Mixing prevention valve
By incorporating an impeller and cleaning brush into the anti-mixing valve design, the problems of residue on the inner wall of the pipeline and water hammer are solved, achieving efficient cleaning and extended service life of the anti-mixing valve.
Patent Information
- Application Number
- CN202422957003.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-02
AI Technical Summary
After prolonged use, liquid residue can easily remain on the inner wall of the inlet and outlet pipes of the anti-mixing valve, and it is also susceptible to water hammer, which can lead to cracking and affect its service life.
An anti-mixing valve was designed, comprising a valve body, a pneumatic actuator, a pressure relief chamber, an impeller, and a cleaning brush. The rotation of the impeller drives the cleaning brush to clean the inner wall of the pipeline, and the pressure relief chamber counteracts the water hammer pressure, thus extending the service life.
It effectively prevents media residue from adhering to the valve wall, extends the service life of the anti-mixing valve, and improves the reliability and safety of the anti-mixing valve.
Smart Images
Figure CN223537008U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-mixing valve technology, specifically an anti-mixing valve. Background Technology
[0002] The working principle of an anti-mixing valve is to prevent the mixing of different fluids through its unique structural design, ensuring the purity and safety of the fluid. Each anti-mixing valve typically has two independent valve core seals, forming a leakage chamber open to the atmosphere. Under normal operating conditions, this leakage chamber is formed between the two seals. When the valve is opened, the leakage chamber closes, ensuring that fluid flows from one pipeline to another without overflowing. This design effectively prevents product leakage or contamination when the valve is open. Anti-mixing valves are primarily used in fluid handling systems requiring high levels of hygiene control, such as in the food and pharmaceutical industries.
[0003] After long-term use, liquid residue is easily left on the inner wall of the inlet and outlet pipes of the anti-mixing valve. Since the pipes are usually integrated with the valve body, they are inconvenient to disassemble and clean, causing problems. Moreover, during the opening and closing of the anti-mixing valve, the pipes and valve body are prone to cracking due to water hammer, which affects the service life of the anti-mixing valve. Therefore, improvements are urgently needed. Utility Model Content
[0004] The purpose of this invention is to provide an anti-mixing valve to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-mixing valve, comprising a valve body, a pneumatic actuator, a pressure relief chamber, an impeller, and a cleaning brush. The pneumatic actuator is mounted on the top of the valve body. A first inlet pipe and a second inlet pipe are respectively installed on the outer wall of one side of the valve body, and a first outlet pipe and a second outlet pipe are respectively installed on the outer wall of the other side of the valve body. A first valve chamber is provided inside the valve body at the positions of the first inlet pipe and the first outlet pipe, and a second valve chamber is provided inside the valve body at the positions of the second inlet pipe and the second outlet pipe. An outer valve stem is installed inside the pneumatic actuator, and an inner valve stem is installed inside the outer valve stem. The inner valve stem extends into the second valve chamber and the first valve chamber respectively, and a second valve disc and a first valve disc are installed thereon. A transmission box is installed inside the first inlet pipe, the second inlet pipe, the second outlet pipe, and the first outlet pipe. The impellers are all rotatably mounted on the outer walls on both sides of the transmission box. The cleaning brushes are all mounted on the rotor on one side of the transmission box. The pressure relief chambers are all located on one side of the top of the first inlet pipe, the second inlet pipe, the second outlet pipe, and the first outlet pipe. The pressure relief chambers are connected to the first inlet pipe, the second inlet pipe, the second outlet pipe, and the first outlet pipe through pressure relief holes. A buffer piston is installed inside the pressure relief chamber, and the buffer piston fits tightly with the pressure relief chamber.
[0006] Preferably, an upper sterilization port is installed on both outer walls at the top of the valve body, which communicates with the second valve chamber, and a lower sterilization port is installed on both outer walls at the bottom of the valve body, which communicates with the first valve chamber.
[0007] Preferably, a rotating rod is installed inside the transmission box, and both ends of the rotating rod are fixedly connected to the impeller.
[0008] Preferably, a first bevel tooth is installed on the outer wall of the rotating rod.
[0009] Preferably, one end of the rotor extends into the interior of the transmission box and is fitted with a second bevel tooth, which meshes tightly with the first bevel tooth.
