Rapping rotary kiln
By setting up a vibrating mechanism on the outer wall of the rotary kiln and using the design of small balls and vibrating hammers, the problem of bonding and stacking of iron phosphate powder on the wall of the rotary kiln is solved, and the uniform calcination and smooth discharge of the powder is achieved, reducing energy consumption and labor intensity.
Patent Information
- Application Number
- CN202421854582.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-01
AI Technical Summary
Iron phosphate powder is easy to bond and accumulate on the wall of the rotary kiln, resulting in large energy consumption, hindered powder discharge, and high labor intensity. The existing rotary kiln design has the problem of uneven calcination.
A plurality of first and second vibration mechanisms are provided on the outer wall of the rotary kiln. By utilizing the reciprocating movement of the ball and the hammer, the rolling ball and the extrusion of the wedge surface blocks are restricted by the bent portion, so that uniform vibration and bending on the side wall of the rotary kiln can be achieved, preventing powder bonding and promoting discharge.
Effectively prevent the bonding of iron phosphate powder on the wall of the rotary kiln, ensure uniform calcination and smooth discharge of the powder, reduce energy consumption, reduce manual intervention, and improve the operating environment.
Smart Images
Figure CN223077373U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotary kilns, and particularly relates to a vibrating rotary kiln. Background Art
[0002] Lithium iron phosphate is an electrode material for lithium-ion batteries, mainly used in various lithium-ion batteries. Rotary kilns are commonly used for processing and treating lithium iron phosphate. The rotary kiln is a long steel cylinder lined with refractory materials. The furnace body is supported on several pairs of supporting rollers and has an inclination of 0% - 3%. The kiln body is slowly rotated by an electric motor through gears. Materials are added from the higher furnace head and discharged from the lower tail end. Fuel (pulverized coal, heavy oil or gaseous fuel) is sprayed into the furnace head end and burned in the furnace, and the flue gas is discharged from the higher end (the materials and the flue gas flow countercurrently).
[0003] However, after the lithium iron phosphate powder material is filtered and washed, it is generally relatively viscous. If the drying is uneven, the viscous wet material may adhere to the wall surface of the rotary kiln, resulting in relatively high energy consumption. In addition, after adhering to the kiln head at a low position, it not only hinders the discharge of the powder material, but also requires manual auxiliary discharging, with high labor intensity and harsh working environment. Therefore, it is necessary to develop a vibrating rotary kiln. Summary of the Utility Model
[0004] The utility model aims to provide a vibrating rotary kiln to solve the problems that when the existing rotary kiln calcines lithium iron phosphate powder material, the lithium iron phosphate powder material is prone to adhere to the wall surface of the rotary kiln and accumulate at the kiln head.
[0005] To solve the above problems, the technical solution adopted by the utility model is as follows: a vibrating rotary kiln, comprising a rotary kiln, a base below the rotary kiln, and a transmission device on the base for the rotary kiln to rotate. A plurality of first vibrating mechanisms are respectively arranged at intervals on the outer walls of both ends of the rotary kiln. The first vibrating mechanism comprises a shell and small balls. The shell is vertically arranged perpendicular to the side wall of the rotary kiln, and the small balls are located inside the shell and can roll along the shell. The upper end of the shell is bent, and the included angle between the bent part and the shell is not less than 90°, and the orientation of the bent part is opposite to the rotation direction of the rotary kiln.
[0006] The basic principle of this solution is: the shell of the first vibrating mechanism is fixed on the outer wall of the rotary kiln, and the small balls inside the shell can roll freely. When the shell rotates to the highest point at the top of the rotary kiln, the small balls freely fall, and the side wall of the rotary kiln is knocked by the self-weight of the small balls. Mark this point as the starting point of rotation. After rotating 180°, the small balls enter the bent part of the shell. Since the orientation of the bent part is opposite to the rotation direction, the small balls are restricted from rolling by the side wall of the bent part after falling into the bent part until the bent part is parallel to the horizontal plane when rotating to the starting point again, and the small balls begin to roll out from the bent part of the shell and vertically fall along the top of the shell. In this way, the side wall of the rotary kiln is reciprocally vibrated as the rotary kiln rotates.
[0007] The beneficial effects of this solution are as follows: When the existing rotary kiln calcines iron phosphate powder materials, due to the wet and sticky nature of the iron phosphate powder materials, they are easily adhered to the inner wall of the rotary kiln, resulting in blocked discharge of the powder materials and uneven calcination. This solution sets up multiple first vibration mechanisms. By using the rotation of the rotary kiln itself to drive the small balls in the shell to reciprocate, and restricting the rolling of the small balls in the shell through the bending part, the small balls are located at the top of the shell before each fall, thereby extending the falling distance of the small balls and achieving uniform and spaced vibration of the side wall of the rotary kiln. The vibration causes the powder materials on the inner wall of the rotary kiln to fall off, ensuring the smooth discharge of the powder materials from the rotary kiln.
[0008] Furthermore, reinforcing ear plates are provided on both sides of the outer wall of the shell, and a reinforcing block is provided on the outer wall of the rotary kiln on the front side of the shell. A reinforcing rope for lifting and connecting the side wall of the shell passes through between the two reinforcing ear plates, and the other end of the reinforcing rope is fixed to the reinforcing block. By winding the reinforcing rope around the outer wall of the shell, the vibration of the shell is stabilized, and the shell is prevented from cracking and flying apart after being repeatedly hammered by the small balls, injuring the staff.
[0009] Furthermore, a second vibration mechanism is provided in the middle of the rotary kiln. The second vibration mechanism includes a fixing ring, a vibration hammer, a positioning sleeve, and a spring. The fixing ring is sleeved on the outer wall of the rotary kiln. A number of wedge-shaped blocks are provided at intervals along the outer peripheral wall of the fixing ring. The vibration hammer is slidably connected in the positioning sleeve. One end of the vibration hammer located in the positioning sleeve is connected to the positioning sleeve through a spring. The end of the vibration hammer away from the spring is the hammer head, and the hammer head touches the top wall of the wedge-shaped block. The top wall of the wedge-shaped block is an inclined surface that gradually extends from low to high, and along the rotation direction of the rotary kiln, the lower end of the wedge-shaped block is in front of the higher end of the wedge-shaped block.
[0010] By sleeving the fixing ring on the outer wall of the rotary kiln, when the rotary kiln works, the rotary kiln rotates along its axis, driving the fixing ring to drive, and the wedge-shaped blocks outside the fixing ring move accordingly. When the hammer head of the vibration hammer touches the lowest point of the wedge-shaped block, the amount of the vibration hammer extending out of the positioning sleeve is the largest. As the wedge-shaped block moves relative to the vibration hammer, the wedge-shaped block gradually presses the vibration hammer into the positioning sleeve and compresses the spring. When the highest point of the wedge-shaped block leaves the vibration hammer, the vibration hammer pops out of the positioning sleeve under the action of the spring restoring deformation, and the hammer head impacts the outer wall of the fixing ring. The hammer head causes the inner wall of the rotary kiln to vibrate and shakes off the sticky powder materials on the inner wall of the rotary kiln.
[0011] Furthermore, the wedge-shaped block is detachably connected to the outer wall of the fixing ring. A ring groove is opened on the outer wall of the fixing ring. A number of first through holes that penetrate the side wall and are symmetric are provided at intervals along the two side walls of the ring groove. Two second through holes are provided through the side wall of the wedge-shaped block. The wedge-shaped block is fixed in the ring groove of the fixing ring by a bolt assembly passing through the first through hole and the second through hole at the same time. By providing a number of first through holes, the number and spacing distance of the wedge-shaped blocks can be adjusted according to the actual vibration frequency requirements.
[0012] Further, the hammer head of the rapping hammer is an incomplete circle, with a strip-shaped opening inside. The width of the strip-shaped opening corresponds to the width of the wedge block. A roller is rotatably connected inside the strip-shaped opening of the hammer head, and the roller can touch the top wall of the wedge block. In order to facilitate the smooth sliding of the hammer head on the surface of the wedge block, a roller is built into the hammer head to reduce the friction between the hammer head and the top wall of the wedge block.
[0013] Further, the included angle between the central axis of the rotary kiln and the horizontal plane is 3° - 5°. Thereby, the powder can be gradually discharged by gravity.
[0014] Further, the number of rapping mechanisms is two. One is arranged at the kiln head of the rotary kiln for discharging materials, and the other is arranged outside the middle side wall of the rotary kiln. A rapping hammer is arranged at the kiln head of the rotary kiln to prevent blockage at the kiln head, and a rapping hammer is arranged in the middle to promote the detachment of the powder.
[0015] Further, each rapping mechanism includes two rapping hammers. One rapping hammer is arranged above the top of the rotary kiln, and the other rapping hammer is arranged beside the rotary kiln. Tapping the side wall of the rotary kiln from the top makes it easier for the powder to detach.
[0016] Further, the hammer head of the rapping hammer is a rubber hammer head. The flexibility of the rubber can effectively distribute the impact force, thereby reducing the direct impact on the side wall. Description of the Drawings
[0017] Figure 1 is the overall schematic diagram of the rotary kiln in the embodiment of the present utility model;
[0018] Figure 2 is Figure 1 the enlarged schematic diagram of part A in
[0019] Figure 3 is the schematic diagram of the housing of the first rapping mechanism;
[0020] Figure 4 is the schematic diagram of the second rapping mechanism in the embodiment of the present utility model;
[0021] Figure 5 is the partial side sectional view at the wedge block on the fixing ring of the second rapping mechanism 4. Detailed Description of the Embodiment
[0022] The following is a further detailed description through specific embodiments:
[0023] The reference numerals in the accompanying drawings of the specification include: rotary kiln 1, base 21, drive device 22, first vibration mechanism 3, housing 31, small balls 32, bent portion 33, reinforcing block 34, reinforcing ear plate 35, reinforcing rope 36, second vibration mechanism 4, fixing ring 5, vibration hammer 6, spring 7, annular groove 8, wedge-shaped block 9, first through hole 10, second through hole 11, hammer head 12, roller 13, support 14.
[0024] The embodiment is basically as shown in the attached Figure 1 to the attached Figure 5 figures:
[0025] A vibrating rotary kiln includes a rotary kiln 1 body and a base 21 arranged below the rotary kiln 1 body. A drive device 22 for the rotary kiln 1 body to rotate is installed on the base 21. The included angle between the central axis of the rotary kiln 1 and the horizontal plane is 3°. First vibration mechanisms and a second vibration mechanism 4 are respectively arranged on the outer wall of the rotary kiln 1 body. The first vibration mechanisms are arranged in two places, respectively on the outer walls at both ends of the rotary kiln body. Among them, the number of the first vibration mechanisms at each place is 4, and the 4 first vibration mechanisms are arranged at intervals in the circumferential direction of the outer wall of the rotary kiln. The second vibration mechanism 4 is one and is arranged on the outer wall in the middle of the rotary kiln 1.
[0026] As shown in Figure 2 and 3 the first vibration mechanism 3 shown, the first vibration mechanism 3 includes a housing and small balls 32. The housing is arranged perpendicular to the side wall of the rotary kiln 1. In this embodiment, a bent portion 33 is arranged at the upper end of the housing. The housing is integrally in the shape of a right-angled pipe, and small balls 32 that can roll freely are installed inside the housing. The orientation of the bent portion 33 is opposite to the rotation direction of the rotary kiln 1, which is convenient for the small balls 32 to be restricted in the bent portion 33 before the housing 31 rotates to the highest point of the rotary kiln 1 with the rotation of the housing 31. Until reaching the highest point of the rotary kiln 1, and then freely falling from the top of the housing 31, that is, ensuring that the falling height of each small ball 32 is the same.
[0027] Symmetric reinforcing ear plates 35 are respectively fixed on both sides of the housing 31. A reinforcing block 34 is fixed on the front side wall of the housing 31. A reinforcing rope 36 passes between the reinforcing ear plate 35 and the reinforcing block 34, and the reinforcing rope 36 bypasses and lifts the rear side wall of the housing 31, thereby further stabilizing the housing 31 and preventing the housing 31 from flying and injuring the staff after the small balls 32 knock multiple times and damage the housing 31.
[0028] As shown in the attached Figure 4Side view of the second vibration mechanism 4 shown. The second vibration mechanism 4 includes a fixing ring 5, a vibration hammer 6, and a spring 7. The fixing ring 5 is sleeved on the outer peripheral wall of the rotary kiln 1. An annular groove 8 with an opening facing outward is provided on the outer periphery of the fixing ring 5. A plurality of wedge-shaped blocks 9 arranged at intervals are slidably clamped in the annular groove 8. A plurality of first through holes 10 penetrating the side walls are symmetrically opened on two opposite side walls of the annular groove 8. The wedge-shaped block 9 is as Figure 3 shown. The upper end of the wedge-shaped block 9 is an inclined surface gradually extending upward from the bottom. Two through second through holes 11 are opened at the lower end of the wedge-shaped block 9. The bolt assembly can pass through the first through hole 10 and the second through hole 11 at the same time to fix the wedge-shaped block 9 in the annular groove 8.
[0029] In this embodiment, the number of wedge-shaped blocks 9 is 8, and the number of wedge-shaped blocks 9 can be adjusted according to the vibration frequency.
[0030] A positioning sleeve is fixed outside the fixing ring 5 through a bracket 14. The vibration hammer 6 is slidably connected to the inside of the positioning sleeve. The end of the vibration hammer 6 away from the positioning sleeve is an incomplete circular hammer head 12. The hammer head 12 is made of rubber. A strip-shaped opening is opened inside the hammer head 12. A roller 13 with a diameter smaller than the hammer head 12 of the vibration hammer 6 is rotatably installed in the strip-shaped opening. The circumferential side wall of the roller 13 can rotate in contact with the surface of the wedge-shaped block 9. Thus, during the rotation of the entire rotary kiln 1, when the hammer head 12 contacts the wedge-shaped block 9, the opening width of the hammer head 12 can just accommodate the wedge-shaped block 9. When the hammer head 12 leaves the wedge-shaped block 9, the end of the hammer head 12 can contact the outer wall of the fixing ring, so that the rubber part of the hammer head 12 beats the fixing ring, achieving the effect of beating the side wall of the rotary kiln 1.
[0031] In this embodiment, the number of vibration hammers 6 in each second vibration mechanism 4 is two. One vibration hammer 6 is arranged directly above the rotary kiln 1, and the other vibration hammer 6 is arranged on the side of the rotary kiln 1. Thus, two vibration hammers 6 are arranged on the circumferential side wall of one fixing ring 5.
[0032] The specific implementation process is as follows:
[0033] The shell 31 of the first vibration mechanism 3 is fixed on the outer wall of the rotary kiln 1. The small balls 32 inside the shell 31 can roll freely. When the shell 31 rotates to the highest point at the top of the rotary kiln 1, the small balls 32 fall freely, and the side wall of the rotary kiln 1 is knocked by the self-weight of the small balls 32. This point is recorded as the starting point of rotation. After rotating 180°, the small balls 32 enter the bent part 33 of the shell 31. Since the orientation of the bent part 33 is opposite to the rotation direction, the small balls 32 are restricted from rolling by the side wall of the bent part 33 after falling into the bent part 33 until the bent part 33 is parallel to the horizontal plane when rotating to the starting point again, and the small balls 32 begin to roll out from the bent part 33 of the shell 31 and fall vertically along the top of the shell 31. In this way, the side wall of the rotary kiln 1 is reciprocally vibrated as the rotary kiln 1 rotates.
[0034] Meanwhile, the second rapping mechanism 4 also works with the rotation of the rotary kiln 1. Two fixing rings 5 are respectively fixed on the outer wall of the rotary kiln 1. Wedge blocks 9 are installed at intervals on the outer periphery of the fixing ring 5. The installation directions of the wedge blocks 9 are the same, and along the rotation direction of the fixing ring 5, the end with the lower slope at the top of the wedge block 9 is in the front, and the end with the higher slope at the top of the wedge block 9 is in the back. The rapping hammer 6 is fixed on the outer periphery of the fixing ring 5 through the bracket 14, and the roller 13 in the hammer head 12 of the rapping hammer 6 is in contact with the top wall of the wedge block 9. The rotary kiln 1 is started to calcine the iron phosphate powder material. The rotary kiln 1 rotates along its axis, and at the same time, the fixing ring 5 rotates accordingly. Since the rapping hammer 6 is stationary relative to the fixing ring 5, when the wedge block 9 of the fixing ring 5 gradually passes by the rapping hammer 6, the rapping hammer 6 is extruded into the positioning sleeve, so that the spring 7 is compressed. When the highest point of the fixing ring 5 drives the wedge block 9 away from the rapping hammer 6, the spring 7 of the rapping hammer 6 restores its elastic deformation, causing the rapping hammer 6 to pop out and strike the side wall of the fixing ring 5, so that the powder adhered to the inner wall of the rotary kiln 1 is vibrated and detached from the inner wall of the rotary kiln 1.
[0035] The above are only the embodiments of the present invention, and common knowledge such as the specific structures and characteristics known in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.
Claims
1. A vibrating rotary kiln, comprising a rotary kiln, a base below the rotary kiln, and a transmission device on the base for the rotary kiln to rotate, characterized in that: A number of first vibration mechanisms are respectively arranged at intervals on the outer walls of both ends of the rotary kiln. The first vibration mechanism includes a housing and small balls. The housing is vertically arranged perpendicular to the side wall of the rotary kiln. The small balls are located inside the housing and can roll along the housing. The upper end of the housing is bent, and the angle between the bent part and the housing is not less than 90°, and the orientation of the bent part is opposite to the rotation direction of the rotary kiln. A second vibration mechanism is arranged in the middle of the rotary kiln. The second vibration mechanism includes a fixing ring, a vibration hammer, a positioning sleeve, and a spring. The fixing ring is sleeved on the outer wall of the rotary kiln. A number of wedge-shaped blocks are arranged at intervals along the outer peripheral wall of the fixing ring. The vibration hammer is slidably connected in the positioning sleeve. One end of the vibration hammer located in the positioning sleeve is connected to the positioning sleeve through a spring. The end of the vibration hammer away from the spring is a hammer head, and the hammer head touches the top wall of the wedge-shaped block. The top wall of the wedge-shaped block is an inclined plane that gradually extends from low to high, and along the rotation direction of the rotary kiln, the lower end of the wedge-shaped block is in front of the higher end of the wedge-shaped block.
2. The vibrating rotary kiln according to claim 1, wherein: Reinforcing ear plates are arranged on both sides of the outer wall of the housing. A reinforcing block is arranged on the outer wall of the rotary kiln on the front side of the housing. A reinforcing rope for lifting and connecting the side wall of the housing passes through between the two reinforcing ear plates, and the other end of the reinforcing rope is fixed on the reinforcing block.
3. The vibrating rotary kiln according to claim 1, wherein: The wedge-shaped block is detachably connected to the outer wall of the fixing ring. A ring groove is formed on the outer wall of the fixing ring. A number of first through holes that penetrate the side wall and are symmetric are arranged at intervals along the two side walls of the ring groove. Two second through holes are penetrated and arranged on the side wall of the wedge-shaped block. The wedge-shaped block is fixed in the ring groove of the fixing ring by a bolt assembly passing through the first through hole and the second through hole at the same time.
4. The vibrating rotary kiln according to claim 1, characterized in that: The hammer head of the vibration hammer is an incomplete circle. A strip-shaped opening is formed inside the hammer head. The width of the strip-shaped opening corresponds to the width of the wedge-shaped block. A roller is rotatably connected in the strip-shaped opening of the hammer head, and the roller can touch the top wall of the wedge-shaped block.
5. A vibrating rotary kiln according to claim 1, characterized in that: The included angle between the central axis of the rotary kiln and the horizontal plane is 3° - 5°.
6. The shaking rotary kiln according to claim 1, wherein: The second vibration mechanism includes two vibration hammers. One vibration hammer is arranged above the top of the rotary kiln, and the other vibration hammer is arranged beside the rotary kiln.
7. A vibrating rotary kiln according to claim 6, characterized in that: The hammer head of the vibration hammer is a rubber hammer head.