Combination valve for hydraulic module and buffer water tank

Abstract

The utility model provides a combination valve for a hydraulic module and a buffer water tank, and belongs to the technical field of valve manufacturing. The problem that an existing valve for a hydraulic module and a buffer water tank is not compact enough in structure is solved. The combination valve for the hydraulic module and the buffer water tank comprises a valve body, a valve ball and a valve rod, the valve ball is located in the valve body, the inner wall of the valve body is provided with annular sealing seats in a supporting mode through steps, the sealing seats are arranged on the two sides of the valve ball in a sealing mode, the inner end of the valve rod is fixedly connected with the valve ball in the circumferential direction, and the outer end of the valve rod extends out of the valve body and is connected with a driving piece. The valve body is provided with a first connecting end radially communicated with an inner cavity of the valve body, the first connecting end is connected with an exhaust valve, the valve body is provided with a second connecting end radially connected with the inner cavity of the valve body, the second connecting end is connected with a safety valve for discharging overpressure media, and connector structures are arranged at the two ends of the valve body. The utility model has the advantages of compact structure, convenient installation and the like.

Description

Technical Field

[0001] This utility model belongs to the field of valve manufacturing technology, and relates to a combination valve, particularly a combination valve for hydraulic modules and buffer tanks. Background Technology

[0002] In air source heat pump systems, hydraulic modules and buffer tanks are indispensable components. A hydraulic module is a device integrating various hydraulic components, including a water pump, valve assembly, filter, and constant pressure water supply device. It features automatic adjustment, safety protection, energy saving, and environmental friendliness. The buffer tank primarily functions to stabilize the system water temperature and reduce frequent starts of the main unit. It features increased water capacity, energy saving, and efficient defrosting.

[0003] Currently, ball valves are required to control flow in hydraulic modules and buffer tanks. Existing ball valves have a simple structure, so safety valves need to be connected to the pipeline to prevent damage to the pipeline and components due to overpressure. Air vents also need to be connected to the pipeline to release gas, improve thermal efficiency, and prevent damage to components due to gas. As a result, the ball valves, safety valves, and air vents are connected separately, which is inconvenient to install, has low space utilization, and all pipeline connections are potential leak points, increasing the risk of leakage. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a hydraulic module and a combination valve for a buffer tank that is compact in structure and easy to install.

[0005] The objective of this utility model can be achieved through the following technical solution: A combined valve for a hydraulic module and a buffer tank, comprising a valve body, a valve ball, and a valve stem. The valve ball is located within the valve body. The inner wall of the valve body is supported by a step and has an annular sealing seat that seals both sides of the valve ball. The inner end of the valve stem is circumferentially fixed to the valve ball, and the outer end of the valve stem extends out of the valve body and is connected to a driving component. The valve body is integrally injection molded. The valve body has a connecting end one that radially connects to its inner cavity and is connected to an exhaust valve. The valve body also has a connecting end two that radially connects to its inner cavity and is connected to a safety valve that discharges overpressure media. Both ends of the valve body are provided with connector structures.

[0006] In the aforementioned combination valve for a hydraulic module and buffer tank, the valve body has a connecting end three that radially communicates with its inner cavity, and a pressure gauge is connected to the connecting end three.

[0007] In the aforementioned combination valve for a hydraulic module and buffer tank, the vent valve and pressure gauge are located on opposite sides of the valve stem, and the safety valve is located below the valve body and below the pressure gauge.

[0008] In the aforementioned combination valve for a hydraulic module and buffer tank, the first connecting end is embedded with an internally threaded insert, the connecting end of the vent valve is threadedly connected to the internally threaded insert, the second connecting end is embedded with an internally threaded insert, the connecting end of the safety valve is threadedly connected to the internally threaded insert, the third connecting end is embedded with an internally threaded insert, and the connecting end of the pressure gauge is threadedly connected to the internally threaded insert.

[0009] In the aforementioned combination valve for a hydraulic module and buffer tank, the connector structure includes a PPR connector, a locking cap, and a sealing gasket. An external threaded insert is embedded at the end of the valve body. The sealing gasket is located between the end of the valve body and the PPR connector. The locking cap is threadedly connected to the external threaded insert. The locking cap has an inwardly folded flange. The outer wall of the PPR connector has a radially outwardly convex retaining ring for the flange to abut against.

[0010] In the aforementioned combination valve for a hydraulic module and buffer tank, the safety valve includes a valve body, a discharge port on the side of the valve body, and a valve seat connected to the discharge port inside the valve body. A valve cap is threaded to the lower end of the valve body, and a diaphragm is pressed between the valve cap and the valve body. The top of the diaphragm is an outwardly convex sealing part. The diaphragm covers a spring seat one, and the valve cap is internally threaded to a spring seat two. A spring is provided between the spring seat one and the spring seat two. A valve column passes through the spring seat two and the spring seat two. The valve column has a radially outwardly convex ring at the point where it protrudes from the outer wall of the spring seat one and abuts against the spring seat one. A valve sleeve is fitted over the lower end of the valve column, and a locking nut is threaded to the lower end of the valve column. The inner wall of the valve sleeve has a radially inwardly convex part that abuts against the top of the locking nut. A plug is embedded at the bottom of the valve sleeve. The spring provides elastic force to keep the sealing part sealed against the valve seat.

[0011] In the aforementioned combination valve for a hydraulic module and buffer tank, the driving component is a handle. The inner wall of the handle has a radially convex ring. The outer end of the valve stem passes through the convex ring and is threaded with a nut. The valve stem is fitted with a circumferentially fixed washer. The washer is located below the convex ring and is circumferentially fixed to the inner wall of the handle.

[0012] In another scenario, in the aforementioned combination valve for a hydraulic module and buffer tank, the driving component is an electric actuator, the output end of which is fixedly connected to the outer end of the valve stem. The electric actuator can precisely and quickly rotate the valve stem, accurately regulating the flow rate of the medium.

[0013] Compared with existing technologies, this hydraulic module and buffer tank combination valve integrates the functions of ball valve, air vent valve and safety valve. It has a compact structure, convenient connection, high space utilization, and the valve body is integrally injection molded, resulting in fewer leakage points and a long service life. Attached Figure Description

[0014] Figure 1 This is a structural cross-sectional view of the combined valve used in this hydraulic module and buffer tank.

[0015] Figure 2 This is an enlarged view of the safety valve in the combination valve for the hydraulic module and buffer tank.

[0016] In the diagram, 1. Valve body; 2. Valve ball; 3. Valve stem; 4. Sealing seat; 5. Connection end one; 6. Exhaust valve; 7. Connection end two; 8. Safety valve; 9. Connection end three; 10. Pressure gauge; 11. Internal threaded insert one; 12. Internal threaded insert two; 13. Internal threaded insert three; 14. PPR connector; 15. Locking cap; 16. Sealing gasket; 17. External threaded insert; 18. Valve body; 19. Discharge port; 20. Valve seat; 21. Valve cap; 22. Diaphragm; 221. Sealing part; 23. Spring seat one; 24. Spring seat two; 25. Spring; 26. Raised ring; 27. Valve sleeve; 271. Internal raised part; 28. Locking nut; 29. ​​Plug cap; 30. Handle; 301. Raised ring; 31. Nut; 32. Gasket; 33. Valve column. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1 and Figure 2 As shown, the combined valve for this hydraulic module and buffer tank includes a valve body 1, a valve ball 2, and a valve stem 3. The valve ball 2 is located inside the valve body 1. The inner wall of the valve body 1 is supported by a step and has an annular sealing seat 4 that seals both sides of the valve ball 2. The inner end of the valve stem 3 is circumferentially fixed to the valve ball 2, and the outer end of the valve stem 3 extends out of the valve body 1 and is connected to a drive component. The valve body 1 is integrally injection molded. The valve body 1 has a connecting end 5 that radially connects to its inner cavity and is connected to an exhaust valve 6. The valve body 1 also has a connecting end 7 that radially connects to its inner cavity and is connected to a safety valve 8 that discharges overpressure media. Both ends of the valve body 1 are provided with connector structures. In this embodiment, the exhaust valve 6 is an automatic exhaust valve.

[0019] This hydraulic module and buffer tank combination valve integrates the functions of a ball valve, an air release valve 6, and a safety valve 8. It has a compact structure, is easy to connect, and has high space utilization. Moreover, the valve body 1 is integrally injection molded, resulting in fewer leakage points and a long service life.

[0020] To elaborate further, the valve body 1 has a connecting end 3 9 that radially connects to its internal cavity. A pressure gauge 10 is connected to this connecting end 3 9, allowing for easy monitoring of the medium pressure and convenient operation. The exhaust valve 6 and pressure gauge 10 are located on opposite sides of the valve stem 3, while the safety valve 8 is located below the valve body 1 and below the pressure gauge 10. This structural layout is rational, maximizing space utilization. Both the exhaust valve 6 and the safety valve 8 exhibit good operational stability, and the pressure gauge 10 is easily visible.

[0021] Connection end 5 has an embedded internal threaded insert 11. The connection end of the exhaust valve 6 is threadedly connected to the internal threaded insert 11. Connection end 7 has an embedded internal threaded insert 12. The connection end of the safety valve 8 is threadedly connected to the internal threaded insert 12. Connection end 9 has an embedded internal threaded insert 13. The connection end of the pressure gauge 10 is threadedly connected to the internal threaded insert 13. This connection is convenient. The internal threaded inserts 11, 12, and 13 ensure good structural robustness and prevent the valve body 1 from cracking under stress. The outer walls of the internal threaded inserts 11, 12, and 13 all have three radially convex connecting rings, ensuring a strong connection.

[0022] The connector structure includes a PPR connector 14, a locking cap 15, and a sealing gasket 16. An externally threaded insert 17 is embedded at the end of the valve body 1. The sealing gasket 16 is located between the end of the valve body 1 and the PPR connector 14. The locking cap 15 is threadedly connected to the externally threaded insert 17. The locking cap 15 has an inwardly folded flange. The outer wall of the PPR connector 14 has a radially convex retaining ring that the flange abuts against. The internal part of the externally threaded insert 17 has three radially inner convex rings, ensuring a secure connection with the valve body 1. The externally threaded insert 17 is stressed to prevent cracking at the end of the valve body 1. After the locking cap 15 is tightened, the flange abuts against the retaining ring, causing the PPR connector 14 to press the sealing gasket 16 tightly against the end of the valve body 1, ensuring a tight seal. The PPR connector 14 is easy to connect.

[0023] Safety valve 8 includes a valve body 18, a discharge port 19 on the side of the valve body 18, and a valve seat 20 communicating with the discharge port 19 inside the valve body 18. A valve cap 21 is threadedly connected to the lower end of the valve body 18. A diaphragm 22 is pressed between the valve cap 21 and the valve body 18. The top of the diaphragm 22 is a convex sealing part 221. The diaphragm 22 covers a spring seat 1 23. A spring seat 24 is internally threadedly connected to the valve cap 21. A spring 25 is provided between the spring seat 1 23 and the spring seat 24. A valve stem 33 passes through... The second spring seat 24 is provided. The valve stem 33 has a radially outward protruding convex ring 26 that abuts against the first spring seat 23 at the outer wall of the first spring seat 23. The lower end of the valve stem 33 is covered with a valve sleeve 27. The lower end of the valve stem 33 is threadedly connected with a locking nut 28. The inner wall of the valve sleeve 27 has a radially inward protruding inner convex part 271 that abuts against the top of the locking nut 28. A plug cap 29 is embedded at the bottom of the valve sleeve 27. The spring 25 provides elastic force so that the sealing part 221 tends to seal against the valve seat 20. When the pressure of the medium inside the valve body 1 exceeds the elastic force of the spring 25, the overpressure medium pushes the sealing part 221 downward, the valve seat 20 and the discharge port 19 are connected, and the medium is discharged from the discharge port 19, thus preventing damage to the valve body 1 and pipeline components due to the overpressure of the medium; the diaphragm 22 acts as a separator to prevent the medium from being discharged from the valve cover; in actual manufacturing, a sealing ring is pressed between the diaphragm 22 and the valve cap 21, which further ensures the sealing performance.

[0024] In this embodiment, the driving component is a handle 30. The inner wall of the handle 30 has a radially convex ring 301. The outer end of the valve stem 3 passes through the ring 301 and is threadedly connected to a nut 31. A circumferentially fixed washer 32 is fitted onto the valve stem 3. The washer 32 is located below the ring 301 and is circumferentially fixed to the inner wall of the handle 30. By rotating the handle 30, the valve stem 3 and the valve ball 2 are rotated, thereby adjusting the medium flow rate. In this embodiment, the outer wall of the valve stem 3 has symmetrical cutting surfaces, and the inner hole of the washer 32 is a waist-shaped hole that fits into the outer wall of the valve stem 3. This achieves circumferential fixation of the valve stem 3 and the washer 32. The inner wall of the handle 30 has a cutting surface, and the outer wall of the washer 32 has a mating surface that fits into the cutting surface. This achieves circumferential fixation of the handle 30 and the washer 32.

[0025] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A combined valve for a hydraulic module and a buffer tank, comprising a valve body (1), a valve ball (2), and a valve stem (3), wherein the valve ball (2) is located inside the valve body (1), and the inner wall of the valve body (1) is supported by a step and has an annular sealing seat (4) sealing both sides of the valve ball (2), the inner end of the valve stem (3) is circumferentially fixed to the valve ball (2), and the outer end of the valve stem (3) extends out of the valve body (1) and is connected to a driving component, characterized in that, The valve body (1) is integrally injection molded. The valve body (1) has a connecting end (5) that is radially connected to its inner cavity and the connecting end (5) is connected to an exhaust valve (6). The valve body (1) has a connecting end (7) that is radially connected to its inner cavity and the connecting end (7) is connected to a safety valve (8) that discharges overpressure medium. Both ends of the valve body (1) are provided with joint structures.

2. The combined valve for a hydraulic module and buffer tank according to claim 1, characterized in that, The valve body (1) has a connecting end three (9) that radially communicates with its inner cavity, and the connecting end three (9) is connected to a pressure gauge (10).

3. The combined valve for a hydraulic module and buffer tank according to claim 2, characterized in that, The exhaust valve (6) and pressure gauge (10) are located on both sides of the valve stem (3), and the safety valve (8) is located below the valve body (1) and below the pressure gauge (10).

4. The combined valve for a hydraulic module and buffer tank according to claim 3, characterized in that, The first connecting end (5) is embedded with an internal thread insert (11), the connecting end of the exhaust valve (6) is threaded to the internal thread insert (11), the second connecting end (7) is embedded with an internal thread insert (12), the connecting end of the safety valve (8) is threaded to the internal thread insert (12), the third connecting end (9) is embedded with an internal thread insert (13), and the connecting end of the pressure gauge (10) is threaded to the internal thread insert (13).

5. A combined valve for a hydraulic module and buffer tank according to claim 1, 2, 3, or 4, characterized in that, The connector structure includes a PPR connector (14), a locking cap (15), and a sealing gasket (16). The valve body (1) has an external threaded insert (17) embedded at its end. The sealing gasket (16) is located between the end of the valve body (1) and the PPR connector (14). The locking cap (15) is threadedly connected to the external threaded insert (17). The locking cap (15) has an inwardly folded flange. The outer wall of the PPR connector (14) has a radially outwardly convex retaining ring for the flange to abut against.

6. A combined valve for a hydraulic module and buffer tank according to claim 5, characterized in that, The safety valve (8) includes a valve body (18), a discharge port (19) on the side of the valve body (18), and a valve seat (20) connected to the discharge port (19) inside the valve body (18). A valve cap (21) is threaded to the lower end of the valve body (18). A diaphragm (22) is pressed between the valve cap (21) and the valve body (18). The top of the diaphragm (22) is a convex sealing part (221). The diaphragm (22) covers a spring seat one (23). The valve cap (21) is connected to a spring seat two (24) through an internal thread. A spring (25) is provided between the spring seat one (23) and the spring seat two (24). The valve stem (33) passes through the second spring seat (24) and the second spring seat (24). The valve stem (33) has a radially protruding ring (26) that abuts against the first spring seat (23) at the outer wall of the first spring seat (23). The lower end of the valve stem (33) is covered with a valve sleeve (27). The lower end of the valve stem (33) is threaded with a locking nut (28). The inner wall of the valve sleeve (27) has a radially protruding inner part (271) that abuts against the top of the locking nut (28). A plug cap (29) is embedded at the bottom of the valve sleeve (27). The spring (25) provides elastic force so that the sealing part (221) tends to be sealed to the valve seat (20).

7. A combined valve for a hydraulic module and buffer tank according to claim 6, characterized in that, The driving component is a handle (30). The inner wall of the handle (30) has a radially convex ring (301). The outer end of the valve stem (3) passes through the convex ring (301) and is threaded with a nut (31). The valve stem (3) is fitted with a circumferentially fixed washer (32). The washer (32) is located below the convex ring (301) and is circumferentially fixed to the inner wall of the handle (30).

8. A combination valve for a hydraulic module and buffer tank according to claim 1, characterized in that, The driving component is an electric actuator, and the output end of the electric actuator is fixedly connected to the outer end of the valve stem (3).

Images