CN105927496A - Single-link linkage dual valve body metering pump - Google Patents
Single-link linkage dual valve body metering pump Download PDFInfo
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- CN105927496A CN105927496A CN201510798869.XA CN201510798869A CN105927496A CN 105927496 A CN105927496 A CN 105927496A CN 201510798869 A CN201510798869 A CN 201510798869A CN 105927496 A CN105927496 A CN 105927496A
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Abstract
The invention discloses a single-link linkage dual valve body metering pump, which is structured as such that an air cylinder 1 is fixed on a cylinder body holder 2 and connected with a metering pump cylinder body holder 7 and a linkage plate 4 respectively through a guide rod 5 and an air cylinder plunger 3. Upper ends of an A plunger 20 and a B plunger 8 are fixed at two ends of the linkage plate respectively to be assembled integrally in parallel. Connecting portions of the plungers with cylinder bodies are both provided with sealing combination. Left and right sides of the A cylinder body and the B cylinder body are provided with feed openings 9. Bottoms of an A cylinder sleeve 19 and a B cylinder sleeve 10 are connected respectively with an A one-way valve body 16 and a B one-way valve body 14. In the B one-way valve body, a B one-way valve assembly 11 is connected with the bottom of the B cylinder sleeve. In the A one-way valve body, an A valve seat 18 is connected with the bottom of the cylinder sleeve 19, and an A valve core 17 is connected on the A valve seat. The invention effectively prevents the leakage of the metering pump, improves the metering accuracy and stability, and extends the service life of the metering pump by adopting multi-stage sealing combination and a single-link linkage dual valve body structure.
Description
Technical field
The present invention relates to a kind of dosing pump assembly, particularly relate to a kind of convection cell and carry out single connection-rod linkage dual-valve body dosing pump of metering distribution.
Background technology
Dosing pump is the device that convection cell carries out measuring and pumping metering, has the biggest market demand in fields such as chemical industry, the energy, machinery, papermaking, pharmacy and is widely applied.Along with the development of modern industrial technology, the requirement to aspects such as dosing pump metering accuracy, functional reliability, Adaptability of medium, corrosion-resistant, service lifes is more and more higher.Dosing pump mainly includes plunger type metering pump and diaphragm metering pump two types at present, is regulated the flow of liquid by control plunger or the reciprocating frequency of diaphragm.But, dosing pump is easily subject to the impact of external condition when drawing liquid, such as the bubble in liquid level, liquid, unidirectional valve opening pressure etc., thus reduces measuring accuracy and the stability of dosing pump.In addition, plunger type metering pump is typically provided with black box between plunger and pump head cylinder body, the pretightning force that black box produces needs moderate strength, the too strong abrasion the most easily accelerating plunger and black box of pretightning force, too small, easily cause liquid leakage, and liquid extended residual easily causes corrosion at plunger surface, reduce the service life of dosing pump.Single connection-rod linkage dual-valve body dosing pump that the present invention proposes advantageously accounts for above-mentioned deficiency, improves measuring accuracy and the service life of dosing pump.
Summary of the invention
It is an object of the present invention to provide a kind of single connection-rod linkage dual-valve body dosing pump, be primarily adapted for use in convection cell and carry out metering distribution and pumping metering, significantly improve its sealing property and measuring accuracy, extend its service life.
The technical solution used in the present invention is: a kind of single connection-rod linkage dual-valve body dosing pump includes: cylinder, interlock plate, cylinder body, plunger, charging aperture, check valve assembly, check valve body and discharging opening etc..Its technical scheme is: cylinder is fixed on cylinder rack, is connected with dosing pump cylinder rack and interlock plate respectively by guide rod, cylinder plunger.
A, B two the upper end of plunger be separately fixed at the two ends of interlock plate and be assembled into one, plunger lower end is positioned at cylinder body, and cylinder body is fixed on dosing pump cylinder rack.Two plungers are equipped with seal combination with the junction of cylinder body, seal including upper cover, sealing group ring and scraper, and the left and right sides at A, B cylinder body is respectively equipped with charging aperture, is all connected with cylinder sleeve between cylinder body and plunger.Being connected with A, B check valve body respectively bottom A, B cylinder sleeve, in B check valve body, B check valve assembly is connected bottom B cylinder sleeve, in the bottom of core assembly equipped with spring.In A check valve body, A valve seat is connected with bottom cylinder sleeve, and A spool is connected on A valve seat, is also equipped with spring bottom spool.A, B two the left and right sides of check valve body be respectively equipped with discharging opening, be additionally provided with drain hole at A, B seat bottom portion.
