Non-return device for water treatment

Abstract

The invention discloses a non-return device for water treatment, and relates to the technical field, the non-return device comprises a pipeline, the side face of the pipeline is connected with a conical pipe in a penetrating mode, the inner diameter of the conical pipe is larger than that of the pipeline, the pipeline and the conical pipe are internally and movably connected with a non-return ball, and the diameter of the non-return ball is larger than the inner diameter of the pipeline and smaller than or equal to the inner diameter of the conical pipe. When no liquid is pumped into the liquid inlet end of the pipeline, the check ball blocks the penetrating joint of the pipeline and the conical pipe under the action of gravity. When no liquid is pumped into the liquid inlet end of the pipeline, the check ball blocks the penetrating joint of the pipeline and the conical pipe under the action of gravity, liquid at the liquid outlet end of the pipeline is prevented from flowing back, and when friction force between the check ball and the inner wall of the conical pipe is increased due to high-viscosity liquid and the check ball cannot completely fall back, the check ball can be pushed into the conical pipe through the action of the pushing mechanism. And the check ball is pushed to plug the joint of the pipeline and the conical pipe, so that the sealing performance can be ensured, and the check effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a non-return device for water treatment. Background Art

[0002] The core function of the check device for water treatment is to prevent water backflow and protect the safety of pipelines, equipment and water sources. Its application scenarios cover a wide range of fields including water supply, drainage, industrial processing, construction, agriculture, etc.

[0003] A ball check valve features a built-in rubber ball that moves up and down a slideway in the valve body to prevent reverse flow. When water is supplied, the ball is pushed to the top, allowing water to flow through the valve body. When water is shut off, the ball closes the flow channel through its own weight. This check valve has a simple structure, unobstructed flow, and excellent flow performance. It also minimizes head loss compared to other check valves and eliminates water hammer when closed.

[0004] When the pump stops, under normal circumstances, the rubber ball falls back under the action of gravity, blocking the pipe opening and thus preventing the medium from flowing back. However, when the flowing medium in the pipe is a high-viscosity medium, such as syrup, the high-viscosity medium will adhere to the conical cavity and the surface of the rubber ball. The high-viscosity medium will increase the friction between the rubber ball and the inner wall of the conical cavity during the falling process, and may even prevent the rubber ball from falling back completely and the sealing is not tight, which will affect the non-return effect. Therefore, the present application proposes a non-return device for water treatment to solve the above-mentioned problems. Summary of the Invention

[0005] The present invention provides a water treatment check device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A water treatment check device includes a pipeline, a tapered tube penetrating the side of the pipeline, the inner diameter of the tapered tube being larger than the inner diameter of the pipeline, and a check ball movably connected inside the pipeline and the tapered tube, the diameter of the check ball being larger than the inner diameter of the pipeline and less than or equal to the inner diameter of the tapered tube.

[0008] When no liquid is pumped into the liquid inlet end of the pipeline, the check ball forms a blockage on the pipeline and the conical tube through-connection under the action of gravity to prevent liquid backflow at the liquid outlet end of the pipeline.

[0009] A propulsion mechanism is provided inside the check ball. When the friction between the check ball and the inner wall of the tapered tube increases, causing the check ball to be unable to fall back completely, the propulsion mechanism can be used to push the check ball to form a blockage at the connection between the pipe and the tapered tube.

[0010] A further improvement of the technical solution of the present invention is that the propulsion mechanism includes a telescopic push rod fixedly connected to the inside of the conical tube, and the output end of the telescopic push rod is fixedly connected to a top plate. When the check ball cannot fall completely back by gravity, the telescopic push rod can be used to drive the top plate to push the check ball back to the connection between the pipe and the conical tube to form a blockage.

[0011] A further improvement of the technical solution of the present invention is that a magnetic block is fixedly connected to the inner wall of the pipe near the connection between the pipe and the tapered pipe, the check ball is made of magnetically attracted metal, and the curvature of the magnetic block fits the outer surface of the check ball.

[0012] A further improvement of the technical solution of the present invention is that an abutment ring is fixedly connected to the inner wall of the pipe near the connection between the pipe and the tapered pipe, and the curvature of the abutment ring fits the outer surface of the check ball.

[0013] A further improvement of the technical solution of the present invention is that: a slider is fixedly connected to the outer surface of the check ball, a slide groove is provided on the inner wall of the conical tube, the outer surface of the slider is movably connected to the inner wall of the slide groove, a limiting slide groove is provided on the inner wall of the conical tube, and a trigger mechanism connected to the slider is provided inside the limiting slide groove.

