Automatic blowdown device for circulating water filter

Abstract

This invention discloses an automatic sewage discharge device for circulating water filtration, belonging to the field of filter technology. It is a filter body used to connect to sewage from a filtration unit. The filter body includes a return pipe and a filter tube located within the return pipe, forming a clean water chamber between the filter tube and the return pipe. A sleeve is installed on the upper part of the filter body. A wave-shaped groove is formed on the inner wall of the sleeve, and a sliding opening and closing device cooperates with the wave-shaped groove to close the filter tube. The sliding opening and closing device divides the sleeve into a filtration chamber and a sewage discharge chamber. A filter screen is attached to the inner wall of the filtration chamber, and an upwardly inclined drain hole is formed on the filtration chamber, communicating with the clean water chamber. This invention solves the technical problem that existing filters require the water-using unit to be shut down during sewage discharge, and is mainly applied to sewage treatment.

Description

Technical Field

[0001] This invention belongs to the field of filter technology, specifically relating to an automatic sewage discharge device for circulating water filtration. Background Technology

[0002] With economic development, ecological environmental protection and rational resource utilization have become the focus of attention. In daily life and production, in order to save water resources, water is often filtered through a circulating system. The filter screens used typically filter and intercept solid particles and other impurities in the circulating water. As impurities gradually accumulate in the filter screen, they will clog it, resulting in a decrease in the flow rate of the circulating water. At the same time, the pressure inside the circulating water pipe will increase, and algae will grow during long-term operation, so regular cleaning is required. Currently, the cleaning of filters is usually done by backwashing or manual cleaning. Manual cleaning is gradually being replaced by backwashing. During backwashing, the pressure change inside the pipe is detected. When the pressure rises, the circulating water pipeline is cut off. Therefore, automatic backwashing requires the machine to be shut down. When the machine is shut down, the circulating water cannot flow, but the water-using equipment cannot be stopped. Under normal circumstances, the water is directly discharged, resulting in water waste. Based on this, our company proposes an automatic sewage discharge device for circulating water filtration that discharges directly without shutting down the machine to replace the existing technology. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide an automatic sewage discharge device for circulating water filtration, so as to solve the technical problem that the water-using unit needs to be shut down when the existing filter discharges sewage.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automatic sewage discharge device for circulating water filtration, for connecting the filter body to the sewage of the filtration unit, characterized in that the filter body includes a return pipe and a filter pipe located inside the return pipe, a clean water chamber is formed between the filter pipe and the return pipe, and a sleeve is installed on the upper part of the filter body.

[0005] A wave-shaped groove is formed on the inner wall of the sleeve, and a sliding opening and closing device is formed to close the filter tube in conjunction with the wave-shaped groove. The sliding opening and closing device divides the sleeve into a filter chamber and a sewage discharge chamber. A filter screen is attached to the inner wall of the filter chamber, and an upwardly inclined drain hole is formed on the filter chamber. The drain hole is connected to the clean water chamber.

[0006] Further: The sliding opening and closing device includes a fixed ring and a rotating plate installed in the fixed ring. A water outlet hole is opened in the middle of the rotating plate. Multiple connecting rods are arranged in a ring array along the fixed ring. The other end of the connecting rod is fixedly connected to the wall of the sewage pipe. A through sliding groove is opened on the connecting rod. The same number of assemblies as the connecting rods are also included.

[0007] A rectangular groove is made on the rotating plate, and one end of the column rod passes through the assembly and is inserted into the rectangular groove, while the other end extends and is inserted into the sliding groove.

[0008] An arc-shaped groove is made on the wall of the fixed ring pipe. The rotating plate extends a lever, which extends out of the arc-shaped groove and inserts into a wave-shaped sliding groove. The space between the fixed ring and the sewage pipe is sealed by a sealing plate.

[0009] Furthermore, the drain holes in the filter chamber are arranged in a spacer pattern, and the filter screen is placed according to the corresponding drain holes.

[0010] Furthermore, the filter screen extends from bottom to top through the drain hole and then out, making it easy to replace the filter screen.

[0011] Furthermore: a winding wheel driven by a motor is installed on the upper part of the filter body, and a rotating wheel is installed on the lower part of the filter body. The filter screen is led out from the rotating wheel and passes through the drain hole from bottom to top to be wound up by the winding wheel.

[0012] Furthermore: an inner groove is provided on the sleeve and the filter tube respectively, and a sliding member is installed between the inner grooves of the sleeve and the filter tube and slides thereon. One side of the sliding member is a rack and pinion, and the other side is provided with a wave-shaped groove.

[0013] The outer ring of the winding reel has meshing teeth that mesh with the rack.

[0014] Compared with the prior art, the present invention has the following advantages: by adding a sliding opening and closing component, the increase in liquid level and internal pressure causes the lever to drive the rotating plate to rotate, exposing the water outlet for non-stop sewage discharge. On the other hand, by designing a plate filter screen, a motor-driven winding wheel is used to replace the filter screen without stopping the machine. At the same time, during the winding process, the meshing teeth of the winding wheel drive the rack of the sliding component and realize the up and down reciprocating motion of the sliding component, so that the sliding opening and closing device opens and closes to discharge sewage. It has good applicability and promotion. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the first embodiment of the present invention;

[0016] Figure 2 This is a structural diagram of the sliding opening and closing device of the present invention;

[0017] Figure 3 This is a structural diagram of the rotating plate and drain pipe of the present invention;

[0018] Figure 4 This is a structural diagram of the second embodiment of the present invention;

[0019] Figure 5 This is the present invention. Figure 4 Enlarged view of a portion of point A in the middle.

[0020] In the diagram: 1. Return pipe; 2. Filter pipe; 3. Clean water chamber; 4. Sleeve; 5. Wave-shaped chute; 6. Filter chamber; 7. Sewage chamber; 8. Filter screen; 9. Drain hole; 10. Fixing ring; 11. Rotating plate; 12. Water outlet; 13. Connecting rod; 14. Sewage pipe; 15. Sliding groove; 16. Assembly; 17. Rectangular groove; 18. Column rod; 19. Arc groove; 20. Toggle rod; 21. Sealing plate; 22. Rewinding wheel; 23. Rotating wheel; 24. Inner groove; 25. Sliding part; 26. Rack; 27. Meshing teeth. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] In the description of the invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the first embodiment of the present invention, as Figure 1 As shown, an automatic sewage discharge device for circulating water filtration is used to connect the filter body to the sewage of the filtration unit. The filter body includes a return pipe 1 and a filter pipe 2 located inside the return pipe 1. The return pipe 1 and the filter pipe 2 are round pipes and are sealed together. The wastewater drain pipe of the water unit is connected to the filter pipe 2. A clean water chamber 3 is formed between the filter pipe 2 and the return pipe 1. A clean water hole is opened on the clean water chamber 3 for water return or clean water discharge. A sleeve 4 is installed on the upper part of the filter body.

[0024] A wave-shaped groove 5 is formed on the inner wall of the sleeve 4. The wave-shaped groove 5 is a continuous reciprocating wave-shaped groove 5, which is composed of wave segments that gradually decrease in height and gradually increase in height. The sliding opening and closing device that cooperates with the wave-shaped groove 5 to close the filter tube 2 divides the sleeve 4 into a filter chamber 6 and a sewage discharge chamber 7. A filter screen 8 is attached to the inner wall of the filter chamber 6. An upwardly inclined drain hole 9 is formed on the filter chamber 6. The drain hole 9 is connected to the clean water chamber 3. After the sewage from the water unit enters the filter chamber 6, the impurities are discharged by the filter screen 8, and the clean water flows from the drain hole 9 to the clean water chamber 3.

[0025] When the above scheme is implemented, the sewage from the water-using unit enters the filter pipe 2 through the wastewater drain pipe. The sewage level gradually rises, and the impurities in the sewage are intercepted by the filter screen 8. The purified water flows into the water purification chamber 3 through the upward-sloping drain hole 9.

[0026] like Figures 2-3 As shown, the sliding opening and closing device includes a fixed ring 10 and a rotating plate 11 installed in the fixed ring 10. A water outlet hole 12 is opened in the middle of the rotating plate 11. Multiple connecting rods 13 are arranged in a ring along the fixed ring 10. The other end of the connecting rod 13 is fixedly connected to the wall of the sewage pipe 14. A through sliding groove 15 is opened on the connecting rod 13. There are assemblies 16 with the same number of connecting rods 13.

[0027] A rectangular groove 17 is made on the rotating plate 11. One end of the column rod 18 passes through the assembly 16 and is inserted into the rectangular groove 17, while the other end extends and is inserted into the sliding groove 15.

[0028] An arc-shaped groove 19 is formed on the wall of the fixed ring 10. The rotating plate 11 extends a lever 20. The lever 20 extends out from the arc-shaped groove 19 and is inserted into the wave-shaped sliding groove 5. The fixed ring 10 and the sewage pipe 14 are sealed by a sealing plate 21.

[0029] A fixed ring 10 is placed on the upper part of the return pipe 1 and the filter pipe 2. An annular groove that does not penetrate the inner wall of the fixed ring 10 is opened. A rotating plate 11 is installed in the annular groove and rotates. A water outlet 12 is opened in the middle of the rotating plate 11. The size of the water outlet 12 is the same as the inner diameter of the filter pipe 2. A drain pipe 14 is located above the water outlet 12. The drain pipe 14 is fixedly connected to the inner wall of the fixed ring 10 through multiple connecting rods 13. A rectangular groove 17 is opened on the upper surface of the rotating plate 11. There are the same number of column rods 18 as the assembly 16. After the column rods 18 penetrate the corresponding assembly 16, one end is inserted into the rectangular groove 17 and the other end is inserted into the sliding groove 15. After multiple assemblies 16 are assembled together, they cover the water outlet 12. An arc groove 19 is opened on the outer wall of the fixed ring 10. The arc groove 19 corresponds to the annular groove, so that part of the rotating plate 11 is exposed and the lever 20 extends. The lever 20 is inserted into the wave-shaped sliding groove 5.

[0030] During use, wastewater from the water-using unit is sent to filter pipe 2 through the wastewater discharge pipe. Alternatively, wastewater can be pumped to filter pipe 2. The wastewater level entering filter pipe 2 gradually rises with the water level in the water-using unit. Impurities in the wastewater are intercepted by filter screen 8, and the purified water enters the inclined drain hole 9. As the wastewater level rises, it flows from drain hole 9 into the purified water chamber 3. The purified water in the purified water chamber 3 is either discharged or returned to the water-using unit. When the wastewater volume is constant, filter screen 8 will gradually become partially clogged by impurities after filtration, reducing the amount of purified water discharged from drain hole 9. The water level in the filter pipe continues to rise until the filter chamber 6 is full. As impurities accumulate in the rising filter chamber 6, the internal pressure increases as wastewater continues to flow into the filter chamber 6, causing the fixed ring 10 of the sliding opening and closing device to move upward. During the upward movement of the fixed ring 10, the lever 20 moves from a low position to a high position in the wave-shaped sliding groove 5, causing the lever 20 to drive the rotating plate 11 to rotate. During the rotation of the rotating plate 11, the column rod 18 moves along the groove installed on it in the rectangular groove 17, causing the assembly 16 to rotate along the connected assembly, discharging wastewater from the outlet hole 12. At the same time, the stability of the rotation is ensured by the sliding of the upper part of the column rod 18 in the sliding groove 15.

[0031] After the assembly 16 rotates and the water outlet 12 is exposed, the sewage is discharged from the water outlet 12. During the process of the sewage being discharged into the sewage chamber 7, some impurities are flushed into the sewage chamber along with the liquid flow. It should be noted that the sewage chamber 7 can be opened with sewage holes according to the liquid flow rate. Some impurities are blocked and discharged after being discharged into the sewage chamber with the sewage. When the amount of clean water entering the clean water chamber 3 from the drain hole increases, the water level gradually decreases. During the descent, the lever 20 gradually decreases from high to low in the wave-shaped slide 5, causing the lever to drive the rotating plate to reset. The assembly resets and assembles to block the water outlet 12.

[0032] In the above technical solution, the assembly 16 consists of several fan-shaped sheet structures of the same shape, the number of which is the same as the number of connecting rods 13. Each assembly 16 is provided with a column rod 18. The two ends of the column rod 18 are respectively in sliding fit with the rectangular groove 17 and the sliding groove 15. Adjacent assemblies 16 are not connected to each other, but only when they are closed, their side edges are in contact with each other to form a complete disc, covering the water outlet 12. When the lever 20 moves along the wave-shaped sliding groove 5 and drives the rotating plate 11 to rotate, the groove wall of the rectangular groove 17 pushes the column rod 18 to move radially. The column rod 18 is simultaneously guided and constrained by the sliding groove 15. The radial movement of the column rod 18 drives the assembly 16 fixedly connected to it to move radially synchronously. When the column rod 18 moves radially outward, the assembly 16 spreads outward, the water outlet 12 is exposed, and sewage is discharged. When the column rod 18 moves radially inward, the assembly 16 gathers inward, the side edges are re-closed, and the water outlet 12 is sealed.

[0033] In a second embodiment of the invention, as Figures 1-5 As shown, an automatic sewage discharge device for circulating water filtration is used to connect the filter body to the sewage of the filtration unit. The filter body includes a return pipe 1 and a filter pipe 2 located inside the return pipe 1. The return pipe 1 and the filter pipe 2 are round pipes and are sealed together. The wastewater drain pipe of the water unit is connected to the filter pipe 2. A clean water chamber 3 is formed between the filter pipe 2 and the return pipe 1. A clean water hole is opened on the clean water chamber 3 for water return or clean water discharge. A sleeve 4 is installed on the upper part of the filter body.

[0034] A wave-shaped groove 5 is formed on the inner wall of the sleeve 4. The wave-shaped groove 5 is a continuous reciprocating wave-shaped groove 5, which is composed of wave segments that gradually decrease in height and gradually increase in height. The sliding opening and closing device that cooperates with the wave-shaped groove 5 to close the filter tube 2 divides the sleeve 4 into a filter chamber 6 and a sewage discharge chamber 7. A filter screen 8 is attached to the inner wall of the filter chamber 6. An upwardly inclined drain hole 9 is formed on the filter chamber 6. The drain hole 9 is connected to the clean water chamber 3. After the sewage from the water unit enters the filter chamber 6, the impurities are discharged by the filter screen 8, and the clean water flows from the drain hole 9 to the clean water chamber 3.

[0035] like Figures 2-3 As shown, the sliding opening and closing device includes a fixed ring 10 and a rotating plate 11 installed in the fixed ring 10. A water outlet hole 12 is opened in the middle of the rotating plate 11. Multiple connecting rods 13 are arranged in a ring along the fixed ring 10. The other end of the connecting rod 13 is fixedly connected to the wall of the sewage pipe 14. A through sliding groove 15 is opened on the connecting rod 13. There are assemblies 16 with the same number of connecting rods 13.

[0036] A rectangular groove 17 is made on the rotating plate 11. One end of the column rod 18 passes through the assembly 16 and is inserted into the rectangular groove 17, while the other end extends and is inserted into the sliding groove 15.

[0037] An arc-shaped groove 19 is formed on the wall of the fixed ring 10. The rotating plate 11 extends a lever 20. The lever 20 extends out from the arc-shaped groove 19 and is inserted into the wave-shaped sliding groove 5. The fixed ring 10 and the sewage pipe 14 are sealed by a sealing plate 21.

[0038] A fixed ring 10 is placed on the upper part of the return pipe 1 and the filter pipe 2. An annular groove that does not penetrate the inner wall of the fixed ring 10 is opened. A rotating plate 11 is installed in the annular groove and rotates. A water outlet 12 is opened in the middle of the rotating plate 11. The size of the water outlet 12 is the same as the inner diameter of the filter pipe 2. A drain pipe 14 is located above the water outlet 12. The drain pipe 14 is fixedly connected to the inner wall of the fixed ring 10 through multiple connecting rods 13. A rectangular groove 17 is opened on the upper surface of the rotating plate 11. There are the same number of column rods 18 as the assembly 16. After the column rods 18 penetrate the corresponding assembly 16, one end is inserted into the rectangular groove 17 and the other end is inserted into the sliding groove 15. After multiple assemblies 16 are assembled together, they cover the water outlet 12. An arc groove 19 is opened on the outer wall of the fixed ring 10. The arc groove 19 corresponds to the annular groove, so that part of the rotating plate 11 is exposed and the lever 20 extends. The lever 20 is inserted into the wave-shaped sliding groove 5.

[0039] During use, wastewater from the water-using unit is sent to filter pipe 2 through the wastewater discharge pipe. Alternatively, wastewater can be pumped to filter pipe 2. The wastewater level entering filter pipe 2 gradually rises with the water level in the water-using unit. Impurities in the wastewater are intercepted by filter screen 8, and the purified water enters the inclined drain hole 9. As the wastewater level rises, it flows from drain hole 9 into the purified water chamber 3. The purified water in the purified water chamber 3 is either discharged or returned to the water-using unit. When the wastewater volume is constant, filter screen 8 will gradually become partially clogged by impurities after filtration, reducing the amount of purified water discharged from drain hole 9. The water level in the filter pipe continues to rise until the filter chamber 6 is full. As impurities accumulate in the rising filter chamber 6, the internal pressure increases as wastewater continues to flow into the filter chamber 6, causing the fixed ring 10 of the sliding opening and closing device to move upward. During the upward movement of the fixed ring 10, the lever 20 moves from a low position to a high position in the wave-shaped sliding groove 5, causing the lever 20 to drive the rotating plate 11 to rotate. During the rotation of the rotating plate 11, the column rod 18 moves along the groove installed on it in the rectangular groove 17, causing the assembly 16 to rotate along the connected assembly, discharging wastewater from the outlet hole 12. At the same time, the stability of the rotation is ensured by the sliding of the upper part of the column rod 18 in the sliding groove 15.

[0040] After the assembly 16 rotates and the water outlet 12 is exposed, the sewage is discharged from the water outlet 12. During the process of the sewage being discharged into the sewage chamber 7, some impurities are flushed into the sewage chamber along with the liquid flow. It should be noted that the sewage chamber 7 can be opened with sewage holes according to the liquid flow rate. Some impurities are blocked and discharged after being discharged into the sewage chamber with the sewage. When the amount of clean water entering the clean water chamber 3 from the drain hole increases, the water level gradually decreases. During the descent, the lever 20 gradually decreases from high to low in the wave-shaped slide 5, causing the lever to drive the rotating plate to reset. The assembly resets and assembles to block the water outlet 12.

[0041] like Figure 4As shown, the drain holes 9 of the filter chamber 6 are arranged in a spacer pattern, and the filter screen 8 is placed according to the corresponding drain holes 9. The filter screen 8 passes through the drain holes 9 from bottom to top and then exits, so as to facilitate the replacement of the filter screen 8.

[0042] like Figure 4 and Figure 5 As shown, a winding wheel 22 driven by a motor is installed on the upper part of the filter body, and a rotating wheel 23 is installed on the lower part of the filter body. The filter screen 8 is led out from the rotating wheel 23 and passes through the drain hole 9 from bottom to top to be wound up by the winding wheel 22. Inner grooves 24 are respectively opened on the sleeve 4 and the filter tube 2. The sliding member 25 is installed between the inner grooves 24 of the square tube 4 and the filter tube 2 and slides. One side of the sliding member 25 is a rack 26, and the other side is opened with a wave-shaped groove 5.

[0043] The outer ring of the take-up reel 22 has meshing teeth 27, which mesh with the rack 26.

[0044] Although the sliding opening and closing device solves the problem of needing to stop the water-using unit or directly discharge the wastewater during the sewage discharge process, impurities that are difficult to be discharged with the water flow will inevitably adhere to the filter screen over time. Therefore, the further improvement of this application is as follows:

[0045] A motor-driven winding wheel 22 is added to wind up the sheet-type filter screen 8. Therefore, after the automatic sewage discharge device has been running for a period of time, it can be determined whether the filter screen 8 needs to be wound up and replaced based on the clean water return flow rate. When the clean water return flow rate decreases, the motor drives the winding wheel 22 to rotate. During the rotation of the winding wheel 22, the filter screen with adhering impurities is wound up, and the clean filter screen on the rotating wheel 23 replaces the original filter screen. At the same time, during the rotation of the meshing teeth 27 of the winding wheel 22, the sliding part 25 with rack 26 is driven to rise or fall, so that the lever 20 slides in the wave-shaped groove 5, and then the lever 20 swings in the arc groove to make the rotating plate 11 rotate. During the rotation, the assembly is opened to discharge sewage synchronously.

[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. An automatic sewage discharge device for circulating water filtration, used for connecting the filter body to the sewage of the filtration unit, characterized in that, The filter body includes a return pipe (1) and a filter pipe (2) located inside the return pipe (1). A clean water chamber (3) is formed between the filter pipe (2) and the return pipe (1). A sleeve (4) is installed on the upper part of the filter body. A wave-shaped groove (5) is opened on the inner wall of the sleeve (4), and a sliding opening and closing device that cooperates with the wave-shaped groove (5) to close the filter tube (2) divides the sleeve (4) into a filter chamber (6) and a sewage discharge chamber (7). A filter screen (8) is attached to the inner wall of the filter chamber (6), and an upwardly inclined drain hole (9) is opened on the filter chamber (6). The drain hole (9) is connected to the clean water chamber (3).

2. The automatic sewage discharge device for circulating water filtration according to claim 1, characterized in that: The sliding opening and closing device includes a fixed ring (10) and a rotating plate (11) installed in the fixed ring (10). A water outlet hole (12) is opened in the middle of the rotating plate (11). Multiple connecting rods (13) are arranged in a ring along the fixed ring (10). The other end of the connecting rod (13) is fixedly connected to the wall of the sewage pipe (14). A through sliding groove (15) is opened on the connecting rod (13). There are assemblies (16) with the same number of connecting rods (13). A rectangular groove (17) is made on the rotating plate (11). One end of the rod (18) passes through the assembly (16) and is inserted into the rectangular groove (17), while the other end extends and is inserted into the sliding groove (15). An arc groove (19) is opened on the pipe wall of the fixed ring (10), and the rotating plate (11) extends the lever (20). The lever (20) extends out from the arc groove (19) and inserts into the wave-shaped slide groove (5). The fixed ring (10) and the drain pipe (14) are sealed by the sealing plate (21).

3. The automatic sewage discharge device for circulating water filtration according to claim 1, characterized in that: The drain holes (9) of the filter chamber (6) are arranged in a spacer pattern, and the filter screen (8) is placed according to the corresponding drain holes (9).

4. The automatic sewage discharge device for circulating water filtration according to claim 1, characterized in that: The filter screen (8) passes through the drain hole (9) from bottom to top and then exits, making it easy to replace the filter screen (8).

5. The automatic sewage discharge device for circulating water filtration according to claim 1, characterized in that: The upper part of the filter body is equipped with a winding wheel (22) driven by a motor, and the lower part of the filter body is equipped with a rotating wheel (23). The filter screen (8) is led out from the rotating wheel (23) and passed through the drain hole (9) from bottom to top to be wound up by the winding wheel (22).

6. The automatic sewage discharge device for circulating water filtration according to claim 5, characterized in that: The sleeve (4) and the filter tube (2) are respectively provided with inner grooves (24), and the sliding member (25) is installed between the inner grooves (24) of the sleeve (4) and the filter tube (2) and slides. One side of the sliding member (25) is a rack (26), and the other side is provided with a wave-shaped sliding groove (5). The outer ring of the take-up reel (22) is a meshing tooth (27), which meshes with the rack (26).

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