Slurry filtering device

Abstract

The utility model provides a slurry filtering device. The filtering device comprises a base and a filtering box, the filtering box is installed on the base through a vibration spring, a vibration motor is installed at the bottom end of the filtering box, a first filtering net is movably installed on the inner wall of the filtering box, and the filtering box is divided into a feeding cavity and a discharging cavity through the first filtering net; filter screen storage cavities are formed in box plates on the two sides of the filter box respectively, a second filter screen is installed in one filter screen storage cavity in a sliding mode, a feeding opening is formed in the top end of the filter box, a residue discharging opening is formed in the feeding cavity, a sludge discharging opening is formed in the discharging cavity, and a turnover mechanism is arranged on one side of the first filter screen; and the turnover mechanism is connected with the second filter screen through a linkage mechanism. When more viscous substances are attached to the surface of the first filter screen, the first filter screen and the second filter screen are moved at the same time through the turnover mechanism, the filter screens are replaced, and the working efficiency of the muddy water filtering device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mud water circulation treatment device technical field, specifically is a mud filter. BACKGROUND

[0002] The mud water circulation treatment device in the slurry shield construction is the key system for ensuring the normal tunneling of the shield machine and the stability of the soil body, the main function of the device is to treat and recycle the mud water, including separating, purifying the mud water and adjusting the physical and chemical properties of the mud water, so as to be re-delivered to the mud water bin of the shield machine, wherein the mud pump is usually equipped to deliver the mud water from the mud shield to the mud water circulation treatment device, then the cyclone separator is used for preliminary mud water separation, then the vibration screen is used to remove the larger particles in the mud, then the dewatering equipment is used to separate the mud into clear water and mud cake, finally the clear water and the prepared mud are delivered back to the mud shield machine, and the mud water circulation in the slurry shield construction is completed.

[0003] In actual use, the mud is generally filtered through the vibration screen, although the larger particles in the mud can be effectively removed through the vibration screen, but when the vibration screen is used for a long time or the mud is treated as being more viscous, a large amount of viscous substances can be easily attached to the surface of the filter screen in the vibration screen, thereby reducing the mud filtering effect, also reducing the vibration amplitude of the filter screen, further reducing the separation efficiency of the vibration screen, causing the working efficiency of the mud filtering device to be reduced, at this time, the worker needs to close and disassemble the vibration screen to replace the filter screen, thereby causing the operation to be complicated and the overall working efficiency of the mud water circulation treatment device to be affected; therefore, the mud filtering device is provided for the above problems. UTILITY MODEL CONTENTS

[0004] In order to make up for the deficiencies of the prior art, the utility model provides the mud filtering device, when the surface of the filter screen in the vibration screen is easily attached to a large amount of viscous substances when the vibration screen is used for a long time or the mud is treated as being more viscous, the filter screen can be automatically replaced, the filter screen replacement time and process are saved, thereby improving the mud treatment efficiency.

[0005] To achieve the above-mentioned technical objectives, this utility model provides a mud filtration device, including a base and a filter box. The filter box is mounted on the base via multiple sets of vibration springs. A vibration motor is fixedly installed at the bottom of the filter box, providing vibration power to the filter box. The device is characterized in that: a first filter screen is movably installed inside the filter box, dividing the inner cavity of the filter box into an upper feed chamber and a lower discharge chamber. An inlet communicating with the feed chamber is provided at the top of the filter box, a slag discharge port is provided at the bottom of the feed chamber, and a mud discharge port is provided at the bottom of the discharge chamber. The first filter screen is installed inside the filter box via a flipping mechanism. Filter screen storage chambers are respectively provided in the box body baffles on the left and right sides corresponding to the first filter screen. Each of the two filter screen storage chambers has an opening matching the first filter screen at the corresponding position. A second filter screen is slidably installed in the filter screen storage chamber of one side of the box body baffle, with one side of the second filter screen adjacent to one side of the first filter screen. The flipping mechanism is connected to the second filter screen via a linkage mechanism.

[0006] The preferred technical solution of this utility model is as follows: the bottom of the first filter screen and the discharge chamber are both inclined, and the inclination angle is not greater than 15°. The first filter screen is inclined towards the slag discharge port, and the bottom of the discharge chamber is inclined towards the mud discharge port. A flow meter is installed on the outer pipe of the mud discharge port.

[0007] The preferred technical solution of this utility model is as follows: The flipping mechanism includes a driving mechanism and first sliding rods symmetrically arranged on both sides of the first filter screen, with the first sliding rods located on the side of the first filter screen that is not adjacent to the filter screen storage cavity; first sliding grooves are respectively opened on the inner walls of the baffles on both sides of the filter box corresponding to the first filter screen where the first sliding rods are provided, and the two ends of each set of first sliding grooves extend to the filter screen storage cavities on both sides, and two sets of second sliding grooves are respectively provided in the filter screen storage cavities on both sides, with the two sets of second sliding grooves in each filter screen storage cavity corresponding to and communicating with the two sets of first sliding grooves; the first filter screen is slidably installed in the first sliding grooves through the first sliding rods on both sides, and the second filter screen is slidably installed in the second sliding grooves on both sides through the second sliding rods; the driving mechanism is installed at the end of one of the first sliding rods and connected to the first sliding rod through a transmission component, and the driving mechanism is drivenly connected to one of the second sliding rods of the second filter screen through a synchronous transmission mechanism.

[0008] The preferred technical solution of this utility model is as follows: The mud filtration device further includes a fixing component, which includes a second drive motor fixed in the drive mechanism mounting cavity, a first gear fixedly installed on the output shaft of the second drive motor, a first rotating rod disposed at the bottom end of the first gear, and a drive tooth plate located at the bottom of the filter box. The lower end of the first rotating rod extends out of the bottom of the filter box, and a second gear is fixedly installed at its bottom end. A limiting frame is sleeved on the outside of the second gear. The drive tooth plate is disposed on the inner frame wall of the limiting frame and meshes with the second gear. An inclined block is fixedly installed at one end of the limiting frame. Each set of vibration springs is provided with a guide rod, which is fixed on the base. The vibration spring is wound around the guide rod, with its lower end fixed on the base and its upper end fixed to the bottom of the filter box. An inclined groove matching the inclined block is provided at the top of the guide rod inside the vibration spring adjacent to the inclined block. Under the action of the second drive motor, the limiting frame is moved until the inclined block engages with the inclined groove.

[0009] The preferred technical solution of this utility model is as follows: a drying plate is slidably installed in the filter storage cavity on both sides of the filter box, a ventilation hole is provided on one side of the drying plate, and a scraper is provided at the top of the drying plate.

[0010] The preferred technical solution of this utility model is as follows: The driving mechanism is installed inside the baffle of the filter box, and a driving mechanism mounting cavity is provided inside the baffle of the filter box where the driving mechanism is installed; the driving mechanism includes a first driving motor, a lead screw, and a slider threaded onto the lead screw; the lead screw is vertically arranged at the end of the first filter screen away from the second filter screen, and is rotatably installed in the driving mechanism mounting cavity; the lower end of the lead screw extends vertically to below the bottom of the filter screen storage cavity on the same side; the first driving motor is fixedly installed in the driving mechanism mounting cavity, and its output shaft is fixedly connected to the lead screw; the slider is connected to one of the first slide rods of the first filter screen; the first driving motor controls the rotation of the lead screw, driving the slider to move up and down along the lead screw, thereby driving the first filter screen to slide along the first slide groove into the filter screen storage cavity where the second filter screen is not installed.

[0011] The preferred technical solution of this utility model is as follows: The synchronous transmission mechanism includes a synchronous rod disposed on one side of the slider, and a synchronous block is rotatably mounted on the end of the synchronous rod away from the slider; two second slide rods are provided on each side of the second filter screen, and the two second slide rods on the same side are respectively disposed at the upper and lower ends of the second filter screen; the synchronous block is fixedly installed on the second slide rod on the upper end of the second filter screen on the same side as the driving mechanism; and when the slider moves up and down along the lead screw, the second slide rod is driven to slide along the second slide groove and the first slide groove through the synchronous rod.

