Laminated filter

Abstract

The utility model relates to a lamination filter which comprises a tank body, and lamination assemblies and a core cylinder which are arranged in the tank body, a plurality of lamination assemblies are sleeved and stacked on the outer wall of the core cylinder, each lamination assembly comprises a first lamination and a second lamination which are buckled together, the first lamination comprises a first reed and a disc which are coaxially compounded together, and the second lamination comprises a second reed and a disc which are coaxially compounded together. The second lamination comprises a second reed and a disc which are coaxially compounded together; the lower end of the tank body is provided with a base, the base is provided with a water outlet and a water inlet, the lower end of the inner wall of the base is provided with an annular column, and the bottom end of the tray penetrates through the annular column to be communicated with the water outlet; a pressing assembly is coaxially arranged at the top of the tank body and can press the stacked lamination assemblies. According to the utility model, the side surfaces of the laminations can be cleaned, and impurities accumulated on the surfaces of the laminations can be washed away through the gaps. Therefore, manual disassembly and washing are not needed, and the working efficiency of the filter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, in particular to a stack filter. Background Art

[0002] The stack filter is a relatively common secondary filtering and deep filtering device, which has a stronger ability to retain impurities than a mesh filter and requires relatively few flushing times. It is formed by overlapping a large number of very thin circular stacks and locking them to form a cylindrical filter element. When the stack filter is working normally, the stacks are locked. When manual flushing is required, the filter element can be removed and the compression nut can be loosened, and then flushed with water. However, such an operation is troublesome and requires disassembling the housing. For another example, the patent publication number: CN212914735U discloses a stack filter for a drip irrigation fertilization device, which includes a housing. A slider is slidably connected to the inner wall of the chute. The lower surface of the slider is hinged to a first support rod through a hinge seat. One end of the first support rod is hinged to a cleaning plate through a hinge seat. One side surface of the cleaning plate is hinged to a second support rod through a hinge seat. One end of the second support rod is hinged to the inner wall of the housing. A cross plate is fixedly connected between the inner walls of the housing. Two hydraulic rods are symmetrically and fixedly installed on the lower surface of the cross plate. One end of the hydraulic rod is fixedly connected to the upper surface of the slider. The slider drives the cleaning plate to approach the stacks on the circumferential side surface of the filter element cylinder through the first support rod. At the same time, the motor drives the filter element cylinder to rotate, so that the brush on the side surface of the cleaning plate can clean the filter residues on the stacks on the circumferential side surface of the filter element cylinder. However, this can only facilitate the cleaning of the filter residues on the circumferential side surface of the filter element cylinder, and the impurities remaining in the stacks are not easy to clean. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a stack filter, which has a simple structure and is convenient for self-cleaning.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A stack filter of the utility model includes a tank body, a stack assembly and a core cylinder arranged in the tank body. A plurality of the stack assemblies are sleeved and stacked on the outer wall of the core cylinder. The stack assembly includes a first stack and a second stack buckled together. The first stack includes a first reed piece and a disc coaxially compounded together. The second stack includes a second reed piece and a disc coaxially compounded together. A tray is arranged at the lower end of the core cylinder. An annular groove is arranged on the upper end surface of the tray. The stack assembly is placed in the annular groove. A base is arranged at the lower end of the tank body. The base is provided with a water outlet and a water inlet. An annular column is arranged at the lower end of the inner wall of the base. The bottom end of the tray passes through the annular column and communicates with the water outlet. A pressing assembly is coaxially arranged at the top of the tank body. The pressing assembly can press the stacked stack assemblies.

[0006] Preferably, the pressing assembly includes a cylinder cover, a pressing block, a lead screw, a lead screw nut and a servo motor. The cylinder cover is arranged at the top end of the core cylinder. The pressing block presses on the top-layer laminated sheet assembly. The top surface of the pressing block is fixedly connected to the lead screw nut. The lead screw nut is threadedly connected to the lead screw. The upper end of the lead screw passes through the pressing block and is connected to the servo motor through a coupling. The servo motor is fixed on the top surface of the tank body through a bracket.

[0007] Preferably, the first reed is internally provided with bending feet. There are four bending feet, which are evenly distributed on the inner side. The angle of the bending feet is 30°. The material of the first reed is cold-rolled stainless steel sheet, which is not easily deformed during pressing and can make the first laminated sheet and the second laminated sheet bounce off under the action of no external force.

[0008] Preferably, the second reed is internally provided with parallel feet. There are four parallel feet, which are evenly distributed on the inner side. The material of the second reed is cold-rolled stainless steel sheet; the parallel feet are arranged corresponding to the bending feet.

[0009] Preferably, the core cylinder is a hollow cylinder. The outer wall of the core cylinder is provided with guide grooves. There are four guide grooves, which are evenly distributed on the outer wall. The bending feet and the parallel feet are installed in the guide grooves. The space between the guide grooves is a hollow structure, and a filter membrane is installed. The guide grooves facilitate the installation of the first laminated sheet and the second laminated sheet.

[0010] Preferably, the cylinder cover and the core cylinder are fixedly connected as a whole. The inner side of the tray and the core cylinder are fixedly connected as a whole.

[0011] Preferably, the lead screw nut is slidably connected to the tank body, and the outer wall of the lead screw nut is hermetically arranged with the hole of the tank body.

[0012] Preferably, the pressing block is vertically and slidably connected to the inner step surface of the tank body, and the pressing block is hermetically arranged with the inner step surface of the tank body.

[0013] Preferably, the core cylinder is a hollow shaft cylinder, and the middle of the tray is a hollow shaft cylinder. The core cylinder, the tray and the water outlet are communicated, and the core cylinder, the tray and the water outlet are kept on the same axis.

[0014] Preferably, the filter membrane is composed of a double-layer composite polytetrafluoroethylene microporous membrane layer, which can prevent impurities from entering the core cylinder.

[0015] Compared with the prior art, the beneficial technical effects of the present utility model are as follows: Since the stack plate assembly is divided into two types, one with pin bending and the other flat, and the two types of stack plates are stacked alternately. During flushing, the pressure at the upper end of the stack plate assembly is released and rotated in the reverse direction. The first stack plate will bounce upward, separating the first stack plate and the second stack plate, and thus being thoroughly cleaned. In this way, manual disassembly and cleaning are not required, and clean filtered water can always be provided during the process of cleaning the filter, improving the working efficiency of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a front view structural schematic diagram of the stack plate filter of the present utility model;

[0018] Figure 2 It is a front view sectional structural schematic diagram of the stack plate filter of the present utility model in the water inlet state;

[0019] Figure 3 It is a front view sectional structural schematic diagram of the stack plate filter of the present utility model in the backwashing state;

[0020] Figure 4 It is a structural schematic diagram of the installation of the core cylinder, tray and cylinder cover of the stack plate filter of the present utility model;

[0021] Figure 5 It is a schematic diagram of the type and installation of the stack plate assembly in the stack plate filter of the present utility model.

[0022] Description of the reference numerals: 1. Stack plate assembly; 101. First stack plate; 1011. Disc; 1012. First spring piece; 1013. Bent foot; 102. Second stack plate; 1021. Second spring piece; 1022. Parallel foot; 2. Core cylinder; 201. Guide groove; 202. Filter membrane; 3. Tray; 4. Cylinder cover; 5. Pressing block; 6. Lead screw; 7. Nut; 8. Servo motor; 9. Tank body; 10. Base; 11. Water inlet; 12. Water outlet; 13. Annular column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The core of the present utility model is to provide a stack plate filter with a simple structure and convenient self-cleaning.

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] Referring to the accompanying drawings, Figure 1 is a front view structural schematic diagram of the stack filter of the present utility model; Figure 2 is a front view sectional structural schematic diagram of the stack filter of the present utility model in the water inlet state; Figure 3 is a front view sectional structural schematic diagram of the stack filter of the present utility model in the backwashing state; Figure 4 is a structural schematic diagram of the installation of the core cylinder, tray and cylinder cover of the stack filter of the present utility model; Figure 5 is a schematic diagram of the type and installation of the stack assembly in the stack filter of the present utility model.

[0027] In a specific embodiment, as Figures 1 to 5 shown, a stack filter includes a tank body, a stack assembly and a core cylinder disposed in the tank body. A plurality of stack assemblies are sleeved and stacked on the outer wall of the core cylinder. The stack assembly 1 includes a first stack sheet 101 and a second stack sheet 102 buckled together. The first stack sheet 101 includes a first spring piece 1012 and a disc 1011 coaxially combined together. The second stack sheet 102 coaxially combined together includes a second spring piece 1021 and a disc 1011. A tray 3 is provided at the lower end of the core cylinder 2. An annular groove is provided on the upper end surface of the tray 3. The stack assembly 1 is placed in the annular groove. A base 10 is provided at the lower end of the tank body 9. The base 10 is provided with a water outlet 12 and a water inlet 11. An annular column 13 is provided at the lower end of the inner wall of the base 10. The bottom end of the tray 3 passes through the annular column 13 and communicates with the water outlet 12; A pressing assembly is coaxially provided at the top of the tank body 9, and the pressing assembly can press the stacked stack assemblies 1.

