A slurry hydraulic motor desludger

Abstract

The present application provides a kind of shield hydraulic motor deslimer, belong to shield machine technical field, to solve the problem that the hydraulic system of existing shield machine can produce a large number of wear particles in actual use, and wear particles can cause hydraulic system damage if not cleaned in time;It includes pipe body and filter device;Filter device includes filter screen, spiral pipe and inlet, inlet is located at one end of pipe body and is communicated with pipe body, filter screen is embedded in the other end inside pipe body, spiral pipe is arranged in pipe body, it is arranged along the axial direction of pipe body, one end of spiral pipe is communicated with inlet, the other end extends in the direction away from inlet, impurity collector is arranged on the inner wall of pipe body, and the outlet of spiral pipe faces impurity collector;In the present application, the separation effect of impurities is improved by the centrifugal rotation of liquid through the setting of spiral pipe, the self-cleaning ability of hydraulic system is enhanced, the service life of equipment is prolonged, the high-purity environment of hydraulic system is conducive to reducing the occurrence of failure and improving the reliability of equipment.

Description

Technical Field

[0001] This invention belongs to the field of tunnel boring machine technology, and specifically relates to a shield hydraulic motor slag remover. Background Technology

[0002] A tunnel boring machine (TBM), or shield tunneling machine for short, is a specialized engineering machine used for tunnel excavation. Modern TBMs integrate optics, mechanics, electronics, hydraulics, sensing, and information technology, possessing functions such as excavation and cutting of soil, transporting excavated material, assembling tunnel lining, and measurement and guidance correction. They involve multiple disciplines including geology, civil engineering, mechanical engineering, mechanics, hydraulics, electrical engineering, control, and surveying. Furthermore, they require customized design and manufacturing based on different geological conditions, demanding extremely high reliability. TBMs are widely used in tunnel projects for subways, railways, highways, municipal works, and hydropower projects.

[0003] We are familiar with the fact that the hydraulic system of a tunnel boring machine (TBM) is powered by a pump station to drive the cutterhead through the AB port of the main drive motor. The power is provided by the main drive pump through circulation and pressurization to drive the main drive motor. In actual use, TBMs often experience hydraulic shocks due to different geological formations. Frequent shocks cause friction between the pistons inside the motor and wear on the swashplate, generating a large number of wear particles. If these wear particles are not cleaned in time, they will damage the hydraulic system, and damage to the hydraulic system motor will lead to economic losses. Summary of the Invention

[0004] In view of this, the present invention provides a shield tunneling hydraulic motor deslag remover to solve the problem that existing shield tunneling machines often experience hydraulic shocks due to different geological formations during actual use. Frequent shocks cause friction between the internal pistons of the motor and wear on the swashplate, resulting in a large number of wear particles. If these wear particles are not cleaned in time, they will cause damage to the hydraulic system, leading to economic losses due to damage to the hydraulic system motor.

[0005] The technical solution adopted in this invention is as follows: A shield tunneling hydraulic motor slag remover includes a pipe body and a filter device. The filter device includes a filter screen, a spiral tube, and a liquid inlet. The liquid inlet is located at one end of the pipe body and communicates with the pipe body. The filter screen is embedded inside the other end of the pipe body. The spiral tube is disposed inside the pipe body and is arranged along the axial direction of the pipe body. One end of the spiral tube communicates with the liquid inlet, and the other end extends in a direction away from the liquid inlet. An impurity collector is provided on the inner wall of the pipe body, and the liquid outlet of the spiral tube faces the impurity collector.

[0006] In this technical solution, it should be noted that the spiral tube is a spiral-shaped tube body, and the liquid can rotate around the spiral tube, thereby making it easier for metal impurities to enter the deslagging device through eddy current. The spiral tube can be a flexible tube or a metal tube. The filter screen is used to filter impurities and prevent them from being discharged from the deslagging device. The impurity collector is used to collect the impurities flowing out of the spiral tube outlet. The principle of this solution is as follows: the deslagging device of this invention is installed in the hydraulic system of the tunnel boring machine. When the tunnel boring machine is working, the hydraulic system is started to drive the cutterhead to rotate. The liquid enters the spiral tube of the deslagging device through the inlet of the tube body. The liquid drives the metal impurities to rotate in the spiral tube and flows out from the outlet of the spiral tube. At this time, the impurity collector collects the impurities, and then the liquid flows out of the deslagging device through the filter screen. In summary, in this invention, the spiral tube configuration enables the liquid to rotate centrifugally, improving the impurity separation effect, enhancing the self-cleaning ability of the hydraulic system, extending the service life of the equipment, and the high purity environment of the hydraulic system helps to reduce the occurrence of failures and improve the reliability of the equipment.

[0007] Preferably, there are multiple spiral tubes, which are spaced apart circumferentially along the tube body.

[0008] In this technical solution, it should be noted that there are three spiral tubes, with an angular interval of 120° between them. Each of the three spiral tubes has an impurity collector at its outlet. The arrangement of three spiral tubes reduces the probability of clogging compared to a single spiral tube.

[0009] Preferably, the impurity collector is a magnet, and the outlet of the spiral tube faces the magnet.

[0010] In this technical solution, it should be noted that the magnet is composed of atoms such as iron, cobalt, and nickel, whose internal atomic structure is unique and inherently possesses magnetic moments. Magnets can generate magnetic fields and have the property of attracting ferromagnetic materials such as iron, nickel, and cobalt. In this solution, since most impurities are metallic, magnets are used to attract these metallic impurities. Furthermore, in this solution, the magnet and the tube are detachably connected, and all components on the tube are detachably connected to it, allowing workers to easily remove the magnet for cleaning.

[0011] Preferably, the filtration device consists of two sets, which are symmetrically arranged with the cross-section at the center of the pipe as the plane of symmetry. Each set of the filtration device has an opening through its filter screen, and a first one-way valve is provided at each opening. The two first one-way valves open and close in opposite directions, and the opening faces the inlet of the spiral pipe.

[0012] In this technical solution, it should be noted that the cutterhead of the tunnel boring machine does not rotate in only one direction, but can rotate in both directions. This means that the fluid in the hydraulic system also flows back and forth. Based on this, this solution includes two filtration devices to filter the fluid flowing back and forth. Secondly, since both ends of the pipe are equipped with filter screens, impurities cannot enter the filters. To solve this problem, this solution includes a first one-way valve on the filter screen. When the fluid flows from top to bottom, the first one-way valve on the upper filter screen opens due to the fluid pressure, allowing the fluid to enter the pipe through the upper opening, then pass through the upper spiral tube, and finally flow out through the lower filter screen. Similarly, when the fluid flows from bottom to top, the first one-way valve on the lower filter screen opens. In summary, this solution, through the two filtration devices and two first one-way valves, enables the device to filter fluids that flow in both directions.

[0013] Preferably, each of the first check valves is provided with a mesh.

[0014] In this technical solution, it should be noted that by setting a mesh on the first one-way valve, the integrity of the filter screen can be guaranteed.

[0015] Preferably, a baffle is embedded in the middle of the tube body, and the liquid outlet of the spiral tube of each set of the filter device passes through the baffle; two circular holes are provided through the baffle, and a second one-way valve is provided on each of the two circular holes. The opening and closing directions of the two second one-way valves are opposite, and the two second one-way valves are respectively connected to the baffle through a second spring.

[0016] In this technical solution, it should be noted that if the liquid flow rate is high and there are too many impurities in the liquid, and the liquid is filtered entirely through the spiral tube, it is easy to cause blockage of the spiral tube. Therefore, this solution is equipped with a baffle, which forms an overflow space between the baffle and the filter screen. When the liquid is filtered and the liquid pressure is low, part of it flows into the spiral tube and the other part flows into the overflow space, gradually filling the overflow space until it overflows into the liquid inlet of the spiral tube. When the liquid is filtered and the liquid pressure is high, part of it flows into the spiral tube and the other part flows into the overflow space, and the liquid pressure opens the second one-way valve, allowing the liquid to flow directly out from the round hole. Of course, the filter fails at this time, but it does not affect the use of the equipment.

[0017] Preferably, each of the spiral tubes in the filter device is equipped with a third one-way valve at its outlet.

[0018] In this technical solution, it should be noted that the third check valve prevents liquid from flowing into the spiral tube from the outlet.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, the spiral tube enables the liquid to centrifugally rotate, improving the impurity separation effect, enhancing the self-cleaning ability of the hydraulic system, extending the service life of the equipment, and the high-purity environment of the hydraulic system helps to reduce the occurrence of failures and improve the reliability of the equipment. 2. In this invention, since most of the impurities are metallic, magnets are used to adsorb the metallic impurities; 3. In this invention, by setting two filtration devices and two first one-way valves, the device is able to filter liquids that flow in both directions. Attached Figure Description

[0020] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 3 yes Figure 2 A frontal view of the three-dimensional structure; Figure 4 This is a three-dimensional structural diagram of the baffle of the present invention.

[0021] Figure Labels

[0022] 10-Pipe body, 11-Inlet, 12-Filter screen, 121-Opening, 122-First check valve, 20-Spiral tube, 21-Third check valve, 22-Magnet, 30-Baffle, 31-Second check valve, 32-Round hole, 33-Spring, 40-Overflow space. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. Example 1

[0029] like Figure 1-4 As shown in the figure, an embodiment of the present invention discloses a shield tunnel hydraulic motor slag remover, including a pipe body 10 and a filter device; the filter device includes a filter screen 12, a spiral tube 20 and a liquid inlet 11. The liquid inlet 11 is located at one end of the pipe body 10 and communicates with the pipe body 10. The filter screen 12 is embedded inside the other end of the pipe body 10. The spiral tube 20 is disposed inside the pipe body 10 and is arranged along the axial direction of the pipe body 10. One end of the spiral tube 20 communicates with the liquid inlet 11, and the other end extends in a direction away from the liquid inlet 11. An impurity collector is provided on the inner wall of the pipe body 10, and the liquid outlet of the spiral tube 20 faces the impurity collector. It should be noted that the spiral tube 20 is a spiral tube 10, in which the liquid can rotate around the spiral tube 20, thereby making it easier for metal impurities to enter the deslagging device through eddy current. The spiral tube 20 can be a flexible tube or a metal tube. The filter screen 12 is used to filter impurities and prevent them from being discharged from the deslagging device. The impurity collector is used to collect the impurities flowing out of the outlet of the spiral tube 20. The principle of this solution is as follows: the deslagging device of this invention is installed in the hydraulic system of the tunnel boring machine. When the tunnel boring machine is working, the hydraulic system is started to drive the cutterhead to rotate. The liquid enters the spiral tube 20 of the deslagging device through the inlet 11 of the tube 10. The liquid drives the metal impurities to rotate in the spiral tube 20 and flows out from the outlet of the spiral tube 20. At this time, the impurity collector collects the impurities, and then the liquid flows out of the deslagging device through the filter screen 12.

[0030] like Figures 2-3 As shown, in this embodiment, there are multiple spiral tubes 20, which are arranged at intervals along the circumference of the tube body 10. It should be noted that there are specifically three spiral tubes 20, with an angular interval of 120° between them. Each of the three spiral tubes 20 has an impurity collector at its outlet. The arrangement of three spiral tubes 20, compared to a single spiral tube 20, can reduce the probability of the spiral tube 20 becoming clogged.

[0031] like Figures 2-3 As shown, in this embodiment, the impurity collector is a magnet 22, and the outlet of the spiral tube 20 faces the magnet 22. It should be noted that the magnet 22 is composed of iron, cobalt, nickel, and other atoms, whose internal atomic structure is unique and inherently possesses a magnetic moment. The magnet 22 can generate a magnetic field, exhibiting the property of attracting ferromagnetic materials such as iron, nickel, and cobalt. In this design, since most impurities are metallic, the magnet 22 is used to adsorb these metallic impurities. Furthermore, in this design, the magnet and the tube 10 are detachably connected, and all components on the tube 10 are detachably connected to the tube 10, facilitating the removal of the magnet 22 for cleaning.

[0032] like Figures 2-3 As shown, in this embodiment, the filtration device consists of two sets, which are symmetrically arranged with the cross-section of the tube body 10 as the symmetrical plane. Each set of the filtration device has an opening 121 through the filter screen 12, and a first one-way valve 122 is provided at the opening 121. The opening and closing directions of the two first one-way valves 122 are opposite, and the opening 121 faces the water inlet of the spiral tube 20.

[0033] It should be noted that the cutterhead of the tunnel boring machine does not rotate in only one direction, but can rotate in both directions. This means the liquid in the hydraulic system also flows back and forth. Therefore, this design includes two filtration devices to filter the back-and-forth flowing liquid. Secondly, since both ends of the pipe body 10 are equipped with filter screens 12, impurities cannot enter the filters. To address this, this design includes a first one-way valve 122 on the filter screen 12. When the liquid flows from top to bottom, the first one-way valve 122 on the upper filter screen 12 opens due to liquid pressure, allowing the liquid to enter the pipe body 10 through the upper opening 121, then through the upper spiral pipe 20, and finally out through the lower filter screen 12. Similarly, when the liquid flows from bottom to top, the first one-way valve 122 on the lower filter screen 12 opens. In summary, this design, through the two filtration devices and two first one-way valves 122, enables the device to filter liquids that flow in both directions.

[0034] like Figures 2-3 As shown, in this embodiment, each of the first one-way valves 122 is provided with a mesh. It should be noted that by providing mesh on the first one-way valve 122, the integrity of the filter screen 12 can be guaranteed.

[0035] like Figures 2-4 As shown, in this embodiment, a baffle 30 is embedded in the middle of the tube body 10, and the liquid outlet of the spiral tube 20 of each filter device passes through the baffle 30; two circular holes 32 are provided through the baffle 30, and a second one-way valve 31 is provided on each of the two circular holes 32. The opening and closing directions of the two second one-way valves 31 are opposite, and the two second one-way valves 31 are respectively connected to the baffle 30 through a second spring 33. It should be noted that if the liquid flow rate is high and there are too many impurities in the liquid, and the liquid is filtered entirely through the spiral tube 20, it is easy to cause blockage of the spiral tube 20. Therefore, this solution is equipped with a baffle 30, which forms an overflow space 40 between the baffle 30 and the filter screen 12. When the liquid is filtered and the liquid pressure is low, part of it flows into the spiral tube 20 and the other part flows into the overflow space 40, gradually filling the overflow space 40 until it overflows into the liquid inlet of the spiral tube 20. When the liquid is filtered and the liquid pressure is high, part of it flows into the spiral tube 20 and the other part flows into the overflow space 40, and the liquid pressure pushes open the second one-way valve 31, allowing the liquid to flow directly out from the round hole 32. Of course, the filter fails at this time, but it does not affect the use of the equipment.

[0036] like Figures 2-3 As shown, in this embodiment, each spiral tube 20 of the filter device is equipped with a third one-way valve 21 at its outlet. It should be noted that the third one-way valve 21 prevents liquid from flowing into the spiral tube 20 from its outlet.

[0037] The working principle of this embodiment is as follows: The slag remover of the present invention is installed in the hydraulic system of the tunnel boring machine. When the tunnel boring machine is working, the hydraulic system is started to drive the cutterhead to rotate in the forward direction. The liquid flows from top to bottom. The first one-way valve 122 of the upper filter screen 12 is opened due to the liquid pressure. The liquid enters the pipe body 10 through the upper opening 121. When the liquid pressure is low, part of it flows into the spiral tube 20 and the other part flows into the overflow space 40 and gradually fills the overflow space 40 until it overflows into the liquid inlet of the spiral tube 20. Then it flows out from the liquid outlet of the spiral tube 20. The magnet 22 on the inner wall of the pipe body 10 collects the metal impurities. After collection, the liquid flows out from the lower filter screen 12. When the liquid is filtered and the liquid pressure is high, part of it flows into the spiral tube 20 and the other part flows into the overflow space 40. The liquid pressure pushes open the second one-way valve 31, allowing the liquid to flow directly out from the round hole 32. Of course, the filter fails at this time, but it does not affect the use of the equipment. Similarly, if the cutter head rotates in the opposite direction, the liquid will flow from bottom to top, and the principle is similar to that described above. Example 2

[0038] This embodiment is largely the same as the above embodiment, except that in this solution, the number of first check valves corresponds to the number of spiral tubes 20, and the spiral tubes 20 are arranged opposite to the first check valves.

[0039] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The scope of protection of this invention does not involve any improvement to the software and methods.

[0040] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shield tunneling hydraulic motor slag remover, characterized in that, Includes a tube body (10) and a filter device; The filtration device includes a filter screen (12), a spiral tube (20), and an inlet (11). The inlet (11) is located at one end of the tube body (10) and communicates with the tube body (10). The filter screen (12) is embedded inside the tube body (10) at the other end. The spiral tube (20) is located inside the tube body (10) and is arranged along the axial direction of the tube body (10). One end of the spiral tube (20) communicates with the inlet (11), and the other end extends away from the inlet (11). An impurity collector is provided on the inner wall of the tube body (10), and the outlet of the spiral tube (20) faces the impurity collector. The filter device consists of two sets, which are symmetrically arranged with the cross-section of the tube (10) at the center as the plane of symmetry. Each filter screen (12) of the filter device is provided with an opening (121), and a first one-way valve (122) is provided at the opening (121). The two first one-way valves (122) open and close in opposite directions. A baffle (30) is embedded in the middle of the tube body (10), and the liquid outlet of the spiral tube (20) of each set of the filter device passes through the baffle (30). Two circular holes (32) are provided through the baffle (30), and two one-way valves (31) are respectively provided on the two circular holes (32). The opening and closing directions of the two one-way valves (31) are opposite, and the two one-way valves (31) are respectively connected to the baffle (30) through a second spring (33).

2. The shield tunneling hydraulic motor slag remover according to claim 1, characterized in that, There are multiple spiral tubes (20), and the multiple spiral tubes (20) are arranged at intervals along the circumference of the tube body (10).

3. A shield tunneling hydraulic motor slag remover according to claim 2, characterized in that, There are 3 spiral tubes (20).

4. A shield tunneling hydraulic motor slag remover according to claim 1, characterized in that, The impurity collector is a magnet (22), and the outlet of the spiral tube (20) faces the magnet (22).

5. A shield tunneling hydraulic motor slag remover according to claim 1, characterized in that, The opening (121) faces the inlet of the spiral tube (20).

6. A shield tunneling hydraulic motor slag remover according to claim 1, characterized in that, Each of the first check valves (122) is provided with a mesh.

7. A shield tunneling hydraulic motor slag remover according to claim 1, characterized in that, Each of the spiral tubes (20) of the filter device is equipped with a third check valve (21) at its outlet.

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