CN211501698U - High sealing performance gate valve - Google Patents
High sealing performance gate valve Download PDFInfo
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- CN211501698U CN211501698U CN201922136716.5U CN201922136716U CN211501698U CN 211501698 U CN211501698 U CN 211501698U CN 201922136716 U CN201922136716 U CN 201922136716U CN 211501698 U CN211501698 U CN 211501698U
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- sealing performance
- sealing sleeve
- gate valve
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Abstract
The utility model discloses a gate valve with high sealing performance, which relates to the field of gate valves and comprises a valve body, a valve cover, a gland and a valve rod, wherein the valve cover is fixedly arranged at the upper end of the valve body, and the gland is fixedly arranged at the upper end of the valve cover; still include a sealing sleeve, the valve rod rotationally wears to locate gland and valve gap to inside extending to the valve body, and the lateral wall of valve rod installs the sealing sleeve who offsets with the valve gap. The utility model discloses breakthroughly adopt the seal structure design of integration, with a plurality of seal part integration among the prior art to a seal sleeve in, greatly simplified the seal structure of gate valve on the one hand, reduced the installation component, be favorable to assembly and production, on the other hand has improved the sealing performance of gate valve effectively, can avoid appearing wearing and tearing ageing phenomenon that leads to leaking because of partial seal part.
Description
Technical Field
The utility model belongs to the technical field of the gate valve and specifically relates to a high sealing performance gate valve.
Background
The gate valve has wide application in water supply, drainage, heat supply and gas supply systems of petroleum, chemical industry, electric power, fire control and industrial enterprises, and is one of common parts for pipeline connection and fluid medium conveying. Wherein the non-rising stem gate valve is the gate valve of fire control field universal use, and its valve-stem nut establishes on the flashboard, and the during operation drives the valve rod through rotating the hand wheel and rotates to realize the lift of flashboard, have the advantage that installation space is little, be applicable to heavy-calibre or to the restricted gate valve of installation space.
The sealing structure of the non-rising stem gate valve is an important influence factor for determining the overall sealing performance of the non-rising stem gate valve. In the prior art, sealing is usually realized by adopting a sealing ring structure, i.e. O-shaped sealing rings are arranged at multiple positions between a valve rod and a valve cover, between a gland and the valve cover and the like simultaneously, so as to ensure the sealing performance of the upper part of the gate valve. However, the sealing structure needs many and loose parts, is extremely complicated to assemble, has high requirements on the dimensional accuracy of related parts, and is not beneficial to production and processing. In addition, the O-shaped sealing ring is easy to wear and age, the sealing performance is reduced after the O-shaped sealing ring is used for a long time, and the leakage phenomenon is caused.
Disclosure of Invention
The utility model provides a high sealing performance gate valve, the required part of seal structure of its main aim at solution current dark pole gate valve is many and loose, and the assembly is loaded down with trivial details, is unfavorable for production and processing and the easy problem of wearing and tearing ageing etc..
The utility model adopts the following technical scheme:
a gate valve with high sealing performance comprises a valve body, a valve cover, a gland and a valve rod, wherein the valve cover is fixedly arranged at the upper end of the valve body; still include a sealing sleeve, above-mentioned gland and valve gap are rotationally worn to locate by above-mentioned valve rod to extend to inside the valve body, and the above-mentioned sealing sleeve that offsets with the valve gap has been installed to the lateral wall of valve rod.
Further, the inner side wall of the valve cover is provided with a first annular step surface, so that a cavity for mounting the sealing sleeve is formed among the valve rod, the gland and the valve cover.
Further, this high leakproofness can gate valve still includes the stopper that is used for restricting the valve rod along the endwise slip, and above-mentioned valve rod is equipped with an annular recess, and above-mentioned stopper is installed in above-mentioned annular recess to be located between sealing sleeve and the gland.
Further, an annular flange is arranged on the outer side wall of the sealing sleeve, and a second annular step surface matched with the annular flange is arranged on one side, close to the gland, of the first annular step surface of the valve cover.
Furthermore, the inner side wall of the sealing sleeve is provided with a plurality of annular grooves.
Furthermore, the inner side wall at the upper end of the sealing sleeve is in a contraction shape.
Further, the sealing sleeve is made of rubber.
Further, the valve cover is connected with the valve body and the gland through bolts.
Compared with the prior art, the utility model discloses the beneficial effect who produces lies in:
1. the utility model discloses breakthroughly adopt the seal structure design of integration, with a plurality of seal part integration among the prior art to a seal sleeve in, greatly simplified the seal structure of gate valve on the one hand, reduced the installation component, be favorable to assembly and production, on the other hand has improved the sealing performance of gate valve effectively, can avoid appearing wearing and tearing ageing phenomenon that leads to leaking because of partial seal part.
2. The utility model discloses well sealing sleeve's inside wall is equipped with a plurality of annular grooves, both can be used to store lubricating oil, can reserve deformation space for sealing sleeve again, is favorable to improving sealing sleeve's stand wear and tear ability, prolongs its life.
3. The utility model discloses the inside wall of well sealing sleeve upper end is the shrink form, and the lateral wall is equipped with the annular flange, helps improving the sealed effect in plane, fully guarantees the sealing performance of gate valve.
Drawings
Fig. 1 is a sectional view of the present invention.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Fig. 3 is a cross-sectional view of the middle sealing sleeve of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details.
