Pressure balance valve assembly

Abstract

The utility model discloses a pressure balance valve assembly which comprises an inner valve body and an outer valve body, the inner valve body is provided with a first inner valve body port and a second inner valve body port, the two first inner valve body ports are located at the two ends of the inner valve body respectively, and the second inner valve body port is located between the two first inner valve body ports and sealed through an end cover; a valve plate is installed in the inner valve body, the valve plate is used for adjusting the opening and closing of the first ports of the two inner valve bodies, and the valve plate is fixedly connected with a valve rod; a sliding guide hole is formed in the end cover, and the valve rod penetrates through the sliding guide hole and forms sealed sliding connection; the outer valve body is formed on the outer side of the inner valve body in an injection molding mode and is embedded with the outer contour shape of the inner valve body. The outer valve body comprises a first outer valve body port and a second outer valve body port. According to the utility model, the plurality of convex and concave structures are arranged on the combination surface of the inner valve body and the outer valve body to form a mutually embedded structure, so that the mutual combination strength of the inner valve body and the outer valve body can be improved.

Description

Technical Field

[0001] This utility model relates to valve devices, and more specifically, to a pressure balancing valve assembly. Background Technology

[0002] Pressure balancing valves need to withstand a certain internal water pressure, therefore, they require specific strength performance. Currently, most pressure balancing valves are made of metal, offering good valve body strength, but their weight is relatively large due to material limitations. Alternatively, some pressure balancing valves are injection molded from polymer plastics, resulting in a lighter weight; however, their pressure-bearing strength is significantly reduced, and the performance of the valve body's inner surface cannot meet the requirements of metal valve bodies.

[0003] Therefore, a new solution is needed to address this problem. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pressure balancing valve assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pressure balancing valve assembly, comprising an inner valve body and an outer valve body, wherein the inner valve body has two inner valve body ports one and two inner valve body ports two, the two inner valve body ports one being located at both ends of the inner valve body respectively, and the inner valve body port two being located between the two inner valve body ports one and closed by an end cap;

[0006] A valve plate is installed inside the inner valve body. The valve plate is used to adjust the on / off state of the two inner valve body ports. A valve stem is fixedly connected to the valve plate. The end cover has a guide hole. The valve stem passes through the guide hole and forms a sealed sliding connection.

[0007] The outer valve body is injection molded on the outside of the inner valve body and fits into the outer contour shape of the inner valve body; the outer valve body includes two outer valve body ports one and two outer valve body ports two, the two outer valve body ports one are respectively connected to the two inner valve body ports one, and the outer valve body ports two are respectively connected to the inner valve body ports two.

[0008] The present invention is further configured such that: the inner valve body port 1 has an end face 1, and the end face 1 has an annular groove 1; the outer valve body has an end face 3 formed inside, and the end face 3 abuts against the end face 1; the end face 1 has an annular protrusion 1, and the annular protrusion 1 and the annular groove 1 are fitted together.

[0009] The present invention is further configured such that a cylindrical portion is fixedly connected to the inner circumference of the end face three, the cylindrical portion extends into the inner circumference of the inner valve body port one, and the cylindrical portion and the inner circumference of the inner valve body port one are mutually fitted.

[0010] The present invention is further configured such that an annular groove is provided on the inner circumference of the inner valve body port one, and an annular protrusion is fixedly connected to the outer circumference of the cylindrical part, and the annular protrusion and the annular groove are fitted together.

[0011] The present invention is further configured such that the cross-section of the second annular groove is dovetail-shaped, and the width gradually increases towards the outer periphery.

[0012] The present invention is further configured such that an annular groove is provided on the outer periphery of the inner valve body port two near the inner valve body port one; an annular protrusion is formed on the inner side of the outer valve body, and the annular protrusion and the annular groove are interlocked.

[0013] The present invention is further configured such that a plurality of annular grooves are formed on the outer periphery of the inner valve body port 2, and a plurality of annular protrusions are formed on the inner periphery of the outer valve body port 2, wherein the annular protrusions correspond one-to-one with the annular grooves and are interlocked with each other.

[0014] The present invention is further configured such that the inner valve body port two has an end face two, and the outer valve body port two has an end face four, the end face two and the end face four are flush with each other; the end cover includes a connecting part, the connecting part is fixedly connected to the inner valve body port two, and a seal is achieved by a sealing ring; a retaining ring is fixedly connected to the outer periphery of the end cover, the retaining ring abutting against the end face two and the end face four.

[0015] The present invention is further configured such that an annular protrusion is formed at the middle position of the outer periphery of the inner valve body, and an annular groove is formed at the corresponding position inside the outer valve body, and the annular groove and the annular protrusion are fitted together.

[0016] The present invention is further configured to include an electric actuator, the electric actuator including an electric telescopic end connected to the valve stem for driving the regulating valve plate; the inner valve body is provided with a pressure sensor for detecting water pressure.

[0017] In summary, this utility model has the following beneficial effects:

[0018] The pressure balancing valve body adopts a double-layer structure. The inner valve body is made of metal, which improves the pressure-bearing capacity of the valve body and allows the metal material to directly contact the liquid inside the valve, giving the inner surface of the valve body better surface properties. On the other hand, the outer valve body is injection molded from high-molecular plastic material. The outer valve body is integrally formed and fixed with the inner valve body, allowing the outer and inner valve bodies to jointly bear the pressure inside the valve. This allows the inner valve body to be made thinner, and the use of a lower-density plastic for strength compensation, resulting in a lightweight and high-strength pressure balancing valve as a whole.

[0019] Furthermore, several protrusions and recesses are formed on the mating surfaces of the inner and outer valve bodies to create an interlocking structure, thereby enhancing the interlocking strength between the inner and outer valve bodies. Attached Figure Description

[0020] Figure 1 This is a perspective view of a pressure balancing valve assembly in Embodiment 1;

[0021] Figure 2 This is a perspective sectional view of a pressure balancing valve assembly in Embodiment 1;

[0022] Figure 3 This is an exploded cross-sectional view of a pressure balancing valve assembly in Embodiment 1;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0024] Reference numerals: Inner valve body 1; Inner valve body port 11; Inner valve body port 2 12; End face 100; Annular groove 101; Annular groove 2 102; Annular groove 3 103; Annular groove 4 104; End face 2 105; Annular protrusion 5 106; Outer valve body 2; Outer valve body port 1 21; Outer valve body port 2 22; End face 3 200; Annular protrusion 1 201; Cylindrical part 202; Annular protrusion 2 203; Annular protrusion 3 204; Annular protrusion 4 205; End face 4 206; Annular groove 5 207; End cap 3; Guide hole 31; Connecting part 32; Retaining ring part 33; Valve plate 4; Valve stem 41. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] This embodiment discloses a pressure balancing valve assembly, referring to... Figures 1-4 As shown, the valve includes an inner valve body 1 and an outer valve body 2. The inner valve body 1 is made of metal and serves as the inner layer of the valve body. The outer valve body 2 is made of plastic and is integrally molded on the outside of the inner valve body 1. After injection molding, a two-layer structure is formed, with the inner pressure-bearing part being made of metal and the outer layer forming a protective layer. This allows the entire valve body to meet strength requirements and achieve a certain degree of weight reduction.

[0028] The inner valve body 1 has two inner valve body ports 11 and 12. The two inner valve body ports 11 are located at both ends of the inner valve body 1, allowing liquid to flow in and out from both sides of the valve body. The inner valve body port 12 is located between the two inner valve body ports 11 and is formed on the outer side wall of the middle section of the valve body for mounting actuators such as the valve plate 4 and valve stem 41. The inner valve body port 12 is closed by an end cap 3.

[0029] A valve plate 4 is installed inside the inner valve body 1. The shape of the inner valve body 1 is adapted to the valve plate 4, and they can be assembled to form a gate valve-like structure. The valve plate 4 can be used to adjust the on / off state of the two inner valve body ports 11.

[0030] A valve stem 41 is fixedly connected to the valve plate 4. A guide hole 31 is provided in the middle of the end cover 3, corresponding to the position of the valve stem 41. The valve stem 41 passes through the guide hole 31, and a sealing ring is installed at the connection point to form a sealed sliding connection. When adjustment is required, an external drive component can drive the valve stem 41 to move, which in turn drives the valve plate 4 to adjust, thereby adjusting the two inner valve body ports 11 of the inner valve body 1. By adjusting the opening degree of the two inner valve body ports 11, the flow of water can be adjusted.

[0031] Reference Figure 2 , Figure 3 As shown, the outer valve body 2 is injection molded on the outside of the inner valve body 1 and fits into the outer contour shape of the inner valve body 1. The outer valve body 2 includes two outer valve body ports 1-21 and two outer valve body ports 22. The two outer valve body ports 1-21 are respectively connected to the two inner valve body ports 1-11, and the outer valve body ports 2-22 are respectively connected to the inner valve body ports 2-12.

[0032] In order to improve the connection strength between the inner valve body 1 and the outer valve body 2, several protrusions and depressions are made on the mating surfaces of the inner valve body 1 and the outer valve body 2 to form an interlocking structure, thereby improving the mutual connection strength between the inner valve body 1 and the outer valve body 2.

[0033] Reference Figure 3 , Figure 4 As shown, the inner valve body port 11 has an end face 100, and the end face 100 has an annular groove 101. The outer valve body 2 has an end face 200 inside, which abuts against the end face 100 and the two are tightly fitted and fixed together. The end face 100 has an annular protrusion 201, which fits into the annular groove 101 to achieve an axial sleeve fit.

[0034] A cylindrical portion 202 is fixedly connected to the inner circumference of end face 200. The cylindrical portion 202 extends into the inner circumference of the inner valve body port 11, and the cylindrical portion 202 and the inner circumference of the inner valve body port 11 are interlocked. The inner circumferential contour of the cylindrical portion 202 matches the contour of the valve cavity of the inner valve body 1, which can form a smooth communication structure between the inner valve body port 11 and the outer valve body port 21, thereby allowing water to flow relatively smoothly. Moreover, the two cylindrical portions 202 can press against the stepped surfaces on both sides of the inner valve body 1, forming axial pressure limiting on both sides, maintaining the axial structural stability of the inner valve body 1 and the outer valve body 2.

[0035] Furthermore, an annular groove 102 is formed on the inner circumference of the inner valve body port 11, and an annular protrusion 203 is fixedly connected to the outer circumference of the cylindrical portion 202. The annular protrusion 203 and the annular groove 102 are interlocked. The annular protrusion 203 and the annular groove 102 can form an interlocking structure for stable positioning.

[0036] Furthermore, the cross-section of the second annular groove 102 is dovetail-shaped, and its width gradually increases towards the outer periphery. After the second annular protrusion 203 is embedded in the second annular groove 102, it can form a structure with a wide groove and a narrow groove opening, thereby preventing the two from separating from each other, increasing the volume of the second annular protrusion 203 embedded in the second annular groove 102, and thus improving the interlocking strength performance of the two.

[0037] An annular groove 103 is formed on the outer periphery of the inner valve body port 2 12 near the inner valve body port 11. An annular protrusion 204 is formed on the inner side of the outer valve body 2, and the annular protrusion 204 and the annular groove 103 are fitted together. The outer periphery of the annular groove 103 can also be set as an irregular structure, and the shape of the annular protrusion 204 will also form a mutually adaptable structure, thereby forming an axial rotation limit and improving the strength and stability of the mating surface.

[0038] Furthermore, several annular grooves 104 are formed on the outer periphery of the inner valve body port 22, and several annular protrusions 205 are formed on the inner periphery of the outer valve body port 22. The annular protrusions 205 correspond one-to-one with the annular grooves 104 and are interlocked with each other. The multiple annular grooves and annular protrusions form an interlocking structure, thereby forming multiple pressure-bearing structures in the axial direction of the inner valve body port 22 to maintain the strength performance of the connection joint.

[0039] The inner valve body port 12 has an end face 105, and the outer valve body port 22 has an end face 206. After the inner valve body 1 and the outer valve body 2 are injection molded together, the end faces 105 and 206 are flush with each other.

[0040] Reference Figure 2 , Figure 3As shown, the end cap 3 includes a connecting part 32, which is fixedly connected to the inner valve body port 12 and sealed by a sealing ring. Specifically, the connecting part 32 can be fixed by a threaded connection.

[0041] A retaining ring 33 is fixedly connected to the outer periphery of the end cover 3. After the end cover 3 is installed, the surface of the retaining ring 33 can abut against the end face 105 and the end face 206, thereby achieving axial pressure positioning and maintaining the stability of the installation structure of the end cover 3. Furthermore, the retaining ring 33 can be bonded and fixed to the end face 206, thereby forming a limiting fixation between the connecting part 32 and the outer valve body 2, which can prevent the end cover 3 from becoming loose.

[0042] Furthermore, an annular protrusion 5 106 is formed at the middle position of the outer periphery of the inner valve body 1, and an annular groove 5 207 is formed at the corresponding position inside the outer valve body 2. The annular groove 5 207 and the annular protrusion 5 106 are interlocked. On the one hand, the annular protrusion 5 106 protrudes from the outer periphery of the inner valve body 1, which can increase the strength of the middle section of the inner valve body 1. On the other hand, the annular groove 5 207 and the annular protrusion 5 106 can form a supplementary connection limit at the middle position of the outer periphery of the inner valve body 1, further improving the connection strength between the inner valve body 1 and the outer valve body 2.

[0043] Example 2

[0044] This embodiment discloses a pressure balancing valve assembly. Based on the first embodiment described above, it further includes an electric actuator and a pressure sensor. The electric actuator includes an electric telescopic end, which is connected to the valve stem 41 and is used to drive the regulating valve plate 4. The inner valve body 1 is equipped with a pressure sensor, which can be specifically installed in the valve cavity of the pressure balancing valve, generally on the inlet side. The pressure sensor can detect water pressure.