[0010] Preferably, the cleaning brush has an arc-shaped structure, and all the cleaning brushes are in close contact with the inner walls of the first liquid inlet pipe, the second liquid inlet pipe, the second liquid outlet pipe, and the first liquid outlet pipe.
[0011] Preferably, a leakage cavity is provided between the second valve disc and the first valve disc.
[0012] Preferably, the first valve disc has a leakage channel inside, and the leakage channel is connected to the leakage chamber.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] The liquid medium flows from the first inlet pipe to the first outlet pipe and from the second inlet pipe to the second outlet pipe. Under the impact force of the liquid, the impeller rotates, causing the rotating rod inside the transmission box to drive the first bevel tooth to rotate. The first bevel tooth drives the rotor to rotate through the second bevel tooth, causing the cleaning brush to move along the inner wall of the first inlet pipe, the second inlet pipe, the second outlet pipe, and the first outlet pipe, thereby cleaning the inner wall of the pipe and preventing the medium from sticking to the wall and remaining.
[0015] When the anti-mixing valve is opened or closed, the pressure in the pipeline enters the pressure relief chamber through the pressure relief hole and pushes the buffer piston to move, forming a dynamic balance to counteract the damage caused by water hammer, thereby extending the service life of the anti-mixing valve. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0019] Figure 4This is an enlarged schematic diagram of the first liquid inlet pipe of this utility model;
[0020] Figure 5 This is an enlarged cross-sectional view of the first liquid inlet pipe of this utility model.
[0021] In the diagram: 1. Valve body; 2. First inlet pipe; 3. Second inlet pipe; 4. Pneumatic actuator; 5. Second outlet pipe; 6. First outlet pipe; 7. Outer valve stem; 8. Inner valve stem; 9. Upper sterilization port; 10. Lower sterilization port; 11. Leakage channel; 12. First valve chamber; 13. First valve disc; 14. Second valve chamber; 15. Second valve disc; 16. Leakage chamber; 17. Pressure relief chamber; 18. Pressure relief hole; 19. Buffer piston; 20. Transmission box; 21. Impeller; 22. Rotor; 23. Cleaning brush; 24. Rotating rod; 25. First bevel tooth; 26. Second bevel tooth. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0024] Please see Figure 1-5 An embodiment of this utility model provides an anti-mixing valve, comprising a valve body 1, a pneumatic actuator 4, a pressure relief chamber 17, an impeller 21, and a cleaning brush 23. The pneumatic actuator 4 is installed at the top of the valve body 1. A first inlet pipe 2 and a second inlet pipe 3 are respectively installed on the outer wall of one side of the valve body 1, and a first outlet pipe 6 and a second outlet pipe 5 are respectively installed on the outer wall of the other side of the valve body 1. A first valve chamber 12 is provided inside the valve body 1 at the positions of the first inlet pipe 2 and the first outlet pipe 6, and a second valve chamber 14 is provided inside the valve body 1 at the positions of the second inlet pipe 3 and the second outlet pipe 5. An outer valve stem 7 is installed inside the pneumatic actuator 4, and an inner valve stem 8 is installed inside the outer valve stem 7. The outer valve stem 7 and the inner valve stem 8 extend into the interior of the second valve chamber 14 and the first valve chamber 12, respectively, and a second valve disc 15 and a first valve disc 13 are installed thereon.
[0025] Specifically, the first valve chamber 12 between the first inlet pipe 2 and the first outlet pipe 6 is opened and closed by the first valve disc 13, and the second valve chamber 14 between the second inlet pipe 3 and the second outlet pipe 5 is opened and closed by the second valve disc 15. The first valve chamber 12 and the second valve chamber 14 are each individually sealed. The second valve disc 15 and the first valve disc 13 are controlled by the outer valve stem 7 and the inner valve stem 8, respectively. When the seal leaks, the leaked medium in the leakage chamber 16 flows into the leakage channel 11 for discharge, so that the medium in the first valve chamber 12 and the second valve chamber 14 will not be cross-contaminated due to seal leakage.
[0026] The first inlet pipe 2, the second inlet pipe 3, the second outlet pipe 5, and the first outlet pipe 6 are all equipped with a transmission box 20. The impellers 21 are all rotatably mounted on the outer walls of both sides of the transmission box 20. The cleaning brushes 23 are all mounted on the rotor 22 on one side of the transmission box 20.
