Continuous feeding device of calcium aluminate calcining kiln
Through the design of the crushing wheel and the guide plate, the problem of calcining kiln blockage caused by the difference in material particle size is solved, and the continuous feeding and reliable calcination of calcium aluminate are achieved.
Patent Information
- Application Number
- CN202422476159.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-12
AI Technical Summary
In the prior art, when the particle size of the material is large, blockage is easily caused in the feed pipeline of the calcining kiln, affecting the calcining efficiency of calcium aluminate.
A pair of crushing wheels are used to crush and refine the material, and the design of the guide plate and cloth plate ensures that the material enters the discharge pipe evenly and prevents blockage.
Continuous feeding of materials is achieved, blockage is avoided, and reliable calcination of calcium aluminate is ensured.
Smart Images
Figure CN223243315U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of calcium aluminate production equipment, and in particular to a continuous feeding device for a calcium aluminate calcining kiln. Background Art
[0002] Calcium aluminates are a series of inorganic compounds formed by sintering calcium oxide and aluminum oxide at high temperatures. Due to their high hardness and melting point, they are widely used in cement, fire extinguishing materials, and steelmaking desulfurization agents. In recent years, China has gradually tightened its mining of primary mineral resources such as bauxite. Utilizing the aluminum resources contained in aluminum ash and preparing calcium aluminate from aluminum ash and calcium carbonate could significantly reduce primary bauxite mining. Furthermore, this could reduce aluminum ash emissions and transform it into products, offering significant economic and environmental benefits. Currently, the preparation of calcium aluminate from aluminum ash has become a research hotspot.
[0003] In the existing related technology, a feed pipe is provided at one end of the calcining kiln. The material is transported into the feed pipe through a conveyor belt, and then transported to the calcining kiln for calcination through the feed pipe. However, when the particle size of the material varies greatly, the material can easily become blocked in the feed pipe, resulting in material breakage and affecting the calcination efficiency of calcium aluminate. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the present application provides a continuous feeding device for a calcium aluminate calcining kiln.
[0005] The present application is implemented by the following technical solution: a continuous feeding device for a calcium aluminate calcining kiln is arranged on the outside of the calcining kiln body, comprising a shell and a discharge pipe, the top of the shell is provided with an opening, the discharge pipe is provided at the bottom of the shell and is connected to the calcining kiln body, a pair of crushing wheels are provided on the upper inner side of the shell, a feeding gap is provided between the pair of crushing wheels, and the outer sides of the crushing wheels are close to the inner wall of the shell;
[0006] A material guide plate is provided at the opening and above the crushing wheel, a feed port is provided on the top of the material guide plate, the feed port is located above the feed gap, the top of the material guide plate is funnel-shaped, and the feed port is located on the low side of the material guide plate.
[0007] Optionally, the pair of crushing wheels rotate toward the feed gap under the drive of the motor, the bottom of the shell is provided with a material guide slope, the material guide slope is inclined, and the discharge pipe is located at the bottom of the material guide slope.
[0008] Optionally, a collecting pipe is provided below the crushing wheel, and a distribution plate is provided below the collecting pipe. The collecting pipe is a hollow tube, and the distribution plate is an umbrella shape. The collecting pipe is used to gather the crushed materials, and the distribution plate is used to evenly distribute the materials.
[0009] Optionally, the collecting pipe is fixed on the inner side of the shell by a bracket, a fixing rod is provided below the bracket, the distribution plate is passed through the fixing rod, the top of the distribution plate is located on the inner side of the collecting pipe, and the bottom of the distribution plate is located below the collecting pipe.
[0010] Optionally, the maximum outer diameter of the distribution plate is greater than the inner diameter of the collecting pipe, the minimum outer diameter of the distribution plate is smaller than the inner diameter of the collecting pipe, and there is a material cutting gap between the bottom of the distribution plate and the inner wall of the shell.
[0011] Optionally, a hydraulic cylinder is provided on the fixed rod, a connecting piece is provided on the inner wall of the cloth plate, a push rod of the hydraulic cylinder is connected to the connecting piece, and the hydraulic cylinder drives the connecting piece and the cloth plate to move axially along the fixed rod.
[0012] Compared with the existing technology, the present application realizes the crushing and refining of the material through the rotation of a pair of crushing wheels, and then realizes the uniform distribution of the material through an umbrella-shaped distribution plate that can move back and forth, ensuring that the material can smoothly enter the calcining kiln body through the discharge pipe without breakage due to blockage, thereby improving the continuity of the feeding operation and ensuring that calcium aluminate can be reliably calcined. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of this application;
[0014] Figure 2 This is a reference diagram of the shell in a top view;
[0015] In the figure: 1. calcining kiln body; 2. shell; 21. discharge pipe; 22. opening; 23. guide slope; 3. crushing wheel; 30. feed gap; 4. guide plate; 40. feed port; 5. collecting pipe; 50. bracket; 6. distribution plate; 61. fixing rod; 62. discharge gap; 63. hydraulic cylinder; 64. connecting parts. DETAILED DESCRIPTION
[0016] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0017] like Figure 1-2As shown, the continuous feeding device of the calcium aluminate calcining kiln is arranged on the outside of the calcining kiln body 1, including a shell 2 and a discharge pipe 21. The top of the shell 2 is provided with an opening 22, and the discharge pipe 21 is provided at the bottom of the shell 2 and is connected to the calcining kiln body 1. A pair of crushing wheels 3 are provided on the upper inner side of the shell 2, and a feed gap 30 is provided between the pair of crushing wheels 3. The outer sides of the crushing wheels 3 are close to the inner wall of the shell 2; a guide plate 4 is provided at the opening 22 and above the crushing wheels 3, and a feed port 40 is provided on the top of the guide plate 4. The feed port 40 is located above the feed gap 30, and the top of the guide plate 4 is funnel-shaped, and the feed port 40 is located on the low side of the guide plate 4. When the material is put into the shell 2 through the opening 22, it will be guided by the guide plate 4 and gathered at the feed port 40, and then fall downward through the feed port 40. Since the feed port 40 is located above the feed gap 30, the material can all enter the feed gap 30 after passing through the feed port 40, so that all the material can be moved between the pair of crushing wheels 3. In this way, the pair of crushing wheels 3 can quickly crush the material, realize the refinement of the material and the particle size of the refined material can be in a relatively uniform state, thereby effectively preventing the bridging phenomenon of materials with different particle sizes after entering the shell 2, ensuring that the material can smoothly enter the discharge pipe 21 and enter the calcining kiln body 1 through the discharge pipe 21, thereby improving the continuity of the feed and facilitating the reliable calcination of calcium aluminate.
[0018] Driven by a motor, the pair of crushing wheels 3 rotate toward the feed gap 30. A slanted guide ramp 23 is provided at the bottom of the housing 2, with the discharge pipe 21 located at the bottom of the guide ramp 23. In other words, the crushing wheels 3 move in opposite directions, ensuring they can reliably crush the material within the feed gap 30. The guide ramp 23 ensures that, after crushing and refining the material and dropping it to the bottom of the housing 2, it does not accumulate there. Instead, guided by the guide ramp 23, it slides entirely into the discharge pipe 21 and ultimately enters the kiln body 1.
[0019] Below the crushing wheel 3 is a collection pipe 5, below which is a distribution plate 6. The collection pipe 5 is hollow and tubular, while the distribution plate 6 is umbrella-shaped. The collection pipe 5 collects the crushed material, while the distribution plate 6 evenly distributes it. After crushing and refinement, the material falls into the collection pipe 5 below the feed gap 30. This collection of the material prevents it from being dispersed by irregular airflow within the housing 2. The material will fall into the top of the distribution plate 6 after passing through the collecting pipe 5. Since the distribution plate 6 is umbrella-shaped, the material will slide from the top of the distribution plate 6 to the bottom of the distribution plate 6, thereby achieving uniform dispersion of the material and avoiding the material from falling into the discharge pipe 21 in a concentrated manner and causing blockage of the discharge pipe 21. That is to say, under the action of the collecting pipe 5 and the distribution plate 6, the material can enter the discharge pipe 21 evenly and orderly, and then move to the calcining kiln body 1 through the discharge pipe 21, thereby achieving continuous feeding to the calcining kiln body 1.
[0020] The collection pipe 5 is fixed inside the housing 2 by a bracket 50. A fixing rod 61 is located below the bracket 50, and a distribution plate 6 is mounted on the fixing rod 61. The top of the distribution plate 6 is located inside the collection pipe 5, and the bottom of the distribution plate 6 is located below the collection pipe 5. The collection pipe 5 is fixed by the bracket 50, ensuring that all crushed and refined materials fall into the collection pipe 5. The distribution plate 6 is movable by the fixing rod 61, sliding on the fixing rod 61, thereby reliably and evenly distributing the material and preventing material blockage in the discharge pipe 21.
