Anti-backflow self-operated balance flow combination valve

Abstract

The invention discloses an anti-backflow self-operated balance flow combination valve, and relates to the technical field of valves, the anti-backflow self-operated balance flow combination valve comprises a valve body, the valve body comprises a water inlet end and a water outlet end, the anti-backflow self-operated balance flow combination valve further comprises a flow valve, the two ends of the flow valve are provided with an opening and a water outlet hole respectively, and the side wall of the flow valve is provided with at least one opening hole; the valve element is arranged in the flow valve in a sliding mode, the valve element is connected with the flow valve through a third spring, and the size of the opening can be changed through sliding of the valve element; water at the water inlet end can impact the valve element through the opening, and the water at the water inlet end can flow into the flow valve through the open hole and then flow into the water outlet end through the water outlet hole. When the water inlet pressure of the water flow pipeline changes, the device can be automatically adjusted, the constant flow of the pipeline is achieved, and the device has the advantages of being high in overall adjusting precision, long in service life, simple in structure, convenient to manufacture and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly to an anti-backflow self-acting balanced flow combination valve. Background Art

[0002] A constant flow valve is a regulating valve with a constant flow function. The working principle of the constant flow valve is to use a differential pressure control device to stabilize the differential pressure before and after the flow regulating device. When the differential pressure before and after the valve is greater than the constant flow starting value, the flow rate through the valve no longer changes with the differential pressure but remains constant. Constant flow valves are widely used in multiple fields. Through their unique design and functions, constant flow valves provide stable flow control solutions for various industrial and scientific research applications.

[0003] Most of the existing constant flow valves adopt diaphragm-type valve cores made of rubber materials. Due to the elasticity of the diaphragm itself, when the water pressures at the inlet and outlet are different, the diaphragm changes the size of the water outlet within its elastic range, thereby maintaining a constant flow rate. However, constant flow valves are generally used for a long time, which not only easily causes the valve core itself to lose elasticity or the elasticity to weaken, thus affecting the accuracy, but also the rubber diaphragm is prone to aging, resulting in a short service life. At the same time, conventional constant flow valves do not have an anti-backflow function, and backflow may occur when the differential pressure in the valve body is too large. Summary of the Invention

[0004] In order to solve the problems existing in the above-mentioned prior art, an anti-backflow self-acting balanced flow combination valve is provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: The present invention provides an anti-backflow self-acting balanced flow combination valve, including a valve body. The valve body includes a water inlet end and a water outlet end, and further includes, A flow valve, with an opening and a water outlet hole respectively formed at both ends of the flow valve, and at least one opening formed on the side wall of the flow valve; A valve core slidably arranged in the flow valve. The valve core is connected to the flow valve through a third spring, and the sliding of the valve core can change the size of the opening; The water at the water inlet end can impact the valve core through the opening, and the water at the water inlet end can flow into the flow valve through the opening, and then flow into the water outlet end through the water outlet hole.

[0006] Preferably, one end of the valve core is a closed end, which is close to the opening. The third spring is located inside the valve core. One end of the third spring is connected to the closed end, and the other end is connected to the flow valve.

[0007] Preferably, as the impact force of the water in the opening on the valve core increases, the third spring can undergo corresponding deformation, thereby making the opening smaller and achieving self-balancing of the flow rate.

[0008] Preferably, a valve flap for realizing the anti-backflow function is slidably arranged inside the water inlet end, and the valve flap is connected to the valve body through a second spring.

[0009] Preferably, the valve body is communicated with a plurality of PT components, and the PT components are equipped with temperature and pressure monitoring mechanisms.

[0010] Preferably, a sphere rotatably connected to the valve body is arranged inside the water outlet end, a water passing channel is formed inside the sphere, the valve body is rotatably connected with a handle, and the handle can drive the sphere to rotate, so as to realize the control of the water output.

[0011] Preferably, the valve body is fixedly connected with a scale plate, an arc-shaped hole is formed in the scale plate, the handle is in threaded connection with a bolt, and the bolt can penetrate through the arc-shaped hole and then abut against the surface of the scale plate.