Referring to fig. 1, fig. 2 and fig. 3, a high sealing performance gate valve, including valve body 1, valve gap 2, gland 3, valve rod 4 and sealing sleeve 5, valve gap 2 sets firmly in 1 upper end of valve body, gland 3 sets firmly in 2 upper ends of valve gap, and the valve rod 3 upper end is connected with hand wheel 6, and inside gland 3 and valve gap 2 and the extension to valve body 1 were rotationally worn to locate at the middle part, the lower extreme passed through valve rod nut 41 and is connected with flashboard 7, and the sealing sleeve 5 that offsets with valve gap 2 has been installed to the lateral wall of valve rod 4. The utility model discloses breakthroughly adopt the seal structure design of integration, with a plurality of seal part integration among the prior art to a seal sleeve 5 in, greatly simplified the seal structure of gate valve on the one hand, reduced the installation component, be favorable to assembly and production, on the other hand has improved the sealing performance of gate valve effectively, can avoid appearing wearing and tearing ageing phenomenon that leads to leaking because of partial seal part.
Referring to fig. 1 and 2, specifically, the inner side wall of the bonnet 2 is provided with a first annular step surface 21, so that a cavity for installing the sealing sleeve 5 is formed among the valve rod 4, the gland 3 and the bonnet 2, and the sealing sleeve 5 is installed in the cavity, so that the sealing among the valve rod 4, the gland 3 and the bonnet 2 can be realized at the same time, and the defect that a plurality of sealing parts need to be arranged in the prior art is overcome.
Referring to fig. 1 and 2, specifically, the gate valve with high sealing performance further includes a limiting block 42 for limiting the axial sliding of the valve rod 4, the valve rod 4 is provided with an annular recess 421, and the limiting block 42 is installed in the annular recess 421 and is located between the sealing sleeve 5 and the gland 3, so that a limiting effect can be achieved and the valve rod 4 is prevented from sliding axially.
Referring to fig. 1, 2 and 3, specifically, the outer side wall of the sealing sleeve 5 is provided with an annular flange 51, and the valve cover 2 is provided with a second annular step surface 22 on the side of the first annular step surface 21 close to the gland 3 to be matched with the annular flange 51. The plane sealing effect of the sealing sleeve can be further improved by arranging the annular flange 51 on the outer side wall of the sealing sleeve 5, and the sealing performance of the sealing sleeve is ensured.
Referring to fig. 1, 2 and 3, in particular, the inner side wall of the sealing sleeve 5 is provided with a plurality of annular grooves 52. In order to ensure smooth rotation of the valve rod 4, the inner side wall of the sealing sleeve 5 needs to be coated with lubricating oil, so that the annular groove 52 can serve as a reservoir for lubricating oil. In addition, set up annular groove 52 and reserved the deformation space for sealing sleeve 5 equivalently, when sealing sleeve 5 received the extrusion, can take place deformation towards annular groove 52 to play the effect of buffering, and then improve sealing sleeve 5's stand wear and tear ability, prolong its life.
Referring to fig. 1, 2 and 3, in particular, the inner side wall of the upper end of the sealing sleeve 5 is in a contracted shape, so that the sealing performance of the sealing sleeve 5 can be further improved, and the sealing between the valve rod 4 and the valve cover 2 is ensured to be complete.
Referring to fig. 1, 2 and 3, as a preferred solution: the sealing sleeve 5 is made of rubber.
Referring to fig. 1 and 2, as a preferred solution: the bonnet 2 is connected with the valve body 1 and the gland 3 through bolts 23.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (8)
1. The utility model provides a high sealing performance gate valve, includes valve body, valve gap, gland and valve rod, the valve gap sets firmly in the valve body upper end, the gland sets firmly in the valve gap upper end, its characterized in that: still include a sealing sleeve, the valve rod rotationally wears to locate gland and valve gap to inside extending to the valve body, and the lateral wall of valve rod is installed and is inconsistent with the valve gap sealing sleeve.
2. A high sealing performance gate valve according to claim 1, wherein: the inner side wall of the valve cover is provided with a first annular step surface, so that a cavity for mounting the sealing sleeve is formed among the valve rod, the gland and the valve cover.
3. A high sealing performance gate valve according to claim 2, wherein: the valve rod is provided with an annular concave part, and the limiting block is arranged in the annular concave part and positioned between the sealing sleeve and the gland.
4. A high sealing performance gate valve according to claim 2, wherein: the outer side wall of the sealing sleeve is provided with an annular flange, and one side of the valve cover, which is close to the gland, of the first annular step surface is provided with a second annular step surface matched with the annular flange.
5. A high sealing performance gate valve according to claim 1, wherein: the inner side wall of the sealing sleeve is provided with a plurality of annular grooves.
6. A high sealing performance gate valve according to claim 1, wherein: the inner side wall of the upper end of the sealing sleeve is in a contraction shape.
7. A high sealing performance gate valve according to claim 1, wherein: the sealing sleeve is made of rubber.
8. A high sealing performance gate valve according to claim 1, wherein: the valve cover is connected with the valve body and the gland through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922136716.5U CN211501698U (en) | 2019-12-03 | 2019-12-03 | High sealing performance gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922136716.5U CN211501698U (en) | 2019-12-03 | 2019-12-03 | High sealing performance gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211501698U true CN211501698U (en) | 2020-09-15 |
Family
ID=72412968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922136716.5U Active CN211501698U (en) | 2019-12-03 | 2019-12-03 | High sealing performance gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211501698U (en) |
-
2019
- 2019-12-03 CN CN201922136716.5U patent/CN211501698U/en active Active
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