CN202252038U - Pneumatic stop valve - Google Patents
Pneumatic stop valve Download PDFInfo
- Publication number
- CN202252038U CN202252038U CN2011203602419U CN201120360241U CN202252038U CN 202252038 U CN202252038 U CN 202252038U CN 2011203602419 U CN2011203602419 U CN 2011203602419U CN 201120360241 U CN201120360241 U CN 201120360241U CN 202252038 U CN202252038 U CN 202252038U
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- Prior art keywords
- valve
- valve rod
- rod
- piston cylinder
- valve body
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- Expired - Fee Related
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Abstract
The utility model discloses a pneumatic stop valve which comprises a valve body, wherein the valve body is provided with a valve cavity extending vertically; the valve cavity is internally provided with a valve rod which can move vertically; the bottom end of the valve rod is provided with a valve core; the valve body is provided with a valve base; a piston cylinder driving device which is used for driving the valve rod to move downwards is arranged above the valve body; the piston cylinder driving device comprises a piston cylinder and a piston which is assembled in the piston cylinder and moves vertically; the valve rod is of a separated type structure; the separated type valve rod comprises a upper valve rod which is assembled in the piston cylinder and in transmission connection with the piston and a lower valve rod which is assembled in the valve cavity in a moving mode and is fixedly connected with the valve core; the lower end of the upper valve rod downwards extends out of the piston cylinder; the upper end of the lower rod upwards extends out of the valve body; the upper and the lower valve rods are arranged coaxially; and the upper and the lower valve rods are connected into an integrated structure in a dismountable mode through the middle connection part. The valve rod is designed into a separated type structure, which is convenient for the long-distance transport of the pneumatic stop valve and reduces the transport cost.
Description
Technical field
The utility model belongs to the pneumatic apparatus technical field, is specifically related to a kind of pneumatic cut-off valve.
Background technique
Pneumatic cut-off valve is a pneumatic apparatus important in the industrial production automation equipment; According to equipment requirements, make flowing medium (liquid, gas or the steam) proper flow in the fluid passage or break off to satisfy the parameter request of equipment to pressure, temperature or flow.
For in the Chinese utility model patent specification of CN22877240Y a kind of pneumatic cut-off valve is disclosed at notice of authorization number; This pneumatic cut-off valve comprises valve body; Move along the vertical direction in the valve body and be equipped with a valve rod; The lower end of valve rod is provided with spool, and in being provided with upper valve base above the spool, below spool, being provided with lower valve base, valve rod drives spool and moves up and down and realize closing and opening of pneumatic cut-off valve in valve body; Be supported with in the roof anchorage of valve body and be used for the drive unit that actuate valve stem moves up and down; This drive unit comprises cylinder, in cylinder block, is provided with the flexible sheet that the cylinder block inner chamber is separated into two cavitys that are not connected, and the upper cavity of cylinder block is connected with the high voltage power source of the gas through suction port; The top of valve rod is stretched in the lower chamber of cylinder block; Have one on the top of valve rod and be used for the dish type roof pressure end of roof pressure on the flexible sheet lower end surface, between the gentle inboard wall of cylinder block of dish type roof pressure end of valve rod, be provided with the Returnning spring that extends along the guide direction of valve rod bearing of trend in the lower cavity of cylinder block, an end roof pressure of Returnning spring on the dish type roof pressure end of valve rod, the other end roof pressure is on the cylinder block inwall.When not when injecting high pressure air during suction port is in upper cavity; Under action of reset spring, will promote valve rod and move up spool roof pressure until the valve rod lower end on upper valve base, pneumatic cut-off valve is closed, when in upper cavity, injecting high pressure air through suction port; High pressure air will promote valve rod through the active force that flexible sheet overcomes Returnning spring and move down; Valve rod drives spool and moves down, when spool and upper valve base are separated, and the pneumatic cut-off valve unlatching.
But the valve rod axial length of above-mentioned pneumatic cut-off valve is longer, adds the cylinder that is positioned at the valve body top, and this makes that the overall volume of pneumatic cut-off valve is bigger, and very inconvenient when the transportation assembling, cost of transportation is higher, and the transportation that influences pneumatic cut-off valve is used.
The model utility content
The purpose of the utility model is to provide a kind of less pneumatic cut-off valve of back volume that splits, to solve the technical problem of pneumatic cut-off valve transportation inconvenience in the existing technology.
For realizing above-mentioned purpose, the utility model adopts following technological scheme: a kind of pneumatic cut-off valve comprises valve body; Valve body is provided with the valve pocket that extends along the vertical direction; Move up and down in the valve pocket and be equipped with valve rod, the valve rod bottom is provided with spool, and valve body is provided with valve seat; The valve body top also is provided with and is used for the piston cylinder drive unit that actuate valve stem moves down; This piston cylinder drive unit comprises piston cylinder and moves the piston in the assembling piston cylinder along the vertical direction, and it is characterized in that: described valve rod is a split-type structural, and split type valve rod comprises moving and is assemblied in the upper valve rod that is connected with piston drive in the piston cylinder and is assemblied in lower valve rod in the valve pocket and that be connected with spool with mobile; The lower ends downward of upper valve rod is extended piston cylinder; The upper end of lower valve rod extends upward out the valve pocket of valve body, and the coaxial setting of last lower valve rod is integrative-structure through the removable connection of middle interconnecting piece between the last lower valve rod.
Described middle interconnecting piece comprises connecting rod; This pitman shaft to two ends be equipped with external thread section; One end of said connecting rod is set with contiguous block; And be connected with at the threaded one end that is set with contiguous block and be used to the attaching nut that prevents that contiguous block from deviating from from this end; The bottom of said upper valve rod and a wherein place in the top of lower valve rod be provided with connecting rod on interior threaded hole, another place of the corresponding scyewed joint of external thread section be provided with the counterbore that is used to hold an end that is installed with the attaching nut on the contiguous block, the place that is provided with counterbore in the bottom of said upper valve rod and the top of lower valve rod has and is used for and the fixing welding ends of contiguous block welding.
The lower end of described connecting rod is fixedly connected with the lower valve rod screw thread; The upper end of connecting rod is arranged in the counterbore by the upper valve rod bottom; Be the upper limit structure that is used to act on the connecting rod at the bottom of the counterbore hole of upper valve rod, it is the lower limit structure that is used to act on the connecting rod that the welding of upper valve rod bottom is fixedly coupled piece.
Described middle interconnecting piece is provided with and is used for preventing that introduced contaminants from getting into the dust board of valve body from the valve pocket cooperation place of lower valve rod and valve body.
The beneficial effect of the utility model is: the valve rod in the pneumatic cut-off valve that the utility model provided adopts split-type structural, is made up of the coaxial setting of last lower valve rod upper valve rod, lower valve rod and middle interconnecting piece; Upper valve rod and piston cylinder are integrally formed structure, and lower valve rod and valve body are integrally formed structure, when transportation; From middle joint valve rod is taken apart, whole pneumatic cut-off valve splits into the two large divisions, convenient transportation; When being transported to the destination; To go up through middle interconnecting piece again that lower valve rod is coaxial to be fixedly connected, again piston cylinder and valve body linked together, accomplish assembling.Valve rod is designed to split formula structure, has made things convenient for the long-distance transport of pneumatic cut-off valve, reduced cost of transportation.
Description of drawings
Fig. 1 is a kind of embodiment's of the pneumatic cut-off valve that provides of the utility model a structural representation;
Fig. 2 is an A place enlarged view among Fig. 1.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of embodiment of pneumatic cut-off valve, the pneumatic cut-off valve among this embodiment comprises valve body 3, in valve body 3, is provided with the valve pocket 11 that extends along the vertical direction; In valve pocket 11, move up and down and be equipped with valve rod 4; Valve rod 4 extends along the vertical direction, fixedly is equipped with spool 6 in the lower end of valve rod 4, in valve body, above spool, is provided with to be used for the corresponding upper valve base that is sealed and matched 31 with spool top; In valve body, below spool, be provided with and be used for the corresponding lower valve base that is sealed and matched 32 with the spool bottom, spool moves up and down under the drive of valve rod and realizes starting the switching of the keying state of cut-off valve; Valve body 3 be provided with the piston cylinder drive unit; This piston cylinder drive unit is supported and fixed on the piston cylinder 10 at valve body top, is provided with the piston 1 that slides along the vertical direction in the piston cylinder 10, and piston 1 is separated into upper cavity and the lower chamber that is not connected with the inner chamber of piston cylinder; Piston cylinder is provided with the suction port 8 that is connected with upper cavity; In the lower chamber of piston cylinder 10, be provided with the Returnning spring 9 that is used for applying to valve rod the active force that moves up that guide direction is along the vertical direction extended, Returnning spring is between piston and piston cylinder, and the upper end roof pressure of Returnning spring is on the lower end surface of piston, on the internal face of its lower end roof pressure at piston cylinder; The top of said valve rod stretches in the piston cylinder; The top of valve rod and piston are removable to be fixedly connected, and valve rod is driven along the vertical direction by piston and moves, and the valve rod in the present embodiment is a split-type structural; Valve rod 4 is made up of the lower valve rod 42 and the middle interconnecting piece 2 that the removable connection of lower valve rod is one of will going up between piston cylinder and valve body that move the upper valve rod 41 be assemblied in the piston cylinder, move in the valve pocket that is assemblied in valve body; The coaxial setting of last lower valve rod, and middle interconnecting piece 2 is provided with and is used for preventing that introduced contaminants from getting into the dust board 12 of valve body from the valve pocket cooperation place of lower valve rod and valve body, in the present embodiment; Described middle interconnecting piece 2 comprises connecting rod 21; The outer circumferential face at the axial two ends of connecting rod 21 is provided with external thread section, offers at the top of lower valve rod 42 along the axially extended interior threaded hole 420 that is used for the external thread section screw-thread fit of connecting rod of valve rod, and the top of connecting rod 21 is set with contiguous block 23; On the thread section on connecting rod 21 tops, be installed with and be used to the attaching nut 22 that prevents that contiguous block from deviating from from connecting rod; Offer counterbore 410 in the bottom of upper valve rod 41, the bottom of upper valve rod 41 have be used for connecting rod on the fixing welding ends of contiguous block welding, during assembling; The upper end that has attaching nut 22 of connecting rod 21 is stretched in the counterbore; The welding ends welding of contiguous block and upper valve rod is fixed, and the lower thread section spinning of connecting rod 21 is gone in the interior threaded hole 420 at lower valve rod top, lower valve rod is fixedly connected in the realization.Be provided with the thrust flanges of evagination at the middle part of connecting rod; Described dust board is sleeved on the connecting rod; And be pressed abd fixed on the thrust flanges by the packing ring, the set screw nut that are assemblied on the connecting rod; The upper end of connecting rod is arranged in the counterbore by the upper valve rod bottom, is the upper limit structure that is used to act on the connecting rod at the bottom of the counterbore hole of upper valve rod, and it is the lower limit structure that is used to act on the connecting rod that the welding of upper valve rod bottom is fixedly coupled piece.
When the pneumatic cut-off valve that is provided in the foregoing description is worked, when in upper cavity, not injecting pressurized gas, under the effect of Returnning spring 9 through suction port 8; Returnning spring 9 will promote piston 1 and drive valve rod 4 and move up, and when valve rod 4 drove spools 6 and moves to spool 6 and be sealed and matched with upper valve base 31, pneumatic cut-off valve was closed; When in upper cavity, injecting high pressure air through suction port; High pressure air overcomes the active force that makes progress that Returnning spring applies piston and valve rod, and piston drives valve rod and moves down under the impetus of high pressure air, and valve rod will drive spool and move down; Spool and upper valve base are separated, and pneumatic cut-off valve is opened.
Valve rod in the foregoing description is a split-type structural; It is connected to form by upper valve rod 41, middle interconnecting piece 2 and lower valve rod 42; When transportation, valve rod is split, the piston cylinder that has upper valve rod like this is divided into two parts with the valve body that has lower valve rod; Two-part volume is just little a lot of with respect to the overall volume of pneumatic cut-off valve, is convenient to the transportation assembling.And dust board is set on valve rod, the impurity that can effectively place in the surrounding environment gets in the valve pocket.
In the above-described embodiments; Upper valve rod connects with piston thread, in other embodiments, also can the top design of upper valve rod be become as existing disk-shaped structure of the prior art; And by Returnning spring with the disk-shaped structure roof pressure of upper valve rod on the lower end surface of piston; Upper valve rod and piston are synchronization motion equally, perhaps through a plurality of bolts with the disk-shaped structure of upper valve rod with or piston be fixedly connected and press, can realize the synchronization motion of upper valve rod and piston equally.
In the above-described embodiments; Being used for fixing the middle interconnecting piece that connects last lower valve rod mainly is made up of connecting rod, contiguous block and attaching nut; And the top of lower valve rod is provided with interior threaded hole and counterbore is set in the bottom of upper valve rod; Also adopt following structure in other embodiments: the bottom at upper valve rod is provided with interior threaded hole, and at the top of lower valve rod counterbore is set, and the screw top spinning of connecting rod is gone in the upper valve rod; And an end that has the attaching nut of connecting rod is stretched in the top counterbore of lower valve rod, contiguous block and lower valve rod welding is fixing.Also can will go up lower valve rod through other connecting mode is fixedly connected; As between last lower valve rod, coupling sleeve being set, internal thread segment being set respectively on the internal face at the axial two ends of coupling sleeve, and being provided for the external thread section with the corresponding screw-thread fit of internal thread segment of coupling sleeve on the top of the bottom of upper valve rod and lower valve rod; Cooperation through the internal and external threads section realizes going up being fixedly connected of lower valve rod; When adopting coupling sleeve, can also on the internal face of coupling sleeve upper end, internal thread segment be set, and external thread section is set on the outer circumferential face of coupling sleeve lower end; At this moment; Corresponding, in the bottom of upper valve rod external thread section is set, at the top of lower valve rod internal thread segment is set then.
Claims (4)
1. a pneumatic cut-off valve comprises valve body, and valve body is provided with the valve pocket that extends along the vertical direction; Move up and down in the valve pocket and be equipped with valve rod, the valve rod bottom is provided with spool, and valve body is provided with valve seat; The valve body top also is provided with and is used for the piston cylinder drive unit that actuate valve stem moves down; This piston cylinder drive unit comprises piston cylinder and moves the piston in the assembling piston cylinder along the vertical direction, and it is characterized in that: described valve rod is a split-type structural, and split type valve rod comprises moving and is assemblied in the upper valve rod that is connected with piston drive in the piston cylinder and is assemblied in lower valve rod in the valve pocket and that be connected with spool with mobile; The lower ends downward of upper valve rod is extended piston cylinder; The upper end of lower valve rod extends upward out the valve pocket of valve body, and the coaxial setting of last lower valve rod is integrative-structure through the removable connection of middle interconnecting piece between the last lower valve rod.
2. pneumatic cut-off valve according to claim 1; It is characterized in that: described middle interconnecting piece comprises connecting rod; This pitman shaft to two ends be equipped with external thread section; One end of said connecting rod is set with contiguous block; And be connected with at the threaded one end that is set with contiguous block and be used to the attaching nut that prevents that contiguous block from deviating from from this end; The bottom of said upper valve rod and a wherein place in the top of lower valve rod be provided with connecting rod on interior threaded hole, another place of the corresponding scyewed joint of external thread section be provided with the counterbore that is used to hold an end that is installed with the attaching nut on the contiguous block, the place that is provided with counterbore in the bottom of said upper valve rod and the top of lower valve rod has and is used for and the fixing welding ends of contiguous block welding.
3. pneumatic cut-off valve according to claim 2; It is characterized in that: the lower end of described connecting rod is fixedly connected with the lower valve rod screw thread; The upper end of connecting rod is arranged in the counterbore by the upper valve rod bottom; Be the upper limit structure that is used to act on the connecting rod at the bottom of the counterbore hole of upper valve rod, it is the lower limit structure that is used to act on the connecting rod that the welding of upper valve rod bottom is fixedly coupled piece.
4. according to claim 1 or 2 or 3 described pneumatic cut-off valves, it is characterized in that: described middle interconnecting piece is provided with and is used for preventing that introduced contaminants from getting into the dust board of valve body from the valve pocket cooperation place of lower valve rod and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203602419U CN202252038U (en) | 2011-09-23 | 2011-09-23 | Pneumatic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203602419U CN202252038U (en) | 2011-09-23 | 2011-09-23 | Pneumatic stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252038U true CN202252038U (en) | 2012-05-30 |
Family
ID=46113281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203602419U Expired - Fee Related CN202252038U (en) | 2011-09-23 | 2011-09-23 | Pneumatic stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410987A (en) * | 2013-07-01 | 2013-11-27 | 长春北方仪器设备有限公司 | Abrasion-free and leakage-free flow-controlling valve device and flow-controlling method thereof |
| CN108662269A (en) * | 2018-07-14 | 2018-10-16 | 温州市欧睿阀门有限公司 | A kind of valve of accurate water conservancy diversion |
-
2011
- 2011-09-23 CN CN2011203602419U patent/CN202252038U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410987A (en) * | 2013-07-01 | 2013-11-27 | 长春北方仪器设备有限公司 | Abrasion-free and leakage-free flow-controlling valve device and flow-controlling method thereof |
| CN108662269A (en) * | 2018-07-14 | 2018-10-16 | 温州市欧睿阀门有限公司 | A kind of valve of accurate water conservancy diversion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130923 |