A pre-filter backwash device

Abstract

The utility model provides a prefilter backflush device relates to prefilter technical field has solved the problem that the filter screen may not be washed clean when the backflush filter washes now, including prefilter body, the prefilter body includes main part end and bottle body, chamber is opened in the main part end, the top of main part end is opened and has the through -hole, the through -hole extends to the chamber, the bottle body is installed below the main part end, be provided with first filter assembly in the bottle body, be provided with second filter assembly in first filter assembly, the top of first filter assembly is provided with adjusting assembly, and the position of second filter assembly in first filter assembly can be controlled to adjusting assembly, thereby adjusting the flow direction of water. The device can clean the filter screen from inside to outside with clean water when backflushing through first filter assembly and second filter assembly, and improves the cleaning effect.

Description

Technical Field

[0001] This utility model belongs to the field of pre-filter technology, and more specifically, it relates to a pre-filter backwashing device. Background Technology

[0002] Secondary pollution from rust, silt, and other contaminants in urban water supply pipes leads to deterioration of household water quality and malfunction of water-using equipment. This also reduces the lifespan of other water-using appliances and can even pose significant safety hazards. Therefore, it is necessary to install a pre-filter to improve water quality and protect household water-using equipment. To avoid the need for frequent filter cleaning, a backwashing pre-filter is available on the market.

[0003] Based on the above, the inventors have discovered the following problem: When backwashing current pre-filters are backwashed, they mostly use water flow to rinse the surface of the filter screen. However, since some impurities are embedded in the micropores of the filter screen, simply cleaning the filter screen cannot clean its surface thoroughly.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a pre-filter backwashing device in order to achieve a more practical purpose. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a pre-filter backwashing device to solve the issue that current backwashing filters may not clean the filter screen properly during cleaning.

[0006] The purpose and effectiveness of this utility model's pre-filter backwashing device are achieved through the following specific technical means: A pre-filter backwashing device includes a pre-filter body, which comprises a main body end and a bottle body. A chamber is formed within the main body end, and a through hole is formed at the top of the main body end, extending into the chamber. The bottle body is installed below the main body end. A first filter assembly is disposed within the bottle body, and a second filter assembly is disposed within the first filter assembly. An adjustment component is disposed at the top of the first filter assembly, which can control the position of the second filter assembly within the first filter assembly, thereby adjusting the water flow direction. A first drain pipe is formed at the bottom of the bottle body. An inlet pipe is installed on the surface of the second filter assembly, and an outlet pipe is installed on the surface of the bottle body, one end of which is connected to the first filter assembly.

[0007] Furthermore, the first filter assembly includes a first upper connector and a first lower connector, a first filter screen is installed between the first upper connector and the first lower connector, the first upper connector is connected to the bottle body through a support member, a gap is left between the first upper connector and the bottle body, the gap allows water to pass through, a first round hole is opened at the top of the first upper connector, and the water outlet pipe is connected to the first upper connector.

[0008] Furthermore, the second filter assembly includes a second upper connector and a second lower connector, with a second filter screen installed between the second upper connector and the second lower connector. The second upper connector is located within a first circular hole and matches the first circular hole. A sealing disc is installed on the top of the second upper connector, and a cylindrical mounting component is installed on the top of the sealing disc. The surface of the mounting component has multiple slots, and the surface of the sealing disc has a second circular hole extending into the second upper connector. When the sealing disc contacts the first upper connector, water can enter the second filter screen through the slots and the second circular hole.

[0009] Furthermore, the adjustment assembly includes a mounting bracket installed on the top of the main body, through which a screw is installed. A seal is rotatably connected to the bottom of the screw, and a movable part is installed at the bottom of the seal. The diameter of the movable part matches the through hole, while the diameter of the seal is larger than the diameter of the through hole. The movable part is threadedly connected to the mounting bracket.

[0010] Furthermore, a second drain pipe is installed inside the first lower connector. The second drain pipe is L-shaped, with one end extending into the first lower connector and the other end penetrating the bottle body and extending to the outside of the bottle body. The bottom of the second lower connector is open, and the second lower connector is inserted into the second drain pipe. The outer diameter of the second lower connector matches the inner diameter of the second drain pipe.

[0011] Furthermore, rubber pads are provided at the bottom of the seal and at the top of the sealing disc.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention, through the first and second filter components, allows for the cleaning of the filter screen from the inside out with clean water during backwashing, thus improving the cleaning effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a pre-filter backwashing device according to this utility model.

[0014] Figure 2 This is a schematic diagram of the assembly of a pre-filter backwashing device according to the present invention.

[0015] Figure 3 This is a cross-sectional view of the main body of a pre-filter backwashing device according to this utility model.

[0016] Figure 4 This is a cross-sectional schematic diagram of the second filter component in a pre-filter backwashing device according to the present invention.

[0017] Figure 5 This is a cross-sectional schematic diagram of the bottle body in a pre-filter backwashing device of this utility model.

[0018] Figure 6 This is a plan view of a pre-filter backwashing device according to the present invention during filtration.

[0019] Figure 7 This is a plan view of a pre-filter backwashing device according to the present invention during backwashing.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Pre-filter body; 2. Main body end; 201. Chamber; 202. Through hole; 3. Bottle body; 4. First filter assembly; 401. First upper connector; 402. First lower connector; 403. First filter screen; 404. Support member; 405. First circular hole; 5. Second filter assembly; 501. Second upper connector; 502. Second lower connector; 503. Second filter screen; 504. Sealing disc; 505. Mounting component; 506. Groove; 507. Second round hole; 6. Adjustment assembly; 601. Mounting bracket; 602. Screw; 603. Seal; 604. Moving part; 7. First sewage pipe; 8. Inlet pipe; 9. Outlet pipe; 10. Gap; 11. Second sewage pipe. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] Example: As attached Figure 1 To be continued Figure 7 As shown: This utility model provides a pre-filter backwashing device, including a pre-filter body 1. The pre-filter body 1 includes a main body end 2 and a bottle body 3. The main body end 2 can be a cuboid or other shapes. The main body end 2 is preferably made of metal. A chamber 201 is formed inside the main body end 2. The chamber 201 is cylindrical and extends downward to the surface of the main body end 2. A through hole 202 is formed at the top of the main body end 2 and extends into the chamber 201. The through hole 202 allows a moving part 604 to pass through. A water outlet pipe 9 is installed on the surface of the bottle body 3. One end of the water outlet pipe 9 is connected to a first filter assembly 4.

[0023] The bottle body 3 is installed below the main body end 2. The bottle body 3 is a cylinder and is made of plastic, preferably acrylic. The acrylic bottle body 3 allows the dirt on the surface of the first filter component 4 to be clearly seen. The bottle body 3 is threaded into the chamber 201, which facilitates the installation and disassembly of the bottle body 3.

[0024] Furthermore, a first filter assembly 4 is provided inside the bottle body 3. The first filter assembly 4 includes a first upper connector 401 and a first lower connector 402. A first filter screen 403 is installed between the first upper connector 401 and the first lower connector 402. The first upper connector 401 is a cylindrical shape with an opening at the bottom, and the first lower connector 402 is a cylindrical shape with an opening at the top, and they have the same diameter. The first filter screen 403 is installed between the first upper connector 401 and the first lower connector 402. The inner wall of the connector 402 is connected by multiple evenly distributed support strips (not shown in the attached figure). The support strips can also support the first filter screen 403. The first upper connector 401 is connected to the bottle body 3 through the support 404. A gap 10 is left between the first upper connector 401 and the bottle body 3, that is, the diameter of the first upper connector 401 is smaller than the inner diameter of the bottle body 3. The gap 10 allows water to pass through. A first round hole is opened at the top of the first upper connector 401. The water outlet pipe 9 is connected to the first upper connector 401.

[0025] When in use, water can enter the chamber 201 through the inlet pipe 8, then enter the bottle body 3 through the gap 10, and then enter the first filter screen 403. The first filter screen 403 can filter the water, so the water in the first filter screen 403 is clean, and then it is discharged from the outlet pipe 9.

[0026] Furthermore, a second filter assembly 5 is provided within the first filter assembly 4. The second filter assembly 5 includes a second upper connector 501 and a second lower connector 502. A second filter screen 503 is installed between the second upper connector 501 and the second lower connector 502. Both the second upper connector 501 and the second lower connector 502 are cylindrical. The inner walls of the second upper connector 501 and the second lower connector 502 are also connected by multiple evenly distributed support strips (not shown in the attached figures). Simultaneously, the support strips can support the second filter screen 503. The second upper connector 501 is located within the first circular hole, and the second upper connector 501 matches the first circular hole. The fit between component 501 and the first circular hole is relatively tight, and the gap between them is smaller than the micropores on the second filter screen 503, which can prevent impurities from entering. A sealing plate 504 is installed on the top of the second upper connector 501. The diameter of the sealing plate 504 is the same as the outer diameter of the bottle body 3. A hollow cylindrical mounting component 505 is installed on the top of the sealing plate 504. Multiple slots 506 are opened on the surface of the mounting component 505. A second circular hole is opened on the surface of the sealing plate 504. The second circular hole extends into the second upper connector 501. When the sealing plate 504 contacts the first upper connector 401, water can enter the second filter screen 503 through the slots 506 and the second circular hole.

[0027] Furthermore, an adjustment component 6 is provided on the top of the first filter component 4. The adjustment component 6 includes a mounting bracket 601 installed on the top of the main body end 2. The mounting bracket 601 is located at the center of the through hole 202. A screw 602 is installed through the mounting bracket 601. The through hole of the mounting bracket 601 is provided with a thread that matches the screw 602. A sealing element 603 is rotatably connected to the bottom of the screw 602, so the screw 602 will not rotate with the sealing element 603. A moving part 604 is installed at the bottom of the sealing element 603. The diameter of the moving part 604 matches the through hole 202. The diameter of the sealing element 603 is larger than the diameter of the through hole 202. The moving part 604 is threadedly connected to the mounting component 505. An adjustment handwheel is installed on the free end of the screw 602.

[0028] During use, the adjustment handwheel can be rotated. Rotating the handwheel will drive the screw 602 to rotate, which in turn will cause the seal 603 and the moving part 604 to move downwards. The moving part 604 will then drive the second filter assembly 5 to move downwards. When the seal 603 contacts the top of the main body end 2, the sealing disc 504 contacts the first upper connecting part 401. At the same time, the sealing disc 504 seals the gap 10. Therefore, the water entering from the inlet pipe 8 will enter the second filter screen 503 through the second round hole, and then enter the first filter screen 403 from the second filter screen 503. The water entering the second filter screen 503 overflows from the inside out, so impurities will be blocked on the inner wall of the second filter screen 503. Therefore, the water entering the first filter screen 403 is clean. Then, the water entering the second filter screen 503 overflows from the inside out, cleaning the impurities adsorbed on the outer wall of the first filter screen 403. Compared with the traditional external cleaning method, this method can squeeze the impurities embedded in the micropores of the first filter screen 403 to the outside of the first filter screen 403, thus improving the cleaning effect.

[0029] Furthermore, a first drain pipe 7 is provided at the bottom of the bottle body 3. A valve is installed inside the first drain pipe 7. During backwashing, the valve on the first drain pipe 7 can be opened to discharge sewage. A water inlet pipe 8 is installed on the surface of the second filter assembly 5. The water inlet pipe 8 can be connected to a pipeline.

[0030] Furthermore, a second drain pipe 11 is installed inside the first lower connector 402. The second drain pipe 11 is L-shaped, with one end extending into the first lower connector 402 and the other end penetrating the bottle body 3 and extending to the outside of the bottle body 3. The bottom of the second lower connector 502 is open, and the second lower connector 502 is inserted into the second drain pipe 11. The outer diameter of the second lower connector 502 matches the inner diameter of the second drain pipe 11. A valve is installed inside the second drain pipe 11.

[0031] During filtration, water in bottle 3 flows from the outside to the inside. When the water enters the second filter 503 from the first filter 403, it can clean the impurities adsorbed on the inner wall of the second filter 503. The cleaned impurities will fall into the second drain pipe 11. At this time, the valve on the second drain pipe 11 can be opened to discharge the impurities. Through the above design, the second filter 503 can be cleaned.

[0032] Furthermore, rubber pads are provided at the bottom of the sealing member 603 and the top of the sealing disc 504.

[0033] The use of rubber gaskets can improve the sealing of the device.

[0034] The specific usage of this embodiment is as follows: Normal filtration process: Connect the inlet pipe 8 and the outlet pipe 9. Rotate the screw 602 to make the sealing disc 504 contact the top of the chamber 201. Then open the valves of the inlet pipe 8 and the outlet pipe 9. Water enters the chamber 201, then enters the bottle body 3 through the gap 10, and then enters the first filter screen 403. The first filter screen 403 can filter the water, so the water in the first filter screen 403 is clean. Then it is discharged from the outlet pipe 9.

[0035] Backwashing process: Rotate screw 602 to bring seal 603 into contact with the top of main body 2 and seal 504 into contact with first upper connector 401. Then open valves of water inlet pipe 8 and first drain pipe 7. Water will enter the second filter screen 503 from the second round hole, then enter the first filter screen 403 from the second filter screen 503, and then enter the bottle body 3. Since the water flows out from the inside, it can effectively clean the impurities on the surface of the second filter screen 503. Sewage will be discharged from the first drain pipe 7.

[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A pre-filter backwashing device, comprising a pre-filter body (1), characterized in that: The pre-filter body (1) includes a main body end (2) and a bottle body (3). A chamber (201) is provided in the main body end (2). A through hole (202) is provided at the top of the main body end (2). The through hole (202) extends into the chamber (201). The bottle body (3) is installed below the main body end (2). A first filter assembly (4) is provided in the bottle body (3). A second filter assembly (5) is provided in the first filter assembly (4). An adjustment assembly (6) is provided at the top of the first filter assembly (4). The adjustment assembly (6) can control the position of the second filter assembly (5) in the first filter assembly (4), thereby adjusting the flow direction of water. A first drain pipe (7) is provided at the bottom of the bottle body (3). An inlet pipe (8) is installed on the surface of the second filter assembly (5). An outlet pipe (9) is installed on the surface of the bottle body (3). One end of the outlet pipe (9) is connected to the first filter assembly (4).

2. The pre-filter backwashing device as described in claim 1, characterized in that: The first filter assembly (4) includes a first upper connector (401) and a first lower connector (402). A first filter screen (403) is installed between the first upper connector (401) and the first lower connector (402). The first upper connector (401) is connected to the bottle body (3) through a support (404). A gap (10) is left between the first upper connector (401) and the bottle body (3). The gap (10) allows water to pass through. A first round hole is opened on the top of the first upper connector (401). The water outlet pipe (9) is connected to the first upper connector (401).

3. The pre-filter backwashing device as described in claim 2, characterized in that: The second filter assembly (5) includes a second upper connector (501) and a second lower connector (502). A second filter screen (503) is installed between the second upper connector (501) and the second lower connector (502). The second upper connector (501) is located in the first circular hole and matches the first circular hole. A sealing plate (504) is installed on the top of the second upper connector (501). A cylindrical mounting piece (505) is installed on the top of the sealing plate (504). A plurality of slots (506) are opened on the surface of the mounting piece (505). A second circular hole is opened on the surface of the sealing plate (504). The second circular hole extends into the second upper connector (501). When the sealing plate (504) contacts the first upper connector (401), water can enter the second filter screen (503) through the slots (506) and the second circular hole.

4. The pre-filter backwashing device as described in claim 3, characterized in that: The adjustment assembly (6) includes a mounting bracket (601) installed on the top of the main body end (2). A screw (602) is installed through the mounting bracket (601). A seal (603) is rotatably connected to the bottom of the screw (602). A movable part (604) is installed at the bottom of the seal (603). The diameter of the movable part (604) matches the through hole (202). The diameter of the seal (603) is larger than the diameter of the through hole (202). The movable part (604) is threadedly connected to the mounting part (505).

5. The pre-filter backwashing device as described in claim 4, characterized in that: The first lower connector (402) is equipped with a second drain pipe (11). The second drain pipe (11) is L-shaped. One end of the second drain pipe (11) extends into the first lower connector (402), and the other end extends through the bottle body (3) to the outside of the bottle body (3). The bottom of the second lower connector (502) is open. The second lower connector (502) is inserted into the second drain pipe (11). The outer diameter of the second lower connector (502) matches the inner diameter of the second drain pipe (11).

6. The pre-filter backwashing device as described in claim 4, characterized in that: Rubber pads are provided at the bottom of the seal (603) and the top of the seal disc (504).

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