CN111207220A - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN111207220A CN111207220A CN202010227644.XA CN202010227644A CN111207220A CN 111207220 A CN111207220 A CN 111207220A CN 202010227644 A CN202010227644 A CN 202010227644A CN 111207220 A CN111207220 A CN 111207220A
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- guide
- sealing
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
A check valve comprises a valve body (101), a first annular valve seat (102), a second annular valve seat (103), a valve clack (104), a spring (105) and a support sleeve (106), wherein the valve body (101) is formed by combining a liquid inlet part with a small pipe diameter and a liquid outlet part with a large pipe diameter, a first valve seat fixing groove is formed in the inner wall of the outlet end of the liquid inlet part, a second valve seat fixing groove is formed in the inner wall of the inlet end of the liquid outlet part, a spherical sealing groove is formed in the end part of the first annular valve seat (102), the first annular valve seat (102) is fixedly installed in the first valve seat fixing groove, and the second annular valve seat (103) is fixedly installed in the second valve seat fixing groove; the advantages are that: the valve adopts double sealing, elastic sealing and spherical sealing are combined, and a guide mechanism is additionally arranged at one end of the valve clack, so that the valve is accurately centered, and the abrasion of a sealing surface is reduced.
Description
Technical Field
The invention relates to the field of check valves, in particular to a check valve.
Background
At present, the existing check valve has the defects of untight sealing of the valve clack and easy leakage, and when the medium pressure in the valve is higher, the valve clack is easy to be centered and inaccurate, so that the sealing effect is influenced, and meanwhile, the sealing surface is easy to wear.
Disclosure of Invention
The present invention is directed to a check valve, which overcomes the above-mentioned shortcomings.
The invention comprises a valve body, a first annular valve seat, a second annular valve seat, a valve clack, a spring and a support sleeve,
the valve body is formed by combining a liquid inlet part with a thinner pipe diameter and a liquid outlet part with a thicker pipe diameter,
a first valve seat fixing groove is arranged on the inner wall of the outlet end of the liquid inlet part, a second valve seat fixing groove is arranged on the inner wall of the inlet end of the liquid outlet part, a spherical sealing groove is arranged at the end part of the first annular valve seat, the first annular valve seat is fixedly arranged in the first valve seat fixing groove, the second annular valve seat is fixedly arranged in the second valve seat fixing groove,
the one end of valve clack is the guide bar, the other end of valve clack is sealed dish, be provided with the elastic sealing ring who uses with the cooperation of second ring disk seat on the terminal surface of sealed dish, be provided with the spherical sealing arch of using with the cooperation of spherical sealing groove on the terminal surface of sealed dish, the liquid outlet department at valve body liquid outlet portion is installed to the one end of supporting the cover, be provided with the guide ring in the other end of supporting the cover, the annular equipartition is opened on the outer wall of supporting the cover has a set of medium through hole, the guide bar of valve clack inserts in the guide.
The valve clack guiding mechanism comprises a guiding rod and a guiding sleeve, wherein one end of the guiding rod is installed on the end face of the spherical sealing bulge in a threaded mode, the outer wall of the guiding sleeve is fixedly installed in the liquid inlet portion of the valve body through a group of supporting rods which are evenly distributed in an annular mode, and the guiding rod is located in the guiding sleeve.
The end part of the guide rod close to the inlet end of the valve body is conical, and one end of the support rod on the guide sleeve is provided with resistance reducing bulges for reducing medium resistance.
The guide ring is a graphite guide ring.
The elastic sealing ring is a rubber sealing gasket.
The invention has the advantages that: the valve adopts double sealing, elastic sealing and spherical sealing are combined, and a guide mechanism is additionally arranged at one end of the valve clack, so that the valve is accurately centered, and the abrasion of a sealing surface is reduced.
Description of the drawings
Fig. 1 is a partially hidden structural schematic view of the valve body of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Detailed Description
As shown in the drawings, the present invention comprises a valve body 101, a first annular valve seat 102, a second annular valve seat 103, a valve flap 104, a spring 105 and a support sleeve 106,
the valve body 101 is composed of a liquid inlet part with a small pipe diameter and a liquid outlet part with a large pipe diameter,
a first valve seat fixing groove is arranged on the inner wall of the outlet end of the liquid inlet part, a second valve seat fixing groove is arranged on the inner wall of the inlet end of the liquid outlet part, a spherical sealing groove is arranged at the end part of the first annular valve seat 102, the first annular valve seat 102 is fixedly arranged in the first valve seat fixing groove, the second annular valve seat 103 is fixedly arranged in the second valve seat fixing groove,
one end of the valve clack 104 is a guide rod 107, the other end of the valve clack 104 is a sealing disc 108, an elastic sealing ring 109 matched with the second annular valve seat 103 for use is arranged on the end surface of the sealing disc 108, a spherical sealing bulge 110 matched with the spherical sealing groove for use is arranged on the end surface of the sealing disc 108, one end of the support sleeve 106 is arranged at a liquid outlet of the valve body 101, a guide ring 111 is arranged in the other end of the support sleeve 106, a group of medium through holes are uniformly distributed on the outer wall of the support sleeve 106 in an annular mode, the guide rod 107 of the valve clack 104 is inserted into the guide ring 111, and the.
The valve clack guiding mechanism comprises a guiding rod 112 and a guiding sleeve 113, one end of the guiding rod 112 is installed on the end face of the spherical sealing protrusion 110 in a threaded mode, the outer wall of the guiding sleeve 113 is fixedly installed in the liquid inlet portion of the valve body 101 through a group of supporting rods which are evenly distributed in an annular mode, and the guiding rod 112 is located in the guiding sleeve 113.
The end of the guide rod 112 close to the inlet end of the valve body 101 is conical, and one end of the support rod on the guide sleeve 113 is provided with a resistance reducing protrusion for reducing medium resistance.
The guide ring 111 is a graphite guide ring.
The elastic sealing ring 109 is a rubber sealing gasket.
The working mode and principle are as follows:
as shown in fig. 2: fluid medium enters the check valve through the liquid inlet part of the valve body 101, the valve clack 104 is pressed rightwards under the pressure action of the fluid medium, the spring 105 contracts, the guide rod 107 of the valve clack 104 moves rightwards and extends into the support sleeve 106, at the moment, the valve clack 104 is opened, the fluid medium flows into the liquid outlet part of the valve body 101 from the liquid inlet part of the valve body 101, and flows to the outlet end of the liquid outlet part of the valve body 101 through a medium hole in the support sleeve 106 to be output.
When the input of the fluid medium is stopped, the valve flap 104 is pressed against the first annular valve seat 102 and the second annular valve seat 103 under the tension of the spring 105, sealing the check valve, and when the fluid medium flows back, it is blocked by the sealing disk 108, preventing the back flow.
When the valve flap 104 is opened or closed, one end of the valve flap 104 is slidably guided in the guide ring 111 by the guide rod 107, and the other end of the valve flap 104 is slidably guided in the guide sleeve 113 by the guide rod 112.
Claims (5)
1. A check valve is characterized in that the check valve comprises a valve body (101), a first annular valve seat (102), a second annular valve seat (103), a valve clack (104), a spring (105) and a support sleeve (106),
the valve body (101) is formed by combining a liquid inlet part with a thinner pipe diameter and a liquid outlet part with a thicker pipe diameter,
a first valve seat fixing groove is arranged on the inner wall of the outlet end of the liquid inlet part, a second valve seat fixing groove is arranged on the inner wall of the inlet end of the liquid outlet part, a spherical sealing groove is arranged at the end part of the first annular valve seat (102), the first annular valve seat (102) is fixedly arranged in the first valve seat fixing groove, the second annular valve seat (103) is fixedly arranged in the second valve seat fixing groove,
one end of the valve clack (104) is a guide rod (107), the other end of the valve clack (104) is a sealing disc (108), an elastic sealing ring (109) matched with the second annular valve seat (103) for use is arranged on the end face of the sealing disc (108), a spherical sealing bulge (110) matched with the spherical sealing groove for use is arranged on the end face of the sealing disc (108), one end of a supporting sleeve (106) is arranged at a liquid outlet of the valve body (101), a guide ring (111) is arranged in the other end of the supporting sleeve (106), a group of medium through holes are uniformly distributed in the outer wall of the supporting sleeve (106) in an annular mode, the guide rod (107) of the valve clack (104) is inserted into the guide ring (111), and a spring (105) is fixed between the.
2. A check valve according to claim 1, characterized in that it further comprises a flap guide mechanism, the flap guide mechanism comprises a guide rod (112) and a guide sleeve (113), one end of the guide rod (112) is installed on the end face of the spherical sealing protrusion (110) in a threaded manner, the outer wall of the guide sleeve (113) is fixedly installed in the liquid inlet part of the valve body (101) through a set of support rods which are annularly and uniformly distributed, and the guide rod (112) is located in the guide sleeve (113).
3. A check valve according to claim 2, characterized in that the end of the guide rod (112) near the inlet end of the valve body (101) is conical, and the ends of the support rods on the guide sleeve (113) are each provided with a resistance-reducing protrusion for reducing the resistance of the medium.
4. A check valve according to claim 1, characterized in that the guide ring (111) is a graphite guide ring.
5. A check valve according to claim 1, characterized in that the elastic sealing ring (109) is a rubber sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010227644.XA CN111207220A (en) | 2020-03-27 | 2020-03-27 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010227644.XA CN111207220A (en) | 2020-03-27 | 2020-03-27 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111207220A true CN111207220A (en) | 2020-05-29 |
Family
ID=70787220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010227644.XA Withdrawn CN111207220A (en) | 2020-03-27 | 2020-03-27 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111207220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076422A (en) * | 2022-07-27 | 2022-09-20 | 北京中科富海低温科技有限公司 | Check valve |
-
2020
- 2020-03-27 CN CN202010227644.XA patent/CN111207220A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076422A (en) * | 2022-07-27 | 2022-09-20 | 北京中科富海低温科技有限公司 | Check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200529 |