[0028] Specifically, as Figure 5 shown, the first spring piece 1012 is internally provided with bending feet 1013. There are four bending feet 1013, which are evenly distributed on the inner side. The angle of the bending feet 1013 is 30°. The second spring piece 1021 is internally provided with parallel feet 1022. There are four parallel feet 1022, which are evenly distributed on the inner side. The parallel feet 1022 and the second spring piece are in the same plane. The first spring piece 1012 and the second spring piece 1021 are made of cold-rolled stainless steel sheet. The parallel feet 1022 and the bending feet 1013 are arranged corresponding to each other.

[0029] In a specific embodiment, as Figures 1 to 3As shown in the figure, the pressing assembly includes a cylinder cover 4, a pressing block 5, a lead screw 6, a lead screw nut 7, and a servo motor 8. The cylinder cover 4 is arranged at the top end of the core cylinder 2. The pressing block 5 presses on the top-layer laminated sheet assembly 1. The top surface of the pressing block 5 is fixedly connected to the lead screw nut 7. The lead screw nut 7 is threadedly connected to the lead screw 6. The upper end of the lead screw 6 passes through the pressing block 5 and is connected to the servo motor 8 through a coupling. The servo motor 8 is fixed on the top surface of the tank body 9 through a bracket.

[0030] In a specific embodiment, as Figures 2 to 3 shown, the core cylinder 2 is a hollow cylinder. The outer wall of the core cylinder 2 is provided with guide grooves 201. There are four guide grooves 201, which are evenly distributed on the outer wall. The bending feet 1013 and the parallel feet 1022 are installed in the holes of the guide grooves 201. The space between the guide grooves 201 is a hollow structure, and a filter membrane 202 is installed.

[0031] In a specific embodiment, as Figures 1 to 3 shown, the cylinder cover 4 is fixedly connected to the core cylinder 2 as a whole, closing the upper end of the core cylinder, so that the water to be treated must pass through filtration to enter the inside of the core cylinder. The inner side of the tray 3 is fixedly connected to the core cylinder 2 as a whole. The core cylinder 2 is a hollow shaft cylinder, and the middle of the tray 3 is a hollow shaft cylinder. The core cylinder 2, the tray 3 and the water outlet 12 are communicated, and the core cylinder 2, the tray 3 and the water outlet 12 are kept on the same axis.

[0032] In a specific embodiment, as Figures 1 to 3 shown, the lead screw nut 7 is slidably connected to the tank body 9, and the outer wall of the lead screw nut 7 is hermetically arranged with the hole of the tank body 9.

[0033] In a specific embodiment, as Figures 1 to 3 shown, the pressing block 5 is vertically and slidably connected to the inner step surface of the tank body 9, and the pressing block 5 is hermetically installed on the inner step surface of the tank body 9 to prevent water from flowing out of the pressing plate.

[0034] In a specific embodiment, as Figures 1 to 3 shown, in a specific embodiment, as Figure 4 shown, the filter membrane 202 is composed of a double-layer composite polytetrafluoroethylene microporous membrane layer. The membrane has a small pore size, about 0.2 - 0.5 μm, is evenly distributed, and has a large porosity, and can filter dust particles.

[0035] The utility model laminated filter: when the laminated filter is working, the water to be treated enters the tank body 9 through the water inlet 11, is filtered by the laminated assembly 1 and the filter membrane 202, penetrates into the core barrel 2, and is discharged from the water outlet 12. At this time, the laminated assembly 1 is placed tightly under the pressure of the pressure plate 5. The water is well filtered and the filtration purity is improved. If there are many impurities on the laminated sheets and the filter membrane 202, which block the laminated sheets, the backwashing function is started to make the treated water flow in from the water outlet 12, and the servo motor 8 drives the screw rod 6 to rotate in the opposite direction, so that the screw rod 6 nut 7 rotates upward and separates from the pressure plate 5, and the pressure plate 5 floats up with the water flow. One end of the screw rod 6 is fixed on the cylinder cover 4, and the screw rod 6 drives the cylinder cover 4 and the core barrel 2 and the tray 3 to rotate together. The bending foot in the first reed 1012, under the action of no pressure at the upper end, and under the action of the floating force of the water flow and the rotation of the core barrel 2, the first reed 1012 will bounce up. The first laminate 101 and the second laminate 102 are stacked alternately, so that a gap is formed between the two laminates, and the water flow will wash away the impurities accumulated on the surface of the laminate through the gap. The cleaned sewage is discharged through the water inlet 11. After cleaning, the servo motor 8 drives the screw 6 to rotate forward, so that the screw nut 7 rotates downward, slowly pressing the pressure plate, and the lower end of the pressure plate is placed on the laminate, so that the laminate assembly 1 is pressed. In this way, there is no need for manual disassembly and cleaning, and clean filtered water can always be provided during the cleaning process of the filter, thereby improving the working efficiency of the filter.

