CN2128977Y - Air-tube type bellows pump - Google Patents

Abstract

The utility model relates to a novel diaphragm pump, in particular to a diaphragm pump with diaphragms in pneumatic-tube shapes. The novel diaphragm pump adopts a plurality of tubular diaphragms which are arranged in the radial direction and are lined in the axial direction to form working chambers with metal outer sleeve tubes, a dedicated air distributing mechanism is used to distribute the air for each working chamber to push against the tubular diaphragms in the radial direction to make the diaphragms be deformed inwards to form a volume change for delivery of various liquids. Compared with an existing diaphragm pump, the utility model has the advantages of compact and reasonable structure; not only are the stability and the reliability of the work improved, but the flow quantity and the pressure parameter are also obviously increased. Besides, the utility model is a completely novel high performance diaphragm pump capable of growing to be an independently series.

Description

Air-tube type bellows pump

The utility model relates to positive displacement pump, particularly diaphragm pump.

Existing diaphragm pump all is an employing garden disc-shaped diaphragm, the two diaphragm pump of two opposed layouts of barrier film active chamber, barrier film shift reciprocately and speed be restricted (＜200rpm).The active chamber that the garden disc-shaped diaphragm constitutes is the incompatibility high-pressure work also.Therefore, two diaphragm pump not only working pressure low (＜8MPa), flow is little, and tangible flow and pressure pulsation are arranged; Many barrier films multi-cavity structure is then very heavy, has limited the raising and the application area of diaphragm pump performance.

Pneumatic tubular diaphragm pump of the present utility model adopts tubular barrier film, borrows air pressure radially to push tubular barrier film, makes barrier film produce radially to realize not having to enterolithic volume-variation and carries liquid with leaking.Tubular barrier film inner chamber is provided with supporting frame, with the variant of qualification barrier film, and can improve its distortion recovery rate.Tubular barrier film allows the high-frequency high-speed leading thread to to-and-fro motion (reaching as high as the 1500rpm/ branch).Tubular barrier film is the pressure-bearing balance radially, and overcoat can bear elevated pressures with metal sleeve.The pump housing is taked multitube (ten pipe) radial arrangement, axially-aligned, has utilized the spatial volume of the pump housing fully, and is not only simple and compact for structure, and output flow and pressure more become steady.The purpose of this utility model is that to develop a kind of specific power big, and can safety and steady ground, do not have and leak the complete novel membrane pump with pneumatic drive that various special fluids (as inflammable and explosive, corrosive, that pollute, full-bodied liquid) is carried on ground.

According to the pneumatic tubular diaphragm pump that the utility model is made, above-mentioned purpose can reach.

Structure of the present utility model is (Fig. 1): each tubular barrier film (1) is contained in respectively in the big slightly metal sleeve of internal diameter (3).Tubular barrier film two ends rely on the taper lock dog at supporting frame (2) two ends to realize being tightly connected to metal sleeve; Suction valve (4) is established in the lower end of each sleeve pipe, and expulsion valve (6) is established in the upper end, and is communicated with the public suction endless tube (7) and the discharge endless tube (8) of upper and lower end respectively.So the liquid that sucks endless tube can be transported to the discharge endless tube through suction valve, by tubular barrier film inner chamber and expulsion valve.Therefore, the annular volume between the outer surface of tubular barrier film and the metal sleeve internal surface constitutes the pneumatic drive chamber of barrier film, the inner transfusing chamber that forms of tubular barrier film.When pressurized air feeds actuator chamber, radially push tubular barrier film to internal strain, liquid in pipe opens suction valve closure, expulsion valve by pressure and pressure rises, and liquid in pipe is discharged into the discharge endless tube.When actuator chamber pressurized air is discharged (release), fluid pressure is closed expulsion valve in the discharge endless tube, it is tubular that barrier film recovers gradually, the pipe internal volume increases, form parital vacuum, liquid is pushed suction valve open in the suction endless tube under the atmospheric pressure effect, the interior transfusing chamber of barrier film is topping up again, realizes inhaling, presses to carry liquid.Ten metal sleeves are radially evenly layout, axially-aligned, rely on pump case (5) and distributing valve (9) location.Blowing mouth is established at the middle part of each metal sleeve, is communicated with the distributing valve gas port.Distributing valve can take turns air feed and exhaust for ten pipe pneumatic drive chambeies of radial arrangement, makes each chamber when air inlet, the transfusing chamber output liquid; When outside exhaust, then suck liquid, relying on the air inlet feedback mechanism simultaneously is that radial plunger type gas motor driven distribution spool rotates synchronously.Its distribution working principle as shown in Figure 2.When the active chamber (actuator chamber and transfusing chamber) and the distribution spool of each tubular barrier film is positioned at shown position, the midfeather of spool gas booking groove (K) is positioned at horizontal position, and the blowing mouth of a, f pipe is in by advancing of closing of partition wall, return-air interrupt status.If the following logical air inlet of partition wall, then at this moment pressurized air import the pneumatic drive chamber of b, c, d, e pipe, and the tubular barrier film of radial compression inwardly moves, at this moment its suction valve closure, liquid in pipe pressure increases, and pushes expulsion valve open, and endless tube is discharged in the liquid input in the tubular barrier film; Meanwhile, c, e pipe air inlet feedback drives gas motor c ', e ' cylinder, so its piston rod produces torque by eccentric garden to the crankshaft rotating center, bent axle is counterclockwise rotated; The partition wall top leads to return-air, and the pressurized air that g, h, i, j manage actuator chamber enters atmosphere, so expulsion valve closes valve, the pipe internal volume increases, and forms parital vacuum, and liquid is pushed suction valve open and charged in the pipe, tubular recovery under the atmospheric pressure effect in the suction endless tube.Along with driving the distributing valve spool, counterclockwise rotates by bent axle, because each manages the gas distribution channel of corresponding barrier film actuator chamber and the phase place of distributing valve spool cooperatively interacts, in to each pipe gas transmission,, the distributing valve spool is rotated synchronously in the same way again by feedback control strategies.Therefore, no matter the distributing valve spool forwards any position to, under continuous air feed condition, four or five are always arranged in the actuator chamber of ten tubular barrier films under compressed-air actuated effect, make its transfusing chamber output liquid, the logical return-air of actuator chamber of five or four pipes is in addition always arranged again, its corresponding transfusing chamber volume is increased, suck liquid.Feeding back the gas motor simultaneously and drive distributing valve rotation in the same way synchronously, is ten pipe distributions in turn, to realize continuous operation.The transfusing chamber of ten pipes each inhale, press liquid once, the distributing valve spool also circles synchronously in the same way, be ten each distribution of pipe once.If before distributing valve, establish Flow valve, can regulate displacement by throttling and realize the flow step-less adjustment.

