Electromagnetic heating rotary kiln reverse double-transmission oily sludge thermal desorption equipment

Abstract

The invention provides electromagnetic heating rotary kiln reverse double-transmission oily sludge thermal desorption equipment which comprises a supporting heat preservation mechanism, a first heat preservation pipe, a second heat preservation pipe and a third heat preservation pipe which are sequentially and coaxially arranged from right to left. A feeding pipe is arranged on the first thermal insulation pipe and is used for conveying oily sludge into the first thermal insulation pipe; and the rotating mechanism comprises a calcining roller, and the calcining roller is coaxially arranged in the first thermal insulation pipe. During use, the calcining roller is driven by a transmission mechanism, meanwhile, a mud scraping piece is arranged on the outer surface of a transmission rod, the outer surface of the mud scraping piece is attached to the inner wall of the calcining roller, and the mud scraping piece and the calcining roller are driven by a transmission motor to rotate reversely; and the sludge scraping piece is in the shape of a sheet block, so that the effects of preventing the oil sludge from being attached, improving the heating uniformity and improving the heat loss resistance of the sludge scraping piece are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of rotary kilns, in particular to an electromagnetic heating rotary kiln reverse double-drive oily sludge thermal desorption device. Background Art

[0003] Patent Publication No.: CN116177844A published a Chinese invention patent entitled "A Reverse Dual-Drive Thermal Desorption Equipment for Oily Sludge with Electromagnetic Heating Rotary Kiln", which includes a load-bearing shell, which includes a frame and two sets of sealing mechanisms, and the two sets of sealing mechanisms are respectively arranged at the two ends of the inner wall of the frame; a rotating conveying assembly is rotatably interspersed in the middle of the frame, and the rotating conveying assembly includes a processing cylinder, a feeding cylinder, a discharging cylinder and a screw shaft mechanism, and the rotating mechanism of the screw shaft mechanism is interspersed in the middle of the processing cylinder; a first driving mechanism and a second driving mechanism are respectively arranged at both ends of the rotating conveying assembly; the first driving mechanism includes a sprocket mechanism; the second driving mechanism includes a spiral frequency conversion motor.

[0004] The rotary kiln and built-in spiral reverse double transmission structure designed for the above-mentioned sludge treatment device are used in sludge treatment to prevent the sludge from sticking to the wall of the inner kiln body, and the sludge attached to the inner wall of the treatment cylinder is scraped off by the brush mechanism, thereby preventing the sludge from sticking to the wall of the inner kiln body.

[0005] However, when the rotary kiln is working, the temperature inside is high, and the bristles of the brush are relatively soft. In a high temperature environment, a single bristle is easily melted and damaged by the high temperature, resulting in a failure to achieve the corresponding cleaning effect.

[0006] To this end, the present application proposes an electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment to solve the problem of easy damage to the above-mentioned cleaning components. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment to solve the problem of easy damage of the cleaning components in the prior art.

[0008] In order to achieve the above-mentioned purpose and other related purposes, the present invention provides an electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment, comprising:

[0009] A supporting heat-insulating mechanism, the supporting heat-insulating mechanism comprising a first heat-insulating pipe, a second heat-insulating pipe and a third heat-insulating pipe coaxially arranged in sequence from right to left, wherein the first heat-insulating pipe is provided with a feed pipe for transmitting oil sludge into the interior of the first heat-insulating pipe;

[0010] A rotating mechanism, the rotating mechanism comprising a calcining drum, the calcining drum is coaxially arranged inside the first insulation tube, and the calcining drum is of equal length to the first insulation tube and can rotate inside the first insulation tube, both ends of the calcining drum are provided with driven rings extending to the two ends of the first insulation tube and respectively abutting against the ends of the first insulation tube and the third insulation tube, and the diameter of the driven ring is larger than the first insulation tube;

[0011] A transmission mechanism, which is arranged outside the supporting and heat-insulating mechanism and contacts the driven ring, and is used to drive the calcining drum to rotate;

[0012] An eddy current heating mechanism, the eddy current heating mechanism comprising an eddy current heating ring installed on the inner wall of the second insulation tube and a distributor installed on the outer surface of the second insulation tube, the eddy current heating ring and the distributor are electrically connected, and the calcining drum is eddy-current heated by the eddy current heating ring;

[0013] An oily sludge conveying mechanism, the oily sludge conveying mechanism comprising a transmission motor installed on one side of the first insulation tube, the output shaft of the transmission motor is provided with a transmission rod coaxial with the first insulation tube, the outer surface of the transmission rod is provided with a scraper, and the outer surface of the scraper is in conflict with the inner wall of the calcining drum;

[0014] A recovery mechanism is provided at one end of the third thermal insulation pipe, and an exhaust pipe is provided on the recovery mechanism.

[0015] Preferably, the scraper member includes two support rods, which are respectively arranged at both ends of the middle part of the transmission rod, and the ends of the two support rods jointly support a scraper plate, the edge of the scraper plate is set as a bevel cutting edge, and the outer surface of the scraper plate is in contact with the inner wall of the calcining drum.

[0016] Preferably, a through slot is provided at the center of the scraper blade, and two sides of the through slot are respectively fitted to the ends of the support rod.

[0017] Preferably, a first auger blade and a second auger blade are respectively provided at both ends of the transmission rod, the first auger blade is located inside the third insulation tube, and the outer surface of the first auger blade is in contact with the inner wall of the third insulation tube, the second auger blade is located inside the first insulation tube, and the outer surface of the second auger blade is in contact with the inner wall of the first insulation tube;

[0018] A suspension bracket is arranged on the top of the inner wall of the third thermal insulation pipe, and the end of the transmission rod passes through the suspension bracket and is supported.

[0019] Preferably, a plurality of mud-breaking teeth whose outer surfaces are flush with the second auger blades are equidistantly arranged between the gaps between the second auger blades, and the mud-breaking teeth are located directly below the feed pipe;

[0020] Both ends of the mud breaking teeth are configured to form sharp triangular heads.

[0021] Preferably, both ends of the driven ring are provided with assembly joints, and the inner walls of the first insulation pipe and the third insulation pipe at one end facing the second insulation pipe are provided with limited step platforms;

[0022] The assembly joints at both ends are inserted into the limiting ladders to limit the calcining drum.

[0023] Preferably, the inner wall of the second thermal insulation pipe is provided with a vortex ring installation groove, the inner wall of the vortex ring installation groove is set as a mirror surface, and the eddy current heating ring surrounds the inside of the vortex ring installation groove;

[0024] A gap is left between the inner wall of the eddy current heating ring and the outer surface of the calcining drum;

[0025] The inner wall of the calcining drum is flush with the inner walls of the first insulation tube and the third insulation tube respectively.

[0026] Preferably, a heat insulating member is provided on a side of the transmission motor facing the first insulation tube, and the heat insulating member extends into the interior of the second insulation tube to isolate the heat in the first insulation tube from being transferred to the transmission motor.

[0027] Preferably, the heat insulating member comprises a heat insulating sealing cylinder, the heat insulating sealing cylinder is fixed to the end of the transmission motor, a rotating shaft support tube is arranged at the axis of the heat insulating sealing cylinder, and the transmission rod passes through the axis of the rotating shaft support tube;

[0028] A cooling cavity is provided between the heat-insulating sealing cylinder and the rotating shaft supporting tube, and a circulation pipe interface is provided on the outer surface of the heat-insulating sealing cylinder, and the circulation pipe interface is connected with the interior of the cooling cavity;

[0029] The outer surface of the heat-insulating sealing cylinder is also provided with a flange, and the flange is fixedly connected to the end of the first thermal insulation pipe.

[0030] Preferably, the transmission mechanism comprises a fixed base, a rotary drive motor is arranged on the top of the fixed base, a transmission wheel is arranged on the output shaft of the rotary drive motor, and the outer surface of the transmission wheel is in conflict with the outer surface of the driven ring;

[0031] A support frame is arranged at the bottom of the outer surface of the second insulation pipe, a motor seat is arranged at the bottom of the outer surface of the transmission motor, and the bottoms of the fixed base, the support frame and the motor seat are flush.

[0032] As described above, the electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment of the present invention has the following beneficial effects:

[0033] 1. The present invention drives the calcination drum through a transmission mechanism. Meanwhile, a sludge scraping member is arranged on the outer surface of the transmission rod, and the outer surface of the sludge scraping member is attached to the inner wall of the calcination drum. The sludge scraping member is driven by a transmission motor to rotate in the opposite direction to the calcination drum, so that the oil sludge attached to the inner wall of the calcination drum is scraped off by the sludge scraping member. The sludge scraping member is in the shape of a sheet block, achieving the effects of preventing oil sludge adhesion, improving heating uniformity, and enhancing the heat resistance of the sludge scraping member.

[0034] 2. The present invention sets up a channel for oil sludge consisting of a first heat preservation pipe, a second heat preservation pipe, and a third heat preservation pipe. Among them, the first heat preservation pipe is fixedly connected to the transmission motor, the second heat preservation pipe is fixed to the support surface, and the third heat preservation pipe is fixed to the third heat preservation pipe. While the positions of the first heat preservation pipe, the second heat preservation pipe, and the third heat preservation pipe can be limited, they can be disassembled from each other conveniently, achieving the effect of facilitating the cleaning and maintenance of the support heat preservation mechanism, the rotating mechanism, and the oil sludge conveying mechanism.

[0035] 3. The present invention respectively arranges a first auger blade and a second auger blade at both ends of the transmission rod, and the outer edges of the first auger blade and the second auger blade are respectively lapped with the inner wall of the third heat preservation pipe and the inner wall of the first heat preservation pipe. When the first auger blade and the second auger blade rotate, in addition to conveying the oil sludge, they can also seal the inside of the calcination drum, reduce the heat loss in the calcination drum, and improve the heating efficiency of the oil sludge.

[0036] 4. The present invention sets breaking teeth flush with the outer surface of the second auger blade between the blades of the second auger blade, and the breaking teeth are located directly below the feed pipe. When the oil sludge is conveyed into the first heat preservation pipe through the feed pipe, the rotating breaking teeth can break up the oil sludge, thus avoiding the blockage of the feed pipe by the oil sludge.

[0037] 5. The present invention sets a heat insulation member at the end of the transmission motor, and isolates the first heat preservation pipe and the transmission motor through the heat insulation member, thereby preventing the heat of heating the oil sludge inside the first heat preservation pipe from being transmitted to the transmission motor, achieving the effect of protecting the transmission motor. At the same time, the first heat preservation pipe and the heat insulation member can be connected into one body through the cooperation of the heat insulation member and bolts, improving the support for the first heat preservation pipe.

[0038] 6. The present invention sets a limit step on the inner wall of one end of the first heat preservation pipe and the third heat preservation pipe facing the second heat preservation pipe to cooperate with the assembly joint to limit the calcination drum. And an eddy current heating ring is installed in the eddy current installation groove arranged inside the second heat preservation pipe, so that the inner wall of the calcination drum can be flush with the inner walls of the first heat preservation pipe and the third heat preservation pipe, achieving the effect of improving the rotation stability of the calcination drum while also improving the transmission stability of the oil sludge.

[0039] 7. The present invention sets the inner wall of the vortex ring mounting groove to a mirror surface, and at the same time creates a gap between the inner wall of the vortex heating ring and the outer surface of the calcination drum, wherein the mirror surface of the vortex ring mounting groove can improve the heat collection property, and the gap between the vortex heating ring and the calcination drum can evenly distribute the heat of the vortex heating ring in all directions, thereby improving the uniformity of heating the calcination drum.

[0040] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Shown is a schematic structural diagram of the present invention.

[0042] Figure 2 Shown is an exploded view of the present invention.

[0043] Figure 3 Shown is a cross-sectional view of the structure of the present invention.

[0044] Figure 4 A cross-sectional view showing the installation of the eddy current heating mechanism of the present invention.

[0045] Figure 5 Shown as the present invention Figure 3 A schematic diagram of the enlarged structure at point A in the middle.

[0046] Figure 6 Shown is a schematic structural diagram of the rotating mechanism of the present invention.

[0047] Figure 7 Shown is a schematic structural diagram of the oil sludge conveying mechanism of the present invention.

[0048] Figure 8 Shown is a cross-sectional view of the structure of the thermal insulation member of the present invention.

[0049] Fig. 9 Shown is a schematic diagram of the installation position of the circulation pipe interface of the present invention.

[0050] Component number description:

[0051] 1. Supporting and heat preservation mechanism; 101. First heat preservation pipe; 102. Second heat preservation pipe; 103. Third heat preservation pipe; 104. Feed pipe; 105. Position limiting platform; 106. Vortex ring mounting groove; 107. Support frame; 108. Suspension frame;

[0052] 2. Rotating mechanism; 201. Calcination drum; 202. Driven ring; 203. Assembly joint;

[0053] 3. Transmission mechanism; 301. Fixed base; 302. Rotary drive motor; 303. Transmission wheel;

[0054] 4. Eddy current heating mechanism; 401. Eddy current heating ring; 402. distributor;

[0055] 5. Oily sludge conveying mechanism; 501. Transmission motor; 502. Transmission rod; 503. First auger blade; 504. Second auger blade; 5041. Mud-breaking teeth; 505. Mud-scraping member; 5051. Support rod; 5052. Mud-scraping plate; 5053. Through slot; 506. Motor seat; 507. Heat-insulating member; 5071. Heat-insulating sealing cylinder; 5072. Rotating shaft support tube; 5073. Cooling chamber; 5074. Circulation pipe interface; 5075. Flange;

[0056] 6. Recovery mechanism; 7. Exhaust pipe. DETAILED DESCRIPTION

[0057] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0058] See also Figures 1 to 9 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0059] like Figure 1-Figure 3 As shown, the present invention provides an electromagnetic heating rotary kiln reverse double-drive oily sludge thermal desorption device, comprising a supporting and heat-insulating mechanism 1, a rotating mechanism 2, a transmission mechanism 3, an eddy current heating mechanism 4 and an oily sludge conveying mechanism 5.

[0060] Specifically, the support and insulation mechanism 1 includes a first insulation pipe 101, a second insulation pipe 102 and a third insulation pipe 103 which are coaxially arranged from right to left to form a transmission channel for oil sludge. At the same time, the first insulation pipe 101, the second insulation pipe 102 and the third insulation pipe 103 are also used to reduce heat dissipation and improve the heating efficiency. A feed pipe 104 is provided on the first insulation pipe 101 for transmitting oil sludge to the inside of the first insulation pipe 101. A recovery mechanism 6 is provided at one end of the third insulation pipe 103. After high-temperature treatment, the oil sludge is transferred to the recovery mechanism 6 through the third insulation pipe 103 for collection. The container of the recovery mechanism 6 is stored and has a closable discharge port for unloading. An exhaust pipe 7 is provided on the recovery mechanism 6, and the gas generated during the heating of the oil sludge is discharged to the outside through the exhaust pipe 7. In order to improve the transportation performance of the oil sludge, the support and insulation mechanism 1 is tilted. The end of the support and insulation mechanism 1 connected to the recovery mechanism 6 is at a low position.

[0061] The rotating mechanism 2 includes a calcining drum 201, which is coaxially arranged inside the first insulation tube 101, and the calcining drum 201 is of the same length as the first insulation tube 101. The transmission mechanism 3 heats the stainless steel calcining drum 201 by electromagnetic induction, so that the oil sludge inside the calcining drum 201 is treated with high temperature. The calcining drum 201 can rotate inside the first insulation tube 101, so that the oil sludge rolls inside the calcining drum 201, thereby improving the uniformity of heating the oil sludge. Both ends of the calcining drum 201 are provided with driven rings 202 extending to the two ends of the first insulation tube 101, which respectively collide with the ends of the first insulation tube 101 and the third insulation tube 103, so that the position of the calcining drum 201 is limited by the driven ring 202 to prevent the calcining drum 201 from deviating when rotating. The diameter of the driven ring 202 is larger than that of the first insulation tube 101 , so that the outer surface of the driven ring 202 protrudes from the outer surface of the second insulation tube 102 , making it easier for the transmission mechanism 3 to drive the calcining drum 201 .

[0062] The transmission mechanism 3 is arranged outside the supporting and heat-insulating mechanism 1 and contacts the driven ring 202. The transmission mechanism 3 drives the calcining drum 201 to rotate by friction to realize the function of the rotary kiln. The transmission mechanism 3 arranged outside the supporting and heat-insulating mechanism 1 can avoid the influence of high temperature, improve the service life and safety of use.

[0063] The eddy current heating mechanism 4 includes an eddy current heating ring 401 installed on the inner wall of the second insulation tube 102 and a distributor 402 installed on the outer surface of the second insulation tube 102. The eddy current heating ring 401 and the distributor 402 are electrically connected. When the distributor 402 is connected to an external power source, the current will pass through the eddy current heating ring 401 to form an electromagnetic field. The electromagnetic field interacts with the stainless steel calcining drum 201 to produce an eddy current heating effect, heat the calcining drum 201, and generate high temperature inside the calcining drum 201. The distributor 402 has a device that can control the current inside, which is used to change the heating temperature of the eddy current heating ring 401 and improve the scope of application.

[0064] The oily sludge conveying mechanism 5 includes a transmission motor 501 installed on one side of the first insulation tube 101. The output shaft of the transmission motor 501 is provided with a transmission rod 502 coaxial with the first insulation tube 101. The transmission motor 501 works to drive the transmission rod 502 to rotate on the axis of the first insulation tube 101. The outer surface of the transmission rod 502 is provided with a scraper 505, and the outer surface of the scraper 505 is in conflict with the inner wall of the calcining drum 201. The scraper 505 is driven by the transmission rod 502 to rub against the inside of the calcining drum 201, thereby scraping off the oily sludge attached to the inside of the calcining drum 201. The transmission motor 501 is a variable frequency motor, and the driving direction of the transmission motor 501 can be converted as needed. Generally, the transmission motor 501 drives the scraper 505 in the opposite direction of the rotation direction of the calcining drum 201, and the cleaning force of the scraper 505 on the inner wall of the calcining drum 201 is increased at the same speed.

[0065] like Figure 3 and Figure 7 As shown, in some embodiments, the scraper 505 of the present invention includes two support rods 5051, and the two support rods 5051 are respectively arranged at the two ends of the middle part of the transmission rod 502. Thereby, a gap is left between the two support rods 5051, reducing the resistance of the support rods 5051 to the oil sludge during the rotation of the support rods 5051, and improving the work efficiency of the transmission motor 501. At the same time, it can also effectively prevent the oil sludge in the calcining drum 201 from being heated unevenly due to the rotation of the support rods 5051. The ends of the two support rods 5051 jointly support a scraper plate 5052. The sheet-shaped scraper plate 5052 has better resistance to heat damage than the brush, which greatly improves the service life. When the oil sludge is firmly attached, the brush will be blocked and deformed and difficult to clean. However, the hard scraper plate 5052 will not be unable to be cleaned due to the firm attachment of the oil sludge. The edge of the scraper plate 5052 is set as a beveled blade, and the outer surface of the scraper plate 5052 is in contact with the inner wall of the calcining drum 201 to improve the efficiency of cleaning the oil sludge attached to the inner wall of the calcining drum 201.

