A dust reduction device and dust reduction method for tunnel construction environment based on negative ion purification

Abstract

The present application discloses a dust reduction device and a dust reduction method for a tunnel construction environment based on negative ion purification, and relates to the technical field of environmental dust removal and reduction. The present application optimizes and improves the structure of the spray dust removal device in the prior art, uses a fan to form an airflow to blow water mist to a mesh belt body stained with liquid, and cooperates with a negative ion generator to achieve the effect of efficient dust reduction and reduction. The technical effect of the tunnel construction environment dust reduction device based on negative ion purification being flexible to use, easy to clean, not prone to clogging, convenient to maintain, wide in scope, efficient in dust reduction and collection, and low in pollution is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental dust removal and reduction, and in particular to a tunnel construction environmental dust reduction device and a dust reduction method based on negative ion purification. Background Art

[0002] During the construction of tunnels, especially long tunnels, the internal air quality directly affects the construction efficiency, construction progress and the health of construction workers. It also plays an important and even decisive role in the construction management and progress of the entire project.

[0003] The main source of air pollution during construction is the dust generated during drilling, rock drilling, blasting, slag transportation, shotcrete and other construction processes. The dust reduction measures currently taken in tunnel construction mainly include spray dust reduction, filtration dust removal, ultrasonic dust removal, magnetized water dust removal, etc. Among them, spray dust reduction is to spray water mist into the air. The combination of water mist and dust in the air will accelerate the sedimentation of dust, and it is also the most widely used dust removal method.

[0004] In the prior art, spray dust removal generally uses a nozzle or a spray pipe to generate water mist; the nozzle is easy to clog, difficult to clean, cumbersome to maintain and costly; the water droplets sprayed by the spray pipe (a pipe with one or more rows of fine holes) are large (partially even water columns), the water consumption is large, the flexibility of use is poor, the range of action is poor, and the dust reduction effect is far worse than that of the nozzle spray; and a large amount of water will accumulate near the spray pipe during use, causing a muddy construction environment;

[0005] During the tunnel construction process, in addition to dust, there is also exhaust gas generated by construction machinery and vehicles; in addition, long-term spraying and dust removal can easily nourish mold and bacteria, which has a great impact on human health; negative ions are commonly known as air "vitamins". In the tunnel construction environment, the release of negative ions can effectively sterilize and prevent mildew, reducing the threat of harmful microorganisms such as mold and bacteria in the air to human health; on the other hand, it can combine and settle with dust particles in the air, effectively purifying the ambient air and ensuring the health of construction workers.

[0006] Therefore, there is a need for a tunnel construction environment dust reduction equipment based on negative ion purification that is flexible to use, easy to clean, not prone to clogging, convenient to maintain, has a wide range of applications, and has high dust reduction efficiency and low pollution. Summary of the invention

[0007] The embodiment of the present application solves the technical problems in the prior art that the dust reduction equipment for tunnel construction environments is poor in flexibility, easy to clog and difficult to clean and maintain, has a small range of action, consumes a lot of water and has a poor dust reduction effect by providing a dust reduction equipment for tunnel construction environments based on negative ion purification. The embodiment of the present application achieves the technical effects that the dust reduction equipment for tunnel construction environments based on negative ion purification is flexible in use, easy to clean, not prone to clogs, convenient to maintain, has a wide range of action, and has efficient dust reduction and collection with little pollution.

[0008] The embodiment of the present application provides a dust reduction device for a tunnel construction environment based on negative ion purification, including a basic bearing box, a negative ion generator, an external fan, a lifting support body, and a dust removal belt laying component;

[0009] The basic bearing box is provided with a clean water tank and a sewage tank, both of which are provided with a reversing column;

[0010] The negative ion generator is positioned at the end of the basic carrying box through the carrying frame;

[0011] The external fan is fixed on the top of the supporting frame;

[0012] The lifting support body is positioned on the top of the basic bearing box, and includes a basic bearing body, a built-in fan and a reversing roller; the basic bearing body is rod-shaped as a whole and is arranged longitudinally; the built-in fan is fixed on the basic bearing body; the reversing roller is arranged transversely and positioned on the top of the basic bearing body;

[0013] The dust removal belt laying assembly comprises a first rotating roller 510, a second rotating roller and a dust removal belt; the first rotating roller and the second rotating roller are respectively located at the top of the clean water tank and the sewage tank; the dust removal belt is partially or entirely a mesh structure, and the mesh structure portion occupies at least one half of the entire dust removal belt, and the two ends are respectively wound and positioned on the first rotating roller and the second rotating roller, and are laid in a W shape under the guidance of the reversing column and the reversing roller;

[0014] The external fan and the internal fan cooperate with each other to generate airflow to carry water droplets from the dust removal belt to participate in dust removal.

[0015] Furthermore, the basic carrier includes a rotating base, a connecting telescopic rod and a bearing frame;

[0016] The rotating base is cylindrical, has a built-in motor, and is rotatably connected to the basic bearing box;

[0017] The built-in fan is fixed on the top of the rotating base;

[0018] The bottom of the connecting telescopic rod is fixed to the top of the built-in fan, and its length direction is the same as that of the rotating base and perpendicular to the axial direction of the rotating shaft of the rotating base, playing the role of load-bearing connection;

[0019] The bearing frame is a rigid plate body with a "C"-shaped longitudinal section, which is arranged horizontally and serves to bear the reversing roller;

[0020] The middle part of the bearing frame is fixed to the top of the connecting telescopic rod.

[0021] Preferably, both the built-in fan and the external fan are blow-suction dual-purpose fans. Before and after the air flow they output carries water droplets to participate in dust suppression, they can be controlled to operate for air suction for dust collection, so that the dust in the air accumulates on the dust removal belt and enters the sewage tank with the movement of the dust removal belt and is washed out.

[0022] Preferably, it further includes side baffle cloth assemblies, which are used to block the overflow of the air flow in the space surrounded by the dust removal belt. There are two of them, which are symmetrically arranged and are located on both sides of the dust removal belt respectively;

[0023] The side baffle cloth assembly includes a cloth winding drum and a baffle cloth;

[0024] The cloth winding drum is a manual winding drum or an electric winding drum, which is arranged horizontally and is located on one side of the rotating base and is used to wind and release the baffle cloth;

[0025] The baffle cloth is made of cotton cloth or rain cloth, and is integrally strip-shaped. One end is wound and positioned on the cloth winding drum, and the other end is detachably fixed to the end of the bearing frame.

[0026] Preferably, it further includes a second laying assembly;

[0027] The second laying assembly has the same structure as the dust removal belt laying assembly. The components corresponding to the first rotating roller, the second rotating roller and the dust removal belt of the second laying assembly are the extension roller one, the extension roller two and the second belt body respectively;

[0028] The extension roller one and the extension roller are respectively arranged close to the first rotating roller and the second rotating roller; both ends of the second belt body are positioned on the extension roller one and the extension roller two respectively;

[0029] During the movement of the dust removal belt, the second belt body moves at a differential speed with the dust removal belt to scrub and clean the dust removal belt.

[0030] Preferably, it further includes a sealing curtain assembly;

[0031] The sealing curtain assembly includes a base rope, a rope head positioning body and a shielding curtain cloth;

[0032] One end of the base rope is detachably fixed to one end of the bearing frame, and the other end is fixed to the rope head positioning body;

[0033] The rope head positioning body is a rigid heavy block, which is placed on the ground and is used to keep the base rope straight; when in use, it is placed close to the edge of the tunnel floor;

[0034] The shielding curtain is a gauze curtain or a cotton curtain, which is approximately triangular in shape as a whole, and the top is positioned on the base rope;

[0035] The other end of the supporting frame is detachably fixed with a steel wire rope, and the other end of the steel wire rope is detachably fixed to the end of the supporting frame of another device away from the base rope; a curtain is positioned on the steel wire rope, and the curtain is rectangular as a whole, which is used to fill the gap when two sets of equipment are used side by side.

[0036] Preferably, a hard cross bar that plays a bearing role is fixed on the top of the built-in fan;

[0037] There are two connecting telescopic rods, which are symmetrically arranged, and one end of each of them is hinged to a position near the end of the bearing frame, and the other end is hinged to a position near the end of the hard cross bar;

[0038] Two connecting telescopic rods, a hard cross bar and a bearing frame together form a frame that is approximately in the shape of a U; the axial direction of the rotating shaft of the connecting telescopic rod is perpendicular to the length direction of the bearing frame, and torsion springs are provided at the hinge positions of the connecting telescopic rods. The torsion springs are used to maintain the enclosed shape; when in use, the bearing frame is controlled to tilt as needed to adapt to the shape of the tunnel top.

[0039] Preferably, a through groove is provided near the center of the carrying frame, and the through groove is used to facilitate the interference deformation rod to penetrate the carrying frame;

[0040] A resisting deformation rod is fixed near the center of the rigid cross bar, and the resisting deformation rod is a telescopic rod controlled by the control unit to extend and retract, and is inserted into the through slot;

[0041] The number of the reversing roller is one and it is a soft column made of rubber, and both ends are fixed on the bearing frame; when in use, the resisting deformation rod can be controlled to extend and resist the reversing roller to deform it so that it fits the tunnel roof more closely.

[0042] Preferably, the combined use of two tunnel construction environment dust reduction devices based on negative ion purification can be applied to the scene of local construction without affecting the passage of tunnel vehicles;

[0043] Two tunnel construction environment dust reduction devices based on negative ion purification are set up at both ends of the construction site one after the other; a blocking curtain assembly is arranged and the bearing frames of the two sets of equipment are connected by steel wire ropes, and one or more curtains are set on the steel wire ropes to enclose a horizontal columnar space with a fan-shaped longitudinal section.

[0044] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0045] By optimizing and improving the structure of the spray dust removal equipment in the prior art, an air flow is formed by a fan to blow water mist to a mesh belt body stained with liquid, and a negative ion generator is used to achieve efficient dust reduction and dust removal. The technical problems of the prior art in which the dust reduction equipment in the tunnel construction environment has poor flexibility, is easy to clog and difficult to clean and maintain, has a small range of action, consumes a lot of water and has poor dust reduction effect are effectively solved. The technical effect of the dust reduction equipment in the tunnel construction environment based on negative ion purification, which is flexible to use, easy to clean, not easy to clog, convenient to maintain, has a wide range of action, and has efficient dust reduction and collection with little pollution, is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a simplified diagram of the appearance of the dust reduction equipment for tunnel construction environment based on negative ion purification;

[0047] Figure 2 It is a schematic diagram of the side structure of the dust reduction equipment for tunnel construction environment based on negative ion purification;

[0048] Figure 3 It is a schematic diagram of the structure of the lifting support body;

[0049] Figure 4 This is a simplified structural diagram of the basic bearing box;

[0050] Figure 5 It is a schematic diagram of the position relationship of the side guard cloth assembly;

[0051] Figure 6 It is a schematic diagram of the structure of the dust removal belt;

[0052] Figure 7 A schematic diagram showing the positional relationship between the dust removal belt laying component and the second laying component;

[0053] Figure 8 This is a simplified diagram of the layout of the blocking curtain assembly;

[0054] Fig. 9 A schematic diagram showing the positional relationship between the telescopic rod, the bearing frame, the reversing roller and the contact deformation rod;

[0055] Fig.10 This is a schematic diagram of the overall structure after the blocking curtain is installed.

[0056] In the figure:

[0057] A basic carrying box 100, a clean water tank 110, a sewage tank 120, a reversing column 130, a front baffle 140, a negative ion generator 200, a carrying frame 210, an external fan 300, a lifting support body 400, a rotating base 410, a built-in fan 420, a connecting telescopic rod 430, a carrying frame 440, a through groove 441, a reversing roller 450, a resisting deformation rod 460, a first rotating roller 510, a second rotating roller 520, a dust removal belt 530, a second laying assembly 540, a side baffle assembly 600, a cloth roll 610, a baffle cloth 620, a contact column 710, a shift rod 720, a blocking curtain assembly 800, a basic rope 810, a rope head positioning body 820, and a shielding curtain cloth 830. DETAILED DESCRIPTION

[0058] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0059] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0061] Embodiment 1

[0062] like Figures 1 to 4 As shown, the dust reduction equipment for tunnel construction environment based on negative ion purification of the present application includes a basic carrying box 100, a negative ion generator 200, an external fan 300, a lifting support body 400, a dust removal belt laying assembly, a power assembly and a control unit.

[0063] The basic carrying box 100 is a hard box structure, which is provided with a clean water tank 110 for storing clean water, and a sewage tank 120 for cleaning the dust removal belt 530; a transversely arranged reversing column 130 is positioned in both the clean water tank 110 and the sewage tank 120; the reversing column 130 is a hard cylinder, which serves to guide the direction of the dust removal belt 530 so that the position close to the reversing column 130 can be immersed in water, thereby facilitating water contact and cleaning.

[0064] The negative ion generator 200 is positioned at the end of the basic bearing box 100 through the bearing frame 210 and is arranged close to the clear water tank 110, playing the role of releasing negative ions; the negative ion generator 200 is a prior art and releases negative ions in a direction away from the basic bearing box 100, which will not be elaborated here; the bearing frame 210 is a plate body, a rod body or a frame structure, fixed on the basic bearing box 100, playing a supporting role.

[0065] The external fan 300 is fixed on the top of the bearing frame 210, with its axis parallel or approximately parallel to the ground, and operates under the control of the control unit to transport the water vapor-rich airflow (water mist) to the position where dust suppression is required.

[0066] Preferably, the jet direction of the external fan 300 is adjustable.

[0067] The lifting support body 400 is used to cooperate with the dust removal belt laying assembly to realize spraying, positioned on the top of the basic bearing box 100 and between the clear water tank 110 and the sewage tank 120. Its main body is rod-shaped and includes a rotating base 410, an internal fan 420, a connecting telescopic rod 430, a bearing frame 440 and a reversing roller 450;

[0068] The rotating base 410 is cylindrical, with a built-in motor, rotatably connected to the basic bearing box 100, located on the top of the basic bearing box 100 and between the clear water tank 110 and the sewage tank 120. The axial direction of the rotating shaft is parallel to the horizontal ground and the same as the width direction of the basic bearing box 100; the rotating base 410 rotates under the control of the control unit;

[0069] The internal fan 420 is a fan structure, fixed on the top of the rotating base 410, and is used to generate an airflow blowing towards the dust removal belt 530;

[0070] The circumscribed circle diameter of the air outlet of the internal fan 420 and the external fan 300 is greater than two-thirds of the width of the dust removal belt 530 and less than the width of the dust removal belt 530;

[0071] The connecting telescopic rod 430 is an electric telescopic rod structure, with its bottom fixed on the top of the internal fan 420. Its length direction is the same as the length direction of the rotating base 410 and perpendicular to the axial direction of the rotating shaft of the rotating base 410, playing a role of bearing connection;

[0072] The bearing frame 440 is a rigid plate body with a "C" - shaped longitudinal section, arranged horizontally, playing a role of bearing the reversing roller 450; the middle part of the bearing frame 440 is fixed on the top of the connecting telescopic rod 430;

[0073] The reversing roller 450 is a cylinder, which is arranged horizontally, and its two ends are positioned near the ends of the supporting frame 440 ; the length direction of the supporting frame 440 and the axial direction of the reversing roller 450 are both perpendicular to the connecting telescopic rod 430 .

[0074] The dust belt laying assembly is in the shape of a scroll as a whole, and includes a first rotating roller 510, a second rotating roller 520 and a dust belt 530; the first rotating roller 510 and the second rotating roller 520 are both cylinders that rotate under the drive of a motor and are used to reel in and release the dust belt 530; the first rotating roller 510 and the second rotating roller 520 are both arranged horizontally, positioned on the basic carrying box 100 and located at the top of the clean water tank 110 and the sewage tank 120 respectively; the dust belt 530 is a belt body, which is partially or completely a mesh structure; the mesh structure portion of the dust belt 530 occupies at least one-half of the entire dust belt 530 and the length of each non-mesh structure portion is less than 1 meter; the two ends of the dust belt 530 are respectively wound and positioned on the first rotating roller 510 and the second rotating roller 520, and are laid out in a W shape under the guidance of the reversing column 130 and the reversing roller 450, and are immersed in the clean water tank 110 and the sewage tank 120.

[0075] Preferably, the mesh openings of the mesh structure on the dust removal belt 530 are smaller than 1 cm.

[0076] Preferably, the mesh structure is distributed at multiple locations on the dust removal belt 530, and the size and density of the mesh holes at different locations are the same or different.

[0077] Preferably, Figure 6 As shown, the dust removal belt 530 is formed by alternately splicing sheet-like cotton cloth and mesh-like sheets.

[0078] The power assembly is used to provide power for the operation of various components of the tunnel construction environment dust reduction equipment based on negative ion purification in this application, and the control unit plays a role in controlling the coordinated operation of various components of the tunnel construction environment dust reduction equipment based on negative ion purification. Both are existing technologies and will not be elaborated here.

