Fluid filtering and purifying device

Abstract

The utility model discloses a fluid filtering and purifying device which comprises a flow channel cavity body, the upper end of the flow channel cavity body is connected with a housing, the side wall of the flow channel cavity body is provided with a differential pressure type sensor and a proximity switch, the lower end of the flow channel cavity body is provided with a pneumatic actuator, and the side wall of the flow channel cavity body is connected with a pneumatic coaxial valve. A transmission shaft is installed in an inner cavity of the flow channel cavity body, the lower portion of the transmission shaft is connected with a pneumatic actuator, positioning blocks rotating synchronously are arranged on the side wall of the transmission shaft, a filter drum base is arranged above the transmission shaft, and a plurality of tapered wedge-shaped filter drums are installed on the filter drum base. The pressure difference between the liquid purifying cavity and the drain outlet is formed, after a plurality of polluted filter cartridges are sequentially cleaned, next filtering circulation is carried out, and the internal structure of the device can be quickly disassembled and replaced while the filtering effect is ensured, so that the stability of the overall operation efficiency of the device is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field related to metal cutting and filtering, and in particular to a fluid filtering and purifying device. Background Art

[0002] As the country's environmental protection requirements for industrial production become increasingly higher, the filtration industry is particularly important. Filters are used in the process of purifying liquids. After a period of use, certain impurities will accumulate in the filter element, resulting in reduced filtration capacity. Generally, the filter element is directly replaced, but this is time-consuming and labor-intensive. Automatic backwashing filtration is now mostly used. A drain valve is installed at the bottom of the filter element. When the filtration effect is reduced to a certain level, the drain valve will be opened to backwash and drain the sewage to achieve the purpose of automatically cleaning the filter element; however, the existing automatic backwashing filters usually have two disadvantages when used: 1. The backwashing effect is not obvious and the sewage is not completely discharged; 2. The structural design is relatively complex, and processing and assembly are relatively difficult.

[0003] Therefore, we propose a fluid filtering and purification device to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a fluid filtering and purifying device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fluid filtering and purification device comprises a flow channel cavity body, the upper end of which is connected to a cover shell, a pressure difference sensor and a proximity switch are installed on the side wall of the flow channel cavity body, a pneumatic actuator is installed on the lower end of the flow channel cavity body, a pneumatic coaxial valve is connected to the side wall of the flow channel cavity body, a transmission shaft is installed in the inner cavity of the flow channel cavity body, a pneumatic actuator is connected below the transmission shaft, a synchronously rotating positioning block is provided on the side wall of the transmission shaft, a filter cartridge seat is provided above the transmission shaft, and a plurality of conical wedge-shaped filter cartridges are installed on the filter cartridge seat.

[0007] Preferably, a sewage inlet is formed on one side of the flow channel cavity body, and a sewage outlet is formed on the other side corresponding to the position of the inlet, and the pneumatic coaxial valve is installed outside the sewage outlet.

[0008] Preferably, a clean liquid outlet is provided on a flattened side of the lower end of the cover shell, a sealing groove for installing a sealing ring is provided on the lower end surface of the cover shell, and an exhaust port is provided on the upper end surface of the cover shell.

[0009] Preferably, a group of mounting holes is opened on the side wall of the flow channel cavity body, and the group of mounting holes is used to install the differential pressure sensor and the proximity switch. The flow channel hole is opened on the side wall of the flow channel cavity body corresponding to the position of the differential pressure sensor.

[0010] Preferably, a rectangular window with two sides passing through is opened on the side wall of the flow channel cavity body, and the rectangular window corresponds to the position of the transmission shaft and the positioning block.

[0011] Preferably, a slotted nut is provided at the connection between the transmission shaft and the positioning block, and a fixing bolt is provided on the side wall of the slotted nut.

[0012] Preferably, the taper of the filter cartridge is 2 degrees, and a sealing groove for installing a sealing ring is provided on the lower end surface of the filter cartridge.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a plurality of cone-shaped filter cartridges are installed on the filter cartridge seat, and the filter cartridge as a whole is the filter cartridge seat, and the filter cartridge divides the space formed by the flow channel cavity body and the cover shell into a dirty liquid cavity and a clean liquid cavity, thereby diverting the separated clean liquid and dirty liquid, so as to facilitate the subsequent outflow for treatment, and filters the dirty liquid at the same time through the plurality of filter cartridges. When the dirty liquid blocks the filter cartridge and the plurality of filter cartridges are blocked, the pressure difference in the clean and dirty liquid cavity increases, triggering the pressure difference switch to send a signal, and the pneumatic actuator drives the transmission shaft to rotate, and then the contaminated filter cartridge is rotated to the sewage outlet in turn, and the rotation position is determined by the positioning sensor, and the pneumatic coaxial valve is opened at the same time, and a pressure difference between the clean liquid cavity and the sewage outlet is formed. The clean liquid flows from the contaminated filter cartridge gap to the sewage outlet due to the pressure difference force, and the discharge time is about 2 seconds. When the plurality of contaminated filter cartridges are cleaned in turn, the next filtering cycle is entered, and while ensuring the filtering effect, the internal structure of the device can be quickly disassembled and replaced, thereby ensuring the stability of the overall operating efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the flow channel cavity body and the cover shell of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the transmission shaft and filter cartridge of the utility model;

[0019] Figure 5 This is a schematic diagram of the inner cavity structure of the flow channel cavity of the utility model.

[0020] In the figure: 1-flow channel cavity body, 101-liquid inlet, 102-drain outlet, 2-cover, 3-differential pressure sensor, 301-mounting hole, 302-flow channel hole, 4-proximity switch, 5-pneumatic actuator, 6-pneumatic coaxial valve, 7-drive shaft, 701-rectangular window, 8-positioning block, 9-filter cartridge seat, 10-filter cartridge, 11-slotted nut, 12-fastening bolt. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-5A fluid filtering and purification device comprises a flow channel cavity body 1, a sewage liquid inlet 101 is provided on one side of the flow channel cavity body 1, a liquid inlet groove is provided in communication with the liquid inlet 101, a step hole is provided above the liquid inlet groove for installing a filter cartridge seat 9, and a sewage outlet 102 is provided on the other side corresponding to the position of the liquid inlet 101, a pneumatic coaxial valve 6 is installed on the outside of the sewage outlet 102, a cover shell 2 is connected to the upper end of the flow channel cavity body 1, a 1.5MM step outer circle is designed above the flow channel cavity body 1, which is used to connect the positioning of the cover shell 2, a clean liquid outlet 201 is provided on one side of the milling flat of the lower end of the cover shell 2, a sealing groove for installing a sealing ring is provided on the lower end surface of the cover shell 2, an exhaust port 202 is provided on the upper end surface of the cover shell 2, and a G1 / 2 screw plug is installed on the exhaust port 202.

[0026] A differential pressure sensor 3 and a proximity switch 4 are installed on the side wall of the flow channel cavity body 1 for detecting the rotation angle of the positioning block 8. A group of mounting holes 301 are opened on the side wall of the flow channel cavity body 1. A group of mounting holes 301 are used to install the differential pressure sensor 3 and the proximity switch 4. The threaded hole model for installing the proximity switch 4 is M12X1. A flow channel hole 302 is opened on the side wall of the flow channel cavity body 1 corresponding to the position of the differential pressure sensor 3. There are two flow channel holes 302, which correspond to the positions of the isolated dirty liquid cavity and the clean liquid cavity respectively.

[0027] A pneumatic actuator 5 is installed at the lower end of the flow channel cavity body 1, a pneumatic coaxial valve 6 is connected to the side wall of the flow channel cavity body 1, a transmission shaft 7 is installed in the inner cavity of the flow channel cavity body 1, the pneumatic actuator 5 is connected below the transmission shaft, and the filter cartridge seat 9 is connected above the transmission shaft. A rectangular window 701 with two sides passing through is opened on the side wall of the flow channel cavity body 1, and the rectangular window 701 corresponds to the position of the transmission shaft 7 and the positioning block 8. A φ100 outer cylinder is designed below the flow channel cavity body 1, and the rectangular window 701 is opened on the outer cylinder, which is used to lock the slotted nut 11 of the transmission shaft 7 and observe the rotation position of the positioning block 8 during debugging.

[0028] The transmission shaft 7 is connected to the pneumatic actuator 5 below, and a synchronously rotating positioning block 8 is provided on the side wall of the transmission shaft 7. A slotted nut 11 is provided at the connection between the transmission shaft 7 and the positioning block 8, and a fixing bolt 12 is provided on the side wall of the slotted nut 11. The fixing bolt 12 is a hexagonal type and has a cylindrical front end.

[0029] A filter cartridge seat 9 is arranged above the transmission shaft 7, and a plurality of conical wedge-shaped filter cartridges 10 are installed on the filter cartridge seat 9. The filter cartridge seat 9 and the filter cartridge 10 separate the space formed by the flow channel cavity body 1 and the cover shell 2 into a dirty liquid cavity and a clean liquid cavity. The taper of the large and small heads of the filter cartridge 10 is 2 degrees, and a sealing groove for installing a sealing ring is opened on the lower end surface of the filter cartridge 10.

[0030] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0031] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

Claims

1. A fluid filtering and purification device, comprising a flow channel cavity body (1), characterized in that: The upper end of the flow channel cavity body (1) is connected to a cover shell (2); a differential pressure sensor (3) and a proximity switch (4) are installed on the side wall of the flow channel cavity body (1); a pneumatic actuator (5) is installed on the lower end of the flow channel cavity body (1); a pneumatic coaxial valve (6) is connected to the side wall of the flow channel cavity body (1); a transmission shaft (7) is installed in the inner cavity of the flow channel cavity body (1); the pneumatic actuator (5) is connected below the transmission shaft (7); a synchronously rotating positioning block (8) is provided on the side wall of the transmission shaft (7); a filter cartridge seat (9) is provided above the transmission shaft (7); and a plurality of conical wedge-shaped filter cartridges (10) are installed on the filter cartridge seat (9).

2. A fluid filtering and purifying device according to claim 1, characterized in that: A sewage inlet (101) is provided on one side of the flow channel cavity body (1), and a sewage outlet (102) is provided on the other side corresponding to the position of the inlet (101), and the pneumatic coaxial valve (6) is installed outside the sewage outlet (102).

3. A fluid filtering and purifying device according to claim 1, characterized in that: A clean liquid outlet (201) is provided on a flattened side of the lower end of the cover shell (2), a sealing groove for installing a sealing ring is provided on the lower end surface of the cover shell (2), and an exhaust port (202) is provided on the upper end surface of the cover shell (2).

4. A fluid filtering and purifying device according to claim 1, characterized in that: A group of mounting holes (301) are provided on the side wall of the flow channel cavity body (1), and the group of mounting holes (301) are used to install a differential pressure sensor (3) and a proximity switch (4). A flow channel hole (302) is provided on the side wall of the flow channel cavity body (1) corresponding to the position of the differential pressure sensor (3).

5. A fluid filtering and purifying device according to claim 1, characterized in that: A rectangular window (701) with two sides passing through is provided on the side wall of the flow channel cavity body (1); the rectangular window (701) corresponds to the position of the transmission shaft (7) and the positioning block (8).

6. A fluid filtering and purifying device according to claim 1, characterized in that: A slotted nut (11) is provided at the connection between the transmission shaft (7) and the positioning block (8), and a fixing bolt (12) is provided on the side wall of the slotted nut (11).

7. A fluid filtering and purifying device according to claim 1, characterized in that: The taper of the filter cartridge (10) is 2 degrees, and a sealing groove for installing a sealing ring is provided on the lower end surface of the filter cartridge (10).

Images