Concentrated wastewater filter

Abstract

The utility model discloses a kind of concentrated wastewater filters, including filter assembly, valve assembly and pusher assembly, filter assembly includes the shell of upper and lower opening and the filter cartridge being arranged in shell, and the upper and lower ends of shell peripheral wall are respectively arranged water inlet and water outlet, and gap is equipped between the outer wall of filter cartridge and the inner wall of shell, concentrated wastewater is filtered by water inlet into filter cartridge, and is discharged by water outlet;Valve assembly is arranged at the bottom of filter assembly, including with filter cartridge communication's drop port, and for opening and closing drop port's opening and closing piece;Pusher assembly is arranged at the top of filter assembly, including with filter cartridge coaxially arranged pusher plate, and for driving pusher plate moves down and makes the crystal in filter cartridge from drop port discharge's first drive mechanism.The utility model is basically no energy consumption, and the cost of wastewater treatment is optimized;Concentrated wastewater is efficiently filtered by filter assembly;In addition, through the cooperation of pusher assembly and valve assembly, the automatic discharge of crystal is realized, overall operation is convenient, and easy to maintain and manage.

Description

Technical Field

[0001] This utility model relates to the field of wastewater or sewage treatment technology, and in particular to a concentrated wastewater filter for solid-liquid separation of concentrated wastewater generated after treatment in an evaporation and concentration tank. Background Technology

[0002] In wastewater treatment, evaporation and concentration is a commonly used method. After wastewater is concentrated in an evaporation and concentration tank, concentrated wastewater containing a large number of crystals will be produced.

[0003] Centrifuges are a common method for solid-liquid separation of concentrated wastewater, widely used in many industries. However, they also have some drawbacks in actual operation: ① High energy consumption: Centrifuges rely on centrifugal force generated by high-speed rotation to achieve solid-liquid separation. To achieve sufficient separation, the drum needs to operate at a high speed, which consumes a large amount of electrical energy. ② High noise and vibration: The high-speed rotating drum and unbalanced material distribution generate significant noise and vibration. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides a concentrated wastewater filter that effectively reduces energy consumption, noise and vibration, while achieving efficient solid-liquid separation.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to provide a concentrated wastewater filter, including a filter assembly, a valve assembly and a pusher assembly. The filter assembly includes a shell with openings at the top and bottom and a filter cylinder disposed inside the shell. The upper and lower ends of the peripheral wall of the shell are respectively provided with an inlet and an outlet. A gap is provided between the outer wall of the filter cylinder and the inner wall of the shell. Concentrated wastewater enters the filter cylinder through the inlet, is filtered, and is discharged through the outlet. The valve assembly is located at the bottom of the filter assembly and includes a discharge port communicating with the filter cartridge and an opening / closing component for opening and closing the discharge port. The feeding assembly is located on top of the filter assembly and includes a feeding plate coaxially arranged with the filter cartridge and a first driving mechanism for driving the feeding plate to move downward so that the crystals in the filter cartridge are discharged from the discharge port.

[0006] As a further improvement of this utility model, a cover is detachably installed on the top of the housing, the first driving mechanism is disposed on the cover, and its driving end passes through the cover and is connected to the pusher plate. The filter cylinder is a cylindrical structure, and multiple guide rods are arranged in a ring around its axial direction on the inner peripheral wall of the filter cylinder. The multiple guide rods extend upward along the axial direction and approach the cover. The pusher plate has a notch on its circumference that slides with multiple guide rods, and the outer circumferential wall of the pusher plate is slidably connected to the inner circumferential wall of the filter cartridge.

[0007] As a further improvement of this utility model, end caps are respectively provided at both ends of the filter cartridge along the axial direction. Connecting parts are radially protruding on the inner wall of the housing corresponding to the two end caps, and the two connecting parts are respectively located near the lower part of the water inlet and the water outlet. The two end caps are respectively connected to the corresponding connecting parts to form the gap.

