CN209041658U - A kind of one-way valve structures for high-speed liquid chromatography pump - Google Patents
A kind of one-way valve structures for high-speed liquid chromatography pump Download PDFInfo
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- CN209041658U CN209041658U CN201821776387.XU CN201821776387U CN209041658U CN 209041658 U CN209041658 U CN 209041658U CN 201821776387 U CN201821776387 U CN 201821776387U CN 209041658 U CN209041658 U CN 209041658U
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Abstract
The utility model relates to a kind of one-way valve structures for high-speed liquid chromatography pump, including valve body, valve chamber is equipped in valve body, partition portion is provided in the middle part of valve chamber, valve chamber is divided into uuper valve chamber and lower valve chamber by partition part interval, several discharge orifices are provided in partition portion, bonnet, is provided in uuper valve chamber, lower valve chamber is from top to bottom disposed with valve ball installation cavity, valve seat installation cavity, bottom flange installation cavity, and valve ball is placed in valve ball installation cavity, and valve seat is placed in valve seat installation cavity；Valve deck lower end or partition portion upper end are provided with oil trap, and the oil outlet of oil sump, the valve seat through-hole on valve seat are vertically arranged on bonnet, and valve ball lower end is placed in the upper end aperture of valve seat through-hole, and discharge orifice is connected to valve ball installation cavity.Simple, the small in size advantage of the application structure, and the defects of fundamentally avoid using failing caused by such as spring fatigue, corrosion brought by spring, the failure rate of check valve is greatly reduced, the functional reliability of check valve is improved.
Description
Technical field
The utility model relates to a kind of check valve, especially a kind of one-way valve structures for high-speed liquid chromatography pump.
Background technique
High pressure pump is known as " heart " of liquid chromatograph by people's image, is the important set of high speed liquid chromatograph
At component, the performance of high pressure pump directly affects the stability repeatability and analysis precision of analysis.Common high pressure pump
Mechanical reciprocating plunger pump is widely used, it is the reciprocating motion by its piston rod in fluid cylinder, alternately sucks and exports
Liquid carrys out work, and in this class pump, check valve is not only the indispensable important component of infusion pump, and its check valve
Performance directly decides the using effect of high pressure pump again.
In the prior art, the check valve of high pressure pump is to be supported with reset bullet on valve ball (such as spherical valve ball) mostly
The straight check valve of spring.Although the advantage that the check valve of this traditional structure has structure simple, small in size, is using
In there is some clearly disadvantageous: on the one hand, due to playing arrow long-term work in corrosive media, and working frequency is higher,
Spring is easily tired and damages；On the other hand, since valve chamber space is small, spring sizes are limited, and valve ball is not only made to be difficult to obtain surely
Fixed reliable reseting elasticity, the replacement of leakage easy to form and spring are also extremely inconvenient.Therefore, the check valve of this structure,
High failure rate, use is unreliable, is easy to lead to failure of check valve.
Summary of the invention
The purpose of this utility model just in order to solve the shortcomings of lattice in background technique, provides a kind of for high velocity liquid
The one-way valve structures of phase chromatogram pump, it is not only simple in structure, small in size, and using reliably, failure rate is low, easy to maintain.
In order to achieve the above objectives, the utility model adopts the following technical solution: a kind of list for high-speed liquid chromatography pump
To valve arrangement, including valve body, valve ball and valve seat, it is equipped with valve chamber in the valve body, is provided with partition portion, the valve chamber in the middle part of valve chamber
It is divided into uuper valve chamber and lower valve chamber by partition part interval, is provided in partition portion between several connection uuper valve chamber and lower valve chambers
Discharge orifice, is provided with bonnet, in uuper valve chamber, lower valve chamber be from top to bottom disposed with valve ball installation cavity, valve seat installation cavity, under
Valve deck installation cavity, valve ball are placed in valve ball installation cavity, and valve seat is placed in valve seat installation cavity, and lower valve is equipped in bottom flange installation cavity
Lid；Bonnet, lower end or partition portion upper end between bonnet, and partition portion are provided with oil trap, are vertically arranged on bonnet,
The oil outlet of oil sump is vertically arranged with fuel feed hole on bottom flange, the valve being connected to fuel feed hole is vertically arranged on valve seat
Block hole, the valve ball lower end are placed in the upper end aperture of valve seat through-hole, and the discharge orifice is connected to valve ball installation cavity.