[0066] like Figure 7As shown, in some embodiments, a through slot 5053 is provided at the center of the scraper 5052 of the present invention, and the two sides of the through slot 5053 are respectively fitted with the ends of the support rod 5051. When the scraper 5052 rotates up from the bottom of the calcining drum 201, the relatively broken oil sludge will fall through the through slot 5053, while the larger oil sludge will be stuck in the through slot 5053. After the through slot 5053 rotates to the highest point, the stuck oil sludge will fall under the action of gravity, and then collide with the rest of the oil sludge and break.

[0067] like Figure 3 , Figure 4 and Figure 7 As shown, in some embodiments, the first auger blade 503 and the second auger blade 504 are respectively provided at both ends of the transmission rod 502 of the present invention. The second auger blade 504 is located inside the first insulation tube 101, and the outer surface of the second auger blade 504 is in contact with the inner wall of the first insulation tube 101, so that after the oil sludge enters the first insulation tube 101 through the feed pipe 104, it is transferred to the calcining drum 201 by the rotating second auger blade 504 for heating. The first auger blade 503 is located inside the third insulation tube 103, and the outer surface of the first auger blade 503 is in contact with the inner wall of the third insulation tube 103. The heat-treated oil sludge moves to the third insulation tube 103 under the action of gravity and is blocked by the first auger blade 503. It is quantitatively output to the recovery mechanism 6 for storage through the rotation of the first auger blade 503, thereby improving the heating effect of the oil sludge. At the same time, the first auger blade 503 and the second auger blade 504 cooperate with each other, so that the calcining drum 201 is in a relatively sealed space, which is conducive to the temperature maintenance and temperature concentration, and further improves the effect of heat treatment of oil sludge. In addition, because the number of scraper pieces 505 is small, when the transmission rod 502 rotates, the transmission rod 502 will shake due to centrifugal force. Therefore, the first auger blade 503 and the second auger blade 504 can cooperate to support the longer transmission rod 502, improve the stability of the rotation of the transmission rod 502, and avoid shaking during the rotation of the transmission rod 502. At the same time, a suspension bracket 108 is provided on the top of the inner wall of the third insulation pipe 103, and the end of the transmission rod 502 penetrates into the suspension bracket 108 and is supported, so as to further improve the stability of the rotation of the transmission rod 502, and avoid the scraper piece 505 from colliding with the inner wall of the calcining drum 201 due to shaking, resulting in a shortened service life of the scraper piece 505 and the calcining drum 201.

[0068] like Figure 4 and Figure 7As shown, in some embodiments, a plurality of mud-breaking teeth 5041 whose outer surfaces are flush with the second auger blade 504 are equidistantly arranged between the gaps between the blades of the second auger blade 504 of the present invention, and the mud-breaking teeth 5041 are located directly below the feed pipe 104. When the oily sludge enters the first insulation pipe 101 through the feed pipe 104, the wet and oily soil is easy to stick together. At this time, the rotating mud-breaking teeth 5041 will gradually break up the sticking oily sludge, so that the oily sludge can be smoothly transferred to the inside of the calcining drum 201 through the second auger blade 504.

[0069] It should be noted that both ends of the mud-breaking teeth 5041 are configured as sharp triangular heads, so that the rotating mud-breaking teeth 5041 can be more easily inserted into the interior of the agglomerated oil sludge, and shear force is generated under the action of torsion to break the agglomerated oil sludge.

[0070] like Figure 3 , Figure 4 and Figure 6 As shown, in some embodiments, both ends of the driven ring 202 of the present invention are provided with assembly joints 203. The inner walls of the first insulation tube 101 and the third insulation tube 103 facing the second insulation tube 102 are both provided with a limiting step 105. The assembly joints 203 at both ends are inserted into the limiting step 105 to limit the calcining drum 201, so as to further improve the stability of the calcining drum 201. At the same time, the transition between the inner walls at both ends of the calcining drum 201 and the inner walls of the first insulation tube 101 and the third insulation tube 103 is smoother, thereby improving the smoothness of the transmission of the oil sludge.

[0071] like Figure 5 As shown, in some embodiments, the inner wall of the second insulation tube 102 of the present invention is provided with a vortex ring installation groove 106, and the vortex heating ring 401 surrounds the inside of the vortex ring installation groove 106, so that the inner wall of the calcination drum 201 can be flush with the inner walls of the first insulation tube 101 and the third insulation tube 103. The inner wall of the vortex ring installation groove 106 is set as a mirror surface, which reflects the heat source through the mirror surface, and concentrates the heat radiation on the calcination drum 201 through the arc surface of the inner wall of the vortex ring installation groove 106, thereby improving the heating performance of the calcination drum 201 by the vortex heating ring 401. There is a gap between the inner wall of the vortex heating ring 401 and the outer surface of the calcination drum 201, so that the heat generated by the heating of the vortex heating ring 401 can flow between the vortex ring installation groove 106 and the calcination drum 201, so that the calcination drum 201 is heated more evenly.

[0072] like Figure 2 , Figure 3 and Figure 7As shown, in some embodiments, a heat insulating member 507 is provided on the side of the transmission motor 501 of the present invention facing the first insulation tube 101, and the heat insulating member 507 extends to the inside of the second insulation tube 102, so as to improve the sealing performance of the mouth of the first insulation tube 101 through the heat insulating member 507. At the same time, the heat insulating member 507 is used to isolate the heat in the first insulation tube 101 from being transmitted to the transmission motor 501, so as to prevent the high temperature in the first insulation tube 101 from being directly transmitted to the transmission motor 501, thereby reducing the service life of the transmission motor 501.

[0073] like Figure 8 and Fig. 9 As shown, in some embodiments, the heat insulating member 507 of the present invention includes a heat insulating sealing tube 5071, and the heat insulating sealing tube 5071 is suitable for preparing heat insulating materials. The heat insulating sealing tube 5071 is fixed to the end of the transmission motor 501, and the transmission motor 501 is connected to the first insulation tube 101 through the heat insulating sealing tube 5071. The axis of the heat insulating sealing tube 5071 is provided with a rotating shaft support tube 5072, and the transmission rod 502 passes through the axis of the rotating shaft support tube 5072.

[0074] A cooling chamber 5073 is provided between the heat-insulating sealing cylinder 5071 and the rotating shaft supporting tube 5072, and a circulating liquid is provided inside the cooling chamber 5073. When the heat is transferred to the transmission motor 501 through the heat-insulating sealing cylinder 5071, the heat is first cooled by the circulating liquid, and then transferred to the transmission motor 501 to protect the transmission motor 501. A circulation pipe interface 5074 is provided on the outer surface of the heat-insulating sealing cylinder 5071, and the circulation pipe interface 5074 is connected to the inside of the cooling chamber 5073. When in use, the circulation pipe interface 5074 is connected to an external pump body, and the pump body realizes liquid circulation by pressurizing the liquid inside the cooling chamber 5073, forming a liquid cooling system to achieve efficient heat dissipation.

[0075] The outer surface of the heat-insulating sealing cylinder 5071 is also provided with a flange 5075, which is fixedly connected to the end of the first insulation pipe 101 by bolts. When the equipment is maintained and serviced, the transmission motor 501 and the first insulation pipe 101 can be easily separated by removing the bolts, so that the maintenance personnel can maintain the oil sludge conveying mechanism 5 and maintain and clean the interior of the supporting insulation mechanism 1.

[0076] like Figure 1 and Figure 2As shown, in some embodiments, the number of the transmission mechanisms 3 of the present invention is multiple and used in pairs. The two transmission mechanisms 3 in each pair of transmission mechanisms 3 respectively contact the driven ring 202 from both sides of the driven ring 202 to drive the calcining drum 201 to rotate. The transmission mechanism 3 includes a fixed base 301 used as a supporting bottom. A rotary drive motor 302 is arranged on the top of the fixed base 301, and a transmission wheel 303 is arranged on the output shaft of the rotary drive motor 302. The outer surface of the transmission wheel 303 contacts the outer surface of the driven ring 202, and the calcining drum 201 is driven by friction, so as to realize the turning of the oil sludge inside the calcining drum 201 and improve the uniformity of heating the oil sludge.

[0077] In order to improve the stability of the device, a support frame 107 is provided at the bottom of the outer surface of the second insulation tube 102, and a motor seat 506 is provided at the bottom of the outer surface of the transmission motor 501. The bottoms of the fixed base 301, the support frame 107 and the motor seat 506 are flush and fixed to the support surface by bolts, so that the first insulation tube 101, the second insulation tube 102 and the transmission motor 501 will not move, so as to ensure the sealing of the connection between the first insulation tube 101, the second insulation tube 102 and the third insulation tube 103. It should be noted that although the bottom of the fixed base 301 is flush with the bottom of the support frame 107 and the motor seat 506, the top height of the transmission wheel 303 close to the third insulation tube 103 is shorter than the top height of the transmission wheel 303 close to the first insulation tube 101, so that the support insulation mechanism 1 is in an inclined state.

[0078] The specific use process of the present invention is as follows:

[0079] The oily sludge enters the interior of the first insulation tube 101 through the feed pipe 104, and is driven by the rotating second auger blade 504 to the interior of the calcining drum 201 for heating and heat treatment. While the oily sludge is being heat treated, the rotating transmission rod 502 drives the scraper 505 to scrape the inner wall of the calcining drum 201, thereby cleaning the oily sludge attached to the inner wall of the calcining drum 201. The heat-treated oily sludge moves to the third insulation tube 103 by gravity, and is transmitted to the recovery mechanism 6 for collection by the first auger blade 503, and the gas generated during the treatment process is collected or discharged through the exhaust pipe 7.

[0080] In summary, the electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment of the present invention is driven by the transmission mechanism 3 by setting the calcining drum 201, and at the same time, a scraper 505 is set on the outer surface of the transmission rod 502, and the outer surface of the scraper 505 is made to fit the inner wall of the calcining drum 201, and the scraper 505 and the calcining drum 201 are driven by the transmission motor 501 to rotate in the opposite direction, so that the oil sludge attached to the inner wall of the calcining drum 201 is scraped off by the scraper 505, and the scraper 505 is in the shape of a sheet, so as to achieve the effect of preventing oil sludge from adhering to, improving heating uniformity and improving the resistance of the scraper 505 to heat damage.

[0081] The present invention forms a channel for oil sludge by setting a first insulation tube 101, a second insulation tube 102 and a third insulation tube 103, wherein the first insulation tube 101 is fixedly connected to the transmission motor 501, the second insulation tube 102 is fixed to the support surface, and the third insulation tube 103 is fixed to the third insulation tube 103, so that the positions of the first insulation tube 101, the second insulation tube 102 and the third insulation tube 103 can be limited and they can be easily disassembled from each other, thereby achieving the effect of facilitating the cleaning and maintenance of the supporting insulation mechanism 1, the rotating mechanism 2 and the oil sludge conveying mechanism 5.

[0082] The present invention arranges the first auger blade 503 and the second auger blade 504 at both ends of the transmission rod 502, and makes the outer edges of the first auger blade 503 and the second auger blade 504 overlap the inner wall of the third insulation tube 103 and the inner wall of the first insulation tube 101 respectively. When the first auger blade 503 and the second auger blade 504 rotate, in addition to transporting the oil sludge, they can also seal the interior of the calcining drum 201, reduce the heat loss in the calcining drum 201, and improve the heating efficiency of the oil sludge.

[0083] The present invention arranges mud-breaking teeth 5041 flush with the outer surface of the second auger blade 504 between the blades of the second auger blade 504, and the mud-breaking teeth 5041 are located directly below the feed pipe 104. When the oily sludge is transported to the inside of the first insulation pipe 101 through the feed pipe 104, the rotating mud-breaking teeth 5041 can break up the oily sludge, thereby preventing the oily sludge from clogging the feed pipe 104.

[0084] The present invention arranges a heat insulating member 507 at the end of the transmission motor 501, and isolates the first insulation tube 101 and the transmission motor 501 through the heat insulating member 507, thereby preventing the heat of the heated oil sludge inside the first insulation tube 101 from being transmitted to the transmission motor 501, thereby protecting the transmission motor 501. At the same time, the first insulation tube 101 and the heat insulating member 507 can be connected as a whole through the cooperation of the heat insulating member 507 and bolts, thereby improving the support for the first insulation tube 101.

[0085] The present invention sets a limiting step 105 on the inner wall of one end of the first insulation tube 101 and the third insulation tube 103 facing the second insulation tube 102 to cooperate with the assembly joint 203 to limit the calcining drum 201, and sets a vortex ring mounting groove 106 inside the second insulation tube 102 to install the vortex heating ring 401, so that the inner wall of the calcining drum 201 can be flush with the inner walls of the first insulation tube 101 and the third insulation tube 103, thereby improving the rotation stability of the calcining drum 201 and the stability of oil sludge transmission.

[0086] The present invention sets the inner wall of the vortex ring mounting groove 106 to a mirror surface, and at the same time creates a gap between the inner wall of the vortex heating ring 401 and the outer surface of the calcining drum 201, wherein the mirror-surface vortex ring mounting groove 106 can improve the heat collection property, and the gap between the vortex heating ring 401 and the calcining drum 201 can evenly distribute the heat of the vortex heating ring 401 in all directions, thereby improving the uniformity of heating the calcining drum 201.

[0087] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0088] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An electromagnetic heating rotary kiln reverse double-drive oily sludge thermal desorption equipment, characterized in that: include: A supporting heat-insulating mechanism (1), the supporting heat-insulating mechanism (1) comprising a first heat-insulating pipe (101), a second heat-insulating pipe (102) and a third heat-insulating pipe (103) which are coaxially arranged in sequence from right to left, wherein the first heat-insulating pipe (101) is provided with a feed pipe (104) for transmitting oil sludge into the interior of the first heat-insulating pipe (101); A rotating mechanism (2), the rotating mechanism (2) comprising a calcining drum (201), the calcining drum (201) being coaxially arranged inside a first insulation tube (101), the calcining drum (201) being of equal length to the first insulation tube (101), and being rotatable inside the first insulation tube (101), both ends of the calcining drum (201) being provided with driven rings (202) extending to both ends of the first insulation tube (101) and respectively abutting against ends of the first insulation tube (101) and a third insulation tube (103), the driven ring (202) having a diameter greater than that of the first insulation tube (101); A transmission mechanism (3), the transmission mechanism (3) being arranged outside the supporting and heat-insulating mechanism (1) and in contact with the driven ring (202), the transmission mechanism (3) being used for driving the calcining drum (201) to rotate; An eddy current heating mechanism (4), the eddy current heating mechanism (4) comprising an eddy current heating ring (401) installed on the inner wall of the second insulation tube (102) and a distributor (402) installed on the outer surface of the second insulation tube (102), the eddy current heating ring (401) and the distributor (402) being electrically connected, and the calcining drum (201) is eddy-current heated by the eddy current heating ring (401); An oily sludge conveying mechanism (5), the oily sludge conveying mechanism (5) comprising a transmission motor (501) mounted on one side of the first insulation tube (101), the output shaft of the transmission motor (501) being provided with a transmission rod (502) coaxial with the first insulation tube (101), the outer surface of the transmission rod (502) being provided with a scraper (505), the outer surface of the scraper (505) being in contact with the inner wall of the calcining drum (201); A recovery mechanism (6) is provided at one end of the third heat-insulating pipe (103), and an exhaust pipe (7) is provided on the recovery mechanism (6).

2. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 1 is characterized by: The scraper (505) comprises two support rods (5051), the two support rods (5051) are respectively arranged at two ends of the middle part of the transmission rod (502), the ends of the two support rods (5051) jointly support a scraper plate (5052), the edge of the scraper plate (5052) is arranged as a beveled blade, and the outer surface of the scraper plate (5052) is in contact with the inner wall of the calcining drum (201).

3. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 2 is characterized by: A through slot (5053) is provided at the center of the scraper plate (5052), and two sides of the through slot (5053) are respectively fitted to the ends of the support rod (5051).

4. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 2 is characterized by: The two ends of the transmission rod (502) are respectively provided with a first auger blade (503) and a second auger blade (504); the first auger blade (503) is located inside the third insulation tube (103); the outer surface of the first auger blade (503) is in contact with the inner wall of the third insulation tube (103); the second auger blade (504) is located inside the first insulation tube (101); the outer surface of the second auger blade (504) is in contact with the inner wall of the first insulation tube (101); A suspension bracket (108) is provided on the top of the inner wall of the third thermal insulation pipe (103), and the end of the transmission rod (502) passes through the suspension bracket (108) to be supported.

5. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 4 is characterized by: A plurality of mud-breaking teeth (5041) whose outer surfaces are flush with the second auger blades (504) are equidistantly arranged between the gaps between the blades of the second auger blades (504), and the mud-breaking teeth (5041) are located directly below the feed pipe (104); Both ends of the mud breaking tooth (5041) are configured to be sharp triangular heads.

6. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 1 is characterized by: Both ends of the driven ring (202) are provided with assembly joints (203); and the inner walls of the ends of the first insulation tube (101) and the third insulation tube (103) facing the second insulation tube (102) are both provided with limiting steps (105); The assembly joints (203) at both ends are inserted into the limiting ladder (105) to limit the calcining drum (201).

7. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 1 is characterized by: The inner wall of the second thermal insulation pipe (102) is provided with a vortex ring installation groove (106), the inner wall of the vortex ring installation groove (106) is arranged to be a mirror surface, and the vortex heating ring (401) surrounds the inside of the vortex ring installation groove (106); A gap is left between the inner wall of the eddy current heating ring (401) and the outer surface of the calcining drum (201); The inner wall of the calcining drum (201) is flush with the inner walls of the first insulation tube (101) and the third insulation tube (103).

8. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to any one of claims 1 to 7, characterized in that: A heat insulating member (507) is provided on a side of the transmission motor (501) facing the first insulation tube (101), and the heat insulating member (507) extends into the interior of the second insulation tube (102) to isolate heat in the first insulation tube (101) from being transferred to the transmission motor (501).

9. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 8 is characterized by: The heat insulating member (507) comprises a heat insulating sealing cylinder (5071), the heat insulating sealing cylinder (5071) is fixed to the end of the transmission motor (501), a rotating shaft support tube (5072) is arranged at the axis of the heat insulating sealing cylinder (5071), and the transmission rod (502) passes through the axis of the rotating shaft support tube (5072); A cooling chamber (5073) is provided between the heat-insulating sealing cylinder (5071) and the rotating shaft supporting tube (5072), and a circulation pipe interface (5074) is provided on the outer surface of the heat-insulating sealing cylinder (5071), and the circulation pipe interface (5074) is connected to the interior of the cooling chamber (5073); The outer surface of the heat-insulating sealing cylinder (5071) is also provided with a flange (5075), and the flange (5075) is fixedly connected to the end of the first thermal insulation pipe (101).

10. The electromagnetic heating rotary kiln reverse dual-drive oily sludge thermal desorption equipment according to claim 1 is characterized by: The transmission mechanism (3) comprises a fixed base (301), a rotary drive motor (302) is arranged on the top of the fixed base (301), a transmission wheel (303) is arranged on the output shaft of the rotary drive motor (302), and the outer surface of the transmission wheel (303) is in conflict with the outer surface of the driven ring (202); A support frame (107) is provided at the bottom of the outer surface of the second thermal insulation pipe (102), a motor seat (506) is provided at the bottom of the outer surface of the transmission motor (501), and the bottoms of the fixed base (301), the support frame (107) and the motor seat (506) are flush.

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