With reference to accompanying drawing, pneumatic tubular diaphragm pump of the present utility model generally includes: tubular barrier film (1), pipe inner support frame (2), metal sleeve (3), suction valve (4), pump case (5), expulsion valve (6) sucks endless tube (7), discharges endless tube (8), distributing valve (9), feedback gas motor (10) and pump seat (11).

Main feature of the present utility model is: adopt the metal sleeve of tubular barrier film and its overcoat concentric fits to form pneumatic drive chamber and transfusing chamber, rely on tubular barrier film to change the transfusing chamber volume to internal strain, carry to realize liquid.Therefore, the utility model has kept the traditional, pneumatic diaphragm pump fully and has had good self-priming performance, can safe and reliable nothing leak the advantage that various special liquids are carried on ground.The pump housing is taked radial arrangement, the axially-aligned of multitube (ten pipes) simultaneously, utilized pump housing space more effective and reasonablely, compact structure is reasonable, and output is steadily reliable, can form different pressure, flow series by changing pipe number, caliber or supply gas pressure mode.The outstanding advantage that adopts tubular barrier film is that it allows at a high speed, high-frequency inside to-and-fro motion, the stressed improvement of tubular barrier film simultaneously, and metal sleeve can bear high pressure.Therefore, can realize high pressure, carry various liquid to flow, nothing leakage greatly, compare with existing diaphragm pump, with the new types of diaphragm pump of volume under the identical situation of movement rate, its flow can increase and is twice, if speed is improved, then output flow improves many times.Increase distribution pressure, can make its working pressure and lift obtain corresponding raising.Therefore, pneumatic tubular diaphragm pump of the present utility model all has great breakthrough than existing diaphragm pump in structure, performance and application.

Claims (3)

1, a kind of pneumatic tubular diaphragm pump is made up of tubular barrier film (1), inner support frame (2), metal sleeve (3), suction valve (4), pump case (5), expulsion valve (6), suction endless tube (7), discharge endless tube (8), distributing valve (9), feedback gas motor (10) and pump seat (11) etc.

It is characterized in that adopting tubular barrier film to replace traditional garden disc-shaped diaphragm, annular pneumatic actuator chamber and garden cylindricality transfusing chamber that tubular barrier film and concentric metal sleeve constitute rely on tubular barrier film to carry liquid to internal strain realization transfusing chamber volume-variation,

(1). described tubular barrier film and the sealed at both ends groove of metal sleeve are to lock by the awl piece at supporting frame two ends to realize being tightly connected,

(2). described suction valve and expulsion valve all are one-way valves, adopt ball valve, cone valve or plate valve all can,

(3). the structure of described inner support frame is that section is three fork-shapeds or other shape,

(4). described distributing valve is a rotary valve, relies on air inlet to feed back rotational valve core to realize some radially air flues on the valve body in turn for exhaust.Spool is provided with the balanced radial force groove,

(5). described feedback gas motor is to rely on air inlet to feed back to drive the distributing valve spool synchronously in the same way, with mechanism--the radial plunger type five cylinder gas motors of realizing ten barrier film actuator chambers are taken turns distribution.

2, according to the described pneumatic tubular diaphragm pump of claim 1, it is characterized in that multitube (ten pipes) is radial arrangement and axially-aligned constitutes the pump housing, rely on distributing valve and feedback driving mechanism thereof to be each pipe distribution in turn, the work of realization multiaction, therefore, can be designed to different pressure, flow series by supply gas pressure, pipe number, caliber.

3, according to the described pneumatic tubular diaphragm pump of claim 1, in addition the material of part and barrier film can be according to selecting with the compatibility of conveying liquid to it is characterized in that the described pump housing.

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