[0008] As a further improvement of this utility model, the opening and closing component includes a valve seat, a valve plate, and a second driving mechanism. The valve seat is connected to the bottom of the housing, and the discharge port is opened on the valve seat and coaxially communicated with the filter cartridge. The valve plate is inserted into the valve seat and has a through channel adapted to the discharge port. The driving end of the second driving mechanism is connected to the valve plate and is used to drive the valve plate to move laterally, so that the through channel communicates with the discharge port to open the discharge port, or to make the through channel offset from the discharge port to close the discharge port.

[0009] As a further improvement of this utility model, the valve seat includes a cylindrical part connected to the housing and an insertion part with a rectangular structure located below the cylindrical part. The insertion part has a cavity opened laterally for the valve plate to pass through. First sealing rings are symmetrically arranged on the upper and lower inner walls of the cavity. The two first sealing rings are arranged around the material discharge port and seal against the upper and lower surfaces of the valve plate.

[0010] As a further improvement of this utility model, two sets of guide support plates are symmetrically arranged on the upper and lower inner walls of the cavity. Each set of guide support plates is configured as two, and the two guide support plates are mirror-symmetrically arranged on both sides of the first sealing ring along the moving direction of the valve plate. The guide support plate is arranged radially outward from the material discharge port and inclined towards the valve plate from the inner wall surface of the cavity.

[0011] As a further improvement of this utility model, second sealing rings are symmetrically arranged on the upper and lower inner walls of the cavity. The two second sealing rings are rectangular in structure and are respectively wrapped around the outside of the guide support plate, sealingly abutting against the upper and lower surfaces of the valve plate.

[0012] As a further improvement of this utility model, the filter cartridge is made of 80 to 100 mesh stainless steel filter screen.

[0013] The beneficial effects of this utility model are: the concentrated wastewater filter consumes virtually no energy, thus optimizing the cost of wastewater treatment; the filter assembly achieves efficient filtration of concentrated wastewater; in addition, the automatic discharge of crystals is achieved through the cooperation of the pusher assembly and the valve assembly, making the overall operation convenient, easy to maintain and manage. Attached Figure Description

[0014] Figure 1 This is a perspective view of the filter of this utility model; Figure 2 This is a perspective view of the visible internal features of the filter of this utility model; Figure 3 This utility model Figure 2 A cross-sectional view along the AA direction; Figure 4 This is a perspective view showing the visible internal features of the insertion part of this utility model.

[0015] Referring to the accompanying drawings, the following explanations are provided: 1. Filter assembly; 11. Housing; 111. Inlet; 112. Outlet; 113. Connecting part; 12. Filter cartridge; 121. Guide rod; 122. End cap; 13. Gap; 14. Cover body; 2. Valve assembly; 21. Material discharge port; 22. Opening and closing element; 221. Valve seat; 2211. Cylindrical part; 2212. Insertion part; 2213. Cavity; 2214. First sealing ring; 2215. Guide support plate; 2216. Second sealing ring; 222. Valve plate; 2221. Through channel; 223. Second drive mechanism; 3. Pushing assembly; 31. Pushing plate; 311. Notch; 32. First drive mechanism. Detailed Implementation

[0016] The preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] This utility model provides a concentrated wastewater filter, the inlet of which is connected to the outlet of a low-temperature wastewater concentration tank. It is used to separate solids and liquids in wastewater containing crystals after it has been concentrated in a low-temperature wastewater evaporation tank, thereby solving the problems of high energy consumption and heavy noise pollution of existing centrifuges.

[0018] See appendix Figure 1 To be continued Figure 4The concentrated wastewater filter includes a filter assembly 1, a valve assembly 2, and a feed assembly 3. These components work together to achieve the filtration of concentrated wastewater and the automatic discharge of crystals. The filter assembly 1 includes a housing 11 and a filter cartridge 12 arranged coaxially. The housing 11 is a cylindrical structure with openings at the top and bottom. The filter cartridge 12 is located inside the housing 11, and a gap 13 is provided between the outer wall of the filter cartridge 12 and the inner wall of the housing 11. The upper and lower ends of the perimeter of the housing 11 are respectively provided with an inlet 111 and an outlet 112. Concentrated wastewater flows out from the outlet of the wastewater low-temperature concentration tank, enters the filter cartridge 12 through the inlet 111, and is filtered, so that crystals in the wastewater are trapped inside the filter cartridge 12. The filtered liquid is discharged through the outlet 112, thereby achieving solid-liquid separation. The valve assembly 2 is located at the bottom of the filter assembly 1. The valve assembly 2 includes a feed inlet 21 communicating with the filter cartridge 12 and an opening / closing element 22 for opening and closing the feed inlet 21. The feeding assembly 3 is located at the top of the filter assembly 1, and includes a feeding plate 31 coaxially arranged with the filter cartridge 12, and a first drive mechanism 32 for driving the feeding plate 31 downward to discharge the crystals in the filter cartridge 12 from the discharge port 21, so as to automatically complete the crystal cleaning work in the filter cartridge during the filtration process. Compared with a centrifuge, this filter does not require a large amount of electrical energy to maintain high-speed rotation, thereby reducing energy consumption and saving wastewater treatment costs; the filter assembly achieves efficient filtration of concentrated wastewater, effectively separating crystals in the wastewater and ensuring filtration effect; in addition, the automatic discharge of crystals is achieved through the cooperation of the feeding assembly and the valve assembly, making the overall operation convenient and easy to maintain and manage.

[0019] Furthermore, a cover 14 is detachably mounted on the top of the housing 11. The first driving mechanism 32 is disposed on the cover 14, and its driving end passes through the cover 14 and connects to the pusher plate 31. The filter cylinder 12 is a cylindrical structure made of 80 to 100 mesh stainless steel filter screen. Multiple guide rods 121 are arranged in a ring around the inner circumferential wall of the filter cylinder 12, and the multiple guide rods 121 extend upward along the axial direction close to the cover 14. The pusher plate 31 has notches 311 on its circumference that slide with the multiple guide rods 121, while the outer circumferential wall of the pusher plate 31 is slidably connected to the inner circumferential wall of the filter cylinder 12. The pusher plate 31 is limited by the multiple guide rods 121 to ensure the stability of the pusher plate during movement.

[0020] Furthermore, end caps 122 are respectively provided at both ends of the filter cartridge 12 along the axial direction. Connecting portions 113 are radially protruding on the inner wall of the housing 11 corresponding to the two end caps 122. The two connecting portions 113 are respectively located near the bottom of the inlet 111 and the outlet 112. The two end caps 122 are respectively connected to the corresponding connecting portions 113 to form the gap 13. This gap facilitates the flow of concentrated wastewater between the housing and the filter cartridge, ensuring smooth filtration. At the same time, the end caps 122 and the connecting portions 113 facilitate the replacement and cleaning of the filter cartridge 12.

[0021] Furthermore, the opening and closing component 22 includes a valve seat 221, a valve plate 222, and a second driving mechanism 223. The valve seat 221 is connected to the bottom of the housing 11, and the discharge port 21 is opened on the valve seat 221 and coaxially communicates with the filter cartridge 12. The valve plate 222 is inserted into the valve seat 221 and has a through channel 2221 adapted to the discharge port 21. The driving end of the second driving mechanism 223 is connected to the valve plate 222 and is used to drive the valve plate 222 to move laterally, so that the through channel 2221 communicates with the discharge port 21 to open the discharge port 21, or so that the through channel 2221 is offset from the discharge port 21 to close the discharge port 21, thereby realizing the automatic opening and closing of the discharge port.

[0022] Furthermore, the valve seat 221 includes a cylindrical portion 2211 connected to the housing 11 and a rectangular insertion portion 2212 located below the cylindrical portion 2211. The insertion portion 2212 has a cavity 2213 opened laterally for the valve plate 222 to pass through. The upper and lower inner walls of the cavity 2213 are symmetrically provided with first sealing rings 2214. The two first sealing rings 2214 are arranged around the material outlet and seal against the upper and lower surfaces of the valve plate 222 to form a seal around the material outlet, preventing liquid, crystals, etc. from leaking into the cavity 2213 during the movement of the valve plate 222 and affecting the sealing effect of the material outlet.

[0023] Furthermore, two sets of guide support plates 2215 are symmetrically arranged on the upper and lower inner walls of the cavity 2213. Each set of guide support plates 2215 consists of two plates, which are mirror-symmetrically arranged on both sides of the first sealing ring 2214 along the moving direction of the valve plate 222. The guide support plates 2215 are inclined outward from the radial direction of the discharge port 21, from the inner wall of the cavity 2213 toward the valve plate 222. The inclined guide support plates 2215 reduce the friction force when the valve plate moves and support the valve plate to ensure the stability of the lateral movement of the valve plate.

[0024] Furthermore, the upper and lower inner walls of the cavity 2213 are symmetrically provided with second sealing rings 2216. The two second sealing rings 2216 are rectangular in structure and are respectively wrapped around the guide support plate 2215, sealingly abutting against the upper and lower surfaces of the valve plate 222 to form a double seal and ensure the sealing effect.

[0025] It should be noted that all parts of this utility model that come into contact with wastewater are made of stainless steel to extend the service life of the filter and reduce the cost of equipment maintenance and replacement.

[0026] Based on the above, the working process of the concentrated wastewater filter is as follows: The inlet of the concentrated wastewater filter is connected to the outlet of the evaporation and concentration tank. When the filter starts working, the concentrated wastewater enters the filter cartridge from the inlet. Under the action of the filter cartridge, the liquid passes through the filter cartridge into the gap and then exits from the outlet. At this time, crystals are trapped inside the filter cartridge.

[0027] When a certain amount of crystals accumulates in the filter cartridge (determined by the pressure at the inlet) and needs to be discharged, the second drive mechanism drives the valve plate to move laterally, so that the through channel on the valve plate connects with the discharge port, opening the discharge port.

[0028] Next, the first drive mechanism drives the pusher plate to move downwards along the guide rod inside the filter cylinder. The pusher plate pushes the crystals inside the filter cylinder out of the discharge port, completing the crystal discharge operation. After the crystals are discharged, the valve plate and pusher plate reset, closing the discharge port, and the filtration of concentrated wastewater continues.

[0029] It should be noted that when the amount of crystals in the filter cartridge reaches a certain level, the filtration resistance increases, making it difficult for wastewater to flow smoothly through the filter cartridge. This leads to an increase in the pressure at the inlet, indicating that a solids removal process is needed to restore the normal filtration performance of the filter.

[0030] In summary, the concentrated wastewater filter provided by this utility model has virtually no energy consumption, thus optimizing the cost of wastewater treatment; it achieves efficient filtration of concentrated wastewater through the filtration components; furthermore, the automatic discharge of crystals is achieved through the cooperation of the pusher component and the valve component, making the overall operation convenient, easy to maintain and manage.

[0031] The above description sets forth many specific details to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A concentrated wastewater filter, characterized in that: The system includes a filter assembly (1), a valve assembly (2), and a feed assembly (3). The filter assembly (1) includes a housing (11) with openings at the top and bottom and a filter cartridge (12) disposed inside the housing (11). The upper and lower ends of the peripheral wall of the housing (11) are respectively provided with an inlet (111) and an outlet (112). A gap (13) is provided between the outer wall of the filter cartridge (12) and the inner wall of the housing (11). Concentrated wastewater enters the filter cartridge (12) through the inlet (111) to be filtered and is discharged through the outlet (112). The valve assembly (2) is located at the bottom of the filter assembly (1) and includes a discharge port (21) communicating with the filter cartridge (12) and an opening and closing member (22) for opening and closing the discharge port (21). The feeding assembly (3) is located on the top of the filter assembly (1) and includes a feeding plate (31) coaxially arranged with the filter cartridge (12) and a first driving mechanism (32) for driving the feeding plate (31) to move down so that the crystals in the filter cartridge (12) are discharged from the discharge port (21).

2. The concentrated wastewater filter according to claim 1, characterized in that: The top of the housing (11) is detachably fitted with a cover (14). The first drive mechanism (32) is located on the cover (14), and its drive end passes through the cover (14) and is connected to the pusher plate (31). The filter cylinder (12) is a cylindrical structure. The inner circumferential wall of the filter cylinder (12) is arranged in a ring around its axis with multiple guide rods (121). The multiple guide rods (121) extend upward along the axis and approach the cover (14). The pusher plate (31) has a notch (311) in the circumferential direction that slides with a plurality of guide rods (121), and the outer peripheral wall of the pusher plate (31) is slidably connected to the inner peripheral wall of the filter cartridge (12).

3. The concentrated wastewater filter according to claim 2, characterized in that: The filter cartridge (12) is provided with end caps (122) at both ends in the axial direction. The inner wall of the housing (11) is provided with connecting parts (113) in the radial direction corresponding to the two end caps (122). The two connecting parts (113) are respectively located near the bottom of the inlet (111) and the outlet (112). The two end caps (122) are respectively connected to the corresponding connecting parts (113) to form the gap (13).

4. The concentrated wastewater filter according to claim 3, characterized in that: The opening and closing component (22) includes a valve seat (221), a valve plate (222), and a second driving mechanism (223). The valve seat (221) is connected to the bottom of the housing (11). The discharge port (21) is opened on the valve seat (221) and coaxially connected to the filter cartridge (12). The valve plate (222) is inserted into the valve seat (221) and has a through channel (2221) adapted to the discharge port (21). The driving end of the second driving mechanism (223) is connected to the valve plate (222) and is used to drive the valve plate (222) to move laterally, so that the through channel (2221) is connected to the discharge port (21) to open the discharge port (21), or to make the through channel (2221) offset from the discharge port (21) to close the discharge port (21).

5. The concentrated wastewater filter according to claim 4, characterized in that: The valve seat (221) includes a cylindrical part (2211) connected to the housing (11) and a rectangular insertion part (2212) located below the cylindrical part (2211). The insertion part (2212) has a cavity (2213) opened laterally for the valve plate (222) to pass through. The upper and lower inner walls of the cavity (2213) are symmetrically provided with first sealing rings (2214). The two first sealing rings (2214) are arranged around the material discharge port and seal against the upper and lower surfaces of the valve plate (222).

6. The concentrated wastewater filter according to claim 5, characterized in that: Two sets of guide support plates (2215) are symmetrically arranged on the upper and lower inner walls of the cavity (2213). Each set of guide support plates (2215) consists of two plates, and the two guide support plates (2215) are mirror-symmetrically arranged on both sides of the first sealing ring (2214) along the moving direction of the valve plate (222). The guide support plate (2215) is arranged radially outward from the discharge port (21) and inclined toward the valve plate (222) from the inner wall surface of the cavity (2213).

7. The concentrated wastewater filter according to claim 6, characterized in that: The upper and lower inner walls of the cavity (2213) are symmetrically provided with second sealing rings (2216). The two second sealing rings (2216) are rectangular in structure and are respectively wrapped around the outside of the guide support plate (2215) to seal against the upper and lower surfaces of the valve plate (222).

8. The concentrated wastewater filter according to claim 1, characterized in that: The filter cartridge (12) is made of 80 to 100 mesh stainless steel filter screen.

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