Sand filter for water treatment

Abstract

The utility model discloses a sand filter for water treatment, which comprises a water inlet pipe and a water outlet pipe, a first connecting pipe and a second connecting pipe are connected between the water inlet pipe and the water outlet pipe, a first valve is arranged on the water outlet pipe, and a second valve and a third valve are arranged on the first connecting pipe. A first sand filtering mechanism is connected to the first connecting pipe, a fourth valve and a fifth valve are arranged on the second connecting pipe, a second sand filtering mechanism is connected to the second connecting pipe, and a backwashing mechanism is arranged between the water outlet pipe and the first sand filtering mechanism and between the water outlet pipe and the second sand filtering mechanism. According to the sand filter for water treatment disclosed by the utility model, the first sand filtering mechanism and the second sand filtering mechanism are arranged, so that sewage can be filtered and the filter plate can be backwashed without shutdown, and the filter plate can be replaced without shutdown, so that the time is saved, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sand filter for water treatment. Background Technology

[0002] The purpose of wastewater treatment is to separate pollutants from wastewater using certain methods, or to decompose them into harmless and stable substances, thereby purifying the wastewater. The basic methods of wastewater treatment are physical, chemical, or biological methods, or a combination of these methods, to remove harmful substances from wastewater. The degree of treatment is determined according to the water quality and the destination of the treated effluent. In the wastewater treatment process, sand filters are often used to clarify and filter sand and gravel from the wastewater. Sand filters, as a water filtration device, can remove suspended solids from water to achieve the purpose of cleaning wastewater, and are widely used in wastewater treatment due to their good filtration effect. However, in actual use, existing sand filters are equipped with backwashing mechanisms to clean the filter plates in order to ensure filtration efficiency. During backwashing, the wastewater treatment process needs to be stopped, and the filter plates need to be replaced after long-term use, which also requires stopping the wastewater treatment process, reducing wastewater treatment efficiency. Utility Model Content

[0003] To address the aforementioned shortcomings in the existing technology, this utility model provides a sand filter for water treatment. The purpose is to solve the problems that existing sand filters require a backwashing mechanism to clean the filter plates in order to ensure filtration effect. During the backwashing process, the wastewater treatment process needs to be stopped. Moreover, the filter plates need to be replaced after long-term use, and the wastewater treatment process also needs to be stopped when replacing the filter plates, which reduces the wastewater treatment efficiency.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A sand filter for water treatment includes an inlet pipe and an outlet pipe. A first connecting pipe and a second connecting pipe are connected between the inlet pipe and the outlet pipe. A first valve is provided on the outlet pipe. A second valve and a third valve are provided on the first connecting pipe. A first sand filter mechanism is connected to the first connecting pipe. A fourth valve and a fifth valve are provided on the second connecting pipe. A second sand filter mechanism is connected to the second connecting pipe. A backwashing mechanism is provided between the outlet pipe and the first and second sand filter mechanisms.

[0006] Furthermore, the backwashing mechanism includes a Y-shaped water pipe connected to the outlet pipe, and the Y-shaped water pipe is equipped with a sixth valve, a seventh valve, and an eighth valve.

[0007] Furthermore, the first sand filter mechanism is located between the second valve and the third valve.

[0008] Furthermore, the second sand filter mechanism is located between the fourth valve and the fifth valve.

[0009] Furthermore, the first sand filter mechanism includes a first housing that communicates with the first connecting pipe, a first filter plate that is inserted into the first housing, a first fixing plate that is fixedly installed on the top of the first filter plate, the first fixing plate that is fixedly connected to the first housing by bolts, a first drain pipe that is connected to the bottom of the first housing, a ninth valve that is installed on the first drain pipe, and the bottom of the first housing that is connected to the end of the Y-shaped water pipe near the seventh valve.

[0010] Furthermore, the second sand filter mechanism includes a second housing that communicates with the second connecting pipe, a second filter plate that is inserted into the second housing, a second fixing plate that is fixedly installed on the top of the second filter plate, the second fixing plate that is fixedly connected to the second housing by bolts, a second drain pipe that is connected to the bottom of the second housing, a tenth valve that is installed on the second drain pipe, and the bottom of the second housing that is connected to the end of the Y-shaped water pipe near the eighth valve.

[0011] The beneficial effects of this utility model are as follows:

[0012] This utility model discloses a sand filter for water treatment. Through the setting of a first sand filtration mechanism and a second sand filtration mechanism, it is possible to filter sewage and backwash the filter plates without stopping the machine. The replacement of the filter plates does not require stopping the machine, saving time and improving sewage treatment efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the first sand filter mechanism of this utility model;

[0015] Figure 3 This is a schematic diagram of the first sand filter mechanism of this utility model.

[0016] Appendix Label Reference Table:

[0017] 1. Inlet pipe; 2. Outlet pipe; 3. First connecting pipe; 4. Second connecting pipe; 5. First valve; 6. Second valve; 7. Third valve; 8. First sand filter mechanism; 9. Fourth valve; 10. Fifth valve; 11. Second sand filter mechanism; 12. Backwashing mechanism; 13. Y-shaped water pipe; 14. Sixth valve; 15. Seventh valve; 16. Eighth valve; 17. First housing; 18. First filter plate; 19. First fixing plate; 20. Second housing; 21. Second filter plate; 22. Second fixing plate; 23. Second drain pipe; 24. Tenth valve; 25. First drain pipe; 26. Ninth valve. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0019] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0020] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] like Figures 1 to 3 As shown, a sand filter for water treatment includes an inlet pipe 1 and an outlet pipe 2, with a first connecting pipe 3 and a second connecting pipe 4 connecting the inlet pipe 1 and the outlet pipe 2.

[0022] A first valve 5 is installed on the water outlet pipe 2, and a second valve 6 and a third valve 7 are installed on the first connecting pipe 3. A first sand filter mechanism 8 is connected to the first connecting pipe 3, and the first sand filter mechanism 8 is located between the second valve 6 and the third valve 7.

[0023] The second connecting pipe 4 is equipped with a fourth valve 9 and a fifth valve 10. The second connecting pipe 4 is connected to a second sand filter mechanism 11, which is located between the fourth valve 9 and the fifth valve 10.

[0024] A backwashing mechanism 12 is provided between the water outlet pipe 2 and the first sand filter mechanism 8 and the second sand filter mechanism 11. The backwashing mechanism 12 includes a Y-shaped water pipe 13 connected to the water outlet pipe 2. A sixth valve 14, a seventh valve 15 and an eighth valve 16 are provided on the Y-shaped water pipe 13.

[0025] The first sand filter mechanism 8 includes a first housing 17 connected to the first connecting pipe 3. A first filter plate 18 is inserted into the first housing 17. A first fixing plate 19 is fixedly installed on the top of the first filter plate 18. The first fixing plate 19 is fixedly connected to the first housing 17 by bolts. A first drain pipe 25 is connected to the bottom of the first housing 17. A ninth valve 26 is installed on the first drain pipe 25. The bottom of the first housing 17 is connected to the end of the Y-shaped water pipe 13 near the seventh valve 15.

[0026] The second sand filter mechanism 11 includes a second housing 20 connected to the second connecting pipe 4. A second filter plate 21 is inserted into the second housing 20. A second fixing plate 22 is fixedly installed on the top of the second filter plate 21. The second fixing plate 22 is fixedly connected to the second housing 20 by bolts. A second drain pipe 23 is connected to the bottom of the second housing 20. A tenth valve 24 is installed on the second drain pipe 23. The bottom of the second housing 20 is connected to the end of the Y-shaped water pipe 13 near the eighth valve 16.

[0027] When the equipment is working, the fourth valve 9 and the fifth valve 10 are closed. Sewage enters from the inlet pipe 1, then through the first connecting pipe 3, into the first housing 17, is filtered by the first filter plate 18, and flows out from the outlet pipe 2.

[0028] When the first filter plate 18 becomes clogged after prolonged use, the fourth valve 9 and the fifth valve 10 are opened, and the second valve 6 and the third valve 7 are closed. Wastewater enters the second housing 20 through the second connecting pipe 4, is filtered by the second filter plate 21, and flows out from the outlet pipe 2.

[0029] When the second filter plate 21 becomes clogged after prolonged use, the second valve 6 and the third valve 7 can be opened, and the fourth valve 9 and the fifth valve 10 can be closed to switch the filtration path without shutting down the machine.

[0030] The first filter plate 18 or the second filter plate 21 can be replaced without stopping the machine, saving time and improving the efficiency of sewage treatment.

[0031] When the first filter plate 18 is backwashed, the second sand filter mechanism 11 filters the sewage. The ninth valve 26 is opened, then the seventh valve 15 and the sixth valve 14 are opened, and then the first valve 5 is closed. The filtered water flows into the first housing 17 from the Y-shaped water pipe 13 to backwash the first filter plate 18. The backwash sewage is discharged from the first drain pipe 25. The first valve 5 is opened, and then the seventh valve 15, the sixth valve 14 and the ninth valve 26 are closed to complete the backwashing of the first filter plate 18.

[0032] When backwashing the second filter plate 21, the first sand filter mechanism 8 filters the sewage, opens the tenth valve 24, then opens the eighth valve 16 and the sixth valve 14, and then closes the first valve 5. The filtered water flows into the second housing 20 from the Y-shaped water pipe 13 to backwash the second filter plate 21. The backwash sewage is discharged from the second drain pipe 23. Open the first valve 5, and then close the eighth valve 16, the sixth valve 14 and the tenth valve 24 to complete the backwashing of the second filter plate 21.

[0033] The backwashing process of the first filter plate 18 and the second filter plate 21 does not require shutdown, saving time and improving wastewater treatment efficiency.

[0034] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A sand filter for water treatment, characterized in that, It includes an inlet pipe (1) and an outlet pipe (2), with a first connecting pipe (3) and a second connecting pipe (4) connecting the inlet pipe (1) and the outlet pipe (2). A first valve (5) is provided on the outlet pipe (2), a second valve (6) and a third valve (7) are provided on the first connecting pipe (3), a first sand filter mechanism (8) is connected to the first connecting pipe (3), a fourth valve (9) and a fifth valve (10) are provided on the second connecting pipe (4), a second sand filter mechanism (11) is connected to the second connecting pipe (4), and a backwashing mechanism (12) is provided between the outlet pipe (2), the first sand filter mechanism (8), and the second sand filter mechanism (11).

2. A sand filter for water treatment according to claim 1, characterized in that: The backwashing mechanism (12) includes a Y-shaped water pipe (13) connected to the water outlet pipe (2), and the Y-shaped water pipe (13) is equipped with a sixth valve (14), a seventh valve (15) and an eighth valve (16).

3. A sand filter for water treatment according to claim 1, characterized in that: The first sand filter mechanism (8) is located between the second valve (6) and the third valve (7).

4. A sand filter for water treatment according to claim 1, characterized in that: The second sand filter mechanism (11) is located between the fourth valve (9) and the fifth valve (10).

5. A sand filter for water treatment according to claim 2, characterized in that: The first sand filter mechanism (8) includes a first housing (17) connected to the first connecting pipe (3), a first filter plate (18) is inserted on the first housing (17), a first fixing plate (19) is fixedly installed on the top of the first filter plate (18), the first fixing plate (19) is fixedly connected to the first housing (17) by bolts, a first drain pipe (25) is connected to the bottom of the first housing (17), a ninth valve (26) is installed on the first drain pipe (25), and the bottom of the first housing (17) is connected to the end of the Y-shaped water pipe (13) near the seventh valve (15).

6. A sand filter for water treatment according to claim 5, characterized in that: The second sand filter mechanism (11) includes a second housing (20) connected to the second connecting pipe (4), a second filter plate (21) is inserted on the second housing (20), a second fixing plate (22) is fixedly installed on the top of the second filter plate (21), the second fixing plate (22) is fixedly connected to the second housing (20) by bolts, a second drain pipe (23) is connected to the bottom of the second housing (20), a tenth valve (24) is installed on the second drain pipe (23), and the bottom of the second housing (20) is connected to one end of the Y-shaped water pipe (13) near the eighth valve (16).

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