Air purification device for removing smoke, dust and toxic gases from mines

Abstract

The air purification device for removing smoke, dust and toxic gas in mine caves proposed by the present invention; one end of the main frame close to the ground is connected to an operation box, and the other end is connected to a hair dryer, and the operation box is electrically connected to the hair dryer; wherein a fan is arranged in the hair dryer, and a negative ion emission module is installed in the cavity of the hair dryer along the blowing direction of the fan, and the negative ion emission module is used to ionize the air to generate negative ions; a high-voltage electrostatic adsorption net and a negative ion purification net are installed at the air inlet; smoke, dust and pollution sources in the air are polymerized with negative ions, so that they lose their activity and settle, and at the same time, the generated negative ions are diffused over a large range by using a fan, and can be rapidly diffused over a large range in the air to actively polymerize with smoke, dust and toxic gases, thereby achieving electrical adsorption, neutralization sedimentation and chemical decomposition. All pollution sources that have not been purified in the air are purified again by the high-voltage electrostatic adsorption net at the air inlet, thereby achieving the effect of active and passive purification.

Description

Technical Field

[0001] The invention relates to the technical field of smoke and dust removal in mines, and in particular to an air purification device for removing smoke, dust and toxic gases in mines. Background Art

[0002] In the prior art, due to the poor air permeability of the mine tunnel during excavation, a large amount of smoke, dust and toxic gases will be generated after the machine excavation and drilling and blasting. In particular, the ventilation and air permeability of the mine tunnel is worse when the mine tunnel advances to a kilometer away. Due to the spatial limitation of the passage, the degree of reflux is high; and it is also impossible to quickly purify the pollution sources such as smoke, dust, carbon monoxide, methane, sulfur dioxide, hydrogen sulfide, etc. generated after the mine tunnel blasting. If these smoke, dust and harmful gases are not handled in time, they will cause fatal harm to the human body. It takes 2-4 hours to work, which seriously affects work efficiency. The prior art usually uses excavation of ventilation wellheads and the addition of air supply systems to deal with these pollution sources, which cannot quickly and truly solve the pollution sources generated; ventilation shafts and discharged pollution sources will also pollute the surrounding environment. Therefore, in view of the predicament of the prior art, there is an urgent need for a device that can quickly remove smoke, dust and toxic gases to achieve air purification effects. Summary of the invention

[0003] In order to solve the existing problems, the present invention provides a purification device which can quickly remove smoke, dust and toxic gases in a mine.

[0004] To achieve the above-mentioned purpose, the present invention provides an air purification device for removing smoke, dust and toxic gases in mines, comprising a main frame, an operating box and a hair dryer; one end of the main frame close to the ground is connected to the operating box, and the other end is connected to the hair dryer, and the operating box is electrically connected to the hair dryer; wherein a fan is arranged in the hair dryer, and a negative ion emission module is installed in the cavity of the hair dryer along the blowing direction of the fan, and the negative ion emission module is used to ionize air to generate negative ions; the operating box is electrically connected to the negative ion emission module.

[0005] Preferably, a water tank is connected to one side of the operation box, and the operation box is electrically connected to a water pump in the water tank, and the water tank is fixedly connected to the main frame; a spray head is also installed on the side wall of the air outlet of the hair dryer, and the spray head is connected to the water outlet of the water pump.

[0006] Preferably, a plurality of spray heads are provided, and the spray heads are arranged in a circular array on the side wall of the air outlet; and the negative ion emission module is located between the fan and the air outlet.

[0007] Preferably, the inner wall of the hair dryer is connected with a cross-arranged fixing frame to form a cross fixing frame, and the negative ion emission module includes a negative ion circuit module and a discharge needle module, the negative ion circuit module is fixed on the side of the fixing frame away from the fan, the discharge needle module is evenly arranged at a certain point of the negative ion circuit module away from the fixing frame, and the discharge needle tip of the discharge needle module points to the blowing direction.

[0008] Preferably, a plurality of negative ion emission modules are provided, and each negative ion emission module is independently provided and electrically connected to the operation box respectively.

[0009] Preferably, a high-voltage electrostatic adsorption net is provided at the rear air inlet of the hair dryer, and a high-voltage electrostatic circuit module is provided in the operating box, and the high-voltage electrostatic circuit module is electrically connected to the high-voltage electrostatic adsorption net.

[0010] Preferably, a negative ion grounding purification net is provided on a side of the high-voltage electrostatic adsorption net away from the fan, and the negative ion grounding purification net is provided with a grounding cable, and the grounding cable is used to conduct air static electricity.

[0011] Preferably, an anti-collision net is provided on a side of the high-voltage electrostatic adsorption net close to the fan, and the grid hole size of the anti-collision net is smaller than that of the high-voltage electrostatic adsorption net.

[0012] Preferably, the cross-section of the rear air inlet of the hair dryer is larger than the cross-section of the air outlet of the hair dryer.

[0013] Preferably, the inner cavity of the hair dryer has a guide protrusion arranged in the opposite direction of blowing to form a plurality of guide air ducts.

[0014] The beneficial effects of the present invention are as follows: an air purification device for removing smoke, dust and toxic gases in mines proposed by the present invention comprises a main frame, an operating box and a hair dryer; one end of the main frame close to the ground is connected to the operating box, and the other end is connected to the hair dryer, and the operating box is electrically connected to the hair dryer; wherein a fan is arranged in the hair dryer, and a negative ion emission module is installed in the cavity of the hair dryer along the blowing direction of the fan, and the negative ion emission module is used to ionize the air to generate negative ions; the operating box is electrically connected to the negative ion emission module; the negative ion emission module is used to ionize the air to generate negative ions; a high-voltage electrostatic adsorption net and a negative ion purification net are installed at the air inlet. The operation box is electrically connected to the negative ion emission module and the high-voltage electrostatic adsorption module; since a large amount of visible smoke particles and toxic gases are generated after blasting in the mine, after using the negative ion generator, the smoke, dust and pollution sources in the air aggregate with the negative ions, making them inactive and precipitating. At the same time, the fan is used to diffuse the generated negative ions over a large range, so that the generated negative ions can be rapidly diffused over a large range in the air to actively aggregate with smoke, dust and toxic gases, thereby achieving electrical adsorption, neutralization and sedimentation, and chemical decomposition. All unpurified pollution sources in the air are purified again through the high-voltage electrostatic adsorption net at the air inlet, thereby achieving the effect of combining active purification and passive purification. The smoke and dust are quickly decomposed and removed to purify the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural stereogram of the present invention;

[0016] Figure 2 is a cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the rear view angle of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the air outlet portion of the present invention;

[0019] Figure 5 This is a circuit diagram of a negative ion emission module of the present invention;

[0020] Figure 6 This is a circuit diagram of a high-voltage electrostatic circuit module of the present invention;

[0021] Figure 7 This is a device control circuit diagram of the present invention.

[0022] The main component symbols are described as follows:

[0023] 1. Main frame; 2. Operation box; 3. Hair dryer; 31. Fan; 32. Negative ion emission module; 321. Negative ion circuit module; 322. Discharge needle module; 33. Spray head; 34. Fixed frame; 35. Tail air inlet; 351. High-voltage electrostatic adsorption net; 352. Negative ion grounding purification net; 353. Anti-collision net; 4. Water tank 5. Water pump. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0025] In the following description, general election example details are given to provide a deeper understanding of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. It should be understood that the specific embodiments are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be understood that when the terms "comprise" and or "include" are used in this specification, they indicate the existence of the stated features, integers, steps, operations, elements or components, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0027] In the prior art, a large amount of visible smoke and smoke mixed with a large amount of toxic gases will be formed in the mine after blasting. Due to the space limitation of the mine, the air fluidity itself is poor. The prior art usually treats these pollution sources by excavating ventilation wellheads and adding air supply systems, which cannot really solve the pollution sources. The pollution sources discharged by the shaft and exhaust will also pollute the surrounding environment. The purification efficiency is also very low, and it takes 2-4 hours to work normally, which seriously affects the work efficiency. What is particularly important is that since the main hazards to human health and the difficult to deal with toxic gases and smoke in the mine are toxic gases and smoke, according to this idea, this scheme adopts negative ion active purification technology, high-voltage electrostatic passive adsorption technology, and spray atomization reduction technology to electrically adsorb, neutralize and settle, and chemically decompose smoke, dust, carbon monoxide, methane, sulfur dioxide, hydrogen sulfide and other pollution sources to achieve the effect of rapid air purification. The specific scheme is as follows:

[0028] The present invention provides an air purification device for removing smoke, dust and toxic gases in mines. Figure 1-Figure 4; It includes a main frame 1, an operation box 2 and a hair dryer 3; the main frame 1 is connected to the operation box 2 at one end close to the ground, and the other end is connected to the hair dryer 3, the operation box 2 is electrically connected to the hair dryer 3, a diesel generator is installed in the operation box, and it can also be directly connected to the mains, compatible with 380 volts of power supply, and compatible with AC220 volts; wherein a fan 31 is arranged in the hair dryer 3, and a negative ion emission module 32 is installed in the cavity of the hair dryer 3 along the blowing direction of the fan 31, and the negative ion emission module 32 is used to ionize the air to generate negative ions; the operation box 2 is electrically connected to the negative ion emission module 32; for the specific circuit implementation of the negative ion emission module, please refer to Figure 5 , which can be achieved through a negative ion generating circuit. For example, the 220V mains electricity is rectified and current limited by a module, and then controlled by a thyristor rectifier to generate oscillations. After being boosted by a booster, it is rectified to obtain a negative voltage of 50,000V. After discharge, the air is discharged to generate ionization and generate negative ions. Then a 380V fan is used to supply air, and the air supply range can reach 35 meters.

[0029] In this embodiment, a water tank 4 is connected to one side of the operation box 2, and the operation box 2 is electrically connected to the water pump in the water tank 4, and the water tank 4 is fixedly connected to the main frame 1; a spray head 33 is also installed on the side wall of the air outlet of the hair dryer 3, and the spray head 33 is connected to the water outlet of the water pump. The water tank is a 200-liter container, which is also equipped with an automatic suspension alarm monopoly device, which uses a float to float on the water surface, and then detects the water level through the position of the float to remind timely water addition. At the same time, chemical precipitation reagents can be stored in the water tank. At the same time, the spray head adopts a rotatable structure to adjust the local spray volume; the rotation method can adopt interference fit or ball head rod connection, which are common methods in the prior art and will not be repeated here. It is worth noting that due to the use of negative ion emission active purification and high-voltage electrostatic adsorption and spray head water spray, there are certain requirements for its use order. First, turn on the fan and keep it running, then turn on the negative ion emission module to ionize the air to produce a large number of negative ions, which are diffused into the air through the fan, and at the same time turn on the high-voltage electrostatic adsorption function. The active purification and passive purification functions complement each other to achieve the effect of smoke and dust removal. At this time, the smoke, dust and charged dust of harmful gases are combined and settled to achieve the air purification effect. Then turn on the spray head, and the spray direction of the spray head is set along the blowing direction, and then water mist is used to oxidize various toxic gases and all pollution sources and odors, decompose and restore them into high-quality air. The spray head uses a circular pipe with a diameter of 52cm and 20 nozzles with adjustable spray particle size. The high-power output of the water spray electric pump is used to atomize and spray the special purification formula water into the air, purifying and restoring the odor in the air into high-quality air.

[0030] In the present embodiment, the inner wall of the hair dryer 3 is connected with a cross-arranged fixed frame 34 to form a cross fixed frame, and the negative ion emission module 32 includes a negative ion circuit module 321 and a discharge needle module 322, and the negative ion circuit module is fixed on the fixed frame away from the fan side, and the discharge needle module is evenly arranged at a certain distance from the negative ion circuit module to the fixed frame, and the discharge needle tip of the discharge needle module points to the blowing direction. The negative ion emission module is provided with multiple, and each negative ion emission module is independently arranged and electrically connected to the operating box respectively. Since the mine area is far away from the urban area, and as such a high-voltage device, its loss is relatively serious, so it is not repaired when damaged, in order not to affect the progress of the project, so the negative ion emission module is provided with multiple, and work independently of each other to prevent the occurrence of all damaged events; specifically, four groups of negative ion emission modules are installed, evenly arranged on the cross fixed frame, and each group of discharge needle modules is composed of 18 gold-plated steel needles; and the cross fixed frame is made of insulating material.

[0031] In this embodiment, the rear air inlet 35 of the hair dryer 3 is provided with a high-voltage electrostatic adsorption net 351, see Figure 6 A high-voltage electrostatic circuit module is provided in the operation box 2, and the high-voltage electrostatic circuit module is electrically connected to the high-voltage electrostatic adsorption network 351; through the high-voltage electrostatic circuit module, a high-voltage electric field of 20000-26000V is provided for the high-voltage electrostatic adsorption network, so as to achieve the adsorption of charged dust in the intake air; because the environment of the mine cave usually forms a return air duct, and the hair dryer must have an air inlet to achieve blowing, so when blowing at the air outlet, wind pressure is formed, so that some dust particles are scattered, and at the same time, the air inlet is a low-pressure environment, and they will naturally enter the hair dryer. If they are not processed, they will directly contact the fan and the discharge needle module over time, causing subsequent maintenance difficulties and losses. After adding the high-voltage electrostatic adsorption network, the high-voltage electrostatic field attached to the metal network can adsorb and intercept the charged dust in the low-pressure environment, so under the cooperation of negative ion injection and high-voltage electrostatic adsorption, a high adsorption effect is achieved.

[0032] In a more specific embodiment, a negative ion grounding purification net 352 is provided on the side of the high-voltage electrostatic adsorption net 351 away from the fan, and the negative ion grounding purification net is provided with a grounding cable, and the grounding cable is used to conduct air static electricity; since the ionized environment at the front end generates a large amount of air static electricity, and the high-voltage electrostatic field at the rear end also generates static electricity, there is a large amount of static electricity in the air, and in order to prevent these charges from causing harm to the human body, the negative ion grounding purification net in the negative pressure environment adsorbs static electricity, and conducts the charge to the earth through the grounding cable to form a ground, thereby ensuring the safety of the use environment.

[0033] In this embodiment, an anti-collision net 353 is provided on the side of the high-voltage electrostatic adsorption net 351 close to the fan, and the grid hole size of the anti-collision net is smaller than that of the high-voltage electrostatic adsorption net. Because in mountainous areas, it can prevent small animals such as insects from flying into the hair dryer. In addition, the overall device adopts a metal shell to achieve a good grounding effect.

[0034] In this embodiment, the cross section of the tail air inlet of the hair dryer 3 is larger than the cross section of the air outlet of the hair dryer, and the inner cavity of the hair dryer has a guide protrusion arranged in the opposite direction of blowing to form a plurality of guide air ducts.

[0035] Application Examples

[0036] After blasting in the mine, aim the air outlet at the location where smoke and dust are concentrated, then check the water level in the water tank, and adjust the position of the hair dryer and the angle of the spray head. The spray head uses a circular pipe with a diameter of 52cm and 20 nozzles with adjustable spray particle size, which are aimed at the location with the maximum smoke and dust concentration. In addition, 2 sets of high-brightness spotlights with adjustable angles are installed on the operation box to adapt to night operations and environments with excessive smoke and dust concentration. First, turn on the fan for blowing, and then turn on the negative ion emission module for negative ion emission, using negative ions to combine with charged harmful gases in the smoke and dust, and then achieve the effect of sedimentation and purification. While turning on the negative ion emission module, turn on the high-voltage electrostatic circuit of the high-voltage electrostatic adsorption network; so that both the air inlet and outlet can adsorb and settle the charged dust, and the large amount of static electricity in the air generated by ionization is neutralized and discharged by the grounded negative ion grounding purification network; all pollution sources generated by blasting in the mine can be completely purified of smoke and dust within 15 to 25 minutes. Then turn off the high-voltage static electricity and negative ion functions, and start the exclusive formula of purification solution to spray for 10 minutes. Through atomization, the purification solution can be sprayed to a distance of 20 to 25 meters, oxidizing various toxic gases and all pollution sources and odors, decomposing and reducing them into high-quality air. Figure 7 A driving circuit and a switching circuit are arranged in the operation box, and the driving circuit and the switching circuit MCU control circuit are connected to the power supply circuit; the negative ion emission module and the high-voltage electrostatic circuit module are respectively connected to the MCU control circuit through their own switches, thereby forming a circuit module that can be independently controlled and operated.

[0037] The technical effects of the present invention are:

[0038] 1. Effectively purify the air in a short time from the smoke, dust, carbon monoxide, methane, sulfur dioxide, hydrogen sulfide and other pollution sources generated after blasting, and provide a healthy working environment for the workers in the mine. And enter the working environment 2 to 4 hours in advance to improve work efficiency and ensure safe production;

[0039] 2. Generate high-concentration negative ions, and use high-speed fans to shoot negative ions to a distance of 30 to 35 meters, which will physically adsorb and settle smoke and dust, electrically adsorb and settle, and chemically decompose them, instantly purifying smoke and dust. Then, use the uncleaned air returned by the air cycle to purify the uncleaned air again using the high-voltage electrostatic net and negative ion grounding purification net at the air inlet, achieving the complementary functions of active purification and passive purification;

[0040] 3. Through atomization, the purification solution is sprayed to a distance of 20 to 25 meters, oxidizing, decomposing and reducing various toxic gases, all pollution sources and odors into high-quality air;

[0041] 4. The air inlet uses three layers of nets, with each layer separated by 5CM. The inner layer is a stainless steel anti-collision net with a diameter of 58CM; the middle layer is a high-voltage electrostatic adsorption net with a diameter of 50CM; the outer layer is a negative ion grounding purification net with a diameter of 78CM; each layer of the net has different design functions.

[0042] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An air purification device for removing smoke, dust and toxic gases in mines, characterized in that: It comprises a main frame, an operation box and a hair dryer; one end of the main frame close to the ground is connected to the operation box, and the other end is connected to the hair dryer, and the operation box is electrically connected to the hair dryer; wherein a fan is arranged in the hair dryer, a negative ion emission module is installed in the cavity of the hair dryer along the blowing direction of the fan, and the operation box is electrically connected to the negative ion emission module; the negative ion emission module is used to ionize air to generate negative ions; A water tank is connected to one side of the operation box, and the operation box is electrically connected to a water pump in the water tank, and the water tank is fixedly connected to the main frame; a spray head is also installed on the side wall of the air outlet of the hair dryer, and the spray head is connected to the water outlet of the water pump; The inner wall of the hair dryer is connected with a cross-arranged fixing frame to form a cross fixing frame, the negative ion emission module includes a negative ion circuit module and a discharge needle module, the negative ion circuit module is fixed on the side of the fixing frame away from the fan, the discharge needle module is evenly arranged at a certain point of the negative ion circuit module away from the fixing frame, and the discharge needle tip of the discharge needle module points to the blowing direction, the negative ion emission module is provided with a plurality of negative ion emission modules, and each of the negative ion emission modules is independently provided and electrically connected to the operation box respectively; The spray heads are provided in plurality, and the spray heads are arranged in a circular array on the side wall of the air outlet; the negative ion emission module is located between the fan and the air outlet; The tail air inlet of the hair dryer is provided with a high-voltage electrostatic adsorption net, and the operation box is provided with a high-voltage electrostatic circuit module, and the high-voltage electrostatic circuit module is electrically connected to the high-voltage electrostatic adsorption net; A negative ion grounding purification net is arranged on one side of the high-voltage electrostatic adsorption net away from the fan. The negative ion grounding purification net is provided with a grounding cable, and the grounding cable is used for conducting air static electricity.

2. The air purification device for removing smoke, dust and toxic gases in mines according to claim 1 is characterized in that: An anti-collision net is arranged on one side of the high-voltage electrostatic adsorption net close to the fan, and the grid hole size of the anti-collision net is smaller than that of the high-voltage electrostatic adsorption net.

3. The air purification device for removing smoke, dust and toxic gases in mines according to claim 1 is characterized in that: The cross section of the tail air inlet of the hair dryer is larger than the cross section of the air outlet of the hair dryer.

4. The air purification device for removing smoke, dust and toxic gases in mines according to claim 3 is characterized in that: The inner cavity of the hair dryer is provided with a guide protrusion arranged in the opposite direction of the blowing, so as to form a plurality of guide air ducts.

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