CN113374520A - Guniting comprehensive control dust removal system and automatic regulation and control mode thereof - Google Patents
Guniting comprehensive control dust removal system and automatic regulation and control mode thereof Download PDFInfo
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- CN113374520A CN113374520A CN202110843771.7A CN202110843771A CN113374520A CN 113374520 A CN113374520 A CN 113374520A CN 202110843771 A CN202110843771 A CN 202110843771A CN 113374520 A CN113374520 A CN 113374520A
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- 239000000428 dust Substances 0.000 title claims abstract description 252
- 238000012544 monitoring process Methods 0.000 claims abstract description 85
- 238000005507 spraying Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 10
- 239000003595 mist Substances 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 3
- 238000005453 pelletization Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 18
- 239000002002 slurry Substances 0.000 description 6
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Prevention Of Fouling (AREA)
Abstract
The invention belongs to the field of roadway dust control and removal, and relates to a comprehensive guniting dust control and removal system and an automatic regulation and control mode thereof, wherein the comprehensive guniting dust control and removal system comprises a control and removal equipment all-in-one machine, a monitoring element and an electric control system, wherein the monitoring element, the control and removal equipment all-in-one machine are respectively communicated with the electric control system; the dust control and removal equipment all-in-one machine comprises a dust removal device, a dust control device connected with the dust removal device and a spraying device arranged on the dust removal device; the dust concentration monitoring, the multipoint wind speed monitoring and the humidity monitoring of the guniting section are comprehensively brought into the comprehensive control and dedusting regulation and control system, the parameters can be subjected to feedback adjustment for many times according to the section working condition and the use condition, the full automation of the dedusting control and control is realized, the dilemma that the guniting robot cannot be used for a long time due to the high-dust and high-humidity environment of the guniting working face is solved, the working performance of the dedusting control and automatic regulation and control is greatly optimized, the manpower and material resources are saved, the working environment of workers is improved, and the automatic guniting operation of mines and tunnels is guaranteed.
Description
Technical Field
The invention belongs to the field of roadway dust control and removal, and relates to a comprehensive guniting dust control and removal system and an automatic regulation and control mode thereof.
Background
The method comprises the steps that a tunnel is excavated during road repair, an underground excavation roadway is supported by anchor rods, the anchor rods are required to be ejected and anchored around a rock wall, materials such as cement, sand and stones are used for ejecting, slurry of mixed materials is pressurized through an anchor-ejecting machine, the slurry flows through a slurry-ejecting head and is ejected onto the rock wall at a high speed, part of slurry is attached to the rock wall, part of slurry falls off, and part of slurry is diffused into the air after being ejected, so that cement dust is formed, and the damage to a human body is great. At present, spray guns are mostly manually held by hands for operation, the protection requirement is high, the labor efficiency is low, the robot operation is also utilized along with the development of an automation technology, but on-site dust flies, the visibility is very low, stones and sand particles rebound back at high speed to hit a sensing element, the humidity is high, the damage is easily caused, and the mechanical automation is hindered. Therefore, no matter manual or mechanical automation field operation, the dust removing device must be matched with the dust removing device, dust removal is carried out by matching with air curtain dust control, and the comprehensive dust removing effect can be achieved, the dust control and removal device needs to be closely matched and adjusted, and the dust control and removal device is started and stopped simply by manpower, and the operation of the device is adjusted, so that the requirement for comprehensively adjusting the dust control and removal device according to working conditions (the dust control and removal effect cannot reach the best) can be met, workers are exposed in cement dust, the health of the workers is greatly threatened, the sensor is influenced by the severe environment of a working face at present, and the sensor is damaged by multiple impacts of dust, humidity and particles, and is rapidly out of order to cause that a guniting robot (hand) and the like cannot be suitable.
Disclosure of Invention
In view of the above, the present invention provides a comprehensive dust control and control system for guniting and an automatic control method thereof, which performs multiple parameter feedback adjustments according to the section working condition and the use condition, so as to realize complete automation of dust control and control.
In order to achieve the purpose, the invention provides the following technical scheme: a guniting comprehensive dust control and removal system comprises a control and removal equipment all-in-one machine, a monitoring element and an electric control system, wherein the monitoring element, the control and removal equipment all-in-one machine are respectively communicated with the electric control system;
the dust control and removal device all-in-one machine comprises a dust removal device, a dust control device connected with the dust removal device and a spraying device arranged on the dust removal device.
Optionally, the monitoring element includes a wind speed monitoring sensor, a dust concentration monitoring sensor and a humidity monitoring sensor;
the wind speed monitoring sensor, the dust concentration monitoring sensor and the humidity monitoring sensor are respectively communicated with the electric control system.
Optionally, the number of the wind speed monitoring sensors is more than 1 in a guniting rebound area where the section wind flow is relatively weak and the guniting port is later.
Optionally, the dust concentration monitoring sensor is arranged at a position far away from the dust extraction port and behind the guniting head, and is used for monitoring dust concentration at a dust extraction weak point and a breathing area of an operator.
Optionally, the humidity monitoring sensor is arranged at a position far away from the air inlet and above the front of the air suction opening and with high humidity, and is used for monitoring the humidity in the cross section polluted air flow air.
Optionally, the dust removing device comprises a filter screen, a corrugated plate structure and a dust pumping device, the dust pumping device comprises a wind pressure impeller and a wind volume impeller which are installed oppositely, and the dust removing device is also connected with a circulating water pool;
the spraying devices are respectively arranged at the front end and the rear end of the dust removal device, and the dust control device is communicated with the dust removal device and is provided with a vortex fan.
Optionally, the electric control system includes a dust control and control host, and a dust control air pressure frequency modulation motor, a dust control air direction electric valve, a dust control air volume frequency modulation motor, a dust control air pressure frequency modulation motor, and a spray frequency modulation motor, which are respectively communicated with the dust control and control host.
The automatic regulation and control mode for the comprehensive dust control and removal of the guniting is applied to the comprehensive dust control and removal system of the guniting, and comprises the following steps of:
s1, arranging 5 wind speed monitoring sensors in a guniting rebound area with relatively weak section wind flow and a guniting port later to monitor wind speeds of 5 points respectively; a dust concentration monitoring sensor is arranged at a position which is relatively far away from the dust extraction port and is 1.5m away from the ground and behind the guniting head; arranging humidity monitoring sensors at the upper part of the front of the air suction opening and the position with higher humidity, which is more than 2.2m away from the air inlet;
s2, after guniting is started, the dust removing device sucks dust, the sucked dust is collided and intercepted by fog drops firstly, the dust removing device intercepts the dust and water mist for multiple times through a filter screen, dehydrates and separates the dust and the water mist through a corrugated plate and discharges the dust and the water mist into a water pool for circulation, the dehydrated, dedusted and purified air enters the dust control device again and is influenced by a vortex fan, and the flowing direction of air flow is changed to generate wall-attached cyclone air to generate an air curtain in the section of the roadway;
and S3, transmitting data monitored by the wind speed monitoring sensor, the dust concentration monitoring sensor and the humidity monitoring sensor to a dust control and control host, and controlling the dust control and control host according to feedback data to control the dust control air volume frequency modulation motor, the dust control air direction electric valve, the dust control air volume frequency modulation motor, the dust control air pressure frequency modulation motor and the spray frequency modulation motor respectively, so as to realize full automation of dust control and control.
Optionally, after the wind speed returned by the point positions of the 5 wind speed monitoring sensors is compared with the wind speed of the dust-containing return wind flow, the dust control and control host regulates and controls the dust control wind quantity frequency modulation motor, the integral dust control wind speed is regulated, and the dust control wind speed is required to be greater than the return wind speed; and further comparing the wind speeds of the five wind speed monitoring sensor point positions, and adjusting the dust control wind direction electric valve by the time control dust control regulation and control host machine with larger wind speed difference to ensure that the wind speeds of all monitoring points are basically equal, or the wind speeds of the point positions with high local dirty wind concentration and large rebound are higher.
Optionally, the air volume, the air pressure and the spray fine adjustment direction are adjusted downwards from the maximum performance value according to each monitoring result, the adjustment is only carried out for 5% each time, the adjustment is kept for 10min, and the adjustment is carried out according to the trend after the feedback of the stable value is carried out.
The invention has the beneficial effects that: the invention relates to a guniting comprehensive control dust removal system and an automatic regulation and control mode thereof.A mode of monitoring multipoint wind speed is adopted, and the wind supply size and wind direction regulation of a wind curtain generated by a dust control system are controlled through comparison and calculation, so that dust is prevented from overflowing and rebounding; the dust concentration is monitored and feedback calculation is carried out for multiple times to comprehensively regulate and control the dust removal air quantity and the dust extraction air pressure, so that the optimal dust removal effect is achieved; the mode of monitoring humidity is adopted to regulate and control the water quantity and the pressure of the spraying system through a comparison method, the optimal spraying effect is achieved by combining multiple fine adjustment of the dust fall effect, and wet type spraying dust removal is carried out on the basis of normal work of an electronic sensing device of an automatic guniting working surface.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the monitoring points and the layout of the device of the integrated slurry spraying dust control system according to the present invention;
FIG. 2 is a schematic view of a control system of the integrated dust control system for guniting.
Reference numerals: the device comprises a wind speed monitoring sensor 1, a dust concentration monitoring sensor 2, a humidity monitoring sensor 3, a dust removal device 4, a dust control device 5, a dust control regulation and control host 6, a spraying device 7, a dust control air volume frequency modulation motor 8, a dust control air direction electric valve 9, a dust control air pressure frequency modulation motor 10, a dust control air volume frequency modulation motor 11, a spraying frequency modulation motor 12 and an air supply system 13.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, a tunnel air supply system 13 is provided at the left side, a guniting head is arranged in the middle, and a control and dust removal device integrated machine is arranged at the right side close to the tunnel wall, and the tunnel air supply system is a guniting comprehensive control and dust removal system and comprises a control and dust removal device integrated machine, a monitoring element and an electric control system, wherein the monitoring element and the control and dust removal device integrated machine are respectively communicated with the electric control system; the dust control and removal device all-in-one machine comprises a dust removal device 4, a dust control device 5 connected with the dust removal device 4 and a spraying device 7 arranged on the dust removal device 4. The monitoring elements comprise a wind speed monitoring sensor 1, a dust concentration monitoring sensor 2 and a humidity monitoring sensor 3; the wind speed monitoring sensor 1, the dust concentration monitoring sensor 2 and the humidity monitoring sensor 3 are respectively communicated with an electric control system. The wind speed monitoring sensor 1 is provided with 5 in the area of the later guniting rebound of the guniting port, where the section wind current is relatively weak. The dust concentration monitoring sensor 2 is arranged at a position far away from the dust extraction port and behind the guniting head and is used for monitoring dust concentration at a dust extraction weak point and a breathing area of an operator. The humidity monitoring sensor 3 is arranged at a position far away from the air inlet, the upper part in front of the air suction opening and high in humidity and used for monitoring the humidity in the cross section polluted air flow air. The dust removing device 4 comprises a filter screen, a corrugated plate structure and a dust extracting device, the dust extracting device comprises a wind pressure impeller and a wind volume impeller which are oppositely and rotatably arranged, and the dust removing device 4 is also connected with a circulating water pool; the spraying devices 7 are respectively arranged at the front end and the rear end of the dust removing device 4, and the dust control device is communicated with the dust removing device 4 and is provided with a vortex fan. The electric control system comprises a dust control and control host 6, and a dust control air volume frequency modulation motor 8, a dust control air direction electric valve 9, a dust control air volume frequency modulation motor 11, a dust control air pressure frequency modulation motor 10 and a spraying frequency modulation motor 12 which are respectively communicated with the dust control and control host 6.
The automatic regulation and control mode for the comprehensive dust control and removal of the guniting is applied to the comprehensive dust control and removal system of the guniting, and comprises the following steps of:
s1, 5 wind speed monitoring sensors 1 are arranged in a guniting rebound area with relatively weak section wind current and a guniting port later to monitor wind speeds of 5 points respectively; a dust concentration monitoring sensor 2 is arranged at a position which is relatively far away from the dust extraction port and is 1.5m away from the ground and behind the guniting head; a humidity monitoring sensor 3 is arranged at the upper part of the front of the air suction opening, which is more than 2.2m away from the air inlet and has larger humidity;
s2, the dust control device 5 mainly generates an air curtain effect to block rebounded and splashed dust, a dust suction port of the dust removal device 4 sucks the trapped dust in the air curtain, the dust removal adopts a wet filtering dust removal technology, the sucked dust is firstly intercepted by fog drops, a filter screen and a corrugated plate mechanism are arranged behind the dust remover to filter, separate and arrange the dust and water mist into a water pool, the air after dehydration, dust removal and purification enters the dust control device again and is influenced by a vortex fan, and the flowing direction of the air flow changes to generate wall-attached cyclone air to generate the air curtain in the section of the roadway;
and S3, the data monitored by the wind speed monitoring sensor 1, the dust concentration monitoring sensor 2 and the humidity monitoring sensor 3 are transmitted to the dust control and regulation host 6, and the dust control and regulation host 6 respectively controls the dust control air volume frequency modulation motor 8, the dust control air direction electric valve 9, the dust control air volume frequency modulation motor 11, the dust control air pressure frequency modulation motor 10 and the spray frequency modulation motor 12 according to the feedback data, so that the full automation of dust control and regulation is realized.