[0045] The pressure sensor detects the water pressure inside the valve chamber. Based on the water pressure, the electric actuator drives the valve plate 4 to adjust its movement, thereby controlling the flow rate on the outlet side of the pressure balancing valve. Specifically, when the pressure sensor detects that the water pressure on the inlet side of the balancing valve is too high, the electric actuator controls the valve plate 4 to adjust appropriately towards the closed direction, thus reducing the outlet flow of the pressure balancing valve and preventing excessive water output. Conversely, when the pressure sensor detects that the water pressure on the inlet side of the balancing valve is low, the electric actuator controls the valve plate 4 to adjust appropriately towards the closed direction, thus increasing the outlet flow of the pressure balancing valve and maintaining the output water flow.

[0046] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A pressure balancing valve assembly, characterized in that, It includes an inner valve body (1) and an outer valve body (2). The inner valve body (1) has two inner valve body ports one (11) and two inner valve body ports two (12). The two inner valve body ports one (11) are located at both ends of the inner valve body (1), and the inner valve body ports two (12) are located between the two inner valve body ports one (11) and are closed by end caps (3). The inner valve body (1) is equipped with a valve plate (4), which is used to adjust the opening and closing of the two inner valve body ports (11). The valve plate (4) is fixedly connected to a valve stem (41). The end cover (3) is provided with a guide hole (31), and the valve stem (41) passes through the guide hole (31) to form a sealed sliding connection. The outer valve body (2) is injection molded on the outside of the inner valve body (1) and fits into the outer contour shape of the inner valve body (1); the outer valve body (2) includes two outer valve body ports one (21) and two outer valve body ports two (22), the two outer valve body ports one (21) are respectively connected to the two inner valve body ports one (11), and the outer valve body ports two (22) are respectively connected to the inner valve body ports two (12).

2. The pressure balancing valve assembly according to claim 1, characterized in that, The inner valve body port 1 (11) has an end face 1 (100), and the end face 1 (100) has an annular groove 1 (101); the outer valve body (2) has an end face 3 (200) formed inside, and the end face 3 (200) abuts against the end face 1 (100); the end face 1 (100) has an annular protrusion 1 (201), and the annular protrusion 1 (201) and the annular groove 1 (101) are fitted together.

3. The pressure balancing valve assembly according to claim 2, characterized in that, A cylindrical part (202) is fixedly connected to the inner circumference of the end face three (200). The cylindrical part (202) extends into the inner circumference of the inner valve body port one (11). The cylindrical part (202) and the inner circumference of the inner valve body port one (11) are interlocked.

4. The pressure balancing valve assembly according to claim 3, characterized in that, The inner circumference of the inner valve body port one (11) is provided with an annular groove two (102), and the outer circumference of the cylindrical part (202) is fixedly connected with an annular protrusion two (203), and the annular protrusion two (203) and the annular groove two (102) are fitted together.

5. The pressure balancing valve assembly according to claim 4, characterized in that, The cross-section of the second annular groove (102) is dovetail-shaped, and its width gradually increases towards the outer periphery.

6. The pressure balancing valve assembly according to claim 1, characterized in that, The outer periphery of the inner valve body port 2 (12) near the inner valve body port 1 (11) has an annular groove 3 (103); the inner side of the outer valve body (2) has an annular protrusion 3 (204), and the annular protrusion 3 (204) and the annular groove 3 (103) are interlocked.

7. The pressure balancing valve assembly according to claim 1, characterized in that, The outer periphery of the inner valve body port 2 (12) is provided with a plurality of annular grooves 4 (104), and the inner periphery of the outer valve body port 2 (22) is provided with a plurality of annular protrusions 4 (205). The annular protrusions 4 (205) correspond one-to-one with the annular grooves 4 (104) and fit together.

8. The pressure balancing valve assembly according to claim 1, characterized in that, The inner valve body port 2 (12) has an end face 2 (105), and the outer valve body port 2 (22) has an end face 4 (206). The end faces 2 (105) and 4 (206) are flush with each other. The end cover (3) includes a connecting part (32), which is fixedly connected to the inner valve body port 2 (12) and sealed by a sealing ring. A retaining ring part (33) is fixedly connected to the outer periphery of the end cover (3), and the retaining ring part (33) abuts against the end face 2 (105) and the end face 4 (206).

9. The pressure balancing valve assembly according to claim 1, characterized in that, The inner valve body (1) has an annular protrusion (106) at the middle position of its outer periphery, and the outer valve body (2) has an annular groove (207) at the corresponding position inside, and the annular groove (207) and the annular protrusion (106) are fitted together.

10. The pressure balancing valve assembly according to claim 1, characterized in that, It also includes an electric actuator, which includes an electric telescopic end connected to the valve stem (41) for driving the regulating valve plate (4); the inner valve body (1) is provided with a pressure sensor for detecting water pressure.

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