CN103174619A - Reciprocating injection type metering pump - Google Patents
Reciprocating injection type metering pump Download PDFInfo
- Publication number
- CN103174619A CN103174619A CN2013101129405A CN201310112940A CN103174619A CN 103174619 A CN103174619 A CN 103174619A CN 2013101129405 A CN2013101129405 A CN 2013101129405A CN 201310112940 A CN201310112940 A CN 201310112940A CN 103174619 A CN103174619 A CN 103174619A
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- CN
- China
- Prior art keywords
- connecting rod
- pump
- injection type
- metering pump
- plunger
- Prior art date
- 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.)
- Pending
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- 238000002347 injection Methods 0.000 title claims abstract description 11
- 239000007924 injection Substances 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 210000000078 claw Anatomy 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000005406 washing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002572 peristaltic effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
Provided is a reciprocating injection type metering pump. The reciprocating injection type metering pump comprises a pump body provided with an inner cavity, an upper pump cover with a liquid inlet and a liquid outlet, a lower pump cover, a one-way valve, a connecting rod and a motor. The connecting rod (5) is arranged in the inner cavity of the pump body (1), the upper end of the connecting rod is connected with a plunger, an O-shaped ring (10) is sleeved on the plunger, and the plunger is connected with a post hole in the upper portion of the inner cavity in a sealing and abutting mode. The lower end of the connecting rod extending below the post hole is connected with a control block matched with a guide rail (13) arranged in the lower portion of the inner cavity, and a strip wheel groove (7) is arranged in one side of the control block. A speed-reduction wheel train driven by a motor (2) is fixed on one side of the pump body opposite to the strip wheel groove, a cam (4) is installed on an output shaft (14) of the speed-reduction wheel train, and the end portion of one side of the cam is connected with a control claw extending into the strip wheel groove. Compared with an existing metering pump, the reciprocating injection type metering pump is accurate in metering, simple, compact and reasonable in structure, easy to assemble, free of influence of liquid viscosity, and low in cost, and other additional control devices are not needed.
Description
Technical field
The present invention relates to a kind of washing of drum type washing machine fluid supply pump or similar liquids metering pump, particularly a kind of reciprocal injection type metering pump.
Background technique
At present, gear wheel metering pump or the peristaltic meatering pump of the employing of washing of drum type washing machine liquid conveying and metering pump.Gear wheel metering pump is that two measure-alike gears are arranged in the cavity that pump body is designed to the similar figure of eight, when the wash water that comes from extruder in suction port enters the cavity of two gears, and when being full of this space,, when two gears engagements, it is discharged at last along the rotatablely moving of cavity along with gear.Because two gears can have a bit gap when meshing and between gear avris and cavity inner wall, so in the situation that wash water viscosity is large, the leakage that the gap produces will be lacked, but in the situation that wash water viscosity is low, the leakage of generation is more.Therefore its metering delivery precision is relatively poor, and complex structure, fabricating cost is high.Simultaneously, because wash water viscosity is that variation along with temperature changes, use the season of washing machine and the temperature difference in area can cause the unstable of wash water viscosity, therefore, complete system plant has to increase a temperature transducer and compensates for addressing this problem.Peristaltic meatering pump adopts the driven by motor cam to prolong with a direction squeezing tube, because the incomplete sealing of flexible pipe is different with the tension force under each fluid viscosity, and along with the wearing and tearing of flexible pipe, thereby cause the poor problem of delivery precision of measuring.
Summary of the invention
The object of the present invention is to provide a kind of metering delivery precision high, and simple in structure, the reciprocal injection type metering pump that fabricating cost is low.
Its technological scheme is: a kind of reciprocal injection type metering pump, comprise the pump housing that is provided with inner chamber, be provided with bring into, the upper pump cover of liquid outlet, lower pump cover, one-way valve, connecting rod and motor, it is characterized in that: the inner chamber of the described pump housing is provided with connecting rod, the upper end of connecting rod is connected with plunger, and suit O type circle on plunger is with the post hole sealing butt on inner chamber top; The connecting rod lower end that extends in below, post hole connects a controll block that matches with the guide rail of inner chamber bottom setting, one side of controll block is provided with the strip race, be fixed with by motor-driven deceleration train on the pump housing one side relative with the strip race, on the output shaft of deceleration train, cam is installed, the end disjunctor of cam one side has the control claw that extends in the strip race.
