CN2610115Y - Pneumatic diaphram metering pump - Google Patents

Pneumatic diaphram metering pump Download PDF

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Publication number
CN2610115Y
CN2610115Y CN 03201226 CN03201226U CN2610115Y CN 2610115 Y CN2610115 Y CN 2610115Y CN 03201226 CN03201226 CN 03201226 CN 03201226 U CN03201226 U CN 03201226U CN 2610115 Y CN2610115 Y CN 2610115Y
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China
Prior art keywords
pump head
pump
valve
adjusting
driving cylinder
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Expired - Fee Related
Application number
CN 03201226
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Chinese (zh)
Inventor
刘晓梅
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Individual
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Individual
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Priority to CN 03201226 priority Critical patent/CN2610115Y/en
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Publication of CN2610115Y publication Critical patent/CN2610115Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an air powered septum measuring pump, which comprises a pump head with a medium tube, a liquid absorbing valve and a liquid discharging valve and a driving cylinder connected with the pump head which is communicated with pressing air source by magnetic valve, wherein the driving cylinder piston rod is fixed and connected with the pump head drive machine of the tank body, the driving cylinder is provided on the top cover with a current adjusting device, the current adjusting device comprises an adjusting button, a tunable screw, a spiral tight screw, an adjusting nut and a dial. The pump measuring is high in accuracy, simple in current adjusting device, which current is employed in a large range and especially suitable for small current. The pump can be extensively employed in batching transportation of every inflammable, rusty or not rusty special medium.

Description

The pneumatic diaphragm metering pump
Technical field the utility model relates to a kind of metering pump, particularly a kind of pneumatic diaphragm metering pump.
Background technique pneumatic diaphragm metering pump of the prior art Flow-rate adjustment mode mainly contains two kinds: a kind of is by regulating the motion frequency that throttle valve changes guiding valve, reach by fixed requirement than transfusion, its deficiency is: because air has compressibility, measuring accuracy is lower; Another kind is the operating frequency realization flow control by pulse signal control selector valve, and measuring accuracy is higher, and its deficiency is: because operating frequency reduces, make the output continuity variation during small flow output, be not suitable for small flow and add occasion.
The technical problem that summary of the invention the utility model is solved is to overcome the deficiencies in the prior art, and the pneumatic diaphragm metering pump that a kind of simple in structure, design and installation is convenient, the small flow output continuity is good, flow Applicable scope is big is provided.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of pneumatic diaphragm metering pump comprises the pump head that has media cavity, liquid sucting valve, liquid discharging valve, communicates with compressed gas source by solenoid valve with the driving cylinder that pump head is fixedly connected; Described driving cylinder: the pump head drive that is provided with in piston rod and the cylinder body is fixedly connected, and end cap is provided with flow control device; Described pump head drive is that piston (or plunger) also can be diaphragm, and described flow control device is made of adjusting knob, adjusting screw rod, knob Cock screw, adjusting nut, dial.
The utility model pneumatic diaphragm metering pump has following beneficial effect compared with prior art:
Can make things convenient for, in 0～100% stroke range, regulate the stroke of pump head drive intuitively by flow control device, make small flow output have better continuity, thereby enlarged the flow Applicable scope of pump.
Description of drawings Fig. 1 is the utility model embodiment 1 a structure sectional view;
Fig. 2 is the utility model embodiment 1 a pneumatic control circuit schematic representation;
Fig. 3 is the utility model embodiment 2 a structure sectional view;
Fig. 4 is the utility model embodiment 2 a pneumatic control circuit schematic representation;
Embodiment is further described the utility model below in conjunction with accompanying drawing and embodiment.
Embodiment 1:
Drive cylinder among Fig. 1 and constitute by cylinder body 10, diaphragm 12, membranous disc 11,13, piston rod 20, end cap 14, Returnning spring 9, pump head drive (piston 21) that is provided with in the cylinder body 10 and piston rod 20 scyewed joint, cylinder body 10 is provided with safety valve 8 assemblies; The flow control device that is provided with on the end cap 14 is made of adjusting knob 19, adjusting screw rod 18, knob Cock screw 17, adjusting nut 15, dial 16; Dial 16 is made of one with adjusting knob 19, and adjusting knob 19 is fastening by knob Cock screw 17 with adjusting screw rod 18; Adjusting nut 15 is slidingly matched with adjusting knob 19, and passes through scyewed joint with adjusting screw rod 18; Barrier diaphragm supporting disc 3,4 is fixing with barrier film 5, and the pump head 2 that has media cavity 23, liquid sucting valve 1, liquid discharging valve 7 is fastening with the cylinder body 10 usefulness screws 6 that drive cylinder, and forming with barrier film 5 is the hydraulic pressure cavity 22 and the media cavity 23 on boundary.
Pneumatic control circuit communicates with compressed gas source by cut-off type two-position three way magnetic valve 25, pneumatic bigeminy part 24 (reduction valve, filter) successively by driving cylinder 26 among Fig. 2, and the commutating frequency of solenoid valve 25 can be controlled by pulse signal generator.
Solenoid valve 25 is accepted pulse signal, and pressurized air enters and drives cylinder 26 right chambeies, and diaphragm 12 moves to left with piston 21, pressure in the hydraulic pressure cavity 22 raises, and barrier film 5 is out of shape left, and media cavity 23 pressure raise, liquid sucting valve 1 is closed, and liquid discharging valve 7 is opened, and the liquid material is transported to specified containers.Pulse signal ends, solenoid valve 25 commutations under Returnning spring 9 effects, drive cylinder 26 right chamber emptyings, diaphragm 12 moves to right with piston 21, and pressure reduces in the hydraulic pressure cavity 22, and barrier film 5 is out of shape to the right, and media cavity 23 pressure reduce, liquid discharging valve 7 is closed, and liquid sucting valve 1 is opened, and the liquid material is inhaled into media cavity 23.So repeatedly, reach the purpose of quantitative conveying liquid material.
Embodiment 2:
Drive cylinder among Fig. 3 and be made of cylinder body 10, piston 12, piston rod 20, end cap 14, diaphragm supporting disk 3 is fixing with diaphragm 21 with cylinder body 10, pump head drive (diaphragm 21) and piston rod 20 scyewed joint, and other structure is identical with embodiment 1.
Solenoid valve 25 in Fig. 4 pneumatic control circuit is the cut-off type two-position-five-way solenoid valve.
Solenoid valve 25 is accepted pulse signal, and pressurized air enters and drives cylinder 26 right chambeies, and piston 12 moves to left with diaphragm 21, and media cavity 23 pressure raise, and liquid sucting valve 1 is closed, and liquid discharging valve 7 is opened, and the liquid material is transported to specified containers.Pulse signal ends, solenoid valve 25 commutations, pressurized air enters and drives cylinder 26 left chambeies, and piston 12 moves to right with diaphragm 21, and media cavity 23 pressure reduce, and liquid discharging valve 7 is closed, and liquid sucting valve 1 is opened, and the liquid material is inhaled into media cavity 23.So repeatedly, reach the purpose of quantitative conveying liquid material.This embodiment is applicable to the occasion that delivery pressure is lower.
Change the commutating frequency of solenoid valve, can realize Flow-rate adjustment.Supporting with the electric remote transmitting flowmeter, can directly be connected with control system, realize the flow Automatic Control.If only by changing the commutating frequency of solenoid valve, poor continuity during small flow output.The utility model spy is provided with flow control device, by changing the stroke of pump head drive, realizes flow control, especially the control that small flow is exported.
The Flow-rate adjustment process is: turn adjusting knob 19, and adjusting screw rod 18 is moved axially along adjusting nut 15, the stroke that drives cylinder changes.In 0～100% running length scope, regulate the stroke that drives cylinder, thereby change the stroke of pump head drive (piston or diaphragm 21), reach the purpose of regulating flow.

