A new type of roadway efficient drainage device

Abstract

The application relates to the roadway drainage field and discloses a novel roadway efficient drainage device, which comprises an outer through pipe, a water inlet pipe, a sewage storage bin, a drainage port and a variable-diameter port, an inner through pipe, an air inlet pipe and an air outlet pipe, and a sewage port one is arranged on the outer surface of the water inlet pipe; the inner through pipe is composed of the air inlet pipe and the air outlet pipe, and a sewage port two corresponding to the sewage port one is arranged on the outer surface of the air inlet pipe. The device utilizes the introduced high-pressure wind to generate negative pressure in the air inlet pipe inner cavity, and sewage is sucked through the sewage port one and the sewage port two, so that the sewage continuously flows to the left along the air outlet pipe and the sewage storage bin, the flow rate is increased when passing through the variable-diameter port, and finally the sewage is discharged along the drainage port. The device has the advantages that: the volume is small, the device is more flexible to deploy than a wind pump, the narrow space inside the device utilizes the Bernoulli principle to significantly improve the drainage efficiency, the sewage port one and the sewage port two are designed to enable the device to have a certain filtering function, and the overall practicability is enhanced.

Description

Technical Field

[0001] This application relates to the field of tunnel drainage technology, and in particular to a novel high-efficiency tunnel drainage device. Background Technology

[0002] When the drainage team is conducting tunnel excavation, as the working face extends forward, the water usage for support increases, and water seepage from the floor causes a large amount of water to accumulate in low-lying areas of the tunnel. This accumulation is exacerbated by the drainage team's drilling operations, sometimes even leading to flooding of the conveyor belt and making it impassable for pedestrians, resulting in poor safety and quality standards in the tunnel. In existing technologies, air pumps are generally used for auxiliary drainage. However, due to the limited space in the tunnel, air pumps are large, inconvenient to carry manually, time-consuming, labor-intensive, and lack flexible deployment, and are difficult to operate and maintain. Their use in environments such as bottom drainage tunnels is very inconvenient. Therefore, this application aims to design a new type of high-efficiency tunnel drainage device with advantages of small size, easy flexible deployment, and low maintenance costs, thereby solving the inconveniences of existing tunnel drainage technologies. Summary of the Invention

[0003] This application proposes a novel high-efficiency drainage device for roadways, which has the advantages of high drainage efficiency, small equipment size and easy maintenance, in order to solve the problem that the existing air pumps are too large and inconvenient to install and maintain in roadways.

[0004] To achieve the above objectives, this application adopts the following technical solution: a novel high-efficiency drainage device for roadways, comprising: An external pipe, which consists of a water inlet pipe, a sewage storage tank, a drain outlet and a reducing port, and a sewage outlet is provided on the outer surface of the water inlet pipe; The inner pipe consists of an air inlet pipe and an air outlet pipe. The outer surface of the air inlet pipe has a second sewage outlet corresponding to the first sewage outlet. The exhaust pipe is fixedly installed inside the water inlet pipe. The inner walls of the inner pipe and the outer pipe are fitted with an equidistant gap. The inner diameter of the variable diameter port is smaller than the inner diameter of the sewage storage tank and the drain outlet.

[0005] Preferably, the sewage outlet one and sewage outlet two are each set into several groups, and are distributed equidistantly around the outer surface of the water inlet pipe and the air inlet pipe, respectively, and the axis of each sewage outlet one coincides with the axis of a corresponding sewage outlet two.

[0006] Preferably, the right end of the air inlet pipe is used to connect to an external air pump, and the left end of the exhaust pipe is connected to the inner cavity of the sewage storage tank.

[0007] Preferably, a telescopic rod is hinged to the bottom of the inner wall of the exhaust pipe, and a piston is hinged to the telescopic end of the telescopic rod. The piston is sealed and sleeved on the left end of the inner wall of the air inlet pipe. A limiting groove is formed on the left side of the inner wall of the air inlet pipe. A spring and a limiting cylinder are movably sleeved inside the limiting groove. The two ends of the spring are elastically connected to the limiting groove and the limiting cylinder, respectively, and are used to limit the movement of the limiting cylinder to the left.

