Efficient sludge centrifugal dewatering treatment system and method

Abstract

The present application relates to sludge treatment device technical field, specifically to a kind of efficient sludge centrifugal dewatering treatment system and method.A kind of efficient sludge centrifugal dewatering treatment system includes drum, connecting pipe and dewatering mechanism.Drum includes conical tube, and dewatering mechanism includes dewatering assembly and adjusting assembly.Dewatering assembly includes movable auger and opening plate.When drum is blocked, material in drum needs to be discharged, opening plate moves away from the axis of connecting pipe, the differential between movable auger and drum gradually increases, and the greater torque generated can actively push the blocked material out.Moreover, the displacement of movable auger towards the first end of conical tube increases gradually, which can discharge material more quickly, efficiently solve the problem of blockage, while achieving continuous operation without shutdown, significantly improving the operating efficiency of dewatering equipment.The present application provides a kind of efficient sludge centrifugal dewatering treatment system and method to solve the problem that existing dewatering machine cannot be cleaned automatically when blocked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment device, in particular to a high-efficiency sludge centrifugal dewatering treatment system and method. BACKGROUND

[0002] Sludge treatment equipment is a mechanical device for centralized treatment of sewage sludge, which mainly realizes sludge dewatering, drying and resource utilization through physical methods. Such equipment includes core components such as mud scraper, filter crusher and sludge dryer, and is widely used in fields such as urban sewage treatment and organic garbage digestion.

[0003] Horizontal screw type dewatering machine is a kind of centrifuge commonly used in sludge dewatering process. Its main components are drum and spiral conveyor with hollow shaft. When working, the sludge is sent into the drum by the hollow shaft, and under the action of centrifugal force generated by high-speed rotation, the sludge particles with higher density are thrown to the inner wall of the drum to form a solid layer. While the water with lower density is distributed inside the solid layer to form a liquid layer. The sludge in the solid layer is slowly pushed by the spiral conveyor to the conical end of the drum and discharged. The liquid in the liquid layer is continuously overflowed and discharged through the outlets around the drum.

[0004] The centrifugal dewatering machine provided in the patent application with publication number CN102519226A utilizes the differential rotation of the inner rotor and the outer rotor to realize the dewatering of different materials in need of dewatering, and is suitable for dewatering operation of viscous materials. However, the device still has obvious limitations in actual operation: on the one hand, its structure is prone to flow passage blockage when facing fibrous materials or materials prone to aggregation, and the cleaning process must be carried out with the machine stopped, which seriously restricts the efficiency of continuous production. On the other hand, frequent blockage and cleaning not only increases the cost of manual maintenance, but also may lead to a reduction in the effective operation time of the equipment and a decrease in overall processing capacity. SUMMARY

[0005] The present application provides a high-efficiency sludge centrifugal dewatering treatment system and method to solve the problem that the existing dewatering machine cannot be cleaned automatically when it is blocked.

[0006] The high-efficiency sludge centrifugal dewatering treatment system and method of the present application adopts the following technical solution: a high-efficiency sludge centrifugal dewatering treatment system includes a housing, a drum, a connecting pipe and a dewatering mechanism. The drum is horizontally arranged and rotatably arranged on the housing. The connecting pipe is arranged in the drum and coaxial with the drum. The drum and the connecting pipe rotate in the same direction and have a differential speed. The drum includes a conical pipe and a straight cylinder. The two ends of the conical pipe are a first end and a second end, respectively, and the diameter of the first end is smaller than the diameter of the second end. The second end of the conical pipe is connected with the straight cylinder.

[0007] The dewatering mechanism comprises a dewatering assembly and an adjusting assembly. The dewatering assembly comprises a movable auger and a plurality of opening plates. The movable auger is arranged outside the connecting pipe and inside the tapered pipe coaxially with the connecting pipe. The movable auger is movable along the axial direction of the connecting pipe. The movable auger is used to move the material along the direction from the second end to the first end of the tapered pipe.

[0008] The opening plates are arranged outside the connecting pipe and slide along the radial direction of the connecting pipe, and the opening plates rotate synchronously with the connecting pipe. The opening plates are arranged at the connection between the tapered pipe and the straight cylinder, and the opening plates are distributed along the circumferential direction of the connecting pipe.

[0009] The dewatering mechanism has a first state and a second state. In the first state, the opening plates rotate synchronously with the movable auger by the adjusting assembly. In the second state, the opening plates move, the movable auger rotates relative to the connecting pipe by the adjusting assembly, and the movable auger moves along the axial direction of the connecting pipe. The farther the opening plates are from the axis of the connecting pipe, the greater the speed difference between the movable auger and the rotary drum, and the greater the displacement of the end of the movable auger close to the opening plates towards the first end of the tapered pipe, and the faster the material in the rotary drum is discharged.

[0010] Further, a slag discharge port is formed in the shell and communicates with the first end of the tapered pipe, and an outlet is formed in the end of the straight cylinder away from the tapered pipe. A storage cavity is formed in the connecting pipe and communicates with the straight cylinder. A feeding pipe is arranged in the connecting pipe and communicates with the storage cavity. A telescopic baffle is arranged on the shell and corresponds to the outlet. When the telescopic baffle is gradually extended, the telescopic baffle gradually approaches the axis of the connecting pipe, so that the thickness of the liquid layer along the radial direction of the connecting pipe increases.

[0011] Further, the dewatering assembly further comprises a plurality of corrugated plates, each corrugated plate connecting two adjacent opening plates to block the gap between the two adjacent corrugated plates.

[0012] Further, the dewatering assembly further comprises a fixed auger, which is fixedly arranged outside the connecting pipe and inside the straight cylinder. The fixed auger is coaxial with the connecting pipe, and the fixed auger is used to move the material along the direction from the second end to the first end of the tapered pipe.

[0013] The movable auger comprises at least two groups of spiral blades, the two groups of spiral blades are arranged in a staggered manner along the circumferential direction of the connecting pipe, and the blades of one group of spiral blades are arranged between the adjacent blades of the other group of spiral blades. A rubber layer is fixedly arranged on the side wall of the movable auger abutting against the rotary drum, and the rubber layer is deformable to adapt to the shape of the tapered pipe.

[0014] Further, the rotary speed of the rotary drum is greater than the rotary speed of the connecting pipe. The adjusting assembly comprises at least two adjusting units, each adjusting unit corresponding to one movable auger. Each adjusting unit comprises a limiting rod, a spring and an inclined block. The limiting rod and the inclined block are fixedly arranged on one of the opening plates.

[0015] The limiting rods are arranged along the axial direction of the connecting pipe. The movable auger is provided with a first arc slot, and each limiting rod is slidingly arranged in a first arc slot. The limiting rods drive the movable auger to rotate synchronously when the opening plate rotates. When the opening plate moves away from the axis of the connecting pipe, the limiting rods and the first arc slots cooperate with each other to drive the movable auger to rotate laggingly relative to the connecting pipe, thereby increasing the rotational speed difference between the movable auger and the rotating drum. The spring is sleeved on the limiting rod, and the spring connects the opening plate and the movable auger.

[0016] The inclined block is arranged to abut against the movable auger and to push the movable auger to move away from the opening plate when the opening plate moves away from the axis of the connecting pipe.

[0017] Further, the adjusting assembly further comprises a driving unit, and the driving unit comprises a first motor, a gear and a driving plate. The driving plate is rotationally arranged on the connecting pipe and coaxially arranged with the connecting pipe. The driving plate is provided with an arc-shaped rack.

[0018] Each opening plate is provided with a matching column. The driving plate is provided with a plurality of second arc slots, and each matching column is slidingly arranged in a second arc slot. When the driving plate rotates forward, the matching columns and the second arc slots cooperate with each other to move the opening plates away from the axis of the connecting pipe.

[0019] The first motor is arranged on the connecting pipe, the gear is fixedly arranged on the output shaft of the first motor and coaxially arranged with the output shaft of the first motor. The gear is engaged with the arc-shaped rack.

[0020] Further, the high-efficiency sludge centrifugal dewatering treatment system further comprises a first sensor, a second sensor and a controller. The first sensor is arranged in the straight cylinder and is used to detect the viscosity of the liquid and the specific gravity of the solid. The second sensor is arranged in the conical pipe and is used to detect the blockage of the slag discharge port.

[0021] The controller is arranged on the first motor. When the first sensor detects that the viscosity value of the liquid is higher than a first preset threshold value or the specific gravity value of the solid is lower than a second preset threshold value, the controller controls the first motor to rotate by a first preset angle, so that the opening plate moves away from the axis of the connecting pipe to a first preset position.

[0022] When the second sensor detects that the slag discharge port is blocked, the controller controls the first motor to rotate by a second preset angle, so that the opening plate moves away from the axis of the connecting pipe to a second preset position. The distance between the second preset position and the axis of the connecting pipe is greater than the distance between the first preset position and the axis of the connecting pipe. The greater the displacement of the opening plate moving to the second preset position, the higher the rotating speed of the first motor controlled by the controller.

[0023] Further, the efficient sludge centrifugal dewatering treatment system further comprises a driving mechanism, which comprises a first driving assembly and a second driving assembly.

[0024] Further, the efficient sludge centrifugal dewatering treatment system further comprises a sewage collecting mechanism, which comprises a sewage pool and a sewage collecting tank. The sewage collecting tank is communicated with the liquid outlet to collect sewage. The sewage pool is communicated with the sewage collecting tank to treat the sewage.

[0025] An efficient sludge centrifugal dewatering treatment method utilizes an efficient sludge centrifugal dewatering treatment system, and comprises the following steps.

[0026] S1, in the initial state, the dewatering mechanism is in the first state, the drum and the connecting pipe rotate in the same direction and have a differential speed.

[0027] S2, the connecting pipe drives the movable auger to rotate synchronously through the opening plate and the adjusting assembly. The movable auger moves the material along the direction from the second end to the first end of the tapered pipe.

[0028] S3, when it is needed to discharge the material in the drum as soon as possible, the dewatering mechanism is in the second state, the opening plate moves away from the axis of the connecting pipe, the differential speed between the movable auger and the drum gradually increases, and the displacement of the movable auger towards the first end of the tapered pipe gradually increases.

[0029] The efficient sludge centrifugal dewatering treatment system of the application has the following beneficial effects. In the initial state, the dewatering mechanism is in the first state, the drum and the connecting pipe rotate in the same direction and have a differential speed. The connecting pipe drives the movable auger to rotate synchronously through the opening plate and the adjusting assembly. The movable auger moves the material along the direction from the second end to the first end of the tapered pipe.

[0030] When the drum is blocked, it is needed to discharge the material in the drum as soon as possible. The dewatering mechanism is in the second state. The opening plate moves away from the axis of the connecting pipe, the differential speed between the movable auger and the drum gradually increases, a greater torque is generated to actively push the blocked material outward. The displacement of the movable auger towards the first end of the tapered pipe gradually increases to discharge the material more quickly.

[0031] Meanwhile, the radially expanded opening plate constitutes a barrier to effectively prevent the material from flowing back when the movable auger pushes the material. The efficient sludge centrifugal dewatering treatment system efficiently solves the blocking problem without affecting the normal separation effect of the material in the straight cylinder section, realizes continuous operation without shutdown, and significantly improves the operation efficiency and treatment capacity of the dewatering equipment. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0033] Figure 1 Part structure schematic diagram of a high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application;

[0034] Figure 2 Side view of a high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application;

[0035] Figure 3 Figure 2 Cross-sectional view in A-A direction;

[0036] Figure 4 Structure schematic diagram of a high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application after removing the shell;

[0037] Figure 5 Front view of a high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application after removing the shell;

[0038] Figure 6 Figure 5 Cross-sectional view in B-B direction;

[0039] Figure 7 Structure schematic diagram of a connecting pipe and a dewatering mechanism of a high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application;

[0040] Figure 8 Figure 7 Cross-sectional view in C-C direction;

[0041] Figure 9 Figure 8 Enlarged view of D;

[0042] Figure 10 Exploded view of a connecting pipe and a dewatering mechanism of a high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application;

[0043] Figure 11 Figure 10 Enlarged view of E;

[0044] Figure 12 Figure 10 Enlarged view of F;

[0045] ​​​​​​Figure 13 As Figure 10 Enlarged view at G.

[0046] Figure 14 Structure diagram of another part of a high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application.

[0047] In the figure: 100, main motor; 101, first belt; 102, first transmission wheel; 103, auxiliary motor; 104, second belt; 105, second transmission wheel; 106, differential; 200, shell; 210, conical tube; 220, straight cylinder; 301, slag discharge port; 302, liquid outlet; 303, feeding pipeline; 310, connecting pipe; 311, storage cavity; 312, fixed auger; 313, movable auger; 3131, first arc groove; 321, opening plate; 3211, limiting rod; 3212, inclined block; 3213, matching block; 3214, matching column; 322, spring; 323, support plate; 3231, first sliding groove; 324, driving plate; 3241, second arc groove; 3242, arc-shaped rack; 325, first motor; 326, gear; 327, corrugated plate; 400, sewage pool; 500, telescopic baffle; 600, sewage collection tank. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0049] Referring to Figures 1 to 14 As shown in the figure, the high-efficiency sludge centrifugal dewatering treatment system provided by the embodiment of the present application comprises a shell 200, a rotating drum, a connecting pipe 310 and a dewatering mechanism. The rotating drum is horizontally arranged and rotationally arranged on the shell 200. The connecting pipe 310 is arranged in the rotating drum and coaxial with the rotating drum. The rotating drum and the connecting pipe 310 rotate in the same direction and have a differential speed. The rotating drum comprises a conical tube 210 and a straight cylinder 220 which are in communication with each other. The conical tube 210 has a first end and a second end at two ends thereof, the diameter of the first end is smaller than the diameter of the second end, and the second end of the conical tube 210 is connected with the straight cylinder 220.

[0050] The dewatering mechanism comprises a dewatering assembly and an adjusting assembly. The dewatering assembly comprises a movable screw 313 and a plurality of flaring plates 321. The movable screw 313 is arranged outside the connecting pipe 310 and coaxially in the conical pipe 210. The movable screw 313 is capable of moving along the axial direction of the connecting pipe 310. The movable screw 313 is used to move the material along the direction from the second end to the first end of the conical pipe 210. The diameter of the movable screw 313 gradually decreases along the direction from the second end to the first end of the conical pipe 210.

[0051] The flaring plates 321 are arranged outside the connecting pipe 310 and slide along the radial direction of the connecting pipe 310. The flaring plates 321 rotate synchronously with the connecting pipe 310. The flaring plates 321 are arranged at the joint of the conical pipe 210 and the straight cylinder 220. The flaring plates 321 are distributed along the circumferential direction of the connecting pipe 310.

[0052] The dewatering mechanism has a first state and a second state. In the first state, the flaring plates 321 drive the movable screw 313 to rotate synchronously by the adjusting assembly. In the second state, the flaring plates 321 move, the adjusting assembly drives the movable screw 313 to rotate relative to the connecting pipe 310 and move along the axial direction of the connecting pipe 310. The farther the flaring plates 321 are away from the axis of the connecting pipe 310, the greater the differential speed between the movable screw 313 and the rotating drum, and the greater the displacement of the end of the movable screw 313 close to the flaring plates 321 towards the first end of the conical pipe 210, and the faster the material is discharged from the rotating drum.

[0053] In the initial state, the dewatering mechanism is in the first state, the rotating drum and the connecting pipe 310 rotate in the same direction and have a differential speed. The connecting pipe 310 drives the movable screw 313 to rotate synchronously by the adjusting assembly. The movable screw 313 moves the material along the direction from the second end to the first end of the conical pipe 210.

[0054] When the rotating drum is blocked, the material in the rotating drum needs to be discharged as soon as possible. The flaring plates 321 move away from the axis of the connecting pipe 310, the differential speed between the movable screw 313 and the rotating drum gradually increases, and the greater torque generated can actively push the blocked material outwards. Moreover, the displacement of the end of the movable screw 313 close to the flaring plates 321 towards the first end of the conical pipe 210 gradually increases, which can discharge the material more quickly.

[0055] At the same time, the radially expanded flaring plates 321 form a barrier, which can effectively prevent the material from flowing back when the movable screw 313 pushes the material, thereby more effectively solving the blocking problem without affecting the separation effect of the material in the straight cylinder 220.

[0056] In the embodiment, the shell 200 is provided with a plurality of slag discharge ports 301, and the straight cylinder 220 is provided with a plurality of liquid outlets 302 at the end away from the tapered tube 210. The plurality of liquid outlets 302 and the plurality of slag discharge ports 301 are sequentially distributed along the circumference of the connecting pipe 310. The slag discharge port 301 is at the first end of the tapered tube 210 and communicates with the tapered tube 210. The connecting pipe 310 is provided with a storage cavity 311 inside, and the storage cavity 311 is in the straight cylinder 220 and communicates with the straight cylinder 220. The connecting pipe 310 is provided with a feeding pipe 303, and the feeding pipe 303 communicates with the storage cavity 311.

[0057] The material is sent into the storage cavity 311 through the feeding pipe 303 and then into the straight cylinder 220. When the connecting pipe 310 rotates, under the action of centrifugal force, the material in the rotating drum forms a solid ring layer abutting against the inner wall of the rotating drum and a liquid ring layer inside the solid ring layer. The shell 200 is provided with a plurality of telescopic baffles 500 along the radial direction of the connecting pipe 310, and each telescopic baffle 500 is on the side of the liquid outlet 302 away from the axis of the connecting pipe 310. When the telescopic baffle 500 gradually extends, the telescopic baffle 500 gradually approaches the axis of the connecting pipe 310, so that the thickness of the liquid ring layer along the radial direction of the connecting pipe 310 increases.

[0058] When the viscosity value of the liquid in the straight cylinder 220 is higher than the first preset threshold value or the specific gravity value of the solid is lower than the second preset threshold value, the dehydration mechanism is in the second state, and at the same time, the telescopic baffle 500 extends, the telescopic baffle 500 gradually approaches the axis of the connecting pipe 310, so that the thickness of the liquid ring layer along the radial direction of the connecting pipe 310 increases, thereby prolonging the separation time of the material in the straight cylinder 220 and improving the separation effect of the solid-liquid. In addition, the reduction of the flow area also produces a squeezing effect on the material, further strengthening the solid-liquid separation.

[0059] In the embodiment, the connecting pipe 310 is fixedly provided with a support plate 323, and the support plate 323 is in the straight cylinder 220. The support plate 323 is provided with a plurality of first sliding grooves 3231, and the plurality of first sliding grooves 3231 are sequentially distributed along the circumference of the connecting pipe 310. Each first sliding groove 3231 is arranged along the radial direction of the connecting pipe 310. Each opening plate 321 is fixedly provided with a matching block 3213 on the side close to the support plate 323, and each matching block 3213 is slidingly arranged in a first sliding groove 3231.

[0060] The dehydration assembly further comprises a plurality of corrugated plates 327, each corrugated plate 327 connects two adjacent opening plates 321, and is used for plugging the gap between the two adjacent corrugated plates 327 to prevent the material from passing between the two corrugated plates 327. The corrugated plate 327 can be telescoped along the tangential direction of the connecting pipe 310.

[0061] In the embodiment, the dewatering assembly further comprises a fixed auger 312 fixedly arranged outside the connecting pipe 310 and inside the straight cylinder 220. The fixed auger 312 is coaxially arranged with the connecting pipe 310, and is used to move the material in the direction from the second end to the first end of the conical pipe 210.

[0062] The movable auger 313 comprises at least two groups of helical blades, which are arranged in a staggered manner along the circumference of the connecting pipe 310, and the blades of one group of helical blades are between the adjacent blades of another group of helical blades. A plurality of helical blades are arranged to reduce the pressure borne by the movable auger 313 during discharging and further reduce the deformation of the movable auger 313.

[0063] The side wall of the movable auger 313 abutting against the rotating drum is fixedly provided with a rubber layer which can be deformed. The rubber layer is provided with an inclined surface which gradually approaches the axis of the connecting pipe 310 in the direction from the first end to the second end of the connecting pipe 310. When the end of the movable auger 313 close to the opening plate 321 approaches the first end of the conical pipe 210, the rubber layer is compressed to adapt to the gradually decreasing diameter of the conical pipe 210. Under the action of the inclined surface, the rubber layer is prevented from tilting towards the second end of the conical pipe 210 to cause a gap during movement of the movable auger 313, thereby preventing backflow of the material. The axial movement of the movable auger 313 is short-stroke movement rather than long-distance conveying, and is only used for loosening partial blockage.

[0064] In the embodiment, the rotating speed of the rotating drum is greater than the rotating speed of the connecting pipe 310. The adjusting assembly comprises at least two adjusting units, each adjusting unit corresponding to one movable auger 313. Each adjusting unit comprises a limiting rod 3211, a spring 322 and an inclined block 3212. The limiting rod 3211 and the inclined block 3212 are fixedly arranged on one side of one opening plate 321 close to the movable auger 313.

[0065] The limiting rod 3211 is arranged in the axial direction of the connecting pipe 310. The movable auger 313 is provided with a first arc groove 3131 which gradually approaches the axis of the movable auger 313 in the rotating direction of the movable auger 313. Each limiting rod 3211 is slidingly arranged in one first arc groove 3131. The opening plate 321 drives the movable auger 313 to synchronously rotate through the limiting rod 3211 when the opening plate 321 rotates. When the opening plate 321 moves away from the axis of the connecting pipe 310, the limiting rod 3211 and the first arc groove 3131 cooperate to drive the movable auger 313 to produce a lagging rotation relative to the connecting pipe 310, thereby increasing the rotating speed difference between the movable auger 313 and the rotating drum. The spring 322 is sleeved on the limiting rod 3211, and the spring 322 connects the opening plate 321 and the movable auger 313.

[0066] The inclined blocks 3212 gradually move away from the axis of the connecting pipe 310 along the direction from the first end to the second end of the conical pipe 210. The inclined blocks 3212 are used to abut against the movable screw 313 and push the movable screw 313 to move away from the opening plate 321 when the opening plate 321 moves away from the axis of the connecting pipe 310.

[0067] In the embodiment, the adjusting assembly further comprises a driving unit, which comprises a first motor 325, a gear 326 and a driving plate 324. The driving plate 324 is located on the side of the opening plate 321 close to the conical pipe 210. The driving plate 324 is rotationally arranged on the connecting pipe 310 and coaxially arranged with the connecting pipe 310. The driving plate 324 is provided with an arc-shaped rack 3242.

[0068] Each opening plate 321 is fixedly provided with a matching column 3214 on the side close to the movable screw 313. The driving plate 324 is provided with a plurality of second arc grooves 3241, which are sequentially distributed along the circumference of the connecting pipe 310. Each matching column 3214 is slidingly arranged in one second arc groove 3241. When the driving plate 324 rotates forward, the opening plate 321 moves away from the axis of the connecting pipe 310 through the cooperation of the matching column 3214 and the second arc groove 3241.

[0069] The first motor 325 is fixedly arranged on the connecting pipe 310, and the gear 326 is fixedly arranged on the output shaft of the first motor 325 and coaxially arranged with the output shaft of the first motor 325. The gear 326 is engaged with the arc-shaped rack 3242.

[0070] In the embodiment, the high-efficiency sludge centrifugal dewatering treatment system further comprises a first sensor, a second sensor and a controller. The first sensor is arranged in the straight cylinder 220 and used to detect the viscosity of the liquid and the specific gravity of the solid. The second sensor is arranged in the conical pipe 210 and used to detect the blockage of the slag discharge port 301.

[0071] The controller is arranged on the first motor 325. When the first sensor detects that the viscosity of the liquid is higher than a first preset threshold value or the specific gravity of the solid is lower than a second preset threshold value, the controller controls the first motor 325 to rotate by a first preset angle, so that the opening plate 321 moves away from the axis of the connecting pipe 310 to a first preset position.

[0072] When the second sensor detects that the slagging-off port 301 is blocked, the controller controls the first motor 325 to rotate by a second preset angle, so that the opening plate 321 moves to a second preset position away from the axis of the connecting pipe 310. The distance between the second preset position and the axis of the connecting pipe 310 is greater than the distance between the first preset position and the axis of the connecting pipe 310, and the greater the displacement of the opening plate 321 moving to the second preset position, the higher the speed of the first motor 325 controlled by the controller.

[0073] In the embodiment, the efficient sludge centrifugal dewatering treatment system further comprises a driving mechanism, which comprises a first driving assembly and a second driving assembly. The first driving assembly comprises a main motor 100, a first belt 101 and a first transmission wheel 102. The main motor 100 is fixedly arranged on the shell 200, and a first driving wheel is fixedly arranged on the output shaft of the main motor 100. The first transmission wheel 102 is fixedly arranged on the connecting pipe 310 and coaxially arranged with the connecting pipe 310. The first belt 101 connects the first driving wheel and the first transmission wheel 102.

[0074] The second driving assembly comprises an auxiliary motor 103, a differential 106, a second belt 104 and a second transmission wheel 105. The auxiliary motor 103 is fixedly arranged on the shell 200, and a second driving wheel is arranged on the output shaft of the auxiliary motor 103. A rotating shaft is coaxially arranged on the straight cylinder 220, and the differential 106 is arranged on the shell 200 and connected with the rotating shaft. The second transmission wheel 105 is fixedly arranged on the output shaft of the differential 106 coaxially, and the second belt 104 connects the second driving wheel and the second transmission wheel 105.

[0075] In the embodiment, the efficient sludge centrifugal dewatering treatment system further comprises a sewage collecting mechanism, which comprises a sewage pool 400 and a sewage collecting tank 600. The sewage collecting tank 600 is communicated with the liquid outlet 302 for collecting sewage. The sewage pool 400 is communicated with the sewage collecting tank 600 for treating the sewage.

[0076] An efficient sludge centrifugal dewatering treatment method utilizes an efficient sludge centrifugal dewatering treatment system, which comprises the following steps:

[0077] S1, in the initial state, the dewatering mechanism is in the first state. The distance between the opening plate 321 and the inner wall of the rotating drum is maximum.

[0078] The main motor 100 is started, and the main motor 100 drives the first transmission wheel 102 to rotate through the first belt 101, and then drives the connecting pipe 310 to rotate. The auxiliary motor 103 is started, and the auxiliary motor 103 drives the second transmission wheel 105 to rotate through the second belt 104, and then drives the rotating drum to rotate, and the rotating speed of the rotating drum is greater than the rotating speed of the connecting pipe 310.

[0079] S2, when the connecting pipe 310 rotates, the plurality of flared plates 321 and the connecting pipe 310 rotate synchronously under the cooperation of the cooperating blocks 3213 and the first sliding grooves 3231. Under the cooperation of the limiting rods 3211 and the first arc grooves 3131, the flared plates 321 drive the movable auger 313 to rotate synchronously. The connecting pipe 310 drives the fixed auger 312 to rotate synchronously. The fixed auger 312 and the movable auger 313 rotate relative to the rotating drum, and the fixed auger 312 and the movable auger 313 push the material to move from the second end of the tapered pipe 210 to the first end.

[0080] The material is sent into the storage cavity 311 through the feed pipe 303 and then into the straight cylinder 220. Under the action of centrifugal force, the solids and liquids in the sludge are separated, the material in the rotating drum forms a solid ring layer abutting against the inner wall of the rotating drum, and a liquid ring layer abutting against the solid ring layer.

[0081] The solid material in the straight cylinder 220 is pushed into the tapered pipe 210 by the fixed auger 312, and the material in the tapered pipe 210 is gradually pushed close to the slag discharge port 301 at the first end of the tapered pipe 210 by the movable auger 313. The liquid in the rotating drum is discharged outward from the liquid outlet 302.

[0082] After a period of operation, if it is observed that the moisture content of the discharged solid material is higher than the preset value, the following two situations may exist: one is that the liquid ring layer is too thick and the moisture content is too large, at this time the telescopic baffle 500 should be shortened, and the telescopic baffle 500 gradually moves away from the axis of the connecting pipe 310, thereby reducing the thickness of the liquid ring layer along the radial direction of the connecting pipe 310, increasing the effective flow area of the liquid outlet 302, and accelerating the discharge of the liquid.

[0083] The second situation is that the viscosity value of the liquid is higher than the first preset threshold value or the specific gravity value of the solid is lower than the second preset threshold value. The smaller the specific gravity of the solid, the more difficult it is for the material to be centrifuged, and the more difficult it is for the solid-liquid separation. The larger the viscosity of the liquid, the greater the resistance of the liquid, and the more difficult it is for the solid-liquid separation.

[0084] When the first sensor detects that the viscosity value of the liquid in the straight cylinder 220 is higher than the first preset threshold value or the specific gravity value of the solid is lower than the second preset threshold value, the controller drives the first motor 325 to rotate forward by a first preset angle. The first motor 325 drives the gear 326 to rotate, and in turn drives the driving plate 324 to rotate forward, and in turn, through the cooperation of the matching column 3214 and the second arc groove 3241, the opening plate 321 moves to a first preset position away from the axis of the connecting pipe 310. The flow area between the opening plate 321 and the rotating drum gradually decreases, limiting the transport of solids and liquids to the conical pipe 210. At the same time, the telescopic baffle 500 is extended, and the telescopic baffle 500 gradually approaches the axis of the connecting pipe 310, thereby increasing the thickness of the liquid ring layer along the radial direction of the connecting pipe 310, thereby prolonging the separation time of the material in the straight cylinder 220 and improving the separation effect of the solid-liquid. Moreover, the greater the viscosity value of the liquid in the material, the more the opening plate 321 moves away from the axial direction of the connecting pipe 310 to adapt to the separation of different materials. In addition, the reduction of the flow area also exerts a squeezing effect on the material, further enhancing the solid-liquid separation. At this time, the dehydration mechanism enters the second state.

[0085] After the opening plate 321 moves to the first preset position, the first motor 325 no longer rotates, and the opening plate 321 no longer moves, and the dehydration mechanism returns to the first state to continue separating the material.

[0086] S3, when the second sensor detects that the slag outlet 301 is blocked, the controller drives the first motor 325 to rotate forward by a second preset angle, so that the opening plate 321 moves to a second preset position away from the axis of the connecting pipe 310. The second preset position is the limit position of the opening plate 321 moving away from the axis of the connecting pipe 310.

[0087] When the opening plate 321 moves, the limiting rod 3211 and the first arc groove 3131 cooperate with each other to make the movable auger 313 rotate in the opposite direction of the connecting pipe 310, thereby reducing the speed of the movable auger 313 and the connecting pipe 310 rotating in the same direction, thereby increasing the differential speed between the rotating drum and the movable auger 313, and the greater torque generated can actively push the blocked material out of the slag outlet 301. At the same time, the radially expanded opening plate 321 forms a barrier that effectively prevents material from flowing back when the movable auger 313 pushes the material, thereby more effectively solving the blocking problem without affecting the separation effect of the material in the straight cylinder 220.

[0088] Moreover, when the opening plate 321 moves away from the axis of the connecting pipe 310, the inclined block 3212 will push the movable auger 313 away from the opening plate 321, thereby pushing the material out more quickly.

[0089] Afterwards, when the slag discharge port 301 is no longer blocked, the controller controls the first motor 325 to rotate in the opposite direction, and under the action of the spring 322, the movable auger 313 is reset.

[0090] There are two paths for the opening plate 321 to move to the second preset position: one is to move directly from the initial state (first state) to the second preset position to handle sudden blockage. The other is to first move from the initial state to the first preset position to optimize separation, and then move to the second preset position due to continuous blockage.

[0091] In the second path, the closer the first preset position of the opening plate 321 is to the axis of the connecting pipe 310, that is, the smaller the opening degree of the opening plate 321, the more liquid enters into the tapered pipe 210. At the same time, the axial movement distance of the movable auger 313 is also greater, which can discharge the material more quickly.

[0092] The longer the distance that the opening plate 321 travels from the first preset position to the second preset position, the faster the controller controls the first motor 325 to ensure that the opening plate 321 quickly forms a barrier at the fastest speed to prevent material backflow.

[0093] Conversely, the further the first preset position of the opening plate 321 is from the axis of the connecting pipe 310, the greater the degree of opening of the opening plate 321, the less liquid enters the tapered pipe 210, the more solid material, and the smaller the axial movement distance of the movable auger 313. The opening speed of the opening plate 321 controlled by the first motor 325 is also smaller, so as to avoid generating excessive reaction force due to pushing high solid content material, thereby protecting the movable auger 313 from damage.

[0094] The above description is only a preferred embodiment of the present invention and is 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 centrifugal dewatering treatment system, characterized in that: It includes an outer shell, a rotating drum, a connecting pipe, and a dewatering mechanism; the rotating drum is horizontally positioned and rotatably mounted on the outer shell; the connecting pipe is located inside the rotating drum and is coaxial with the rotating drum; the rotating drum and the connecting pipe rotate in the same direction, but with a differential speed; the rotating drum includes a tapered tube and a straight cylinder; the two ends of the tapered tube are a first end and a second end, respectively, the diameter of the first end is smaller than the diameter of the second end, and the second end of the tapered tube is connected to the straight cylinder; The dewatering mechanism includes a dewatering component and an adjusting component; the dewatering component includes a movable auger and multiple opening plates; the movable auger is rotatably disposed outside the connecting pipe and inside the conical pipe, and is coaxially disposed with the conical pipe; the movable auger can move along the axial direction of the connecting pipe; the movable auger is used to move the material along the direction from the second end to the first end of the conical pipe; The opening plate is slidably disposed on the outside of the connecting pipe along the radial direction of the connecting pipe, and the opening plate and the connecting pipe rotate synchronously; the opening plate is located at the connection between the tapered pipe and the straight cylinder, and multiple opening plates are distributed along the circumference of the connecting pipe; The dewatering mechanism has a first state and a second state. In the first state, the opening plate drives the movable auger to rotate synchronously through the adjusting component. In the second state, the opening plate moves, and the adjusting component drives the movable auger to rotate relative to the connecting pipe, and drives the movable auger to move along the axial direction of the connecting pipe. The further the opening plate is from the axis of the connecting pipe, the greater the speed difference between the movable auger and the drum. The greater the displacement of the end of the movable auger closest to the opening plate toward the first end of the conical pipe, the faster the material is discharged from the drum. A support plate is fixedly installed on the connecting pipe, and the support plate is located inside the straight cylinder; multiple first sliding grooves are opened on the support plate, and the multiple first sliding grooves are distributed sequentially along the circumference of the connecting pipe, and each first sliding groove is arranged along the radial direction of the connecting pipe; a mating block is fixedly installed on the side of each opening plate near the support plate, and each mating block is slidably arranged in a first sliding groove; The rotational speed of the drum is greater than that of the connecting pipe; the adjustment assembly includes at least two adjustment units, each corresponding to a movable auger; each adjustment unit includes a limiting rod, a spring, and a wedge block; the limiting rod and the wedge block are both fixedly mounted on one of the opening plates; The limiting rod is arranged along the axial direction of the connecting pipe; the movable auger is provided with a first arc groove, and each limiting rod is slidably arranged in a first arc groove; when the opening plate rotates, it drives the movable auger to rotate synchronously through the limiting rod; when the opening plate moves away from the axis of the connecting pipe, the limiting rod and the first arc groove cooperate with each other to drive the movable auger to produce a lag rotation relative to the connecting pipe, thereby increasing the speed difference between the movable auger and the drum; a spring is sleeved on the limiting rod, and the spring connects the opening plate and the movable auger; The inclined block is used to abut against the movable auger, and when the opening plate moves away from the axis of the connecting pipe, the inclined block pushes the movable auger to move away from the opening plate. The adjustment assembly also includes a drive unit, which includes a drive plate; the drive plate is rotatably mounted on the connecting pipe and is coaxial with the connecting pipe; an arc-shaped rack is provided on the drive plate; Each opening plate is provided with a mating post; the drive plate is provided with multiple second arc grooves, and each mating post is slidably disposed in a second arc groove; when the drive plate rotates in the forward direction, the opening plate moves away from the axis of the connecting pipe through the mutual cooperation of the mating post and the second arc groove.

2. The high-efficiency sludge centrifugal dewatering treatment system according to claim 1, characterized in that: The outer shell has a slag discharge port that communicates with the first end of the conical tube, and the straight cylinder has a liquid outlet at the end away from the conical tube; the connecting pipe has a storage chamber that communicates with the straight cylinder; the connecting pipe has a feed pipe that communicates with the storage chamber; the outer shell has a telescopic baffle that corresponds to the liquid outlet; as the telescopic baffle gradually extends, it gradually approaches the axis of the connecting pipe, which increases the thickness of the liquid layer along the radial direction of the connecting pipe.

3. The high-efficiency sludge centrifugal dewatering treatment system according to claim 1, characterized in that: The dewatering assembly also includes multiple corrugated plates, each corrugated plate connecting two adjacent open plates to seal the gap between the two adjacent corrugated plates.

4. The high-efficiency sludge centrifugal dewatering treatment system according to claim 2, characterized in that: The dewatering assembly also includes a fixed auger, which is fixedly installed on the outside of the connecting pipe and inside the straight cylinder; the fixed auger and the connecting pipe are coaxial, and the fixed auger is used to move the material in the direction from the second end to the first end of the conical tube; The movable auger includes at least two sets of spiral blades, which are arranged alternately along the circumference of the connecting pipe, and the blades of one set of spiral blades are located between adjacent blades of the other set of spiral blades; a rubber layer is fixedly provided on the side wall where the movable auger and the drum abut, and the rubber layer can be deformed to adapt to the shape of the tapered pipe.

5. The high-efficiency sludge centrifugal dewatering treatment system according to claim 4, characterized in that: The drive unit also includes a first motor and a gear; the first motor is mounted on the connecting pipe, and the gear is fixedly mounted on the output shaft of the first motor and is coaxial with the output shaft of the first motor; the gear meshes with the arc-shaped rack.

6. The high-efficiency sludge centrifugal dewatering treatment system according to claim 5, characterized in that: It also includes a first sensor, a second sensor, and a controller; the first sensor is installed inside the straight cylinder and is used to detect the viscosity of the liquid and the specific gravity of the solid; the second sensor is installed inside the conical tube and is used to detect the blockage of the slag discharge port. The controller is mounted on the first motor. When the first sensor detects that the viscosity of the liquid is higher than the first preset threshold or the specific gravity of the solid is lower than the second preset threshold, the controller controls the first motor to rotate by a first preset angle, thereby causing the opening plate to move away from the axis of the connecting pipe to the first preset position. When the second sensor detects blockage at the slag discharge port, the controller controls the first motor to rotate by a second preset angle, causing the opening plate to move away from the axis of the connecting pipe to a second preset position. The distance between the second preset position and the axis of the connecting pipe is greater than the distance between the first preset position and the axis of the connecting pipe. The greater the displacement of the opening plate to the second preset position, the higher the speed of the first motor controlled by the controller.

7. The high-efficiency sludge centrifugal dewatering treatment system according to claim 1, characterized in that: It also includes a drive mechanism, which includes a first drive assembly and a second drive assembly; the first drive assembly includes a main motor; the main motor is mounted on the housing and is used to drive the connecting pipe to rotate; The second drive assembly includes an auxiliary motor, which is mounted on the housing and is used to drive the drum to rotate.

8. The high-efficiency sludge centrifugal dewatering treatment system according to claim 2, characterized in that: It also includes a sewage collection system, which consists of a sewage tank and a sewage collection vessel; the sewage collection vessel is connected to an outlet for collecting sewage; the sewage tank and the sewage collection vessel are connected for treating sewage.

9. A method for efficient sludge centrifugal dewatering, utilizing the efficient sludge centrifugal dewatering system according to any one of claims 1-8, characterized in that, Includes the following steps: S1, In the initial state, the dehydration mechanism is in the first state, the drum and the connecting pipe rotate in the same direction, and there is a speed difference between the two; S2, the connecting pipe drives the movable auger to rotate synchronously through the opening plate and the adjusting component; the movable auger causes the material to move along the direction from the second end to the first end of the conical tube; S3, when it is necessary to discharge the material in the drum as soon as possible, the dewatering mechanism is in the second state, the opening plate moves away from the axis of the connecting pipe, the differential speed between the movable auger and the drum gradually increases, and the displacement of the movable auger toward the first end of the tapered tube increases step by step.

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