Cage type single-seat regulating valve

Abstract

The utility model relates to the technical field of valve bodies, and discloses a cage type single-seat adjusting valve which comprises a valve body, a water inlet and a water outlet are formed in the two sides of the valve body, a valve cover is arranged at the upper end of the valve body, a valve rod is arranged in the valve cover and connected in the valve cover in a sliding mode, and a valve element is fixedly connected to the bottom of the valve rod. The guide groove and the inner cavity are formed in the valve body, the guide groove is in sliding connection with the valve element, the valve cage is arranged between the inner cavity and the valve element, the six sets of throttling holes are formed in the valve cage, and every two throttling holes form one set and are symmetrically distributed up and down and used for adjusting the flow of fluid. The device is reasonable in structure, easy and convenient to manufacture, stable, reliable and suitable for various industrial fields.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to a cage-type single-seat regulating valve. Background Art

[0002] In fluid control systems, control valves are common devices used to control the flow, pressure or temperature of fluids (liquids or gases). In many industrial and manufacturing processes, the fluid flow needs to be precisely adjusted to meet specific process requirements. Currently, there are various types of control valves on the market, among which cage-type single-seat control valves are widely used due to their simple structure and good adjustment flexibility.

[0003] The existing cage-type single-seat regulating valve usually includes components such as a valve body, a valve cover, a valve stem and a valve core. By adjusting the opening of the valve, the fluid flow can be controlled. However, some cage-type single-seat regulating valves in the prior art have some shortcomings in actual use. For example, the sealing performance may not be ideal, resulting in fluid leakage; the structure is complex and difficult to maintain and install; or the stability in high-pressure and high-temperature environments needs to be improved.

[0004] The application number is CN202110503273.8, which discloses a balanced cage-type single-seat regulating valve, including an inlet, one side of the inlet is fixedly connected with an outlet, the top of the outlet is fixedly connected with a balancing chamber, the middle of the balancing chamber is movably connected with a valve core, the top of the valve core is provided with a threaded sleeve, and a valve stem is movably connected with the threaded sleeve, the top of the balancing chamber is fixedly installed with a sealing ring, the middle of the valve stem is movably connected with a limit plate, the bottom end of the limit plate is fixedly installed with an auxiliary spring, and the two sides of the limit plate are movably connected to the limit rod.

[0005] But there are shortcomings:

[0006] Difficult to disassemble and maintain, lack of detachable and maintainable parts, the valve includes many moving parts, such as valve core, valve stem, limit plate, etc. These parts may be worn during use and require more frequent maintenance and replacement. If the valve design requires special tools or professional skills for maintenance, the maintenance process will be more challenging and may require additional training or specific tools, increasing the cost and difficulty of maintenance. Utility Model Content

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a cage-type single-seat regulating valve, comprising a valve body, wherein water inlets and water outlets are arranged on both sides of the valve body, a valve cover is arranged on the upper end of the valve body, a valve stem is arranged in the valve cover and is slidably connected in the valve cover, and a valve core is fixedly connected to the bottom of the valve stem.

[0009] Furthermore, an array of flange holes is provided at the connection between the water inlet and the water outlet and the outside.

[0010] Furthermore, the valve body and the valve cover are connected by six groups of first bolts, a first pressing ring is crimped at the bottom of the first bolts, and a sealing gasket and a stepped sealing gasket are provided between the valve body and the valve cover.

[0011] Furthermore, a fixing ring is provided on the top of the valve cover, the fixing ring is connected to the valve cover via a second bolt, a second pressing ring is crimped on the bottom of the second bolt, and a sealing rubber ring is provided between the fixing ring and the valve stem.

[0012] Furthermore, a circular groove is provided at the upper end of the valve cover, a spring is provided in the circular groove, the spring telescopes in the circular groove, and the spring is sleeved on the outer side of the valve stem.

[0013] Furthermore, six groups of inner through grooves are evenly distributed in the valve core, and two outer through grooves are provided between the six groups of inner through grooves and the outer surface of the valve core, and the two outer through grooves are symmetrically distributed above and below the inner through grooves.

[0014] Furthermore, a guide groove and an inner cavity are provided inside the valve body, the guide groove is slidably connected to the valve core, a valve cage is provided between the inner cavity and the valve core, and the valve cage is provided with six groups of throttle holes evenly distributed, and the throttle holes are grouped in two and symmetrically distributed above and below the valve cage.

[0015] The utility model has the following beneficial effects:

[0016] The utility model adopts a sealing gasket and a stepped sealing gasket between the valve body and the valve cover, and a sealing rubber ring between the fixing ring and the valve stem, which helps to reduce the risk of leakage and improve the sealing performance of the valve.

[0017] The valve body and the valve cover of the utility model are connected by six groups of first bolts, and the valve cover at the top is connected to the valve stem by second bolts. This multi-bolt connection method helps to ensure the firm connection of various parts of the valve body, increases the reliability of the entire structure and the convenience of disassembly and maintenance.

[0018] The utility model has a circular groove and a spring on the upper end of the valve cover, and the spring is connected to the valve stem, so that the valve stem can move telescopically in the valve cover, which is helpful for the smooth operation of the valve and can provide moderate elastic support when needed.

[0019] The valve core of the utility model is provided with six groups of inner through grooves and two outer through grooves in one group, which is helpful for the smooth regulation of the fluid and the stability of the valve.

[0020] The six groups of throttling holes in the valve cage of the utility model are evenly distributed, which helps to more evenly adjust the fluid flow rate and improve the accuracy and control performance of the valve.

[0021] The design of multiple bolts in the utility model simplifies the disassembly process. The multiple bolts can be loosened gradually to loosen the connection, so that the maintenance personnel can disassemble and reassemble the valve more easily and gradually, reducing the complexity of maintenance.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the side view structure of the valve core of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the valve core of the utility model viewed from above;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] In the figure: 1. valve body; 2. water inlet; 3. water outlet; 4. flange hole; 5. valve cover; 6. sealing gasket; 7. first bolt; 701. first pressure ring; 8. valve stem; 9. fixing ring; 10. second bolt; 1001. second pressure ring; 11. sealing rubber ring; 12. circular groove; 13. spring; 14. stepped sealing gasket; 15. valve core; 16. inner through groove; 17. outer through groove; 18. valve cage; 19. throttle hole; 20. guide groove; 21. inner cavity. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-Figure 4As shown, the utility model is a cage-type single-seat regulating valve, comprising a valve body 1, wherein a water inlet 2 and a water outlet 3 are provided on both sides of the valve body 1, a valve cover 5 is provided on the upper end of the valve body 1, a valve stem 8 is provided in the valve cover 5 and is slidably connected in the valve cover 5, and a valve core 15 is fixedly connected to the bottom of the valve stem 8.

[0032] The connection between the water inlet 2 and the water outlet 3 and the outside is provided with an array of flange holes 4. The regulating valve can be easily connected to the external pipeline system, which is convenient for installation and disassembly.

[0033] The valve body 1 and the valve cover 5 are connected by six groups of first bolts 7, and the first pressure ring 701 is crimped at the bottom of the first bolts 7. A sealing gasket 6 and a stepped sealing gasket 14 are provided between the valve body 1 and the valve cover 5. The design of the bolt connection makes it relatively easy to disassemble the connection between the valve body 1 and the valve cover 5, which helps to quickly open the valve when maintenance, replacement of parts or overhaul are required, and ensures the accuracy and reliability of the connection during reassembly. The multiple groups of bolts provide uniform force distribution to ensure that the connection between the valve body 1 and the valve cover 5 is firm and reliable. The sealing gasket 6 and the stepped sealing gasket 14 help prevent fluid leakage. The sealing gasket 6 can fill the gap at the connection, ensure that the connection part fits tightly, and improve the sealing performance of the valve.

[0034] A fixing ring 9 is provided on the top of the valve cover 5, and the fixing ring 9 is connected to the valve cover 5 by a second bolt 10. A second pressing ring 1001 is crimped on the bottom of the second bolt 10, and a sealing rubber ring 11 is provided between the fixing ring 9 and the valve stem 8. The fixing ring 9 increases the structural stability of the valve cover 5. The fixing ring 9 is firmly connected to the valve cover 5 by the tightening of the second bolt 10, which helps to ensure that the valve cover 5 will not loosen or deform during operation. The valve cover 5 can be easily separated from the valve stem 8 and the valve cover 5 by the second bolt 10, which provides convenience when the valve cover 5, the spring 13 or the valve stem 8 need to be maintained, replaced or repaired.

