A valve sealing bolt structure of a drain valve

Abstract

The utility model discloses a kind of valve sealing bolt structures of adding and discharging valve, including bolt structure main body installed in the inside of valve body, the end of the bolt structure main body close to the valve body is provided with sealing extrusion cone head, first outer thread part that bolt structure main body can be threadedly connected to the valve body is also provided, fastening nut is also threadedly connected on the first outer thread part, the inside of the bolt structure main body is provided with conveying pipeline, the end of the conveying pipeline away from the valve body is provided with connecting chamber, by adopting straight-through structure, it can be directly processed assembly on being filled system structure, substantially reduce the space requirement needed by adding and discharging device;Overall structure is simple and compact, bolt structure main body and plug can be conveniently replaced, suitable for a variety of working environments, still can be normally used under complex working conditions, operability is strong.

Description

Technical Field

[0001] This utility model relates to the field of valve sealing bolts, specifically to a valve sealing bolt structure for a drain valve. Background Technology

[0002] In existing technologies, filler / vent valves are widely used in everyday pressurization and vacuum equipment, such as refrigerant charging ports for air conditioners. In the aerospace field, filler / vent valves are mainly used for the filling and venting of propellants and pressurizing gases in rockets or satellites.

[0003] Traditional venting valves used on spacecraft employ internal helical spring preload to achieve sealing, resulting in complex shapes that are not conducive to module integration;

[0004] Accordingly, this utility model proposes a structure for adding a valve sealing bolt to a drain valve. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model provides a valve sealing bolt structure for a filling and draining valve. By adopting a straight-through structure, it can be directly processed and assembled on the structure of the filling system, which greatly reduces the space requirements of the filling and draining device. The overall structure is simple and compact, and the main body of the bolt structure and the plug can be easily replaced. It is suitable for various working environments and can still be used normally under complex working conditions, with strong operability.

[0006] Technical solution

[0007] A sealing bolt structure for a drain valve includes a bolt structure body installed inside the valve body. A sealing extrusion cone is provided at one end of the bolt structure body near the valve body. The bolt structure body also has a first external thread portion capable of being threaded onto the valve body, and a fastening nut is threaded onto the first external thread portion. A conveying pipe is provided inside the bolt structure body. A connecting chamber is provided at one end of the conveying pipe away from the valve body. Several separate branch pipes are connected in a circular array at the other end of the conveying pipe away from the connecting chamber. An outlet portion is connected to the other end of each separate branch pipe.

[0008] Furthermore, a first annular groove is provided inside the outer circular surface of the main body of the bolt structure, and a first sealing ring that mates with the inner wall of the valve body channel is provided inside the first annular groove.

[0009] Furthermore, a plug is also provided in the connecting chamber, and a second annular groove is provided in the annular outer surface of the plug, and a second sealing ring that mates with the connecting chamber is provided in the second annular groove.

[0010] Furthermore, a nut is also fitted onto the outside of the plug.

[0011] Furthermore, a second external thread portion that can be adapted to the nut is also provided on the outer surface of the bolt structure body at the end away from the valve body.

[0012] Furthermore, the plug is also provided with a compression ring, and the nut has a compression part in the middle position for pressing the compression ring to tighten the plug.

[0013] Beneficial effects

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] By adopting a straight-through structure, it can be directly processed and assembled on the structure of the filling system, which greatly reduces the space required for the filling and discharging device; the overall structure is simple and compact, and the main bolt structure and plugs can be easily replaced, making it suitable for various working environments. It can still be used normally under complex working conditions and has strong operability. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a valve sealing bolt structure for an exhaust valve according to the present invention;

[0017] Figure 2 This is a structural schematic diagram of the main bolt structure.

[0018] Figure 3 for Figure 2 The left view.

[0019] Attached icon number

[0020] Bolt structure main body 1, first ring groove 2, separation branch pipe 3, valve body 4, sealing extrusion cone 5, outlet 6, first sealing ring 7, first external thread 8, fastening nut 9, second sealing ring 10, second external thread 11, nut 12, extrusion part 13, extrusion ring 14, plug 15, second ring groove 16, connecting chamber 17, conveying pipe 18. Detailed Implementation

[0021] To better illustrate the content of this utility model, the following description is provided in conjunction with the accompanying drawings and embodiments:

[0022] have Figures 1-3As shown, this utility model discloses a valve sealing bolt structure for a valve, including a bolt structure body 1 installed inside the valve body 4. A sealing extrusion cone 5 is provided at one end of the bolt structure body 1 near the valve body 4. The bolt structure body 1 is also provided with a first external thread portion 8 that can be threaded to the valve body 4. A fastening nut 9 is also threaded to the first external thread portion 8. A conveying pipe 18 is provided inside the bolt structure body 1. A connecting chamber 17 is provided at one end of the conveying pipe 18 away from the valve body 4. A plurality of separate branch pipes 3 are connected in a ring array at one end of the conveying pipe 18 away from the connecting chamber 17. The other end of the separate branch pipes 3 is connected to an outlet portion 6.

[0023] Furthermore, a first annular groove 2 is provided inside the outer circular surface of the bolt structure body 1, and a first sealing ring 7 that cooperates with the inner wall of the valve body 4 channel is provided inside the first annular groove 2.

[0024] Furthermore, a plug 15 is also provided in the connecting chamber 17, and a second annular groove 16 is provided in the annular outer surface of the plug 15, and a second sealing ring 10 that cooperates with the connecting chamber 17 is provided in the second annular groove 16.

[0025] Furthermore, a nut 12 is also fitted onto the outside of the plug 15.

[0026] Furthermore, a second external thread 11 that can be adapted to the nut 12 is also provided on the outer surface of the bolt structure body 1 at the end away from the valve body 4.

[0027] Furthermore, the plug 15 is also provided with a compression ring 14, and the nut 12 is provided with a compression part 13 for pressing the compression ring 14 to secure the plug 15 at the middle position.

[0028] Specifically, when sealing is required, the bolt structure body 1 is screwed into the valve body 4 through the first external thread 8, so that the sealing extrusion cone 5 presses against the inlet of the internal channel of the valve body 4 to achieve sealing of the valve body 4. At the same time, the first sealing ring 7 seals the valve body 4 and the bolt structure body 1.

[0029] Then, the bolt structure body 1 is tightened by tightening nut 9;

[0030] At the same time, the plug 15 is inserted into the connecting chamber 17, and the tail of the bolt structure body 1 is sealed by the cooperation of the second sealing ring 10 with the inner wall of the connecting chamber 17. Then, the nut 12 is used to tighten the plug 15 by the extrusion part 13 and the extrusion ring 14.

[0031] When it is necessary to add or drain, first unscrew the nut 12, remove the plug 15, then install the adapter, and then fix the adapter with the nut 12.

[0032] Then loosen the fastening nut 9, unscrew the main body 1 of the bolt structure outward, and turn the thread outward by no more than one turn. Then tighten the fastening nut 9 again. At this time, the valve body 4 can be unsealed and can be filled or drained through the adapter.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the technical solutions of this utility model have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A valve sealing bolt structure for an added drain valve, characterized in that: The system includes a bolt structure body (1) installed inside the valve body (4). A sealing extrusion cone (5) is provided at one end of the bolt structure body (1) near the valve body (4). The bolt structure body (1) is also provided with a first external thread (8) that can be threaded to the valve body (4). A fastening nut (9) is also threaded to the first external thread (8). A conveying pipe (18) is provided inside the bolt structure body (1). A connecting chamber (17) is provided at one end of the conveying pipe (18) away from the valve body (4). A number of separate branch pipes (3) are connected in a ring array at one end of the conveying pipe (18) away from the connecting chamber (17). An outlet (6) is connected at the other end of the separate branch pipe (3).

2. The valve sealing bolt structure for a discharge valve according to claim 1, characterized in that: The outer circular surface of the bolt structure body (1) is also provided with a first annular groove (2), and a first sealing ring (7) that cooperates with the inner wall of the valve body (4) channel is provided in the first annular groove (2).

3. The valve sealing bolt structure for a discharge valve according to claim 2, characterized in that: The connecting chamber (17) is also provided with a plug (15), and a second annular groove (16) is provided in the annular outer surface of the plug (15), and a second sealing ring (10) that cooperates with the connecting chamber (17) is provided in the second annular groove (16).

4. The valve sealing bolt structure for a drain valve according to claim 3, characterized in that: The plug (15) is also fitted with a nut (12).

5. The valve sealing bolt structure for a discharge valve according to claim 4, characterized in that: The outer surface of the bolt structure body (1) away from the valve body (4) is also provided with a second external thread (11) that can be adapted to the nut (12).

6. The valve sealing bolt structure for a discharge valve according to claim 5, characterized in that: The plug (15) is also provided with a compression ring (14), and the nut (12) is provided with a compression part (13) for pressing the compression ring (14) to tighten the plug (15).

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