[0012] The preferred technical solution of this utility model is as follows: each side of the first filter screen is provided with two first sliding rods, and the two first sliding rods on the same side are respectively set at both ends of the first filter screen adjacent to the storage cavity of the two filter screens.

[0013] The preferred technical solution of this utility model is as follows: The filtering device further includes a barrier component, which includes a second rotating rod and a barrier plate located in the feed chamber. The second rotating rod is rotatably installed in the drive mechanism mounting cavity and extends vertically to the height of the feed chamber. It is connected to the barrier plate through a handle. A third gear is fixedly installed at the same height as the first gear on the second rotating rod, and the third gear meshes with the first gear.

[0014] The preferred technical solution of this utility model is as follows: the cross-sectional area of ​​the barrier plate is larger than the cross-sectional area of ​​the feed inlet, and a barrier groove is provided on one side of the bottom end of the feed inlet. The barrier groove is opened on the inner wall of the filter box, and the barrier plate is slidably installed in the barrier groove.

[0015] The advantages of this utility model are:

[0016] (1) By setting up a driving mechanism and a flipping mechanism, when a lot of viscous substances are attached to the surface of the first filter screen, the operator can start the driving mechanism, thereby driving the flipping mechanism to operate, so that the first filter screen flips to one side of the filter box, and drives the second filter screen to flip to the position of the first filter screen, thus realizing the filter screen replacement process; the filter screen replacement process of this utility model 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 impact of viscous substances in the mud on the filter screen filtration effect, and improves the overall working efficiency of the filter device;

[0017] (2) By setting a fixing component, the present invention allows the operator to start the first drive motor before replacing the first filter screen. The first drive motor drives the inclined block to move to abut against the inclined groove through the first gear, the first rotating rod and the drive tooth plate, thereby fixing the filter box. This avoids the problem of waiting for the closed filter box to stop vibrating before replacing the first filter screen, which would prolong the overall shutdown time of the mud and water circulation treatment device and reduce the overall working efficiency of the mud and water circulation treatment device. It also shortens the time for replacing the first filter screen and improves 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 screen can be made more stable. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the flipping mechanism of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This utility model Figure 2 Enlarged view of point B in the middle;

[0023] Figure 5 This is a cross-sectional structural diagram of the barrier component of this utility model.

[0024] In the diagram: 1. Base; 2. Vibration spring; 3. Filter box; 4. Feed inlet; 5. Slag outlet; 6. Mud outlet; 7. First filter screen; 8. First drive rod; 9. First chute; 10. Slider; 11. Lead screw; 12. First drive motor; 13. First gear; 14. Second drive motor; 15. Synchronizing rod; 16. Synchronizing block; 17. Second drive rod; 18. Second filter screen; 19. First rotating rod; 20. Drive toothed plate; 21. Inclined block; 22. Guide rod; 23. Inclined groove; 24. Limiting frame; 25. Buffer spring; 26. Second gear; 27. Third gear; 28. Second rotating rod; 29. ​​Rotating handle; 30. Baffle plate; 31. Baffle groove; 32. Drying plate; 33. Scraper; 34. Second chute; 35. Flow meter. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] Example 1 provides a mud filtration device, such as Figures 1 to 5As shown, the system 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 top of the vibration springs 2. A vibration motor is fixedly installed at the bottom of the filter box 3, located between the base 1 and the filter box 3, to provide vibration power to the filter box 3. A feed inlet 4 is fixedly installed on the top of the filter box 3. A slag discharge outlet 5 is fixedly installed on one side of the filter box 3. A mud outlet 6 is provided at the bottom of the other side of the filter box 3. A flow rate gauge 36 is installed on the outer wall of the mud outlet 6. The filter box 3 has a first filter screen 7 installed inside, which divides the inner cavity of the filter box 3 into an upper feed chamber and a lower discharge chamber. The feed inlet 4 is located at the top of the feed chamber, the slag discharge port 5 is located on the lower side of the feed chamber, and the mud discharge port 6 is located at the bottom of the discharge chamber. The bottom of the first filter screen 7 and the discharge chamber are both inclined, with an inclination angle of no more than 15°. The first filter screen 7 is inclined towards the slag discharge port 5, and the bottom of the discharge chamber is inclined towards the mud discharge port 6. This ensures that large particles of mud can be smoothly discharged through the slag discharge port during vibration, and the filtered slurry can be smoothly discharged through the mud discharge port 6.

[0027] Example 1 provides a mud filtration device, such as Figures 1 to 5 As shown, the first filter screen 7 is installed in the filter box 3 through a flipping mechanism. 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 openings that match the first filter screen 7 at the positions corresponding to the first filter screen 7. 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 flipping mechanism includes a drive mechanism and first slide rods 8 symmetrically arranged on the front and rear sides of the first filter screen 7 that are not adjacent to the filter screen storage cavity. Two first slide rods 8 are provided on each side, with the two first slide rods 8 on the same side respectively located 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 front and rear side baffles of the filter box 3 corresponding to the first filter screen 7 where the first slide rods 8 are located. The two ends of the two sets of first sliding grooves 9 extend to the left and right filter screen storage cavities respectively. Two sets of second sliding grooves 34 are respectively provided in the filter screen storage cavities on both sides. The two sets of second sliding grooves 34 in each filter screen storage cavity are respectively connected to the two sets of first sliding grooves 9, forming two "..." The filter screen 7 is slidably mounted in the first slide groove 9 via first slide rods 8 on both sides. The drive mechanism is installed at the end of one of the first slide rods 8 and can drive the first slide rod 8 to slide along the first slide groove 9 and the second slide groove 34, so that the first slide rod 8 can drive the first filter screen 7 to move stably and smoothly into the filter storage cavity of the filter box 3 away from the second filter screen 18. The second filter screen 18 is connected to the drive mechanism through a synchronous transmission mechanism. When the drive mechanism drives the first filter screen 7 to move towards the filter storage cavity away from the second filter screen 18, it simultaneously drives the second filter screen 18 to move back to the original position of the first filter screen 7, realizing the filter replacement process.

[0028] In Embodiment 1, the drive mechanism is installed inside the baffle of the filter box 3. The thickness of the baffle of the filter box 3 is sufficient for the installation of the drive mechanism and for the setting of the filter screen storage cavity. To facilitate the installation of the drive mechanism, a drive mechanism mounting cavity can be provided inside the baffle of the filter box where the drive mechanism is installed, such as... Figures 2 to 4 As shown, the device includes a first drive motor 12, a lead screw 11, and a slider 10 threaded onto the lead screw. The lead screw 11 is vertically positioned at the end of the first filter 7 away from the second filter 18 and is rotatably mounted within the drive mechanism mounting cavity. The slider 10 is initially located at the upper end of the lead screw 11 and is connected to a first sliding rod 8 on the same side as the first filter 7. The lower end of the lead screw 11 extends vertically below the bottom of the filter storage cavity on the same side. The first drive motor 12 is fixedly mounted within the drive mechanism mounting cavity, and the output shaft of the first drive motor 12 is connected to the lead screw 11. The lower end is fixedly connected, and the input end of the first drive motor 12 is electrically connected to an external power supply. By setting a drive mechanism, when the first filter screen 7 needs to be replaced, the first drive motor 12 can be started, and the first drive motor 12 controls the lead screw 11 to rotate. The slider 10 moves downward along the lead screw 11, thereby driving one end of the first filter screen 7 to slide along the first slide groove 9 into the filter screen storage cavity where the second filter screen 18 is not installed. This reduces the number of filter screen replacement steps and improves work efficiency. The model of the first drive motor 12 is HG KN73BJ S100.

[0029] In Embodiment 1, the synchronous transmission mechanism is as follows: Figure 2 , Figure 3 and Figure 5As shown, the system includes a synchronizing rod 15 disposed 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 sliding rods 17 are symmetrically arranged on the front and rear sides of the second filter screen 18, and are slidably installed in the second slide groove 34 corresponding to the filter screen storage cavity via the second sliding rods 17 on the front and rear sides. Two second sliding rods 17 are provided on each side, and the two second sliding rods 17 on the same side are respectively disposed 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 installed on the upper end of the second sliding rod 17 of the second filter screen 18 adjacent to the first filter screen 7. When the slider 10 moves up and down along the lead screw 11, the synchronizing rod 15 drives the synchronizing block 16 and the second sliding rods 17 connected to the synchronizing block 16 to move along the second slide groove 34 and the first slide groove 9. When the slider 10 moves down along the lead screw 11, the synchronizing block 16 drives the second sliding rods 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 the filtration work.

[0030] In summary, by combining the flipping mechanism and the synchronous transmission mechanism, when the first filter screen 7 is covered with a large amount of viscous material, the operator can start the first drive motor 12. The first drive motor 12 drives the flipping mechanism through the first gear 13, thereby moving the first filter screen 7 to one side of the filter box 3. At the same time, the synchronous transmission mechanism moves the second filter screen 18 to the original position of the first filter screen 7, that is, the bottom of the feed inlet 4. This allows the operator to replace the first filter screen 7 and the second filter screen 18 without disassembling the filter box 3, simplifying the replacement steps of the first filter screen 7 and improving the working efficiency of the mud and water filtration device.

[0031] The mud filtration device provided in Embodiment 2, in addition to the structure in Embodiment 1, also includes a fixing component; such as Figure 2 , Figure 4 and Figure 5As shown, each set of vibration springs 2 is equipped with a guide rod 22. The guide rod 22 is fixed on the base 1. The vibration spring 2 is wrapped around the guide rod 22, with the lower end fixed on the base 1 and the upper end fixed to the bottom of the filter box 3. By setting the guide rod 22, the filter box 3 can be guided left and right when it vibrates with a small amplitude for a long time, so that the filter box 3 can move back and forth in the vertical direction, avoiding the filter box 3 from vibrating in the horizontal direction, which would cause the vibration spring 2 to bend and break. The fixing assembly includes a second drive motor 14 fixed in the drive mechanism mounting cavity, a first gear 13 fixedly installed on the output shaft of the second drive motor 14, a first rotating rod 19 disposed at the bottom end of the first gear 13, and a drive 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 drive gear plate 20 are connected. In order to prevent the second gear 26 from detaching from the drive gear plate 20, a limiting frame 24 is provided on the outside of the second gear 26. The drive gear plate 20 is disposed in the inner frame of the limiting frame 24. An inclined block 21 is fixedly installed at the end of the frame of the limiting frame 24. An inclined groove 23 matching the inclined block 21 is provided at the top end of the internal guide rod 22 of the vibration spring adjacent to the inclined block 21.

[0032] When the filter screen is being replaced, if the guide rod 22 is at a low horizontal position, the second drive motor 14 will rotate the first rotating rod 19, causing the inclined block 21 of the drive toothed plate 20 to move towards the inclined groove 23. This allows the inclined block 21 at the end of the drive toothed plate 20 to abut against the inner wall of the inclined groove 23. 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, thus fixing the position between the base 1 and the filter box 3. This allows the filter box 3 to quickly stop vibrating, preventing vibration from affecting the filter screen replacement and improving the filter screen replacement efficiency. To ensure stable fixing, an additional fixing assembly can be installed at the diagonal part of the filter box 3, and a second drive motor can be added at the diagonal part. The first rotating rod of this fixing assembly is powered by the added second drive motor to control its rotation.

[0033] Please see Figures 2-4 and Figure 5As shown, the mud filtration device in Embodiment 2 further includes a barrier component. The barrier component includes a second rotating rod 28 and a barrier plate 30 located in the feed chamber. The second rotating rod 28 is rotatably installed in the drive mechanism mounting cavity and extends vertically to the height of the feed chamber. It is connected to the barrier plate 30 through a handle 29. A third gear 27 is fixedly installed at the same height as the first gear 13 on the second rotating rod 28. The third gear 27 meshes with the first gear 13. By setting the third gear 27, the second rotating rod 28 can be driven to rotate simultaneously when the second drive motor 14 is working. The position of the second rotating rod 28 avoids the position of the synchronizing rod 15, so as to prevent the second rotating rod 28 from abutting against one side of the synchronizing rod 15 and hindering the movement of the synchronizing rod 15. A handle 29 is fixedly installed at the top of the second rotating rod 28. The handle 29 passes through the filter box 3 and extends into the filter box 3 to connect with the barrier plate 30. The baffle plate 30 is located below the feed inlet 4. During the filter screen replacement process, the second drive motor 14 controls the baffle plate 30 to rotate directly below the feed inlet 4 to block the feed inlet. This prevents sludge from continuously entering the filter box 3 through the feed inlet 4 when the first filter screen 7 is being replaced, thus hindering the replacement of the first filter screen 7. In addition, unfiltered sludge flowing directly out of the sludge outlet 6 will also cause a decrease in the sludge-water separation effect of the sludge-water circulation treatment device.

[0034] Please see Figure 5 As shown, in Embodiment 2, the cross-sectional area of ​​the baffle plate 30 is larger than that of the feed inlet 4. A baffle groove 31 is provided on one side of the bottom end of the feed inlet 4. The baffle groove 31 is opened on the inner wall of the filter box 3. The baffle plate 30 is slidably installed on the inner wall of the baffle groove 31, which can completely block the bottom end of the feed inlet 4, improve the baffle effect of the baffle assembly on the mud, and avoid the problem that when one end of the baffle plate 30 is close to the bottom end of the feed inlet 4, the mud can easily fall into the filter box 3 from the gap between one end of the baffle plate 30 and the bottom end of the feed inlet 4, which would reduce the baffle effect of the baffle assembly.

[0035] Please see Figures 1-2 and Figure 5As shown, in both Embodiment 1 and Embodiment 2, drying plates 32 are slidably installed in the filter storage cavities on both sides of the filter box 3. A ventilation hole is provided on one side of the drying plate 32, which enhances airflow when the first filter 7 moves to one side of the drying plate 32, thereby accelerating the drying of the viscous substance on the surface of the first filter 7 and making it easier to separate impurities from 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 near the filter box 3 is curved, and the side away from the filter box 3 is straight. This allows the filter located below the mud inlet to have its surface scraped by the scraper 33 when it moves to the filter storage cavities on both sides, further separating the residue on the filter surface. This cleans the replaced filter, allowing it to be reused and increasing the filtration effect. A mud discharge port is provided at the bottom of the filter screen storage chambers on both sides, which can discharge the mud that falls into the filter screen storage chambers; the bottom of the filter screen storage chambers on both sides can also be opened to clean out the fallen mud; or the filter screens in the filter screen storage chambers can be taken out for cleaning and easy reuse.

[0036] The working process of this utility model is as follows: A large amount of viscous substance adheres to the surface of the first filter screen 7, causing a decrease in the filtration efficiency of the mud-water filtration device. The operator observes the flow rate and turns off the vibration motor. When the vibration amplitude of the filter box 3 is difficult to observe, the operator starts the second drive motor 14. The second drive motor 14 drives the first gear 13 to rotate, the first gear 13 drives the third gear 27 to rotate, 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 baffle plate 30 to move to the inner wall of the baffle groove 31, preventing 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, the first rotating rod 19 drives the drive tooth plate 20 to move, and the drive tooth plate 20 drives the inclined block 21 to move towards the inner wall of the baffle groove 31. The guide rod 22 with the inclined groove 23 moves in a direction that causes the inclined block 21 to move the inclined groove 23 closer to the filter box 3 until the inclined block 21 moves to fully contact the inclined groove 23. The buffer tooth plate 24 compresses the buffer spring 25, causing the buffer spring 25 to undergo elastic deformation and accumulate elastic potential energy. When the toothed block at the bottom of the first rotating rod 19 stops contacting the buffer tooth plate 24, the buffer spring 25 releases its elastic potential energy and undergoes elastic deformation, causing the buffer tooth plate 24 to move away from the driving tooth plate 20. This causes the buffer tooth plate 24 to engage with the first rotating rod 19 again, thus ensuring that the buffer tooth plate 24 is always engaged with the first rotating rod 19. This fixes the position between the filter box 3 and the base 1, thereby quickly stopping the vibration of the filter box 3.

[0037] After the vibrating screen stops feeding and vibrating, the second drive power supply 14 is turned off, and the first drive motor 12 is turned on. The first drive motor 12 drives the lead screw 11 to rotate, so that the lead screw 11 drives the slider 10 to move closer to the base 1. The slider 10 drives the first slide rod 8 to move, and the first slide rod 8 drives the first filter screen 7 to move along the first slide groove 9, so that the first filter screen 7 leaves from the bottom of the feed port 4 and enters the filter screen storage cavity on one side. At the same time, the slider 10 drives the synchronous rod 15 to move, the synchronous rod 15 drives the synchronous block 16 to move, and the synchronous block 16 drives the second slide rod 17 to move, so that the second slide rod 17 moves along the first slide groove 9, thereby causing the second filter screen 18 to flip back to the bottom of the feed port 4, which is the original position of the first filter screen 7, thus completing the replacement of the first filter screen 7.

[0038] When the first filter screen 7 flips to one side of the drying plate 32, the vents in the drying plate 32 accelerate the drying of the viscous substances on the surface. At the same time, the vibration of the filter box 3 shakes off the dried deposits. When a lot of viscous substances are attached to the surface of the second filter screen 18, the operator starts the first drive motor 12 in reverse. The first drive motor 12 leads the lead screw 11 to drive the first filter screen 7 to flip to the bottom of the feed inlet 4. The second filter screen 18 is then flipped to one side of the drying plate 32 by the synchronizing rod 15, synchronizing block 16 and second slide rod 17, thus completing the replacement of the second filter screen 18. While the first filter screen 7 is flipping, the scraper 33 scrapes off the residue on the surface of the first filter screen 7, further improving the filtration efficiency of the first filter screen 7. The above steps are repeated continuously to replace the first filter screen 7 and the second filter screen 18, thereby improving the filtration efficiency of the mud and water filtration device.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A mud filtration device, comprising a base (1) and a filter box (3), wherein the filter box (3) is mounted on the base (1) by multiple sets of vibration springs (2), and a vibration motor is fixedly installed at the bottom end of the filter box (3) to provide vibration power to the filter box, characterized in that: The filter box (3) is movably installed with a first filter screen (7), and the inner cavity of the filter box (3) is divided into an upper feed chamber and a lower discharge chamber by the first filter screen (7). A feed inlet (4) communicating with the feed chamber is provided at the top of the filter box (3), a slag discharge port (5) is provided at the bottom of the feed chamber of the filter box (3), and a mud discharge port (6) is provided at the bottom of the discharge chamber of the filter box (3). The first filter screen (7) is installed in the filter box (3) by a flipping mechanism. Filter screen storage chambers are 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 chambers are respectively provided with openings that match the first filter screen (7) at the positions corresponding to the first filter screen (7). A second filter screen (18) is slidably installed in the filter screen storage chamber 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 flipping mechanism is connected to the second filter screen (18) by a linkage mechanism.

2. The mud filtration device according to claim 1, characterized in that: The first filter screen (7) and the bottom of the discharge chamber are both inclined, and the inclination angle is no more 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).

3. A mud filtration device according to claim 1 or 2, characterized in that: The flipping mechanism includes a driving mechanism and first slide rods (8) symmetrically arranged on both sides of the first filter screen (7), and the first slide rods (8) are located on the side of the first filter screen (7) that is not adjacent to the filter screen storage cavity; first slide grooves (9) are respectively opened on the inner walls of the baffles on both sides of the filter box (3) corresponding to the first filter screen (7) where the first slide rods (8) are provided, and the two ends of each set of first slide grooves (9) extend to the filter screen storage cavities on both sides respectively, and two sets of second slide grooves (34) are respectively provided in the filter screen storage cavities on both sides. The groove (34) is connected to the two sets of first sliding grooves (9) respectively; the first filter screen (7) is slidably installed in the first sliding groove (9) through the first sliding rods (8) on both sides, and the second filter screen (18) is slidably installed in the second sliding groove (34) through the second sliding rods (17) on both sides respectively; the driving mechanism is installed at the end of one of the first sliding rods (8) and connected to the first sliding rod (8) through the transmission assembly, and the driving mechanism is connected to one of the second sliding rods (17) of the second filter screen (18) through the synchronous transmission mechanism.

4. A mud filtration device according to claim 1 or 2, characterized in that: The mud filtration device also includes a fixing component, which includes a second drive motor (14) fixed in the drive mechanism mounting cavity, a first gear (13) fixedly mounted on the output shaft of the second drive motor (14), a first rotating rod (19) located at the bottom end of the first gear (13), and a drive 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 mounted at its bottom end. A limiting frame (24) is sleeved on the outside of the second gear (26). The drive gear plate (20) is located on the inner frame wall of the limiting frame (24) and is connected to the first drive motor (14). Two gears (26) mesh, and an inclined block (21) is fixedly installed at one end of the limiting frame (24); each set 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 wrapped around 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). The top of the guide rod (22) inside the vibration spring adjacent to the inclined block (21) is provided with an inclined groove (23) that matches the inclined block (21); and under the action of the second drive motor (14), the limiting frame (24) is moved until the inclined block (21) and the inclined groove (23) are engaged.

5. A mud filtration device according to claim 1 or 2, characterized in that: Drying plates (32) are slidably installed in the filter 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 at the top of the drying plate (32).

6. A mud filtration device according to claim 3, characterized in that: The drive mechanism is installed inside the baffle of the filter box (3), and a drive mechanism mounting cavity is provided inside the baffle of the filter box where the drive mechanism is installed; the drive mechanism includes a first drive motor (12), a lead screw (11) and a slider (10) threaded on the lead screw. The lead screw (11) is vertically arranged at the end of the first filter screen (7) away from the second filter screen (18) and is rotatably installed in the drive mechanism mounting cavity. The lower end of the lead screw (11) extends vertically to below the bottom of the filter screen storage cavity on the same side. The first drive motor (12) is fixedly installed in the drive mechanism mounting cavity, and its output shaft is fixedly connected to the lead screw (11). The slider (10) is connected to one of the first slide rods (8) of the first filter screen (7). The first drive motor (12) controls the lead screw (11) to rotate, driving the slider (10) to move up and down along the lead screw (11), thereby driving the first filter screen (7) to slide along the first slide groove (9) to the filter screen storage cavity where the second filter screen (18) is not installed.

7. A mud filtration device according to claim 3, characterized in that: The synchronous transmission mechanism includes a synchronous rod (15) disposed on one side of the slider (10), and a synchronous block (16) is rotatably mounted 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 disposed 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 second filter screen (18) and the drive mechanism; and when the slider (10) moves up and down along the lead screw (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).

8. A mud filtration device according to claim 3, characterized in that: The first filter screen (7) is provided with two first slide rods (8) on each side, and the two first slide rods (8) on the same side are respectively set at both ends of the first filter screen (7) adjacent to the two filter screen storage cavities.

9. A mud filtration device according to claim 4, characterized in that: The filtering device further includes a barrier component, which includes a second rotating rod (28) and a barrier plate (30) located in the feed chamber. The second rotating rod (28) is rotatably installed in the drive mechanism mounting cavity and extends vertically to the height of the feed chamber. It is connected to the barrier plate (30) through a rotating handle (29). A third gear (27) is fixedly installed at the same height as the second rotating rod (28) and the first gear (13). The third gear (27) meshes with the first gear (13).

10. A mud filtration device according to claim 9, characterized in that: The cross-sectional area of ​​the barrier plate (30) is larger than that of the feed inlet (4). A barrier groove (31) is provided on one side of the bottom end of the feed inlet (4). The barrier groove (31) is opened on the inner wall of the filter box (3). The barrier plate (30) is slidably installed on the inner wall of the barrier groove (31).

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