A dewatering press for sludge disposal

Abstract

The application discloses a sludge disposal dewatering press, and relates to the technical field of dewatering presses, which comprises a bottom plate, two groups of supports are symmetrically arranged on the surface of the bottom plate, electric rollers are arranged on the two groups of supports, a conveying belt is transmissionally connected between the electric rollers on the two sides, electromagnets are embedded in the surface of the conveying belt at equal intervals, a supporting frame is arranged on the surface of the bottom plate, a first electric push rod is arranged on the top of the supporting frame, the sludge can be secondarily treated, the secondary use efficiency of the sludge is greatly affected, the treatment effect of the dewatering press on the sludge is reduced, and the existing part of the dewatering press is blocked due to the high viscosity of the sludge, the pores of parts are prone to be blocked, manual cleaning needs to be frequently performed, the efficiency is low, and the dewatering effect and the dewatering efficiency are seriously affected.

Description

Technical Field

[0001] This invention relates to the field of dewatering press technology, and more particularly to a dewatering press for sludge treatment. Background Technology

[0002] The dewatering press, also known as a disc screw sludge dewatering machine, is an important piece of mechanical equipment for sludge dewatering. In the thickening section, the sludge is concentrated by gravity and then transported to the dewatering section. As it moves forward, the filter gaps and screw pitch gradually decrease, and the back pressure plate acts as a barrier, generating great internal pressure and continuously reducing the volume to achieve thorough dewatering.

[0003] In some existing technical solutions, sludge is directly discharged through the sludge discharge hopper without secondary treatment. Since the squeezed sludge still contains a large amount of water, the lack of secondary dewatering treatment will greatly affect the efficiency of sludge reuse, thereby reducing the treatment effect of the dewatering press. Furthermore, in some existing dewatering presses, due to the high viscosity of the sludge, the pores in the components are prone to clogging, requiring frequent manual cleaning, which is inefficient and seriously affects the dewatering effect and efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the discharged sludge cannot be dewatered a second time, resulting in a high water content in the sludge that makes it difficult to reuse. Therefore, this invention proposes a dewatering press for sludge treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dewatering press for sludge treatment, comprising a base plate, two sets of supports symmetrically arranged on one side of the surface of the base plate, each set of supports being provided with an electric roller, a conveyor belt being driven between the electric rollers on both sides, and electromagnets being embedded at equal intervals in the middle of the surface of the conveyor belt.

[0006] The base plate has a support frame on its surface, a first electric push rod on the top of the support frame, a heating cover on the telescopic end of the first electric push rod, a collection box in the middle of the base plate, a hoist tube on the top of the collection box, a second electric push rod inside the hoist tube, a tapered column on the telescopic end of the second electric push rod, and a pressure plate slidingly fitted on the inner side of the collection box.

[0007] The bottom surface of the collection box is provided with a support frame fixedly connected to the surface of the base plate. Two opposite inner sides of the support frame are provided with guide grooves. Guide rods are provided in the guide grooves. A transmission plate is slidably connected between the two inner sides of the support frame. The two ends of the transmission plate are respectively movably sleeved on the guide rods on both sides. A transmission spring is sleeved on the guide rod. The two ends of the transmission spring are fixedly connected to the side of the transmission plate and the end face of the guide groove, respectively. A push rod is provided on the side of the transmission plate. A metal seat is provided at one end of the push rod. A brush that fits against the conveyor belt is provided on the side of the metal seat.

[0008] Preferably, a baffle is rotatably connected to the side of the support frame away from the conveyor belt, the bottom of the baffle is set as an arc surface structure, an opening and closing motor is provided on the side of the support frame, the output shaft of the opening and closing motor passes through the side of the support frame and is fixedly connected to the top end face of the baffle, and ventilation holes are opened on the surface of the conveyor belt.

[0009] Preferably, a pressure-bearing frame is provided between the upper and lower sides of the inside of the conveyor belt. The surface of the pressure-bearing frame is in contact with the inner surface of the conveyor belt. An air guide pipe is connected to the side of the pressure-bearing frame. Two stabilizing frames are provided on both sides of the pressure-bearing frame. The bottom surface of the stabilizing frame is fixedly connected to the surface of the base plate.

[0010] Preferably, the heating cover has hollow inserts evenly distributed on its inner top surface, and a second heating wire is provided inside the inserts. The heating cover also has exhaust holes on its side and top surfaces.

[0011] Preferably, a hot air blower is provided on the other side of the surface of the base plate, and a pressure sensor is provided at the output port of the hot air blower. The output port of the hot air blower is connected to the end of the air guide pipe.

[0012] Preferably, a detection tube is provided on the bottom side of the collection box, and a gas flow sensor is provided on the detection tube.

[0013] Preferably, the top surface of the collection box is provided with a U-shaped frame, the top of the U-shaped frame extends through both sides of the top of the hoist tube, the upper surface of the U-shaped frame has a triangular cross-section, and the top of the U-shaped frame is fixedly connected to the top of the second electric push rod.

[0014] Preferably, the bottom of the collection box near the conveyor belt is hinged with a sealing door, and rotating frames are provided on both sides of the sealing door. A third electric push rod is rotatably connected to both sides of the collection box, and the telescopic ends of the third electric push rods on both sides are fixedly connected to the rotating frames on both sides respectively.

[0015] Preferably, a circular feed inlet corresponding to the conical column is provided at the center of the pressure plate. The radius of the conical column is larger than the radius of the circular feed inlet. Compression springs are vertically provided at the four right angles of the surface of the pressure plate. The top of the compression springs penetrates the top surface of the collection box. A fixing frame is provided at the top of the compression springs. The bottom surface of the fixing frame is fixedly connected to the surface of the collection box. Each compression spring has a telescopic rod inside. The telescopic end of the telescopic rod is fixedly connected to the inner top surface of the fixing frame. The bottom end of the telescopic rod is fixedly connected to the surface of the pressure plate.

[0016] Preferably, a push plate is slidably fitted inside the collection box on the side away from the sealing door, a connecting frame is provided on the side of the collection box, a hydraulic rod is provided on the inner side of the connecting frame, and the telescopic end of the hydraulic rod is fixedly connected to the side of the push plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention utilizes a pressure plate to press and dehydrate sludge, and then uses a hot airflow generated by a hot air blower to deliver the hot airflow through the air guide pipe 9 to the pressure frame 5 to heat the sludge blocks on the conveyor belt. This, in conjunction with the second heating wire 14 inside the insert rod 13, achieves rapid dehydration and drying of the sludge.

[0019] When the drain hole at the bottom of the collection box is blocked, and when the sealing door and push plate are in the initial state, the present invention can use the second electric rod to drive the pressure plate to move, and use the flowing air to clean the drain hole at the bottom of the collection box, so that the sewage and sludge produced by pressing can be discharged through the drain hole, thereby improving the pressing and dehydration effect.

[0020] When the vent holes on the conveyor belt become blocked, and the collection box and the support frame are in a closed state, the present invention can use the second electric rod to drive the pressure plate to reciprocate, and use the airflow to drive the transmission plate to move, thereby using the brush to clear the blockage of the vent holes and clean the sludge attached to the surface of the conveyor belt.

[0021] By using the attraction between an electromagnet and a metal base, and when the baffle is tilted, the reciprocating motion of the transmission plate is achieved by the operation of the conveyor belt, thereby pushing out the sludge attached to the bottom of the support frame. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the conveyor belt, i.e., the support frame, structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the heating cover structure of the present invention;

[0025] Figure 4This is a schematic diagram of the collection box structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the pressure plate structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the pusher plate structure of the present invention;

[0028] Figure 7 This is a schematic cross-sectional view of the support frame structure of the present invention.

[0029] In the diagram: 1. Base plate; 2. Conveyor belt; 201. Electromagnet; 3. Vent hole; 4. Electric roller; 5. Pressure frame; 6. Hot air blower; 601. Pressure sensor; 9. Air guide pipe; 10. Support frame; 11. First electric push rod; 12. Heating cover; 13. Insert rod; 14. Second heating wire; 15. Collection box; 1501. Detection tube; 1502. Gas flow sensor; 16. Hoist tube; 17. Second electric push rod; 18. Conical column; 19. Pressure plate; 20. 2601. Compression spring; 2602. Fixed frame; 2603. Stabilizing frame; 2604. Bearing frame; 2605. Guide groove; 2606. Guide rod; 2607. Transmission plate; 2608. Transmission spring; 2609. Baffle; 26000. Opening and closing motor; 26000. Push rod; 26001. Metal seat; 26002. Brush; 2601. U-shaped frame; 2602. Sealing door; 2603. Rotating frame; 2604. Third electric push rod; 2605. Telescopic rod; 2606. Push plate; 2607. Connecting frame; 2608. Hydraulic rod. Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] A typical sludge treatment system includes a sludge receiving system, a cavitation cell-breaking system, a mechanical dewatering system, a sludge drying system, a sludge incineration system, a heat exchange system, and an electrical control system. During the sludge treatment process, the sludge is first discharged into a receiving hopper. A conveyor and elevator then transport the sludge to a cavitation cell-breaking machine for cell-breaking treatment. After cell-breaking, the sludge is transferred to a conditioning storage tank. Next, the sludge is sequentially transferred to a filter press or dewatering press and a dryer for dewatering. After dewatering, it is sent to an incinerator for incineration, where the heat energy is converted into electrical energy by a generator. Additionally, some of the heat generated in the incinerator is transferred to the dryer to dry the sludge, achieving energy conservation and environmental protection. Finally, residual flue gas is discharged through a chimney via a heat exchange system.

[0033] The mechanical dewatering systems in some existing sludge treatment systems still have some defects. Therefore, the present invention provides a dewatering press for sludge treatment, which is mainly an improvement solution based on the problems faced by the mechanical dewatering systems in sludge treatment systems in actual use.

[0034] First embodiment:

[0035] Reference Figure 1-6 A dewatering press for sludge treatment includes a base plate 1. Two sets of supports are symmetrically arranged on one side of the surface of the base plate 1. Each set of supports is equipped with an electric roller 4. A conveyor belt 2 is connected between the two electric rollers 4. The surface of the conveyor belt 2 is provided with ventilation holes 3. Specifically, the operation of the conveyor belt 2 is achieved by rotating the electric rollers 4.

[0036] The surface of the base plate 1 is provided with a support frame 10, the top of the support frame 10 is provided with a first electric push rod 11, the telescopic end of the first electric push rod 11 is provided with a heating cover 12, the inner top surface of the heating cover 12 is uniformly provided with hollow insert rods 13, the inside of the insert rods 13 is provided with a second electric heating wire 14, and the sides and top surface of the heating cover 12 are provided with exhaust holes.

[0037] Specifically, after the sludge blocks are pressed, they are sent to the conveyor belt 2. The first electric push rod 11 drives the heating cover 12 to cover the sludge blocks. At the same time, the insertion rod 13 is inserted into the sludge blocks. The second electric heating wire 14 can heat the inside of the sludge blocks. The generated water vapor is discharged through the exhaust holes on the side and top of the heating cover 12. At the same time, the hot air blower 6 and the air guide pipe 9 are used to heat, dry and dehydrate the sludge blocks through the air vents 3.

[0038] A collection box 15 is provided in the middle of the surface of the base plate 1. A drain hole is provided on the bottom surface of the collection box 15. A bearing frame 26 is fixedly connected to the surface of the base plate 1 on the bottom surface of the collection box 15. A hoist tube 16 is provided on the top of the collection box 15. A second electric push rod 17 is provided inside the hoist tube 16. A conical column 18 is provided at the telescopic end of the second electric push rod 17. A pressure plate 19 is slidably fitted on the inner side of the collection box 15. A circular feed port corresponding to the conical column 18 is provided at the center of the pressure plate 19. The radius of the conical column 18 is larger than the radius of the circular feed port. A U-shaped frame 29 is provided on the top surface of the collection box 15. The top of the U-shaped frame 29 passes through the top two sides of the hoist tube 16. The cross-section of the upper surface of the U-shaped frame 29 is triangular. The top of the U-shaped frame 29 is fixedly connected to the top of the second electric push rod 17.

[0039] Specifically, after the sludge is injected from the top of the gourd pipe 16, it enters the bottom of the pressure plate 19 through the circular feed port. After the injection is completed, the second electric push rod 17 drives the conical column 18 to move downward. Since the radius of the conical column 18 is larger than the radius of the circular feed port, it can push the pressure plate 19 to move downward to compact the sludge and seal the circular feed port at the same time. The sewage that is pressed out is discharged into the bearing frame 26 through the sewage discharge hole at the bottom of the collection box 15.

[0040] Compression springs 20 are vertically installed at the four right angles of the surface of the pressure plate 19. The top of the compression spring 20 penetrates the top surface of the collection box 15. A fixing frame 21 is provided at the top of the compression spring 20. The bottom surface of the fixing frame 21 is fixedly connected to the surface of the collection box 15. Each compression spring 20 is provided with a telescopic rod 33. The telescopic end of the telescopic rod 33 is fixedly connected to the top surface of the fixing frame 21. The bottom end of the telescopic rod 33 is fixedly connected to the surface of the pressure plate 19. Specifically, the telescopic rod 33 can limit the telescopic direction of the compression spring 20, making it less likely to deviate and ensuring the stability of the compression spring 20 during use.

[0041] A pressure-bearing frame 5 is provided between the upper and lower sides of the inside of the conveyor belt 2. The surface of the pressure-bearing frame 5 is in contact with the inner surface of the conveyor belt 2. An air guide pipe 9 is connected to the side of the pressure-bearing frame 5. A hot air blower 6 is provided on the other side of the surface of the base plate 1. The output port of the hot air blower 6 is connected to the end of the air guide pipe 9. Two stabilizing frames 23 are provided on both sides of the pressure-bearing frame 5. The bottom surface of the stabilizing frame 23 is fixedly connected to the surface of the base plate 1.

[0042] Specifically, the stabilizing frame 23 can support and stabilize the pressure-bearing frame 5, allowing it to smoothly guide air while also helping to bear the pressure on the conveyor belt 2, making the conveyor belt 2 less prone to damage due to pressure.

[0043] A sealing door 30 is hinged to the bottom of the collection box 15 near the conveyor belt 2. Rotating frames 31 are provided on both sides of the sealing door 30. A third electric push rod 32 is rotatably connected to both sides of the collection box 15. The telescopic ends of the third electric push rod 32 on both sides are fixedly connected to the rotating frames 31 on both sides.

[0044] Specifically, the sealing door 30 can seal the collection box 15 when compressing sludge, and the power provided by the third electric push rod 32 can push the sealing door 30 upward, so that the sludge after compression can be discharged from the inside of the collection box 15.

[0045] Inside the collection box 15, on the side away from the sealing door 30, a push plate 34 is slidably fitted. A connecting frame 35 is provided on the side of the collection box 15. A hydraulic rod 36 is provided on the inner side of the connecting frame 35. The telescopic end of the hydraulic rod 36 is fixedly connected to the side of the push plate 34.

[0046] Specifically, while the hydraulic rod 36 pushes the push plate 34 into the collection box 15, it pushes the compressed mud from inside the collection box 15 onto the conveyor belt 2, ensuring the normal operation of the subsequent mud dewatering work. The push plate 34 is embedded in the bottom side of the collection box 15 away from the sealing door 30, and the push plate 34 is coplanar with the inner side of the collection box 15 away from the sealing door 30.

[0047] In this embodiment, when the device is in use, the connecting flange at the top of the hoist tube 16 is first connected to the external sludge hopper. After the sludge is discharged into the hoist tube 16, it enters the collection box 15 through the circular feed inlet. After discharge, the power provided by the second electric push rod 17 pushes the conical column 18 downward. Since the radius of the bottom surface of the conical column 18 is larger than the radius of the circular feed inlet on the pressure plate 19, the pressure plate 19 can be pushed downward and completely covered by the circular feed inlet, and the compression spring 20 is forced to stretch, so that the sludge inside the collection box 15 is compressed downward into square mud blocks, which facilitates the collection and secondary treatment of sludge. After compression, the compression spring 20 is contracted and the second electric push rod 17 is contracted, which drives the pressure plate 19 to return to its original position. Then, the sealing door 30 is opened by the third electric push rod 32, and the push plate 34 is pushed to the left by the hydraulic rod 36, pushing the compressed mud blocks onto the conveyor belt 2.

[0048] The electric roller 4 drives the conveyor belt 2 to rotate, moving the sludge block directly below the heating cover 12. The first electric push rod 11 drives the heating cover 12 downward, covering the sludge block. At this time, the insertion rod 13 penetrates into the sludge block, and the heat provided by the second electric heating wire 14 heats and dries the sludge block from the inside. Then, the heating cover 12 is moved upward to reset, leaving holes formed by the insertion rod 13 on the sludge block. The hot air blower 6 sends hot air into the pressure frame 5 through the air guide pipe 9. At this time, the air vents 3 allow the hot air to blow from bottom to top onto the sludge block. At the same time, the hot air is discharged through the holes formed by the insertion rods 13, further increasing the drying efficiency of the sludge block. This allows the sludge block to quickly reduce its internal moisture content in a short time, greatly increasing the dehydration efficiency of the sludge block.

[0049] Second embodiment:

[0050] Reference Figure 7 Based on the sludge dewatering press provided in the first embodiment, in actual use, especially during the pressing process of the press plate 19 pressing the sludge, the sludge at the bottom will enter the drain hole on the bottom surface of the collection box 15, which can easily cause blockage of the drain hole. As a result, the pressed wastewater and sludge cannot be completely discharged, affecting the dewatering effect. In addition, after the compacted sludge is pushed onto the surface of the conveyor belt 2, sludge can also easily enter the air vents 3 on the surface of the conveyor belt 2, which can prevent some hot air from being discharged from the air vents 3, affecting the dewatering and drying efficiency of the sludge. In order to solve the above problems:

[0051] Electromagnets 201 are embedded at equal intervals in the middle of the surface of the conveyor belt 2.

[0052] Two opposing inner sides of the support frame 26 are provided with guide grooves 2601, and guide rods 2602 are provided in the guide grooves 2601. A transmission plate 2603 is slidably connected between the two sides of the inner side of the support frame 26. The two ends of the transmission plate 2603 are respectively movably sleeved on the guide rods 2602 on both sides. A transmission spring 2604 is sleeved on the guide rod 2602. The two ends of the transmission spring 2604 are respectively fixedly connected to the side of the transmission plate 2603 and the end face of the guide groove 2601. A push rod 2607 is provided on the side of the transmission plate 2603. A metal seat 2608 is provided at one end of the push rod 2607. The metal seat 2608 corresponds to the electromagnet 201. A brush 2609 that fits against the conveyor belt 2 is provided on the side of the metal seat 2608.

[0053] A baffle 2605 is rotatably connected to the side of the support frame 26 away from the conveyor belt 2. The bottom of the baffle 2605 is set with an arc surface structure. An opening and closing motor 2606 is provided on the side of the support frame 26. The output shaft of the opening and closing motor 2606 passes through the side of the support frame 26 and is fixedly connected to the top end face of the baffle 2605.

[0054] The output port of the hot air blower 6 is equipped with a pressure sensor 601.

[0055] The air pressure sensor 601 can detect whether the air vent 3 on the conveyor belt 2 is blocked by measuring the gas pressure of the airflow discharged from the hot air blower 6. When the air vent 3 on the conveyor belt 2 corresponding to the pressure frame 5 is blocked, some of the hot air cannot be discharged from the hole formed by the insert rod 13, which leads to an increase in the pressure at the air outlet of the hot air blower 6, thus indicating that the air vent 3 on the conveyor belt 2 is blocked.

[0056] A detection tube 1501 is provided on the bottom side of the collection box 15, and a gas flow sensor 1502 is provided on the detection tube 1501.

[0057] The gas flow sensor 1502 is used to measure the flow rate of gas discharged from the collection box 15. By utilizing the cooperation of the sealing door 30, the push plate 34, and the conical column 18 with the circular feed port, the position of the collection box 15 at the bottom of the pressure plate 19 is sealed. Therefore, when the second electric push rod 17 drives the pressure plate 19 to move downward through the conical column 18, most of the airflow can only be discharged from the drain hole at the bottom of the collection box 15, and a small portion of the airflow is discharged from the detection tube 1501. When the drain hole at the bottom of the collection box 15 is blocked, the airflow through the drain hole is obstructed, which leads to an increase in the gas discharge from the detection tube 1501. The gas flow sensor 1502 can then detect that the drain hole at the bottom of the collection box 15 is blocked.

[0058] In this embodiment, when the device is in use, the sludge is compacted into blocks by the pressure plate 19 and pushed out by the push plate 34. The sealing door 30 and the push plate 34 are then reset using the third electric push rod 32 and the hydraulic rod 36, respectively, to close the collection box 15. The second electric push rod 17 then moves the conical column 18 downwards, simultaneously pressing down the pressure plate 19. During this process, the gas flow sensor 1502 detects the gas flow rate discharged from the detection tube 1501. When the gas flow sensor 1502 detects that the gas flow rate discharged from the detection tube 1501 is greater than a set threshold, it actively determines that the drain hole on the bottom of the collection box 15 is blocked. At this time, while the bottom surface of the conical column 18 remains in contact with the circular feed opening, the second electric push rod 17... The pressure plate 19 moves up and down rapidly under the action of the compression spring 20, and during this process, the pressure plate 19 moves slowly upward by the slow contraction of the second electric push rod 17, and draws air into the collection box 15 through the drain hole at the bottom of the collection box 15. During the rapid extension, the pressure plate 19 quickly discharges the drawn-in gas. During the discharge process, the airflow can be used to discharge the sludge blocked in the drain hole from the collection box 15, thereby clearing the drain hole. The cleaned sludge falls into the support frame 26, and at this time, the baffle 2605 on one side of the support frame 26 is in an inclined state to facilitate the discharge of sludge and sewage. After the drain hole is cleaned, when the gas flow sensor 1502 detects that the gas flow rate discharged from the detection tube 1501 is less than the set threshold, the conical column 18 resets and disengages from the pressure plate 19.

[0059] However, due to the high viscosity of the sludge wastewater, the sludge easily adheres to the bottom of the bearing frame 26, making it difficult to discharge. Therefore, after the compacted sludge blocks are pushed onto the conveyor belt 2, the electromagnet 201 is activated. Simultaneously, the electric roller 4 drives the conveyor belt 2 to rotate counterclockwise, and the electromagnet 201 moves accordingly. When the electromagnet 201 aligns with the metal seat 2608, the metal seat 2608 is attracted by the magnetism of the electromagnet 201. At the same time, the metal seat 2608 moves linearly a certain distance with the conveyor belt 2. During this process, the metal seat 2608 drives the transmission plate 2603 to slide via the push rod 2607, compressing the transmission spring 2604. As the transmission plate 2603 slides, it removes the sludge adhering to the bearing frame 26. Sludge is discharged from the bottom of the frame 26. When the electromagnet 201 reaches the end and begins to move upward to the electric roller 4, the pulling force generated by the conveyor belt 2 overcomes the magnetic attraction of the electromagnet 201 to the metal seat 2608, forcing the electromagnet 201 to separate from the metal seat 2608. After separation, the transmission plate 2603 quickly resets under the action of the transmission spring 2604. Since multiple electromagnets 201 are embedded at equal intervals on the surface of the conveyor belt 2, the transmission plate 2603 can reciprocate and slide in a circular manner, thereby pushing out the sludge and sewage in the frame 26. When the compacted sludge block is conveyed to the position corresponding to the heating cover 12, the electric roller 4 stops working, and the electromagnet 201 closes and loses its magnetism.

[0060] In addition, during the process of conveying the sludge blocks compacted by the pressure plate 19 to the surface of the conveyor belt 2 for heating and drying, the sludge is still in a relatively wet state and has strong fluidity. Therefore, the sludge is easy to block the air vents 3 on the surface of the conveyor belt 2, which causes some of the airflow generated by the hot air blower 6 to be unable to contact the sludge blocks, affecting the dehydration and drying efficiency of the sludge.

[0061] Therefore, when the air pressure sensor 601 detects that the gas pressure at the outlet of the hot air blower 6 is greater than the set threshold, it actively determines that the vent 3 is blocked. At this time, the sludge blocks on the conveyor belt 2 are first unloaded, and the electric roller 4 continues to drive the conveyor belt 2 to run. The start-stop motor 2606 drives the baffle 2605 to rotate, so that the baffle 2605 is in a vertical state to close the end of the bearing frame 26. At this time, the bearing frame 26 is in a closed state, and the collection box 15 is kept closed by the sealing door 30 and the push plate 34. The bearing frame 26 is connected to the inside of the collection box 15 through the sewage discharge hole at the bottom of the collection box 15. At the same time, the conical column 18 is attached to the circular feed port in the middle of the pressure plate 19, and the second electric push rod 17 reciprocates slightly and quickly. During this process, when the second electric push rod 17 extends slightly, it pushes the transmission plate 260 through the airflow. 3. When sliding, the transmission spring 2604 is stretched, and when the second electric push rod 17 slightly retracts, the transmission plate 2603 returns to its original position. Therefore, the transmission plate 2603 moves back and forth slightly by the slight reciprocating extension and retraction of the second electric push rod 17, which in turn drives the brush 2609 to move back and forth slightly. Since the brush 2609 is in contact with the surface of the conveyor belt 2 and the conveyor belt 2 is in operation, it cleans the conveyor belt 2 and the vent holes 3 on the conveyor belt 2, removing the sludge blocking the vent holes 3, thus clearing the vent holes 3. This allows the hot airflow generated by the hot air blower 6 to fully contact the sludge. When the air pressure sensor 601 detects that the gas pressure at the output port of the hot air blower 6 is less than the set threshold, the start / stop motor 2606 opens the baffle 2605, making the baffle 2605 tilted. At the same time, the second electric push rod 17 returns to its original position, and the electric roller 4 stops rotating.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dewatering press for sludge disposal, characterized by, Includes a base plate, on one side of the surface of the base plate two sets of supports are symmetrically arranged, each set of supports is equipped with an electric roller, and a conveyor belt is connected between the electric rollers on both sides. Electromagnets are embedded at equal intervals in the middle of the surface of the conveyor belt. The base plate has a support frame on its surface, a first electric push rod on the top of the support frame, a heating cover on the telescopic end of the first electric push rod, a collection box in the middle of the base plate, a hoist tube on the top of the collection box, a second electric push rod inside the hoist tube, a tapered column on the telescopic end of the second electric push rod, and a pressure plate slidingly fitted on the inner side of the collection box. The bottom surface of the collection box is provided with a support frame fixedly connected to the surface of the base plate. Two opposite inner sides of the support frame are provided with guide grooves. Guide rods are provided in the guide grooves. A transmission plate is slidably connected between the two inner sides of the support frame. The two ends of the transmission plate are respectively movably sleeved on the guide rods on both sides. A transmission spring is sleeved on the guide rod. The two ends of the transmission spring are fixedly connected to the side of the transmission plate and the end face of the guide groove, respectively. A push rod is provided on the side of the transmission plate. A metal seat is provided at one end of the push rod. A brush that fits against the conveyor belt is provided on the side of the metal seat. The surface of the conveyor belt is provided with ventilation holes; A pressure-bearing frame is provided between the upper and lower sides of the inside of the conveyor belt. The surface of the pressure-bearing frame is in contact with the inner surface of the conveyor belt, and an air guide pipe is connected to the side of the pressure-bearing frame. A hot air blower is provided on the other side of the surface of the base plate, and the output port of the hot air blower is connected to the end of the air guide pipe; The heating cover has hollow inserts evenly distributed on its inner top surface, and a second heating wire is provided inside each insert. Exhaust holes are provided on both the side and top surfaces of the heating cover. The bottom of the collection box near the conveyor belt is hinged with a sealing door. Rotating frames are provided on both sides of the sealing door. A third electric push rod is rotatably connected to both sides of the collection box. The telescopic ends of the third electric push rods on both sides are fixedly connected to the rotating frames on both sides respectively. The pressure plate has a circular feed inlet at its center, corresponding to the conical column. The radius of the conical column is larger than the radius of the circular feed inlet. Compression springs are vertically installed at the four right angles of the pressure plate. The top of each compression spring penetrates the top surface of the collection box. A fixing frame is installed at the top of each compression spring. The bottom surface of the fixing frame is fixedly connected to the surface of the collection box. Each compression spring has a telescopic rod inside. The telescopic end of each telescopic rod is fixedly connected to the top surface of the fixing frame. The bottom end of each telescopic rod is fixedly connected to the surface of the pressure plate. The inside of the collection box is fitted with a push plate on the side away from the sealed door. The side of the collection box is provided with a connecting frame, and the inner side of the connecting frame is provided with a hydraulic rod. The telescopic end of the hydraulic rod is fixedly connected to the side of the push plate.

2. A dewatering press for sludge disposal according to claim 1, characterized in that A baffle is rotatably connected to the side of the support frame away from the conveyor belt. The bottom of the baffle is set with an arc surface structure. An opening and closing motor is provided on the side of the support frame. The output shaft of the opening and closing motor passes through the side of the support frame and is fixedly connected to the top end face of the baffle.

3. A dewatering press for sludge disposal according to claim 1, wherein Two stabilizing frames are provided on both sides of the pressure-bearing frame, and the bottom surface of the stabilizing frame is fixedly connected to the surface of the base plate.

4. A dewatering press for sludge treatment according to claim 1, characterized in that, The output port of the hot air blower is equipped with a pressure sensor.

5. A dewatering press for sludge treatment according to claim 1, characterized in that, The bottom side of the collection box is equipped with a detection tube, and a gas flow sensor is installed on the detection tube.

6. A dewatering press for sludge treatment according to claim 1, characterized in that, The top surface of the collection box is provided with a U-shaped frame, the top of the U-shaped frame extends through both sides of the top of the hoist tube, the upper surface of the U-shaped frame has a triangular cross-section, and the top of the U-shaped frame is fixedly connected to the top of the second electric push rod.

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