[0014] A further improvement of the technical solution of the present invention is that: the trigger mechanism includes a connecting rod fixedly connected to the slider, a plurality of pressure sensors are evenly distributed on the inner wall of the limiting slide, and one end of the connecting rod extending to the inside of the limiting slide is fixedly connected to an elastic abutment assembly, the falling distance of the check ball corresponds to the sliding distance of the elastic abutment assembly in the limiting slide, and the position of the check ball is confirmed by the pressure signal generated by the pressure sensor.

[0015] A further improvement of the technical solution of the present invention is that: the elastic abutment component is a connecting plate fixedly connected to the connecting rod, a connecting slide is fixedly connected to the connecting plate, one end of the connecting slide is movably connected to an abutment cover, a spring is fixedly connected between the abutment cover and the connecting plate, the spring is in a compressed state, and the abutment cover exerts an extrusion effect on the pressure sensor to generate a pressure signal.

[0016] A further improvement of the technical solution of the present invention is that a scraper ring is fixedly connected to the outer surface of the output end of the telescopic push rod close to the top plate, and the scraper ring is movably connected to the inner wall of the tapered tube.

[0017] A further improvement of the technical solution of the present invention is that the outer surface of the check ball is covered with a rubber sleeve.

[0018] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art:

[0019] 1. The present invention provides a non-return device for water treatment. When no liquid is pumped into the liquid inlet end of the pipeline, the non-return ball forms a blockage on the connection between the pipeline and the tapered tube under the action of gravity to prevent the liquid from flowing back at the liquid outlet end of the pipeline. When the friction between the non-return ball and the inner wall of the tapered tube increases due to the high viscosity liquid, making it impossible for the non-return ball to fall back completely, the propulsion mechanism can be used to push the non-return ball to form a blockage on the connection between the pipeline and the tapered tube, thereby ensuring the tightness of the blockage and the non-return effect.

[0020] 2. The present invention provides a check device for water treatment. When the check ball falls back, the elastic abutment assembly is driven by the connecting rod to slide along the inner wall of the limiting slide groove. The sliding distance of the check ball is consistent with the sliding distance of the elastic abutment assembly, and a pressure signal is generated for the pressure sensor. When the pressure sensor located at the bottom detects that a pressure signal is transmitted, the position of the check ball can fall back to its original position under the action of gravity and the magnetic block. When the previous pressure sensor generates a pressure signal, the next pressure sensor does not generate a pressure signal, and the next pressure sensor does not include the bottom one, that is, the surface check ball stops at a certain place and does not continue to fall. At this time, the telescopic push rod can be started by the action of the main control board to push the check ball.

[0021] 3. The present invention provides a check device for water treatment. After the check ball falls back to its original position, the scraper ring can be pushed by the telescopic push rod to slide along the inner wall of the tapered tube, scraping the inner wall of the tapered tube to scrape off high-viscosity media, such as syrup. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 3 Schematic diagram of the cross-sectional structure of the limiting chute of the present invention;

[0025] Figure 4 This is a schematic cross-sectional view of the present invention when the scraper ring pushes the check ball back;

[0026] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the check ball of the present invention.

[0028] In the figure: 1. Pipe; 2. Conical tube; 3. Check ball; 4. Slider; 5. Slide; 6. Abutment ring; 7. Magnetic block; 8. Top plate; 9. Telescopic push rod; 10. Scraper ring; 11. Connecting rod; 12. Limiting slide; 13. Connecting plate; 14. Connecting slide column; 15. Abutment cover; 16. Spring; 17. Pressure sensor; 18. Rubber sleeve. DETAILED DESCRIPTION

[0029] The present invention is described in further detail below in conjunction with the embodiments:

[0030] Example:

[0031] like Figure 1-6 As shown, the present invention provides a non-return device for water treatment, comprising a pipeline 1, a tapered tube 2 penetrating the side of the pipeline 1, the tapered tube 2 being installed slightly tilted on the side of the pipeline 1, and being internally connected, and the upper and lower ends of the device are connected to the liquid medium transmission network through flanges, and are usually installed vertically with the liquid inlet end at the bottom, the inner diameter of the tapered tube 2 being larger than the inner diameter of the pipeline 1, and a non-return ball 3 being movably connected inside the pipeline 1 and the tapered tube 2, and the diameter of the non-return ball 3 being larger than the inner diameter of the pipeline 1 and less than or equal to the inner diameter of the tapered tube 2.

[0032] When no liquid is pumped into the liquid inlet end of the pipeline 1, the check ball 3 forms a blockage on the connection between the pipeline 1 and the tapered tube 2 under the action of gravity to prevent the liquid from flowing back from the liquid outlet end of the pipeline 1.

