CN102518573B - Adjustable quantitative injection pump - Google Patents
Adjustable quantitative injection pump Download PDFInfo
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- CN102518573B CN102518573B CN201110416533.4A CN201110416533A CN102518573B CN 102518573 B CN102518573 B CN 102518573B CN 201110416533 A CN201110416533 A CN 201110416533A CN 102518573 B CN102518573 B CN 102518573B
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- injector
- sliding block
- slide block
- rod
- output shaft
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Abstract
The invention relates to an adjustable quantitative injection pump. A speed reduction motor is arranged on a pump body. A rotating block is fixed on an output shaft of the speed reduction motor. An adjusting screw rod vertical to the output shaft of the speed reduction motor is arranged on the rotating block. A sliding block drive pin is arranged on the adjusting screw rod. The axis of the sliding block drive pin is deviated from the axis of the output shaft of the speed reduction motor. The sliding block drive pin is matched in a transverse groove of a sliding block in a sliding mode. The sliding block is matched on a vertical sliding block guide rod in a sliding mode. A vertical drive rod is fixed on the sliding block. The drive rod is connected with a push rod of a syringe through a linkage block. According to the invention, a transmission mechanism of the syringe is formed by the speed reduction motor, the rotating block, the sliding block drive pin, the sliding block and the drive rod and drives the push rod of the syringe to take the piston motion, wherein the sliding block drive pin is arranged on the adjusting screw rod and the eccentricity of the sliding block drive pin relative to the output shaft of the speed reduction motor can be regulated, so that the output of the syringe is regulated. The adjustable quantitative injection pump has simple structure and low cost, is stably and reliable to operate and is simple and convenient to control.
Description
Technical field
The present invention relates to the syringe pump in water quality online auto monitoring device, water sample being sampled, specifically a kind of adjustable quantitative injection pump.
Background technique
What in existing water quality online auto monitoring device, water sample is sampled to main employing is three kinds of micro-injection pump, industrial injection pump and peristaltic pumps etc.
Micro-injection pump is mainly to realize imbibition and discharge opeing by barrier film and plunger form, but pump delivery is fixed, cannot realize on a pump and change pump amount, if just need to more renewing pump, change pump amount realizes, and cost is higher, need multichannel parenteral solution and non-interfering occasion at some, be difficult to meet use needs.
Industrial injection pump adopts electric motor assembly mostly, and the driving mechanism being connected with injector, carry out work by gear transmission mode, because structure is more complicated, sample injection pipeline easily pollutes, and more difficult cleaning, if sample injection system is inhaled empty introducing in the residual pipe of bubble, generally more difficult eliminating completely, causes sample introduction inaccurate, and exist volume larger, control the shortcomings such as trouble.
Peristaltic pump hockets to push and discharge by the elasticity delivery hose to pump and realizes pumping liquid, because flexible pipe is ceaselessly extruded, the working life of flexible pipe is shorter, and the compression degree of flexible pipe can cause the variation of sample size simultaneously, makes the sample introduction degree of accuracy of peristaltic pump not as syringe pump sample introduction.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of adjustable quantitative injection pump is provided, the pump amount of this syringe pump can be adjusted as required, and cost is low.
According to technological scheme of the present invention: a kind of adjustable quantitative injection pump, comprise the pump housing and injector, on the described pump housing, reducing motor is installed, on the output shaft of described reducing motor, be fixed with moving block, adjusting screw rod perpendicular to described reducing motor output shaft is installed on described moving block, slide block driving pin is installed on described adjusting screw rod, the output shaft axis of reducing motor described in the axis runout of described slide block driving pin, described slide block driving pin is slidably fitted in the transverse groove of slide block, described slide block is slidably fitted on vertical slider waveguide rod, on described slide block, be fixed with vertical drive link, described drive link is connected with the push rod of described injector by linkage block, the push rod of described injector is parallel to described drive link.
On described moving block, be provided with vertical slot, described adjusting screw rod is vertically installed in described vertical slot.
In described linkage block, have the caulking groove matching with described injector push-rod head.
The cylindrical shell of described injector is fixed on the described pump housing by injector pressing plate.
On the described pump housing, be fixed with suction valve, expulsion valve and discharge cavity, between described suction valve and described expulsion valve, be provided with suction valve film, between described expulsion valve and described discharge cavity, be provided with expulsion valve film, the liquid outlet of described injector is connected on described expulsion valve by seal ring.
The sensitive switch of controlling syringe pump is installed on the described pump housing, on described sensitive switch, is parallel with hand switch.
Technique effect of the present invention is: the present invention is by the driving mechanism of reducing motor, moving block, slide block driving pin, slide block and drive link composition injector, drive injector push-rod to do piston movement, wherein slide block driving pin is arranged on adjusting screw rod, adjustable slide driving pin is with respect to the throw of eccentric of reducing motor output shaft, thus the output quantity of adjustment injector; The present invention is simple in structure, and cost is low, and stable and reliable operation is controlled easy.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the A-A sectional view in Fig. 1.
Fig. 4 is principle schematic of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
In Fig. 1 ~ Fig. 4, comprise reducing motor 1, sensitive switch 2, moving block 3, adjusting screw rod 4, slide block driving pin 5, slider waveguide rod 6, slide block 7, injector push-rod set screw 8, drive link 9, moving block set screw 10, the pump housing 11, suction port 12, suction valve 13, suction valve film 14, expulsion valve 15, discharge cavity 16, expulsion valve film 17, exhaust port 18, seal ring 19, injector 20, injector pressing plate 21, linkage block set screw 22, linkage block 23, bridge screw 24, hand switch 25, vertical slot 26, transverse groove 27 etc.
As shown in Fig. 1 ~ Fig. 3, the present invention is a kind of adjustable quantitative injection pump, comprises the pump housing 11, and reducing motor 1 is installed on the pump housing 11, on the output shaft of reducing motor 1, is fixed with moving block 3 by moving block set screw 10.On moving block 3, be provided with vertical slot 26, adjusting screw rod 4 perpendicular to reducing motor 1 output shaft is installed in vertical slot 26, slide block driving pin 5 has been threaded on adjusting screw rod 4, the output shaft axis of the axis runout reducing motor 1 of slide block driving pin 5, slide block driving pin 5 bias are arranged on moving block 3.
Slide block driving pin 5 is slidably fitted in the transverse groove 27 of slide block 7, and slide block 7 is slidably fitted on vertical slider waveguide rod 6.Slider waveguide rod 6 has two, is fixed in the pump housing 11.
On slide block 7, be fixed with vertical drive link 9, the upper end of drive link 9 is fixed with linkage block 23 by linkage block set screw 22.In linkage block 23, have the caulking groove matching with injector 20 push rod cups, the push rod of injector 20 is fixed in linkage block 23 by injector push-rod set screw 8, and the push rod of injector 20 is parallel to drive link 9.The cylindrical shell of injector 20 is fixed on the pump housing 11 by injector pressing plate 21 and bridge screw 24.
On the pump housing 11, be fixed with suction valve 13, expulsion valve 15 and discharge cavity 16.On suction valve 13, be provided with suction port 12, discharge on cavity 16 and be provided with exhaust port 18.Between suction valve 13 and expulsion valve 15, be provided with suction valve film 14, between expulsion valve 15 and discharge cavity 16, be provided with expulsion valve film 17, the liquid outlet of injector 20 is connected on expulsion valve 15 by seal ring 19.
The sensitive switch 2 of controlling syringe pump is also installed on the pump housing 11, on sensitive switch 2, is parallel with hand switch 25.Sensitive switch 2 is limit switches, and syringe pump lower is turned off in limited time running to, if rerun, as long as connect and just can make sensitive switch 2 reset being connected in parallel on a hand switch 25 on sensitive switch 2, thereby realization is reruned.The control of syringe pump is as long as connecting a switch by controller control and just can realize the automatic control of syringe pump with parallel connection place of sensitive switch 2.
Working principle of the present invention and working procedure are as follows: as shown in Figure 4, in the time that reducing motor 1 is started working, the moving block 3 being connected on reducing motor 1 output shaft is with movable slider driving pin 5 to move in a circle, slide block driving pin 5 does horizontal slip in slide block 7 transverse grooves 27 simultaneously, the two place's slider waveguide rods 6 that are arranged in the pump housing 11 make slide block 7 move up and down under the effect of power, and drive link 9 drives injector 20 push rods to do upper and lower piston movement by linkage block 23.The driving mechanism being made up of reducing motor 1, moving block 3, slide block 7, slide block driving pin 5, drive link 9 etc., often does a to-and-fro motion, reaches the output liquid of a fixed amount.
Suction valve 13 and expulsion valve 15 are subject to the driving of suction valve film 14 and expulsion valve film 17 and exercise the function of imbibition and discharge opeing.In the time that moving block 3 turns to 180 °, injector 20 sucks liquid through the flexible pipe that is connected to suction port 12, and when moving block 3 turns to 360 °, liquid in injector 20 push rod pushers, discharges liquid by exhaust port 18, can realize a shot.If need to change injector 20, just only need unclamp injector push-rod set screw 8 and bridge screw 24 can easily be changed, injector 20 is connected by a seal ring 19 with valve body, when replacing, needs only injector 20 is extracted from valve body.
