Regulating valve body assembly with corrugated pipe structure

Abstract

The utility model provides an adjusting valve body assembly with a corrugated pipe structure, and relates to the field of electromagnetic valves.The adjusting valve body assembly with the corrugated pipe structure comprises a valve body, an upper valve rod, a corrugated pipe mounting seat, a corrugated pipe, a pressing plate, a lower valve rod, an upper valve seat, a lower valve seat, a valve plate and a baffle, a first channel is formed in the lower end of the upper valve rod, and a second channel is formed in the lower end of the lower valve seat; a second channel is arranged at the upper end of the lower valve rod, and the first channel is in butt joint with the second channel; under the action of the upper valve rod and the lower valve rod, the pressure p1 acting on the upper side of the valve plate is equal to the pressure p1 acting on the lower side of the corrugated pipe along with up-down compression or expansion of the corrugated pipe; pressure P2 acting on the lower side of the valve plate enters the corrugated pipe through the first channel and the second channel, and an acting force which is equal to the P2 in size and opposite in direction is generated in the corrugated pipe, so that the pressure in the valve body is completely counteracted, and differential pressure dynamic balance is achieved.

Description

Technical Field

[0001] This application relates to the field of solenoid valves, and more specifically, to a regulating valve body assembly with a bellows structure. Background Technology

[0002] The process of controlling the valve opening by using multiple metal pipes connected to the outside to form a closed loop is called an automatic balancing system. It is a valve composed of a retractable bellows and elastic seals. However, the existing bellows control valve has the problem of complex structure. When the structure is simple, the reliability is poor. Therefore, it is necessary to improve the current solenoid valve. Summary of the Invention

[0003] The purpose of this application is to provide a regulating valve body assembly with a bellows structure, which can solve the above-mentioned technical problems.

[0004] This application provides a regulating valve body assembly with a bellows structure, including a valve body, an upper valve stem, a bellows mounting seat, a bellows, a pressure plate, a lower valve stem, an upper valve seat, a lower valve seat, a valve plate, and a baffle. The upper valve stem passes through the upper end of the valve body and extends into the interior of the valve body. The bellows mounting seat is disposed at the outer end of the upper valve stem, and the upper end of the bellows is installed in the bellows mounting seat. The upper end of the lower valve stem is connected to the lower end of the upper valve stem. The upper valve seat and the lower valve seat are connected from the upper... The upper valve stem is fitted with a pressure plate at its lower end, and the lower end of the bellows abuts against the pressure plate. The lower valve seat is located below the upper valve seat. The valve plate is fitted onto the outer end of the lower valve stem and is located between the upper and lower valve seats. The baffle is located between the valve plate and the lower valve seat. The lower end of the upper valve stem has a first channel, and the upper end of the lower valve stem has a second channel. The first channel and the second channel are connected.

[0005] Preferably, a copper sleeve assembly is provided between the upper valve stem and the valve body. The copper sleeve assembly includes a copper sleeve and a copper sleeve mounting base. The copper sleeve mounting base is located at the outer end of the upper valve stem, and the copper sleeve is installed between the upper valve stem and the copper sleeve mounting base.

[0006] Preferably, a welding base is provided between the corrugated pipe mounting base and the corrugated pipe, and the welding base is welded to the corrugated pipe mounting base.

[0007] Preferably, a guide sleeve is provided between the lower valve stem and the lower valve seat.

[0008] Preferably, the thickness of the bottom of the bellows is greater than the thickness of the bellows wall.

[0009] Preferably, the corrugated pipe is made of stainless steel or copper, and the welding base is made of stainless steel or copper.

[0010] Preferably, the upper valve stem and the lower valve stem are connected by a thread.

[0011] Preferably, the welding base is provided with a welding groove in the middle, and the upper end of the corrugated pipe is soldered or argon arc welded into the welding groove.

[0012] The beneficial effects of this utility model are:

[0013] This utility model provides a regulating valve body assembly with a bellows structure, including a valve body, an upper valve stem, a bellows mounting seat, a bellows, a pressure plate, a lower valve stem, an upper valve seat, a lower valve seat, a valve plate, and a baffle. The upper valve stem passes through the upper end of the valve body and extends into the interior of the valve body. The bellows mounting seat is disposed on the outer end of the upper valve stem, and the upper end of the bellows is installed inside the bellows mounting seat. The upper end of the lower valve stem is connected to the lower end of the upper valve stem. The upper valve seat and the lower valve seat are sequentially sleeved on the lower valve stem from top to bottom. A pressure plate is disposed on the lower side of the upper valve stem, and the lower end of the bellows abuts against the pressure plate. The lower valve seat is disposed below the upper valve seat, and the valve plate is sleeved on the lower valve seat. At the outer end of the stem, the valve plate is located between the upper valve seat and the lower valve seat. The baffle is disposed between the valve plate and the lower valve seat. The lower end of the upper valve stem is provided with a first channel, and the upper end of the lower valve stem is provided with a second channel. The first channel and the second channel are connected. Under the action of the upper and lower valve stems, the valve plate of this invention compresses or expands as the bellows moves up and down. The pressure p1 acting on the upper side of the valve plate is equal to the pressure p2 acting on the lower side of the bellows. The pressure p2 acting on the lower side of the valve plate enters the bellows through the first channel and the second channel, and generates a force in the bellows that is equal in magnitude and opposite in direction to p2. In this way, the pressures inside the valve body completely cancel each other out, achieving dynamic pressure balance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the upper valve stem of this utility model;

[0017] Figure 3 This is a schematic diagram of the corrugated pipe structure of this utility model;

[0018] Figure 4 This is a schematic diagram of another corrugated pipe structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the welding base structure of this utility model;

[0020] Figure 6 This is a schematic diagram of another welding base structure of this utility model.

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Valve body; 2. Upper valve stem; 3. Bellows mounting seat; 4. Bellows; 5. Pressure plate; 6. Lower valve stem; 7. Upper valve seat; 8. Lower valve seat; 9. Valve plate; 10. Baffle; 11. Pressure plate; 12. First channel; 13. Second channel; 14. Copper sleeve assembly; 15. Copper sleeve; 16. Copper sleeve mounting base; 17. Welding base; 18. Guide sleeve; 19. Welding groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] like Figure 1-6As shown, an electromagnetic regulating valve with a bellows 4 structure includes a valve body 1, an upper valve stem 2, a bellows mounting seat 3, a bellows 4, a pressure plate 115, a lower valve stem 6, an upper valve seat 7, a lower valve seat 8, a valve plate 9, and a baffle 10. The upper valve stem 2 passes through the upper end of the valve body 1 and extends into the valve body 1. The bellows mounting seat 3 is disposed at the outer end of the upper valve stem 2. The upper end of the bellows 4 is installed inside the bellows mounting seat 3. The upper end of the lower valve stem 6 is connected to the lower end of the upper valve stem 2. The upper valve seat 7 and the lower valve seat 8 are sequentially sleeved on the lower valve stem 6 from top to bottom. A pressure plate 115 is disposed on the lower side of the upper valve stem 2. The lower end of the bellows 4 abuts against the pressure plate 115. The lower valve seat 8 is disposed below the upper valve seat 7. The valve plate 9 is sleeved on the lower valve stem. At the outer end of the valve plate 9, the valve plate 9 is located between the upper valve seat 7 and the lower valve seat 8. The baffle 10 is disposed between the valve plate 9 and the lower valve seat 8. The lower end of the upper valve stem 2 is provided with a first channel 12, and the upper end of the lower valve stem 6 is provided with a second channel 13. The first channel 12 and the second channel 13 are connected. Under the action of the upper valve stem 2 and the lower valve stem 6, the valve plate 9 of this utility model compresses or expands with the bellows 4. The pressure p1 acting on the upper side of the valve plate 9 is equal to the pressure p2 acting on the lower side of the bellows 4. The pressure p2 acting on the lower side of the valve plate 9 enters the bellows 4 through the first channel 12 and the second channel 13, and generates a force in the bellows 4 that is equal in magnitude and opposite in direction to p2. In this way, the pressure inside the valve body 1 completely cancels each other out, realizing dynamic pressure balance.

[0030] like Figure 1 As shown, in this embodiment, a copper sleeve 15 assembly 14 is provided between the upper valve stem 2 and the valve body 1. The copper sleeve 15 assembly 14 includes a copper sleeve 15 and a copper sleeve mounting base 16. The copper sleeve mounting base 16 is disposed at the outer end of the upper valve stem 2, and the copper sleeve 15 is installed between the upper valve stem 2 and the copper sleeve mounting base 16. Specifically, in use, lubricant can be added to the copper sleeve 15 and the copper sleeve mounting base 16. The copper sleeve 15 can lubricate and guide the upper valve stem 2, making the upper valve stem 2 move more smoothly up and down, and preventing the upper valve stem 2 from shifting left and right.

[0031] like Figure 3-6As shown, in this embodiment, a welding base 17 is provided between the corrugated pipe mounting base 3 and the corrugated pipe 4. The welding base 17 is welded to the corrugated pipe mounting base 3. A welding groove 19 is provided in the middle of the welding base 17. The upper end of the corrugated pipe 4 is welded to the welding groove 19 by soldering or argon arc welding. The corrugated pipe 4 is made of stainless steel or copper, and the welding base 17 is also made of stainless steel or copper. Specifically, the connection between the copper corrugated pipe 4 and the copper welding base 17 is achieved by soldering. An appropriate amount of solder is evenly placed in the welding groove 19, and the upper end of the corrugated pipe 4 is inserted into the welding groove 19. Heating it to a suitable temperature will weld the two together. When the connection between the stainless steel corrugated pipe 4 and the stainless steel welding base 17 is achieved by argon arc welding, the upper end of the corrugated pipe 4 is completely fitted onto the welding base 17, and the joint is fully welded by argon arc welding.

[0032] like Figure 1 As shown, in this embodiment, a guide sleeve 18 is provided between the lower valve stem 6 and the lower valve seat 8. The guide sleeve 18 of this utility model is used to guide and limit the lower valve stem 6 to prevent the lower valve stem 6 from shifting left or right.

[0033] like Figure 1 As shown, in this embodiment, the thickness of the bottom of the corrugated pipe 4 is greater than the thickness of the corrugated wall of the corrugated pipe 4; the thickened bottom can ensure that the bottom plane will not deform when subjected to external force; the thinner corrugated wall can achieve better elasticity, so that the corrugated pipe 4 can be easily compressed and expanded.

[0034] like Figure 1 , 2 As shown in this embodiment, to facilitate the assembly of the upper valve stem 2 and the lower valve stem 6, the upper valve stem 2 and the lower valve stem 6 are connected by threads.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A regulating valve body assembly with a bellows structure, characterized in that: The valve includes a valve body, an upper valve stem, a bellows mounting base, a bellows, a pressure plate, a lower valve stem, an upper valve seat, a lower valve seat, a valve plate, and a baffle. The upper valve stem passes through the upper end of the valve body and extends into the valve body. The bellows mounting base is located at the outer end of the upper valve stem, and the upper end of the bellows is installed inside the bellows mounting base. The upper end of the lower valve stem is connected to the lower end of the upper valve stem. The upper valve seat and the lower valve seat are sequentially sleeved on the lower valve stem from top to bottom. A pressure plate is provided on the lower side of the upper valve stem. The lower end of the bellows abuts against the pressure plate. The lower valve seat is located below the upper valve seat. The valve plate is sleeved on the outer end of the lower valve stem and is located between the upper valve seat and the lower valve seat. The baffle is located between the valve plate and the lower valve seat. A first channel is provided at the lower end of the upper valve stem, and a second channel is provided at the upper end of the lower valve stem. The first channel and the second channel are connected.

2. The valve body assembly with a bellows structure according to claim 1, characterized in that: A copper sleeve assembly is provided between the upper valve stem and the valve body. The copper sleeve assembly includes a copper sleeve and a copper sleeve mounting base. The copper sleeve mounting base is located at the outer end of the upper valve stem, and the copper sleeve is installed between the upper valve stem and the copper sleeve mounting base.

3. The valve body assembly with a bellows structure according to claim 1, characterized in that: A welding base is provided between the corrugated pipe mounting seat and the corrugated pipe, and the welding base is welded to the corrugated pipe mounting seat.

4. The valve body assembly with a bellows structure according to claim 1, characterized in that: A guide sleeve is provided between the lower valve stem and the lower valve seat.

5. The valve body assembly with a bellows structure according to claim 1, characterized in that: The thickness of the bottom of the bellows is greater than the thickness of the bellows wall.

6. A regulating valve body assembly with a bellows structure according to claim 2, characterized in that: The corrugated pipe is made of stainless steel or copper, and the welding base is also made of stainless steel or copper.

7. A regulating valve body assembly with a bellows structure according to claim 1, characterized in that: The upper valve stem and the lower valve stem are connected by threads.

8. A regulating valve body assembly with a bellows structure according to claim 2, characterized in that: A welding groove is provided in the middle of the welding base, and the upper end of the corrugated pipe is welded to the welding groove by soldering or argon arc welding.

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