CN205260879U - High temperature resistant non return stop valve - Google Patents
High temperature resistant non return stop valve Download PDFInfo
- Publication number
- CN205260879U CN205260879U CN201520847283.3U CN201520847283U CN205260879U CN 205260879 U CN205260879 U CN 205260879U CN 201520847283 U CN201520847283 U CN 201520847283U CN 205260879 U CN205260879 U CN 205260879U
- Authority
- CN
- China
- Prior art keywords
- spool
- inner chamber
- valve
- valve rod
- case
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 31
- 230000037361 pathway Effects 0.000 claims description 21
- 238000009434 installation Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 9
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model discloses a high temperature resistant non return stop valve, including valve body, disk seat, valve rod and case, the valve body includes inner chamber, liquid inlet channel and liquid channel, interior intracavity is placed in to the case, and including the shaft shoulder of upper end, the toper seal receptacle of lower extreme, in the shaft shoulder stretched into valve rod lower extreme cavity, the toper seal receptacle can feed through or separate liquid inlet channel and inner chamber with the cooperation of case mounting hole, valve rod lower extreme terminal surface and case toper seal receptacle upper end terminal surface are equipped with compression spring, the further improvement lies in: but valve rod lower extreme cavity up end and be equipped with complex ball grooves, spherical protruding respectively rather than the case shaft shoulder up end that corresponds, be conical surface seal structure between case toper seal receptacle and the case mounting hole, case mounting hole upper seal face is equipped with wear -resisting, high temperature coating. The utility model discloses it is wear -resisting, high temperature resistant, have two kinds of functions on stop valve and the check valve, improved piping erection efficiency, practiced thrift the cost, avoided the leakage problem of secondary installation existence, it is reliably durable.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of stop valve.
Background technology
In traditional pipeline is installed, in order to control the backflow phenomenon of pumped (conveying) medium and feed flow to be controlled, generally on conveying branch road, a check-valves and a stop valve are installed; In order to realize above-mentioned technique effect, a check-valves and a stop valve are installed on pipeline simultaneously, its operation is more loaded down with trivial details, and cost is higher, and there is the hidden danger of leaking in secondary installing. Chinese patent application publication No. CN103953733A discloses a kind of " novel cutoff valve ": spool can slide up and down to be arranged on valve rod lower end and in fluid passage top, under free state, spool is sealing liquid passage under Gravitative Loads; Under feed flow duty, the fluid pressure of feed liquor port is greater than the fluid pressure of fluid port, promotes spool and move upward to open fluid passage under hydraulic action; Under cut-off duty, the fluid pressure of feed liquor port is less than the fluid pressure of fluid port, promotes spool and move downward with sealing liquid passage under the Gravitative Loads of spool and hydraulic action. This stop valve, there are two kinds of functions of stop valve and check-valves, improve pipeline installation effectiveness, save cost, but there is lower column defects: under cut-off duty, due to the fluid pressure fluctuation of the fluid pressure of feed liquor port, fluid port, likely appear at the fluid passage sealing under the Gravitative Loads of spool and hydraulic action and can be interrupted and open, cannot ensure reliably non-return effect.
Summary of the invention
The utility model, for the deficiencies in the prior art, proposes a kind of high temperature resistant stop valve that ensures reliably non-return effect.
The utility model is achieved through the following technical solutions technical goal.
High temperature resistant stop valve, comprises valve body, valve seat, valve rod and spool; Described valve body comprises feed pathway and the liquid outlet channel of inner chamber, inner chamber both sides; Described inner chamber is communicated with liquid outlet channel; Between the inner chamber of described valve body, feed pathway, be provided with the dividing plate of horizontal, dividing plate is provided with spool installing hole to be communicated with the feed pathway of inner chamber bottom on top; Described valve seat is arranged on valve body, and valve rod is vertical direction and is arranged on valve seat; Described spool is placed in inner chamber, comprises the shaft shoulder of upper end, the conical sealing seat of lower end, and the shaft shoulder stretches in the cavity of valve rod lower end, and can in cavity, slide up and down, and conical sealing seat coordinates and can be communicated with or separate feed pathway and inner chamber with spool installing hole; Its improvements are: described valve rod lower end surface and spool conical sealing seat upper end end face are provided with Compress Spring.
