Self-dredging water tank water inlet structure

Abstract

The utility model discloses a self-dredging water tank water inlet structure which comprises a first pipe body and a second pipe body, a filter screen is arranged at the connecting position, an outlet pipe and a first backflushing pipe are connected to the first pipe body in parallel, the upper end of the outlet pipe perpendicularly bends and extends towards the side of the first pipe body, and the upper end of the first backflushing pipe bends and extends in the direction parallel to the first pipe body. The second pipe body is connected with a second back-flushing pipe, the second back-flushing pipe is connected with the first back-flushing pipe, the second pipe body is provided with a blow-off pipe behind the second back-flushing pipe, the first pipe body is provided with a mounting seat on the same side opposite to the bending direction of the outlet pipe, one end of the first pipe body back to the second pipe body is closed, and the outlet pipe is provided with a first valve. A second valve is arranged on the second backflushing pipe, a third valve is arranged on the second pipe body and between the blow-off pipe and the second backflushing pipe, and a fourth valve is arranged on the blow-off pipe. The water inlet structure of the water tank is mounted at the water inlet of the water tank and is used for filtering inlet water and automatically dredging the filter screen.

Description

Technical Field

[0001] This utility model relates to water tanks, specifically to a self-draining water tank inlet structure. Background Technology

[0002] Water tanks play multiple important roles in water supply systems, including water storage, pressure regulation, water treatment, water transfer, fire fighting, energy conservation and environmental protection, system buffering, water quality stabilization, system integration, and safety and reliability. Water tanks typically have an inlet on the side. To filter the incoming water, a water inlet structure is usually installed at the inlet. Ordinary water inlet structures can only filter impurities from the incoming water; they cannot self-clean the filter screen, which needs to be disassembled and cleaned when clogged.

[0003] Patent CN215137309 discloses an automatic sewage pipe cleaning and unblocking device, including a filter box and a sewage tank. A filter device is installed inside the filter box. At the same time, an inlet pipe and an outlet pipe are connected to both sides of the filter box. A backflush pipe is installed above the filter box, and the two ends of the backflush pipe are connected to the inlet pipe and the outlet pipe, respectively. A drain pipe is installed at the bottom of the filter box.

[0004] The automatic sewage pipe cleaning device is equipped with a filter box structure. Although it has the effect of backwashing and cleaning the filter screen, it is difficult to install at the water tank inlet due to its large size, and it also lacks a structure for fixing the side of the water tank. Utility Model Content

[0005] The purpose of this utility model is to provide a self-cleaning water tank inlet structure. This water tank inlet structure is installed at the water tank inlet to filter the incoming water and can also self-clean the filter screen.

[0006] To achieve the above objectives, this utility model provides a self-draining water tank inlet structure, comprising a first pipe and a second pipe connected in a straight line to each other. A filter screen is provided at the connection between the first pipe and the second pipe. An outlet pipe and a first backflushing pipe are connected side-by-side to the first pipe. The upper end of the outlet pipe extends vertically to the side of the first pipe. The upper end of the first backflushing pipe extends in a direction parallel to the first pipe. A second backflushing pipe is connected to the second pipe. The upper end of the second backflushing pipe extends in the opposite direction to the first backflushing pipe and is connected to the first backflushing pipe. A drain pipe is provided on the second pipe behind the second backflushing pipe. A mounting seat is provided on the first pipe on the same side as the outlet pipe in the opposite direction of its bend. The end of the first pipe facing away from the second pipe is closed. A first valve is provided on the outlet pipe. A second valve is provided on the second backflushing pipe. A third valve is provided on the second pipe between the drain pipe and the second backflushing pipe. A fourth valve is provided on the drain pipe.

[0007] Preferably, the first backflush pipe is provided with a first flange plate at its end, the second backflush pipe is provided with a second flange plate at its end, a first annular sealing gasket is provided between the first flange plate and the second flange plate, and a plurality of first bolts are provided circumferentially on the first flange plate. The first bolts pass through the first annular sealing gasket and the second flange in sequence and are then locked by a first nut.

[0008] Preferably, the connecting ends of the first pipe body and the second pipe body are respectively provided with a third flange plate and a fourth flange plate, and an annular positioning plate is provided between the third flange plate and the fourth flange plate. The filter screen is located at the center of the annular positioning plate. Multiple second bolts are inserted into the third flange plate circumferentially. The second bolts pass through the annular positioning plate and the fourth flange plate in sequence and are then locked by a second nut.

[0009] Preferably, a second annular sealing gasket is provided on both sides of the annular positioning plate, and the second bolt passes through the second annular sealing gasket.

[0010] Preferably, two locating pins are provided on the outer end face of the third flange plate, and the annular locating plate, the second annular sealing gasket and the fourth flange plate are respectively provided with a first pin hole, a second pin hole and a third pin hole that cooperate with the locating pins.

