A high-efficiency sludge dewatering machine of pair-roller extrusion type

Abstract

The present application relates to the technical field of sludge dewatering, and provides a high-efficiency sludge dewatering machine of roll extrusion, which comprises a first supporting base, a supporting rod and a bottom plate are installed on the first supporting base, a connecting shell is arranged above the supporting rod, a baffle is arranged on the top of the connecting shell, a first conveying assembly and a second conveying assembly are respectively installed on the two sides of the connecting shell, a side plate is installed on the bottom plate, a supporting assembly, a first conveying belt and a third motor are installed on the side plate, an extrusion roller is installed on the third motor, and a first bevel gear is installed on the first conveying assembly. Through the above technical scheme, the problems that the existing sludge dewatering equipment is prone to uneven sludge dewatering through single-side extrusion, cannot perform bidirectional extrusion after single-side extrusion of sludge at a suitable position, and cannot perform multiple extrusions on sludge and recover strip-shaped sludge after dewatering are solved.

Description

Technical Field

[0001] This invention relates to the field of sludge dewatering technology, specifically to a double-roller extrusion type high-efficiency sludge dewatering machine. Background Technology

[0002] With the acceleration of urbanization, the discharge of domestic sewage and industrial wastewater is increasing year by year, and the amount of sludge produced by sewage treatment plants is also increasing accordingly. Sludge contains a large amount of water, usually over 90%, and improper treatment will occupy a lot of land resources and pollute the environment. Therefore, sludge dewatering has become one of the key links in modern sewage treatment, aiming to reduce the volume and water content of sludge to facilitate subsequent treatment, disposal or resource utilization.

[0003] Existing sludge dewatering devices still have some shortcomings. For example, the invention patent with publication number CN102267794B discloses a sludge dewatering machine, including a frame and a support plate connected to it. On both sides of the support plate are a sludge pumping mechanism and a pressure squeezing mechanism. A frame-plate filter press mechanism is set between the pressure squeezing mechanism and the support plate. The filter press mechanism includes a filter press unit, and a filter plate is also set in the filter press unit. An annular sleeve is fitted on the outer peripheral wall of the filter plate. The filter plate and the front pressure plate form a filter press chamber. Filter cloth is arranged on the surface of the filter plate in the filter press chamber. Filtrate drainage holes are opened on the surface of the filter plate. The drainage holes are connected to the drainage path set inside the filter plate and extending to the outside. The filter plate and the rear pressure plate are connected to each other and have a through hole in the middle that is connected to the pipeline of the sludge pumping mechanism. This type of sludge dewatering machine can improve filter press efficiency and facilitate control of sludge cake temperature. However, in use, existing sludge dewatering equipment is prone to uneven sludge dewatering due to unilateral extrusion. It cannot perform bidirectional extrusion after unilateral extrusion of the sludge to the appropriate position, nor can it quickly switch between sludge conveying and closed extrusion. Furthermore, existing dewatering machines cannot extrude the sludge multiple times and recover the dewatered strip-shaped sludge, which is not convenient for subsequent recycling. Summary of the Invention

[0004] This invention proposes a high-efficiency sludge dewatering machine using a double-roller extrusion method, which solves the problems of existing sludge dewatering equipment, which easily leads to uneven sludge dewatering due to single-sided extrusion, cannot perform bidirectional extrusion after extruding the sludge to a suitable position on one side, and cannot perform multiple extrusions on the sludge and recover the strip-shaped sludge after dewatering.

