CN102052291B - For the one-way valve of metering pump - Google Patents
For the one-way valve of metering pump Download PDFInfo
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- CN102052291B CN102052291B CN201110020144.XA CN201110020144A CN102052291B CN 102052291 B CN102052291 B CN 102052291B CN 201110020144 A CN201110020144 A CN 201110020144A CN 102052291 B CN102052291 B CN 102052291B
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- liquid
- valve plug
- movable valve
- quiet spool
- metering pump
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Abstract
The present invention discloses a kind of one-way valve for metering pump, it comprises the measurement volume be opened in the pump housing and the gland be sealed in measurement volume, liquid entering hole and liquid outlet is offered in described measurement volume, also be provided with in described measurement volume and the close-fitting movable valve plug of its inwall and quiet spool, the honeycomb duct be connected with liquid entering hole is offered in described quiet spool, spring is provided with between described movable valve plug and gland, and the joint place of described movable valve plug and quiet spool is provided with rubber seal, corresponding rubber seal is provided with triangular ring seal boss on quiet spool, the above-mentioned one-way valve for metering pump is when having the liquid of pressure in metering pump by the honeycomb duct of quiet spool, utilize the pressure of liquid, promotion movable valve plug moves, open one-way valve liquid to flow out from liquid outlet, not only structure is simple, be easy to realize, and good stability, control accuracy is high.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of for metering pump can the one-way valve of fluid pressure in control pump.
Background technique
Selective catalytic reduction system operating SCR (Selective Catalyst Reduction) is a processing system to downstream working medium, its principle is exactly spray into ammonia in containing the tail gas of NOx, urea or other nitrogen-containing compound, make NOx wherein be reduced into N2 and water, be used at present in diesel engine vent gas processing procedure.
Selective catalytic reduction system operating SCR must accurately control to spray into ammonia, the straying quatity of urea or other nitrogen-containing compound, to remove NOx to greatest extent, therefore metering pump becomes the requisite constituent element of selective catalytic reduction system operating SCR,
As everyone knows, metering pump a kind ofly can meet various strict technological process needs, flow can within the scope of 0-100% step-less adjustment, be used for carrying liquid (particularly corrosive liquids) a kind of special displacement pump, metering pump also claims metering pump or dosing pump, metering pump belongs to reciprocating volumetric pump, for accurate measurement, usually require the steady state accuracy of metering pump be no more than ± 1%.Along with modernization industry is towards the development of 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, at present, be widely used in petrochemical industry, chemical industry, electric power, water treatment, for quantitatively carrying all kinds of chemical additives in all types of industries processes such as pharmacy, but traditional metering pump cannot ensure that the pressure all-the-time stable of liquid in pump is a specific force value, causes metering pump steady state accuracy lower.
Summary of the invention
The object of the present invention is to provide a kind of one-way valve for metering pump, it is simple that it has structure, good stability, the feature that control accuracy is high.
The present invention solves described problem by the following technical solutions:
A kind of one-way valve for metering pump, it comprises the measurement volume be opened in valve body and the gland be sealed in measurement volume, liquid entering hole and liquid outlet is offered in described measurement volume, and be also provided with in described measurement volume and the close-fitting movable valve plug of its inwall and quiet spool, the honeycomb duct be connected with liquid entering hole is offered in described quiet spool, be provided with elastic component between described movable valve plug and gland, and the joint place of described movable valve plug and quiet spool is provided with Sealing.
Especially, described elastic component is spring.
Especially, described Sealing is rubber seal, and corresponding rubber seal is provided with triangular ring seal boss on quiet spool.
Especially, between described gland and measurement volume, be provided with seal ring, between quiet spool and measurement volume inwall, be also provided with seal ring.
