Dust removal device for tunnel construction

Abstract

The utility model discloses a dust removal device for tunnel construction. The dust removal device comprises a suction unit, a water mist dust falling bin, a filter screen filtering bin and a rack, the filter screen filtering bin comprises a filter screen filtering bin body, a plurality of filter screens, a filter screen rotating assembly and a back flushing assembly; the filter screen rotating assembly comprises a rotating shaft and a rotating motor; the center of the filter screen is fixed on the rotating shaft; a filtering partition plate is arranged in the filter screen filtering bin body and divides the interior of the filter screen filtering bin body into two spaces, and an open groove allowing the filter screen to pass through is formed in the filtering partition plate; and a back flushing assembly is arranged in the filtering partition plate. According to the utility model, a two-step dust removal scheme of water mist dust falling and filter screen filtering is adopted, air in a tunnel is introduced into the dust removal device through suction of the fan, and the air passes through the water mist dust falling bin and the filter screen filtering bin in sequence, so that the loss of the filter screen can be effectively reduced; according to the specific structure, a plurality of layers of rotatable filter screens are arranged in the filter screen filtering bin, so that the filter screens can be cleaned in time in the operation process, and maintenance-free or less maintenance is realized.

Description

Technical Field

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

[0002] During tunnel construction, a large amount of dust is often generated during tunnel drilling and blasting, slag transportation, shotcrete, concrete lining support construction and other construction processes. In order to ensure the health of workers in the tunnel, dust removal is required at the construction site. Currently, commonly used dust removal solutions include water mist precipitation and filtration dust removal. Among them, water mist precipitation is generally suitable for operating surfaces and has insufficient coverage. In high-dust scenarios, filtration dust removal using commonly used filter materials requires frequent replacement or cleaning of the filter screen. If it is not replaced in time, the dust removal effect will be seriously affected. Utility Model Content

[0003] The utility model aims to provide a dust removal device for tunnel construction to solve the problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a dust removal device for tunnel construction, including a suction unit, a water mist dust reduction bin, a filter bin, and a frame; the suction unit includes a fan and an air suction pipe; the other end of the air suction pipe is connected to the water mist dust reduction bin, and the water mist dust reduction bin is connected to the filter bin; the filter bin includes a filter bin body, a plurality of filters, a filter rotating assembly, and a back-blowing assembly; the filter bin body is an internal hollow cavity structure, and the filter rotating assembly includes a rotating shaft and a rotating motor; the center of the filter is fixed to the rotating shaft; a filter partition plate is provided inside the filter bin body to divide the interior of the filter bin body into two spaces, and a slot for the filter to pass through is provided on the filter partition plate; a back-blowing assembly is provided inside the filter partition plate.

[0005] Furthermore, the suction unit also includes a universal suction head, the fan is arranged in the suction pipe, the universal suction head is arranged at one end of the suction pipe, and the universal suction head includes a telescopic tube and a universal bracket; the telescopic tube is a polyurethane steel wire telescopic air duct.

[0006] Furthermore, the water mist dust reduction bin includes a spray component, a water mist dust reduction bin body, and a cleaning component; the water mist dust reduction bin body is an internal hollow cavity structure, with an air inlet provided on one side, an air outlet provided on the side opposite to the air inlet, and a sewage outlet provided below; a vertical partition board is provided inside the water mist dust reduction bin body, dividing the interior of the water mist dust reduction bin into two spaces connected to the left and right, and a water mist nozzle is provided on the top of the space close to the air inlet side; the spray component includes a water source, a first pump, and a water mist nozzle; the cleaning component includes a second pump and a water spray head; the water spray head is arranged in the space below the partition board and above the sewage outlet.

[0007] Furthermore, the filter is a metal filter, the outer diameter of the filter is smaller than the inner diameter of the filter bin, a raised ring is provided on the inner wall of the filter bin away from the air inlet of the filter, and the inner diameter of the raised ring is smaller than the outer diameter of the filter.

[0008] Furthermore, the filter partition plate is projected in the axial direction of the filter screen filter bin body into a trapezoidal tube shape, and a space projected in the axial direction of the filter screen filter bin body is separated inside the filter screen filter bin body. The top of the space is located below the rotating shaft, and the bottom is arranged at an angle. A back-blowing air outlet is provided at the bottom, and the height of one side of the back-blowing air outlet is lower.

[0009] Furthermore, the back-blowing assembly includes a connecting air duct and a vertical blowing pipe. The connecting air duct is arranged at the bottom of the space enclosed by the filter partition plate. The vertical blowing pipe is arranged in the space enclosed by the filter partition plate on the side of the filter screen away from the air inlet of the filter bin body, and an array-distributed air outlet is arranged on the side.

[0010] Furthermore, the back-blowing assembly also includes a metal brush, which is arranged on one side of the vertical blowing pipe.

[0011] Furthermore, when there are multiple filters, a back-blowing outlet is provided at the bottom of the filter partition plate between adjacent filter screens, and an inclined dust shield is provided in the enclosed space. The top and sides of the dust shield are fixedly connected to the filter partition plate, a gap is provided with the filter partition plate, and the lower part is inclined toward the air inlet side of the filter bin body.

[0012] The utility model provides a dust removal device for tunnel construction, which adopts a two-step dust removal scheme of water mist dust reduction + filter filtration. The air in the tunnel is introduced into the dust removal device through the suction of a fan, and passes through a water mist dust reduction bin and a filter filtration bin in turn, which can effectively reduce the loss of the filter. In terms of specific structure, multiple layers of rotatable filter screens are arranged in the filter filtration bin, which can be cleaned in time during operation, thereby achieving maintenance-free or low-maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall solution of the utility model.

[0014] Figure 2 It is a schematic diagram of a filter bin of another embodiment of the utility model.

[0015] Figure 3 It is a cross-sectional schematic diagram of a filter screen according to another embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of a backflush assembly in another embodiment of the utility model.

[0017] Figure 5 It is a schematic diagram of a filter bin of another embodiment of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] As attached Figure 1 As shown, a dust removal device for tunnel construction involved in the utility model includes a suction unit 1, a water mist dust reduction chamber 2, a filter screen filter chamber 3, and a frame 4.

[0020] The suction unit 1 , the water mist dust suppression bin 2 , and the filter bin 3 are arranged on a frame 4 .

[0021] The suction unit 1 includes a fan 11, a suction pipe 12, and a universal suction head 13. The fan 11 is arranged in the suction pipe 12, the universal suction head 13 is arranged at one end of the suction pipe 12, and the other end of the suction pipe 12 is connected to the water mist dust reduction bin 2, and the water mist dust reduction bin 2 is connected to the filter bin 3.

[0022] The fan 11 and the air suction pipe 12 are commercially available products. The universal suction head 13 includes a telescopic tube 131 and a universal bracket 132. The telescopic tube 131 is a common air duct, which can be a polyurethane steel wire telescopic air duct. The universal bracket 132 includes a vertical tube a1, a telescopic vertical tube a2, and a horizontal tube a3. The vertical tube a1 is fixed on the frame 4. The telescopic vertical tube a2 is inserted into the vertical tube a1 and can rotate around the axis. At the same time, the side of the telescopic vertical tube a2 is provided with array-distributed through holes, which cooperate with the limit holes on the top of the vertical tube a1, and the height of the telescopic vertical tube a2 is adjusted by the limit pin. One end of the horizontal tube a3 can be rotatably connected to the telescopic vertical tube a2 and locked by bolts, and the other end is connected to the telescopic tube 131. By adjusting the height of the telescopic vertical tube a2 and the angle of the horizontal tube a3, the air inlet of the telescopic tube 131 can be easily directed to the appropriate position.

