Drainage device for tunnel construction

Abstract

The utility model discloses a drainage device for tunnel construction, which belongs to the technical field of tunnel drainage construction, and comprises a plurality of water pumping components placed in different water collecting wells, the plurality of water pumping components are connected in series through water pumping pipes, each water pumping component comprises a vertically placed main cylinder, filter holes are distributed at the bottom of each main cylinder, and the filter holes are communicated with the main cylinder. A first liquid inlet pipe, a second liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe are arranged on the two sides of the main barrel respectively, the first liquid inlet pipe and the second liquid inlet pipe are connected with the same main inlet pipe through a three-way pipe, the first liquid outlet pipe and the second liquid outlet pipe are connected with the same main outlet pipe through a three-way pipe, and a buoy is arranged in the main barrel in a sliding mode. The buoy is provided with a transverse through flow channel. According to the drainage device for tunnel construction, the water pumping state can be automatically controlled according to the water levels of the water collecting wells, manual intervention is not needed, and drainage of the water collecting wells does not interfere with one another.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel drainage construction technical field, especially relate to a drainage device for tunnel construction. BACKGROUND

[0002] In the tunnel construction process, the leakage and accumulation of groundwater is a common and serious problem, the existence of groundwater not only will influence construction progress, also can lead to the instability of tunnel structure, even cause safety accidents, therefore, the drainage system in tunnel construction is very important, the traditional tunnel drainage mode usually sets up the water collecting well in the tunnel, through installing the water pump or building the drainage groove in the water collecting well, the accumulated water is drained out of the tunnel. However, this traditional drainage mode has the following problems:

[0003] For long tunnel construction, often needs to build a water collecting well every interval, because the water level of each water collecting well is different, the operating personnel need to adjust the running state of the water pump according to the water level of each water collecting well, therefore, even if the load of the water pump is enough, it is difficult to meet the water pumping demand of different water collecting wells through the water pipe series connection, each water collecting well needs to install an independent water pump, leading to the equipment cost increases greatly, and the equipment investment and maintenance cost is high.

[0004] Therefore, we propose a drainage device for tunnel construction. CONTENT OF UTILITY MODEL

[0005] The utility model aims at solving the problems in the prior art that the water pumping and draining of long tunnel is difficult to meet the water pumping demand of different water collecting wells through the water pipe series connection, leading to high equipment cost, and proposes a drainage device for tunnel construction.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A drainage device for tunnel construction, including multiple water pumping assemblies placed in different water collecting wells, multiple the water pumping assemblies are connected in series through the water pumping pipe, the water pumping assembly includes the main cylinder placed vertically, the main cylinder bottom is distributed with the filter hole, the both sides of main cylinder are provided with liquid inlet pipe one, liquid inlet pipe two, liquid outlet pipe one and liquid outlet pipe two, liquid inlet pipe one and liquid inlet pipe two are connected with the same total inlet pipe through the tee pipe, liquid outlet pipe one and liquid outlet pipe two are connected with the same total outlet pipe through the tee pipe, the float is slidably arranged in the main cylinder, the float has the flow channel that traverses, the axial movement of float can change the communication state of liquid inlet pipe one and liquid outlet pipe one and liquid inlet pipe two and liquid outlet pipe two.

[0008] Preferably, liquid inlet pipe one and liquid outlet pipe one are coaxially arranged, liquid inlet pipe two and liquid outlet pipe two are coaxially arranged.

[0009] Preferably, the float includes a wide diameter part and a narrow diameter part, the wide diameter part has a diameter matched with the inner diameter of the main cylinder, and the narrow diameter part has a diameter smaller than the inner diameter of the main cylinder.

[0010] Preferably, the outer wall of the float is provided with a limiting strip in the axial direction, and the inner wall of the main cylinder is provided with a limiting groove matched with the limiting strip.

[0011] Preferably, the float is a hollow structure.

[0012] Preferably, the bottom of the float and the inner bottom of the main cylinder are provided with magnets, and the two magnets are located in positions corresponding to each other and have opposite magnetism.

[0013] Preferably, the total inlet pipe and the total outlet pipe are connected with the water pumping pipe through a sealing connection structure, the sealing connection structure includes a sealing ring arranged at the end of the total inlet pipe, the total outlet pipe and the water pumping pipe, a first screw ring is sleeved on the total inlet pipe and the total outlet pipe, and a second screw ring capable of being threadedly connected with the first screw ring is sleeved on the water pumping pipe.

[0014] In summary, the technical effects and advantages of the tunnel construction drainage device are as follows: the drainage device for tunnel construction is connected in series with the water pumping assembly, only one water pump with large load is needed to meet the drainage requirements of multiple water collecting wells, and the equipment procurement and maintenance costs are greatly reduced.

[0015] The device can automatically control the water pumping state according to the water level of the water collecting well, and does not need manual intervention, the water pumping is started when there is water in the water collecting well, so that the water is drained, the water pumping is automatically stopped when there is no water in the water collecting well, so that the normal operation of the remote water pumping pipe is avoided due to the exposure of the pipeline system to the atmosphere, water can be pumped from multiple water collecting wells at the same time, and the drainage of the water collecting wells does not interfere with each other. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall arrangement structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the water pumping assembly in the utility model;

[0018] Figure 3 It is a schematic diagram of the sectional structure of the water pumping assembly in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the float in the utility model;

[0020] Figure 5 It is a schematic diagram of the water flow state structure of the float in the lower limit position;

[0021] Figure 6 It is a schematic diagram of the water flow state structure of the float in the upper limit position.

[0022] Fig. 1, water collection well; 2, water pumping assembly; 3, water pumping pipe; 4, main cylinder; 41, liquid inlet pipe one; 42, liquid inlet pipe two; 43, liquid outlet pipe one; 44, liquid outlet pipe two; 45, total liquid inlet pipe; 46, total liquid outlet pipe; 47, filter hole; 48, limiting groove; 5, float; 51, flow channel; 52, wide diameter part; 53, narrow diameter part; 54, limiting strip; 6, magnet; 7, sealing connection structure; 71, sealing ring; 72, first screw ring; 73, second screw ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0024] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0025] Referring to Figures 1-3 A drainage device for tunnel construction includes a plurality of water pumping assemblies 2 placed in different water collection wells 1, and the plurality of water pumping assemblies 2 are connected in series through water pumping pipes 3. The water pumping pipes 3 are connected to water pumps, and the water in the plurality of water collection wells 1 is pumped out by the water pumps. It should be noted that the load of the water pumps needs to meet the pumping requirements of the plurality of water collection wells 1. If the load is exceeded, additional water pumps can be supplemented to ensure that each water pump is operated at full load, thereby reducing the number of water pumps used and reducing equipment costs.

[0026] The water pumping assembly 2 includes a vertically placed main cylinder 4, which is a sealed hollow cylinder. The bottom of the main cylinder 4 is provided with filter holes 47, through which the water in the water collection well 1 can enter the main cylinder 4. The filter holes 47 also filter impurities in the water. The two sides of the main cylinder 4 are respectively provided with liquid inlet pipe one 41, liquid inlet pipe two 42, liquid outlet pipe one 43, and liquid outlet pipe two 44. The liquid inlet pipe one 41 and the liquid outlet pipe one 43 are coaxially arranged, and the liquid inlet pipe two 42 and the liquid outlet pipe two 44 are coaxially arranged. The liquid inlet pipe one 41 and the liquid inlet pipe two 42 are connected to the same total liquid inlet pipe 45 through a three-way pipe, and the liquid outlet pipe one 43 and the liquid outlet pipe two 44 are connected to the same total liquid outlet pipe 46 through a three-way pipe. The total liquid outlet pipe 46 is connected to the water pumping pipe 3, which is connected to the total liquid inlet pipe 45 of the water pumping assembly 2 in the adjacent water collection well 1, thereby forming a series drainage system for the plurality of water collection wells 1.

[0027] Referring to Figures 2-6A float 5 is arranged to slide in the main cylinder 4. When the water in the water well 1 overflows the main cylinder 4, the water enters the main cylinder 4 through the filter holes 47. Under the buoyancy of the water, the float 5 floats to the top of the main cylinder 4. When the water in the water well 1 is insufficient, the float 5 loses buoyancy and drops to the bottom of the main cylinder 4. Therefore, the float 5 has an upper limit position and a lower limit position in the main cylinder 4. The float 5 has a flow channel 51 extending transversely therethrough. The axial movement of the float 5 can change the communication state of the inlet pipe 41 and the outlet pipe 41 and the inlet pipe 42 and the outlet pipe 44.

[0028] As shown in Figure 5 , when there is no water or the water in the water well 1 is insufficient and no water needs to be pumped out, the float 5 is at the lower limit position. At this time, the flow channel 51 is coaxial with the inlet pipe 41 and the outlet pipe 41, so that the inlet pipe 41 and the outlet pipe 41 are communicated. At the same time, the float 5 separates the inlet pipe 42 and the outlet pipe 44 and the filter holes 47 below. At this time, the water entering the total inlet pipe 45 can only enter through the inlet pipe 41 and flow out through the outlet pipe 41.

[0029] The float 5 includes a wide diameter part 52 and a narrow diameter part 53. The diameter of the wide diameter part 52 is in close contact with the inner diameter of the main cylinder 4. The diameter of the narrow diameter part 53 is smaller than the inner diameter of the main cylinder 4. When the float 5 is at the upper limit position, the narrow diameter part 53 corresponds to the inlet pipe 42 and the outlet pipe 44. At this time, the inlet pipe 42, the outlet pipe 44 and the filter holes 47 are all communicated with the gap chamber formed between the narrow diameter part 53 of the float 5 and the main cylinder 4.

[0030] As shown in Figure 6 , when the water in the water well 1 is sufficient, the float 5 floats to the upper limit position. At this time, the flow channel 51 is dislocated with the inlet pipe 41 and the outlet pipe 41. The float 5 blocks the inlet pipe 41 and the outlet pipe 41. The water entering the total inlet pipe 45 can only enter through the inlet pipe 42 and flow out through the outlet pipe 44 together with the water pumped out through the filter holes 47. The water pumping state is automatically controlled according to the water level in the water well 1. No manual intervention is needed. When there is water in the water well 1, the water pumping is started to realize water drainage. When there is no water in the water well 1, the water pumping is automatically stopped. At the same time, the normal operation of the remote water pumping pipe 3 can be ensured. The water can be pumped from multiple water wells 1 at the same time. The water drainage of each water well 1 does not interfere with each other.

[0031] Referring to Figures 4-6 , a limiting strip 54 is arranged on the outer wall of the float 5 in the axial direction. A limiting groove 48 is arranged on the inner wall of the main cylinder 4 and is matched with the limiting strip 54. The limiting strip 54 and the limiting groove 48 are matched to limit the float 5 in the circumferential direction. The float 5 is prevented from being deflected when moving in the axial direction. Therefore, the flow channel 51 can be accurately matched with the inlet pipe 41 and the outlet pipe 41.

[0032] The float 5 is a hollow structure, which ensures that the float 5 has sufficient buoyancy under the action of water.

[0033] In order to avoid the case that the water in the water collecting well 1 is less, the buoyancy makes the float 5 be located between the upper limit position and the lower limit position, affecting the pumping operation, the bottom of the float 5 and the inner bottom of the main cylinder 4 are provided with magnets 6, the positions of the two magnets 6 are corresponding and the magnetism is opposite, when the two magnets 6 are close to each other, the float 5 tends to be located at the lower limit position through the adsorption force of the magnet 6, when the water in the water collecting well 1 overflows the filter hole 47 and enters the main cylinder 4, the float 5 generates buoyancy, at this time, the buoyancy is not enough to overcome the adsorption force of the magnet 6 to make the float 5 float, until the water level is higher than the entire float 5, the float 5 is subjected to a larger buoyancy, the float 5 overcomes the adsorption force of the magnet 6 and separates from the bottom of the main cylinder 4, after separation, the adsorption force generated by the magnet 6 will suddenly decrease, and the float 5 will produce a small explosive displacement to reach the upper limit position, in the process of pumping, as the water level decreases, the float 5 located at the upper limit position will gradually move downward, until the float 5 enters the adsorption range of the magnet 6, the float 5 will overcome a small amount of buoyancy and directly reach the lower limit position, therefore, under the action of the two magnets 6, the float 5 is mainly in the upper limit position and the lower limit position, and the pumping operation in the two different states is stably realized.

[0034] Reference Figures 2-3 The total inlet pipe 45 and the total outlet pipe 46 are connected with the pumping pipe 3 through the sealing connection structure 7, which is convenient for the series connection of the pumping assembly 2 and the pumping pipe 3, the sealing connection structure 7 includes a sealing ring 71 arranged at the end of the total inlet pipe 45, the total outlet pipe 46 and the pumping pipe 3, the total inlet pipe 45 and the total outlet pipe 46 are sleeved with a first screw ring 72, and the pumping pipe 3 is sleeved with a second screw ring 73 which can be screwed with the first screw ring 72, the two sealing rings 71 are abutted and sealed by screwing the first screw ring 72 and the second screw ring 73, it should be noted that the total inlet pipe 45 of the pumping assembly 2 located in the terminal water collecting well 1 is blocked by a round plate.

