CN212563797U

CN212563797U - Telescopic dust suction port device of dust removal fan

Info

Publication number: CN212563797U
Application number: CN202021294349.8U
Authority: CN
Inventors: 赵磊; 张汉青; 李新立; 王昌文; 于海明; 刘新文; 张春辉
Original assignee: Yankuang Group Corp Ltd; Yanzhou Coal Mining Co Ltd
Current assignee: Yankuang Group Corp Ltd; Yanzhou Coal Mining Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-02-19
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a telescopic dust absorption mouth device of dust exhausting fan. For filling prior art blank, this dust exhausting fan's telescopic dust absorption mouth device is including fixed dust absorption pipe, suction hood and telescoping device, the suction hood includes square frame, toper section and tail pipe, the telescoping device includes interior side pipe, outside pipe, fixed ferrule and telescoping cylinder, it is intraductal that the rear portion inserts the outside pipe in the interior side pipe, interior side pipe front end stretches out outside the outside pipe, and weld at a preceding support horizontal pole middle part, fixed ferrule is fixed at outside pipe rear portion, square frame is fixed in the front on supporting the horizontal pole, fixed dust absorption pipe is fixed on fixed ferrule, be connected with corrugated expansion hose between tail pipe and the fixed dust absorption pipe, the telescoping cylinder includes the piston rod, the cylinder body, hydraulic pressure valves and be furnished with the high-pressure liquid pipe, wherein the cylinder body is fixed in outside pipe one side, the piston rod front end is connected in the front on supporting. The utility model discloses dust exhausting fan's telescopic dust absorption mouth device simple structure, flexible convenience extensively are applicable to all kinds of collieries.

Description

Telescopic dust suction port device of dust removal fan

Technical Field

The utility model relates to a telescopic dust absorption mouth device of dust exhausting fan.

Background

The dust concentration is large during the production of the fully mechanized excavation working face of the coal mine, the visibility is low, the working environment is severe, and workers can easily inhale a large amount of dust (particularly respiratory dust) to cause pneumoconiosis when working in the environment; in addition, the dust is explosive, and seriously affects the safe production of mines.

Therefore, effective measures must be taken to control the diffusion and flying of dust, improve the underground operation environment and ensure the physical health of workers, and the method is an important task in mine safety production.

Along with the improvement of the mechanization degree of a mine, the dust yield of a working face is greatly increased due to the use of the fully-mechanized excavating machine, and the dust removal amount is limited only by the aid of the onboard spraying of the excavating machine and the dust removal fan for the fully-mechanized excavating face of a coal roadway for a long time. And the dust removal fan is fixed at the front end of the tunneling machine and cannot move, so that the sight of a driver is influenced, and the tunneling quality is reduced.

The prior art urgently needs a telescopic dust suction opening device of a dust removal fan with simple structure and convenient stretching.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is how to fill the blank of prior art, provide a simple structure, flexible convenient dust exhausting fan's telescopic dust absorption mouth device.

In order to solve the technical problem, the telescopic dust suction opening device of the dust removal fan comprises a fixed dust suction pipe and is characterized in that: it also comprises a dust hood and a telescopic device, wherein the dust hood consists of a square outer frame, a tail pipe and a conical section connected between the square outer frame and the tail pipe, the telescopic device comprises an inner square pipe, an outer square pipe, a fixed pipe hoop and a telescopic cylinder, wherein the middle rear part of the inner square tube is inserted into the outer square tube, the front end of the inner square tube extends out of the outer square tube and is welded at the middle part of a front supporting cross bar, the fixed pipe hoop is fixed at the rear part of the outer square pipe, the square outer frame of the dust hood is fixed on the front supporting cross rod, the fixed dust absorption pipe is fixed on the fixed pipe hoop, a corrugated expansion hose is connected between the tail pipe of the dust absorption cover and the fixed dust absorption pipe, the expansion cylinder comprises a piston rod, a cylinder body, a hydraulic valve group and a high-pressure liquid pipe, the cylinder body is fixed on one side of the outer square pipe, the middle rear part of the piston rod extends into the cylinder body, and the front end of the piston rod is connected to the front support cross rod.

By the design, when a driver of the heading machine needs to check the front coal wall, the telescopic cylinder is contracted only by operating the hydraulic valve group to drive the front support cross rod and the dust hood on the front support cross rod to move backwards, and the corrugated telescopic hose is contracted; when the corrugated telescopic hose does not need to be checked, the telescopic cylinder is extended only by operating the hydraulic valve group to drive the front support cross rod and the dust hood on the front support cross rod to move forwards, and the corrugated telescopic hose is extended, so that the corrugated telescopic hose is very convenient.

As optimization, two supporting cross rods are further arranged below the outer square pipe. By the design, the fixing is convenient.

The utility model discloses dust exhausting fan's telescopic dust absorption mouth device simple structure, flexible convenience extensively are applicable to all kinds of collieries.

Drawings

The telescopic dust suction port device of the dust removing fan is further explained by combining the attached drawings as follows:

FIG. 1 is a schematic perspective view of the retractable dust suction port of the dust exhaust fan;

fig. 2 is a schematic perspective view of the retractable device of the retractable dust suction port device of the dust removing fan.

In the figure: 1 is a fixed dust suction pipe, 2 is a dust suction cover, 3 is a telescopic device, 21 is a square outer frame, 22 is a tail pipe, 23 is a conical section, 31 is an inner square pipe, 32 is an outer square pipe, 33 is a fixed pipe hoop, 34 is a telescopic cylinder, 341 is a piston rod, 342 is a cylinder body, 343 is a high-pressure liquid pipe, 35 is a front support cross rod, 36 is a support cross rod, and 4 is a corrugated telescopic hose.

Detailed Description

The first implementation mode comprises the following steps: as shown in fig. 1 and 2, the retractable dust suction port device of the dust removing fan comprises a fixed dust suction pipe 1, a dust suction hood 2 and a retractable device 3, wherein the dust suction hood 2 comprises a square outer frame 21, a tail pipe 22 and a conical section 23 connected between the square outer frame 21 and the tail pipe 22, the retractable device 3 comprises an inner square pipe 31, an outer square pipe 32, a fixed pipe hoop 33 and a retractable cylinder 34, the middle rear part of the inner square pipe 31 is inserted into the outer square pipe 32, the front end of the inner square pipe 31 extends out of the outer square pipe 32 and is welded in the middle of a front supporting cross rod 35, the fixed pipe hoop 33 is fixed at the rear part of the outer square pipe 32, the square outer frame 21 of the dust suction hood 2 is fixed on the front supporting cross rod 35, the fixed dust suction pipe 1 is fixed on the fixed pipe hoop 33, a corrugated retractable hose 4 is connected between the tail pipe 22 of the dust suction hood 2 and the fixed dust suction pipe 1, A cylinder 342, a hydraulic valve set (not shown) and a high pressure liquid pipe 343, wherein the cylinder 342 is fixed on one side of the outer tube 32, the middle rear part of the piston rod 341 extends into the cylinder 342, and the front end of the piston rod 341 is connected to the front support cross bar 35. Two support cross bars 36 are also arranged below the outer square tube 32.

The hydraulic valve set is operated to drive the piston rod 341 to extend or retract, so as to drive the dust hood 2 to extend or retract.

Claims

1. The utility model provides a dust exhausting fan's telescopic dust absorption mouth device, is including fixed dust absorption pipe, its characterized in that: it also comprises a dust hood and a telescopic device, wherein the dust hood consists of a square outer frame, a tail pipe and a conical section connected between the square outer frame and the tail pipe, the telescopic device comprises an inner square pipe, an outer square pipe, a fixed pipe hoop and a telescopic cylinder, wherein the middle rear part of the inner square tube is inserted into the outer square tube, the front end of the inner square tube extends out of the outer square tube and is welded at the middle part of a front supporting cross bar, the fixed pipe hoop is fixed at the rear part of the outer square pipe, the square outer frame of the dust hood is fixed on the supporting cross rod, the fixed dust absorption pipe is fixed on the fixed pipe hoop, a corrugated expansion hose is connected between the tail pipe of the dust absorption cover and the fixed dust absorption pipe, the expansion cylinder comprises a piston rod, a cylinder body, a hydraulic valve group and a high-pressure liquid pipe, the cylinder body is fixed on one side of the outer square pipe, the middle rear part of the piston rod extends into the cylinder body, and the front end of the piston rod is connected to the front support cross rod.

2. The retractable dust extraction port assembly of a dust exhaust fan according to claim 1, further comprising: and two supporting cross rods are further arranged below the outer square tube.