CN222102792U - Bellows gate valve with double seal structure in the middle barrel - Google Patents
Bellows gate valve with double seal structure in the middle barrel Download PDFInfo
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- CN222102792U CN222102792U CN202420744133.9U CN202420744133U CN222102792U CN 222102792 U CN222102792 U CN 222102792U CN 202420744133 U CN202420744133 U CN 202420744133U CN 222102792 U CN222102792 U CN 222102792U
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- 238000007789 sealing Methods 0.000 claims abstract description 161
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a bellows gate valve with well bucket dual seal structure, including the valve body, well bucket and valve gap, well bucket sets up between valve body and valve gap, set up well bucket upper seal unit and well bucket lower seal unit between well bucket and valve gap and the valve body respectively, well bucket upper seal unit is including seting up the sealing member annular on well bucket and setting up the annular seal in the sealing member annular, the top and the bottom indent of annular seal form the sealing member annular respectively, well bucket and valve gap correspond the sealing member annular and set up well bucket sealing end and valve gap sealing end, well bucket sealing end and valve gap sealing end stretch into the sealing member annular that corresponds and seal sealing meet, the outer loop side of annular seal is close to the one end of well bucket and sets up the ladder sealing portion, the sealing member annular corresponds the ladder sealing portion and sets up the sealing ladder, ladder sealing portion is closely laminated with the sealing ladder.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a corrugated pipe gate valve with a middle barrel double-sealing structure.
Background
The bellows gate valve is also called a bellows sealing stop valve, and a metal barrier is formed between a fluid medium and the atmosphere by automatic roll welding, so that the design of zero leakage of a valve rod is ensured. In the existing bellows gate valve, the sealing between the barrel and the valve cover and the valve body is usually carried out by adopting a common sealing gasket and a set screw, and a good sealing effect cannot be achieved.
Disclosure of Invention
In view of this, the present utility model provides a bellows gate valve having a double sealing structure of a middle tub.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a bellows gate valve with well bucket dual seal structure, includes valve body, well bucket and valve gap, well bucket sets up between valve body and valve gap, set up well bucket upper seal unit and well bucket lower seal unit between well bucket and valve gap and the valve body respectively, well bucket upper seal unit is including seting up the sealing member annular on well bucket and setting up the annular seal in the sealing member annular, the top and the bottom of annular seal indent respectively form the sealing member annular, well bucket and valve gap correspond sealing member annular and set up well bucket seal end and valve gap seal end, well bucket seal end and valve gap seal end stretch into the sealing member annular that corresponds and seal meet, the one end that the outer loop side of annular seal is close to well bucket sets up ladder sealing portion, the sealing member annular corresponds the ladder sealing portion and sets up the seal ladder, ladder sealing portion and seal ladder closely laminate.
Preferably, the upper sealing unit and the lower sealing unit of the middle barrel are symmetrically arranged by taking the radial central line of the middle barrel as the center.
Preferably, the cross sections of the sealing end of the middle barrel and the sealing end of the valve cover are in spherical structures, the ring groove of the sealing element corresponds to the structures of the sealing end of the middle barrel and the sealing end of the valve cover, and the notch of the ring groove of the sealing element is smaller than the nominal inner diameter of the ring groove of the sealing element.
Preferably, the middle barrel sealing end and the valve cover sealing end are arranged in an annular structure, at least two middle barrel sealing ends and at least two valve cover sealing ends are arranged, and the middle barrel sealing ends and the valve cover sealing ends are arranged in a staggered mode.
Preferably, the step sealing part is provided with at least one step, and the step sealing part is provided with anti-skid waves.
Preferably, the annular sealing member is made of chloroprene rubber.
Preferably, the step sealing part is provided with a rounding.
The annular sealing piece has the beneficial effects that the annular sealing piece has good elasticity and wear resistance, can effectively prevent medium leakage and prolongs the service life of the valve. In addition, the sealing performance and stability of the sealing end of the middle barrel and the sealing end of the valve cover are fully considered, and the sealing end extend into the ring groove of the sealing element and are tightly attached to the sealing element, so that an effective sealing structure is formed, and leakage of medium from the valve is effectively prevented. The design of the step seal and the seal steps can also improve the contact area between the annular seal and the middle barrel. The two are tightly attached, so that the medium can be prevented from leaking from the ring groove of the sealing element, and the sealing performance of the valve is further improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
Fig. 2 is an enlarged view at a in fig. 1.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model will be further described with reference to the drawings.
The utility model provides the following technical scheme:
As shown in fig. 1-2, the utility model discloses a bellows gate valve with a middle barrel sealing structure, which comprises a valve body 1, a middle barrel 2 and a valve cover 3, wherein the middle barrel 2 is arranged between the valve body 1 and the valve cover 3, a middle barrel upper sealing unit 4 and a middle barrel lower sealing unit 5 are respectively arranged between the middle barrel 2 and the valve cover 3 and between the valve body 1, the middle barrel 2 upper sealing unit comprises a sealing ring groove 6 arranged on the middle barrel 2 and an annular sealing member 7 arranged in the sealing ring groove 6, the top and the bottom of the annular sealing member 7 are respectively concaved inwards to form a sealing ring groove 8, the middle barrel 2 and the valve cover 3 are respectively provided with a middle barrel sealing end 9 and a valve cover sealing end 10, the middle barrel sealing end 9 and the valve cover sealing end 10 extend into the corresponding sealing ring groove 8 to be in sealing connection, one end of the annular sealing member 7, the outer ring side of the sealing member 7 is close to one end of the middle barrel 2 is provided with a step sealing part 11, the step sealing part 11 is provided with a sealing step groove 11, and the step sealing part 11 is tightly attached to the sealing ring groove 8. Specifically, in this design, sealing unit 4 and well bucket under the sealing unit 5 are symmetrical structure setting about well bucket 2 radial central line as the center, and stability and the leakproofness of valve can be guaranteed in such structure setting, and simultaneously, annular seal 7's design makes it have good elasticity and wearability, can prevent effectively that the medium from leaking, improves the life of valve. In addition, the sealing performance and stability are fully considered by the design of the sealing end 9 of the middle barrel and the sealing end 10 of the valve cover, and the sealing ends extend into the ring groove 8 of the sealing element and are tightly attached to the sealing element, so that an effective sealing structure is formed, and the leakage of medium from the valve is effectively prevented. The design of the stepped seal 11 and the seal steps also improves the contact area between the annular seal 7 and the inner tub 2. The two are tightly attached, so that the medium can be prevented from leaking from the ring groove 6 of the sealing element, and the sealing performance of the valve is further improved.
Further, the cross sections of well bucket seal end 9 and valve gap seal end 10 all are spherical structure setting, the structure setting of well bucket seal end 9 and valve gap seal end 10 is corresponding to sealing member annular 8, the notch of sealing member annular 8 is less than the nominal internal diameter of sealing member annular, well bucket seal end 9 and valve gap seal end 10 are annular structure setting, well bucket seal end 9 and valve gap seal end 10 set up two at least, and well bucket seal end 9 and valve gap seal end 10 between crisscross setting. Specifically, in this embodiment, the sealing ends 9 of the middle barrel and the sealing ends 10 of the valve cover are staggered, which can effectively prevent medium leakage, and can ensure that the end faces of the two ends of the annular sealing member 7 are accepted uniformly, thereby improving the sealing performance of the bellows gate valve. In addition, the cross section of well bucket seal end 9 and valve gap seal end 10 is spherical structure setting, can closely laminate with the sealed face of well bucket 2 and valve gap 3, has further strengthened sealed effect. Meanwhile, the notch of the sealing element annular groove 8 is smaller than the nominal inner diameter of the sealing element annular groove, so that the annular sealing element 7 can be effectively prevented from falling off from the sealing element annular groove 6, and the stability and reliability of the corrugated pipe gate valve are ensured.
Further, the step seal 11 has at least one step, and an anti-slip corrugation (not shown) is provided on the step seal 11. Specifically, in the present embodiment, the anti-slip corrugations are of annular configuration and are uniformly distributed along the outer peripheral side of the stepped seal portion 11. The design of the anti-skid corrugation enhances the sealing performance and effectively prevents the possibility of leakage of the medium under high pressure. Meanwhile, the existence of the anti-slip corrugation also provides additional support, so that the sealing structure is more stable and reliable.
Furthermore, the annular sealing member 7 is made of chloroprene rubber, and the chloroprene rubber annular sealing member 7 has good elasticity and wear resistance and can maintain stable sealing performance under severe environments such as high temperature, high pressure and corrosive media. The selection of the material enables the bellows gate valve to show excellent sealing effect and service life in various application scenes.
Further, the step seal 11 is provided with a rounded corner. Specifically, in this embodiment, the design of chamfer can effectively reduce the friction between the sealed face, reduces wearing and tearing, improves sealing performance and life. Meanwhile, the rounding can effectively prevent the medium from accumulating between the sealing surfaces, and the sealing performance and the reliability of the corrugated pipe gate valve are further improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The corrugated pipe gate valve with the double sealing structure of the middle barrel comprises a valve body, the middle barrel and a valve cover and is characterized in that the middle barrel is arranged between the valve body and the valve cover, a middle barrel upper sealing unit and a middle barrel lower sealing unit are respectively arranged between the middle barrel and the valve cover and between the valve body, the middle barrel upper sealing unit comprises a sealing ring groove arranged on the middle barrel and an annular sealing piece arranged in the sealing ring groove, the top and the bottom of the annular sealing piece are respectively concave inwards to form the sealing ring groove, the middle barrel and the valve cover are provided with a middle barrel sealing end and a valve cover sealing end corresponding to the sealing ring groove, the sealing end of the middle barrel and the sealing end of the valve cover extend into the corresponding sealing ring groove to be in sealing connection with the sealing piece, one end of the outer ring side of the annular sealing piece, which is close to the middle barrel, is provided with a sealing step corresponding to the sealing step, and the step sealing part is tightly attached to the sealing step.
2. The bellows gate valve with a double sealing structure of a middle barrel according to claim 1, wherein the upper sealing unit and the lower sealing unit are arranged in a symmetrical structure with respect to a radial center line of the middle barrel.
3. The bellows gate valve with the double sealing structure of the middle barrel of claim 1, wherein the cross sections of the sealing end of the middle barrel and the sealing end of the valve cover are in spherical structures, the ring groove of the sealing element is arranged corresponding to the structures of the sealing end of the middle barrel and the sealing end of the valve cover, and the notch of the ring groove of the sealing element is smaller than the nominal inner diameter of the ring groove of the sealing element.
4. The bellows gate valve with the double sealing structure of the middle barrel of claim 1, wherein the sealing ends of the middle barrel and the sealing ends of the valve cover are arranged in an annular structure, at least two sealing ends of the middle barrel and the sealing ends of the valve cover are arranged, and the sealing ends of the middle barrel and the sealing ends of the valve cover are arranged in a staggered mode.
5. The bellows gate valve with a double sealing structure of a middle tub as claimed in claim 1, wherein the step sealing part has at least one step, and the step sealing part is provided with anti-slip corrugations.
6. The bellows gate valve with a double sealing structure of a middle tub as claimed in claim 1, wherein the annular sealing member is made of chloroprene rubber.
7. The bellows gate valve with a double sealing structure of a middle tub as claimed in claim 5, wherein the stepped sealing part is provided with a rounded corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420744133.9U CN222102792U (en) | 2024-04-11 | 2024-04-11 | Bellows gate valve with double seal structure in the middle barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420744133.9U CN222102792U (en) | 2024-04-11 | 2024-04-11 | Bellows gate valve with double seal structure in the middle barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222102792U true CN222102792U (en) | 2024-12-03 |
Family
ID=93616603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420744133.9U Active CN222102792U (en) | 2024-04-11 | 2024-04-11 | Bellows gate valve with double seal structure in the middle barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222102792U (en) |
-
2024
- 2024-04-11 CN CN202420744133.9U patent/CN222102792U/en active Active
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