CN204267718U - A kind of pneumatic mechanism of anti-whereabouts - Google Patents
A kind of pneumatic mechanism of anti-whereabouts Download PDFInfo
- Publication number
- CN204267718U CN204267718U CN201420593864.4U CN201420593864U CN204267718U CN 204267718 U CN204267718 U CN 204267718U CN 201420593864 U CN201420593864 U CN 201420593864U CN 204267718 U CN204267718 U CN 204267718U
- Authority
- CN
- China
- Prior art keywords
- chamber
- flap
- piston
- gas
- pneumatic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a kind of pneumatic mechanism of anti-whereabouts, comprise cylinder and selector valve.Cylinder piston is provided with in cylinder.Cylinder piston connects piston rod.The internal cavities of cylinder is divided into upper and lower two air chambers by cylinder piston, is respectively upper gas chamber and lower chamber.Upper gas chamber is connected selector valve with lower chamber respectively by tracheae.Between lower chamber and selector valve, pneumatic on-off valve is installed.Pneumatic on-off valve comprises gas control mouth, the first gas port and the second gas port.The gas control mouth of pneumatic on-off valve is connected by tracheae with upper gas chamber.First gas port is connected by tracheae with lower chamber.Second gas port is connected by tracheae with selector valve.The utility model, by installing pneumatic on-off valve between lower chamber and selector valve, is avoided the gas in lower chamber therefore to leak and is caused the not enough weight-drop caused of the lower chamber internal air pressure of cylinder.
Description
Technical field
The utility model relates to pneumatic mechanism.
Background technique
Due to the defect of cylinder and selector valve itself, cause the air of the compression in cylinder air chamber easily to leak, in cylinder air chamber, air leakage causes air pressure not enough, cannot support extension weight on the piston rod, cause weight hang permanent after fall.
Summary of the invention
Problem to be solved in the utility model: prevent the Leakage Gas in cylinder air chamber, avoid weight-drop.
For solving the problem, the scheme that the utility model adopts is as follows:
A pneumatic mechanism for anti-whereabouts, comprises cylinder and selector valve; Cylinder piston is provided with in cylinder; Cylinder piston connects piston rod; The internal cavities of cylinder is divided into upper and lower two air chambers by cylinder piston, is respectively upper gas chamber and lower chamber; Upper gas chamber is connected described selector valve with lower chamber respectively by tracheae; Between described lower chamber and selector valve, pneumatic on-off valve is installed; Pneumatic on-off valve comprises gas control mouth, the first gas port and the second gas port; The gas control mouth of pneumatic on-off valve is connected by tracheae with upper gas chamber; First gas port is connected by tracheae with lower chamber; Second gas port is connected by tracheae with selector valve.
Further, flap chamber and piston cavity is provided with in described pneumatic on-off valve; Described flap chamber connects the first gas port, and inside is provided with flap; Described piston cavity connects gas control mouth, and inside is provided with piston; Described flap chamber and piston cavity are coaxial, are interconnected, between be provided with slide opening; Linkage rod is provided with in described slide opening; The two ends of described linkage rod lay respectively at flap chamber and piston cavity; Described flap and piston are arranged on the two ends of described linkage rod respectively; In described piston cavity, described piston is fixedly connected with linkage rod; The part of described linkage rod in described flap chamber is provided with outer position-arresting card and interior position-arresting card; Described flap is enclosed between the outer position-arresting card of described linkage rod and interior position-arresting card, can slide along described linkage rod; Described flap is frustoconic shape mechanism; The sealing surface consistent with the frustum cone structure of flap is provided with in described flap chamber; Described flap chamber is communicated with the second gas port by described sealing surface middle opening.
Further, described flap or sealing surface are provided with seal ring.
Further, also spring is installed between described piston and the bottom of piston cavity.
Technique effect of the present utility model is as follows: the utility model, by installing pneumatic on-off valve between lower chamber and selector valve, is avoided the gas in lower chamber therefore to leak and caused the not enough weight-drop caused of the lower chamber internal air pressure of cylinder.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the perspective view of the external view of pneumatic on-off valve.
Fig. 3 is the internal structure schematic diagram of pneumatic on-off valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
As shown in Figure 1, a kind of pneumatic mechanism of anti-whereabouts, comprises cylinder 1 and selector valve 2.Cylinder piston 11 is provided with in cylinder 1.Cylinder piston 11 connects piston rod 12.Piston rod 12 passes outside cylinder 1, and bottom can hang weight 99.The internal cavities of cylinder 1 is divided into upper and lower two air chambers by cylinder piston 11, is respectively upper gas chamber 13 and lower chamber 14.Upper gas chamber 13 is connected selector valve 2 with lower chamber 14 respectively by tracheae.Pneumatic on-off valve 3 is installed between lower chamber 14 and selector valve 2.Pneumatic on-off valve 3, comprises gas control mouth 31, first gas port 32 and the second gas port 33.The gas control mouth 31 of pneumatic on-off valve 3 is connected by tracheae with upper gas chamber 13.First gas port 32 is connected by tracheae with lower chamber 14; Second gas port 33 is connected with selector valve 2.Pneumatic on-off valve 3 is an one-way valve under normal circumstances, and air-flow can flow to the first gas port 32 from the second gas port 33, but can not flow to the second gas port 33 from the first gas port 32, now, and automatic blocking when the first gas port 32 flows to the second gas port 33.Pneumatic on-off valve 3, when gas control mouth 31 applies high pressure, must be opened.Namely, when weight 99 needs to move down, upper gas chamber 13 needs inflation, lower chamber 14 needs exhaust, now, gas control mouth 31 pressurized of pneumatic on-off valve 3 causes opening between the first gas port 32 of pneumatic on-off valve 3 and the second gas port 33, and the gas of lower chamber 14 is discharged.When moving on weight 99 needs, lower chamber 14 needs inflation, and upper gas chamber 13 needs exhaust, now, the gas control mouth 31 of pneumatic on-off valve 3 is in normal state, and the air pressure of the second gas port 33 is higher than the air pressure of the first gas port 32, and air-flow can flow to the first gas port 32 from the second gas port 33.When reaching air pressure balance between the first gas port 32, second gas port 33 and gas control mouth 31, pneumatic on-off valve 3 automatic blocking, even if after now selector valve 2 leaks gas, the air pressure of the second gas port 33 is lower than the air pressure of the first gas port 32, due to self-locking action, gas cannot flow to the second gas port 33 from the first gas port 32.
1.it will be appreciated by those skilled in the art that the pneumatic on-off valve realizing above-mentioned functions has a variety of.An embodiment of what Fig. 2, Fig. 3 provided is pneumatic on-off valve.As shown in Figure 2 and Figure 3, pneumatic on-off valve 3 is the tubular bodies with lateral openings.One end of tubular body is the first gas port 32, and the other end is gas control mouth 31, and side opening is the second gas port 33.Flap chamber 4 and piston cavity 5 is provided with in pneumatic on-off valve 3.Flap chamber 4 connects the first gas port 32, and inside is provided with flap 41.Piston cavity 5 connects gas control mouth 31, and inside is provided with piston 51.Flap chamber 4 and piston cavity 5 are coaxial, are interconnected, between be provided with slide opening 6.Linkage rod 61 is provided with in slide opening 6.The two ends of linkage rod 61 lay respectively in flap chamber 4 and piston cavity 5.Flap 41 and piston 51 are arranged on the two ends of linkage rod 61 respectively.In piston cavity 5, piston 51 is fixedly connected with linkage rod 61.Spring 52 is installed between the bottom of piston 51 and piston cavity 5.The part of linkage rod 61 in flap chamber 4 is provided with outer position-arresting card 62 and interior position-arresting card 63.Flap 41 is enclosed between the outer position-arresting card 62 of linkage rod 61 and interior position-arresting card 63, can slide along linkage rod 61.Flap 41 is frustoconic shape mechanism, and the frustum cone side of flap 41 is provided with seal ring 42.The sealing surface 43 consistent with the frustum cone structure of flap 41 is provided with in flap chamber 4.Flap chamber 4 is communicated with the second gas port 33 by sealing surface 43 middle opening.It will be appreciated by those skilled in the art that and also seal ring can be installed on sealing surface 43.
In the present embodiment, the working principle of pneumatic on-off valve 3 is as follows, when the air pressure at gas control mouth 31 place is much higher than the second gas port 33, piston 51 moves to the direction of the first gas port 32, linkage rod 61 and interior position-arresting card 63 drive flap 41 to move to the direction of the first gas port 32, thus open the passage between the second gas port 33 and the first gas port.When the draught head of the air pressure at gas control mouth 31 place and the second gas port 33 is not enough, piston 51 drives linkage rod 61 to bounce back to gas control mouth 31 direction.Now, because flap 41 can move along linkage rod 61, and the control of piston 51 is departed from.Passage between first gas port 32 and the second gas port 33 depends on the pressure difference between the first gas port 32 and the second gas port 33.If now the air pressure of the first gas port 32 is higher than the second gas port 33, air-flow flows to the second gas port 33 from the first gas port 32, and air-flow drives flap 41 to move to sealing surface 43, and then the passage between automatic blocking first gas port 32 and the second gas port 33.When the air pressure of the first gas port 32 is higher than the second gas port 33, air pressure struts the sealing between flap 41 and sealing surface 43, opens the passage between the first gas port 32 and the second gas port 33, thus makes air-flow can flow to the first gas port 32 from the second gas port 33 constantly.
Claims (5)
1. a pneumatic mechanism for anti-whereabouts, comprises cylinder and selector valve; Cylinder piston is provided with in cylinder; Cylinder piston connects piston rod; The internal cavities of cylinder is divided into upper and lower two air chambers by cylinder piston, is respectively upper gas chamber and lower chamber; Upper gas chamber is connected described selector valve with lower chamber respectively by tracheae; It is characterized in that, between described lower chamber and selector valve, pneumatic on-off valve is installed; Pneumatic on-off valve comprises gas control mouth, the first gas port and the second gas port; The gas control mouth of pneumatic on-off valve is connected by tracheae with upper gas chamber; First gas port is connected by tracheae with lower chamber; Second gas port is connected by tracheae with selector valve.
2. the pneumatic mechanism of anti-whereabouts as claimed in claim 1, is characterized in that, is provided with flap chamber and piston cavity in described pneumatic on-off valve; Described flap chamber connects the first gas port, and inside is provided with flap; Described piston cavity connects gas control mouth, and inside is provided with piston; Described flap chamber and piston cavity are coaxial, are interconnected, between be provided with slide opening; Linkage rod is provided with in described slide opening; The two ends of described linkage rod lay respectively at flap chamber and piston cavity; Described flap and piston are arranged on the two ends of described linkage rod respectively; In described piston cavity, described piston is fixedly connected with linkage rod; The part of described linkage rod in described flap chamber is provided with outer position-arresting card and interior position-arresting card; Described flap is enclosed between the outer position-arresting card of described linkage rod and interior position-arresting card, can slide along described linkage rod; Described flap is frustoconic shape mechanism; The sealing surface consistent with the frustum cone structure of flap is provided with in described flap chamber; Described flap chamber is communicated with the second gas port by described sealing surface middle opening.
3. the pneumatic mechanism of anti-whereabouts as claimed in claim 2, is characterized in that, described flap is provided with seal ring.
4. the pneumatic mechanism of anti-whereabouts as claimed in claim 2, is characterized in that, described sealing surface is provided with seal ring.
5. the pneumatic mechanism of anti-whereabouts as claimed in claim 2, is characterized in that, is also provided with spring between described piston and the bottom of piston cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420593864.4U CN204267718U (en) | 2014-10-15 | 2014-10-15 | A kind of pneumatic mechanism of anti-whereabouts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420593864.4U CN204267718U (en) | 2014-10-15 | 2014-10-15 | A kind of pneumatic mechanism of anti-whereabouts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267718U true CN204267718U (en) | 2015-04-15 |
Family
ID=52802589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420593864.4U Expired - Fee Related CN204267718U (en) | 2014-10-15 | 2014-10-15 | A kind of pneumatic mechanism of anti-whereabouts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961870A (en) * | 2018-08-23 | 2018-12-07 | 重庆加河科技有限公司 | A kind of lift-on/lift-off type VR teaching equipment and transmission display methods |
| CN111637113A (en) * | 2020-06-04 | 2020-09-08 | 中国铝业股份有限公司 | Cylinder and piston position detection device thereof |
-
2014
- 2014-10-15 CN CN201420593864.4U patent/CN204267718U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961870A (en) * | 2018-08-23 | 2018-12-07 | 重庆加河科技有限公司 | A kind of lift-on/lift-off type VR teaching equipment and transmission display methods |
| CN111637113A (en) * | 2020-06-04 | 2020-09-08 | 中国铝业股份有限公司 | Cylinder and piston position detection device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106641347A (en) | Pressure-relief one-way valve | |
| CN204267718U (en) | A kind of pneumatic mechanism of anti-whereabouts | |
| CN104100628A (en) | Dropping prevention sucking disc pothook | |
| CN104148563B (en) | Novel air pneumatic hammer | |
| CN203962657U (en) | Loose-prevention type hook with sucker | |
| CN102991749A (en) | Intelligent vacuum inflating packaging machine | |
| CN208417549U (en) | A kind of Pneumatic emptying valve | |
| CN204062109U (en) | Twin-tub Subzero valve pneumatic actuator | |
| CN104527630B (en) | A kind of piston type pneumatic control stop valve | |
| CN206572028U (en) | Can pressure release type check valve | |
| CN202901306U (en) | All-stainless-steel pneumatic angle seat valve | |
| CN108105435A (en) | Pilot operated safety valve | |
| CN203516788U (en) | Zero-leakage lifting valve | |
| CN203051843U (en) | Vacuum three-way valve | |
| CN203176506U (en) | Manual operation and hydraulic pressure combined normally-open valve | |
| CN206221691U (en) | A kind of guiding valve for vacuum excrement collector system | |
| CN201982674U (en) | Pneumatic piston type on/off valve | |
| CN102966770A (en) | Elastic rubber type check valve for multi-dust environment | |
| CN102661408B (en) | Gas flow control device | |
| CN208292641U (en) | A kind of filling liquid filling valve | |
| CN207701858U (en) | Pilot-operated type bellows safety valve | |
| CN202972045U (en) | Elastic rubber pipe type one-way valve used in multi-dust environment | |
| CN204337925U (en) | A kind of air inlet structure of sack cleaner | |
| CN103075634A (en) | Variable-volume energy storage tank | |
| CN103791100A (en) | All-stainless steel pneumatic angle seat valve |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20181015 |