CN202418626U - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN202418626U CN202418626U CN2012200504936U CN201220050493U CN202418626U CN 202418626 U CN202418626 U CN 202418626U CN 2012200504936 U CN2012200504936 U CN 2012200504936U CN 201220050493 U CN201220050493 U CN 201220050493U CN 202418626 U CN202418626 U CN 202418626U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- stop
- rod
- valve body
- 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
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Abstract
The utility model discloses a stop valve, which comprises a valve body, a valve seat arranged in the valve body, and a valve rod which penetrates through a valve cover to extend to the valve body, wherein the valve cover is arranged on the valve body; a valve core which is in screw thread fit with the valve rod is arranged in the valve body; the top of the valve rod is provided with a hand wheel; a section of the valve core, which is matched with the valve rod, is a regular prism; a regular polygonal hole matched with the regular prism is formed at the lower end of the valve cover; and a limiting step is arranged on a section of the valve rod, which is positioned in the valve cover. The stop valve has a simple structure and can provide a large operating space for a worker, the valve core and the valve seat are slightly worn, the service life of the stop valve can be effectively prolonged, and the working stability of the stop valve is guaranteed.
Description
Technical field
The utility model relates to valve technology field, relates in particular to a kind of stop valve.
Background technique
Stop valve is a kind of valve that is widely used on the fluid circuit, is made up of parts such as valve body, valve gap, valve rod, spool, valve seat and handwheels, and its method for using is very simple; The staff rotates handwheel; Realize the rise and fall of valve rod through the screw-thread fit between valve rod and the valve gap, and then realize being fixed in the rise and fall of the spool of valve rod bottom, accomplish opening and sealing valve seat through spool; Accomplish the operation of the through and off of stop valve; But this stop valve has defective in use: the one, and valve core rotation during operation, when spool contacts with valve seat, has the phenomenon of pivoting friction, easily spool is caused wearing and tearing; The 2nd, valve rod needs rise and fall during operation, has taken the operating space, is unfavorable for operation; The 3rd, for face seal contacts, sealing load is bigger between spool and the valve seat, opens and closes when frequent at stop valve, and wearing and tearing or corrosion take place between the sealing surface of spool and valve seat easily, causes the stop valve sealing not thorough.
The model utility content
The utility model technical problem to be solved is: a kind of stop valve is provided, in use can avoids the wearing and tearing of spool, prolong the working life of stop valve.
For solving the problems of the technologies described above; The technological scheme of the utility model is: stop valve, and comprise valve body and be arranged on the valve seat in the said valve body, on the said valve body valve gap is installed; Also comprise and pass the valve rod that said valve gap stretches to said valve body; Be provided with the spool that cooperates with said threaded stem in the said valve body, the top of said valve rod is provided with handwheel, and a section of matching with said valve rod of said spool is regular prism; The lower end of said valve gap has the regular polygon hole suitable with said regular prism, and said valve rod is positioned at a section of said valve gap and is provided with limited step.
As a preferred implementation, the annular region that said spool is aimed at said sealing surface of seat is the cambered surface setting.
After having adopted technique scheme, the beneficial effect of the utility model is: because a section of matching with valve rod of spool is regular prism, the while lower end of valve gap has the regular polygon hole suitable with this regular prism; And valve rod is positioned on a section of valve gap and also is provided with limited step; When the staff rotated handwheel, under the effect of limited step, valve rod only rotated; Can not move up and down; Spool can only move up and down under the restriction in regular polygon hole simultaneously, and the situation of so just having avoided valve core rotation to go up and down makes the friction that do not rotate between spool and the valve seat; And stem position immobilizes, for the staff provides working space easily.
Be the cambered surface setting because spool is aimed at the annular region of sealing surface of seat,, avoid spool and valve seat to be damaged and have influence on the work of stop valve when the operation spool contacts with valve seat, when breaking away from, can a smoother transition region be provided for it.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the utility model embodiment's a cross-sectional schematic;
Fig. 2 is the cross-sectional schematic at A-A place among Fig. 1;
Among the figure: 1. valve body; 2. valve gap; 21. equilateral triangle hole; 3. valve rod; 31. tri-prism; 4. spool; 5. valve seat; 6. handwheel; 7. limited step; 8. annular region; 9. silica gel sheet;
Embodiment
As shown in Figure 1; Cross-sectional schematic for a kind of embodiment of stop valve; Fig. 2 is the cross-sectional schematic at A-A place among Fig. 1; This stop valve comprises valve body 1 and the valve seat 5 that is arranged in the said valve body 1, on the said valve body 1 valve gap 2 is installed, and is provided with seal ring between said valve body 1 and the valve gap 2 and seals; This stop valve comprises that also passing said valve gap 2 stretches to the valve rod 3 in the said valve body 1, is provided with handwheel 6 on the top of said valve rod 3 in order to the operation stop valve, is positioned at said valve rod 3 on a section of said valve gap 2 to be provided with limited step 7; In said valve body 1, be provided with spool 4; Be provided with the silica gel sheet 9 that the annular region 8 with said valve seat 5 sealing surfaces is sealed and matched in the bottom of said spool 4; And between said valve rod 3 and the said spool 4 for being threaded, can realize the through and off of stop valve through the said spool 4 and the effect of said valve seat 5.
One section of matching with said valve rod 3 of said spool 4 is regular prism, and what the regular prism among this embodiment adopted is tri-prism 31, has the equilateral triangle hole 21 suitable with said tri-prism 31 simultaneously in the lower end of said valve gap 2.
The annular region 8 that said spool 4 is aimed at said valve seat 5 sealing surfaces is the cambered surface setting; When the operation spool 4 contact with valve seat 5, when breaking away from; Can avoid spool 4 and valve seat 5 to be damaged and have influence on the work of stop valve for it provides a smoother transition region.Prolong the working life of spool 4 and valve seat 5 effectively.
The working principle of this stop valve is:
The staff rotates handwheel 6, drives valve rod 3 and rotates, because the effect of limited step 7; 3 of valve rods rotate, and do not move up and down, simultaneously because valve rod 3 is a threaded connection relation with spool 4; And spool 4 is in the equilateral triangle hole 21 of valve gap 2; So just caused spool 4 to move up and down along this equilateral triangle hole 21, when the silica gel sheet 9 of spool 4 bottoms with after valve seat 5 contacts, this stop valve promptly is in off state; When the silica gel sheet 9 of spool 4 bottoms with after valve seat 5 does not contact, this stop valve promptly is in opening state.In this process, valve rod 3 is in a fixed position constant always, for the staff provides bigger operating space, and when contacting with valve seat 5, can the not rotate phenomenon of friction of spool 4, avoided spool 4 and valve seat 5 are caused wearing and tearing.
This stop valve structure is simple, can bigger operating space be provided for the staff, and spool and the prooving of valve seat are little, can prolong the working life of stop valve effectively, guarantees the working stability of stop valve.
The utility model is not limited to above-mentioned embodiment, and all are based on the technical conceive of the utility model, and the structural improvement of having done all falls among the protection domain of the utility model.
Claims (4)
1. stop valve; Comprise valve body and be arranged on the valve seat in the said valve body; On the said valve body valve gap is installed, also comprises and pass the valve rod that said valve gap stretches to said valve body, be provided with the spool that cooperates with said threaded stem in the said valve body; The top of said valve rod is provided with handwheel; It is characterized in that: a section of matching with said valve rod of said spool is regular prism, and the lower end of said valve gap has the regular polygon hole suitable with said regular prism, and said valve rod is positioned at a section of said valve gap and is provided with limited step.
2. stop valve as claimed in claim 1 is characterized in that: the annular region that said spool is aimed at said sealing surface of seat is the cambered surface setting.
3. stop valve as claimed in claim 2 is characterized in that: the bottom of said spool is provided with the silica gel sheet that the annular region with said sealing surface of seat is sealed and matched.
4. stop valve as claimed in claim 1 is characterized in that: said regular prism is a tri-prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200504936U CN202418626U (en) | 2012-02-16 | 2012-02-16 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200504936U CN202418626U (en) | 2012-02-16 | 2012-02-16 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418626U true CN202418626U (en) | 2012-09-05 |
Family
ID=46743396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200504936U Expired - Fee Related CN202418626U (en) | 2012-02-16 | 2012-02-16 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375084A (en) * | 2019-08-09 | 2019-10-25 | 崇州市岷江塑胶有限公司 | A kind of PE wildcard-filter style shut-off valve |
| CN110388477A (en) * | 2019-08-09 | 2019-10-29 | 崇州市岷江塑胶有限公司 | A kind of PPR wildcard-filter style shut-off valve |
-
2012
- 2012-02-16 CN CN2012200504936U patent/CN202418626U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375084A (en) * | 2019-08-09 | 2019-10-25 | 崇州市岷江塑胶有限公司 | A kind of PE wildcard-filter style shut-off valve |
| CN110388477A (en) * | 2019-08-09 | 2019-10-29 | 崇州市岷江塑胶有限公司 | A kind of PPR wildcard-filter style shut-off 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20200216 |