A kind of optimization for the utility model, valve seat through-hole upper aperture setting it is chamfered, the lower end of the valve ball with
The chamfering connection eated dishes without rice or wine on this.
A kind of optimization for the utility model, the sphere diameter of valve ball are greater than the aperture of valve seat through-hole.
A kind of optimization for the utility model, there are three the discharge orifices longitudinally opened up for setting in partition portion.
A kind of optimization for the utility model, there are oiling gaps between valve ball and partition portion.
A kind of optimization for the utility model, the valve body is cylindrical, and the valve chamber is opened in the axial direction of the valve body
The heart.
Compared with the background art, the application not only has the advantages that structure is simple, small in size to the utility model, but also from root
It avoids on this using failing caused by such as spring fatigue, corrosion brought by spring and spring needs to regularly replace
And the defects of replacement inconvenience, the failure rate of check valve is greatly reduced, the functional reliability of check valve is improved；Band is used simultaneously
After having this structure of the partition portion of discharge orifice, and make valve ball in the case where not increasing volume and weight, obtains more reliable
Valve ball reset force, reduce check valve leakage and failure probability, ensure that the normal work of check valve；Again due to using circle
Spherical valve ball, structure is simple, and it is accurate to reset, sealed reliable；It is upper in partition portion to use discharge orifice, reduce liquid resistance and mentions
The high reset response speed of valve ball, ensure that further increasing for functional reliability.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure for the one-way valve structures of high-speed liquid chromatography pump.
Fig. 2 is the structural schematic diagram of valve body.
Fig. 3 is A direction view.
Specific embodiment
Embodiment 1: referring to Fig.1-3.A kind of one-way valve structures for high-speed liquid chromatography pump, including valve body 2, valve ball 3
With valve seat 1, the valve body 2 is interior to be equipped with valve chamber, is provided with partition portion 21 in the middle part of valve chamber, the valve chamber is by 21 share of partition portion
Uuper valve chamber 22 and lower valve chamber 23, the discharge orifices 24 being provided in partition portion 21 between several connection uuper valve chambers 22 and lower valve chamber 23,
Bonnet, 4 is provided in uuper valve chamber 22, lower valve chamber 23 is from top to bottom disposed with valve ball installation cavity 231, valve seat installation cavity
232, bottom flange installation cavity 233, valve ball 3 are placed in valve ball installation cavity 231, and valve seat 1 is placed in valve seat installation cavity 232, bottom flange
Bottom flange 5 is equipped in installation cavity 233；4 lower end of bonnet, or 21 upper end of partition portion between bonnet, 4 and partition portion 21 are provided with
Oil trap 6 is vertically arranged with the oil outlet 41 of the connection of oil trap 6 on bonnet, 4, is vertically arranged with fuel feed hole 51 on bottom flange 5,
The valve seat through-hole 11 being connected to fuel feed hole is vertically arranged on valve seat 1,3 lower end of valve ball is placed on the upper end of valve seat through-hole 11
In aperture, the discharge orifice 24 is connected to valve ball installation cavity 231.The check valve is loaded on the delivery outlet of High voltage output pump, works as high pressure
When rear pump output liquid, liquid opens valve ball 3, and liquid is pacified after fuel feed hole 51, valve seat through-hole 11 around valve ball 3 and valve ball
It behave affectedly behind 231 gap and is accumulated in oil trap 6 by each discharge orifice 24, finally flowing through oil outlet 41 by oil trap 6 makes high pressure liquid
Body output；The valve ball 3 of the check valve under the effect of gravity, makes 3 closed valve seat through-hole 11 of valve ball when High voltage output pump sucking liquid
And make liquid that can not flow back.
The upper aperture setting chamfered 111 of valve seat through-hole 11, the lower end of the valve ball 3 and the chamfering 111 eated dishes without rice or wine on this connect
It connects, in order to which valve ball 3 and the guiding of valve seat through-hole 11 align；
The sphere diameter of valve ball 3 is greater than the aperture of valve seat through-hole 11.
The discharge orifice 24 longitudinally opened up there are three being arranged in partition portion 21.The setting of discharge orifice 24 in partition portion 21, it is both sharp
In reduction liquid resistance, and it is conducive to valve ball 7 and keeps stable state, to further improves the directional properties of valve ball 7.
There are oiling gaps 25 between valve ball 3 and partition portion 21.
The valve body 2 is cylindrical, and the valve chamber is opened in the axial centre of the valve body 2.
