CN216397163U

CN216397163U - Metal sundry detection alarm and automatic isolation device for coal flow system

Info

Publication number: CN216397163U
Application number: CN202123011326.9U
Authority: CN
Inventors: 周鹏; 刘绪玉; 赵志龙; 唐小伟; 张峻
Original assignee: Inner Mongolia Mengtai Buliangou Coal Industry Co ltd
Current assignee: Inner Mongolia Mengtai Buliangou Coal Industry Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-04-29
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to the technical field of metal sundries detection of a coal flow system, in particular to a metal sundries detection alarm and automatic isolation device of the coal flow system, which comprises a sorting field, wherein automatic isolation equipment is movably connected above the sorting field, a belt conveyor is installed on one side of the top end of the sorting field, a coal chute is arranged at the bottom end of the sorting field, a metal detector is installed above the belt conveyor, an external sound and light alarm device is installed near the head of the belt conveyor, the automatic isolation equipment comprises a flashboard, a starting and stopping jack, a pushing jack and a walking trolley, and the walking trolley is movably connected above the coal chute. The utility model realizes the detection and alarm functions of ferromagnetic and non-magnetic metals, realizes the isolation and pickup operation without stopping, makes up the defects of the function of the permanent magnet iron remover, and finishes the cleaning work of various metal impurities on the surface and the bottom of the coal flow after being used together with the iron remover.

Description

Metal sundry detection alarm and automatic isolation device for coal flow system

Technical Field

The utility model relates to the technical field of metal sundries detection of a coal flow system, in particular to a metal sundries detection alarm and automatic isolation device of the coal flow system.

Background

In the production of underground coal mine coal mining working faces and driving working faces, metal objects can enter raw coal due to misoperation of workers in equipment maintenance and production operation, the metal objects with different shapes and sizes mixed in the raw coal transportation can damage a conveyor belt of a crusher or a belt conveyor, the crusher can be damaged, an adhesive tape can be torn or a bin blockage accident can be caused in serious cases, in addition, the situation that an electric detonator is mistakenly fed into a coal flow system also exists when blasting operation is carried out on the driving working faces, and serious potential safety hazards are brought to coal separation operation and coal customers;

in order to avoid the accidents and the potential safety hazards, various metal devices, sundries and the like are effectively controlled to enter the coal flow system, the accidents are avoided, various safety risks are reduced, the production is ensured to be carried out safely and smoothly, and the detection and the removal of the various metal sundries in the coal flow system become an important work content.

The existing mature metal sundries removing equipment is a permanent magnet iron remover, which is generally arranged at the head part or the middle part of a belt conveyor and is mainly used for removing iron and other magnetic materials mixed in raw coal, but the iron removing efficiency of the existing permanent magnet iron remover is generally not high, the main reason is that iron substances buried at the bottom of coal flow are subjected to smaller electromagnetic force and are also subjected to the pressure action of upper coal, so the iron removing effect is not good, in addition, because some weak magnetic metal sundries are required to realize absorption type separation, particularly in the material motion state, the difficulty is great, in addition, the iron remover can only remove ferromagnetic metal, but non-ferromagnetic metal and weak magnetic metal (stainless steel, high manganese steel, aluminum, electric detonator and the like) can not be effectively detected and removed, when the large metal sundries which can not be removed by the iron remover enter a raw coal transportation system, the shutdown and the normal operation of the production is influenced, moreover, frequent starting of the equipment will reduce the service life of the electromechanical equipment, and therefore, a metal impurity detection alarm and automatic isolation device for a coal flow system is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems, the utility model aims to provide a metal impurity detection alarm and automatic isolation device for a coal flow system, so as to solve the problem that the iron removal efficiency of the permanent magnet iron remover in the prior art is generally low.

In order to achieve the purpose, the utility model provides the following technical scheme:

a coal flow system metal debris detection alarm and automatic isolation device comprises:

the letter sorting place, letter sorting place top swing joint has automatic isolation equipment, belt conveyor is installed to letter sorting place top one side, and letter sorting place bottom is provided with swift current coal mouth, the metal detector is installed to belt conveyor top, and near belt conveyor aircraft nose installs outside audible-visual alarm device.

Preferably, automatic isolation equipment includes the flashboard, opens and close the jack, passes jack and walking dolly, the walking dolly is not equipped with bottom and top, walking dolly swing joint is in swift current coal mouth top, be provided with between walking dolly and the letter sorting place and pass the jack, the frame is all installed to both sides around the walking dolly bottom, and all swing joint has the flashboard in the frame, after the flashboard combination with the bottom of dolly is fit for mutually, both sides all are provided with to open and close the jack around the walking dolly bottom, and the flashboard drives through opening and close the jack and opens and close.

Preferably, the frame inner wall both sides have all been seted up the spout, and two sets of all sliding connection has the slider in the spout, and the slider is fixed respectively at flashboard both sides outer wall.