[0012] Preferably, the valve body is rotatably connected with a scale plate, the sphere is fixedly connected with a ball rod, the ball rod is rotatably connected with a small valve rod, the small valve rod is fixedly connected with the handle, and the scale plate is fixedly connected with a scale rod.

[0013] Preferably, a cavity is formed in the valve body, a piston is movably connected inside the cavity, the piston is slidably sleeved on the small valve rod, upper grooves and lower grooves are respectively formed in the scale rod and the ball rod, protrusions capable of sliding into the upper grooves or the lower grooves are respectively fixedly connected to the upper and lower ends of the piston, and a drain plug is in threaded connection inside the cavity.

[0014] Preferably, a compression spring is connected to the lower end of the piston, the lower end of the compression spring abuts against the valve body, a communicating pipe is formed in the valve body, one end of the communicating pipe is communicated with the water outlet end, and the other end of the communicating pipe is communicated with the cavity above the piston; a water stop plug capable of closing the communicating pipe is slidably connected to the valve body, the water stop plug is connected to the valve body through a first spring, and the water stop plug can move under the magnetic force of a magnet, so as to open the communicating pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. A flow valve fixed in the valve body through a support frame is arranged in the present application. The water at the water inlet end can impact the valve core through the opening, and the water at the water inlet end can flow into the flow valve through the opening hole and then flow into the water outlet end through the water outlet hole. When the impact force of the water in the opening on the valve core increases, the third spring can be deformed correspondingly, so that the opening hole becomes smaller, realizing the self-balance of the flow rate. When the water inlet pressure of the water flow pipeline changes, it can be automatically adjusted to realize the constancy of the pipeline flow rate, and it has the advantages of high overall adjustment accuracy, long service life, simple structure, and convenient manufacturing.

[0016] 2. This application is provided with a handle. The water stop plug is driven to move by a magnet, and the connecting pipe is opened. At this time, the water in the valve body impacts the piston through the flow pipe. The piston cooperates with the cue. At this time, when the handle rotates, the sphere can be driven to rotate to adjust the flow rate. When the magnet moves to one side, the water stop plug closes the connecting pipe. By opening the drain valve, the compression spring drives the piston to cooperate with the dial. At this time, the handle can be rotated arbitrarily without changing the flow rate. When the handle rotates, the dial can be driven to rotate simultaneously. By using the water pressure method, continuous constant pressure can be provided, and the overall structure is simpler and more ingenious, facilitating processing without complex cooperation, and enabling the cue part to form a relatively airtight space, making the overall valve more airtight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where: Figure 1 is the overall three-dimensional view of the present invention; Figure 2 is the overall front view in Embodiment 1; Figure 3 is the three-dimensional structure of the flow valve part in the present invention Figure 1 ; Figure 4 is the three-dimensional structure of the flow valve part in the present invention Figure 2 ; Figure 5 is the three-dimensional structure of the flow valve part in the present invention Figure 3 ; Figure 6 is the three-dimensional structure of the flow valve part in the present invention Figure 4 ; Figure 7 is the three-dimensional view of the valve core part structure in the present invention; Figure 8 is the overall front view in Embodiment 2; Figure 9 is Figure 8 the enlarged view of the structure of part A in Figure 10 is Figure 8 the top view of the structure of the handle part in

[0018] Description of the reference numerals: 1. Valve body; 2. Ball rod; 3. Lower groove; 4. Compression spring; 5. Piston; 6. Protrusion; 7. Drain plug; 8. Scale rod; 9. Dial; 10. Handle; 11. Pointer; 12. Connecting pipe; 13. Water stop plug; 14. First spring; 15. Magnet; 16. Small valve rod; 17. Sphere; 18. Second spring; 19. Valve flap; 20. Sealing ring; 21. Bolt; 22. PT assembly; 23. Flow valve; 24. Valve core; 25. Support frame; 26. Opening; 27. Water outlet hole; 28. Third spring; 29. Small hole; 30. Water inlet end; 31. Water outlet end; 32. Opening; 33. Cavity. Detailed implementation manners

[0019] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0020] Embodiment 1 As Figures 1-7 shown, this embodiment provides a non-return self-acting balanced flow combination valve, including a valve body 1. The valve body 1 includes a water inlet end 30 and a water outlet end 31. A plurality of sealing rings 20 are provided at the joints of the water inlet end 30 and the water outlet end 31 with the valve body 1. The water inlet end 30 and the water outlet end 31 are detachably connected to the water inlet pipe and the water outlet pipe respectively. It also includes a flow valve 23. Openings 32 and a plurality of water outlet holes 27 are respectively formed at both ends of the flow valve 23. At least one opening 26 is formed on the side wall of the flow valve 23. The flow valve 23 is arranged in an inclined direction, so as to better facilitate the water from the water inlet end 30 to enter the water outlet end 31 through the flow valve 23; a valve core 24 slidably arranged in the flow valve 23. The valve core 24 is connected to the flow valve 23 through a third spring 28. The sliding of the valve core 24 can change the size of the opening 26. A plurality of openings 26 can be provided according to actual needs, and the plurality of openings 26 are all arranged at the same height, so that when the valve core 24 slides, the sizes of the plurality of openings 26 can be adjusted simultaneously; The water in the water inlet end 30 can flow into the flow valve 23 in two ways. Specifically, the water in the water inlet end 30 can impact the valve core 24 through the opening 32, thereby driving the valve core 24 to slide in the flow valve 23 and realizing the change of the size of the opening 26. The water in the water inlet end 30 can flow into the flow valve 23 through the opening 26, and then flow into the water outlet end 31 through the water outlet hole 27.

[0021] One end of the valve core 24 is a closed end, which is close to the opening 32. Thus, the water flowing into the flow valve 23 through the opening 32 only impacts the valve core 24 and will not jump over the valve core 24. The other end of the valve core 24 is recessed inward, and the third spring 28 is located in the recess of the valve core 24. One end of the third spring 28 is connected to the closed end, and the other end is connected to the flow valve 23.

[0022] The increase in the impact force of the water in the opening 32 on the valve core 24 can cause the third spring 28 to undergo corresponding deformation, thereby making the opening 26 smaller and achieving self - balance of the flow rate. When the impact force on the valve core 24 decreases, the third spring 28 can reset the valve core 24, thereby making the opening 26 larger and achieving self - balance of the flow rate.

[0023] The valve body 1 is also thread - connected with a valve cover, which is located on one side of the flow valve 23. The valve body 1 is fixedly connected with a support frame 25, and the other end of the support frame 25 is fixedly connected with the flow valve 23. The setting of the support frame 25 can make the flow valve 23 be suspended and fixed in the valve body 1, thus facilitating the water in the water inlet end 30 to enter the water outlet end 31 through the flow valve 23.

[0024] One end of the flow valve 23 close to the water outlet hole 27 is also provided with small holes 29. The number of the small holes 29 corresponds to the number of the openings 26. There are two setting methods for the small holes 29. When it is in Method 1, as Figure 5 shown, Figure 5 is the three - dimensional structure of the flow valve part in the present invention Figure 3 , the small holes 29 are not communicated with the openings 26 and are located on one side of the openings 26; when it is in Method 2, as Figure 6 shown, Figure 6 is the three - dimensional structure of the flow valve part in the present invention Figure 4 , the small holes 29 are communicated with the openings 26 and are located on one side of the openings 26.

[0025] A valve flap 19 for realizing the anti - backflow function is slidably arranged in the water inlet end 30. The valve flap 19 is connected to the valve body 1 through a second spring 18. The second spring 18 is sleeved on the valve flap 19. The left end of the second spring 18 is connected to the valve body 1, and the right end of the second spring 18 is connected to the valve flap 19. The water flow in the water inlet end 30 can drive the valve flap 19 to move to the right to realize the passage of the water flow. The setting of the valve flap 19 can realize anti - backflow.

[0026] The valve body 1 is communicated with a plurality of PT components 22. The PT components 22 are self - sealing structures. By unscrewing the cap of the PT component 22 to connect a probe or a thermometer, the temperature and pressure of the medium in the valve body 1 can be measured in real time, so as to judge the medium flow situation in the valve body 1.

[0027] Inside the water outlet end 31, there is a sphere 17 rotatably connected to the valve body 1. A water passage is provided inside the sphere 17. The valve body 1 is rotatably connected to a handle 10. The handle 10 and the sphere 17 are fixedly connected. The handle 10 can drive the sphere 17 to rotate, thereby adjusting the opening degree of the water passage and realizing the control of the water output.

[0028] The valve body 1 is fixedly connected with a dial 9. The dial 9 is provided with an arc-shaped hole. The handle 10 is threadedly connected with a bolt 21. The bolt 21 can pass through the arc-shaped hole and abut against the surface of the dial 9. The handle 10 is fixedly connected with a pointer 11. The pointer 11 cooperates with the dial 9 to realize the determination of the opening degree at this time.

[0029] By loosening the bolt 21, at this time the handle 10 can drive the sphere 17 to rotate. At the same time, the bolt 21 can move freely in the arc-shaped hole. The pointer 11 realizes the indication of the opening degree at this time. By tightening the bolt 21, the bolt 21 can abut against the surface of the dial 9, thereby realizing the relative limit of the handle 10. At this time, the handle 10 cannot rotate freely.

[0030] Embodiment 2 Reference appendix Figures 8-10 The other structures are the same as those in Embodiment 1. The difference is that in this embodiment, considering the accidental touch of the handle during use and the problem that the movement space of the handle is limited in some scenarios.

[0031] The valve body 1 is rotatably connected with a dial 9. The dial 9 is arranged on the outer surface of the valve body 1. The sphere 17 is fixedly connected with a ball rod 2. A small cavity is provided inside the ball rod 2. A small valve rod 16 is rotatably connected inside the small cavity. The small cavity realizes the limit of the movement of the small valve rod 16, so that the small valve rod 16 can only rotate. The small valve rod 16 and the handle 10 are fixedly connected. The handle 10 is fixedly connected with a pointer 11. The pointer 11 cooperates with the dial 9 to realize the determination of the opening degree at this time.

[0032] The valve body 1 is provided with a cavity 33. A piston 5 is movably connected inside the cavity 33. The piston 5 can slide or rotate inside the cavity 33. A water storage space is formed above the piston 5, and a waterless space is formed below the piston 5. The piston 5 is slidably sleeved on the small valve rod 16. The piston 5 can only slide along the surface of the small valve rod 16. When the small valve rod 16 rotates, it can drive the piston 5 to rotate simultaneously.

[0033] The dial 9 is fixedly connected with a scale rod 8. The cross-section of the scale rod 8 is a hollow cylinder. The scale rod 8 and the valve body 1 are rotatably connected. A sealing ring 20 is arranged at the connection between the scale rod 8 and the valve body 1. The lower end of the scale rod 8 extends into the cavity 33 and is located in the water storage space above the piston 5.

[0034] The lower end of the scale rod 8 is provided with an upper groove, and the upper end of the cue 2 is provided with a lower groove 3. The upper and lower ends of the piston 5 are respectively fixedly connected with protrusions 6 that can slide into the upper groove or the lower groove 3. The protrusions 6 are conical, so as to facilitate sliding into the corresponding grooves. There are several protrusions 6 and grooves, so as to better facilitate the cooperation between the protrusions 6 and the grooves.

[0035] The lower end of the piston 5 is connected with a compression spring 4. The compression spring 4 is located in the waterless space below the piston 5. The compression spring 4 is sleeved on the cue 2. The lower end of the compression spring 4 abuts against the valve body 1, and the compression spring 4 can slide along the surface of the valve body 1. A drain plug 7 is threadedly connected in the cavity 33. The drain plug 7 is located in the water storage space above the piston 5. By screwing out the drain plug 7, the elastic force of the compression spring 4 can make the piston 5 move upward, so that the water in the water storage space is discharged, and finally the protrusion 6 of the piston 5 can slide into the upper groove, so that when the handle 10 rotates, it can drive the scale disk 9 to rotate at the same time.

[0036] The valve body 1 is provided with a communicating pipe 12. One end of the communicating pipe 12 is communicated with the water outlet end 31, and the other end of the communicating pipe 12 is communicated with the cavity 33 above the piston 5. In order to better facilitate the water in the valve body 1 to flow into the communicating pipe 12, the end of the communicating pipe 12 connected to the water outlet end 31 can be inclined. When there is water flow in the valve body 1, the water flow can enter the cavity 33 through the communicating pipe 12, so as to press down the piston 5, and the protrusion 6 of the piston 5 can slide into the lower groove 3, so that when the handle 10 rotates, it can drive the sphere 17 to rotate.

[0037] The valve body 1 is slidably connected with a water stop plug 13 that can close the communicating pipe 12. The water stop plug 13 is connected with the valve body 1 through a first spring 14. The upper end of the first spring 14 is connected with the valve body 1, and the lower end of the first spring 14 is connected with the water stop plug 13. The elastic force of the first spring 14 can make the water stop plug 13 move downward, so as to close the communicating pipe 12. There is also a magnet 15. The magnetic force of the magnet 15 is greater than the elastic force of the first spring 14. The water stop plug 13 can move under the magnetic force of the magnet 15, so as to open the communicating pipe 12.

[0038] When there is water flow through the valve body 1 and the flow rate of the water outlet end 31 needs to be adjusted, the magnet 15 is used to drive the water stop plug 13 to rise, so as to open the communicating pipe 12. At this time, the rotation of the handle 10 can drive the sphere 17 to rotate, so as to realize the adjustment of the flow rate. By using the water pressure method, continuous constant pressure can be provided to realize the control of the flow rate, and the overall structure is more simple and ingenious, convenient for processing, without complex cooperation, and the cue 2 part can form a relatively airtight space, and the overall seal of the valve is better.

[0039] When the water stop plug 13 closes the communicating pipe 12, by unscrewing the drain plug 7, the first spring 14 can drive the water above the piston 5 to be discharged. The protrusion 6 of the piston 5 can slide into the upper groove, so that when the handle 10 rotates, it can drive the dial 9 to rotate simultaneously. At this time, accidentally touching the handle 10 will not affect the flow rate of the valve body 1. And for narrow spaces, at this time, the movement range of the handle 10 is limited, and the handle 10 can freely adjust the angle without affecting the flow rate.

[0040] A method for using an anti-backflow self-acting balanced flow combination valve, adopting the above anti-backflow self-acting balanced flow combination valve, includes the following steps: The water in the water inlet end 30 flows into the flow valve 23 through the opening 26 of the flow valve 23, and then enters the water outlet end 31 through the water outlet hole 27 of the flow valve 23. At the same time, part of the water flow impacts the valve core 24 through the opening 32. According to the change of water pressure, the valve core 24 slides in the flow valve 23, and the sliding of the valve core 24 realizes the adjustment of the size of the opening 26, thereby realizing the self-balancing of the flow rate.

[0041] When it is necessary to adjust the flow rate of the water outlet end 31, place the magnet 15 on one side of the water stop plug 13. The magnetic force of the magnet 15 drives the water stop plug 13 to rise, so that the communicating pipe 12 is opened. Part of the water flow in the valve body 1 flows into the cavity 33 through the communicating pipe 12. Then, the water pressure drives the piston 5 to descend, so that the protrusion 6 of the piston 5 slides into the lower groove 3, so that when the handle 10 rotates, the handle 10 drives the small valve rod 16 to rotate, the small valve rod 16 drives the piston 5 to rotate, and the piston 5 drives the sphere 17 to rotate through the ball rod 2, realizing the adjustment of the flow rate.

[0042] After the flow rate adjustment is completed, remove the magnet 15. The elastic force of the first spring 14 drives the water stop plug 13 to descend, so that the communicating pipe 12 is closed. By unscrewing the drain plug 7, the first spring 14 can drive the water above the piston 5 to be discharged. The protrusion 6 of the piston 5 can slide into the upper groove, so that when the handle 10 drives the piston 5 to rotate, the piston 5 can drive the dial 9 to rotate simultaneously. At this time, accidentally touching the handle 10 will not affect the flow rate of the valve body 1 or the reading of the pointer 11.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A backflow prevention self-operated balanced flow combination valve, comprising a valve body (1), wherein the valve body (1) comprises a water inlet end (30) and a water outlet end (31), characterized in that: Also includes, A flow valve (23), wherein two ends of the flow valve (23) are respectively provided with an opening (32) and a water outlet hole (27), and a side wall of the flow valve (23) is provided with at least one opening (26); A valve core (24) is slidably disposed in the flow valve (23), the valve core (24) being connected to the flow valve (23) via a third spring (28), and the sliding of the valve core (24) can change the size of the opening (26); Water at the water inlet end (30) can impact the valve core (24) through the opening (32), and the water at the water inlet end (30) can flow into the flow valve (23) through the opening (26), and then flow into the water outlet end (31) through the water outlet hole (27).

2. The anti-backflow self-operated balanced flow combination valve according to claim 1, characterized in that: One end of the valve core (24) is a closed end, and the closed end is close to the opening (32). The third spring (28) is located in the valve core (24). One end of the third spring (28) is connected to the closed end, and the other end is connected to the flow valve (23).

3. The anti-backflow self-operated balanced flow combination valve according to claim 1, characterized in that: The water in the opening (32) generates an increased impact force on the valve core (24), which can cause the third spring (28) to deform accordingly, thereby reducing the opening (26) and achieving self-balancing of the flow rate.

4. The anti-backflow self-operated balanced flow combination valve according to claim 1, characterized in that: A valve flap (19) for realizing a backflow prevention function is slidably disposed in the water inlet end (30), and the valve flap (19) is connected to the valve body (1) via a second spring (18).

5. The anti-backflow self-operated balanced flow combination valve according to claim 1, characterized in that: The valve body (1) is connected to a plurality of PT components (22), and the PT components (22) are equipped with temperature and pressure monitoring mechanisms.

6. The anti-backflow self-operated balanced flow combination valve according to claim 1, characterized in that: A ball (17) rotatably connected to the valve body (1) is disposed in the water outlet (31), a water passage is provided in the ball (17), and a handle (10) is rotatably connected to the valve body (1), and the handle (10) can drive the ball (17) to rotate, thereby achieving control of the water outlet volume.

7. The anti-backflow self-operated balanced flow combination valve according to claim 6, characterized in that: The valve body (1) is fixedly connected to a dial (9), the dial (9) is provided with an arc-shaped hole, the handle (10) is threadedly connected to a bolt (21), and the bolt (21) can penetrate the arc-shaped hole and abut against the surface of the dial (9).

8. The anti-backflow self-operated balanced flow combination valve according to claim 6, characterized in that: The valve body (1) is rotatably connected to a dial plate (9), the ball body (17) is fixedly connected to a ball rod (2), the ball rod (2) is rotatably connected to a small valve stem (16), the small valve stem (16) and the handle (10) are fixedly connected, and the dial plate (9) is fixedly connected to a scale rod (8).

9. The anti-backflow self-operated balanced flow combination valve according to claim 8, characterized in that: The valve body (1) is provided with a cavity (33), a piston (5) is movably connected in the cavity (33), the piston (5) is slidably sleeved on the small valve stem (16), the scale rod (8) and the ball rod (2) are respectively provided with an upper groove and a lower groove (3), the upper and lower ends of the piston (5) are respectively fixedly connected with protrusions (6) that can slide into the upper groove or the lower groove (3), and the cavity (33) is internally threadedly connected with a drain plug (7).

10. The anti-backflow self-operated balanced flow combination valve according to claim 9, characterized in that: The lower end of the piston (5) is connected to a compression spring (4), the lower end of the compression spring (4) abuts against the valve body (1), the valve body (1) is provided with a connecting pipe (12), one end of the connecting pipe (12) is connected to the water outlet end (31), and the other end of the connecting pipe (12) is connected to the cavity (33) above the piston (5); the valve body (1) is slidably connected to a water stopper (13) capable of closing the connecting pipe (12), the water stopper (13) is connected to the valve body (1) via a first spring (14), and the water stopper (13) can be moved by the magnetic force of a magnet (15), thereby opening the connecting pipe (12).

Images