CN212225298U

CN212225298U - Foam dust removal system for fully-mechanized excavation face dust removal of cantilever type development machine

Info

Publication number: CN212225298U
Application number: CN202020374107.3U
Authority: CN
Inventors: 侯海燕; 郭涛; 李恒; 梅元元; 杨雯雯; 段天文; 杨鹏; 杨歌; 李川; 刘光鑫
Original assignee: China Railway Engineering Service Co Ltd
Current assignee: China Railway Engineering Service Co Ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-12-25
Anticipated expiration: 2030-03-23

Abstract

The utility model belongs to the technical field of the entry driving machine, concretely relates to a foam dust pelletizing system that is used for cantilever type entry driving machine to combine face of digging to remove dust. The problem of dust collecting equipment among the prior art can't use in the long tunnel that does not have the dust removal water pipe, does not have the water source or the tunnel that dust removal water pressure is low is solved. The technical scheme of the utility model is that: comprises a water inlet pipeline, a compressed air pipeline and a foam stock solution conveying pipeline; both ends of the water inlet pipeline are respectively connected with the foam generator and the water tank; two ends of the compressed air pipeline are respectively connected with a compressed air inlet and a foam generator; the two ends of the foam stock solution conveying pipeline are respectively connected with the foam generator and the foam stock solution tank; the foam generator is connected with the foam injection pipeline. The foam dust removal system can be used in a long tunnel without a dust removal water pipe or a water source or a tunnel with too low dust removal water pressure, meets the dust removal requirement of the area outside the fully-mechanized excavating surface of the cantilever type tunneling machine, and is suitable for removing dust of the long tunnel without the water source.

Description

Foam dust removal system for fully-mechanized excavation face dust removal of cantilever type development machine

Technical Field

The utility model belongs to the technical field of the entry driving machine, concretely relates to a foam dust pelletizing system that is used for cantilever type entry driving machine to combine face of digging to remove dust.

Background

The development machine can generate a large amount of dust in the development process, and has great harm to the health of workers and the production safety. At present, the main technical measures for treating dust at home and abroad are as follows: spray dust removal, dust removal by a dust remover, foam dust removal and the like, wherein the foam dust removal efficiency is higher. The foam acts on the dust in a good covering, wetting, adhering and other modes, so that the dust is prevented from diffusing fundamentally, and the dust concentration in the air is effectively reduced. The foam dust removal has the advantages of small water consumption, high dust removal efficiency and the like, and is widely applied to the field of coal mine dust control at home and abroad.

The existing fully mechanized excavating surface dust removing equipment of cantilever type development machines on the market utilizes an underground dust removing water pipe and a compressed air pipeline, a certain amount of additive is added into the water pipe, compressed air is introduced through a special foaming device to generate high-expansion foam, and the foam is sprayed to a dust source through a nozzle. However, the existing dust removing equipment has certain requirements on water pressure, and the existing dust removing equipment can not be used for long tunnels without dust removing water pipes or water sources or tunnels with too low dust removing water pressure. And the existing dust removing equipment only removes dust on the fully-mechanized excavation face of the cantilever type development machine, and cannot meet the dust removing requirement of the area outside the fully-mechanized excavation face.

SUMMERY OF THE UTILITY MODEL

To the problem that dust collecting equipment among the prior art can't use in the long tunnel that does not have the dust removal water pipe, does not have the water source or dust removal water pressure crosses low tunnel, the utility model provides a foam dust pelletizing system that is used for cantilever type entry driving machine to synthesize face of digging to remove dust, its aim at: the dust removing device can be used in a long tunnel without a dust removing water pipe or a water source or a tunnel with low dust removing water pressure.

The utility model adopts the technical scheme as follows:

a foam dust removal system for dust removal of a fully mechanized excavation surface of a cantilever type development machine comprises a water inlet pipeline, a compressed air pipeline and a foam stock solution conveying pipeline; one end of the water inlet pipeline is connected with a foam generator, and the other end of the water inlet pipeline is connected with a water tank; one end of the compressed air pipeline is provided with a compressed air inlet, and the other end of the compressed air pipeline is connected with a foam generator; one end of the foam stock solution conveying pipeline is connected with the foam generator, and the other end of the foam stock solution conveying pipeline is connected with the foam stock solution tank; the foam generator is connected with a foam injection pipeline. The water tank foam stock solution tank, the water inlet pipeline, the compressed air pipeline and the foam stock solution conveying pipeline are all arranged on a support, and the support is arranged on the cantilever type heading machine or on the ground.

After the technical scheme is adopted, water in the water tank, foam stock solution in the foam stock solution tank and compressed air are respectively conveyed to the foam generator to generate foam, and the foam is sprayed on the fully-mechanized excavating surface through the foam spraying pipeline to remove dust. This foam dust pelletizing system does not have the dust removal water pipe, does not have the long tunnel of water source or dust removal water pressure and all can use in crossing the tunnel, when the lack of water in the water tank, only need to water to the water tank in can. The foam dust removal system can remove dust on the fully mechanized excavation face of the cantilever type excavator with various specifications, and foams act on dust in a good covering, wetting, adhering and other modes, so that the dust is prevented from being diffused fundamentally, and the dust concentration in the air is effectively reduced. The system is simple and reliable, the water consumption is small, the dust removal effect is good, and the system is particularly suitable for long tunnel construction lacking water sources.

Preferably, the foam injection pipeline comprises a handheld foam injection pipeline, and one end of the handheld foam injection pipeline is provided with a handheld nozzle.

After the preferred scheme is adopted, the dust can be removed by spraying the foam through the handheld nozzle in the area outside the fully-mechanized excavating surface of the cantilever type excavator, so that the area covered by the foam dust removal is improved, and the dust removal effect is improved.

Preferably, the foam injection pipeline comprises a nozzle pipeline, the nozzle pipeline is arranged along the circumferential direction of a drill rod of the cantilever type tunneling machine, a plurality of nozzles are uniformly arranged on the nozzle pipeline, and the nozzles are connected with the nozzle pipeline through adjustable ball joints.

After the preferred scheme is adopted, the spraying angle of the nozzle can be adjusted by rotating the adjustable ball joint, so that the area covered by foam dust removal is adjusted, and the adaptability is stronger.

Preferably, the nozzle line is composed of a first nozzle line and a second nozzle line.

After the preferred scheme is adopted, the nozzle pipeline can be installed from the two sides of the drill rod of the cantilever type tunneling machine, and the installation and the disassembly are convenient.

Preferably, the first nozzle line and the second nozzle line are arranged offset in the axial direction of the drill rod.

After adopting this preferred scheme, first nozzle pipeline and second nozzle pipeline can not interfere each other, further make things convenient for nozzle pipeline's installation and dismantlement.

Preferably, the foam generator is connected with a mixer through a pipeline, the water inlet pipeline and the foam stock solution conveying pipeline are respectively connected with the mixer, and a pipeline between the foam generator and the mixer is respectively connected with the water inlet pipeline and the foam stock solution conveying pipeline.

After the preferred scheme is adopted, the water and the foam stock solution which are adjusted in proportion can be mixed by the mixer, and the mixed solution is conveyed to the foam generator under the action of water pressure, so that the foaming effect is better; the water and the foam stock solution can also be directly conveyed to the foam generator without passing through a mixer; also can only carry water to foam generator, realize the water spray operation, can realize the operation of spraying water smoke even through changing the shower nozzle, it is various to spray the form, can increase dust collector's practicality.

Preferably, a needle valve, a pneumatic two-way piece, a gas flow meter and a second one-way valve are sequentially arranged in the compressed air pipeline along the medium flow direction.

The needle valve is used for adjusting compressed air's flow, and pneumatic two allies oneself with the piece and includes air cleaner and relief pressure valve, and the relief pressure valve can carry out the decompression to the air supply, makes the air supply be in the constant state, and the control gets into the gaseous pressure of foam generator, and then the control foaming effect, and the filter is used for the cleanness to the air supply, but moisture and the solid particle in the filterable compressed air avoid moisture and solid particle along with gaseous admission device. The gas flowmeter is used for displaying the size of the gas flow, and the second one-way valve is used for preventing the gas from flowing backwards.

Preferably, a first ball valve, a metering pump and a first one-way valve are sequentially arranged in the foam stock solution conveying pipeline along the medium flowing direction.

The first ball valve is used for controlling the opening and closing of the foam stock solution conveying pipeline; the metering pump is used for conveying the foam stock solution, is provided with an adjusting knob, adjusts the flow of the foam stock solution through the adjusting knob, and calculates the flow value of the current foam stock solution by observing the scale value displayed by the corresponding knob; the first one-way valve is used for preventing the foam stock solution from flowing backwards.

Preferably, the water inlet pipeline is provided with a second ball valve, a filter, a water pump, a gate valve, a water flow meter, a pressure gauge and a third one-way valve in sequence along the medium flowing direction.