Because slide block driving pin 5 is arranged on adjusting screw rod 4, can carry out by adjusting the position of slide block driving pin 5 on adjusting screw rod 4 throw of eccentric of adjusting slider driving pin 5, to reach the amount that regulates each output liquid.In the device starting stage, according to actual needs syringe pump output quantity is adjusted to aequum, or selects the injector of appropriate injection amount.
The present invention is simple in structure, small volume, and cost is low, and stable and reliable operation is controlled easyly, and it is convenient that easily worn part is changed.
Claims (1)
1. an adjustable quantitative injection pump, comprise the pump housing (11) and injector (20), it is characterized in that: reducing motor (1) is installed on the described pump housing (11), on the output shaft of described reducing motor (1), be fixed with moving block (3), adjusting screw rod (4) perpendicular to described reducing motor (1) output shaft is installed on described moving block (3), slide block driving pin (5) is installed on described adjusting screw rod (4), the output shaft axis of reducing motor (1) described in the axis runout of described slide block driving pin (5), described slide block driving pin (5) is slidably fitted in the transverse groove (27) of slide block (7), described slide block (7) is slidably fitted on vertical slider waveguide rod (6), on described slide block (7), be fixed with vertical drive link (9), described drive link (9) is connected with the push rod of described injector (20) by linkage block (23), the push rod of described injector (20) is parallel to described drive link (9),
On described moving block (3), be provided with vertical slot (26), described adjusting screw rod (4) is vertically installed in described vertical slot (26);
In described linkage block (23), have the caulking groove matching with described injector (20) push rod cup;
The cylindrical shell of described injector (20) is fixed on the described pump housing (11) by injector pressing plate (21);
On the described pump housing (11), be fixed with suction valve (13), expulsion valve (15) and discharge cavity (16), between described suction valve (13) and described expulsion valve (15), be provided with suction valve film (14), between described expulsion valve (15) and described discharge cavity (16), be provided with expulsion valve film (17), the liquid outlet of described injector (20) is connected on described expulsion valve (15) by seal ring (19);
The sensitive switch (2) of controlling syringe pump is installed on the described pump housing (11), on described sensitive switch (2), is parallel with hand switch (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110416533.4A CN102518573B (en) | 2011-12-14 | 2011-12-14 | Adjustable quantitative injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110416533.4A CN102518573B (en) | 2011-12-14 | 2011-12-14 | Adjustable quantitative injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102518573A CN102518573A (en) | 2012-06-27 |
| CN102518573B true CN102518573B (en) | 2014-11-26 |
Family
ID=46289605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110416533.4A Active CN102518573B (en) | 2011-12-14 | 2011-12-14 | Adjustable quantitative injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102518573B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866039B (en) * | 2012-10-07 | 2017-07-04 | 哈尔滨辰能工大环保科技股份有限公司 | COD on-line measurement novel sampling devices |
| CN103174619A (en) * | 2013-04-02 | 2013-06-26 | 合肥日上电器有限公司 | Reciprocating injection type metering pump |
| 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106908U (en) * | 1991-06-15 | 1992-06-10 | 郑安犁 | Reciprocating metering medicine-feeding pump without crankshaft mechanism |
| EP0716229B1 (en) * | 1994-12-08 | 1998-06-24 | Abel GmbH & Co., Handels- + Verwaltungsgesellschaft | Double diaphragm pump |
| CN101092953A (en) * | 2007-07-12 | 2007-12-26 | 储岳海 | Flux adjustable high precision diaphragm metering pump without pulsation |
| DE102008040199A1 (en) * | 2008-07-04 | 2010-01-07 | Robert Bosch Gmbh | Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110030646A1 (en) * | 2009-08-10 | 2011-02-10 | Barry Leonard D | Jet exhaust piston engine |
-
2011
- 2011-12-14 CN CN201110416533.4A patent/CN102518573B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106908U (en) * | 1991-06-15 | 1992-06-10 | 郑安犁 | Reciprocating metering medicine-feeding pump without crankshaft mechanism |
| EP0716229B1 (en) * | 1994-12-08 | 1998-06-24 | Abel GmbH & Co., Handels- + Verwaltungsgesellschaft | Double diaphragm pump |
| CN101092953A (en) * | 2007-07-12 | 2007-12-26 | 储岳海 | Flux adjustable high precision diaphragm metering pump without pulsation |
| DE102008040199A1 (en) * | 2008-07-04 | 2010-01-07 | Robert Bosch Gmbh | Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102518573A (en) | 2012-06-27 |
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