Sludge Dewatering Device and Dewatering Method

Abstract

The present invention discloses a sludge dewatering device and a dewatering method. The sludge dewatering device includes a box body and a dewatering barrel body. A cover body is provided at the top of the box body. A compression assembly is installed at the bottom of the cover body. The top of the dewatering barrel body is open. A plurality of dewatering holes are formed in the side wall of the dewatering barrel body. A rotating table is installed at the bottom of the dewatering barrel body. The bottom of the rotating table rotates through the box body through a sealed bearing and is connected to a second motor. The sludge dewatering device has a simple structure and is convenient to operate. While the dewatering barrel body rotates to dewater the sludge, the moving plate moves to compress the sludge, effectively improving the dewatering effect. Based on the dewatering method of the above sludge dewatering device, different compression processes can be carried out according to the sludge with different water contents, improving the dewatering efficiency and having strong adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment. More specifically, the present invention relates to a sludge dewatering device and a dewatering method. Background Art

[0002] Current sludge refers to fine-grained soil deposited in still water and slow-flowing water environments and containing organic matter, with its natural water content greater than the liquid limit. Sludge is deposited in still water or slow-flowing water environments and formed through physical, chemical, and biochemical actions. It is unconsolidated soft fine-grained or extremely fine-grained soil with complex compositions. After reasonable treatment, it can be effectively utilized. In the existing sludge dewatering work, basically, the sludge is pumped out and directly enters the dewatering equipment for dewatering, such as the sludge bucket of a sludge dewatering device disclosed in CN212076799U. However, it is found in actual use that the water content of sludge in different waters varies greatly, and the existing sludge dewatering machines cannot effectively adapt. Summary of the Invention

[0003] An object of the present invention is to provide a sludge dewatering device and a dewatering method, which can effectively improve the sludge dewatering effect and efficiency, and are applicable to sludge in different waters with strong adaptability.

[0004] To achieve these and other advantages in accordance with the present invention, in one aspect of the present invention, there is provided a sludge dewatering device, which includes:

[0005] A box body, with a cover body provided at its top. A compression assembly is installed at the bottom of the cover body. The compression assembly is provided with a rotating rod, and a top plate is sleeved at the top end thereof by a bearing. A plurality of connecting rods extending towards the bottom of the box body are provided along the circumferential edge of the bottom of the top plate. The bottom of each of the plurality of connecting rods is connected to a bottom plate through a first telescopic cylinder. An external thread is provided on the outer wall of the rotating rod, and a moving plate is sleeved on its outer circumference. A threaded hole matching the external thread is opened at the axis of the moving plate. A plurality of through holes are also opened along the circumferential edge of the moving plate, so that the plurality of connecting rods correspond to and slide through them one by one. The top of the rotating rod passes through the cover body through a bearing and is connected to a first motor. A liquid discharge port is provided at the bottom of the box body;

[0006] A dewatering barrel body, with an opening at its top. A plurality of dewatering holes are opened on the side wall of the dewatering barrel body. A rotating table is installed at the bottom of the dewatering barrel body. The bottom of the rotating table rotates through a sealed bearing and passes through the box body and is connected to a second motor.

[0007] Preferably, the top plate, the bottom plate, and the moving plate are parallel to each other, and the rotating rod is coaxially arranged with the top plate, the bottom plate, and the moving plate.

[0008] Preferably, the top plate, the bottom plate, and the moving plate have the same diameter, and are slightly smaller than the inner diameter of the dewatering barrel body.

[0009] Preferably, a positioning ring is provided at the top axis of the chassis. The inner diameter of the positioning ring is larger than the diameter of the rotating rod. A hemispherical receiving groove is formed at the bottom of the rotating rod. A rolling ball is rotatably received in the receiving groove, and the opening diameter of the receiving groove is smaller than the diameter of the rolling ball.

[0010] Preferably, an annular sliding rail is formed at the bottom of the chassis. The cross-section of the sliding rail is a hemispherical structure. A plurality of rolling balls are rotatably received therein, and the opening width of the sliding rail is smaller than the diameter of each rolling ball.

[0011] Preferably, two first protrusions are symmetrically installed on the outer side wall of the cover body, and two second protrusions are symmetrically installed on the outer side wall of the box body. Second telescopic cylinders are vertically installed between the corresponding first protrusions and second protrusions.

[0012] The present invention also provides a dehydration method for the sludge dehydration device, which includes the following steps:

[0013] Step 1: Activate a plurality of first telescopic cylinders and second telescopic cylinders to extend them, driving the cover body to open, and rising together with the rotating rod, the top plate and the moving plate. At this time, the moving plate is close to the top plate, the chassis is located at the inner bottom end of the dehydration barrel body, and a plurality of rolling balls are in contact with the inner bottom end of the dehydration barrel body. Pour the sludge to be treated into the dehydration barrel body.

[0014] Step 2: Activate a plurality of first telescopic cylinders and second telescopic cylinders to shorten them, driving the cover body to close, and descending together with the rotating rod, the top plate and the moving plate, so that the bottom of the rotating rod is clamped into the positioning ring, and the rolling ball is in contact with the top of the chassis.

[0015] When the water content of the sludge is low, activate the second motor to drive the dehydration barrel body to rotate to dehydrate the sludge. At the same time, activate the first motor to drive the rotating rod to rotate forward, driving the moving plate to descend to compress the sludge downward.

[0016] When the water content of the sludge is high, activate the second motor to drive the dehydration barrel body to rotate to dehydrate the sludge. At the same time, activate the first motor to drive the rotating rod to rotate forward or backward, driving the moving plate to repeatedly perform descending and rising actions, making it repeatedly approach or move away from the chassis, and compressing the sludge downward multiple times.

[0017] Step 3: Activate two second telescopic cylinders to extend them, driving the cover body to open, and rising together with the rotating rod, the top plate, the moving plate, the chassis, and the dehydrated and compressed sludge. The two second telescopic cylinders are inclined, so that the compression assembly deviates out of the box body, remove the dehydrated and compressed sludge, and drain the liquid through the drain port to complete the sludge dehydration work.

[0018] The present invention has at least the following beneficial effects: The sludge dewatering device of the present invention is provided with a dewatering barrel body, which uses centrifugal force to dehydrate the sludge, and then uses the rotation of the rotating rod to drive the moving disk to move, compressing the sludge. Compression and dehydration are carried out simultaneously, improving the dehydration efficiency; The dehydration method can be adjusted according to sludges with different water contents, effectively improving the dehydration effect and having strong applicability.

[0019] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A plan view of a technical solution of the present invention;

[0021] Figure 2 A three-dimensional structural view of the compression assembly in a technical solution of the present invention;

[0022] Figure 3 A three-dimensional structural view of the dewatering barrel body and the compression assembly in a technical solution of the present invention;

[0023] Figure 4 A plan view when the cover body of a technical solution of the present invention is opened;

[0024] Figure 5 A plan view when the cover body of another technical solution of the present invention is opened. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following further detailed description of the present invention is made in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can implement it according to the description in the specification.

[0026] It should be understood that terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0027] It should be noted that, unless otherwise specified, the experimental methods described in the following implementation schemes are all conventional methods, and the reagents and materials, unless otherwise specified, can all be obtained through commercial channels; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, they can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] As Figures 1 to 5 shown, the present invention provides a sludge dewatering device, which includes:

[0029] A box body 100, with a cover body 101 provided at its top. A compression assembly is installed at the bottom of the cover body 101. The compression assembly is provided with a rotating rod 102, and a top plate 103 is sleeved at the top end thereof through a bearing. A plurality of connecting rods 104 extending towards the bottom of the box body 100 are provided along the circumference of the bottom of the top plate 103. The bottoms of the plurality of connecting rods 104 are all connected to a bottom plate 105 through a first telescopic cylinder. An external thread is provided on the outer wall of the rotating rod 102, and a moving plate 106 is sleeved on its outer circumference. A threaded hole matching the external thread is opened at the axis of the moving plate 106. A plurality of through holes are also opened along the circumference of the moving plate 106, so that the plurality of connecting rods 104 correspond to and slide through it one by one. The top of the rotating rod 102 passes through the cover body 101 through a bearing and is connected to a first motor 107. A liquid discharge port 108 is provided at the bottom of the box body 100;

[0030] A dewatering barrel body 200, with an open top. A plurality of dewatering holes 201 are opened on the side wall of the dewatering barrel body 200. A rotating table 202 is installed at the bottom of the dewatering barrel body 200. The bottom of the rotating table 202 rotates out of the box body 100 through a sealed bearing and is connected to a second motor 203.

[0031] In this technical solution, the sludge dewatering device includes a box body 100, a compression assembly and a dewatering barrel body 200 are arranged inside the box body 100, and a cover body 101 is arranged at the top of the box body 100; the compression assembly includes a rotating rod 102, a plurality of connecting rods 104, a top plate 103, a moving plate 106 and a bottom plate 105. The top plate 103, the moving plate 106 and the bottom plate 105 are stacked parallel to each other from top to bottom. The tops of the plurality of connecting rods 104 are fixedly connected to the bottom of the top plate 103, the bottoms of the connecting rods 104 are fixedly connected to the output ends of the first telescopic cylinders, the non-output ends of the first telescopic cylinders are fixedly connected to the top of the bottom plate 105, and the first telescopic cylinders and the outer diameters of the connecting rods 104 are the same. The moving plate 106 is slidably sleeved on the outer circumferences of the plurality of connecting rods 104 and can freely slide on the outer circumferences of the connecting rods 104 and the first telescopic cylinders; a threaded hole is opened at the center of the moving plate 106. The top of the rotating rod 102 rotates through the cover body 101 and is connected to the first motor 107. The bottom of the rotating rod 102 sequentially passes through the threaded holes of the top plate 103 and the moving plate 106. The top plate 103 is rotatably connected to the rotating rod 102 through a bearing. External threads are arranged on the outer circumference of the rotating rod 102 and are rotationally connected to the threaded hole in a matching manner. The bottom of the rotating rod 102 abuts against the top of the bottom plate 105, and the two are not connected; the upper end of the dewatering barrel body 200 is open, and the lower end is fixedly connected to the top of the rotating table 202. The bottom of the rotating table 202 rotates through the bottom of the box body 100 through a sealed bearing and is connected to the second motor 203; in addition, a liquid discharge port 108 is arranged at the bottom of the box body 100. The structure of this technical solution is reasonably designed and easy to operate. Driven by the second motor 203, the dewatering barrel body 200 can spin-dry the sludge. At the same time, the first motor 107 drives the rotating rod 102 to rotate, driving the moving plate 106 to move, compressing the sludge, improving the dewatering effect and working efficiency; the compression assembly is located inside the dewatering barrel body 200, and the two do not interfere with each other, avoiding affecting the rotation of the dewatering barrel body 200; through the pitch of the threaded hole and the external thread, the moving speed of the moving plate 106 can be adjusted according to the water content of different sludges, and then the compression speed can be adjusted to improve the applicability of the device.

[0032] In another technical solution, the top plate 103, the bottom plate 105 and the moving plate 106 are parallel to each other, and the rotating rod 102 is coaxially arranged with the top plate 103, the bottom plate 105 and the moving plate 106. In this technical solution, the top plate 103, the moving plate 106 and the bottom plate 105 are coaxial and of the same size, which is convenient for the smooth movement of the moving plate 106.

[0033] In another technical solution, the top plate 103, the bottom plate 105, and the moving plate 106 have the same diameter and are slightly smaller than the inner diameter of the dehydration barrel body 200. In this technical solution, the top plate 103, the moving plate 106, and the bottom plate 105 are arranged in sequence from top to bottom and are accommodated inside the dehydration barrel body 200, which is convenient for compressing the sludge while dehydrating, thereby improving the dehydration efficiency.

[0034] In another technical solution, a positioning ring 119 is provided at the axial center of the top of the bottom plate 105. The inner diameter of the positioning ring 119 is larger than the diameter of the rotating rod 102. A hemispherical receiving groove is formed at the bottom of the rotating rod 102. A rolling ball is rotatably accommodated in the receiving groove, and the opening diameter of the receiving groove is smaller than the diameter of the rolling ball. In this technical solution, the setting of the positioning ring 119 facilitates receiving the bottom of the rotating rod 102, and the rolling ball abuts against the top of the bottom plate 105, ensuring the smooth rotation of the rotating rod 102.

[0035] In another technical solution, an annular sliding rail is formed at the bottom of the bottom plate 105. The cross-section of the sliding rail is a hemispherical structure, and a plurality of rolling balls are rotatably accommodated inside it. The opening width of the sliding rail is smaller than the diameter of each rolling ball. In this technical solution, a plurality of rolling balls are provided at the bottom of the bottom plate 105 to abut against the dehydration barrel body 200, which supports the bottom plate 105 while ensuring the smooth rotation of the dehydration barrel body 200.

[0036] In another technical solution, two first protrusions 110 are symmetrically installed on the outer side wall of the cover body 101, and two second protrusions 111 are symmetrically installed on the outer side wall of the box body 100. Second telescopic cylinders 112 are vertically installed between the corresponding first protrusion 110 and second protrusion 111. In this technical solution, when the two second telescopic cylinders 112 extend, the cover body 101 can be lifted to realize the electric lifting function. The two ends of the second telescopic cylinder 112 are respectively hinged to the first protrusion 110 and the second protrusion 111 to deflect the cover body 101. When the second telescopic cylinder 112 is inclined, the compression assembly can be offset out of the box body 100, which is convenient for taking out the dehydrated and compressed sludge, making the operation of the device simpler.

[0037] The present invention also provides a dehydration method for the sludge dehydration device, which includes the following steps:

[0038] Step 1: Turn on a plurality of first telescopic cylinders and the second telescopic cylinder 112 to make them extend, drive the cover body 101 to open, and lift the rotating rod 102, the top plate 103, and the moving plate 106 together. At this time, the moving plate approaches the top plate, the bottom plate 105 is located at the inner bottom end of the dehydration barrel body 200, and a plurality of rolling balls abut against the inner bottom end of the dehydration barrel body 200, and pour the sludge to be processed into the dehydration barrel body 200;

[0039] Step 2: Start multiple first telescopic cylinders and second telescopic cylinders 112 to shorten them, drive the cover body 101 to close, and drive the rotary rod 102, the top plate 103, and the moving plate 106 to descend together, so that the bottom of the rotary rod 102 is stuck and embedded in the positioning ring 119, and the rolling ball abuts against the top of the chassis 105;

[0040] When the water content of the sludge is low, start the second motor to drive the dehydration barrel body to rotate to dehydrate the sludge. At the same time, start the first motor to drive the rotary rod to rotate forward, drive the moving plate to descend, and compress the sludge downward;

[0041] When the water content of the sludge is high, start the second motor to drive the dehydration barrel body to rotate to dehydrate the sludge. At the same time, start the first motor to drive the rotary rod to rotate forward or backward, drive the moving plate to repeat the descending and ascending actions, make it repeatedly approach or move away from the chassis, and compress the sludge downward multiple times;

[0042] Step 3: Start two second telescopic cylinders 112 to extend them, drive the cover body 101 to open, and drive the rotary rod 102, the top plate 103, the moving plate 106, the chassis 105, and the dehydrated and compressed sludge to rise together. The two second telescopic cylinders 112 are inclined to make the compression assembly shift out of the box body 100, remove the dehydrated and compressed sludge, and discharge the liquid through the liquid discharge port 108 to complete the sludge dehydration work.

[0043] In this technical solution, when the water content of the sludge is high, the first motor drives the rotary rod 102 to rotate forward, so that the moving plate gradually approaches the chassis. Then, use the first motor to drive the rotary rod 102 to rotate backward, and the moving plate moves upward and gradually moves away from the chassis. Repeat the above actions to make the moving plate move downward again, compress the sludge repeatedly, and while the dehydration barrel body 200 uses centrifugal force to spin-dry the sludge, the moving plate 106 repeatedly squeezes the sludge downward to improve the dehydration efficiency; when the water content of the sludge is low, the rotary rod 102 only needs to move forward to compress the sludge once, saving energy; in addition, when the water content of the sludge is low, the moving plate 106 can also be made to approach the chassis 105. Pour the sludge to be treated above the moving plate 106, and rotate the rotary rod 102 in the reverse direction. While the dehydration barrel body 200 uses centrifugal force to spin-dry the sludge, the moving plate 106 drives the sludge to move upward to compress the sludge, and due to the action of gravity, the dehydration rate will be further increased; the dehydration method described in this technical solution is applicable to the dehydration work of sludge with different water contents. According to the water content of the sludge to be treated, by controlling the rotation speeds of the turntable and the rotary rod, the rotation speed of the dehydration barrel body and the moving speed of the moving plate can be adjusted and controlled to further improve the dehydration efficiency and dehydration effect, with strong flexibility.

[0044] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. Sludge dewatering device, characterized in that, Comprising: A box body, in which a compression component and a dewatering barrel body are arranged. A cover body is arranged on the top of the box body. Two first protrusions are symmetrically installed on the outer side wall of the cover body. Two second protrusions are symmetrically installed on the outer side wall of the box body. A second telescopic cylinder is vertically installed between the corresponding first protrusion and the second protrusion. A compression component is installed at the bottom of the cover body. The compression component is provided with a rotating rod, and a top plate is sleeved at the top of the rotating rod through a bearing. A plurality of connecting rods extending towards the bottom of the box body are arranged along the circumferential edge of the bottom of the top plate. The bottoms of the plurality of connecting rods are all connected to a bottom plate through a first telescopic cylinder. The bottom of the rotating rod abuts against the top of the bottom plate, and the two are not connected. An external thread is arranged on the outer wall of the rotating rod, and a moving plate is sleeved on the outer circumference thereof. A threaded hole matching the external thread is opened at the axis of the moving plate. A plurality of through holes are also opened along the circumferential edge of the moving plate, so that the plurality of connecting rods correspond to and slide through the moving plate one by one. The top of the rotating rod passes through the cover body through a bearing and is connected to a first motor. A liquid discharge port is arranged at the bottom of the box body; The dewatering barrel body has an open top. A plurality of dewatering holes are opened on the side wall of the dewatering barrel body. A rotating table is installed at the bottom of the dewatering barrel body. The bottom of the rotating table rotates out of the box body through a sealed bearing and is connected to a second motor. The compression component is located inside the dewatering barrel body, and the two do not interfere with each other. The bottom plate is located at the inner bottom end of the dewatering barrel body.

2. The sludge dewatering device according to claim 1, wherein, The top plate, the bottom plate and the moving plate are parallel to each other, and the rotating rod is coaxially arranged with the top plate, the bottom plate and the moving plate.

3. The sludge dewatering device according to claim 1, characterized in that, The top plate, the bottom plate and the moving plate have the same diameter, and are slightly smaller than the inner diameter of the dewatering barrel body.

4. The sludge dewatering device according to claim 1, wherein A positioning ring is arranged at the axis of the top of the bottom plate. The inner diameter of the positioning ring is larger than the diameter of the rotating rod. A hemispherical receiving groove is opened at the bottom of the rotating rod. A rolling ball is rotatably received in the receiving groove, and the opening diameter of the receiving groove is smaller than the diameter of the rolling ball.

5. The sludge dewatering device according to claim 1, wherein, An annular sliding rail is opened at the bottom of the bottom plate. The cross section of the sliding rail is a hemispherical structure. A plurality of rolling balls are rotatably received inside it, and the opening width of the sliding rail is smaller than the diameter of each rolling ball.

6. The sludge dewatering device according to claim 1, wherein, Both ends of the second telescopic cylinder are hinged to the first protrusion and the second protrusion respectively.

7. A dehydration method based on the sludge dehydration device according to any one of claims 1 to 6, characterized in that, Including the following steps: Step 1: Turn on a plurality of first telescopic cylinders and second telescopic cylinders to make them extend, drive the cover body to open, and drive the rotating rod, the top plate and the moving plate to rise together. At this time, the moving plate is close to the top plate. The bottom plate is located at the inner bottom end of the dewatering barrel body, and a plurality of rolling balls abut against the inner bottom end of the dewatering barrel body. Pour the sludge to be processed into the dewatering barrel body; Step 2: Start a plurality of first telescopic cylinders and second telescopic cylinders to make them shorten, drive the cover body to close, and drive the rotating rod, the top plate and the moving plate to descend together, so that the bottom of the rotating rod is stuck in the positioning ring, and the rolling ball abuts against the top of the bottom plate; When the water content of the sludge is low, turn on the second motor to drive the dewatering barrel body to rotate to dehydrate the sludge. At the same time, turn on the first motor to drive the rotating rod to rotate forward, drive the moving plate to descend, and compress the sludge downward; When the water content of the sludge is high, the second motor is turned on to drive the dewatering barrel to rotate, dewater the sludge. At the same time, the first motor is turned on to drive the rotating rod to rotate forward or backward, driving the moving plate to repeatedly perform the descending and ascending actions, so that it repeatedly approaches or moves away from the chassis, and squeezes and compresses the sludge downward multiple times; Step 3: Start two second telescopic cylinders to make them extend, drive the cover body to open, and rise together with the rotating rod, the top plate, the moving plate, the chassis, and the dehydrated and compressed sludge. The two second telescopic cylinders are inclined to offset the compression assembly out of the box body, remove the dehydrated and compressed sludge, and discharge the liquid through the liquid discharge port to complete the sludge dewatering work.

Images