[0033] A propulsion mechanism is provided inside the check ball 3. When the friction between the check ball 3 and the inner wall of the tapered tube 2 increases due to the high viscosity liquid, making it impossible for the check ball 3 to fall back completely, the propulsion mechanism can be used to push the check ball 3 to the connection between the pipeline 1 and the tapered tube 2 to form a seal, thereby ensuring the tightness of the seal and the check effect.

[0034] Furthermore, the propulsion mechanism includes a telescopic push rod 9 fixedly connected to the inside of the conical tube 2. The telescopic push rod 9 is a prior art and can be driven electrically or pneumatically. The output end of the telescopic push rod 9 is fixedly connected to a top plate 8. When the check ball 3 cannot fall completely back by gravity, the telescopic push rod 9 can drive the top plate 8 to push the check ball 3 back to the connection between the pipe 1 and the conical tube 2 to form a blockage.

[0035] Furthermore, a magnetic block 7 is fixedly connected to the inner wall of the pipe 1 near the connection between the pipe 1 and the conical pipe 2. The check ball 3 is made of a metal that can be magnetically attracted, and the curvature of the magnetic block 7 fits the outer surface of the check ball 3. When the check ball 3 falls back to a certain distance, the attraction of the magnetic block 7 can make the check ball 3 quickly return to its position to form a blockage. When the check ball 3 cannot fall back to the magnetic attraction distance due to increased friction, the attraction force of the magnetic block 7 cannot make the check ball 3 continue to fall back, that is, the check ball 3 needs to be pushed to continue to fall back by the propulsion mechanism.

[0036] Furthermore, an abutment ring 6 is fixedly connected to the inner wall of the pipe 1 near the connection between the pipe 1 and the conical pipe 2. The curvature of the abutment ring 6 fits with the outer surface of the check ball 3. The abutment ring 6 is made of soft material, so that the check ball 3 fits tightly with the abutment ring 6 when it falls back, thereby ensuring the sealing effect.

[0037] Furthermore, a slider 4 is fixedly connected to the outer surface of the check ball 3, and a main control board is installed on the conical tube 2. The main control board is a prior art and is used to control the opening and closing of the telescopic push rod 9. A slide groove 5 is provided on the inner wall of the conical tube 2, and the outer surface of the slider 4 is movably connected to the inner wall of the slide groove 5. A limiting slide groove 12 is provided on the inner wall of the conical tube 2, and a trigger mechanism connected to the slider 4 is provided inside the limiting slide groove 12. When the check ball 3 stops at a certain place on the inner wall of the conical tube 2 due to increased friction, the telescopic push rod 9 is started through the action of the trigger mechanism to produce a propulsion effect on the check ball 3.

[0038] Furthermore, the trigger mechanism includes a connecting rod 11 fixedly connected to the slider 4, and a plurality of pressure sensors 17 are evenly distributed on the inner wall of the limiting slide 12. One end of the connecting rod 11 extending to the inside of the limiting slide 12 is fixedly connected to an elastic abutment component. The falling distance of the check ball 3 corresponds to the sliding distance of the elastic abutment component in the limiting slide 12. The position of the check ball 3 is confirmed by the pressure signal generated by the pressure sensor 17. When the check ball 3 falls back, the elastic abutment component is driven to slide along the inner wall of the limiting slide 12 through the connecting rod 11. The sliding distance of the check ball 3 corresponds to the sliding distance of the elastic abutment component in the limiting slide 12. The sliding distance of the abutment assembly is consistent, and a pressure signal is generated for the pressure sensor 17. When the pressure sensor 17 at the bottom detects that a pressure signal is transmitted, the position of the check ball 3 can fall back to its original position under the action of gravity and the magnetic block 7. When the previous pressure sensor 17 generates a pressure signal, the next pressure sensor 17 does not generate a pressure signal, and the next pressure sensor 17 does not include the bottom one, that is, the surface check ball 3 stops somewhere and does not continue to fall. At this time, the telescopic push rod 9 can be started by the action of the main control panel to push the check ball 3.

[0039] Furthermore, the elastic abutment assembly includes a connecting plate 13 fixedly connected to the connecting rod 11, a connecting slide 14 fixedly connected to the connecting plate 13, and an abutment cover 15 movably connected to one end of the connecting slide 14. A spring 16 is fixedly connected between the abutment cover 15 and the connecting plate 13, and the spring 16 is in a compressed state. The abutment cover 15 exerts a force on the pressure sensor 17, thereby generating a pressure signal. As the check ball 3 moves, the elastic abutment assembly moves along the limiting slide groove 12, and produces an squeezing effect on the pressure sensors 17 at different positions. The pressure sensors 17 at different positions generate pressure signals, thereby judging whether the check ball 3 can return to its original position, that is, whether it is necessary to start the telescopic push rod 9 to push the check ball 3.

[0040] Furthermore, a scraper ring 10 is fixedly connected to the outer surface of the output end of the telescopic push rod 9 near the top plate 8, and the scraper ring 10 is movably connected to the inner wall of the conical tube 2. After the check ball 3 returns to its original position, the scraper ring 10 can be pushed by the telescopic push rod 9 to slide along the inner wall of the conical tube 2, scraping the inner wall of the conical tube 2 to scrape off high-viscosity media, such as syrup.

[0041] Furthermore, the outer surface of the check ball 3 is covered with a rubber sleeve 18 to prevent rust and ensure the check effect.

Claims

1. A water treatment check device, comprising a pipe (1), characterized in that: A tapered tube (2) is connected through the side of the pipe (1), the inner diameter of the tapered tube (2) is larger than the inner diameter of the pipe (1), and a check ball (3) is movably connected inside the pipe (1) and the tapered tube (2), the diameter of the check ball (3) is larger than the inner diameter of the pipe (1) and smaller than or equal to the inner diameter of the tapered tube (2); When no liquid is pumped into the liquid inlet end of the pipeline (1), the check ball (3) forms a blockage on the connection between the pipeline (1) and the tapered tube (2) under the action of gravity, thereby preventing the liquid from flowing back from the liquid outlet end of the pipeline (1); A propulsion mechanism is provided inside the check ball (3). When the friction between the check ball (3) and the inner wall of the tapered tube (2) increases, causing the check ball (3) to be unable to fall back completely, the propulsion mechanism can be used to push the connection between the check ball (3) and the pipeline (1) and the tapered tube (2) to form a blockage.

2. A water treatment check device according to claim 1, characterized in that: The propulsion mechanism comprises a telescopic push rod (9) fixedly connected to the inside of the conical tube (2); the output end of the telescopic push rod (9) is fixedly connected to a top plate (8); when the check ball (3) cannot fall completely back due to gravity, the telescopic push rod (9) can drive the top plate (8) to push the check ball (3) back to the connection between the pipeline (1) and the conical tube (2) to form a blockage.

3. A water treatment check device according to claim 1, characterized in that: A magnetic block (7) is fixedly connected to the inner wall of the pipe (1) near the connection between the pipe (1) and the tapered pipe (2); the check ball (3) is made of a metal that can be attracted by magnets, and the curvature of the magnetic block (7) fits the outer surface of the check ball (3).

4. A water treatment check device according to claim 1, characterized in that: An abutment ring (6) is fixedly connected to the inner wall of the pipe (1) near the connection between the pipe (1) and the tapered pipe (2), and the curvature of the abutment ring (6) fits the outer surface of the check ball (3).

5. The water treatment check device according to claim 1, characterized in that: A slider (4) is fixedly connected to the outer surface of the check ball (3), a slide groove (5) is provided on the inner wall of the tapered tube (2), the outer surface of the slider (4) is movably connected to the inner wall of the slide groove (5), a limiting slide groove (12) is provided on the inner wall of the tapered tube (2), and a trigger mechanism connected to the slider (4) is provided inside the limiting slide groove (12).

6. A water treatment check device according to claim 5, characterized in that: The trigger mechanism comprises a connecting rod (11) fixedly connected to the slider (4); a plurality of pressure sensors (17) are evenly distributed on the inner wall of the limiting chute (12); one end of the connecting rod (11) extending into the interior of the limiting chute (12) is fixedly connected to an elastic abutment assembly; the falling distance of the check ball (3) corresponds to the sliding distance of the elastic abutment assembly in the limiting chute (12); and the position of the check ball (3) is confirmed by the pressure signal generated by the pressure sensor (17).

7. A water treatment check device according to claim 6, characterized in that: The elastic abutment assembly comprises a connecting plate (13) fixedly connected to the connecting rod (11); a connecting slide (14) is fixedly connected to the connecting plate (13); one end of the connecting slide (14) is movably connected to an abutment cover (15); a spring (16) is fixedly connected between the abutment cover (15) and the connecting plate (13); the spring (16) is in a compressed state and exerts an extrusion effect on the pressure sensor (17) through the action of the abutment cover (15), thereby generating a pressure signal.

8. The water treatment check device according to claim 2, characterized in that: A scraper ring (10) is fixedly connected to the outer surface of the output end of the telescopic push rod (9) close to the top plate (8), and the scraper ring (10) is movably connected to the inner wall of the conical tube (2).

9. The water treatment check device according to claim 1, characterized in that: The outer surface of the check ball (3) is covered with a rubber sleeve (18).

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