Above-mentioned is only the preferred embodiment of present design.It is to be understood that some features in the embodiment can be with
Transformation improves.Such as valve body and partition portion can be decomposed into assembly；Valve ball can also be the corresponding constructions form such as cone, column；
Discharge orifice in partition portion more can select different quantity and size the check valve unit number to remove according to different requirements
One, outside two, three or two or more be can also be；The check valve of the structure can be loaded on the delivery outlet of high pressure pump,
It can be loaded on input port, but the two assembly direction is opposite.These are regarded as without prejudice to the transformation and improvement of present design principle
It falls into the protection scope of present design.
Claims (6)
1. a kind of one-way valve structures for high-speed liquid chromatography pump, including valve body (2), valve ball (3) and valve seat (1), feature
It is to be equipped with valve chamber in the valve body (2), is provided with partition portion (21) in the middle part of valve chamber, the valve chamber is spaced by partition portion (21)
Be divided into uuper valve chamber (22) and lower valve chamber (23), be provided on partition portion (21) several connection uuper valve chambers (22) and lower valve chamber (23) it
Between discharge orifice (24), is provided with bonnet, (4) in uuper valve chamber (22), lower valve chamber (23) is from top to bottom disposed with valve ball peace
It behave affectedly (231), valve seat installation cavity (232), bottom flange installation cavity (233), valve ball (3) is placed in valve ball installation cavity (231), valve seat
(1) it is placed in valve seat installation cavity (232), is equipped with bottom flange (5) in bottom flange installation cavity (233)；Bonnet, (4) and partition portion
(21) bonnet, (4) lower end or partition portion (21) upper end between are provided with oil trap (6), and bonnet, is vertically arranged on (4)
The oil outlet (41) of oil trap (6) connection, is vertically arranged with fuel feed hole (51) on bottom flange (5), valve seat is vertically arranged on (1)
The valve seat through-hole (11) being connected to fuel feed hole, valve ball (3) lower end is placed in the upper end aperture of valve seat through-hole (11), described
Discharge orifice (24) is connected to valve ball installation cavity (231).
2. the one-way valve structures for high-speed liquid chromatography pump according to claim 1, it is characterized in that: valve seat through-hole (11)
Chamfered (111) are arranged in upper aperture, and the lower end of the valve ball (3) is connect with the chamfering (111) eated dishes without rice or wine on this.
3. the one-way valve structures for high-speed liquid chromatography pump according to claim 1, it is characterized in that: the sphere diameter of valve ball (3)
Greater than the aperture of valve seat through-hole (11).
4. the one-way valve structures for high-speed liquid chromatography pump according to claim 1, it is characterized in that: being set on partition portion (21)
The discharge orifice (24) longitudinally opened up there are three setting.
5. the one-way valve structures for high-speed liquid chromatography pump according to claim 1, it is characterized in that: valve ball (3) and partition
There are oiling gap (25) between portion (21).
6. the one-way valve structures for high-speed liquid chromatography pump according to claim 1, it is characterized in that: the valve body (2) is in
Cylindricality, the valve chamber are opened in the axial centre of the valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821776387.XU CN209041658U (en) | 2018-10-30 | 2018-10-30 | A kind of one-way valve structures for high-speed liquid chromatography pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821776387.XU CN209041658U (en) | 2018-10-30 | 2018-10-30 | A kind of one-way valve structures for high-speed liquid chromatography pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041658U true CN209041658U (en) | 2019-06-28 |
Family
ID=67040061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821776387.XU Active CN209041658U (en) | 2018-10-30 | 2018-10-30 | A kind of one-way valve structures for high-speed liquid chromatography pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209041658U (en) |
-
2018
- 2018-10-30 CN CN201821776387.XU patent/CN209041658U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 511, Block C, Building 2, No. 321 Jinpeng Street, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee after: Hangzhou Tianzhao Technology Co.,Ltd. Address before: Room 506, Building 1, No. 2 Xiyuan Fifth Road, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee before: HANGZHOU XUYU TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230928 Address after: 337000 District A, Science and Technology Innovation City, West Renma Intelligent Industrial Park, Danjiang Street, Anyuan District, Pingxiang City, Jiangxi Province Patentee after: Jiangxi Tianzhao Chromatography Technology Co.,Ltd. Address before: Room 511, Block C, Building 2, No. 321 Jinpeng Street, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee before: Hangzhou Tianzhao Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |