CN221257685U - Quick-change low-temperature butterfly valve - Google Patents
Quick-change low-temperature butterfly valve Download PDFInfo
- Publication number
- CN221257685U CN221257685U CN202323086830.4U CN202323086830U CN221257685U CN 221257685 U CN221257685 U CN 221257685U CN 202323086830 U CN202323086830 U CN 202323086830U CN 221257685 U CN221257685 U CN 221257685U
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- valve
- valve body
- sealing
- plate
- connecting piece
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- 238000007789 sealing Methods 0.000 claims abstract description 92
- 238000012856 packing Methods 0.000 claims description 23
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of valves, and particularly discloses a quick-change low-temperature butterfly valve which comprises a valve body, wherein a valve seat is arranged on the valve body, a valve rod is rotatably connected with the valve body, and a valve plate is arranged on the valve rod; the sealing structure comprises a sealing plate arranged on the valve plate, the sealing plate is provided with a first sealing surface, and the valve seat is provided with a second sealing surface which can generate extrusion with the first sealing surface; the connecting piece is detachably connected with the valve body and used for fixing the valve body. According to the utility model, through the sealing structure formed between the sealing plate and the valve seat and between the sealing plate and the valve seat, a sealing ring between the valve plate and the sealing plate can be omitted, quick assembly and disassembly are realized, and meanwhile, through the connecting piece which can be detachably connected with the valve body, the valve body can be installed on a pipeline flange with similar specification, and the application range of the butterfly valve is enlarged.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a quick-change low-temperature butterfly valve.
Background
The specification of the butterfly valve comprises nominal pressure and nominal diameter, and in the pipeline flanges with different specifications, the connection sizes of the butterfly valves with different nominal pressures and nominal diameters and the pipeline flanges are different. The nominal pressure is classified into a American standard Class series, an European standard PN series, a Japanese standard JIS series and the like according to the country where the standard is established, and the standards are not very different, but if the devices adopting different flange standards cannot be normally connected together.
For the butt-clamping type low-temperature butterfly valve, although the valve body is not provided with a flange, the upper part and the lower part of the valve body are provided with 2 positioning holes respectively, and when the butt-clamping type low-temperature butterfly valve is installed, the pipeline flange and the valve body positioning holes can be connected by bolts, so that the valve body can be positioned in the center of a pipeline, and the butterfly valve is convenient to install. The locating holes correspond to the pipeline flanges, so that the sizes of the locating holes of flanges with different standards are different. Meanwhile, a gasket is often needed to be added between valve plates to prevent medium from leaking between the valve plates and the gasket, so that the cost is increased, more parts can also cause the time cost of maintenance to be increased during regular maintenance, the disassembly and assembly efficiency of the butterfly valve is affected, and the applicant proposes a quick-change low-temperature butterfly valve in view of the fact.
Disclosure of utility model
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a quick-change low-temperature butterfly valve, which is used for solving the problem of low disassembly and assembly efficiency of a clamp-type butterfly valve in the prior art.
To achieve the above and other related objects, the present utility model provides a quick-change type low temperature butterfly valve, comprising:
The valve body is provided with a valve seat, the valve body is rotationally connected with a valve rod, and the valve rod is provided with a valve plate;
A sealing structure comprising a sealing plate disposed on the valve plate, the sealing plate having a first sealing surface, the valve seat having a second sealing surface capable of producing compression with the first sealing surface;
The connecting piece, the connecting piece with the valve body can dismantle the connection, the connecting piece is used for fixing the valve body.
Optionally, the sealing structure further comprises a sealing gasket, and the sealing gasket is arranged between the valve seat and the valve body.
Optionally, a plurality of connecting screws detachably connected with the valve body are arranged on the valve seat, and the sealing gasket is installed between the valve seat and the valve body through the connecting screws.
Optionally, a plurality of first connecting holes are formed in the valve plate, a plurality of second connecting holes corresponding to the first connecting holes are formed in the sealing plate, and a plurality of fixing screws used for connecting the first connecting holes and the second connecting holes are arranged on the valve plate.
Optionally, the connecting piece is provided with a positioning hole connected with the valve body, and the connecting piece is provided with a fixing hole for fixing the valve body.
Optionally, the connecting piece is provided with a positioning screw, and the connecting piece is connected with the valve body through the positioning screw.
Optionally, a valve cover for sealing the valve body is detachably connected to the valve body.
