A mud removal device for highway bridge subgrade and pavement construction

Abstract

This application provides a mud removal device for highway bridge subgrade and pavement construction, used for washing and removing mud from construction aggregates. It includes a support base, a washing chamber, and a spiral conveyor mechanism. The washing chamber is installed on the support base and has an inlet, an overflow outlet, a feed inlet, and a discharge outlet. An axial flow fan is installed inside the washing chamber to drive fluid to rise and overflow. The spiral conveyor mechanism is installed inside the washing chamber, with its spiral axis inclined to the ground. The discharge outlet is located at one end of the washing chamber along the spiral axis. The inlet, overflow weir, and feed inlet are located near the opposite end of the washing chamber along the spiral axis. The inlet, turbulence-prone section, overflow outlet, and discharge outlet are distributed sequentially along a first direction and gradually move away from the first plane. A preset distance is provided between the turbulence-prone section and the spiral conveyor mechanism. Compared with the prior art, this application can promote water flow upward, reduce mud deposition, and effectively improve the washing effect.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a mud removal device for highway bridge subgrade and pavement construction. Background Technology

[0002] The building materials used in highway bridge subgrade and pavement construction need to be cleaned and desilted. Workers often use trough-type stone washing machines for this purpose, such as those described in patent document CN201220136057.0. In this system, the mud rubbed off by the tumbling of the stones is dissolved by water on their surface, forming a slurry. An overflow outlet is located at the middle height of the equipment to discharge the slurry. The stones are then conveyed upwards to the highest point, completely detached from the water surface, before being discharged. However, existing stone washing machines cannot effectively mix the slurry with clean water or water with a lower mud content. The low density of the clean water causes it to rise and overflow, while the slurry settles downwards due to gravity. This increases the likelihood of dirty water washing dirty stones, and mud being discharged with the stones, resulting in poor cleaning effectiveness. Utility Model Content

[0003] This application provides a mud removal device for highway bridge subgrade and pavement construction. By installing an underwater axial flow fan between the low-level spiral blades and the high-level overflow outlet at the feed end of the washing chamber, it can extract the dirty mud formed by the lower layer of washed stones, mix it upwards, or directly overflow it. This accelerates the upward flow of water and reduces the mud deposition phenomenon caused by slow natural upward flow, sufficient sedimentation time, and insufficient driving force for passive upward flow of mud. The water flow is refreshed quickly, making it difficult for mud to settle. This achieves the discharge of dirty water and washing of stones with fresh clean water. The risk of mud and stones being constantly in contact and carrying away material is reduced, which can effectively improve the cleaning effect.

[0004] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0005] A mud removal device for highway bridge subgrade and pavement construction, used for washing and removing mud from construction aggregates, comprising:

[0006] A support base, wherein the grounding side of the support base is provided with a first plane and a first direction perpendicular to the first plane;

[0007] A cleaning chamber is installed on the support base. The cleaning chamber is provided with an overflow weir. The cleaning chamber has an inlet, an overflow outlet at the top of the overflow weir, a feed inlet, and a discharge outlet. The cleaning chamber is provided with a turbulence-inducing part, which includes an underwater axial fan for driving the fluid away from the first plane. The axial direction of the axial fan intersects with the first plane.

[0008] A spiral conveyor mechanism is provided inside the cleaning chamber. The support base is used to connect to and support the cleaning chamber so that the spiral axis of the spiral conveyor mechanism inside is inclined to the first plane. The discharge port is located at one end of the cleaning chamber along the spiral axis. The water inlet, the overflow weir, and the feed inlet are close to the opposite end of the cleaning chamber along the spiral axis. The water inlet, the turbulence section, the overflow outlet, and the discharge port are distributed sequentially along the first direction and gradually move away from the first plane. A preset distance is provided between the turbulence section and the spiral conveyor mechanism.

[0009] Compared to existing technologies, this application, by setting an inlet at the lowest point of the cleaning chamber, uses the initial velocity and impact force of the incoming water flow to promote the upward flow and mixing of potentially deposited mud, allowing it to overflow or be directly mixed by the incoming clean water. By setting an underwater axial flow fan between the low-level spiral blades and the high-level overflow outlet at the feed end of the cleaning chamber, the dirty mud formed by the lower layer of cleaned stones can be extracted, mixed, or directly overflowed, accelerating the upward flow of water and reducing mud deposition caused by slow natural upward flow, sufficient sedimentation time, and insufficient driving force for passive upward flow of mud. The water flow is refreshed quickly, making it difficult for mud to settle, achieving the discharge of dirty water and washing of stones with fresh clean water. The risk of mud and stones being constantly in contact and carrying away material is reduced, effectively improving the cleaning effect.

[0010] In one embodiment of this application, an outer casing is installed outside the axial fan, and the blades of the axial fan rotate within the cavity of the outer casing, driving fluid to flow along its rotation axis. The outer casing is provided with a plurality of second openings for fluid to pass through, and the outer casing is used to trap stone.

[0011] In one embodiment of this application, the turbulence section further includes a vibrator.

[0012] In one embodiment of this application, the discharge port is located at one end of the cleaning chamber away from the first plane along the spiral axis, and at the side of the cleaning chamber close to the first plane along the first direction.

[0013] In one embodiment of this application, the discharge port is provided with a discharge hopper, the discharge hopper is funnel-shaped, the funnel-shaped axis of the discharge hopper is consistent with the first direction, and the wider end of the funnel-shaped discharge hopper is matched and connected to the discharge port.

[0014] In one embodiment of this application, the overflow outlet is provided with a water outlet pipe, one end of which is connected to the overflow outlet, and the other end is detachably connected to a screen.

[0015] In one embodiment of this application, a second observation window is provided at the end of the water outlet pipe away from the overflow outlet, for observing the interception situation of the screen located on the side inside the water outlet pipe. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A front view of a mud removal device for highway bridge subgrade and pavement construction provided in an embodiment of this application;

[0018] Figure 2 for Figure 1 A partial enlarged view of the embodiment;

[0019] Figure 3 A side view of a mud removal device for highway bridge subgrade and pavement construction provided in an embodiment of this application;

[0020] Figure 4 for Figure 1 Enlarged view of a portion of the water supply pipe during normal water intake in the embodiment;

[0021] Figure 5 for Figure 1 A partial enlarged view of the water supply pipeline when the second driving device is used to restart the pipeline in the embodiment;

[0022] Figure 6 for Figure 4 A partial enlarged view of the embodiment;

[0023] Figure 7 for Figure 6 A partial enlarged view of the embodiment;

[0024] Figure 8 for Figure 4 A top view of the connecting part provided in the embodiment;

[0025] Figure 9 This is a partially enlarged view of one end of a water outlet pipe provided in an embodiment of this application;

[0026] Figure 10 A structural diagram of the intercepting side of a sieve provided in an embodiment of this application;

[0027] Figure 11 This is a front view of a mud removal device for highway bridge subgrade and pavement construction provided in an embodiment of this application.

[0028] Figure label:

[0029] The components include: a cleaning chamber 100, a feed inlet 110, a discharge outlet 120, a discharge hopper 121, a water inlet 130, an overflow outlet 140, a brush 150, a first observation window 160, a screw conveyor mechanism 200, a water tank 310, a first drive device 320, a water supply pipe 330, a first opening 331, a branch pipe 340, a connecting part 341, a valve 342, a second drive device 350, an output shaft 351, a cover 360, an elastic part 361, a lifting assembly 370, an axial flow fan 410, an outer casing 411, a vibrator 420, a water outlet pipe 510, a second observation window 511, a screen 520, a sedimentation tank 530, and a stone material 600. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0031] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] Figure 1 A front view of a mud removal device for highway bridge subgrade and pavement construction provided in an embodiment of this application; Figure 2 for Figure 1 A partial enlarged view of the embodiment; Figure 3 for Figure 1 Side view of the embodiment; Figure 4 for Figure 1 Enlarged view of a portion of the water supply pipe during normal water intake in the embodiment; Figure 5 for Figure 1 Enlarged view of a portion of the water supply pipeline when the second driving device is used to restart the pipeline in the embodiment; Figure 6 for Figure 4 A partial enlarged view of the embodiment shows the snap-fit ​​sealing structure between the cap and the first opening; Figure 7 for Figure 6 A partial enlarged view of the embodiment shows the location of the elastic part; Figure 8 for Figure 4 A top view of the connecting part provided in the embodiment; Figure 9 This is a partially enlarged view of one end of a water outlet pipe provided in an embodiment of this application; Figure 10 A structural diagram of the intercepting side of a sieve provided in an embodiment of this application; Figure 11 This is a front view of a mud removal device for highway bridge subgrade and pavement construction provided in an embodiment of this application.

[0035] Embodiments of this application provide a mud removal device for highway bridge subgrade and pavement construction, used for washing and removing mud from construction aggregate 600, including:

[0036] The support base has a first plane and a first direction perpendicular to the first plane on its grounding side;

[0037] A cleaning chamber 100 is mounted on a support base. The cleaning chamber 100 includes an overflow weir, an inlet 130, an overflow outlet 140 at the top of the overflow weir, a feed inlet 110, and a discharge outlet 120. The inlet 130 is suitable for connection to the output end of a water delivery device. The cleaning chamber 100 contains a flow-turbing section to agitate the fluid and prevent mud from settling downwards. The flow-turbing section includes an underwater axial flow fan 410, the axis of which intersects a first plane. Furthermore, the axial direction of the axial flow fan 410 is aligned with a first direction. The axial flow fan 410 causes the water to flow upwards along the first direction, away from the first plane, preventing mud from settling due to gravity and improving the mud-stone separation effect.

[0038] The spiral conveyor 200 is provided inside the cleaning chamber 100. The support base is used to connect and support the cleaning chamber 100 so that the spiral axis of the spiral conveyor 200 inside is inclined to the first plane. The discharge port 120 is located at one end of the cleaning chamber 100 along the spiral axis. The water inlet 130, the overflow weir and the feed inlet 110 are close to the opposite end of the cleaning chamber 100 along the spiral axis. The water inlet 130, the turbulence part, the overflow outlet 140 and the discharge port 120 are distributed in sequence along the first direction and gradually move away from the first plane. A preset distance is provided between the turbulence part and the spiral conveyor 200.

[0039] It should be noted that the first plane is a virtual plane preset for ease of understanding and installation, and has no physical form; it should not be construed as a limitation of this application. In this mechanism, the base is grounded and supports the cleaning chamber 100, the first plane coincides with the horizontal plane of the ground, and the first direction is parallel to or coincides with the straight line of the direction of gravity. The spiral blades inside the cleaning chamber 100 are inclined and set to the horizontal plane, with the spiral blades at the feed end of the cleaning chamber 100 inclined towards the ground and the spiral blades at the discharge end away from the ground. The mud removal device for roadbed and pavement construction of this highway bridge is a trough-type stone washing machine, with the spiral blades axially inclined, and the stone material 600 entering from the bottom and exiting from the top. The trough of the trough-type stone washing machine is located at the feed end of the cleaning chamber 100, and is used for water intake, water storage, washing of the stone material 600 (soaking and tumbling impact under the action of the spiral conveyor device), and drainage. Driven by the spiral conveyor mechanism 200, the stone 600 is first completely immersed in water and washed by tumbling and impacting from entry to exit. Then it is rotated in and out of the water surface and washed by tumbling and impacting until the stone 600 is above the water surface and continues to be conveyed for a certain length. Finally, it is sent out of the cleaning chamber 100 through the discharge port 120 for collection.

[0040] Compared to existing technologies, this application, by setting an inlet 130 at the lowest point of the cleaning chamber 100, uses the initial velocity and impact force of the incoming water flow to promote the continued upward flow and mixing of potentially deposited mud, or to directly mix it with the incoming clean water. By setting an underwater axial flow fan 410 between the low-level spiral blades and the high-level overflow outlet 140 at the feeding end of the cleaning chamber 100, the dirty mud formed by the lower layer of cleaning stones 600 can be extracted and mixed upward or directly overflowed, accelerating the upward flow of water and reducing the mud deposition phenomenon caused by slow natural upward flow, sufficient sedimentation time, and insufficient driving force for the passive upward flow of mud. The water flow is refreshed quickly, making it difficult for mud to deposit, realizing the discharge of dirty water and washing of stones with fresh clean water. The risk of mud and stones always being in contact and carrying away material is reduced, which can effectively improve the cleaning effect.

[0041] In some embodiments, an outer casing 411 is installed outside the axial fan 410. The blades of the axial fan 410 rotate within the cavity of the outer casing 411, driving fluid to flow along its rotational axis. The outer casing 411 has several second openings for fluid passage and is used to trap stones. The turbulence section also includes a vibrator 420 for turbulence, causing water flows to collide and converge, preventing the separation of clear slurry of different densities, ensuring uniformity, and preventing the phenomenon of water leaving mud.

[0042] In some embodiments, the inner wall of the cleaning chamber 100 is provided with a brush 150. The brush 150 is a flexible cleaning brush. The stones 600 continuously move axially under the action of the spiral conveyor and continuously tumble during this axial movement, impacting the inner wall of the cleaning chamber 100 and rubbing against each other to separate the mud from the stones. The mud separated from the stones 600 dissolves in water, and the fluid with a certain entrainment force generated by the rotating spiral blades / axial flow fan 410 / vibrator 420 carries the mud away and overflows. The brush 150 enhances the separation of mud and stone during the friction process, using stronger friction and closer contact to clean the stones 600 more thoroughly. Preferably, with the first plane as the ground, the brush 150 is provided on the inner wall of the cleaning chamber 100, below the height of the overflow weir crest, along the first direction. If the inner wall of the washing chamber 100 is higher than the top of the overflow weir, but a point on the plane along the radial direction of the spiral blades is lower than the top of the overflow weir (located underwater), then this part of the inner wall of the washing chamber 100 can also be equipped with brushes 150 to coarsely separate the mud and stones through friction. Further separation will occur when the stone material 600 enters the water following the rotation of the spiral blades. Furthermore, if the inner wall of the washing chamber 100 around the inlet 110 and overflow outlet 140 of the trough-type stone washing machine is far from the spiral blades of the spiral conveyor, then brushes 150 are not required on this part of the inner wall. Brushes 150 can be installed on the remaining inner walls of the washing chamber 100 below the lowest point of the overflow outlet 140.

[0043] In some embodiments, the discharge port 120 is located at one end of the cleaning chamber 100 away from the first plane along the spiral axis, and on the side of the cleaning chamber 100 close to the first plane along the first direction.

[0044] In some embodiments, the discharge port 120 is provided with a discharge hopper 121, which is funnel-shaped. The funnel-shaped axis of the discharge hopper 121 is consistent with the first direction, and the wider end of the funnel-shaped discharge hopper 121 is matched and connected with the discharge port 120.

[0045] In some embodiments, the overflow outlet 140 is provided with a water outlet pipe 510, one end of which is connected to the overflow outlet 140, and the other end is detachably connected to a screen 520.

[0046] Furthermore, one end of the water outlet pipe 510 is detachably connected to the overflow outlet 140 of the cleaning chamber 100. The cleaning chamber 100 is provided with a first observation window 160 on the side wall of the end closest to the first plane along the spiral axis, for observing the situation inside the chamber between the water inlet 130 and the overflow outlet 140 along the first direction. The end of the water outlet pipe 510 away from the overflow outlet 140 is provided with a second observation window 511, for observing the interception situation of the screen 520 located on the side inside the water outlet pipe 510. If, during stone washing operations, the water inlet is sufficient and water continues to flow in after overflowing from the overflow outlet 140, but no water is observed flowing out of the outlet pipe 510 or the water flow is abnormally reduced, check through the second observation window 511 whether small stones 600 / mud lumps impacted by the fluid are clogging the screen 520, or whether the water flow is blocked. Also, observe the water level in the washing chamber 100 through the first observation window 160 to determine whether the problem is with the water flow, the outlet blockage, or the water level in the washing chamber 100. If the water level in the first observation window 160 is sufficient but there is no water flow in the second observation window 511, remove the outlet pipe 510 from the overflow outlet 140 to check whether the overflow outlet 140 is blocked or the front end of the outlet pipe 510 is blocked. If the water level in the first observation window 160 is sufficient, and there is water flow in the second observation window 511 but it is blocked by stones 600 / mud lumps / clumps of silt trapped by the screen 520, the screen 520 can be removed. If the first observation window 160 shows that the water level in the tank is insufficient and the inlet 130 is blocked, the pump speed of the water delivery device at the inlet 130 can be increased or other operations can be performed to increase the initial velocity and impact force of the incoming water flow. The speed of the screw conveyor can also be increased, or the device can be paused to clear the blockage.

[0047] In some embodiments, a water delivery device is also included, which is provided with a first driving device 320 for driving the water in the water delivery device to be output from the output end of the water delivery device and enter the cleaning chamber 100 from the inlet 130 with a certain initial velocity and impact force.

[0048] Furthermore, the water delivery device includes a water tank 310, a water delivery pipe 330, a first drive device 320, and a second drive device 350. One tubular end of the water delivery pipe 330 is inserted into the water tank 310, so that the water delivery channel of the water delivery pipe 330 is connected to the water storage cavity of the water tank 310. The other tubular end of the water delivery pipe 330 is matched and connected to the water inlet 130. The axial direction of the tubular water delivery pipe 330 is consistent with the helical axis of the screw conveyor.

[0049] The first driving device 320 is installed at one end of the water supply pipe 330 near the water tank 310. The first driving device 320 is used to drive water flow from the water tank 310 along the tubular channel to the inlet 130, thereby entering the cleaning chamber 100. The first driving device 320 can be a driving pump installed inside the water supply pipe 330, which drives the water flow along the tubular channel by the rotation of the pump. The structure of the driving pump, how it is connected to the pipe, how it drives the water flow, and how it adjusts the water flow rate and velocity by its own rotation speed are conventional technologies that can be implemented by those skilled in the art. This application does not make any structural improvements here, so they will not be described in detail here.

[0050] A branch pipe 340 is provided at one end of the water supply pipe 330 near the inlet 130. That is, the side wall of the end of the water supply pipe 330 near the inlet 130 has a first opening 331, and the tubular opening of the branch pipe 340 is connected to the first opening 331 of the water supply pipe 330. The inner wall of the end of the branch pipe 340 away from the water supply pipe 330 protrudes inward to form a connecting part 341. Along the tubular axis of the branch pipe 340, there is a first gap between the connecting part 341 and the first opening 331. Therefore, the opening surface (top) of the first opening 331, the inner wall (side) of the end of the branch pipe 340 near the water supply pipe 330, and the connecting part 341 (bottom) form an installation chamber. The bottom of the installation chamber is not necessarily completely closed. That is, the branch pipe 340 has a second plane, and the tubular axis of the branch pipe 340 is perpendicular to the second plane. The outer edge of the projection of the connecting part 341 on the second plane does not necessarily coincide with the entire circumference of the inner wall of the branch pipe 340. It can coincide completely or only partially. As long as the connecting part 341 protrudes inward to form a fixed installation position, it can provide leverage for the bottom of the lifting assembly 370.

[0051] The second drive device 350 is installed in the mounting chamber of the aforementioned branch pipe 340. The second drive device 350 is mounted on the connecting part 341 via the lifting assembly 370. The end of the second drive device 350 facing away from the lifting assembly 370 has a cap 360 that matches the first opening 331. The mating surfaces of the cap 360 and the first opening 331 are all provided with elastic portions 361, and the inner wall of the first opening 331 is also provided with elastic portions 361. As the second drive device 350 descends, the cap 360 is fastened to the first opening 331, using the elastic expansion and contraction of the elastic portions 361 to seal the joint gap between the first opening 331 and the cap 360. The side of the cap 360 facing away from the second drive device 350 matches the inner wall of the water supply pipe 330. This means that when the second drive device 350 descends until the cap 360 is fastened to seal the first opening 331, the top surface of the cap 360 is flush with the inner wall of the water supply pipe 330, without any obvious corner protrusions or concavities. The second drive unit 350 is a waterproof motor / hydraulic device / other drive unit that drives the linear displacement and extension of its output shaft 351. The lifting assembly 370 is a waterproof lifting assembly that can actively lift and lower, adjust to a set height, lower and reset, and receive commands from an external controller to perform lifting tasks. For example, a motor wirelessly connected to an external main controller to receive control commands can linearly extend and retract its motor shaft; the second drive unit 350 is fixedly connected to this motor shaft and follows its linear extension and retraction. The lifting direction of the lifting assembly 370 is consistent with the tubular axis of the branch pipe 340. The linear displacement direction of the output shaft 351 of the second drive unit 350 is consistent with the tubular axis of the water supply pipe 330.

[0052] During normal operation, the lifting assembly 370 remains stationary, the output shaft 351 of the second drive device 350 is retracted to its shortest length, and the cover 360 is fastened to the first opening 331, sealing the cover 360 and the first opening 331 to isolate the branch pipe 340 from the water supply pipe 330. At this time, the side of the cover 360 facing away from the second drive device 350 is flush with the inner wall of the water supply pipe 330, and the water supply device outputs water normally.

[0053] If the operator discovers an abnormality in the water intake during the stone washing process, such as observing a blockage in the inlet 130 through the first observation window 160, or finding that water cannot be delivered into the water supply pipe 330 (the water level in the water tank 310 does not drop, the pump cannot turn, and the pressure sensor inside the water supply pipe 330 shows high pipe pressure), a control command is sent to the lifting assembly 370. The lifting assembly 370 lifts the second drive device 350 and the cover 360 so that the second drive device 350 rises away from the branch pipe 340 and enters the water supply pipe 330 until the output shaft 351 rises to the preset position (even if it extends, there is still a gap between it and the inner wall of the water supply pipe 330, so that it is not blocked or limited). Preferably, the axis of the output shaft 351 coincides with the tubular axis of the water supply pipe 330, and the distance from the end of the cover 360 furthest away from the second drive device 350 to the axis of the output shaft 351 is less than 1 / 2 of the inner diameter of the water supply pipe 330. The outer diameter of the output shaft 351 of the second drive device 350 is smaller than the inner diameter of the water supply pipe 330. The output shaft 351 extends from the water supply pipe 330 and the water inlet 130 into the cleaning chamber 100, mechanically pushing away the blockage and clearing the water inlet 130. Preferably, the tubular axis of the water supply pipe 330 is aligned with the first direction.

[0054] This application does not specifically limit how to prevent a large amount of water in the water tank 310 from flowing out of the branch pipe 340 when the second drive device 350 mechanically re-opens the water inlet 130. When re-opening is required, the first drive device 320 can be closed first, and then the cover 360 and the second drive device 350 can be raised. Alternatively, a valve 342 can be installed in the branch pipe 340. The closing of valve 342 when the cover 360 is raised prevents water loss from the water tank 310. The opening of valve 342 when the cover 360 re-seals the first opening 331 (re-isolating the water supply pipe 330 and the branch pipe 340) drains water from the branch pipe 340, preventing prolonged soaking from affecting the equipment's service life. Specifically:

[0055] In some embodiments, both the second drive device 350 and the lifting assembly 370 are waterproof devices. Furthermore, the connecting portion 341 has two or more through holes for draining water from the installation chamber. One end of the branch pipe 340 facing away from the first plane is connected to the first opening 331 of the water supply pipe 330, while the other end faces the first plane. The tubular axis of the branch pipe 340 is aligned with the first direction. A valve 342 is provided at the end of the branch pipe 340 facing away from the first opening 331. This valve closes when the cover 360 is raised and no longer seals the first opening 331, preventing water loss from the water tank 310. It also opens when the cover 360 re-seals the first opening 331, allowing water to be drained from the branch pipe 340 by gravity.

[0056] In some embodiments, a settling tank 530 is also included, with one end of the effluent pipe 510, away from the overflow outlet 140, connected to the inlet of the settling tank 530. The overflowing sludge enters the settling tank 530 through the effluent pipe 510, where it is allowed to settle and is then discharged separately to meet environmental wastewater discharge requirements, or the supernatant can be reused for stone washing or other water applications in construction. This application does not specify a particular method for the sludge settling in the settling tank 530; it can be allowed to settle naturally, or reagents can be used to rapidly deposit the sludge in the settling tank 530.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A mud removal device for highway bridge subgrade and pavement construction, used for washing and removing mud from construction aggregates, characterized in that, include: A support base, wherein the grounding side of the support base is provided with a first plane and a first direction perpendicular to the first plane; A cleaning chamber is installed on the support base. The cleaning chamber is provided with an overflow weir. The cleaning chamber has an inlet, an overflow outlet at the top of the overflow weir, a feed inlet, and a discharge outlet. The cleaning chamber is provided with a turbulence-inducing part, which includes an underwater axial fan for driving the fluid away from the first plane. The axial direction of the axial fan intersects with the first plane. A spiral conveyor mechanism is provided inside the cleaning chamber. The support base is used to connect to and support the cleaning chamber so that the spiral axis of the spiral conveyor mechanism inside is inclined to the first plane. The discharge port is located at one end of the cleaning chamber along the spiral axis. The water inlet, the overflow weir, and the feed inlet are close to the opposite end of the cleaning chamber along the spiral axis. The water inlet, the turbulence section, the overflow outlet, and the discharge port are distributed sequentially along the first direction and gradually move away from the first plane. A preset distance is provided between the turbulence section and the spiral conveyor mechanism.

2. The mud removal device for highway bridge subgrade and pavement construction according to claim 1, characterized in that, An outer casing is installed outside the axial flow fan. The blades of the axial flow fan rotate inside the cavity of the outer casing, driving the fluid to flow along its rotation axis. The outer casing is provided with several second openings for the fluid to pass through. The outer casing is used to trap stone.

3. The mud removal device for highway bridge subgrade and pavement construction according to claim 1, characterized in that, The turbulence-disrupting part also includes a vibrator.

4. The mud removal device for highway bridge subgrade and pavement construction according to claim 1, characterized in that, The discharge port is located at one end of the cleaning chamber away from the first plane along the spiral axis, and on the side of the cleaning chamber close to the first plane along the first direction.

5. The mud removal device for highway bridge subgrade and pavement construction according to claim 4, characterized in that, The discharge port is provided with a discharge hopper, which is funnel-shaped. The funnel-shaped axis of the discharge hopper is consistent with the first direction. The wider end of the funnel-shaped discharge hopper is matched and connected to the discharge port.

6. The mud removal device for highway bridge subgrade and pavement construction according to claim 1, characterized in that, The overflow outlet is equipped with a water outlet pipe, one end of which is connected to the overflow outlet, and the other end is detachably connected to a screen.

7. The mud removal device for highway bridge subgrade and pavement construction according to claim 6, characterized in that, A second observation window is provided at the end of the water outlet pipe away from the overflow outlet, for observing the interception situation of the screen located on the side inside the water outlet pipe.

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