SU1206491A1 - Pneumatic pump - Google Patents

Description

The invention relates to pump construction, in particular, to designs of pneumatic pumps, designed for pumping liquids for washing parts and subsequent blowing with compressed air, and can be used in designing pumps for jet washers and jet-fluid treatment plants that require after jet washing or jet-liquid treatment of blowing (drying) with compressed air.

The aim of the invention is a more rational use of compressed air and precise dosing of compressed air and fluid supplied to the consumer, as well as more precise control of the flow of fluid and air by changing the volumes of fluid and air.

The drawing schematically shows a pneumatic pump with an upper position of the float.

The pneumatic pump contains a working chamber 1 with an inlet valve 2, a discharge pipe 3, a nozzle 4 for supplying compressed air and a float 5 installed with the possibility of axial movement, and 6 are arranged in the discharge pipe 3, the number of which is not less two located at different levels, and two ring bridges 7 and 8 are installed, one of which is placed above the top row, holes 6, and the other below the bottom row of holes 6, with the float 5 fitted with a guide 9 and mounted on will force Flax pipe 3 between the limiters 7 and 8, wherein the injection pipe 3 is provided with a clamp 10 vertically movable. On the case is mounted pipe 11 of the air outlet, and the case is connected by an adapter 12 to the tank 13. Pipe 4 and 11

s 0

50

five

about

0

five

connected to piezoelectric valves 14 and 15, respectively.

Pneumatic pump works as follows.

The liquid from the tank 13 through the inlet valve 2 and the adapter 12 enters the chamber 1, which is connected to the pipe 11. At this, the float 5 rises to the upper position up to the limiter 7, blocking the opening 9 of the upper row 6. After the chamber 1 is filled with liquid, the valve 15 is turned off and the pneumatic-electromagnetic valve 14 is turned on, and compressed air is supplied through the pipe 4. The compressed air entering the chamber 1 displaces the liquid through the lower holes 6 of the pipe 3. The parts are flushed, which continues until the beginning of the lowering of the float 5. Then the float, lowering to limiter B, blocks the lower holes 6 of the guide 9 and opens the upper openings 6, through which compressed air enters the discharge pipe 3 for the purpose of blowing (drying) parts. As soon as the blasting process begins, valve 14 is turned off. The blowing process continues due to the overpressure in chamber 1 until the overpressure equals the pressure of the liquid column in tank 13. At the moment the flush is switched to purge for some time, a mixture of liquid and air is formed in the discharge pipe 3, which contributes better pro-. washing less accessible parts. At the end of the blowdown, the inlet valve 2 opens under the pressure of the liquid coming from the tank 13, the liquid fills the chamber 1, the process repeats.

The axial movement of the discharge pipe 3 by means of the clamp 10 allows the volumes of the pumped liquid and compressed air to be varied.

Claims (2)

1. PNEUMATIC PUMP containing a working chamber with an inlet valve, a discharge pipe, a compressed air supply pipe and a float mounted with the possibility of axial movement, characterized in that, with a view to more rational use of compressed air and accurate dosing of compressed air and liquid supplied to the consumer , on the discharge pipe, holes are made, grouped in rows, the number of which is at least two, located at different levels, and two annular stops are installed, one of which is displacements above the upper row of holes, and the other - to below the lower row of holes, the float is provided with a guide and is mounted on the discharge pipe between the limiters. 2. Pump pop. 1, distinguished by the fact that, for the purpose of more than 9 precise regulation of the flow of liquid and air by changing the volume of liquid and air, the discharge pipe is equipped with a latch for vertical movement.