[0008] Preferably, the telescopic rod includes a sealing cylinder hinged to the bottom of the inner wall of the exhaust pipe. A second spring and a connecting rod are movably sleeved inside the sealing cylinder. One end of the connecting rod is hinged to a piston. The connecting rod is elastically supported in the sealing cylinder by the second spring, which is used to limit the connecting rod from retracting into the inner cavity of the sealing cylinder.

[0009] Preferably, the right end of the piston has a pointed conical structure, and the right end of the piston is adapted to abut against the limiting cylinder.

[0010] Preferably, the inclination angle of the joint between the air inlet pipe and the air outlet pipe is consistent with the inclination angle of the cone portion of the piston, and the diameter of the piston is less than or equal to the difference between the inner diameters of the air outlet pipe and the air inlet pipe.

[0011] Preferably, the outer diameter of the water inlet pipe is smaller than the outer diameter of the sewage storage tank. An auxiliary cylinder is fixedly provided on the outer surface of the water inlet pipe. The auxiliary cylinder includes an outer cylinder with an outer diameter equal to that of the sewage storage tank. Multiple sets of water inlets are connected between the outer cylinder and the air inlet pipe, and the water inlets are connected to the sewage outlet.

[0012] The beneficial effects of this invention are as follows: 1. This device has been redesigned with an external pipe on the outside and an internal pipe on the inside, achieving efficient drainage in narrow areas of the tunnel using negative pressure generated by high-pressure air. To achieve this, the device is equipped with an external pipe consisting of a water inlet pipe, a sewage storage tank, a drainage outlet, and a variable diameter outlet. The variable diameter outlet is smaller than the drainage outlet and the sewage storage tank. An internal pipe is fixed inside the water inlet pipe, and corresponding sewage outlets one and two are opened on the outside of the air inlet pipe and the water inlet pipe, respectively. An air pump is connected to the right end of the air inlet pipe. The high-pressure air introduced generates negative pressure in the air inlet pipe, and sewage is drawn in through sewage outlets one and two. The sewage flows continuously to the left along the exhaust pipe and the sewage storage tank, increasing the flow velocity when passing through the variable diameter outlet, and finally being discharged through the drainage outlet. The advantages of this design are: small size, easier and more flexible deployment than an air pump, significant improvement in drainage efficiency by utilizing Bernoulli's principle in the narrow space inside the device, and the design of sewage outlets one and two also gives the device a certain filtration function, enhancing its overall practicality.

[0013] 2. Since sewage enters the device through sewage inlet 1 and sewage inlet 2, these inlets will inevitably become clogged with impurities after prolonged operation. To address this maintenance issue, a piston is installed at the left end of the air inlet pipe for sealing, and a set of telescopic rods is hinged inside the exhaust pipe. Spring 2 and a connecting rod inside the telescopic rods apply elastic pressure to the piston to the right. When the device is ventilating, the piston first blocks the left end opening of the air inlet pipe, thus changing the path of the high-pressure air inside the device. At this time, the high-pressure air will flow outwards through sewage inlet 1 via sewage inlet 2, thereby ventilating sewage inlet 1. The device backflushes and cleans impurities in sewage outlet 2. When the piston moves to the left under the action of air pressure and disengages from the inner wall of the air inlet pipe, the air inlet pipe opens. The high-pressure air carries the sewage through the limiting cylinder and piston for normal drainage, while the piston moves to the bottom of the exhaust pipe. At this time, the limiting cylinder moves to the left to its extreme position and can be limited by abutting against the top of the piston. The high-pressure air and sewage only need to overcome the elastic force of the compressed spring to keep the left side opening of the air inlet pipe open. Moreover, the device performs a self-cleaning once every time it starts working, effectively preventing sewage outlet 1 and sewage outlet 2 from clogging and significantly reducing maintenance costs. Attached Figure Description

[0014] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0015] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram showing the separation of the outer tube, inner tube, telescopic rod, and piston of the present invention; Figure 2 This is a front view diagram of the overall structure of the present invention; Figure 3 This is a front sectional view of the overall structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a top sectional view of the overall structure of the present invention; Figure 6 This is a schematic diagram of the auxiliary cylinder after optional installation in this invention; Figure 7 This is a partial axial section diagram of the auxiliary cylinder after it is selected for the present invention.

[0016] The components are as follows: 1. External pipe; 11. Water inlet pipe; 12. Sewage storage tank; 13. Drain outlet; 14. Variable diameter outlet; 15. Sewage outlet one; 2. Internal pipe; 21. Air inlet pipe; 22. Air outlet pipe; 23. Sewage outlet two; 24. Limiting groove; 25. Spring one; 26. Limiting cylinder; 3. Auxiliary cylinder; 31. Outer cylinder; 32. Water inlet; 4. Telescopic rod; 41. Sealing cylinder; 42. Spring two; 43. Connecting rod; 5. Piston. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] Please see Figures 1-7 This embodiment discloses a novel high-efficiency drainage device for roadways, comprising: The external pipe 1 consists of a water inlet pipe 11, a sewage storage tank 12, a drain outlet 13, and a reducing outlet 14. A sewage outlet 15 is provided on the outer surface of the water inlet pipe 11. The inner pipe 2 is composed of an air inlet pipe 21 and an air outlet pipe 22. The outer surface of the air inlet pipe 21 is provided with a sewage outlet 23 corresponding to the sewage outlet 15. The exhaust pipe 22 is fixedly installed inside the water inlet pipe 11. The inner wall of the inner pipe 2 and the outer pipe 1 are equidistantly fitted. The inner diameter of the variable diameter port 14 is smaller than the inner diameter of the sewage storage tank 12 and the drain outlet 13. A telescopic rod 4 is hinged to the bottom of the inner wall of the exhaust pipe 22. A piston 5 is hinged to the telescopic end of the telescopic rod 4. The piston 5 is sealed on the left end of the inner wall of the air inlet pipe 21. A limiting groove 24 is opened on the left side of the inner wall of the air inlet pipe 21. A spring 25 and a limiting cylinder 26 are movably sleeved inside the limiting groove 24. The two ends of the spring 25 are elastically connected to the limiting groove 24 and the limiting cylinder 26 respectively, and are used to limit the movement of the limiting cylinder 26 to the left. This device has been redesigned and reassembled, with an external pipe 1 connected to the inner pipe 2 via a gap fit. This achieves efficient drainage in narrow areas of the roadway using negative pressure generated by high-pressure air. To achieve this, the device is equipped with an external pipe 1, which consists of a water inlet pipe 11, a sewage storage tank 12, a drain outlet 13, and a reducer 14. The reducer 14 is smaller than the drain outlet 13 and the sewage storage tank 12. An inner pipe 2 is fixedly installed inside the water inlet pipe 11, and corresponding sewage outlets 23 and 15 are respectively opened on the outside of the air inlet pipe 21 and the water inlet pipe 11. An external air pump is connected to the right end of the air inlet pipe 21. The high-pressure air introduced generates negative pressure in the inner cavity of the air inlet pipe 21, and sewage is drawn in through sewage outlet 15 and sewage outlet 23. The sewage flows continuously to the left along the exhaust pipe 22 and the sewage storage tank 12. The flow velocity increases when passing through the variable diameter port 14, and finally it is discharged through the drain outlet 13. The advantages of this design are: small size, easier to deploy than air pumps, and the use of Bernoulli's principle to significantly improve drainage efficiency in the narrow space inside the device. In addition, the design of sewage outlet 15 and sewage outlet 23 also gives the device a certain filtration function, which enhances the overall practicality.

[0019] Since sewage enters the device through sewage inlet 15 and sewage inlet 23, these inlets will inevitably become clogged with impurities after prolonged operation. To address this maintenance issue, a piston 5 is installed at the left end of the air inlet pipe 21 for sealing, and a set of telescopic rods 4 is hinged inside the exhaust pipe 22. Spring 2 42 and connecting rod 43 inside the telescopic rods 4 apply elastic pressure to the piston 5 to the right. When the device is ventilating, the piston 5 first blocks the left opening of the air inlet pipe 21, thus changing the path of the high-pressure air inside the device. At this time, the high-pressure air will flow outward through sewage inlet 23 into sewage inlet 15, thereby ventilating sewage inlet 15. Impurities in sewage outlet 15 and sewage outlet 23 are backflushed and cleaned. When piston 5 moves to the left under the action of wind pressure and disengages from the inner wall of inlet pipe 21, inlet pipe 21 opens. High-pressure air carries sewage through limiting cylinder 26 and piston 5 for normal drainage. Meanwhile, piston 5 moves to the bottom of exhaust pipe 22. At this time, limiting cylinder 26 moves to the left to its limit position and can be limited by abutting against the top of piston 5. High-pressure air and sewage only need to overcome the elastic force of compressed spring 25 to keep the left side opening of inlet pipe 21 open. Moreover, the device performs self-cleaning once every time it starts working, effectively preventing sewage outlet 15 and sewage outlet 23 from clogging and significantly reducing maintenance costs.

[0020] In this embodiment, sewage outlet 15 and sewage outlet 23 are each set into several groups, and are distributed equidistantly around the outer surface of water inlet pipe 11 and air inlet pipe 21. The axis of each sewage outlet 15 coincides with the axis of a corresponding sewage outlet 23. like Figure 1, Figure 2 and Figure 3 As shown, the number and position of sewage outlet 15 and sewage outlet 23 correspond to each other, that is, the axes of each pair of sewage outlet 15 and sewage outlet 23 coincide. This design helps to absorb sewage into the air inlet pipe 21 and discharge it. Moreover, when using high-pressure air backflushing, it can simultaneously and quickly solve the blockage problem of sewage outlet 15 and sewage outlet 23.

[0021] In this embodiment, the right end of the air inlet pipe 21 is used to connect an external air pump, and the left end of the exhaust pipe 22 is connected to the inner cavity of the sewage storage tank 12. like Figure 3 As shown, the right end of the air inlet pipe 21 is connected to an external air pump, which introduces high-pressure air into the device, thereby using the negative pressure formed in the air inlet pipe 21, sewage outlet 15 and sewage outlet 23 to assist in the drainage of the roadway.

[0022] In this embodiment, the telescopic rod 4 includes a sealing cylinder 41 hinged to the bottom of the inner wall of the exhaust pipe 22. A second spring 42 and a connecting rod 43 are movably sleeved inside the sealing cylinder 41. One end of the connecting rod 43 is hinged to the piston 5. The connecting rod 43 is elastically supported in the sealing cylinder 41 by the second spring 42. The second spring 42 is used to limit the connecting rod 43 from retracting into the inner cavity of the sealing cylinder 41. like Figure 1 and Figure 3 As shown, the connecting rod 43 is hinged to the piston 5. When the piston 5 moves to the left under the action of wind pressure, it will simultaneously drive the sealing cylinder 41 and the connecting rod 43 to rotate, compressing the second spring 42. Before the piston 5 leaves the inside of the air inlet pipe 21, it can restrict the path of the high-pressure air, so that it can clean the sewage outlet 23 and sewage outlet 15 through backflushing.

[0023] In this embodiment, the right end of the piston 5 has a pointed conical structure, and the right end of the piston 5 is adapted to abut against the limiting cylinder 26. like Figure 3 and Figure 4 As shown, the cone structure of piston 5 is designed to fit and abut against the limiting cylinder 26 and the joint between the air inlet pipe 21 and the air outlet pipe 22. When the limiting cylinder 26 moves to the left, it can move directly to the top of piston 5, thereby locking piston 5 from resetting upwards by using the limiting effect, reducing the energy used by the high-pressure air to maintain the contraction of the telescopic rod 4. When piston 5 resets, its cone design can enter the air inlet pipe 21 more smoothly.