In said structure, cavity upper surface, described valve rod lower end and the spool shaft shoulder upper surface corresponding with it are respectively equipped with ball recess, the hemisphere jut that can coordinate.
In said structure, between described spool conical sealing seat and spool installing hole, be conical surface sealing structure, on spool installing hole, sealing surface is provided with wear-resisting, high-temperaure coating.
When the utility model uses, under feed flow duty, the fluid pressure of feed pathway is greater than the summation of the pressure of pressure, the Compress Spring effect of liquid outlet channel fluid pressure, spool Gravitative Loads, promotes spool and move upward to be communicated with feed pathway and inner chamber under hydraulic action; Under cut-off duty, under the Gravitative Loads of Compress Spring effect, spool and hydraulic action, promote spool and move downward to separate feed pathway and inner chamber; Certainly, also have one more thoroughly to end duty, spool is moved downward, make the hemisphere jut of the ball recess compressing spool shaft shoulder upper surface of cavity upper surface, valve rod lower end, the sealing surface of spool conical sealing seat and spool installing hole is sealed more reliably.
The utility model compared with prior art, has following good effect:
1, when feed pathway stops feed flow, under the Gravitative Loads of Compress Spring effect, spool and hydraulic action, promote spool and move downward to separate feed pathway and inner chamber, reach check-valves effect, improved pipeline installation effectiveness, save cost, the leakage problem of having avoided secondary installing to exist.
2, valve rod lower end surface and spool conical sealing seat upper end end face are provided with Compress Spring, under cut-off duty, under the Gravitative Loads of Compress Spring effect, spool and hydraulic action, promote spool and move downward to separate feed pathway and inner chamber, owing to having increased Compress Spring, significantly improve the reliability of the utility model non-return.
3, valve rod lower end cavity upper surface and the spool shaft shoulder upper surface corresponding with it are respectively equipped with ball recess, the hemisphere jut that can coordinate, when use, spool is moved downward, make the hemisphere jut of the ball recess compressing spool shaft shoulder upper surface of cavity upper surface, valve rod lower end, like this, position that can self regulating valve core, seals the sealing surface of spool conical sealing seat and spool installing hole more reliably.
4, between spool conical sealing seat and spool installing hole, be conical surface sealing structure, on spool installing hole, sealing surface is provided with wear-resisting, high-temperaure coating, can significantly improve wear-resisting, resistance to elevated temperatures of the present utility model.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is I part enlarged diagram in Fig. 1.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and in conjunction with the embodiments below.
High temperature resistant stop valve shown in the drawings, comprises valve body 1, valve seat 2, valve rod 3 and spool 4; Valve body 1 comprises feed pathway 1.2 and the liquid outlet channel 1.3 of inner chamber 1.1, inner chamber 1.1 both sides; Inner chamber 1.1 is communicated with liquid outlet channel 1.3; Between the inner chamber 1.1 of valve body 1, feed pathway 1.2, be provided with the dividing plate 1.4 of horizontal, dividing plate 1.4 is provided with spool installing hole 1.4.1 to be communicated with the inner chamber 1.1 on top, the feed pathway 1.2 of bottom; Valve seat 2 is arranged on valve body 1, and valve rod 3 is vertical direction and is arranged on valve seat 2; Spool 4 is placed in inner chamber 1.1, comprise the shaft shoulder 4.1 of upper end, the conical sealing seat 4.2 of lower end, the shaft shoulder 4.1 stretches in valve rod 3 lower end cavitys, and can in cavity, slide up and down, and conical sealing seat 4.2 coordinates and can be communicated with or separate feed pathway 1.2 and inner chamber 1.1 with spool installing hole 1.4.1; Valve rod 3 lower end surfaces and spool 4 conical sealing seat 4.2 upper end end faces are provided with Compress Spring 5.
Valve rod 3 cavity upper surfaces, lower end and spool 4 shaft shoulder 4.1 upper surfaces corresponding with it are respectively equipped with ball recess, the hemisphere jut that can coordinate.
Between spool 4 conical sealing seats 4.2 and spool installing hole 1.4.1, be conical surface sealing structure, the upper sealing surface of spool installing hole 1.4.1 is provided with wear-resisting, high-temperaure coating 1.4.1.1.
Under feed flow duty, the fluid pressure of feed pathway 1.2 is greater than the pressure of liquid outlet channel 1.3 fluid pressures, spool 4 Gravitative Loads, the summation of pressure that Compress Spring 5 acts on, promotes spool 4 and move upward to be communicated with feed pathway 1.2 and inner chamber 1.1 under hydraulic action; Under cut-off duty, act at Compress Spring 5, promote spool 4 under the Gravitative Loads of spool 4 and hydraulic action and move downward to separate feed pathway and inner chamber; Certainly, also have one more thoroughly to end duty, spool 4 is moved downward, make the hemisphere jut of ball recess compressing spool 4 shaft shoulder 4.1 upper surfaces of valve rod 3 cavity upper surfaces, lower end, spool 4 conical sealing seats 4.2 are sealed more reliably with the sealing surface of spool installing hole 1.4.1.
Claims (3)
1. a high temperature resistant stop valve, comprises valve body (1), valve seat (2), valve rod (3) and spool (4); Described valve body (1) comprises feed pathway (1.2) and the liquid outlet channel (1.3) of inner chamber (1.1), inner chamber (1.1) both sides; Described inner chamber (1.1) is communicated with liquid outlet channel (1.3); The dividing plate (1.4) that is provided with horizontal between the inner chamber (1.1) of described valve body (1), feed pathway (1.2), dividing plate (1.4) is provided with spool installing hole (1.4.1) to be communicated with the inner chamber (1.1) on top, the feed pathway (1.2) of bottom; It is upper that described valve seat (2) is arranged on valve body (1), and valve rod (3) is vertical direction and is arranged on valve seat (2); Described spool (4) is placed in inner chamber (1.1), comprise the shaft shoulder (4.1) of upper end, the conical sealing seat (4.2) of lower end, the shaft shoulder (4.1) stretches in the cavity of valve rod (3) lower end, and can in cavity, slide up and down, conical sealing seat (4.2) coordinates and can be communicated with or separate feed pathway (1.2) and inner chamber (1.1) with spool installing hole (1.4.1); It is characterized in that: described valve rod (3) lower end surface and spool (4) conical sealing seat (4.2) upper end end face are provided with Compress Spring (5).
2. high temperature resistant stop valve according to claim 1, is characterized in that: cavity upper surface, described valve rod (3) lower end and spool (4) shaft shoulder (4.1) upper surface corresponding with it are respectively equipped with ball recess, the hemisphere jut that can coordinate.
3. high temperature resistant stop valve according to claim 1 and 2, it is characterized in that: between described spool (4) conical sealing seat (4.2) and spool installing hole (1.4.1), be conical surface sealing structure, the upper sealing surface of spool installing hole (1.4.1) is provided with wear-resisting, high-temperaure coating (1.4.1.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847283.3U CN205260879U (en) | 2015-10-28 | 2015-10-28 | High temperature resistant non return stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847283.3U CN205260879U (en) | 2015-10-28 | 2015-10-28 | High temperature resistant non return stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260879U true CN205260879U (en) | 2016-05-25 |
Family
ID=56002408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520847283.3U Expired - Fee Related CN205260879U (en) | 2015-10-28 | 2015-10-28 | High temperature resistant non return stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641295A (en) * | 2015-10-28 | 2017-05-10 | 江苏海达船用阀业有限公司 | High-temperature-resisting check and stop valve |
| CN107013741A (en) * | 2017-05-17 | 2017-08-04 | 南通艾迈特机械有限公司 | A kind of self checking structure of valve |
-
2015
- 2015-10-28 CN CN201520847283.3U patent/CN205260879U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641295A (en) * | 2015-10-28 | 2017-05-10 | 江苏海达船用阀业有限公司 | High-temperature-resisting check and stop valve |
| CN107013741A (en) * | 2017-05-17 | 2017-08-04 | 南通艾迈特机械有限公司 | A kind of self checking structure of valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 |