Ventilation device for tunnel construction

Abstract

The utility model discloses a ventilation device for tunnel construction, and relates to the technical field of ventilation equipment. Comprising a filter box, an air inlet pipe and an air outlet pipe, a filter insertion plate is movably inserted into the filter box, and a filter screen is fixed to the bottom of the filter insertion plate; a limiting assembly is arranged at the top of the filtering insertion plate, and the filtering insertion plate is vertically limited through the limiting assembly; a cleaning assembly is arranged between the air inlet pipe and the filtering insertion plate and comprises a driving piece and a cleaning piece. The filter screen cleaning device is provided with the driving piece and the cleaning piece, the driving piece drives the sliding block to move up and down along the rod body of the bidirectional lead screw, so that the filter screen is scraped through the bristles moving up and down, dust attached to the surface of the filter screen is scraped away, blockage of the filter screen is reduced, the cleaning frequency of the filter screen can be effectively reduced, and the cleaning efficiency of the filter screen is improved. And a lot of manpower is saved.

Description

Technical Field

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

[0002] The Chinese utility model patent, authorization announcement number CN 220513695 U discloses a ventilation device for shield tunnel construction, which has the following advantages: when replacing the filter plate, there is no need to stop the operation of the ventilation device, and several filter plates on the filter box can be pulled out and replaced. When replacing, one hand first pushes the push block and the plug plate to move in the slide slot, so that the plug plate is pulled out from the second slot, and the other hand pulls out the old filter plate. When the old filter plate is pulled out, stop pushing the push block, and the plug plate can be pushed under the action of the spring elastic force, so that the plug plate is inserted into the first slot. The slot can be sealed by the plug plate to prevent impurities in the outside air from entering from the slot.

[0003] The above device still has the following defects in practical application:

[0004] The dust generated after tunnel blasting is large and the particles are large. When working for a long time, the dust can easily clog the filter, so the filter needs to be cleaned frequently, which wastes a lot of manpower. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel construction ventilation device to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a tunnel construction ventilation device, comprising a filter box, an air inlet pipe and an air outlet pipe, wherein a filter plug-in is movably inserted in the filter box, and a filter screen is fixed at the bottom of the filter plug-in;

[0007] A limit assembly is provided on the top of the filter plug plate, and the filter plug plate is vertically limited by the limit assembly;

[0008] A cleaning assembly is arranged between the air inlet pipe and the filter plug plate, the cleaning assembly includes a driving member and a cleaning member, the cleaning member includes a bidirectional screw rod, a limit rod and a slider, the slider and the bidirectional screw rod are movably screwed, and the limit rod and the slider are movably plugged;

[0009] Brush bristles are fixed on the side of the slider facing the filter screen, and the slider is driven by a driving member to move up and down along the rod body of the bidirectional screw rod.

[0010] Preferably, the driving member comprises a transverse rotating shaft and a bearing, the transverse rotating shaft is fixed to the inner ring of the bearing, the outer ring of the bearing is fixed to the filter box via a connecting rod, and a propeller and a first bevel gear are fixed to both sides of the transverse rotating shaft respectively;

[0011] A vertical rotating shaft is rotatably connected to the body of the filter box, and a first gear and a second bevel gear are respectively fixed to the top and bottom ends of the vertical rotating shaft, and the second bevel gear is meshed with the first bevel gear;

[0012] A second gear is fixed to the top end of the bidirectional screw rod, and the second gear is meshed with the first gear.

[0013] Preferably, the air inlet pipe includes a first bell tube and a second bell tube, the diameters of the air inlets of the first bell tube and the second bell tube are both larger than the diameters of the air outlets thereof, and the propeller is located outside the air outlet of the second bell tube.

[0014] Preferably, the limit assembly includes a limit block, a side of the limit block is provided with a transverse groove and a vertical groove, an insertion block is movably inserted in the transverse groove, a plurality of second springs are fixed between the insertion block and the side wall of the transverse groove, a push plate is fixed on the top of the insertion block, and the push plate is located in the vertical groove.

[0015] Preferably, a slope is provided on the side surface of the plug block.

[0016] Preferably, a rectangular groove is formed at the bottom of the filter box, a movable plate is movably connected in the rectangular groove, a plurality of first springs are fixed between the movable plate and the bottom wall of the rectangular groove, and the bottom end of the filter plug plate is pressed against the top end of the movable plate.

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

[0018] The tunnel construction ventilation device is provided with a driving part and a cleaning part. The driving part drives the slider to move up and down along the rod body of the bidirectional screw rod, so that the filter is scraped by the bristles moving up and down, thereby scraping off the dust attached to the surface of the filter, reducing the blockage of the filter, thereby effectively reducing the frequency of cleaning the filter and saving a lot of manpower.

[0019] At the same time, the driving part is driven by the wind pressure at the inlet, and no external power supply is required, thereby effectively saving resources.

[0020] Furthermore, a limit assembly and a first spring are provided. The limit assembly can fix the filter. The limit assembly has a simple structure and can prevent the filter from detaching from the filter box due to vibration of the box body when the ventilation device is working. In addition, after the limit assembly releases the restriction on the filter, the filter moves upward under the elastic force of the first spring, thereby facilitating the later disassembly of the filter, further improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a left side axial view of the utility model;

[0022] Figure 2 It is a half-section diagram of the utility model;

[0023] Figure 3 It is a half-section view of the limiting component of the utility model.

[0024] In the figure: 1. filter box; 2. air inlet pipe; 201. first horn pipe; 202. second horn pipe; 3. air outlet pipe; 401. filter plug plate; 402. filter screen; 403. first spring; 404. movable plate; 5. limit assembly; 501. limit block; 502. plug block; 503. second spring; 504. push plate; 6. cleaning assembly; 601. horizontal shaft; 602. propeller; 603. bearing; 604. first bevel gear; 605. vertical shaft; 606. second gear; 607. bidirectional screw rod; 608. slider. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a tunnel construction ventilation device, comprising a filter box 1, an air inlet pipe 2 and an air outlet pipe 3, the air outlet pipe 3 is connected to an air pump, after the dust in the air in the tunnel is filtered through the filter box 1, the air is discharged through the air outlet pipe 3, thereby achieving purification of the air in the tunnel, a filter plug-in plate 401 is movably plugged in the filter box 1, a filter screen 402 for filtering dust in the air is fixed at the bottom of the filter plug-in plate 401, a limiting component 5 is arranged on the top of the filter plug-in plate 401, the filter plug-in plate 401 is vertically limited by the limiting component 5, and the filter plug-in plate 401 is vertically limited by the limiting component 5. 2 and the filter plug plate 401 is provided with a cleaning component 6, wherein the cleaning component 6 includes a driving member and a cleaning member, the cleaning member includes a bidirectional screw rod 607, a limiting rod and a slider 608, the slider 608 and the bidirectional screw rod 607 are movably screwed, the limiting rod and the slider 608 are movably plugged, a brush is fixed on the side of the slider 608 facing the filter 402, the slider 608 is driven by the driving member to move up and down along the rod body of the bidirectional screw rod 607, so that the filter 402 is scraped by the bristles moving up and down, so that the dust attached to the surface of the filter 402 is scraped off, and the clogging of the filter 402 is reduced.

[0027] like Figure 2As shown, the driving member includes a transverse rotating shaft 601 and a bearing 603, wherein the transverse rotating shaft 601 is fixed to the inner ring of the bearing 603, and the outer ring of the bearing 603 is fixed to the filter box 1 through a connecting rod, thereby achieving stable support for the transverse rotating shaft 601, and a propeller 602 and a first bevel gear 604 are fixed on both sides of the transverse rotating shaft 601, and the propeller 602 is located outside the air outlet of the air inlet pipe 2;

[0028] A vertical rotating shaft 605 is rollingly connected to the body of the filter box 1, and the top rod bodies of the vertical rotating shaft 605 and the bidirectional screw rod 607 both extend out of the filter box 1. A first gear and a second bevel gear are respectively fixed to the top and bottom ends of the vertical rotating shaft 605, and the second bevel gear is meshed with the first bevel gear 604. In addition, a second gear 606 is fixed to the top of the bidirectional screw rod 607, and the second gear 606 is meshed with the first gear.

[0029] The air in the tunnel enters the filter box 1 through the air inlet pipe 2, and the wind pressure is applied to the blades of the propeller 602, so that the propeller 602 drives the horizontal shaft 601 and the first bevel gear 604 to rotate, and then drives the vertical shaft 605 and the first gear to rotate through the second bevel gear, and drives the bidirectional screw 607 to rotate through the second gear 606, and finally the slider 608 and the bristles fixed on the side of the slider 608 move up and down along the rod body of the bidirectional screw 607, and the bristles scrape the filter 402, thereby scraping off the dust attached to the surface of the filter 402 and reducing the blockage of the filter 402.

[0030] To increase the wind pressure, so that the propeller 602 can rotate stably, as Figure 2 As shown, the air inlet pipe 2 includes a first trumpet tube 201 and a second trumpet tube 202. The diameters of the air inlets of the first trumpet tube 201 and the second trumpet tube 202 are both larger than the diameters of their air outlets, and the diameter of the air outlet of the second trumpet tube 202 is smaller than the diameter of the air outlet of the first trumpet tube 201. In this way, the external wind is gathered through the first trumpet tube 201, and then the wind pressure is increased after the diameter is changed through the second trumpet tube 202. The high wind pressure is applied to the blades of the propeller 602, thereby driving the propeller 602 to rotate quickly and stably.

[0031] It can be known that the driving member can also be provided through other driving components, such as a motor, etc., which are arranged on the top of the filter box 1 .

[0032] To prevent the filter screen 402 from being separated from the filter box 1 due to vibration of the box body when the ventilation device is working, Figure 1 and Figure 3As shown, the limit assembly 5 includes a limit block 501, and a horizontal groove and a vertical groove are opened on the side of the limit block 501, wherein an insertion block 502 is movably inserted in the horizontal groove, a plurality of second springs 503 are fixed between the insertion block 502 and the side wall of the horizontal groove, and a push plate 504 for pushing the insertion block 502 is fixed on the top of the insertion block 502, and the push plate 504 is located in the vertical groove.

[0033] In addition, in order to facilitate the insertion of the filter screen 402 into the filter box 1, there is no need to manually push the push plate 504, thereby facilitating installation. A slope is provided on the side of the plug block 502, and a rectangular groove is provided at the bottom of the filter box 1. A movable plate 404 is movably connected in the rectangular groove, and a plurality of first springs 403 are fixed between the movable plate 404 and the bottom wall of the rectangular groove, so that the bottom end of the filter plug plate 401 is squeezed against the top end of the movable plate 404.

[0034] As a supplement to this solution, during installation, the filter screen 402 is inserted into the filter box 1. At this time, the bottom end of the filter screen 402 is pressed against the top end of the plug block 502, and the plug block 502 moves along the inner side of the transverse groove, and the second spring 503 is compressed and contracted. When the filter screen 402 is inserted into the filter box 1, the first spring 403 is compressed and contracted, and the bottom of the filter screen 402 is located in the rectangular groove. At this time, the second spring 503 drives the plug block 502 to reset, and the bottom end surface of the plug block 502 is pressed against the top end surface of the filter plug plate 401, thereby limiting the filter screen 402. When cleaning the filter screen 402, the push plate 504 is pulled by hand until the bottom end surface of the plug block 502 is separated from the top end surface of the filter plug plate 401, and then the filter screen 402 moves upward under the elastic force of the first spring 403, and finally the staff removes the filter plug plate 401 from the filter box 1 through the handle installed at the top end of the filter plug plate 401.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A tunnel construction ventilation device, comprising a filter box (1), an air inlet pipe (2) and an air outlet pipe (3), characterized in that: A filter plug-in plate (401) is movably inserted in the filter box (1), and a filter screen (402) is fixed at the bottom of the filter plug-in plate (401); A limit assembly (5) is provided on the top of the filter plug plate (401), and the filter plug plate (401) is vertically limited by the limit assembly (5); A cleaning assembly (6) is provided between the air inlet pipe (2) and the filter plug plate (401), the cleaning assembly (6) comprising a driving member and a cleaning member, the cleaning member comprising a bidirectional screw rod (607), a limiting rod and a slider (608), the slider (608) and the bidirectional screw rod (607) are movably screwed, and the limiting rod and the slider (608) are movably plugged; Brush bristles are fixed on the side of the slider (608) facing the filter screen (402), and the slider (608) is driven by a driving member to move up and down along the rod body of the bidirectional screw rod (607).

2. A tunnel construction ventilation device according to claim 1, characterized in that: The driving member comprises a transverse rotating shaft (601) and a bearing (603); the transverse rotating shaft (601) is fixed to the inner ring of the bearing (603); the outer ring of the bearing (603) is fixed to the filter box (1) via a connecting rod; a propeller (602) and a first bevel gear (604) are respectively fixed to both sides of the transverse rotating shaft (601); A vertical rotating shaft (605) is rollingly connected to the body of the filter box (1), a first gear and a second bevel gear are respectively fixed to the top and bottom ends of the vertical rotating shaft (605), and the second bevel gear is meshed with the first bevel gear (604); A second gear (606) is fixed to the top end of the bidirectional screw rod (607), and the second gear (606) is meshed with the first gear.

3. A tunnel construction ventilation device according to claim 2, characterized in that: The air inlet pipe (2) comprises a first bell tube (201) and a second bell tube (202); the diameters of the air inlets of the first bell tube (201) and the second bell tube (202) are both larger than the diameters of their air outlets; and the propeller (602) is located outside the air outlet of the second bell tube (202).

4. A tunnel construction ventilation device according to claim 1, characterized in that: The limiting assembly (5) comprises a limiting block (501), a side of the limiting block (501) is provided with a transverse groove and a vertical groove, an insert block (502) is movably inserted in the transverse groove, a plurality of second springs (503) are fixed between the insert block (502) and the side wall of the transverse groove, a push plate (504) is fixed at the top of the insert block (502), and the push plate (504) is located in the vertical groove.

5. A tunnel construction ventilation device according to claim 4, characterized in that: The side surface of the insert block (502) is provided with a slope.

6. A tunnel construction ventilation device according to claim 1, characterized in that: A rectangular groove is provided at the bottom of the filter box (1), a movable plate (404) is movably connected in the rectangular groove, a plurality of first springs (403) are fixed between the movable plate (404) and the bottom wall of the rectangular groove, and the bottom end of the filter plug plate (401) is pressed against the top end of the movable plate (404).

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