[0011] Preferably, a fifth flange plate is provided at the end of the first pipe body, and a third annular sealing gasket and an expansion cover plate are sequentially provided on the outside of the fifth flange plate. Multiple third bolts are inserted into the fifth flange plate circumferentially, and the third bolts sequentially pass through the third annular sealing gasket and the fifth flange and are then locked by a third nut.

[0012] Preferably, a sixth flange plate is provided at the outer end of the outlet pipe, and a seventh flange plate is provided at the outer end of the mounting base.

[0013] According to the above technical solution, this utility model provides a self-draining water tank inlet structure, including a first pipe and a second pipe that are directly connected to each other. A filter screen is provided at the connection between the first pipe and the second pipe. An outlet pipe and a first backflushing pipe are connected in parallel on the first pipe. The upper end of the outlet pipe extends vertically to the side of the first pipe. The upper end of the first backflushing pipe extends in a direction parallel to the first pipe. A second backflushing pipe is connected to the second pipe. The upper end of the second backflushing pipe extends in the opposite direction to the first backflushing pipe and is connected to the first backflushing pipe. A drain pipe is provided on the second pipe behind the second backflushing pipe. A mounting seat is provided on the first pipe on the same side as the outlet pipe in the opposite direction of the bend. The end of the first pipe facing away from the second pipe is closed. A first valve is provided on the outlet pipe. A second valve is provided on the second backflushing pipe. A third valve is provided on the second pipe between the drain pipe and the second backflushing pipe. A fourth valve is provided on the drain pipe.

[0014] The installation method, unblocking principle, and beneficial effects of the water tank inlet structure are as follows:

[0015] Installation method: When installing the water tank inlet structure, first connect the first pipe and the second pipe, and place the filter screen at the connection between the first pipe and the second pipe. Then connect the first backflush pipe and the second backflush pipe. Next, connect the outlet pipe to the water tank inlet. Then, fasten the mounting bracket to one side of the water tank with screws. Finally, connect the second pipe to the external water supply pipe.

[0016] Unblocking principle: During normal water supply, open the first and third valves and close the second and fourth valves. At this time, the water enters from the second pipe body, flows through the filter screen, passes through the first pipe body, and then flows into the water tank from the outlet pipe. When it is necessary to unclog the filter screen, close the first and third valves and open the second and fourth valves. The water enters the second backflushing pipe from the second pipe body, then enters the first backflushing pipe, then enters the first pipe body, and then backflushes the blockage on the filter screen from the other side. The water carrying the blockage is finally discharged through the drain pipe, thus unblocking the filter screen.

[0017] Beneficial effects: 1. By setting four valves, as well as the first pipe body, second pipe body, first backflush pipe, second backflush pipe, outlet pipe and drain pipe, the water tank inlet structure can achieve self-cleaning; 2. By setting the detachable connection structure of the first backflush pipe and the second backflush pipe, as well as the detachable connection structure of the first pipe body and the second pipe body, the volume of individual components is reduced, which facilitates transportation and production, as well as the removal and replacement of the filter screen; 3. By setting the bending extension direction of the outlet pipe to be the same as the extension direction of the mounting base, it is easy to install the water tank inlet structure to the water tank inlet side.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the water tank inlet structure;

[0021] Figure 2 yes Figure 1 A schematic diagram of the overall structure from another perspective;

[0022] Figure 3 This is a schematic diagram of the unfolded structure of the water tank inlet.

[0023] Explanation of reference numerals in the attached figures

[0024] 1-Second pipe body; 2-First pipe body; 3-Outlet pipe; 4-Second backflushing pipe; 5-First backflushing pipe; 6-Mounting base; 7-Seventh flange plate; 8-Extension cover plate; 9-Second valve; 10-Third valve; 11-Fourth valve; 12-First valve; 13-Drain pipe; 14-First pin hole; 15-Second pin hole; 16-Second bolt; 17-Second nut; 18-Filter screen; 19-First flange plate; 20-Second flange plate; 21-First annular gasket; 22-First bolt; 23-First nut; 24-Sixth flange plate; 25-Fifth flange plate; 26-Third annular gasket; 27-Third bolt; 28-Third nut; 29-Fourth flange plate; 30-Third flange plate; 31-Second annular gasket; 32-Annular positioning plate; 33-Positioning pin; 34-Third pin hole. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0027] See Figure 1-3 The self-closing water tank inlet structure shown includes a first pipe 2 and a second pipe 1 connected in a straight line. A filter screen 18 is provided at the connection between the first pipe 2 and the second pipe 1. An outlet pipe 3 and a first backflushing pipe 5 are connected side-by-side to the first pipe 2. The upper end of the outlet pipe 3 extends vertically and bends towards the side of the first pipe 2. The upper end of the first backflushing pipe 5 extends and bends in a direction parallel to the first pipe 2. A second backflushing pipe 4 is connected to the second pipe 1. The upper end of the second backflushing pipe 4 extends and bends in the opposite direction to the first backflushing pipe 5. A drain pipe 13 is provided on the second pipe body 1 behind the second backflushing pipe 4, connected to the first backflushing pipe 5. A mounting seat 6 is provided on the same side of the first pipe body 2 where the outlet pipe 3 bends in the opposite direction. The end of the first pipe body 2 facing away from the second pipe body 1 is closed. A first valve 12 is provided on the outlet pipe 3. A second valve 9 is provided on the second backflushing pipe 4. A third valve 10 is provided on the second pipe body 1 between the drain pipe 13 and the second backflushing pipe 4. A fourth valve 11 is provided on the drain pipe 13.

[0028] By implementing the above technical solution, when installing the water tank inlet structure, first connect the first pipe body 2 and the second pipe body 1, and set the filter screen 18 at the connection between the first pipe body 2 and the second pipe body 1. Then connect the first backflush pipe 5 and the second backflush pipe 4. Then connect the outlet pipe 3 to the water tank inlet. After that, fasten the mounting base 6 to one side of the water tank with screws. Finally, connect the second pipe body 1 to the external water supply pipe. When the water supply is in normal use, open the first valve 12 and the third valve 10, and close the second valve 9 and the fourth valve 11. At this time, the water supply enters from the second pipe body 1, flows through the filter screen 18 for filtration, passes through the first pipe body 2, and then flows into the water tank from the outlet pipe 3. When it is necessary to unclog the filter screen 18, close the first valve 12 and the third valve 10, and open the second valve 9 and the fourth valve 11. The water supply enters the second backflushing pipe 4 from the second pipe body 1, then enters the first backflushing pipe 5, then enters the first pipe body 2, and then backflushes the blockage on the filter screen 18 from the other side. The water supply carrying the blockage is finally discharged through the drain pipe 13, thereby achieving unclogging. By setting four valves, as well as the first pipe body 2, the second pipe body 1, the first backflush pipe 5, the second backflush pipe 4, the outlet pipe 3, and the drain pipe 13, the water tank inlet structure achieves self-cleaning. The detachable connection structure of the first backflush pipe 5 and the second backflush pipe 4, as well as the detachable connection structure of the first pipe body 2 and the second pipe body 1, reduces the volume of individual components, facilitates transportation and production, and facilitates the removal and replacement of the filter screen 18. By setting the bending extension direction of the outlet pipe 3 to be the same as the extension direction of the mounting base 6, it is convenient to install the water tank inlet structure to the water tank inlet side.

[0029] In this embodiment, to further provide a detachable connection between the first backflush pipe 5 and the second backflush pipe 4, a first flange plate 19 is provided at the end of the first backflush pipe 5, and a second flange plate 20 is provided at the end of the second backflush pipe 4. A first annular sealing gasket 21 is provided between the first flange plate 19 and the second flange plate 20. A plurality of first bolts 22 are inserted circumferentially on the first flange plate 19. The first bolts 22 pass through the first annular sealing gasket 21 and the second flange in sequence and are then locked by a first nut 23.

[0030] In this embodiment, to further provide a detachable connection between the first pipe body 2 and the second pipe body 1, a third flange plate 30 and a fourth flange plate 29 are respectively provided at the connection ends of the first pipe body 2 and the second pipe body 1. An annular positioning plate 32 is provided between the third flange plate 30 and the fourth flange plate 29. The filter screen 18 is located at the center of the annular positioning plate 32. A plurality of second bolts 16 are inserted circumferentially on the third flange plate 30. The second bolts 16 pass through the annular positioning plate 32 and the fourth flange plate 29 in sequence and are then locked by a second nut 17. The filter screen 18 is fixed inside the annular positioning plate 32 and is used to filter solid impurity particles.

[0031] In this embodiment, second annular sealing gaskets 31 are provided on both sides of the annular positioning plate 32, and the second bolt 16 passes through the second annular sealing gaskets 31. The second annular sealing gaskets 31 provided on both sides provide a better sealing effect at the connection.

[0032] In this embodiment, two locating pins 33 are provided on the outer end face of the third flange plate 30. The annular locating plate 32, the second annular sealing gasket 31, and the fourth flange plate 29 are respectively provided with a first pin hole 14, a second pin hole 15, and a third pin hole 34 that cooperate with the locating pins 33. The locating pins 33 enable the annular locating plate 32, the second annular sealing gasket 31, and the fourth flange plate 29 to be aligned during installation.

