CN202954961U - One-way valve of metering pump - Google Patents
One-way valve of metering pump Download PDFInfo
- Publication number
- CN202954961U CN202954961U CN 201220611925 CN201220611925U CN202954961U CN 202954961 U CN202954961 U CN 202954961U CN 201220611925 CN201220611925 CN 201220611925 CN 201220611925 U CN201220611925 U CN 201220611925U CN 202954961 U CN202954961 U CN 202954961U
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- China
- Prior art keywords
- valve
- metering pump
- spring
- valve ball
- way valve
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- 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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Abstract
The utility model belongs to the valve field, and concretely discloses a one-way valve of a metering pump. The valve comprises a valve seat, a valve cover, a valve ball and a spring, wherein the valve seat is connected with the valve cover through external fixing parts. The one-way valve is characterized in that a spring limiting groove is arranged in the upper part of the valve cover, a valve ball guiding groove is arranged in the middle part of the valve cover, one end of the spring is arranged in the spring limiting groove while the other end of the spring coordinates with the upper part of the valve ball, a groove is disposed at the central hole of the valve seat and is provided with an O-shaped ring, and the lower part of the valve ball coordinates with the O-shaped ring in a contacting manner. The one-way valve of the metering pump is low in requirements for machining precision and prolonged in service life, and former measuring precision can be completely achieved only by replacing the O-shaped ring of the valve seat, thereby making the one-way valve reusable, greatly reducing using costs of users, and bringing convenience for maintenance.
Description
Technical field
The utility model belongs to valve field, is specially a kind of metering pump one-way valve.
Background technique
Metering pump be a kind of can satisfy various strict technological process needs, flow can be in the 0-100% scope step-less adjustment, be used for carrying a kind of special displacement pump of liquid (particularly corrosive liquids).Metering pump belongs to reciprocating volumetric pump, is used for accurate measurement, and usually require the steady state accuracy of metering pump to be no more than ± 1%.Along with the development of modernization industry towards automation mechanized operation, this situation of far distance automatic controlling, the matching performance of metering pump is strong, adapt to medium (liquid) widely advantage particularly seem outstanding.Metering pump is comprised of drive stand parts, pump head parts, motor three parts, and the import and export one-way valve part in the pump head of metering pump is the pith the most of metering pump measuring accuracy assurance often.The domestic existing technique of one-way valve can satisfy existing measuring accuracy substantially, valve seat is the difficult point that present metering pump industry generally believes design, because satisfy these conditions: guarantee corrosion resistance, the materials processing performance is good, the partial operation required precision is very high, material requirements hardness is high, and toughness will be got well simultaneously.Due to the restriction of above-mentioned condition, many between each condition is conflicting restrictions, and the artificer have to get corresponding balance, but final result is, the material of valve seat, processing cost are very high, and the life-span of valve seat is also very not fully up to expectations simultaneously.Valve seat under ceramic valve ball shocks up to a hundred time per minute, at most half a year at least some months just lost original precision, cause in metering pump and leak, can only change, because domestic present design nearly all cannot be repaired use.The many occasions of user are 24 hours round-the-clock works (such as sewage treatment works) of not stopping work of requirement metering pump, and the user generally adopts a preparation and a use pattern, and this has improved the user cost of metering pump greatly.In sum: a easy processing of market in urgent need, high life, be convenient to maintenance simultaneously, and the metering pump of good seal performance is imported and exported and is used one-way valve simultaneously.
The model utility content
For problems of the prior art, the purpose of this utility model is to provide a kind of technological scheme of metering pump one-way valve.
Described a kind of metering pump one-way valve comprises valve seat, valve bonnet, valve ball and spring, and valve seat is connected by external fixator with valve bonnet, it is characterized in that being provided with the spring restraining groove above described valve bonnet, is provided with the valve ball guiding groove in the middle part of valve bonnet; Described spring one end is arranged in the spring restraining groove, and the spring the other end matches with valve ball top; The central hole of described valve seat arranges groove, and O type circle is set in groove, and described valve ball bottom touches with described O type circle and coordinates.
Described a kind of metering pump one-way valve is characterized in that the diameter of described O type circle is less than the diameter of valve ball.
Described a kind of metering pump one-way valve is characterized in that the spacing of import of the center hole of described valve seat and valve bonnet below is less than the radius of valve ball.
Described a kind of metering pump one-way valve is characterized in that the diameter of described spring restraining groove is less than the diameter of valve ball guiding groove.
Described a kind of metering pump one-way valve is characterized in that the diameter of described valve ball is less than the diameter of valve ball guiding groove.
Described a kind of metering pump one-way valve is characterized in that described O type circle adopts fluorine rubber to make.
The utility model not only requirement on machining accuracy is lower, and the life-span improves greatly, and as long as change a gadget O type circle of valve seat, just can reach original measuring accuracy fully, thereby can reuse, and greatly reduces user's user cost, is convenient to maintenance.
Description of drawings
Fig. 1 is the utility model sectional structure schematic diagram;
In figure: the 1-valve bonnet; The 2-valve seat; The 3-valve ball; The 4-spring; 5-O type circle; A-spring restraining groove; B-valve ball guiding groove.
Embodiment
Below in conjunction with Figure of description, the utility model is described further:
A kind of metering pump one-way valve comprises valve seat 2, valve bonnet 1, valve ball 3 and spring 4, and valve seat 2 is connected by external fixator with valve bonnet 1, is provided with spring restraining groove a above valve bonnet 1, and valve bonnet 1 middle part is provided with valve ball guiding groove b; Spring 4 one ends are arranged in spring restraining groove a, and spring 4 the other ends match with valve ball 3 tops; The central hole of valve seat 2 arranges groove, and O type circle 5 is set in groove, and valve ball 3 bottoms touch with O type circle 5 and coordinate, and realizes sealing and accurate measurement.
In order to realize above-mentioned matching relationship, the diameter of O type circle is less than the diameter of valve ball, the spacing of the import below the center hole of valve seat and valve bonnet is less than the radius of valve ball, and the diameter of spring restraining groove is less than the diameter of valve ball guiding groove, and the diameter of valve ball is less than the diameter of valve ball guiding groove; In order to guarantee the serviceability of O type circle, in the present embodiment, O type circle adopts fluorine rubber to make.
The utility model arranges O type circle in valve base center hole place groove, so just well solved because valve ball and valve seat directly clash into, and makes valve seat lose the drawback of original precision; Because fluororubber O-type ring is flexible, avoided the very stiff and demanding of valve ball and valve seat, simultaneously due under the effect of the pretightening force of valve ball upper springs, make the extraordinary close contact of valve ball and valve seat energy, more be conducive to sealing than existing design, make the measuring accuracy of metering pump once advance to be improved.When fluororubber O-type ring damaged or do not reach measuring accuracy due to other reason, the user was just passable as long as change fluororubber O-type ring, and the fluororubber O-type ring price is very cheap, need not whole valve seat integral replacing.
Working procedure: liquid enters from valve base center hole, overcomes initial tension of spring and pushes valve ball open, flows out from the valve bonnet central small hole.Spring can only be done the linear telescopic motion because of the valve ball guiding groove that arranges in valve bonnet, guaranteed that also valve ball can well reset, and well contacts with O type circle.When liquid enters the other way around, due to valve ball and the sealing of O type circle, well stoped liquid countercurrent.
Claims (6)
1. a metering pump one-way valve, comprise valve seat, valve bonnet, valve ball and spring, and valve seat is connected by external fixator with valve bonnet, it is characterized in that being provided with the spring restraining groove above described valve bonnet, is provided with the valve ball guiding groove in the middle part of valve bonnet; Described spring one end is arranged in the spring restraining groove, and the spring the other end matches with valve ball top; The central hole of described valve seat arranges groove, and O type circle is set in groove, and described valve ball bottom touches with described O type circle and coordinates.
2. a kind of metering pump one-way valve according to claim 1, is characterized in that the diameter of described O type circle is less than the diameter of valve ball.
3. a kind of metering pump one-way valve according to claim 1 is characterized in that the spacing of import of the center hole of described valve seat and valve bonnet below is less than the radius of valve ball.
4. a kind of metering pump one-way valve according to claim 1, is characterized in that the diameter of described spring restraining groove is less than the diameter of valve ball guiding groove.
5. a kind of metering pump one-way valve according to claim 1, is characterized in that the diameter of described valve ball is less than the diameter of valve ball guiding groove.
6. a kind of metering pump one-way valve according to claim 1 and 2, is characterized in that described O type circle adopts fluorine rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611925 CN202954961U (en) | 2012-11-19 | 2012-11-19 | One-way valve of metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611925 CN202954961U (en) | 2012-11-19 | 2012-11-19 | One-way valve of metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954961U true CN202954961U (en) | 2013-05-29 |
Family
ID=48460537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220611925 Expired - Fee Related CN202954961U (en) | 2012-11-19 | 2012-11-19 | One-way valve of metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511245A (en) * | 2013-10-08 | 2014-01-15 | 杭州大潮石化设备有限公司 | Check valve structure capable of being rapidly disassembled and assembled |
| CN113653836A (en) * | 2021-08-20 | 2021-11-16 | 德帕姆(杭州)泵业科技有限公司 | Reciprocating pump with one-way valve structure and reliable operation |
-
2012
- 2012-11-19 CN CN 201220611925 patent/CN202954961U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511245A (en) * | 2013-10-08 | 2014-01-15 | 杭州大潮石化设备有限公司 | Check valve structure capable of being rapidly disassembled and assembled |
| CN103511245B (en) * | 2013-10-08 | 2016-04-06 | 杭州大潮石化设备有限公司 | The one-way valve structures of fast demountable |
| CN113653836A (en) * | 2021-08-20 | 2021-11-16 | 德帕姆(杭州)泵业科技有限公司 | Reciprocating pump with one-way valve structure and reliable operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG AILIPU TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHEJIANG AILIPU PUMP CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 317100 No. 2 Jin Yuan Road, Binhai New Town, sea town, three counties, Zhejiang Patentee after: ZHEJIANG AILIPU TECHNOLOGY CO., LTD. Address before: 317199, No. 2, South Road, Binhai New Town, three counties, Taizhou, Zhejiang Patentee before: Zhejiang Ailipu Pump Co., Ltd. |
|
| 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: 20130529 Termination date: 20171119 |