Its beneficial effect is: the plunger seal that is connected with small end due to the post hole of taking pump housing inner chamber top coordinates, the control claw that is arranged on motor output shaft overhead cam one side coordinates with strip race contact on controll block that the connecting rod lower end is connected, therefore when the driven by motor cam rotates, the control claw of cam one side is namely made linear reciprocation up and down at drivening rod under the effect of strip race and is moved: when the cam driven connecting rod moves down, form negative pressure in the post hole, thereby wash water is sucked from liquid entering hole; When the cam driven connecting rod moved up, the wash water that the plunger of interlinking lever end will suck in the post hole was outwards extruded by liquid outlet, and motor often rotates a circle and is flow one time, and just as injector, the liquid one-in-and-one-out is taken out notes and so forth.Therefore, as long as control the current"on"time of motor, can measure accurately wash water.Compare with the flexible pipe peristaltic meatering pump with existing gear wheel metering pump, its structure is simpler and more direct, compact, rationally, and assembling is more prone to, and the neither impact of liquid body viscosity, need not again other control gear of extra increase again, and is with low cost.
Description of drawings
Fig. 1 is stereogram of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 3;
Fig. 5 is the structural representation of one-way valve;
Fig. 6 is the C-C sectional view of Fig. 5.
Embodiment
As shown in Fig. 1-4, a kind of reciprocal injection type metering pump comprises the pump housing 1 that is provided with inner chamber, be provided with bring into, the upper pump cover 3 of liquid outlet, lower pump cover 6, one-way valve, connecting rod 5 and motor 2.The inner chamber of the described pump housing is provided with connecting rod 5, and the upper end of connecting rod is connected with plunger, and suit O type circle 10 on plunger is with the post hole sealing butt on inner chamber top; The connecting rod lower end that extends in below, post hole connects a controll block that matches with the guide rail 13 of inner chamber bottom setting, one side of controll block is provided with strip race 7, be fixed with the deceleration train that is driven by motor 2 on the pump housing one side relative with the strip race, on the output shaft 14 of deceleration train, cam 4 is installed, the end disjunctor of cam one side has the control claw that extends in the strip race.
Above-mentioned one-way valve consists of (seeing Fig. 5,6) by rubber film and plastic support; Offer the arcuate socket that two groups of same circular holes and circular hole add on plastic support 11 outward; Rubber film 9 is the umbrella that an end is upturned, and the arcuate socket 12 that its external diameter adds outward greater than circular hole on plastic support is realized sealing to the arcuate socket that circular hole adds outward.The other end of rubber film is provided with 91, two rubber films of boss and passes circular hole reverse being arranged on plastic support each other on plastic support by boss respectively.Plastic support is arranged between the top and upper pump cover 3 of pump housing cavity, by 8 sealings of O type circle.When under the effect of the cam in the pump housing at motor, drivening rod moves down, form negative pressure in the post hole, be arranged on a rubber film on plastic support at the effect lower seal arcuate socket of negative pressure, another rubber film makes its umbrella end distortion under the effect of negative pressure, thereby open the arcuate socket on it, wash water is sucked the post hole from liquid entering hole in; When the cam driven connecting rod moves up, the wash water that the plunger of interlinking lever end will suck in the post hole upwards squeezes, under the promotion of liquid stream, the umbrella end that makes it that rubber film of front distortion restores, with the arcuate socket sealing that is opened, be opened by the arcuate socket of rubber film umbrella end sealing, the wash water that will extrude in the post hole is discharged from by liquid outlet before.Two each other reverse rubber film alternately open, seal, coordinate moving up and down of pump housing inside connecting rod, realize liquid back and forth taken out notes.
Claims (2)
1. reciprocal injection type metering pump, comprise the pump housing that is provided with inner chamber, be provided with bring into, the upper pump cover of liquid outlet, lower pump cover, one-way valve, connecting rod and motor, it is characterized in that: the inner chamber of the described pump housing (1) is provided with connecting rod (5), the upper end of connecting rod is connected with plunger, and suit O type circle (10) on plunger is with the post hole sealing butt on inner chamber top; The connecting rod lower end that extends in below, post hole connects a controll block that matches with the guide rail (13) of inner chamber bottom setting, one side of controll block is provided with strip race (7), be fixed with the deceleration train that is driven by motor (2) on the pump housing one side relative with the strip race, cam (4) is installed on the output shaft of deceleration train (14), and the end disjunctor of cam one side has the control claw that extends in the strip race.
2. a kind of reciprocal injection type metering pump according to claim 1, it is characterized in that: described one-way valve is made of rubber film and plastic support, offers the arcuate socket (12) that two groups of same circular holes and circular hole add on plastic support (11) outward; Rubber film (9) is the umbrella that an end is upturned, the arcuate socket that its external diameter adds outward greater than circular hole on plastic support, the other end of rubber film is provided with boss (91), and two rubber films pass circular hole reverse being arranged on plastic support each other on plastic support by boss respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101129405A CN103174619A (en) | 2013-04-02 | 2013-04-02 | Reciprocating injection type metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101129405A CN103174619A (en) | 2013-04-02 | 2013-04-02 | Reciprocating injection type metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103174619A true CN103174619A (en) | 2013-06-26 |
Family
ID=48634715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101129405A Pending CN103174619A (en) | 2013-04-02 | 2013-04-02 | Reciprocating injection type metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103174619A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105031773A (en) * | 2015-08-27 | 2015-11-11 | 南京润泽流体控制设备有限公司 | Double-head continuous sample feeding device |
| CN105484964A (en) * | 2016-01-08 | 2016-04-13 | 成都市天仁自动化科技有限公司 | Metering type outlet liquid metering system of automatic liquid selling machine pump and metering method thereof |
| CN108119323A (en) * | 2018-02-06 | 2018-06-05 | 安徽仁智电子科技有限公司 | Plunger type metering pump |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267470A (en) * | 1988-09-02 | 1990-03-07 | Nikkiso Co Ltd | Nonpulsating quantitative pump |
| EP0433649A1 (en) * | 1989-11-17 | 1991-06-26 | ASKOLL S.p.A. | Fluid metering pump |
| JP2000274374A (en) * | 1999-03-24 | 2000-10-03 | Kasei Optonix Co Ltd | Small pump |
| CN201144773Y (en) * | 2007-12-19 | 2008-11-05 | 广州星田食品有限公司 | Fine adjustment quantitative food slurry delivery pump |
| CN201363462Y (en) * | 2009-03-23 | 2009-12-16 | 贵州航天林泉电机有限公司 | Sealing structure of one-way valve |
| CN201884236U (en) * | 2010-09-06 | 2011-06-29 | 德帕姆(杭州)泵业科技有限公司 | Piston type metering pump |
| CN102518573A (en) * | 2011-12-14 | 2012-06-27 | 江南大学 | Adjustable quantitative injection pump |
| CN203146260U (en) * | 2013-04-02 | 2013-08-21 | 合肥日上电器有限公司 | Reciprocating-injection type metering pump |
-
2013
- 2013-04-02 CN CN2013101129405A patent/CN103174619A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267470A (en) * | 1988-09-02 | 1990-03-07 | Nikkiso Co Ltd | Nonpulsating quantitative pump |
| EP0433649A1 (en) * | 1989-11-17 | 1991-06-26 | ASKOLL S.p.A. | Fluid metering pump |
| JP2000274374A (en) * | 1999-03-24 | 2000-10-03 | Kasei Optonix Co Ltd | Small pump |
| CN201144773Y (en) * | 2007-12-19 | 2008-11-05 | 广州星田食品有限公司 | Fine adjustment quantitative food slurry delivery pump |
| CN201363462Y (en) * | 2009-03-23 | 2009-12-16 | 贵州航天林泉电机有限公司 | Sealing structure of one-way valve |
| CN201884236U (en) * | 2010-09-06 | 2011-06-29 | 德帕姆(杭州)泵业科技有限公司 | Piston type metering pump |
| CN102518573A (en) * | 2011-12-14 | 2012-06-27 | 江南大学 | Adjustable quantitative injection pump |
| CN203146260U (en) * | 2013-04-02 | 2013-08-21 | 合肥日上电器有限公司 | Reciprocating-injection type metering pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105031773A (en) * | 2015-08-27 | 2015-11-11 | 南京润泽流体控制设备有限公司 | Double-head continuous sample feeding device |
| CN105031773B (en) * | 2015-08-27 | 2019-02-01 | 南京润泽流体控制设备有限公司 | Double end continuous sampling device |
| CN105484964A (en) * | 2016-01-08 | 2016-04-13 | 成都市天仁自动化科技有限公司 | Metering type outlet liquid metering system of automatic liquid selling machine pump and metering method thereof |
| CN105484964B (en) * | 2016-01-08 | 2017-12-22 | 成都市天仁自动化科技有限公司 | Automatic selling liquid pump metering-type goes out liquid metering system and its metering method |
| CN108119323A (en) * | 2018-02-06 | 2018-06-05 | 安徽仁智电子科技有限公司 | Plunger type metering pump |
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| PB01 | Publication | ||
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Application publication date: 20130626 |