Centrifugal filtering and dewatering all-in-one machine

Abstract

The utility model discloses a centrifugal filtering and dewatering all-in-one machine, which is used for pre-filtering obtained sludge through a filtering assembly to reduce a small amount of moisture. And then the filtering assembly is started through the second driving motor to input the sludge into a centrifugal cylinder arranged in the working box. A wall scraping assembly sequentially penetrates through the working box and the top face of the centrifugal barrel, finally stretches into the bottom wall of the centrifugal barrel and makes contact with the inner side wall of the centrifugal barrel. At the moment, the bottom of the centrifugal barrel is stably clamped with a clamping block, then a first driving motor is started, the centrifugal barrel is rotated at a high speed through a bearing and a rotating shaft, water in the sludge is centrifuged and thrown out of the centrifugal barrel, and the sludge on the inner wall of the centrifugal barrel is continuously scraped through a wall scraping assembly, so that the sludge is prevented from blocking centrifugal holes in the centrifugal process; therefore, the technical problems that viscous sludge easily forms a colloidal structure in the centrifugal process and is attached to the inner wall of a rotary drum or the surface of a filter screen, blockage is caused, frequent shutdown cleaning is needed, and the continuous operation efficiency is seriously influenced are solved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal dehydration technology, specifically to a centrifugal filtration and dehydration integrated machine. Background Technology

[0002] In environmental monitoring, sludge has a water content as high as 90%, is fluid, has a large volume, and incurs high transportation costs. Dewatering can significantly reduce its volume and weight, lower transportation and disposal costs, while improving sludge stability and reducing the risk of foul odors and secondary pollution from organic matter decay. Dewatered sludge is easier to incinerate, landfill, or utilize for resource recovery, such as in fertilizer production and energy recovery, achieving the goals of volume reduction, harmlessness, and resource utilization, ensuring environmental safety, and optimizing resource efficiency.

[0003] Traditional centrifugal dewatering equipment relies primarily on centrifugal force generated by high-speed rotation to achieve solid-liquid separation. Its core principle is that the high-speed rotation of the drum causes solid particles in the sludge to deposit on the inner wall of the drum due to centrifugal force, while the liquid is discharged from the overflow port. However, this single centrifugal separation method has significant limitations in practical applications: sticky sludge easily forms a gel-like structure during centrifugation, adhering to the inner wall of the drum or the surface of the filter screen, causing blockages and requiring frequent shutdowns for cleaning, severely impacting continuous operation efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal filtration and dewatering integrated machine to solve the technical problem that viscous sludge easily forms a gel-like structure during centrifugation, adhering to the inner wall of the drum or the surface of the filter screen, causing blockage, requiring frequent shutdowns for cleaning, and seriously affecting continuous operation efficiency.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A centrifugal filtration and dehydration integrated machine includes a working box, a bearing on the bottom surface of the working box, a rotating shaft inside the bearing, a first drive motor below the working box, the output shaft of the first drive motor extending into the working box and connected to the rotating shaft, a locking block on the top surface of the rotating shaft, a centrifuge cylinder inside the working box, the bottom of the centrifuge cylinder engaging with the locking block, a wall scraping assembly passing through the top surface of the working box, the wall scraping assembly extending into the centrifuge cylinder and contacting the inner wall, a filter assembly on the side of the working box, the starting end of the filter assembly being connected to the output shaft of a second drive motor located on the top surface of the working box.

[0007] A further technical solution is that the scraping assembly includes a scraper, the bottom end of which passes through the top surface of the working chamber and extends into the centrifuge cylinder to contact the inner wall of the centrifuge cylinder.

[0008] A further technical solution is that the scraper is provided with a limiting block that contacts the top surface of the work box, and the top of the scraper is provided with a gripping ring.

[0009] A further technical solution is that the filter assembly includes a receiving cylinder, the bottom of which is provided with a conveying channel communicating with the working box. A spiral conveying rod is provided in the conveying channel. One end of the spiral conveying rod is rotatably connected to the inner side wall of the receiving cylinder, and the other end is connected to the output shaft of the second drive motor through a transmission belt. A filter base plate is provided on the bottom surface of the receiving cylinder.

[0010] A further technical solution is that a guide plate is provided below the inner part of the spiral conveyor rod, one side of the guide plate is fixed to the inner side of the working box, and the other end is inclined towards the top surface of the centrifuge cylinder.

[0011] A further technical solution is that a sliding groove is provided on one side of the bottom surface of the centrifuge tube, the sliding groove is slidably connected to the locking block, and a locking slot is provided in the centrifuge tube, the locking slot being connected to the sliding groove.

[0012] A further technical solution is that the card block is provided with a protruding rod, and the card slot is provided with a horizontal groove and a vertical groove. The card block enters the card slot through the sliding groove and contacts the horizontal groove. It falls down by rotating the centrifuge cylinder, and the protruding rod engages with the vertical groove.

[0013] A further technical solution is that the side of the work box is provided with an opening and closing plate, the top of the opening and closing plate is rotatably connected to the side of the work box, the bottom is provided with a first buckle, and the side of the work box is provided with a second buckle opposite to it. The first buckle and the second buckle are connected by a pin.

[0014] A further technical solution is that the bottom surface of the work box is provided with multiple through pipes and multiple support feet, the top of the through pipes is connected to the work box, and the first drive motor is located between the multiple support feet.

[0015] A further technical solution is that the first drive motor is provided with multiple support rods that are correspondingly connected to multiple support feet.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The acquired sludge is pre-filtered through a filter assembly to reduce a small amount of moisture. Then, the second drive motor activates the filter assembly to feed the sludge into the centrifuge drum inside the working chamber. The scraper assembly passes through the working chamber and the top surface of the centrifuge drum, finally reaching the bottom wall and contacting the inner wall. At this point, the bottom of the centrifuge drum is stably engaged with the locking block. The first drive motor is then activated, and the centrifuge drum rotates at high speed via bearings and a rotating shaft. This centrifuges the water in the sludge, removing it from the drum. The scraper assembly continuously scrapes away sludge from the inner wall of the centrifuge drum, preventing sludge from clogging the centrifuge holes during centrifugation. This solves the technical problem of sticky sludge easily forming a gel-like structure during centrifugation, adhering to the inner wall of the drum or the surface of the filter screen, causing blockages, requiring frequent shutdowns for cleaning, and severely impacting continuous operating efficiency.

[0018] 2. The bottom of the centrifuge tube is equipped with a sliding groove to facilitate the removal of the centrifuge tube from the working chamber, and a sliding locking block is provided to slide the locking block into the locking groove position to ensure that the centrifuge tube cannot detach from the rotating shaft at high speed, thus ensuring the stable operation of the centrifuge tube. Attached Figure Description

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

[0020] Figure 2 This is a schematic cross-sectional view of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram of the connection structure of the card block, card slot, and slide.

[0023] In the diagram, 1. Working box; 2. Bearing; 3. Rotating shaft; 4. First drive motor; 5. Clamping block; 6. Centrifuge cylinder; 7. Second drive motor; 8. Scraper; 9. Limiting block; 10. Holding ring; 11. Receiving cylinder; 12. Conveying channel; 13. Spiral conveying rod; 14. Transmission belt; 15. Filter base plate; 16. Guide plate; 17. Slide groove; 18. Slot; 19. Threaded rod; 20. Opening and closing plate; 21. First buckle; 22. Second buckle; 23. Pin; 24. Through pipe; 25. Support foot; 26. Receiving rod. Detailed Implementation

[0024] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0025] See Figures 1 to 4The utility model provides a centrifugal filtration and dehydration integrated machine, including a working box 1, a bearing 2 is provided on the bottom surface of the working box 1, a rotating shaft 3 is sleeved inside the bearing 2, a first drive motor 4 is provided below the working box 1, the output shaft of the first drive motor 4 extends into the working box 1 and is connected to the rotating shaft 3, a locking block 5 is provided on the top surface of the rotating shaft 3, a centrifuge cylinder 6 is provided inside the working box 1, the bottom of the centrifuge cylinder 6 is engaged with the locking block 5, a wall scraping assembly is provided on the top surface of the working box 1, the wall scraping assembly extends into the centrifuge cylinder 6 and contacts the inner wall, a filter assembly is provided on the side of the working box 1, and the starting end of the filter assembly is connected to the output shaft of the second drive motor 7 provided on the top surface of the working box 1.

[0026] In this embodiment, both the first drive motor 4 and the second drive motor 7 can be servo motors.

[0027] Specifically, the acquired sludge undergoes pre-filtration through a filter assembly to reduce a small amount of moisture. Then, the second drive motor 7 activates the filter assembly to feed the sludge into the centrifuge drum 6 located within the working chamber 1. The scraper assembly passes sequentially through the working chamber 1 and the top surface of the centrifuge drum 6, finally extending into the bottom wall of the centrifuge drum 6 and contacting its inner sidewall. At this point, the bottom of the centrifuge drum 6 is stably engaged with the locking block 5. Subsequently, the first drive motor 4 is activated, and the centrifuge drum 6 rotates at high speed via the bearing 2 and the rotating shaft 3, causing the water in the sludge to be centrifuged and ejected from the centrifuge drum 6. The scraper assembly continuously scrapes away sludge from the inner wall of the centrifuge drum 6, preventing sludge from clogging the centrifuge holes during centrifugation. This solves the technical problem that sticky sludge easily forms a gel-like structure during centrifugation, adhering to the inner wall of the drum or the surface of the filter screen, causing blockage and requiring frequent shutdowns for cleaning, severely impacting continuous operating efficiency.

[0028] Preferably, the scraping assembly includes a scraper 8, the bottom end of which passes through the top surface of the working chamber 1 and extends into the centrifuge cylinder 6 to contact the inner wall of the centrifuge cylinder 6.

[0029] In this embodiment, the scraper 8 passes through the top surface of the working chamber 1 and extends its bottom end into the centrifuge cylinder 6. This allows the inner wall of the centrifuge cylinder 6 to contact the scraper 8 during rotation, thereby scraping away the sludge blocking the centrifuge holes and preventing blockage.

[0030] Preferably, the scraper 8 is provided with a limiting block 9 that contacts the top surface of the work box 1, and the top end of the scraper 8 is provided with a gripping ring 10.

[0031] In this embodiment, by gripping the holding ring 10, the scraper 8 can be easily inserted into the centrifuge cylinder 6 through the top surface of the working box 1. When it reaches the position of the limiting block 9, the insertion is stopped to prevent the scraper 8 from extending too far and contacting the bottom surface of the centrifuge cylinder 6, thereby increasing the rotational friction of the centrifuge cylinder 6.

[0032] Preferably, the filter assembly includes a receiving cylinder 11, with a conveying channel 12 at the bottom of the receiving cylinder 11 communicating with the working box 1. A spiral conveying rod 13 is provided in the conveying channel 12. One end of the spiral conveying rod 13 is rotatably connected to the inner side wall of the receiving cylinder 11, and the other end is connected to the output shaft of the second drive motor 7 through a transmission belt 14. A filter base plate 15 is provided on the bottom surface of the receiving cylinder 11.

[0033] In this embodiment, after the acquired sludge is put into the receiving cylinder 11, the second drive motor 7 is started, and the screw conveyor 13 is slowly driven by the conveyor belt. The other end of the screw conveyor 13 begins to convey the sludge. During the conveying process, the sludge is slightly squeezed and a small amount of water is initially filtered through the filter bottom plate 15. The sludge is then continuously conveyed into the working box 1 through the screw conveyor 13.

[0034] Preferably, a guide plate 16 is provided below the inner part of the spiral conveyor rod 13 located in the working box 1. One side of the guide plate 16 is fixed to the inner side of the working box 1, and the other end is inclined towards the top surface of the centrifuge cylinder 6.

[0035] In this embodiment, the sludge conveyed by the screw conveyor 13 falls onto the top surface of the guide plate 16, where a small amount of water is again guided away. Under the influence of its own gravity, the sludge flows into the centrifuge cylinder 6.

[0036] Preferably, a sliding groove 17 is provided on one side of the bottom surface of the centrifuge cylinder 6, the sliding groove 17 is slidably connected to the locking block 5, and a locking groove 18 is provided in the centrifuge cylinder 6, the locking groove 18 is connected to the sliding groove 17.

[0037] In this embodiment, when centrifuge cylinder 6 needs to be installed, centrifuge cylinder 6 is inserted into working box 1. The sliding groove 17 at the bottom of centrifuge cylinder 6 is connected to the locking block 5. Centrifuge cylinder 6 is continuously slid so that the locking block 5 contacts the locking groove 18 and completes the locking.

[0038] Furthermore, the locking block 5 is trapezoidal, the sliding groove 17 is a corresponding trapezoidal groove, the centrifuge cylinder 6 is provided with a trapezoidal locking groove 18 in the middle, and the bottom surface of the centrifuge cylinder 6 is provided with a threaded rod 19, which rotates into the locking groove 18 and contacts the locking block 5.

[0039] In this embodiment, the locking block 5 is slid into the locking slot 18 through the sliding groove 17. The centrifuge cylinder 6 falls under its own weight, causing the locking slot 18 to engage with the locking block 5. Then, by rotating the threaded rod 19, the threaded rod extends upwards, bringing the locking block 5 into tight contact with the locking slot 18. This ensures that the centrifuge cylinder 6 cannot detach from the rotating shaft 3 at high speed, guaranteeing stable operation of the centrifuge cylinder 6.

[0040] Preferably, the top of the opening and closing plate 20 is rotatably connected to the side of the work box 1, and the bottom is provided with a first buckle 21. The side of the work box 1 is provided with a second buckle 22 opposite to it. The first buckle 21 and the second buckle 22 are connected by a pin 23.

[0041] In this embodiment, when it is necessary to remove or install the centrifuge tube 6, the opening and closing plate 20 can be opened to facilitate the removal or installation of the centrifuge tube 6.

[0042] Specifically, pull out the pin 23 to separate it from the first latch 21 and the second latch 22, and then open the opening and closing plate 20. When closing, insert the pin 23 into the first latch 21 and the second latch 22 in sequence to stably connect the opening and closing plate 20 to the work box 1.

[0043] Preferably, the bottom surface of the work box 1 is provided with multiple through pipes 24 and multiple support feet 25, the top of the through pipes 24 are connected to the work box 1, and the first drive motor 4 is located between the multiple support feet 25.

[0044] In this embodiment, the through pipe 24 is used to circulate the water ejected from the centrifuge tube 6. The support foot 25 is used to support the stable operation of the working box 1.

[0045] Preferably, the first drive motor 4 is provided with multiple support rods 26 that are correspondingly connected to multiple support feet 25.

[0046] In this embodiment, the first drive motor 4 and the support foot 25 are connected by a support rod 26, which plays a role in stabilizing the operation of the first drive motor 4.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centrifugal filtration and dehydration integrated machine, characterized in that, The device includes a working chamber, a bearing on the bottom surface of the working chamber, a rotating shaft fitted inside the bearing, a first drive motor below the working chamber, an output shaft of the first drive motor extending into the working chamber and connected to the rotating shaft, a locking block on the top surface of the rotating shaft, a centrifuge cylinder inside the working chamber, the bottom of the centrifuge cylinder engaging with the locking block, a wall scraping assembly passing through the top surface of the working chamber, the wall scraping assembly extending into the centrifuge cylinder and contacting the inner wall, and a filter assembly on the side of the working chamber, the starting end of the filter assembly being connected to the output shaft of a second drive motor located on the top surface of the working chamber.

2. The centrifugal filtration and dehydration integrated machine according to claim 1, characterized in that, The scraping assembly includes a scraper, the bottom end of which passes through the top surface of the working chamber and extends into the centrifuge tube to contact the inner wall of the centrifuge tube.

3. The centrifugal filtration and dehydration integrated machine according to claim 2, characterized in that, The scraper is provided with a limiting block that contacts the top surface of the work box, and the top of the scraper is provided with a gripping ring.

4. The centrifugal filtration and dehydration integrated machine according to claim 1, characterized in that, The filter assembly includes a receiving cylinder, the bottom of which is provided with a conveying channel communicating with the working box. A spiral conveying rod is provided in the conveying channel. One end of the spiral conveying rod is rotatably connected to the inner side wall of the receiving cylinder, and the other end is connected to the output shaft of the second drive motor through a transmission belt. A filter base plate is provided on the bottom surface of the receiving cylinder.

5. A centrifugal filtration and dehydration integrated machine according to claim 4, characterized in that, The spiral conveyor rod is provided with a guide plate below the inner part of the working box. One side of the guide plate is fixed to the inner side of the working box, and the other end is inclined towards the top surface of the centrifuge cylinder.

6. A centrifugal filtration and dehydration integrated machine according to claim 1, characterized in that, A sliding groove is provided on one side of the bottom surface of the centrifuge tube, and the sliding groove is slidably connected to the locking block. A locking slot is provided in the centrifuge tube, and the locking slot is connected to the sliding groove.

7. A centrifugal filtration and dehydration integrated machine according to claim 6, characterized in that, The locking block is trapezoidal, the sliding groove is a corresponding trapezoidal groove, the centrifuge cylinder is provided with a trapezoidal locking groove in the middle, and the bottom surface of the centrifuge cylinder is provided with a threaded rod, which rotates into the locking groove and contacts the locking block.

8. A centrifugal filtration and dehydration integrated machine according to claim 1, characterized in that, The side of the work box is provided with an opening and closing plate. The top of the opening and closing plate is rotatably connected to the side of the work box, and the bottom is provided with a first buckle. The side of the work box is provided with a second buckle opposite to it. The first buckle and the second buckle are connected by a pin.

9. A centrifugal filtration and dehydration integrated machine according to claim 1, characterized in that, The bottom surface of the work box is provided with multiple through pipes and multiple support feet. The top of the through pipes is connected to the work box, and the first drive motor is located between the multiple support feet.

10. A centrifugal filtration and dehydration integrated machine according to claim 9, characterized in that, The first drive motor is provided with multiple support rods that are correspondingly connected to multiple support feet.

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