Environment-friendly rotary dryer special for industrial sludge

Abstract

The utility model provides an environment-friendly industrial sludge special rotary dryer which comprises a middle driving mechanism, a crushing mechanism for dispersing sludge is arranged in the middle driving mechanism, and a first drying mechanism for drying the sludge and a second drying mechanism for drying the sludge are arranged at the two ends of the crushing mechanism respectively. A front driving mechanism for providing power is arranged on the outer side of one end, deviating from the crushing mechanism, of the drying mechanism I, a rear driving mechanism for providing power is arranged on the outer side of one end, deviating from the crushing mechanism, of the drying mechanism II, and an air drying mechanism for assisting in drying sludge penetrates through the middles of the drying mechanism I, the crushing mechanism and the drying mechanism II. According to the utility model, the crushing cylinder in the crushing mechanism drives the supporting rod to rotate, and the sludge can be dried and conveyed by the drying mechanism I and the drying mechanism II, so that the transverse strips and the vertical strips which are distributed in a grid manner continuously cut the sludge, large sludge is cut into small sludge, the drying heating area of the sludge is increased, and the drying efficiency is improved. Therefore, the sludge drying effect and drying efficiency of the rotary dryer can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment equipment, in particular to an environmentally friendly rotary dryer special for industrial sludge. Background Art

[0002] Sludge drying is a process of evaporating the water in sludge to make it dry and solid. Sludge is usually generated by wastewater treatment plants, industrial production processes, or waste or pollutants, and contains a large amount of water and organic matter. The use of drying technology can effectively reduce the volume and weight of sludge and improve its stability and treatability.

[0003] At present, sludge drying is usually carried out by rotary drying, which is to put the wet sludge into a heating cylinder for rotation and heating, and then dry the sludge by heating gas or electric heater;

[0004] However, the above-mentioned sludge rotary drying still has the following defects in the actual drying process:

[0005] 1. During the rotary drying process of sludge, wet sludge often sticks together into lumps during drying. It is difficult to analyze the water inside the lumps of sludge, which is not conducive to the drying efficiency of the sludge.

[0006] 2. When the sludge is being dried, the steam formed by the evaporation of water will gather in the heating cylinder. The air containing moisture will affect the drying efficiency of the sludge.

[0007] In summary, there is a need for a special rotary dryer for sludge that can efficiently dry sludge. Utility Model Content

[0008] In view of the deficiencies in the prior art, the utility model provides an environmentally friendly rotary dryer specifically for industrial sludge, which solves the problems mentioned in the background technology.

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] An environmentally friendly rotary dryer for industrial sludge, comprising a middle driving mechanism, a crushing mechanism for dispersing sludge is arranged inside the middle driving mechanism, a drying mechanism 1 for drying sludge and a drying mechanism 2 for drying sludge are arranged at both ends of the crushing mechanism, a front driving mechanism for providing power is arranged outside the end of the drying mechanism 1 away from the crushing mechanism, a rear driving mechanism for providing power is arranged outside the end of the drying mechanism 2 away from the crushing mechanism, and an air drying mechanism for assisting in drying sludge is arranged through the middle of the drying mechanism 1, the crushing mechanism and the drying mechanism 2;

[0011] The middle driving mechanism includes a middle driving box, a first motor and a first driving wheel. The middle driving box is provided with a first motor in a ring arrangement inside. The output end of the first motor is provided with a first driving wheel. The crushing mechanism includes a crushing barrel, a retaining barrel, a support rod, horizontal bars and vertical bars. The crushing barrel is arranged through the middle of the middle driving box. A retaining barrel rotatably connected to the middle driving box is provided on the outside of the crushing barrel. The outside of the retaining barrel contacts the outside of the first driving wheel. A crushing assembly for dispersing sludge is provided on the inside of the crushing barrel. The crushing assembly is distributed in a ring arrangement on the inside of the crushing barrel. The crushing assembly consists of a support rod, horizontal bars and vertical bars. The support rod is mirrored on the inside of the crushing barrel. A plurality of horizontal bars and vertical bars are provided on the side of the support rod. The horizontal bars and vertical bars are distributed in a grid.

[0012] Furthermore, the front drive mechanism includes a front drive box, a second motor, a second drive wheel, a front mounting plate and a feed pipe. The second motor is arranged in a ring inside the front drive box, and the output end of the second motor is provided with a second drive wheel that drives the drying mechanism to rotate. A front mounting plate is provided on the side of the front drive box away from the drying mechanism, and a feed pipe is penetrated inside the front mounting plate.

[0013] Furthermore, the drying mechanism includes a drying cylinder, spiral blades, a heating cylinder and a heating tube. One end of the drying cylinder is located inside the front drive box. The drying cylinder is rotatably connected to the front drive box. The outer side of the drying cylinder is in contact with the outer side of the second drive wheel. The inner side of the drying cylinder is provided with spiral blades. The outer side of the drying cylinder is provided with a heating cylinder. A heating tube is provided at the gap between the heating cylinder and the drying cylinder.

[0014] Furthermore, the rear drive mechanism includes a rear drive box, a third motor, a third drive wheel, a rear mounting plate and a discharge port. The third motor is arranged in a ring inside the rear drive box, and the output end of the third motor is provided with a third drive wheel that drives the drying mechanism 2 to rotate. A rear mounting plate is provided on the side of the rear drive box away from the drying mechanism 2, and a discharge port is opened at the bottom of the rear mounting plate.

[0015] Furthermore, the second drying mechanism includes a second drying cylinder, a feeding plate, a protrusion, a second heating cylinder and a second heating tube. One end of the second drying cylinder is located inside the rear driving box. The second drying cylinder is rotatably connected to the rear driving box. A feeding plate and a protrusion are provided on the inner side of the second drying cylinder. Multiple groups of feeding plates and protrusions are arranged in a ring on the inner side of the second drying cylinder. The feeding plate is inclined. A second heating cylinder is provided on the outer side of the second drying cylinder. A second heating tube is provided at the gap between the second heating cylinder and the second drying cylinder.

[0016] Furthermore, the crushing cylinder, the drying cylinder 1 and the drying cylinder 2 are in rotational contact with each other in sequence, and the inner diameters of the crushing cylinder, the drying cylinder 1 and the drying cylinder 2 are the same.

[0017] Furthermore, the air drying mechanism includes an air box and a partition, the air box is arranged outside the front drive box and the rear drive box, a partition is arranged in the middle of the inner side of the air box, an air inlet and an air outlet are opened on the side of the partition, an air supply pump is arranged at the bottom of the inner side of the air box, a plurality of heating rods are arranged between the air supply pump and the partition, and an exhaust pump is arranged on the top surface of the partition;

[0018] The air-drying mechanism also includes an air supply duct and an exhaust duct. The two ends of the air supply duct are respectively connected to the side of the front drive box and the side of the rear drive box, the interior of the air supply duct is communicated with the air supply pump, and a plurality of air outlets are evenly spaced at the bottom of the air supply duct. The exhaust duct is located above the air supply duct, and the two ends of the exhaust duct are connected to the side of the front drive box and the side of the rear drive box, the interior of the exhaust duct is communicated with the exhaust pump, and an exhaust port is provided on the bottom of the exhaust duct.

[0019] Furthermore, the heat collecting hood is arranged between the front driving box and the rear driving box, the heat collecting hood is located on the side of the air supply pipe, and a plurality of heating lamp tubes are arranged inside the heat collecting hood.

[0020] The utility model provides an environmentally friendly rotary dryer for industrial sludge. Compared with the prior art, it has the following beneficial effects:

[0021] The crushing cylinder in the crushing mechanism drives the support rod to rotate, so that the sludge can be dried and transported in the drying mechanism one and the drying mechanism two, so that the horizontal and vertical bars of the grid distribution continuously cut the sludge, and the large pieces of sludge are cut into small pieces, thereby increasing the drying and heating area of ​​the sludge, thereby facilitating the improvement of the drying effect and drying efficiency of the rotary dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The utility model shows a structural schematic diagram of an environmentally friendly industrial sludge special rotary dryer;

[0024] Figure 2 The structure diagram of the drying mechanism 1 of the utility model is shown;

[0025] Figure 3 The structure diagram of the drying mechanism 2 of the utility model is shown;

[0026] Figure 4 A schematic cross-sectional view of the overall side view of the present invention is shown;

[0027] Figure 5The structure diagram of the air-drying mechanism of the utility model is shown;

[0028] Figure 6 The utility model is shown Figure 3 The enlarged structural diagram at A in the middle;

[0029] As shown in the figure: 1. Middle drive mechanism; 11. Middle drive box; 12. First motor; 13. First drive wheel; 2. Front drive mechanism; 21. Front drive box; 22. Second motor; 23. Second drive wheel; 24. Front mounting plate; 25. Feed pipe; 3. Rear drive mechanism; 31. Rear drive box; 32. Third motor; 33. Third drive wheel; 34. Rear mounting plate; 35. Discharge port; 4. Drying mechanism 1; 41. Drying cylinder 1; 42. Spiral blade; 43. Heating cylinder 1; 44. Heating tube 1; 5. Crushed material Mechanism; 51. Crushing cylinder; 52. Stop cylinder; 53. Support rod; 54. Horizontal bar; 55. Vertical bar; 6. Drying mechanism II; 61. Drying cylinder II; 62. Feeding plate; 63. Bump; 64. Heating cylinder II; 65. Heating tube II; 7. Air drying mechanism; 71. Air box; 72. Partition; 73. Air inlet; 74. Air outlet; 75. Heating rod; 76. Air supply pump; 77. Air supply pipe; 771. Air outlet; 78. Exhaust pump; 79. Exhaust pipe; 791. Exhaust outlet; 8. Heat collecting hood; 81. Heating lamp. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1

[0032] In order to solve the technical problems in the background technology, the following environmentally friendly industrial sludge special rotary dryer is provided:

[0033] Combination Figure 1-Figure 6As shown, the utility model provides an environmentally friendly rotary dryer for industrial sludge, including a middle driving mechanism 1, a crushing mechanism 5 for dispersing sludge is arranged inside the middle driving mechanism 1, a drying mechanism 1 4 and a drying mechanism 2 6 for drying sludge are arranged at both ends of the crushing mechanism 5, a front driving mechanism 2 for providing power is arranged on the outer side of the end of the drying mechanism 1 4 away from the crushing mechanism 5, a rear driving mechanism 3 for providing power is arranged on the outer side of the end of the drying mechanism 2 6 away from the crushing mechanism 5, and an air-drying mechanism 7 for assisting in drying sludge is penetrated through the middle of the drying mechanism 1 4, the crushing mechanism 5 and the drying mechanism 2 6; the middle driving mechanism 1 includes a middle driving box 11, a first motor 12 and a first driving wheel 13, the first motor 12 is arranged in a ring inside the middle driving box 11, and the output end of the first motor 12 is provided with a first driving wheel 13, the crushing mechanism 5 includes a crushing barrel 51, a retaining barrel 52, support rods 53, horizontal bars 54 and vertical bars 55, the crushing barrel 51 is arranged through the middle part of the middle driving box 11, the outer side of the crushing barrel 51 is provided with a retaining barrel 52 which is rotatably connected to the middle driving box 11, the outer side of the retaining barrel 52 is in contact with the outer side of the first driving wheel 13, the inner side of the crushing barrel 51 is provided with a crushing assembly for dispersing sludge, the crushing assembly is arranged in a ring inside the crushing barrel 51, the crushing assembly is composed of support rods 53, horizontal bars 54 and vertical bars 55, the support rods 53 are arranged in a mirror image on the inner side of the crushing barrel 51, and a plurality of horizontal bars 54 and vertical bars 55 are arranged on the side of the support rods 53, and the horizontal bars 54 and the vertical bars 55 are arranged in a grid; through the crushing assembly inside the crushing barrel 51, when the sludge passes through the crushing barrel 51, the horizontal bars 54 and the vertical bars 55 arranged in the grid can continuously cut the sludge, so as to achieve the effect of cutting the sludge, so that the drying and heating area of ​​the sludge can be increased, and the water in the sludge can be analyzed out conveniently;

[0034] In this embodiment, the front drive mechanism 2 includes a front drive box 21, a second motor 22, a second drive wheel 23, a front mounting plate 24 and a feed pipe 25. The front drive box 21 is provided with a second motor 22 in a ring array, and the output end of the second motor 22 is provided with a second drive wheel 23 for driving the drying mechanism 4 to rotate. The front drive box 21 is provided with a front mounting plate 24 on the side away from the drying mechanism 4, and a feed pipe 25 is penetrated inside the front mounting plate 24; the second motor 22 arranged inside the front drive mechanism 2 can drive the second drive wheel 23 to rotate, so as to provide power for the rotation of the drying mechanism 4;

[0035] In this embodiment, the drying mechanism 4 includes a drying cylinder 41, a spiral blade 42, a heating cylinder 43 and a heating tube 44. One end of the drying cylinder 41 is located inside the front driving box 21. The drying cylinder 41 is rotatably connected to the front driving box 21. The outer side of the drying cylinder 41 contacts the outer side of the second driving wheel 23. The inner side of the drying cylinder 41 is provided with a spiral blade 42. The outer side of the drying cylinder 41 is provided with a heating cylinder 43. A heating tube 44 is provided at the interval between the heating cylinder 43 and the drying cylinder 41. The spiral blade 42 provided inside the drying cylinder 41 can continuously transport the sludge to be dried. The setting of the heating tube 44 can increase the temperature of the drying cylinder 41 to achieve the purpose of drying the sludge.

[0036] In this embodiment, the rear drive mechanism 3 includes a rear drive box 31, a third motor 32, a third drive wheel 33, a rear mounting plate 34 and a discharge port 35. The rear drive box 31 is provided with a third motor 32 in a ring array inside, and the output end of the third motor 32 is provided with a third drive wheel 33 that drives the drying mechanism 2 6 to rotate. The rear drive box 31 is provided with a rear mounting plate 34 on the side away from the drying mechanism 2 6, and a discharge port 35 is provided at the bottom of the rear mounting plate 34; the third motor 32 in the rear drive mechanism 3 can drive the third drive wheel 33 to rotate, so that the drying mechanism 2 6 can rotate and dry the sludge;

[0037] In this embodiment, the drying mechanism 2 6 includes a drying cylinder 2 61, a feeding plate 62, a protrusion 63, a heating cylinder 2 64 and a heating tube 2 65. One end of the drying cylinder 2 61 is located inside the rear drive box 31. The drying cylinder 2 61 is rotatably connected to the rear drive box 31. A feeding plate 62 and a protrusion 63 are arranged on the inside of the drying cylinder 2 61. The feeding plate 62 and the protrusion 63 are arranged in a ring on the inside of the drying cylinder 2 61 in multiple groups. The feeding plate 62 is arranged at an angle. A heating cylinder 2 is arranged on the outside of the drying cylinder 2 61. 64, a heating tube 65 is provided at the interval between the heating cylinder 64 and the drying cylinder 61; the heating tube 65 can increase the temperature of the drying cylinder 61, so that the drying cylinder 61 can dry the sludge; the feeding plate 62 provided inside the drying cylinder 61 can convey the dried sludge when the drying cylinder 61 rotates, and at the same time, the feeding plate 62 and the protrusion 63 arranged in an annular arrangement can scatter the dried sludge, so that the sludge is dried and heated more evenly, thereby facilitating the improvement of the drying efficiency of the sludge;

[0038] As an improvement of the above scheme, the crushing cylinder 51, the drying cylinder 1 41 and the drying cylinder 2 61 are rotated and contacted in sequence, and the inner diameters of the crushing cylinder 51, the drying cylinder 1 41 and the drying cylinder 2 61 are the same; through the mutual rotation between the crushing cylinder 51, the drying cylinder 1 41 and the drying cylinder 2 61, it is convenient to adjust the rotation speed according to the demand of sludge drying when the sludge is dried;

[0039] When the rotary dryer is used, the sludge to be dried is first fed into the drying mechanism 1 4 through the feed pipe 25 in the front driving mechanism 2. After the drying mechanism 1 4 preliminarily dries the sludge, the sludge is transported and sent to the crushing mechanism 5 for shredding. Then, the sludge is moved from the crushing mechanism 5 to the drying mechanism 2 6 for further drying. After the sludge is dried, the dried sludge is discharged from the discharge port 35 in the rear driving mechanism 3.

[0040] The crushing cylinder 51 in the crushing mechanism 5 drives the support rod 53 to rotate, so that the sludge can be dried and transported in the drying mechanism 1 4 and the drying mechanism 2 6, so that the horizontal bars 54 and the vertical bars 55 distributed in the grid continuously cut the sludge, and the large pieces of sludge are cut into small pieces, thereby increasing the drying and heating area of ​​the sludge, thereby facilitating the improvement of the drying effect and drying efficiency of the rotary dryer.

[0041] Embodiment 2

[0042] like Figure 1-Figure 2 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0043] In order to enable the rotary dryer to dry the sludge more efficiently, this embodiment provides the following design:

[0044] The air drying mechanism 7 includes an air box 71 and a partition 72. The air box 71 is arranged on the outside of the front drive box 21 and the outside of the rear drive box 31. A partition 72 is arranged in the middle of the inner side of the air box 71. An air inlet 73 and an air outlet 74 are opened on the side of the partition 72. An air supply pump 76 is arranged at the bottom of the inner side of the air box 71. A plurality of heating rods 75 are arranged between the air supply pump 76 and the partition 72. An exhaust pump 78 is arranged on the top surface of the partition 72. The air supply pump 76 and the exhaust pump 78 arranged inside the air box 71 can be used to send air into the rotary dryer or to extract air from the rotary dryer. The setting of the heating rod 75 can heat the air entering the rotary dryer so that the hot air can contact the sludge and take away the moisture inside the sludge.

[0045] The air drying mechanism 7 also includes an air supply pipe 77 and an exhaust pipe 79. The two ends of the air supply pipe 77 are respectively connected to the side of the front drive box 21 and the side of the rear drive box 31. The interior of the air supply pipe 77 is communicated with the air supply pump 76. A plurality of air outlets 771 are arranged at equal intervals on the bottom surface of the air supply pipe 77. The exhaust pipe 79 is located above the air supply pipe 77. The two ends of the exhaust pipe 79 are connected to the side of the front drive box 21 and the side of the rear drive box 31. The interior of the exhaust pipe 79 is communicated with the exhaust pump 78. An exhaust port 791 is arranged on the bottom surface of the exhaust pipe 79. The hot air delivered by the air supply pump 76 can be blown onto the sludge to be dried through the plurality of air outlets 771 arranged at the bottom of the air supply pipe 77. The arrangement of the exhaust port 791 facilitates the exhaust of the humid air generated by the sludge drying by the exhaust pump 78.

[0046] In this embodiment, the heat collecting hood 8 is arranged between the front driving box 21 and the rear driving box 31, and the heat collecting hood 8 is located on the side of the air supply pipe 77. A plurality of heating lamps 81 are arranged inside the heat collecting hood 8. Through the heating lamps 81 arranged inside the heat collecting hood 8, the sludge can be baked during the sludge drying process, thereby achieving the purpose of improving the sludge drying efficiency.

[0047] The working principle and use process of this utility model:

[0048] When using:

[0049] First, the sludge to be dried is fed into the rotary dryer through the feed pipe 25 in the front driving mechanism 2, and then the sludge falls into the drying cylinder 41 in the drying mechanism 4. At this time, the second motor 22 drives the second driving wheel 23 to rotate, so that the drying cylinder 41 rotates. The rotating drying cylinder 41 can transport the sludge through the internal spiral blades 42. At this time, the heating tube 44 heats the drying cylinder 41, so that the drying cylinder 41 is heated, and the heated drying cylinder 41 can evaporate and dry the sludge;

[0050] The sludge dried by the drying drum 41 will be sent to the inner side of the crushing drum 51 of the crushing mechanism 5. At this time, the first motor 12 in the middle driving mechanism 1 drives the crushing drum 51 to rotate through the first driving wheel 13, and the horizontal bars 54 and vertical bars 55 distributed in the grid inside the crushing drum 51 can cut the dried sludge into pieces, thereby increasing the heating and drying area of ​​the sludge.

[0051] Then the sludge will enter the drying cylinder 61 of the drying mechanism 6. The drying cylinder 61 rotates under the drive of the third motor 32 and the third driving wheel 33 in the rear driving mechanism 3. The heating tube 65 outside the drying cylinder 61 heats the drying cylinder 61, so that the drying cylinder 61 can further dry the sludge. Then, the feeding plates 62 arranged in an inclined ring inside the drying cylinder 61 cooperate with the protrusions 63 to transport the sludge, and the sludge is discharged from the discharge port 35 after being dried.

[0052] During the drying process:

[0053] The exhaust pump 78 and the air supply pump 76 in the air drying mechanism 7 work, and the air supply pump 76 heats the outside air through the heating rod 75 and then sends it into the air supply pipe 77. Then the hot air will be blown onto the sludge from the air outlet 771, which can increase the temperature of the sludge and take away the moisture on the surface of the sludge. The heating lamp 81 inside the heat collecting cover 8 will also bake the sludge when the sludge is dried.

[0054] Then the exhaust port 791 below the exhaust pipe 79 will extract the moist air generated by the sludge drying, thus facilitating the maintenance of the sludge drying efficiency.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An environmentally friendly rotary dryer for industrial sludge, characterized by: The invention comprises a middle driving mechanism (1), wherein a crushing mechanism (5) for dispersing sludge is arranged inside the middle driving mechanism (1), a drying mechanism (4) for drying sludge and a drying mechanism (6) for drying sludge are arranged at two ends of the crushing mechanism (5), a front driving mechanism (2) for providing power is arranged on the outer side of one end of the drying mechanism (4) away from the crushing mechanism (5), a rear driving mechanism (3) for providing power is arranged on the outer side of one end of the drying mechanism (6) away from the crushing mechanism (5), and an air drying mechanism (7) for assisting in drying sludge is arranged through the middle of the drying mechanism (4), the crushing mechanism (5) and the drying mechanism (6); The middle driving mechanism (1) comprises a middle driving box (11), a first motor (12) and a first driving wheel (13); the first motor (12) is arranged in a ring inside the middle driving box (11); the first driving wheel (13) is arranged at the output end of the first motor (12); the crushing mechanism (5) comprises a crushing barrel (51), a blocking barrel (52), a support rod (53), a horizontal bar (54) and a vertical bar (55); the crushing barrel (51) is arranged through the middle of the middle driving box (11); the outer side of the crushing barrel (51) is provided with a 11) a retaining cylinder (52) rotatably connected, the outer side of the retaining cylinder (52) contacts the outer side of the first driving wheel (13), the inner side of the crushing cylinder (51) is provided with a crushing assembly for dispersing sludge, the crushing assembly is arranged in a ring inside the crushing cylinder (51), the crushing assembly is composed of a support rod (53), a horizontal bar (54) and a vertical bar (55), the support rod (53) is arranged in a mirror image on the inner side of the crushing cylinder (51), and a plurality of horizontal bars (54) and vertical bars (55) are arranged on the side of the support rod (53), and the horizontal bars (54) and the vertical bars (55) are arranged in a grid.

2. The environmentally friendly rotary dryer for industrial sludge according to claim 1 is characterized by: The front drive mechanism (2) comprises a front drive box (21), a second motor (22), a second drive wheel (23), a front mounting plate (24) and a feed pipe (25); the second motor (22) is arranged in a ring inside the front drive box (21); the output end of the second motor (22) is provided with a second drive wheel (23) for driving a drying mechanism (4) to rotate; a front mounting plate (24) is provided on a side of the front drive box (21) away from the drying mechanism (4); and the feed pipe (25) is penetrated inside the front mounting plate (24).

3. The environmentally friendly rotary dryer for industrial sludge according to claim 2 is characterized by: The drying mechanism (4) comprises a drying cylinder (41), spiral blades (42), a heating cylinder (43) and a heating tube (44); one end of the drying cylinder (41) is located inside the front driving box (21); the drying cylinder (41) is rotatably connected to the front driving box (21); the outer side of the drying cylinder (41) contacts the outer side of the second driving wheel (23); the inner side of the drying cylinder (41) is provided with a spiral blade (42); the outer side of the drying cylinder (41) is provided with a heating cylinder (43); and a heating tube (44) is provided at the interval between the heating cylinder (43) and the drying cylinder (41).

4. The environmentally friendly rotary dryer for industrial sludge according to claim 1 is characterized by: The rear drive mechanism (3) comprises a rear drive box (31), a third motor (32), a third drive wheel (33), a rear mounting plate (34) and a discharge port (35); the third motor (32) is arranged in a ring inside the rear drive box (31); the output end of the third motor (32) is provided with a third drive wheel (33) for driving the second drying mechanism (6) to rotate; a rear mounting plate (34) is provided on a side of the rear drive box (31) away from the second drying mechanism (6); and a discharge port (35) is provided at the bottom of the rear mounting plate (34).

5. The environmentally friendly rotary dryer for industrial sludge according to claim 4 is characterized by: The second drying mechanism (6) comprises a second drying cylinder (61), a feeding plate (62), a convex block (63), a second heating cylinder (64) and a second heating tube (65). One end of the second drying cylinder (61) is located inside the rear driving box (31). The second drying cylinder (61) is rotatably connected to the rear driving box (31). A feeding plate (62) and a convex block (63) are arranged inside the second drying cylinder (61). A plurality of feeding plates (62) and convex blocks (63) are arranged in a circle inside the second drying cylinder (61). The feeding plate (62) is arranged in an inclined manner. A second heating cylinder (64) is arranged outside the second drying cylinder (61). A second heating tube (65) is arranged at the interval between the second heating cylinder (64) and the second drying cylinder (61).

6. The environmentally friendly rotary dryer for industrial sludge according to claim 1 is characterized by: The crushing cylinder (51), the drying cylinder one (41) and the drying cylinder two (61) are in rotational contact with each other in sequence, and the inner diameters of the crushing cylinder (51), the drying cylinder one (41) and the drying cylinder two (61) are the same.

7. The environmentally friendly rotary dryer for industrial sludge according to claim 1 is characterized by: The air drying mechanism (7) comprises an air box (71) and a partition (72), wherein the air box (71) is arranged on the outside of the front drive box (21) and the outside of the rear drive box (31), a partition (72) is arranged in the middle of the inner side of the air box (71), an air inlet (73) and an air outlet (74) are opened on the side of the partition (72), an air supply pump (76) is arranged at the bottom of the inner side of the air box (71), a plurality of heating rods (75) are arranged between the air supply pump (76) and the partition (72), and an exhaust pump (78) is arranged on the top surface of the partition (72); The air drying mechanism (7) further comprises an air supply pipe (77) and an air exhaust pipe (79); the two ends of the air supply pipe (77) are respectively connected to the side of the front drive box (21) and the side of the rear drive box (31); the interior of the air supply pipe (77) is communicated with the air supply pump (76); a plurality of air outlets (771) are evenly spaced on the bottom surface of the air supply pipe (77); the air exhaust pipe (79) is located above the air supply pipe (77); the two ends of the air exhaust pipe (79) are connected to the side of the front drive box (21) and the side of the rear drive box (31); the interior of the air exhaust pipe (79) is communicated with the air exhaust pump (78); and an air exhaust port (791) is provided on the bottom surface of the air exhaust pipe (79).

8. The environmentally friendly rotary dryer for industrial sludge according to claim 1 is characterized by: The heat collecting cover (8) is arranged between the front driving box (21) and the rear driving box (31), the heat collecting cover (8) is located on the side of the air supply pipe (77), and a plurality of heating lamp tubes (81) are arranged inside the heat collecting cover (8).

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