According to described composition, be assembled into one in parallel A, B two plunger can move under the effect of interlock plate simultaneously, and control at sustained height the most simultaneously.Two kinds of fluids enter in A, B cylinder by the charging aperture of side of cylinder block respectively, can regulate the proportioning of two kinds of fluids according to the diameter ratio of two plungers and cylinder sleeve.
In described single connection-rod linkage dual-valve body dosing pump, plunger and cylinder body junction equipped with seal combination in upper cover, sealing group ring and scraper seal compact siro spinning technology successively, when sealing group ring and scraper can regulate the height of upper cover when sealing and cause mild wear, again realize the sealing of dosing pump, improve anti-wear performance and the service life of equipment.When described scraper seals and sealing group ring can effectively prevent spool from rising, solution remains in core surface, reduces the extent of corrosion of spool face.Meanwhile, seal combination has certain length, has good guide effect to plunger.
In described single connection-rod linkage dual-valve body dosing pump, the drain hole that A, B seat bottom portion is provided with can be used for experiment sampling checking A, B two Sets of Measurement pump metering precision it can also be used to emptying dosing pump in air or unnecessary feed liquid.
The present invention has the advantage that with good effect: described a kind of single connection-rod linkage dual-valve body dosing pump simple in construction, manufacture simplicity, use multi-stage sealed combination, O RunddichtringO assembly and single connection-rod linkage dual-valve body formula structure, not only effectively prevent dosing pump to reveal, improve sealing property, further improve measuring accuracy and the stability of dosing pump, extend service life.
Accompanying drawing explanation
Shown accompanying drawing 1 is the structural principle schematic diagram of the present invention.
Shown accompanying drawing 2 is the external structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 and accompanying drawing 2, further illustrated principle and the structure of the present invention by embodiment.A kind of single connection-rod linkage dual-valve body dosing pump, its concrete structure consists of: cylinder 1 is fixed on cylinder rack 2, is connected with dosing pump cylinder rack 7 and interlock plate 4 respectively by guide rod 5, cylinder plunger 3.The upper end of A plunger 20 and B plunger 8 is separately fixed at the two ends of interlock plate 4 and is assembled into one, and plunger lower end is positioned at cylinder body 6, and cylinder body 6 is fixed on cylinder rack 7.Two plungers are equipped with seal combination with the junction of cylinder body, seal 21 including upper cover 23, sealing group ring 22 and scraper, and the left and right sides at A, B cylinder body is respectively equipped with charging aperture 9, is connected with A cylinder sleeve 19 and B cylinder sleeve 10 between cylinder body and plunger respectively.A, it is connected with A check valve body 16 and B check valve body 14 respectively bottom B cylinder sleeve, in B check valve body 14, B check valve assembly 11 is connected bottom B cylinder sleeve 10, in the bottom of core assembly equipped with spring 12, in A check valve body 16, A valve seat 18 is connected bottom A cylinder sleeve 19, and A spool 17 is connected on A valve seat 18, is also equipped with spring bottom spool.A, B two the left and right sides of check valve body be respectively equipped with discharging opening 13, be additionally provided with drain hole 15 at A, B seat bottom portion.
A, B two plunger be assembled into one in parallel by interlock plate, can move under the effect of interlock plate simultaneously, and control at sustained height the most simultaneously.Two kinds of fluids enter in A, B cylinder by the charging aperture of side of cylinder block respectively, can regulate the proportioning of two kinds of fluids according to the diameter ratio of two plungers and cylinder sleeve.
Plunger and cylinder body junction equipped with seal combination in, upper cover, sealing group ring and scraper seal compact siro spinning technology successively, when sealing group ring and scraper sealing being caused mild wear due to the upper and lower motion of plunger, the height of upper cover can be regulated, again realize the sealing of dosing pump, improve anti-wear performance and the service life of equipment.When described scraper seals and sealing group ring can effectively prevent spool from rising, solution remains in core surface, reduces the extent of corrosion of spool face.Meanwhile, seal combination has certain length, has good guide effect to plunger.A, B two the junction of cylinder sleeve and check valve body be equipped with O RunddichtringO, be also beneficial to improve further the sealing property of dosing pump.
It is respectively arranged with spring, closed mode of can being rebounded by spool after plunger completes a quantitative revolution in the bottom of A, B core assembly.
The drain hole being provided with at A, B seat bottom portion can be used for experiment sampling checking A, B two the metering precision of Sets of Measurement pump it can also be used to the air in emptying dosing pump or unnecessary feed liquid.
During metering distribution and pumping metering, in two kinds of liquid are injected separately into A, B cylinder by the charging aperture of cylinder body both sides after, regulate switching cylinder, A, B two plunger pass through interlock plate and start to move downward under pneumatic action.Now, fluid is made spool move down by the pressure that plunger moves downward, and is formed between valve seat and keep a fixed gap.Fluid is flowed out from discharging opening by the space of spool with valve seat.Time bottom plunger motion to cylinder sleeve, again regulating switching cylinder, make plunger start to move upward, the power that now spool is moved downward by fluid and plunger disappears, and spool is bounce back into initial closed mode by spring.In the uphill process of plunger, fluid continues through charging aperture and has respectively entered in A, B cylinder, and after fluid injection terminates, regulation switching cylinder makes plunger start to move downward, and starts new round metering distribution and pumping quantitative revolution.
Claims (5)
1. a single connection-rod linkage dual-valve body dosing pump, including cylinder, cylinder rack, guide rod, interlock plate, plunger, cylinder sleeve, upper cover, sealing group ring, scraper sealing, charging aperture, check valve assembly, spring, check valve body, discharging opening, drain hole, it is characterized in that: cylinder (1) is fixed on cylinder rack (2), be connected with dosing pump cylinder rack (7) and interlock plate (4) respectively by guide rod (5), cylinder plunger (3)；The upper end of A plunger (20) and B plunger (8) is separately fixed at the two ends of interlock plate and is assembled into one in parallel, and plunger lower end is positioned at cylinder body (6), and cylinder body is fixed on cylinder rack (7)；Plunger is equipped with seal combination with the junction of cylinder body, seals (21) including upper cover (23), sealing group ring (22) and scraper, and the left and right sides at A, B cylinder body is respectively equipped with charging aperture (9), is all connected with cylinder sleeve between cylinder body and plunger；A cylinder sleeve (19) is connected with A check valve body (16) and B check valve body (14) respectively with B cylinder sleeve (10) bottom, and in B check valve body, B check valve assembly (11) is connected bottom B cylinder sleeve, in the bottom of core assembly equipped with spring (12)；In A check valve body, A valve seat (18) is connected with cylinder sleeve (19) bottom, and A spool (17) is connected on A valve seat, is also equipped with spring bottom spool；A, B two the left and right sides of check valve body be respectively equipped with discharging opening (13), be additionally provided with drain hole (15) at A, B seat bottom portion.
2. according to a kind of single connection-rod linkage dual-valve body dosing pump described in claim 1, it is characterized in that A, B plunger controls at sustained height under the effect of interlock plate the most simultaneously, by controlling the diameter of two plungers and cylinder sleeve than the proportioning that can regulate two kinds of fluids.
3. according to a kind of single connection-rod linkage dual-valve body dosing pump described in claim 1, it is characterized in that upper cover, sealing group ring and scraper seal compact siro spinning technology successively, the height of upper cover can regulate.
4. seal according to the sealing group ring described in claim 3 and scraper, it is characterized in that the material that sealing group ring and scraper seal is the politef containing bronze.
5., according to a kind of single connection-rod linkage dual-valve body dosing pump described in claim 1, it is characterized in that at A, the bottom of B core assembly equipped with spring after plunger completes a quantitative revolution, spool can be rebounded closed mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510798869.XA CN105927496A (en) | 2015-11-19 | 2015-11-19 | Single-link linkage dual valve body metering pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510798869.XA CN105927496A (en) | 2015-11-19 | 2015-11-19 | Single-link linkage dual valve body metering pump |
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| Publication Number | Publication Date |
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| CN105927496A true CN105927496A (en) | 2016-09-07 |
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| CN201510798869.XA Pending CN105927496A (en) | 2015-11-19 | 2015-11-19 | Single-link linkage dual valve body metering pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018141235A1 (en) * | 2017-02-06 | 2018-08-09 | 江苏拓创科研仪器有限公司 | Novel constant-pressure constant-speed pump |
| CN108591005A (en) * | 2018-04-10 | 2018-09-28 | 同济大学 | High precision piston pump based on the driving of voice coil motor principle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3419775A1 (en) * | 1984-05-26 | 1985-11-28 | Turmag Turbo-Maschinen-AG Nüsse & Gräfer, 4322 Sprockhövel | Double-acting piston pump |
| CN101658832A (en) * | 2009-09-21 | 2010-03-03 | 天津大学 | Pump-valve integrated metering, mixing and glue injection device |
| CN201755473U (en) * | 2009-01-08 | 2011-03-09 | 广州通泽机械有限公司 | Mechanical type two-glue mixing mechanism |
| CN102875941A (en) * | 2012-09-26 | 2013-01-16 | 广州机械科学研究院有限公司 | Polytetrafluoroethylene sealing material for highly wear-resistant oil cylinder, method for preparing polytetrafluoroethylene sealing material and application of polytetrafluoroethylene sealing material |
| CN103306969A (en) * | 2013-06-20 | 2013-09-18 | 合肥华升泵阀有限责任公司 | Combined sealing device for plunger pump |
| CN204403446U (en) * | 2014-12-19 | 2015-06-17 | 天津市天波科达科技有限公司 | A kind ofly to shunt evenly, without the liquid cyclone of turbulent phenomenon |
| CN205779527U (en) * | 2015-11-19 | 2016-12-07 | 天津内燃机研究所（天津摩托车技术中心） | A kind of single connection-rod linkage dual-valve body dosing pump |
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2015
- 2015-11-19 CN CN201510798869.XA patent/CN105927496A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3419775A1 (en) * | 1984-05-26 | 1985-11-28 | Turmag Turbo-Maschinen-AG Nüsse & Gräfer, 4322 Sprockhövel | Double-acting piston pump |
| CN201755473U (en) * | 2009-01-08 | 2011-03-09 | 广州通泽机械有限公司 | Mechanical type two-glue mixing mechanism |
| CN101658832A (en) * | 2009-09-21 | 2010-03-03 | 天津大学 | Pump-valve integrated metering, mixing and glue injection device |
| CN102875941A (en) * | 2012-09-26 | 2013-01-16 | 广州机械科学研究院有限公司 | Polytetrafluoroethylene sealing material for highly wear-resistant oil cylinder, method for preparing polytetrafluoroethylene sealing material and application of polytetrafluoroethylene sealing material |
| CN103306969A (en) * | 2013-06-20 | 2013-09-18 | 合肥华升泵阀有限责任公司 | Combined sealing device for plunger pump |
| CN204403446U (en) * | 2014-12-19 | 2015-06-17 | 天津市天波科达科技有限公司 | A kind ofly to shunt evenly, without the liquid cyclone of turbulent phenomenon |
| CN205779527U (en) * | 2015-11-19 | 2016-12-07 | 天津内燃机研究所（天津摩托车技术中心） | A kind of single connection-rod linkage dual-valve body dosing pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018141235A1 (en) * | 2017-02-06 | 2018-08-09 | 江苏拓创科研仪器有限公司 | Novel constant-pressure constant-speed pump |
| CN108591005A (en) * | 2018-04-10 | 2018-09-28 | 同济大学 | High precision piston pump based on the driving of voice coil motor principle |
| CN108591005B (en) * | 2018-04-10 | 2019-12-27 | 同济大学 | High-precision plunger pump driven based on voice coil motor principle |
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Application publication date: 20160907 |
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