Anti-freezing and anti-sticking dust removal method for long-distance belt conveyor

Abstract

The invention relates to an anti-freezing and anti-sticking dust removal method for a long-distance belt conveyor. The anti-freezing and anti-sticking dust removal method for the long-distance belt conveyor comprises the following steps that an anti-freezing solution preparation room is built; a negative pressure induction dust removal fan system is arranged at each of a transfer point at the tail of the belt conveyor and a head of the belt conveyor; anti-freezing and anti-sticking spraying systems are arranged on the outer side and the inner side of a belt of the belt conveyor; the multi-stage cleaning device is installed on the outer side of the belt of the belt conveyor, the multi-stage cleaning device is used in cooperation to clean frozen sticky materials and hardened materials which are softened after treatment, frozen and bonded impurities on the surface of the belt are removed, and cleanliness of the surface of the belt is guaranteed. According to the belt cleaning device, freezing sticky materials and hardened materials on the belt are softened by spraying an anti-freezing solution, then the treated freezing sticky materials and hardened materials are cleaned through cooperative use of the multiple stages of cleaning devices, frozen and bonded impurities on the surface of the belt are removed, and cleanliness of the surface of the belt is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of belt conveyors, and in particular to a method for preventing freezing and removing dust from long-distance belt conveyors. Background Art

[0002] The coal transshipment process requires the use of long-distance belt conveyors for transportation. When long-distance belt conveyors are used in open-pit mines in cold areas, the temperature on the conveyor belt is too low, which will absorb a large amount of coal ash. During the long-term transportation process, it is compressed to form compacted objects. In addition, the lower temperature will freeze the impurities on the surface of the conveyor belt, forming frozen objects adhering to the surface of the conveyor belt. Ice on the inside of the conveyor belt will cause the belt to deviate and slip, greatly affecting the stable operation of the device. Generally, manual labor is used to remove the compacted objects and frozen objects on the conveyor belt. This removal method is labor-intensive, time-consuming and labor-intensive, and there are great safety hazards. In addition, the coal ash generated during coal transportation makes the working environment harsh and affects the health of the staff.

[0003] Traditional dust removal technology has low efficiency in purifying respirable dust, and generally adopts external exhaust treatment. In winter, external exhaust causes heat loss in the workshop, which cannot meet the insulation requirements and the dust removal system cannot be opened normally. Commonly used dust collectors, cleaning machines and other purification equipment are not efficient in purifying respirable dust, causing the existing dust collectors to still discharge a large amount of respirable dust inward. The pulse dust collector has a large pressure difference during operation, the service life of the filter bag is short, dust is easily accumulated on the windshield of the air inlet of each air chamber, and the failure rate of electrical components is high. These phenomena seriously affect the compliance of the system gas emission and increase the operation and maintenance costs of the system. Summary of the invention

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides a method for anti-freezing and dust removal of a long-distance belt conveyor, which can ensure stable operation of the device, reduce cleaning workload, and be safe and environmentally friendly.

[0005] The present application provides a long-distance belt conveyor anti-freezing and dust removal method, comprising the following steps:

[0006] Construction of an antifreeze preparation room;

[0007] A negative pressure induced dust removal fan system 2 is installed at the transfer point at the tail of the belt conveyor and at the head of the belt conveyor for primary antifreeze and dust removal, and antifreeze is supplied through the antifreeze preparation room;

[0008] An antifreeze spray system 1 is arranged on the outside and inside of the belt conveyor belt to perform secondary antifreeze dust removal. Antifreeze is supplied through the antifreeze preparation room, and the softening treatment of frozen and hardened materials on the belt is achieved by spraying the antifreeze;

[0009] A multi-stage cleaning device is installed on the outside of the belt conveyor belt. The multi-stage cleaning device is used in conjunction with the softened frozen and adhered materials to clean the frozen and adhered impurities on the belt surface to ensure the cleanliness of the belt surface.

[0010] Optionally, in some schemes, the antifreeze preparation room is provided with water source, antifreeze source, and gas source interfaces to provide water source and antifreeze source for the crushing station, and an antifreeze proportioning station, antifreeze storage room, and control room are provided in the station.

[0011] Optionally, in some schemes, the antifreeze ratio is adjusted according to the current temperature. When the temperature is -15°C, the antifreeze specific gravity is 1.13, when the temperature is -20°C, the antifreeze specific gravity is 1.17, when the temperature is -25°C, the antifreeze specific gravity is 1.2, when the temperature is -30°C, the antifreeze specific gravity is 1.22, when the temperature is -35°C, the antifreeze specific gravity is 1.24, when the temperature is -40°C, the antifreeze specific gravity is 1.26, when the temperature is -45°C, the antifreeze specific gravity is 1.27, when the temperature is -50°C, the antifreeze specific gravity is 1.28, and when the temperature is -55°C, the antifreeze specific gravity is 1.3.

[0012] Optionally, in some schemes, the antifreeze sticky spray system 1 adopts an intermittent spray system and is interlocked with the start and stop signals of the belt conveyor to achieve automatic start and stop.

[0013] Optionally, in some schemes, the negative pressure induced dust removal fan system 2 includes a wet dust removal fan 21 and an anti-corrosion water tank 22. The two ends of the wet dust removal fan 21 are respectively a dusty air inlet 23 and a clean air outlet 24. The liquid inlet of the wet dust removal fan 21 is connected to the anti-corrosion water tank 22 through a fan antifreeze supply pipeline 25, and the liquid outlet of the wet dust removal fan 21 is connected to the anti-corrosion water tank 22 through an antifreeze recovery pipeline 26.

[0014] Optionally, in some schemes, the anti-corrosion water tank 22 is divided into an antifreeze liquid sedimentation tank 221 and an antifreeze liquid purification tank 222, and the antifreeze liquid sedimentation tank 221 and the antifreeze liquid purification tank 222 are separated by a partition plate, and an overflow port is provided on the partition plate. The liquid inlet of the wet dust removal fan 21 is connected to the antifreeze liquid sedimentation tank 221 through the fan antifreeze liquid supply pipeline 25, and the liquid outlet of the wet dust removal fan 21 is connected to the antifreeze liquid purification tank 222 through the antifreeze liquid recovery pipeline 26.

[0015] Optionally, in some solutions, an antifreeze pump 27 and a filter 28 are installed on the fan antifreeze supply pipeline 25, a drain pipe is provided at the bottom of the antifreeze sedimentation tank 221, and a drain valve 29 is provided on the drain pipe.

[0016] Optionally, in some embodiments, the wet dust removal fan 21 includes a mine local ventilator 211, a spray system 212, a base 213 and a wet vibrating wire dust collector 214. The mine local ventilator 211 is installed on the base 213, the spray system 212 is installed on the mine local ventilator 211, the front end of the mine local ventilator 211 is provided with a wet vibrating wire dust collector 214, the fan antifreeze supply pipeline 25 is connected to the spray system 212, and the spray system 2 12 adopts a negative pressure induction nozzle, which includes an air duct 2121, an antifreeze liquid inlet pipe 2122, a negative pressure nozzle 2123, and a nozzle mounting bracket 2124. The air duct 2121 and the antifreeze liquid inlet pipe 2122 are connected to the negative pressure nozzle 2123, the fan antifreeze liquid supply pipeline 25 is connected to the antifreeze liquid inlet pipe 2122, the air duct 2121 is connected to the fan, and the negative pressure nozzle 2123 is installed on the mining local ventilation fan 211 through the nozzle mounting bracket 2124.

[0017] Optionally, in some solutions, a dust suppression curtain 3 is provided at the outlet of the sealed material guide chute at the rear of the belt conveyor, and a spray nozzle 4 is installed.

[0018] Optionally, in some schemes, the cleaning device includes a head roller cleaner 5, a spiral cleaner 6, and a brush cleaner 7. The head roller cleaner 5 is installed at the head of the belt conveyor, and its cleaning end is in contact with the outer belt of the head roller of the belt conveyor. The spiral cleaner 6 and the brush cleaner 7 are installed on the lower side of the belt conveyor, and their cleaning ends are in contact with the bottom belt of the belt conveyor.