[0024] In this embodiment, the inclination angle of the joint between the air inlet pipe 21 and the air outlet pipe 22 is consistent with the inclination angle of the cone part of the piston 5, and the diameter of the piston 5 is less than or equal to the difference between the inner diameter of the air outlet pipe 22 and the inner diameter of the air inlet pipe 21. like Figure 3As shown, when piston 5 is fully inside the bottom of the inner wall of exhaust pipe 22, it is just below the bottom of limit cylinder 26. At this time, limit cylinder 26 directly locks piston 5 by limiting it, thereby reducing the energy consumption of the device in maintaining piston 5 inside exhaust pipe 22. Moreover, when piston 5 is fully inside exhaust pipe 22, it does not affect the sewage discharge efficiency at all.

[0025] In this embodiment, the outer diameter of the water inlet pipe 11 is smaller than the outer diameter of the sewage storage tank 12. An auxiliary cylinder 3 is fixedly installed on the outer surface of the water inlet pipe 11. The auxiliary cylinder 3 includes an outer cylinder 31 with an outer diameter equal to that of the sewage storage tank 12. Multiple sets of water inlets 32 are connected between the outer cylinder 31 and the air inlet pipe 21, and the water inlets 32 are connected to the sewage outlet 15. An auxiliary cylinder 3 can be installed on the outside of the water inlet pipe 11. The outer cylinder 31 and the sewage storage tank 12 have the same outer diameter to cover the low-lying sewage area that may not be reached outside the water inlet pipe 11. Sewage can enter the device through the inlet 32. During the backwash cleaning stage, the inlet 32 ​​can also be cleaned. This part can be selected according to the actual site conditions.

[0026] Working principle: When in operation, this device can be placed in low-lying, waterlogged areas inside the tunnel. The air inlet pipe 21 can be connected to an external air pump, continuously introducing high-pressure air into the device. Figure 3 As shown, the high-pressure air enters the inner cavity of the air inlet pipe 21 to the left along the air inlet pipe 21. At this time, the piston 5 blocks the connection between the air inlet pipe 21 and the exhaust pipe 22. While continuously pushing the piston 5 and the limiting cylinder 26 to the left, most of the high-pressure air is discharged to the outside along the sewage outlet 23 and sewage outlet 15. The high-pressure air backwashes and cleans the sewage outlet 15 and sewage outlet 23, avoiding possible blockage of the spring 1 25 and sewage outlet 23. Then, when piston 5 moves to the left, it pushes telescopic rod 4 to retract and rotate as a whole. Limiting cylinder 26 approaches synchronously under the action of high-pressure air. When piston 5 is disengaged from the air inlet pipe 21, the left opening of air inlet pipe 21 opens, and the direction of high-pressure air changes instantly. That is, it enters the exhaust pipe 22, sewage storage tank 12, variable diameter port 14 and drain outlet 13 along the axis of air inlet pipe 21 to the left. This creates a negative pressure between sewage outlet 23 and sewage outlet 15. The direction of this negative pressure is from sewage outlet 15 to sewage outlet 23. This draws sewage into air inlet pipe 21 along sewage outlet 15 and sewage outlet 23, and after passing through exhaust pipe 22 and sewage storage tank 12, it enters variable diameter port 14 and is accelerated to spray out along drain outlet 13, thus completing the drainage. Finally, under the combined action of the high-pressure air and the water flow, the limiting cylinder 26 moves to the left to its limit position, so that the piston 5 is located at the bottom of the limiting cylinder 26 and abuts against each other. The spring 25 is compressed and the piston 5 is restricted to the bottom of the inner wall of the exhaust pipe 22. When the device stops working, the limiting cylinder 26 automatically resets under the left and right pressure of the spring 25, and the piston 5 resets again under the action of the telescopic rod 4, and seals the left end opening of the air inlet pipe 21 again. When the device performs drainage work again, the above steps are repeated, and the sewage outlet 23 and sewage outlet 15 are backflushed and cleaned. Additionally, an auxiliary cylinder 3 can be installed on the outside of the water inlet pipe 11. The outer cylinder 31, with its equal outer diameter to the sewage storage tank 12, can cover low-lying sewage areas that might otherwise be missed by the outside of the water inlet pipe 11. Figure 7 As shown, wastewater can enter the device through inlet 32.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A novel high-efficiency drainage device for roadways, characterized in that, include: The external pipe (1) is composed of a water inlet pipe (11), a sewage storage tank (12), a drain outlet (13) and a variable diameter outlet (14). A sewage outlet (15) is opened on the outer surface of the water inlet pipe (11). The inner pipe (2) is composed of an air inlet pipe (21) and an air outlet pipe (22). The outer surface of the air inlet pipe (21) is provided with a sewage outlet (23) corresponding to the sewage outlet (15). The exhaust pipe (22) is fixedly installed inside the water inlet pipe (11). The inner pipe (2) and the inner wall of the outer pipe (1) are equidistantly fitted. The inner diameter of the variable diameter port (14) is smaller than the inner diameter of the sewage storage tank (12) and the drain outlet (13).

