Row type light calcined magnesia calcining device

Abstract

The utility model discloses a row type light calcined magnesia calcining device, and relates to the technical field of raw material processing. The device comprises a calcining bin, the upper portion of one side of the calcining bin is communicated with an exhaust pipe, the exhaust pipe is externally connected with denitration equipment, and the lower middle portion of one side of the calcining bin is communicated with a discharge hopper; the device comprises a calcining bin, a calcining plate fixedly arranged in the middle of the interior of the calcining bin and in a wave shape, the calcining plate is obliquely arranged downwards, the lower side of the calcining plate is connected with a discharging hopper, and a material stirring assembly arranged in the calcining bin and used for conveying materials from one trough of the calcining plate to the next trough of the calcining plate. According to the utility model, through the cooperation of the material conveying assembly, the material stirring assembly and the gas burner, the production process of materials from conveying, calcining to discharging is realized, the continuous operation mode avoids time waste caused by shutdown, the production process is uninterrupted, the production efficiency of light calcined magnesia is greatly improved, and the large-scale production requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to raw material processing equipment technical field, concretely relates to a row formula light calcined magnesium calcining device. BACKGROUND

[0002] The use of magnesium oxide is very extensive, mainly used for refractory materials. At present, the development and utilization of magnesium ore in China is mainly used for the production and manufacturing of various refractory bricks. The raw material production process is relatively backward. The traditional furnace uses coal as fuel, and the black smoke emission is very large. A large amount of dust containing MgO and smoke containing SO2 are generated in the process of magnesia production, which not only pollutes the atmospheric environment, but also makes the whole ecological environment decline. The closed calcining furnace production process combined with advanced calcining process basically does not contain sulfur in the generated flue gas, and the main pollutants are particulate matter and nitrogen oxides in the flue gas. Through the treatment of dust removal device and denitration device, the flue gas can be purified and discharged into the atmosphere, reducing the pollution to the environment.

[0003] The traditional row formula light calcined magnesium calcining device generally puts a certain amount of raw materials into the furnace body, and then discharges the finished product outward through the discharge port after calcination. Since the size of the furnace body is fixed, it directly limits the amount of raw materials that can be processed at a time. When facing large-scale production demand, the limited furnace space cannot accommodate enough raw materials, making it difficult to realize large-scale processing. In addition, the production operation cannot be continuous when loading and unloading materials, and the temperature in the furnace will decrease during the loading and unloading period. When starting production again, it needs to be re-heated to the calcination temperature. This process wastes a lot of energy and time, greatly reduces the overall production efficiency, and increases the production cost. Therefore, we propose a row formula light calcined magnesium calcining device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses in order to realize the above-mentioned purpose specifically adopts the following technical scheme:

[0005] A row formula light calcined magnesium calcining device, comprising:

[0006] The calcining bin is communicated with the exhaust pipe on one side of the upper portion, and the exhaust pipe is connected with the denitration device outside; the calcining bin is communicated with the discharge hopper on one side of the lower portion;

[0007] The calcining plate is fixedly arranged in the middle of the interior of the calcining bin, and the calcining plate is in a wave shape; the calcining plate is arranged in an inclined downward manner, and the lower side of the calcining plate is connected with the discharge hopper;

[0008] The material pushing assembly is arranged in the interior of the calcining bin, and is used for conveying the material from one wave trough of the calcining plate to the next wave trough;

[0009] The gas burner is arranged directly below each wave trough of the calcining plate;

[0010] A material conveying assembly is arranged above one side of the calcining chamber, and is used for conveying raw materials to the calcining plate.

[0011] Further, the material stirring assembly comprises rotating rods which are rotatably connected between the inner side walls of the calcining chamber, the number of the rotating rods is three, and the rotating rods are arranged in a triangular shape, a material stirring plate is fixed to one side of the rotating rods in the interior of the calcining chamber, and a driving member is arranged on the outer wall of the calcining chamber and used for driving the rotating rods to rotate.

[0012] Further, one side of the material stirring plate, which is away from the rotating rods, is in an arc shape and is slidably connected with the wave trough of the calcining plate.

[0013] Further, the driving member comprises a H-shaped plate which is arranged on the outer side wall of the calcining chamber, a driving motor is arranged on the top of the H-shaped plate, the output shaft of the driving motor is connected with one of the rotating rods, chain wheels are fixed to one end of the rotating rods which are located outside the calcining chamber, and a chain is drivingly connected between the three chain wheels.

[0014] Further, the material conveying assembly comprises an injection cylinder which is communicated above the side wall of the calcining chamber, a rotating motor is arranged on the end of the injection cylinder which is away from the calcining chamber, an installation rod is connected with the output shaft of the rotating motor and penetrates the cylinder wall of the injection cylinder, the surface of the installation rod is provided with auger blades, a feeding hopper is communicated above the side of the injection cylinder which is away from the calcining chamber, and a discharging valve is arranged at the joint between the feeding hopper and the injection cylinder.

[0015] Further, an installation plate is fixed to the interior of the calcining chamber and below the calcining plate, the installation plate is in a stepped shape, and the gas burner is arranged in the middle of each step of the installation plate.

[0016] Further, a ventilation fence is arranged between the calcining plate and the installation plate on the side wall of the calcining chamber.

[0017] The beneficial effects of the present application are as follows:

[0018] Through the cooperation of the material conveying assembly, the material stirring assembly and the gas burner, the production process of material conveying, calcining and discharging is realized, the continuous operation mode avoids the time waste caused by shutdown, the production process is uninterrupted, the production efficiency of the light-burned magnesium oxide is greatly improved, the large-scale production demand is met, and in addition, the frequent shutdown and restart are not needed, and the energy consumption caused by the temperature drop and the re-heating in the furnace is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0020] Figure 2Is another three-dimensional structure schematic view of the utility model;

[0021] Figure 3 Is the utility model overhead schematic view;

[0022] Figure 4 Is the utility model Figure 3 A-A direction cross section schematic view.

[0023] Reference signs: 1, calcination bin;101, exhaust pipe;102, discharge hopper;103, ventilation fence;2, calcination plate;3, poking assembly;301, rotating rod;302, poking plate;4, driving part;401, Chinese character-shaped plate;402, driving motor;403, chain wheel;404, chain;5, gas burner;6, material conveying assembly;601, injection cylinder;602, rotary motor;603, mounting rod;604, auger blade;605, feed hopper;7, mounting plate. DETAILED DESCRIPTION

[0024] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model.

[0025] The application provides a kind of calcination device of light-burned magnesium oxide in row, mainly for solving the prior art is generally by a certain amount of raw materials into furnace body, after calcination, then by discharge port to the outside and export finished product, due to the fixed size of furnace body, directly limit the amount of raw materials that can be handled single time, when facing large-scale production demand, limited furnace space cannot accommodate enough raw materials, it is difficult to realize scale processing, in addition, material loading and unloading needs to stop, so that production operation cannot continue, during the period of stop loading and unloading material, furnace temperature will drop, when starting production again, it needs to be re-heated to calcination temperature, this process wastes a lot of energy and time, greatly reduces the overall production efficiency problem, and provides the following technical scheme, which will be described in detail below Figures 1-4

[0026] A kind of calcination device of light-burned magnesium oxide in row, comprising:

[0027] Calcination bin 1, one side upper portion of calcination bin 1 is connected with exhaust pipe 101, exhaust pipe 101 is connected with desorption equipment, one side middle lower portion of calcination bin 1 is connected with discharge hopper 102;

[0028] Calcination plate 2, is fixedly arranged in the middle of calcination bin 1, calcination plate 2 is in wave shape, calcination plate 2 is arranged in inclined downward, and the lower side thereof is connected with discharge hopper 102;

[0029] ​The poking assembly 3 is arranged in the calcination bin 1 and is used for conveying the material from one wave trough of the calcination plate 2 to the next wave trough, the poking assembly 3 comprises rotating rods 301 which are rotatably connected between the inner side walls of the calcination bin 1, the number of the rotating rods 301 is three and the rotating rods 301 are arranged in a triangular shape, the rotating rods 301 are fixedly arranged with poking plates 302 on one side in the calcination bin 1, and the outer wall of the calcination bin 1 is provided with a driving member 4 which is used for driving the rotating rods 301 to rotate;

[0030] The gas burner 5 is arranged directly below each wave trough of the calcination plate 2.

[0031] The material conveying assembly 6 is arranged above one side of the calcination bin 1 and is used for conveying the raw material to the calcination plate 2.

[0032] The working process is as follows:

[0033] The raw material is continuously fed: the material conveying assembly 6 is started, and the raw material is continuously pushed to the calcination plate 2 in the calcination bin 1;

[0034] The calcination is promoted: the driving motor 402 in the driving member 4 is operated, the three rotating rods 301 are driven to rotate through the chain 404, the poking plates 302 on the rotating rods 301 are rotated, the poking plates 302 push the material in one wave trough of the calcination plate 2 to the next wave trough, the continuous transfer and promotion of the material on the calcination plate 2 are realized, at the same time, the gas burner 5 is continuously burned directly below each wave trough of the calcination plate 2, and the material is calcined;

[0035] The finished product is discharged: the calcined material is moved along the inclined and downward wave-shaped calcination plate 2 under the pushing of the poking assembly 3, finally falls into the discharge hopper 102 connected therewith, and is continuously discharged outward through the discharge hopper 102, and the flue gas generated in the calcination bin 1 is discharged after being treated by the denitration equipment connected by the exhaust pipe 101.

