Ventilation and dust removal device for tunnel construction

Abstract

The utility model discloses a ventilation and dust removal device for tunnel construction, and particularly relates to the technical field of ventilation devices, which comprises a main pipeline, one side of the main pipeline is fixedly connected with an air inlet pipeline communicated with the main pipeline, and the other side of the main pipeline is fixedly connected with an air outlet pipeline communicated with the main pipeline. The air inlet pipeline and the air outlet pipeline are correspondingly arranged outside and inside a tunnel respectively, an axial flow fan is arranged in the air outlet pipeline, a spraying assembly is arranged at the top of the main pipeline, the bottom of the main pipeline is connected with a drainage pipeline through a flange, and the bottom of the drainage pipeline is fixedly connected with a servo motor. An output shaft of the servo motor penetrates through the drainage pipeline and is fixedly connected with a rotating rod, and a water filtering assembly is arranged on the rotating rod. The spraying assembly comprises a spraying pipe, the spraying pipe is arranged at the top of the inner wall of the main pipeline, and the bottom of the spraying pipe is fixedly connected with a plurality of atomizing nozzles communicated with the spraying pipe; the technical problems that water resources are wasted and the cost is increased during tunnel ventilation and dust removal are solved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation device technology, and more specifically, to a ventilation and dust removal device for tunnel construction. Background Technology

[0002] Tunnels are engineering structures buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, and mining tunnels. During tunnel construction, it is typically necessary to supply fresh air to the tunnel interior. Currently, mechanical ventilation is the primary method used for tunnel construction ventilation.

[0003] For example, a utility model patent with publication number CN206845557U discloses a tunnel ventilation fan with automatic dust removal capability, including a ventilation duct and an exhaust fan installed inside the ventilation duct. Two or more water spray heads are evenly arranged on the inner wall of the ventilation duct, and a water supply pipe connected to the two or more water spray heads is arranged on the outer side of the ventilation duct. The water supply pipe is connected to a water storage tank through a high-pressure water pump. A solenoid valve is also installed on the water supply pipe. A dust sensor is installed inside the ventilation duct, and the dust sensor is connected to the high-pressure solenoid valve.

[0004] Although the aforementioned patent uses spraying to achieve dust settling, the water used for spraying is not effectively recycled, resulting in a waste of water resources and directly increasing the cost of ventilation and dust removal.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a ventilation and dust removal device for tunnel construction, in order to achieve a more practical purpose. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can address the waste of water resources and increased costs associated with tunnel ventilation and dust removal.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tunnel construction ventilation and dust removal device, comprising a main pipe, an air inlet pipe fixedly connected to one side of the main pipe and an air outlet pipe fixedly connected to the other side of the main pipe, the air inlet pipe and the air outlet pipe respectively corresponding to the outside and inside of the tunnel, an axial flow fan installed in the air outlet pipe, a spray assembly installed at the top of the main pipe, a drainage pipe connected to the bottom of the main pipe via a flange, a servo motor fixedly connected to the bottom of the drainage pipe, the output shaft of the servo motor passing through the drainage pipe and fixedly connected to a rotating rod, and a water filter assembly installed on the rotating rod.

[0008] In a preferred embodiment, the spray assembly includes a spray pipe disposed at the top of the inner wall of the main pipe, a plurality of atomizing nozzles fixedly connected to and communicating with the bottom of the spray pipe, and a water inlet pipe disposed at the top of the spray pipe, with one end of the water inlet pipe facing away from the spray pipe passing through the main pipe.

[0009] In a preferred embodiment, a rotary joint is provided at the other end of the water inlet pipe, and the water inlet pipe is rotatably connected to the spray pipe through the rotary joint.

[0010] In a preferred embodiment, the water filtration assembly includes a filter bucket disposed inside the drain pipe and fixedly connected to a rotating rod. The filter bucket has multiple filter holes, and a filter cloth is fixedly connected inside the filter bucket.

[0011] In a preferred embodiment, a drainage gap is provided between the filter bucket and the drainage pipe, and a conduit communicating with the outer surface of the drainage pipe is fixedly connected thereto, with a water collection tank provided at one end of the conduit.

[0012] In a preferred embodiment, a groove is provided on the inner edge of the top of the drainage pipe, a fixing ring is provided in the groove, and an expansion tube is fixedly connected to the inner side of the fixing ring, the expansion tube being located above the filter bucket.

[0013] In a preferred embodiment, a retaining seat is fixedly connected to the top of the rotating rod, a transmission rod is fixedly connected to the bottom of the spray pipe, and a positioning seat that engages with the retaining seat is fixedly connected to the bottom of the transmission rod.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. The ventilation and dust removal device for tunnel construction can atomize and spray the air entering the main duct when the air enters the main duct. The transmission cooperation between the rotating rod and the transmission rod can control the rotation of the spraying component to spray, so that the effect of using atomized water to settle dust can be more thorough.

[0016] 2. In this tunnel construction ventilation and dust removal device, the mud and water that fall freely can enter the water filter component. The water filter component can centrifugally separate the mud and water by rotating to separate the usable water in the mud and water, so as to meet the recycling and reuse of usable water. This can effectively reduce the cost of ventilation and dust removal. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a planar sectional view of the entire utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of section A in the middle;

[0020] Figure 3 This is a planar sectional view of the drainage pipe of this utility model;

[0021] Figure 4 This is a plan view of the card holder of this utility model;

[0022] Figure 5 This is a schematic diagram of the water filtration assembly of this utility model.

[0023] The attached diagram is labeled as follows: 1. Main pipe; 2. Air inlet pipe; 3. Air outlet pipe; 31. Axial flow fan; 4. Spray assembly; 41. Spray pipe; 42. Atomizing nozzle; 43. Water inlet pipe; 5. Drainage pipe; 6. Servo motor; 7. Rotating rod; 8. Water filter assembly; 81. Filter hopper; 82. Filter hole; 83. Filter cloth; 9. Rotary joint; 10. Guide tube; 11. Water collection tank; 12. Embedded groove; 13. Fixing ring; 131. Expanding tube; 14. Card seat; 15. Transmission rod; 16. Positioning seat. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See also Figures 1-5 This utility model provides a ventilation and dust removal device for tunnel construction, including a main pipe 1. An air inlet pipe 2 is fixedly connected to one side of the main pipe 1 and communicates with it. An air outlet pipe 3 is fixedly connected to the other side of the main pipe 1 and communicates with it. The air inlet pipe 2 and the air outlet pipe 3 are respectively located outside and inside the tunnel. An axial flow fan 31 is installed inside the air outlet pipe 3.

[0026] One end of the air inlet duct 2 in this application can extend to the outside of the tunnel, so that the air inlet duct 2 can introduce air from outside the tunnel under negative pressure. One end of the air outlet duct 3 can extend into the tunnel. By starting the axial flow fan 31, the air delivery action of the axial flow fan 31 can introduce outside air into the main duct 1 through the air inlet duct 2. Then the air is output to the air outlet duct 3 through the main duct 1. In this way, the axial flow fan 31 can introduce fresh air into the tunnel to achieve ventilation. The main duct 1 in this application can be set in the tunnel, and the main duct 1 can be longitudinally fixed in the tunnel by existing fasteners.

[0027] In this embodiment: a spray assembly 4 is provided at the top of the main pipe 1. The spray assembly 4 includes a spray pipe 41. The spray pipe 41 is located at the top of the inner wall of the main pipe 1. Multiple atomizing nozzles 42 are fixedly connected to the bottom of the spray pipe 41 and communicate with it. A water inlet pipe 43 is provided at the top of the spray pipe 41. The end of the water inlet pipe 43 facing away from the spray pipe 41 passes through the main pipe 1.

[0028] The water inlet pipe 43 passes through the main pipe 1 and is fixedly connected to it. One end of the water inlet pipe 43 can be connected to the existing water pump equipment using existing pipe connection technology, and the input end of the water pump can be connected to a water storage tank for storing dust removal water. In this way, when the water pump is working, it can pump the dust removal water in the water tank to the spray pipe 41. The dust removal water is then sprayed out as atomized water by the atomizing nozzle 42. When air enters the main pipe 1 through the air inlet pipe 2, the atomized water can adsorb dust and settle, thus achieving the effect of cleaning dust in the air.

[0029] In this embodiment: the bottom of the main pipe 1 is connected to a drainage pipe 5 via a flange.

[0030] The drainage pipe 5 is bolted to the main pipe 1 via a flange, which facilitates the installation and removal of the drainage pipe 5 at the bottom of the main pipe 1. In addition, a sealing ring can be placed at the flange joint to increase the sealing performance and ensure the sealing performance of the drainage pipe 5 installed on the main pipe 1.

[0031] In this embodiment: a servo motor 6 is fixedly connected to the bottom of the drainage pipe 5. The output shaft of the servo motor 6 passes through the drainage pipe 5 and is fixedly connected to a rotating rod 7. A water filter assembly 8 is provided on the rotating rod 7. The water filter assembly 8 includes a filter bucket 81. The filter bucket 81 is disposed inside the drainage pipe 5 and is fixedly connected to the rotating rod 7. Multiple filter holes 82 are opened on the filter bucket 81. A filter cloth 83 is fixedly connected inside the filter bucket 81.

[0032] In this application, the connection between the output shaft of the servo motor 6 and the drain pipe 5 can be sealed by existing sealed bearings; the filter cloth 83 is made of polyester material, which has the characteristics of wear resistance, acid and alkali resistance and good air permeability; since the drain pipe 5 is connected to the main pipe 1 through a flange, the filter cloth 83 in the filter hopper 81 can be easily disassembled when it needs to be cleaned.

[0033] When the air entering the main pipe 1 is dusted by the dust removal water, the mud and water can fall into the filter cloth 83 of the filter hopper 81. By starting the servo motor 6, the servo motor 6 can drive the filter hopper 81 to rotate through the rotating rod 7. In this way, the mud and water can be centrifugally separated on the filter cloth 83 to improve the dewatering efficiency of the usable water in the mud and water. The dewatered usable water can be discharged through the filter hole 82.

[0034] In this embodiment: a groove 12 is provided on the inner edge of the top of the drainage pipe 5, a fixing ring 13 is provided in the groove 12, and an expansion pipe 131 is fixedly connected to the inner side of the fixing ring 13. The expansion pipe 131 is located above the filter hopper 81.

[0035] In this embodiment: a drainage gap is provided between the filter hopper 81 and the drainage pipe 5, and a conduit 10 communicating with the outer surface of the drainage pipe 5 is fixedly connected, with a water collection tank 11 provided at one end of the conduit 10.

[0036] The usable water that passes through the filter hole 82 can be collected in the drainage gap and then collected in the water collection tank 11 through the conduit 10. In order to facilitate the use of the usable water in the water collection tank 11, the existing water pump equipment can also be installed on the water collection tank 11 in this application. The water pump equipment can be directly connected to the water storage tank that supplies water to the spray assembly 4, so that the water can be easily recycled for dust removal and reuse.

[0037] Before the drainage pipe 5 and the main pipe 1 are connected by a flange, the fixing ring 13 can be placed in the groove 12 of the drainage pipe 5. After the drainage pipe 5 is fastened to the main pipe 1, the position of the fixing ring 13 can be fixed. The fixing of the fixing ring 13 can make the expansion pipe 131 centered above the filter hopper 81. Since the bottom size of the expansion pipe 131 is smaller than the opening size of the top of the filter hopper 81, the mud and water that freely settles in the main pipe 1 can be completely treated in the filter hopper 81 through the expansion pipe 131.

[0038] In this embodiment: a card seat 14 is fixedly connected to the top of the rotating rod 7, a transmission rod 15 is fixedly connected to the bottom of the spray pipe 41, a positioning seat 16 that is inserted into the card seat 14 is fixedly connected to the bottom of the transmission rod 15, and a rotary joint 9 is provided at the other end of the water inlet pipe 43. The water inlet pipe 43 is rotatably connected to the spray pipe 41 through the rotary joint 9.

[0039] In this application, the shape of the card holder 14 is cross-shaped, so the positioning seat 16 is provided with a positioning groove that matches the card holder 14; the rotary joint 9 is a sealing device used to connect a fixed pipe and a rotating device. The rotary joint realizes the unidirectional transport of fluid from a stationary pipe to a rotating or reciprocating device through a sealing structure. It is commonly used in chemical, mechanical and other fields. Since the rotary joints 9 are all general standard parts or components known to those skilled in the art, their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods, so they will not be described in detail here.

[0040] By adjusting the insertion positions of the card holder 14 and the positioning seat 16 in advance, after the drainage pipe 5 is connected to the bottom of the main pipe 1 through the flange, the positioning seat 16 and the card holder 14 are inserted and corresponding. During the process of the rotating rod 7 driving the filter hopper 81 to rotate, the rotating rod 7 can drive the spray pipe 41 in sequence through the card holder 14, the positioning seat 16 and the transmission rod 15. When the spray pipe 41 rotates, the spray pipe 41 can be sealed and rotatedly connected to the water inlet pipe 43 through the rotary joint 9. This can ensure that the dust removal water is effectively transported to the spray pipe 41 through the water inlet pipe 43. In this way, the atomized water sprayed by the atomizing nozzle 42 can more comprehensively cover and settle the dust in the air.

[0041] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional known device such as a computer that is used for control, and the existing publicly available power connection technology will not be elaborated in the text.

Claims

1. A tunnel construction ventilation dust removal device comprising a main duct (1), characterized in that: One side of the main pipe (1) is fixedly connected to an air inlet pipe (2) communicating with it, and the other side of the main pipe (1) is fixedly connected to an air outlet pipe (3) communicating with it. The air inlet pipe (2) and the air outlet pipe (3) are respectively located outside and inside the tunnel. An axial flow fan (31) is installed inside the air outlet pipe (3). A spray assembly (4) is installed at the top of the main pipe (1). A drainage pipe (5) is connected to the bottom of the main pipe (1) through a flange. A servo motor (6) is fixedly connected to the bottom of the drainage pipe (5). The output shaft of the servo motor (6) passes through the drainage pipe (5) and is fixedly connected to a rotating rod (7). A water filter assembly (8) is installed on the rotating rod (7).

2. The tunnel construction ventilation and dust removal device according to claim 1, characterized in that: The spray assembly (4) includes a spray pipe (41), which is located at the top of the inner wall of the main pipe (1). The bottom of the spray pipe (41) is fixedly connected to a plurality of atomizing nozzles (42) communicating with it. The top of the spray pipe (41) is provided with a water inlet pipe (43), and the end of the water inlet pipe (43) facing away from the spray pipe (41) passes through the main pipe (1).

3. The tunnel construction ventilation and dust removal device according to claim 2, characterized in that: The other end of the water inlet pipe (43) is provided with a rotary joint (9), and the water inlet pipe (43) is rotatably connected to the spray pipe (41) through the rotary joint (9).

4. The tunnel construction ventilation and dust removal device according to claim 1, characterized in that: The water filtration assembly (8) includes a filter bucket (81), which is disposed inside the drain pipe (5) and is fixedly connected to the rotating rod (7). The filter bucket (81) has multiple filter holes (82) and a filter cloth (83) is fixedly connected inside the filter bucket (81).

5. The tunnel construction ventilation and dust removal device according to claim 4, characterized in that: A drainage gap is provided between the filter bucket (81) and the drainage pipe (5). A conduit (10) communicating with the outer surface of the drainage pipe (5) is fixedly connected. A water collection tank (11) is provided at one end of the conduit (10).

6. The tunnel construction ventilation and dust removal device according to claim 4, characterized in that: The drainage pipe (5) has an inner groove (12) at the top, and a fixing ring (13) is provided in the groove (12). An enlarged hole pipe (131) is fixedly connected to the inner side of the fixing ring (13), and the enlarged hole pipe (131) is located above the filter bucket (81).

7. A tunnel construction ventilation and dust removal device according to claim 2, characterized in that: The top of the rotating rod (7) is fixedly connected to a card seat (14), the bottom of the spray pipe (41) is fixedly connected to a transmission rod (15), and the bottom of the transmission rod (15) is fixedly connected to a positioning seat (16) that is inserted into the card seat (14).

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