CN205226386U - Heavy -calibre balanced type stop valve - Google Patents
Heavy -calibre balanced type stop valve Download PDFInfo
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- CN205226386U CN205226386U CN201520936451.6U CN201520936451U CN205226386U CN 205226386 U CN205226386 U CN 205226386U CN 201520936451 U CN201520936451 U CN 201520936451U CN 205226386 U CN205226386 U CN 205226386U
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- valve clack
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Abstract
The utility model relates to a heavy -calibre balanced type stop valve, including support, valve gap, valve body, setting valve rod and the valve clack in the valve body, having one in the valve body and supplying valve clack grafting complex hole, the hole both ends set up an inlet and liquid outlet respectively, the one end that the inlet is close to the hole sets up a cylindricality mesa that has the guiding hole along hole major axis direction, the liquid outlet sets up in cylindricality mesa upper end, the valve rod sets up in the hole, and the valve clack is connected to the lower extreme, the valve clack sets up in cylindricality mesa upper end, including main valve lamella, nested cooperation vice valve clack and the valve clack lid of setting in main valve lamella upper end in the main valve lamella. The utility model has the advantages of: it is sealed that heavy -calibre balanced type stop valve forms twice by main valve lamella and vice valve clack, and at valve open's in -process, vice valve clack is opened in advance, and high -pressure medium flows out from vice valve clack, has kept balance some pressure medium at valve inlet and liquid outlet both ends, can reduce the cracking pressure of main valve lamella so greatly.
Description
Technical field
The utility model relates to a kind of stop valve, particularly a kind of big diameter balanced stop valve.
Background technique
Valve is a kind of mechanical device controlling the flow, the flow direction, pressure, temperature etc. of the flowing medium flowed, also be parts basic in pipe-line system, and wherein stop valve is one of most popular a kind of valve, main dependence valve rod pressure, valve clack sealing surface and sealing surface of seat are fitted tightly, stop medium circulation, because only being permitted medium one-way flow, so have directivity when installing.
The patent No. is refer to a kind of Self-pressing combined unit of principal-auxilliary valve clack of stop valve in the utility model patent of 85204171, is particularly useful for high temperature, high pressure, heavy caliber stop valve.This valve is useful in high temperature, height, middle pressure hydrogen, air, steam, liquid and other medium pipeline.It by main valve clack, secondary flap, pressure-bearing cover, supporting sleeve, split volution, butterfly spring and valve clack cover and formed.Although this kind of stop valve reduces the valve rod power of valve opening, but in the moment of valve opening, medium is very large to the impact of main valve clack, structural design is unreasonable, reduce the working life of valve simultaneously, therefore be badly in need of the big diameter balanced stop valve of a kind of reasonable in design of development, long service life, through retrieval, do not find the same or analogous technological scheme with the utility model.
Model utility content
The technical problems to be solved in the utility model is to provide the big diameter balanced stop valve of a kind of reasonable in design, long service life.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of big diameter balanced stop valve, and its innovative point is: comprise from top to bottom set gradually support, valve gap and valve body, be arranged on valve rod in valve body and flap; In the middle part of described support and valve gap, there is a through hole A coordinated for valve rod grafting, there is in described valve body an endoporus coordinated for flap grafting, described endoporus two ends arrange a liquid entering hole and liquid outlet respectively, described liquid entering hole arranges along endoporus long axis direction the cylindricality table top that has pilot hole near one end of endoporus, and described liquid outlet is arranged on cylindricality table top upper end; Described valve rod to be arranged in through hole A and to extend in endoporus, and lower end connects flap; Described flap is arranged on cylindricality table top upper end, comprises secondary flap in main valve clack of main valve clack, nested arrangements and is arranged on the valve clack cover of main valve clack upper end.
Further, the Placement of described valve rod and flap is: the cross section of described valve rod lower end edge long axis direction is T-shaped, in the middle part of secondary flap, there is the T-slot that supplies valve rod lower end nested arrangements, there is in the middle part of described main valve clack a cavity be slidably matched for secondary flap, described cavity sidewalls arranges intake chute, lower end arranges a through hole B, and described valve clack cover is arranged on main valve clack upper end, and nested arrangements is in cavity.
Further, the height of described secondary flap is less than the height between intake chute upper end and valve clack cover bottom.
The utility model has the advantage of:
1) big diameter balanced stop valve forms two seals by main valve clack and secondary flap, in the process of valve opening, secondary flap is opened in advance, high-pressure medium flows out from secondary flap, balance the certain media pressure at valve liquid entering hole and liquid outlet two ends, greatly can reduce the cracking pressure of main valve clack like this;
2) stem diameter can reduce greatly, the compact overall structure of valve, can realize fast opening and closing simultaneously;
3) height of secondary flap is less than the height between intake chute upper end and valve clack cover bottom, and when secondary flap moves to cavity upper end, medium can flow through in through hole B and intake chute, reasonable in design.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of big diameter balanced stop valve of the utility model.
Fig. 2 is the structural representation of the flap of a kind of big diameter balanced stop valve of the utility model.
Embodiment
As depicted in figs. 1 and 2, the utility model discloses a kind of big diameter balanced stop valve, comprise from top to bottom set gradually support 1, valve gap 2 and valve body 3, be arranged on valve rod 4 in valve body 3 and flap 6.
In the middle part of support 1 and valve gap 2, there is a through hole A coordinated for valve rod 4 grafting, there is in valve body 3 endoporus 5 coordinated for flap 6 grafting, endoporus 5 two ends arrange a liquid entering hole 7 and liquid outlet 10 respectively, liquid entering hole 7 arranges along endoporus 5 long axis direction the cylindricality table top 8 that has pilot hole 9 near one end of endoporus 5, and liquid outlet 10 is arranged on cylindricality table top 8 upper end.
Valve rod 4 to be arranged in through hole A and to extend in endoporus 5, and the cross section of lower end edge long axis direction is T-shaped, and is connected with flap 6.
Flap 6 is arranged on cylindricality table top 8 upper end, comprise secondary flap 13 in main valve clack 11 of main valve clack 11, nested arrangements and be arranged on the valve clack cover 14 of main valve clack 11 upper end, there is in the middle part of main valve clack 11 cavity 15 be slidably matched for secondary flap 13, cavity 15 sidewall arranges intake chute 16, and lower end arranges a through hole B12; Secondary flap 13 is arranged in cavity 15, and middle part has the T-slot that supplies valve rod 4 lower end nested arrangements; Valve clack cover 14 is arranged on main valve clack 11 upper end, and nested arrangements is in cavity 15; Wherein the height of secondary flap 13 is less than the height between intake chute 16 upper end and valve clack cover 14 bottom.
When big diameter balanced stop valve enters opening state by closed condition, valve rod 4 moves upward, and drive secondary flap 13 to move upward along cavity 15, now medium flows to from liquid entering hole 7 and enters through hole B12, and then to flow out in intake chute 16 through cavity 15 and enter liquid outlet 10, when secondary flap 13 upper-end surface contacts with valve clack cover 14, drive main valve clack 11 to move upward, now pilot hole 9 upper end is opened, and liquid directly enters liquid outlet 10 by liquid entering hole 7 through pilot hole 9; Said process medium pressure reduces greatly, and vibrational power flow is rationally compact.
More than show and describe basic principle of the present utility model and major character.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a big diameter balanced stop valve, is characterized in that: comprise from top to bottom set gradually support, valve gap and valve body, be arranged on valve rod in valve body and flap; In the middle part of described support and valve gap, there is a through hole A coordinated for valve rod grafting, there is in described valve body an endoporus coordinated for flap grafting, described endoporus two ends arrange a liquid entering hole and liquid outlet respectively, described liquid entering hole arranges along endoporus long axis direction the cylindricality table top that has pilot hole near one end of endoporus, and described liquid outlet is arranged on cylindricality table top upper end; Described valve rod to be arranged in through hole A and to extend in endoporus, and lower end connects flap; Described flap is arranged on cylindricality table top upper end, comprises secondary flap in main valve clack of main valve clack, nested arrangements and is arranged on the valve clack cover of main valve clack upper end.
2. a kind of big diameter balanced stop valve according to claim 1, it is characterized in that: the Placement of described valve rod and flap is: the cross section of described valve rod lower end edge long axis direction is T-shaped, in the middle part of secondary flap, there is the T-slot that supplies valve rod lower end nested arrangements, there is in the middle part of described main valve clack a cavity be slidably matched for secondary flap, described cavity sidewalls arranges intake chute, lower end arranges a through hole B, and described valve clack cover is arranged on main valve clack upper end, and nested arrangements is in cavity.
3. a kind of big diameter balanced stop valve according to claim 2, is characterized in that: the height of described secondary flap is less than the height between intake chute upper end and valve clack cover bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520936451.6U CN205226386U (en) | 2015-11-23 | 2015-11-23 | Heavy -calibre balanced type stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520936451.6U CN205226386U (en) | 2015-11-23 | 2015-11-23 | Heavy -calibre balanced type stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226386U true CN205226386U (en) | 2016-05-11 |
Family
ID=55901453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520936451.6U Active CN205226386U (en) | 2015-11-23 | 2015-11-23 | Heavy -calibre balanced type stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226386U (en) |
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2015
- 2015-11-23 CN CN201520936451.6U patent/CN205226386U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |