CN102052292A - Pressure regulating valve for metering pump - Google Patents
Pressure regulating valve for metering pump Download PDFInfo
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- CN102052292A CN102052292A CN2011100201454A CN201110020145A CN102052292A CN 102052292 A CN102052292 A CN 102052292A CN 2011100201454 A CN2011100201454 A CN 2011100201454A CN 201110020145 A CN201110020145 A CN 201110020145A CN 102052292 A CN102052292 A CN 102052292A
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- metering pump
- valve body
- measurement volume
- pressure
- adjusting
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Abstract
The invention discloses a pressure regulating valve for a metering pump. The valve comprises a metering holding cavity arranged in a valve body and a regulating gland fixed outside the metering holding cavity, wherein a liquid inlet and a liquid outlet are formed in the metering holding cavity; the metering holding cavity is also internally provided with a lower valve body which is sealed with the inner wall of the metering holding cavity; the lower valve body is provided with a guide channel which is communicated with the liquid inlet and the liquid outlet; one end, which is positioned the liquid outlet, of the guide channel is provided with a valve core; the valve core is connected with one end of a spring; the other end of the spring is connected with a pressure regulating rod and is assembled on the regulating gland; the pressure regulating rod is provided with a regulating nut; and the pressure regulating valve of the metering pump can ensure the liquid pressure in the metering pump to be maintained at a specific pressure value, and the pressure value of liquid circulation in the metering pump can be changed through changing the telescope quantity of an elastic piece, the pressure regulating valve for the metering pump not only has the advantages of simple structure, good stability and high accuracy, and is easy to realize.
Description
Technical field
The present invention relates to a kind of modulating valve, particularly relate to a kind of pressure regulator valve that is used for metering pump.
Background technique
Selective catalytic reduction system operating SCR (Selective Catalyst Reduction) is a processing system to downstream working medium, its principle is exactly to 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 the diesel engine vent gas processing procedure.
Selective catalytic reduction system operating SCR must accurately control and spray into ammonia, the straying quatity of urea or other nitrogen-containing compound, so that remove NOx to greatest extent, so metering pump becomes the requisite constituent element of selective catalytic reduction system operating SCR,
As everyone knows, metering pump is a kind ofly can satisfy various strict process requirementss of process, 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 also claims metering pump or dosing pump, metering pump belongs to reciprocating volumetric pump, is used for accurate measurement, and require the steady state accuracy of metering pump to be no more than usually ± 1%.Along with the continuous 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, at present, be widely used in petrochemical industry, chemical industry, electric power, water treatment, be used for quantitatively carrying all kinds of chemical additivess in all types of industries processes such as pharmacy, but traditional metering pump can't guarantee that the pressure all-the-time stable of liquid in the pump a specific force value, causes the metering pump steady state accuracy lower.
Summary of the invention
The object of the present invention is to provide a kind of pressure regulator valve that is used for metering pump, it has simple in structure, and steady state accuracy height and pressure can freely regulated characteristics.
The present invention solves described problem by the following technical solutions:
A kind of pressure regulator valve that is used for metering pump, it comprises measurement volume that is opened in the valve body and the adjusting gland that is sealingly fastened in outside the measurement volume, offer liquid entering hole and liquid outlet in the described measurement volume, and also be provided with following valve body in the described measurement volume with the measurement volume inner wall sealing, offer the honeycomb duct that is connected with liquid entering hole and liquid outlet on the valve body under described, the end that described honeycomb duct is positioned at liquid outlet is provided with spool, described spool connects an end of elastic component, and the other end of described elastic component connects the elastic force controlling device and is assemblied on the adjusting gland.
Especially, described elastic force controlling device comprises the spring adjustable lever, and described spring adjustable lever connects elastic component with respect to the other end that connects spool, and described spring adjustable lever is connected with pressure adjusting lever, be equipped with the adjusting nut on the described pressure adjusting lever, and described spring adjustable lever is arranged with sliding sleeve outward.
Especially, described elastic component is a spring.
Especially, described adjusting gland is sealingly fastened in outside the measurement volume by fixing bolt.
Especially, between described adjusting gland and the valve body, between following valve body and the measurement volume inwall, between sliding sleeve and the adjusting gland, be provided with seal ring between spring adjustable lever and the sliding sleeve.
Good effect of the present invention is, the described pressure regulator valve that is used for metering pump enters down the honeycomb duct of valve body by liquid entering hole when the liquid of metering pump, utilize the pressure of liquid to spool, the promotion spool moves up, lose sealing effect to honeycomb duct, liquid is sent into liquid outlet from honeycomb duct, thereby the fluid pressure all-the-time stable in the assurance metering pump is a specific force value, and can be arranged at adjusting nut on the pressure adjusting lever by adjusting, change the extending amount of elastic component, thereby the force value of liquid circulation is not only simple in structure in the change metering pump, is easy to realize; And good stability, the precision height.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is used for the structural representation of the pressure regulator valve of metering pump for the present invention.
Among the figure:
1, valve body; 2, measurement volume; 3, regulate gland; 4, fixing bolt; 5, liquid entering hole; 6, liquid outlet; 7, following valve body; 8, honeycomb duct; 9, spool; 10, spring; 11, spring adjustable lever; 12, regulate nut; 13, pressure adjusting lever; 14, sliding sleeve; 15, seal ring.
Embodiment
See also shown in Figure 1, Fig. 1 is used for the structural representation of the pressure regulator valve of metering pump for the present invention, in present embodiment, the described pressure regulator valve of metering pump that is used for is owing to contact is a urea liquid, therefore material is all used stainless steel, it comprises the measurement volume 2 that is opened in the valve body 1 and regulates gland 3, described adjusting gland 3 is sealingly fastened in outside the measurement volume 2 by fixing bolt 4, and be provided with seal ring 15 between described adjusting gland 3 and the valve body 1, offer liquid entering hole 5 and liquid outlet 6 in the described measurement volume 2, described liquid entering hole 5 and liquid outlet 6 all with metering pump in flow channel for liquids be connected, and also be provided with following valve body 7 in the described measurement volume 2 with measurement volume 2 inner wall sealings, be provided with seal ring 15, the good sealing effect of tool between described valve body 7 down and measurement volume 2 inwalls.
Offer the honeycomb duct 8 that is connected with liquid entering hole 5 and liquid outlet 6 on the valve body 7 under described, the end that described honeycomb duct 8 is positioned at liquid outlet 6 is provided with spool 9, described spool 9 is made through quenching by stainless steel, one end of described spool 9 connects spring 10, the other end of described spring 10 connects spring adjustable lever 11, described spring adjustable lever 11 connects pressure adjusting lever 13, be equipped with on the described pressure adjusting lever 13 and regulate nut 12, by regulating nut 12, spring adjustable lever 11, with pressure adjusting lever 13 spool 9 is assemblied on the adjusting gland 3, and the described spring adjustable lever 11 outer sliding sleeves 14 that are arranged with, between described sliding sleeve 14 and the adjusting gland 3, be provided with seal ring 15 between spring adjustable lever 11 and the sliding sleeve 14.
When the above-mentioned pressure regulator valve that is used for metering pump is adjusted to required pressure, it is locked to regulate nut 12, when the liquid of metering pump enters down the honeycomb duct 8 of valve body 7 by 5 mouthfuls of feed liquors among, utilize the pressure of liquid to spool 9, the elastic force that promotion spool 9 overcomes spring 10 moves up, when spool 9 loses sealing effect to honeycomb duct 8, liquid is sent into liquid outlet 5 from honeycomb duct 8, thereby the fluid pressure all-the-time stable in the assurance metering pump is a specific force value, when needing to adjust metering pump internal pressure value, can be arranged at adjusting nut 12 on the pressure adjusting lever 11 by adjusting, change the decrement of spring 10, thereby the force value of liquid circulation is not only simple in structure in the change metering pump, is easy to realize; And good stability, the precision height.
Claims (5)
1. pressure regulator valve that is used for metering pump, it is characterized in that: it comprises measurement volume that is opened in the valve body and the adjusting gland that is sealingly fastened in outside the measurement volume, offer liquid entering hole and liquid outlet in the described measurement volume, and also be provided with following valve body in the described measurement volume with the measurement volume inner wall sealing, offer the honeycomb duct that is connected with liquid entering hole and liquid outlet on the valve body under described, the end that described honeycomb duct is positioned at liquid outlet is provided with spool, described spool connects an end of elastic component, and the other end of described elastic component connects the elastic force controlling device and is assemblied on the adjusting gland.
2. the pressure regulator valve that is used for metering pump according to claim 1, it is characterized in that: described elastic force controlling device comprises the spring adjustable lever, described spring adjustable lever connects elastic component with respect to the other end that connects spool, described spring adjustable lever is connected with pressure adjusting lever, be equipped with the adjusting nut on the described pressure adjusting lever, and described spring adjustable lever is arranged with sliding sleeve outward.
3. the pressure regulator valve that is used for metering pump according to claim 1 is characterized in that: described adjusting gland is sealingly fastened in outside the measurement volume by fixing bolt.
4. according to claim 1 and 2 any is used for the pressure regulator valve of metering pump, it is characterized in that: described elastic component is a spring.
5. according to claim 1 and 2 any is used for the pressure regulator valve of metering pump, it is characterized in that: between described adjusting gland and the valve body, between following valve body and the measurement volume inwall, between sliding sleeve and the adjusting gland, be provided with seal ring between spring adjustable lever and the sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100201454A CN102052292A (en) | 2011-01-18 | 2011-01-18 | Pressure regulating valve for metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100201454A CN102052292A (en) | 2011-01-18 | 2011-01-18 | Pressure regulating valve for metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102052292A true CN102052292A (en) | 2011-05-11 |
Family
ID=43956944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100201454A Pending CN102052292A (en) | 2011-01-18 | 2011-01-18 | Pressure regulating valve for metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102052292A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389776A (en) * | 2014-11-21 | 2015-03-04 | 浙江爱力浦科技股份有限公司 | Metering pump inlet pressure difference stabilizing device |
| CN114558199A (en) * | 2020-11-27 | 2022-05-31 | 厄比电子医学有限责任公司 | Pump unit for medical purposes |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0339770A2 (en) * | 1988-03-30 | 1989-11-02 | Videojet Systems International, Inc. | Ink control supply assembly for an ink jet printer |
| US6029694A (en) * | 1996-11-29 | 2000-02-29 | Robert Bosch Gmbh | Diaphragm pressure regulating valve assembly |
| WO2004038310A1 (en) * | 2002-10-26 | 2004-05-06 | Danfoss A/S | Expansion valve for high-pressure refrigeration systems |
| CN2908949Y (en) * | 2006-03-27 | 2007-06-06 | 吴志文 | Adjustable safety valve |
| CN201027987Y (en) * | 2007-04-29 | 2008-02-27 | 刘敬善 | Exterior-adjusting over-flow seal oil pressure adjusting valve |
| CN101545551A (en) * | 2008-03-26 | 2009-09-30 | 株式会社不二工机 | Pressure control valve |
| CN201953636U (en) * | 2011-01-18 | 2011-08-31 | 无锡市凯龙汽车设备制造有限公司 | Pressure adjusting valve used for metering pump |
-
2011
- 2011-01-18 CN CN2011100201454A patent/CN102052292A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0339770A2 (en) * | 1988-03-30 | 1989-11-02 | Videojet Systems International, Inc. | Ink control supply assembly for an ink jet printer |
| US6029694A (en) * | 1996-11-29 | 2000-02-29 | Robert Bosch Gmbh | Diaphragm pressure regulating valve assembly |
| WO2004038310A1 (en) * | 2002-10-26 | 2004-05-06 | Danfoss A/S | Expansion valve for high-pressure refrigeration systems |
| CN2908949Y (en) * | 2006-03-27 | 2007-06-06 | 吴志文 | Adjustable safety valve |
| CN201027987Y (en) * | 2007-04-29 | 2008-02-27 | 刘敬善 | Exterior-adjusting over-flow seal oil pressure adjusting valve |
| CN101545551A (en) * | 2008-03-26 | 2009-09-30 | 株式会社不二工机 | Pressure control valve |
| CN201953636U (en) * | 2011-01-18 | 2011-08-31 | 无锡市凯龙汽车设备制造有限公司 | Pressure adjusting valve used for metering pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389776A (en) * | 2014-11-21 | 2015-03-04 | 浙江爱力浦科技股份有限公司 | Metering pump inlet pressure difference stabilizing device |
| CN104389776B (en) * | 2014-11-21 | 2016-06-01 | 浙江爱力浦科技股份有限公司 | A kind of volume pump inlet pressure difference stabilizing deyice |
| CN114558199A (en) * | 2020-11-27 | 2022-05-31 | 厄比电子医学有限责任公司 | Pump unit for medical purposes |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C53 | Correction of patent of 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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Application publication date: 20110511 |