CN206540877U - Pot strainer before a kind of check valve - Google Patents
Pot strainer before a kind of check valve Download PDFInfo
- Publication number
- CN206540877U CN206540877U CN201720249179.3U CN201720249179U CN206540877U CN 206540877 U CN206540877 U CN 206540877U CN 201720249179 U CN201720249179 U CN 201720249179U CN 206540877 U CN206540877 U CN 206540877U
- Authority
- CN
- China
- Prior art keywords
- filter
- check valve
- filter body
- mobile phase
- strainer
- 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
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- Details Of Valves (AREA)
Abstract
The utility model discloses pot strainer before a kind of check valve, including fastening screw, pump check valve, mobile phase pipe and filter, the filter includes filter body, filter core and strainer cover, fastening screw is fixedly connected by screw thread with filter body, mobile phase pipe is fixed with fastening screw, the step through-hole being interconnected with mobile phase pipe is provided with filter body, filter core is installed in filter body, the end of filter body is threadably secured connection strainer cover, one end that strainer cover is placed in filter body simultaneously props up filter core, conical cavity is equipped with the filter core mutually position of corresponding filter body and filter cover, through hole in strainer cover is connected with the step through-hole of filter body, the beneficial effects of the utility model are：The mobile phase of pump check valve is flowed to after the filtration of filtration core, its internal impurity can be effectively removed, the situation for reducing block pumps check valve occurs, and reduces the fault rate of pump check valve.
Description
Technical field
The utility model is related to chemical analysis technology field, pot strainer before specifically a kind of check valve.
Background technology
Existing liquid chromatograph does not have filter, solvent before pump is close to the inlet valve connect（Mobile phase）In impurity
Easily it is attached on the single-phase valve of entrance, causes non-return valve function to decline, cause the pressure oscillation of pump, influences measurement result, error
Increase.
The content of the invention
The purpose of this utility model is to provide pot strainer before a kind of check valve, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the utility model provides following technical scheme：
Pot strainer before a kind of check valve, including fastening screw, pump check valve, mobile phase pipe and filter, the mistake
Filter includes filter body, filter core and strainer cover, and fastening screw is fixedly connected by screw thread with filter body, fastens spiral shell
It is fixed with silk in the step through-hole for being provided with and being interconnected with mobile phase pipe in mobile phase pipe, filter body, filter body
Filter core is installed, the end of filter body is threadably secured connection strainer cover, while strainer cover is placed in filter master
Internal one end props up filter core, with being equipped with conical cavity, mistake at the filter core mutually position of corresponding filter body and filter cover
Through hole in filter cover is connected with the step through-hole of filter body, and mobile phase flows to filter after the filtration of filtration core
Lid, the end of strainer cover is connected by screw thread with pump check valve.
It is used as further program of the utility model：Sealing ring is installed between the strainer cover and filter body,
The height of sealing ring is higher than filter core.
It is used as the utility model further scheme：The filter core is the aperture that uses stainless steel to be made for 5u filtering
Piece.
Compared with prior art, the beneficial effects of the utility model are：The mobile phase of pump check valve is flowed to through filtration core
After filtration, its internal impurity can be effectively removed, the situation for reducing block pumps check valve occurs, and reduces pump check valve
Fault rate, it is ensured that the pressure stability of pump.
Brief description of the drawings
Fig. 1 is a kind of explosive view of pot strainer before check valve.
In figure：1- fastening screws, 2- filter bodies, 3- filter cores, 4- strainer covers, 5- pumps check valve, 6- mobile phase pipes.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Refer in figure, the utility model embodiment, pot strainer before a kind of check valve, including fastening screw 1, pump list
To valve 5, mobile phase pipe 6 and filter, mobile phase pipe 6 is used as solvent（Mobile phase）Flow duct, the process in mobile phase pipe 6
Entered after filter in pump check valve 5, the filter includes filter body 2, filter core 3 and strainer cover 4, fastening screw
1 is fixedly connected by screw thread with filter body 2, is fixed with mobile phase pipe 6 in fastening screw 1, be provided with filter body 2 with
Filter core 3 is installed in the interconnected step through-hole of mobile phase pipe 6, filter body 2, the end of filter body 2 passes through spiral shell
Line is fixedly connected with strainer cover 4, while one end that strainer cover 4 is placed in filter body 2 props up filter core 3, prevents the pine of filter core 3
It is de-, with being equipped with conical cavity 7 at the filter core 3 mutually position of corresponding filter body 2 and filter cover 4, in order to increase
The through hole reduced while flow velocity in the pressure that filter core 3 is subject to, strainer cover 4 is connected with the step through-hole of filter body 2, is flowed
Dynamic that strainer cover 4 is flowed to after the filtration of filtration core 3, the end of strainer cover 4 is connected by screw thread with pump check valve 5
Connect, flow to the mobile phase of pump check valve 5 after the filtration of filtration core 3, can effectively remove its internal impurity, reduce and block
The situation of pump check valve 5 occurs, and reduces the fault rate of pump check valve 5, it is ensured that the pressure stability of pump.
Sealing ring is installed, the height of sealing ring is higher than filter core 3, realized between the strainer cover 4 and filter body 2
Good sealing function.
The filter core 3 is the aperture that uses stainless steel to be made for 5u filter.
Operation principle of the present utility model is：The mobile phase of pump check valve 5 is flowed to after the filtration of filtration core 3, energy
Its internal impurity is effectively removed, the situation for reducing block pumps check valve 5 occurs, and reduces the fault rate of pump check valve 5, it is ensured that
The pressure stability of pump.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (3)
1. pot strainer before a kind of check valve, including fastening screw, pump check valve, mobile phase pipe and filter, its feature exist
In the filter includes filter body, filter core and strainer cover, and fastening screw is fixed by screw thread and filter body to be connected
Connect, the step through-hole for being provided with and being interconnected with mobile phase pipe in mobile phase pipe, filter body, filtering are fixed with fastening screw
Filter core is installed, the end of filter body is threadably secured connection strainer cover, while strainer cover is placed in device main body
One end in filter body props up filter core, with being equipped with cone at the filter core mutually position of corresponding filter body and filter cover
Through hole in shape chamber, strainer cover is connected with the step through-hole of filter body, and the end of strainer cover passes through screw thread and pump list
Connected to valve.
2. pot strainer before a kind of check valve according to claim 1, it is characterised in that the strainer cover and filtering
Sealing ring is installed, the height of sealing ring is higher than filter core between device main body.
3. pot strainer before a kind of check valve according to claim 2, it is characterised in that the filter core is using stainless
The aperture that steel is made is 5u filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720249179.3U CN206540877U (en) | 2017-03-15 | 2017-03-15 | Pot strainer before a kind of check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720249179.3U CN206540877U (en) | 2017-03-15 | 2017-03-15 | Pot strainer before a kind of check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206540877U true CN206540877U (en) | 2017-10-03 |
Family
ID=59942721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720249179.3U Expired - Fee Related CN206540877U (en) | 2017-03-15 | 2017-03-15 | Pot strainer before a kind of check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206540877U (en) |
-
2017
- 2017-03-15 CN CN201720249179.3U patent/CN206540877U/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: 20171003 Termination date: 20180315 |