The sludge generated after the preliminary water filtration is transferred through the action of the connecting feeding mechanism. After the surface of the annular filter cloth 21 that osmotic filters the sewage moves to the top of the first high-pressure nozzle 2701, it is connected to the water source through the first water inlet pipe 28, so that the water source enters the water storage shell 27 along the first water inlet pipe 28 and is sprayed along multiple first high-pressure nozzles 2701, thereby performing high-pressure washing on the surface of the annular filter cloth 21, and the waste water generated by the washing is discharged along the second drainage groove 29 during the washing process, thereby reducing the influence of the sludge remaining on the surface of the annular filter cloth 21 on the subsequent osmotic filtration, and ensuring the concentrated filtration effect of the annular filter cloth 21.

[0047] As a further embodiment of the present invention, the connecting feed mechanism includes an inclined circular pipe 30 and a sewage guide frame 31 (such as Figure 4As shown in the figure, the inclined circular tube 30 is fixedly connected to one end of the primary screen housing 5, the sewage guide frame 31 is fixedly connected to the inside of the primary screen housing 5, the sewage guide frame 31 is fitted with the top surface of the annular filter cloth 21, the sewage guide frame 31 includes a restraining section 3101 and a narrowing section 3102, one end of the inclined circular tube 30 is fixedly connected to one side of the top of the external ring 6, the other end of the inclined circular tube 30 is located below the annular filter cloth 21, and a material receiving groove 32 is provided on the top of one end of the inclined circular tube 30 close to the annular filter cloth 21, and both ends of the material receiving groove 32 are fixedly connected with material receiving inclined plates 33; during operation, when the sewage is located on the top of the annular filter cloth 21 and moves toward the inclined circular tube 30 with the annular filter cloth 21, the sewage passes through the sewage. The constraint section 3101 of the water guide frame 31 blocks the sewage so that the sewage is guided to flow inside the sewage guide frame 31, and is concentrated by infiltration through the annular filter cloth 21, and then the concentrated sludge is moved and gathered into the narrowing section 3102 through the narrowing section 3102, and after moving to one end of the annular filter cloth 21, it falls into the receiving trough 32 of the inclined circular tube 30, and the receiving inclined plates 33 at both ends of the receiving trough 32 are used to increase the receiving area of ​​the sludge, and then it moves along the inclination direction of the inclined circular tube 30 toward the external ring 6, and moves along the fixed connection between the inclined circular tube 30 and the external ring 6 to the corresponding storage circular groove 8, and the sludge is transferred and collected through the storage circular groove 8 on the rotating ring 7.

[0048] As a further embodiment of the present invention, the intermittent rotation mechanism includes an inner ring 34, which is located inside the outer ring 6. A plurality of connecting plates 35 are fixedly connected between the two ends of the inner ring 34 and the outer ring 6. The rotating ring 7 is rotatably connected between the inner ring 34 and the outer ring 6. An annular groove 36 is provided at one end of the rotating ring 7. An inner gear ring 37 is fixedly connected inside the annular groove 36. A third motor 38 is fixedly mounted on one of the connecting plates 35. The output shaft of the third motor 38 passes through the corresponding connecting plate 35 and extends to the inside of the annular groove 36. A gear 39 is fixedly connected thereto. The gear 39 is meshed with the inner gear ring 37. When working, the gear 39 is rotated by the output shaft of the third motor 38, and the inner gear ring 37 is meshed and rotated by the meshing action of the gear 39 and the inner gear ring 37, so that the rotating ring 7 is unidirectionally rotated between the inner ring 34 and the outer ring 6. The third motor 38 performs periodic intermittent work to make the rotating ring 7 intermittently rotate by ninety degrees.

[0049] As a further embodiment of the present invention, the squeeze water filter mechanism includes a first circular shell 40, the first circular shell 40 is fixedly connected to the other side of the top of the external ring 6, a hydraulic cylinder 41 is fixedly installed on the top of the first circular shell 40, and the piston shaft of the hydraulic cylinder 41 passes through the first circular shell 40 and extends to the inside of the first circular shell 40, and then a squeeze plate 42 (such as Fig.13As shown in the figure), a movable plate 43 is slidably sleeved on the piston shaft of the hydraulic cylinder 41, and a plurality of circular columns 44 are fixedly connected to the bottom end of the movable plate 43 along the circumferential direction. One end of the circular columns 44 is slidably inserted on the extrusion plate 42, and a spring 45 is sleeved on the circular columns 44. The spring 45 is fixedly connected between the extrusion plate 42 and the movable plate 43. A limited stop ring 46 is fixedly connected to the piston shaft of the hydraulic cylinder 41, and the movable plate 43 is located between the extrusion plate 42 and the limited stop ring 46. A blocking frame 47 is fixedly connected to the inside of the first circular shell 40, and the blocking frame 47 is located on the top of the movable plate 43. Drain holes 48 are provided at the bottom of the storage circular groove 8, and a connecting pipe 49 is fixedly connected to the inside of the inner ring 34 (as shown in the figure). Figure 2 and Fig.10 As shown in the figure, the connection point at one end of the connecting pipe 49 is coaxially arranged with the first circular shell 40; during operation, the rotating ring 7 is rotatably connected between the outer ring 6 and the inner ring 34, so that the drain hole 48 is always slidably sealed by the arc surface of the inner ring 34 before being connected with the connecting pipe 49, and the rotating ring 7 is periodically rotated by ninety degrees under the action of the intermittent rotating mechanism, and one end of the storage groove 8 collecting the sludge is located at the fixed connection point between the outer ring 6 and the first circular shell 40 after intermittent rotation, and the extrusion plate 42 is driven to move into the storage groove 8 by the movement of the piston shaft of the hydraulic cylinder 41, and in the process of the extrusion plate 42 gradually moving away from the blocking frame 47, the movable plate 43 loses the extrusion blockage of the blocking frame 47, and under the elastic extension action of the spring 45, the movable plate 43 drives the multiple circular columns 44 to move, and the movable plate 43 is blocked again by the limit stop ring 46, so that one end of the multiple circular columns 44 is flush with the extrusion surface of the extrusion plate 42, thereby When the sludge is moved to the inside of the storage circular groove 8 to squeeze the sludge, the squeezing plate 42 and one end of the plurality of circular columns 44 form a complete circular plane and squeeze and drain the sludge inside the storage circular groove 8. In the squeezing process, the water in the sludge passes through the circular filter cloth 10, moves along the filter holes on the filter plate 9 to the drainage hole 48, and is discharged along the connection between the drainage hole 48 and the connecting pipe 49, thereby squeezing and filtering the sludge inside the storage circular groove 8, so that the sludge is further concentrated into a mud cake. After the squeezing is completed, the piston shaft of the hydraulic cylinder 41 moves in the opposite direction to the initial position, and the stop frame 47 replaces the limit stop ring 46 to block the movable plate 43, so that the spring 45 generates compression deformation, and the circular column 44 moves along the sliding insertion of the squeezing plate 42 and protrudes from the squeezing surface of the squeezing plate 42, so that after the squeezing plate 42 returns to the initial position, when the squeezed mud cake adheres to the squeezing plate 42, the protruding push of the plurality of circular columns 44 separates the mud cake from the squeezing plate 42.

[0050] As a further embodiment of the present invention, the material discharge mechanism includes a connecting hole 50 and an air pump 51, the connecting hole 50 is opened on one side of the bottom of the outer ring 6, the air pump 51 is fixedly installed on the inner ring 34, and the exhaust end of the air pump 51 is fixedly connected with a ventilation pipe 52, one end of the ventilation pipe 52 is fixedly connected to the inner ring 34 and is coaxially arranged with the connecting hole 50; during operation, after the sludge inside the storage circular groove 8 is squeezed and filtered to form a mud cake, one end of the storage circular groove 8 is connected to the connecting hole 50 through the intermittent rotation of the rotating ring 7, and the corresponding drainage hole 48 on the rotating ring 7 is connected to one end of the ventilation pipe 52, and high-pressure gas is transported into the ventilation pipe 52 through the exhaust end of the air pump 51, so that the high-pressure gas enters the storage circular groove 8 along the drainage hole 48, and the high-pressure gas passes through the filter plate 9 and the circular filter cloth 10 in turn, so that the mud cake inside the storage circular groove 8 is moved outward by air pressure, and discharged outward along the connecting hole 50, so as to discharge the extruded and concentrated mud cake.

[0051] As a further embodiment of the present invention, the filter cloth cleaning mechanism includes a second circular shell 53, which is fixedly connected to the other side of the bottom of the external ring 6, and a second water inlet pipe 54 is fixedly inserted on the second circular shell 53. One end of the second water inlet pipe 54 extends to the inside of the second circular shell 53 and is fixedly installed with a second high-pressure nozzle 55. A third drainage groove 56 is provided at the bottom of the second circular shell 53. During operation, after the sludge in the storage circular groove 8 is discharged, the storage circular groove 8 and the second circular shell 53 are connected through the intermittent rotation of the rotating ring 7. By connecting the water source at one end of the second water inlet pipe 54, the water source is sprayed into the storage circular groove 8 at high pressure through the second high-pressure nozzle 55, and the circular filter cloth 10 in the storage circular groove 8 is flushed. The waste water generated by the flushing flows and is discharged along the third drainage groove 56, ensuring that the circular filter cloth 10 can be effectively cleaned before each squeezing and filtering water, thereby ensuring the water filtering efficiency of the circular filter cloth 10 and the efficiency of sludge concentration and filtering water.

[0052] A method for using a concentration filter capable of automatically filtering residues, the method comprising the following steps:

[0053] Step 1: Pour the sewage to be treated into the filter cartridge 1 through the feed pipe 2, and screen the solid particle impurities mixed in the sewage through the particle screening mechanism, and make the screened sewage flow downward along the strip groove 4 on the sealing baffle 3 to the interior of the primary screening shell 5;

[0054] Step 2: Preliminary water filtration and concentration are performed through the action of the preliminary water filtration mechanism, thereby separating a large amount of free water in the sewage and forming flowing sludge, and then the sludge is allowed to enter the storage circular groove 8 corresponding to the surface of the rotating ring 7 from the inside of the primary screen housing 5 through the action of the connecting feed mechanism;

[0055] Step three, the intermittent rotating mechanism is used to make the rotating ring 7 intermittently rotate ninety degrees inside the external ring 6, and during the rotation process, the sludge in the storage circular trough 8 is squeezed and filtered, the material is discharged, and the filter cloth is cleaned in turn through the action of the squeezing and filtering mechanism, the material is discharged, and the filter cloth is cleaned, so that the sludge is effectively squeezed and concentrated to form a mud cake.

[0056] Working principle of the present invention:

[0057] The sewage to be treated is poured into the filter cartridge 1 along the feed pipe 2, and the solid particle impurities mixed in the sewage are screened by the particle screening mechanism, and the screened sewage flows downward along the strip groove 4 on the sealing baffle 3 to the inside of the primary screen housing 5, and is initially filtered and concentrated by the preliminary water filtering mechanism, thereby separating a large amount of free water in the sewage and forming flowing sludge, and then the sludge is passed from the inside of the primary screen housing 5 to the corresponding storage circular groove 8 on the surface of the rotating ring 7 through the action of the connecting feed mechanism, and the rotating ring 7 is rotated inside the external ring 6 through the action of the intermittent rotating mechanism. It performs intermittent rotation of 90 degrees, and in the process of rotation, through the functions of squeezing and filtering water mechanism, material discharging mechanism and filter cloth cleaning mechanism, the sludge in the storage circular groove 8 is squeezed and filtered, the material is discharged and the filter cloth is cleaned in turn, so that the sludge is effectively squeezed and concentrated to form a mud cake, and solid particulate impurities are screened in the process of sewage concentration and filtration, so as to reduce the influence of solid impurities on the filter cloth during concentration and filtration, and through continuous collection of sludge and rigid pressing of filtered water, the stability of the sludge concentration process and the degree of pressure control are improved, thereby improving the sludge concentration effect.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A concentration filter capable of automatically filtering residues, comprising a filter cartridge (1), characterized in that: The top of the filter cartridge (1) is fixedly connected to a feed pipe (2), the open end of the bottom of the filter cartridge (1) is fixedly connected to a sealing baffle (3), a strip groove (4) is provided on the sealing baffle (3), and the interior of the filter cartridge (1) is connected to a particle screening mechanism; A primary screen housing (5) is fixedly connected below the sealing baffle (3), a preliminary water filtering mechanism is connected inside the primary screen housing (5), an external connection ring (6) is provided at one end of the primary screen housing (5), a rotating ring (7) is provided inside the external connection ring (6), four material storage circular grooves (8) are provided on the outer side of the rotating ring (7) along the circumferential direction, a filter plate (9) is fixedly connected inside the material storage circular groove (8), and a circular filter cloth (10) is fixedly connected to the side of the filter plate (9) away from the axis of the rotating ring (7); A connecting feeding mechanism is connected between the primary screen housing (5) and the external connecting ring (6), an intermittent rotating mechanism is connected to the rotating ring (7), and a water squeezing and filtering mechanism, a material discharging mechanism and a filter cloth cleaning mechanism are connected to the external connecting ring (6); The particle screening mechanism comprises a fixed plate (11), the fixed plate (11) being fixedly connected to the inside of the filter cartridge (1), an annular screen (12) being fixedly connected between the top of the fixed plate (11) and the top surface of the inside of the filter cartridge (1), the annular screen (12) being located below the feed pipe (2), a sewage discharge pipe (13) being fixedly connected to the bottom of the fixed plate (11), one end of the sewage discharge pipe (13) passing through the filter cartridge (1) and extending to the outside of the filter cartridge (1) and then fixedly installed with a sewage discharge valve (14), a plurality of through grooves (15) being provided on the surface of the fixed plate (11), the through grooves (15) being all located between the annular screen (12) and the inner wall of the filter cartridge (1), and a rotating scraping mechanism being connected to the inside of the annular screen (12); The preliminary water filtering mechanism comprises an annular filter cloth (21), the annular filter cloth (21) being arranged inside the primary screen housing (5), the interior of the primary screen housing (5) being rotatably connected to a plurality of connecting shafts (22), each of which is fixedly connected to a transmission roller (23), the annular filter cloth (21) being transmission-connected between the plurality of transmission rollers (23), a second motor (24) being fixedly mounted on the primary screen housing (5), an output shaft of the second motor (24) being fixedly connected to one end of one of the connecting shafts (22), first drainage grooves (25) being provided on both sides of the primary screen housing (5), the annular filter cloth A conical guide plate (26) is provided inside the (21), and the two ends of the conical guide plate (26) are respectively fixedly connected to the bottom surface of the corresponding first drainage groove (25), and the interior of the primary screen shell (5) is fixedly connected to a water storage shell (27), and the top of the water storage shell (27) is fixedly connected to a plurality of first high-pressure nozzles (2701), and the bottom of the water storage shell (27) is fixedly connected to a first water inlet pipe (28), and the bottom end of the first water inlet pipe (28) passes through the water storage shell (27) and extends to the bottom of the water storage shell (27), and a second drainage groove (29) is provided at the bottom of the water storage shell (27); The intermittent rotating mechanism comprises an inner connecting ring (34), the inner connecting ring (34) being located inside the outer connecting ring (6), a plurality of connecting plates (35) being fixedly connected between the two ends of the inner connecting ring (34) and the outer connecting ring (6), the rotating ring (7) being rotatably connected between the inner connecting ring (34) and the outer connecting ring (6), an annular groove (36) being provided at one end of the rotating ring (7), an inner gear ring (37) being fixedly connected inside the annular groove (36), a third motor (38) being fixedly mounted on one of the connecting plates (35), an output shaft of the third motor (38) passing through the corresponding connecting plate (35) and extending to the inside of the annular groove (36) and then fixedly connected to a gear (39), the gear (39) being meshed with the inner gear ring (37); The squeezing water filtering mechanism comprises a first circular shell (40), the first circular shell (40) being fixedly connected to the other side of the top of the external connecting ring (6), a hydraulic cylinder (41) being fixedly installed on the top of the first circular shell (40), a piston shaft of the hydraulic cylinder (41) passing through the first circular shell (40) and extending to the inside of the first circular shell (40) and then being fixedly connected to an extrusion plate (42), a movable plate (43) being slidably sleeved on the piston shaft of the hydraulic cylinder (41), a plurality of circular columns (44) being fixedly connected to the bottom end of the movable plate (43) along the circumferential direction, one end of each of the circular columns (44) being slidably inserted on the extrusion plate (42), and each of the circular columns (44) being sleeved with a plurality of circular columns (44) A spring (45), wherein the spring (45) is fixedly connected between the extrusion plate (42) and the movable plate (43); a limit stop ring (46) is fixedly connected to the piston shaft of the hydraulic cylinder (41); the movable plate (43) is located between the extrusion plate (42) and the limit stop ring (46); a stop frame (47) is fixedly connected to the interior of the first circular shell (40); the stop frame (47) is located on the top of the movable plate (43); a drainage hole (48) is provided at the bottom of the material storage groove (8); a connecting pipe (49) is fixedly connected to the interior of the inner ring (34); and a connecting point at one end of the connecting pipe (49) is coaxially arranged with the first circular shell (40).

2. A concentration filter capable of automatically filtering residues according to claim 1, characterized in that: The rotary scraper mechanism comprises a rotating shaft (16), wherein the rotating shaft (16) is rotatably connected to the axis of the sealing baffle (3), a first motor (17) is fixedly mounted at the bottom of the sealing baffle (3), an output shaft of the first motor (17) is fixedly connected to the bottom end of the rotating shaft (16), a top end of the rotating shaft (16) passes through the fixed plate (11) and extends to the inside of the annular screen (12), two strip brushes (18) are fixedly connected to the surface of the rotating shaft (16), the strip brushes (18) are both located inside the annular screen (12) and rotatably fit with the inner wall of the annular screen (12), and a plurality of first discharge brushes (19) and second discharge brushes (20) are fixedly connected to the surface of the rotating shaft (16) along the circumferential direction, the first discharge brushes (19) are both located at the top of the fixed plate (11), and the second discharge brushes (20) are both located at the top of the sealing baffle (3).

3. A concentration filter capable of automatically filtering residues according to claim 2, characterized in that: The connecting feeding mechanism comprises an inclined circular tube (30) and a sewage guide frame (31); the inclined circular tube (30) is fixedly connected to one end of the primary screen housing (5); the sewage guide frame (31) is fixedly connected to the interior of the primary screen housing (5); the sewage guide frame (31) and the top surface of the annular filter cloth (21) are in contact with each other; the sewage guide frame (31) comprises a restraining section (3101) and a narrowing section (3102); one end of the inclined circular tube (30) is fixedly connected to one side of the top of the external connecting ring (6); the other end of the inclined circular tube (30) is located below the annular filter cloth (21); a material receiving groove (32) is provided at the top of one end of the inclined circular tube (30) close to the annular filter cloth (21); and both ends of the material receiving groove (32) are fixedly connected to material receiving inclined plates (33).

4. A concentration filter capable of automatically filtering residues according to claim 3, characterized in that: The material discharge mechanism comprises a connecting hole (50) and an air pump (51); the connecting hole (50) is provided on one side of the bottom of the outer connecting ring (6); the air pump (51) is fixedly mounted on the inner connecting ring (34); an exhaust end of the air pump (51) is fixedly connected to a ventilation pipe (52); one end of the ventilation pipe (52) is fixedly connected to the inner connecting ring (34) and is coaxially arranged with the connecting hole (50).

5. A concentration filter capable of automatically filtering residues according to claim 4, characterized in that: The filter cloth cleaning mechanism comprises a second circular shell (53), the second circular shell (53) being fixedly connected to the other side of the bottom of the external connecting ring (6), a second water inlet pipe (54) being fixedly inserted into the second circular shell (53), a second high-pressure nozzle (55) being fixedly installed after one end of the second water inlet pipe (54) extends into the interior of the second circular shell (53), and a third drainage groove (56) is provided at the bottom of the second circular shell (53).

6. A method for using a concentration filter capable of automatically filtering residues, applicable to a concentration filter capable of automatically filtering residues as claimed in any one of claims 1 to 5, characterized in that: The method comprises the following steps: Step 1: Pour the sewage to be treated into the interior of the filter cartridge (1) along the feed pipe (2), and screen the solid particle impurities mixed in the sewage through the particle screening mechanism, and make the screened sewage flow downward along the strip groove (4) on the sealing baffle (3) to the interior of the primary screening housing (5); Step 2: Preliminary water filtration and concentration are performed through the action of the preliminary water filtration mechanism, thereby separating a large amount of free water in the sewage and forming flowing sludge, and then the sludge is passed from the interior of the primary screen housing (5) into the corresponding storage circular groove (8) on the surface of the rotating ring (7) through the action of the connecting feed mechanism; Step 3: The intermittent rotating mechanism causes the rotating ring (7) to intermittently rotate ninety degrees inside the external ring (6), and during the rotation, the squeezing and filtering mechanism, the material discharging mechanism and the filter cloth cleaning mechanism sequentially squeeze and filter the sludge in the storage trough (8), discharge the material and clean the filter cloth, so that the sludge is effectively squeezed and concentrated to form a mud cake.

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