CN201326534Y

CN201326534Y - Multi-stage diaphragm pump

Info

Publication number: CN201326534Y
Application number: CNU2008202160537U
Authority: CN
Inventors: 陆新
Original assignee: CHANGZHOU FULLING PRODUCTS Co Ltd
Current assignee: CHANGZHOU FULLING PRODUCTS Co Ltd
Priority date: 2008-11-24
Filing date: 2008-11-24
Publication date: 2009-10-14
Anticipated expiration: 2018-11-24

Abstract

The utility model relates to a multi-stage diaphragm pump, belonging to a liquid transfer pump with the volume changeable through gas. A plurality of gas rooms are arranged in a crust of the multi-stage diaphragm pump; each gas room is provided with an air inlet valve, an air outlet valve and an elastic diaphragm; the elastic diaphragms of all the gas rooms are respectively connected with a transmission component; all the transmission components are connected with a rotating shaft driven by a motor. The multi-stage diaphragm pump is characterized in that the multi-stage diaphragm pump is provided with an upper stage of gas rooms and a lower stage of gas rooms; each stage comprises four gas rooms which are arranged at equal intervals on the circumference; corresponding, the rotating shaft is provided with an upper stage of biased projections and a lower stage of biased projections; each stage of biased projections includes an upper biased projection and an opposite lower biased projection; and two adjacent transmission components of each stage are sleeved with the corresponding biased projection. The multi-stage diaphragm pump is high in work efficiency. During high speed rotation of the rotating shaft, two contrapuntal gas rooms among the four gas rooms in each stage have the same change status so that the diaphragm pump remains balanced, thus fundamentally reducing the vibration and noise of the diaphragm pump.

Description

Multi-stage diaphragm pump

Technical field

The utility model relates to a kind of multi-stage diaphragm pump, belongs to gas positive-displacement fluid transfer pump.

Background technique

Diaphragm pump is a kind of gas positive-displacement fluid transfer pump, by the rotation of driven by motor eccentric shaft, it is reciprocating to drive driving element by eccentric shaft, and the barrier film that links to each other with driving element shrinks air chamber periodically or expands, cause air valve to open and close, realize conveying medium.The diaphragm pump of existing a kind of four air chambers, eccentric shaft have only one protruding partially, the driving element of four interval 90 degree is installed on eccentric shaft protruding partially, along with the fast rotational of axle, four driving elements are done stretching in various degree successively.But this driving structure will certainly cause the imbalance of element in the diaphragm pump, thereby cause bigger vibration, when motor runs on a high rotational speed, this vibration is especially obvious, and be accompanied by vibration and produce very big noise, also can reduce the working life of diaphragm pump, and working efficiency is lower.

Summary of the invention

In order to overcome the above-mentioned deficiency of existing diaphragm pump, the utility model provides that a kind of operational vibration is low, noise is little, double-deck many air chambers diaphragm pump of the high working efficiency of long service life.

The utility model multi-stage diaphragm pump, casing contains a plurality of air chambers, each air chamber is provided with suction valve, gas outlet valve and elastic diaphragm, the elastic diaphragm of each air chamber is connected with a transmitting assemblies respectively, each transmitting assemblies is with linking to each other with a motor-driven rotating shaft, at least be provided with upper and lower two-stage air chamber, every grade of four air chambers that comprise the circumference spaced set, it is protruding partially that the rotating shaft correspondence is provided with upper and lower two-stage, every grade protruding partially contain upper and lower two oppositely protruding partially, with on two ortho position transmitting assemblies socket correspondences of one-level same protruding partially.

This diaphragm pump is under motor driving, during the rotating shaft fast rotational, four air chambers exhaust again and again, air-breathing respectively in each group, but the state of changing of two air chambers of contraposition each other is identical all the time in four air chambers, thereby makes diaphragm pump keep balance, fundamentally reduces the vibration and the noise of diaphragm pump, remain on work under the quiet environment, diaphragm pump working life is prolonged, and this pump contains multistage air chamber, working efficiency further improves.

Description of drawings

Fig. 1 is the cross-sectional view of the utility model diaphragm pump.

Fig. 2 represents turning shaft structure.

Fig. 3-Fig. 6 represents the cycle state of changing of four air chambers of this diaphragm pump respectively.

Among the figure: 1 is motor, and 2 are rotating shaft, and 2-1,2-2 are that one-level is protruding partially, 2-1 ', 2-2 ' are protruding partially for secondary, and 3 is casing, 4 is shaft bearing, and 5 is top cover, and 6 is barrier film, and 7 is limiting board, 8 is the one-level transmitting assemblies, and 8 ' is the secondary transmitting assemblies, and 9 is the upper level air chamber, and 9 ' is the secondary air chamber.

Embodiment

Further specify the example structure of the utility model two-stage diaphragm pump below in conjunction with accompanying drawing.

As Fig. 1, this diaphragm pump contains the rotating shaft 2 that links to each other with motor 1, the one-level air chamber 9 on bearing 4, upper strata, the secondary air chamber 9 ' of lower floor are equipped with in rotating shaft 2, every grade of air chamber contains equally spaced four air chambers of circumference (referring to Fig. 3), and rotating shaft 2 is provided with reverse successively four protruding partially 2-2,2-1,2-2 ', 2-1 ' (as Fig. 2) from top to bottom.Fig. 3-Fig. 6 represents that the one-level air chamber 9 on upper strata comprises four air chamber 9-1,9-2,9-3 and 9-4, and distributes alternately with circumference 90 degree, and each air chamber is respectively equipped with elastic diaphragm 6, and each barrier film 6 links to each other with a transmitting assemblies 8 respectively; Transmitting assemblies 8 with two ortho positions is a pair of, is socketed in respectively on protruding partially 2-1, the 2-2.The secondary air chamber 9 ' of lower floor comprises four air chambers of circumference 90 degree equally, its layout and four one-level air chamber 9-1,9-2,9-3,9-4 are corresponding one by one, also corresponding identical with the Placement of protruding partially 2-1 ', 2-2 ' with superstructure, this omit the secondary air chamber the pass diagrammatic sketch.

When rotating shaft 2 high speed rotating, four air chambers of secondary ground synchronizing cycle of four air chambers of the one-level on this diaphragm pump upper strata and lower floor changes, air-breathing, the exhaust process of going round and beginning again.Fig. 3～Fig. 6 represents that it is in the one-period that three-sixth turn is revolved in rotating shaft 2, the change procedure of upper strata each air chamber of one-level.

As Fig. 3 state representation, protruding partially 2-1 and 2-2 are in the left and right position of rotating shaft 2, and the barrier film of air chamber 9-1 and 9-3 all is pushed into limit position by transmitting assemblies, and air chamber 9-1 and 9-3 are in minimum volume, and indoor gas is discharged; The position and another barrier film to air chamber 9-2 and 9-4 mediates, air chamber 9-2 and the 9-4 position that mediates, volume dwindles in the process.

Fig. 4 represent rotating shaft 2 on the basis of Fig. 3 state, changeed clockwise 90 the degree, this moment, protruding partially 2-1 and 2-2 were in the forward and backward position of rotating shaft 2, the barrier film of air chamber 9-2 and 9-4 all is pushed into limit position by transmitting assemblies, be in minimum volume, gas is discharged, and the barrier film of air chamber 9-1 and 9-3 is in the process of being pulled out by transmitting assemblies, the volume of air chamber 9-1 and the 9-3 state that mediates.

Fig. 5 represents that rotating shaft 2 changeed 90 degree again clockwise on Fig. 4 state basis, and this moment, protruding partially 2-1 and 2-2 were in the right side, the position, a left side of rotating shaft 2, and the barrier film of air chamber 9-1 and 9-3 all is stretched to limit position by transmitting assemblies, and 2 air chambers is in the suction condition of maximum volume; The position and the barrier film of air chamber 9-2 and 9-4 mediates.

Fig. 6 represents that rotating shaft 2 changeed 90 degree again clockwise on Fig. 5 state basis, and this moment, protruding partially 2-1 and 2-2 were in back, the anteposition of rotating shaft 2, and the barrier film of air chamber 9-1 and 9-3 all is pushed into interposition by transmitting assemblies; And the barrier film of air chamber 9-2 and 9-4 all is stretched to limit position by transmitting assemblies, and 2 air chambers is in maximum volume, sucks gas.

So far, diaphragm pump is finished suction, the exhaust process of one-period, repeats above periodic process with then keeping.In like manner, the change procedure of each air chamber of secondary of lower floor and upper strata is corresponding one by one identical.

From the change procedure of Fig. 3-Fig. 6 as seen, in four air chambers, the state of changing of two air chambers of contraposition each other is identical all the time, thereby makes diaphragm pump keep balance, fundamentally reduce the vibration and the noise of diaphragm pump, and multistage air chamber further improves working efficiency.

Claims

1. multi-stage diaphragm pump, casing contains a plurality of air chambers, each air chamber is provided with suction valve, gas outlet valve and elastic diaphragm, the elastic diaphragm of each air chamber is connected with a transmitting assemblies respectively, each transmitting assemblies is with linking to each other with a motor-driven rotating shaft, it is characterized in that being provided with at least upper and lower two-stage air chamber, every grade of four air chambers that comprise the circumference spaced set, it is protruding partially that the rotating shaft correspondence is provided with upper and lower two-stage, every grade protruding partially contain upper and lower two oppositely protruding partially, with on two ortho position transmitting assemblies socket correspondences of one-level same protruding partially.