CN209743658U - Novel upper assembling type low-temperature ball valve - Google Patents
Novel upper assembling type low-temperature ball valve Download PDFInfo
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- CN209743658U CN209743658U CN201920251141.9U CN201920251141U CN209743658U CN 209743658 U CN209743658 U CN 209743658U CN 201920251141 U CN201920251141 U CN 201920251141U CN 209743658 U CN209743658 U CN 209743658U
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Abstract
The utility model relates to a novel upper-mounted low-temperature ball valve, which comprises a valve body, a valve seat, a ball body and a valve cover, wherein the valve body is of an integrated structure, the ball body and the valve seat adopt the upper-mounted structure, the valve seat adopts a floating valve seat, the floating valve seat comprises a sealing seat, a pressing ring, a spring seat and a Lip-Seal sealing ring, and the valve seat adopts a DIB-2 structure; the valve is characterized in that two ends of the Lip-Seal Lip-shaped sealing ring are pressed between the third radial end face of the spring seat and the second radial step of the inner wall of the valve channel; an axial retreating gap is formed between the first radial end face of the spring seat and the radial end face of the sealing seat. The wear of the Lip-Seal Lip Seal ring caused by axial sliding is avoided, and the sealing reliability is improved.
Description
Technical Field
The utility model belongs to the valve field especially relates to a facial make-up formula ball valve. The utility model discloses specially adapted low temperature operating mode.
Background
The structure of the upper-mounted low-temperature ball valve comprises a valve body, a valve seat, a ball body, a valve cover and a valve rod, wherein the valve body is of an integrated structure, the ball body and the valve seat are mounted in a valve cavity from a middle cavity of the valve body, and the valve seat is of a floating structure. At present, Lip-Seal Lip-shaped sealing rings are commonly adopted between valve seats and valve bodies of top-mounted low-temperature ball valves at home and abroad, and in order to avoid scraping and damaging the valve seats and the sealing surfaces of the ball bodies in the installation process, larger axial retreating gaps are needed between the valve seats and the valve bodies. Axial retreating gaps of the existing product are all arranged in an installation cavity of the Lip-Seal Lip-shaped sealing ring, so that the Lip-Seal Lip-shaped sealing ring axially slides in the installation cavity under the action of medium pressure, and particularly, a bidirectional Lip-Seal Lip-shaped sealing ring adopted by a valve seat on the outlet side of a valve body is pushed by the medium pressure to slide back and forth, so that the wear of the Lip-Seal Lip-shaped sealing ring is caused, and the sealing performance is influenced.
Disclosure of Invention
The utility model aims at the shortcoming that prior art exists, provide a novel facial make-up formula low temperature ball valve that sealing performance is good.
The technical scheme of the utility model includes valve body, valve seat, spheroid, valve gap, its valve body is a body structure, spheroid, valve seat adopt the facial make-up structure, and the valve seat adopts floating valve seat, floating valve seat includes Seal receptacle, clamping ring, spring holder, Lip-Seal Lip-type sealing washer, and Lip-Seal Lip-type sealing washer is installed between the outer disc in the Seal receptacle radial direction and the inner circular wall of valve body passageway, and the valve seat adopts DIB-2 structure, and the clamping ring is installed on the external screw thread of the excircle on one side of the Seal receptacle Seal face by the internal thread, and a radial terminal surface of clamping ring is supported with the first radial terminal surface of spring holder and is touched, is equipped with the spring chamber between the second radial terminal surface of spring holder and the first radial step of valve body passageway inner wall; the valve is characterized in that two ends of the Lip-Seal Lip-shaped sealing ring are pressed between the third radial end face of the spring seat and the second radial step of the inner wall of the valve channel; an axial retreating gap is formed between the first radial end face of the spring seat and the radial end face of the sealing seat.
Preferably, sealing rings are respectively arranged between the inner hole wall of the spring seat and the outer circular surface of the sealing seat and between the outer circular surface of the spring seat and the inner wall of the valve body channel.
The utility model has the advantages that the axial retreating gap is arranged between the first radial end face of the spring seat and the radial end face of the sealing seat, when the sealing seat is installed, the pressing ring is firstly retreated to one side of the sealing face of the sealing seat, after the sealing seat and the ball are installed into the valve body channel, the pressing ring is pressed to the spring seat, the sealing face of the sealing seat is pressed with the ball sealing face, and the abrasion of the sealing face of the valve seat and the sealing face of the ball in the installation process is avoided; two ends of the Lip-Seal Lip-shaped sealing ring are pressed between the third radial end face of the spring seat and the second radial step of the inner wall of the valve body channel, so that abrasion of the Lip-Seal Lip-shaped sealing ring due to axial sliding is avoided, and the sealing performance is improved.
Drawings
Fig. 1 is a schematic view of the outlet-side valve seat mounting structure of the present invention.
Fig. 2 is a schematic view of the inlet-side valve seat mounting structure of the present invention.
Detailed Description
The novel upper-mounted low-temperature ball valve shown in fig. 1 and 2 comprises a valve body 7, a valve seat, a ball body 1 and a valve cover, wherein the valve body 7 is of an integral structure, the valve seat is mounted in an inlet and outlet channel of the valve body 7, the valve cover is mounted in a middle cavity of the valve body 7, the ball body 1 and the valve seat are of an upper-mounted structure, namely the ball body 1 and the valve seat are mounted in an inner cavity of the valve body 7 from the middle cavity, the valve seat is a floating valve seat, the floating valve seat comprises a sealing seat 2, a pressing ring 3, a spring seat 4 and a Lip-Seal 6, the Lip-Seal 6 is mounted between the radial outer circular surface of the sealing seat 2 and the inner circular wall of the channel of the valve body 7, the valve seat is of a DIB-2 structure, namely a single-piston effect valve seat is used for an upstream inlet, a double-piston effect valve. The clamp ring 3 is installed on the external screw thread of the excircle of the sealing surface one side of the seal seat 2 by the internal screw thread, a radial end face of the clamp ring 3 is in top contact with a first radial end face of the spring seat 4, during installation, the clamp ring 3 is adjusted to the end face of the sealing surface one side of the seal seat 2 at first, after the seal seat 2 and the ball body 1 are installed, the clamp ring 3 is adjusted towards the spring seat 4, the clamp ring is tightly pressed with the first radial end face of the spring seat 4, and the seal surface of the seal seat 2 is in compression fit with the ball body 1. A spring cavity is arranged between the second radial end face of the spring seat 4 and the first radial step on the inner wall of the channel of the valve body 7, a spring 8 is arranged in the spring cavity, the outer circular surface of the spring seat 4 is in dynamic sealing fit with the inner circular surface of the valve body 7, the inner circular surface of the spring seat 4 is in dynamic sealing fit with the outer circular surface of the sealing seat 2, so that the sealing seat 2, the pressing ring 3 and the spring seat 4 form a floating valve seat, the floating valve seat axially floats in the channel of the valve body 7, the expansion caused by temperature change is compensated, and the leakage caused by blocking or contraction caused by expansion caused; the valve is characterized in that two ends of the Lip-Seal Lip-shaped sealing ring 6 are pressed between the third radial end face of the spring seat 4 and the second radial step of the inner wall of the channel of the valve body 7, so that the abrasion caused by the axial sliding of the Lip-Seal Lip-shaped sealing ring 6 in the installation cavity in the prior art is avoided, and the sealing reliability is improved; an axial retreating gap 9 is formed between the first radial end face of the spring seat 4 and the radial end face of the sealing seat 2, and the axial width of the axial retreating gap 9 is designed according to the design that when the sealing seat 2 is retracted into the channel of the valve body 7, the ball body 1 is reliably loaded into the valve cavity through the middle cavity, and the axial width is the width of the channel of the valve body 7 in the central line direction.
And sealing rings 5 are respectively arranged between the inner hole wall of the spring seat 4 and the outer circular surface of the sealing seat 2 and between the outer circular surface of the spring seat 4 and the inner wall of the channel of the valve body 7, so that impurities in a medium are prevented from entering the Lip-Seal Lip-shaped sealing ring 6 and the spring cavity.
Claims (2)
1. A novel upper-mounted low-temperature ball valve comprises a valve body (7), a valve seat, a ball body (1) and a valve cover, wherein the valve body (7) is of an integral structure, the ball body (1) and the valve seat are of an upper-mounted structure, the valve seat is a floating valve seat, the floating valve seat comprises a sealing seat (2), a pressing ring (3), a spring seat (4) and a Lip-Seal Lip-shaped sealing ring (6), the Lip-Seal Lip-shaped sealing ring (6) is installed between the radial outer circular surface of the sealing seat (2) and the inner circular wall of a channel of the valve body (7), the valve seat is of a DIB-2 structure, the pressing ring (3) is installed on an external thread of the outer circle of one side, close to the sealing surface, of the sealing seat (2) through an internal thread, one radial end surface of the pressing ring (3) is in abutting contact with a first radial end surface of the spring seat (4), a spring, a spring (8) is arranged in the spring cavity, the outer circular surface of the spring seat (4) is in dynamic sealing fit with the inner hole wall of the valve body (7), and the inner hole wall of the spring seat (4) is in dynamic sealing fit with the outer circular surface of the sealing seat (2); the valve is characterized in that two ends of a Lip-Seal Lip-shaped sealing ring (6) are pressed between a third radial end face of a spring seat (4) and a second radial step on the inner wall of a channel of a valve body (7); an axial clearance (9) is arranged between the first radial end surface of the spring seat (4) and the radial end surface of the sealing seat (2).
2. The novel upper-mounted low-temperature ball valve as claimed in claim 1, wherein sealing rings (5) are respectively arranged between the inner hole wall of the spring seat (4) and the outer circular surface of the sealing seat (2) and between the outer circular surface of the spring seat (4) and the inner wall of the passage of the valve body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251141.9U CN209743658U (en) | 2019-02-28 | 2019-02-28 | Novel upper assembling type low-temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251141.9U CN209743658U (en) | 2019-02-28 | 2019-02-28 | Novel upper assembling type low-temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209743658U true CN209743658U (en) | 2019-12-06 |
Family
ID=68709015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920251141.9U Active CN209743658U (en) | 2019-02-28 | 2019-02-28 | Novel upper assembling type low-temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209743658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681669A (en) * | 2019-02-28 | 2019-04-26 | 浙江伯特利科技有限公司 | A kind of novel upper-mounting type cryogenic ball valve |
-
2019
- 2019-02-28 CN CN201920251141.9U patent/CN209743658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681669A (en) * | 2019-02-28 | 2019-04-26 | 浙江伯特利科技有限公司 | A kind of novel upper-mounting type cryogenic ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325102 Dongou Industrial Zone, Oubei street, Yongjia County, Wenzhou, Zhejiang Patentee after: Zhejiang bertley Technology Co.,Ltd. Address before: 325102 Dongou Industrial Zone, Oubei street, Yongjia County, Wenzhou, Zhejiang Patentee before: ZHEJIANG BOTELI VALVE Group |
|
| CP01 | Change in the name or title of a patent holder |