CN214889010U - Crystallization-proof structure of metal hard sealing valve seat - Google Patents
Crystallization-proof structure of metal hard sealing valve seat Download PDFInfo
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- CN214889010U CN214889010U CN202120792490.9U CN202120792490U CN214889010U CN 214889010 U CN214889010 U CN 214889010U CN 202120792490 U CN202120792490 U CN 202120792490U CN 214889010 U CN214889010 U CN 214889010U
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- valve seat
- crystallization
- metal hard
- valve
- sealing
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Abstract
The utility model relates to a crystallization structure is prevented to metal hard seal valve seat, including valve body and the spheroid of setting in the valve body, still processed the step hole in the valve body, the downthehole slidable disk seat circle that is provided with of step, disk seat circle keep away from spheroidal one side and be provided with the pretension subassembly, and disk seat circle is close to spheroidal one side and is provided with scraper portion, and spheroidal sphere is hugged closely all the time to scraper portion under the effect of pretension subassembly. In the crystallization-preventing structure of the metal hard sealing valve seat, the convex scraper structure of the valve can clean the sealing surface in the opening and closing process, so that the sealing performance of the valve seat and the ball body is ensured, and the service life of the valve is prolonged; the method is suitable for special working conditions that the medium is easy to crystallize or the magazine particles are more.
Description
Technical Field
The utility model relates to a ball valve technical field, in particular to crystallization structure is prevented to metal hard seal valve seat.
Background
The sealing cooperation between the ball and the valve seat, which is the most important sealing component in the valve, affects the sealing performance of the whole valve, and under the working condition, the medium is easy to crystallize or deposit, and impurities or tiny solid particles in the medium are easy to enter the sealing surface to cause crystallization, thereby affecting the dynamic sealing performance of the valve seat.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: in order to overcome the defects of the prior art, the anti-crystallization structure of the metal hard sealing valve seat is provided.
In order to achieve the above technical effect, the utility model discloses a technical scheme is: the utility model provides a crystallization structure is prevented to metal hard seal disk seat, includes the valve body and sets up the spheroid in the valve body, still process the step hole in the valve body, the downthehole slidable disk seat circle that is provided with of step, be provided with sealing filler between disk seat circle and the valve body, disk seat circle keeps away from spheroidal one side and is provided with the pretension subassembly, and disk seat circle is close to spheroidal one side and is provided with scraper portion, scraper portion hugs closely spheroidal sphere all the time under the effect of pretension subassembly.
Further, the valve seat ring part extends back to the direction of the ball body and forms a packing groove for placing sealing packing with the step hole.
Preferably, the sealing filler is a wedge-shaped graphite filler.
Preferably, the pretension assembly comprises a pressing ring and an elastic piece, the pressing ring is located on one side, away from the ball body, of the valve seat ring, and the elastic piece is located on one side, away from the valve seat ring, of the pressing ring.
Preferably, one surface of the pressing ring, which is attached to the elastic piece, is provided with a flower-shaped groove, and the groove is communicated with the medium flow channel of the valve body.
Preferably, the elastic member is a disc spring.
Preferably, the scraper part and the valve seat ring are integrally formed by wear-resistant hard alloy.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the convex scraper structure of the valve can clean the sealing surface in the opening and closing process, so that the sealing performance of the valve seat and the ball body is ensured, and the service life of the valve is prolonged;
2. the valve seat structure can be suitable for special working conditions that the medium is easy to crystallize or the magazine particles are more.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of the crystallization-preventing structure of the metal hard seal valve seat of the present invention.
The reference numbers and corresponding designations in the drawings are: 1. the valve comprises a valve body, 2 parts of a ball body, 3 parts of a valve seat ring, 4 parts of sealing filler, 5 parts of a pressing ring, 6 parts of an elastic piece, 31 parts of a scraper part and 51 parts of a groove.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the present application provides a crystallization-preventing structure for a metal hard sealing valve seat, including a valve body 1 and a ball 2 disposed in the valve body 1, a step hole is further processed in the valve body 1, a slidable valve seat ring 3 is disposed in the step hole, a sealing filler 4 is disposed between the valve seat ring 3 and the valve body 1, one side of the valve seat ring 3 away from the ball 2 is provided with a pre-tightening component, one side of the valve seat ring 3 close to the ball 2 is provided with a scraper portion 31, in order to ensure the connection strength and the service life of the scraper portion 31 and the valve seat ring 3, the scraper portion 31 and the valve seat ring 3 are integrally formed by wear-resistant hard alloy, and the scraper portion 31 is tightly attached to the ball surface of the ball 2 all the time under the effect of the pre-tightening component.
The convex scraper part 31 is designed on the valve seat ring 3 in the embodiment, and the purpose is to play a role in cleaning, when a cavity medium is an easily crystallized medium or an easily deposited and attached medium, the convex scraper part 31 can play a role in scraping the sealing surface of the ball body 2 in the opening and closing process, so that the sealing surface is kept smooth, the sealing effect of the sealing pair of the valve seat ring 3 and the ball body 2 is ensured, and the leakage problem is prevented.
On the basis of the above-mentioned embodiment, the seat ring 3 extends partially away from the ball 2 and forms a packing groove with a stepped hole for placing the packing 4.
Under the condition that the valve seat ring 3 and the valve body 1 are in sealing failure, the sealing filler 4 can play a sealing role, so that medium leakage is prevented, and the use reliability is improved.
Preferably, the sealing packing 4 is a wedge-shaped graphite packing. The graphite packing can bear violent alternation of temperature and pressure, has excellent sealing performance, can be used for a long time, has good elasticity due to the shape of the wedge, and can adapt to pressure difference change.
Preferably, the pre-tightening assembly comprises a pressing ring 5 and an elastic piece 6, wherein the pressing ring 5 is positioned on one side of the valve seat ring 3 away from the ball body 2, and the elastic piece 6 is positioned on one side of the pressing ring 5 away from the valve seat ring 3.
The clamping ring 5 can be used for tightly propping against the valve seat ring 3 or the sealing filler 4, and the elastic piece 6 provides pretightening force to ensure that the valve seat ring 3 is tightly close to the ball body 2.
Furthermore, a flower-shaped groove 51 is provided on the surface of the pressure ring 5 abutting against the elastic element 6, and the groove 51 is communicated with the medium flow passage of the valve body 1.
The design of the groove 51 can discharge impurities along the medium flow channel, thereby avoiding the elastic part 6 from being stuck by medium deposition containing particle impurities and ensuring the normal use of the elastic part 6.
Wherein, elastic component 6 is the dish spring, and the dish spring can bear very big load, and is fit for the assembly and the use in downthehole narrow and small space of step.
The present invention is not limited to the above specific embodiments, and for those skilled in the art, the above conception can be used without any creative work, and all the changes made fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a crystallization structure is prevented to metal hard seal disk seat, includes valve body (1) and spheroid (2) of setting in valve body (1), its characterized in that, the step hole has still been processed in valve body (1), the downthehole slidable disk seat circle (3) that is provided with of step, be provided with between disk seat circle (3) and valve body (1) sealing filler (4), one side that spheroid (2) were kept away from in disk seat circle (3) is provided with the pretension subassembly, and one side that disk seat circle (3) are close to spheroid (2) is provided with scraper portion (31), scraper portion (31) hug closely the sphere of spheroid (2) all the time under the effect of pretension subassembly.
2. The crystallization-preventing structure of the metal hard sealing valve seat is characterized in that the valve seat ring (3) partially extends in the direction opposite to the ball body (2) and forms a packing groove for placing a sealing packing (4) with a stepped hole.
3. The metal hard seal valve seat crystallization prevention structure according to claim 2, characterized in that the seal packing (4) is a wedge-shaped graphite packing.
4. The metal hard seal valve seat anti-crystallization structure according to claim 1 or 2, wherein the pre-tightening assembly comprises a pressing ring (5) and an elastic member (6), the pressing ring (5) is located on one side of the valve seat ring (3) away from the sphere (2), and the elastic member (6) is located on one side of the pressing ring (5) away from the valve seat ring (3).
5. The crystallization-preventing structure of the metal hard sealing valve seat is characterized in that one surface, close to the elastic piece (6), of the pressing ring (5) is provided with a flower-shaped groove (51), and the groove (51) is communicated with a medium flow channel of the valve body (1).
6. The crystallization-preventing structure of a metal hard sealing valve seat as claimed in claim 4, wherein the elastic member (6) is a disc spring.
7. The crystallization-preventing structure of a metal hard sealing valve seat according to claim 1, wherein the scraper portion (31) and the valve seat ring (3) are integrally formed of wear-resistant cemented carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120792490.9U CN214889010U (en) | 2021-04-19 | 2021-04-19 | Crystallization-proof structure of metal hard sealing valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120792490.9U CN214889010U (en) | 2021-04-19 | 2021-04-19 | Crystallization-proof structure of metal hard sealing valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214889010U true CN214889010U (en) | 2021-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120792490.9U Active CN214889010U (en) | 2021-04-19 | 2021-04-19 | Crystallization-proof structure of metal hard sealing valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214889010U (en) |
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2021
- 2021-04-19 CN CN202120792490.9U patent/CN214889010U/en active Active
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