Good effect of the present invention is, the described one-way valve for metering pump is when there being the liquid of pressure to enter the honeycomb duct of quiet spool by liquid entering hole in metering pump, utilize liquid to the pressure of movable valve plug, promotion movable valve plug moves, lose the sealing effect to honeycomb duct, open one-way valve liquid and flow out from liquid outlet, thus the fluid pressure all-the-time stable in guarantee metering pump is a specific force value, not only structure is simple, is easy to realize; And good stability, control accuracy is high.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is the structural representation of the present invention for the one-way valve of metering pump.
In figure:
1, valve body; 2, measurement volume; 3, gland; 4, liquid entering hole; 5, liquid outlet; 6, movable valve plug; 7, quiet spool; 8, honeycomb duct; 9, rubber seal; 10, seal boss; 11, spring; 12, seal ring.
Embodiment
Refer to shown in Fig. 1, Fig. 1 is the structural representation of the present invention for the one-way valve of metering pump, in the present embodiment, the described pressure regulator valve for metering pump is urea liquid owing to contacting, therefore material all uses stainless steel, the described one-way valve for metering pump comprises the measurement volume 2 be opened in valve body 1 and the gland 3 be sealed in measurement volume 2, liquid entering hole 4 and liquid outlet 5 is offered in described measurement volume 2, and be also provided with in described measurement volume 2 and the close-fitting movable valve plug of its inwall 6 and quiet spool 7, described movable valve plug 6 and quiet spool 7 are made through quenching by stainless steel, the honeycomb duct 8 be connected with liquid entering hole 5 is offered in described quiet spool 7, spring 11 is provided with between described movable valve plug 6 and gland 3, and described movable valve plug 6 is provided with rubber seal 9 with the joint place of quiet spool 7, corresponding rubber seal 9 is provided with triangular ring seal boss 10 on quiet spool 7, and be provided with seal ring 12 between described gland 3 and measurement volume 2, also seal ring 12 is provided with between quiet spool 7 and measurement volume 2 inwall, to make the good sealing effect of whole one-way valve tool.
The above-mentioned one-way valve for metering pump is when there being the liquid of pressure to enter the honeycomb duct 8 of quiet spool 7 by liquid entering hole 4 in metering pump, utilize liquid to the pressure of movable valve plug 6, promote movable valve plug 6 to move, lose the sealing effect to honeycomb duct 8, open one-way valve liquid to flow out from liquid outlet 5, when there being the liquid of pressure to enter from liquid outlet 5, due to the pressure of liquid, seal boss 10 on rubber seal 9 and quiet spool 7 is fitted tightly, liquid cannot enter honeycomb duct 8, thus the fluid pressure all-the-time stable in guarantee metering pump is a specific force value, not only structure is simple, be easy to realize, and good stability, control accuracy is high.
Claims (3)
1. the one-way valve for metering pump, it comprises the measurement volume be opened in the pump housing and the gland be sealed in measurement volume, liquid entering hole and liquid outlet is offered in described measurement volume, it is characterized in that: be also provided with in described measurement volume and the close-fitting movable valve plug of its inwall and quiet spool, the honeycomb duct be connected with liquid entering hole is offered in described quiet spool, be provided with elastic component between described movable valve plug and gland, and the joint place of described movable valve plug and quiet spool is provided with Sealing;
Be provided with seal ring between described gland and measurement volume, between described quiet spool and measurement volume inwall, be also provided with seal ring;
The honeycomb duct of quiet spool is entered by liquid entering hole when there being the liquid of pressure in metering pump, when the pressure of liquid to movable valve plug is greater than the elastic force of elastic component to movable valve plug, utilize liquid to the pressure of movable valve plug, promotion movable valve plug moves, lose the sealing effect to honeycomb duct, open one-way valve liquid to flow out from liquid outlet, when the pressure of liquid to movable valve plug is less than the elastic force of elastic component to movable valve plug, resilient element urges movable valve plug moves towards the direction of quiet spool, seal boss on rubber seal and quiet spool is fitted tightly, liquid cannot enter honeycomb duct, thus the fluid pressure all-the-time stable in guarantee metering pump is a specific force value.
2. the one-way valve for metering pump according to claim 1, is characterized in that: described elastic component is spring.
3. the one-way valve for metering pump according to claim 1, is characterized in that: described Sealing is rubber seal, and corresponding rubber seal is provided with triangular ring seal boss on quiet spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110020144.XA CN102052291B (en) | 2011-01-18 | 2011-01-18 | For the one-way valve of metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110020144.XA CN102052291B (en) | 2011-01-18 | 2011-01-18 | For the one-way valve of metering pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102052291A CN102052291A (en) | 2011-05-11 |
| CN102052291B true CN102052291B (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110020144.XA Active CN102052291B (en) | 2011-01-18 | 2011-01-18 | For the one-way valve of metering pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN102052291B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649066A (en) * | 2017-10-24 | 2018-02-02 | 江苏永道科技有限公司 | A kind of liquid adjuvants filling apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2613054A (en) * | 1948-07-08 | 1952-10-07 | United States Steel Corp | Pump valve |
| US4518329A (en) * | 1984-03-30 | 1985-05-21 | Weaver Joe T | Wear resistant pump valve |
| CN101113729A (en) * | 2006-07-28 | 2008-01-30 | 詹奇峰 | Automatic unloading one-way valve of air compressor |
| CN101737317A (en) * | 2009-12-09 | 2010-06-16 | 新疆新鑫矿业股份有限公司 | Adjustable-core one-way valve for metering pump |
| CN201554910U (en) * | 2009-12-09 | 2010-08-18 | 上海熊猫机械(集团)有限公司 | Check valve |
| CN201696690U (en) * | 2010-06-01 | 2011-01-05 | 宁波永成双海汽车部件有限公司 | Gas check for car brake booster |
| CN201953637U (en) * | 2011-01-18 | 2011-08-31 | 无锡市凯龙汽车设备制造有限公司 | One-way valve used for metering pump |
-
2011
- 2011-01-18 CN CN201110020144.XA patent/CN102052291B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2613054A (en) * | 1948-07-08 | 1952-10-07 | United States Steel Corp | Pump valve |
| US4518329A (en) * | 1984-03-30 | 1985-05-21 | Weaver Joe T | Wear resistant pump valve |
| CN101113729A (en) * | 2006-07-28 | 2008-01-30 | 詹奇峰 | Automatic unloading one-way valve of air compressor |
| CN101737317A (en) * | 2009-12-09 | 2010-06-16 | 新疆新鑫矿业股份有限公司 | Adjustable-core one-way valve for metering pump |
| CN201554910U (en) * | 2009-12-09 | 2010-08-18 | 上海熊猫机械(集团)有限公司 | Check valve |
| CN201696690U (en) * | 2010-06-01 | 2011-01-05 | 宁波永成双海汽车部件有限公司 | Gas check for car brake booster |
| CN201953637U (en) * | 2011-01-18 | 2011-08-31 | 无锡市凯龙汽车设备制造有限公司 | One-way valve used for metering pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102052291A (en) | 2011-05-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 214000 Jiangsu city in Wuxi Province Economic Development Zone Huishan Qianqiao Temple Tangqiao supporting area Applicant after: Kailong High Technology Co., Ltd. Address before: Huishan District of Jiangsu city of Wuxi province Changan 214174 Street Xin Hui Lu 519-8 Applicant before: Wuxi Kailong Bus Equipment Manufacturing Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: KAILONG AUTOMOBILE EQUIPMENT MANUFACTURING CO., LTD., WUXI CITY TO: KAILONG HIGH TECHNOLOGY CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Check valve for metering pump Effective date of registration: 20210727 Granted publication date: 20150902 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi Xishan branch Pledgor: KAILONG HIGH TECHNOLOGY Co.,Ltd. Registration number: Y2021320010276 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |