CN207049382U - A kind of device for pumping and filtering device liquidproof suck-back - Google Patents
A kind of device for pumping and filtering device liquidproof suck-back Download PDFInfo
- Publication number
- CN207049382U CN207049382U CN201720966153.0U CN201720966153U CN207049382U CN 207049382 U CN207049382 U CN 207049382U CN 201720966153 U CN201720966153 U CN 201720966153U CN 207049382 U CN207049382 U CN 207049382U
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- China
- Prior art keywords
- suck
- dsah
- pot
- catch
- valve
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- Expired - Fee Related
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Abstract
The utility model provides a kind of device for pumping and filtering device liquidproof suck-back, including dsah-pot, the first connector for being used for being connected with vacuum generator is provided with the top of the dsah-pot, the side of the dsah-pot bottom is provided with the second connector for being used for being connected with nutsch filter, the opposite side of the dsah-pot bottom is provided with suck-back liquid discharge pipe, check valve is provided with the suck-back liquid discharge pipe, the check valve includes valve seat and the silicone valve coordinated with valve base sealing, the valve seat is fixedly arranged on suck-back liquid discharge inside pipe wall, and the silicone valve is fixedly connected with valve seat；The thrust that the silicone valve is entered the suck-back liquid in dsah-pot by suck-back can be opened.Apparatus structure provided by the utility model is simple, and anti-suck effect is good.
Description
Technical field
Vacuum filtration suck-back device is the utility model is related to, more particularly to one kind prevents liquid suck-back from entering in vacuum system
Device.
Background technology
Vacuum pumping is the routine operation in numerous experimental science fields, in use, easily due to maloperation or
Equipment fault etc. causes the liquid suck-back in bottle,suction to enter vacuum system, then causes device damage.At present, it is relatively common anti-
Suck-back device is shown in Figure 1.Its anti-suck principle of this traditional suck-back device is by bottle,suction 101 and vacuum system
Suck-back bottle 102 is set between system 103, and the height of bottle,suction 101 and the connector of suck-back bottle 102 is arranged to be less than suck-back bottle
102 and the connection open height of vacuum system 103.When liquid is excessive in bottle,suction, the liquid in bottle,suction can first suck suck-back
Bottle memory storage is got up, without being directly entered vacuum system.But when liquid level is too high in suck-back bottle, equally exists liquid and fall
Suck the risk of vacuum system.Moreover, also there is the defects of more heavy, to be not easy to movement and store in this suck-back device.
Utility model content
In order to overcome above-mentioned deficiency, the purpose of this utility model is to provide a kind of for pumping and filtering device liquidproof suck-back
Device, the apparatus structure is simple, and anti-suck effect is good.
For the utility model to reach its purpose, the technical scheme of use is as follows：
A kind of device for pumping and filtering device liquidproof suck-back, including dsah-pot, be provided with the top of the dsah-pot be used for
First connector of vacuum generator connection, the side of the dsah-pot bottom are provided with the second connection for being used to be connected with nutsch filter
Mouthful, the opposite side of the dsah-pot bottom is provided with suck-back liquid discharge pipe, and check valve, the list are provided with the suck-back liquid discharge pipe
Include valve seat and the silicone valve coordinated with valve base sealing to valve, the valve seat is fixedly arranged on suck-back liquid discharge inside pipe wall, the silicon
Glue valve block is fixedly connected with valve seat；The thrust that the silicone valve is entered the suck-back liquid in dsah-pot by suck-back can be opened.
Further, the gear for delaying suck-back liquid to suck the first connector is also equipped with the inner chamber of the dsah-pot
Piece, offers stomata on the catch, at the top of the catch and dsah-pot between leave space.
As a kind of embodiment, the catch is fixedly installed in the inner chamber of dsah-pot.
As another embodiment, the catch is movably installed in the inner chamber of dsah-pot and can be in dsah-pot up and down
Slide, spring is connected between the bottom of dsah-pot and catch, when the spring be in maximum tension length, the catch and
Existential Space between at the top of dsah-pot.
As a kind of embodiment, two or more stomata is offered on the catch.
Technical scheme provided by the utility model has the advantages that：
Device provided by the utility model for pumping and filtering device liquidproof suck-back, dsah-pot be used for be connected to nutsch filter and
Between vacuum generator (such as vavuum pump), during vacuum generator normal work, the silica gel in the suck-back liquid discharge pipe of dsah-pot
Valve block is closed；And when there is liquid suck-back to enter in dsah-pot, the thrust of current can promote silicone valve to depart from valve seat
And it is in open mode so that liquid is discharged via suck-back liquid discharge pipe.Catch is further set in dsah-pot, is entered when suck-back
When liquid volume is more, vacuum generator can be flowed into delays liquid, and then reduce the risk that vacuum generator suck-back enters liquid.
Brief description of the drawings
Fig. 1 is the structural representation of existing suck-back device.
Fig. 2 is the apparatus structure schematic diagram of the present utility model for pumping and filtering device liquidproof suck-back.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 2.The utility model provides a kind of device for pumping and filtering device liquidproof suck-back, and the device includes slow
Rush cylinder 3.It is provided with the first connector 1 at the top of the dsah-pot 3, first connector 1 is used for and vacuum generator (such as vacuum
Pump) connection.It is provided with the second connector 7 in the side of the bottom of dsah-pot 3, second connector 7 is used for and nutsch filter (such as is taken out
Filter flask) connection.Opposite side in the bottom of dsah-pot is provided with suck-back liquid discharge pipe 5, is provided with the suck-back liquid discharge pipe 5 unidirectional
Valve 6.Check valve 6 includes valve seat 62 and silicone valve 61, and silicone valve 61 and the sealing of valve seat 62 coordinate.Valve seat 62 is fixedly installed in
The inwall of suck-back liquid discharge pipe 5, silicone valve 61 are fixedly connected with valve seat 62, specifically, be silicone valve a part and
Valve seat is fixedly connected, and after suck-back liquid suck-back enters dsah-pot, silicone valve can be opened under the thrust of suck-back liquid.And work as
There is no the suction of suck-back liquid, during vacuum generator normal work, silicone valve is closed.So, when there is suck-back liquid
When suck-back enters dsah-pot, due to the impetus of suck-back liquid, silicone valve can be caused to depart from valve seat and be in open mode, and then
Suck-back liquid can discharge via suck-back liquid discharge pipe.
In order to preferably reduce the risk that suck-back liquid suck-back enters the first connector, it is also equipped with the inner chamber of dsah-pot 3
Catch 2, stomata 21 is offered on the catch 2, space is left between catch 2 and the top of dsah-pot 3.When there is more suck-back liquid
When suck-back enters dsah-pot 3, catch 2 can delay the flow velocity of suck-back liquid, delay it to flow into the process of the first connector 1, so as to drop
Low-risk.In a kind of embodiment, catch 2 is fixedly installed in the inner chamber of dsah-pot 3.It is embodied in another kind
In mode, catch 2 is movably installed in the inner chamber of dsah-pot 3, and catch can slide up and down in dsah-pot.And in dsah-pot 3
Bottom and catch 2 between be connected with spring 4, catch 2 can under the promotion of current upward sliding.When spring 4 is in maximum
During tensile elongation, certain space be present between catch 2 and the top of dsah-pot 3.When suck-back liquid is flowed into dsah-pot rapidly, catch
It can play a part of deceleration with spring, and promote the direction of current towards suck-back liquid discharge pipe to flow and discharge outside dsah-pot.
In a kind of embodiment, the quantity of the stomata opened up on catch is two or more.
Using the device described above for pumping and filtering device liquidproof suck-back, vacuum generator suck-back can be substantially reduced
Enter the risk of liquid, and the apparatus structure is simple, and required space is also smaller.
The utility model is not limited to above-mentioned embodiment, and every various changes or modifications to the utility model do not take off
From spirit and scope of the present utility model, if these changes and modification belong to the claims and equivalents of the utility model
Within the scope of, then the utility model is also implied that comprising these changes and modification.
Claims (5)
1. a kind of device for pumping and filtering device liquidproof suck-back, it is characterised in that including dsah-pot, set at the top of the dsah-pot
There is the first connector for being connected with vacuum generator, the side of the dsah-pot bottom, which is provided with, is used for what is be connected with nutsch filter
Second connector, the opposite side of the dsah-pot bottom are provided with suck-back liquid discharge pipe, are provided with the suck-back liquid discharge pipe unidirectional
Valve, the check valve include valve seat and the silicone valve coordinated with valve base sealing, and the valve seat is fixedly arranged in suck-back liquid discharge pipe
Wall, the silicone valve are fixedly connected with valve seat；The silicone valve is entered the thrust of the suck-back liquid in dsah-pot by suck-back
It can open.
A kind of 2. device for pumping and filtering device liquidproof suck-back according to claim 1, it is characterised in that the buffering
The catch for delaying suck-back liquid to suck the first connector is also equipped with the inner chamber of cylinder, offers stomata on the catch, institute
Space is left between stating at the top of catch and dsah-pot.
A kind of 3. device for pumping and filtering device liquidproof suck-back according to claim 2, it is characterised in that the catch
It is fixedly installed in the inner chamber of dsah-pot.
A kind of 4. device for pumping and filtering device liquidproof suck-back according to claim 2, it is characterised in that the catch
It is movably installed in the inner chamber of dsah-pot and can be slided up and down in dsah-pot, is connected between the bottom of dsah-pot and catch
Spring, when the spring is in maximum tension length, Existential Space between catch and the dsah-pot top.
A kind of 5. device for pumping and filtering device liquidproof suck-back according to claim 2, it is characterised in that the catch
On offer two or more stomata.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720966153.0U CN207049382U (en) | 2017-08-03 | 2017-08-03 | A kind of device for pumping and filtering device liquidproof suck-back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720966153.0U CN207049382U (en) | 2017-08-03 | 2017-08-03 | A kind of device for pumping and filtering device liquidproof suck-back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207049382U true CN207049382U (en) | 2018-02-27 |
Family
ID=61499976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720966153.0U Expired - Fee Related CN207049382U (en) | 2017-08-03 | 2017-08-03 | A kind of device for pumping and filtering device liquidproof suck-back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207049382U (en) |
-
2017
- 2017-08-03 CN CN201720966153.0U patent/CN207049382U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180227 Termination date: 20180803 |