Several factors of air curtain interception effect, dust extraction, dust removal effect, spraying effect influence the ring and detain each other, and the good dust escape of interception influences the suction effect, and dust removal, dehydration effect are not good after the suction advances the dust remover, influence exhaust air's purification degree and aridity, and further vortex exhaust air curtain contains dirt and the water content receives the influence again. Therefore, the optimal effect can be achieved only by comprehensively regulating and controlling the optimized proportion. The dust control air curtain mainly aims at preventing dust from rebounding and overflowing to the rear of the dust extraction opening, therefore, the dust control air speed must exceed the rebounding and overflowing speed, in addition, the guniting head repeatedly moves along the section and forwards pushes, therefore, the air speed of each point position of the air curtain is different and cannot be unchanged, particularly, the air speed near the guniting opening and the air supply opening is higher than that of other point positions. And comparing the wind speed returned by the 5 point positions with the wind speed of the dust-containing return air flow, and then regulating and controlling the dust control wind quantity frequency modulation motor 8 by the dust control and dust control regulation host 6 to regulate and control the overall dust control wind speed, wherein the dust control wind speed is required to be greater than the return air flow speed. Further, the wind speeds of the five point locations are compared, and when the wind speed difference is large, the control system automatically adjusts the dust control wind direction electric valve 9, so that the wind speeds of all monitoring points are basically equal, or the wind speeds of the point locations with high local dirty wind concentration and large rebound are slightly higher.
The dust removing device 4 mainly sucks dust in front of the air curtain into the dust removing equipment, and discharges the dust sucked into the dirty air after dust removal and dehydration. The dust removal wind pressure mainly influences the suction capacity, the dust removal wind quantity mainly relates to the dust removal and dehydration effects, the spray size influences the fog particle size, the collision interception effect on dust and the humidity of rear exhaust, and the spray effect is also influenced by the wind pressure. Wind pressure impeller and amount of wind impeller are the disrotatory installation in dust collector 4, the performance is mutual influence, wind pressure and amount of wind are not the big better, need find an optimal ratio, according to the dust concentration signal that passes back, it is up to standard whether to synthesize the work flour dust concentration of regulation and control host computer judgement after removing the dust fall, air quantity and wind pressure need heightening not up to standard, regulation and control host computer is according to the air feed amount of wind (user provides) fine setting dust removal amount of wind and dust removal wind pressure make the suction amount of wind under the prerequisite of ratio requirement within range after up to standard, maintain suction amount of wind and pressure on the higher level state of operating performance curve as far as possible. The general spraying pressure of spraying in dust collector 4 increases the fog grain and refines more, the water yield is bigger, the dust removal effect is good, but not directly proportional, and be restricted by the dehydration effect, direct influence working face humidity, avoid too big working face humidity to lead to electronic sensing device malfunctioning or life-span to reduce, especially arrange humidity monitoring point in the foul wind survey, comprehensive regulation and control host computer carries out the comparison according to humidity value and mining electronic equipment normal operating humidity allowable value, through controlling spraying frequency modulation motor 12 to control the water yield and the pressure of spraying, thereby adjust the humidity of working face, if humidity exceeds standard in the foul wind stream, control system will reduce spraying pressure and water yield, and combine the feedback value of dust concentration sensor to carry out many times fine setting and make its working property reach the optimum.
In this embodiment, the air volume, the air pressure, and the fine adjustment direction of the spray are generally adjusted downward from the maximum performance value according to the monitoring results, each time, the adjustment is performed by only 5%, the adjustment is maintained for about 10min, and the adjustment is performed according to the trend after the feedback of the stable values.
The invention comprehensively brings dust concentration monitoring, multipoint wind speed monitoring and humidity monitoring of the guniting section into a comprehensive control and dedusting regulation and control system, can carry out parameter feedback adjustment for many times according to section working conditions and use conditions, realizes full automation of dedusting control and control, solves the dilemma that the guniting robot cannot be used for a long time due to high-dust and high-humidity environment of the guniting working face, greatly optimizes the working performance of dedusting control and control, saves manpower and material resources, improves the working environment of workers, and ensures automatic guniting operation of mines and tunnels.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a whitewashing is synthesized and is controlled dust pelletizing system which characterized in that: the device comprises a control and dust removal device all-in-one machine, a monitoring element and an electric control system, wherein the monitoring element and the control and dust removal device all-in-one machine are respectively communicated with the electric control system;
the dust control and removal device all-in-one machine comprises a dust removal device, a dust control device connected with the dust removal device and a spraying device arranged on the dust removal device.
2. The comprehensive guniting dust control and removal system according to claim 1, wherein: the monitoring element comprises a wind speed monitoring sensor, a dust concentration monitoring sensor and a humidity monitoring sensor;
the wind speed monitoring sensor, the dust concentration monitoring sensor and the humidity monitoring sensor are respectively communicated with the electric control system.
3. The comprehensive guniting dust control and removal system according to claim 2, wherein: the wind speed monitoring sensors are arranged in more than 1 guniting rebound area with relatively weak section wind flow and a later guniting opening.
4. The comprehensive guniting dust control and removal system according to claim 2, wherein: the dust concentration monitoring sensor is arranged at a position far away from the dust extraction port and behind the guniting head and used for monitoring dust concentration at a dust extraction weak point and a breathing area of an operator.
5. The comprehensive guniting dust control and removal system according to claim 2, wherein: the humidity monitoring sensor is arranged at a position far away from the air inlet, above the front of the air suction opening and with high humidity and used for monitoring the humidity in the cross section polluted air flow.
6. The comprehensive guniting dust control and removal system according to claim 1, wherein: the dust removal device comprises a filter screen, a corrugated plate structure and a dust extraction device, the dust extraction device comprises a wind pressure impeller and a wind volume impeller which are arranged oppositely, and the dust removal device is also connected with a circulating water pool;
the spraying devices are respectively arranged at the front end and the rear end of the dust removal device, and the dust control device is communicated with the dust removal device and is provided with a vortex fan.
7. The comprehensive guniting dust control and removal system according to claim 1, wherein: the electric control system comprises a dust control and regulation host, and a dust control air flow frequency modulation motor, a dust control air direction electric valve, a dust control air flow frequency modulation motor, a dust control air pressure frequency modulation motor and a spraying frequency modulation motor which are respectively communicated with the dust control and regulation host.
8. An automatic regulation and control mode for comprehensive dust control and dust removal of guniting, which is applied to the comprehensive dust control and dust removal system of guniting according to any one of claims 1 to 7, and is characterized by comprising the following steps:
s1, arranging 5 wind speed monitoring sensors in a guniting rebound area with relatively weak section wind flow and a guniting port later to monitor wind speeds of 5 points respectively; a dust concentration monitoring sensor is arranged at a position which is relatively far away from the dust extraction port and is 1.5m away from the ground and behind the guniting head; arranging humidity monitoring sensors at the upper part of the front of the air suction opening and the position with higher humidity, which is more than 2.2m away from the air inlet;
s2, after guniting is started, the dust removing device sucks dust, the sucked dust is collided and intercepted by fog drops firstly, the dust removing device intercepts the dust and water mist for multiple times through a filter screen, dehydrates and separates the dust and the water mist through a corrugated plate and discharges the dust and the water mist into a water pool for circulation, the dehydrated, dedusted and purified air enters the dust control device again and is influenced by a vortex fan, and the flowing direction of air flow is changed to generate wall-attached cyclone air to generate an air curtain in the section of the roadway;
and S3, transmitting data monitored by the wind speed monitoring sensor, the dust concentration monitoring sensor and the humidity monitoring sensor to a dust control and control host, and controlling the dust control and control host according to feedback data to control the dust control air volume frequency modulation motor, the dust control air direction electric valve, the dust control air volume frequency modulation motor, the dust control air pressure frequency modulation motor and the spray frequency modulation motor respectively, so as to realize full automation of dust control and control.
9. The automatic regulation and control mode of comprehensive dust control and removal of guniting according to claim 8, characterized in that: after the wind speed returned by the point positions of the 5 wind speed monitoring sensors is compared with the wind speed of the dust-containing return air flow, the dust control and control host regulates and controls the dust control wind quantity frequency modulation motor, the integral dust control wind speed is regulated, and the dust control wind speed is required to be greater than the return air flow speed; and further comparing the wind speeds of the five wind speed monitoring sensor point positions, and adjusting the dust control wind direction electric valve by the time control dust control regulation and control host machine with larger wind speed difference to ensure that the wind speeds of all monitoring points are basically equal, or the wind speeds of the point positions with high local dirty wind concentration and large rebound are higher.
10. The automatic regulation and control mode of comprehensive dust control and removal of guniting according to claim 8, characterized in that: the air volume, the air pressure and the spray fine adjustment direction are adjusted downwards from the maximum performance value according to each monitoring result, the adjustment is only carried out by 5 percent each time, the adjustment is kept for 10min, and the adjustment is carried out according to the trend after the feedback of the stable values is carried out.
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| CN202110843771.7A CN113374520A (en) | 2021-07-26 | 2021-07-26 | Guniting comprehensive control dust removal system and automatic regulation and control mode thereof |
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| CN202110843771.7A CN113374520A (en) | 2021-07-26 | 2021-07-26 | Guniting comprehensive control dust removal system and automatic regulation and control mode thereof |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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