Angle seat valve connecting structure

Abstract

The utility model discloses an angle seat valve connecting structure which comprises a pneumatic control head, a connecting pipe and a valve body, the connecting pipe is installed on the valve body, the upper end of the connecting pipe is fixedly connected with the lower end of the pneumatic control head, flanges are installed at the two ends of the valve body respectively, and two pilot ports are installed on the side wall of the pneumatic control head. The adjusting mechanism is arranged at the top of the pneumatic control head and can adjust the position of the adjusting plate in the pneumatic control head, the positions of the plate and the spring can be adjusted after the position of the adjusting plate is adjusted, the elastic acting force of the spring is changed, the elastic acting force can be increased, and the sealing performance of the angle seat valve can be improved; the elastic acting force provided by the spring can be maintained through adjustment when the spring is in elastic fatigue, the sealing performance of the angle seat valve is guaranteed, a sealing air bag is arranged outside the sealing head, after air is inflated into the air control head, part of air enters an inflation hole, the sealing air bag expands after continuous pressure increasing, and the sealing performance of the sealing head in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of angle seat valves, in particular to an angle seat valve connection structure. Background Art

[0002] Angle seat valve is a guide angle seat valve operated by a single-acting pneumatic actuator with spring safety protection. When used, it should be normally open or normally closed. Angle seat valves are widely used for short-term frequent start-ups. Maintaining the flow rate can save space. It has the characteristics of sensitive response and accurate action. When used with solenoid valves, pneumatic control can accurately control the flow of gas and liquid. It can achieve accurate temperature control, dripping liquid and other requirements.

[0003] After long-term use, the performance of the spring and the sealing head of the existing angle seat valve deteriorates. When closing, there will be a certain gap between the sealing head and the inside of the valve body, resulting in reduced sealing performance and safety performance. Therefore, an angle seat valve connection structure is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an angle seat valve connection structure, which solves the problem that after long-term use, the performance of the spring and the sealing head of the existing angle seat valve deteriorates, and when closing, there will be a certain gap between the sealing head and the inside of the valve body, resulting in reduced sealing performance and safety performance.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an angle seat valve connection structure, including an air control head, a connecting pipe and a valve body, the connecting pipe is installed on the valve body and the upper end of the connecting pipe is fixedly connected to the lower end of the air control head, flanges are respectively installed at both ends of the valve body, two pilot ports are installed on the side wall of the air control head, an adjusting plate and a piston are arranged inside the air control head, the adjusting plate is arranged above the piston and a spring is installed between the adjusting plate and the piston, an adjusting mechanism connected to the adjusting plate is installed on the top of the air control head, a valve stem is installed on the piston, and the end of the valve stem extends to the inside of the connecting pipe and is connected to a sealing head.

[0008] As a further preferred embodiment of the utility model, the adjustment mechanism includes an adjusting column, a sleeve and an adjusting disk. The adjusting column is vertically installed in the middle of the top surface of the adjusting plate and a threaded structure is provided on the surface of the adjusting column. The sleeve is rotatably connected to the top of the air control head and the end of the sleeve extends into the air control head and is threadedly connected to the outside of the adjusting column. The upper end of the sleeve extends outside the air control head and is connected to the adjusting disk.

[0009] As a further preferred embodiment of the present invention, a sealing plate is installed on the outer wall of the sleeve, and a sealing groove used in conjunction with the sealing plate is provided at the upper end of the inner wall of the air control head.

[0010] As a further preferred embodiment of the present invention, a positioning strip is installed on the upper end of the inner wall of the air control head, and a positioning groove used in conjunction with the positioning strip is provided on the outer wall of the adjustment plate.

[0011] As a further preferred embodiment of the utility model, the surface of the sealing head is provided with two annular sealing grooves 2, a sealing airbag is embedded in the interior of the sealing groove 2, and an inflation hole is provided in the valve stem and the sealing head, and the inflation hole is connected to the sealing airbag.

[0012] (III) Beneficial effects

[0013] The utility model provides an angle seat valve connection structure, which has the following beneficial effects:

[0014] The utility model provides an adjusting mechanism on the top of the air control head, which can adjust the position of an adjusting plate inside the air control head. After the position of the adjusting plate is adjusted, the position of the plate and the spring can be adjusted to realize the change of the elastic force of the spring, which can not only increase the size of the elastic force to increase the sealing performance of the angle seat valve, but also maintain the size of the elastic force provided by the spring through adjustment when elastic fatigue occurs in the spring, thereby ensuring the sealing performance of the angle seat valve. A sealing airbag is provided outside the sealing head. After the air control head is filled with air, part of the air enters the inflation hole. After the pressure is continuously increased, the sealing airbag expands, thereby improving the sealing performance of the sealing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an external structural diagram of the angle seat valve connection structure of the utility model;

[0016] Figure 2 This is an internal structural diagram of the angle seat valve connection structure of the utility model;

[0017] Figure 3 for Figure 2 The structural diagram of A in the middle;

[0018] Figure 4 This is a structural diagram of the sealing head of the utility model.

[0019] In the figure: 1. air control head; 2. adjusting disk; 3. pilot port; 4. connecting pipe; 5. valve body; 6. flange; 7. positioning strip; 8. adjusting column; 9. adjusting plate; 10. sealing head; 11. valve stem; 12. piston; 13. spring; 14. sealing groove 1; 15. sleeve; 16. sealing plate; 17. threaded structure; 18. sealing airbag; 19. inflation hole; 20. sealing groove 2. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4 The embodiment of the utility model provides a technical solution: an angle seat valve connection structure, including an air control head 1, a connecting pipe 4 and a valve body 5, the connecting pipe 4 is installed on the valve body 5 and the upper end of the connecting pipe 4 is fixedly connected to the lower end of the air control head 1, flanges 6 are installed at both ends of the valve body 5, two pilot ports 3 are installed on the side wall of the air control head 1, the pilot ports 3 supply air, an adjusting plate 9 and a piston 12 are arranged inside the air control head 1, the adjusting plate 9 is arranged above the piston 12 and a spring 13 is installed between the adjusting plate 9 and the piston 12, an adjusting mechanism connected to the adjusting plate 9 is installed on the top of the air control head 1, a valve stem 11 is installed on the piston 12, the end of the valve stem 11 extends to the inside of the connecting pipe 4 and is connected to a sealing head 10, and the sealing head 10 extends into the valve body 5 to open and close the valve body 5.

[0022] Further improved, the adjustment mechanism includes an adjustment column 8, a sleeve 15 and an adjustment disk 2, the adjustment column 8 is vertically installed in the middle of the top surface of the adjustment plate 9 and the surface of the adjustment column 8 is provided with a threaded structure 17, the sleeve 15 is rotatably connected to the top of the air control head 1 and the end of the sleeve 15 extends into the air control head 1 and is threadedly connected to the outside of the adjustment column 8, the upper end of the sleeve 15 extends to the outside of the air control head 1 and is connected to the adjustment disk 2, the adjustment mechanism can adjust the position of the adjustment plate 9, after the position of the adjustment plate 9 is adjusted, the position of the plate and the spring 13 can be adjusted to achieve the change of the elastic force of the spring 13, which can not only increase the size of the elastic force but also increase the sealing of the angle seat valve. A sealing plate 16 is installed on the outer wall of the sleeve 15, and a sealing groove 14 used in conjunction with the sealing plate 16 is provided at the upper end of the inner wall of the air control head 1, so as to improve the sealing between the sleeve 15 and the air control head 1, and at the same time, it can also prevent the sleeve 15 from rotating erroneously to a certain extent.

[0023] As a further improvement, a positioning strip 7 is installed on the upper end of the inner wall of the air control head 1, and a positioning groove for use with the positioning strip 7 is opened on the outer wall of the adjustment plate 9. The positioning strip 7 positions the adjustment plate 9 so that it cannot rotate.

[0024] As a further improvement, two annular sealing grooves 20 are provided on the surface of the sealing head 10, and a sealing airbag 18 is embedded in the sealing groove 20. An inflation hole 19 is provided in the valve stem 11 and the sealing head 10, and the inflation hole 19 is connected to the sealing airbag 18. The upper end of the inflation hole 19 extends to the top of the valve stem 11. When air is supplied to the air control head 1, part of the gas enters the valve stem 11 through the inflation hole 19.

[0025] Working principle: Close the valve body 5: Pressurized air enters the air control head 1 through the upper pilot port 3, pushing the piston 12 downward, and the piston 12 continues to move downward to seal the valve body 5 and continuously pressurize. Part of the air enters the sealing airbag 18 through the inflation hole 19. After the sealing airbag 18 expands, it fits the inside of the valve body 5 to improve the sealing performance. When the position of the adjusting plate 9 needs to be adjusted, the adjusting disk 2 is rotated to drive the sleeve 15 to rotate, and the adjusting column 8 is driven to move. After the position of the adjusting plate 9 is adjusted, the position of the plate and the spring 13 can be adjusted to achieve a change in the elastic force of the spring 13, which can not only increase the size of the elastic force but also increase the sealing performance of the angle seat valve.

[0026] The utility model includes 1, air control head; 2, adjusting disk; 3, pilot port; 4, connecting pipe; 5, valve body; 6, flange; 7, positioning strip; 8, adjusting column; 9, adjusting plate; 10, sealing head; 11, valve stem; 12, piston; 13, spring; 14, sealing groove one; 15, sleeve; 16, sealing plate; 17, threaded structure; 18, sealing airbag; 19, inflation hole; 20, sealing groove two. All the components are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. The utility model solves the problem that after the existing angle seat valve is used for a long time, the performance of the spring 13 and the sealing head 10 is reduced, and when closing, there will be a certain gap between the sealing head 10 and the inside of the valve body 5. The gap between the air control head 1 and the spring 13 leads to the problem of reduced sealing performance and safety performance. The utility model combines the above-mentioned components with each other. The utility model arranges an adjustment mechanism on the top of the air control head 1. The adjustment mechanism can adjust the position of the adjustment plate 9 inside the air control head 1. After the position of the adjustment plate 9 is adjusted, the position of the plate and the spring 13 can be adjusted to achieve a change in the elastic force of the spring 13, which can not only increase the size of the elastic force to increase the sealing performance of the angle seat valve, but also maintain the size of the elastic force provided by the spring 13 by adjustment when elastic fatigue occurs in the spring 13, thereby ensuring the sealing performance of the angle seat valve. A sealing airbag 18 is arranged outside the sealing head 10. After the air control head 1 is filled with air, part of the air enters the inflation hole 19. After the pressure is continuously increased, the sealing airbag 18 expands, thereby improving the sealing performance of the sealing head 10.

[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An angle seat valve connection structure, comprising an air control head (1), a connecting pipe (4) and a valve body (5), characterized in that: The connecting pipe (4) is mounted on the valve body (5) and the upper end of the connecting pipe (4) is fixedly connected to the lower end of the air control head (1). Flanges (6) are respectively mounted on both ends of the valve body (5). Two pilot ports (3) are mounted on the side wall of the air control head (1). An adjusting plate (9) and a piston (12) are arranged inside the air control head (1). The adjusting plate (9) is arranged above the piston (12) and a spring (13) is installed between the adjusting plate (9) and the piston (12). An adjusting mechanism connected to the adjusting plate (9) is installed on the top of the air control head (1). A valve stem (11) is mounted on the piston (12). The end of the valve stem (11) extends to the inside of the connecting pipe (4) and is connected to a sealing head (10).

2. An angle seat valve connection structure according to claim 1, characterized in that: The adjustment mechanism comprises an adjustment column (8), a sleeve (15) and an adjustment disk (2); the adjustment column (8) is vertically mounted on the middle of the top surface of the adjustment plate (9) and a threaded structure (17) is provided on the surface of the adjustment column (8); the sleeve (15) is rotatably connected to the top of the air control head (1) and the end of the sleeve (15) extends into the air control head (1) and is threadedly connected to the outside of the adjustment column (8); the upper end of the sleeve (15) extends outside the air control head (1) and is connected to the adjustment disk (2).

3. An angle seat valve connection structure according to claim 2, characterized in that: A sealing plate (16) is installed on the outer wall of the sleeve (15), and a sealing groove (14) for use with the sealing plate (16) is provided at the upper end of the inner wall of the air control head (1).

4. The angle seat valve connection structure according to claim 1, characterized in that: A positioning strip (7) is also installed on the upper end of the inner wall of the air control head (1), and a positioning groove for use with the positioning strip (7) is provided on the outer wall of the adjustment plate (9).

5. The angle seat valve connection structure according to claim 1, characterized in that: The surface of the sealing head (10) is provided with two annular sealing grooves (20), the interior of the sealing grooves (20) is inlaid with a sealing airbag (18), and the valve stem (11) and the sealing head (10) are provided with an inflation hole (19), and the inflation hole (19) is connected to the sealing airbag (18).

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