CN212004366U - Sealing structure, sealing device for valve and valve - Google Patents
Sealing structure, sealing device for valve and valve Download PDFInfo
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- CN212004366U CN212004366U CN202020594998.3U CN202020594998U CN212004366U CN 212004366 U CN212004366 U CN 212004366U CN 202020594998 U CN202020594998 U CN 202020594998U CN 212004366 U CN212004366 U CN 212004366U
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Abstract
The utility model discloses a sealing structure, a sealing device for a valve and a valve, wherein the sealing structure comprises a first sealing element and a second sealing element which are both closed rings and made of anti-corrosion materials; the closed ring is suitable for being sleeved on a component to be sealed, the two sealing pieces are arranged in a stacked mode, and the mutual abutting positions of the two sealing pieces are matched through the slope surfaces. The sealing device comprises a first sealing structure and the sealing structure; the valve includes a sealing device. When the first sealing element and the second sealing element are deformed by the axial extrusion force along the closed ring, due to the slope surface matching mode of the first sealing element and the second sealing element, the deformation has components in the axial direction and the radial direction of the closed ring, so that the first sealing element and the second sealing element can realize bidirectional sealing in the radial direction and the axial direction of the closed ring to the area between two components to be sealed in a sleeving relation, and the sealing performance of the sealing structure is improved; meanwhile, the sealing device can be used under the working condition of corrosive media.
Description
Technical Field
The utility model relates to a technical field of valve, concretely relates to seal structure, be used for sealing device and valve of valve.
Background
In the present valve industry, the media types that the downstream operating mode that the valve is located relates to are very many, for example, the acid in the chemical industry or the corrosive medium of alkali, or toxic medium, between valve rod and the valve body or between valve body and the valve gap in the conventional valve, set up first seal structure usually, for example, first seal structure is sealed for graphite packing or graphite gasket, when the valve uses under above-mentioned corrosive medium or toxic medium operating mode, for preventing that the toxic medium or corrosive medium in the valve cavity contacts with seal structure, can corrode or pollute this way seal structure, in order to solve this technical problem, set up the second seal between valve rod and valve body among the prior art, or between valve body and the valve gap.
Use the sealed between valve rod and the valve body as the example, for example, O type sealing washer is established for the cover on the valve rod to the second seal structure, and the sealing washer is for the first sealed valve intracavity that is closer to of graphite formation, blocks the medium flow direction first seal structure of valve intracavity through setting up of O type sealing washer to play the guard action to first seal structure.
However, the valve rod and the valve body are sealed by the sealing ring, the sealing ring only plays a role in sealing between the valve rod and the valve body in the radial direction of the valve rod, and when the radial sealing between the valve rod and the valve body by the sealing ring fails, a medium in a valve cavity can still penetrate through a gap between the sealing ring and the valve rod to corrode or pollute the first sealing structure, so that the sealing property between the valve rod and the valve body is poor; similarly, poor sealing between the valve body and the valve cover is caused, and finally, the service life of the valve is short.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to solve the technical problem that the leakproofness of the seal structure between the valve rod in the current valve and the valve body, between valve body and the valve gap is poor, leads to the life weak point of valve.
Therefore, the utility model provides a sealing structure, include
The first sealing element and the second sealing element are closed rings and are made of anti-corrosion materials; the closed ring is suitable for being sleeved on a component to be sealed, the first sealing element and the second sealing element are arranged in a stacked mode, and the abutting positions of the first sealing element and the second sealing element are matched through slope surfaces;
the first and second seals are deformable upon application of a compressive force in the axial direction of the closure ring.
Optionally, in the above sealing structure, the slope has a smooth surface.
Optionally, in the sealing structure described above, the longitudinal cross-sectional shape of the first sealing element and/or the second sealing element is a trapezoid, one oblique side of the trapezoid is used as the slope, and the short side and the long side of the trapezoid are parallel to each other along the axial direction of the closed ring.
Optionally, in the above sealing structure, the corrosion-resistant material is plastic or rubber.
The utility model provides a sealing device for valve, include
A first sealing structure;
the second sealing structure is arranged in parallel with the first sealing structure and is arranged between the first part to be sealed and the second part to be sealed in a sealing manner;
the second sealing structure is closer to one side of the valve cavity of the valve body than the first sealing structure;
at least the second seal is the seal of any of the above;
the first part to be sealed is a valve rod or a valve cover, and the second part to be sealed is a valve body.
Optionally, in the sealing device for a valve, a first groove and a second groove are arranged side by side at the position where the first component to be sealed and the second component to be sealed are matched with each other;
the second groove is closer to one side of the valve cavity of the valve body than the first groove, and the first sealing structure and the second sealing structure are respectively and tightly arranged in the first groove and the second groove.
Optionally, in the sealing device for a valve described above, the outer peripheral wall of the first component to be sealed is provided with a first annular step, the inner peripheral wall of the second component to be sealed is provided with a second annular step, and the step surfaces of the first annular step and the second annular step are opposite to each other to form the first groove or the second groove.
Optionally, in the sealing device for a valve, when the first component to be sealed is a valve cover, the first groove and the second groove are distributed in a stepped manner.
The utility model provides a valve, include
The valve body is provided with a valve cavity and an installation cavity, and the two ends of the installation cavity are respectively communicated with the outside and the middle of the valve cavity; openings at two ends of the valve cavity are respectively used as an inflow port and an outflow port;
one end of the valve rod penetrates through the mounting cavity and extends into the valve cavity;
a valve cover arranged on the outflow port;
at least two sets of sealing devices for the valve, wherein one set of sealing device is arranged between the inner wall of the mounting cavity and the part of the valve rod extending into the mounting cavity in a winding mode, and the other set of sealing device is arranged between the inner wall surface of the outflow opening and the part of the valve cover extending into the outflow opening in a winding mode.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a sealing structure, which comprises a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are both closed rings and are made of anti-corrosion materials; the closed ring is suitable for being sleeved on a component to be sealed, the first sealing element and the second sealing element are arranged in a stacked mode, and the abutting positions of the first sealing element and the second sealing element are matched through a slope surface.
When the first sealing element and the second sealing element are subjected to axial extrusion force along the closed ring, the first sealing element and the second sealing element are extruded and deformed along the slope surface due to the slope surface matching mode of the first sealing element and the second sealing element, the deformation has components in the axial direction and the radial direction of the closed ring, and therefore the first sealing element and the second sealing element can realize bidirectional sealing in the radial direction and the axial direction of the closed ring in a region between two parts to be sealed with a sleeving relation, and the sealing performance of the sealing structure is improved. Meanwhile, the two sealing elements are made of anti-corrosion materials, so that the sealing device can be used under the working condition of corrosive media.
2. The utility model provides a seal structure, domatic smooth surface that is convenient for to the manufacturing of two sealing members.
3. The utility model provides a sealing device for a valve, which comprises a first sealing structure and a second sealing structure; the second sealing structure and the first sealing structure are arranged side by side and are arranged between the first part to be sealed and the second part to be sealed in a sealing manner; the second sealing structure is closer to one side of the valve cavity of the valve body than the first sealing structure.
Under the working condition of corrosive medium, the second sealing structure adopts any one of the sealing structures, so that on one hand, the second sealing structure has corrosion resistance, on the other hand, the second sealing structure can seal between the valve rod and the valve body in the radial direction and the axial direction of the valve rod, or seal between the valve cover and the valve body, and the sealing property of the second sealing structure is improved; meanwhile, the second sealing structure is closer to the valve cavity, so that the first sealing structure is protected, the first sealing structure is prevented from being corroded or polluted by a corrosive medium, and the sealing performance of the whole sealing device is improved.
4. In the sealing device for the valve, the first groove and the second groove are arranged side by side at the mutually matched positions of the first part to be sealed and the second part to be sealed; the first sealing structure and the second sealing structure are respectively arranged in the first groove and the second groove, so that the two sealing structures can be conveniently installed.
5. The utility model provides a valve, including valve body, valve rod, valve gap and two sets at least above-mentioned arbitrary sealing device for valve of any, one set of sealing device stretches into between the part of installation cavity around the installation intracavity wall of establishing at the valve body and valve rod, and one set of sealing device stretches into between the part of egress opening around establishing at the egress opening internal face of valve pocket and valve gap.
This valve, owing to adopt foretell sealing device, seal between to valve rod and the valve body, and between valve gap and the valve body to when making the valve use in corrosive medium, when having corrosion resistance, realize radial and axial two-way seal at the valve rod when forming multichannel sealed between valve rod and the valve body, improve the performance of this valve, prolong the life of valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic axial sectional view of a valve provided in embodiment 3 of the present invention;
FIG. 2 is an enlarged view of a portion of the valve of FIG. 1 at A;
FIG. 3 is a schematic view of a portion of the valve of FIG. 2 with the press sleeve and bearing removed;
description of reference numerals:
1-a valve body; 11-an annular projection; 2-a valve stem; 3-a first sealing structure; 31-pressing sleeve; 32-graphite filler; 33-a bearing; 41-a first annular step; 42-a second annular step; 43-a first seal; 44-a second seal; 5-valve stem nut; 6-locking the plate; 7-a handle; 8-disc spring; 9-positioning plate; 10-valve cover.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a sealing structure, as shown in fig. 1 to 3, which comprises a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are both in a closed ring shape and are made of anti-corrosion materials; the closed ring is suitable for being sleeved on a component to be sealed, the first sealing element and the second sealing element are arranged in a stacked mode, and the abutting positions of the first sealing element and the second sealing element are matched through a slope surface, as shown in figure 2; the first seal and the second seal may be deformed by a pressing force in an axial direction of the closure ring.
For example, the corrosion-resistant material is plastic or rubber, wherein the plastic is preferably polytetrafluoroethylene material or other corrosion-resistant plastic material. The slope surface of the mutual matching position of the first sealing element and the second sealing element is a smooth surface. That is, the surface of the first seal facing the second seal is a smooth inclined surface, and the surface of the second seal facing the first seal is a smooth inclined surface, both inclined surfaces being able to abut.
Most preferably, the first and second sealing members are each in the form of a ring-shaped plate, as shown in fig. 2, and both the first and second sealing members have a trapezoidal longitudinal cross-section, most preferably, a right-angled trapezoidal longitudinal cross-section, wherein the short and long sides of the right-angled trapezoidal longitudinal cross-section are parallel to each other in the axial direction of the closed ring, and the sloping side of the trapezoidal longitudinal cross-section is the sloping side.
In this embodiment, taking as an example that the sealing structure is used to seal the region between the valve stem 2 and the valve body 1, as shown in fig. 1, the first seal and the second seal are fitted side by side on the outer peripheral wall of the valve stem 2; when the valve rod 2 is assembled with the valve body 1, the first sealing element and the second sealing element are subjected to extrusion force (mentioned below) along the axial direction of the closed ring, and due to the slope surface matching mode of the first sealing element and the second sealing element, the first sealing element and the second sealing element are mutually extruded and deformed along the slope surface, the deformation has components along the axial direction and the radial direction of the closed ring, so that the first sealing element and the second sealing element can realize bidirectional sealing on the area between the valve rod 2 and the valve body 1 in the radial direction and the axial direction of the closed ring, namely, bidirectional sealing is realized in the axial direction and the radial direction of the valve rod 2, and the sealing performance of the sealing structure is improved. Meanwhile, the two sealing elements are made of anti-corrosion materials, so that the sealing device can be used under the working condition of corrosive media.
As an alternative to the above embodiment, the slope may also be a surface that is not smooth, for example, the surface may be roughened to increase the friction between the first sealing element and the second sealing element, thereby enhancing the abutting force at the abutting position and the firmness of the fit. Or the surface of the first sealing element facing the second sealing element is a smooth inclined surface, and the surface of the second sealing element facing the first sealing element is a rough inclined surface, or the inclined surface of the first sealing element is a rough surface and the inclined surface of the second sealing element is a smooth surface.
As an alternative to the above described embodiments, the longitudinal cross-sectional shape of the first and second seals may not be trapezoidal, for example may be parallelogram. Or other shapes, the mutual abutting positions of the first sealing element and the second sealing element are matched through a slope; the first sealing element and the second sealing element can deform under the action of the extrusion force along the axial direction of the closed ring, so that the sealing structure can have deformation components in the axial direction and the radial direction of the closed ring, and bidirectional sealing can be realized.
Example 2
The present embodiment provides a sealing device for a valve, as shown in fig. 1 and 2, comprising a first sealing structure 3 and a second sealing structure; the second sealing structure and the first sealing structure 3 are arranged side by side and are arranged between the first part to be sealed and the second part to be sealed in a sealing manner; the second sealing structure is closer to one side of the valve cavity of the valve body 1 than the first sealing structure 3; the second seal structure is the seal structure provided in any one of embodiment 1; the first part to be sealed is the valve rod 2 or the valve cover 10, and the second part to be sealed is the valve body 1.
For example, taking the sealing between the valve rod 2 and the valve body 1 as an example, the first sealing structure 3 between the valve rod 2 and the valve body 1 adopts a graphite packing assembly, and in order to facilitate the installation of the first sealing structure 3 and the second sealing structure, as shown in fig. 2, a first groove and a second groove are arranged side by side at the mutually matched positions of the valve rod and the valve body; the second groove is closer to one side of the valve cavity of the valve body 1 than the first groove, and the first sealing structure 3 and the second sealing structure are respectively arranged in the first groove and the second groove.
For example, as shown in fig. 3, the outer peripheral wall of the valve rod 2 is provided with a first annular step 41, correspondingly, the inner peripheral wall of the valve body 1 is provided with a second annular step 42, and the step surfaces of the first annular step and the second annular step are opposite to each other to form a second groove; however, as for the first groove, a second groove may be formed, or only the inner wall surface of the valve body 1 may be provided with a second annular step, and an annular groove or an annular groove with an upward opening is formed between the second annular step and the valve rod 2.
As shown in fig. 2, the graphite packing assembly includes a pressing sleeve 31, a graphite packing 32 and a bearing 33, wherein the pressing sleeve 31 and the bearing 33 are sleeved on the valve rod 2, the top surface of the bearing 33 is preferably flush with the step surface of the second annular step on the valve body 1, the top of the pressing sleeve 31 can extend out of the first groove, and the graphite packing 32 is disposed in the area formed between the pressing sleeve 31 and the bearing 33, the outer wall of the valve rod 2 and the inner wall of the valve body 1, thereby realizing the installation of the first sealing structure 3 in the first groove.
As shown in fig. 2, the first seal and the second seal in the second sealing structure are directly compressed in the second groove, and the portion between the step surfaces of the two second annular steps of the valve body 1 forms an annular protrusion 11 extending radially inward along the valve stem 2; the bottom of the bearing 33 has a radial extension which is inserted between the top of the first annular step and the bottom of the annular projection.
In addition, still overlap in proper order on the valve rod 2 and be equipped with pretension spring, locating plate 9, valve-stem nut 5 and handle 7, wherein pretension spring and pressure cover 31 are adjacent and the butt setting, and locating plate 9 passes through the fastener to be fixed on valve body 1. Optionally, the pre-tensioned spring is a disc spring 8.
After sleeving the first sealing structure 3 and the second sealing structure on the valve rod 2, because of the thread fit between the valve rod nut 5 and the valve rod 2, a screw rod structure is formed, when the valve rod nut 5 is rotated, the valve rod 2 is lifted in fig. 1, for the second sealing structure, the first annular step on the valve rod 2 continuously extrudes the first sealing element and the second sealing element upwards, and the bearing 33 is driven to extrude the graphite packing 32, and then the pre-tightening spring is continuously extruded through the pressing sleeve 31, the pre-tightening spring applies pre-tightening force towards the direction of the graphite packing 32 to the pressing sleeve 31, and then the graphite packing 32 is extruded compactly, so that the first sealing between the valve rod 2 and the valve body 1 is realized. Meanwhile, the pretightening force also applies extrusion force to the first sealing element and the second sealing element in the second sealing structure, so that the first sealing element and the second sealing element are extruded and deformed in the axial direction and the radial direction of the valve rod 2, and sealing is realized.
Of course, as shown in fig. 1, a locking plate 6 may be further disposed between the stem nut 5 and the positioning plate 9, the locking plate 6 is sleeved on the valve stem 2, an inner hole of the locking plate 6 is a long waist hole, two flat surfaces are correspondingly disposed on the valve stem 2, the two flat surfaces are just matched with two flat inner walls of the long waist hole, when the stem nut 5 and the valve stem 2 are locked in place, one end of the locking plate 6 is bent upward after the first sealing structure 3 and the second sealing structure are squeezed in place, the bent portion is fixed on the stem nut 5 by a fastener, so as to lock the stem nut 5 and the valve stem 2, no relative movement is generated between the two, so as to ensure that the pretension spring always keeps a pretension force, the two sealing structures are both in a sealing state, so as to ensure the sealing performance between the valve stem 2 and the valve body 1, and finally, the valve stem is driven by the, to open or close the valve. For example, the valve core is a valve ball.
Similarly, as shown in fig. 2 and 3, a second sealing structure between the bonnet 10 and the valve stem 2 is provided in the same manner as the above-described second sealing structure, with a first annular step provided on the bonnet 10 and a second annular step provided on the valve body 1. For the first sealing structure 3 between the valve cover 10 and the valve rod 2, the graphite packing component can be adopted, and the arrangement mode is the same as that of the structure; or, as shown in fig. 2 and 3, the first annular step is provided on the valve cover 10, the second annular step is provided on the valve body 1, the graphite packing 32 is replaced by a graphite gasket, or the graphite gasket is wound on the valve cover 10, the valve cover 10 and the valve body 1 are fixedly connected by a fastener, and after the valve cover 10 and the valve body 1 are installed in place, the first sealing structure 3 and the second sealing structure are both in a squeezed sealing state. In addition, graphite is used as a sealing element, and the graphite can play a role in sealing and fire prevention.
In this embodiment, under the working condition of corrosive media, the second sealing structure adopts any one of the sealing structures provided in the above embodiment 1, so that on one hand, the second sealing structure has corrosion resistance, and on the other hand, the second sealing structure can seal between the valve rod and the valve body in the radial direction and the axial direction of the valve rod, or seal between the valve cover and the valve body, so that the sealing property of the second sealing structure is improved; meanwhile, the second sealing structure is closer to the valve cavity, so that the first sealing structure is protected, the first sealing structure is prevented from being corroded or polluted by a corrosive medium, the sealing performance of the whole sealing device is improved, and the reliability of the sealing structure is improved.
Alternatively, for the convenience of processing, as shown in fig. 2 and 3, the first grooves and the second grooves at the mating part of the bonnet 10 and the valve body 1 are stepped.
As a variation of the above embodiment, the first sealing structure 3 may also be another structure, such as a sealing ring, or a stopper ring, or any other existing sealing structure. As a modified embodiment, the first sealing structure may also be the sealing structure provided in example 1.
As a modification of the above embodiment, the first groove and the second groove may be provided separately on the valve stem 2 or on the valve body 1 as a sealing structure between the valve stem 2 and the valve body 1; similarly, for the sealing structure between the valve cover 10 and the valve body 1, the first groove and the second groove may also be separately provided on the valve cover 10, or on the valve body 1, at this time, the above-mentioned pressing plate, pre-tightening spring, stem nut 5, pressing sleeve 31, locking plate 6, etc. may not be provided, and only the sealing structure needs to be in interference fit in the respective groove.
Example 3
This embodiment provides a valve, as shown in FIG. 1, which is a floating ball valve comprising
The valve body 1 is provided with a valve cavity and an installation cavity, wherein two ends of the installation cavity are respectively communicated with the outside and the middle part of the valve cavity; openings at two ends of the valve cavity are respectively used as an inflow port and an outflow port;
one end of the valve rod 2 penetrates through the mounting cavity and extends into the valve cavity;
a valve cover 10 provided on the outflow port;
two or more sets of sealing means for a valve according to any one of embodiments 2 are provided, wherein one set of sealing means is provided around between the inner wall surface of the mounting chamber and the portion of the valve stem 2 extending into the mounting chamber, and one set of sealing means is provided around between the inner wall surface of the outflow port and the portion of the bonnet 10 extending into the outflow port.
Of course, the valve may be other valves besides a floating ball valve, such as a butterfly valve, a stop valve, etc.
The valve of this embodiment, owing to adopt the sealing device in embodiment 2, seal between valve rod 2 and the valve body 1, and between valve gap 10 and the valve body 1 to when making the ball valve use in the corrosive medium, have corrosion resistance, realize the radial and axial two-way seal at valve rod 2 when forming multichannel sealed between valve rod 2 and the valve body 1, and between valve gap 10 and the valve body 1, improve this ball valve's performance, prolong the life of ball valve.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. A seal structure, characterized by comprising
The first sealing element (43) and the second sealing element (44) are closed rings and made of anti-corrosion materials; the closed ring is suitable for being sleeved on a component to be sealed, the first sealing element (43) and the second sealing element (44) are arranged in a stacked mode, and the first sealing element (43) and the second sealing element (44) are matched through a slope surface where the first sealing element and the second sealing element abut against each other;
the first seal (43) and the second seal (44) are deformable under a pressing force in the axial direction of the closed ring.
2. The seal structure of claim 1, wherein the ramp is a smooth surface.
3. The sealing arrangement according to claim 2, characterised in that the longitudinal cross-sectional shape of the first sealing element (43) and/or the second sealing element (44) is a trapezoid, one sloping side of which is the ramp, and the short and long sides of which are parallel in the axial direction of the closed ring.
4. A sealing arrangement according to any of claims 1-3, characterised in that the anti-corrosion material is plastic or rubber.
5. A seal assembly for a valve comprising
A first sealing structure;
the second sealing structure is arranged in parallel with the first sealing structure and is arranged between the first part to be sealed and the second part to be sealed in a sealing manner;
the second sealing structure is closer to one side of the valve cavity of the valve body (1) than the first sealing structure;
the second seal structure is the seal structure of any one of claims 1-4;
the first part to be sealed is a valve rod (2) or a valve cover (10), and the second part to be sealed is a valve body (1).
6. The sealing device for the valve according to claim 5, wherein a first groove and a second groove are arranged side by side at the position where the first member to be sealed and the second member to be sealed are engaged with each other;
the second groove is closer to one side of the valve cavity of the valve body (1) than the first groove, and the first sealing structure and the second sealing structure are respectively and tightly arranged in the first groove and the second groove.
7. The sealing arrangement for a valve according to claim 6, characterized in that the outer peripheral wall of the first part to be sealed is provided with a first annular step (41), the inner peripheral wall of the second part to be sealed is provided with a second annular step (42), and the steps of the first annular step (41) and the second annular step (42) face each other to form the first groove or the second groove.
8. Sealing arrangement for a valve according to claim 6 or 7, characterized in that the first groove and the second groove are stepped when the first component to be sealed is a valve cover (10).
9. A valve is characterized by comprising
The valve body (1) is provided with a valve cavity and an installation cavity, wherein two ends of the installation cavity are respectively communicated with the outside and the middle of the valve cavity; openings at two ends of the valve cavity are respectively used as an inflow port and an outflow port;
one end of the valve rod (2) penetrates through the mounting cavity and extends into the valve cavity;
a valve cover (10) arranged on the outflow port;
at least two sets of sealing means for a valve according to any one of claims 5 to 8, wherein one set of sealing means is provided around the inner wall of the mounting chamber and the part of the valve stem (2) extending into the mounting chamber, and one set of sealing means is provided around the inner wall of the outflow opening and the part of the valve cover (10) extending into the outflow opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020594998.3U CN212004366U (en) | 2020-04-17 | 2020-04-17 | Sealing structure, sealing device for valve and valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020594998.3U CN212004366U (en) | 2020-04-17 | 2020-04-17 | Sealing structure, sealing device for valve and valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212004366U true CN212004366U (en) | 2020-11-24 |
Family
ID=73415320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020594998.3U Active CN212004366U (en) | 2020-04-17 | 2020-04-17 | Sealing structure, sealing device for valve and valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212004366U (en) |
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2020
- 2020-04-17 CN CN202020594998.3U patent/CN212004366U/en active Active
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