Single-shaft mud-water separation device

Abstract

The invention relates to the technical field of mud-water separation, in particular to a single-shaft mud-water separation device. Comprising a mud-water separation mechanism used for conveying sludge and discharging part of water in the sludge, a rotating mechanism used for preventing the mud-water separation mechanism from being blocked, a driving mechanism used for driving the rotating mechanism to operate and a flocculation box used for containing sewage and the sludge, and a screw is arranged in the mud-water separation mechanism in a penetrating mode; the rotating mechanism is arranged on the periphery of the mud-water separation mechanism in a sleeving mode, the driving mechanism is arranged at one end of the mud-water separation mechanism and drives the rotating mechanism to rotate, the mud-water separation mechanism comprises a plurality of fixed rings and a plurality of movable rings, and each movable ring is arranged between every two adjacent fixed rings; the rotating mechanism externally drives the movable ring and the adjacent fixed ring to move relative to each other, blockage is prevented, the rotating mechanism is arranged on the outer side, so that abrasion between the screw and the mud-water separation mechanism is avoided, the service life is prolonged, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This invention relates to the field of mud-water separation technology, and in particular to a single-shaft mud-water separation device. Background Technology

[0002] Sludge dewatering is a sludge treatment method that removes water from fluidized raw, concentrated, or digested sludge, transforming it into semi-solid or solid sludge blocks. After dewatering, the moisture content of the sludge can be significantly reduced, facilitating subsequent transportation and processing.

[0003] Chinese invention patent with publication number CN101448557A discloses a solid-liquid separation device, which has a solid-liquid separation section with a fixed plate and a movable plate arranged alternately, and at least one screw extending through the solid-liquid separation section. The movable plate is configured such that the movable plate is pushed by the rotating screw, thereby preventing the gap between the fixed plate and the movable plate from being blocked.

[0004] In use, the rotating screw pushes the object to be processed in the solid-liquid separation section toward the outlet of the solid-liquid separation section, and the filtrate after separating the object to be processed is discharged out of the solid-liquid separation section through the filtrate discharge gap of the solid-liquid separation section.

[0005] However, in the aforementioned existing technology, the movable plate is driven to move by the contact and mutual compression between the screw and the movable plate. During operation, both the contact parts of the screw and the movable plate will wear down. After prolonged use, the wear becomes more severe. When the screw wears down, the diameter of the spiral blades on the screw decreases, and the gap between the spiral blades and the fixed plate increases. Sludge will stagnate in the gap between the outer edge of the spiral blades and the fixed plate, reducing the efficiency and effectiveness of sludge-water separation. When the movable plate wears down, the inner diameter of the movable plate increases, making it more difficult for the spiral blades on the screw to compress the movable plate. The range of motion of the movable plate decreases, which can easily lead to blockage. Moreover, the maintenance cost of the screw or the movable plate is high, and disassembly is extremely inconvenient. Therefore, there is an urgent need for a wear-free sludge-water separation device to solve the above problems. Summary of the Invention

[0006] In order to reduce the wear of the screw and movable plate, extend their service life, and greatly reduce maintenance and replacement costs, this invention provides a single-shaft mud-water separation device.

[0007] The present invention provides a single-shaft mud-water separation device, which adopts the following technical solution: A single-shaft mud-water separation device, comprising: A sludge-water separation mechanism is used to transport sludge and separate and discharge some of the water in the sludge. The sludge-water separation mechanism has a separation channel inside, which includes multiple fixed rings and multiple movable rings. Each movable ring is arranged between adjacent fixed rings, and the movable rings are in contact with the adjacent fixed rings and can move relative to each other. A screw is installed through the separation channel, and the screw does not contact the separation channel. A rotating mechanism is used to drive the movable ring and the fixed ring to move relative to each other. The rotating mechanism is located outside the mud-water separation mechanism and is movably connected to the movable ring. The rotating mechanism includes a rotatable driving component, which is sleeved on the outer periphery of the mud-water separation mechanism. An eccentric hole is provided inside the driving component. One side of the inner side of the eccentric hole contacts the movable ring. In the working state, the rotation of the driving component causes the contact position between the eccentric hole and the movable ring to shift, and the driving component pushes the movable ring to move relative to the fixed ring.

[0008] By adopting the above technical solution, after the sludge enters the sludge-water separation mechanism, the rotating screw moves the sludge towards the outlet of the sludge-water separation mechanism. At the same time, the filtrate separated from the sludge is discharged out of the sludge-water separation mechanism through the gap between the fixed ring and the movable ring of the sludge-water separation mechanism. The sludge with reduced liquid content is discharged out of the sludge-water separation mechanism from the outlet. The screw does not come into contact with or squeeze the movable ring, and the outer side of the screw's spiral blade and the inner side of the movable ring will not be worn at all, which extends the service life of the sludge-water separation device and eliminates the need for frequent disassembly and maintenance to ensure the sludge treatment efficiency and quality.

[0009] Furthermore, a guide groove is provided inside the eccentric hole, and the movable ring part enters the guide groove. A section of the mounting groove communicating with the guide groove is provided on the side of the guide groove away from the movable ring. The mounting groove is fully filled with cylindrical rollers. The mounting groove is located on the side close to the center of the driving component. When the contact position between the roller in the driving component and the movable ring changes, the roller in the driving component rotates, and the relative position between the movable ring and the fixed ring changes.

[0010] By adopting the above technical solution, the movable ring enters the guide groove inside the eccentric hole of the drive component, and the rest of the movable ring does not contact the drive component. When the drive component rotates, it squeezes the movable ring to move in the opposite direction. The movable ring contacts the roller inside the drive component, and the connection method is a rolling connection. This greatly reduces the degree of wear on the outer side of the movable ring and reduces the probability of gap blockage caused by wear on the outer side of the movable ring affecting the amplitude of relative movement with the fixed ring.

[0011] Furthermore, the movable ring includes a first movable ring and a second movable ring. The first movable ring and the second movable ring move synchronously. The outer diameter of the first movable ring is the same as the outer diameter of the fixed ring. At least one second movable ring is provided. The outer diameter of the second movable ring is larger than the outer diameter of the fixed ring. The second movable ring contacts a portion of the inner surface of the eccentric hole on the driving member. When the driving member rotates, the contact position between the second movable ring and the eccentric hole changes, and the driving member pushes the second movable ring to move relative to the fixed ring.

[0012] By adopting the above technical solution, the drive component rotates, the contact position between the eccentric hole and the second movable ring changes, pushing the second movable ring to move relative to the fixed ring, and the second movable ring drives all the first movable rings to move, preventing the gap between the movable ring and the fixed ring from being blocked.

[0013] Furthermore, the mud-water separation mechanism also includes at least two mounting plates. The movable ring and the fixed ring are installed between adjacent mounting plates. At least two first fixing rods are fixedly connected between adjacent mounting plates. The fixed ring is provided with a first connecting part adapted to the position of the first fixing rod. The first fixing rod passes through the first connecting part to fix multiple fixing rings between adjacent mounting plates. At least two second connecting parts are provided on the outer side of each of the first movable rings. A second fixing rod is provided through the second connecting part and also passes through the second movable ring. The first connecting part and the second connecting part are staggered. The second movable ring is provided with a slot adapted to the first connecting rod.

[0014] By adopting the above technical solution, the first fixing rod between adjacent mounting plates fixes the fixing ring, the second fixing rod connects multiple movable rings, the second movable ring can drive the first movable ring to move synchronously, and the slot of the second movable ring is locked at the first connecting rod to prevent rotation when the movable ring moves relative to the fixing ring, thereby improving the stability of the movable ring movement.

[0015] Furthermore, the rotating mechanism also includes a rotating cylinder, the driving component is fixedly connected to the inner side of the rotating cylinder, a rotating seat is fixedly installed on the inner side of the adjacent mounting plate, the rotating seat is sleeved on the outer side of the mud-water separation mechanism and does not contact the mud-water separation mechanism, a plurality of ball grooves are provided on the outer side of the rotating seat, ball balls are rotatably installed in the ball grooves, rotating rings are fixedly connected to both sides of the rotating cylinder, the rotating rings are rotatably connected to the rotating seat, and a plurality of water outlet holes are provided on the rotating cylinder.

[0016] By adopting the above technical solution, the rotating cylinder can rotate outside the mud-water separation mechanism. Multiple balls contact the rotating rings on both sides of the rotating cylinder, ensuring the stability of the rotation. The driving component is set on the inner side of the rotating cylinder. The driving component and the rotating cylinder can remain coaxial when rotating, and the contact between the driving component and the moving ring is more stable.

[0017] Furthermore, the single-shaft mud-water separation device also includes a drive mechanism, which includes a first geared motor. A discharge structure is fixedly connected to the outer side of the outermost mounting plate. The discharge structure is provided with a discharge chamber and a transmission chamber. The discharge chamber is located near the mounting plate. An isolation plate perpendicular to the screw is provided between the discharge chamber and the transmission chamber. A discharge port is provided on the side of the discharge structure near the mounting plate. The geared motor is fixedly connected to the end face of the discharge structure away from the mounting plate. A connecting shaft extends from the screw in the separation channel. The connecting shaft passes through the isolation plate and is connected to the first geared motor for transmission. An extrusion plate is fixedly connected to the connecting shaft near the discharge port.

[0018] By adopting the above technical solution, the first reduction motor starts and drives the screw to rotate. The screw can push the sludge in the separation channel to move towards the discharge port. When it reaches the discharge port, the spiral blades and the extrusion plate squeeze the sludge, and the separated water flows out in the gap between the fixed ring and the moving ring.

[0019] Furthermore, a first synchronous pulley is provided on the connecting shaft inside the transmission cavity, and a second synchronous pulley is also provided inside the transmission cavity. The first and second synchronous pulleys are connected by a synchronous belt. A transmission shaft is fixedly connected to one end of the second synchronous pulley. The transmission shaft passes through the isolation plate, the discharge structure, and the mounting plate in sequence. A first gear is fixedly connected to the end of the transmission shaft away from the second synchronous pulley. A second gear adapted to the first gear is provided on the outside of the rotating ring. The first and second gears mesh with each other. When the mounting plate is located in the middle of the mud-water separation mechanism, first gears are provided on both sides of the mounting plate. The two first gears are connected by a short shaft, and the two first gears mesh with the second gears on the rotating ring on the same side, respectively.

[0020] By adopting the above technical solution, the first geared motor rotates, driving the connecting shaft to rotate. Power is transmitted to the transmission shaft through the first synchronous pulley, the second synchronous pulley, and the synchronous belt, which in turn drives the first gear to rotate. The first gear drives the second gear to rotate, which in turn drives the rotating ring and the rotating cylinder to rotate. The driving component inside the rotating cylinder rotates with the rotating cylinder and rotates along the second movable ring, squeezing the second movable ring. This causes all movable rings to float relative to the fixed ring, reducing the probability of sludge clogging the gap between the movable ring and the fixed ring. The screw, rotating cylinder, and other components are driven by a first geared motor, resulting in a compact structure and simple control.

[0021] Furthermore, the bottom of the mud-water separation mechanism is provided with an installation frame, which is inclined. The side of the installation frame near the outlet of the mud-water separation mechanism is higher than the side away from the outlet of the mud-water separation mechanism. An opening is provided in the middle of the installation frame. A water collection tank is fixedly connected to the bottom of the installation frame. The installation frame is provided with a first support plate with the same number as the installation plate. The installation plate is fixedly connected to the first support plate. A drain outlet is provided on the water collection tank.

[0022] By adopting the above technical solution, the mounting frame is tilted, and the mud-water separation mechanism is also tilted with the mounting frame. During the process of conveying sludge to the outlet of the mud-water separation mechanism, the water squeezed out can flow in the opposite direction to the outlet of the mud-water separation mechanism. During the flow, the water seeps out in the gap between the moving ring and the fixed ring, thereby reducing the water content in the sludge and improving the mud-water separation effect.

[0023] Furthermore, the single-shaft mud-water separation device also includes a flocculation box, which is mounted on a mounting bracket on the side away from the first reduction motor. The flocculation box has a storage chamber inside, and a stirring component is installed inside the storage chamber. A second support plate is fixedly connected to the top of the flocculation box, and a second reduction motor is fixedly connected to the second support plate. The second reduction motor is connected to the stirring component in a transmission connection. A mud outlet is provided on the upper part of the side of the flocculation box near the mud-water separation mechanism. A mud inlet section is fixedly connected to the side of the mounting plate away from the first reduction motor on the side away from the first reduction motor. The inside of the mud inlet section is connected to the separation channel. The screw extends into the mud inlet section and is rotatably connected inside the mud inlet section. The mud outlet and the mud inlet section are connected by a mud inlet pipe.

[0024] By adopting the above technical solution, wastewater and PAM flocculant are placed in the flocculation tank. The PAM flocculant can precipitate the sludge in the wastewater. The second reduction motor drives the agitator to rotate, so that the wastewater and PAM flocculant are mixed evenly, accelerating the flocculation of sludge and PAM flocculant, and improving the sludge precipitation rate. The precipitated sludge floats on the top of the wastewater. After the sludge reaches a certain height, it enters the sludge outlet section and finally enters the sludge inlet section through the sludge inlet pipe, realizing the flocculation of sludge in the wastewater and introducing the flocculated sludge into the sludge-water separation mechanism.

[0025] Furthermore, a wastewater tank is provided on the upper part of the flocculation box away from the sludge discharge section. The wastewater tank is fixedly connected to the flocculation box. The wastewater tank is provided with a mixing chamber, a wastewater chamber, and an overflow chamber. A first partition is provided on one side of the mixing chamber to separate the mixing chamber from the wastewater chamber and the overflow chamber. A second partition is provided between the wastewater chamber and the overflow chamber. A rectangular opening is provided at the bottom of the mixing chamber to communicate with the flocculation box. The first partition is provided with a groove. The second partition is perpendicular to the first partition and is provided on one side of the groove. The side of the second partition away from the groove forms an overflow chamber with the wastewater tank. The second partition is higher than the lowest point of the groove and lower than the height of the first partition. An overflow port is provided at the bottom of the overflow chamber. A wastewater inlet is provided at the bottom of the wastewater chamber. A chemical inlet is provided on the side of the mixing chamber.

[0026] By adopting the above technical solution, the sewage in the sludge tank enters the sewage chamber through the sewage inlet. Then, when the sewage reaches the height of the groove on the first baffle, it enters the mixing chamber through the groove. PAM flocculant enters the mixing chamber through the inlet. After the PAM flocculant mixes with the sewage, it enters the flocculation box through the rectangular opening. When the sludge level reaches the highest level of the inlet chamber, the sludge will flow from the top of the second baffle into the overflow chamber and finally flow out through the overflow outlet back into the sludge tank. This prevents the sewage in the sewage chamber from flowing out of the sewage tank due to excessively high liquid level, which would affect the sludge dewatering process.

[0027] In summary, the present invention has at least one of the following beneficial technical effects: 1. By setting up a movable ring and a fixed ring to work together, the movable ring can move relative to the fixed ring, which can clean the sludge attached to the gap between the movable ring and the fixed ring, reducing the probability that the mud-water separation mechanism will be blocked and unable to dehydrate.

[0028] 2. A drive component is installed on the outside of the mud-water separation mechanism, and cylindrical rollers are provided on the part of the drive component that contacts the second movable ring. The drive component cooperates with the second movable ring, and part of the second movable ring enters the guide groove inside the eccentric hole of the drive component. The rest of the movable ring does not contact the drive component. When the drive component rotates, it squeezes the movable ring to move in the opposite direction. The movable ring contacts the roller inside the drive component. The connection method is a rolling connection, which greatly reduces the degree of wear on the outer side of the movable ring and reduces the probability of gap blockage caused by wear on the outer side of the movable ring affecting the amplitude of relative movement with the fixed ring. The screw no longer rubs against the movable ring, extending its service life and eliminating the need for frequent disassembly and replacement of the movable ring or screw, thus reducing maintenance costs.

[0029] 3. By setting up the overflow chamber and overflow outlet, when the sludge level reaches the highest level of the inlet chamber, the sludge will flow from the upper part of the second baffle into the overflow chamber and finally flow out at the overflow outlet back into the sludge tank, preventing the sewage in the sewage chamber from flowing out of the sewage tank due to excessively high liquid level, which would affect the sludge dewatering process. Attached Figure Description

[0030] Figure 1 This is a first-person view structural diagram of the entire application; Figure 2 This is a structural diagram of the entire application from a second perspective; Figure 3 This is a first-view structural diagram of the entire application after removing the rotating cylinder; Figure 4 This application Figure 3 Enlarged structural diagram at point A; Figure 5 This is a structural schematic diagram from a second perspective after the rotating cylinder is removed from the entire application; Figure 6 This is a top view of the overall structure of this application; Figure 7 This is a cross-sectional view of the entire application after removing the rotating cylinder. Figure 8 This application Figure 7 Enlarged structural diagram at point B; Figure 9 This is a cross-sectional structural diagram of the integral rotating seat of this application; Figure 10 This application Figure 9 Enlarged structural diagram at point C; Figure 11 This is a cross-sectional structural diagram of the mating point between the second active ring and the driving component in this application; Figure 12 This application Figure 11 Enlarged structural diagram at point D; Figure 13 This is a schematic diagram of the structure of the fixed ring and the movable ring in this application; Figure 14 This is a cross-sectional structural diagram of the fixed ring and the movable ring of this application; Figure 15 This is a schematic diagram of the structure of the rotating cylinder and the rotating ring in this application; Figure 16 This is a schematic diagram of the structure of the driver component of this application; Figure 17 This is a cross-sectional structural diagram of the driver component of this application; Figure 18 This is a schematic diagram of the rotating seat of this application; Figure 19 This is a schematic diagram of the structure of the fixing ring in this application; Figure 20 This is a schematic diagram of the structure of the first active ring of this application; Figure 21This is a schematic diagram of the structure of the second active ring of this application; Reference numerals: 100, mud-water separation mechanism; 110, separation channel; 120, fixed ring; 121, first connecting part; 130, first movable ring; 131, second connecting part; 140, second movable ring; 141, slot; 150, mounting plate; 151, first fixed rod; 152, second fixed rod; 160, rotating seat; 170, ball bearing; 180, mud inlet section; 200, rotating mechanism; 210, driving component; 220, eccentric hole; 221, guide groove; 222, mounting groove; 223, roller; 230, rotating cylinder; 231, water outlet; 240, rotating ring; 300, screw; 310, connecting shaft; 320, extrusion plate; 400, driving mechanism; 410, first geared motor; 420, first synchronous pulley; 430, second synchronous pulley; 440 1. Synchronous belt; 450. First gear; 460. Second gear; 470. Drive shaft; 500. Discharge structure; 510. Discharge chamber; 520. Transmission chamber; 530. Discharge port; 540. Isolation plate; 600. Mounting frame; 610. Water collection tank; 611. Drain outlet; 620. First support plate; 700. Flocculation box; 710. Storage chamber; 720. Mixing component; 730. Second support plate; 740. Second geared motor; 750. Sludge discharge section; 760. Sludge inlet pipe; 800. Sewage tank; 810. Mixing chamber; 820. Sewage chamber; 830. Overflow chamber; 840. First partition plate; 841. Groove; 850. Second partition plate; 860. Overflow port; 870. Sewage inlet; 880. Chemical inlet; 890. Water outlet pipe; 891. Valve; 900. Controller. Detailed Implementation

[0031] It should be understood that all descriptions are given for illustrative purposes only and should not be construed as limiting the invention in any way. In this document, the technical terms "first" and "second" are used for distinguishing purposes only and are not intended to indicate their order or relative importance. The technical term "connection (or linking, etc.)" covers a specific component being directly connected to another component and / or indirectly connected to another component. Furthermore, unless otherwise expressly specified and limited, the dimensions, directions, or positional relationships indicated by technical terms such as "length," "width," "height," "upper," "top," and "bottom" are based on the dimensions, orientations, or positional relationships shown in the accompanying drawings and are used only for the convenience and simplicity of describing the invention, and should not be construed as limiting the invention.

[0032] The following combination Figures 1 to 21 The present invention will be described in further detail below.

[0033] This embodiment discloses a single-shaft mud-water separation device, referring to... Figures 1-21The system includes a sludge-water separation mechanism 100 for conveying sludge and removing some of the water from the sludge, a rotating mechanism 200 for preventing clogging of the sludge-water separation mechanism 100, a drive mechanism 400 for driving the rotating mechanism 200, and a flocculation tank 700 for holding sewage and sludge. The sludge-water separation mechanism 100 is inclined and has a screw 300 running through it. The rotating mechanism 200 is installed on the outside of the sludge-water separation mechanism 100. The drive mechanism 400 is located at one end of the sludge-water separation mechanism 100, and the flocculation tank 700 is located at the other end of the sludge-water separation mechanism 100. During operation, the sludge containing a large amount of water is flocculated in the flocculation tank 700. The sludge enters the sludge-water separation mechanism 100. Inside the sludge-water separation mechanism 100, the screw 300 rotates to transport the sludge to the outlet and squeezes the sludge at the outlet. The rotating mechanism 200 rotates outside the sludge-water separation mechanism 100, driving the components inside the sludge-water separation mechanism 100 to move relative to each other, preventing blockage. The rotating mechanism 200 is located on the outside so that there is no wear between the screw 300 and the sludge-water separation mechanism 100, reducing the probability that the outer surface of the moving ring will be worn and affect the amplitude of relative movement with the fixed ring 120, thus causing gap blockage. The screw 300 no longer rubs against the moving ring, extending its service life and reducing the frequency of maintenance.

[0034] Reference Figures 1-3 , Figures 5-7 In this embodiment, a mounting frame 600 is provided at the bottom of the mud-water separation mechanism 100. The mounting frame 600 is inclined, and the side of the mounting frame 600 near the outlet of the mud-water separation mechanism 100 is higher than the side away from the outlet of the mud-water separation mechanism 100. A support leg is fixedly connected to the bottom of the mounting frame 600. An opening is provided in the middle of the mounting frame 600. A water collection tank 610 is fixedly connected to the bottom of the mounting frame 600. A drain outlet 611 is provided on the water collection tank 610.

[0035] Thus, with the mounting frame 600 tilted, the sludge-water separation mechanism 100 also tilts along with the mounting frame 600. During the process of conveying sludge to the outlet of the sludge-water separation mechanism 100, the squeezed water flows in the opposite direction to the outlet of the sludge-water separation mechanism 100. During the flow, the water seeps out in the gaps of the sludge-water separation mechanism 100, thereby reducing the water content in the sludge and improving the sludge-water separation effect.

[0036] Reference Figures 7-8 , Figures 13-14 , Figures 19-21In this embodiment, a separation channel 110 is formed inside the mud-water separation mechanism 100. The cross-section of the separation channel 110 is circular, and it includes multiple fixed rings 120 and multiple movable rings. Each movable ring is arranged between adjacent fixed rings 120. The inner diameter of the movable ring is larger than the inner diameter of the fixed ring 120 to ensure that the movable ring will not touch the screw 300 when it moves. The movable ring and the adjacent fixed ring 120 are in contact and can move relative to each other. A screw 300 is provided through the separation channel 110. The outer side of the screw 300 has a spiral blade. The screw 300 does not contact the separation channel 110 and has a small gap. The distance between the outermost spiral blade and the separation channel 110 is 5-10 mm.

[0037] More specifically, the movable ring includes a first movable ring 130 and a second movable ring 140. The first movable ring 130 and the second movable ring 140 move synchronously. The outer diameter of the first movable ring 130 is the same as the outer diameter of the fixed ring 120. At least one second movable ring 140 is provided. The outer diameter of the second movable ring 140 is larger than the outer diameter of the fixed ring 120. The second movable ring 140 contacts part of the inner surface of the eccentric hole 220 on the driving member 210. When the driving member 210 rotates, the contact position between the second movable ring 140 and the eccentric hole 220 changes. The driving member 210 pushes the second movable ring 140 to move relative to the fixed ring 120.

[0038] In this embodiment, the mud-water separation mechanism 100 further includes four parallel mounting plates 150. The mounting frame 600 is provided with the same number of first support plates 620 as the mounting plates 150. The mounting plates 150 are fixedly connected to the first support plates 620. Movable rings and fixed rings 120 are installed between adjacent mounting plates 150. Four first fixing rods 151 are fixedly connected between adjacent mounting plates 150. The fixed rings 120 are provided with four first connecting portions 121 that are adapted to the positions of the first fixing rods 151. The first fixing rods 151 penetrate through the first connecting portions 121 to pass through multiple... A fixed ring 120 is fixed between adjacent mounting plates 150. Two second connecting parts 131 are provided on the outer side of the first movable ring 130. A second fixing rod 152 is provided through the second connecting part 131. The second fixing rod 152 does not contact the mounting plate 150. The first connecting part 121 and the second connecting part 131 are staggered. The second movable ring 140 is provided with four slots 141 that are adapted to the first connecting rod. In this embodiment, the four first connecting parts 121 are provided on the left and right sides of the fixed ring 120, and the two second connecting parts 131 are provided on the upper and lower sides of the movable ring. There are three areas between the four parallel mounting plates 150. Each area is fixed with four first fixing rods 151. The first fixing rods 151 are fixed to the mounting plate 150 by bolts. The first fixing rods 151 between adjacent areas are staggered to leave space for the bolts to be installed. During installation, the fixing ring 120 and the movable ring in the outermost area are installed first, then the middle area is installed, and finally the last area is installed until all are installed. This makes it easier to install the fixing ring 120 and the movable ring during assembly, and makes installation and disassembly more convenient.

[0039] Thus, the first fixing rod 151 between adjacent mounting plates 150 fixes the fixing ring 120, the second fixing rod 152 connects multiple movable rings, the second movable ring 140 can drive the first movable ring 130 to move synchronously, and the slot 141 of the second movable ring 140 is locked at the first connecting rod to prevent rotation when the movable ring moves relative to the fixing ring 120, thereby improving the stability of the movable ring's movement.

[0040] The rotating mechanism 200 rotates, and the contact position between the rotating mechanism 200 and the second movable ring 140 changes, pushing the two second movable rings 140 to move relative to the fixed ring 120. The second movable rings 140 also drive all the first movable rings 130 to move relative to the fixed ring 120, preventing the gap between the movable rings and the fixed ring 120 from being blocked.

[0041] Reference Figures 1-7 , Figures 11-12 , Figures 15-18In this embodiment, the rotating mechanism 200 is disposed outside the mud-water separation mechanism 100 and movably connected to the movable ring. The rotating mechanism 200 includes a rotatable driving member 210 and a rotatable rotating cylinder 230 sleeved on the outer periphery of the mud-water separation mechanism 100. The driving member 210 is sleeved on the outer side of the mud-water separation mechanism 100, and an eccentric hole 220 is provided inside the driving member 210. The diameter of the eccentric hole 220 is larger than the diameter of the second movable ring 140. The inner part of the eccentric hole 220 contacts the movable ring. In the working state, the driving member 210 rotates the contact position between the eccentric hole 220 and the movable ring. When a displacement occurs, the movable ring moves relative to the fixed ring 120; the driving component 210 is fixedly connected to the inner side of the rotating cylinder 230, and a rotating seat 160 is fixedly installed on the inner side of the adjacent mounting plate 150. The rotating seat 160 is sleeved on the outer side of the mud-water separation mechanism 100 and does not contact the mud-water separation mechanism 100. Multiple ball grooves are provided on the outer side of the rotating seat 160, and ball bearings 170 are rotatably installed in the ball grooves. Rotating rings 240 are fixedly connected to both sides of the rotating cylinder 230 and are rotatably connected to the rotating seat 160. Multiple water outlet holes 231 are provided on the rotating cylinder 230.

[0042] In this way, the rotating cylinder 230 can rotate outside the mud-water separation mechanism 100. Multiple balls 170 contact the rotating rings 240 on both sides of the rotating cylinder 230, ensuring the stability of the rotation. The drive component 210 is set on the inner side of the rotating cylinder 230. The drive component 210 and the rotating cylinder 230 can remain coaxial when rotating. The contact between the drive component 210 and the movable ring is more stable. After the water in the mud-water separation mechanism 100 flows out, it flows out in the water outlet 231 of the rotating cylinder 230.

[0043] Furthermore, a guide groove 221 is provided inside the eccentric hole 220. The guide groove 221 is slightly larger than the thickness of the movable ring, allowing the movable ring to enter the guide groove 221. A mounting groove 222 communicating with the guide groove 221 is provided on the side of the guide groove 221 away from the movable ring. The width of the mounting groove 222 is greater than the width of the guide groove 221. The mounting groove 222 is fully filled with cylindrical rollers 223, which will not fall out of the mounting groove 222. The mounting groove 222 is located on the side close to the center of the drive member 210. When the contact position between the rollers 223 in the drive member 210 and the movable ring changes, the rollers 223 in the drive member 210 rotate, and the relative position between the movable ring and the fixed ring 120 changes. When the movable ring contacts the rollers 223, it is at the farthest end on the side away from the rollers 223.

[0044] In this way, the movable ring enters the guide groove 221 inside the eccentric hole 220 of the drive component 210, and the rest of the movable ring does not contact the drive component 210. When the drive component 210 rotates, it squeezes the movable ring to move in the opposite direction. The movable ring contacts the roller 223 inside the drive component 210, and the connection method is a rolling connection. This greatly reduces the degree of wear on the outer side of the movable ring and reduces the probability of gap blockage caused by wear on the outer side of the movable ring affecting the amplitude of relative movement with the fixed ring 120.

[0045] Reference Figures 7-8 In this embodiment, the drive mechanism 400 includes a first reduction motor 410. A discharge structure 500 is fixedly connected to the outer side of the outermost mounting plate 150. The discharge structure 500 is cuboid in shape and contains a discharge cavity 510 and a transmission cavity 520, both of which penetrate the discharge structure 500. A partition plate 540 perpendicular to the screw 300 is provided between the discharge cavity 510 and the transmission cavity 520. A discharge port 530 is provided on the side near the mounting plate 150. The discharge port 530 is connected to the separation channel 110. The first reduction motor 410 is fixedly connected to the end face of the discharge structure 500 away from the mounting plate 150. The screw 300 extends a connecting shaft 310 in the separation channel 110. The connecting shaft 310 passes through the isolation plate 540 and is connected to the first reduction motor 410 for transmission. An extrusion plate 320 is fixedly connected to the connecting shaft 310 near the discharge port 530.

[0046] In this embodiment, the extrusion plate 320 is a circular plate with a diameter greater than or equal to the inner diameter of the fixing ring 120, and the end of the extrusion plate 320 near the separation channel 110 is a flat surface; in another embodiment, the surface of the extrusion plate 320 near the separation channel 110 is set to a sawtooth or wave-shaped surface.

[0047] Thus, the first geared motor 410 starts, driving the screw 300 to rotate. The screw 300 can push the sludge in the separation channel 110 to the discharge port 530. When it reaches the discharge port 530, the spiral blades and the extrusion plate 320 extrude the sludge. The separated water flows out in the gap between the fixed ring 120 and the movable ring. The serrated or wavy extrusion plate 320 can provide greater friction to the sludge. The sludge can withstand greater pressure during the extrusion process, and the water content of the sludge is further reduced, thus improving the effect of mud-water separation.

[0048] Reference Figures 9-10In this embodiment, a first synchronous pulley 420 is provided on the connecting shaft 310 inside the transmission cavity 520, and a second synchronous pulley 430 is also provided inside the transmission cavity 520. The first synchronous pulley 420 and the second synchronous pulley 430 are connected by a synchronous belt 440. One end of the second synchronous pulley 430 is fixedly connected to a transmission shaft 470. The transmission shaft 470 passes through the isolation plate 540, the discharge structure 500 and the mounting plate 150 in sequence. The end of the transmission shaft 470 away from the second synchronous pulley 430 is fixedly connected to a first gear 450. A second gear 460 adapted to the first gear 450 is provided on the outside of the rotating ring 240. The first gear 450 and the second gear 460 mesh with each other. When the mounting plate 150 is located in the middle of the mud-water separation mechanism 100, the first gear 450 is provided on both sides of the mounting plate 150. The two first gears 450 are connected by a short shaft, and both first gears 450 mesh with the second gear 460 on the adapted rotating ring 240.

[0049] Thus, the first geared motor 410 rotates, driving the connecting shaft 310 to rotate. Through the first synchronous pulley 420, the second synchronous pulley 430, and the synchronous belt 440, the power is transmitted to the transmission shaft 470, which in turn drives the first gear 450 to rotate. The first gear 450 drives the second gear 460 to rotate, which in turn drives the rotating ring 240 and the rotating cylinder 230 to rotate. The driving component 210 inside the rotating cylinder 230 rotates with the rotating cylinder 230 and rotates along the second movable ring 140, squeezing the second movable ring 140. This causes all movable rings to float relative to the fixed ring 120, reducing the probability of sludge clogging the gap between the movable ring and the fixed ring 120. The screw 300, the rotating cylinder 230, and other components are driven by a first geared motor 410, resulting in a compact structure and simple control.

[0050] Reference Figures 1-3 , Figures 5-7In this embodiment, the flocculation box 700 is mounted on the mounting bracket 600 on the side away from the first reduction motor 410. The flocculation box 700 has a storage cavity 710, and a stirring element 720 is disposed within the storage cavity 710. The stirring element 720 is a cylindrical rod with multiple layers of agitating blades at its bottom. A second support plate 730 is fixedly connected to the top of the flocculation box 700, and a second reduction motor 740 is fixedly connected to the second support plate 730. The output end of the second reduction motor 740 is connected to the stirring element 720. The flocculation box 700 is located near the mud-water separation mechanism 1. A mud discharge section 750 is provided on the upper part of one side of the 00. A mud inlet section 180 is fixedly connected to the side of the mounting plate 150 away from the first geared motor 410. The mud inlet section 180 is connected to the separation channel 110. The screw 300 extends into the mud inlet section 180 and is rotatably connected inside the mud inlet section 180. The mud discharge section 750 and the mud inlet section 180 are connected by a mud inlet pipe 760. A water outlet pipe 890 is provided at one end of the flocculation box 700 near the water collection tank 610. A valve 891 with a control switch is provided on the water outlet pipe 890.

[0051] A wastewater tank 800 is installed on the upper part of the side of the flocculation box 700 away from the sludge discharge section 750. The bottom of the wastewater tank 800 is higher than the height of the flocculation box 700, allowing the flocculation box 700 to hold more wastewater. The wastewater tank 800 is fixedly connected to the flocculation box 700. The wastewater tank 800 contains a mixing chamber 810, a wastewater chamber 820, and an overflow chamber 830. A first partition 840 is installed on one side of the mixing chamber 810, separating the mixing chamber 810 from the wastewater chamber 820 and the overflow chamber 830. A second partition 850 is installed between the wastewater chamber 820 and the overflow chamber 830. A rectangular opening is provided at the bottom of the mixing chamber 810, communicating with the flocculation box 700. A cover is fixedly connected to the rectangular opening inside the flocculation box 700. The cover has a downward opening, allowing wastewater to flow downwards after entering the flocculation box 700, reducing the impact of wastewater entering the flocculation box 700. The effect of the flocculated sludge in the upper part reduces the fluctuation of the water surface in the upper part of the flocculation tank 700 and improves the stability of the sludge entering the sludge outlet 750. The first partition 840 is provided with a groove 841. The second partition 850 is perpendicular to the first partition 840 and is provided on one side of the groove 841. The side of the second partition 850 away from the groove 841 forms an overflow cavity 830 with the sewage tank 800. The second partition 850 is higher than the lowest point of the groove 841 and lower than the height of the first partition 840. An overflow port 860 is provided at the bottom of the overflow cavity 830. A sewage inlet 870 is provided at the bottom of the sewage cavity 820. A chemical inlet 880 is provided on the side of the mixing cavity 810. Specifically, the chemical added at the chemical inlet 880 is PAM flocculant, chemical name polyacrylamide, which is a water-soluble polymer and is commonly used as a coagulant aid, flocculant and sludge dewatering agent in water treatment.

[0052] Thus, the sewage in the sludge tank enters the sewage chamber 820 through the sewage inlet 870. When the sewage reaches the height of the groove 841 on the first partition 840, it enters the mixing chamber 810 through the groove 841. PAM flocculant is added at the chemical inlet 880 in the mixing chamber 810. After the PAM flocculant mixes with the sewage, it enters the flocculation tank 700 through the rectangular opening. When the sludge level reaches the highest level of the chemical inlet chamber, the sludge will flow from the upper part of the second partition 850 into the overflow chamber 830, and finally flow out at the overflow outlet 860 back into the sludge tank. This prevents the sewage in the sewage chamber 820 from flowing out of the sewage tank 800 due to the excessively high liquid level, which would affect the sludge dewatering process.

[0053] It should be understood that PAM flocculant can precipitate sludge from wastewater. The second reduction motor 740 drives the agitator 720 to rotate, so that the wastewater and PAM flocculant are mixed evenly, accelerating the flocculation of sludge and PAM flocculant, and improving the sludge precipitation rate. The precipitated sludge floats on the top of the wastewater. After the sludge reaches a certain height, it enters the sludge outlet 750 and finally enters the sludge inlet section 180 through the sludge inlet pipe 760, realizing the flocculation of sludge in wastewater and introducing the flocculated sludge into the sludge-water separation mechanism 100.

[0054] This solution also includes a controller 900. The position of the controller 900 is set by the operator according to the actual situation during operation. Preferably, the controller 900 is fixedly connected to the mounting bracket 600. The controller 900 is used to control the electrical components used in this solution, including but not limited to the first geared motor 410 and the second geared motor 740, and can adjust their speed and switch them on and off. The controller 900 is an Intel processor, AMD processor, PLC controller 900, ARM processor, or microcontroller. It is used in conjunction with a motherboard, memory module, storage medium, and power supply. The power supply is AC power. When a display screen is provided, a display card is also provided.

[0055] The implementation principle of this embodiment is as follows: First, the wastewater in the sludge tank enters the wastewater chamber 820 through the wastewater inlet 870. Then, when the wastewater reaches the height of the groove 841 on the first partition 840, it enters the mixing chamber 810 through the groove 841. At this time, PAM flocculant is added at the chemical inlet 880 in the mixing chamber 810. After the PAM flocculant mixes with the wastewater, it enters the flocculation box 700 through the rectangular opening. When the sludge level reaches the highest level of the chemical inlet chamber, the sludge will flow from the upper part of the second partition 850 into the overflow chamber 830, and finally flow out at the overflow outlet 860 back into the sludge tank.

[0056] PAM flocculant precipitates sludge from the wastewater. The second reduction motor 740 drives the agitator 720 to rotate, making the wastewater and PAM flocculant mix evenly and accelerating the flocculation of sludge and PAM flocculant. The precipitated sludge floats on the top of the wastewater. After the sludge reaches a certain height, it enters the sludge outlet 750 and then enters the sludge inlet section 180 through the sludge inlet pipe 760.

[0057] Then, the first reduction motor 410 starts, driving the screw 300 to rotate. The screw 300 can push the sludge in the separation channel 110 to the discharge port 530. When it reaches the discharge port 530, the spiral blades and the extrusion plate 320 extrude the sludge. The separated water flows out in the gap between the fixed ring 120 and the movable ring. At the same time, the power is transmitted to the transmission shaft 470 through the first synchronous pulley 420, the second synchronous pulley 430 and the synchronous belt 440, which drives the first gear 450 to rotate. The first gear 450 drives the second gear 460 to rotate, which in turn drives the rotating ring 240 and the rotating cylinder 230 to rotate. The driving component 210 in the rotating cylinder 230 rotates with the rotating cylinder 230. The second movable ring 140 partially enters the guide groove 221 inside the eccentric hole 220 of the driving component 210. Inside, the rest of the movable ring does not contact the drive member 210. The drive member 210 rotates and squeezes the second movable ring 140 to move in the opposite direction. The movable ring contacts the roller 223 inside the drive member 210. The connection method is a rolling connection, which greatly reduces the degree of wear on the outer side of the movable ring. The drive member 210 rotates along the second movable ring 140 and squeezes the second movable ring 140, so that all the movable rings float relative to the fixed ring 120, pushing away the sludge in the gap inside the separation channel 110, reducing the probability of sludge clogging the gap between the movable ring and the fixed ring 120. The water squeezed out of the sludge enters the water collection tank 610 and can finally be discharged at the drain outlet 611, achieving the separation of mud and water and realizing wear-free operation between the screw 300 and the movable ring.

[0058] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A single-shaft mud-water separation device, characterized in that, include: A sludge-water separation mechanism is used to transport sludge and separate and discharge some of the water in the sludge. The sludge-water separation mechanism has a separation channel inside, which includes multiple fixed rings and multiple movable rings. Each movable ring is arranged between adjacent fixed rings, and the movable rings are in contact with the adjacent fixed rings and can move relative to each other. A screw is installed through the separation channel, and the screw does not contact the separation channel. A rotating mechanism is used to drive the movable ring and the fixed ring to move relative to each other. The rotating mechanism is located outside the mud-water separation mechanism and is movably connected to the movable ring. The rotating mechanism includes a rotatable driving component, which is sleeved on the outer periphery of the mud-water separation mechanism. An eccentric hole is provided inside the driving component. One side of the inner side of the eccentric hole contacts the movable ring. In the working state, the rotation of the driving component causes the contact position between the eccentric hole and the movable ring to shift, and the driving component pushes the movable ring to move relative to the fixed ring.

2. The single-shaft mud-water separation device according to claim 1, characterized in that, A guide groove is provided inside the eccentric hole, and the movable ring part enters the guide groove. A section of the mounting groove communicating with the guide groove is provided on the side of the guide groove away from the movable ring. The mounting groove is fully filled with cylindrical rollers. The mounting groove is located on the side close to the center of the driving component. When the contact position between the roller in the driving component and the movable ring changes, the roller in the driving component rotates, and the relative position between the movable ring and the fixed ring changes.

3. The single-shaft mud-water separation device according to claim 2, characterized in that, The movable ring includes a first movable ring and a second movable ring. The first movable ring and the second movable ring move synchronously. The outer diameter of the first movable ring is the same as the outer diameter of the fixed ring. At least one second movable ring is provided. The outer diameter of the second movable ring is larger than the outer diameter of the fixed ring. The second movable ring contacts the cylindrical roller in the driving member. When the driving member rotates, the contact position between the second movable ring and the eccentric hole changes. The driving member pushes the second movable ring to move relative to the fixed ring.

4. The single-shaft mud-water separation device according to claim 3, characterized in that, The mud-water separation mechanism further includes at least two mounting plates. The movable ring and the fixed ring are installed between adjacent mounting plates. At least two first fixing rods are fixedly connected between adjacent mounting plates. The fixed ring is provided with a first connecting part adapted to the position of the first fixing rod. The first fixing rod passes through the first connecting part and fixes multiple fixing rings between adjacent mounting plates. At least two second connecting parts are provided on the outer side of the first movable ring. A second fixing rod is provided through the second connecting part and also passes through the second movable ring. The first connecting part and the second connecting part are staggered. The second movable ring is provided with a slot adapted to the first connecting rod.

5. The single-shaft mud-water separation device according to claim 4, characterized in that, The rotating mechanism also includes a rotating cylinder. The driving component is fixedly connected to the inner side of the rotating cylinder. A rotating seat is fixedly installed on the inner side of the adjacent mounting plate. The rotating seat is sleeved on the outside of the mud-water separation mechanism and does not contact the mud-water separation mechanism. Multiple ball grooves are provided on the outside of the rotating seat. Balls are rotatably installed in the ball grooves. Rotating rings are fixedly connected to both sides of the rotating cylinder. The rotating rings are rotatably connected to the rotating seat. Multiple water outlet holes are provided on the rotating cylinder.

6. The single-shaft mud-water separation device according to claim 5, characterized in that, The single-shaft mud-water separation device also includes a drive mechanism, which includes a first geared motor. A discharge structure is fixedly connected to the outer side of the outermost mounting plate. The discharge structure is provided with a discharge chamber and a transmission chamber. The discharge chamber is located near the mounting plate. An isolation plate perpendicular to the screw is provided between the discharge chamber and the transmission chamber. A discharge port is provided on the side of the discharge structure near the mounting plate. The first geared motor is fixedly connected to the end face of the discharge structure away from the mounting plate. The screw extends a connecting shaft in the separation channel. The connecting shaft passes through the isolation plate and is connected to the first geared motor for transmission. An extrusion plate is fixedly connected to the connecting shaft near the discharge port.

7. The single-shaft mud-water separation device according to claim 6, characterized in that, A first synchronous pulley is provided on the connecting shaft inside the transmission cavity, and a second synchronous pulley is also provided inside the transmission cavity. The first and second synchronous pulleys are connected by a synchronous belt. A transmission shaft is fixedly connected to one end of the second synchronous pulley. The transmission shaft passes through the isolation plate, the discharge structure, and the mounting plate in sequence. A first gear is fixedly connected to the end of the transmission shaft away from the second synchronous pulley. A second gear that is adapted to and meshes with the first gear is provided on the outer side of the rotating ring. When the mounting plate is located in the middle of the mud-water separation mechanism, first gears are provided on both sides of the mounting plate. The two first gears are connected by a short shaft, and the two first gears mesh with the second gear on the rotating ring on the same side.

8. The single-shaft mud-water separation device according to any one of claims 3-7, characterized in that, The mud-water separation mechanism is provided with a mounting frame at the bottom. The mounting frame is inclined, with the side of the mounting frame near the outlet of the mud-water separation mechanism being higher than the side away from the outlet. The mounting frame has an opening in the middle. A water collection tank is fixedly connected to the bottom of the mounting frame. The mounting frame is provided with a first support plate, the same number as the mounting plate. The mounting plate is fixedly connected to the first support plate. A drain outlet is provided on the water collection tank.

9. The single-shaft mud-water separation device according to claim 8, characterized in that... The single-shaft mud-water separation device also includes a flocculation box, which is mounted on a mounting bracket on the side away from the first reduction motor. The flocculation box has a storage chamber and a stirring component inside. A second support plate is fixedly connected to the top of the flocculation box, and a second reduction motor is fixedly connected to the second support plate. The second reduction motor is connected to the stirring component in a transmission connection. A mud outlet is provided on the upper part of the flocculation box near the mud-water separation mechanism. A mud inlet section is fixedly connected to the side of the mounting plate away from the first reduction motor. The mud inlet section communicates with the separation channel. The screw extends into the mud inlet section and is rotatably connected within the mud inlet section. The mud outlet and the mud inlet section are connected by a mud inlet pipe.

10. The single-shaft mud-water separation device according to claim 9, characterized in that, A wastewater tank is located on the upper part of the flocculation box away from the sludge discharge section. The wastewater tank is fixedly connected to the flocculation box. The wastewater tank contains a mixing chamber, a wastewater chamber, and an overflow chamber. A first partition is provided on one side of the mixing chamber to separate the mixing chamber from the wastewater chamber and the overflow chamber. A second partition is provided between the wastewater chamber and the overflow chamber. A rectangular opening is provided at the bottom of the mixing chamber to communicate with the flocculation box. The first partition has a groove. The second partition is perpendicular to the first partition and is located on one side of the groove. The side of the second partition away from the groove forms an overflow chamber with the wastewater tank. The second partition is higher than the lowest point of the groove and lower than the height of the first partition. An overflow port is provided at the bottom of the overflow chamber. A wastewater inlet is provided at the bottom of the wastewater chamber. A chemical inlet is provided on the side of the mixing chamber.

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