[0079] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0080] When the embodiment of the present application is actually used:

[0081] 1. First, the entire device is deployed at the construction site, and the negative ion generator 200 is directed toward the construction site;

[0082] 2. Fill the clean water tank 110 and the sewage tank 120 with water to ensure that the liquid level is at least 30 centimeters higher than the reversing column 130;

[0083] 3. When construction begins on site, first control the support body 400 to rotate and stretch it to make it upright; control the first rotating roller 510 and the second rotating roller 520 to rotate simultaneously, so that the dust removal belt 530 moves; at the same time, control the external fan 300 and the internal fan 420 to run simultaneously, and blow water mist to the target dust removal position (the water droplets adhering to the dust removal belt 530 are sprayed to the target dust removal position under the influence of wind force, accelerating the dust sedimentation and contact with the wall); the direction and wind speed of the external fan 300 and the moving speed of the dust removal belt 530 are set according to the actual dust removal needs; after the dust removal belt 530 on the first rotating roller 510 is released, the first rotating roller 510 and the second rotating roller 520 are controlled to reverse without the external fan 300 and the internal fan 420 running, so that the dust removal belt 530 is rewound on the first rotating roller 510.

[0084] Preferably, a water storage tank is also provided in the basic carrying box 100, and the water storage tank is connected to the clean water tank 110 and the sewage tank 120, wherein water can be transported to the clean water tank 110 and the sewage tank 120 under the action of a pump body, thereby achieving the replacement of water in the two tanks.

[0085] Preferably, the built-in fan 420 and the external fan 300 are both blowing and suction dual-purpose fans. Before and after they operate to output airflow carrying water droplets to participate in dust reduction, they can be controlled to operate to suck air to collect dust, and the dust in the air is accumulated on the dust removal belt 530, and as the dust removal belt 530 moves, it enters the sewage pool 120 and is washed out.

[0086] Preferably, when sucking air to collect dust, the external fan 300 guides the airflow to the dust removal belt 530, and the internal fan 420 blows out wind with an output less than half that of the external fan 300 and in the opposite direction to the external fan 300, so that the sucked dust has more opportunities to come into contact with the dust removal belt 530.

[0087] Preferably, in order to facilitate dust collection, the non-mesh structure on the dust removal belt 530 is made of cotton cloth.

[0088] Preferably, in order to further enhance the dust collection effect, as Figure 5As shown, the device of the present application also includes a side cloth block assembly 600, which is used to block the airflow overflow (restrained airflow) in the space surrounded by the dust removal belt 530. There are two side cloth block assemblies 600, which are symmetrically arranged and located on both sides of the dust removal belt 530 respectively; the side cloth block assembly 600 includes a cloth roll 610 and a cloth block 620; the cloth roll 610 is a manual roll or an electric roll, which is arranged horizontally and located on one side of the rotating base 410, and is used to roll up and release the cloth block 620; the cloth block 620 is a cotton cloth or a rain cloth, which is generally in the shape of a belt, one end of which is wound and positioned on the cloth roll 610, and the other end is detachably fixed to the end of the supporting frame 440; when the supporting body 400 is upright, the dust removal belt 530, the basic supporting box 100 and the two cloth blocks 620 together enclose a space that is approximately a horizontal triangular prism, thereby increasing the dust collection effect.

[0089] Preferably, in order to facilitate the falling of dust adhering to the dust removal belt 530, as Figure 4 As shown, an oscillating cleaning component is also provided in the sewage pool 120; the oscillating cleaning component includes a contact column 710 and a shift rod 720; the contact column 710 is arranged horizontally and abuts against the dust removal belt 530 in the sewage pool 120; the shift rod 720 is a telescopic rod arranged horizontally, one end of which is fixed on the inner wall of the sewage pool 120, and the other end is fixed on the contact column 710, and is telescopic under the control of the control unit; the number of the reversing rollers 450 on the bearing frame 440 is more than two, and at least one of them is rotated by the motor; the surface of the reversing roller 450 rotating by the motor is rough; the dust removal belt 530 passes between the reversing rollers 450 and abuts against each reversing roller 450; the dust removal belt 530 between the reversing roller 450 and the second rotating roller 520 is in a relaxed state; when the oscillating cleaning component is in operation, the shift rod 720 is frequently telescopic and retracted, and the dust removal belt 530 is vibrated to clean it.

[0090] Preferably, in order to facilitate the cleaning of the dust removal belt 530, as Figure 7 As shown, the device of the present application also includes a second laying component 540; the second laying component 540 has the same structure as the dust removal belt laying component. For the convenience of description, the components corresponding to the second laying component 540 and the first rotating roller 510, the second rotating roller 520 and the dust removal belt 530 of the dust removal belt laying component are defined as expansion roller one, expansion roller two and the second belt body respectively; expansion roller one and expansion roller are respectively arranged close to the first rotating roller 510 and the second rotating roller 520; the two ends of the second belt body are respectively positioned on expansion roller one and expansion roller two, and basically overlap with the dust removal belt 530; during the movement of the dust removal belt 530, the second belt body and the dust removal belt 530 move at a differential speed to scrub and clean the dust removal belt 530.

[0091] Preferably, during the tunnel construction process, multiple devices of the present application are used in coordination.

[0092] Preferably, the base carrying box 100 is provided with wheels at the bottom and a trailer hook at the end.

[0093] Preferably, the trailer can move multiple devices of the present application at one time.

[0094] Preferably, a spray gun is provided on one side of the basic carrying box 100, and the spray gun is used for washing vehicles (construction vehicles and the equipment of the present application itself).

[0095] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0096] The invention solves the technical problems in the prior art that the dust reduction equipment in the tunnel construction environment has poor flexibility in use, is easy to clog and difficult to clean and maintain, has a small range of action, consumes a lot of water and has poor dust reduction effect; the invention achieves the technical effects that the dust reduction equipment in the tunnel construction environment based on negative ion purification is flexible in use, easy to clean, not easy to clog, convenient to maintain, has a wide range of action, and has efficient dust reduction and collection with little pollution.

[0097] Embodiment 2

[0098] In order to further improve the practicality and applicability of the present application and avoid large-scale contamination of the tunnel during construction in the completed tunnel, the present embodiment adds a blocking curtain assembly 800 on the basis of the above embodiment, and adds a front baffle 140 at the end of the basic bearing box 100 near the bottom, specifically:

[0099] like Figure 8 As shown, the blocking curtain assembly 800 includes a base rope 810, a rope end positioning body 820 and a blocking curtain fabric 830;

[0100] One end of the base rope 810 is detachably fixed to one end of the bearing frame 440, and the other end is fixed to the rope end positioning body 820;

[0101] The rope end positioning body 820 is a hard weight placed on the ground to keep the base rope 810 straight; when in use, it is placed close to the edge of the tunnel ground;

[0102] The shielding curtain 830 is a gauze curtain or a cotton curtain, which is approximately triangular in shape as a whole, and the top is positioned on the base rope 810.

[0103] The front baffle 140 is a soft rubber plate, and the bottom is less than 3 cm from the ground, which plays a role in dust isolation.

[0104] The other end of the supporting frame 440 is detachably fixed with a steel wire rope, and the other end of the steel wire rope is detachably fixed to the end of the supporting frame 440 of another device away from the base rope 810; a curtain is positioned on the steel wire rope, and the curtain here is generally rectangular and is used to fill the gap when two sets of equipment are used side by side.

[0105] In an embodiment of the present application, two sets of dust reduction equipment for tunnel construction environment based on negative ion purification are used side by side; when in use, first place the two sets of equipment side by side, install the basic rope 810, the rope head positioning body 820 and the wire rope, and then control the extension of the lifting support body 400 so that its distance from the tunnel top is less than 10 cm; finally, arrange the blocking curtain assembly 800 to block the tunnel and prevent dust from leaking out.

[0106] Preferably, a hard cross bar that plays a bearing role is fixed to the top of the built-in fan 420; the number of the connecting telescopic rods 430 is two, which are symmetrically arranged, and one end of each is hinged at a position near the end of the bearing frame 440, and the other end is hinged at a position near the end of the hard cross bar; the two connecting telescopic rods 430, the hard cross bar and the bearing frame 440 together form a frame that is approximately in the shape of a U; the axial direction of the rotating shaft of the connecting telescopic rod 430 is perpendicular to the length direction of the bearing frame 440, and the hinge positions of the connecting telescopic rods 430 are provided with torsion springs, and the presence of the torsion springs is used to maintain the enclosed shape; in actual use, the bearing frame 440 can be controlled to tilt as needed to adapt to the shape of the tunnel top.

[0107] Preferably, Fig. 9 As shown, the support frame 440 is provided with a through groove 441 near the center, and the through groove 441 is used to facilitate the resistance deformation rod 460 to penetrate the support frame 440; the hard cross bar is fixed with a resistance deformation rod 460 near the center, and the resistance deformation rod 460 is a telescopic rod controlled by the control unit and penetrates the through groove 441; the number of the reversing roller 450 is one and it is a soft column made of rubber, and both ends are fixed on the support frame 440; when in use, the resistance deformation rod 460 can be controlled to extend and resist the reversing roller 450 to deform it and better fit the tunnel roof (the dust removal belt 530 has more mesh structures, so the small deformation caused by the deformation of the reversing roller 450 will not cause damage to it).

[0108] Embodiment 3

[0109] The combined use of two tunnel construction environment dust reduction devices based on negative ion purification can be applied to the scene of local construction without affecting the passage of tunnel vehicles; specifically:

[0110] Two tunnel construction environment dust reduction devices based on negative ion purification are set up at both ends of the construction site one after the other; a blocking curtain assembly 800 is arranged and the bearing frames 440 of the two sets of equipment are connected by wire ropes, and one or more curtains are set on the wire ropes (when the required length of the wire rope is long, multiple curtains can be used in combination), forming a Fig.10 The longitudinal section shown is a fan-shaped horizontal columnar space.

[0111] Furthermore, when the length of the steel wire rope used to connect the supporting frames 440 of the two sets of equipment is greater than 5 meters, one or more manual telescopic rods are used to stand on the ground to support the steel wire rope to prevent it from sagging.

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust reduction device for tunnel construction environment based on negative ion purification, characterized in that: It includes a basic bearing box (100), a negative ion generator (200), an external fan (300), a lifting support body (400), and a dust removal belt layout component; A water reservoir (110) and a sewage reservoir (120) are provided on the basic bearing box (100), and a reversing column (130) is positioned in each of them; The negative ion generator (200) is positioned at the end of the basic bearing box (100) through a bearing frame (210); The external fan (300) is fixed on the top of the bearing frame (210); The lifting support body (400) is positioned on the top of the basic bearing box (100), and includes a basic carrier, an internal fan (420), and a reversing roller (450); The basic carrier is in a rod shape and is longitudinally arranged; The internal fan (420) is fixed on the basic carrier; The reversing roller (450) is horizontally arranged and is positioned on the top of the basic carrier; The dust removal belt layout component includes a first rotating roller (510), a second rotating roller (520), and a dust removal belt (530); The first rotating roller (510) and the second rotating roller (520) are respectively located on the tops of the water reservoir (110) and the sewage reservoir (120); Part or all of the dust removal belt (530) is a mesh structure, and the mesh structure part on it occupies at least one-half of the entire dust removal belt (530), and both ends are respectively wound and positioned on the first rotating roller (510) and the second rotating roller (520), and is arranged in a W shape under the guidance of the reversing column (130) and the reversing roller (450); The external fan (300) and the internal fan (420) cooperate with each other to generate an air flow to carry water droplets from the dust removal belt (530) to participate in dust removal; The basic carrier includes a rotating base (410), a connecting telescopic rod (430), and a bearing frame (440); The rotating base (410) is cylindrical, with a built-in motor, and is rotatably connected to the basic bearing box (100); The internal fan (420) is fixed on the top of the rotating base (410); The bottom of the connecting telescopic rod (430) is fixed on the top of the internal fan (420), and its length direction is the same as the length of the rotating base (410) and is perpendicular to the axial direction of the rotating axis of the rotating base (410), playing a role of bearing connection; The bearing frame (440) is a rigid plate body with a "匚"-shaped longitudinal section, is horizontally arranged, and plays a role of bearing the reversing roller (450); The middle part of the bearing frame (440) is fixed on the top of the connecting telescopic rod (430); Both the internal fan (420) and the external fan (300) are blow-suction dual-purpose fans. Before and after the air flow they output carries water droplets to participate in dust reduction, they can be controlled to operate for air suction for dust collection, and the dust in the air accumulates on the dust removal belt (530) and enters the sewage reservoir (120) to be washed out as the dust removal belt (530) moves.

2. The dust reduction equipment for tunnel construction environment based on negative ion purification according to claim 1, characterized in that: It also includes a side baffle cloth component (600). The side baffle cloth component (600) is used to block the air leakage from the space surrounded by the dust removal belt (530). The number is two, and they are symmetrically arranged on both sides of the dust removal belt (530) respectively; The side cloth blocking assembly (600) comprises a cloth roll (610) and a cloth blocking (620); The cloth reel (610) is a manual reel or an electric reel, which is arranged transversely and located on one side of the rotating base (410) and is used to reel in and release the blocking cloth (620); The blocking cloth (620) is a cotton cloth or a rain cloth, and is in the shape of a belt as a whole, with one end wound around and positioned on the cloth reel (610), and the other end detachably fixed to the end of the carrying frame (440).

3. The dust reduction equipment for tunnel construction environment based on negative ion purification according to claim 1, characterized in that: Also included is a second deployment assembly (540); The second laying component (540) has the same structure as the dust removal belt laying component, and the components corresponding to the first rotating roller (510), the second rotating roller (520) and the dust removal belt (530) of the second laying component (540) and the dust removal belt laying component are expansion roller 1, expansion roller 2 and the second belt body respectively; The expansion roller 1 and the expansion roller are respectively arranged close to the first rotating roller (510) and the second rotating roller (520); the two ends of the second belt body are respectively positioned on the expansion roller 1 and the expansion roller 2; During the movement of the dust removal belt (530), the second belt body and the dust removal belt (530) move at a differential speed to scrub and clean the dust removal belt (530).

4. The dust reduction equipment for tunnel construction environment based on negative ion purification according to claim 1, characterized in that: Also included is a blocking curtain assembly (800); The blocking curtain assembly (800) comprises a base rope (810), a rope end positioning body (820) and a blocking curtain fabric (830); One end of the basic rope (810) is detachably fixed to one end of the bearing frame (440), and the other end is fixed to the rope end positioning body (820); The rope end positioning body (820) is a hard weight block placed on the ground and used to keep the base rope (810) straight; when in use, it is placed close to the edge of the tunnel ground; The shielding curtain (830) is a gauze curtain or a cotton curtain, and is approximately triangular in shape, with the top positioned on the base rope (810); A steel wire rope is detachably fixed to the other end of the supporting frame (440), and the other end of the steel wire rope is detachably fixed to the end of the supporting frame (440) of another device away from the base rope (810); a curtain is positioned on the steel wire rope, and the curtain is rectangular as a whole, and is used to fill the gap when two sets of equipment are used side by side.

5. The dust reduction equipment for tunnel construction environment based on negative ion purification according to claim 1, characterized in that: A hard cross bar that plays a bearing role is fixed on the top of the built-in fan (420); There are two connecting telescopic rods (430), which are symmetrically arranged, and each has one end hinged to a position near the end of the bearing frame (440), and the other end hinged to a position near the end of the hard cross bar; Two connecting telescopic rods (430), a hard cross bar and a bearing frame (440) together form a frame body in an approximately U-shaped body; the axial direction of the rotating shaft of the connecting telescopic rod (430) is perpendicular to the length direction of the bearing frame (440); the hinge positions of the connecting telescopic rod (430) are provided with torsion springs, and the torsion springs are used to maintain the enclosed shape; when in use, the bearing frame (440) is controlled to tilt as required to adapt to the shape of the tunnel roof.

6. The dust reduction equipment for tunnel construction environment based on negative ion purification as claimed in claim 5, characterized in that: A through groove (441) is provided near the center of the carrying frame (440), and the through groove (441) is used to facilitate the deformation rod (460) to penetrate the carrying frame (440); A resisting deformation rod (460) is fixed near the center of the hard cross bar. The resisting deformation rod (460) is a telescopic rod controlled to be telescopic by the control unit and penetrates into the through slot (441). The number of the reversing roller (450) is one and the reversing roller (450) is a soft column made of rubber material, with both ends fixed on the bearing frame (440); when in use, the resisting deformation rod (460) can be controlled to extend and resist the reversing roller (450) to deform the reversing roller and thus better fit the tunnel roof.

7. The dust reduction equipment for tunnel construction environment based on negative ion purification as claimed in claim 4, characterized in that: The combined use of two tunnel construction environment dust reduction devices based on negative ion purification can be applied to the scene of local construction without affecting the passage of tunnel vehicles; Two tunnel construction environment dust reduction devices based on negative ion purification are arranged one after the other at both ends of the construction site; a blocking curtain assembly (800) is arranged and the supporting frames (440) of the two sets of equipment are connected by steel wire ropes, and one or more curtains are arranged on the steel wire ropes to enclose a horizontal columnar space with a fan-shaped longitudinal section.

8. A dust reduction method, characterized in that: The tunnel construction environment dust reduction equipment based on negative ion purification as claimed in claim 1 is provided; the steps are: Step 1: firstly, the entire device is arranged at the construction site, and the negative ion generator (200) is directed toward the construction site; Step 2: Fill the clean water tank (110) and the sewage tank (120) with water to ensure that the liquid level is at least 30 centimeters higher than the reversing column (130); Step 3: When construction begins on site, first control the lifting support body (400) to rotate and stretch it to make it stand upright; control the first rotating roller (510) and the second rotating roller (520) to rotate simultaneously, so that the dust removal belt (530) moves; The external fan (300) and the internal fan (420) are controlled to run simultaneously to blow water mist toward the target dust removal position; the direction and wind speed of the external fan (300) and the moving speed of the dust removal belt (530) are set according to actual dust removal needs.

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