Preferably, the sealing gaskets are glued to one side, close to the two groups of gate plates, and the sealing gaskets are attached to each other.

Preferably, the walking tracks are arranged on the front side and the rear side of the top end of the sorting field, and the bottom end of the walking trolley is connected to the upper portion of the walking tracks in a sliding mode.

Preferably, all be fixed with the lug in the swift current coal mouth inner wall both sides, and the lug inner wall all has a limiting plate, two sets of through pivot swing joint the limiting plate all welds with the one side that deviates from mutually and between the swift current coal mouth inner wall has the spring.

Preferably, the alarm time of the external sound-light alarm device is the time difference between the metal impurities detected on the belt conveyor and the metal impurities arriving at the head position of the belt conveyor.

Preferably, the closing time of the flashboard is less than the alarm time of the external sound-light alarm device.

Compared with the prior art, the utility model has the beneficial effects that:

the metal sundry detection alarm and automatic isolation device of the coal flow system is provided with a sorting field, a walking track, automatic isolation equipment, a flashboard, a belt conveyor, a start-stop jack, a coal sliding port, a pushing jack, a walking trolley, a metal detector and an external sound-light alarm device, wherein the metal detector is firstly adopted to detect the coal conveyed above the belt conveyor, the metal detector alarms and drives an execution mechanism to act when the metal sundries exist, in addition, a set of external sound-light alarm device is additionally arranged near the head of the belt conveyor, the sound-light alarm is carried out when the metal detector detects the metal sundries, the automatic isolation equipment is parallelly connected and locked to act, wherein the flashboard in a frame is driven to start and stop by the start-stop jack, the coal is normally unloaded into the coal sliding port after being started, the coal and the metal sundries are unloaded onto the flashboard after being closed, the pushing jack pushes the walking trolley to walk along the walking track, the utility model realizes the detection and alarm functions of ferromagnetic and nonmagnetic metals, realizes the isolation and pickup operation without stopping the machine, makes up the function deficiency of a permanent magnet iron remover, and finishes the cleaning work of various metal sundries on the surface and the bottom of the coal flow after the iron remover is used together.

Drawings

FIG. 1 is a schematic sectional elevation view of the structure of the present invention;

FIG. 2 is a schematic top cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic top sectional view of a portion of the automatic isolation apparatus of FIG. 1 according to the present invention;

fig. 4 is an enlarged view of the structure at a in fig. 1 according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: a coal flow system metal debris detection alarm and automatic isolation device comprises:

letter sorting place 1, letter sorting place 1 top swing joint has automatic isolation equipment 3, and automatic isolation equipment 3 includes flashboard 4, opens and close jack 6, passes jack 8 and walking dolly 9, walking dolly 9 is not equipped with bottom and top, and walking dolly 9 swing joint all installs walking track 2 in swift current coal mouth 7 top around the 1 bottom in letter sorting place, and walking dolly 9 bottom sliding connection is in walking track 2 top, through being provided with walking track 2, can make walking dolly 9 more steady when removing, can not change its direction of removal easily.

Be provided with between walking dolly 9 and the letter sorting place 1 and pass jack 8, the frame is all installed to both sides around walking dolly 9 bottom, and all swing joint has flashboard 4 in the frame, 4 make up the back with the bottom of dolly is fit for mutually, and one side that two sets of flashboards 4 are close to mutually all is glued and is sealed the pad, and laminate each other between the sealed pad, through being provided with sealed pad, when two sets of flashboards 4 are laminated each other, can effectual improvement its leakproofness, the spout has all been seted up to frame inner wall both sides, all sliding connection has the slider in two sets of spouts, and the slider is fixed respectively at flashboard 4 both sides outer wall, through being provided with slider and spout, when flashboard 4 opened and close through opening and close 6 drives of jack, convenience when can effectual improvement its removal.

Both sides all are provided with around walking dolly 9 bottom and open and close jack 6, open and close jack 6 and pass jack 8 and supply liquid by the tensioning hydraulic power unit on the belt conveyor 5, carry out hydraulic control by two sets of solenoid valves, and flashboard 4 opens and close through opening and close jack 6 drive, belt conveyor 5 is installed to 1 top one side in letter sorting place, and 1 bottom in letter sorting place is provided with swift current coal mouth 7, swift current coal mouth 7 inner wall both sides all are fixed with lug 12, and lug 12 inner wall all has limiting plate 13 through pivot swing joint, two sets of limiting plates 13 and the one side that deviates from mutually and swift current coal mouth 7 inner wall between all the welding have spring 14, through lug 12, under limiting plate 13 and spring 14's the mating reaction, can carry on spacingly to coal.

