Belt type sludge low-temperature drying equipment utilizing waste heat

Abstract

The utility model discloses belt type sludge low-temperature drying equipment utilizing waste heat, and relates to the technical field of sludge drying, the belt type sludge low-temperature drying equipment comprises a drying box, a belt type conveying belt, a feed hopper, a low-temperature drying fan cover and a scattering mechanism, the two ends of the belt type conveying belt extend out of the drying box, the low-temperature drying fan cover is arranged in the drying box, and the scattering mechanism is arranged in the low-temperature drying fan cover. Waste heat air inlet pipes are arranged at the tops of the multiple sets of low-temperature drying fan covers, a scattering mechanism is arranged in the drying box between every two adjacent low-temperature drying fan covers, and each scattering mechanism comprises a scattering claw disc and a driving shaft; according to the utility model, the multiple groups of low-temperature drying fan covers are arranged in the drying box, and the scattering mechanisms are arranged between the adjacent low-temperature drying fan covers, so that the scattering claw discs, the driving shafts and the driving motors of the scattering mechanisms are matched with one another to scatter sludge; the low-temperature drying fan cover is beneficial to fully and efficiently drying the scattered sludge, and the problem of uneven drying is avoided, so that the drying quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge drying, in particular to a belt-type sludge low-temperature drying device utilizing waste heat. Background Art

[0002] Industrial sludge or municipal sludge (generally refers to sludge produced by domestic sewage treatment plants) generally has a moisture content of 65% to 85% after chemical conditioning and mechanical dehydration. Sludge drying refers to a method of further removing water from sludge by various means such as heating and evaporation, so as to reduce the volume of sludge and facilitate further harmless treatment. Sludge drying equipment can be divided into three types according to the contact between the heat medium and the sludge: direct heating type, indirect heating type and direct / indirect combined drying type. According to the process type, it can be divided into five types: fluidized bed drying, belt drying, paddle drying, horizontal rotary drying and vertical disc drying. According to the temperature of the heat medium provided, it can be divided into high temperature (greater than 200°C), medium temperature (100°C to 200°C) and low temperature (less than 100°C) sludge drying.

[0003] In the prior art, the belt-type sludge low-temperature drying equipment uses a belt conveyor to transport the sludge into a drying box, and uses the waste heat provided by the waste heat supply device in the drying box to dry the sludge stacking layer with a certain air permeability on the belt conveyor. In this process, the sludge stacking layer with a certain air permeability on the belt conveyor is dried in a static state, resulting in incomplete drying of the sludge inside the sludge stacking layer and the bottom layer, which in turn causes low drying efficiency. Therefore, the utility model proposes a belt-type sludge low-temperature drying equipment that uses waste heat to solve the deficiencies in the prior art. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a belt-type sludge low-temperature drying equipment that utilizes waste heat. By arranging multiple groups of low-temperature drying air hoods inside the drying box and arranging a breaking mechanism between adjacent low-temperature drying air hoods, the breaking claw plate, drive shaft and drive motor of the breaking mechanism cooperate with each other to achieve the sludge breaking, which is beneficial to utilize the low-temperature drying air hood to fully and efficiently dry the broken sludge, avoid the problem of uneven drying, thereby improving the drying quality and efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A belt-type sludge low-temperature drying equipment utilizing waste heat, comprising a drying box, a belt conveyor, a feed hopper, a low-temperature drying hood and a dispersing mechanism, wherein a belt conveyor is arranged inside the drying box, both ends of the belt conveyor extend out of the drying box, a feed hopper is arranged at the inlet end of the belt conveyor through a frame, a low-temperature drying hood is arranged inside the drying box, a plurality of groups of the low-temperature drying hoods are provided with waste heat intake pipes on the tops of the plurality of groups of the low-temperature drying hoods, the waste heat intake pipes are connected to an external waste heat exhaust pipe, and a dispersing mechanism is arranged inside the drying box between adjacent low-temperature drying hoods;

[0007] The breaking up mechanism includes a breaking up claw plate and a driving shaft. A driving shaft is rotatably provided inside the drying box between the adjacent low-temperature drying hoods. The driving shaft is provided in multiple groups along the width direction of the belt conveyor. The lower ends of the multiple groups of driving shafts are all provided with breaking up claw plates, and the upper ends of the multiple groups of driving shafts pass through the top of the drying box and are driven by a driving motor.

[0008] Further improvement is that: the low-temperature drying air hood includes a hood body, a movable plate and a waste heat blowing air duct, a heat storage cavity is provided inside the hood body, a movable plate is slidably provided inside the hood body below the heat storage cavity, a waste heat blowing air duct is provided at the bottom of the movable plate, and the waste heat blowing air duct is provided in multiple groups, and the upper ends of the multiple groups of waste heat blowing air ducts are connected to the heat storage cavity through corrugated pipes.

[0009] A further improvement is that the scattering claw disk includes a disk body, a mounting column and a scattering claw rod, the disk body is installed at the lower end of the driving shaft, a mounting column is provided at the bottom of the disk body, the mounting column is provided in multiple groups, and the bottom of the multiple groups of mounting columns are all provided with scattering claw rods, and the scattering claw rods are provided in multiple groups.

[0010] A further improvement is that baffles are provided on the front and rear sides of the hood bodies of adjacent low-temperature drying air hoods, the baffles are located on both sides of the belt conveyor, a gap is formed between the baffles and the two side walls of the belt conveyor, and the two ends of the baffles are respectively connected to the side walls of the hood bodies of adjacent low-temperature drying air hoods.

[0011] Further improvements are: a sludge flattening mechanism is provided above the inlet end of the belt conveyor, a cover is provided on one side of the sludge flattening mechanism, a discharge pipe at the lower end of the feed hopper leads to the inside of the cover, the sludge flattening mechanism is movably connected to the cross beam on the frame, the cover is fixedly connected to the cross beam on the frame, a roller is provided at the bottom of the cover, and the roller is in rolling contact with the top of the belt conveyor.

[0012] Further improvements are: the sludge flattening mechanism includes an adjusting rod and a flat plate, a pipe sleeve is provided on the cross beam, an adjusting rod is movably provided in the pipe sleeve, an adjusting hole is provided on the adjusting rod, and there are multiple adjusting holes along the length direction of the adjusting rod, an adjusting bolt is provided on the pipe sleeve, and the adjusting bolt is connected to the adjusting hole, and an expanding plate is provided at the lower end of the adjusting rod, and the length of the expanding plate is adapted to the width of the belt conveyor.

[0013] The beneficial effects of the utility model are as follows: the utility model arranges multiple groups of low-temperature drying hoods inside the drying box, and arranges a dispersing mechanism between adjacent low-temperature drying hoods, and the dispersing claws, the driving shaft and the driving motor of the dispersing mechanism cooperate with each other to achieve the dispersing of sludge, which is conducive to the use of the low-temperature drying hood to fully and efficiently dry the dispersed sludge, avoiding the problem of uneven drying, thereby improving the drying quality and efficiency;

[0014] The utility model arranges a sludge flattening mechanism above the inlet end of the belt conveyor belt, and utilizes a flattening plate to flatten the accumulated sludge coming out of the feed hopper into a set thickness and then spread it on the belt conveyor belt, and then the sludge enters the drying box to be efficiently dried, thereby avoiding the problem of incomplete drying caused by excessive sludge accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a side view schematic diagram of the internal structure of the low-temperature drying air hood of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the installation structure of the baffle and the low-temperature drying air hood of the utility model;

[0018] Figure 4 It is a three-dimensional schematic diagram of the structure of the scattering claw plate of the utility model.

[0019] Among them: 1. Drying box; 2. Belt conveyor; 3. Feed hopper; 4. Low-temperature drying hood; 401. Hood body; 402. Movable plate; 403. Waste heat blowing duct; 404. Heat storage chamber; 405. Bellows; 5. Frame; 501. Crossbeam; 6. Waste heat air inlet pipe; 7. Breaking claw plate; 701. Disc body; 702. Mounting column; 703. Breaking claw rod; 8. Drive shaft; 9. Drive motor; 10. Baffle; 11. Sludge flattening mechanism; 1101. Adjustment rod; 1102. Flattening plate; 1103. Adjustment hole; 1104. Adjustment bolt; 12. Enclosure; 13. Roller. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] according to Figure 1-4 As shown, this embodiment proposes a belt-type sludge low-temperature drying equipment using waste heat, including a drying box 1, a belt conveyor 2, a feed hopper 3, a low-temperature drying air hood 4 and a dispersing mechanism. The drying box 1 is provided with a belt conveyor 2, both ends of the belt conveyor 2 extend out of the drying box 1, and a feed hopper 3 is provided at the inlet end of the belt conveyor 2 through a frame 5. The drying box 1 is provided with a low-temperature drying air hood 4, and the low-temperature drying air hood 4 is provided with a plurality of groups, and the tops of the plurality of groups of low-temperature drying air hoods 4 are provided with A waste heat air intake pipe 6 is connected to an external waste heat discharge pipe. A dispersing mechanism is provided inside the drying box 1 between adjacent low-temperature drying air hoods 4. The dispersing mechanism includes a dispersing claw plate 7 and a driving shaft 8. A driving shaft 8 is rotatably provided inside the drying box 1 between adjacent low-temperature drying air hoods 4. A plurality of driving shafts 8 are provided along the width direction of the belt conveyor 2. Dispersing claw plates 7 are provided at the lower ends of the plurality of driving shafts 8. The upper ends of the plurality of driving shafts 8 pass through the top of the drying box 1 and are driven by a driving motor 9.

[0022] When the belt-type sludge low-temperature drying equipment utilizing waste heat of the utility model performs a sludge drying operation, the feed hopper 3 storing the sludge discharges the sludge quantitatively at the inlet end position of the belt conveyor 2, and then the sludge enters the drying box 1 and is dried by the first group of low-temperature drying air hoods 4, and then as the belt conveyor 2 runs, the sludge enters the first group of breaking up mechanisms and is broken up by the rotating multiple groups of breaking up claw discs 7, and the broken up sludge enters the second group of low-temperature drying air hoods 4 to continue the drying process, and then is broken up by the breaking up mechanisms, and this is repeated until the sludge is fully dried and then transported out of the drying box 1 along with the belt conveyor 2. In the present invention, the widths of the multiple groups of low-temperature drying hoods 4 can be different. In the optimal state, the width of the low-temperature drying hood 4 located at the outlet section of the drying box 1 can be greater than the width of the previous multiple groups of low-temperature drying hoods 4, because in the latter stage of the drying process, the breaking up mechanism is no longer required to perform the breaking up operation, and only the wide low-temperature drying hood 4 is used for a long period of drying process.

[0023] The low-temperature drying hood 4 includes a hood body 401, a movable plate 402 and a waste heat blowing air pipe 403. A heat storage cavity 404 is provided inside the hood body 401. A movable plate 402 is slidably provided inside the hood body 401 below the heat storage cavity 404. A waste heat blowing air pipe 403 is provided at the bottom of the movable plate 402. The waste heat blowing air pipe 403 is provided with multiple groups, and the upper ends of the multiple groups of waste heat blowing air pipes 403 are connected to the heat storage cavity 404 through the bellows 405. The utility model configures the low-temperature drying hood 4 to consist of a hood body 401, a movable plate 402, a waste heat blowing air pipe 403, a heat storage cavity 404 and a bellows 405, so that the height of the air outlet position of the waste heat blowing air pipe 403 can be changed by using the sliding movable plate 402, so as to dry the sludge from different heights.

[0024] The scattering claw plate 7 includes a disc body 701, a mounting column 702 and a scattering claw rod 703. The disc body 701 is mounted at the lower end of the driving shaft 8. The bottom of the disc body 701 is provided with a mounting column 702. The mounting column 702 is provided in multiple groups. The bottoms of multiple groups of mounting columns 702 are provided with scattering claw rods 703. The scattering claw rods 703 are provided in multiple groups. In the utility model, multiple groups of driving shafts 8 are provided with gears, and the gears on adjacent driving shafts are connected by chains (this is the prior art). One group of driving shafts 8 is connected to the output end of the driving motor 9. When the driving motor 9 is started, the multiple groups of driving shafts 8 rotate synchronously, and then the multiple groups of scattering claw plates 7 rotate synchronously.

[0025] Baffles 10 are provided on the front and rear sides of the cover bodies 401 of the adjacent low-temperature drying hoods 4. The baffles 10 are located on both sides of the belt conveyor 2. A gap is formed between the baffles 10 and the two side walls of the belt conveyor 2, and the two ends of the baffles 10 are respectively connected to the side walls of the cover bodies 401 of the adjacent low-temperature drying hoods 4. The baffles 10 can prevent the sludge from being beaten out of the belt conveyor 2 when the scrambling mechanism is working.

[0026] A sludge flattening mechanism 11 is provided above the inlet end of the belt conveyor 2, a cover 12 is provided on one side of the sludge flattening mechanism 11, a discharge pipe at the lower end of the feed hopper 3 leads to the inside of the cover 12, the sludge flattening mechanism 11 is movably connected to the cross beam 501 on the frame 5, the cover 12 is fixedly connected to the cross beam 501 on the frame 5, a roller 13 is provided at the bottom of the cover 12, and the roller 13 is in rolling contact with the top of the belt conveyor 2. The sludge flattening mechanism 11 includes an adjusting rod 1101 and a flat plate 1102. The crossbeam 501 is provided with a pipe sleeve, and the adjusting rod 1101 is movably provided in the pipe sleeve. The adjusting rod 1101 is provided with an adjusting hole 1103, and the adjusting hole 1103 is provided with a plurality of holes along the length direction of the adjusting rod 1101. The pipe sleeve is provided with an adjusting bolt 1104, and the adjusting bolt 1104 is connected with the adjusting hole 1103. The lower end of the adjusting rod 1101 is provided with a flat plate 1102, and the length of the flat plate 1102 is adapted to the width of the belt conveyor 2. By connecting the adjusting bolt 1104 with the adjusting holes 1103 at different positions, the distance between the bottom of the flat plate 1102 and the top of the belt conveyor 2 can be adjusted, so that the sludge can be flattened into different thicknesses and then laid on the belt conveyor 2. The enclosure 12 can prevent the sludge blocked by the flat plate 1102 from falling off the belt conveyor 2.

[0027] The utility model sets a plurality of groups of low-temperature drying hoods 4 inside the drying box 1, and sets a breaking mechanism between adjacent low-temperature drying hoods 4. The breaking claw plate 7, the driving shaft 8 and the driving motor 9 of the breaking mechanism cooperate with each other to break up the sludge, which is beneficial to fully and efficiently dry the broken sludge by using the low-temperature drying hood 4, avoids the problem of uneven drying, and thus improves the drying quality and efficiency. The utility model sets a sludge flattening mechanism 11 above the inlet end of the belt conveyor 2, and uses the spreading plate 1102 to flatten the accumulated sludge coming out of the feed hopper 3 into a set thickness and then spread it on the belt conveyor 2, and then enters the drying box 1 to be efficiently dried, avoiding the problem of incomplete drying caused by excessive sludge accumulation.

[0028] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A belt-type sludge low-temperature drying equipment utilizing waste heat, characterized in that: The invention comprises a drying box (1), a belt conveyor (2), a feed hopper (3), a low-temperature drying air hood (4) and a dispersing mechanism, wherein a belt conveyor (2) is provided inside the drying box (1), both ends of the belt conveyor (2) extend out of the drying box (1), a feed hopper (3) is provided at the inlet end of the belt conveyor (2) through a frame (5), a low-temperature drying air hood (4) is provided inside the drying box (1), a plurality of groups of the low-temperature drying air hoods (4) are provided with waste heat air intake pipes (6) at the top of the plurality of groups of the low-temperature drying air hoods (4), the waste heat air intake pipes (6) are connected to an external waste heat exhaust pipe, and a dispersing mechanism is provided inside the drying box (1) between adjacent low-temperature drying air hoods (4); The dispersing mechanism comprises a dispersing claw plate (7) and a driving shaft (8). A driving shaft (8) is rotatably provided inside the drying box (1) between the adjacent low-temperature drying air hoods (4). A plurality of driving shafts (8) are provided along the width direction of the belt conveyor (2). The lower ends of the plurality of driving shafts (8) are all provided with a dispersing claw plate (7). The upper ends of the plurality of driving shafts (8) penetrate through the top of the drying box (1) and are driven by a driving motor (9).

2. The belt-type sludge low-temperature drying equipment utilizing waste heat according to claim 1 is characterized in that: The low-temperature drying air hood (4) comprises a hood body (401), a movable plate (402) and a waste heat blowing air duct (403); a heat storage chamber (404) is provided inside the hood body (401); a movable plate (402) is slidably provided inside the hood body (401) below the heat storage chamber (404); a waste heat blowing air duct (403) is provided at the bottom of the movable plate (402); a plurality of groups of waste heat blowing air ducts (403) are provided, and the upper ends of the plurality of groups of waste heat blowing air ducts (403) are connected to the heat storage chamber (404) through a bellows (405).

3. The belt-type low-temperature sludge drying equipment utilizing waste heat according to claim 1 is characterized in that: The scattering claw disc (7) comprises a disc body (701), a mounting column (702) and a scattering claw rod (703); the disc body (701) is mounted on the lower end of the driving shaft (8); the bottom of the disc body (701) is provided with a mounting column (702); the mounting column (702) is provided in multiple groups; the bottoms of the multiple groups of mounting columns (702) are all provided with a scattering claw rod (703); the scattering claw rod (703) is provided in multiple groups.

4. The belt-type sludge low-temperature drying equipment utilizing waste heat according to claim 2 is characterized in that: Baffles (10) are provided on the front and rear sides of the hood bodies (401) of adjacent low-temperature drying hoods (4); the baffles (10) are located on both sides of the belt conveyor (2); a gap is formed between the baffles (10) and the side walls of the belt conveyor (2); and both ends of the baffles (10) are respectively connected to the side walls of the hood bodies (401) of the adjacent low-temperature drying hoods (4).

5. The belt-type sludge low-temperature drying equipment utilizing waste heat according to claim 1 is characterized in that: A sludge flattening mechanism (11) is provided above the inlet end of the belt conveyor (2); a shroud (12) is provided on one side of the sludge flattening mechanism (11); a discharge pipe at the lower end of the feed hopper (3) leads to the interior of the shroud (12); the sludge flattening mechanism (11) is movably connected to a crossbeam (501) on the frame (5); the shroud (12) is fixedly connected to the crossbeam (501) on the frame (5); a roller (13) is provided at the bottom of the shroud (12); and the roller (13) is in rolling contact with the top of the belt conveyor (2).

6. The belt-type low-temperature sludge drying equipment utilizing waste heat according to claim 5, characterized in that: The sludge flattening mechanism (11) comprises an adjusting rod (1101) and an expanding plate (1102); a pipe sleeve is provided on the crossbeam (501); an adjusting rod (1101) is movably provided in the pipe sleeve; an adjusting hole (1103) is provided on the adjusting rod (1101); a plurality of adjusting holes (1103) are provided along the length direction of the adjusting rod (1101); an adjusting bolt (1104) is provided on the pipe sleeve; the adjusting bolt (1104) is connected to the adjusting hole (1103); an expanding plate (1102) is provided at the lower end of the adjusting rod (1101); the length of the expanding plate (1102 is adapted to the width of the belt conveyor (2).

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