RU34408U1 - Pneumopulse device for cleaning the inner surface of pipelines - Google Patents

Abstract

An air-pulse device for cleaning the inner surface of pipelines, comprising a hollow body divided by a stepwise movable piston into an inlet and a control chamber interconnected by an axial channel in the piston and having discharge openings, characterized in that the piston is spring loaded on the side of the control chamber and the inlet is openings The camera has the ability to communicate with the environment.

Description

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PNEUMPULSE DEVICE FOR CLEANING

PIPELINE INTERIOR

The inventive utility model relates to the cleaning of the inner surface of pipelines, for example, in a water supply system, and can be used to clean industrial pipelines pumping heavily contaminated liquids, up to the pulp, as well as for loosening caked sediment in settling tanks and cooling tower tanks and for breaking up solid materials.

A device for cleaning the inner surface of a pipeline is known, which comprises a housing divided by a piston into an inlet and outlet chamber, the inlet chamber being connected to a compressed air source by a tube, and the discharge chamber communicating with an inlet through an annular gap between the piston and the air-conducting tube. The piston is made stepwise and moves under the action of the difference of pressure forces from the inlet and discharge chambers. Discharge holes are located in front of the housing.

IPC 08 to 5/02 V 08 V 9/04

The disadvantage of this analogue is that with incomplete emptying of the discharge chamber, situations are possible when pressure remains in the cavity between the piston and the housing. In this case, both stages of the piston work to open the piston, which gradually opens the dropping holes, creating a stable equilibrium between the flow rate of the incoming air and its flowing air. The operation of such a device is unstable and requires fine adjustment of the determining operating parameters.

The closest analogue of the claimed utility model in technical essence is a pneumatic pulse device for cleaning the inner surface of pipelines, containing a hollow body, divided by a stepwise movable piston into the input and control (it is also cumulative) chambers. The latter is communicated by means of discharge holes with the environment and has a discharge channel in the cavity of the second piston stage, while the discharge holes are made in the rear of the housing.

For reliability, this device is inefficient due to the location of the discharge holes in the rear of the case.

The task to which the claimed utility model is directed is to increase the efficiency of the device.

with a movable piston to the input and control chambers, interconnected by an axial channel in the piston, the piston from the side of the control chamber being spring-loaded, and the input chamber by dropping; their openings can be connected to the environment.

Distinguishing from the prototype (the closest analogue), the essential features of the claimed utility model are “the piston is spring-loaded from the side of the control chamber and“ by means of dropping openings, the inlet chamber is able to communicate with the environment.

The drawing shows the inventive device in the filling position of the input chamber.

Pneumopulse device for cleaning the inner surface of pipelines contains a hollow body 1, divided by a step piston 2 into the inlet chamber 3 and the control chamber 4. The inlet chamber 3 is connected through a nozzle 5 to a source of compressed air (not shown in the figure). The inlet chamber 3 is connected to the control chamber 4 with an axial calibrated channel 6 made in the piston 2. The piston 2 is made stepwise, is spring-loaded 7 from the side of the control chamber 4 to the inlet 8 and can move under the influence of the pressure difference from the inlet chamber 3 to the piston area 2, facing the inlet 8, as well as the area of the second stage 9

the piston 2, and from the side of the control chamber 4. In the housing 1, there are through-through discharge holes 10 through which, when the piston 2 is opened, air is ejected from the inlet chamber 3 with the formation of an intense jet acting on the inner surface of the pipeline.

The device operates as follows. Air from the high pressure source through the nozzle 5 enters the chamber 3 and through the channel 6 into the chamber 4. The piston 2 is spring-loaded and the valve pair is closed, while the pressure in the chamber 4 is less than the pressure in the chamber 3 by the amount of pressure loss along the length of the channel 6. The area of the piston 2 facing the outlet 8 is 10-15% larger than the area of the end surface of the piston 2 from the side of the chamber 4, the force difference is compensated by the spring 7. As the chamber 3 is filled, the force acting on the piston 2 over the area of the opening 8 increases and ultimately superior to si moment acting on the piston from the chamber 4, and the force of the spring 7. At this point, the piston 2 begins to move to the left and opens the opening 8 through which the air enters the second stage 9 of the piston. In this case, the area of influence and the force from the pressure of the air flowing out of the inlet chamber 3 sharply increase and, consequently, the speed of opening the piston increases. In its extreme left position, the piston 2 instantly opens the discharge holes 10 and there is a sharp discharge of air from the inlet chamber 3 into the environment with the formation

air stream and shock wave, which affect the surface being cleaned near the front of the device. After emptying the inlet chamber 3, the piston 2 under the action of the spring 7 closes the outlet 8 and the cycle of the device is repeated.

Thus, the proposed device allows the cleaning of pipelines with any degree of pollution quite efficiently.

Claims (1)

An air-pulse device for cleaning the inner surface of pipelines, comprising a hollow body divided by a stepwise movable piston into an inlet and a control chamber interconnected by an axial channel in the piston and having discharge openings, characterized in that the piston is spring loaded on the side of the control chamber and the inlet is openings The camera has the ability to communicate with the environment.