Protective device for kiln tail barrel of rotary kiln

Abstract

The utility model provides a protective device for a kiln tail barrel of a rotary kiln, and belongs to the technical field of rotary kiln equipment. Comprising a kiln tail barrel body used for feeding of the rotary kiln; the feeding opening is formed in the feeding end of the kiln tail barrel main body, and the feeding opening is used for feeding of the kiln tail barrel main body; the step block is in an annular stair shape, the end, with the minimum diameter, of the interior of the step block is matched with the feeding port, the end, with the maximum diameter, of the interior of the step block is matched with the inner wall of the kiln tail barrel body, and the step block is used for buffering materials step by step; and the annular inclined blocks are arranged at the two adjacent steps. Through the matching of structures such as the step block, the annular inclined block and the knocking ball, the direct impact of materials on the inner wall of the barrel body is effectively reduced, and meanwhile, through the matching of the structures such as the knocking ball, the clamping block and the rotating barrel, the materials are effectively prevented from being accumulated and adhered on the step block.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln equipment, in particular to a rotary kiln tail cylinder protection device. Background Art

[0002] As an important equipment widely used in cement, metallurgy, chemical industry and other industries, the rotary kiln plays a key role in the production process. The kiln tail cylinder, as an important component of the rotary kiln, undertakes the important tasks of material entry, preliminary processing, and coordination with other parts. With the continuous development of industrial production, the performance and reliability requirements of the rotary kiln are getting higher and higher. In order to ensure the stable operation of the rotary kiln and extend its service life, the protection of the kiln tail cylinder is particularly important.

[0003] However, in the actual application of rotary kilns, because the rotary kiln is tilted as a whole and rotates along its axis, and because the interior of the rotary kiln is in a high-temperature environment, the properties of the materials will change under the action of high temperature; for example, the strength will be reduced. Since there is usually a certain drop when the material enters the kiln tail cylinder from the feed port, and the material may contain hard particles or lumps, coupled with the influence of factors such as the feeding method, the material will cause a large impact on the inner wall of the cylinder during feeding. Long-term impact will lead to increased wear of the inner wall of the cylinder, and even local deformation, cracks and other damage, affecting the normal operation of the rotary kiln. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a rotary kiln tail cylinder protection device to solve the technical problem that when the material is fed, the drop, characteristics and feeding method have a great impact on the inner wall of the cylinder, resulting in wear, deformation and even cracks on the inner wall, affecting the operation of the rotary kiln, and at the same time avoiding the accumulation of materials on the stepped blocks.

[0005] Technical solution: To achieve the above purpose, the present invention is implemented through the following technical solutions: a rotary kiln tail cylinder protection device, comprising: a kiln tail cylinder body, used for rotary kiln feeding; a feed port, opened at the feed end of the kiln tail cylinder body, the feed port is used for feeding the kiln tail cylinder body; a step block, in the shape of an annular staircase, the smallest diameter end of the step block is adapted to the feed port, and the largest diameter end is adapted to the inner wall of the kiln tail cylinder body, the step block is used for step-by-step buffering of materials; an annular oblique block, set at two adjacent steps, the top of the annular oblique block is adjacent to the feed port. The upper plane of the step at the end is flush, and the lower plane is flush with the upper plane of the other step. The annular oblique block is used to assist in buffering the impact of materials. The material of the main body of the kiln tail cylinder should have high temperature resistance, wear resistance and other properties to adapt to the harsh environment inside the rotary kiln; the shape of the feed port can be circular or rectangular, etc., which is determined according to actual production needs; the step height and width of the step block should be reasonably designed according to the characteristics of the material and the feeding speed to achieve the best buffering effect; the angle and size of the annular oblique block should match the step block to ensure a smooth transition of the material.

[0006] In a further embodiment, the groove is provided in the step block and is annular in shape, wherein the depth and width of the groove should be reasonably designed according to actual needs and should not be too deep or too shallow.

[0007] In a further embodiment, there are at least two connecting blocks, which are stably connected in the groove; the connecting shaft is stably connected between the two connecting blocks, wherein the material of the connecting block should have sufficient strength and wear resistance to withstand various forces during the operation of the device; the connection method between the connecting block and the groove should be firm and reliable, and can be connected by welding, bolts, etc.; the diameter and length of the connecting shaft should be reasonably designed according to actual needs to ensure that it can withstand the weight and impact force of the rotating drum and the knocking ball.

[0008] In a further embodiment, the rotating drum is rotatably connected to the connecting shaft, the horizontal center line of the rotating drum coincides with the horizontal center line of the connecting shaft, and the rotating shaft is adapted to the connecting shaft; at least one connecting rod is provided, and one end of the connecting rod is stably connected to the rotating drum; at least one knocking ball is provided, and the knocking ball is stably connected to the other end of the connecting rod, and the knocking ball is used to knock the step blocks, wherein the material of the rotating drum should have light weight and good wear resistance to reduce rotational resistance; the number and length of the connecting rods should be reasonably designed according to the size of the rotating drum and the position of the knocking balls to ensure that the knocking balls can effectively knock the step blocks; the material of the knocking balls should have a certain weight and hardness to generate sufficient impact force.

[0009] In a further embodiment, there is at least one clamping block, and the clamping block is slidably connected to the connecting block, and the clamping block is used to fix the rotating drum; the spring is stably installed in the connecting block, and the spring is used to reset the clamping block, wherein the number and size of the clamping blocks should be reasonably designed according to the size and weight of the rotating drum to ensure that the rotating drum can be effectively fixed; the elastic coefficient of the spring should be moderate, which can provide sufficient reset force without making the clamping block have too much fixing force on the rotating drum.

[0010] In a further embodiment, a slot adapted to the block is provided on the rotating drum, and the slot is used to provide a fixed position for the block, wherein the size and shape of the slot should completely match the block to ensure the stability of the fixation; the position of the slot should be reasonably designed according to the rotation angle of the rotating drum and the movement trajectory of the knocking ball.

[0011] In a further embodiment, the length of the connecting rod is greater than the depth of the groove, wherein the length of the connecting rod should be reasonably designed according to the depth of the groove and the size of the rotating drum, so as to ensure that the knocking ball can knock effectively, but not be too long to affect the operating stability of the device.

[0012] In a further embodiment, the fixing force of the block on the rotating drum is smaller than the gravity of the knocking ball itself, and the difference between the fixing force of the block on the rotating drum and the gravity of the knocking ball should be reasonably adjusted according to actual needs to ensure that the knocking ball can knock at the right time, while not causing instability of the rotating drum due to too small fixing force.

[0013] Beneficial effects: 1. Through the coordination of structures such as stepped blocks, annular oblique blocks and knocking balls, when the material enters the kiln tail cylinder from the feed inlet, it first falls on the stepped blocks; the stepped blocks are in the shape of an annular staircase, which can buffer the material step by step, reducing the impact force of the material caused by the drop, characteristics and feeding method; the annular oblique blocks are set at two adjacent steps to further assist in buffering the impact of the material, so that the material flows more smoothly in the cylinder; it effectively reduces the direct impact of the material on the inner wall of the cylinder, reduces the risk of wear, deformation and even cracks on the inner wall of the cylinder, and extends the service life of the rotary kiln.

[0014] 2. Through the coordination of the knocking ball, the block, the drum and other structures, when the rotary kiln is running, the drum rotates together with the main body of the kiln tail drum; when the knocking ball is at the top of the main body of the kiln tail drum, since the knocking ball's own gravity is greater than the fixing force of the block on the drum, the knocking ball will overcome the fixing force of the block and move downward to knock on the step blocks; the vibration generated by this knocking can effectively prevent the accumulation and adhesion of materials on the step blocks, maintaining the fluidity of the materials; at the same time, the vibration also helps to further disperse the impact force of the materials and reduce the impact of the materials on the inner wall of the drum; thus, dynamic management of the materials is realized, and the normal operation of the rotary kiln is avoided from being affected by the accumulation of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the practical embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of the main cross-section structure.

[0018] Figure 3 for Figure 1 Schematic diagram of the side section structure.

[0019] Figure 4 for Figure 2 Schematic diagram of the structure at A.

[0020] Figure 5 for Figure 2 Schematic diagram of the structure at B.

[0021] Figure 6 for Figure 3 Schematic diagram of the structure at C.

[0022] The reference numerals in the figure are: 1. kiln tail cylinder body; 101. feed port; 2. step block; 201. groove; 202. connecting block; 203. connecting shaft; 204. rotating drum; 3. annular oblique block; 4. clamping block; 5. spring; 6. connecting rod; 7. knocking ball. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of this practical embodiment more clear, the technical solutions in this practical embodiment are clearly and completely described. Obviously, the described embodiments are part of the embodiments of this practical, not all of them. Based on the embodiments in this practical, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this practical.

[0024] This embodiment of the present application provides a rotary kiln tail drum protection device that addresses the technical issue of material feed, which, due to factors such as drop height, characteristics, and feeding methods, can significantly impact the drum's inner wall, leading to wear, deformation, and even cracks, which can affect kiln operation. It also prevents material accumulation on the stepped blocks. In actual use, this device reduces the risk of damage to the drum's inner wall, ensures stable kiln operation, and prevents material accumulation.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] Reference Figure 1-6 A rotary kiln tail cylinder protection device comprises: a kiln tail cylinder body 1 for feeding the rotary kiln; a feed port 101, which is opened at the feeding end of the kiln tail cylinder body 1, and the feed port 101 is used for feeding the kiln tail cylinder body 1; a step block 2, which is in the shape of a circular staircase, the smallest end of the inner diameter of the step block 2 is adapted to the feed port 101, and the largest end of the diameter is adapted to the inner wall of the kiln tail cylinder body 1, and the step block 2 is used for step-by-step buffering of materials; an annular oblique block 3, which is arranged at two adjacent steps, the top of the annular oblique block 3 is flush with the upper plane of the step close to the feeding end, and the lower plane is flush with the upper plane of the other step, and the annular oblique block 3 is used to assist in buffering the impact of materials.

[0027] Through the structural coordination of the kiln tail cylinder body 1, the feed port 101, the step block 2 and the annular oblique block 3, it is achieved that when the material enters the rotary kiln tail cylinder, it first passes through the feed port 101 and enters the step block 2 in the shape of an annular staircase; the smallest diameter end of the step block 2 is adapted to the feed port 101, and the largest diameter end is adapted to the inner wall of the kiln tail cylinder body 1, so that the material can be buffered step by step, reducing the impact on the inner wall of the cylinder due to the drop, characteristics and feeding method; the annular oblique block 3 is arranged at two adjacent steps to assist in buffering the impact of the material, so that the material can flow more smoothly in the cylinder, thereby reducing the risk of damage to the inner wall of the cylinder.

[0028] The groove 201 is formed in the stepped block 2 and is annular in shape.

[0029] By providing an annular groove 201 structure in the stepped block 2 , installation space is provided for components such as the connecting block 202 .

[0030] There are at least two connecting blocks 202 , and the connecting blocks 202 are stably connected in the groove 201 ; the connecting shaft 203 is stably connected between the two connecting blocks 202 .

[0031] By stably connecting at least two connecting blocks 202 in the groove 201 and connecting the connecting shaft 203 between the two connecting blocks 202, stable support is provided for the rotation of the rotating drum 204, ensuring the structural stability of the entire device.

[0032] The rotating drum 204 is rotatably connected to the connecting shaft 203, the horizontal center line of the rotating drum 204 coincides with the horizontal center line of the connecting shaft 203, and the rotating shaft is adapted to the connecting shaft 203; there is at least one connecting rod 6, and one end of the connecting rod 6 is stably connected to the rotating drum 204; there is at least one knocking ball 7, and the knocking ball 7 is stably connected to the other end of the connecting rod 6, and the knocking ball 7 is used to knock the step block 2.

[0033] The rotating drum 204 is rotatably connected to the connecting shaft 203, and the horizontal center line of the rotating drum 204 coincides with the horizontal center line of the connecting shaft 203. In addition, at least one connecting rod 6 is stably connected to the rotating drum 204 at one end and connected to the knocking ball 7 at the other end. The rotating drum 204 can drive the knocking ball 7 to rotate when the rotary kiln is running; the knocking ball 7 is used to knock the step block 2 to generate vibration, prevent material accumulation and enhance the buffering effect, thereby achieving the purpose of ensuring the stable operation of the rotary kiln and preventing material accumulation.

[0034] There is at least one clamping block 4, and the clamping block 4 is slidably connected to the connecting block 202, and the clamping block 4 is used to fix the rotating drum 204; the spring 5 is stably installed in the connecting block 202, and the spring 5 is used to reset the clamping block 4.

[0035] Through the structural cooperation of at least one block 4 slidingly connected to the connecting block 202 and the spring 5 stably installed in the connecting block 202, the block 4 is used to fix the rotating drum 204 at a specific position, and the spring 5 provides a reset force for the block 4; when the knocking ball 7 needs to knock the step block 2, it can overcome the fixing force of the block 4 and realize the automatic knocking function of the knocking ball 7.

[0036] The rotating drum 204 is provided with a slot adapted to the clamping block 4 , and the slot is used to provide a fixed position for the clamping block 4 .

[0037] By providing a slot structure on the rotating drum 204 that matches the clamping block 4, a fixed position is provided for the clamping block 4, ensuring that the rotating drum 204 can be stably fixed at a specific angle, thereby ensuring the normal operation of the device.

[0038] The length of the connecting rod 6 is greater than the depth of the groove 201 .

[0039] By making the length of the connecting rod 6 greater than the depth of the groove 201, the knocking ball 7 can smoothly knock the step block 2 during the rotation of the rotating drum 204 without being hindered by the groove 201, thereby realizing the effective knocking function of the knocking ball 7.

[0040] The fixing force of the clamping block 4 on the rotating drum 204 is smaller than the gravity of the striking ball 7 itself.

[0041] By making the fixing force of the block 4 on the drum 204 smaller than the weight of the knocking ball 7 itself by the structural design, when the knocking ball 7 reaches a specific position, it can overcome the fixing force of the block 4 and hit the step block 2 downward, generating vibration, preventing material accumulation and enhancing the buffering effect, thereby ensuring the stable operation of the rotary kiln.

[0042] During use, the material enters the kiln tail cylinder body 1 from the feed inlet 101 and first falls on the step blocks 2 in the shape of an annular staircase, which cushion the material step by step. The annular inclined blocks 3 are arranged at two adjacent steps to help cushion the impact of the material and make the material flow more smoothly. When the rotating drum 204 rotates with the kiln tail cylinder body 1, the connecting rod 6 on the rotating drum 204 drives the knocking ball 7 to rotate. When the knocking ball 7 is at the top of the kiln tail cylinder body 1, because its own gravity is greater than the fixing force of the clamping block 4 on the rotating drum 204, the knocking ball 7 overcomes the fixing force of the clamping block 4 and strikes the step blocks 2 downward, generating vibration. On the one hand, this vibration prevents the material from accumulating and adhering to the step block 2. On the other hand, it also helps to further disperse the impact force of the material and reduce the impact of the material on the inner wall of the cylinder. When the knocking ball 7 is at the bottom of the kiln tail cylinder body 1, the rotating drum 204 will be fixed by the block 4 again, waiting to be moved to the top of the kiln tail cylinder body 1 again; the block 4 is slidingly connected to the connecting block 202, and the spring 5 is installed in the connecting block 202 to provide a reset force for the block 4; the slot on the rotating drum 204 provides a fixed position for the block 4; the length of the connecting rod 6 is greater than the depth of the groove 201, ensuring that the knocking ball 7 can smoothly knock on the step block 2.

[0043] The above-mentioned required feeding mechanism, sealing mechanism, pretreatment mechanism and cooling device structures all belong to the existing technology and are non-essential technical features in this application, so they are not described or drawn in the documents and drawings of this application.

[0044] In summary, compared with the existing technology, the present invention has the following beneficial effects: through the annular staircase design of the step blocks and the assistance of the annular inclined blocks, the materials are buffered step by step, which greatly reduces the impact of the materials on the inner wall of the cylinder due to the drop, characteristics and feeding method, reduces the risk of wear, deformation and even cracks on the inner wall of the cylinder, and extends the service life of the rotary kiln; secondly, the cooperation of the knocking ball, the card block, the rotating drum and other structures, when the knocking ball is at the top of the main body of the kiln tail cylinder, it can overcome the fixing force of the card block to knock the step block, generate vibration, effectively prevent the accumulation and adhesion of the material on the step block, maintain the fluidity of the material, ensure the stable operation of the rotary kiln, and improve production efficiency and product quality.

[0045] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. While specific details are described in detail in the preferred embodiments of this invention to provide a thorough understanding, those skilled in the art will be able to fully understand this invention without these details. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A rotary kiln tail cylinder protection device, characterized in that: include: The main body of the kiln tail cylinder (1) is used for feeding the rotary kiln; A feed port (101) is provided at the feed end of the kiln tail cylinder body (1), and the feed port (101) is used for feeding the kiln tail cylinder body (1); The step block (2) is in the shape of a circular staircase, the smallest diameter end of the step block (2) is adapted to the feed port (101), and the largest diameter end is adapted to the inner wall of the kiln tail cylinder body (1), and the step block (2) is used for step-by-step buffering of materials; An annular inclined block (3) is provided at two adjacent steps, the top of the annular inclined block (3) is flush with the upper plane of the step close to the feed end, and the lower plane is in flush contact with the upper plane of the other step. The annular inclined block (3) is used to assist in buffering the impact of materials.

2. A rotary kiln tail cylinder protection device according to claim 1, characterized in that: Also includes: The groove (201) is formed in the stepped block (2), and the groove (201) is annular.

3. A rotary kiln tail cylinder protection device according to claim 2, characterized in that: Also includes: At least two connecting blocks (202) are provided, and the connecting blocks (202) are stably connected in the groove (201); The connecting shaft (203) is stably connected between the two connecting blocks (202).

4. A rotary kiln tail cylinder protection device according to claim 3, characterized in that: Also includes: A rotating drum (204) is rotatably connected to the connecting shaft (203), wherein the horizontal center line of the rotating drum (204) coincides with the horizontal center line of the connecting shaft (203), and the rotating shaft is adapted to the connecting shaft (203); At least one connecting rod (6) is provided, and one end of the connecting rod (6) is stably connected to the rotating drum (204); There is at least one knocking ball (7), and the knocking ball (7) is stably connected to the other end of the connecting rod (6). The knocking ball (7) is used to knock the step block (2).

5. A rotary kiln tail cylinder protection device according to claim 4, characterized in that: Also includes: There is at least one clamping block (4), and the clamping block (4) is slidably connected to the connecting block (202), and the clamping block (4) is used to fix the rotating drum (204); A spring (5) is stably installed in the connecting block (202), and the spring (5) is used to reset the clamping block (4).

6. The rotary kiln tail cylinder protection device according to claim 5, characterized in that: A slot adapted to the clamping block (4) is provided on the rotating drum (204), and the slot is used to provide a fixed position for the clamping block (4).

7. The rotary kiln tail cylinder protection device according to claim 4, characterized in that: The length of the connecting rod (6) is greater than the depth of the groove (201).

8. The rotary kiln tail tube protection device according to claim 5, characterized in that: The fixing force of the clamping block (4) on the rotating drum (204) is smaller than the gravity of the striking ball (7) itself.

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