[0033] In this embodiment, a fifth flange plate 25 is provided at the end of the first pipe body 2. A third annular sealing gasket 26 and an extension cover plate 8 are sequentially provided outside the fifth flange plate 25. Multiple third bolts 27 are inserted circumferentially into the fifth flange plate 25. The third bolts 27 pass through the third annular sealing gasket 26 and the fifth flange in sequence and are then locked by a third nut 28. With this configuration, a detachable extension cover plate 8 is provided. The extension cover plate 8 can be fully enclosed for sealing the end of the first pipe body 2, or it can be used as an extension. A cylinder is installed on the extension cover plate 8. The cylinder shaft extends into the first pipe body 2 and is connected to a piston structure. When the filter screen 18 is severely clogged, the piston is pushed by the cylinder to increase the backwashing effect on the filter screen 18.

[0034] In this embodiment, a sixth flange plate 24 is provided at the outer end of the outlet pipe 3, and a seventh flange plate 7 is provided at the outer end of the mounting base 6. The sixth flange plate 24 and the seventh flange plate 7 facilitate the quick and easy fixing of the water tank inlet structure to the water tank using corresponding screws.

[0035] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0036] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0037] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A self-draining water tank inlet structure, characterized in that, The water tank inlet structure includes a first pipe (2) and a second pipe (1) that are linearly connected to each other. A filter screen (18) is provided at the connection between the first pipe (2) and the second pipe (1). An outlet pipe (3) and a first backflush pipe (5) are connected side by side to the first pipe (2). The upper end of the outlet pipe (3) extends perpendicularly to the side of the first pipe (2). The upper end of the first backflush pipe (5) extends in a direction parallel to the first pipe (2). A second backflush pipe (4) is connected to the second pipe (1). The upper end of the second backflush pipe (4) extends in the opposite direction to the first backflush pipe (5) and extends in parallel with the first backflush pipe (5). The pipe (5) is connected, and a drain pipe (13) is provided on the second pipe body (1) behind the second backflushing pipe (4). A mounting seat (6) is provided on the first pipe body (2) on the same side as the outlet pipe (3) which is bent in the opposite direction. The end of the first pipe body (2) facing away from the second pipe body (1) is closed. A first valve (12) is provided on the outlet pipe (3). A second valve (9) is provided on the second backflushing pipe (4). A third valve (10) is provided on the second pipe body (1) between the drain pipe (13) and the second backflushing pipe (4). A fourth valve (11) is provided on the drain pipe (13).

2. The self-draining water tank inlet structure according to claim 1, characterized in that, The first backflush pipe (5) is provided with a first flange plate (19) at its end, and the second backflush pipe (4) is provided with a second flange plate (20) at its end. A first annular sealing gasket (21) is provided between the first flange plate (19) and the second flange plate (20). A plurality of first bolts (22) are inserted into the first flange plate (19) along the circumferential direction. The first bolts (22) pass through the first annular sealing gasket (21) and the second flange in sequence and are then locked by a first nut (23).

3. The self-closing water tank inlet structure according to claim 1, characterized in that, The first pipe body (2) and the second pipe body (1) are respectively provided with a third flange plate (30) and a fourth flange plate (29). An annular positioning plate (32) is provided between the third flange plate (30) and the fourth flange plate (29). The filter screen (18) is located at the center of the annular positioning plate (32). Multiple second bolts (16) are inserted into the third flange plate (30) along the circumferential direction. The second bolts (16) pass through the annular positioning plate (32) and the fourth flange plate (29) in sequence and are then locked by a second nut (17).

4. The self-draining water tank inlet structure according to claim 3, characterized in that, The annular positioning plate (32) is provided with a second annular sealing gasket (31) on both sides, and the second bolt (16) is provided through the second annular sealing gasket (31).

5. The self-closing water tank inlet structure according to claim 4, characterized in that, Two positioning pins (33) are provided on the outer end face of the third flange plate (30). The annular positioning plate (32), the second annular sealing gasket (31) and the fourth flange plate (29) are respectively provided with a first pin hole (14), a second pin hole (15) and a third pin hole (34) that cooperate with the positioning pins (33).

6. The self-draining water tank inlet structure according to claim 5, characterized in that, The first pipe body (2) is provided with a fifth flange plate (25) at its end. A third annular sealing gasket (26) and an extension cover plate (8) are arranged in sequence outside the fifth flange plate (25). Multiple third bolts (27) are inserted into the fifth flange plate (25) along the circumferential direction. The third bolts (27) pass through the third annular sealing gasket (26) and the fifth flange in sequence and are then locked by a third nut (28).

7. The self-draining water tank inlet structure according to claim 5, characterized in that, The outer end of the outlet pipe (3) is provided with a sixth flange plate (24), and the outer end of the mounting base (6) is provided with a seventh flange plate (7).

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