[0023] The water mist dust suppression bin 2 includes a spray assembly 21, a water mist dust suppression bin body 22, and a cleaning assembly 23. The water mist dust suppression bin body 22 is a hollow cavity structure, with an air inlet on one side, an air outlet on the side opposite to the air inlet, and a sewage outlet at the bottom; a vertical partition plate 221 is provided inside the water mist dust suppression bin body 22, dividing the inside of the water mist dust suppression bin 2 into two spaces connected to the left and right, and a water mist nozzle is provided at the top of the space near the air inlet.

[0024] The spray assembly 21 includes a water source b1, a first pump b2, and a water mist nozzle b3. The cleaning assembly 23 includes a water source b1, a second pump b4, and a water spray head b5. The water spray head b5 is arranged below the partition plate 221 and above the sewage outlet, and sprays water at regular intervals to cover the inner wall of the water mist dust suppression bin 22.

[0025] The filter screen filtration bin 3 includes a filter screen filtration bin body 31 , a plurality of filter screens 32 , a filter screen rotating assembly 34 , and a back-blowing assembly 33 .

[0026] The filter housing 31 is a hollow cavity structure, with an air inlet and an air outlet provided on the side wall, and a filter 32 provided between the air inlet and the air outlet.

[0027] The filter 32 is a metal filter. Three groups of filters are provided in the attached figure. When multiple groups of filters are used, the mesh size of the filters gradually decreases. The filter 32 is disc-shaped, and its center is fixed to the rotating shaft 341 of the filter rotating assembly 34. The other end of the rotating shaft 341 extends out of the side wall of the filter filtration chamber 31 and is connected to the rotating motor 342, under which the filter 32 rotates.

[0028] The filter screen filter bin body 31 is provided with a filter partition plate 311 to divide the filter screen filter bin body 31 into two spaces, and a slot 3112 is provided on the filter partition plate for the filter screen 32 to pass through. A backflush assembly 33 is provided at the slot to backflush and clean the dust on the filter screen 32.

[0029] A back-blowing air outlet 3111 is provided on the filter screen filtering bin body 31 below the filtering partition plate 311 , and the back-blowing air outlet is connected to the air inlet of the water mist dust suppression bin 2 through an air duct.

[0030] Attached Figure 2 , 3 Another embodiment of the filter bin 3 is provided, wherein the filter partition plate 311 is projected in a trapezoidal tubular shape in the axial direction of the filter bin body 31, and a space is separated inside the filter bin body 31 that is projected in a trapezoidal shape in the axial direction of the filter bin body 31, wherein the top of the space is located below the rotating shaft 341, and the bottom of the space is arranged at an angle, and the height of one side of the back-blowing air outlet 3111 is lower.

[0031] The outer diameter of the filter 32 is smaller than the inner diameter of the filter housing 31 . A raised ring 312 is provided on the inner wall of the filter housing 31 at the side of the filter 32 away from the air inlet of the filter housing 31 . The inner diameter of the raised ring 312 is smaller than the outer diameter of the filter 32 and is used for blocking.

[0032] The back-blowing assembly 33 includes a connecting air duct 331 and a vertical blowing pipe 332. The connecting air duct 331 is arranged at the bottom of the space enclosed by the filter partition plate 311 to avoid interference with the filter screen 32. The vertical blowing pipe 332 is arranged on the side of the filter screen 32 away from the air inlet of the filter screen filter chamber 31 in the space enclosed by the filter partition plate 311, and an array of air outlets are arranged on the side for back-blowing.

[0033] Furthermore, as attached Figure 4 As shown (attached Figure 4 The air outlet on the side of the vertical blowing pipe 332 and the bristles on the metal brush 333 are not shown), and the back-blowing assembly 33 also includes a metal brush 333, which is arranged on one side of the vertical blowing pipe 332 and is located in front of the vertical blowing pipe 332 in the rotation direction of the filter 32, for cleaning the filter.