Claims (4)

1, a kind of pneumatic diaphragm metering pump, comprise the pump head that has media cavity, liquid sucting valve, liquid discharging valve, communicate with compressed gas source by solenoid valve with the driving cylinder that pump head is fixedly connected, it is characterized in that described driving cylinder: the pump head drive that is provided with in piston rod and the cylinder body is fixedly connected, and end cap is provided with flow control device.
2, pneumatic diaphragm metering pump according to claim 1 is characterized in that described pump head drive is piston (or plunger).
3, pneumatic diaphragm metering pump according to claim 1 is characterized in that described pump head drive is a diaphragm.
4, pneumatic diaphragm metering pump according to claim 1, it is characterized in that the flow control device that is provided with on the described end cap is made of adjusting knob, adjusting screw rod, knob Cock screw, adjusting nut, dial, wherein adjusting knob and dial are made of one, to mark closely screw by knob fastening with adjusting screw rod, and be slidingly matched with adjusting nut, adjusting nut is threaded with adjusting screw rod.
CN 03201226 2003-01-16 2003-01-16 Pneumatic diaphram metering pump Expired - Fee Related CN2610115Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03201226 CN2610115Y (en) 2003-01-16 2003-01-16 Pneumatic diaphram metering pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03201226 CN2610115Y (en) 2003-01-16 2003-01-16 Pneumatic diaphram metering pump

Publications (1)

Publication Number Publication Date
CN2610115Y true CN2610115Y (en) 2004-04-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03201226 Expired - Fee Related CN2610115Y (en) 2003-01-16 2003-01-16 Pneumatic diaphram metering pump

Country Status (1)

Country Link
CN (1) CN2610115Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100360800C (en) * 2005-11-02 2008-01-09 杭州大潮泵业制造有限公司 Hydraulic diaphragm type metering pump with preposed diaphragm protection plate structure
CN101334129B (en) * 2008-07-16 2012-06-13 上海大学 Fixed flow quantity fluid delivery system
CN103161707A (en) * 2011-12-19 2013-06-19 袁平 Pneumatic plunger metering pump
CN103486010A (en) * 2013-09-06 2014-01-01 东莞市爱迪机电科技有限公司 Electromagnetic diaphragm metering pump
CN103511245A (en) * 2013-10-08 2014-01-15 杭州大潮石化设备有限公司 Check valve structure capable of being rapidly disassembled and assembled
CN106001285A (en) * 2016-07-13 2016-10-12 深圳长城开发苏州电子有限公司 Quantitative liquid jet feeder
CN106640607A (en) * 2017-03-02 2017-05-10 吴平 Impulse type pneumatic medicine adding system and medicine adding method
CN110548613A (en) * 2019-10-10 2019-12-10 河南捷威机器人科技有限公司 Feeding device and feeding method of rotary cup type electrostatic spraying system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100360800C (en) * 2005-11-02 2008-01-09 杭州大潮泵业制造有限公司 Hydraulic diaphragm type metering pump with preposed diaphragm protection plate structure
CN101334129B (en) * 2008-07-16 2012-06-13 上海大学 Fixed flow quantity fluid delivery system
CN103161707A (en) * 2011-12-19 2013-06-19 袁平 Pneumatic plunger metering pump
CN103486010A (en) * 2013-09-06 2014-01-01 东莞市爱迪机电科技有限公司 Electromagnetic diaphragm metering pump
CN103511245A (en) * 2013-10-08 2014-01-15 杭州大潮石化设备有限公司 Check valve structure capable of being rapidly disassembled and assembled
CN103511245B (en) * 2013-10-08 2016-04-06 杭州大潮石化设备有限公司 The one-way valve structures of fast demountable
CN106001285A (en) * 2016-07-13 2016-10-12 深圳长城开发苏州电子有限公司 Quantitative liquid jet feeder
CN106640607A (en) * 2017-03-02 2017-05-10 吴平 Impulse type pneumatic medicine adding system and medicine adding method
CN110548613A (en) * 2019-10-10 2019-12-10 河南捷威机器人科技有限公司 Feeding device and feeding method of rotary cup type electrostatic spraying system

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee