CN103161707A

CN103161707A - Pneumatic plunger metering pump

Info

Publication number: CN103161707A
Application number: CN201110424813XA
Authority: CN
Inventors: 袁平
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-19
Filing date: 2011-12-19
Publication date: 2013-06-19

Abstract

The invention discloses a pneumatic plunger metering pump using high-pressure air as motive power. According to the pneumatic plunger metering pump, an air cylinder assembly and a support seat are fixed on a mounting seat, a piston is connected to an air cylinder connecting rod, a pump head is mounted on the support seat, the piston in the pump head is sealed through a sealing ring, and a liquid inlet single-way valve set and a liquid outlet single-way valve set are mounted on the pump head. The pneumatic plunger metering pump uses the high-pressure air as the motive power, the high-pressure air passes through an electromagnetic valve, a throttling valve and an air pipe through the throttling valve to enter an air cylinder of the air cylinder assembly, the air cylinder connecting rod moves left to right under the action of the high-pressure air to push the piston to move left to right, and a suction function of liquid medium is achieved. The power-on and power-off delayed time of a time relay is set, liquid sucking efficiency of the metering pump is controlled, needed flow is obtained, through adjustment of the throttling valve, moving speed and moving frequency of the piston are controlled to be basically matched, and running of a system is enabled to be more smooth.

Description

The pneumatic plunger metering pump

Technical field

The present invention relates to a kind of metering pump system that extracts the conveying liquid body medium.

Background information

At present, much all add medicament and extract corrosivity and flammable and combustible liquids with metering pump in fields at building, medical treatment, oil, chemical industry etc.Import qigong pump is expensive, and domestic pneumatic pump is still the motor driving reducing gear, non-pure pneumatic structure, and price is also far above mechanical pump.Use compressed-air actuated industry at main frames such as concrete sprayings; the metering pump of the chemical agents such as interpolation accelerator also adopts mechanical plunger metering pump or mechanically actuated diaphragm metering pump usually; a kind of pressurized gas that uses, the metering pump that expense is lower, these industries are better selected beyond doubt.

Summary of the invention

The present invention has designed a kind of plunger metering pump that is used as power with high-pressure air.

The scheme that the present invention solves its technical problem is: configure air compressor or draw a branch from the working voltage air of main frame, being used as power with high-pressure air, forming systems control division and divide with the time relay, auxiliary reclay, solenoid valve, throttle valve; The work do-part that forms system with cylinder assembly, piston, pump head, feed liquor one-way valve group, fluid one-way valve group etc.; Under high-pressure air effect in cylinder assembly, reciprocating motion of the pistons, the system that realizes sucks and gets rid of the function of liquid medium; By the on off delay interval of set time relay, change the working piston reciprocating frequence, realize the Flow-rate adjustment of pump, by throttle valve, the regulating piston motion speed.The present invention has following useful effect:

1, simple in structure, low cost of manufacture;

When 2, the output liquid medium pipeline stopped up or closes, working piston automatically slowed down or stops, and has protective function;

3, be particularly suitable for main frame and use compressed-air actuated place, can join air compressor and be widely used in every field;

4, working portion is pneumatic structure, does not produce electrical spark, has explosion prevention function;

5, control system is separated with work system, realizes that conveniently the remote adjustment of flow is controlled;

6, this system can lengthen pump head, simplifies bearing;

7, this system can change piston into barrier film, and bearing and pump head are made the structure that adapts with barrier film, makes Pneumatic diaphram metering pump;

8, this system can respectively connect at driving cylinder two ends a cover pump head, makes the double pump header structure;

9, this system can change hydraulic jack into driving cylinder assembly, makes the high-pressure and hydraulic metering pump;

Description of drawings

Fig. 1 is pneumatic plunger metering pump overall schematic

1-cylinder assembly, 2-fitting seat, 3-air cylinder connecting rod, 4-locking nut, 5-feed liquor one-way valve group, 6-pump head, 7-fluid one-way valve group, 8-seal ring, 9-piston, 10-bearing, (11,12)-tracheae pipe joint, (13,14,17)-throttle valve, 15-solenoid valve, (16,18)-baffler, 19-auxiliary reclay, the 20-time relay, 21-power switch.

Fig. 2 be fluid one-way valve group 7 structures and with the annexation figure of pump head 6

23-ball valve seat, 24-valve ball, 25-support, 26-pipe joint, (27,28)-seal ring.

Fig. 3 be feed liquor one-way valve group 5 structures and with the annexation figure of pump head 6

Embodiment

The present invention adopts pump head 6, feed liquor one-way valve group 5, fluid one-way valve group 7, the piston 9 and cylinder assembly 1 combination of plunger metering pump.Design fitting seat 2 and be used for fixedly cylinder assembly 1 and bearing 10, and the external installation of system; Designed bearing 10 and be used for pump head 6 is installed, on bearing 10, pore has been arranged, in order to keep its internal pressure stabilises.With the reciprocating frequence of time relay 20, auxiliary reclay 19, solenoid valve 15 and power switch 21 and pipe joint (11,12), cable, tracheae control piston 9, obtain the flow that needs; By throttle valve (13,14,17), the motion speed of control piston makes the reciprocating frequence of itself and piston basically identical, and system's operation is more steady.

Claims

1. pneumatic plunger metering pump, this pump is by cylinder assembly 1, fitting seat 2, air cylinder connecting rod 3, locking nut 4, feed liquor one-way valve group 5, pump head 6, fluid one-way valve group 7, seal ring 8, piston 9, bearing 10, gas-tpe fitting 11,12, solenoid valve 15, throttle valve 13,14,17, auxiliary reclay 19, the time relay 20 and power switch 21, baffler 16,18 connect to form by bolt, tracheae, cable.

2. cylinder assembly 1 according to claim 1, is characterized in that, indoor design damping device, can effectively reduce cylinder piston shock to cylinder body when the stroke end, reduce vibrations and the noise of system.

3. fitting seat 2 according to claim 1, be characterised in that and processed corresponding hole on it, externally installs so that cylinder assembly 1 and bearing 10 and whole pump to be installed fixedly, and its structure can be the shape of L-type, the suitable installation needs such as T-shaped or dull and stereotyped.

4. feed liquor one-way valve group 5 according to claim 1, is characterized in that it is comprised of ball valve seat 23, valve ball 24, support 25, seal ring 28,27 pipe joints 26, is arranged on pump head 6 belows.

5. fluid one-way valve group 7 according to claim 1, is characterized in that it is comprised of ball valve seat 23, valve ball 24, support 25, seal ring 28,27 pipe joints 26, is arranged on pump head 6 tops.

6. bearing 10 according to claim 1, be characterised in that it is columnar structured, and both ends of the surface have screw, and being used for fixedly, pump head 6 also is connected with cylinder assembly 1 by fitting seat 2; Cylinder has a pore.

7. throttle valve 13 according to claim 1,14,17 is characterized in that it can regulate the tolerance that the unit time enters cylinder, and the motion speed of control cylinder piston makes system's operation more steadily reliable.

8. the control system time relay 20 according to claim 1, be characterised in that it has the dual-delay function, and the time-delay make-and-break time can be set as required.