CN2216158Y - Multipurpose pneumatic double diaphragm pump - Google Patents

Abstract

The utility model relates to a multipurpose pneumatic double diaphragms pump, which is composed of a pump body, double diaphragms, a command valve, a distributing valve, an ingress egress material pipe, an ingress egress air pipeline, etc., wherein, the double diaphragms cause an air chamber and a material liquid working chamber to be isolated to form into symmetrical left and right working chambers, and the direction change that the air is entered the left and the right working chambers is finished by the distributing valve and the command valve; the sealing of an ingress egress material port adopts the structure that a hang type valve plate and a steel sheet are intimately contacted with each other. The utility model has the advantages of reasonable design, reliable sealing, long service life, no noise, convenient use, simple structure and few wearing part, the utility model can transport various corrosive liquids, liquids with granule and inflammable liquids with high viscosity and rank poison, particularly mediums which can not easy to pump by the common pump, and the utility model can be widely used in industries such as petroleum, chemical industry, electron, ceramics, textile, etc.

Description

Multipurpose pneumatic double diaphragm pump

A kind of novel pneumatic diaphragm pump belongs to and transports machinery.Can transport various corrosive liquids, liquid, high viscosity, volatile, inflammable, the hypertoxic liquid of band particle particularly are applicable to the medium that various conventional pumps can not be aspirated, and can be extensive use of in industries such as oil, chemical industry, electronics, pottery, weaving.

At present, domestic existing ball sealing formula diaphragm pump causes seal failure because the ball sealing place very easily damages, and causes the complete machine ability of losing the job.External pneumatic diaphragm pump performance is good, but it is expensive to purchase high price.

The utility model purpose is promptly at above-mentioned worn-out end, the new types of diaphragm pump that provides, and reasonable in design, sealing is reliable, and the life-span is long, and with low cost.

This novel pneumatic diaphragm pump has the two barrier films of the pump housing (containing valve body, inner end cap, outer end cap, charging threeway, charging bend pipe, discharging threeway, discharging bend pipe), central shaft, command valve, distributing valve, suction port, take the gas port silencing apparatus out of, it is characterized in that (1) central shaft two ends connect two barrier films, air chamber and feed liquid active chamber are isolated every film; (2) the airtight employing feeding and discharging valve block of feed inlet and outlet and the close contact structures of feeding and discharging metal mat; (3) finish two air cavity gas commutations by the command valve and the distributing valve that are connected on the valve body.(4) distributing valve spool one end is equipped with spring.(5) silencing apparatus being set on the wall of valve body communicates with atmosphere.(6) pump housing base plate is divided into rubber pad and directly is held on the ground.

Embodiment's accompanying drawing

How Fig. 1 always schemes with the Pneumatic double diaphragm pump structure

Fig. 2 command valve is with the distributing valve structure and be connected view

Fig. 3 Fig. 2 A-A sectional view

Fig. 4 Fig. 2 B-B sectional view

See Fig. 1, central shaft 1 two ends of passing valve body 2 connect left and right sides barrier film 9, and and inner end cap 4 between form about two work air cavity A1, A2, two feed liquid active chamber B1 about the barrier film outside and 11 formation of outer end cap, B2, two the charging bend pipes 15 in its top and charging threeway 16 inspiration feed liquids, its bottom two discharging bend pipes 13 and discharging threeway 3 dischargings.Between feed liquid active chamber B1, B2 and bend pipe 13.15, establish feeding and discharging valve block 14(one-way valve) sealing of this place adopts the valve block 14 and metal mat 12 close contact structures of suspension type.Pump housing base plate connects rubber pad 86 times, directly is held on the ground.Item 7 is a leg.Establishing silencing apparatus 20 on the cavity wall of valve body 2 enters waste gas in the atmosphere.Item 10 is an outer plate, and item 17 is a command valve, and item 18 is a distributing valve, 21 air outlet, 22 suction port.

See Fig. 3, Fig. 4, barrier film 9 moves with control distributing valve spool 18.4 by the command valve push rod 17.1 and the command valve spool 17.4 of inner clip plate 5 promotion vertical projection directions, sees Fig. 3, and distribution spool 18.4 one ends are equipped with spring 19.

Working procedure: pump with pressurized air as power.When pressurized air enters distributing valve 18, distribute by it, part gas (is seen Fig. 3 along the M direction, it is the hole on valve body 18.2 tops, through the annular groove and the hole of valve pocket 18.3, enter the hole of valve body 18.2 bottoms again through the annular groove of spool 18.4 again, and valve body 2 etc.) enter left air chamber A1(and see Fig. 1), releasing left chamber feed liquid when promoting the outside end cap 11 directions motion of left barrier film 5 enters a left side (descending) discharging bend pipe 13 through left discharging valve block 14 and enters external pipe to discharging threeway 3.Meanwhile suck feed liquid through right charging bend pipe 15 and valve block 14, arrive right feed liquid active chamber B2 by charging threeway 16.When left barrier film 5 oppositely when the valve body direction is moved, then suck and discharge oppositely.Finish the conveying of pump thus.Another part gas enters command valve 17 along the N direction and sees that Fig. 2, Fig. 4 (through the distribution of command valve 17, promote distributing valve spool 18.4 and move.Promptly when barrier film 5 moves near valve body 2, inner clip plate 5 promotes command valve push rod 17.1 and promotes to command spool 17.4 to do axial motion again, thereby change and enter distributing valve valve pocket 18.3 gas N flow directions by command valve, move axially (see figure 3) to promote distributing valve spool 18.4, reach the flow direction change that air-flow M enters working room, the left and right sides, the promotion barrier film is reciprocating, carries the purpose of feed liquid to realize suction.Item 17.2 is the command valve valve body, and item 17.3 is the command valve valve pocket, and item 18.1 is the distributing valve end cap.

The utility model advantage is as follows: (1) pump without spin parts, barrier film with moving component with pump medium and separate fully, when making pumped (conveying) medium, can be to external leakage, pumping poisonously, easily wave or can not cause environmental pollution and personal injury during Korrosionsmedium. (2) input and output material valve block and input and output material metal mat at right angle setting, working condition is reasonable, and sealing is reliable, and the life-span is long. (3) easy to use, reliable operation. The start-stop pump only need open or close the valve of giving vent to anger simply. Because fortuitous event causes long-time no medium operation or shuts down suddenly, can not damage pump. When playing load, pump meeting autostop after recovering normally, can start again automatically. (4) do not need special-purpose basis, be placed on the flat ground and get final product work. (5) noiseless that fixes a silencer. (6) the contact medium wearing and tearing are not little for moving component, keep stable work in work. (7) simple in structure, few easy workout part, installation and maintenance are convenient. (8) do not need water, pumps water is inhaled 7 meters of Cheng Gaoda, and lift reaches more than 50 meters. (9) runner is wide, and particle diameter reaches 10 millimeters. (10) the adjusting air valve opening degree can be realized step-less adjustment. (11) not electricity consumption is used safe and reliable in inflammable and explosive occasion.

Claims (4)

1, a kind of Pneumatic double diaphragm pump of using more, have the pump housing, command valve (17), distributing valve (18), its middle pump body is by valve body (2) and the inner end cap (4) that connects in turn at the valve body two ends, outer end cap (11), top charging bend pipe (15) and charging threeway (16), bottom discharging bend pipe (13) and discharging threeway (3) constitute; Establish central shaft (1), valve body (2) in the pump housing and upward laterally install command valve (17) and distributing valve (18), barrier film (9) is set between inside and outside end cap, and through inner clip plate (5) promotion command valve push rod (17.1) and command valve spool (17.4), distributing valve (8.4) one end device springs (19), suction port (22) is set on the distributing valve (18), set out gas port (21) on the valve body (2), it is characterized in that (a) central shaft (1) passes valve body (2), two barrier films (9) about two ends connect, barrier film is isolated air chamber A and feed liquid chamber B; (b) feed inlet and outlet adopts the close contact structures of feeding and discharging valve block (14) and metal mat (12).

2, use Pneumatic double diaphragm pump by claim 1 is described more, it is characterized in that silencing apparatus (20) is set on the cavity wall of valve body (2), communicate with atmosphere.

3, use Pneumatic double diaphragm pump by claim 1 is described more, it is characterized in that pump housing base plate is provided with rubber pad (8) for 6 times, directly is held on the ground.

4,, it is characterized in that the close contact structures of the suspension type of material feeding mouth sealing employing valve block (14) and metal mat (12) by the described Pneumatic double diaphragm pump of claim 1.

Images