CN213393575U - Right-angle stop valve for refrigeration - Google Patents
Right-angle stop valve for refrigeration Download PDFInfo
- Publication number
- CN213393575U CN213393575U CN202022370536.6U CN202022370536U CN213393575U CN 213393575 U CN213393575 U CN 213393575U CN 202022370536 U CN202022370536 U CN 202022370536U CN 213393575 U CN213393575 U CN 213393575U
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- valve
- valve body
- refrigeration
- angle stop
- valve rod
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Abstract
The utility model belongs to the technical field of the valve technique and specifically relates to a right angle stop valve for refrigeration, the main part includes the valve body, installs the valve cap on the valve body and sets up the valve rod in the valve body, valve body upper portion is equipped with valve-stem nut, it has sealing device to compact between valve-stem nut and the valve body. Compared with the prior art, the leakage of the refrigerant caused by thermal expansion and cold contraction of the sealing device at the valve rod due to temperature change can be prevented, the range of the applicable environment temperature of the right-angle stop valve is improved, and the sealing performance is further ensured.
Description
Technical Field
The utility model belongs to the technical field of the valve technique and specifically relates to a right angle stop valve for refrigeration.
Background
The right-angle stop valve is suitable for pipelines of various working conditions in various industries to cut off or connect pipeline media. In the domestic refrigeration industry, the right angle stop valve is widely applied to refrigeration pipelines, but the sealing structure of the current right angle stop valve adopts a sealing gasket made of plastics or rubber materials, and the sealing structure operates under the environment temperature in a large range and is easy to generate the leakage of a refrigerant. There is a need for an improved sealing arrangement for a right angle shut off valve to accommodate a wider range of ambient temperatures.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned technical problem that exists among the prior art, the utility model discloses mainly lie in overcoming the little problem of present right angle stop valve adaptation ambient temperature scope, provide a brand-new sealing scheme for the right angle stop valve can adapt to more extensive ambient temperature, improves the leakproofness, and concrete content is as follows.
The utility model provides a right angle stop valve for refrigeration, the main part includes the valve body, installs valve cap on the valve body and sets up the valve rod in the valve body, valve body upper portion is equipped with valve-stem nut, it has sealing device to compact between valve-stem nut and the valve body.
Further, sealing device is including sealed the pad, graphite sealing washer and flat gasket, valve rod nut's lower extreme fills up in proper order and presses sealed pad, graphite sealing washer and flat gasket.
Furthermore, the valve body is provided with an inlet channel and an outlet channel which are vertically arranged, and a cavity for the valve rod to move up and down, and the upper end of the valve body is provided with internal threads and is connected with a valve rod nut through the internal threads.
Furthermore, the valve also penetrates through a middle through hole of the valve rod nut and is screwed into a cavity of the valve body through the valve rod nut, the upper end of the valve rod is of a universal four-plane interface structure, and the lower end of the valve rod is of a sealing surface with an inclination angle.
Furthermore, the passage openings of the inlet passage and the outlet passage are respectively provided with an inlet dustproof cap and an outlet dustproof cap.
The utility model discloses can adapt to more extensive ambient temperature, and have more reliable leakproofness.
Drawings
Fig. 1 is a schematic overall structure diagram of the present invention;
in the figure, 1-valve cap, 2-valve rod nut, 3-sealing gasket, 4-graphite sealing ring, 5-flat gasket, 6-valve rod, 7-valve body, 8-inlet dust cap and 9-outlet dust cap.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the main body includes a valve body 7, a bonnet 1 mounted on the valve body 7, and a valve rod 6 disposed in the valve body 7, the valve body 7 has a vertically disposed inlet passage and outlet passage and a chamber for the valve rod 6 to move up and down, a stem nut 2 is disposed on the upper portion of the valve body 7, an internal thread is disposed on the upper end of the valve body 7 and connected to the stem nut 2 via the internal thread, a sealing device is tightly pressed between the stem nut 2 and the valve body 7, the sealing device includes a sealing gasket 3, a graphite sealing ring 4, and a flat gasket 5, the stem nut 2 is screwed into the upper portion of the valve body 7 via a thread and tightly presses the sealing gasket 3, the graphite sealing ring 4, and the flat gasket 5 onto the valve body 7 in turn, so that the valve rod 6. The middle of the valve rod nut 2 is provided with a through hole for the sliding of the valve rod 6, the valve rod 6 penetrates through the through hole of the valve rod nut 2 and is screwed into the valve body 7 through the nut, the upper end of the valve rod 6 is of a universal four-plane interface structure and can be externally connected with various switches, and the lower end of the valve rod 6 is a sealing surface with an inclination angle and can stop the circulation of refrigerant between an inlet and an outlet in the cavity.
Entrance dustproof cap 8 and export dustproof cap 9 are still sheathe in respectively to entrance channel and exit channel's passway mouth, compare in prior art, have increased a graphite packing 4, can prevent because of the temperature variation, the refrigerant that seal gasket 3 expend with heat and contract with cold and arouse leaks in valve rod 6 department, have improved the scope of the applicable ambient temperature of right angle stop valve, have also further guaranteed the leakproofness.
The use process comprises the following steps:
when the right-angle stop valve is opened, the valve rod 6 is rotated, the valve rod 6 is lifted to a certain height, the sealing surface of the valve rod 6 is not contacted with the valve body 7, and at the moment, the refrigerants at the inlet and the outlet in the cavity of the valve body 7 are mutually communicated. Due to the existence of the sealing gasket 3 and the graphite sealing ring 4, the refrigerant can not flow out of the valve rod 6.
When the right-angle stop valve is closed, the valve rod 6 is rotated, the valve rod 6 descends to a certain height, the sealing surface of the valve rod 6 is in contact with the valve body 7 to form a closed structure, and at the moment, refrigerants at the inlet and the outlet in the cavity of the valve body 7 do not circulate. Due to the existence of the sealing gasket 3 and the graphite sealing ring 4, the refrigerant can not flow out of the valve rod 6 and can only be sealed in the cavity of the valve body 7.
Claims (5)
1. The utility model provides a right angle stop valve for refrigeration, the main part includes valve body (7), installs valve cap (1) on valve body (7) and sets up valve rod (6) in valve body (7), its characterized in that, valve body (7) upper portion is equipped with valve-stem nut (2), it has sealing device to compress tightly between valve-stem nut (2) and valve body (7).
2. The right angle stop valve for refrigeration as claimed in claim 1, wherein the sealing means comprises a sealing gasket (3), a graphite sealing ring (4) and a flat gasket (5), and the lower end of the stem nut (2) is sequentially pressed against the sealing gasket (3), the graphite sealing ring (4) and the flat gasket (5).
3. A right angle stop valve for refrigeration as set forth in claim 1, characterized in that the valve body (7) has vertically arranged inlet and outlet passages, and a chamber for the up and down movement of the valve stem (6), and the upper end of the valve body (7) is provided with an internal thread and is connected with the valve stem nut (2) through the internal thread.
4. A right angle stop valve for refrigeration as claimed in claim 3, characterized in that the valve rod (6) also passes through the middle through hole of the valve rod nut (2) and is screwed into the chamber of the valve body (7) through the valve rod nut (2), the upper end of the valve rod (6) is a universal four-plane interface structure, and the lower end of the valve rod (6) is a sealing surface with an inclination angle.
5. A right angle stop valve for refrigeration as claimed in claim 3, wherein the passage openings of the inlet passage and the outlet passage are provided with an inlet dust cap (8) and an outlet dust cap (9), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022370536.6U CN213393575U (en) | 2020-10-22 | 2020-10-22 | Right-angle stop valve for refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022370536.6U CN213393575U (en) | 2020-10-22 | 2020-10-22 | Right-angle stop valve for refrigeration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393575U true CN213393575U (en) | 2021-06-08 |
Family
ID=76189736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022370536.6U Active CN213393575U (en) | 2020-10-22 | 2020-10-22 | Right-angle stop valve for refrigeration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393575U (en) |
-
2020
- 2020-10-22 CN CN202022370536.6U patent/CN213393575U/en active Active
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