[0019] The technical solution provided by this application may have the following beneficial effects:

[0020] The present application achieves softening treatment of frozen adhesion and compacted materials on the belt by spraying antifreeze liquid, and then uses a multi-stage cleaning device to clean the treated frozen adhesion and compacted materials, removes frozen and adhered impurities on the belt surface, and ensures the cleanliness of the belt surface. In addition, spraying antifreeze liquid can prevent the belt from freezing and avoid slipping due to freezing. The negative pressure induced dust removal fan system is used to treat free dust generated by coal transshipment, ensuring stable operation of the device, reducing cleaning workload, and ensuring safety and environmental protection.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0023] Figure 1 It is a structural schematic diagram of a device used in a long-distance belt conveyor antifreeze and dust removal method shown in an embodiment of the present application;

[0024] Figure 2 It is a structural schematic diagram of a negative pressure induced dust removal fan system shown in an embodiment of the present application;

[0025] Figure 3 It is a structural schematic diagram of a wet dust removal fan shown in an embodiment of the present application;

[0026] Figure 4 It is a schematic diagram of the structure of the negative pressure induction nozzle shown in the embodiment of the present application.

[0027] Reference numerals:

[0028] 1- Antifreeze sticky spray system, 2- Negative pressure induced dust removal fan system, 3- Dust suppression curtain, 4- Spray nozzle, 5- Head roller cleaner, 6- Spiral cleaner, 7- Brush cleaner;

[0029] 21-wet dust removal fan, 22-anticorrosive water tank, 23-dust air inlet, 24-clean air outlet, 25-fan antifreeze supply pipeline, 26-antifreeze recovery pipeline, 27-antifreeze pump, 28-filter, 29-drain valve;

[0030] 211-local ventilator for mining, 212-spray system, 213-machine base, 214-wet vibrating wire dust collector;

[0031] 221-antifreeze sedimentation tank, 222-antifreeze purification tank;

[0032] 2121-air duct, 2122-antifreeze liquid inlet pipe, 2123-negative pressure nozzle, 2124-nozzle mounting bracket. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0034] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In response to the above problems, an embodiment of the present application provides a method for anti-freezing and dust removal of a long-distance belt conveyor, which can ensure stable operation of the device, reduce cleaning workload, and be safe and environmentally friendly.

[0038] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0039] See also Figure 1 The long-distance belt conveyor antifreeze and dust removal method comprises the following steps:

[0040] Construction of an antifreeze preparation room;

[0041] A negative pressure induced dust removal fan system 2 is installed at the transfer point at the tail of the belt conveyor and at the head of the belt conveyor for primary antifreeze and dust removal, and antifreeze is supplied through the antifreeze preparation room;

[0042] An antifreeze spray system 1 is arranged on the outside and inside of the belt conveyor belt to perform secondary antifreeze dust removal. Antifreeze is supplied through the antifreeze preparation room, and the softening treatment of frozen and hardened materials on the belt is achieved by spraying the antifreeze;

[0043] A multi-stage cleaning device is installed on the outside of the belt conveyor belt. The multi-stage cleaning device is used in conjunction with the softened frozen and adhered materials to clean the frozen and adhered impurities on the belt surface to ensure the cleanliness of the belt surface.

[0044] The suspended dust-containing mist particles are sucked into the air duct by the dust removal fan. After the three-stage dust removal by the dust removal fan, the coal dust is centrifugally separated inside the fan and discharged in the form of water-coal sludge. The water-coal sludge is discharged into the antifreeze recovery device, and the purified air is directly discharged into the room. The antifreeze after wet atomization dust removal is recovered through the recovery device, and the recovered antifreeze is continued to be used after sedimentation and filtration.

[0045] In some embodiments, the antifreeze preparation room is provided with water source, antifreeze source, and gas source interfaces to provide water source and antifreeze source for the crushing station, and an antifreeze proportioning station, antifreeze storage room, and control room are provided in the station.

[0046] The antifreeze ratio is adjusted according to the current temperature. When the temperature is -15°C, the antifreeze specific gravity is 1.13, when the temperature is -20°C, the antifreeze specific gravity is 1.17, when the temperature is -25°C, the antifreeze specific gravity is 1.2, when the temperature is -30°C, the antifreeze specific gravity is 1.22, when the temperature is -35°C, the antifreeze specific gravity is 1.24, when the temperature is -40°C, the antifreeze specific gravity is 1.26, when the temperature is -45°C, the antifreeze specific gravity is 1.27, when the temperature is -50°C, the antifreeze specific gravity is 1.28, when the temperature is -55°C, the antifreeze specific gravity is 1.3, and the antifreeze ratio is shown in Table 1.

[0047] Table 1 Antifreeze ratio table

[0048]

[0049]

[0050] The operating principle of the antifreeze system is that before the belt carries the material, according to different low temperature conditions, different concentrations of special antifreeze liquid are sprayed on the belt bearing surface to form a uniform and fine antifreeze liquid isolation layer between the belt and the material, so as to prevent the belt from freezing and sticking to the material in winter. The material on the belt surface is cleaned by the cleaner on the head of the belt conveyor to reduce the material falling on the belt in the return section.

[0051] The spraying system of the antifreeze adhesive system adopts a negative pressure induced spray system. Through the gas-liquid mixed spraying device, the antifreeze liquid can be fully atomized and sprayed on the belt surface with a certain pressure, forming a uniform and fine antifreeze liquid isolation layer on the belt surface. While ensuring the antifreeze adhesive effect of the tape, the amount of antifreeze liquid sprayed can be minimized. It has the advantages of good atomization effect, wide spray coverage area, strong raw material adhesion and raw material saving.

[0052] The physical properties of the special antifreeze used in this application are shown in Table 2.

[0053] Table 2 Physical properties comparison table of special antifreeze

[0054]

[0055]

[0056] In some embodiments, the antifreeze sticky spray system 1 adopts an intermittent spray system and is interlocked with the start and stop signals of the belt conveyor to achieve automatic start and stop.

[0057] In some embodiments, see Figure 3 The negative pressure induced dust removal fan system 2 includes a wet dust removal fan 21 and an anti-corrosion water tank 22. The two ends of the wet dust removal fan 21 are respectively a dust-laden air inlet 23 and a clean air outlet 24. The liquid inlet of the wet dust removal fan 21 is connected to the anti-corrosion water tank 22 through a fan antifreeze supply pipeline 25, and the liquid outlet of the wet dust removal fan 21 is connected to the anti-corrosion water tank 22 through an antifreeze recovery pipeline 26; the anti-corrosion water tank 22 is divided into an antifreeze sedimentation tank 221 and an antifreeze purification tank 222, and the antifreeze sedimentation tank 221 is connected to the clean air outlet 24. The pool 221 and the antifreeze purification pool 222 are separated by a partition plate, and an overflow port is arranged on the partition plate. The liquid inlet of the wet dust removal fan 21 is connected with the antifreeze sedimentation pool 221 through the fan antifreeze supply pipeline 25, and the liquid outlet of the wet dust removal fan 21 is connected with the antifreeze purification pool 222 through the antifreeze recovery pipeline 26; the antifreeze pump 27 and the filter 28 are installed on the fan antifreeze supply pipeline 25, and a sewage pipe is arranged at the bottom of the antifreeze sedimentation pool 221, and a sewage valve 29 is arranged on the sewage pipe.

[0058] The negative pressure induced dust removal fan system 2 is interlocked with the start and stop signal of the belt conveyor to realize automatic start and stop. The suspended dust mist particles are sucked into the air duct by the dust removal fan through the dusty air inlet 23, and then after the three-stage dust removal by the wet dust removal fan 21, the coal dust is centrifugally separated inside the wet dust removal fan 21 and discharged in the form of water-coal sludge. The water-coal sludge is discharged into the antifreeze sedimentation tank 221 from the antifreeze recovery pipeline 26 along with the antifreeze. The purified air is directly discharged into the room through the clean air outlet 24. The antifreeze after wet atomization dust removal enters the antifreeze sedimentation tank 221 for recovery, and then after sedimentation, the upper antifreeze enters the antifreeze purification tank 222. The antifreeze in the antifreeze purification tank 222 enters the fan antifreeze supply pipeline 25 through the antifreeze pump 27 and enters the wet dust removal fan 21 again for recycling. The filter 28 filters the precipitated antifreeze to ensure the cleanliness of the antifreeze, and regularly cleans the sediment in the antifreeze sedimentation tank 221 through the sewage pipe.

[0059] In some embodiments, see Figure 3 The wet dust removal fan 21 includes a local mine ventilator 211, a spray system 212, a base 213 and a wet vibrating wire dust collector 214. The local mine ventilator 211 is installed on the base 213, the spray system 212 is installed on the local mine ventilator 211, and the front end of the local mine ventilator 211 is provided with a wet vibrating wire dust collector 214. The fan antifreeze supply pipeline 25 is connected to the spray system 212, and the spray system 212 adopts a negative The negative pressure induced nozzle includes an air duct 2121, an antifreeze liquid inlet pipe 2122, a negative pressure nozzle 2123, and a nozzle mounting bracket 2124. The air duct 2121 and the antifreeze liquid inlet pipe 2122 are connected to the negative pressure nozzle 2123, the fan antifreeze liquid supply pipeline 25 is connected to the antifreeze liquid inlet pipe 2122, the air duct 2121 is connected to the fan, and the negative pressure nozzle 2123 is installed on the mine local ventilation fan 211 through the nozzle mounting bracket 2124.

[0060] As the impeller rotates at high speed, the negative pressure generated draws the dust-laden wind flow into the fan. When the dust-laden wind flow passes through the first spray water curtain in front of the impeller, it mixes with the water mist sprayed by the water curtain and then enters the fan. Under the stirring of the fan impeller, the dust-laden wind flow and the water curtain are further mixed when passing through the fan, enhancing the interaction between the water curtain and the dust in the wind flow. Driven by the fan, the dust-laden wind flow enters the vibrating string filter plate of the dust collector.

[0061] There is another water sprayer in front of the vibrating string filter plate, which further strengthens the mixing and adsorption of the water curtain and the dusty air. When this mixture reaches the vibrating string filter plate, it is blocked and forms dust particles or powder agglomerates on the fibers (stainless steel wire) of the vibrating string filter plate. At the same time, the dusty gas passing through causes the fibers to vibrate under the impact of the airflow, which strengthens the conflict between the water mist particles and the dust in the dusty gas, and improves the capture rate of fine dust. The vibration also improves the self-cleaning ability of the vibrating string filter plate's own fibers. As the water sprayer continuously sprays the vibrating string filter plate, the dusty gas passing through the vibrating string filter plate becomes a mixture of water mist and wet dust particles and dust agglomerates. Some dust particles or dust agglomerates are captured and fall with the thickening of the water curtain or their own weight with the water flow, and at the same time, the dust accumulated on the vibrating string filter plate is self-cleaned. The remaining dust and particles collide with the water curtain and become wet dust particles and dust agglomerates and enter the cyclone guide body.

[0062] The dust particles and dust clusters entering the cyclone guide body produce high-speed rotation under the action of wind flow, and are captured by the interaction with the water curtain particles. The dust particles that are not captured are thrown to the wall of the dust collector under the action of centrifugal force and mixed with the water film attached to the dust collector and continuously moving forward to be captured, so that the dust particles are separated from the dirty wind flow; the water mist thrown to the wall of the dust collector forms a layer of water film on the dust collector that continuously rotates along the direction of the dust collector outlet and entrains or adsorbs dust particles, which is diverted from the wind flow at the dust collector dehydrator and discharged from the sewage outlet. The purified wind flow is discharged from the outlet, achieving the purpose of purifying the dust-containing wind flow.

[0063] like Figure 4 As shown, the negative pressure induction nozzle adopts an air-water mixed spray, and each negative pressure nozzle 2123 is connected to the air duct 2121 and the antifreeze liquid inlet pipe 2122. The high-speed steam mist jet generated by each negative pressure nozzle 2123 can form a negative pressure area around it and produce a large fog group, which induces dusty air into the fog group, and small fog particles hit the dust in the fog group and capture and moisten it. The moistened dust particles settle as the fog particles gather.

[0064] In some embodiments, a dust suppression curtain 3 is provided at the outlet of the sealed material guide chute at the tail of the belt conveyor, and a spray nozzle 4 is installed, which solves the problem of dust overflow from the material guide chute.

[0065] In some embodiments, the cleaning device includes a head roller cleaner 5, a spiral cleaner 6, and a brush cleaner 7. The head roller cleaner 5 is installed at the head of the belt conveyor, and its cleaning end is in contact with the outer belt of the head roller of the belt conveyor. The spiral cleaner 6 and the brush cleaner 7 are installed on the lower side of the belt conveyor, and their cleaning ends are in contact with the bottom belt of the belt conveyor.

[0066] The frozen and hardened materials on the belt are softened by spraying antifreeze liquid, and then the treated frozen and hardened materials are cleaned by using a multi-stage cleaning device to remove frozen and sticky impurities on the belt surface to ensure the cleanliness of the belt surface. The sticky materials on the belt are cleaned for the first time by the head roller cleaner 5 to remove most of the sticky materials on the belt, and then the second spiral cleaner 6 handles the remaining relatively hard sticky materials, and then the brush cleaner 7 cleans the sticky materials handled by the spiral cleaner 6, so as to achieve the purpose of thorough cleaning.

[0067] Economic benefits:

[0068] Avoid equipment hidden dangers caused by excessive belt sticking in winter, improve the stability and safety of chemical raw coal supply, reduce the labor intensity of manual dust cleaning, save labor costs and thus increase the company's economic benefits; it can reduce coal powder falling by more than 1,600 tons each year. According to the market price of 450 yuan per ton of coal, it can reduce coal losses worth 720,000 yuan each year.

[0069] Safety Benefits:

[0070] At present, the high dust concentration in the on-site working environment will seriously endanger the health of employees and easily induce occupational disease pneumoconiosis. When personnel are inspecting equipment, the high dust concentration around them affects their sight and easily causes casualties. Dust in blind spots is prone to spontaneous combustion and can easily cause fire accidents. At the same time, there are many electrical equipment around the working site, and the accumulation of coal dust concentration can easily lead to explosion accidents. This project can avoid the above incidents to the greatest extent.

[0071] Environmental benefits:

[0072] The main pollutant in the transportation of coal is coal dust particles, especially the 5.4-kilometer-long conveyor that needs to cross grassland. The coal transportation operation is easy to pollute the environment around the belt. Therefore, the long-distance belt conveyor anti-freezing and sticking system and cleaning and dust removal device are put into use to meet environmental protection requirements.

[0073] Finally, it should be noted that, in this article, relationships such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms include, include or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0074] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0075] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A method for antifreezing and dust removal of a long-distance belt conveyor, characterized in that: The long-distance belt conveyor antifreeze and dust removal method comprises the following steps: Construction of an antifreeze preparation room; A negative pressure induced dust removal fan system (2) is installed at the transfer point at the tail of the belt conveyor and at the head of the belt conveyor to perform primary antifreeze and dust removal, and antifreeze is supplied through the antifreeze preparation room; An antifreeze spray system (1) is arranged on the outer side and the inner side of the belt conveyor belt to perform secondary antifreeze dust removal, and antifreeze is supplied through the antifreeze preparation room, and the antifreeze is sprayed to soften the frozen and hardened materials on the belt; A multi-stage cleaning device is installed on the outside of the belt conveyor belt. The multi-stage cleaning device is used in conjunction with the softened frozen and adhered materials to clean the frozen and adhered impurities on the belt surface to ensure the cleanliness of the belt surface.

2. The long-distance belt conveyor antifreeze and dust removal method according to claim 1 is characterized in that: The antifreeze preparation room is provided with water source, antifreeze source and gas source interfaces to provide water source and antifreeze source for the crushing station. The station is provided with an antifreeze proportioning station, an antifreeze storage room and a control room.

3. The antifreeze and dust removal method for a long-distance belt conveyor according to claim 2 is characterized in that: The antifreeze ratio is adjusted according to the current temperature. When the temperature is -15°C, the antifreeze specific gravity is 1.13, when the temperature is -20°C, the antifreeze specific gravity is 1.17, when the temperature is -25°C, the antifreeze specific gravity is 1.2, when the temperature is -30°C, the antifreeze specific gravity is 1.22, when the temperature is -35°C, the antifreeze specific gravity is 1.24, when the temperature is -40°C, the antifreeze specific gravity is 1.26, when the temperature is -45°C, the antifreeze specific gravity is 1.27, when the temperature is -50°C, the antifreeze specific gravity is 1.28, and when the temperature is -55°C, the antifreeze specific gravity is 1.

