CN217977430U - Sealing pair of stop valve - Google Patents
Sealing pair of stop valve Download PDFInfo
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- CN217977430U CN217977430U CN202221938700.1U CN202221938700U CN217977430U CN 217977430 U CN217977430 U CN 217977430U CN 202221938700 U CN202221938700 U CN 202221938700U CN 217977430 U CN217977430 U CN 217977430U
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Abstract
The utility model discloses a sealing pair of stop valves, relating to the technical field of valves; the upper sealing element is connected with the valve rod through the valve identification cover, under the fixed supporting action of the valve rod and the valve cover, the upper sealing element is formed to move up and down by rotating a hand wheel or being forcefully moved by electricity or pneumatics, and the upper sealing element and the lower sealing element form a sealing pair to realize sealing; an annular sealing groove is formed in the lower side of the upper sealing element, a positioning blind hole is formed in the side wall of the annular sealing groove, and a conical elastic sealing surface with a downward small head is extruded and sintered on the annular sealing groove; the upper side of the conical elastic sealing surface with the downward small end of the upper sealing element is provided with a connected plane elastic sealing surface; an inner conical sealing surface matched with the conical surface elastic sealing surface above and below the small end of the upper sealing element is arranged on the lower sealing element; the utility model discloses a sealed vice seal up, no leakage, safe and reliable, long service life.
Description
Technical Field
The utility model belongs to the technical field of the valve, concretely relates to sealing pair of stop valve class.
Background
The existing stop valves, such as the stop valve for chlorine, the corrugated pipe stop valve, the regulating valve (stop valve), the corrugated pipe regulating valve (stop valve) and the like, are poor in sealing performance, need to be stopped and replaced, waste time, increase cost and the like, and leakage often occurs when the stop valves are used.
Disclosure of Invention
The problems that the existing stop valves are often leaked in use, poor in sealing performance, required to be stopped and replaced, time is wasted, cost is increased and the like are solved; an object of the utility model is to provide a sealing pair of stop valve class.
The utility model relates to a sealing pair of stop valves, which comprises a valve body, a valve cover, a valve clack cover, a valve rod, an upper sealing element and a lower sealing element; the upper sealing element is connected with the valve rod through the valve identification cover, the upper sealing element is formed to move up and down by rotating a hand wheel or being forcefully moved by electricity or pneumatics under the fixed supporting action of the valve rod and the valve cover, and the upper sealing element and the lower sealing element form a sealing pair to realize sealing.
Preferably, the lower side of the upper sealing element is provided with an annular sealing groove, the side wall of the annular sealing groove is provided with a positioning blind hole, and the annular sealing groove is provided with a conical surface elastic sealing surface with a downward small end through extrusion sintering.
Preferably, the upper side of the conical elastic sealing surface with the downward small end of the upper sealing element is provided with a connected plane elastic sealing surface.
Preferably, the lower sealing element is provided with an inner cone sealing surface matched with the conical elastic sealing surface above and below the small end of the upper sealing element; the lower sealing element is made of an alloy material capable of meeting the corrosion-resistant requirement or a corrosion-resistant alloy layer is adopted on the sealing surface.
Preferably, the upper side of the lower sealing element is provided with a plane sealing surface which is matched with the plane elastic sealing surface connected with the upper side of the conical elastic sealing surface with the downward small end of the upper sealing element.
Compared with the prior art, the beneficial effects of the utility model are that:
the novel sealing pair is adopted for sealing, and has the advantages of no leakage, safety, reliability and long service life.
Drawings
For ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is another schematic structural diagram of the present invention.
In the figure: 1-a valve stem; 2-a flap cover; 3-an upper seal; 4-a lower seal; 5-positioning the blind hole; 31-a planar resilient sealing surface; 32-conical elastic sealing surface; 41-inner cone sealing surface; 42-plane sealing surface.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present invention. The structure, proportion, size and so on shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions of the present invention, so that the present invention does not have the essential significance in the technology, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function and the achievable purpose of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.
As shown in fig. 1 and 2, the following technical solutions are adopted in the present embodiment: comprises a valve body, a valve cover, a valve clack cover 2, a valve rod 1, an upper sealing element 3 and a lower sealing element 4; the upper sealing element 3 is connected with the valve rod 1 through the valve distinguishing cover 2, under the fixed supporting action of the valve rod and the valve cover, the hand wheel is rotated or the electric or pneumatic driving is carried out to form the up-down movement of the upper sealing element 3, and the upper sealing element 3 and the lower sealing element 4 form a sealing pair to realize the sealing.
As shown in fig. 1, further, in the present embodiment, an annular sealing groove is formed in a lower side of the upper sealing element 3, a blind positioning hole 5 is formed in a sidewall of the annular sealing groove, and a conical elastic sealing surface 32 with a downward small end is extruded and sintered on the annular sealing groove.
Furthermore, in the present embodiment, the upper side of the conical elastic sealing surface 32 facing downward from the small end of the upper sealing member 3 is provided with a connected planar elastic sealing surface 31.
Further, in the present embodiment, the lower sealing element is provided with an inner cone sealing surface 41 which is matched with the conical elastic sealing surface 32 above and below the small end of the upper sealing element, and the lower sealing element is made of an alloy material capable of meeting corrosion resistance requirements or a corrosion-resistant alloy layer is adopted as the sealing surface.
Further, in the present embodiment, a flat sealing surface 42 is provided on the upper side of the lower sealing member to be fitted with the flat elastic sealing surface 31 connected to the upper side of the tapered elastic sealing surface facing downward from the small end of the upper sealing member.
The working principle of the specific embodiment is as follows: the cut-off is realized by the sealing between the upper sealing element 3 and the lower sealing element 4, when only a conical surface is arranged, the conical elastic sealing surface 32 of the upper sealing element 3 is sealed with the inner conical sealing surface 41 of the lower sealing element 4 (valve seat), when a conical surface and a flat surface are arranged at the same time, the conical elastic sealing surface 32 of the upper sealing element 3 is sealed with the inner conical sealing surface 41 of the lower sealing element 4 (valve seat), and the flat elastic sealing surface 31 of the upper sealing element 3 is sealed with the flat sealing surface 42 of the lower sealing element 4.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A kind of sealing pair of the stop valve, characterized by that: comprises a valve body, a valve cover, a valve clack cover, a valve rod, an upper sealing element and a lower sealing element; the upper sealing element is connected with the valve rod through the valve identification cover, the upper sealing element is formed to move up and down by rotating a hand wheel or being forcefully moved by electricity or pneumatics under the fixed supporting action of the valve rod and the valve cover, and the upper sealing element and the lower sealing element form a sealing pair to realize sealing.
2. A sealing pair of the type as defined in claim 1, wherein: an annular sealing groove is formed in the lower side of the upper sealing element, a positioning blind hole is formed in the side wall of the annular sealing groove, and a conical surface elastic sealing surface with a downward small end is formed in the annular sealing groove in an extrusion sintering mode.
3. A sealing pair of a stop valve type according to claim 2, characterized in that: and a connected plane elastic sealing surface is arranged on the upper side of the conical elastic sealing surface with the small end of the upper sealing element facing downwards.
4. A sealing pair of the type as defined in claim 1, wherein: and an inner conical sealing surface matched with the conical surface elastic sealing surfaces above and below the small end of the upper sealing member is arranged on the lower sealing member.
5. A sealing pair of a stop valve type according to claim 4, wherein: and the upper side of the lower sealing element is provided with a plane sealing surface matched with a plane elastic sealing surface connected with the upper side of a conical surface elastic sealing surface with a downward small end of the upper sealing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221938700.1U CN217977430U (en) | 2022-07-26 | 2022-07-26 | Sealing pair of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221938700.1U CN217977430U (en) | 2022-07-26 | 2022-07-26 | Sealing pair of stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217977430U true CN217977430U (en) | 2022-12-06 |
Family
ID=84282822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221938700.1U Active CN217977430U (en) | 2022-07-26 | 2022-07-26 | Sealing pair of stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217977430U (en) |
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2022
- 2022-07-26 CN CN202221938700.1U patent/CN217977430U/en active Active
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