SU1315948A1 - Device for applying paste-like coating on belt - Google Patents

Abstract

BACKGROUND OF THE INVENTION The invention relates to devices for repairing large-scale conveyor belts. The purpose of the invention is to understand the reliability of process control under conditions of a significant amount of non-uniform paste consumption. The device comprises a paste supply source in the form of containers 1.2 with a means of leveling the paste 7 on the tape and a pneumatic control unit. ; "I about € (L W 13 v (f / 00 01 (G 4 eo

Description

including a measuring nozzle 8, means for controlling the flow and pressure of compressed air in the throttles 9, the pressure reducing valve 10 and the pressure sensor 11, the bypass line 13 with normal closed valve 14, the drive of which is connected to the pressure sensor

The invention relates to devices for the repair of large-scale conveyor belts; it can be used directly on enterprises operating conveyors without removing the belt from the conveyor and without first cutting it.

The purpose of the invention is to increase the reliability of the device under conditions of considerable volume and uneven paste consumption.

The drawing schematically shows the proposed device.

A device for applying a pasty two-component coating to the reconstructed surface of the conveyor belt without removing the latter from the conveyor contains a source of supply of flippers, made in the form of containers I and 2, containing constituent components of the paste and connected to pumps 3 and 4. a source of paste supply to the tape, made, for example, in the form of a screw device 5, which ensures the mixing of components before applying the paste to the restored surface of the conveyor belt 6. Means - The ny paste on the ribbon BE) 1 is filled in the form of a V-shaped plow 7, facing its concave surface (the configuration of the plow is not shown) to the source 5 of the paste supply. The device also contains a pneumatic measuring control unit, which includes a measuring nozzle 8, means for controlling the flow rate and pressure of compressed air, made in the form of throttles 9, pressure reducing valve 10 and pressure sensor AND installed on the pipeline

11, the measuring nozzle B being placed in the paste leveling means 7 parallel to the movement of the tape. The invention can be used directly in enterprises operating conveyors without removing the belt from the conveyor and without first cutting it. I il.

0

five

15

20 30 35 40 12, as well as a bypass pressure line, which is a pipe 13 connected to the nozzle 8, in which a normally closed valve 14 is installed, for example, with an electromagnetic actuator that is electrically connected to the pressure sensor 11 . The measuring nozzle 8 is placed in the paste leveling means on the tape, i.e. in the plow 7, parallel to the conveyor belt 6. The pressure sensor 11 is connected with the electromagnet of the valve 14, the drive of the pumps 3 and 4 and the time relay (not shown). The check valve 15 is placed on the line between the nozzle 8 and the throttle 9. The entrance of the pipeline 13 is in communication with a source of compressed air (not shown), and the output through the pipe 12 with the nozzle 8.

The device for applying a pasty coating on the tape works as follows.

When the drive of the pumps 3 and 4 and the screw device 5 is turned on, the components from the containers 1 and 2 enter the screw device 5, are mixed and fed to the restored surface of the conveyor belt. The movement of the conveyor belt (or, in the case of its immobility, to the installation as a whole) is communicated simultaneously with the air supply to the pneumatic control unit. Compressed air enters the reducing valve 10, the throttle 9 and through the check valve 15 to the measuring nozzle 8. The normally closed valve 14 blocks the passage of air through it, because in the absence of paste accumulation at the exit of the nozzle 8, the pressure in the pipeline 12,

on which pressure sensor 11 is installed, is minimal.

As the paste accumulates in front of the plow 7 (a feature of which is its time limited viability, which requires some overlapping of the flow requirements and timely shutdown of the pumps and the screw device), the output section of the nozzle 8 installed at a certain level overlaps. This increases the resistance to the outflow of air from the nozzle 8, the pressure in the pipe 12 is increased, the pressure sensor 11 is triggered, turning off the pumps 3 and 4 and the screw device 5 and turning on the valve solenoid 14 and the time relay. Air pressure through the valve 14 through the pipeline I3 enters the nozzle B and blows it, preventing it from further clogging. Since the pumps 3 and 4 and the screw device 5 are disconnected at this time, the accumulated paste at the displacement of the tape or the device as a whole continues to be consumed and its level begins to fall. The time relay switches on the pumps 3 and 4 after a certain period, the screw device 5 and turns off the valve solenoid 14. At the same time, the paste again begins to feed the conveyor 6 to I. Gorn’s Order 2359/49

Compiled by N. Gondaksazova

Tehred L. Oliynyk Proofreader G. Reshetnik

Circulation 863 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

13159484

The valve 14 is closed, and reduced pressure air is again supplied to the nozzle 8 (through line 12 from the reducing valve 10, throttles 5 to 9 and the check valve 15).

Claims (1)

Invention Formula A device for applying a paste coating on a tape, containing a paste supply source with a paste leveling agent on a tape, communicated with a source of compressed air, a pneumatic measuring control unit including a measuring nozzle, flow control means and pressure. compressed air and pressure sensor, characterized in that, in order to increase the reliability of the device under conditions of significant volume and uniform consumption of the paste, the pneumatic control unit is equipped with a bypass high pressure line, the output of which is communicated with the measuring nozzle, which is located in the paste leveling device parallel to the belt, and the inlet with a source of compressed air, with a normally closed valve in the bypass line, the actuator of which is connected to a pressure sensor.