CN201192691Y - Air exhausting device - Google Patents
Air exhausting device Download PDFInfo
- Publication number
- CN201192691Y CN201192691Y CNU2008200471832U CN200820047183U CN201192691Y CN 201192691 Y CN201192691 Y CN 201192691Y CN U2008200471832 U CNU2008200471832 U CN U2008200471832U CN 200820047183 U CN200820047183 U CN 200820047183U CN 201192691 Y CN201192691 Y CN 201192691Y
- Authority
- CN
- China
- Prior art keywords
- valve seat
- spool
- air
- cavity
- pump drainage
- 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 - Lifetime
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Abstract
The utility model discloses a suction and exhaust device, which comprises a device cavity body. An air outlet, an air inlet and a connecting fixed structure are arranged on the device cavity body. The suction and exhaust device is characterized in that a one-way valve device is arranged in the device cavity body close to the air inlet end, and comprises a valve seat and a valve spool; a magnetism automatic closing device, an elasticity automatic closing device, or a self-gravity automatic closing structure is arranged between the valve seat and the valve spool; the valve seat is conically and hermetically matched with the valve spool; an inlet passage on the valve seat is a tapered cavity through-hole, and a valve is a circular sphere; and the connecting fixed structure is a cavity sleeve cap or a cavity sleeve plug. The suction and exhaust device has the functions of automatic air closure and automatic pressure balancing, can be used in not only a chemical laboratory, but also a pipeline system required to be sucked and exhausted, and has the advantages of wide use range and high practicability.
Description
Technical field
The utility model relates to laboratory equipment, is a kind of pump drainage device of air that the laboratory is used specifically.
Background technology
In chemical laboratory, as when in vitro carrying out pump drainage gas, no matter be in the use location state and still be in not use location state, generally speaking, pipeline is in channel status all the time, when a plurality of test tubes are connected in the system of same negative pressure source, when if a certain test tube does not use, the branch branch road that need will be used for the negative pressure source of this test tube is closed, otherwise other test tube just can be worked, make troubles to use like this, and the branch branch road of each negative pressure source also to install air valve, increase use cost widely.Having identical shortcoming equally in other place that is provided with similar device, promptly is when a plurality of cavitys carry out pump drainage gas in the system that is connected same negative pressure source, and each cavity all is provided with the branch branch road of negative pressure source, therefore all has above-mentioned identical shortcoming.
Summary of the invention
The purpose of this utility model provides a kind of can or formation automatically according to use and non-working condition nature and opens or closing state, and has the pump drainage device of air of self-balancing pressure effect.
The utility model is realized by following technical proposals:
A kind of pump drainage device of air comprises the device cavity, and the device cavity is provided with gas outlet, air inlet and is connected and fixed structure, it is characterized in that: be provided with check valve apparatus in the described device cavity and near the air inlet end.
Described check valve apparatus includes but not limited to following several implementation:
Described check valve apparatus comprises valve seat, spool, is provided with the magnetic self closing device between valve seat and the spool.
Described check valve apparatus comprises valve seat, spool, is provided with the elastic force self closing device between valve seat and the spool.
Described air inlet is arranged on the bottom of device cavity, and described check valve apparatus comprises valve seat, spool, is provided with from the gravity automatic closing structure between valve seat and the spool.
Cooperate for cone seal between described valve seat and the spool.
Inlet channel on the described valve seat is a conical cavity through hole, and described spool is a spherosome.
The described structure that is connected and fixed is the chamber cap bag.
The described structure that is connected and fixed is a chamber cover plug.
The utility model compared with prior art has the following advantages:
Owing to be provided with check valve apparatus in the device cavity and near the air inlet end, like this when the pump drainage device of air by being connected and fixed sealing structure at test tube or a certain when needing on the pump drainage gas cavity, the switching of valve is unidirectional ending, therefore, can realize the function of holding one's breath automatically according to using and non-working condition nature or the open or closing state of formation automatically.And when a plurality of cavitys need carry out pump drainage gas, and be to be connected in the system of same negative pressure source, at this moment, if some cavitys do not need to carry out pump drainage gas, because spool is closed, so do not influence the use of other branch road, concerning the system of total negative pressure source, played the effect of self-balancing pressure yet.The branch branch road that also just not be used in simultaneously negative pressure source is installed air valve or cut-out gas circuit or is sealed this minute branch road, has simplified operation, reduced use cost widely, and the sealing effectiveness of pipeline has also obtained reinforcement.
Be provided with magnetic self closing device or elastic force self closing device between valve seat and the spool or from the gravity automatic closing structure, like this, for container or pipeline that terminal connects, its installation site and head-up tilt state can be selected arbitrarily, have made things convenient for using and operating of people widely.
Spool adopt cone seal or or spherical sealing, significant sealing affection is simple in structure automatically, can effectively reduce cost.
Being connected and fixed structure is chamber cap bag or chamber cover plug, can be overcoat when connecting like this, also can be interior plug, very convenient to use.
Description of drawings
Fig. 1 is the utility model pump drainage device of air structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model pump drainage device of air is further described:
As shown in Figure 1, the utility model pump drainage device of air, comprise device cavity 1, device cavity 1 is provided with gas outlet 11, is connected and fixed structure 13 and air inlet 12, air inlet end at device cavity 1 is provided with check valve apparatus, check valve apparatus comprises valve seat 14, spool 2, and spool 2 is landed on the valve seat 14 movably.Can realize unidirectional between valve seat and the spool from the gravity automatic closing structure by function, more particularly, inlet channel on the valve seat 14 is a conical cavity through hole, spool 2 is made of two parts, a part is a rotary body, another part is the bullet that matches with the conical cavity through hole that is arranged on rotary body one end, and spool 2 also can be a spherosome.Can also realize the unidirectional function of ending by the magnetic self closing device between valve seat 14 and the spool 2,, the elastic force self closing device is set perhaps,, valve cut out as mounting spring on the spool 2 as on valve seat 14 and spool 2, magnet being installed.Being connected and fixed structure 13 and being the chamber cap bag, also can be chamber cover plug.Spool 2 is closed when non-working condition, and valve is unidirectional to be ended.Therefore, can be according to using and non-working condition nature or the open or closing state of formation automatically.When a plurality of cavity body need be carried out pump drainage gas, and be to be connected in the system of same negative pressure source 3,, remove this cavity body, because spool closes, so also do not influence the use of other branch road if some cavity body do not need to carry out pump drainage gas.When people need use, only need connect a cavity body such as bottle or test tube, just can operate, for the whole system of negative pressure source 3, also played the effect of self-balancing pressure.The branch branch road that so also just not be used in negative pressure source is installed air valve, has reduced use cost widely, and the sealing effectiveness of pipeline also obtained reinforcement, and it is convenient completely to use.
The utility model pump drainage device of air not only can be used in the chemical laboratory, and needing can be used for the pipe-line system of pump drainage gas.Therefore the scope of application is wide, and practicality is big.
Claims (8)
1. a pump drainage device of air comprises the device cavity, and the device cavity is provided with gas outlet, air inlet and is connected and fixed structure, it is characterized in that: be provided with check valve apparatus in the described device cavity and near the air inlet end.
2. pump drainage device of air according to claim 1 is characterized in that: described check valve apparatus comprises valve seat, spool, is provided with the magnetic self closing device between valve seat and the spool.
3. pump drainage device of air according to claim 1 is characterized in that: described check valve apparatus comprises valve seat, spool, is provided with the elastic force self closing device between valve seat and the spool.
4. pump drainage device of air according to claim 1 is characterized in that: described air inlet is arranged on the bottom of device cavity, and described check valve apparatus comprises valve seat, spool, is provided with from the gravity automatic closing structure between valve seat and the spool.
5. according to claim 2 or 3 or 4 described pump drainage device of air, it is characterized in that: cooperate for cone seal between described valve seat and the spool.
6. pump drainage device of air according to claim 4 is characterized in that: the inlet channel on the described valve seat is a conical cavity through hole, and described spool is a spherosome.
7. pump drainage device of air according to claim 5 is characterized in that: the described structure that is connected and fixed is the chamber cap bag.
8. pump drainage device of air according to claim 5 is characterized in that: the described structure that is connected and fixed is a chamber cover plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200471832U CN201192691Y (en) | 2008-04-30 | 2008-04-30 | Air exhausting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200471832U CN201192691Y (en) | 2008-04-30 | 2008-04-30 | Air exhausting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201192691Y true CN201192691Y (en) | 2009-02-11 |
Family
ID=40392236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200471832U Expired - Lifetime CN201192691Y (en) | 2008-04-30 | 2008-04-30 | Air exhausting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201192691Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444517A (en) * | 2015-12-29 | 2016-03-30 | 青岛海尔股份有限公司 | Control method for gas concentration in freshness-retaining drawer |
| CN105509408A (en) * | 2015-12-29 | 2016-04-20 | 青岛海尔股份有限公司 | Pressure balancing mechanism and refrigerator using same |
| CN105793090A (en) * | 2013-12-09 | 2016-07-20 | 拉瓦尔A.C.S.公司 | Draining device |
| CN105862869A (en) * | 2016-04-12 | 2016-08-17 | 河南理工大学 | Grouting system |
| CN109078452A (en) * | 2018-09-03 | 2018-12-25 | 珠海市思卡净化技术有限公司 | A kind of double tower switching air purifier of novel compositions valve |
-
2008
- 2008-04-30 CN CNU2008200471832U patent/CN201192691Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105793090A (en) * | 2013-12-09 | 2016-07-20 | 拉瓦尔A.C.S.公司 | Draining device |
| CN105444517A (en) * | 2015-12-29 | 2016-03-30 | 青岛海尔股份有限公司 | Control method for gas concentration in freshness-retaining drawer |
| CN105509408A (en) * | 2015-12-29 | 2016-04-20 | 青岛海尔股份有限公司 | Pressure balancing mechanism and refrigerator using same |
| CN105509408B (en) * | 2015-12-29 | 2018-08-10 | 青岛海尔股份有限公司 | Pressure balance mechanism and the refrigerator for using the pressure balance mechanism |
| CN105862869A (en) * | 2016-04-12 | 2016-08-17 | 河南理工大学 | Grouting system |
| CN109078452A (en) * | 2018-09-03 | 2018-12-25 | 珠海市思卡净化技术有限公司 | A kind of double tower switching air purifier of novel compositions valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090211 |
|
| CX01 | Expiry of patent term |