CN203686201U - Executing mechanism lower position limiting regulating device for wedge type brake valve - Google Patents
Executing mechanism lower position limiting regulating device for wedge type brake valve Download PDFInfo
- Publication number
- CN203686201U CN203686201U CN201320738978.9U CN201320738978U CN203686201U CN 203686201 U CN203686201 U CN 203686201U CN 201320738978 U CN201320738978 U CN 201320738978U CN 203686201 U CN203686201 U CN 203686201U
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- valve
- position limiting
- regulating device
- bolt
- type brake
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Abstract
The utility model relates to an executing mechanism lower position limiting regulating device for a wedge type brake valve. The executing mechanism lower position limiting regulating device comprises a connecting support frame, a position limiting baffle plate, a regulating screw bolt and a tightening screw nut, and is characterized in that the bottom of the connecting support frame is provided with a threaded hole for a regulating screw bolt, the position limiting baffle plate is arranged on a valve rod through screw threads in a matched way and is fastened at the lower end of a connecting Hough, the regulating screw bolt is arranged on the connecting support frame through screw threads in a matched way, the head part of the screw bolt is propped and pressed under the position limiting baffle plate, the other end passes through a middle head connecting flange of the wedge type brake valve, and the tightening screw nut and the regulating screw bolt are connected and fastened on the connecting support frame through screw threads. The executing mechanism lower position limiting regulating device has the advantages that the phenomenon that the wedge type brake valve cannot be normally opened due to the tight closing is avoided, the structure is simple, reliability and practicability are realized, and the normal opening and closing stability of the valve is ensured. The sealing surface of a valve seat and a brake plate of the wedge type brake valve can be effectively protected, the maintenance and repair frequency of the valve is reduced, and the service life is prolonged.
Description
Technical field
The utility model relates to a kind of actuator lower limit regulating device, specifically relates to a kind of Wedge gate valve actuator lower limit regulating device, belongs to control valve for fluids field.
Background technique
Gate valve is divided into single-shutter gate valve, double-flashboard gate valve and Flexible disc gate valve etc. by structural principle, is one the most common in all valves, is the first-selected valve kind while making start-stop device in general primary branch road, and in the total amount of valve, proportion exceedes 40%.And most of gate valves all adopt wedge-type structure, its sealing principle is: under the External Force Acting providing in actuator etc., when driving two sealing surfaces wedging on two sealing surfaces and the valve body on wedge shape flashboard, valve rod combines closely to reach sealing, using the object of wedge shaped plate is in order to improve auxiliary seal load, so that gate valve can be applicable to the occasions such as the high temperature media of sewage, oil product, low-temperature deep and easily coking.
In practical application, under the External Force Acting providing in actuator, flashboard for sluice valve moves downward, wedge-type structure easily causes because driving force is excessive closes excessively, add under the effect of high-temperature high-pressure medium, cause the distortion of the sealing such as flashboard, valve seat component, while causing opening, the moment tripping force of needs is multiplied several times when normally working, often occurs that valve cannot be opened or the phenomenon such as startup hysteresis.This has not only affected normal switch needs, has also aggravated the wearing and tearing of sealing surface, causes valve leak, has greatly shortened the working life of valve.
Summary of the invention
The purpose of this utility model is to overcome the deficiency in above-mentioned technology, thus provide a kind of simple and practical,
Actuator's lower limit regulating device for safe and reliable Wedge gate valve.
The technological scheme providing according to the utility model, Wedge gate valve comprises connection bracket, postive stop baffle, adjustment bolt and fastening screw nut with actuator's lower limit regulating device; Feature is: the bottom of described connection bracket is with adjusting bolt tapped hole, described postive stop baffle is arranged on valve rod by screw-thread fit, be fastened on and connect Hough lower end, described adjustment bolt is arranged in connection bracket by screw-thread fit, bolt head top is pressed under postive stop baffle, the other end is through an adpting flange in Wedge gate valve, and described fastening screw nut is connected and is fastened in connection bracket with adjustment bolt thread.
As further improvement of the utility model, one end that described connection bracket is connected with Wedge gate valve is with adjusting bolt tapped hole.
As further improvement of the utility model, the middle head flange of described Wedge gate valve is with the bolt hole for adjusting bolt fine setting.
The utility model prior art is compared and is had the following advantages:
1, avoided Wedge gate valve to cause because closing tension the phenomenon that cannot normally open, simple in structure, reliable and practical, guarantee the normal stability opening and closing of valve.
2, can effectively protect the sealing surface of Wedge gate valve flashboard and valve seat, reduce the maintenance and repair frequency of valve, extend working life.
3,, after valve uses sealing surface normal wear to cause leaking for a long time, the described adjustment bolt of equidistant fine setting downwards, can realize sealing again.
Accompanying drawing explanation
Fig. 1 is that structure of the present utility model is used view.
Fig. 2 is the partial schematic diagram at A place in Fig. 1.
Fig. 3 is the plan view of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described in detail.
As shown in Figure 1-Figure 3, Wedge gate valve comprises connection bracket 1, postive stop baffle 2, adjusts bolt 3 and fastening screw nut 4 with actuator's lower limit regulating device.
Connection bracket described in the utility model 1 bottom, except processing the indispensable bolt hole being connected with gate valve, also needs to process two and adjusts bolt tapped hole; Described postive stop baffle 2 is arranged on valve rod by screw-thread fit, is fastened on and connects Hough lower end; Described adjustment bolt 3 is arranged in connection bracket 1 by screw-thread fit, valve is run to closed position (needn't shut completely) by ventilation, the head top of adjusting bolt 3 is pressed in to postive stop baffle 2 times, play position-limiting action, the other end is through an adpting flange in Wedge gate valve, bolts 3 are adjusted in two of equidistant adjustment downwards again, until valve is closed completely, meet leakage class requirement; Described fastening screw nut 4 is threaded and is fastened in connection bracket 1 with adjustment bolt 3, plays locking effect; The middle head flange of Wedge gate valve, also need be with adjusting bolt hole, while fine setting for adjustment bolt 3 except indispensable connecting thread hole.
After valve uses sealing surface normal wear to cause leaking for a long time, the described adjustment bolt 3 of equidistant fine setting downwards, can realize sealing again, has extended the working life of valve.
Claims (3)
1. actuator's lower limit regulating device for Wedge gate valve, is characterized in that: comprise connection bracket (1), postive stop baffle (2), adjust bolt (3) and fastening screw nut (4); The bottom of described connection bracket (1) is with adjusting bolt tapped hole, described postive stop baffle (2) is arranged on valve rod by screw-thread fit, be fastened on and connect Hough lower end, described adjustment bolt (3) is arranged in connection bracket (1) by screw-thread fit, bolt head top is pressed under postive stop baffle (2), the other end is through an adpting flange in Wedge gate valve, and (4 are threaded and are fastened in connection bracket (1) with adjustment bolt (3) described fastening screw nut.
2. actuator's lower limit regulating device for Wedge gate valve as claimed in claim 1, is characterized in that: one end that described connection bracket (1) is connected with Wedge gate valve is with adjusting bolt tapped hole.
3. actuator's lower limit regulating device for Wedge gate valve as claimed in claim 1, is characterized in that: the middle head flange of described Wedge gate valve is with the bolt hole for adjusting bolt (3) fine setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738978.9U CN203686201U (en) | 2013-11-20 | 2013-11-20 | Executing mechanism lower position limiting regulating device for wedge type brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738978.9U CN203686201U (en) | 2013-11-20 | 2013-11-20 | Executing mechanism lower position limiting regulating device for wedge type brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686201U true CN203686201U (en) | 2014-07-02 |
Family
ID=51008101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320738978.9U Withdrawn - After Issue CN203686201U (en) | 2013-11-20 | 2013-11-20 | Executing mechanism lower position limiting regulating device for wedge type brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603963A (en) * | 2013-11-20 | 2014-02-26 | 无锡智能自控工程股份有限公司 | Executing mechanism lower limiting adjusting device for wedge-type gate valve |
-
2013
- 2013-11-20 CN CN201320738978.9U patent/CN203686201U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603963A (en) * | 2013-11-20 | 2014-02-26 | 无锡智能自控工程股份有限公司 | Executing mechanism lower limiting adjusting device for wedge-type gate valve |
| CN103603963B (en) * | 2013-11-20 | 2016-04-13 | 无锡智能自控工程股份有限公司 | Wedge gate valve actuator's lower limit regulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20160413 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |