CN203297727U - Stop valve - Google Patents

Stop valve Download PDF

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Publication number
CN203297727U
CN203297727U CN2013203242431U CN201320324243U CN203297727U CN 203297727 U CN203297727 U CN 203297727U CN 2013203242431 U CN2013203242431 U CN 2013203242431U CN 201320324243 U CN201320324243 U CN 201320324243U CN 203297727 U CN203297727 U CN 203297727U
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CN
China
Prior art keywords
valve
air
pressure chamber
rod
stop
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.)
Active
Application number
CN2013203242431U
Other languages
Chinese (zh)
Inventor
陈润福
李尧善
林亮
林山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI HUHANG VALVES CO Ltd
Original Assignee
SHANGHAI HUHANG VALVES CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHANGHAI HUHANG VALVES CO Ltd filed Critical SHANGHAI HUHANG VALVES CO Ltd
Priority to CN2013203242431U priority Critical patent/CN203297727U/en
Application granted granted Critical
Publication of CN203297727U publication Critical patent/CN203297727U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a stop valve which comprises a valve body, a valve cover and a valve rod. The top portion of the valve rod is connected with the top end cover on the valve cover, and the bottom portion of the valve rod is connected with a valve clack on the valve body. The stop valve is characterized in that an air cylinder connecting disc is arranged in the middle of the valve rod, the upper face and the lower face of the air cylinder connecting disc are connected with the bottom portion of the valve cover and the upper portion of the valve body respectively through screws, the upper portion of the valve rod is further sleeved with an air cylinder piston, the air cylinder piston divides the internal space of the valve cover into an upper air pressure chamber and a lower air pressure chamber, a first anti-collision gasket is arranged at the upper end of the air cylinder piston and inside the upper air pressure chamber, and a second anti-collision gasket is arranged at the upper end of the air cylinder connecting disc and inside the lower air pressure chamber. Compared with existing products, through the anti-collision gaskets on the air cylinder connecting disc and the air cylinder piston, the stop valve enables the maintenance to be reduced, the service life is prolonged, using cost is lowered, the structure is simple, practicality is achieved, and the aim of the stop valve is achieved.

Description

A kind of stop valve
Technical field
The utility model relates to a kind of valve, particularly a kind of stop valve.
Background technique
Stop valve claims again the pipe valve valve, belongs to forced seal formula valve,, so when valve closing, must exert pressure to flap, with forced seal face, does not leak.
Existing stop valve as shown in Figure 1, generally comprises valve body 1, valve gap 2 and valve rod; Described valve rod comprises that top is connected with the upper valve rod 3 of motion stops 7 and bottom and is connected to lower valve rod 4 on the flap 8 that coordinates with valve body 1, and the bottom of described upper valve rod 3 is connected with the top of lower valve rod 4; Described upper valve rod 3 middle parts are socketed with the upper barrier film lobe 5 that is connected with valve gap 2 bottoms, and described lower valve rod 4 middle parts are socketed with the lower diaphragm plate lobe 6 that is connected with valve body 1 top.Need motion stops moving up and down when working when stop valve, will be with motion stops toward rising when opening valve; Will be with motion stops toward descending in throttle down, motion stops is upwards held and is encountered the valve gap top or encounter upper barrier film lobe downwards very much like this, easily causes the damage of stop valve, increases maintenance cost.
The model utility content
The purpose of this utility model is to provide a kind of stop valve, to solve when cylinder piston moves the problem that causes damage.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of stop valve, it comprises valve body, valve gap and valve rod; The top of described valve rod is connected with top end cover on valve gap, and the bottom of described valve rod is connected with the flap on valve body; It is characterized in that, the middle part of described valve rod is provided with the cylinder land, the upper and lower surface of described cylinder land is connected by screw with the bottom of valve gap and the top of valve body respectively, the top of described valve rod also is socketed with cylinder piston, described cylinder piston is divided into upper air-pressure chamber and lower air-pressure chamber with the valve gap inner space, described cylinder piston upper end is positioned at air-pressure chamber and is provided with the first anti-collision packing ring, and described cylinder land upper end is positioned at lower air-pressure chamber and is provided with the second anti-collision packing ring.
In an embodiment of the present utility model, described cylinder piston is positioned on valve rod and by locking device and is fixed on valve rod by ladder surface.
In an embodiment of the present utility model, described screw for cylinder land and valve body are connected with valve gap is interior hexagonal cylindrical screw.
In an embodiment of the present utility model, the top of described valve gap is provided with lifting bolt.
In an embodiment of the present utility model, described valve rod is provided with stuffing box gland with the side that the cylinder land contacts.
In an embodiment of the present utility model, described locking device is locking nut.
In an embodiment of the present utility model, also be provided with solenoid valve on described valve gap, described solenoid valve is connected with upper air-pressure chamber, and described solenoid valve is connected with lower air-pressure chamber by the valve pipe.
In an embodiment of the present utility model, also be provided with the material mouth on described valve body.
A kind of stop valve of the present utility model, compare with present product, by the anti-collision packing ring on cylinder land and cylinder piston, can reduce the maintenance of stop valve, increase working life, reduce user cost, simple in structure, very practical, realize the purpose of this utility model.
Characteristics of the present utility model can be consulted the detailed description of the graphic and following better mode of execution of this case and be obtained to be well understood to.
Description of drawings
Fig. 1 is the structural representation of a kind of stop valve in prior art.
Fig. 2 is the structural representation of a kind of stop valve of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, further set forth the utility model below in conjunction with specific embodiment.
As shown in Figure 2, a kind of stop valve of the present utility model, it comprises valve body 10, valve gap 20 and valve rod 30; The top of described valve rod 30 is connected with top end cover 21 on valve gap 20, and the bottom of described valve rod 30 is connected with the flap 11 on valve body 10; The middle part of described valve rod 30 is provided with cylinder land 40, and the side that described valve rod 30 contacts with cylinder land 40 is provided with stuffing box gland 41; The upper and lower surface of described cylinder land 40 is connected by interior hexagonal cylindrical screw 50 with the top of being connected with valve body in the bottom of valve gap 20 respectively, the top of described valve rod 30 also is socketed with cylinder piston 31, described cylinder piston 31 is divided into upper air-pressure chamber 22 and lower air-pressure chamber 23 with the valve gap inner space, also be provided with solenoid valve 60 on described valve gap 20, described solenoid valve 60 is connected with upper air-pressure chamber 22, and described solenoid valve 60 is connected with lower air-pressure chamber 23 by valve pipe 61.Described cylinder piston 31 is positioned on valve rod 30 and by locking nut 33 and is fixed on valve rod 30 by ladder surface 32, described cylinder piston 31 upper ends are positioned at air-pressure chamber 22 and are provided with the first anti-collision packing ring 33, described cylinder land 40 upper ends are positioned at lower air-pressure chamber 23 and are provided with the second anti-collision packing ring 42, and the general elasticity resistant material teflon that adopts of described the first anti-collision packing ring 33 and the second anti-collision packing ring 42 is made.
In the utility model, also be provided with lifting bolt 24 on described valve gap.
In the utility model, also be provided with material mouth 12 on described valve body, use with gas communication for liquid.
A kind of stop valve in the utility model, draught head band ovable valve stem 30 motions by in upper air-pressure chamber 22 and lower air-pressure chamber 23, make stop valve work.During greater than the air pressure in lower air-pressure chamber 23, upper air-pressure chamber 22 internal air pressures promote cylinder pistons 31 moves downward valve rod when the air pressure in upper air-pressure chamber 22, and the flap 11 that valve rod 30 bottoms connect will be sealed up material mouth 12, and stop valve quits work; During less than the air pressure in lower air-pressure chamber 23, lower air-pressure chamber 23 internal air pressures promote cylinder pistons 31 moves upward valve rod when the air pressure in upper air-pressure chamber 22, and the flap 11 that valve rod 30 bottoms connect will leave material mouth 12, and stop valve is started working.
Above demonstration and described basic principle of the present utility model, major character and advantage of the present utility model.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 is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.

Claims (8)

1. stop valve, it comprises valve body, valve gap and valve rod; The top of described valve rod is connected with top end cover on valve gap, and the bottom of described valve rod is connected with the flap on valve body; It is characterized in that, the middle part of described valve rod is provided with the cylinder land, the upper and lower surface of described cylinder land is connected by screw with the bottom of valve gap and the top of valve body respectively, the top of described valve rod also is socketed with cylinder piston, described cylinder piston is divided into upper air-pressure chamber and lower air-pressure chamber with the valve gap inner space, described cylinder piston upper end is positioned at air-pressure chamber and is provided with the first anti-collision packing ring, and described cylinder land upper end is positioned at lower air-pressure chamber and is provided with the second anti-collision packing ring.
2. a kind of stop valve according to claim 1, is characterized in that, described cylinder piston is positioned on valve rod and by locking device and is fixed on valve rod by ladder surface.
3. a kind of stop valve according to claim 1, is characterized in that, described screw for cylinder land and valve body are connected with valve gap is interior hexagonal cylindrical screw.
4. a kind of stop valve according to claim 1, is characterized in that, the top of described valve gap is provided with lifting bolt.
5. a kind of stop valve according to claim 1, is characterized in that, described valve rod is provided with stuffing box gland with the side that the cylinder land contacts.
6. a kind of stop valve according to claim 1, is characterized in that, described locking device is locking nut.
7. a kind of stop valve according to claim 1, is characterized in that, also is provided with solenoid valve on described valve gap, and described solenoid valve is connected with upper air-pressure chamber, and described solenoid valve is connected with lower air-pressure chamber by the valve pipe.
8. a kind of stop valve according to claim 1, is characterized in that, also is provided with the material mouth on described valve body.
CN2013203242431U 2013-06-06 2013-06-06 Stop valve Active CN203297727U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203242431U CN203297727U (en) 2013-06-06 2013-06-06 Stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203242431U CN203297727U (en) 2013-06-06 2013-06-06 Stop valve

Publications (1)

Publication Number Publication Date
CN203297727U true CN203297727U (en) 2013-11-20

Family

ID=49573734

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013203242431U Active CN203297727U (en) 2013-06-06 2013-06-06 Stop valve

Country Status (1)

Country Link
CN (1) CN203297727U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240551A (en) * 2015-11-02 2016-01-13 苏州市淞舜五金有限公司 Fixed anti-collision valve rod
CN105240556A (en) * 2015-11-02 2016-01-13 苏州市淞舜五金有限公司 Fixed lubricating anti-collision valve rod
CN105387264A (en) * 2015-11-02 2016-03-09 苏州市淞舜五金有限公司 Fixed damping valve rod

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240551A (en) * 2015-11-02 2016-01-13 苏州市淞舜五金有限公司 Fixed anti-collision valve rod
CN105240556A (en) * 2015-11-02 2016-01-13 苏州市淞舜五金有限公司 Fixed lubricating anti-collision valve rod
CN105387264A (en) * 2015-11-02 2016-03-09 苏州市淞舜五金有限公司 Fixed damping valve rod

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