Knocking device for rotary kiln

Abstract

The utility model discloses a knocking device for a rotary kiln, which comprises the rotary kiln and a knocking device arranged on the rotary kiln, and the knocking device comprises a movable pipe, a fixed pipe and a sliding locking structure; the fixed pipe is fixedly connected with the rotary kiln, and the movable pipe is detachably connected with the fixed pipe through a sliding locking structure. A plurality of freely movable knocking balls are arranged in the movable pipe; the knocking device rotates along with the rotary kiln at the same time, the knocking balls in the knocking device roll in the movable pipe and the fixed pipe along with gravity, so that the feeding end of the rotary kiln is knocked, the rotary kiln can be knocked many times due to the fact that the multiple knocking balls fall down in sequence, and the feeding end of the rotary kiln is knocked. Meanwhile, the knocking point of the knocking ball at each time can be changed along with the falling point, so that the probability that the rotary kiln deforms due to knocking is reduced, the knocking ball in the knocking device can be replaced according to different particle sizes and adhesion degrees of calcined materials, and the influence of knocking on the rotary kiln is reduced while the knocking operation is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotary kiln device, especially involves a knocking device for rotary kiln. BACKGROUND

[0002] The rotary kiln is mainly used for high-temperature roasting in lithium battery positive material production, and its core function is to realize accurate regulation of material crystal structure and full chemical reaction through dynamic calcination. The material rolls constantly in the rotation process of the kiln body, is heated uniformly, and is prevented from being locally overburned or underburned. It is suitable for large-scale industrial production, and the material residence time can be accurately controlled through the rotation speed of the kiln body.

[0003] The knocking device of the rotary kiln is a mechanical device specially designed to optimize the operation efficiency of the kiln body, and its core function is to prevent material adhesion or assist in the masonry of refractory bricks through periodic knocking. The knocking device is a mechanical structure installed on the outer wall or inside of the rotary kiln, which produces periodic knocking action through external force or self-weight, mainly for sticky materials to avoid adhesion and caking on the kiln wall. The external automatic knocking device is installed on the outer wall of the kiln body, and relies on the rotation of the kiln body or independent driving to achieve knocking. It is a pure mechanical structure that does not require additional power source, and has low maintenance cost.

[0004] The prior art discloses a rotary kiln, which comprises a rotary kiln body, a screen mesh and a discharge port located at the kiln tail, characterized in that a knocking hammer is arranged on the rotary kiln body near the screen mesh. With the rotation of the rotary kiln, the knocking hammer rotates with it, and the position of the knocking hammer changes relative to the rotary kiln under the action of gravity. In this process, the screen mesh is vibrated and prevented from being blocked by automatically knocking the kiln wall.

[0005] However, the prior art scheme still has some problems in use, for example: lithium battery positive materials are lithium iron phosphate and lithium manganese iron phosphate, and the proportion of iron source, phosphorus source and carbon source needs to be adjusted according to production requirements, so the particle size and adhesion degree of the calcined material are different, and the knocking force requirement is different; the rotary kiln cylinder is made of steel plate by rolling and welding, and the steel plate near the knocking point is permanently deformed due to repeated plastic deformation under the periodic heavy knocking of the knocking device for a long time, which will damage the circular cross section of the kiln body and affect the uniformity of material flow,

[0006] Therefore, on the basis of the prior art, we still need to design a knocking device for rotary kiln with adjustable knocking force to solve the problems raised in the above. CONTENT OF THE UTILITY MODEL

[0007] The utility model solves the technical problems of how to adjust the knocking force of the knocking device and the stress uniformity according to different raw materials.

[0008] Technical solution: A kind of knocking device for rotary kiln, including rotary kiln and the knocking device of being installed on rotary kiln, the knocking device includes movable tube, fixed tube and sliding locking structure;The fixed tube is fixedly connected with rotary kiln, and the movable tube is detachably connected with fixed tube by sliding locking structure;And several freely moving knock balls are equipped in movable tube, when rotary kiln rotates, knock ball in movable tube falls into fixed tube and knocks on the surface of rotary kiln.

[0009] Further, the sliding locking structure includes locking sleeve, first limiting ring and second limiting ring, one end of the locking sleeve is located between the first limiting ring and the second limiting ring, a plurality of ball grooves are provided at the other end of the locking sleeve, and sliding balls are provided in the locking sleeve, and a limiting groove matched with the sliding balls is provided at the upper end of the movable tube;The end of the locking sleeve close to the ball groove is further provided with a locking ring for pushing the sliding ball into the limiting groove;A compression spring is provided between the second limiting ring and the locking ring.

[0010] Further, the first limiting ring and the second limiting ring are fixedly installed at the end of the fixed tube, and the locking ring is fixedly connected with the locking sleeve.

[0011] Further, the cross section of the locking ring is a right trapezoid, and the inclined surface of the locking ring faces the sliding ball.

[0012] Further, the end of the limiting groove close to the fixed tube is inclined to the fixed tube.

[0013] Further, the end of the ball groove away from the movable tube has a diameter smaller than that of the sliding ball.

[0014] Further, the movable tube is a first movable tube with a straight tube structure at the lower end or a second movable tube with an elbow structure at the lower end, wherein the curved arc of the elbow structure is a maximum curvature.

[0015] Advantages: Compared with the prior art, the knocking device of the utility model rotates with the rotary kiln, the knock balls in the knocking device roll in the movable tube and the fixed tube under the action of gravity, and then fall into the fixed tube to knock on the surface of the rotary kiln, so that the knocking device can be replaced according to the particle size and adhesion of the calcined material, and the influence of knocking on the rotary kiln can be reduced while meeting the knocking operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic view of the utility model;

[0017] Figure 2The utility model discloses a knocking device for rotary kiln,

[0018] Figure 3 The utility model discloses Figure 2 A zone partial close -up drawing of the utility model,

[0019] Figure 4 It is the perspective drawing of the first movable pipe of the utility model,

[0020] Figure 5 It is the perspective drawing of the second movable pipe of the utility model. Specific implementation

[0021] The technical scheme of the utility model will be further explained in detail in connection with the drawings and embodiments.

[0022] Please refer to Figures 1-5 A kind of knocking device for rotary kiln, including rotary kiln 1, rotary kiln 1 one end is provided with rotary kiln feed end 2, the lower end of rotary kiln feed end 2 is installed knocking device 3, knocking device 3 includes movable pipe 4, fixed tube 5 and sliding locking structure, movable pipe 4 is divided into first movable pipe 41 and second movable pipe 42 two different structures, fixed tube 5 is fixedly connected with rotary kiln feed end 2, movable pipe 4 is located at the lower end of fixed tube 5, sliding locking structure is sleeved at the outside of the connecting place of movable pipe 4 and fixed tube 5, the inside of movable pipe 4 is rolled and arranged with multiple knocking balls 12.

[0023] When using, knocking device 3 rotates with rotary kiln 1 simultaneously, and the knocking ball 12 in the knocking device 3 rolls in the inside of movable pipe 4 and fixed tube 5 along with gravity, so as to fall in the bottom end of fixed tube 5, and knock rotary kiln feed end 2, since multiple knocking balls fall down in turn, can produce multiple knockings to rotary kiln 1 in turn, and the knocking point of knocking ball 12 every time can change along with landing point, so as to reduce the probability that rotary kiln 1 is deformed due to knocking, according to the granularity and adhesion degree of calcined material, knocking ball 12 in knocking device 3 can be replaced, while satisfying the knocking operation, reduce the influence of knocking to rotary kiln 1,

[0024] Please refer to Figures 2-3, the sliding locking structure comprises a locking sleeve 6, a first limiting ring 7 and a second limiting ring 8, the first limiting ring 7 is located at the upper end of the second limiting ring 8, and the first limiting ring 7 is fixedly installed on the outer surface of the fixed pipe 5; the upper end of the locking sleeve 6 is located between the first limiting ring 7 and the second limiting ring 8. A plurality of ball sliding grooves 14 are annularly formed in the lower end of the locking sleeve 6, and balls 11 are slidably arranged in the ball sliding grooves 14; the diameter of the end of the ball sliding groove 14 away from the movable pipe 4 is smaller than the diameter of the ball 11. A locking ring 10 is fixedly installed at the lower end in the locking sleeve 6, a compression spring 9 is arranged between the locking ring 10 and the second limiting ring 8, the cross section of the locking ring 10 is a right trapezoidal structure, the inclined surface of the locking ring 10 is in rolling connection with the ball 11, the upper end of the first movable pipe 41 and the second movable pipe 42 is provided with a movable pipe connecting end 13, a plurality of limiting grooves 15 are annularly formed in the outer portion of the upper end of the movable pipe connecting end 13, and the limiting grooves 15 are correspondingly arranged with the ball sliding grooves 14. The end of the limiting groove 15 close to the fixed pipe 5 is obliquely arranged towards the end close to the fixed pipe 5.

[0025] When the locking sleeve 6 is pushed towards the first limiting ring 7 during replacement, when the pushing force is greater than the elastic force of the compression spring 9, the locking sleeve 6 moves, so that one end surface of the locking sleeve 6 is in abutment with the first limiting ring 7, and the locking ring 10 moves synchronously with the locking sleeve 6; after the locking ring 10 is dislocated from the ball sliding groove 14, the locking of the ball 11 by the locking ring 10 is released, the ball 11 rolls to the inside of the ball sliding groove 14 under the action of gravity, thereby leaving the limiting groove 15, and the rolled-out ball 11 releases the locking of the movable pipe 4; at this time, the movable pipe 4 is extracted, and the knocking ball 12 can be replaced; after the replacement is completed, the movable pipe 4 is inserted into the fixed pipe 5 again, the ball 11 is correspondingly arranged in the ball sliding groove 14 and the limiting groove 15, the locking sleeve 6 is loosened, the ball 11 in the ball sliding groove 14 falls along with the locking ring 10, is pushed to the limiting groove 15 by the inclined surface of the locking ring 10, and finally the locking ring 10 is returned, the ball 11 is limited between the limiting groove 15 and the ball sliding groove 14, the movable pipe 4 is locked again, the elastic force of the compression spring 9 locks the position of the locking sleeve 6, thereby effectively preventing the ball 11 from being taken out of the limiting groove 15, and the position of the movable pipe 4 is locked again.

[0026] Please refer to Figures 4-5 , the lower end of the first movable pipe 41 is a straight pipe structure, the lower end of the second movable pipe 42 is a bent pipe structure, and the bending curvature of the bent pipe is the curvature of the fastest curve. The movable pipe 4 comprises the first movable pipe 41 and the second movable pipe 42, the knocking ball can be adjusted according to different processes, the process distance and speed of the straight pipe and the bent pipe are different, so the knocking force is also changed, and different lengths of the first movable pipe 41 and the second movable pipe 42 can be selected according to different requirements to meet the requirements of different knocking strokes.

Claims

1. A knocking device for a rotary kiln, characterized in that, The application relates to a rotary kiln (1) and a knocking device (3) installed on the rotary kiln (1), wherein the knocking device (3) comprises a movable tube (4), a fixed tube (5) and a sliding locking structure; the fixed tube (5) is fixedly connected with the rotary kiln (1); the movable tube (4) is detachably connected with the fixed tube (5) through the sliding locking structure; a plurality of freely movable knocking balls (12) are arranged in the movable tube (4); when the rotary kiln (1) rotates, the knocking balls (12) in the movable tube (4) fall into the fixed tube (5) and knock the surface of the rotary kiln (1).

2. The rapping device for a rotary kiln according to claim 1, characterized in that, The sliding locking structure comprises a locking sleeve (6), a first limiting ring (7) and a second limiting ring (8); one end of the locking sleeve (6) is located between the first limiting ring (7) and the second limiting ring (8); a plurality of ball sliding grooves (14) are arranged at the other end of the locking sleeve (6), and sliding balls (11) are arranged in the locking sleeve (6); a limiting groove (15) matched with the sliding balls (11) is arranged at the upper end of the movable tube (4); a locking ring (10) for pushing the sliding balls (11) into the limiting groove (15) is further arranged at the end of the locking sleeve (6) close to the ball sliding grooves (14); a compression spring is arranged between the second limiting ring (8) and the locking ring (10).

3. The rapping device for a rotary kiln according to claim 2, characterized in that The first limiting ring (7) and the second limiting ring (8) are fixedly installed at the end of the fixed tube (5); and the locking ring (10) is fixedly connected with the locking sleeve (6).

4. The rapping device for a rotary kiln according to claim 2, characterized in that, The cross section of the locking ring (10) is a right trapezoid, and the inclined surface of the locking ring (10) faces the sliding balls (11).

5. The rapping device for a rotary kiln according to claim 2, characterized in that, The end of the limiting groove (15) close to the fixed tube (5) is inclined to the fixed tube (5).

6. The rapping device for a rotary kiln according to claim 2, characterized in that, The diameter of the end of the ball sliding groove (14) away from the movable tube (4) is smaller than the diameter of the sliding ball (11).

7. The rapping device for a rotary kiln according to claim 2, characterized in that, The movable tube (4) is a first movable tube (41) with a straight tube structure at the lower end or a second movable tube (42) with an elbow structure at the lower end, wherein the curved arc of the elbow structure is a tangent curve arc.

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