[0005] The technical solution of the present invention is as follows:

[0006] A high-efficiency sludge dewatering machine using a double-roller extrusion method includes a first support base, on which a support rod and a base plate are mounted. A connecting shell is disposed above the support rod, and a baffle is fitted to the top of the connecting shell. A first conveying assembly and a second conveying assembly are respectively mounted on both sides of the connecting shell. A side plate is mounted on the base plate, and a support assembly, a first conveyor belt, and a third motor are mounted on the side plate. An extrusion roller is mounted on the third motor. A first bevel gear is mounted on the first conveying assembly, and a second bevel gear and a third bevel gear are respectively meshed on both sides of the first bevel gear. A first connecting ring is disposed above the third bevel gear, and a second connecting ring is disposed above the second bevel gear. A first rotating rod is connected to the first connecting ring, and a second rotating rod is connected to the second connecting ring. Extrusion conveying assemblies are mounted on both the first and second rotating rods, and connecting assemblies are mounted on both the first and second conveying assemblies.

[0007] In a preferred embodiment of the present invention, the first conveying assembly includes a first connecting cylinder and a first motor fixedly mounted on the connecting shell. The first motor has a first rotating shaft fixedly connected to its output shaft, and a first lifting plate is mounted on the first rotating shaft. The first conveying assembly and the second conveying assembly are symmetrically distributed on both sides of the connecting shell, and the first rotating shaft is connected to the first bevel gear.

[0008] In a preferred embodiment of the present invention, the second conveying assembly includes a second connecting cylinder and a second motor fixedly mounted on the connecting shell, a second rotating shaft fixedly mounted on the output shaft of the second motor, and a second lifting plate mounted on the second rotating shaft.

[0009] In a preferred embodiment of the present invention, a second damping shaft is fixedly connected to the second bevel gear, and the second damping shaft is rotatably connected to the second connecting ring. A first damping shaft is fixedly provided on the third bevel gear, and the first damping shaft is rotatably connected to the first connecting ring. The second bevel gear and the third bevel gear are rotatably connected, and the first damping shaft and the second damping shaft are rotatably connected.

[0010] In a preferred embodiment of the present invention, the extrusion conveying assembly includes an outer frame fixedly mounted on the first rotating rod and the second rotating rod, a rotating plate rotatably mounted inside the outer frame, and a stop bar provided on one side of each of the two outer frames opposite to each other. The first rotating rod and the second rotating rod are fixedly connected to the stop plates at corresponding positions.

[0011] In a preferred embodiment of the present invention, the connecting assembly includes a first connecting plate fixedly connected to the second connecting cylinder. A connecting rope and a first spring are fixedly connected to the first connecting plate. A second connecting plate is fixedly provided on both the connecting rope and the first spring. A sliding cylinder is welded to the second connecting plate. The sliding cylinder is slidably installed on the second connecting cylinder. A first through hole is provided on the sliding cylinder. The connection method between the connecting assembly and the first conveying assembly is the same as the connection method between the connecting assembly and the second conveying assembly.

[0012] In a preferred embodiment of the present invention, the support assembly includes a first overlapping plate abutting against the slide cylinder, a second overlapping plate being disposed above the first overlapping plate, a guide rod being disposed through the first overlapping plate, the guide rod being connected to the outer shell, the outer shell being fixedly connected to the side plate, and a second spring being installed between the outer shell and the first overlapping plate.

[0013] In a preferred embodiment of the present invention, a second through hole is provided on the side plate, and a guide plate is installed on the side plate. The positions of the guide plate and the second through hole correspond to each other. The first support base, the support rod, the connecting shell, the bottom plate, the side plate, the guide plate and the outer shell are fixedly connected to form an integral structure, and the second bevel gear is rotatably connected to the outer shell.

[0014] As a preferred embodiment of the present invention, an inner rod and a steel belt are installed inside the first conveyor belt, and the inner rod and the steel belt are distributed alternately and connected end to end within the first conveyor belt.

[0015] In a preferred embodiment of the present invention, a first serrated plate is fitted between the extrusion roller and the first conveyor belt, a second serrated plate is provided at the bottom of the extrusion roller, an electric heating tube is installed inside the extrusion roller, grooves are provided at equal intervals on the surface of the extrusion roller, the second serrated plate is fitted with the inner wall of the groove, and the first serrated plate and the bottom plate and the second serrated plate are fixedly connected.

[0016] The working principle and beneficial effects of this invention are as follows:

[0017] 1. By configuring a first bevel gear, a second bevel gear, a third bevel gear, a first conveying assembly, and a support assembly, the function of bidirectional sludge compression is achieved. When the first motor drives the first rotating shaft to rotate, it drives the second and third bevel gears to rotate in opposite directions via the first bevel gear. This causes the first and second rotating rods to rotate in opposite directions, and the two compression conveying assemblies inside the connecting shell move in opposite directions. As the compression conveying assemblies move towards the edge of the connecting shell, they compress the sludge towards the edge of the connecting shell. When the sludge moves to the position communicating with the first and second connecting cylinders, it will then... The sludge is conveyed to the outer shell via the first rotating shaft, the first lifting plate, the second rotating shaft, and the second lifting plate. While the sludge is being squeezed by the first overlapping plate, the first and second rotating rods rotate in opposite directions. As a result, the first and second rotating rods push against their respective second overlapping plates, causing the two second overlapping plates to move away from each other. This pushes against the slide cylinder, and the sludge inside the slide cylinder is subjected to a pushing force from one side, while the slide cylinder is subjected to a pushing force from the other side. This allows the device to squeeze the sludge bidirectionally for dewatering, improving the dewatering efficiency of the device and solving the problem of uneven sludge dewatering caused by unilateral squeezing in existing sludge dewatering devices.

[0018] 2. The device is equipped with baffles, extrusion conveying components, a first damping shaft, and a second damping shaft. Utilizing the resistance between the first damping shaft and the first connecting ring, and between the second damping shaft and the second connecting ring, the device can continuously extrude sludge at a certain pressure. When the sludge can no longer be extruded, the first damping shaft will slide within the first connecting ring, and the second damping shaft will slide within the second connecting ring. The baffles ensure a sealing effect at the top of the connecting shell during extrusion. When the first motor drives the first rotating shaft to rotate in the reverse direction, it will cause the two adjacent extrusion conveying components to move closer together. Since the outer frames of the two extrusion conveying components are equipped with baffles on opposite sides, when the two rotating plates approach each other, the plates will rotate to allow the sludge to pass through. When the two rotating plates move away from each other, the plates will rotate in the opposite direction until they abut against the baffles, thus achieving the effects of conveying and sealing the sludge, enhancing the ease of use of the device.

[0019] 3. The device is equipped with a first conveyor belt and extrusion rollers arranged in a stacked manner. The sludge after secondary extrusion is transported to the space between the two extrusion rollers via the first conveyor belt. The two extrusion rollers rotate slowly in opposite directions, and the sludge is dewatered by an electric heating tube. After dewatering, the sludge is pressed into the groove of the extrusion rollers. The groove and the first conveyor belt are cleaned by the first and second sawtooth plates. The dewatered strip-shaped sludge is then discharged via the second conveyor belt. This solves the problem that existing dewatering machines cannot perform multiple extrusions of sludge and recover the dewatered strip-shaped sludge. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of a double-roller extrusion type high-efficiency sludge dewatering machine according to the present invention;

[0022] Figure 2 yes Figure 1 Enlarged schematic diagram of the structure at point A;

[0023] Figure 3 This is a schematic diagram of the disassembled structure of the second damping shaft and the second connecting ring of the present invention;

[0024] Figure 4 This is a schematic diagram of the overall structure of the extrusion conveying assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection structure between the side plate and the outer shell of the present invention;

[0026] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point B;

[0027] Figure 7 This is a schematic diagram of the connection structure between the second rotating shaft and the second lifting plate of the present invention;

[0028] Figure 8 This is a schematic diagram of the connection structure between the first rotating shaft and the first lifting plate of the present invention;

[0029] Figure 9 yes Figure 8 Enlarged schematic diagram of the structure at point C;

[0030] Figure 10 This is a schematic diagram of the connection structure between the side plate and the first conveyor belt of the present invention;

[0031] Figure 11 yes Figure 10 Enlarged schematic diagram of the structure at point D;

[0032] Figure 12 This is a schematic diagram of the contact structure between the extrusion roller and the first serrated plate of the present invention.

[0033] Reference numerals: 1. First support base; 2. Support rod; 3. Connecting shell; 4. Baffle; 5. First conveying assembly; 501. First connecting cylinder; 502. First rotating shaft; 503. First motor; 504. First lifting plate; 6. Second conveying assembly; 601. Second connecting cylinder; 602. Second rotating shaft; 603. Second motor; 604. Second lifting plate; 7. First bevel gear; 8. Second bevel gear; 9. Third bevel gear; 10. First damping shaft; 11. Second damping shaft; 12. First connecting ring; 13. Second connecting ring; 14. First rotating rod; 15. Second rotating rod; 16. Extrusion conveying assembly; 1601. Outer frame; 1602. Rotating plate; 1603. 17. Stop bar; 17. Connecting assembly; 1701. First connecting plate; 1702. Connecting rope; 1703. First spring; 1704. Second connecting plate; 1705. Slide cylinder; 1706. First through hole; 18. Support assembly; 1801. First overlapping plate; 1802. Guide rod; 1803. Outer shell; 1804. Second overlapping plate; 1805. Second spring; 19. Base plate; 20. Side plate; 21. Guide plate; 22. First conveyor belt; 23. Third motor; 24. Extrusion roller; 25. Inner rod; 26. Steel belt; 27. First serrated plate; 28. Groove; 29. ​​Second serrated plate; 30. Electric heating tube; 31. Second through hole; 32. Second conveyor belt. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figures 1-12As shown, this embodiment proposes a high-efficiency sludge dewatering machine of the double-roller extrusion type, including a first support base 1, on which a support rod 2 and a base plate 19 are installed. A connecting shell 3 is provided above the support rod 2, and a baffle 4 is fitted to the top of the connecting shell 3. A first conveying assembly 5 and a second conveying assembly 6 are respectively installed on both sides of the connecting shell 3. The first conveying assembly 5 and the second conveying assembly 6 are used for conveying and extruding sludge. A side plate 20 is installed on the base plate 19. The conveyor assembly 5 is equipped with a support component 18, a first conveyor belt 22, and a third motor 23. A squeeze roller 24 is mounted on the third motor 23. A first bevel gear 7 is mounted on the first conveyor assembly 5. A second bevel gear 8 and a third bevel gear 9 are meshed on both sides of the first bevel gear 7. A first connecting ring 12 is positioned above the third bevel gear 9, and a second connecting ring 13 is positioned above the second bevel gear 8. A first rotating rod 14 is connected to the first connecting ring 12, and a second rotating rod 15 is connected to the second connecting ring 13. A squeeze conveyor assembly 16 is mounted on both the first rotating rod 14 and the second rotating rod 15. Connecting components 17 are mounted on both the first conveyor assembly 5 and the second conveyor assembly 6. When the first conveyor assembly 5 operates, it drives the first bevel gear 7 to rotate. Figure 3 As shown, the first bevel gear 7 drives the second bevel gear 8 and the third bevel gear 9 to rotate in opposite directions, which in turn causes the first connecting ring 12 and the second connecting ring 13 to rotate in opposite directions. This causes the first rotating rod 14 and the second rotating rod 15 to drive the two extrusion conveying components 16 to move in opposite directions. When the first rotating rod 14 and the second rotating rod 15 move to the appropriate position, they can abut against the support component 18 to achieve reverse extrusion dewatering of the sludge. This enables the device to extrude and dewater the sludge in both directions, enhancing the dewatering effect of the device. The dewatered sludge is then conveyed to the position of the extrusion roller 24 via the first conveyor belt 22, where the sludge is dewatered again and extruded into strips.

[0037] Example 2

[0038] like Figures 1-12 As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes a double-roller extrusion type high-efficiency sludge dewatering machine.

[0039] In this embodiment, the first conveying component 5 includes a first connecting cylinder 501 and a first motor 503 fixedly installed on the connecting shell 3. The output shaft of the first motor 503 is fixedly connected to a first rotating shaft 502, and a first lifting plate 504 is installed on the first rotating shaft 502. The first conveying component 5 and the second conveying component 6 are symmetrically distributed on both sides of the connecting shell 3. The first rotating shaft 502 is connected to a first bevel gear 7. The first rotating shaft 502 is driven to rotate by the first motor 503. The first rotating shaft 502 will drive the first bevel gear 7 and the first lifting plate 504 to rotate. The first lifting plate 504 conveys the sludge to the extrusion and dewatering area so that the function of bidirectional extrusion of sludge can be realized by a single drive device.

[0040] In this embodiment, the second conveying component 6 includes a second connecting cylinder 601 and a second motor 603 fixedly installed on the connecting shell 3. A second rotating shaft 602 is fixedly installed on the output shaft of the second motor 603, and a second lifting plate 604 is installed on the second rotating shaft 602. The second motor 603 is used to drive the second rotating shaft 602 and the second lifting plate 604 to rotate, thereby conveying the sludge in the connecting shell 3 into the second connecting cylinder 601.

[0041] In this embodiment, a second damping shaft 11 is fixedly connected to the second bevel gear 8, and the second damping shaft 11 is damped and rotatably connected to the second connecting ring 13. A first damping shaft 10 is fixedly installed on the third bevel gear 9, and the first damping shaft 10 is damped and rotatably connected to the first connecting ring 12. The second bevel gear 8 and the third bevel gear 9 are rotatably connected, and the first damping shaft 10 and the second damping shaft 11 are rotatably connected. The first damping shaft 10 and the second damping shaft 11 are respectively used to drive the first connecting ring 12 and the second connecting ring 13 to rotate. When the rotational resistance of the first connecting ring 12 and the second connecting ring 13 is too large, the first damping shaft 10 and the second damping shaft 11 slide, thereby maintaining a certain pressure when squeezing sludge.

[0042] In this embodiment, the extrusion conveying assembly 16 includes an outer frame 1601 fixedly mounted on the first rotating rod 14 and the second rotating rod 15. A rotating plate 1602 is rotatably mounted inside the outer frame 1601. A stop bar 1603 is provided on each opposite side of the two outer frames 1601. The first rotating rod 14 and the second rotating rod 15 are fixedly connected to the corresponding stop plates 4. When the two outer frames 1601 move away from each other, the stop bar 1603 will abut against the rotating plate 1602. Figure 4 and Figure 7 As can be seen, this forms a closed area to compress the sludge. When the two outer frames 1601 approach each other, the baffle 1603 no longer blocks the rotating plate 1602 and pushes the sludge, thereby causing the rotating plate 1602 to rotate and transport the sludge into the connecting shell 3.

[0043] In this embodiment, the connecting component 17 includes a first connecting plate 1701 fixedly connected to the second connecting cylinder 601. A connecting rope 1702 and a first spring 1703 are fixedly connected to the first connecting plate 1701. A second connecting plate 1704 is fixedly provided on both the connecting rope 1702 and the first spring 1703. A sliding cylinder 1705 is welded to the second connecting plate 1704. The sliding cylinder 1705 is slidably installed on the second connecting cylinder 601. A first through hole 1706 is provided on the sliding cylinder 1705. The connection method between the connecting component 17 and the first conveying component 5 is the same as the connection method between the connecting component 17 and the second conveying component 6. The connecting rope 1702 is used to limit the sliding distance of the sliding cylinder 1705 to the outside of the second connecting cylinder 601. The first spring 1703 enables the sliding cylinder 1705 to be reset after being pushed into the second connecting cylinder 601, thereby ensuring the bidirectional extrusion effect of sludge. When the sludge is extruded from inside the device to the outside, the liquid will be discharged outward through the first through hole 1706.

[0044] In this embodiment, the support assembly 18 includes a first overlapping plate 1801 abutting against the slide cylinder 1705, a second overlapping plate 1804 disposed above the first overlapping plate 1801, a guide rod 1802 passing through the first overlapping plate 1801, the guide rod 1802 being connected to the outer shell 1803, the outer shell 1803 being fixedly connected to the side plate 20, and a second spring 1805 installed between the outer shell 1803 and the first overlapping plate 1801. After the sludge is dewatered to a certain extent, it will push the first overlapping plate 1801, and the first overlapping plate 1801 will slide through the guide rod 1802, compressing the second spring 1805 on the outer shell 1803, so that the sludge can be discharged to the outside of the device.

[0045] In this embodiment, a second through hole 31 is provided on the side plate 20, and a guide plate 21 is installed on the side plate 20. The positions of the guide plate 21 and the second through hole 31 correspond to each other. The first support base 1, support rod 2, connecting shell 3, bottom plate 19, side plate 20, guide plate 21 and outer shell 1803 are fixedly connected to form an integral structure. The second bevel gear 8 is rotatably connected to the outer shell 1803. When the sludge is graded and treated, the sludge will accumulate below the second through hole 31, so that the liquid is discharged to the outside of the device through the second through hole 31 and the guide plate 21.

[0046] In this embodiment, an inner rod 25 and a steel belt 26 are installed inside the first conveyor belt 22. The inner rod 25 and the steel belt 26 are distributed alternately and connected end to end within the first conveyor belt 22. The first conveyor belt 22 is used to transport sludge to the lower area for further dewatering. The inner rod 25 and the steel belt 26 are used to ensure the overall strength of the first conveyor belt 22 and enhance the durability of the device.

[0047] In this embodiment, a first serrated plate 27 is fitted between the extrusion roller 24 and the first conveyor belt 22. A second serrated plate 29 is provided at the bottom of the extrusion roller 24. An electric heating tube 30 is installed inside the extrusion roller 24. Grooves 28 are provided at equal intervals on the surface of the extrusion roller 24. The second serrated plate 29 is fitted with the inner wall of the groove 28. The first serrated plate 27 and the bottom plate 19 and the second serrated plate 29 and the bottom plate 19 are fixedly connected. The electric heating tube 30 is used to cooperate with the two extrusion rollers 24 to perform extrusion dewatering. During dewatering, sludge will remain in the groove 28. The inner wall of the groove 28 of the extrusion roller 24 can be cleaned by the second serrated plate 29, thereby scraping off the strip-shaped sludge after dewatering. The top of the first serrated plate 27 is used to clean the first conveyor belt 22.

[0048] Specifically, this invention is a high-efficiency sludge dewatering machine using a double-roller extrusion method. First, as... Figure 1 , Figures 3-7 As shown, the first support base 1, support rod 2, and base plate 19 support the entire device, feeding sludge from between the first rotating rod 14 and the second rotating rod 15 into the connecting shell 3. At this time, the sludge is located between the two extrusion conveying assemblies 16, as shown. Figure 1 and Figure 7 As shown, when the first motor 503 drives the first rotating shaft 502 to rotate, the first rotating shaft 502 will drive the first bevel gear 7 to rotate. The first bevel gear 7 drives the second bevel gear 8 and the third bevel gear 9 to rotate in opposite directions, thereby causing the first rotating rod 14 and the second rotating rod 15 to rotate in opposite directions. The two extrusion conveying assemblies 16 inside the connecting shell 3 move in opposite directions. When the extrusion conveying assembly 16 moves towards the edge of the connecting shell 3, it will extrude the sludge towards the edge of the connecting shell 3. Figure 4 and Figure 7 As can be seen, the two outer frames 1601 are far apart, and the baffle 1603 abuts against the rotating plate 1602, thereby forming a closed area to squeeze the sludge through the connecting shell 3 and the baffle 4, completing a single squeeze. When the first rotating shaft 502 rotates in the opposite direction, the two outer frames 1601 move closer to each other, the baffle 1603 no longer blocks the rotating plate 1602, the rotating plate 1602 rotates on the outer frame 1601, and the rotating plate 1602 no longer pushes the sludge. The sludge is transported into the connecting shell 3. When the two squeezing and conveying components 16 move to... Figure 1 When in position, push the extrusion conveying assembly 16 to both sides of the connecting shell 3 again. Since the second damping shaft 11 is damped and rotatedly connected to the second connecting ring 13, and the first damping shaft 10 is damped and rotatedly connected to the first connecting ring 12, when the rotational resistance of the first connecting ring 12 and the second connecting ring 13 is too great and cannot rotate and extrude sludge further, the first damping shaft 10 and the second damping shaft 11 will slide within the first connecting ring 12 and the second connecting ring 13, thereby maintaining sufficient pressure when extruding sludge.

[0049] like Figure 1 , Figure 2and Figures 7-10 As shown, after the sludge moves to the position communicating with the first connecting cylinder 501 and the second connecting cylinder 601, the first rotating shaft 502 drives the first bevel gear 7 and the first lifting plate 504 to rotate. The first lifting plate 504 transports the sludge through the first connecting cylinder 501 to the extrusion and dewatering area. The second motor 603 drives the second rotating shaft 602 and the second lifting plate 604 to rotate, thereby transporting the sludge in the connecting shell 3 into the second connecting cylinder 601. The sludge extrudes the first overlapping plate 1801. At this time, since the first rotating rod 14 and the second rotating rod 15 rotate in opposite directions, the first rotating rod 14 and the second rotating rod 15 will push the corresponding second overlapping plate 1804 respectively. The two second overlapping plates 1804 move away from each other, and the second overlapping plates 1804 push the slide cylinder 1705. The slide cylinder 1705 slides into the first connecting cylinder 501 or the second connecting cylinder 601, thereby bidirectionally extruding the sludge. The liquid in the sludge will be discharged outward through the first through hole 1706. The connecting rope 1702 is used to limit the sliding distance of the slide cylinder 1705 to the outside of the second connecting cylinder 601. The first spring 1703 allows the slide cylinder 1705 to return to its original position after being pushed inward into the second connecting cylinder 601. After the sludge is dewatered to a certain extent, it will push against the first overlapping plate 1801. The first overlapping plate 1801 slides through the guide rod 1802, and the second spring 1805 on the outer shell 1803 is compressed, allowing the dewatered sludge to be discharged to the outside of the device. The sludge after bidirectional extrusion is conveyed to the space between the two extrusion rollers 24 via the first conveyor belt 22. The two extrusion rollers 24 are driven to rotate slowly in opposite directions by the third motor 23. The electric heating tube 30 heats the extrusion rollers 24, thereby dewatering the sludge again. After dewatering, the sludge is pressed into the groove 28 of the extrusion roller 24. The inner wall of the groove 28 of the extrusion roller 24 is cleaned by the second serrated plate 29, thereby scraping off the strip-shaped sludge after dewatering. The top of the first serrated plate 27 is used to clean the first conveyor belt 22. The inner rod 25 and steel belt 26 embedded in the first conveyor belt 22 can maintain the strength of the first conveyor belt 22 when cleaning it. The strip-shaped sludge after dewatering is discharged through the second conveyor belt 32.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency sludge dewatering machine of the double-roller extrusion type, comprising a first support base, characterized in that: A support rod and a base plate are installed on the first support base. A connecting shell is set above the support rod. A baffle is attached to the top of the connecting shell. A first conveying assembly and a second conveying assembly are respectively installed on both sides of the connecting shell. A side plate is installed on the base plate. A support assembly, a first conveyor belt and a third motor are installed on the side plate. An extrusion roller is installed on the third motor. A first bevel gear is installed on the first conveying assembly. A second bevel gear and a third bevel gear are respectively meshed on both sides of the first bevel gear. A first connecting ring is set above the third bevel gear. A second connecting ring is set above the second bevel gear. A first rotating rod is connected to the first connecting ring. A second rotating rod is connected to the second connecting ring. An extrusion conveying assembly is installed on both the first rotating rod and the second rotating rod. A connecting assembly is installed on both the first conveying assembly and the second conveying assembly. The first conveying assembly includes a first connecting cylinder and a first motor fixedly mounted on the connecting shell. The first motor has a first rotating shaft fixedly connected to its output shaft, and a first lifting plate is mounted on the first rotating shaft. The first conveying assembly and the second conveying assembly are symmetrically distributed on both sides of the connecting shell, and the first rotating shaft is connected to the first bevel gear. The second conveying assembly includes a second connecting cylinder and a second motor fixedly mounted on the connecting shell. A second rotating shaft is fixedly mounted on the output shaft of the second motor, and a second lifting plate is mounted on the second rotating shaft. A second damping shaft is fixedly connected to the second bevel gear, and the second damping shaft is rotatably connected to the second connecting ring. A first damping shaft is fixedly installed on the third bevel gear, and the first damping shaft is rotatably connected to the first connecting ring. The second bevel gear and the third bevel gear are rotatably connected, and the first damping shaft and the second damping shaft are rotatably connected. The connecting assembly includes a first connecting plate fixedly connected to the second connecting cylinder. A connecting rope and a first spring are fixedly connected to the first connecting plate. A second connecting plate is fixedly installed on both the connecting rope and the first spring. A sliding cylinder is welded to the second connecting plate. The sliding cylinder is slidably installed on the second connecting cylinder. A first through hole is opened on the sliding cylinder. The connection method between the connecting assembly and the first conveying assembly and the connection method between the connecting assembly and the second conveying assembly are the same. The support assembly includes a first overlapping plate that abuts against the slide cylinder, a second overlapping plate that is disposed above the first overlapping plate, a guide rod that passes through the first overlapping plate and is connected to the outer shell, the outer shell and the side plate being fixedly connected, and a second spring that is installed between the outer shell and the first overlapping plate.

2. The high-efficiency sludge dewatering machine of double-roller extrusion type according to claim 1, characterized in that, The extrusion conveying assembly includes an outer frame fixedly mounted on a first rotating rod and a second rotating rod. A rotating plate is rotatably mounted inside the outer frame. A stop bar is provided on one side of each of the two outer frames opposite to each other. The first rotating rod and the second rotating rod are fixedly connected to the stop plates at the corresponding positions.

3. The high-efficiency sludge dewatering machine of roller extrusion type according to claim 2, characterized in that, A second through hole is provided on the side plate, and a guide plate is installed on the side plate. The positions of the guide plate and the second through hole correspond to each other. The first support base, support rod, connecting shell, bottom plate, side plate, guide plate and outer shell are fixedly connected as an integral structure. The second bevel gear is rotatably connected to the outer shell.

4. The high-efficiency sludge dewatering machine of double-roller extrusion type according to claim 1, characterized in that, The first conveyor belt is equipped with inner rods and steel belts, which are distributed alternately and connected end to end within the first conveyor belt.

5. A high-efficiency sludge dewatering machine of double-roller extrusion type according to claim 1, characterized in that, A first serrated plate is fitted between the extrusion roller and the first conveyor belt. A second serrated plate is provided at the bottom of the extrusion roller. An electric heating tube is installed inside the extrusion roller. Grooves are provided at equal intervals on the surface of the extrusion roller. The second serrated plate is fitted with the inner wall of the groove. The first serrated plate and the bottom plate and the second serrated plate and the bottom plate are fixedly connected.

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