[0035] Working principle:

[0036] In use, the pumping assembly 2 is installed in each water collecting well 1, the main cylinder 4 needs to be installed vertically, and the filter hole 47 is located below, a plurality of pumping assemblies 2 are connected in series through the pumping pipe 3, and a water pump is arranged at the end of the pumping pipe 3 to pump water, under the suction force of the water pump, the water in the water collecting well 1 enters the pumping assembly 2 through the filter hole 47 and is discharged through the pumping pipe 3.

[0037] When there is no water or the water amount is small in the water collecting well 1 and the water does not need to be drained, the float 5 is in the lower limit position, at this time, the flow channel 51 is coaxial with the inlet pipe 41 and the outlet pipe 43, the inlet pipe 41 and the outlet pipe 43 are communicated, at the same time, the float 5 separates the inlet pipe 42 and the outlet pipe 44 and the filter hole 47 below, at this time, the water entering the total inlet pipe 45 can only enter through the inlet pipe 41 and flow out through the outlet pipe 43.

[0038] When the water amount in the water collecting well 1 is large, the float 5 floats to the upper limit position, at this time, the flow channel 51 is dislocated with the inlet pipe 41 and the outlet pipe 43, the float 5 blocks the inlet pipe 41 and the outlet pipe 43, the water entering the total inlet pipe 45 can only enter through the inlet pipe 42 and flow out through the outlet pipe 44 together with the water drained through the communicated filter hole 47, the water pumping state is automatically controlled according to the water level of the water collecting well 1, without manual intervention, when there is water in the water collecting well 1, the water pumping is started, the water is drained, when there is no water in the water collecting well 1, the water pumping is automatically stopped, at the same time, the normal operation of the remote water pumping pipe 3 is ensured, the influence of the pipeline system and the atmosphere on the normal operation of the remote water pumping pipe 3 is avoided.

[0039] The above is only the preferable specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, all of which should be covered in the protection scope of the present application.

Claims

1. A drainage device for tunnel construction, comprising a plurality of water pumping assemblies (2) placed in different water collecting wells (1), the plurality of water pumping assemblies (2) being connected in series by a water pumping pipe (3), characterized in that, The water pumping assembly (2) comprises a vertically placed main cylinder (4), the bottom of the main cylinder (4) is provided with filter holes (47), the two sides of the main cylinder (4) are respectively provided with a liquid inlet pipe one (41), a liquid inlet pipe two (42), a liquid outlet pipe one (43) and a liquid outlet pipe two (44), the liquid inlet pipe one (41) and the liquid inlet pipe two (42) are connected with the same total inlet pipe (45) through a three-way pipe, the liquid outlet pipe one (43) and the liquid outlet pipe two (44) are connected with the same total outlet pipe (46) through a three-way pipe, a float (5) is slidably arranged in the main cylinder (4), the float (5) has a transversely penetrating flow channel (51), and axial movement of the float (5) can change the communication state of the liquid inlet pipe one (41) and the liquid outlet pipe one (43) and the liquid inlet pipe two (42) and the liquid outlet pipe two (44).

2. The drainage device for tunnel construction according to claim 1, characterized by The liquid inlet pipe one (41) and the liquid outlet pipe one (43) are coaxially arranged, and the liquid inlet pipe two (42) and the liquid outlet pipe two (44) are coaxially arranged.

3. The drainage device for tunnel construction according to claim 1, characterized by The float (5) comprises a wide diameter part (52) and a narrow diameter part (53), the diameter of the wide diameter part (52) is matched with the inner diameter of the main cylinder (4), and the diameter of the narrow diameter part (53) is smaller than the inner diameter of the main cylinder (4).

4. The drainage device for tunnel construction according to claim 1, characterized by The outer wall of the float (5) is provided with a limiting strip (54) in the axial direction, and the inner wall of the main cylinder (4) is provided with a limiting groove (48) matched with the limiting strip (54).

5. The drainage device for tunnel construction according to claim 1, wherein The float (5) is a hollow structure.

6. The drainage device for tunnel construction according to claim 1, wherein The bottom of the float (5) and the inner bottom of the main cylinder (4) are provided with magnets (6), the two magnets (6) are positionally corresponding and magnetically opposite.

7. The drainage device for tunnel construction according to claim 1, wherein The total inlet pipe (45) and the total outlet pipe (46) are connected with the water pumping pipe (3) through a sealing connection structure (7), the sealing connection structure (7) comprises a sealing ring (71) arranged at the end of the total inlet pipe (45), the total outlet pipe (46) and the water pumping pipe (3), a first screw ring (72) is sleeved on the total inlet pipe (45) and the total outlet pipe (46), and a second screw ring (73) capable of being threadedly connected with the first screw ring (72) is sleeved on the water pumping pipe (3).

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