The second ball valve is used for controlling opening and closing of the water inlet pipeline, the filter is used for filtering impurities in water to prevent blockage, the gate valve is used for adjusting output flow of the water pump, the water flowmeter is used for displaying real-time water flow, the pressure gauge is used for displaying real-time water pressure, and the third one-way valve is used for preventing liquid from flowing backwards.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. this foam dust pelletizing system does not have the dust removal water pipe, does not have the long tunnel of water source or dust removal water pressure and all can use in crossing the tunnel, when the lack of water in the water tank, only need to water to the water tank in can. The foam dust removal system can remove dust on the fully mechanized excavation face of the cantilever type excavator with various specifications, and foams act on dust in a good covering, wetting, adhering and other modes, so that the dust is prevented from being diffused fundamentally, and the dust concentration in the air is effectively reduced. The system is simple and reliable, the water consumption is small, the dust removal effect is good, and the system is particularly suitable for long tunnel construction lacking water sources.

2. For the areas outside the fully mechanized excavating surface of the cantilever type development machine, the handheld nozzles can be used for spraying foam for dust removal, so that the area covered by foam dust removal is improved, and the dust removal effect is improved.

3. The angle of the nozzle can be adjusted by rotating the adjustable ball joint, so that the area covered by foam dust removal is adjusted, and the adaptability is stronger.

4. The nozzle pipeline consists of two parts, can be installed from two sides of the drill rod of the cantilever type heading machine, and is convenient to install and disassemble.

5. The first nozzle pipeline and the second nozzle pipeline are arranged in a staggered mode in the axial direction of the drill rod, mutual interference cannot occur, and the nozzle pipelines are further convenient to install and detach.

6. The water and the foam stock solution which are adjusted in proportion can be mixed by a mixer, and the mixed solution is conveyed to a foam generator under the action of water pressure, so that the foaming effect is better; the water and the foam stock solution can also be directly conveyed to the foam generator without passing through a mixer; also can only carry water to foam generator, realize the water spray operation, can realize the operation of spraying water smoke even through changing the shower nozzle, it is various to spray the form, can increase dust collector's practicality.

7. In the compressed air pipeline, the needle valve is used for adjusting compressed air's flow, and pneumatic two allies oneself with the piece and includes air cleaner and relief pressure valve, and the relief pressure valve can carry out the steady voltage to the air supply, makes the air supply be in invariable state, and the control gets into the gaseous pressure of foam generator, and then the control foaming effect, and the filter is used for the cleanness to the air supply, can filter moisture and the solid particle in the compressed air, avoids moisture and solid particle along with gas admission device. The gas flowmeter is used for displaying the size of the gas flow, and the second one-way valve is used for preventing the gas from flowing backwards.

8. In the foam stock solution conveying pipeline, a first ball valve is used for controlling the opening and closing of the foam stock solution conveying pipeline; the metering pump is used for conveying the foam stock solution, is provided with an adjusting knob, adjusts the flow of the foam stock solution through the adjusting knob, and calculates the flow value of the current foam stock solution by observing the scale value displayed by the corresponding knob; the first one-way valve is used for preventing the foam stock solution from flowing backwards.

9. In the water inlet pipeline, the second ball valve is used for controlling opening and closing of the water inlet pipeline, the filter is used for filtering impurities in water and preventing blockage, the gate valve is used for adjusting output flow of the water pump, the water flowmeter is used for displaying real-time water flow, the pressure gauge is used for displaying real-time water pressure, and the third one-way valve is used for preventing liquid from flowing backwards.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic view of the installation of the nozzle line with the drill pipe;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural diagram of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

fig. 6 is a side view of the present invention.

Wherein, 1-foam raw liquid tank, 2-metering pump, 3-first ball valve, 4-first one-way valve, 5-mixer, 6-foam generator, 7-pressure gauge, 8-water flow meter, 9-gate valve, 10-water pump, 11-filter, 12-second ball valve, 13-water tank, 14-needle valve, 15-pneumatic two-way piece, 16-gas flow meter, 17-second one-way valve, 18-third ball valve, 19-third one-way valve, 20-fourth ball valve, 21-fifth ball valve, 22-sixth ball valve, 23-seventh ball valve, 24-eighth ball valve, 25-ninth ball valve, 26-compressed air inlet, 27-nozzle, 28-hand nozzle, 29-drill bit, 30-drill pipe, 31-first nozzle line, 32-second nozzle line, 33-bracket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present invention will be described in detail with reference to fig. 1 to 3.

A foam dust removal system for dust removal of a fully mechanized excavation surface of a cantilever type development machine comprises a water inlet pipeline, a compressed air pipeline and a foam stock solution conveying pipeline; one end of the water inlet pipeline is connected with the foam generator 6, and the other end of the water inlet pipeline is connected with the water tank 13; one end of the compressed air pipeline is provided with a compressed air inlet 26, and the other end of the compressed air pipeline is connected with the foam generator 6; one end of the foam stock solution conveying pipeline is connected with the foam generator 6, and the other end of the foam stock solution conveying pipeline is connected with the foam stock solution tank 1; the foam generator 6 is connected with a foam injection pipeline. As shown in fig. 4, the water tank 13, the foam concentrate tank 1 and the components in the pipeline are all mounted on a bracket 33, and the bracket 33 is mounted on a boom excavator or on the ground, and can be replenished when there is no water in the water tank 13 or when there is no foam concentrate in the foam concentrate tank 1. The dust removal operation can be carried out in a long tunnel without a dust removal water pipe or a water source or a tunnel with low dust removal water pressure.

The foam injection pipeline comprises a nozzle pipeline and a handheld foam injection pipeline. The nozzle pipeline is arranged along the drill rod 30 of the cantilever type tunneling machine in the annular direction, a plurality of nozzles 27 are uniformly arranged on the nozzle pipeline, and foams sprayed by the nozzles 27 uniformly cover a drill bit 29 of the cantilever type tunneling machine. The nozzle 27 is connected with the nozzle pipeline through an adjustable ball joint, so that the adjustment of the spraying angle is realized.

For ease of on-site fabrication and assembly, the nozzle line is made up of two parts, a first nozzle line 31 and a second nozzle line 32. The first nozzle line 31 and the second nozzle line 32 are shaped like a semicircle and are made of straight pipe sections and standard elbows.

For the convenience of assembly and disassembly, the first nozzle line 31 and the second nozzle line 32 are arranged at a certain distance in the axial direction of the drill rod 30. The first nozzle line 31 and the second nozzle line 32 are controlled to be opened and closed by the third ball valve 18 and the seventh ball valve 23, respectively.

One end of the handheld foam injection pipeline is provided with a handheld nozzle 28, and the opening and the closing of the pipeline are controlled through a sixth ball valve 23. According to the requirement, the manual foam spraying dust removal can be carried out on the part which can not be covered by the nozzle pipeline.

The foam generator 6 is connected with a mixer 5 through a pipeline. The water inlet line comprises two branches, one of which is directly communicated with the foam generator 6 and controls the opening and closing of the branch through the fourth ball valve 20, and the other branch is communicated with the mixer 5 and controls the opening and closing of the branch through the eighth ball valve 24. The foam stock solution conveying pipeline comprises two branches, wherein one branch is directly communicated with the foam generator 6 and controls the opening and closing of the branch through a fifth ball valve 21, and the other branch is communicated with the mixer 5 and controls the opening and closing of the branch through a ninth ball valve 25.

The pneumatic double-connection piece 15 comprises an air filter and a pressure reducing valve, the pressure reducing valve can stabilize the pressure of an air source, the air source is in a constant state, the pressure of the air entering a foam generator is controlled, the foaming effect is further controlled, the filter is used for cleaning the air source, the water and solid particles in the compressed air can be filtered, and the water and solid particles are prevented from entering the device along with the air. The gas flow meter 16 is used for displaying the gas flow, and the second one-way valve 17 is used for preventing the gas from flowing backwards.

And a first ball valve 3, a metering pump 2 and a first one-way valve 4 are sequentially arranged in the foam stock solution conveying pipeline along the medium flowing direction. The first ball valve 3 is used for controlling the opening and closing of the foam stock solution conveying pipeline; the metering pump 2 is used for conveying the foam stock solution, the metering pump 2 is provided with an adjusting knob, the flow of the foam stock solution is adjusted through the adjusting knob, and the flow value of the foam stock solution is calculated by observing the scale value displayed by the corresponding knob; the first check valve 4 is used for preventing the foam raw liquid from flowing backwards.

And a second ball valve 12, a filter 11, a water pump 10, a gate valve 9, a water flowmeter 8, a pressure gauge 7 and a third one-way valve 19 are sequentially arranged in the water inlet pipeline along the flowing direction of the medium. The second ball valve 12 is used for controlling opening and closing of a water inlet pipeline, the filter 11 is used for filtering impurities in water and preventing blockage, the gate valve 9 is used for adjusting output flow of the water pump, the water flowmeter 8 is used for displaying real-time water flow, the pressure gauge 7 is used for displaying real-time water pressure, and the third one-way valve 19 is used for preventing liquid from flowing backwards.

The electric system of the device adopts an external AC380V power supply as a power supply, and provides a power supply of AC380V and a control power supply of DC24V for the device after being distributed by a power distribution system.

The water pump 10 is provided with a water pump controller which has two working modes of automatic operation and manual operation, integrates the functions of over-current, under-current and timing time setting, has the protection of over-voltage, under-voltage, open-phase, short circuit, overload and no-load, can display the fault state on a display screen, and has the function of alarming.

The internal control core of the water pump controller is a single chip microcomputer, each phase uses a voltage and current transformer to rectify and filter analog quantity output by a secondary winding, an operational amplifier is used for detecting, and signals are connected into the single chip microcomputer after being isolated by an optical coupler to carry out operational control. Overvoltage protection and open-phase protection are realized by detecting voltage, and short-circuit protection, overload protection and no-load protection are realized by detecting current.

The motor of the metering pump 2 is 40W, and an AC380 type is selected. A single chip microcomputer (CPU) in the pump controller simultaneously sends out a starting operation signal, and the operation signal drives the water pump 10 and the metering pump 2 to operate after passing through the driving amplification circuit. The metering pump 2 and the water pump 10 are started, stopped and protected simultaneously.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims

1. The utility model provides a foam dust pelletizing system that is used for cantilever type entry driving machine to combine digger face to remove dust which characterized in that: comprises a water inlet pipeline, a compressed air pipeline and a foam stock solution conveying pipeline; one end of the water inlet pipeline is connected with a foam generator (6), and the other end of the water inlet pipeline is connected with a water tank (13); one end of the compressed air pipeline is provided with a compressed air inlet (26), and the other end of the compressed air pipeline is connected with the foam generator (6); one end of the foam stock solution conveying pipeline is connected with the foam generator (6), and the other end of the foam stock solution conveying pipeline is connected with the foam stock solution box (1); the foam generator (6) is connected with a foam injection pipeline.

2. The foam dedusting system for the fully mechanized heading face of a boom-type roadheader as recited in claim 1, wherein the foam injection pipeline comprises a handheld foam injection pipeline, and one end of the handheld foam injection pipeline is provided with a handheld nozzle (28).

3. A foam dust removal system for removing dust from the fully mechanized excavation face of a boom-type roadheader as claimed in claim 1, wherein the foam injection line comprises a nozzle line, the nozzle line is arranged circumferentially along a drill rod (30) of the boom-type roadheader, a plurality of nozzles (27) are uniformly arranged on the nozzle line, and the nozzles (27) and the nozzle line are connected by adjustable ball joints.

4. A foam dust removal system for the dust removal of the fully mechanized excavation face of a boom-type roadheader as claimed in claim 3, wherein the nozzle line is composed of a first nozzle line (31) and a second nozzle line (32).

5. A foam dedusting system for a fully mechanized heading face of a boom miner as recited in claim 4, characterized in that the first nozzle line (31) and the second nozzle line (32) are arranged in a staggered manner in an axial direction of the drill rod.

6. The foam dedusting system for the fully mechanized excavation face of the cantilever type tunneling machine according to claim 1, wherein the foam generator (6) is connected with the mixer (5) through a pipeline, the water inlet pipeline and the foam stoste conveying pipeline are respectively connected with the mixer (5), and a pipeline between the foam generator (6) and the mixer (5) is respectively connected with the water inlet pipeline and the foam stoste conveying pipeline.

7. A foam dust removal system for removing dust from the fully mechanized excavation face of a boom-type roadheader as claimed in claim 1, wherein a needle valve (14), a pneumatic coupler (15), a gas flow meter (16) and a second check valve (17) are arranged in the compressed air line in the order of the medium flow direction.

8. The foam dedusting system for the fully mechanized excavation face of the cantilever type tunneling machine according to claim 1, characterized in that a first ball valve (3), a metering pump (2) and a first one-way valve (4) are sequentially arranged in the foam stoste conveying pipeline along the medium flowing direction.

9. The foam dedusting system for the fully mechanized heading face of the cantilever type excavator according to claim 1, wherein a second ball valve (12), a filter (11), a water pump (10), a gate valve (9), a water flow meter (8), a pressure gauge (7) and a third one-way valve (19) are sequentially arranged in the water inlet pipeline along the medium flow direction.