RU1768330C - Pulse blast cleaning device - Google Patents

Description

1

(21) 4877728/12

(22) 09.21.90

(46) 10/15/92. Bull. No. 38

(75) S.V. Viktorov. M.R. Barlybaev and P.P. Lyu

(56) Copyright certificate of the USSR No. 1183206. cl. B 08 V 5/02, 198.3.

(54) PNEUMULATED PRODUCT CLEANING DEVICE

(57) Use: for treating articles of materials with jets of compressed air, in particular for cleaning the surface of articles from deposits. The device contains a hollow body (PC) with an exhaust pipe (VT), the PC is equipped with a diaphragm (D) installed at the end of the VT with the PC divided into two parts and with the possibility of periodically blocking the end face (T) of the VT located inside the PC, differential pneumatic cylinder (DPC) ) made of two cylinders (C) with different diameters and respectively placed in these cylinders and connected

 between each other by a piston rod (P), the DCC is located outside the PC and communicates with the part of the PC that has a VT through two pipelines (T), and the third with a different cavity - a chamber (K), holes (О) in the DCC for two T, associated with the PC are located respectively on the side of P, and O in the DCC for the third T connected to K and O to communicate the cavity C of the DCC with the atmosphere are made in the wall C between P, respectively, at the end of this TS and at the junction of two Cs, and the compressed gas supply system is in communication with the end face C. The compressed gas entering the center moves P and fills the PC when passing P O. It fills and presses A to T. With a further increase in pressure P take PC s initial position and announces to the atmosphere. D G opens T and all the air from the PC through VT is set to C /) is remanded to the zone of influence on the material G to be processed. Next, the cycle repeats automatically. 1 ill. S

The invention relates to a pneumatic pulse technique for cleaning products from deposits by air jets, collapsing caking bulk materials and can be used in the energy, railway, construction, chemical, metallurgical industries, agriculture and other industries.

The aim of the invention is to increase reliability and improve operating conditions.

The drawing shows "the proposed pneumopulse device.

Pneumopulse device contains a hollow body 1, the exhaust pipe 2,

one end of which is located in the cavity of the housing 1 - end 3, and the other end 4 on the outside. The end face 3 abuts against the coaxially located elastic diaphragm 5, fixed by means of the cover 6 to the housing 1 with the formation of the chamber 7, with the possibility of periodic closure by the diaphragm 5 of the end 3. Outside, the housing 1 is equipped with a differential pneumatic cylinder 8 made in the form of two cylinders connected in series with different diameters cavities: a cylinder 9 with a larger diameter and a cylinder 10c with a smaller diameter, and a differential piston 11 located in these cylinders 11. consisting of a large diameter piston 12, a smaller piston 13

VI

About 00

with

00

about

the diameter of the rod 14, connecting from each other.

The pneumatic cylinder 8 is in communication with the cavity of the housing 1 having an exhaust pipe 2 through two pipelines - piping 15 and 16, and a third pipe 17 with a chamber 7 of the housing 1. holes in the cylinder

8 for two pipelines 15 and 16 connected with the cavity of the housing 1 with the exhaust pipe 2 are located respectively on the piston side: with a larger diameter 12, a hole 18, with a smaller diameter 13, a hole 19, and a hole 20 in the cylinder 8 for the third pipe 17 associated with the chamber 7 of the housing 1, and the hole 21 for communicating the cavity of the cylinder 8 with the atmosphere is made in the wall of the cylinder 10 with a smaller diameter between the large 12 and small 13 pistons, respectively, at the end face of the cylinder Shi in the joint zone of the two cylinders

9 and 10. The compressed air supply system is in communication with the end face of the cylinder 10 of smaller diameter by means of a pipe 22 and a valve 23.

The device operates as follows.

The exhaust pipe 2 with the end 4 is sent to the impact zone - on the surface to be cleaned for cleaning deposits or bulk material for its loosening and collapse. When the valve 23 is opened, compressed air enters through the pipe 22 into a cylinder 10 with a smaller diameter and simultaneously starts to move the piston 13 and fill the cavity of the hollow body 1 with the exhaust pipe 2. When moving, the piston 13 opens the hole 20 and the compressed air quickly passes through the pipe 17 chamber 7, while ensuring guaranteed pressing of the elastic diaphragm 5 to the end 3 of the exhaust pipe 2, due to the small volume of the chamber 7 and the smaller working area of the diaphragm 5 from the side of the end 3 of the exhaust pipe 2. The pressure in the chamber 7 will be equal to about working pressure P0. The pressure increase in the hollow casing 1 to a certain value Pi forces acting on the pistons 12 and 13 are aligned

Pi

lo

ABOUT

4 J0 4 where O is the diameter of the large piston;

d is the diameter of the smaller piston.

With a further increase in pressure in the cavity of the housing 1 from Pi to Po, the differential piston 11 has moved to its extreme position on the compressed air inlet side, while the openings 20 and 21 communicate with each other and discharge compressed air from the chamber 7 through a pipe 17 to

atmosphere, diaphragm 4 due to the working pressure P0 in the cavity of the housing 1 abruptly opens a hole in the end face 3 of the exhaust pipe 2 and compressed air from the cavity of the housing 1

instantly rushes to the end 4 of the exhaust pipe 2 into the zone of influence on the material to be processed. Due to the pressure drop in the cavity of the housing 1 after the pneumatic shock, it begins to fill again through the pipe 16, and the piston 13 moves towards the large cylinder 9 and communicates the hole 20 with the chamber 7 - the pressure in the latter quickly reaches the value of P0 and ensures a guaranteed compressed elastic diaphragm 5 to the end 3 of the exhaust pipe 2. When the PI pressure is reached in the cavity of the housing 1, the cycle repeats automatically.

The present invention provides improved operating conditions, simplicity of design and increased reliability. The pulse frequency control is provided by the selection of the diameters D and d of the differential piston

c, the volume of the cavity of the housing 1 and chamber 7, and the opening of the valve 23 in the compressed air supply system.

Claims (1)

The claims Pneumopulse device for cleaning products, containing a hollow body, an exhaust pipe, one end of which is placed in the cavity of the body, and the other outside, a pneumatic cylinder having holes for communication with the body cavity and with the atmosphere, and a compressed gas supply system in communication with a pneumatic cylinder, characterized in that, in order to increase operational reliability and improve conditions operation, the pneumatic cylinder is made differential in the form of two cylinders connected in series with different diameters and respectively placed in these cylinders and connected between a piston rod, and the housing is equipped with a diaphragm mounted at the end of the exhaust pipe with the separation of the body cavity into two parts and with the possibility of periodically blocking this end of the pipe, while the cylinder is placed outside the housing and communicates with a part of the body cavity having an exhaust pipe through two pipelines and the third - with a different body cavity, the holes in the cylinder for two pipelines connected to a part of the body with the exhaust pipe are located respectively on the side of pistons with a larger diameter and smaller their diameter, and the hole in the cylinder for a third pipeline connected to another part of the body cavity, and the hole for communicating the cavity of the pneumatic cylinder with the atmosphere is made in the cylinder wall with a smaller diameter between the large and small pistons, respectively, at the end of this cylinder and at the junction of the two cylinders, and the compressed gas supply system is in communication with the end face of the small diameter cylinder.