Optionally, the valve body is detachably connected with a shaft sleeve, and the shaft sleeve is sleeved on the valve rod.
Optionally, a support is arranged on the shaft sleeve, and a packing assembly for sealing the valve rod is arranged in the support.
Optionally, a packing groove is formed in one end, far away from the valve body, of the shaft sleeve, the packing assembly comprises packing arranged in the packing groove and a gland arranged on the packing groove, and a pressing spring is arranged between the gland and the packing.
As described above, the quick-change low-temperature butterfly valve provided by the utility model has the following beneficial effects:
(1) Compared with the prior art, the sealing plate replaces the sealing ring of the traditional butterfly valve, and a sealing structure is formed between the sealing plate and the valve seat in the working process of the butterfly valve to generate a sealing effect, so that a gasket is not required to be arranged between the sealing plate and the valve seat, the valve plate and the sealing plate are more convenient and quick to install and detach, and the cost is reduced.
(2) Compared with the prior art, the valve body is connected with the pipeline flange by the connecting piece which is detachable from the valve body, and when the valve body is required to be connected with the pipeline flange with similar specification, the valve body can be connected with the pipeline flange by the proper connecting piece, so that the practical range of the installation of the butterfly valve is enlarged, and the function is more comprehensive.
Drawings
FIG. 1 is a front view of an embodiment of the present utility model;
FIG. 2 shows a cross-sectional view of an embodiment of the present utility model;
FIG. 3 shows an enlarged view at A in an embodiment of the utility model;
FIG. 4 is a front view of a connector according to an embodiment of the present utility model;
FIG. 5 is a schematic view of a seal structure according to an embodiment of the utility model;
fig. 6 shows a schematic diagram of the prior art.
Reference numerals illustrate:
The valve comprises a valve body 1, a connecting piece 2, a positioning hole 201, a fixing hole 202, a positioning screw 3, a valve seat 4, a second sealing surface 401, a connecting screw 5, a sealing gasket 6, a valve plate 7, a sealing plate 8, a first sealing surface 801, a fixing screw 9, a cylindrical pin 10, a shaft sleeve 11, a bracket 12, a packing 13, a spring 14, a gland 15, a valve rod 16, a valve cover 17, a sealing ring 18 and a sealing ring 19.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.
It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex. The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
Before the present utility model is exemplarily described, a structure of the prior art is described, as shown in fig. 6, in the prior art, a sealing ring 19 needs to be disposed on a valve plate 7 to ensure sealing performance of a sealing ring 18, and in the process of installation and disassembly, the sealing ring 18 needs to be opened, and then the sealing ring 19 is installed or disassembled, so that a plurality of disassembly steps are caused, and the disassembly efficiency is low.
As shown in fig. 1-6, the present utility model provides a quick-change low-temperature butterfly valve.
In an exemplary embodiment, a quick change cryogenic butterfly valve includes:
the valve body 1, the valve body 1 is provided with a valve seat 4, the valve body 1 is rotatably connected with a valve rod 16, and the valve rod 16 is provided with a valve plate 7;
A seal structure including a seal plate 8 provided on the valve plate 7, the seal plate 8 having a first seal surface 801, and the valve seat 4 having a second seal surface 401 capable of generating compression with the first seal surface 801;
The connecting piece 2, connecting piece 2 and valve body 1 detachable connection, connecting piece 2 are used for fixed valve body 1.
In this embodiment, through the closing plate 8 that sets up, replaced the sealing washer 18 of traditional butterfly valve, in butterfly valve course of working, make seal structure between closing plate 8 and the disk seat 4, produce sealed effect, consequently need not to set up the gasket again between closing plate 8 and disk seat 4, more convenient and fast when installing, dismantling valve plate 7 and closing plate 8, the cost is reduced simultaneously.
In this embodiment, through still with valve body 1 detachable connecting piece 2, when valve body 1 needs to be connected with the pipeline flange of similar specification, can select suitable connecting piece 2 to be connected valve body 1 and pipeline flange, enlarged the practical range of butterfly valve installation, the function is more comprehensive.
The sealing pair is formed by extruding the first sealing surface 801 of the sealing plate 8 and the second sealing surface 401 of the valve seat 4. The contact surface of the sealing plate 8 and the valve seat 4 is an inclined conical surface. The contact angle between the sealing plate 8 and the valve seat 4 creates a slight "wedge effect" that holds the first sealing surface 801 on the sealing plate 8 tightly against the second sealing surface 401 of the valve seat 4. Due to the uniform contact between the valve seat 4 and the sealing plate 8, the load applied to the valve seat 4 is uniform, so that the narrowest cut-off is achieved with the least torque. The elasticity of the torque generation causes the valve to shut tightly.