[0035] A circular groove 12 is formed at the upper end of the valve cover 5, and a spring 13 is disposed in the circular groove 12. The spring 13 moves in a telescopic manner in the circular groove 12, and the spring 13 is sleeved on the outer side of the valve stem 8. The spring 13 can make the valve more flexible, improve the rapid response capability of the valve to the change of fluid flow, and the spring 13 can provide a certain stability, reducing the vibration or instability of the valve during operation.

[0036] Six groups of internal through grooves 16 are evenly distributed in the valve core 15, and two external through grooves 17 are formed in a group between the six groups of internal through grooves 16 and the outer surface of the valve core 15, and the two external through grooves 17 are symmetrically distributed above and below the internal through grooves 16. The even distribution of the six groups of internal through grooves 16 helps to evenly distribute the fluid, so that the fluid can obtain a more even flow when passing through the valve core 15, and the through grooves can help reduce the resistance of the fluid when passing through the valve core 15, thereby improving the fluid transmission efficiency of the entire valve, and the internal through grooves 16 and the external through grooves 17 help to reduce the vibration and noise that may be caused when the fluid passes through the valve.

[0037] The valve body 1 is provided with a guide groove 20 and an inner cavity 21. The guide groove 20 is slidably connected to the valve core 15. A valve cage 18 is provided between the inner cavity 21 and the valve core 15. The valve cage 18 is provided with six groups of throttle holes 19 evenly distributed. Two throttle holes 19 form a group and are symmetrically distributed above and below the valve cage 18. The guide groove 20 helps to guide the movement of the valve core 15 and ensure that it slides correctly inside. By adjusting the flow rate of the fluid by telescopically adjusting the valve core 15, it helps to achieve accurate flow adjustment of the valve and meet the system's requirements for different flow rates.

[0038] When in use, the external pipeline is connected through the flange hole 4 on the inlet and outlet 2 and the water outlet 3, the valve stem 8 is connected to the external telescopic power device, and the water flows through the inner groove 16 and the outer groove 17 in the valve core 15 and cooperates with the throttle hole 19 to connect the water flow to the water outlet 3. The valve stem 8 is moved up and down to drive the valve core 15 to adjust the water flow pressure, and the valve core 15 can be moved to the top to reach the maximum open state.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cage-type single-seat regulating valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a water inlet (2) and a water outlet (3) on both sides, the valve body (1) is provided with a valve cover (5) at the upper end, a valve stem (8) is provided inside the valve cover (5) and is slidably connected inside the valve cover (5), and a valve core (15) is fixedly connected to the bottom of the valve stem (8); Six groups of internal through grooves (16) are evenly distributed in the valve core (15), and two external through grooves (17) are provided between the six groups of internal through grooves (16) and the outer surface of the valve core (15). The two external through grooves (17) are symmetrically distributed above and below the internal through grooves (16).

2. A cage-type single-seat regulating valve according to claim 1, characterized in that: An array of flange holes (4) is provided at the connection between the water inlet (2) and the water outlet (3) and the outside.

3. The cage-type single-seat regulating valve according to claim 1, characterized in that: The valve body (1) and the valve cover (5) are connected via six groups of first bolts (7), a first pressing ring (701) is crimped onto the bottom of the first bolts (7), and a sealing gasket (6) and a stepped sealing gasket (14) are provided between the valve body (1) and the valve cover (5).

4. The cage-type single-seat regulating valve according to claim 1, characterized in that: A fixing ring (9) is provided on the top of the valve cover (5), the fixing ring (9) and the valve cover (5) are connected via a second bolt (10), a second pressing ring (1001) is crimped on the bottom of the second bolt (10), and a sealing rubber ring (11) is provided between the fixing ring (9) and the valve stem (8).

5. The cage-type single-seat regulating valve according to claim 1, characterized in that: A circular groove (12) is formed at the upper end of the valve cover (5), a spring (13) is arranged in the circular groove (12), the spring (13) is capable of telescopic movement in the circular groove (12), and the spring (13) is sleeved on the outer side of the valve stem (8).

6. The cage-type single-seat regulating valve according to claim 1, characterized in that: The valve body (1) is provided with a guide groove (20) and an inner cavity (21), the guide groove (20) is slidably connected to the valve core (15), a valve cage (18) is provided between the inner cavity (21) and the valve core (15), the valve cage (18) is provided with six groups of throttle holes (19) which are evenly distributed, and the throttle holes (19) are symmetrically distributed above and below the valve cage (18) in groups of two.

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