CN1191935A - Gas pump - Google Patents

Abstract

The gas pump consists of electric motor, air pump and other parts, and it features the air filtering cylinder, which is in the intake, has silencing filtering layer at its bottom and filtered air directly feed into air chamber; and the sealing muff, which is placed on the piston and piston bush and has inverse motion direction. The sealing muff makes almost zero working pressure of gas pump and this results in very low noise and power consumption. One non-return valve is connected to the output of the said pump to avoid return of gas or liquid.

Description

Air feed pump

The present invention relates to a kind of air feed pump.

Existing air pump generally all is to work under the constant air amount change pressure state, and noise is bigger, and power consumption is also big.

It is little to the objective of the invention is to design a kind of noise, and power consumption is little, easy to operate, can be widely used in the minitype air-supply pump of each peasant household and family.

Structural feature of the present invention has reached above-mentioned purpose: it comprises direct current generator, circuit for controlling motor and air pump, it is characterized in that air pump suction chamber ingress is provided with air filtration cartridge,, there is the noise reduction filter layer at the tube end, the hole that one fixing seal sheet is respectively arranged on piston nose and the piston sleeve, drive fit has diaphragm seal in the hole, is distributed with air inlet or air outlet hole around the hole in the topped scope of diaphragm seal.

Above-mentioned structural feature, can make air directly enter air pump after filtering, when piston moves ahead, diaphragm seal sealing on it, and the diaphragm seal on the piston sleeve is opened, piston extrudes the gas in the cylinder, when piston retreats, diaphragm seal sealing on the piston sleeve, and the diaphragm seal on the piston is opened, can guarantee that thus the air pressure of this air feed pump when work is near barometric pressure, be air pressure in the air chamber does not contain pressure, thereby changed air pump, again because air directly enters air chamber after through the filter cartridge noise reduction usually in the working state of constant air amount change pressure, greatly reduce air pump fricative noise of air when work, also greatly reduce the power consumption of air pump simultaneously.

In order to prevent that gas from pouring in down a chimney into the pump housing, this air feed pump output terminal is connected to an one way stop peturn valve, with guarantee the gas folk prescription to defeated by.

On the said structure basis, this air feed pump is provided with a miniature bearing again between eccentric shaft and connecting rod, make link motion lighter and handier.

The present invention also can be used as solution feed pump, as long as air filtration cartridge is changed the liquid joint.

Because the present invention structurally, can be operated under the normal pressure it, and have that noise is little, advantage that low, the gas of power consumption or liquid do not reflux.

Describe the present invention in detail below in conjunction with accompanying drawing:

Fig. 1 plan view

Fig. 2 plan view

This air feed pump is made of control circuit, motor and the air pump housing, motor is fixed on the pump housing base plate, the pump housing is made of air chamber 1, eccentric wheel 2, connecting rod 3, miniature bearing 4, piston 5, piston sleeve 6, output gas connection 7, air chamber cover 8, one-way valve 9,10 and the air filtration cartridge 11 that is fixed on the air chamber wall, motor 12 is fixed on the base plate 17 of gas pump, motor shaft 13 is connected with eccentric wheel wheel 2, eccentric shaft and connecting rod 3 are connected, in order to reduce friction and increase rotating speed, the connecting rod afterbody has a miniature bearing 14.Connecting rod one end links to each other with eccentric wheel, and the other end and piston 5 are connected.Piston 5 slides with piston sleeve 6 drive fits, and piston sleeve 6 is threaded with air chamber cover 7, and piston and piston sleeve central authorities all are attached with diaphragm seal 15,16.Air pump output terminal 7 one ends are fixed on the vent plug lid 8, and the other end closely is connected with conduit 14.The other end of conduit links to each other with the interior one-way valve 9 that connects, and this one-way valve is connected with external one-way valve 10 again.

On suction chamber 1 wall, a hole is arranged, its internal fixation has air filtration cartridge 11.Single face copper mesh filter screen is arranged at its bottom, and foam is housed in the net, is used for filtered air and abates the noise.

This air feed pump can be used for family and breeds fish to the fish jar oxygen supply and be used for peasant household spray wine liquid pesticidal.

Claims (3)

1, a kind of air feed pump, comprise direct current generator, circuit for controlling motor and air pump, motor is fixed on the air pump base plate, the ingress that it is characterized in that the air pump suction chamber is provided with air filtration cartridge,, there is the noise reduction filter layer at the tube end, in the topped scope of diaphragm seal, be distributed with air inlet or air outlet hole around the hole that the fixing seal sheet is arranged on piston nose and the piston sleeve, hole.

2, air feed pump as claimed in claim 1 is characterized in that the out splice going splice of air pump links to each other with one-way valve.

3, air feed pump as claimed in claim 1 or 2 is characterized in that being connected with on the motor shaft eccentric wheel, and this off-centre commentaries on classics links to each other with a piston rod, and pitman shaft is equipped with miniature bearing.

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