CN216242427U - Composite sealing ball valve - Google Patents
Composite sealing ball valve Download PDFInfo
- Publication number
- CN216242427U CN216242427U CN202122166127.9U CN202122166127U CN216242427U CN 216242427 U CN216242427 U CN 216242427U CN 202122166127 U CN202122166127 U CN 202122166127U CN 216242427 U CN216242427 U CN 216242427U
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- Prior art keywords
- valve
- valve seat
- valve body
- shaft hole
- ball
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- 238000007789 sealing Methods 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 20
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims 4
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a composite sealing ball valve, wherein a wear-resistant gasket is arranged on a valve rod step, a composite valve seat is arranged on a valve seat mounting platform of a valve body with a half shaft hole, the valve rod is arranged in the shaft hole of the valve body with the half shaft hole, a ball body is fixedly connected with the valve rod and arranged in an inner cavity of the valve body with the half shaft hole, a composite valve seat is arranged on the valve seat mounting platform of the other half valve body, and sealing filler is arranged in a sealing box of the valve body and is pressed tightly through a sealing filler cover plate. The utility model has simple and novel structure and convenient use; the valve seat with the composite seal has the advantages that the wear resistance of the valve seat is increased, the service life is prolonged, and when the wear-resistant PTFE valve seat is worn or damaged, the metal material of the valve seat can contact with the ball body due to the special structure of the valve seat, so that the secondary seal effect is realized.
Description
Technical Field
The utility model relates to the field of ball valves, in particular to a composite sealing ball valve.
Background
The ball valve has the advantages of simple structure, good sealing performance, small volume in a certain nominal diameter range, light weight, low material consumption, small installation size, small driving moment, simple and convenient operation and easy realization of quick opening and closing, and is one of valve varieties which are developed quickly in recent decades. The ball valve has wide application, the variety and the number of the ball valve are still continuously expanded, the ball valve is developed towards high temperature, high pressure, large diameter, high sealing performance, long service life, excellent adjusting performance and multifunction of the valve, the reliability and other performance indexes of the ball valve reach higher levels, and the ball valve partially replaces a gate valve, a stop valve and a throttle valve.
The sealing form of the ball valve is divided into soft sealing and hard sealing, the sealing effect of the soft sealing is good, but larger potential safety hazard exists for inflammable and explosive medium leakage; the hard seal can be used in a severe environment, but the sealing effect is not good, the requirements on the sealing and the safety of pipelines of media such as petroleum, gas and the like are high, and a high-performance, safe and reliable ball valve is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a composite sealing ball valve which overcomes the defects of a soft sealing structure and a hard sealing structure, has a good sealing effect, and is safe and reliable.
In order to achieve the above purpose, the present invention proposes the following technical solutions: a composite sealing ball valve comprises a valve body, wherein the valve body is in a two-half type and is fixed together through a stud and a nut to form a whole, a valve seat mounting platform is arranged on one half of the valve body and used for mounting a valve seat, a shaft hole for mounting a valve rod is arranged for mounting the valve rod, a packing box for mounting sealing packing is arranged for mounting packing and a sealing packing cover plate, an axial limiting platform for the valve rod is arranged for axial limiting of the valve seat, and the valve seat mounting platform is arranged on the other half of the valve body and used for mounting the valve seat; the ball body is a sealing element, the two sides of the ball body are cut off at equal intervals, the center of the ball body is hollow, and one end of the ball body is provided with a notch connected with the valve rod; the valve rod is step-shaped, one end of the valve rod is provided with a step for axial limiting of the valve rod, and the other end of the valve rod is provided with a shape connected with the actuator; the composite valve seat is a composite valve seat, one part of the composite valve seat is a metal elastic valve seat, the other part of the composite valve seat is a wear-resistant PTFE valve seat, the wear-resistant PTFE valve seat is embedded in the metal elastic valve seat, the wear-resistant PTFE valve seat is firstly contacted with the ball body when the valve is completely closed, and a small gap is reserved between the metal elastic valve seat and the ball body.
Preferably, the wear-resisting gasket is installed on the valve rod step, a composite valve seat is arranged on a valve seat mounting platform with half of the shaft hole of the valve body, the valve rod is arranged in the shaft hole with half of the shaft hole of the valve body, the ball body is fixedly connected with the valve rod, an inner cavity with half of the shaft hole of the valve body is arranged, a composite valve seat is arranged on a valve seat mounting platform with the other half of the valve body, the two halves of the valve body are locked together through a stud and a nut, sealing filler is arranged in a sealing box of the valve body and is compressed through a sealing filler cover plate, the sealing filler cover plate and the valve body are connected together through an inner hexagon bolt, and the clamping ring is arranged on the valve rod and is in contact with the sealing filler cover plate.
The utility model has the advantages that: the structure is simple and novel, and the use is convenient; the valve seat with the composite seal has the advantages that the wear resistance of the valve seat is increased, the service life is prolonged, and when the wear-resistant PTFE valve seat is worn or damaged, the metal material of the valve seat can contact with the ball body due to the special structure of the valve seat, so that the secondary seal effect is realized.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The sequence number names in the figure: the valve comprises a valve body 1, a valve body 2, a composite valve seat 3, a ball 4, a sealing gasket 5, a stud 6, a nut 7, a sealing filler 8, a valve rod 9, a sealing filler cover plate 10, a clamping ring 11, an inner hexagon nut 12 and a wear-resistant gasket.
Detailed Description
In order to make the purpose and technical solution of the present invention more clearly understood, the present invention is further described with reference to the accompanying drawings.
As shown in fig. 1, a composite sealing's ball valve, including valve body 1, spheroid 3, composite valve seat 2, valve rod 8, sealing filler 7, sealing filler apron 9 etc, wear-resisting gasket 12 install on the valve rod step, valve body 1 has and is equipped with composite valve seat 2 on the half disk seat mounting platform in shaft hole, valve rod 8 set up in valve body 1 has the half shaft hole in shaft hole, the connection fluting of spheroid 3 be connected fixedly together with valve rod 8, set up in valve body 1 has the half inner chamber in shaft hole, be equipped with composite valve seat 2 on the disk seat mounting platform of half valve body 1, the valve body 1 of two halves is together through stud 5 and nut 6 locking, the wear-resisting tetrafluoro valve seat of composite valve seat 2 and spheroid 3 this moment contacts completely.
Further, set up sealing filler 7 in the sealed box of valve body 1, compress tightly through sealing filler apron 9, can guarantee valve rod 8 department leakproofness effectively, hexagon socket head cap screw 11 links together sealing filler apron 9 and valve body 1, and rand 10 sets up on valve rod 8, and 9 contacts with sealing filler apron, and the axial that the valve had been guaranteed to the step of rand 10 that sets up cooperation valve rod 8 is spacing.
It is further explained that when the valve is fully closed, the ball 3 is in full contact with the wear-resistant PTFE valve seat of the composite valve seat 2, and the ball 3 is not in contact with the metal elastic valve seat of the composite valve seat 2, so that a certain amount of clearance is left.
Finally, it should be noted that the above examples are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (2)
1. The utility model provides a compound seal's ball valve, includes valve body (1), spheroid (3), compound disk seat (2), valve rod (8), sealing filler (7), sealing filler apron (9), its characterized in that: wear-resisting gasket (12) are installed on the valve rod step, valve body (1) is equipped with compound disk seat (2) on having the disk seat mounting platform of half of shaft hole, valve rod (8) set up in valve body (1) have the shaft hole of half of shaft hole, spheroid (3) are connected fixedly together with valve rod (8), set up in valve body (1) have the inner chamber of half of shaft hole, be equipped with compound disk seat (2) on the disk seat mounting platform of second half valve body (1), valve body (1) of two halves is in the same place through stud (5) and nut (6) locking, set up sealing filler (7) in the sealed box of valve body (1), compress tightly through sealing filler apron (9), interior hexagon bolt (11) will seal filler apron (9) and valve body (1) link together, rand (10) set up on valve rod (8), contact with sealing filler apron (9).
2. A compound-sealed ball valve as defined in claim 1, wherein: the ball body (3) is in complete contact with the wear-resistant PTFE valve seat of the composite valve seat (2), the ball body (3) is not in contact with the metal elastic valve seat of the composite valve seat (2), and a certain amount of clearance is reserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122166127.9U CN216242427U (en) | 2021-09-08 | 2021-09-08 | Composite sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122166127.9U CN216242427U (en) | 2021-09-08 | 2021-09-08 | Composite sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242427U true CN216242427U (en) | 2022-04-08 |
Family
ID=80983761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122166127.9U Active CN216242427U (en) | 2021-09-08 | 2021-09-08 | Composite sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773383A (en) * | 2021-09-08 | 2023-03-10 | 山西好利阀机械制造有限公司 | A composite sealed ball valve |
-
2021
- 2021-09-08 CN CN202122166127.9U patent/CN216242427U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773383A (en) * | 2021-09-08 | 2023-03-10 | 山西好利阀机械制造有限公司 | A composite sealed ball valve |
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| GR01 | Patent grant |