[0021] The maximum outer diameter of the distribution plate 6 is greater than the inner diameter of the collection pipe 5, while the minimum outer diameter of the distribution plate 6 is smaller than the inner diameter of the collection pipe 5. A material discharge gap 62 is provided between the bottom of the distribution plate 6 and the inner wall of the housing 2. Reasonable setting of the dimensions of the distribution plate 6 ensures that the top of the distribution plate 6 is always located inside the collection pipe 5, while the bottom of the distribution plate 6 is always located below the collection pipe 5. After being dispersed by the distribution plate 6, the material in the collection pipe 5 can fall downward through the discharge gap and, guided by the guide slope 23, enter the discharge pipe 21 from the top outer edge, thereby ensuring that the material will not become blocked in the discharge pipe 21.
[0022] A hydraulic cylinder 63 is mounted on the fixed rod 61, and a connector 64 is mounted on the inner wall of the material distribution plate 6. The push rod of the hydraulic cylinder 63 is connected to the connector 64, and the hydraulic cylinder 63 drives the connector 64 and the material distribution plate 6 to move axially along the fixed rod 61. Under the connection of the connector 64, when the push rod of the hydraulic cylinder 63 is extended or retracted, the material distribution plate 6 can slide on the fixed rod 61, thereby changing the point at which the material lands on the top of the material distribution plate 6 and the size of the discharge gap. In other words, after the material slides off the material distribution plate 6, it can fall from different positions in the discharge gap and in different amounts, thus preventing the material from clogging in the discharge pipe 21 to the greatest extent.
[0023] The above-mentioned embodiments are only preferred embodiments of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by technicians in this field based on the present application shall fall within the scope of protection required by the present application.
Claims
1. A continuous feeding device for a calcium aluminate calcining kiln, characterized in that: The calcining kiln is arranged on the outside of the calcining kiln body (1), and comprises a shell (2) and a discharge pipe (21); the top of the shell (2) is provided with an opening (22); the discharge pipe (21) is provided at the bottom of the shell (2) and is communicated with the calcining kiln body (1); a pair of crushing wheels (3) are provided on the upper inner side of the shell (2); a feeding gap (30) is provided between the pair of crushing wheels (3); and the outer sides of the crushing wheels (3) are close to the inner wall of the shell (2); A guide plate (4) is provided at the opening (22) and above the crushing wheel (3); a feed port (40) is provided at the top of the guide plate (4); the feed port (40) is located above the feed gap (30); the top of the guide plate (4) is funnel-shaped; and the feed port (40) is located on the lower side of the guide plate (4).
2. The continuous feeding device for calcium aluminate calcining kiln according to claim 1, characterized in that: The pair of crushing wheels (3) are driven by a motor to rotate toward the feed gap (30). A material guide slope (23) is provided at the bottom of the housing (2). The material guide slope (23) is inclined, and the discharge pipe (21) is located at the bottom of the material guide slope (23).
3. The continuous feeding device for calcium aluminate calcining kiln according to claim 1, characterized in that: A collecting pipe (5) is provided below the crushing wheel (3), and a distribution plate (6) is provided below the collecting pipe (5). The collecting pipe (5) is in the shape of a hollow tube, and the distribution plate (6) is in the shape of an umbrella. The collecting pipe (5) is used to gather crushed materials, and the distribution plate (6) is used to evenly distribute the materials.
4. The continuous feeding device for calcium aluminate calcining kiln according to claim 3, characterized in that: The collecting pipe (5) is fixedly arranged on the inner side of the shell (2) through a bracket (50), a fixing rod (61) is provided below the bracket (50), the distribution plate (6) is passed through the fixing rod (61), the top of the distribution plate (6) is located on the inner side of the collecting pipe (5), and the bottom of the distribution plate (6) is located below the collecting pipe (5).
5. The continuous feeding device for calcium aluminate calcining kiln according to claim 4, characterized in that: The maximum outer diameter of the distribution plate (6) is greater than the inner diameter of the collecting pipe (5), the minimum outer diameter of the distribution plate (6) is smaller than the inner diameter of the collecting pipe (5), and a material removal gap (62) exists between the bottom of the distribution plate (6) and the inner wall of the shell (2).
6. The continuous feeding device for calcium aluminate calcining kiln according to claim 4, characterized in that: A hydraulic cylinder (63) is provided on the fixed rod (61), a connecting piece (64) is provided on the inner wall of the distribution plate (6), a push rod of the hydraulic cylinder (63) is connected to the connecting piece (64), and the hydraulic cylinder (63) drives the connecting piece (64) and the distribution plate (6) to move along the axial direction of the fixed rod (61).