Pressure self-sealing angle stop valve

Abstract

The utility model relates to the technical field of stop valve devices, in particular to a pressure self-sealing angle type stop valve which comprises a valve body. A valve rod is arranged in the valve body, a bottom table is arranged at the bottom end of the valve rod, a valve cover is arranged at the top end of the valve body, a floating cover is arranged on the inner side of the valve cover, padding is arranged on the inner side of the floating cover, one side of the valve cover is fixedly connected with an external structure through a locking bolt and a pin shaft, and a valve clack assembly is arranged at the bottom end of the bottom table. The valve clack assembly comprises a valve clack body and a rotary table arranged at the bottom end of the valve clack body, a top groove is downwards formed in the top end of the valve clack body, an inner groove is formed in the middle of the valve clack body, the top groove and the inner groove are communicated, and when a valve rod at the top end is driven, the valve clack assembly is erected and fixed to the valve plate assembly and can be clamped through the inner groove in the middle. The valve clack assembly is clamped through the bottom end of the top groove, the fixing function is achieved, the valve clack assembly is not separated from the bottom table due to the limitation of the inner space of the valve body, and the valve clack assembly can block a medium through the section of the valve clack assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valve devices, in particular to a pressure self-sealing angle stop valve. Background Art

[0002] The stop valve, also called the cut-off valve, is one of the most widely used valves. It is popular because of the small friction between the sealing surfaces during opening and closing, the durability, the small opening height, the easy manufacturing and maintenance, and it is suitable not only for medium and low pressure, but also for high pressure. The closing principle of the stop valve is to rely on the valve stem pressure to make the valve disc sealing surface and the valve seat sealing surface fit closely to prevent the flow of the medium. The right-angle stop valve is one of the stop valves.

[0003] At present, right-angle stop valves are installed on refrigeration devices. However, the existing right-angle stop valves are not convenient to install and disassemble with the pipelines of the refrigeration devices, and the firmness and sealing performance are not good enough. Utility Model Content

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a pressure self-sealing angle stop valve, which can effectively solve the problems that the right-angle stop valve in the prior art is inconvenient to install and disassemble with the pipeline of the refrigeration device, and its firmness and sealing are not good enough.

[0006] Technical Solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The utility model provides a pressure self-sealing angle stop valve, comprising a valve body; a valve stem is arranged inside the valve body, a bottom platform is arranged at the bottom end of the valve stem, a valve cover is arranged at the top end of the valve body, a floating cover is arranged on the inner side of the valve cover, a packing is arranged on the inner side of the floating cover, one side of the valve cover is fixedly connected to an external structure by a locking bolt and a pin shaft, a valve flap assembly is arranged at the bottom end of the bottom platform, the valve flap assembly comprises a valve flap body and a turntable arranged at the bottom end of the valve flap body, a top groove is opened downwardly at the top end of the valve flap body, an inner groove is opened in the middle part of the valve flap body, and the top groove and the inner groove are kept in communication.

[0009] Furthermore, the bottom end of the base is sleeved in the valve flap assembly.

[0010] Furthermore, a sealing ring is sleeved between the outer side of the floating cover and the valve cover.

[0011] Furthermore, the inner tank is provided with a tank body outwardly and communicated with the external environment.

[0012] Furthermore, the turntable is in the shape of a truncated cone that is larger at the top and smaller at the bottom, and the outer diameter of the top end of the turntable is smaller than the outer diameter of the bottom end of the valve flap assembly.

[0013] Furthermore, the filler is made of graphite.

[0014] Beneficial Effects

[0015] Compared with the known public technology, the technical solution provided by the utility model has the following beneficial effects:

[0016] The utility model provides a valve flap assembly, which can be fixed to the valve plate assembly through the base structure at its bottom end when the valve stem at the top end is driven. It can be clamped through the inner groove in the middle and through the bottom end of the top groove to achieve a fixing effect. Due to the internal space of the valve body, the valve flap assembly will not be separated from the base, and the valve flap assembly can seal the medium through its cross section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural cross-sectional view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the valve disc assembly in the utility model;

[0021] Figure 4 It is a structural cross-sectional view of the valve flap assembly in the utility model.