2. The novel high-efficiency drainage device for roadways according to claim 1, characterized in that, The sewage outlet one (15) and sewage outlet two (23) are each set into several groups and are distributed equidistantly around the outer surface of the water inlet pipe (11) and the air inlet pipe (21), respectively. The axis of each sewage outlet one (15) coincides with the axis of a corresponding sewage outlet two (23).

3. A novel high-efficiency drainage device for roadways according to claim 2, characterized in that, The right end of the air inlet pipe (21) is used to connect to an external air pump, and the left end of the exhaust pipe (22) is connected to the inner cavity of the sewage storage tank (12).

4. A novel high-efficiency drainage device for roadways according to claim 1, characterized in that, A telescopic rod (4) is hinged to the bottom of the inner wall of the exhaust pipe (22). A piston (5) is hinged to the telescopic end of the telescopic rod (4). The piston (5) is sealed and fitted on the left end of the inner wall of the air inlet pipe (21). A limiting groove (24) is opened on the left side of the inner wall of the air inlet pipe (21). A spring (25) and a limiting cylinder (26) are movably fitted inside the limiting groove (24). The two ends of the spring (25) are elastically connected to the limiting groove (24) and the limiting cylinder (26) respectively, and are used to limit the movement of the limiting cylinder (26) to the left.

5. A novel high-efficiency drainage device for roadways according to claim 4, characterized in that, The telescopic rod (4) includes a sealing cylinder (41) hinged to the bottom of the inner wall of the exhaust pipe (22). The sealing cylinder (41) is movably fitted with a second spring (42) and a connecting rod (43). One end of the connecting rod (43) is hinged to the piston (5). The connecting rod (43) is elastically supported in the sealing cylinder (41) by the second spring (42). The second spring (42) is used to limit the connecting rod (43) from retracting into the inner cavity of the sealing cylinder (41).

6. A novel high-efficiency drainage device for roadways according to claim 5, characterized in that, The right end of the piston (5) has a pointed conical structure, and the right end of the piston (5) is adapted to and abuts against the limiting cylinder (26).

7. A novel high-efficiency drainage device for roadways according to claim 6, characterized in that, The inclination angle of the joint between the air inlet pipe (21) and the air outlet pipe (22) is consistent with the inclination angle of the cone part of the piston (5), and the diameter of the piston (5) is less than or equal to the difference between the inner diameter of the air outlet pipe (22) and the air inlet pipe (21).

8. A novel high-efficiency drainage device for roadways according to claim 7, characterized in that, The outer diameter of the water inlet pipe (11) is smaller than the outer diameter of the sewage storage tank (12). An auxiliary cylinder (3) is fixedly installed on the outer surface of the water inlet pipe (11). The auxiliary cylinder (3) includes an outer cylinder (31) with an outer diameter equal to that of the sewage storage tank (12). Multiple sets of water inlets (32) are connected between the outer cylinder (31) and the air inlet pipe (21), and the water inlets (32) are connected to the sewage outlet (15).

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