Shield tunneling machine sewage tank facilitating residue filtering and removing

Abstract

The utility model discloses a shield tunneling machine sewage tank convenient for residue filtering and removing, which comprises a sewage tank body, a filtering and residue discharging mechanism is arranged at a liquid inlet on one side of the sewage tank body, a flow guide inclined plate, a stirring mechanism and a mud-water separation mechanism are sequentially arranged in the sewage tank body along the sewage flowing direction, and a flushing mechanism is further arranged in the sewage tank body. The flushing mechanism corresponds to the flow guide inclined plate, the bottom of the sewage tank body is provided with a sewage collecting plate corresponding to the sewage outlet of the sewage tank body, and the other side of the sewage tank body is provided with a sewage outlet. The sewage tank solves the problem that mud residue soil is easily deposited in the tank body after the sewage tank is operated for a long time to collect sewage, so that the filtering residue discharging mechanism, the stirring system, the partition plate and the inclined bottom plate are additionally arranged in the original sewage tank, the sewage collecting plate is additionally arranged at the sewage discharging position of the sewage tank, and on the basis of ensuring that the working process and principle of the sewage tank are basically kept unchanged, the sewage tank is simple in structure and convenient to operate. Slurry deposition is reduced, and the operation time of the sewage tank is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine sewage tanks, in particular to a shield machine sewage tank which is convenient for filtering and cleaning slag. Background Art

[0002] During the construction of the shield machine, a large amount of industrial wastewater will be generated due to the cleaning of the pipe segments, grouting pipes and equipment. Generally, a sewage tank is installed on the trailer at the rear of the supporting equipment. After the sewage is pumped into the sewage tank, it is discharged out of the tunnel through a pump.

[0003] Existing sewage tank structures only function to collect and store sewage. After a period of operation, some of the mud and debris in the sewage will settle at the bottom of the sewage tank, affecting subsequent use and requiring manual cleaning and removal. However, the space inside the shield machine construction tunnel is small and the environment is relatively harsh, resulting in certain safety hazards for manual work. To address this problem, existing technologies such as Chinese Patent Publication No. CN219452104 U propose a sewage tank structure that is less prone to sedimentation. However, mud sedimentation is inevitable during construction, and the problem of filtering and removing the debris carried by the sewage is difficult to solve. Chinese Patent Publication No. CN21632396U proposes a sewage tank that can automatically clean, but this only uses blades to scrape away the mud on the side walls of the sewage tank. The mud remains in the sewage tank and may still accumulate at the bottom. In summary, it is necessary to design a sewage tank that can filter and remove slag in a timely manner and is compatible with shield machines. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a shield machine sewage tank which is convenient for filtering and cleaning slag, thereby solving the problem in the prior art that the shield machine sewage tank is difficult to clean after slurry sedimentation.

[0005] The technical solution of the utility model is achieved as follows: a shield machine sewage tank that facilitates slag filtering and cleaning, comprising a sewage tank body, a slag filtering mechanism provided at a liquid inlet on one side of the sewage tank body, a guide ramp, a stirring mechanism, and a mud-water separation mechanism provided sequentially along the sewage flow direction within the sewage tank body, a flushing mechanism corresponding to the guide ramp, a sewage collecting plate corresponding to the sewage outlet provided at the bottom of the sewage tank body, and a sewage outlet provided on the other side of the sewage tank body. The slag filtering mechanism provides a first pass filtration for the sewage at the sewage inlet, filtering out large-particle mud, slag, etc. first, and after a period of continuous filtration, the accumulated silt is discharged through a slag conveying device.

[0006] Further preferably, the filtering and slag discharge mechanism includes a vibrating screen and a slag conveyor, the slag outlet of the vibrating screen is connected to the slag conveyor, and the liquid outlet of the vibrating screen is connected to the liquid inlet of the sewage tank; the guide inclined plate is obliquely arranged below the liquid inlet of the sewage tank.

[0007] Preferably, one end of the slag conveyor is connected to the vibrating screen, and the other end is connected to the sewage tank through a support rod.

[0008] Further preferably, the flushing mechanism includes a nozzle assembly arranged on the wall of the sewage tank body, the water inlet end of the nozzle assembly is connected to the external high-pressure water system, and the water outlet end of the nozzle assembly faces the guide inclined plate.

[0009] Further preferably, the stirring mechanism includes a motor reducer arranged on the sewage tank and a stirring blade arranged in the sewage tank, and the rotating shaft of the stirring blade is connected to the output end of the motor reducer.

[0010] Further preferably, the mud-water separation mechanism includes an upper baffle arranged at the top of the sewage tank body and a lower baffle arranged at the bottom of the sewage tank body, and the upper baffle and the lower baffle are staggered up and down to form a flow channel.

[0011] Preferably, an inclined bottom plate is provided between the two sides of the bottom of the lower partition and the inner bottom surface of the sewage tank body; and at least one cleaning cover plate is provided on the front side wall or the rear side wall of the sewage tank body.

[0012] Preferably, two sewage outlets are provided at the bottom of the sewage tank body, and the two sewage outlets are respectively close to the lowest sides of the two inclined bottom plates.

[0013] More preferably, the dirt collecting plate is a pull-out type dirt collecting plate. Specifically, the pull-out type dirt collecting plate comprises a fixed base and a pull-out tray, and the pull-out tray is slidably or rollingly arranged on the fixed base.

[0014] The beneficial effects of the present invention are as follows: compared with the existing sewage tank structure, the present invention solves the problem that mud and slag are easily accumulated in the tank after the sewage tank has been running for a long time to collect sewage. Therefore, this solution adds a filtering and slag discharge mechanism, a stirring system, a partition and an inclined bottom plate to the original sewage tank, and adds a sewage collection plate to the sewage tank discharge point. On the basis of ensuring that the working process and principle of the sewage tank remain basically unchanged, the mud accumulation is reduced, the operation time of the sewage tank is extended, thereby increasing the continuous operation time of the overall shield machine, reducing the downtime and maintenance time caused by dredging, and improving work efficiency. In addition, the inclined bottom plate and sewage collection plate in the present invention have low manufacturing costs and are easy to clean and replace, which greatly reduces the cost of use. The present invention has a compact structure and is highly compatible with the shield machine; the filtering and slag discharge mechanism of the present invention provides the first filtration for the sewage at the sewage inlet, filters the large-particle mud, slag, etc. first, and discharges slag outside the box, thereby improving the slag discharge efficiency. The stirring system changes the flow state of sewage, and the mud is not easy to accumulate into lumps; the mud-water separation mechanism uses partitions to change the flow direction, so that the mud and debris mixed in the sewage are settled under the action of gravity, thereby improving the sedimentation efficiency and further improving the sedimentation and slag discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

[0017] Figure 2 This is a schematic diagram of the structure of the sewage collecting plate of the utility model.

[0018] In the figure: slag conveyor 1, vibrating screen 2, motor reducer 3, stirring blade 4, upper partition 51, lower partition 52, cleaning cover 6, sewage tank 7, sewage collecting plate 8, fixed base 81, pull-out tray 82, inclined bottom plate 9, guide inclined plate 10, nozzle assembly 11, support rod 12, sewage outlet 13, sewage outlet 14. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1As shown in Example 1, a shield machine sewage tank for facilitating slag filtration and cleaning comprises a sewage tank 7. In this embodiment, a filter and slag discharge mechanism is provided at the liquid inlet on one side of the sewage tank 7. This filter and slag discharge mechanism filters the sewage entering the sewage tank and promptly discharges slag. Specifically, the filter and slag discharge mechanism provides a first pass of filtration for the sewage at the sewage inlet, preemptively filtering large particles such as mud and slag. After a period of continuous filtration, accumulated sludge is discharged via a slag conveyor outside the tank, achieving continuous filtration by the vibrating screen. This structure facilitates filtering large particles and discharging mud, preventing sludge accumulation at the bottom of the tank and facilitating slag discharge. Within the sewage tank 7, a guide ramp 10, a stirring mechanism, and a mud-water separator are sequentially arranged along the flow direction of the sewage. The sewage tank 7 also includes a flushing mechanism, which corresponds to the guide ramp 10. After passing through the filter and slag discharge mechanism, the sewage passes through the guide ramp 10, the stirring mechanism, and the mud-water separator, undergoing plate sedimentation, stirring, and gravity sedimentation, respectively. When the sludge on the guide ramp 10 settles to a certain level, it can be flushed and cleaned using a flushing mechanism. The bottom of the sewage tank 7 is equipped with a sewage collecting plate 8 corresponding to its sewage outlet 13. When the sludge in the sewage tank settles to a certain level, the sewage outlet at the bottom is opened for cleaning. In this embodiment, the other side of the sewage tank 7 is equipped with a sewage outlet 14 for the timely discharge of sewage. If needed, a liquid level sensor can be installed inside the sewage tank to monitor the amount of sewage inside and promptly control the opening and closing of the sewage outlet to ensure safe use of the sewage tank.

[0021] In this embodiment, the filtering and slag removal mechanism preferably includes a vibrating screen 2 and a slag conveyor 1. The slag outlet of the vibrating screen 2 is connected to the slag conveyor 1, and the liquid outlet of the vibrating screen 2 is connected to the liquid inlet of the sewage tank 7. The guide ramp 10 is tilted and arranged below the liquid inlet of the sewage tank 7. The vibrating screen is located at the sewage inlet. The collected sewage first passes through the vibrating screen. Under the action of the screen frame vibration, larger particles such as mud are retained on the screen filter and discharged along the slag conveyor. They are then transported to a designated location via a belt conveyor. The filtered sewage and the finer particles carried by it flow into the sewage tank. In this way, the sewage entering the sewage tank 7 is filtered and the slag is discharged outside the tank.

[0022] Preferably, the slag conveyor 1 in this embodiment is connected to the vibrating screen 2 at one end and to the sewage tank 7 at the other end via a support rod 12. Preferably, the end of the slag conveyor 1 connected to the vibrating screen 2 may adopt a hinged structure, and the support rod may be a retractable device, so that the angle of the slag conveyor 1 can be adjusted according to actual conditions to facilitate the discharge of mud.

[0023] Example 2, a shield machine sewage tank for facilitating slag removal and slag filtration, is described. Based on Example 1, the flushing mechanism preferably includes a nozzle assembly 11 mounted on the wall of the sewage tank 7. The water inlet of nozzle assembly 11 is connected to an external high-pressure water system, and the water outlet of nozzle assembly 11 faces the guide ramp 10. The guide ramp 10 is tilted to facilitate the sedimentation of particulate matter. Once a certain amount of silt accumulates on the guide ramp 10, it is cleaned and flushed by nozzle assembly 11 to prevent clogging. If needed, nozzle assembly 11 can also be a rotating nozzle, capable of high-pressure water flushing of the guide ramp 10 and other locations within the sewage tank 7.

[0024] In this embodiment, the stirring mechanism preferably includes a motor reducer 3 mounted on the sewage tank 7 and a stirring blade 4 disposed within the sewage tank 7. The rotating shaft of the stirring blade 4 is connected to the output end of the motor reducer 3. The motor reducer 3 drives the stirring blade 4 to rotate within the sewage tank via the rotating shaft, forming a stirring system. Under the action of the stirring system, the mud entrained in the sewage is less likely to coagulate into lumps and accumulate at the bottom of the tank; it can then be smoothly discharged through the sewage outlet.

[0025] Example 3, a shield machine sewage tank that is convenient for filtering and cleaning slag. Based on Example 1 or 2, the mud-water separation mechanism includes an upper partition 51 set at the top of the sewage tank body 7 and a lower partition 52 set at the bottom of the sewage tank body 7. The upper partition 51 and the lower partition 52 are staggered up and down to form a circulation channel. The upper partition 51 and the lower partition 52 divide the interior of the sewage tank into two chambers. The left sedimentation chamber is equipped with a stirring assembly; the right side is a slurry discharge chamber. The slurry discharge chamber is provided with a sewage outlet connected to a sewage pump, which is introduced into the sewage pipe through a delivery pump and led out of the tunnel. The partitions are staggered up and down to divide the entire sewage tank body into two chambers, while changing the flow direction of the sewage. The sewage flows upward under the action of the pump, and the mud, particulate matter, etc. carried therein are separated from the water flow by gravity, achieving rapid sedimentation.

[0026] Preferably, inclined bottom plates 9 are provided between the bottom sides of the lower baffle 52 and the inner bottom surface of the sewage tank 7. Two drainage outlets 13 are provided at the bottom of the sewage tank 7, each located near the lowest side of the two inclined bottom plates 9. The inclined bottom plates are arranged at an angle on either side of the baffle to prevent mud from accumulating in the dead corners of the baffle bottom. Deposited mud accumulates along the inclined bottom plates near the drainage outlets at the bottom of the sewage tank. After the water in the sewage tank is drained, the drainage outlets are opened, and the mud and debris at the bottom of the sewage tank fall onto the tray.

[0027] In addition, at least one cleaning cover plate 6 is provided on the front side wall or the rear side wall of the sewage tank body 7. After a period of continuous construction, the mud that is difficult to settle and discharge can be cleaned manually through the cleaning cover plate.

[0028] As a preferred solution, Figure 2As shown, the sewage collecting plate 8 is a pull-out type sewage collecting plate. Located below the sewage outlet, when the sewage outlet is opened, the mud in the box enters the tray. The tray is removable, which is convenient for timely cleaning. Specifically, the pull-out type sewage collecting plate includes a fixed base 81 and a pull-out tray 82. The pull-out tray 82 is slidably or rollingly set on the fixed base 81. The fixed base 81 provides support for the pull-out tray 82. As an option, a sliding guide rail can be provided on the fixed base 81, and the pull-out tray 82 can slide along the sliding guide rail, which facilitates the extraction and timely disposal of the sludge on the pull-out tray 82.

[0029] Compared with existing sewage tank structures, this sewage tank structure solves the problem of mud and debris easily accumulating inside the tank after the sewage tank has been running for a long time to collect sewage. Therefore, this solution adds a primary screening device, a stirring system, a partition, and a slanted bottom plate to the original sewage tank, and adds a sewage collection box or a sewage collection plate at the sewage tank discharge point. While ensuring that the working process and principle of the sewage tank remain basically unchanged, it reduces mud accumulation and extends the operation time of the sewage tank, thereby increasing the continuous operation time of the overall shield machine, reducing downtime and maintenance time due to dredging, and improving work efficiency. At the same time, compared with common sewage tank structures, the slanted bottom plate and sewage collection plate in this utility model are low in production cost and easy to clean and replace, greatly reducing the cost of use.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sewage tank for a shield machine that is convenient for filtering and cleaning slag, comprising a sewage tank body (7), characterized in that: A filtering and discharging mechanism is provided at the liquid inlet on one side of the sewage tank (7); a guide inclined plate (10), a stirring mechanism and a mud-water separation mechanism are provided in sequence in the sewage tank (7) along the sewage flow direction; a flushing mechanism is also provided in the sewage tank (7), the flushing mechanism corresponding to the guide inclined plate (10); a sewage collecting plate (8) corresponding to the sewage outlet (13) is provided at the bottom of the sewage tank (7); and a sewage outlet (14) is provided on the other side of the sewage tank (7).

2. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 1 is characterized in that: The filtering and slag discharge mechanism comprises a vibrating screen (2) and a slag conveyor (1); the slag discharge port of the vibrating screen (2) is connected to the slag conveyor (1); the liquid outlet of the vibrating screen (2) is connected to the liquid inlet of the sewage tank (7); and the guide inclined plate (10) is arranged obliquely below the liquid inlet of the sewage tank (7).

3. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 2 is characterized in that: One end of the slag conveyor (1) is connected to the vibrating screen (2), and the other end is connected to the sewage tank (7) via a support rod (12).

4. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 1 is characterized in that: The flushing mechanism comprises a nozzle assembly (11) arranged on the wall of the sewage tank (7), the water inlet end of the nozzle assembly (11) being connected to an external high-pressure water system, and the water outlet end of the nozzle assembly (11) facing the guide inclined plate (10).

5. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 1 is characterized in that: The stirring mechanism comprises a motor reducer (3) arranged on the sewage tank (7) and a stirring blade (4) arranged in the sewage tank (7), wherein the rotating shaft of the stirring blade (4) is connected to the output end of the motor reducer (3).

6. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 1, 4 or 5, characterized in that: The mud-water separation mechanism comprises an upper baffle (51) arranged at the top of the sewage tank (7) and a lower baffle (52) arranged at the bottom of the sewage tank (7); the upper baffle (51) and the lower baffle (52) are arranged in an alternating manner up and down to form a circulation channel.

7. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 6 is characterized in that: An inclined bottom plate (9) is provided between the two sides of the bottom of the lower partition plate (52) and the inner bottom surface of the sewage tank body (7); and at least one cleaning cover plate (6) is provided on the front side wall or the rear side wall of the sewage tank body (7).

8. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 7 is characterized in that: The bottom of the sewage tank (7) is provided with two sewage outlets (13), and the two sewage outlets (13) are respectively close to the lowest sides of the two inclined bottom plates (9).

9. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 1 or 8, characterized in that: The dirt collecting plate (8) is a pull-out type dirt collecting plate.

10. The shield machine sewage tank for facilitating slag filtering and cleaning according to claim 9, characterized in that: The pull-out type dirt collecting plate comprises a fixed base (81) and a pull-out tray (82), and the pull-out tray (82) is slidably or rollingly arranged on the fixed base (81).

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