A slurry filtering device for slurry shield construction

Abstract

The application provides a slurry filtering device for slurry shield construction. The filtering device comprises a base and a filtering box, the filtering box is installed on the base through a vibrating spring, a vibrating motor is installed at the bottom end of the filtering box, a first filter screen is movably installed on the inner wall of the filtering box, the first filter screen divides the filtering box into a feeding cavity and a discharging cavity, filter screen storage cavities are respectively arranged in the two side box plates of the filtering box, a second filter screen is slidably installed in one of the filter screen storage cavities, a feeding port is installed at the top end of the filtering box, the feeding cavity is provided with a residue discharging port, the discharging cavity is provided with a slurry discharging port, and a turnover assembly and a driving mechanism are arranged on one side of the first filter screen. Through the arrangement of the driving mechanism and the turnover assembly, when more viscous substances are attached to the surface of the first filter screen, the first filter screen and the second filter screen are simultaneously moved, the filter screen is replaced, the influence of the viscous substances in the slurry on the filtering effect of the first filter screen is reduced, and the working efficiency of the slurry filtering device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slurry circulation treatment devices, and particularly relates to a slurry filtering device for slurry shield construction. BACKGROUND

[0002] The slurry circulation treatment device in slurry shield construction is a key system for ensuring normal tunneling of a shield machine and stability of soil, and the main function of the device is to treat and recycle slurry, including slurry separation, purification, and adjustment of physical and chemical properties of the slurry, so as to be re-delivered to a slurry tank of the shield machine, wherein a slurry pump is usually provided to deliver slurry from a slurry shield to the slurry circulation treatment device, and then a cyclone separator is used for preliminary slurry separation, followed by a vibrating screen for removing large particles in the slurry, and then a dehydration device is used for separating the slurry into clear water and mud cake, and finally the clear water and the prepared slurry are delivered back to the slurry shield machine, to complete the slurry circulation in the slurry shield construction.

[0003] In actual use, the slurry is generally filtered by the vibrating screen, and although the vibrating screen can effectively remove large particles in the slurry, when the vibrating screen is used for a long time or the slurry is relatively viscous, a large amount of viscous substances can easily adhere to the surface of the filter screen in the vibrating screen, thereby reducing the slurry filtering effect, and also reducing the vibration amplitude of the filter screen, and further reducing the separation efficiency of the vibrating screen, resulting in a decrease in the working efficiency of the slurry filtering device, and at this time, the worker needs to close and disassemble the vibrating screen to replace the filter screen, thereby causing complicated operation and affecting the overall working efficiency of the slurry circulation treatment device. SUMMARY

[0004] In order to make up for the deficiencies of the prior art, the present application provides a slurry filtering device for slurry shield construction, which can automatically replace the filter screen when a large amount of viscous substances adhere to the surface of the filter screen in the vibrating screen when the vibrating screen is used for a long time or the slurry is relatively viscous, thereby saving the filter screen replacement time and process, and improving the slurry treatment efficiency.

[0005] In order to achieve the above technical objectives, the present invention provides a mud filtering device for mud-water shield construction, comprising a base and a filter box, wherein the filter box is mounted on the base by multiple groups of vibration springs, and a vibration motor is fixedly mounted at the bottom end of the filter box, and the vibration motor provides vibration power for the filter box, and is characterized in that: a first filter screen is movably mounted in the filter box, and the inner cavity of the filter box is divided into an upper feed cavity and a lower discharge cavity by the first filter screen, a feed port connected to the feed cavity is provided at the top of the filter box, a slag discharge port is provided at a position corresponding to the bottom of the feed cavity of the filter box, and a mud discharge port is provided at a position corresponding to the bottom of the discharge cavity of the filter box; the first filter screen is mounted in the filter box through a flip assembly, and filter screen storage cavities are respectively provided in the box baffles on the left and right sides of the filter box corresponding to the first filter screen, and cavities matching the first filter screen are respectively opened in the two filter screen storage cavities corresponding to the first filter screen, and a second filter screen is slidably mounted in the filter screen storage cavity of the box baffle on one side, and one side edge of the second filter screen is adjacent to one side edge of the first filter screen;

[0006] The flip assembly includes a driving mechanism and first sliding rods symmetrically arranged on both sides of the first filter screen, and the first sliding rods are arranged on the side of the first filter screen that is not adjacent to the filter storage chamber; first sliding grooves are respectively opened on the inner walls of the box baffle on both sides of the filter box corresponding to the first filter screen provided with the first sliding rod, and the two ends of each group of first sliding grooves respectively extend to the filter storage chambers on both sides, and two groups of second sliding grooves are respectively provided in the filter storage chambers on both sides, and the two groups of second sliding grooves in the filter storage chamber on each side are respectively connected with the two groups of first sliding grooves; the first filter screen is slidably installed in the first sliding groove by the first sliding rods on both sides, and the second filter screen is slidably installed in the second sliding grooves on both sides by the second sliding rods;

[0007] The driving mechanism is installed at the end of one of the first sliding rods and is connected to the first sliding rod through a transmission assembly. The driving mechanism is connected to one of the second sliding rods of the second filter screen through a synchronous transmission mechanism; the driving mechanism synchronously drives the first sliding rod and the second sliding rod to slide along the first sliding groove and the second sliding groove, so that the first sliding rod drives the first filter screen to move into the filter storage cavity away from the second filter screen side of the filter box, and at the same time drives the second filter screen to move to the original position of the first filter screen for filter replacement.

[0008] A further technical solution of the present invention: the driving mechanism is installed in the box baffle of the filter box, and a driving mechanism installation cavity is provided in the box baffle for installing the driving mechanism; the driving mechanism includes a first driving motor, a screw rod and a slider threaded on the screw rod, the screw rod is vertically arranged at the end of the first filter away from the second filter screen, and is rotatably installed in the driving mechanism installation cavity, the lower end of the screw rod extends vertically below the bottom of the filter storage cavity on the same side, the first driving motor is fixedly installed in the driving mechanism installation cavity, and its output shaft is fixedly connected to the screw rod, and the slider is connected to one of the first sliding rods of the first filter screen; the screw rod is controlled to rotate by the first driving motor, driving the slider to move up and down along the screw rod, thereby driving the first filter screen to slide along the first slide groove to the filter storage cavity where the second filter screen is not installed.

[0009] The transmission mechanism that this second gear rotates is with the camming wheel that is located on the camming wheel axis, and this second gear rotates with the camming wheel axis.

[0010] The preferred technical solution of the present invention is as follows: the first filter screen and the bottom of the discharge chamber are both inclined, and the inclination angle is not greater than 15°, the first filter screen is inclined toward the slag discharge port, and the bottom of the discharge chamber is inclined toward the mud discharge port; a flow meter is installed on the outer pipe of the mud discharge port.

[0011] A preferred technical solution of the present invention is as follows: drying plates are slidably installed in the filter storage cavities on both sides of the filter box, ventilation holes are provided on one side of the drying plates, and scrapers are provided on the tops of the drying plates.

[0012] The better technical solution of the present invention: the synchronous transmission mechanism includes a synchronous rod arranged on one side of the slider, and a synchronous block is rotatably installed on the end of the synchronous rod away from the slider; two second sliding rods are provided on each side of the second filter screen, and the two second sliding rods on the same side are respectively arranged at the upper and lower ends of the second filter screen; the synchronous block is fixedly installed on the second sliding rod on the same side of the driving mechanism as the upper end of the second filter screen; and when the slider moves up and down along the screw rod, the second sliding rod is driven to slide along the second slide groove and the first slide groove through the synchronous rod.

[0013] A preferred technical solution of the present invention is as follows: two first sliding rods are provided on each side of the first filter screen, and the two first sliding rods on the same side are respectively arranged at the two ends of the first filter screen adjacent to the two filter screen storage cavities.

[0014] The preferred technical solution of the present invention is as follows: the filtering device further includes a barrier assembly, which includes a second rotating rod and a barrier plate located in the feed chamber. The second rotating rod is rotatably mounted in the drive mechanism mounting chamber and vertically extends to the height of the feed chamber and is connected to the barrier plate through a rotating handle. A third gear is fixedly mounted at a position where the second rotating rod is at the same height as the first gear, and the third gear is meshed with the first gear.

[0015] A better technical solution of the present invention is: the cross-sectional area of ​​the baffle plate is larger than the cross-sectional area of ​​the feed port, a baffle groove is provided on one side of the bottom end of the feed port, the baffle groove is opened on the inner wall of the filter box, and the baffle plate is slidably installed in the baffle groove.

[0016] The present invention is beneficial in that:

[0017] (1) The present invention provides a driving mechanism and a flip assembly. When a large amount of viscous material adheres to the surface of the first filter screen, the operator can start the driving mechanism, thereby driving the flip assembly to operate, causing the first filter screen to flip to one side of the filter box, and driving the second filter screen to flip to the position of the first filter screen, thereby realizing the filter screen replacement process; the filter screen replacement process of the present invention is simple and convenient, and the filter screen can be replaced without disassembling the filter device, which reduces the filter screen replacement time, simplifies the filter screen replacement procedure, reduces the influence of the viscous material in the mud on the filter effect of the filter screen, and improves the overall working efficiency of the filter device;

[0018] (2) The present invention sets a fixing component. Before replacing the first filter, the staff can start the first drive motor, so that the first drive motor drives the tilting block to move to abut against the tilting groove through the first gear, the first rotating rod and the driving tooth plate, thereby fixing the filter box. This avoids the need to wait for the closed filter box to stop vibrating before replacing the first filter, which causes the entire mud and water circulation treatment device to stop rotating for a longer time, thereby reducing the overall working efficiency of the mud and water circulation treatment device, shortening the time to replace the first filter, and improving the overall working efficiency of the mud and water circulation treatment device. In addition, by fixing the filter box, the replacement process of the first filter can also be made more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 Schematic diagram of the cross-sectional structure of the flip assembly of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 Schematic diagram of the cross-sectional structure of the barrier component of the present invention.

[0025] In the figure: 1. base; 2. vibration spring; 3. filter box; 4. feed port; 5. slag discharge port; 6. mud discharge port; 7. first filter screen; 8. first drive rod; 9. first chute; 10. slider; 11. screw rod; 12. first drive motor; 13. first gear; 14. second drive motor; 15. synchronization rod; 16. synchronization block; 17. second drive rod; 18. second filter screen; 19. first rotating rod; 20. driving gear plate; 21. tilting block; 22. guide rod; 23. tilting groove; 24. limit frame; 25. buffer spring; 26. second gear; 27. third gear; 28. second rotating rod; 29. ​​rotating handle; 30. blocking plate; 31. blocking groove; 32. drying plate; 33. scraper; 34. second chute; 35. flow meter. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0027] The first embodiment provides a slurry filtering device for slurry shield construction, such as Figures 1 to 5As shown, it includes a base 1 and a filter box 3. Vibration springs 2 are evenly installed on the top of the base 1. The filter box 3 is located on the top of the vibration springs 2. A vibration motor is fixedly installed at the bottom of the filter box 3. The vibration motor is located between the base 1 and the filter box 3 and is used to provide vibration power for the filter box 3. A feed port 4 is fixedly installed on the top of the filter box 3, a slag discharge port 5 is fixedly installed on one side of the filter box 3, and a mud outlet 6 is provided at the bottom of the other side of the filter box 3. A flow meter 36 is installed on the outer wall of the mud outlet 6. A first filter screen 7 is movably installed in the body of the filter box 3, and the first filter screen 7 divides the inner cavity of the filter box 3 into an upper feed cavity and a lower discharge cavity. The feed port 4 is arranged at the top of the feed cavity, the slag discharge port 5 is arranged on the lower side of the feed cavity, and the mud discharge port 6 is arranged at the bottom of one side of the discharge cavity. The first filter screen 7 and the bottom of the discharge cavity are both inclined, and the inclination angle is not greater than 15°. The first filter screen 7 is inclined toward the slag discharge port 5, and the bottom of the discharge cavity is inclined toward the mud discharge port 6, which can ensure that the filtered large-particle mud can be discharged smoothly through the slag discharge port during the vibration process, and the filtered mud can be discharged smoothly through the mud discharge port 6.

[0028] The first embodiment provides a slurry filtering device for slurry shield construction, such as Figures 1 to 5 As shown, the first filter screen 7 is installed in the filter box 3 through a flip assembly, and filter screen storage cavities are respectively provided in the box baffles on the left and right sides of the filter box 3 corresponding to the first filter screen 7. The two filter screen storage cavities are respectively provided with cavity openings matching the first filter screen 7 at the positions corresponding to the first filter screen 7, and a second filter screen 18 is slidably installed in the filter screen storage cavity of the box baffle on one side, and one side edge of the second filter screen 18 is adjacent to one side edge of the first filter screen 7. The flip assembly includes a driving mechanism and first sliding rods 8 symmetrically arranged on the front and rear sides of the first filter screen 7 not adjacent to the filter screen storage cavity, and two first sliding rods 8 are provided on each side, and the two first sliding rods 8 on the same side are respectively arranged at the left and right ends of the first filter screen 7 adjacent to the two filter screen storage cavities; first sliding grooves 9 are respectively opened on the inner walls of the box baffles on the front and rear sides of the filter box 3 corresponding to the first filter screen 7 provided with the first sliding rod 8, and the two ends of the two groups of first sliding grooves 9 extend to the filter screen storage cavities on the left and right sides respectively, and two groups of second sliding grooves 34 are respectively provided in the filter screen storage cavities on both sides, and the two groups of second sliding grooves 34 in the filter screen storage cavity on each side are respectively connected with the two groups of first sliding grooves 9 to form two " The first filter screen 7 is slidably installed in the first slide groove 9 by the first slide bars 8 on both sides. The driving mechanism is installed at the end of one of the first slide bars 8 and can drive the first slide bar 8 to slide along the first slide groove 9 and the second slide groove 34, so that the first slide bar 8 can drive the first filter screen 7 to move stably and smoothly into the filter storage chamber of the filter box 3 away from the second filter screen 18. The second filter screen 18 is connected to the driving mechanism through a synchronous transmission mechanism. When the driving mechanism drives the first filter screen 7 to move toward the filter storage chamber away from the second filter screen 18, it also drives the second filter screen 18 to move to the original position of the first filter screen 7, thereby completing the filter replacement process.

[0029] The driving mechanism in the first embodiment is installed in the box baffle of the filter box 3. The thickness of the box baffle of the filter box 3 meets the installation of the driving mechanism and can meet the setting of the filter storage cavity. In order to facilitate the installation of the driving mechanism, a driving mechanism installation cavity can be provided in the box baffle where the driving mechanism is installed, such as Figures 2 to 4 As shown, it includes a first drive motor 12, a screw rod 11 and a slider 10 threadedly mounted on the screw rod, the screw rod 11 is vertically arranged at the end of the first filter 7 away from the second filter 18, and is rotatably mounted in the drive mechanism mounting cavity, the slider 10 starting position is located at the upper end of the screw rod 11, and is connected to the first slide rod 8 on the same side of the first filter 7, the lower end of the screw rod 11 extends vertically to below the bottom of the filter storage cavity on the same side; the first drive motor 12 is fixedly mounted in the drive mechanism mounting cavity, and the output shaft of the first drive motor 12 is connected to the screw rod 11 The lower end is fixedly connected, the input end of the first drive motor 12 is electrically connected to the external power supply, and the driving mechanism is set so that when the staff needs to replace the first filter 7, they can start the first drive motor 12, and the first drive motor 12 controls the rotation of the screw rod 11, and use the slider 10 to move downward along the screw rod 11, thereby driving one end of the first filter 7 to slide along the first slide groove 9 to the filter storage chamber where the second filter 18 is not installed, reducing the filter replacement operation steps and improving work efficiency. The model of the first drive motor 12 is HG KN73BJ S100.

[0030] In the first embodiment, the synchronous transmission mechanism is as follows Figure 2 、 Figure 3 and Figure 5As shown, the synchronizing rod 15 is provided on one side of the slider 10. A synchronizing block 16 is rotatably mounted on the end of the synchronizing rod 15 away from the slider 10. Second slide bars 17 are symmetrically provided on the front and rear sides of the second filter screen 18. The second filter screen 18 is slidably mounted in the second chute 34 of the corresponding filter screen storage chamber via the front and rear second slide bars 17. Two second slide bars 17 are provided on each side. The two second slide bars 17 on the same side are respectively provided at the upper end of the second filter screen 18 adjacent to the first filter screen 7 and the lower end away from the first filter screen 7. The synchronizing block 16 is fixedly mounted on the second slide bar 17 at the upper end of the second filter screen 18 adjacent to the first filter screen 7. When the slider 10 moves up and down along the screw rod 11, the synchronizing rod 15 drives the synchronizing block 16 and the second slide bar 17 connected to the synchronizing block 16 to move along the second chute 34 and the first chute 9. When the slider 10 moves downward along the screw rod 11, the synchronizing block 16 drives the second slide bar 17 and the second filter screen 18 to move to the original position of the first filter screen 7, thereby replacing the first filter screen 7 to perform filtering work.

[0031] To sum up, by cooperating with the flipping assembly and the synchronous transmission mechanism, when a large amount of viscous material is attached to the first filter screen 7, the staff can start the first drive motor 12, so that the first drive motor 12 drives the flipping assembly through the first gear 13 and the first gear 12, thereby moving the first filter screen 7 to one side of the filter box 3, and at the same time moving the second filter screen 18 to the original position of the first filter screen 7, that is, the bottom end of the feed port 4, through the synchronous transmission mechanism, so that the staff can replace the first filter screen 7 and the second filter screen 18 without disassembling the filter box 3, which simplifies the replacement steps of the first filter screen 7 and improves the working efficiency of the mud and water filtering device.

