Sewage recycling device for tunnel shield tunneling machine

Abstract

The utility model discloses a sewage recycling device for a tunnel shield tunneling machine, which comprises a sewage pool, a sewage cavity is formed in the sewage pool, and the sewage cavity is used for standing of separated sewage; the clean water tank is located on one side of the sewage tank, a clean water cavity is formed in the clean water tank, a partition plate is arranged between the clean water cavity and the sewage cavity, a filter plate is arranged in the middle of the partition plate, and the clean water cavity is communicated with the sewage cavity through the filter plate; the filter press is mounted on the sewage pool through a bracket, and the output end of the filter press extends into the sewage cavity through a pipeline; the acid-resistant DN50 pneumatic diaphragm pump is mounted at the shield tail and is responsible for pumping sewage at the shield tail and pumping and discharging accumulated sludge into the filter press for solid-liquid separation, and the sludge is compressed under high-strength extrusion, so that the sludge is prevented from being loaded and transferred again, and the transportation cost of sludge blocks is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of shield tunnel construction, and in particular relates to a sewage recycling device for a tunnel shield machine. Background Art

[0002] At present, in underground projects, ordinary sewage pumps are used to pump the sewage from the shield tail to the small sedimentation tank on the No. 5 trailer of the shield machine for cleaning the formed segments of the shield tunnel and cleaning the shield tail before segment assembly. The sewage is then pumped to the sedimentation tank at the tunnel hoisting wellhead by a sewage pump and finally discharged to the ground after three levels of sedimentation.

[0003] At present, the temporary method used for cleaning the shield tail before assembling the formed segments and the shield tail segments of the shield tunnel is to pump out the sewage, clean it manually in bags, and finally transport it to the wellhead by a transport vehicle. This traditional method of sludge and sewage treatment is time-consuming and labor-intensive, with low construction efficiency and increased engineering workload. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model aims to provide a sewage recycling device for a tunnel shield machine.

[0005] The technical solution adopted by the utility model includes:

[0006] A sewage tank, wherein a sewage cavity is formed inside the sewage tank, and the sewage cavity is used for standing the separated sewage;

[0007] A clean water tank is located at one side of the sewage tank, and a clean water cavity is formed therein. A partition is provided between the clean water cavity and the sewage cavity, and a filter plate is provided in the middle of the partition. The clean water cavity and the sewage cavity are connected to each other through the filter plate;

[0008] A filter press is installed on the sewage tank through a bracket, and the output end of the filter press extends into the sewage chamber through a pipeline;

[0009] A diaphragm pump is installed on a side of the sewage chamber away from the clean water tank, and an output end of the diaphragm pump is connected to an input end of the filter press.

[0010] As a preferred embodiment of the utility model, an earth bucket is provided between the sewage chamber and the filter press, a slide rail is fixedly provided on the top of the sewage tank by bolts, a slide seat is slidably provided on the slide rail, the earth bucket is fixedly connected to the slide seat, a motor is provided on the partition, the fixed end of the motor is fixedly connected to the partition, a screw rod is provided for transmission connection at the output end of the motor, a slider is threadedly provided on the screw rod, and the top of the slider is fixedly connected to the earth bucket.

[0011] As a preferred embodiment of the utility model, the air pipe of the diaphragm pump is connected to the air pump of the shield machine, the input end of the diaphragm pump is connected to a sewage pipe, a filter is provided in the sewage pipe, and a liquid level meter is provided on one side of the filter.

[0012] As a preferred embodiment of the utility model, a cylinder support is provided on the top of the clear water tank, a hydraulic cylinder is provided on the cylinder support, the hydraulic cylinder is fixedly connected to the cylinder support, the hydraulic oil pipe of the hydraulic cylinder is connected to the hydraulic pump of the shield machine, and the hydraulic cylinder is used to drive the filter press.

[0013] As a preferred embodiment of the utility model, a high liquid level gauge and a low liquid level gauge are provided on the clean water tank, and the high liquid level gauge and the low liquid level gauge are used to detect the liquid level height in the clean water chamber. A water outlet pipe is provided on one side of the low liquid level gauge, and the water outlet pipe is connected to the clean water chamber.

[0014] As a preferred embodiment of the present invention, the height of the water outlet pipe on the clear water tank is lower than the height of the low liquid level gauge on the clear water tank.

[0015] As a preferred embodiment of the utility model, a booster pump is provided on the side of the water outlet pipe away from the clean water tank, the input end of the booster pump is connected to the water outlet pipe, and the output end thereof is connected to a water pipe, and a pressure control valve is provided on the water pipe.

[0016] As a preferred embodiment of the utility model, an electrical control cabinet is provided on a side of the clean water tank away from the sewage tank, and the electrical control cabinet is connected to the solenoid valve of the hydraulic cylinder, the diaphragm pump, the high liquid level gauge and the low liquid level gauge by electrical signals.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model is a sewage recycling device for a tunnel shield machine. An acid-resistant DN50 pneumatic diaphragm pump is installed at the tail of the shield to extract the sewage at the tail of the shield, and the accumulated mud is pumped into the filter press for solid-liquid separation. The volume of the sludge is compressed under high-intensity squeezing, which avoids the loading and transportation of the sludge and reduces the transportation cost of the mud blocks.

[0019] 2. The separated sewage is precipitated in the sludge pool, and some particles are precipitated at the bottom of the sludge pool. The sludge water flows into the clean water pool under the action of the partition and the filter plate, so that the separated water can be stored and can be used at the front end of the shield machine to flush the shield machine equipment or moisten the soil and rock layers, thereby increasing the excavation speed of the shield machine and providing multiple utilization of the water in the sludge.

[0020] All electrical systems are fully automatically controlled by PLC programs and touch screens, and can also be switched to manual control. The filter press and booster pump are controlled by frequency converters, and the power supply for the control equipment is provided by the shield machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the sewage tank and the clean water tank of the utility model;

[0024] Figure 3 This utility model Figure 2 A is an enlarged structural diagram of FIG.

[0025] In the figure: 1. sewage tank; 2. clean water tank; 3. filter press; 4. diaphragm pump; 5. booster pump; 6. electrical control cabinet; 11. sewage chamber; 12. soil bucket; 13. filter plate; 14. partition; 21. clean water chamber; 22. high liquid level gauge; 23. low liquid level gauge; 24. water pipe; 25. pressure control valve; 26. outlet pipe; 31. cylinder support; 32. hydraulic cylinder; 33. hydraulic oil pipe; 34. solenoid valve; 41. air pipe; 51. sewage pipe; 52. filter screen; 53. liquid level gauge; 121. motor; 122. screw rod; 123. slider; 124. slide seat; 125. slide rail. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] Combine the following Figure 1-3 The specific implementation mode of the utility model is described, a sewage recycling device for a tunnel shield machine comprises:

[0029] A sewage tank 1, wherein a sewage chamber 11 is formed inside the sewage tank 1, and the sewage chamber 11 is used for storing the separated sewage;

[0030] The clean water tank 2 is located at one side of the sewage tank 1, and a clean water cavity 21 is formed therein. A partition 14 is provided between the clean water cavity 21 and the sewage cavity 11, and a filter plate 13 is provided in the middle of the partition 14. The clean water cavity 21 and the sewage cavity 11 are connected to each other through the filter plate 13. After the sewage is left to stand in the sewage cavity 11, it leaks into the clean water cavity 21 through the filter plate 13. The clean water obtained meets the needs of the front end of the shield machine, flushes the shield machine equipment or dilutes the dry soil, realizes the recycling of sewage, and at the same time improves the excavation speed and reduces the loading and re-transportation of sludge;

[0031] The filter press 3 is installed on the sewage pool 1 through a bracket, and the output end of the filter press 3 extends into the sewage chamber 11 through a pipeline. The filter press 3 separates the solid and liquid of the extracted sewage to achieve the reuse of water in the sludge;

[0032] The diaphragm pump 4 is installed in the sewage chamber 11 at a side away from the clean water tank 2, and its output end is connected with the input end of the filter press 3 to realize the sludge being pumped into the filter press 3 for solid-liquid separation.

[0033] In this embodiment, please refer to Figure 1-2 As shown, a soil bucket 12 is provided between the sewage chamber 11 and the filter press 3, a slide rail 125 is fixedly provided on the top of the sewage pool 1 by bolts, a slide seat 124 is slidably provided on the slide rail 125, the soil bucket 12 is fixedly connected to the slide seat 124, a motor 121 is provided on the partition 14, the fixed end of the motor 121 is fixedly connected to the partition 14, a screw rod 122 is provided at the output end of the motor 121 for transmission connection, a slider 123 is provided on the screw rod 122 for threaded cooperation, the top of the slider 123 is fixedly connected to the soil bucket 12, the drive of the motor 121 drives the screw rod 122 to rotate, and the screw rod 12 2 rotates and is threadedly engaged with the slider 123. The slider 123 is fixedly connected to the bottom of the earth bucket 12, and finally the motor 121 drives the earth bucket 12 to slide on the top of the sewage pool 1. After the earth bucket 12 is full of mud, it slides out from the top of the sewage pool 1 and opens the door body in the earth bucket 12 to unload the mud in the earth bucket 12. After unloading, it is reset to the top of the sewage pool 1 to load the mud. After the sludge water passes through the filter press 3, the sludge is separated from the solid and liquid, and the volume of the soil is compressed, which improves the transportation efficiency of the sludge, and at the same time realizes the secondary recycling of sewage and reduces the consumption of tap water.

[0034] For further information, please refer to Figure 1As shown, the air pipe 41 of the diaphragm pump 4 is connected to the air pump of the shield machine, and the input end of the diaphragm pump 4 is connected to a sewage pipe 51. A filter screen 52 is provided in the sewage pipe 51, and a liquid level gauge 53 is provided on one side of the filter screen 52. The filter screen 52 prevents the introduced sludge from clogging the sewage pipe 51 or the input end pipe of the filter press 3.

[0035] For details of this embodiment, please refer to Figure 1 As shown, a cylinder support 31 is provided on the top of the clear water tank 2, and a hydraulic cylinder 32 is provided on the cylinder support 31. The hydraulic cylinder 32 is fixedly connected to the cylinder support 31, and a hydraulic oil pipe 33 of the hydraulic cylinder 32 is connected to the hydraulic pump of the shield machine. The hydraulic cylinder 32 is used to drive the filter press 3, and the hydraulic oil pipe 33 is connected to the hydraulic pump of the shield machine to avoid using an external power source to drive the filter press 3.

[0036] In this embodiment, please refer to Figure 2 As shown, the clean water tank 2 is provided with a high liquid level gauge 22 and a low liquid level gauge 23, and the high liquid level gauge 22 and the low liquid level gauge 23 are used to detect the liquid level height in the clean water chamber 21. A water outlet pipe 26 is provided on one side of the low liquid level gauge 23, and the water outlet pipe 26 is connected to the clean water chamber 21. The high liquid level gauge 22 and the low liquid level gauge 23 are used to detect the liquid level difference in the clean water chamber 21, so as to realize the electronic control adjustment of the operating state or operating speed of the filter press 3 and the diaphragm pump 4, so as to realize the high-speed processing of the sludge.

[0037] For details, please refer to Figure 1-2 As shown, the height of the water outlet pipe 26 on the clean water tank 2 is lower than the height of the low liquid level meter 23 on the clean water tank 2, so that the low liquid level meter 23 can detect the liquid level in the clean water chamber 21.

[0038] In this embodiment, please refer to Figure 2 As shown, a booster pump 5 is provided on the side of the water outlet pipe 26 away from the clean water tank 2. The input end of the booster pump 5 is connected to the water outlet pipe 26, and the output end is connected to a water pipe 24. A pressure control valve 25 is provided on the water pipe 24. The booster pump 5 is used to extract clean water from the clean water chamber 21 to transport the recovered water to the front end of the shield through the water pipe 24 for use.

[0039] For further information, please refer to Figure 1 As shown, an electrical control cabinet 6 is provided on the side of the clean water tank 2 away from the sewage tank 1. The electrical control cabinet 6 is connected to the solenoid valve 34 of the hydraulic cylinder 32, the diaphragm pump 4, the high liquid level gauge 22 and the low liquid level gauge 23 by electrical signals, so as to realize precise control of each component by the electrical control cabinet 6.

[0040] Working principle of this utility model:

[0041] Start the filter press 3 first. After the filter press 3 is started, the pressure in the hydraulic oil pipe 33 will slowly rise to the set initial pressure, and then the system will provide an electrical signal to the solenoid valve of the diaphragm pump 4, and the diaphragm pump 4 will then start working. When the pressure plate cylinder of the filter press 3 reaches a certain set pressure, it means that the sludge is full and needs to be released. The filter press 3 will stop automatically, and the diaphragm pump 4 will also be automatically closed. Manual processing is required to release the sludge. After the sludge is cleaned, it will be transported out through the bucket 12 of the battery car. When the clean water tank 2 is full, the high liquid level sensor of the water tank sends a signal to the PLC to stop the filter press 3 and the diaphragm pump 4. When the low liquid level gauge 23 of the water tank sends a signal, the filter press 3 and the diaphragm pump 4 will be automatically started. At this time, the booster pump 5 cannot be started either, and the shield tail is installed A liquid level float. When the float sends a signal to the PLC, the filter press 3 and the diaphragm pump 4 will be started. When there is no signal from the shield tail liquid level float, the filter press 3 and the diaphragm pump 4 cannot be started. The booster pump 5 needs to install a pressure control valve 25 on the water pipe 24 to work. When the pressure is lower than the set value or there is water pressure relief on the water pipe 24, the booster pump 5 will start automatically. When the pressure of the water pipe 24 reaches the set value, the booster pump 5 will be automatically shut down. At the same time, the shield machine equipment itself has a bentonite system. This system is used to improve the slag in the soil bin during the shield machine excavation, or to dilute the soil when it is dry. The system has a five-cubic-meter water storage tank, where we can use it to store the clean water we filter out for backup.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A device for recycling wastewater from a tunnel shield machine, characterized in that: include: A sewage tank, wherein a sewage cavity is formed inside the sewage tank, and the sewage cavity is used for standing the separated sewage; A clean water tank is located at one side of the sewage tank, and a clean water cavity is formed therein. A partition is provided between the clean water cavity and the sewage cavity, and a filter plate is provided in the middle of the partition. The clean water cavity and the sewage cavity are connected to each other through the filter plate; A filter press is installed on the sewage tank through a bracket, and the output end of the filter press extends into the sewage chamber through a pipeline; A diaphragm pump is installed on a side of the sewage chamber away from the clean water tank, and an output end of the diaphragm pump is connected to an input end of the filter press.

2. The sewage recycling device for a tunnel shield machine according to claim 1, characterized in that: A soil bucket is provided between the sewage chamber and the filter press, a slide rail is fixedly provided on the top of the sewage tank by bolts, a slide seat is slidably provided on the slide rail, the soil bucket is fixedly connected to the slide seat, a motor is provided on the partition, the fixed end of the motor is fixedly connected to the partition, a screw rod is provided for transmission connection at the output end of the motor, a slider is threadedly provided on the screw rod, and the top of the slider is fixedly connected to the soil bucket.

3. The sewage recycling device for a tunnel shield machine according to claim 1 is characterized in that: The air pipe of the diaphragm pump is connected to the air pump of the shield machine, the input end of the diaphragm pump is connected to a sewage pipe, a filter is arranged in the sewage pipe, and a liquid level meter is arranged on one side of the filter.

4. The sewage recycling device for a tunnel shield machine according to claim 3 is characterized in that: A cylinder support is provided on the top of the clear water tank, a hydraulic cylinder is provided on the cylinder support, the hydraulic cylinder is fixedly connected to the cylinder support, a hydraulic oil pipe of the hydraulic cylinder is connected to the hydraulic pump of the shield machine, and the hydraulic cylinder is used to drive the filter press to work.

5. The sewage recycling device for a tunnel shield machine according to claim 4 is characterized in that: The clean water tank is provided with a high liquid level gauge and a low liquid level gauge, the high liquid level gauge and the low liquid level gauge are used to detect the liquid level height in the clean water cavity, and a water outlet pipe is provided on one side of the low liquid level gauge, and the water outlet pipe is connected to the clean water cavity.

6. The sewage recycling device for a tunnel shield machine according to claim 5, characterized in that: The height of the water outlet pipe on the clean water tank is lower than the height of the low liquid level meter on the clean water tank.

7. The sewage recycling device for a tunnel shield machine according to claim 6 is characterized in that: A booster pump is provided on the side of the water outlet pipe away from the clean water tank. The input end of the booster pump is communicated with the water outlet pipe, and the output end thereof is connected with a water pipe, and a pressure control valve is provided on the water pipe.

8. The sewage recycling device for a tunnel shield machine according to claim 5, characterized in that: An electrical control cabinet is provided on a side of the clean water tank away from the sewage tank, and the electrical control cabinet is connected with the electromagnetic valve of the hydraulic cylinder, the diaphragm pump, the high liquid level gauge and the low liquid level gauge by electrical signals.

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