[0027] Specifically, the liquid medium flows from the first inlet pipe 2 to the first outlet pipe 6 and from the second inlet pipe 3 to the second outlet pipe 5, respectively. Under the impact force of the liquid, the impeller 21 rotates, causing the rotating rod 24 inside the transmission box 20 to drive the first bevel tooth 25 to rotate. The first bevel tooth 25 drives the rotor 22 to rotate through the second bevel tooth 26, so that the cleaning brush 23 moves along the inner wall of the first inlet pipe 2, the second inlet pipe 3, the second outlet pipe 5, and the first outlet pipe 6, thereby cleaning the inner wall of the pipe and preventing the medium from sticking to the wall and remaining.
[0028] The pressure relief chambers 17 are all located on one side of the top of the first liquid inlet pipe 2, the second liquid inlet pipe 3, the second liquid outlet pipe 5, and the first liquid outlet pipe 6. The pressure relief chambers 17 are connected to the first liquid inlet pipe 2, the second liquid inlet pipe 3, the second liquid outlet pipe 5, and the first liquid outlet pipe 6 through the pressure relief holes 18. The pressure relief chambers 17 are equipped with buffer pistons 19 inside, and the buffer pistons 19 are tightly fitted to the pressure relief chambers 17.
[0029] Specifically, when the anti-mixing valve is opened or closed, the pressure in the pipeline enters the pressure relief chamber 17 through the pressure relief hole 18 and pushes the buffer piston 19 to move, forming a dynamic balance to counteract the damage caused by water hammer, thereby extending the service life of the anti-mixing valve.
[0030] The valve body 1 has two upper sterilization ports 9 installed on the top two outer walls, which are connected to the second valve chamber 14. The valve body 1 also has two lower sterilization ports 10 installed on the bottom two outer walls, which are connected to the first valve chamber 12.
[0031] Specifically, the sterilizing gas is introduced into the upper sterilization port 9 and the lower sterilization port 10 respectively, and the gas flows through the second valve chamber 14 and the first valve chamber 12 to disinfect and sterilize them.
[0032] The transmission box 20 has a rotating rod 24 installed inside, and both ends of the rotating rod 24 are fixedly connected to the impeller 21.
[0033] The first bevel tooth 25 is installed on the outer wall of the rotating rod 24;
[0034] One end of the rotor 22 extends into the interior of the transmission box 20 and is equipped with a second bevel tooth 26, which meshes tightly with the first bevel tooth 25.
[0035] The cleaning brush 23 has an arc-shaped structure, and all cleaning brushes 23 are in close contact with the inner walls of the first liquid inlet pipe 2, the second liquid inlet pipe 3, the second liquid outlet pipe 5, and the first liquid outlet pipe 6.
[0036] A leakage cavity 16 is provided between the second valve disc 15 and the first valve disc 13;
[0037] The first valve disc 13 has a leakage channel 11 inside, which is connected to the leakage chamber 16.
[0038] In use, the anti-mixing valve operates as follows: First, the first valve chamber 12 between the first inlet pipe 2 and the first outlet pipe 6 is opened and closed by the first valve disc 13; the second valve chamber 14 between the second inlet pipe 3 and the second outlet pipe 5 is opened and closed by the second valve disc 15. Both the first valve chamber 12 and the second valve chamber 14 are individually sealed. The second valve disc 15 and the first valve disc 13 are controlled by the outer valve stem 7 and the inner valve stem 8, respectively. When a leak occurs in the seal, the leaked medium in the leak chamber 16 flows into the leak channel 11 for discharge, preventing cross-contamination of the medium in the first valve chamber 12 and the second valve chamber 14 due to seal leakage. Then, the liquid medium flows from the first inlet pipe 2 to the first outlet pipe 6 and from the second inlet pipe 3 to the second outlet pipe 5, respectively, under the impact force of the liquid... The rotation of impeller 21 causes the rotating rod 24 inside transmission box 20 to drive the first bevel tooth 25 to rotate. The first bevel tooth 25 drives the rotor 22 to rotate through the second bevel tooth 26, causing the cleaning brush 23 to move along the inner wall of the first inlet pipe 2, the second inlet pipe 3, the second outlet pipe 5, and the first outlet pipe 6, thereby cleaning the inner wall of the pipe and preventing media residue from adhering to the wall. When disinfection and sterilization are required, sterilizing gas is introduced into the upper sterilization port 9 and the lower sterilization port 10 respectively. The gas flows through the second valve chamber 14 and the first valve chamber 12 to disinfect and sterilize. Furthermore, when the anti-mixing valve is opened and closed, the pressure in the pipe enters the pressure relief chamber 17 through the pressure relief hole 18 and pushes the buffer piston 19 to move, forming a dynamic balance to counteract the damage caused by water hammer, thereby extending the service life of the anti-mixing valve.
[0039] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
Claims
1. An anti-mixing valve, characterized in that, The valve body includes a valve body (1), a pneumatic actuator (4), a pressure relief chamber (17), an impeller (21), and a cleaning brush (23). The pneumatic actuator (4) is installed at the top of the valve body (1). A first inlet pipe (2) and a second inlet pipe (3) are respectively installed on the outer wall of one side of the valve body (1). A first outlet pipe (6) and a second outlet pipe (5) are respectively installed on the outer wall of the other side of the valve body (1). A first valve chamber (12) is provided inside the valve body (1) at the positions of the first inlet pipe (2) and the first outlet pipe (6). A second valve chamber (14) is provided inside the valve body (1) at the positions of the second inlet pipe (3) and the second outlet pipe (5). An outer valve stem (7) is installed inside the pneumatic actuator (4), and an inner valve stem (8) is installed inside the outer valve stem (7). The outer valve stem (7) and the inner valve stem (8) extend to the second valve chamber (14) and the first valve chamber (15), respectively. The first valve plate (15) and the first valve plate (13) are installed inside the first inlet pipe (2), the second inlet pipe (3), the second outlet pipe (5) and the first outlet pipe (6). The transmission box (20) is installed inside the first inlet pipe (2), the second inlet pipe (3), the second outlet pipe (5) and the first outlet pipe (6). The impeller (21) is rotatably installed on the outer wall of both sides of the transmission box (20). The cleaning brush (23) is installed on the rotor (22) on one side of the transmission box (20). The pressure relief chamber (17) is located on one side of the top of the first inlet pipe (2), the second inlet pipe (3), the second outlet pipe (5) and the first outlet pipe (6). The pressure relief chamber (17) is connected to the first inlet pipe (2), the second inlet pipe (3), the second outlet pipe (5) and the first outlet pipe (6) through the pressure relief hole (18). The pressure relief chamber (17) is equipped with a buffer piston (19). The buffer piston (19) is tightly fitted with the pressure relief chamber (17).
2. The anti-mixing valve according to claim 1, characterized in that: The valve body (1) has an upper sterilization port (9) installed on both outer walls at the top, which is connected to the second valve chamber (14). The valve body (1) also has a lower sterilization port (10) installed on both outer walls at the bottom, which is connected to the first valve chamber (12).
3. The anti-mixing valve according to claim 1, characterized in that: The transmission box (20) is equipped with a rotating rod (24), and both ends of the rotating rod (24) are fixedly connected to the impeller (21).
4. The anti-mixing valve according to claim 3, characterized in that: The outer wall of the rotating rod (24) is equipped with a first bevel tooth (25).
5. The anti-mixing valve according to claim 4, characterized in that: One end of the rotor (22) extends into the interior of the transmission box (20) and is fitted with a second bevel tooth (26), which meshes tightly with the first bevel tooth (25).
6. The anti-mixing valve according to claim 1, characterized in that: The cleaning brush (23) has an arc-shaped structure, and the cleaning brush (23) is in close contact with the inner wall of the first liquid inlet pipe (2), the second liquid inlet pipe (3), the second liquid outlet pipe (5), and the first liquid outlet pipe (6).
7. The anti-mixing valve according to claim 1, characterized in that: A leakage cavity (16) is provided between the second valve disc (15) and the first valve disc (13).
8. The anti-mixing valve according to claim 7, characterized in that: The first valve disc (13) has a leakage channel (11) inside, which is connected to the leakage chamber (16).