A rotary kiln jet heating device

Abstract

The present invention discloses a rotary kiln jet-type heating device, which belongs to the field of heat energy utilization technology, including a rotary kiln, a plurality of heating covers are arranged on the outside of the rotary kiln, a plurality of air inlets are arranged below the heating covers, a plurality of air outlets with openings facing upwards are arranged on the heating covers, and an isolation component for preventing heat from overflowing is arranged at the ends of every two heating covers; a partition component is fixedly arranged on the inner wall of the heating cover, and the partition component divides the inside of the heating cover into an isolation area and a heating area, and the heating area is connected to the air inlet; a first guide is arranged below the rotary kiln, and a plurality of guide holes are arranged on the first guide, and hot air directly hits the outer wall of the rotary kiln after passing through the guide holes. The present invention is used to solve the technical problems that the material in the rotary kiln is heated slowly, the energy consumption is high, and the heat of the flue gas in the rotary kiln cannot be fully transferred to the rotary kiln.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal energy utilization, and in particular relates to a rotary kiln jet heating device. Background Art

[0002] The importance of rotary kiln as a kind of equipment for heating and preparing chemical reagents is self-evident. The heating schemes of rotary kiln include gas heating, electric heating, etc. During the operation of rotary kiln, the reagents are turned over and evenly absorb heat through continuous rotation, and gradually move to the side of the discharge to ensure continuous heating work, and its working efficiency can be fully improved.

[0003] Regardless of whether it is a gas-heated or electric-heated rotary kiln, energy conversion is a very important one among the main controlled technical indicators. For example, in a gas-heated rotary kiln, heat mainly exists in the flue gas after gas combustion. The flue gas is introduced into the heating hood outside the rotary kiln through a pipe, which can heat the material in the rotary kiln. However, in actual use, due to the large diameter of the rotary kiln, most of the heat is wasted; after years of analysis and research on the rotary kiln by our team, we believe that the following technical problems lead to heat waste: 1. The materials are concentrated at the bottom of the rotary kiln, but the entire furnace body of the rotary kiln is heated, and many places are ineffectively heated, resulting in the material failing to reach the required temperature. At the same time, due to the slow rotation speed of the rotary kiln but the fast flow speed of the flue gas, it takes a long time for the material to reach the required temperature, so more gas combustion is required for heating; 2. After the flue gas enters the gap between the rotary kiln and the heating hood, it will flow toward the smoke outlet. After a long period of heating, the flue gas forms a laminar flow toward the smoke outlet, and a thin laminar layer will also be formed on the outer wall of the rotary kiln. This laminar layer will also exist for a long time, which is equivalent to becoming an insulating layer between the smoke layer and the rotary kiln, so that the heat on the smoke cannot be effectively transferred to the rotary kiln, which will waste more heat. Therefore, based on the above problems, we propose a heating device for a rotary kiln that can solve the above problems, achieve full utilization of heat, reduce the use of gas, and reduce the cost of use. Summary of the invention

[0004] In view of the above problems, the present invention provides a rotary kiln jet heating device for solving the technical problems that the material in the rotary kiln is heated slowly, the energy consumption is high, and the heat of the flue gas in the rotary kiln cannot be fully transferred to the rotary kiln.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A rotary kiln jet-type heating device comprises a rotary kiln, a plurality of heating covers are arranged on the outer side of the rotary kiln, a plurality of air inlets are arranged below the heating covers, a plurality of air outlets opening upward are arranged on the heating covers, and an isolation component for preventing heat from overflowing is arranged at the ends of every two heating covers;

[0007] A partition component is fixedly arranged on the inner wall of the heating cover, and the partition component divides the heating cover into an isolation area and a heating area, and the heating area is connected to the air inlet;

[0008] A first flow guide is arranged below the rotary kiln. The first flow guide is provided with a plurality of flow guide holes. Hot air passes through the flow guide holes and directly hits the outer wall of the rotary kiln.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: by adopting the method of setting a partition component, the area in the heating hood that receives hot air is concentrated below the rotary kiln, so that the rotary kiln can be directly heated when the hot air is introduced, and the partitioning effect of the partition component can avoid the ineffective heating of the area on the rotary kiln that does not need to be heated by the hot air; in addition, through the first guide member, the hot air can be directly blown on the outer wall of the rotary kiln after passing through the guide hole, thereby effectively breaking the laminar insulation layer on the outer surface of the rotary kiln, disrupting it into turbulent flow, thereby improving the efficiency of heat transfer and reducing costs.

[0010] As a further improvement of the above solution, the first flow guide is arranged in the entire heating area along the rotation axis of the rotary kiln, and divides the heating area into two parts, inner and outer parts;

[0011] The first flow guide is in the shape of an arc plate.

[0012] The technical effect of the above improvement is: by arranging the first guide member in the entire heating area, the hot air can be directly directed toward the rotary kiln when it is blown onto the rotary kiln, thereby effectively transferring heat to the material in the rotary kiln, so that the material can be quickly heated to a higher temperature.

[0013] As a further improvement of the above solution, the first air guide is arranged at the air inlet and fixedly arranged with the heating cover, and an air inlet cover is also arranged outside the heating cover and the first air guide to completely surround them;

[0014] The partition component extends outwards and contacts the inner wall of the air inlet cover, and divides the interior of the air inlet cover into two parts, an upper part and a lower part. The air inlet is communicated with the lower part of the air inlet cover.

[0015] As a further improvement of the above scheme, a plurality of second flow guides fixed on the inner wall of the heating cover are arranged in the heating area, a first activity area is formed between the two second flow guides to facilitate the hot air to move along the circumference of the rotary kiln, and a plurality of heat-conducting members protruding outward are arranged on the outer wall of the rotary kiln, and the heat-conducting members are located in the first activity area;

[0016] The edge of the second flow guide is close to the rotary kiln and does not contact the rotary kiln. A curved flow guide surface is arranged on the windward surface of the second flow guide, and the tangent line of the air outlet point on the flow guide surface faces the rotary kiln.

[0017] The technical effect of the above improvement is: by setting the first guide member at the position of the air inlet, the hot air entering the heating area will first contact the outer surface of the rotary kiln for effective heat transfer, and when the hot air continues to flow toward the air outlet side, it will contact the surface of the second guide member. Under the guidance of the second guide member, it will be blown onto the surface of the rotary kiln again, thereby slowing down the flow speed of the hot air, destroying the laminar insulation layer on the outer surface of the rotary kiln, and transferring the heat to the rotary kiln or the first active area to improve the heat transfer effect.

[0018] As a further improvement of the above scheme, the heat conducting member is provided with multiple sections on the outer side of the rotary kiln, and the heat conducting member is arranged obliquely in the interval between the two second flow guiding members, and does not contact the second flow guiding members, and the heat conducting members are distributed in multiple groups, and the inclination directions of different groups are different, and the second active area between each two heat conducting members is convenient for the hot air to change the position in different first active areas;

[0019] The partition assembly includes a fixed plate fixed on the heating cover, and the upper and lower surfaces of the fixed plate are respectively provided with a first partition plate and a second partition plate for reciprocating sliding. The first partition plate and the second partition plate are respectively provided with guide seats for facilitating the passage of heat-conducting parts with different inclined directions. Springs are provided between the first partition plate, the second partition plate and the fixed plate to pull them to return to their original position.

[0020] The technical effect of the above improvement is: by setting the heat-conducting member into a multi-stage inclined shape, the flow direction of the hot air in each first active area can be changed, so that during the rotation of the rotary kiln, the hot air can be prompted to continuously flow to different first active areas and second active areas, so that the hot air can continuously pass through the second guide member and the heat-conducting member, and the hot air can continuously hit the outer wall of the rotary kiln, thereby continuously destroying the laminar insulation layer on the outside of the rotary kiln, so as to further improve the heat transfer effect.

[0021] As a further improvement of the above solution, a movable plate is slidably provided on the first guide member, and a plurality of through holes corresponding to the guide holes are provided on the movable plate, and the area of ​​the through holes is larger than the area of ​​the guide holes;

[0022] When the movable plate moves on the first flow guide member, the through hole gradually overlaps with the flow guide hole.

[0023] The technical effect of the above improvement is: by setting up the movable plate, it can be controlled to move to different positions. When the through hole and the guide hole overlap each other, the hot air can slowly pass through the guide hole and hit the surface of the rotary furnace for heat transfer, thereby realizing the control of the air intake volume.

[0024] As a further improvement of the above solution, the isolation assembly includes a first heat insulating member sealed and fixedly arranged on the rotary kiln, a support plate is fixedly arranged at the end of the heating cover, a second heat insulating member is fixedly arranged on the outer side of the support plate, and a plurality of first sealing members for sealing are arranged between the second heat insulating member and the first heat insulating member;

[0025] The first sealing member is detachably provided with a connecting seat movable along the diameter direction of the rotary kiln, and the connecting seat is sleeved with a second sealing member for sealing the first heat insulating member and the second heat insulating member.

[0026] As a further improvement of the above solution, a blocking plate is fixedly arranged on the support plate, a support block is arranged between the blocking plate and the support plate, the blocking plate extends toward a side close to the rotary kiln and is in sealing contact with the first heat insulating member, and a top pressure plate which is sealed with the blocking plate is also fixed on the first heat insulating member;

[0027] A sliding seat which is slidably arranged with the supporting block is detachably arranged on the connecting seat, and a pulling member which pulls the sliding seat to move outward is arranged between the end of the sliding seat and the supporting plate.

[0028] The technical effect of the above-mentioned improvement is: the first thermal insulation member and the second thermal insulation member can effectively reduce the outward diffusion of heat, and the first seal member and the second seal member set between the first thermal insulation member and the second thermal insulation member can play a sealing role to prevent the high-pressure environment in the heating area from diffusing outward, thereby reducing heat loss during the diffusion process.

[0029] As a further improvement of the above scheme, the air outlet includes an air outlet cover wrapped around the outside of the heating cover, the heating cover is provided with baffles arranged in pairs, and the partition assembly is disconnected in the interval between the baffles, and its end is fixed to the baffles to prevent hot air from entering the isolation area;

[0030] The heating cover is provided with a plurality of perforations for blowing out hot air.

[0031] The technical effect of the above improvement is: through the provision of baffles and partition components, the isolation area can be isolated to prevent hot air from entering the isolation area to heat invalid positions, thereby improving heat utilization efficiency.

[0032] As a further improvement of the above scheme, a roller is fixedly arranged on the rotary kiln, a supporting wheel for supporting the roller is arranged below the rotary kiln, and limiting wheels for limiting the movement of the roller along the rotating shaft are also arranged on both sides of the roller;

[0033] A driving assembly for driving the rotary kiln to rotate is also arranged below the rotary kiln.

[0034] The technical effect of the above improvement is: the supporting wheel supports the rotary kiln, the limiting wheel restricts the roller to prevent movement to both sides, and the driving assembly drives the rotary kiln to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the state of hot air flow during the heating process of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a first embodiment of the present invention;

[0037] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction;

[0038] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0039] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure in the CC direction;

[0040] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure in the middle DD direction;

[0041] Figure 7 for Figure 2 Schematic diagram of the cross-sectional structure in the EE direction;

[0042] Figure 8 for Figure 4 A schematic diagram of the local enlarged structure at F in the middle;

[0043] Fig. 9 It is a schematic diagram of the working state when the movable plate moves on the first guide member;

[0044] Fig.10 It is a structural schematic diagram of a second embodiment of the present invention;

[0045] Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure in the GG direction;

[0046] Fig.12 for Fig.10 Schematic diagram of the local enlarged structure at H in the middle;

[0047] Fig.13 is a schematic structural diagram of a third embodiment of the present invention;

[0048] Fig.14 for Fig.13 Schematic diagram of the cross-sectional structure in the II direction;

[0049] Fig.15 for Fig.13 A schematic diagram of the local enlarged structure at J in the middle;

[0050] Fig.16 for Fig.14 Schematic diagram of the cross-sectional structure in the KK direction.

[0051] In the figure: 10, rotary kiln; 101, heat conducting member; 11, heating cover; 111, isolation area; 112, heating area; 12, air inlet; 13, air outlet; 14, partition assembly; 141, fixing plate; 142, first partition plate; 143, second partition plate; 144, guide seat; 145, spring; 15, first guide member; 151, guide hole; 16, air inlet cover; 17, second guide member; 171, guide surface; 18, first A movable area; 19, a second movable area; 20, a movable plate; 201, a through hole; 21, a first thermal insulation member; 22, a support plate; 23, a second thermal insulation member; 24, a first sealing member; 25, a connecting seat; 26, a second sealing member; 27, a sliding seat; 28, a pulling member; 29, a top pressure plate; 30, a blocking plate; 31, a one-way air inlet nozzle; 32, a pump; 33, a roller; 34, a support wheel; 35, a limiting wheel; 36, an air outlet cover; 37, a baffle. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0053] Embodiment 1:

[0054] like Figure 1-9 As shown, it is embodiment 1 of the present invention. The specific scheme of this embodiment is: a rotary kiln jet heating device, including a rotary kiln 10, a plurality of heating covers 11 are arranged on the outer side of the rotary kiln 10, the heating covers 11 wrap the rotary kiln 10, and are arranged to rotate relative to the rotary kiln 10, a roller 33 is fixedly arranged on the rotary kiln 10, the roller 33 is arranged at the interval between the two heating covers 11, a supporting wheel 34 for supporting the roller 33 is arranged below the rotary kiln 10, the supporting wheel 34 is rotatably arranged on the supporting base to support the rotary kiln 10, and limiting wheels 35 for limiting the movement of the roller 33 along the rotating axis are also arranged on both sides of the roller 33, as shown in FIG. Figure 2 , 6 As shown, the limiting wheels 35 are arranged on both sides of the roller 33, which can limit the movement of the rotary kiln 10 in the circumferential direction;

[0055] A driving assembly for driving the rotary kiln 10 to rotate is also provided below the rotary kiln 10. The driving assembly includes an electric motor, which is connected to a reducer and then to a driving gear. A gear meshing with the driving gear is provided on the rotary kiln 10. Specifically, during the heating process, the heating hood is connected to the gas hot blast furnace, and the heat after combustion in the hot blast furnace is introduced into the heating hood 11, thereby heating the rotary kiln. After the motor is started, the rotary kiln 10 can be driven to rotate, thereby realizing the tumbling and conveying of the material.

[0056] A plurality of air inlets 12 are provided below the heating cover 11, and the air inlets 12 are connected to the exhaust port of the gas furnace. Figure 1 , 2 As shown, in order to ensure that each section of the rotary kiln 10 can be heated continuously, a plurality of air inlets 12 are provided, and in order to ensure that the material can be quickly heated to the required temperature, the air inlets 12 are all used to introduce hot air from the bottom, so that when the hot air heats the heating cover 11, it can directly heat the area containing the material, thereby quickly heating it. The heating cover 11 is also provided with a plurality of air outlets 13 with openings facing upward, and the ends of every two heating covers 11 are provided with isolation components to prevent heat from overflowing; therefore, the hot air introduced from the air inlet 12 flows to the side of the air outlet 13 after heating the heating cover 11, thereby completing the flow heating treatment of the hot air;

[0057] like Figure 3 As shown, a partition component 14 is fixedly provided on the inner wall of the heating hood 11. In this embodiment, the partition component 14 is a partition plate. The partition component 14 divides the heating hood 11 into an isolation area 111 and a heating area 112. The heating area 112 is connected to the air inlet 12. Through the separation of the partition component 14, the part of the heating hood 11 that is not completely necessary to be heated can be separated into the isolation area 111, and the part where the material exists is mainly close to the heating area 112. In this way, when heating is performed, the heat is avoided from diffusing to unnecessary areas, and the heat is mainly concentrated in the heating area 112, so that the material is heated to the maximum extent and the heat is fully utilized.

[0058] A first guide member 15 is provided below the rotary kiln 10. The first guide member 15 is provided with a plurality of guide holes 151. The hot air passes through the guide holes 151 and directly hits the outer wall of the rotary kiln 10. In this embodiment, referring to Figure 2 , 3The first guide member 15 is in the shape of an arc plate, and the first guide member 15 is arranged in the entire heating area 112 along the rotation axis of the rotary kiln 10, and divides the heating area 112 into two parts, inner and outer. When the hot air enters the heating area from the air inlet 12, it will first enter the outer part isolated by the first guide member 15, and then directly hit the outer wall of the rotary kiln 10 after passing through the guide hole 151, so as to enter the inner part isolated by the first guide member 15, and break up the laminar insulation layer on the outer surface of the rotary kiln 10 and impact it into turbulence, so as to improve the heat transfer efficiency of the hot air. It should be stated that the so-called laminar insulation layer is a laminar layer naturally formed in the process of hot air flowing to the outlet in a traditional heating device, which is a characteristic of the fluid. The laminar layer is tightly attached to the surface of the rotary kiln 10, and the poor heat transfer of the laminar layer is equivalent to a kind of insulation layer.

[0059] In addition, in this embodiment, a movable plate 20 is slidably provided on the first guide member 15. The movable plate 20 is also an arc-shaped plate provided like the first guide member 15. A plurality of through holes 201 corresponding to the guide holes 151 are provided on the movable plate 20. The area of ​​the through holes 201 is larger than the area of ​​the guide holes 151. Fig. 9 As shown, the guide hole 151 is arranged to be a triangle, and the through hole 201 can be of any shape. In the present application, a rectangle is arranged. When the movable plate 20 moves on the first guide member 15, the through hole 201 gradually overlaps with the guide hole 151. When the through hole 201 and the guide hole 151 overlap, hot air can penetrate from the overlapping area. Therefore, the size of the overlapping area can control the air intake volume. The guide hole 151 is arranged to be a triangular structure, which can achieve precise linear control of the air intake volume, and the control amount is easier to grasp.

[0060] like Figure 2 , 4 As shown in Figures 5 and 8, the isolation assembly includes a first heat insulating member 21 which is sealed and fixedly arranged on the rotary kiln 10. A plurality of first heat insulating members 21 are used and assembled together around the rotary kiln 10. A support plate 22 is fixedly arranged at the end of the heating cover 11. A second heat insulating member 23 is fixedly arranged on the outer surface of the support plate 22. In this embodiment, the first heat insulating member 21 and the second heat insulating member 23 are both graphite plates that can be used for heat insulation. A plurality of first sealing members 24 for sealing are arranged between the second heat insulating member 23 and the first heat insulating member 21. The first sealing member is made of a rubber material, such as Figure 8, a plurality of valves inclined toward the second thermal insulation member 23 are arranged on the side of the first sealing member 24 that contacts the horizontal portion of the first thermal insulation member 21. When the air in the heating area 112 diffuses to the outside, it will first pass through the gap between the first thermal insulation member 21 and the second thermal insulation member 23, thereby forming a squeezing effect on the valves on the first sealing member 24. The internal and external pressure difference of the air can be used to enhance the sealing between the first sealing member 24 and the first thermal insulation member 21. The first thermal insulation member 21 rotates with the rotary kiln 10, so the vertical side surface of the first thermal insulation member 21 and the vertical side surface of the first sealing member 24 slide against each other. However, since the rotation speed of the rotary kiln 10 is relatively slow, generally 1 r / min or (1-2) r / min, it will not have much influence on the sealing effect.

[0061] Secondly, the first sealing member 24 is detachably provided with a connecting seat 25 that can move along the diameter direction of the rotary kiln 10, and the connecting seat 25 is sleeved with a second sealing member 26 that seals the first heat insulating member 21 and the second heat insulating member 23. The second sealing member 26 is specifically a rubber sealing sleeve. The connecting seat 25 is detachably provided with a sliding seat 27 that is slidably arranged with the support block. A pulling member 28 that pulls the sliding seat 27 and the end of the support plate 22 is provided between the sliding seat 27 and the support plate 22 to pull it outward. In this embodiment, the pulling member 28 is a spring, and the second sealing member 26 moves toward the connecting seat 25. During the outward pulling process, the vertical side surfaces of the first thermal insulation member 21 and the second thermal insulation member 23 can be squeezed, thereby achieving a further sealing effect. Under the pulling of the pulling member 28, the second sealing member 26 can always have a squeezing effect on the first thermal insulation member 21 and the second thermal insulation member 23, thereby achieving continuous sealing. The first thermal insulation member 21 and the second thermal insulation member 23 can prevent the heat in the heating area 112 from spreading outward, and the first sealing member 24 and the second sealing member 26 can prevent the airflow from overflowing and carrying out heat. Figure 8 As shown, a blocking plate 30 is fixedly arranged on the support plate 22, a support block is arranged between the blocking plate 30 and the support plate 22, the blocking plate 30, the support plate 22 and the support block are fixed by fastening bolts, the blocking plate 30 extends toward one side close to the rotary kiln 10, and is in sealing contact with the first heat insulating member 21, the blocking plate 30 supports the first heat insulating member 21, and a top pressure plate 29 sealed with the blocking plate 30 is also fixed on the first heat insulating member 21, the top pressure plate 29 is specifically an annular integral structure, which can further support the blocking plate 30 and the first heat insulating member 21;

[0062] like Figure 2 , 7As shown, in order to allow the hot air to be smoothly led out, the air outlet 13 includes an air outlet hood 36 wrapped around the outside of the heating hood 11, and the heating hood 11 is provided with baffles 37 arranged in pairs, the two baffles 37 are both within the wrapped range of the air outlet hood 36, and the interval between the two baffles 37 is smaller than the width of the air outlet hood 36, the partition assembly 14 is disconnected in the interval between the baffles 37, and its end is fixed to the baffle 37. In this embodiment, the end of the first guide member 15 and the baffle 37 are fixed to each other, and there is a gap between the part in the heating area 112 and the rotary kiln 10 for convenient hot air leading out, which can facilitate the hot air to be led out from the gap between the rotary kiln 10 after transferring heat to the rotary kiln 10, and diffuse into the air outlet hood 36 through the perforations on the heating hood 11, and block the hot air from entering the isolation area 111.

[0063] For more special cases, see the attached Figure 8 As shown, a one-way air inlet nozzle 31 is sealed and fixedly provided on the one-way air inlet nozzle 31, and the one-way air inlet nozzle 31 is connected to the pump 32 through a pipeline. The air inlet of the pump 32 is connected to the heating area 112 or is separately connected to a heater. Such a setting can introduce hot air into the sealing area where the second seal 26 and the first seal 24 are located when the sealing effect of the isolation component cannot be achieved and the air flow leaks out through the isolation component, thereby achieving pressure balance in the sealing area of ​​the cover to achieve a leakage-proof effect.

[0064] Embodiment 2:

[0065] like Figure 10-12 As shown, Example 2 of the present invention is a preferred embodiment of the above embodiments. Compared with Example 1, it is different in that: in this embodiment, the first air guide 15 is arranged at the air inlet 12 and is fixed to the heating hood 11. An air inlet hood 16 that completely surrounds the heating hood 11 and the first air guide 15 is also arranged on the outside of the heating hood 11 and the first air guide 15; the partition component 14 extends outward and contacts the inner wall of the air inlet hood 16, and divides the interior of the air inlet hood 16 into two parts, the upper and lower parts, and the air inlet 12 is connected to the lower part of the air inlet hood 16, so that the hot air entering from the air inlet 12 can completely pass through the first air guide 15 and enter the heating area 112.

[0066] like Fig.10 , 12As shown, in this embodiment, a plurality of second flow guides 17 fixed on the inner wall of the heating cover 11 are arranged in the heating area 112, and the second flow guides 17 are made of graphite material to reduce heat absorption. The second flow guides 17 are in the shape of a "C" strip, and an arc-shaped flow guide surface 171 is arranged on the windward surface of the second flow guide 17, and the tangent of the air outlet point on the flow guide surface 171 faces the rotary kiln 10, and a first active area 18 is formed between the two second flow guides 17 to facilitate the circumferential movement of hot air along the rotary kiln 10, and a plurality of heat-conducting members 101 protruding outward are arranged on the outer side wall of the rotary kiln 10, and the heat-conducting members 101 are arranged as heat-conducting sheets, and the heat-conducting members 101 are located in the first active area 18. In this embodiment, the partition assembly 14 is a partition sheet, A groove is also provided on the partition plate to facilitate the passage of the heat conductor 101; the edge of the second guide member 17 is close to the rotary kiln 10 and does not contact the rotary kiln 10. In this embodiment, when the hot air passes through the first guide member 15 and enters the heating area 112, it will first contact the second guide member 17. Under the guidance of the guide surface 171, the hot air is blown toward the rotary kiln 10, so that the laminar insulation layer on the surface of the rotary kiln 10 can be broken up again, and since a plurality of second guide members 17 are provided, the laminar insulation layer can be broken up many times, so that the heat conversion efficiency can be improved, and due to the provision of the heat conductor 101, it can further contact with the hot air, and the heat can be further introduced into the material, thereby improving the heat conversion efficiency.

[0067] Embodiment 3:

[0068] like Figure 13-16 As shown in the figure, it is the embodiment 3 of the present invention, which is the preferred mode of the above embodiment. Compared with the embodiment 2, it is different in that: in this embodiment, the heat conducting member 101 is provided with multiple sections on the outside of the rotary kiln 10, and the heat conducting member 101 is arranged obliquely in the interval between the two second flow guiding members 17, and does not contact the second flow guiding members 17, and the heat conducting members 101 are distributed in multiple groups, and the inclination directions of different groups are different. The second active area 19 between each two heat conducting members 101 is convenient for the hot air to change the position in the first active area 18. Please refer to the attached Fig.15 As shown;

[0069] In addition, in order to isolate the hot air in the heating area 112 when the heat-conducting member 101 moves synchronously, a partition assembly 14 is further provided. Specifically, the partition assembly 14 includes a fixed plate 141 fixed to the heating cover 11, and the upper and lower surfaces of the fixed plate 141 are respectively provided with a first partition plate 142 and a second partition plate 143 for reciprocating sliding. The first partition plate 142 and the second partition plate 143 are respectively provided with guide seats 144 for facilitating the passage of the heat-conducting member 101 in different inclined directions, and a spring 145 for pulling the first partition plate 142, the second partition plate 143 and the fixed plate 141 to reset is provided between them. Fig.15 , 16 In the specific working process, the guide seat 144 mainly guides the heat conducting member 101. For example, Fig.15 As shown in the example, when the rotary kiln 10 rotates and the heat conductor 101 moves downward, the first partition plate 142 or the second partition plate 143 will be pulled to the initial position under the pull of the spring 145. At this time, the guide seat 144 is located directly below the end of the heat conductor 101, and the heat conductor 101 and the guide seat 144 are in contact with each other. Under the guidance of the guide seat 144, the heat conductor 101 is inserted into the guide seat 144 and continuously pushes the second partition plate 143 or the first partition plate 142 to move on the fixed plate 141. In this way, when the first partition plate 142 and the first partition plate 142 move along the fixed plate 141, the gap between the isolation area 111 and the heating area 112 can be prevented from being too large, so as to prevent hot air from entering the isolation area 111, so as to adapt to the movement of the heat conductor 101.

[0070] In the specific working process of this embodiment, the hot air will first enter the heating area 112 through the first guide member 15, and then enter the first active area 18 under the guidance of the second guide member 17. In the process of continuous rotation of the rotary kiln 10, the heat conductor 101 guides the hot air, so that the hot air changes position in different first active areas 18 and second active areas 19, and for the heat conductors 101 in the same group, the approximate direction of the change of position of the hot air in different first active areas 18 and second active areas 19 is the same. In this way, from the overall point of view, the hot air will continuously change the flow trajectory similar to an "S" shape in the circumferential direction and circumferential direction along the rotating axis of the rotary kiln 10, and under the continuous blocking and disturbance of the heat conductor 101 and the second guide member 17, the laminar isolation layer on the surface of the rotary kiln 10 is completely broken, so that the formed laminar layer is continuously broken, and the formation of the laminar layer is reduced, so that the airflow state in the heating area 112 flows in a turbulent manner, thereby improving the heat transfer efficiency and reducing heat loss.

[0071] It should be noted that, in this article, the terms include, contain or any other variant 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. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A rotary kiln jet heating device, characterized in that: The rotary kiln (10) comprises a plurality of heating covers (11) arranged on the outside of the rotary kiln (10), a plurality of air inlets (12) arranged below the heating covers (11), a plurality of air outlets (13) opening upwardly arranged on the heating covers (11), and an isolation component for preventing heat from spilling out is arranged at the ends of every two heating covers (11); The isolation assembly comprises a first heat insulating member (21) sealed and fixedly arranged on the rotary kiln (10); a support plate (22) is fixedly arranged at the end of the heating cover (11); a second heat insulating member (23) is fixedly arranged on the outer side of the support plate (22); and a plurality of first sealing members (24) for sealing are arranged between the second heat insulating member (23) and the first heat insulating member (21); A connecting seat (25) movable along the diameter direction of the rotary kiln (10) is detachably provided on the first sealing member (24), and a second sealing member (26) for sealing the first heat insulating member (21) and the second heat insulating member (23) is sleeved on the connecting seat (25); A blocking plate (30) is fixedly arranged on the support plate (22), a support block is arranged between the blocking plate (30) and the support plate (22), the blocking plate (30) extends in a direction close to a side of the rotary kiln (10) and is in sealing contact with the first heat insulating member (21), and a top pressure plate (29) is also fixed on the first heat insulating member (21) and is sealed with the blocking plate (30); A sliding seat (27) is detachably provided on the connecting seat (25) and is slidably arranged with respect to the supporting block. A pulling member (28) is provided between the sliding seat (27) and the end of the supporting plate (22) for pulling the sliding seat (27) to move outward. A partition component (14) is fixedly arranged on the inner wall of the heating cover (11), and the partition component (14) divides the interior of the heating cover (11) into an isolation area (111) and a heating area (112), and the heating area (112) is connected to the air inlet (12); A first flow guide (15) is arranged below the rotary kiln (10), and a plurality of flow guide holes (151) are arranged on the first flow guide (15), so that hot air passes through the flow guide holes (151) and directly hits the outer wall of the rotary kiln (10).

2. A rotary kiln jet heating device according to claim 1, characterized in that: The first flow guide (15) is arranged in the entire heating area (112) along the rotation axis of the rotary kiln (10), and divides the heating area (112) into two parts, an inner part and an outer part; The first flow guide (15) is in the shape of an arc plate.

3. The rotary kiln jet heating device according to claim 1, characterized in that: The first air guide (15) is arranged at the air inlet (12) and is fixedly arranged with the heating cover (11), and an air inlet cover (16) is also arranged outside the heating cover (11) and the first air guide (15) to completely surround the heating cover (11); The partition assembly (14) extends outward and contacts the inner wall of the air inlet cover (16), and divides the interior of the air inlet cover (16) into upper and lower parts, and the air inlet (12) is connected to the lower part of the air inlet cover (16).

4. A rotary kiln jet heating device according to claim 3, characterized in that: A plurality of second flow guide members (17) fixed to the inner wall of the heating cover (11) are arranged in the heating area (112); a first movable area (18) is formed between the two second flow guide members (17) to facilitate the circumferential movement of hot air along the rotary kiln (10); and a plurality of heat conducting members (101) protruding outward are arranged on the outer wall of the rotary kiln (10); the heat conducting members (101) are located in the first movable area (18); The edge of the second flow guide member (17) is close to the rotary kiln (10) and does not contact the rotary kiln (10), and a curved flow guide surface (171) is provided on the windward surface of the second flow guide member (17), and a tangent line of an air outlet point on the flow guide surface (171) faces the rotary kiln (10).

5. The rotary kiln jet heating device according to claim 4, characterized in that: The heat conducting member (101) is provided with multiple sections on the outer side of the rotary kiln (10), and the heat conducting member (101) is arranged obliquely in the interval between the two second flow guiding members (17) without contacting the second flow guiding members (17), and the heat conducting members (101) are distributed in multiple groups, and the inclination directions of different groups are different, so that the second active area (19) between each two heat conducting members (101) is convenient for hot air to change positions in different first active areas (18); The partition assembly (14) comprises a fixed plate (141) fixed on the heating cover (11); a first partition plate (142) and a second partition plate (143) are respectively provided on the upper and lower surfaces of the fixed plate (141) for reciprocating sliding; guide seats (144) are respectively provided on the first partition plate (142) and the second partition plate (143) for facilitating the passage of heat-conducting members (101) with different inclined directions; and springs (145) are provided between the first partition plate (142), the second partition plate (143) and the fixed plate (141) for pulling them to return to their original positions.

6. A rotary kiln jet heating device according to any one of claims 1 to 5, characterized in that: A movable plate (20) is slidably disposed on the first flow guide member (15), and a plurality of through holes (201) corresponding to the flow guide holes (151) are disposed on the movable plate (20), and the area of ​​the through holes (201) is larger than the area of ​​the flow guide holes (151); When the movable plate (20) moves on the first flow guide member (15), the through hole (201) gradually overlaps with the flow guide hole (151).

7. The rotary kiln jet heating device according to claim 1, characterized in that: The air outlet (13) comprises an air outlet cover (36) wrapped around the outside of the heating cover (11), the heating cover (11) is provided with baffles (37) arranged in pairs, and the partition assembly (14) is disconnected in the interval between the baffles (37), and its end is fixedly arranged with the baffles (37) to prevent hot air from entering the isolation area (111); The heating cover (11) is provided with a plurality of perforations for facilitating the blowing out of hot air.

8. The rotary kiln jet heating device according to claim 1, characterized in that: A roller (33) is fixedly arranged on the rotary kiln (10), a supporting wheel (34) for supporting the roller (33) is arranged below the rotary kiln (10), and limiting wheels (35) for limiting the movement of the roller (33) along the rotation axis are also arranged on both sides of the roller (33); A driving assembly for driving the rotary kiln (10) to rotate is also provided below the rotary kiln (10).

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