[0034] Furthermore, as attached Figure 5 As shown, an embodiment is provided with a plurality of filter screens 32, a back-blowing air outlet 3111 is provided between adjacent filter screens 32, and an inclined dust shield 334 is provided in the space enclosed by the filter partition plate 311 between adjacent filter screens 32, the top and side of the dust shield 334 are fixedly connected to the filter partition plate 311, a gap is provided with the filter partition plate 311 at the bottom, and the bottom is inclined toward the air inlet side of the filter bin body 31, so as to reduce the dust rebounded from the rear filter screen 32 from contaminating the front filter screen 32.

[0035] It should be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

Claims

1. A dust removal device for tunnel construction, characterized in that: It includes a suction unit, a water mist dust reduction bin, a filter bin, and a frame; the suction unit includes a fan and an air suction pipe; the other end of the air suction pipe is connected to the water mist dust reduction bin, and the water mist dust reduction bin is connected to the filter bin; the filter bin includes a filter bin body, a plurality of filters, a filter rotating assembly, and a back-blowing assembly; the filter bin body is an internal hollow cavity structure, and the filter rotating assembly includes a rotating shaft and a rotating motor; the center of the filter is fixed to the rotating shaft; a filter partition plate is provided inside the filter bin body to divide the inside of the filter bin body into two spaces, and a slot for the filter to pass through is provided on the filter partition plate; a back-blowing assembly is provided inside the filter partition plate.

2. The dust removal device for tunnel construction according to claim 1, characterized in that: The suction unit also includes a universal suction head. The fan is arranged in the suction pipe. The universal suction head is arranged at one end of the suction pipe. The universal suction head includes a telescopic tube and a universal bracket. The telescopic tube is a polyurethane steel wire telescopic air duct.

3. The dust removal device for tunnel construction according to claim 1, characterized in that: The water mist dust reduction bin includes a spray component, a water mist dust reduction bin body, and a cleaning component; the water mist dust reduction bin body is an internal hollow cavity structure, with an air inlet provided on one side, an air outlet provided on the side opposite to the air inlet, and a sewage outlet provided below; a vertical partition board is provided inside the water mist dust reduction bin body, dividing the interior of the water mist dust reduction bin into two spaces connected to the left and right, and a water mist nozzle is provided on the top of the space close to the air inlet side; the spray component includes a water source, a first pump, and a water mist nozzle; the cleaning component includes a second pump and a water spray head; the water spray head is provided in the space below the partition board and above the sewage outlet.

4. The dust removal device for tunnel construction according to claim 1, characterized in that: The filter is a metal filter, the outer diameter of which is smaller than the inner diameter of the filter bin, and a raised ring is provided on the inner wall of the filter bin away from the air inlet of the filter bin, the inner diameter of which is smaller than the outer diameter of the filter.

5. The dust removal device for tunnel construction according to claim 1, characterized in that: The filter partition plate is projected in the axial direction of the filter screen filter bin body in a trapezoidal tubular shape, and separates a space inside the filter screen filter bin body that is projected in the axial direction of the filter screen filter bin body in a trapezoidal shape. The top of the space is located below the rotating shaft, and the bottom is arranged at an angle. A back-blowing air outlet is provided at the bottom, and the height of one side of the back-blowing air outlet is lower.

6. The dust removal device for tunnel construction according to claim 5, characterized in that: The back-blowing assembly includes a connecting air duct and a vertical blowing pipe. The connecting air duct is arranged at the bottom of the space enclosed by the filter partition plate. The vertical blowing pipe is arranged on the side of the filter screen away from the air inlet of the filter bin body in the space enclosed by the filter partition plate, and an array-distributed air outlet is arranged on the side.

7. The dust removal device for tunnel construction according to claim 6, characterized in that: The back-blowing assembly also includes a metal brush, which is arranged on one side of the vertical blowing pipe.

8. The dust removal device for tunnel construction according to claim 5, characterized in that: When there are multiple filter screens, a back-blowing air outlet is arranged at the bottom of the filter partition plate between adjacent filter screens, and an inclined dust shield is arranged in the enclosed space. The top and side of the dust shield are fixedly connected to the filter partition plate, a gap is arranged at the bottom with the filter partition plate, and the lower part is inclined toward the air inlet side of the filter bin body.

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