[0036] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0037] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A laminated filter, comprising a tank body (9), a laminated assembly (1) and a core barrel (2) arranged in the tank body (9), wherein a plurality of the laminated assemblies (1) are sleeved and stacked on the outer wall of the core barrel (2), characterized in that: The lamination assembly (1) comprises a first lamination (101) and a second lamination (102) which are buckled together, the first lamination (101) comprising a first spring sheet (1012) and a disk sheet (1011) which are coaxially combined together, and the second lamination (102) comprising a second spring sheet (1021) and a disk sheet (1011) which are coaxially combined together; a tray (3) is provided at the lower end of the core barrel (2), an annular groove is provided on the upper end surface of the tray (3), and the lamination assembly (1) is placed in the annular groove; a base (10) is provided at the lower end of the tank body (9), the base (10) is provided with a water outlet (12) and a water inlet (11), an annular column (13) is provided at the lower end of the inner wall of the base (10), and the bottom end of the tray (3) passes through the annular column (13) and is connected to the water outlet (12); a pressing assembly is coaxially provided at the top of the tank body (9), and the pressing assembly can press the stacked lamination assembly (1).

2. The laminated filter according to claim 1, characterized in that: The clamping assembly comprises a cylinder cover (4), a pressure block (5), a screw rod (6), a screw rod nut (7) and a servo motor (8); the cylinder cover (4) is arranged at the top end of the core cylinder (2); the pressure block (5) is pressed on the top layer of the lamination assembly (1); the top surface of the pressure block (5) is fixedly connected to the screw rod nut (7); the screw rod nut (7) is threadedly connected to the screw rod (6); the upper end of the screw rod (6) passes through the pressure block (5) and is connected to the servo motor (8) via a coupling; the servo motor (8) is fixed to the top surface of the tank body (9) via a bracket.

3. The laminated filter according to claim 1, characterized in that: The first spring sheet (1012) is provided with a bending foot (1013) inside. There are four bending feet (1013) evenly distributed on the inner side. The angle of the bending feet (1013) is 30°. The first spring sheet (1012) is made of a stainless steel cold-rolled plate.

4. The laminated filter according to claim 3, characterized in that: The second reed (1021) is provided with parallel legs (1022) inside, and there are four parallel legs (1022) evenly distributed on the inside, and the second reed (1021) is made of stainless steel cold-rolled plate; the parallel legs (1022) and the bending legs (1013) are arranged together in correspondence.

5. The laminated filter according to claim 4, characterized in that: The core barrel (2) is in the shape of a hollow cylinder. The outer wall of the core barrel (2) is provided with guide grooves (201). There are four guide grooves (201) evenly distributed on the outer wall. The bending legs (1013) and the parallel legs (1022) are installed in the guide grooves (201). There is a hollow structure between the guide grooves (201) on which a filter membrane (202) is installed.

6. The laminated filter according to claim 2, characterized in that: The cylinder cover (4) is fixedly connected to the core cylinder (2) as a whole, and the inner side of the tray (3) is fixedly connected to the core cylinder (2) as a whole.

7. The laminated filter according to claim 2, characterized in that: The screw nut (7) is slidably connected to the tank body (9), and the outer wall of the screw nut (7) is sealed with the hole of the tank body (9).

8. The laminated filter according to claim 2, characterized in that: The pressing block (5) is vertically guided and slidably connected to the inner step surface of the tank body (9), and the pressing block (5) and the inner step surface of the tank body (9) are sealed.

9. The laminated filter according to claim 1, characterized in that: The core barrel (2) is a hollow shaft barrel, the middle of the tray (3) is a hollow shaft barrel, the core barrel (2), the tray (3) and the water outlet (12) are connected, and the core barrel (2), the tray (3) and the water outlet (12) maintain consistent axes.

10. The laminated filter according to claim 5, characterized in that: The filter membrane (202) is composed of a double-layer laminated polytetrafluoroethylene microporous membrane layer.

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