Diatomite filtering device with backwashing function

Abstract

The utility model relates to a diatomite filtering device, in particular to a diatomite filtering device with a backwashing function. Comprising a tank body, and a filter disc and a water distributor are sequentially arranged in the tank body from top to bottom; the filter disc is rotatably mounted on the inner wall of the tank body, a filter stick located below the filter disc is arranged at a liquid passing hole of the filter disc, and a diatomite filter membrane is attached to the outer side of the filter stick; the water distributor is fixedly mounted on the inner wall of the tank body, and a liquid inlet and a liquid outlet of the water distributor are respectively connected with a liquid inlet pipe orifice and a liquid outlet pipe orifice of the tank body; a motor is arranged at the top of the tank, a rotating shaft is arranged at the end of an output shaft of the motor, and one end of the rotating shaft extends into the tank to be connected with the filter disc. According to the utility model, the motor is arranged and is used for driving the filter disc to rotate, so that the filter stick arranged at the liquid passing hole of the filter disc swings back and forth in the tank body, the washing effect on a diatomite filter membrane attached to the surface of the filter stick is enhanced, and the continuous and efficient filtering capacity of the filter stick is favorably maintained.

Description

Technical Field

[0001] This utility model relates to diatomaceous earth filtration devices, specifically to a diatomaceous earth filtration device with backwashing function. Background Technology

[0002] The quality of swimming pool water is not only central to the quality of swimming venues but also closely related to the health of swimmers. Turbidity is commonly used to reflect water quality; it is an indicator of the physical properties of water, reflecting not only the content of suspended matter but also its size, shape, and refractive index. Colloidal substances in water are the main contributor to turbidity, remaining stable for extended periods and difficult to remove by gravity. Furthermore, colloids cannot be oxidized by disinfectants and can only be removed through filtration. Therefore, using filters with higher filtration precision in swimming pool water treatment systems is an effective measure to achieve lower pool water turbidity. Thus, filtration is the most critical process in swimming pool water treatment systems.

[0003] Diatomaceous earth filters are filtration devices that use diatomaceous earth as the main medium and utilize the fineness and porosity of diatomaceous earth particles to remove suspended particles, colloids and other impurities from swimming pool water. Diatomaceous earth filters can not only hold a lot of dust and impurities, but also require less backwashing water. However, after long-term use, a lot of dust accumulates, and backwashing alone cannot effectively clean the filter rods, which reduces the filtration efficiency to some extent and leads to poor equipment performance. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem that existing diatomaceous earth filter devices cannot effectively clean the filter rods by relying solely on backwashing, thus affecting filtration efficiency, and to provide a diatomaceous earth filter device with backwashing function.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A diatomaceous earth filter device with backwashing function includes a tank, and a filter disc and a water distributor are arranged in sequence from top to bottom inside the tank.

[0007] The filter disc is rotatably mounted on the inner wall of the tank. A filter rod is located below the filter disc at the liquid passage hole of the filter disc, and a diatomaceous earth filter membrane is attached to the outside of the filter rod.

[0008] The water distributor is fixedly installed on the inner wall of the tank, and the inlet and outlet of the water distributor are connected to the inlet and outlet of the tank, respectively.

[0009] The top of the tank is equipped with a motor, and the output shaft of the motor is equipped with a rotating shaft. One end of the rotating shaft extends into the tank and is connected to the filter disc.

[0010] Furthermore, the filter rod includes an elastic support member, and connectors and plugs respectively fixed to both ends of the elastic support member;

[0011] The connector is installed inside the liquid passage hole of the filter disc;

[0012] The elastic support is fitted with a filter screen, and the two ends of the filter screen are connected to a connector and a plug, respectively.

[0013] The diatomaceous earth filter membrane is attached to the outer surface of the filter screen.

[0014] Furthermore, the elastic support member is a support spring;

[0015] The two ends of the support spring are connected to the connector and the plug, respectively. The filter screen is sleeved on the outside of the support spring, and the two ends of the filter screen are connected to the connector and the plug, respectively.

[0016] Furthermore, the water distributor includes a water distribution pipe having the inlet and outlet and being cross-shaped;

[0017] The water distribution pipe is provided with a partition in the middle to separate the inlet and outlet.

[0018] Several water distribution holes are provided below the water distribution pipe.

[0019] Furthermore, the tank body includes an upper end cap, a tank body, and a lower end cap connected sequentially from top to bottom; the bottom of the lower end cap is provided with a drain port.

[0020] Furthermore, the upper end cap includes an outer end cap and an inner end cap;

[0021] The outer end cap is connected to the tank body, the inner end cap is connected to the filter disc, and one end of the rotating shaft is connected to the top of the inner end cap.

[0022] Furthermore, a support column is rotatably mounted in the middle of the filter disc, and the lower end of the support column is connected to the top of the water distributor.

[0023] Furthermore, a sealing ring is provided at the connection between the filter disc and the support column.

[0024] Furthermore, the motor is a swing motor.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] 1. The diatomaceous earth filter device with backwashing function provided by this utility model is equipped with a motor to drive the filter disc to rotate, so that the filter rod installed at the liquid passage hole of the filter disc swings back and forth in the tank, thereby enhancing the rinsing effect on the diatomaceous earth filter membrane attached to the surface of the filter rod and helping to maintain the continuous and efficient filtration capacity of the filter rod.

[0027] 2. The diatomaceous earth filter device with backwashing function provided by this utility model consists of a filter rod composed of a support spring, a filter screen and a diatomaceous earth filter membrane attached to the surface of the filter screen. Since the support spring has a certain elasticity, when the motor drives the filter disc to rotate, the support spring can enhance the swing amplitude of the filter rod and further enhance the rinsing effect on the diatomaceous earth filter membrane. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the filter rod structure in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the water distributor in an embodiment of this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1-Tank body, 11-Upper head, 111-Outer head, 112-Inner head, 12-Tank body, 13-Lower head, 131-Drain outlet, 2-Filter plate, 3-Water distributor, 31-Water distribution pipe, 32-Water distribution hole, 4-Filter rod, 41-Connector, 42-Plug, 43-Filter screen, 5-Inlet pipe, 6-Outlet pipe, 7-Motor, 8-Rotating shaft, 9-Support column, 10-Sealing ring. Detailed Implementation

[0032] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] like Figure 1 As shown, a diatomaceous earth filtration device with backwashing function includes a tank 1. Inside the tank 1, a filter disc 2 and a water distributor 3 are arranged sequentially from top to bottom. The filter disc 2 is rotatably mounted on the inner wall of the tank 1. A filter rod 4 is located below the filter disc 2 at the liquid passage hole of the filter disc 2. A diatomaceous earth filter membrane is attached to the outside of the filter rod 4. The water distributor 3 is fixedly mounted on the inner wall of the tank 1, and the liquid inlet and liquid outlet of the water distributor 3 are connected to the liquid inlet 5 and liquid outlet 6 of the tank 1, respectively. A motor 7 is provided on the top of the tank 1. The motor 7 is an oscillating motor. A rotating shaft 8 is provided at the end of the output shaft of the motor 7. One end of the rotating shaft 8 extends into the tank 1 and is connected to the filter disc 2.

[0034] like Figure 2As shown, to increase the contact area between the filter rod 4 and the pool water entering the tank 1, the filter rod 4 includes a support spring and connectors 41 and plugs 42 fixed to both ends of the support spring. Connectors 41 are installed inside the liquid passage holes of the filter disc 2. A filter screen 43 is sleeved on the outside of the support spring, with both ends of the filter screen 43 connected to connectors 41 and plugs 42 respectively. A diatomaceous earth filter membrane is attached to the outer surface of the filter screen 43. Through the properties of diatomaceous earth, suspended particles, colloids, and other impurities in the pool water are effectively removed.

[0035] like Figure 3 As shown, in order to ensure that the pool water to be filtered can enter the tank 1 evenly and that the pool water filtered through the diatomaceous earth filter membrane can be discharged, the water distributor 3 includes a water distribution pipe 31 with an inlet and an outlet, and in a cross shape.

[0036] like Figure 3 As shown, in order to prevent unfiltered pool water entering the water distribution pipe 31 from being discharged directly from the outlet, a partition is provided in the middle of the water distribution pipe 31 to separate the inlet and outlet.

[0037] like Figure 3 As shown, in order to allow unfiltered pool water to enter the tank 1, or filtered pool water to be discharged through the water distribution pipe 31, a number of water distribution holes 32 are provided at the bottom of the water distribution pipe 31; moreover, the water distribution holes 32 can also perform preliminary filtration of unfiltered pool water to prevent larger impurities from entering the tank 1.

[0038] like Figure 1 As shown, the tank 1 includes an upper end cap 11, a tank body 12, and a lower end cap 13 connected from top to bottom; in order to clean and discharge the filtered impurities and the rinsed diatomaceous earth filter membrane, a drain port 131 is provided at the bottom of the lower end cap 13.

[0039] like Figure 1 As shown, the upper end cap 11 includes an outer end cap 111 and an inner end cap 112; the outer end cap 111 is connected to the tank body 12, the inner end cap 112 is connected to the filter plate 2, and one end of the rotating shaft 8 is connected to the top of the inner end cap 112.

[0040] like Figure 1 As shown, in order to support and fix the filter disc 2 inside the tank 1, a support column 9 is rotatably installed in the middle of the filter disc 2, and the lower end of the support column 9 is connected to the top of the water distributor 3; a sealing ring 10 is provided at the connection between the filter disc 2 and the support column 9.

[0041] The diatomaceous earth filter device with backwashing function provided by this utility model is used in which the pool water to be filtered enters the water distribution pipe 31 through the liquid inlet 5 of the tank 1, and enters the tank 1 after being dispersed by the water distribution holes 32 of the water distribution pipe 31; after the pool water is filtered by the diatomaceous earth filter membrane on the filter screen 43, the impurities are adsorbed on the diatomaceous earth filter membrane, and the filtered pool water is discharged through the water distribution holes 32, the liquid outlet of the water distribution pipe 31 and the liquid outlet 6.

[0042] When backwashing is required, filtered pool water is injected into tank 1 through the inlet 5 of tank 1. The filtered pool water washes the diatomaceous earth filter membrane attached to the surface of filter screen 43. At the same time, the swing motor 7 is started, which drives the filter disc 2 to rotate back and forth in tank 1 through the rotating shaft 8. Furthermore, the filter rod 4 swings back and forth in tank 1, so that the filter rod 4 is in full contact with the filtered pool water in tank 1. The diatomaceous earth filter membrane of the filter rod 4 is washed into tank 1 and discharged from the drain port 131 of tank 1, thus completing the backwashing.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A diatomaceous earth filter device with backwashing function, characterized in that, It includes a tank (1), and inside the tank (1) are a filter plate (2) and a water distributor (3) arranged from top to bottom; The filter disc (2) is rotatably installed on the inner wall of the tank (1). A filter rod (4) is provided at the liquid passage hole of the filter disc (2) and located below the filter disc (2). A diatomaceous earth filter membrane is attached to the outside of the filter rod (4). The water distributor (3) is fixedly installed on the inner wall of the tank (1), and the inlet and outlet of the water distributor (3) are connected to the inlet pipe (5) and outlet pipe (6) of the tank (1) respectively. The top of the tank (1) is equipped with a motor (7), and the output shaft of the motor (7) is equipped with a rotating shaft (8). One end of the rotating shaft (8) extends into the tank (1) and is connected to the filter disc (2).

2. The diatomaceous earth filter device with backwashing function according to claim 1, characterized in that: The filter rod (4) includes an elastic support member, and a connector (41) and a plug (42) respectively fixed to both ends of the elastic support member; The connector (41) is installed in the liquid passage hole of the filter plate (2); The elastic support is fitted with a filter screen (43), and the two ends of the filter screen (43) are connected to the connector (41) and the plug (42) respectively. The diatomaceous earth filter membrane is attached to the outer surface of the filter screen (43).

3. The diatomaceous earth filter device with backwashing function according to claim 2, characterized in that: The elastic support member is a support spring; The two ends of the support spring are connected to the connector (41) and the plug (42) respectively. The filter screen (43) is sleeved on the outside of the support spring, and the two ends of the filter screen (43) are connected to the connector (41) and the plug (42) respectively.

4. The diatomaceous earth filter device with backwashing function according to claim 1, characterized in that: The water distributor (3) includes a water distribution pipe (31) having the liquid inlet and liquid outlet and being cross-shaped; The middle part of the water distribution pipe (31) is provided with a partition for separating the inlet and outlet; Several water distribution holes (32) are provided below the water distribution pipe (31).

5. The diatomaceous earth filter device with backwashing function according to claim 1, characterized in that: The tank (1) includes an upper end cap (11), a tank body (12) and a lower end cap (13) connected from top to bottom; the bottom of the lower end cap (13) is provided with a drain port (131).

6. The diatomaceous earth filter device with backwashing function according to claim 5, characterized in that: The upper end cap (11) includes an outer end cap (111) and an inner end cap (112); The outer end cap (111) is connected to the tank body (12), the inner end cap (112) is connected to the filter plate (2), and one end of the rotating shaft (8) is connected to the top of the inner end cap (112).

7. The diatomaceous earth filter device with backwashing function according to claim 1, characterized in that: A support column (9) is rotatably mounted in the middle of the filter disc (2), and the lower end of the support column (9) is connected to the top of the water distributor (3).

8. The diatomaceous earth filter device with backwashing function according to claim 7, characterized in that: A sealing ring (10) is provided at the connection between the filter disc (2) and the support column (9).

9. The diatomaceous earth filter device with backwashing function according to claim 1, characterized in that: The motor (7) is a swing motor (7).

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