[0032] The second embodiment provides a slurry filtering device for slurry shield construction, which, in addition to the structure of the first embodiment, also includes a fixing component; Figure 2 、 Figure 4 and Figure 5As shown, each group of vibration springs 2 is provided with a guide rod 22, the guide rod 22 is fixed on the base 1, the vibration spring 2 is wound around the outside of the guide rod 22, the lower end is fixed on the base 1, and the upper end is fixed to the bottom of the filter box 3. By providing the guide rod 22, the filter box 3 can be guided left and right when the filter box 3 vibrates with a small amplitude and for a long time, so that the filter box 3 moves back and forth in the vertical direction, avoiding the filter box 3 from vibrating in the horizontal direction, causing the vibration spring 2 to bend and damaged. The fixing assembly includes a second drive motor 14 fixed in the drive mechanism installation cavity, a first gear 13 fixedly installed on the output shaft of the second drive motor 14, a first rotating rod 19 arranged at the bottom end of the first gear 13 and a driving gear plate 20 located at the bottom of the filter box 3, the lower end of the first rotating rod 19 extends out of the bottom of the filter box 3, and a second gear 26 is fixedly installed at its bottom end, the second gear 26 and the driving gear plate 20, in order to limit the second gear 26 from separating from the driving gear plate 20, a limiting frame 24 is provided on the outside of the second gear 26, and the driving gear plate 20 is arranged in the inner frame of the limiting frame 24,

[0033] A tilting block 21 is fixedly mounted on the end of the limit frame 24 , and a tilting groove 23 matching the tilting block 21 is provided on the top of the guide rod 22 inside the vibration spring adjacent to the tilting block 21 .

[0034] When the filter is replaced, when the guide rod 22 is at a low level, the second drive motor 14 is working, driving the first rotating rod 19 to rotate, thereby driving the inclined block 21 end of the drive gear plate 20 to move toward the inclined groove 23, so that the inclined block 21 at the end of the drive gear plate 20 abuts against the inner wall of the inclined groove 23, and when the bottom end of the inclined block 21 abuts against the bottom end of the inclined groove 23, the guide rod 22 is fixed, thereby fixing the position between the base 1 and the filter box 3, so that the filter box 3 quickly stops vibrating, avoiding the vibration of the filter box 3 affecting the replacement of the filter, thereby improving the efficiency of the filter replacement. In order to ensure stable fixation, a set of fixing components can be set at the diagonal position of the filter box 3, and a second drive motor can be added at the diagonal position at the same time. The first rotating rod of the fixing component is powered by the added second drive motor to control its rotation.

[0035] See also Figure 2-4 and Figure 5As shown, the mud filtering device for mud-water shield construction in Example 2 also includes a blocking assembly, which includes a second rotating rod 28 and a blocking plate 30 located in the feed chamber. The second rotating rod 28 is rotatably installed in the drive mechanism mounting chamber and extends vertically to the height of the feed chamber. It is connected to the blocking plate 30 through a rotating handle 29. A third gear 27 is fixedly installed at a position at which the second rotating rod 28 is at the same height as the first gear 13. The third gear 27 and the first gear 13 are meshed with each other. By setting the third gear 27, when the second drive motor 14 is working, the second rotating rod 28 can be driven to rotate at the same time; and the setting position of the second rotating rod 28 avoids the position of the synchronization rod 15 to avoid the second rotating rod 28 abutting against one side of the synchronization rod 15 and hindering the movement of the synchronization rod 15. A rotating handle 29 is fixedly installed on the top of the second rotating rod 28. The rotating handle 29 passes through the filter box 3 and extends to the inside of the filter box 3 to be connected to the blocking plate 30. The baffle plate 30 is located below the feed port 4, and during the filter replacement process, the baffle plate 30 is controlled by the second drive motor 14 to rotate to just below the feed port 4 to block the feed port, thereby preventing the mud from continuously entering the filter box 3 through the feed port 4 when the first filter screen 7 is replaced, thereby hindering the replacement of the first filter screen 7; in addition, the unfiltered mud directly flows out from the mud outlet 6, which will also cause the mud-water separation effect of the mud-water circulation treatment device to decrease.

[0036] See also Figure 5 As shown, the cross-sectional area of ​​the baffle plate 30 in the second embodiment is larger than the cross-sectional area of ​​the feed port 4, and a baffle groove 31 is provided on one side of the bottom end of the feed port 4. The baffle groove 31 is opened on the inner wall of the filter box 3, and the baffle plate 30 is slidably installed on the inner wall of the baffle groove 31, so that the baffle plate 30 can completely block the bottom end of the feed port 4, thereby improving the blocking effect of the blocking component on the mud, and avoiding the problem that when one end of the baffle plate 30 reaches one side of the bottom end of the feed port 4, the mud easily falls into the filter box 3 from the gap between one end of the baffle plate 30 and the bottom end of the feed port 4, thereby reducing the blocking effect of the blocking component.

[0037] See also Figure 1-2 and Figure 5As shown, drying plates 32 are slidably installed in the filter storage chambers on both sides of the filter box 3 in Example 1 and Example 2. A ventilation hole is provided on one side of the drying plate 32. When the first filter 7 moves to the side of the drying plate 32, the ventilation hole can enhance air circulation, thereby accelerating the drying of the viscous material on the surface of the first filter 7, making it easier to separate the impurities on the surface of the first filter 7. A scraper 33 is provided at the top of the drying plate 32. The side of the scraper 33 close to the filter box 3 is set as a curved portion, and the side of the scraper 33 away from the filter box 3 is set as a straight portion. When the filter under the mud port moves to the filter storage chambers on both sides, the scraper 33 can scrape the surface of the filter, further separating the debris on the surface of the filter, thereby cleaning the replaced filter and allowing it to be reused again to increase the filtering effect. Mud discharge ports are provided at the bottom of the filter storage chambers on both sides, so that the mud dropped in the filter storage chambers can be discharged; the bottoms of the filter storage chambers on both sides can also be opened to clean and discharge the dropped mud residue; or the filter in the filter storage chamber can be taken out and cleaned for reuse.

[0038] The working process of the present invention is as follows: a large amount of viscous matter adheres to the surface of the first filter screen 7, resulting in a decrease in the filtering and separation efficiency of the mud and water filtering device. The staff observes the flow meter and turns off the vibration motor. When the vibration amplitude of the filter box 3 is difficult to observe, the staff starts the second drive motor 14, and the second drive motor 14 drives the first gear 13 to rotate. The first gear 13 drives the third gear 27 to rotate, and the third gear 27 drives the second rotating rod 28 to rotate. The second rotating rod 28 drives the rotating handle 29 to rotate, and the rotating handle 29 drives the blocking plate 30 to move to the inner wall of the blocking groove 31 to prevent the mud from continuing to enter the filter box 3; at the same time, the first gear 13 drives the first rotating rod 19 to rotate, and the first rotating rod 19 drives the driving tooth plate 20 to move, and the driving tooth plate 20 drives the tilting block 21 to the device The guide rod 22 with the inclined groove 23 moves in the direction of the guide rod 22, so that the inclined block 21 drives the inclined groove 23 to move in the direction close to the filter box 3 until the inclined block 21 moves to completely abut against the inclined groove 23, and the buffer tooth plate 24 squeezes the buffer spring 25, causing the buffer spring 25 to elastically deform and accumulate elastic potential energy. When the tooth block at the bottom of the first rotating rod 19 stops abutting against the buffer tooth plate 24, the buffer spring 25 releases the elastic potential energy, and the elastic deformation drives the buffer tooth plate 24 to move in the direction away from the driving tooth plate 20, so that the buffer tooth plate 24 engages with the first rotating rod 19 again, so that the buffer tooth plate 24 is always engaged with the first rotating rod 19; the position between the filter box 3 and the base 1 is fixed, thereby quickly stopping the vibration of the filter box 3.

[0039] After the vibrating screen stops feeding and vibrating, the second drive power supply machine 14 is controlled to turn off, and the first drive motor 12 is controlled to work. The first drive motor 12 drives the screw rod 11 to rotate, so that the screw rod 11 drives the slider 10 to move in the direction close to the base 1, and the slider 10 drives the first slide bar 8 to move, and the first slide bar 8 drives the first filter screen 7 to move along the first chute 9, so that the first filter screen 7 leaves the bottom end of the feed port 4 and enters the filter storage chamber on one side. At the same time, the slider 10 drives the synchronous rod 15 to move, and the synchronous rod 15 drives the synchronous block 16 to move, and the synchronous block 16 drives the second slide bar 17 to move, so that the second slide bar 17 moves along the first chute 9, thereby driving the second filter screen 18 to flip to the bottom end of the feed port 4, that is, the original position of the first filter screen 7, completing the replacement of the first filter screen 7.

[0040] When the first filter screen 7 is flipped to the side of the drying plate 32, the ventilation holes opened in the drying plate 32 accelerate the drying of the surface sticky material, and the dried attachments are shaken off by the vibration of the filter box 3; when a large amount of sticky material is attached to the surface of the second filter screen 18, the staff starts the first drive motor 12 in reverse, so that the first drive motor 12 drives the first filter screen 7 to flip to the bottom end of the feed port 4 through the screw rod 11, and drives the second filter screen 18 to flip to one side of the drying plate 32 through the synchronization rod 15, the synchronization block 16 and the second slide rod 17, completing the replacement of the second filter screen 18, and at the same time as the first filter screen 7 is flipped, the scraper 33 is provided to scrape off the debris on the surface of the first filter screen 7, further improving the filtration efficiency of the first filter screen 7, and repeating the above steps, repeatedly replacing the first filter screen 7 and the second filter screen 18, thereby improving the filtration efficiency of the mud and water filtering device.

[0041] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A slurry filtering device for slurry shield construction, comprising a base (1) and a filter box (3), wherein the filter box (3) is mounted on the base (1) via a plurality of sets of vibration springs (2), a vibration motor is fixedly mounted at the bottom end of the filter box (3), and vibration power is provided to the filter box via the vibration motor, wherein: A first filter screen (7) is movably installed in the filter box (3), and the inner cavity of the filter box (3) is divided into an upper feed cavity and a lower discharge cavity by the first filter screen (7). A feed port (4) communicating with the feed cavity is provided at the top of the filter box (3), a slag discharge port (5) is provided at a position corresponding to the bottom of the feed cavity of the filter box (3), and a mud discharge port (6) is provided at a position corresponding to the bottom of the discharge cavity of the filter box (3); the first filter screen (7) is installed in the filter box (3) through a flip assembly, and filter screen storage cavities are respectively provided in the box baffles on the left and right sides of the filter box (3) corresponding to the first filter screen (7), and the two filter screen storage cavities are respectively provided with cavity openings matching the first filter screen (7) at positions corresponding to the first filter screen (7), and a second filter screen (18) is slidably installed in the filter screen storage cavity of one side of the box baffle, and one side of the second filter screen (18) is adjacent to one side of the first filter screen (7); The flip assembly includes a driving mechanism and first slide bars (8) symmetrically arranged on both sides of the first filter (7), and the first slide bars (8) are arranged on the side of the first filter (7) that is not adjacent to the filter storage chamber; first slide grooves (9) are respectively opened on the inner walls of the box baffles on both sides of the filter box (3) corresponding to the first filter (7) provided with the first slide bars (8), and the two ends of each group of first slide grooves (9) extend to the filter storage chambers on both sides, and two groups of second slide grooves (34) are respectively provided in the filter storage chambers on both sides, and the two groups of second slide grooves (34) in the filter storage chamber on each side are respectively connected to the two groups of first slide grooves (9); the first filter (7) is slidably installed in the first slide groove (9) through the first slide bars (8) on both sides, and the second filter (18) is slidably installed in the second slide grooves (34) on both sides through the second slide bars (17); The driving mechanism is installed at the end of one of the first slide bars (8) and is connected to the first slide bar (8) through a transmission assembly. The driving mechanism is connected to one of the second slide bars (17) of the second filter screen (18) through a synchronous transmission mechanism. The first slide bar (8) and the second slide bar (17) are synchronously driven by the driving mechanism to slide along the first slide groove (9) and the second slide groove (34), so that the first slide bar (8) drives the first filter screen (7) to move to the filter storage chamber of the filter box (3) away from the second filter screen (18), and at the same time drives the second filter screen (18) to move to the original position of the first filter screen (7) to replace the filter screen.

2. A slurry filtering device for slurry shield construction according to claim 1, characterized in that: The driving mechanism is installed in the box baffle of the filter box (3), and a driving mechanism installation cavity is provided in the box baffle where the driving mechanism is installed; the driving mechanism includes a first driving motor (12), a screw rod (11) and a slider (10) threadedly sleeved on the screw rod, the screw rod (11) is vertically arranged at one end of the first filter (7) away from the second filter (18), and is rotatably installed in the driving mechanism installation cavity, the lower end of the screw rod (11) vertically extends below the cavity bottom of the filter storage cavity on the same side, the first driving motor (12) is fixedly installed in the driving mechanism installation cavity, and its output shaft is fixedly connected to the screw rod (11), and the slider (10) is connected to one of the first slide rods (8) of the first filter (7); the screw rod (11) is controlled to rotate by the first driving motor (12), driving the slider (10) to move up and down along the screw rod (11), thereby driving the first filter (7) to slide along the first slide groove (9) to the filter storage cavity where the second filter (18) is not installed.

3. A slurry filtering device for slurry shield construction according to claim 1 or 2, characterized in that: The mud filtering device further includes a fixing assembly, the fixing assembly including a second driving motor (14) fixed in the driving mechanism mounting cavity, a first gear (13) fixedly mounted on the output shaft of the second driving motor (14), a first rotating rod (19) arranged at the bottom end of the first gear (13) and a driving tooth plate (20) located at the bottom of the filter box (3), the lower end of the first rotating rod (19) extending out of the bottom of the filter box (3) and a second gear (26) fixedly mounted at the bottom end thereof, a limiting frame (24) being sleeved on the outer side of the second gear (26), the driving tooth plate (20) being arranged on the inner frame wall of the limiting frame (24) and being in contact with the first rotating rod (19). The two gears (26) are meshed, and a tilting block (21) is fixedly installed at one end of the limit frame (24); a guide rod (22) is provided in each group of vibration springs (2), the guide rod (22) is fixed on the base (1), the vibration spring (2) is wound around the outside of the guide rod (22), the lower end is fixed on the base (1), and the upper end is fixed on the bottom of the filter box (3), and an inclined groove (23) matching the inclined block (21) is provided at the top end of the guide rod (22) inside the vibration spring adjacent to the tilting block (21); and under the action of the second drive motor (14), the limit frame (24) is driven to move to the tilting block (21) and engage with the inclined groove (23).

4. A slurry filtering device for slurry shield construction according to claim 1 or 2, characterized in that: The first filter screen (7) and the bottom of the discharge chamber are both inclined, and the inclination angle is no greater than 15°. The first filter screen (7) is inclined toward the slag discharge port (5), and the bottom of the discharge chamber is inclined toward the mud discharge port (6). A flow meter (35) is installed on the outer pipe of the mud discharge port (6).

5. A slurry filtering device for slurry shield construction according to claim 1 or 2, characterized in that: Drying plates (32) are slidably mounted in the filter screen storage cavities on both sides of the filter box (3), a ventilation hole is provided on one side of the drying plate (32), and a scraper (33) is provided on the top of the drying plate (32).

6. The slurry filtering device for slurry shield construction according to claim 2, characterized in that: The synchronous transmission mechanism includes a synchronous rod (15) arranged on one side of the slider (10), and a synchronous block (16) is rotatably installed on the end of the synchronous rod (15) away from the slider (10); two second slide rods (17) are provided on each side of the second filter screen (18), and the two second slide rods (17) on the same side are respectively arranged at the upper and lower ends of the second filter screen (18); the synchronous block (16) is fixedly installed on the second slide rod (17) on the same side of the driving mechanism as the upper end of the second filter screen (18); and when the slider (10) moves up and down along the screw rod (11), the second slide rod (17) is driven by the synchronous rod (15) to slide along the second slide groove (34) and the first slide groove (9).

7. The slurry filtering device for slurry shield construction according to claim 2, characterized in that: Two first sliding rods (8) are provided on each side of the first filter screen (7), and the two first sliding rods (8) on the same side are respectively arranged at two ends of the first filter screen (7) adjacent to the two filter screen storage cavities.

8. The slurry filtering device for slurry shield construction according to claim 3, characterized in that: The filtering device further comprises a barrier assembly, which comprises a second rotating rod (28) and a barrier plate (30) located in the feed chamber. The second rotating rod (28) is rotatably mounted in the drive mechanism mounting chamber and vertically extends to the height of the feed chamber and is connected to the barrier plate (30) via a rotating handle (29). A third gear (27) is fixedly mounted at a position at the same height as the second rotating rod (28) and the first gear (13). The third gear (27) and the first gear (13) are meshed with each other.

9. A slurry filtering device for slurry shield construction according to claim 8, characterized in that: The cross-sectional area of ​​the baffle plate (30) is larger than the cross-sectional area of ​​the feed port (4), and a baffle groove (31) is provided on one side of the bottom end of the feed port (4). The baffle groove (31) is opened on the inner wall of the filter box (3), and the baffle plate (30) is slidably mounted on the inner wall of the baffle groove (31).

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