3.

4. The method for antifreezing and dust removal of a long-distance belt conveyor according to claim 1, 2 or 3, characterized in that: The antifreeze sticky spray system (1) adopts an intermittent spray system and is interlocked with the start and stop signal of the belt conveyor to realize automatic start and stop.

5. The antifreeze and dust removal method for a long-distance belt conveyor according to claim 4 is characterized in that: The negative pressure induced dust removal fan system (2) comprises a wet dust removal fan (21) and an anti-corrosion water tank (22). The two ends of the wet dust removal fan (21) are respectively a dust-laden air inlet (23) and a clean air outlet (24). The liquid inlet of the wet dust removal fan (21) is connected to the anti-corrosion water tank (22) through a fan antifreeze supply pipeline (25), and the liquid outlet of the wet dust removal fan (21) is connected to the anti-corrosion water tank (22) through an antifreeze recovery pipeline (26).

6. The method for antifreezing and dust removal of a long-distance belt conveyor according to claim 5 is characterized in that: The anti-corrosion water tank (22) is divided into an antifreeze liquid sedimentation tank (221) and an antifreeze liquid purification tank (222). The antifreeze liquid sedimentation tank (221) and the antifreeze liquid purification tank (222) are separated by a partition plate, and an overflow port is arranged on the partition plate. The liquid inlet of the wet dust removal fan (21) is connected to the antifreeze liquid sedimentation tank (221) through the fan antifreeze liquid supply pipeline (25), and the liquid outlet of the wet dust removal fan (21) is connected to the antifreeze liquid purification tank (222) through the antifreeze liquid recovery pipeline (26).

7. The method for antifreezing and dust removal of a long-distance belt conveyor according to claim 6 is characterized in that: An antifreeze pump (27) and a filter (28) are installed on the antifreeze supply pipeline (25) for the fan, and a sewage pipe is arranged at the bottom of the antifreeze sedimentation tank (221), and a sewage valve (29) is arranged on the sewage pipe.

8. The method for antifreezing and dust removal of a long-distance belt conveyor according to claim 6 or 7, characterized in that: The wet dust removal fan (21) comprises a local mine ventilator (211), a spray system (212), a machine base (213) and a wet vibrating wire dust collector (214). The local mine ventilator (211) is mounted on the machine base (213), the spray system (212) is mounted on the local mine ventilator (211), a wet vibrating wire dust collector (214) is arranged at the front end of the local mine ventilator (211), a fan antifreeze supply pipeline (25) is connected to the spray system (212), and the spray system (212) adopts A negative pressure induction nozzle comprises an air duct (2121), an antifreeze liquid inlet pipe (2122), a negative pressure nozzle (2123), and a nozzle mounting bracket (2124); the air duct (2121) and the antifreeze liquid inlet pipe (2122) are connected to the negative pressure nozzle (2123); a fan antifreeze liquid supply pipeline (25) is connected to the antifreeze liquid inlet pipe (2122); the air duct (2121) is connected to the fan; and the negative pressure nozzle (2123) is mounted on a mine local ventilator (211) via a nozzle mounting bracket (2124).

9. The method for antifreezing and dust removal of a long-distance belt conveyor according to claim 8 is characterized in that: A dust suppression curtain (3) is arranged at the outlet of the sealed material guide trough at the tail of the belt conveyor, and a spray nozzle (4) is installed.

10. The method for antifreezing and dust removal of a long-distance belt conveyor according to claim 9, characterized in that: The cleaning device comprises a head roller cleaner (5), a spiral cleaner (6) and a brush cleaner (7). The head roller cleaner (5) is installed at the head of the belt conveyor, and its cleaning end contacts the outer belt of the head roller of the belt conveyor. The spiral cleaner (6) and the brush cleaner (7) are installed at the lower side of the belt conveyor, and their cleaning ends contact the bottom belt of the belt conveyor.

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