A metal detector 10 is arranged above the belt conveyor 5, the metal detector 10 is GJT-14b type, the GJT-14b type metal detector 10 is used for detecting and alarming ferromagnetic and nonmagnetic metals in a coal flow system, various metal substances mixed in raw materials are detected, an actuating mechanism is driven to act by utilizing induction types generated when the metals enter a sensor electromagnetic field through a signal amplification processing circuit, so that harmful metals are detected, the input voltages of the metal detector 10, an electromagnetic valve and a permanent magnet iron remover are the same and are all alternating current 220V, an external acousto-optic alarm device 11 is arranged near the head of the belt conveyor 5, a power supply line of the external acousto-optic alarm device 11 and an automatic isolation device 3 control the power supply line of the electromagnetic valve are connected with a time delay power-off time relay and a time delay power-on time relay, so as to realize external acousto-optic alarm, And closing the interlocking gate plate 4, interlocking and pushing after the gate plate 4 is closed, and stopping the sequential operation of pushing, wherein the starting time of the external sound-light alarm device 11 is the time difference between the detected metal impurities on the belt conveyor 5 and the arrival of the metal impurities at the head position of the belt conveyor 5. The utility model realizes the detection and alarm functions of ferromagnetic and non-magnetic metals, realizes the isolation and pickup operation without stopping, makes up the defects of the function of the permanent magnet iron remover, and finishes the cleaning work of various metal impurities on the surface and the bottom of the coal flow after being used together with the iron remover.

The working principle is as follows: when the equipment normally operates, the automatic isolation equipment 3 is positioned above the coal chute opening 7, the flashboards 4 are opened, coal unloaded by the belt conveyor 5 falls into the coal chute opening 7 through openings between the flashboards 4, when the metal detector 10 detects metal sundries in a coal flow system to give an alarm, the electromagnetic valves of the flashboards 4 act to control the flashboards 4 to be closed, the metal sundries are conveyed to one end of the belt conveyor 5 by the belt conveyor 5, the metal sundries and the coal around the metal sundries are unloaded onto the flashboards 4, after the alarm of the external acousto-optic alarm device 11 is finished, the jack 8 is pushed to act to push the automatic isolation equipment 3 and the metal sundries to the sorting site 1, the coal at the rear part continues to be unloaded into the coal chute opening 7, the automatic isolation equipment 3 is pushed to the sorting site 1, the electromagnetic valves are powered off after the delay time, the pushing jack 8 stops supplying the liquid, the operation personnel unload the isolation materials to the sorting site 1, resetting the automatic isolation equipment 3, and carrying out the next detection and sorting operation, wherein in the working process, the closing time of the flashboard 4 is shorter than the alarm time of the external audible and visual alarm device 11, and when the metal sundries are transported to the coal chute opening 7 through the metal detector 10, the flashboard 4 should finish the closing operation, so as to ensure that the metal sundries fall on the flashboard 4, and the operation is finished.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a coal flow system metal debris detection warning and automatic isolating device which characterized in that includes:

2. The device for detecting, alarming and automatically isolating the metal impurities in the coal flow system according to claim 1, is characterized in that: the automatic isolation equipment comprises a flashboard, an opening and closing jack, a pushing jack and a walking trolley, wherein the walking trolley is not provided with a bottom end and a top end, the walking trolley is movably connected above a coal sliding port, the pushing jack is arranged between the walking trolley and a sorting field, frames are arranged on the front side and the rear side of the bottom end of the walking trolley, flashboards are movably connected in the frames, the flashboards are combined and then fit with the bottom end of the trolley, the opening and closing jack is arranged on the front side and the rear side of the bottom end of the walking trolley, and the flashboards are driven to open and close by opening and closing the jacks.

3. The device for detecting, alarming and automatically isolating the metal impurities in the coal flow system according to claim 2, is characterized in that: the frame inner wall both sides have all been seted up the spout, and are two sets of all sliding connection has the slider in the spout, and the slider is fixed respectively at flashboard both sides outer wall.

4. The device for detecting, alarming and automatically isolating the metal impurities in the coal flow system according to claim 2, is characterized in that: and sealing gaskets are glued on one sides of the two groups of gate plates close to each other, and the sealing gaskets are mutually attached.

5. The device for detecting, alarming and automatically isolating the metal impurities in the coal flow system according to claim 2, is characterized in that: the walking tracks are installed on the front side and the rear side of the top end of the sorting field, and the bottom end of the walking trolley is connected to the upper portion of the walking tracks in a sliding mode.

6. The device for detecting, alarming and automatically isolating the metal impurities in the coal flow system according to claim 1, is characterized in that: the inside wall both sides of coal chute mouth all are fixed with the lug, and the lug inner wall all has a limiting plate, two sets of through pivot swing joint the limiting plate all welds with the one side that deviates from mutually and between the coal chute mouth inner wall has the spring.

7. The device for detecting, alarming and automatically isolating the metal impurities in the coal flow system according to claim 1, is characterized in that: the alarm time of the external sound-light alarm device is the time difference between the metal impurities detected on the belt conveyor and the metal impurities reaching the head of the belt conveyor.

8. The device for detecting, alarming and automatically isolating the metal impurities in the coal flow system according to claim 7, is characterized in that: the closing time of the flashboard is less than the alarming time of the external sound-light alarming device.