[0022] The numbers in the figure represent: 1. valve body; 2. base; 3. valve stem; 4. floating cover; 5. sealing ring; 6. valve cover; 7. packing; 8. locking bolt; 9. valve disc assembly; 91. valve disc body; 92. top groove; 93. inner groove; 94. turntable. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0024] The utility model is further described below in conjunction with embodiments.

[0025] Example: Pressure self-sealing angle stop valve, refer to the attached Figure 1 -Attached Figure 4 , a pressure self-sealing angle stop valve, comprising a valve body 1; a valve stem 3 is arranged inside the valve body 1, a bottom platform 2 is arranged at the bottom end of the valve stem 3, a valve cover 6 is arranged at the top end of the valve body 1, a floating cover 4 is arranged on the inner side of the valve cover 6, a packing 7 is arranged on the inner side of the floating cover 4, one side of the valve cover 6 is fixedly connected to the external structure through a locking bolt 8 and a pin shaft, a valve flap assembly 9 is arranged at the bottom end of the bottom platform 2, the valve flap assembly 9 comprises a valve flap body 91 and a turntable 94 arranged at the bottom end of the valve flap body 91, a top groove 92 is opened downwardly at the top end of the valve flap body 91, an inner groove 93 is opened in the middle of the valve flap body 91, and the top groove 92 and the inner groove 93 are kept in communication;

[0026] The bottom end of the base 2 is sleeved in the valve flap assembly 9; a sealing ring 5 is sleeved between the outer side of the floating cover 4 and the valve cover 6; the inner groove 93 opens a groove body outward and is connected to the external environment; the turntable 94 is a truncated cone with a larger top and a smaller bottom, and the top outer diameter of the turntable 94 is smaller than the bottom outer diameter of the valve flap assembly 9; the filler 7 is made of graphite; through the set valve flap assembly 9, when the valve stem 3 at the top is driven, it can be fixed to the valve flap body 91 through the base 2 structure at its bottom end, and can be clamped through the inner groove 93 in the middle and through the bottom end of the top groove 91 to achieve a fixing effect, and limited by the internal space of the valve body 1, the valve flap assembly 9 will not be separated from the base 2, and the valve flap assembly 9 can block the medium through its cross section.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. Pressure self-sealing angle stop valve, characterized in that: The invention comprises a valve body (1); a valve stem (3) is arranged inside the valve body (1); a bottom platform (2) is arranged at the bottom end of the valve stem (3); a valve cover (6) is arranged at the top end of the valve body (1); a floating cover (4) is arranged on the inner side of the valve cover (6); a packing (7) is arranged on the inner side of the floating cover (4); one side of the valve cover (6) is fixedly connected to an external structure by a locking bolt (8) and a pin shaft; a valve flap assembly (9) is arranged at the bottom end of the bottom platform (2); the valve flap assembly (9) comprises a valve flap body (91) and a turntable (94) arranged at the bottom end of the valve flap body (91); a top groove (92) is opened downward at the top end of the valve flap body (91); an inner groove (93) is opened in the middle of the valve flap body (91); the top groove (92) and the inner groove (93) are kept in communication.

2. The pressure self-sealing angle stop valve according to claim 1, characterized in that: The bottom end of the base platform (2) is sleeved in the valve flap assembly (9).

3. The pressure self-sealing angle stop valve according to claim 1, characterized in that: A sealing ring (5) is sleeved between the outer side of the floating cover (4) and the valve cover (6).

4. The pressure self-sealing angle stop valve according to claim 1, characterized in that: The inner groove (93) is provided with a groove body outwardly and is communicated with the external environment.

5. The pressure self-sealing angle stop valve according to claim 4, characterized in that: The turntable (94) is in the shape of a truncated cone that is larger at the top and smaller at the bottom, and the outer diameter of the top end of the turntable (94) is smaller than the outer diameter of the bottom end of the valve flap assembly (9).

6. The pressure self-sealing angle stop valve according to claim 1, characterized in that: The filler (7) is made of graphite.

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