Backflow-preventing drainage device for south-to-north water diversion channel

Abstract

The utility model relates to a drainage device for preventing backflow of a south-to-north water diversion channel, which comprises lining plates arranged on two sides of the channel in the length direction of a water delivery channel, grooves are arranged on the lining plates, reinforcing layers are laid in the grooves, transverse drainage pipes are arranged in the lining plates and the reinforcing layers, one end of each transverse drainage pipe is connected with a U-shaped pipe through a flange, and the other end of each transverse drainage pipe is connected with a drainage pipe. The free end of the U-shaped pipe is connected with a vertically telescopic corrugated pipe through a flange, and the top of the corrugated pipe is fixedly connected with a water outlet pipe. When the underground water level is higher than the running water level in the canal, underground water can be automatically drained through the corrugated pipe, the water outlet pipe and the flap valve, when the external underground water level is lower than the running water level in the canal, the flap valve and the floating block float upwards under the action of the buoyancy device along with the rising of the running water level in the canal, water in the canal can be prevented from flowing back outwards, and therefore the device can drain water conveniently; when the flap valve is opened and closed, the flap valve can be automatically opened and closed, and the situations that manual opening and closing operation is large in risk, time-consuming, labor-consuming and water in the canal flows back are avoided.

Description

Technical Field

[0001] The utility model relates to a groundwater drainage technology, in particular to a drainage device for preventing backflow in a South-to-North Water Diversion Channel. Background Art

[0002] At present, drainage blind ditches are added to the high underground water channel section of the South-to-North Water Diversion Project. When the external groundwater level is higher than the operating water level in the channel, it flows into the channel through the horizontal drainage pipe. When the external groundwater level is lower than the operating water level in the channel, as the operating water level in the channel rises, the outlet flap gate is manually closed to prevent the water in the channel from flowing back outward. The flap gate is set at the end of the horizontal drainage pipe near the designed water level on the inner side of the channel. The outlet is controlled by the flap gate. When the flap gate is opened and closed, it is usually during the flood season, accompanied by adverse weather factors such as thunderstorms and storms. There are problems such as high risk, time-consuming and labor-intensive manual opening and closing operations, as well as backflow of water in the channel. Utility Model Content

[0003] The utility model aims to provide a drainage device for preventing backflow in the South-to-North Water Diversion Channel, which is used to solve the problems of large risk, time-consuming and labor-intensive manual opening and closing operations and backflow of water in the channel when the flap gate is opened and closed by the existing flap gate control.

[0004] In order to solve the above problems, the utility model provides a drainage device for preventing backflow in the South-to-North Water Diversion Channel, comprising lining plates arranged on both sides of the channel in the length direction of the water transfer channel, the lining plates being provided with grooves, reinforcement layers being laid in the grooves, transverse drainage pipes being provided in the lining plates and the reinforcement layers, one end of the transverse drainage pipe being connected to a U-shaped pipe through a flange, the free end of the U-shaped pipe being connected to a corrugated pipe that can be telescoped up and down through a flange, the top of the corrugated pipe being fixedly connected to a water outlet pipe, a rotatable floating block being provided on the water outlet pipe, and a flap gate being fixedly connected to the top of the water outlet pipe.

[0005] The drainage device for preventing backflow in the South-to-North Water Diversion Channel provided by the utility model also has the following technical features:

[0006] Furthermore, the reinforcement layer is a concrete layer, and embedded parts are connected to the reinforcement layer by bolts. Multiple columns are fixed on the embedded parts. A limiting plate is fixed on the floating block. The limiting plate is provided with multiple limiting holes corresponding to the columns one by one, and the multiple columns respectively pass through the corresponding limiting holes.

[0007] Furthermore, a top plate is fixed on the top of the plurality of columns.

[0008] Furthermore, the flap door comprises a bottom frame and a baffle, the bottom frame is fixedly connected to the top of the water outlet pipe, and one side of the baffle is hinged to the bottom frame via a rotating shaft.

[0009] Furthermore, an L-shaped rod is fixed to the upper side of the bottom frame, and one end of the L-shaped rod is located above the baffle.

[0010] Furthermore, a T-shaped column movable up and down is provided on the L-shaped rod, the stepped surface of the T-shaped column is fixedly connected to the L-shaped rod via a tension spring, a ball is fixed on the lower side of the T-shaped column, and the ball contacts the surface of the baffle.

[0011] The utility model has the following beneficial effects: by grooving and breaking the lining plate and excavating below the designed water level, the reinforcement layer is hardened, the outlet end of the U-shaped pipe opens upward and is connected with a bellows that can be extended and retracted up and down, and the outlet pipe and the floating block are arranged, and the buoyancy of water can make the flap gate always higher than the running water level in the channel, and by the upward arrangement of the flap gate, when the groundwater level is higher than the running water level in the channel, the groundwater can be discharged automatically through the bellows, the outlet pipe and the flap gate, and when the external groundwater level is lower than the running water level in the channel, as the running water level in the channel rises, the flap gate and the floating block float up under the action of the buoyancy device, which can prevent the water in the channel from flowing back outwards, so that the device can be convenient for drainage, and when the flap gate is opened and closed, it can be opened and closed automatically, avoiding the high risk, time-consuming and labor-intensive manual opening and closing operations and the occurrence of water backflow in the channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0013] Figure 2 It is a front view of an embodiment of the utility model;

[0014] Figure 3 This is a three-dimensional diagram of an embodiment of the utility model after removing the water delivery channel and the reinforcement layer;

[0015] Figure 4 This is a front view cutaway diagram of an embodiment of the utility model after removing the water delivery channel and the reinforcement layer;

[0016] Figure 5 For the utility model embodiment Figure 4 Schematic diagram of the structure enlarged at point A in the middle. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0018] like Figures 1 to 5In the embodiment of the drainage device for preventing backflow in the South-to-North Water Diversion Channel of the utility model shown in the figure, the drainage device for preventing backflow in the South-to-North Water Diversion Channel includes lining plates 2 arranged on both sides of the channel in the length direction of the water transfer channel 1, a groove is opened on the lining plate 2, a reinforcement layer 3 is laid in the groove, a transverse drainage pipe 4 is arranged in the lining plate 2 and the reinforcement layer 3, one end of the transverse drainage pipe 4 is connected to a U-shaped pipe 5 through a flange, and the free end of the U-shaped pipe 5 is connected to a bellows 6 that can be telescoped up and down through a flange, the bellows 6 adopts a freely telescopic polyurethane hose, the top of the bellows 6 is fixedly connected to a water outlet pipe 7, a rotatable floating block 8 is provided on the water outlet pipe 7, and a flap door 9 is fixedly connected to the top of the water outlet pipe 7, by breaking the grooves in the lining plate 2 and excavating below the designed water level, The U-shaped tube 5 is hardened with a reinforcement layer 3, and the outlet end thereof opens upward and is connected with a bellows 6 which can be extended and retracted up and down. Through the arrangement of the outlet pipe 7 and the float 8, the flap gate 9 can always be higher than the running water level in the channel through the buoyancy of water, and through the upward arrangement of the flap gate 9, when the groundwater level is higher than the running water level in the channel, the groundwater can be discharged automatically through the bellows 6, the outlet pipe 7 and the flap gate 9. When the external groundwater level is lower than the running water level in the channel, as the running water level in the channel rises, the flap gate 9 and the float 8 float up under the action of the buoyancy device, which can prevent the water in the channel from flowing back outwards, thereby making the device convenient for drainage, and when the flap gate 9 is opened and closed, it can be opened and closed automatically, avoiding the risk of manual opening and closing operations, which are time-consuming and laborious, and the occurrence of water backflow in the channel.

[0019] In one embodiment of the present application, preferably, the reinforcement layer 3 is a concrete layer, and an embedded part 10 is connected to the reinforcement layer 3 by bolts, a plurality of columns 11 are fixed on the embedded part 10, a limiting plate 12 is fixed on the floating block 8, and a plurality of limiting holes corresponding to the columns 11 are opened on the limiting plate 12, and the plurality of columns 11 respectively pass through the corresponding limiting holes. Through the arrangement of the columns 11 and the limiting plates 12, the limiting plates 12 can only move up and down on the surface of the columns 11, thereby limiting the moving path of the corrugated pipe 6.

[0020] In one embodiment of the present application, preferably, a top plate 13 is fixed to the top of the plurality of columns 11 , and the setting of the top plate 13 prevents the limiting plate 12 from being separated from the column 11 .

[0021] In one embodiment of the present application, preferably, the flap door 9 includes a bottom frame 91 and a baffle 92, the bottom frame 91 is fixedly connected to the top of the outlet pipe 7, and one side of the baffle 92 is hinged to the bottom frame 91 via a rotating shaft. When the groundwater level is higher than the operating water level in the channel, the groundwater can pass through the horizontal drainage pipe 4, the U-shaped pipe 5, the corrugated pipe 6, the outlet pipe 7 and the bottom frame 91, and then the baffle 92 is pushed open to allow the groundwater to be discharged by itself.

[0022] In one embodiment of the present application, preferably, an L-shaped rod 14 is fixed to the upper side of the bottom frame 91, and one end of the L-shaped rod 14 is located above the baffle 92. Through the setting of the L-shaped rod 14, the opening angle of the baffle 92 is limited, thereby preventing the baffle 92 from opening more than ninety degrees, causing the baffle 92 to be unable to reset.

[0023] In one embodiment of the present application, preferably, a T-shaped column 15 that can move up and down is provided on the L-shaped rod 14, and the stepped surface of the T-shaped column 15 is fixedly connected to the L-shaped rod 14 via a tension spring, and a spherical ball 16 is fixed to the lower side of the T-shaped column 15, and the spherical ball 16 contacts the surface of the baffle 92, so that the spherical ball 16 squeezes the baffle 92 under the action of the tension spring, thereby facilitating the baffle 92 to be reset under the action of the tension spring when water is not discharged through the flap door 9.

[0024] When the utility model is in use, the lining plate 2 is grooved and broken and excavated to below the designed water level, and the concrete layer is hardened. The outlet end of the U-shaped pipe 5 opens upward and is connected with a bellows 6 that can be telescoped up and down. Through the arrangement of the outlet pipe 7 and the floating block 8, the buoyancy of water can make the flap gate 9 always higher than the running water level in the channel, and through the upward arrangement of the flap gate 9, when the groundwater level is higher than the running water level in the channel, the groundwater can pass through the horizontal drainage pipe 4, the U-shaped pipe 5, the bellows 6, the outlet pipe 7 and the bottom frame 91, and then the baffle 92 is pushed open to allow the groundwater to be discharged by itself. When the external groundwater level is lower than the running water level in the channel, as the running water level in the channel rises, the flap gate 9 and the floating block 8 float up under the action of the buoyancy device, and the ball 16 squeezes the baffle 92 under the action of the tension spring, so that the water in the channel can be prevented from flowing back outward.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A drainage device for preventing backflow in a South-to-North Water Diversion Channel, comprising lining plates (2) arranged on both sides of a water diversion channel (1) in the longitudinal direction of the channel, characterized in that: The lining plate (2) is provided with a groove, a reinforcement layer (3) is laid in the groove, a transverse drainage pipe (4) is provided in the lining plate (2) and the reinforcement layer (3), one end of the transverse drainage pipe (4) is connected to a U-shaped pipe (5) via a flange, the free end of the U-shaped pipe (5) is connected to a bellows (6) that can be extended and retracted up and down via a flange, the top of the bellows (6) is fixedly connected to a water outlet pipe (7), a rotatable floating block (8) is provided on the water outlet pipe (7), and a flapper (9) is fixedly connected to the top of the water outlet pipe (7).

2. The drainage device for preventing backflow in the South-to-North Water Diversion Channel according to claim 1 is characterized by: The reinforcement layer (3) is a concrete layer, an embedded part (10) is connected to the reinforcement layer (3) by bolts, a plurality of columns (11) are fixed to the embedded part (10), a limiting plate (12) is fixed to the floating block (8), a plurality of limiting holes corresponding to the columns (11) are formed on the limiting plate (12), and the plurality of columns (11) respectively penetrate the corresponding limiting holes.

3. The drainage device for preventing backflow in the South-to-North Water Diversion Channel according to claim 2 is characterized by: A top plate (13) is fixed on the top of the plurality of upright posts (11).

4. The drainage device for preventing backflow in the South-to-North Water Diversion Channel according to claim 1 is characterized by: The flap door (9) comprises a bottom frame (91) and a baffle (92); the bottom frame (91) is fixedly connected to the top of the water outlet pipe (7); one side of the baffle (92) is hinged to the bottom frame (91) via a rotating shaft.

5. The drainage device for preventing backflow in the South-to-North Water Diversion Channel according to claim 4 is characterized by: An L-shaped rod (14) is fixed to the upper side of the bottom frame (91), and one end of the L-shaped rod (14) is located above the baffle (92).

6. The drainage device for preventing backflow in the South-to-North Water Diversion Channel according to claim 5 is characterized by: The L-shaped rod (14) is provided with a T-shaped column (15) that can move up and down, the stepped surface of the T-shaped column (15) is fixedly connected to the L-shaped rod (14) via a tension spring, and a round ball (16) is fixed to the lower side of the T-shaped column (15), and the round ball (16) is in contact with the surface of the baffle (92).

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