In an exemplary embodiment, the sealing structure further comprises a sealing gasket 6, the sealing gasket 6 being arranged between the valve seat 4 and the valve body 1.
In this embodiment, the sealing gasket 6 disposed between the valve seat 4 and the valve body 1 can seal the gap between the valve body 1 and the valve seat 4, preventing leakage of the medium from the gap between the valve body 1 and the valve seat 4, and effectively ensuring the sealing performance of the valve.
In this embodiment, the valve seat 4 is installed on the valve body 1 through the connection screw 5, and similarly, the sealing gasket 6 is installed between the valve seat 4 and the valve body 1 through the connection screw 5, and after the connection screw 5 is removed, the valve seat 4 and the sealing gasket 6 can be removed at the same time, so that the convenience in disassembly and assembly of the valve seat 4 and the sealing gasket 6 is improved.
Illustratively, the plurality of connecting screws 5 in this embodiment are uniformly distributed along the circumference of the central axis of the valve seat 4, so as to ensure the stability of the installation of the valve seat 4.
It is worth to describe that in this embodiment, the valve seat 4 adopts the split valve seat 4, is connected with the valve body 1 through the connecting screw 5, and the valve seat 4 also can be integrated into one piece with the valve body 1, adopts integrated into one piece's mode can effectively ensure sealing performance, can not add sealing gasket 6 again and also can realize sealed function.
In an exemplary embodiment, the valve plate 7 is provided with a plurality of first connection holes, the sealing plate 8 is provided with a plurality of second connection holes corresponding to the first connection holes, and the valve plate 7 is provided with a plurality of fixing screws 9 for connecting the first connection holes and the second connection holes.
In this embodiment, through the first connecting hole and the second connecting hole that set up for valve plate 7 and closing plate 8 can be convenient, swift realization installation and tear open.
Illustratively, in this embodiment, the valve plate 7 and the sealing plate 8 are installed by installing a plurality of fixing screws 9, the specific number of the fixing screws 9 is determined according to the area of the sealing plate 8, and the fixing screws 9 may be increased to enhance the connection strength between the sealing plate 8 and the valve plate 7 as the area of the sealing plate 8 is larger.
In this embodiment, the valve plate 7 is detachably connected to the valve rod 16 by the cylindrical pin 10, and the connection manner is in the prior art, which is not described herein, so that the valve plate 7 can be driven to rotate by the valve rod 16.
It should be noted that, in this embodiment, the valve plate 7 and the sealing plate 8 may be integrated, and when the valve plate 7 and the valve rod 16 are installed, the sealing plate 8 can be automatically installed, so that the step of installing the sealing plate 8 is omitted.
In an exemplary embodiment, the connecting member 2 is provided with a positioning hole 201 connected to the valve body 1, and the connecting member 2 is provided with a fixing hole 202 for fixing the valve body 1.
In this embodiment, through set up locating hole 201 on connecting piece 2 for connecting piece 2 can carry out detachable with valve body 1 and be connected, to same kind of valve body 1, the size of locating hole 201 can be set up according to the pre-processing hole on the valve body 1, and fixed orifices 202 corresponds with the hole on the pipeline flange, in order to realize connecting piece 2 and pipeline flange's connection, to the pipeline flange that the specification is close, can adopt a plurality of locating holes 201 size the same, connecting piece 2 that fixed orifices 202 size is different links to each other with the pipeline flange, thereby make valve body 1 can install on the pipeline flange of similar specification, the application scope of butterfly valve has been promoted.
Illustratively, in the present embodiment, the number of the positioning holes 201 is two, the number of the fixing holes 202 is two, and the positioning holes 201 and the fixing holes 202 are each arranged in the circumferential direction so as to be connected with the valve body 1 or the pipe flange.
Illustratively, in the present embodiment, two positioning holes 201 on the connecting member 2 are connected to the valve body 1 by two positioning screws 3, so that the connecting member 2 can be fixed to the valve body 1.
In an exemplary embodiment, the valve body 1 is detachably connected with a valve cover 17 for sealing the valve body 1.
In this embodiment, the valve cover 17 is disposed at the lower end of the valve body 1, so that the valve body 1 can be sealed, and leakage of medium can be avoided.
Illustratively, in the present embodiment, the valve cover 17 is mounted at the lower end of the valve body 1 by bolts.
In an exemplary embodiment, the valve body 1 is detachably connected with a shaft sleeve 11, and the shaft sleeve 11 is sleeved on the valve rod 16.
In this embodiment, the valve rod 16 is conveniently fixed by the shaft sleeve 11, and the bracket 12 can be installed by the shaft sleeve 11.
Illustratively, the sleeve 11 is provided with a support 12, and a packing 13 assembly for sealing the valve stem 16 is provided within the support 12.
Illustratively, a packing 13 groove is formed in one end, far away from the valve body 1, of the shaft sleeve 11, and the packing 13 assembly comprises a packing 13 arranged in the packing 13 groove and a gland 15 arranged on the packing 13 groove, and a packing spring 14 is arranged between the gland 15 and the packing 13.
It should be noted that the packing 13 assembly in this embodiment is mainly used for sealing the valve body 1, and avoids the medium from leaking upward from the gap between the valve stem 16 and the valve body 1.
In summary, according to the utility model, through the sealing structure formed between the sealing plate 8 and the valve seat 4, and between the sealing plate 8 and the valve seat 4, the sealing ring 18 between the valve plate 7 and the sealing plate 8 can be omitted, so that quick assembly and disassembly can be realized, and meanwhile, the valve body 1 can be installed on a pipeline flange with similar specification through the connecting piece 2 which can be detachably connected with the valve body 1, so that the application range of the butterfly valve is enlarged.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A quick change cryogenic butterfly valve, comprising:
The valve body is provided with a valve seat, the valve body is rotationally connected with a valve rod, and the valve rod is provided with a valve plate;
A sealing structure comprising a sealing plate disposed on the valve plate, the sealing plate having a first sealing surface, the valve seat having a second sealing surface capable of producing compression with the first sealing surface;
The connecting piece, the connecting piece with the valve body can dismantle the connection, the connecting piece is used for fixing the valve body.
2. The quick change cryogenic butterfly valve of claim 1, wherein: the sealing structure further comprises a sealing gasket, and the sealing gasket is arranged between the valve seat and the valve body.
3. The quick change cryogenic butterfly valve of claim 2, wherein: the valve seat is provided with a plurality of connecting screws which are detachably connected with the valve body, and the sealing gasket is arranged between the valve seat and the valve body through the connecting screws.
4. The quick change cryogenic butterfly valve of claim 1, wherein: the valve plate is provided with a plurality of first connecting holes, the sealing plate is provided with a plurality of second connecting holes corresponding to the first connecting holes, and the valve plate is provided with a plurality of fixing screws for connecting the first connecting holes and the second connecting holes.
5. The quick change cryogenic butterfly valve of claim 1, wherein: the connecting piece is provided with a positioning hole connected with the valve body, and the connecting piece is provided with a fixing hole for fixing the valve body.
6. The quick change cryogenic butterfly valve of claim 5, wherein: the connecting piece is provided with a positioning screw, and the connecting piece is connected with the valve body through the positioning screw.
7. The quick change cryogenic butterfly valve of claim 1, wherein: and the valve body is detachably connected with a valve cover for sealing the valve body.
8. The quick change cryogenic butterfly valve of claim 1, wherein: the valve body is detachably connected with a shaft sleeve, and the shaft sleeve is sleeved on the valve rod.
9. The quick change cryogenic butterfly valve of claim 8, wherein: the shaft sleeve is provided with a support, and a packing assembly for sealing the valve rod is arranged in the support.
10. The quick change cryogenic butterfly valve of claim 9, wherein: the packing assembly comprises packing arranged in the packing groove and a gland arranged on the packing groove, and a pressing spring is arranged between the gland and the packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323086830.4U CN221257685U (en) | 2023-11-14 | 2023-11-14 | Quick-change low-temperature butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323086830.4U CN221257685U (en) | 2023-11-14 | 2023-11-14 | Quick-change low-temperature butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221257685U true CN221257685U (en) | 2024-07-02 |
Family
ID=91657878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323086830.4U Active CN221257685U (en) | 2023-11-14 | 2023-11-14 | Quick-change low-temperature butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221257685U (en) |
-
2023
- 2023-11-14 CN CN202323086830.4U patent/CN221257685U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |