CN203442264U - Self-operated check valve - Google Patents
Self-operated check valve Download PDFInfo
- Publication number
- CN203442264U CN203442264U CN201320518094.2U CN201320518094U CN203442264U CN 203442264 U CN203442264 U CN 203442264U CN 201320518094 U CN201320518094 U CN 201320518094U CN 203442264 U CN203442264 U CN 203442264U
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- CN
- China
- Prior art keywords
- valve
- spool
- self
- valve body
- stop valve
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- Expired - Fee Related
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Abstract
The utility model discloses a self-operated check valve which comprises a valve body, a valve cover, a valve element, an electromagnetic valve, an inlet connection pipe assembly and an outlet connection pipe assembly. The valve cover and the valve body are fixed to form a middle cavity. The valve element is in shape of a dumb bell. The valve element is movably installed in the middle cavity and forms a sealed upper cavity with the middle cavity. The bottom face of the valve element forms a sealing pair with a sealing face of the valve body. One end of the inlet connection pipe assembly is connected with an inlet cavity of the valve body and the other end of the inlet connection pipe assembly is connected with the upper cavity through the electromagnetic valve. One end of the outlet connection pipe assembly is connected with an outlet cavity of the valve body and the other end of the outlet connection pipe assembly is connected with the upper cavity through the electromagnetic valve. The area of the upper surface of the valve element is larger than the bearing area of the contact bottom face of the valve element and the inlet cavity. The structure formed by the inlet connection pipe assembly, the outlet connection pipe assembly and the electromagnetic valve of the check valve enables the valve element to be closed and opened under the self pressure of a medium, the number of parts of the check valve is reduced, the overall structure of the check valve is simplified, energy consumption of an executing mechanism is reduced, and therefore the production and operation cost is reduced.
Description
Technical field
The utility model relates to cut-off valve technical field, be specifically related to a kind of by internal structure, realize in pressure balanced automatically control the stop valve of keying.
Background technique
Conventional gas (liquid) program control stop valve is mainly partly comprised of gas (hydraulic pressure) cylinder part, stuffing box holder part, valve body spool, the switching by solenoid valve of the instrument air with pressure of common gas (liquid) program control stop valve or hydraulic oil enter under gas (hydraulic pressure) cylinder of the moving actuator of gas (liquid) (on) chamber promotes piston to upper (lower) motion, piston driving valve rod, valve rod is carried (pushing) spool makes stop valve open or close.The complex structure of these gas (liquid) program control stop valve, processing cost is higher, and equipment when operation needs extra power.
Model utility content
In order to overcome above-mentioned deficiency of the prior art, the self-powering type stop valve that the utility model provides utilizes the pressure-driven spool of medium self, does not need to arrange outside actuator and operates, and simplifies the structure.
In order to reach foregoing invention object, the technological scheme of the self-powering type stop valve that the utility model provides is: comprise valve body and valve gap, form a lumen after together with described valve gap is fixed by screws in valve body; It is characterized in that: also comprise spool, solenoid valve, entrance sleeve assembly and discharge connection assembly, described spool is dumbbell-like shape, and spool is movably arranged in lumen, and the epicoele of the upper end disc of spool and lumen formation one sealing; The bottom surface of spool and the sealing surface of valve body form the sealing pair of a sealed stop valve.
Entrance sleeve assembly one end is connected with the inlet cavity of valve body, and the other end is connected with epicoele by solenoid valve; Discharge connection assembly one end is connected with the outlet cavity of valve body, and the other end is connected with epicoele by solenoid valve; The upper surface area of described spool is greater than the bottom surface bearing area that spool contacts with inlet cavity.
Preferably, described epicoele outside is also installed with a lining, and the upper end disc of spool is positioned at lining.
Preferably, described sleeve outer surface is provided with a step matching with flange on valve body.
The working principle of this self-powering type stop valve: solenoid valve signal disconnects, the conducting of this stop valve, entrance sleeve group is in closed condition, and discharge connection assembly is in opening state, and the power that medium makes progress can realize the unlatching of stop valve; Because the upper surface area of spool is greater than the bottom surface bearing area that spool contacts with inlet cavity, opens solenoid valve makes the conducting of entrance sleeve assembly, close discharge connection assembly, allow import high-pressure medium enter in epicoele, the pressure that spool upper surface is subject to is greater than being stressed of its bottom surface bearing area, can realize closing of stop valve; If there is refluence phenomenon during stop valve conducting, part medium enters in epicoele, the pressure that spool upper surface is subject to be greater than its bottom surface bearing area be stressed realize closing of spool, make this stop valve there is return valve function.
The beneficial effects of the utility model are: the cooperating structure that the entrance sleeve assembly of this self-powering type stop valve, discharge connection assembly and solenoid valve form, make spool under the pressure-acting of medium self, just can realize the opening and closing of spool, gas (hydraulic pressure) cylinder part, the stuffing box cradle portion that the has replaced stop valve of the prior art complicated driving mechanism that grades is realized the opening and closing of spool, the component of stop valve are reduced, simplified stop valve overall structure, reduce the energy consumption of actuator, thereby reduced cost of production; The O-ring seals that stop valve many places arrange can avoid the medium in epicoele to reveal in lumen effectively.
Accompanying drawing explanation
Fig. 1 is the structural representation of self-powering type stop valve.
Wherein, 1, valve body; 2, inlet cavity; 3, sealing surface; 4, outlet cavity; 5, flange; 6, step; 7, spool; 8, lining; 9, screw; 10, valve gap; 11, entrance sleeve assembly; 12, solenoid valve; 13, solenoid valve contiguous block; 14, epicoele; 15, discharge connection assembly; 16, O-ring seals.
Embodiment
As shown in Figure 1, this self-powering type stop valve comprises valve body 1, valve gap 10, spool 7, solenoid valve 12, entrance sleeve assembly 11 and discharge connection assembly 15, and described valve gap 10 forms a lumen after being fixed together by screw 9 with valve body 1; Described spool 7 is dumbbell-like shape, and spool 7 is movably arranged on lumen upper end disc and lining 8, valve gap 10 interior and spool 7 and forms an epicoele 14 sealing; The sealing surface 3 of the bottom surface of spool 7 and valve body 1 forms the sealing pair of a sealed stop valve;
Entrance sleeve assembly 11 one end are connected with the inlet cavity 2 of valve body 1, and the other end is connected with epicoele 14 by solenoid valve 12; Discharge connection assembly 15 one end are connected with the outlet cavity 4 of valve body 1, and the other end is connected with epicoele 14 by solenoid valve 12; The upper surface area of described spool 7 is greater than the bottom surface bearing area that spool 7 contacts with inlet cavity 2.
Medium for fear of epicoele 14 inside communicates with inlet cavity 2 and outlet cavity 4, in epicoele 14 outsides, is also installed with a lining 8, and the upper end disc of spool 7 is positioned at lining 8; Lining 8 outer surfaces are provided with a step 6, and step 6 clamping structure forming that matches with flange 5 on valve body 1 is fixed on lining 8 in lumen.
Medium in epicoele 14 permeates to inlet cavity 2 and outlet cavity 4, affect the sealing of epicoele 14 inside, and then affect the upper surface of spool 7 and the pressure reduction between spool 7 bottom surface bearing areas, on spool 7, end disc outer surface is provided with O-ring seals 16 with end face and valve gap 10 touching positions of the lining 8 internal surface sections of contacting and lining 8.
For fear of medium to the outside seepage of valve body 1, on the surface contacting with valve gap 10 at valve body 1 and solenoid valve contiguous block 13 be provided with O-ring seals 16 with valve gap 10 touching positions.
For the ease of the installation of solenoid valve 12, between solenoid valve 12 and valve gap 10 end faces, be also provided with a solenoid valve contiguous block 13.
This self-powering type stop valve only has 7 one moving elements of spool, and it moves up and down realizes closing and opening of stop valve.The Placement of the solenoid valve of stop valve 12 and entrance sleeve assembly 11 and discharge connection assembly 15 is converted and stop valve can be arranged to open in usual or Normally closed type.
Stop valve open in usual is: when the signal of solenoid valve 12 disconnects, entrance sleeve assembly 11 is closed, and outlet cavity 4 is communicated with epicoele 14.Spool 7 is in opening state under medium active force, and stop valve is in opening state.
Then the working procedure of self-powering type stop valve open in usual is described below:
The conducting of stop valve: make solenoid valve 12 cut-off signals, spool 7 moves upward under the effect of import high-pressure medium power, realizes the conducting of stop valve.
Closing of stop valve: stop valve receives the concentrated of peripheral control unit and controls, after controller is to solenoid valve 12 output electrical signals, these solenoid valve 12 commutation actions, disconnect discharge connection assembly 15, connecting entrance sleeve assembly 11 makes high-pressure inlet medium enter epicoele 14 by the switching of solenoid valve 12, because the compression area of spool 7 upper surfaces is greater than the bottom surface bearing area that spool 7 contacts with inlet cavity 2, thereby making medium try hard to recommend movable valve plug 7 moves downward, allow stop valve close, the sealing pair that spool 7 and sealing surface 3 form guarantees the sealing between spool 7 and valve body 1.
If spool 7 is in enable possition, solenoid valve 12 has disconnected entrance sleeve assembly 11, be switched to outer pipe and take over assembly 15, if now flowing backwards appears in medium, high-pressure medium just can enter epicoele 14 by solenoid valve 12 through discharge connection assembly 15, medium is tried hard to recommend movable valve plug 7 and is moved downward and close stop valve, makes self-powering type stop valve play safety check.
Although by reference to the accompanying drawings the specific embodiment of the present invention is described in detail, should not be construed as the restriction to the protection domain of this patent.In the described scope of claims, the various modifications that those skilled in the art can make without creative work and distortion still belong to the protection domain of this patent.
Claims (8)
1. a self-powering type stop valve, comprises valve body and valve gap, forms a lumen after together with described valve gap is fixed by screws in valve body; It is characterized in that: also comprise spool, solenoid valve, entrance sleeve assembly and discharge connection assembly, described spool is dumbbell-like shape, spool is movably arranged on lumen upper end disc and lumen interior and spool and forms an epicoele sealing; The bottom surface of spool and the sealing surface of valve body form the sealing pair of a sealed stop valve;
Entrance sleeve assembly one end is connected with the inlet cavity of valve body, and the other end is connected with epicoele by solenoid valve; Discharge connection assembly one end is connected with the outlet cavity of valve body, and the other end is connected with epicoele by solenoid valve; The upper surface area of described spool is greater than the bottom surface bearing area that spool contacts with inlet cavity.
2. self-powering type stop valve according to claim 1, is characterized in that: described epicoele outside is also installed with a lining, and the upper end disc of spool is positioned at lining.
3. self-powering type stop valve according to claim 2, is characterized in that: described sleeve outer surface is provided with a step matching with flange on valve body.
4. self-powering type stop valve according to claim 1, is characterized in that: between described solenoid valve and valve gap end face, be also provided with a solenoid valve contiguous block.
5. according to the self-powering type stop valve described in claim 2 or 3, it is characterized in that: the upper end disc of described spool is provided with O-ring seals with the sleeve inner surface section of contacting.
6. self-powering type stop valve according to claim 1, is characterized in that: on the surface that described valve body contacts with valve gap, be provided with O-ring seals.
7. self-powering type stop valve according to claim 5, is characterized in that: the end face of described lining and valve gap touching position are provided with O-ring seals.
8. self-powering type stop valve according to claim 4, is characterized in that: described solenoid valve contiguous block and valve gap touching position are provided with O-ring seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320518094.2U CN203442264U (en) | 2013-08-23 | 2013-08-23 | Self-operated check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320518094.2U CN203442264U (en) | 2013-08-23 | 2013-08-23 | Self-operated check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203442264U true CN203442264U (en) | 2014-02-19 |
Family
ID=50093321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320518094.2U Expired - Fee Related CN203442264U (en) | 2013-08-23 | 2013-08-23 | Self-operated check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203442264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939649A (en) * | 2014-04-03 | 2014-07-23 | 浙江方众阀门有限公司 | Self-operated stop valve |
| CN114396478A (en) * | 2022-02-08 | 2022-04-26 | 国工控股集团有限公司 | Self-operated stop valve |
-
2013
- 2013-08-23 CN CN201320518094.2U patent/CN203442264U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939649A (en) * | 2014-04-03 | 2014-07-23 | 浙江方众阀门有限公司 | Self-operated stop valve |
| CN114396478A (en) * | 2022-02-08 | 2022-04-26 | 国工控股集团有限公司 | Self-operated stop 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: 20140219 Termination date: 20190823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |