Sealing insulation valve

Abstract

The utility model relates to a sealing insulation valve, including valve body, bonnet, valve clack, valve rod and sealing plug, bonnet is installed above the valve body, the valve clack is located in the valve body, the sealing plug is sleeved on the valve rod and clings to the outer side wall of the valve rod, the valve clack is located in the valve body, and the sealing plug is located in the valve body and clings to the outer side wall of the valve rod. The valve rod penetrates through the valve body and extends into the valve clack, a valve clack sealing face matched with the valve seat is arranged at the bottom of the valve clack, a silica gel soft connector is fixedly arranged on the valve clack sealing face, and the valve clack and the valve seat are connected and fixed through the silica gel soft connector. The valve is simple in structure and convenient to assemble, through reasonable arrangement, the friction force between the valve clack sealing face and the valve seat sealing face can be effectively reduced in the opening and closing process of the valve, unnecessary abrasion is avoided, the service life is prolonged, practicability is high, and the requirements of customers can be met easily.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a sealed insulating valve. Background Art

[0002] A valve is a pipeline accessory used to open and close pipelines, control the flow direction, and adjust and control the parameters (temperature, pressure, and flow rate) of the conveyed medium. According to its functions, it can be divided into shut-off valves, check valves, regulating valves, etc. A valve is a control component in a fluid transportation system, with functions such as cut-off, regulation, diversion, prevention of reverse flow, pressure stabilization, flow splitting, or overflow pressure relief. Valves used in fluid control systems range from the simplest stop valves to various valves used in extremely complex automatic control systems, and their varieties and specifications are quite numerous.

[0003] After a general valve works, when it needs to be closed, pressure must be applied to the valve flap to force the sealing surface not to leak. When the medium enters the valve from below the valve flap, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so it is easy to cause wear to the valve stem. After long-term operation, the sealing performance is difficult to guarantee, which will affect the service life and cannot meet the needs of customers. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a sealed insulating valve in view of the problems existing in the prior art.

[0005] A sealed insulating valve includes a valve body, a valve cover, a valve flap, a valve stem, and a sealing plug. The valve cover is installed above the valve body. The valve flap is located inside the valve body. The sealing plug is sleeved on the valve stem and fits with the outer side wall of the valve stem. The valve stem penetrates through the valve body and extends into the interior of the valve flap. A valve flap sealing surface matching the valve seat is provided at the bottom of the valve flap. A silica gel soft joint is fixedly arranged on the valve flap sealing surface. The valve flap and the valve seat are connected and fixed through the silica gel soft joint.

[0006] In one embodiment, the valve flap sealing surface is a conical surface.

[0007] In one embodiment, the valve flap is provided with a first through hole, a second through hole, and a third through hole. The first through hole and the second through hole are communicated. The third through hole is communicated with the valve flap sealing surface.

[0008] In one embodiment, the valve body is provided with a fourth through hole and a fifth through hole. The fifth through hole coincides with the third through hole.

[0009] In one embodiment, a threaded hole is provided at the upper end of the valve stem.

[0010] In one embodiment, the valve stem and the valve flap are made of stainless steel, and the valve stem, the valve flap and the silicone soft joint are integrally formed.

[0011] In one embodiment, the valve body, the valve cover and the sealing plug are all made of plastic, and the valve cover, the sealing plug and the valve body are formed secondarily.

[0012] In one embodiment, a sealing ring is further sleeved on the valve stem, and the sealing ring is located between the valve stem and the sealing plug.

[0013] The above-mentioned sealing and insulating valve has a simple structure and is easy to assemble. Through reasonable settings, the friction between the sealing surface of the valve flap and the sealing surface of the valve seat can be effectively reduced during the opening and closing process of the valve, avoiding unnecessary wear, extending the service life, and having strong practicability, which is beneficial to meeting the needs of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a sealing and insulating valve of the present invention;

[0015] Figure 2 It is a schematic cross-sectional structure diagram of a sealing and insulating valve of the present invention;

[0016] Figure 3 It is a schematic diagram of a partial structure of a sealing and insulating valve of the present invention;

[0017] Figure 4 It is a schematic diagram of a partial structure of a sealing and insulating valve of the present invention.

[0018] Among them, 10, valve body; 110, fourth through hole; 120, fifth through hole; 20, valve cover; 30, valve flap; 310, sealing surface of the valve flap; 320, first through hole; 330, second through hole; 340, third through hole; 40, valve stem; 410, screw hole; 50, sealing plug; 60, silicone soft joint; 70, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] As Figures 1 to 4 shown, a sealed insulation valve includes a valve body 10, a valve cover 20, a valve flap 30, a valve stem 40 and a sealing plug 50. The valve cover 20 is installed above the valve body 10. The valve flap 30 is located inside the valve body 10. The sealing plug 50 is sleeved on the valve stem 40 and fits against the outer side wall of the valve stem 40. The valve stem 40 penetrates through the valve body 10 and extends into the interior of the valve flap 30. And a valve flap sealing surface 310 matching the valve seat is provided at the bottom of the valve flap 30. In this utility model, relying on the pressure of the valve stem 40, the valve flap sealing surface 310 is closely attached to the valve seat sealing surface to prevent the medium from flowing through. In addition, a silica gel soft joint 60 is fixedly provided on the valve flap sealing surface 310. The valve flap 30 and the valve seat are connected and fixed through the silica gel soft joint 60. Among them, the setting of the silica gel soft joint 60 enables the valve flap 30 to avoid being subjected to a large impact on its sealing surface when it is opened, the opening is relatively gentle, and it also avoids unnecessary wear on the sealing surface and prolongs the service life.

[0023] Furthermore, the valve flap sealing surface 310 is a conical surface. The setting of the conical surface can further reduce the impact force received when the valve flap 30 is opened and closed, making the valve flap 30 faster and more stable when it is closed.

[0024] Furthermore, the valve flap 30 is provided with a first through hole 320, a second through hole 330 and a third through hole 340. The first through hole 320 and the second through hole 330 are communicated with each other. The third through hole 340 is communicated with the valve flap sealing surface 310. In this utility model, the settings of the first through hole 320, the second through hole 330 and the third through hole 340 are for the purpose of medium switching during the working process.

[0025] Furthermore, a fourth through-hole 110 and a fifth through-hole 120 are provided on the valve body 10, and the fifth through-hole 120 coincides with the third through-hole 340, aiming to facilitate the circulation and exchange of the medium during the operation of the valve.

[0026] Still further, the valve body 10, the valve cover 20 and the sealing plug 50 are all made of plastic materials, and the valve cover 20, the sealing plug 50 and the valve body 10 are integrally formed. Specifically, the valve cover 20 is embedded in the valve body 10, and the sealing plug 50 is fixed at the top opening of the valve body 10.

[0027] Further, the valve stem 40 and the valve flap 30 are made of stainless steel materials, and the valve stem 40, the valve flap 30 and the silica gel soft joint 60 are integrally formed. In the present utility model, the integral formation is beneficial to improving the structural stability, enhancing the sealing effect, ensuring the product quality, and thus extending the service life of the valve.

[0028] In addition, for the convenience of installation and fixation, a screw hole 410 is further provided at the upper end of the valve stem 40; in addition, a sealing ring 70 is sleeved on the valve stem 40, and the sealing ring 70 is located between the valve stem 40 and the sealing plug 50. Among them, the setting of the sealing ring 70 is beneficial to further enhancing the sealing effect and ensuring the normal operation of the valve.

[0029] The above-mentioned sealing and insulating valve has a simple structure and is convenient for assembly. Through reasonable settings, the friction between the valve flap sealing surface 310 and the valve seat sealing surface can be effectively reduced during the opening and closing process of the valve, unnecessary wear is avoided, the service life is extended, and the practicability is strong, which is beneficial to meeting the needs of customers.

[0030] The technical features of the above-described embodiments can be arbitrarily combined. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0031] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A sealed insulating valve, comprising a valve body, a valve cover, a valve disc, a valve stem and a sealing plug, wherein the valve cover is installed above the valve body, the valve disc is located in the valve body, the sealing plug is sleeved on the valve stem and fits with the outer side wall of the valve stem, the valve stem passes through the valve body and extends to the inside of the valve disc, characterized in that: A valve flap sealing surface matching the valve seat is provided at the bottom of the valve flap, a silicone flexible joint is fixedly provided on the valve flap sealing surface, and the valve flap and the valve seat are connected and fixed via the silicone flexible joint.

2. A sealing insulating valve according to claim 1, characterized in that: The valve disc sealing surface is a conical surface.

3. A sealing insulating valve according to claim 1, characterized in that: The valve flap is provided with a first through hole, a second through hole and a third through hole, the first through hole is communicated with the second through hole, and the third through hole is communicated with the valve flap sealing surface.

4. A sealing insulating valve according to claim 3, characterized in that: The valve body is provided with a fourth through hole and a fifth through hole, and the fifth through hole overlaps with the third through hole.

5. A sealing insulating valve according to claim 1, characterized in that: The upper end of the valve stem is provided with a screw hole.

6. A sealing insulating valve according to claim 1, characterized in that: The valve stem and the valve flap are made of stainless steel, and the valve stem, the valve flap and the silicone flexible joint are integrally formed.

7. A sealing insulating valve according to claim 1, characterized in that: The valve body, the valve cover and the sealing plug are all made of plastic material, and the valve cover, the sealing plug and the valve body are secondary molded.

8. The sealing insulating valve according to claim 1, characterized in that: A sealing ring is also sleeved on the valve stem, and the sealing ring is located between the valve stem and the sealing plug.

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