Powerful dust removal device for tunnel construction

Abstract

The utility model discloses a powerful dust removal device for tunnel construction, which comprises a mixing mechanism for mixing solute and solvent to form biological agent mixed liquor, a spraying mechanism communicated with the mixing mechanism through a liquid conveying pipe and used for spraying the biological agent mixed liquor into a tunnel, and a ventilation dust removal mechanism, an air inlet of the ventilation and dust removal mechanism is provided with a dust removal grid used for blocking dust, and a first dust collection bag is arranged below the dust removal grid. A biological agent mixed solution capable of adsorbing dust is generated through the mixing mechanism and is sprayed on the surface of a to-be-constructed material through the spraying mechanism, so that the generation of dust is inhibited from the source; after construction is started, the spraying mechanism is closed, the ventilation and dust removal mechanism is started, a dust removal grid is arranged at an air inlet, dust is blocked at the dust removal grid under the action of air flow and falls into a first dust collection bag below the dust removal grid due to the dead weight of the dust, and therefore dust removal can be conducted before tunnel construction and in the tunnel construction process.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of dust removal equipment, in particular to a powerful dust removal device for tunnel construction. Background Art

[0002] Tunnels are engineering structures buried in the ground and are a form of human use of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels. The drilling and blasting method is still the mainstream method in the field of tunnel construction. During the excavation process, blasting, drilling, lining and other operations will produce high concentrations of dust. Construction workers who are in a high-concentration dust environment for a long time will develop severe pneumoconiosis due to the accumulation of dust in their lungs. At the same time, dust can easily cause the accuracy of high-precision construction instruments and meters to decrease, greatly shortening the service life of machinery and equipment, and seriously affecting the progress of tunnel construction. Therefore, tunnel dust removal technology is extremely practical and necessary.

[0003] There is a kind of biological nanofilm dust suppression technology, which sprays the biological nanofilm on the surface of the material to be constructed, and uses the physical adsorption of the biological nanofilm to adsorb small dust particles and aggregate them into large dust particles. Due to the increase in the weight of the dust particles, they cannot float in the air and settle down, thereby achieving the purpose of dust removal. However, this technology focuses on dust suppression at the source before construction, and cannot handle the dust generated after construction. Therefore, there will still be dust during the construction process, which will affect the health of construction workers and construction equipment. Therefore, there is an urgent need for a powerful dust removal device that can suppress dust before and during tunnel construction. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a powerful dust removal device for tunnel construction which can perform dust suppression before and during tunnel construction and can be flexibly arranged on various construction equipment to achieve higher dust removal efficiency.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A powerful dust removal device for tunnel construction includes a mixing mechanism for mixing solutes and solvents to form a biological agent mixture, and a spraying mechanism connected to the mixing mechanism via an infusion tube and used to spray the biological agent mixture into the tunnel. It also includes a ventilation and dust removal mechanism, wherein the air inlet of the ventilation and dust removal mechanism is provided with a dust removal grille for blocking dust, and a first dust collecting bag is provided below the dust removal grille.

[0007] As a further improvement of the above technical solution:

[0008] The mixing mechanism comprises a solution reserve tank, and a solute reserve tank and a solvent reserve tank respectively connected thereto, and valve 1 is arranged between the solute reserve tank and the solution reserve tank, and between the solvent reserve tank and the solution reserve tank.

[0009] The mixing mechanism also includes a compression foaming device which is respectively connected to the solute reserve tank, the solvent reserve tank and the solution reserve tank. The solute flowing out of the solute reserve tank and the solvent flowing out of the solvent reserve tank enter the compression foaming device and are stirred and mixed to form a biological agent mixture, which then flows into the solution reserve tank.

[0010] The spray mechanism includes a telescopic rod and a spray pipe connected thereto; the fixed end of the telescopic rod is fixedly connected to a ventilation and dust removal mechanism or a mixing mechanism; one end of the spray pipe is connected to an infusion tube and the other end is provided with a spray head, and the spray head moves with the movable end of the telescopic rod.

[0011] The ventilation and dust removal mechanism comprises a cylindrical shell, in which a plurality of fan blades are arranged; a secondary spray port for mixed liquid connected with a solution storage tank is arranged between the dust removal grille and the fan blades.

[0012] A dust conveyor for conveying dust particles out of the cylindrical housing is installed below the fan blades.

[0013] The dust conveyor comprises a collecting platform installed under the fan blades for carrying dust particles, a dust scraping mechanism connected to the collecting platform for removing dust, and a second dust collecting bag arranged at the end of the collecting platform for collecting dust.

[0014] The dust scraping mechanism comprises gears arranged at both ends of the collecting platform and chains wound around the gears, and a scraper for pushing dust to fall into the second dust collecting bag is fixed on the chain.

[0015] A dust concentration detection probe is installed at the free end of the telescopic rod; the signal of the dust concentration detection probe is connected to a control device for adjusting the fan blade rotation speed and the scraper movement speed according to the dust concentration.

[0016] The ventilation and dust removal mechanism or the mixing mechanism is provided with a fixed connection piece for connecting the dust removal device with an external structure.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] A biological agent mixture that can absorb dust is generated through a mixing mechanism and sprayed on the surface of the material to be constructed through a spraying mechanism, thereby suppressing the generation of dust at the source; after the construction starts, the spraying mechanism is closed and the ventilation and dust removal mechanism is opened, and a dust removal grille is arranged at the air inlet. Under the action of the wind flow, the dust is blocked at the dust removal grille and falls into the first dust collecting bag under the dust removal grille due to its own weight, so that dust can be removed before and during tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the powerful dust removal device for tunnel construction in Example 1.

[0020] The numbers in the figure represent: 1. mixing mechanism; 11. solute storage tank; 12. solvent storage tank; 13. compression foaming device; 14. solution storage tank; 15. valve one; 17. air compressor; 2. infusion tube; 21. valve four; 3. spray mechanism; 31. telescopic rod; 32. valve three; 33. spray pipe; 34. nozzle; 35. dust concentration detection probe; 4. ventilation and dust removal mechanism; 41. air inlet; 42. dust removal grille; 43. first dust bag; 44. cylindrical shell; 45. secondary spray port of mixed liquid; 46. air outlet; 47. fan blade; 48. dust conveyor; 481. collection platform; 482. dust scraping mechanism; 483. gear; 484. chain; 485. scraper; 49. second dust bag; 50. fixing bolt. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example

[0023] like Figure 1 As shown, the powerful dust removal device for tunnel construction of this embodiment includes a mixing mechanism 1 for mixing solutes and solvents to form a biological agent mixture, and a spraying mechanism 3 connected to the mixing mechanism 1 through an infusion pipe 2 and used to spray the biological agent mixture into the tunnel, and also includes a ventilation and dust removal mechanism 4, the air inlet 41 of the ventilation and dust removal mechanism 4 is provided with a dust removal grille 42 for blocking dust, and a first dust collection bag 43 is provided below the dust removal grille 42. The biological agent mixture that can absorb dust is generated by the mixing mechanism 1, and is sprayed on the surface of the material to be constructed through the spraying mechanism 3, thereby suppressing the generation of dust at the source; after the construction starts, the spraying mechanism 3 is closed and the ventilation and dust removal mechanism 4 is opened, and the dust removal grille 42 is arranged at the air inlet 41. Under the action of the wind flow, the dust is blocked at the dust removal grille 42, and due to its own weight, it will fall into the first dust collection bag 43 below the dust removal grille 42, so that dust can be removed before and during the tunnel construction.

[0024] In this embodiment, the mixing mechanism 1 includes a solution storage tank 14, and a solute storage tank 11 and a solvent storage tank 12 respectively connected thereto. A valve 15 is provided between the solute storage tank 11 and the solution storage tank 14, and between the solvent storage tank 12 and the solution storage tank 14, which can control the corresponding solute and solvent ratio. Different types of sedimentation agent mixtures can be configured to adapt to various construction materials and construction environments through different types of solutes and solvents and their corresponding ratios. Preferably, the main components of the solute can be selected from biological agents such as coconut and animal extracts, and the solvent can be selected from aqueous solutions, which are mixed to form nano-scale fine foams, namely bio-nanofilms. The bio-nanofilms can absorb and aggregate dust to form large dust particle clusters, increase their own weight and then settle, thereby achieving dust suppression effects.

[0025] In this embodiment, the mixing mechanism 1 also includes a compression foaming device 13 respectively connected to the solute reserve tank 11, the solvent reserve tank 12 and the solution reserve tank 14. The compression foaming device 13 is externally connected to an air compressor 17 for providing pressure for the compression foaming device 13. The solute flowing out of the solute reserve tank 11 and the solvent flowing out of the solvent reserve tank 12 enter the compression foaming device 13 and are stirred and mixed to form a biological agent mixture, and then flow into the solution reserve tank 14. The solution reserve tank 14 is connected to the spray mechanism 3 through the infusion tube 2 and the infusion flow rate is controlled by the valve 2 16.

[0026] In this embodiment, the spray mechanism 3 includes a telescopic rod 31 and a spray pipe 33 connected thereto; the fixed end of the telescopic rod 31 is fixedly connected to the ventilation and dust removal mechanism 4 or the mixing mechanism 1; one end of the spray pipe 33 is connected to the infusion tube 2 and controls the flow rate of the input mixed liquid through a valve 32, and the other end is provided with a nozzle 34, which moves with the movable end of the telescopic rod 31 to spray the mixed liquid onto construction materials at different distances.

[0027] In this embodiment, the ventilation and dust removal mechanism 4 includes a cylindrical shell 44, in which a plurality of blades 47 are installed. The blades 47 are arranged at intervals and are mounted on a rotating shaft. One end of the rotating shaft is connected to a motor 1 (not shown in the figure). Driven by the motor 1, the rotating shaft drives the blades 47 to rotate. Under the action of the blades 47, a negative pressure is formed near the air inlet 41 of the ventilation and dust removal mechanism 4, and the external dust-rich air is sucked into the air inlet 41, so that the dust removal grille 42 is used for dust removal, and the wind is output from the air outlet 46 to increase the fluidity of the air. A mixed liquid secondary spray port 45 connected to the solution reserve tank 14 is installed between the dust removal grille 42 and the blades 47. The mixed liquid secondary spray port 45 is connected to the solution reserve tank 14, and the infusion flow rate is controlled by a valve 421, so that the dust passing through the dust removal grille 42 is adsorbed and settled in the cylindrical shell 44.

[0028] In this embodiment, a dust conveyor 48 for outputting dust particles from the cylindrical housing 44 is installed below the fan blades 47. The dust combines with the biological agent mixed liquid sprayed from the secondary mixed liquid spray port 45 and settles on the dust conveyor 48, and is then transported to the second dust collecting bag 49, thereby completing the dust reduction treatment of most of the dust generated by the tunnel construction.

[0029] In this embodiment, the dust conveyor 48 includes a collection platform 481 installed under the fan blades 47 for carrying dust particles, a dust scraping mechanism 482 connected to the collection platform 481 for removing dust, and a second dust bag 49 arranged at the end of the collection platform 481 for collecting dust. In this embodiment, the first dust bag 43 and the second dust bag 49 are leaky bags, and water will flow directly out of the bag and will not be stored in the bag, so as to collect more dust. At the same time, the first dust bag 43 and the second dust bag 49 are detachably connected to the device for easy replacement.

[0030] In this embodiment, the dust scraping mechanism 482 includes gears 483 installed at both ends of the collection platform 481, and a chain 484 wound around the gear 483, and a scraper 485 is fixed on the chain 484 for pushing the dust into the second dust bag 49; the dust conveyor 48 also includes a motor 2 (not shown in the figure) connected to the gear 483. Driven by the motor 2, the gear 483 drives the chain 484 to drive the scraper 485 to move on the surface of the collection platform 481 to push the dust on the surface into the second dust bag 49, and the scraper 485 can move 360 ​​degrees around the collection platform 481, or move horizontally along the upper surface of the collection platform 481. The number of second dust bags 49 is determined according to the movement mode of the scraper 485.

[0031] In this embodiment, a dust concentration detection probe 35 is installed at the free end of the telescopic rod 31; the signal of the dust concentration detection probe 35 is connected to a control device (not shown in the figure) for adjusting the rotation speed of the fan blade 47 and the movement speed of the scraper 485 according to the dust concentration. The control device is respectively connected to the signals of motor one and motor two. The control device can send control signals to the two respectively, thereby changing the output rotation speed of motor one and motor two, and then changing the rotation speed of the fan blade 47 and the movement speed of the scraper 485.

[0032] In this embodiment, a fixed connection piece for connecting the dust removal device to an external structure is provided on the ventilation and dust removal mechanism 4 or the mixing mechanism 1. In this embodiment, two fixing bolts 50 are installed on the bottom of the ventilation and dust removal mechanism 4 to connect to the external structure; in other embodiments, other fixed connections such as rivets, pins, and welding nails can also be used to connect to the external structure to adapt to various working conditions.

[0033] Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A powerful dust removal device for tunnel construction, comprising a mixing mechanism (1) for mixing a solute and a solvent to form a biological agent mixture, and a spraying mechanism (3) connected to the mixing mechanism (1) via a liquid infusion pipe (2) for spraying the biological agent mixture into the tunnel, characterized in that: It also comprises a ventilation and dust removal mechanism (4), wherein the air inlet (41) of the ventilation and dust removal mechanism (4) is provided with a dust removal grille (42) for blocking dust, and a first dust collection bag (43) is provided below the dust removal grille (42).

2. The powerful dust removal device for tunnel construction according to claim 1 is characterized in that: The mixing mechanism (1) comprises a solution reserve tank (14), and a solute reserve tank (11) and a solvent reserve tank (12) respectively connected thereto, and a valve (15) is provided between the solute reserve tank (11) and the solution reserve tank (14), and between the solvent reserve tank (12) and the solution reserve tank (14).

3. The powerful dust removal device for tunnel construction according to claim 2 is characterized in that: The mixing mechanism (1) further comprises a compression foaming device (13) respectively connected to the solute reserve tank (11), the solvent reserve tank (12) and the solution reserve tank (14); the solute flowing out of the solute reserve tank (11) and the solvent flowing out of the solvent reserve tank (12) enter the compression foaming device (13), are stirred and mixed to form a biological agent mixed liquid, and then flow into the solution reserve tank (14).

4. The powerful dust removal device for tunnel construction according to claim 1 is characterized in that: The spray mechanism (3) comprises a telescopic rod (31) and a spray pipe (33) connected thereto; the fixed end of the telescopic rod (31) is fixedly connected to a ventilation and dust removal mechanism (4) or a mixing mechanism (1); one end of the spray pipe (33) is connected to a liquid infusion tube (2) and the other end is provided with a spray head (34), and the spray head (34) moves following the movable end of the telescopic rod (31).

5. The powerful dust removal device for tunnel construction according to claim 1 is characterized in that: The ventilation and dust removal mechanism (4) comprises a cylindrical outer shell (44) in which a plurality of fan blades (47) are installed; a mixed liquid secondary spraying port (45) connected to a solution storage tank (14) is installed between the dust removal grille (42) and the fan blades (47).

6. The powerful dust removal device for tunnel construction according to claim 5, characterized in that: A dust conveyor (48) for conveying dust particles out of the cylindrical housing (44) is installed below the fan blades (47).

7. The powerful dust removal device for tunnel construction according to claim 6 is characterized by: The dust conveyor (48) comprises a collecting platform (481) installed below the fan blade (47) for carrying dust particles, a dust scraping mechanism (482) connected to the collecting platform (481) for removing dust, and a second dust bag (49) arranged at the end of the collecting platform (481) for collecting dust.

8. The powerful dust removal device for tunnel construction according to claim 7, characterized in that: The dust scraping mechanism (482) comprises gears (483) mounted on both ends of the collecting platform (481), and a chain (484) wound around the gears (483), wherein a scraper (485) for pushing dust to fall into the second dust collecting bag (49) is fixed on the chain (484).

9. The powerful dust removal device for tunnel construction according to claim 4, characterized in that: A dust concentration detection probe (35) is installed at the free end of the telescopic rod (31); the signal of the dust concentration detection probe (35) is connected to a control device for adjusting the rotation speed of the fan blade (47) and the movement speed of the scraper (485) according to the dust concentration.

10. The powerful dust removal device for tunnel construction according to claim 1, characterized in that: The ventilation and dust removal mechanism (4) or the mixing mechanism (1) is provided with a fixed connection piece for connecting the dust removal device to an external structure.

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