Diatomite filtering device with backwashing function

Abstract

The invention 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 invention, the motor is arranged to drive the filter disc to rotate, so that the filter stick mounted at the liquid passing hole of the filter disc swings back and forth in the tank body, the flushing 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] The present invention relates to a diatomite filtration device, and particularly to a diatomite filtration device with a backwashing function. Background Art

[0002] The quality of pool water is not only the core of the swimming pool venue quality but also closely related to the physical health of swimmers. Generally, turbidity is used to reflect the quality of water. It goes without saying that turbidity is the degree of water turbidity, which is an index reflecting the physical properties of water. The turbidity of water is not only related to the content of suspended substances in water but also related to their size, shape, refractive index, etc. Colloidal substances in water are the main factors forming turbidity, which can remain in a stable state for a long time and are difficult to remove by gravity; moreover, colloids cannot be oxidized by disinfectants and can only be removed by filtration. Therefore, using a filter with a higher filtration accuracy in the swimming pool water treatment system is an effective measure to obtain lower pool water turbidity. So, filtration is the most critical process in the swimming pool water treatment system.

[0003] A diatomite filter is a filtration device that uses diatomite as the main medium and removes suspended particles, colloids and other impurities in swimming pool water by using the fineness and porosity of diatomite particles. The diatomite filter can not only hold more dust and impurities but also has less backwashing water consumption. However, after long-term use, there is a lot of dust accumulation, and only relying on backwashing cannot clean the filter rods well, which reduces the filtration efficiency to a certain extent and results in poor equipment use effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problem that the existing diatomite filtration device cannot clean the filter rods well only by backwashing, which affects the filtration efficiency, and to provide a diatomite filtration device with a backwashing function.

[0005] To solve the above technical problems, the technical solution provided by the present invention is as follows:

[0006] A diatomite filtration device with a backwashing function includes a tank body, in which a filter disc and a water distributor are successively arranged from top to bottom;

[0007] The filter disc is rotatably installed on the inner wall of the tank body. Filter rods are arranged below the filter disc at the liquid passing holes of the filter disc, and a diatomite filter membrane is attached to the outer side of the filter rods;

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

[0009] A motor is arranged at the top of the tank body. The end of the output shaft of the motor is provided with a rotating shaft, and one end of the rotating shaft extends into the tank body and is connected to the filter disc.

[0010] Further, the filter rod includes an elastic support member, and a connecting head and a plug respectively fixed at both ends of the elastic support member;

[0011] The connecting head is installed in the liquid passing hole of the filter disc;

[0012] A filter screen is sleeved outside the elastic support member, and both ends of the filter screen are respectively connected to the connecting head and the plug;

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

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

[0015] Both ends of the support spring are respectively connected to the connecting head and the plug, the filter screen is sleeved outside the support spring, and both ends of the filter screen are respectively connected to the connecting head and the plug.

[0016] Further, the water distributor includes a water distribution pipe having the liquid inlet and the liquid outlet and in a cross shape;

[0017] A partition block for separating the liquid inlet and the liquid outlet is provided in the middle of the water distribution pipe;

[0018] A plurality of water distribution holes are opened below the water distribution pipe.

[0019] Further, the tank body includes an upper head, a tank body and a lower head which are connected in sequence from top to bottom; a sewage outlet is provided at the bottom of the lower head.

[0020] Further, the upper head includes an outer head and an inner head;

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

[0022] Further, a support column is rotatably installed 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] Further, a sealing ring is provided at the connection between the filter disc and the support column.

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

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The diatomite filtering device with a backwashing function provided by the present invention drives the filter disc to rotate through the setting of the motor, so that the filter rod installed at the liquid passing hole of the filter disc swings back and forth in the tank body, so as to enhance the flushing effect on the diatomite filter membrane attached to the surface of the filter rod, and helps to maintain the continuous and efficient filtering ability of the filter rod.

[0027] 2. The diatomite filtration device with backwashing function provided by the present invention has filter rods composed of support springs, filter meshes, and diatomite filtration membranes attached to the surfaces of the filter meshes. Since the support springs have a certain elasticity, when the motor drives the filter disc to rotate, the support springs can enhance the swinging amplitude of the filter rods, further enhancing the flushing effect on the diatomite filtration membranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

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

[0030] Figure 3 is a schematic structural diagram of the water distributor in the embodiment of the present invention.

[0031] Description of the reference numerals: 1 - tank body, 11 - upper head, 111 - outer head, 112 - inner head, 12 - tank body, 13 - lower head, 131 - sewage outlet, 2 - filter disc, 3 - water distributor, 31 - water distribution pipe, 32 - water distribution holes, 4 - filter rod, 41 - connector, 42 - plug, 43 - filter mesh, 5 - liquid inlet pipe orifice, 6 - liquid outlet pipe orifice, 7 - motor, 8 - rotating shaft, 9 - support column, 10 - sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] As Figure 1 shown, a diatomite filtration device with backwashing function includes a tank body 1. Inside the tank body 1, a filter disc 2 and a water distributor 3 are sequentially arranged from top to bottom; the filter disc 2 is rotatably installed on the inner wall of the tank body 1. At the liquid passing holes of the filter disc 2, there are filter rods 4 located below the filter disc 2, and diatomite filtration membranes are attached to the outer sides of the filter rods 4; the water distributor 3 is fixedly installed on the inner wall of the tank body 1, and the liquid inlet and outlet of the water distributor 3 are respectively connected to the liquid inlet pipe orifice 5 and the liquid outlet pipe orifice 6 of the tank body 1; at the top of the tank body 1, there is a motor 7, and the motor 7 is a swinging motor 7; at the end of the output shaft of the motor 7, there is a rotating shaft 8, and one end of the rotating shaft 8 extends into the tank body 1 and is connected to the filter disc 2.

[0034] As Figure 2As shown in the figure, in order to increase the contact area between the filter rod 4 and the pool water to be filtered entering the tank body 1, the filter rod 4 includes a support spring, and connecting heads 41 and plug heads 42 respectively fixed at both ends of the support spring; the connecting head 41 is installed in the liquid passing hole of the filter disc 2; a filter net 43 is sleeved outside the support spring, and both ends of the filter net 43 are connected to the connecting head 41 and the plug head 42 respectively; a diatomite filter membrane is attached to the outer surface of the filter net 43. Through the characteristics of diatomite, suspended particles, colloids and other impurities in the pool water can be effectively removed.

[0035] As Figure 3 shown in the figure, in order to enable the pool water to be filtered to enter the tank body 1 evenly and enable the pool water filtered by the diatomite filter membrane to be discharged, the water distributor 3 includes a water distribution pipe 31 having an inlet and an outlet and in a cross shape;

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

[0037] As Figure 3 shown in the figure, in order to enable the unfiltered pool water to enter the tank body 1 or enable the filtered pool water to be discharged through the water distribution pipe 31, a number of water distribution holes 32 are opened below the water distribution pipe 31; moreover, the water distribution holes 32 can also preliminarily filter the unfiltered pool water to prevent larger impurities from entering the tank body 1.

[0038] As Figure 1 shown in the figure, the tank body 1 includes an upper head 11, a tank body 12 and a lower head 13 connected in sequence from top to bottom; in order to clean and discharge the filtered impurities and the diatomite filter membrane after flushing, a sewage outlet 131 is provided at the bottom of the lower head 13.

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

[0040] As Figure 1 shown in the figure, in order to support and fix the filter disc 2 in the tank body 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] For the diatomite filtration device with backwashing function provided by the present invention, during use, the pool water to be filtered enters the water distribution pipe 31 through the liquid inlet pipe orifice 5 of the tank body 1, and after being dispersed through the water distribution holes 32 of the water distribution pipe 31, it enters the tank body 1; after the pool water is filtered by the diatomite filtration membrane on the filter mesh 43, impurities are adsorbed on the diatomite filtration 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 pipe orifice 6.

[0042] When backwashing is required, filtered pool water is injected into the tank body 1 through the liquid inlet pipe orifice 5 of the tank body 1, and the diatomite filtration membrane attached to the surface of the filter mesh 43 is flushed by the filtered pool water; meanwhile, the swing motor 7 is started, so that the swing motor 7 drives the filter disc 2 to reciprocate in the tank body 1 through the rotating shaft 8. Further, the filter rod 4 reciprocates in the tank body 1, so that the filter rod 4 is in full contact with the filtered pool water in the tank body 1, and the diatomite filtration membrane of the filter rod 4 is washed into the tank body 1 and discharged through the sewage outlet 131 of the tank body 1 to complete the backwashing.

[0043] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claimed rights.

Claims

1. A diatomaceous earth filter device with backwashing function, characterized in that: It comprises a tank body (1), wherein a filter disc (2) and a water distributor (3) are arranged in sequence from top to bottom in the tank body (1); The filter disc (2) is rotatably mounted on the inner wall of the tank body (1); a filter rod (4) located below the filter disc (2) is provided at the liquid passage hole of the filter disc (2); a diatomaceous earth filter membrane is attached to the outer side of the filter rod (4); The water distributor (3) is fixedly mounted on the inner wall of the tank body (1), and the liquid inlet and the liquid outlet of the water distributor (3) are respectively connected to the liquid inlet pipe opening (5) and the liquid outlet pipe opening (6) of the tank body (1); A motor (7) is provided on the top of the tank body (1), a rotating shaft (8) is provided at the end of the output shaft of the motor (7), and one end of the rotating shaft (8) extends into the tank body (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) comprises an elastic support member, and a connecting head (41) and a plug (42) respectively fixed to two ends of the elastic support member; The connector (41) is installed in the liquid passage hole of the filter disc (2); The elastic support member is externally sleeved with a filter screen (43), and the two ends of the filter screen (43) are respectively connected to a connector (41) and a plug (42); 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 respectively connected to the connecting head (41) and the plug (42); the filter screen (43) is sleeved outside the support spring, and the two ends of the filter screen (43) are respectively connected to the connecting head (41) and the plug (42).

4. The diatomaceous earth filter device with backwashing function according to claim 1, characterized in that: The water distributor (3) comprises a cross-shaped water distribution pipe (31) having the liquid inlet and the liquid outlet; A partition block for separating a liquid inlet and a liquid outlet is provided in the middle of the water distribution pipe (31); A plurality of 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 body (1) comprises an upper sealing head (11), a tank body (12) and a lower sealing head (13) which are sequentially connected from top to bottom; a sewage outlet (131) is provided at the bottom of the lower sealing head (13).

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