Sludge drying treatment device and sludge drying treatment method

Abstract

The present invention relates to a sludge drying treatment device and a sludge drying treatment method, aiming to provide an environmentally friendly and economical sludge management solution for township sewage treatment plants. The device includes a sealed housing, which is internally equipped with a horizontally telescopic sludge conveyor belt for efficient material transmission. One end of the housing is provided with a sludge inlet hopper to ensure the smooth entry of sludge into the treatment process, while the other end is connected to a dry sludge collection box, which is equipped with a dry sludge collection box inside. The specially designed inclined plate guides the dried sludge to smoothly transition from the end of the conveyor belt to the collection box, ensuring no leakage during the process. The top of the device is covered with a sunlight plate and is equipped with a foldable section to maximize the utilization of solar energy and improve the drying efficiency. The folding section at the bottom of the housing further optimizes the space adaptability of the equipment. The overall design is simple and easy to operate, significantly reducing the maintenance cost, while greatly reducing the moisture content of the sludge and lowering the subsequent treatment and transportation costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of municipal sludge dredging, and particularly relates to a sludge drying treatment device and a sludge drying treatment method. Background Art

[0002] In recent years, relevant management departments have continuously raised the control standards for sludge moisture content, prompting the sewage treatment industry to seek more efficient and economical sludge treatment technologies. Especially in township-level sewage treatment plants, there is an urgent need for a deep drying treatment solution that can adapt to local conditions, effectively reduce the sludge moisture content, and have controllable costs. Traditional sludge drying methods often rely on mechanical dewatering or thermal drying, but these methods either consume a large amount of energy or have high requirements for equipment, and are not easy to promote in township areas with limited resources. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a sludge drying treatment device and a sludge drying treatment method, aiming to provide a sludge drying device that can make full use of solar energy, has the characteristics of simple structure, easy operation, and low maintenance cost, and can effectively reduce the moisture content of sludge, reducing the costs of subsequent treatment and transportation, so as to provide a more environmentally friendly and economical sludge treatment solution for township sewage treatment plants.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is: a sludge drying treatment device, including a device housing. A sludge conveyor belt is provided inside the device housing. An inlet hopper is provided at one end of the device housing, and the output port of the inlet hopper is located above the input end of the sludge conveyor belt. A dry mud collection box is provided on the outer wall at the other end of the device housing. A dry mud collection box is provided inside the dry mud collection box. An opening communicating the two is provided between the device housing and the dry mud collection box. An inclined plate is provided in the opening. The higher end of the inclined plate is located below the output end of the sludge conveyor belt, and the lower end is located above the dry mud collection box;

[0005] A sunlight plate is provided on the top of the device housing. Sunlight plate folding sections are respectively provided on both sides of the sunlight plate through hinge shafts. Housing folding sections are provided on both sides of the bottom plate of the device housing through hinge shafts;

[0006] The sludge conveyor belt can be unfolded and folded in the horizontal direction.

[0007] In a preferred solution, a sludge stirrer is provided in the inlet hopper, and the sludge stirrer is used to stir and break up the lumps in the input sludge.

[0008] In a preferred solution, a sludge spreading plate is provided on the inner top surface of the device housing. The sludge spreading plate is arranged close to the inlet hopper. The distance between the bottom surface of the sludge spreading plate and the upper belt surface of the sludge conveyor belt is less than 2 cm. The sludge spreading plate is used to spread and disperse the input sludge.

[0009] In a preferred embodiment, the sludge spreading plate is a "V" - shaped plate, and the obtuse angle of the sludge spreading plate faces the mud inlet hopper.

[0010] In a preferred embodiment, the dry mud collection box is installed in the dry mud collection tank by a drawer - type structure.

[0011] In a preferred embodiment, the inclined plate is movably fixed in the opening through a pin shaft, and the higher end of the inclined plate extends to contact the lower belt surface of the sludge conveyor belt;

[0012] On the bottom surface of the device housing, there is a column. A spring is sleeved on the column. A strip - shaped groove is provided on the bottom surface of the inclined plate, and a slidable slider is provided in the strip - shaped groove. The upper end of the spring is fixedly connected to the slider.

[0013] In a preferred embodiment, an exhaust pipe is provided on the sunlight - proof board. A plurality of vertical condensation pipes are provided on the bottom surface of the sunlight - proof board. A condensate collection branch pipe is provided directly below the condensation pipe. A plurality of condensate collection branch pipes are arranged on the same condensate discharge pipe. One end of the condensate discharge pipe passes through the end wall of the device housing;

[0014] A support rod for fixedly supporting the condensate discharge pipe is provided on the obtuse - angle side of the sludge spreading plate.

[0015] In a preferred embodiment, the sludge conveyor belt is driven by conveyor belt rollers. The same end of the sludge conveyor belt includes two conveyor belt rollers. The two conveyor belt rollers are connected by a connecting rod. The connecting rods are hinged. Bearings are provided on the outer ends of the conveyor belt rollers. The conveyor belt rollers are fixedly connected to the bearings. The outer ring of the bearing is hinged with a conveyor belt support frame;

[0016] Chute grooves are provided on both sides of the bottom plate of the device housing and on one side of the housing folding section close to the device housing. The lower end of the conveyor belt support frame is arranged in the chute groove on the bottom plate of the device housing and can move horizontally along the chute groove to the housing folding section.

[0017] In a preferred embodiment, one of the conveyor belt rollers is driven by a driving motor. The driving shaft of the driving motor passes through the bearing.

[0018] Based on the above - mentioned sludge drying treatment device, the sludge drying treatment method includes the following steps:

[0019] 1) The device enters the site and the device is moved to the end of the sludge conveying line;

[0020] 2) Flip up the two sunlight - proof board folding sections and flip down the two housing folding sections to unfold the whole device;

[0021] 3) Horizontally move the conveyor belt support frame to unfold the whole sludge conveyor belt and ensure the tension of the sludge conveyor belt;

[0022] 4) Install a driving motor on one of the conveyor belt drums on one side at one end of the sludge conveyor belt;

[0023] 5) Start the sludge conveying line, input the sludge into the device from the sludge inlet hopper, and at the same time start the driving motor to make the sludge conveyor belt run;

[0024] 6) The sludge entering the device is agglomerated and broken by the sludge agitator and then falls on the sludge conveyor belt;

[0025] 7) The broken sludge is conveyed by the sludge conveyor belt and spread and dispersed through the sludge spreading plate;

[0026] 8) The sludge conveyor belt conveys the sludge and dries the sludge. The sludge formed after the water in the sludge evaporates and dries falls into the dry sludge collection box through the inclined plate;

[0027] 9) Part of the water vapor formed by evaporation is discharged through the exhaust pipe, and part of it is condensed by the condensing pipe to form condensed water, which is then discharged through the condensed water discharge pipe.

[0028] A sludge drying treatment device and a sludge drying treatment method provided by the present invention have the following beneficial effects by adopting the above structure and method:

[0029] (1) By combining the sunlight shed and various functional modules, the device can effectively utilize solar energy, significantly improve the sludge drying efficiency and quality, and greatly reduce the subsequent treatment and transportation costs;

[0030] (2) The device is designed as a retractable structure, which can be retracted when not in use, reducing the occupied space, facilitating storage and handling. When working, the device can be quickly deployed to meet the requirements of a large treatment area and is suitable for sewage treatment sites of different scales. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following further describes the present invention with reference to the drawings and embodiments:

[0032] Figure 1 It is a schematic internal structure diagram of the present invention.

[0033] Figure 2 It is a schematic end view structure diagram of the present invention in the retracted state.

[0034] Figure 3 It is a schematic end view structure diagram of the present invention in the deployed state.

[0035] In the figure: device housing 1, first roller 101, sunlight board 2, mud inlet hopper 3, sludge agitator 4, mud spreading plate 5, sludge conveyor belt 6, conveyor belt rotating drum 601, connecting rod 602, dry mud collection box 7, second roller 701, dry mud collection box 8, opening 9, inclined plate 10, strip groove 1001, slider 1002, column 11, spring 12, condensate discharge pipe 13, support rod 131, condensate collection branch pipe 14, condensate pipe 15, exhaust pipe 16, folding section of sunlight board 17, folding section of housing 18, conveyor belt support frame 19, bearing 20, chute 21, drive motor 22. Detailed implementation manner

[0036] Embodiment 1:

[0037] A sludge drying treatment device includes a device housing 1. A sludge conveyor belt 6 is arranged inside the device housing 1. A mud inlet hopper 3 is arranged at one end of the device housing 1. The output port of the mud inlet hopper 3 is located above the input end of the sludge conveyor belt 6. A dry mud collection box 7 is arranged on the outer wall at the other end of the device housing 1. A dry mud collection box 8 is arranged inside the dry mud collection box 7. An opening 9 communicating the two is arranged between the device housing 1 and the dry mud collection box 7. An inclined plate 10 is arranged in the opening 9. The higher end of the inclined plate 10 is located below the output end of the sludge conveyor belt 6, and the lower end is located above the dry mud collection box 8;

[0038] A sunlight board 2 is arranged on the top of the device housing 1. Folding sections 17 of the sunlight board are respectively arranged on both sides of the sunlight board 2 through hinge shafts. Folding sections 18 of the housing are arranged on both sides of the bottom plate of the device housing 1 through hinge shafts;

[0039] The sludge conveyor belt 6 can be unfolded and folded in the horizontal direction.

[0040] In a preferred solution, a sludge agitator 4 is arranged in the mud inlet hopper 3. The sludge agitator 4 is used for stirring and crushing the lumps in the input sludge.

[0041] In a preferred solution, a mud spreading plate 5 is arranged on the inner top surface of the device housing 1. The mud spreading plate 5 is arranged close to the mud inlet hopper 3. The distance between the bottom surface of the mud spreading plate 5 and the upper belt surface of the sludge conveyor belt 6 is less than 2 cm. The mud spreading plate 5 is used for spreading and dispersing the input sludge.

[0042] In a preferred solution, the mud spreading plate 5 is a "V"-shaped plate, and the acute angle of the mud spreading plate 5 faces the mud inlet hopper 3.

[0043] In a preferred solution, the dry mud collection box 8 is installed in the dry mud collection box 7 by adopting a drawer-type structure.

[0044] In a preferred solution, the inclined plate 10 is movably fixed in the opening 9 through a pin shaft, and the higher end of the inclined plate 10 extends to contact the lower belt surface of the sludge conveyor belt 6;

[0045] On the bottom surface of the device housing 1, there is a column 11. A spring 12 is sleeved on the column 11. A strip-shaped groove 1001 is provided on the bottom surface of the inclined plate 10. A slidable slider 1002 is provided in the strip-shaped groove 1001. The upper end of the spring 12 is fixedly connected to the slider 1002.

[0046] In a preferred solution, an exhaust pipe 16 is provided on the sunlight panel 2. A plurality of vertical condensing pipes 15 are provided on the bottom surface of the sunlight panel 2. A condensate collection branch pipe 14 is provided directly below the condensing pipe 15. A plurality of condensate collection branch pipes 14 are arranged on the same condensate discharge pipe 13. One end of the condensate discharge pipe 13 passes through the end wall of the device housing 1 and is arranged;

[0047] On the obtuse angle side of the sludge spreading plate 5, there is a support rod 131 for fixedly supporting the condensate discharge pipe 13.

[0048] In a preferred solution, the sludge conveyor belt 6 is driven by a conveyor belt rotating cylinder 601. The same end of the sludge conveyor belt 6 includes two conveyor belt rotating cylinders 601. The two conveyor belt rotating cylinders 601 are connected by a connecting rod 602. The connecting rods 602 are hinged. A bearing 20 is provided on the outer end of the conveyor belt rotating cylinder 601. The conveyor belt rotating cylinder 601 is fixedly connected to the bearing 20. The outer ring of the bearing 20 is hingedly provided with a conveyor belt support frame 19;

[0049] On both sides of the bottom plate of the device housing 1 and on one side of the housing folding section 18 close to the device housing 1, there are sliding grooves 21. The lower end of the conveyor belt support frame 19 is arranged in the sliding groove 21 on the bottom plate of the device housing 1 and can move horizontally along the sliding groove 21 to the housing folding section 18.

[0050] In a preferred solution, one of the conveyor belt rotating cylinders 601 is driven by a driving motor 22. The driving shaft of the driving motor 22 passes through the bearing 20 and is arranged.

[0051] Embodiment 2:

[0052] Based on the sludge drying treatment method of the sludge drying treatment device described in Embodiment 1, it includes the following steps:

[0053] 1) The device enters the site and the device is moved to the end of the sludge conveying line;

[0054] 2) Turn up the two sunlight panel folding sections 17 and turn down the two housing folding sections 18 to expand the whole device;

[0055] 3) Horizontally move the conveyor belt support frame 19 to expand the whole sludge conveyor belt 6 and ensure the tension of the sludge conveyor belt 6;

[0056] 4) Install the drive motor 22 on one of the conveyor belt drums 601 on one side at one end of the sludge conveyor belt 6;

[0057] 5) Start the sludge conveying line, input the sludge into the device from the sludge inlet hopper 3, and at the same time start the drive motor 22 to make the sludge conveyor belt 6 operate;

[0058] 6) The sludge entering the device is agglomerated and broken by the sludge stirrer 4 and then falls on the sludge conveyor belt 6;

[0059] 7) The broken sludge is conveyed by the sludge conveyor belt 6 and spread and dispersed through the sludge spreading plate 5;

[0060] 8) The sludge conveyor belt 6 conveys the sludge and dries the sludge. The sludge formed after the water in the sludge evaporates and dries falls into the dry sludge collection box 7 through the inclined plate 10;

[0061] 9) Part of the water vapor formed by evaporation is discharged through the exhaust pipe 16, and part is condensed by the condenser pipe 15 to form condensed water, and then discharged through the condensed water discharge pipe 13.

[0062] Example 3:

[0063] Taking actual operation as an example:

[0064] (1) Device assembly and deployment:

[0065] In a typical rural sewage treatment plant, assuming the daily sewage treatment volume is 250 cubic meters, 0.2 cubic meters of sludge with a moisture content of 80% needs to be treated. Deploy the sludge drying treatment device of the present invention to treat this part of the sludge.

[0066] Initial state: The device is in a contracted state, with dimensions of 3.5 meters × 1 meter, which is convenient for transportation and storage.

[0067] (2) Preparation stage:

[0068] Move the device to the designated position and place it stably using the first roller 101 and the second roller 701.

[0069] Fold the housing folding section 18 at the bottom plate of the device housing 1 downward, and then fold the sunlight plate folding section 17 of the sunlight plate 2 upward to stretch the device.

[0070] Pull the conveyor belt support frame 19 at the end of the sludge conveyor belt 6 to make the sludge conveyor belt 6 unfold to Figure 3 the state shown, and at this time the device dimensions become 3.5 meters × 3 meters, completing the preparation work for the stretched state.

[0071] (3) Pre-operation inspection:

[0072] Confirm that all components have been correctly installed.

[0073] Check whether the condensate drain pipe 13 and the condensate collection branch pipe 14 are unobstructed, and confirm that the exhaust pipe 16 is unblocked.

[0074] Verify whether the sludge conveyor belt 6 is straight and not overly slack or taut.

[0075] Operation process

[0076] (1) Feeding: The high-moisture-content sludge to be treated enters the sludge hopper 3, and the device starts.

[0077] (2) Stirring and spreading: The sludge is agitated by the sludge stirrer 4 during the falling process, broken into smaller lumps, and then evenly distributed onto the sludge conveyor belt 6. The sludge spreading plate 5 ensures an appropriate thickness of the sludge layer, which is conducive to water evaporation.

[0078] (3) Drying: Inside the sunlight shed, solar energy is used to accelerate water evaporation. At the same time, air circulation is maintained through the exhaust pipe 16 to increase the drying rate.

[0079] When the temperature is lower than 40°C, the conveyor belt speed is set to the first gear at 0.2 m / h.

[0080] When the temperature is between 40 and 50°C, the speed is adjusted to the second gear at 0.3 m / h.

[0081] When the temperature exceeds 50°C, the speed is increased to the third gear at 0.4 m / h.

[0082] (4) Condensate management: The evaporated water is condensed at the condensate pipe 15 and safely discharged through the condensate drain pipe 13 to avoid water accumulation affecting the drying efficiency.

[0083] (5) Discharging: The dried sludge is sent by the sludge conveyor belt 6 to the discharge opening 9 and collected and output through the dry sludge collection box 8.

[0084] Result evaluation

[0085] Under sufficient sunlight in summer, this device can dry 0.2 cubic meters of sludge with a water content of 80% to 60%, meeting the expected goal.

[0086] The volume of the treated sludge decreases, which is convenient for storage and transportation and reduces the subsequent treatment cost.

[0087] The device has low energy consumption. Only a small amount of electricity is required to support the operation of the sensors and the conveyor belt, and most of the energy comes from solar energy, which is environmentally friendly and economical.

[0088] Shrinkage and storage

[0089] After completing the treatment task, restore the device to the shrunk state in the reverse order for easy storage or transfer to other locations.

[0090] Through the above embodiments, the sludge drying treatment device of the present invention has performed excellently in the application of township sewage treatment plants, not only improving the drying efficiency but also reducing the operating cost, demonstrating its feasibility and advantages in practical scenarios.

Claims

1. A sludge drying treatment device, comprising a device housing (1), characterized in that: A sludge conveyor belt (6) is provided in the device shell (1), a sludge inlet hopper (3) is provided on one end of the device shell (1), an output port of the sludge inlet hopper (3) is located above the input end of the sludge conveyor belt (6), a dry sludge collection box (7) is provided on the outer wall of the other end of the device shell (1), a dry sludge collection box (8) is provided in the dry sludge collection box (7), an opening (9) is provided between the device shell (1) and the dry sludge collection box (7) to connect the two, an inclined plate (10) is provided in the opening (9), a higher end of the inclined plate (10) is located below the output end of the sludge conveyor belt (6), and a lower end is located above the dry sludge collection box (8); A sun panel (2) is provided on the top of the device housing (1); sun panel folding sections (17) are provided on both sides of the sun panel (2) via hinged shafts; and housing folding sections (18) are provided on both sides of the bottom plate of the device housing (1) via hinged shafts. The sludge conveyor belt (6) can be expanded and retracted in the transverse direction; A mud spreading plate (5) is provided on the inner top surface of the device housing (1), the mud spreading plate (5) is arranged close to the mud inlet hopper (3), the distance between the bottom surface of the mud spreading plate (5) and the upper belt surface of the sludge conveyor belt (6) is less than 2 cm, and the mud spreading plate (5) is used to spread and disperse the input sludge; The inclined plate (10) is movably fixed in the opening (9) via a pin shaft, and the higher end of the inclined plate (10) extends to contact the lower belt surface of the sludge conveyor belt (6); A column (11) is provided on the bottom surface of the device housing (1), a spring (12) is sleeved on the column (11), a strip groove (1001) is provided on the bottom surface of the inclined plate (10), a sliding block (1002) is provided in the strip groove (1001), and the upper end of the spring (12) is fixedly connected to the sliding block (1002); The sludge conveyor belt (6) is driven by a conveyor belt drum (601). The same end of the sludge conveyor belt (6) includes two conveyor belt drums (601). The two conveyor belt drums (601) are connected by a connecting rod (602). The connecting rods (602) are hinged. A bearing (20) is provided on the outer end of the conveyor belt drum (601). The conveyor belt drum (601) and the bearing (20) are fixedly connected. A conveyor belt support frame (19) is hingedly provided on the outer ring of the bearing (20). Slide grooves (21) are provided on both sides of the bottom plate of the device shell (1) and on the side of the shell folding section (18) close to the device shell (1); the lower end of the conveyor belt support frame (19) is arranged in the slide groove (21) on the bottom plate of the device shell (1) and can be laterally moved along the slide groove (21) to the shell folding section (18); One of the conveyor belt drums (601) is driven by a drive motor (22), and a drive shaft of the drive motor (22) is disposed through a bearing (20); The mud spreading plate (5) is a "V"-shaped plate, and the superior angle of the mud spreading plate (5) is arranged toward the mud inlet hopper (3).

2. A sludge drying treatment device according to claim 1, characterized in that: A sludge agitator (4) is provided in the sludge inlet hopper (3), and the sludge agitator (4) is used to agitate and break up lumps in the input sludge.

3. A sludge drying treatment device according to claim 1, characterized in that: The dry mud collection box (8) is installed in the dry mud collection box (7) using a drawer-type structure.

4. A sludge drying treatment device according to claim 2, characterized in that: The solar panel (2) is provided with an exhaust pipe (16), a plurality of vertical condensing pipes (15) are provided on the bottom surface of the solar panel (2), a condensed water collecting branch pipe (14) is provided directly below the condensed water collecting branch pipe (15), the plurality of condensed water collecting branch pipes (14) are arranged on the same condensed water discharge pipe (13), and one end of the condensed water discharge pipe (13) is arranged to pass through the end wall of the device housing (1); A support rod (131) for fixing and supporting the condensate discharge pipe (13) is provided on the obtuse-angled side of the mud spreading plate (5).

5. A sludge drying method based on the sludge drying device according to claim 4, characterized in that The following steps are involved: 1) The device enters the site and moves to the end of the sludge conveying line; 2) folding the two solar panel folding sections (17) upwards and folding the two shell folding sections (18) downwards to unfold the device as a whole; 3) laterally moving the conveyor belt support frame (19) to unfold the sludge conveyor belt (6) as a whole, and ensuring that the sludge conveyor belt (6) is tensioned; 4) installing a driving motor (22) on a conveyor belt drum (601) on one side of one end of the sludge conveyor belt (6); 5) starting the sludge conveying line, feeding the sludge into the device through the sludge inlet hopper (3), and simultaneously starting the driving motor (22) to operate the sludge conveying belt (6); 6) The sludge entering the device is agglomerated and broken up by the sludge agitator (4) and then falls onto the sludge conveyor belt (6); 7) The crushed sludge is transported through a sludge conveyor belt (6) and spread and dispersed through a sludge spreading plate (5); 8) The sludge conveyor belt (6) conveys the sludge and dries the sludge. The sludge formed after the water in the sludge evaporates and dries falls from the inclined plate (10) into the dry sludge collection box (7); 9) Part of the water vapor generated by evaporation is discharged through the exhaust pipe (16), and part of it is condensed through the condenser pipe (15) to form condensed water, which is then discharged through the condensed water discharge pipe (13).

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