[0036] The production process of the material from conveying, calcination to discharging is realized through the cooperation of the material conveying assembly 6, the poking assembly 3 and the gas burner 5, the continuous operation mode avoids the time waste caused by shutdown, the production process is uninterrupted, the production efficiency of the light-burned magnesium oxide is greatly improved, the large-scale production demand is met, in addition, the frequent shutdown and restart are not needed, and the energy consumption caused by the temperature drop and re-heating in the furnace is reduced.

[0037] As Figure 4As shown in the drawings, in some embodiments, the stirring plate 302 is arc-shaped away from one side of the rotating rod 301, and is in sliding connection with the trough of the calcination plate 2. More specifically, the arc-shaped design makes the movement of the stirring plate 302 in the trough smoother, reducing the problem of jamming or excessive resistance caused by shape mismatch, which helps to realize the continuity and stability of the stirring action, and ensures that the materials can be smoothly transferred on the calcination plate 2 according to the predetermined trajectory.

[0038] As shown in the drawings, Figure 4 In some embodiments, the driving member 4 includes a H-shaped plate 401 installed on the outer side wall of the calcination bin 1, and the top of the H-shaped plate 401 is provided with a driving motor 402, the output shaft of the driving motor 402 is connected with one of the rotating rods 301, and each of the three rotating rods 301 is fixedly provided with a chain wheel 403 at one end outside the calcination bin 1, and the three chain wheels 403 are drivingly connected with a chain 404. More specifically, when the driving motor 402 works, it drives one of the rotating rods 301 to rotate, and then rotates through the chain 404 and the chain wheel 403, thereby realizing the simultaneous rotation of the three rotating rods 301, driving the stirring plate 302 to coordinate the action, and ensuring the uniform movement of the materials on the calcination plate 2. The driving motor 402 needs to have a speed regulation function to meet the requirements of different calcination processes on the stirring speed. For example, a variable frequency motor or a servo motor can be used to realize the speed control of the stirring plate 302 by adjusting the rotating speed, so as to adapt to the changes of the process parameters such as the amount of raw materials and the calcination temperature. The stirring frequency and amplitude of the stirring plate 302 can be realized by adjusting the rotating speed of the driving motor 402, so as to adapt to the characteristics of raw materials of different particle sizes and humidity, and optimize the calcination effect.

[0039] As shown in the drawings, Figure 4 In some embodiments, the material conveying assembly 6 includes an injection cylinder 601 communicated above the side wall of the calcination bin 1, and the end of the injection cylinder 601 away from the calcination bin 1 is provided with a rotating motor 602, the output shaft of the rotating motor 602 penetrates the cylinder wall of the injection cylinder 601 and is connected with a mounting rod 603, the surface of the mounting rod 603 is provided with an auger blade 604, and the side above the end of the injection cylinder 601 away from the calcination bin 1 is communicated with a feeding hopper 605, and the connection between the feeding hopper 605 and the injection cylinder 601 is provided with a discharge valve. More specifically, the rotating motor 602 in the material conveying assembly 6 is started, the rotating motor 602 drives the mounting rod 603 and the auger blade 604 to rotate, and the raw materials enter the injection cylinder 601 from the feeding hopper 605 through the discharge valve and are continuously pushed onto the calcination plate 2 in the calcination bin 1 under the action of the auger blade 604.

[0040] As shown in the drawings, Figure 4As shown in the drawings, in some embodiments, the inside of the calcination bin 1 is located below the calcination plate 2 and is fixed with the mounting plate 7, the mounting plate 7 is in a stepped shape, and the gas burner 5 is arranged in the middle of each layer of the mounting plate 7, and more specifically, the mounting plate 7 is in a stepped structure, each layer of the mounting plate 7 corresponds to a wave trough of the calcination plate 2, so that the gas burner 5 can be arranged in layers, and the gas burner is usually selected to be a low nitrogen oxide (NOx) emission type, which meets the environmental protection requirements, and the installation position needs to ensure that the flame center is aligned with the material in the wave trough of the calcination plate 2, and the flame coverage range matches the wave trough width.

[0041] As shown in the drawings, Figure 1 As shown in the drawings, in some embodiments, the side wall of the calcination bin 1 is arranged between the calcination plate 2 and the mounting plate 7 and is provided with a ventilation fence 103, and more specifically, the main function of the ventilation fence 103 is to provide oxygen required for combustion for the gas burner 5, and through the apertures of the fence, external air can uniformly enter the calcination bin 1, mix with the gas and fully burn after combustion, thereby improving the combustion efficiency and reducing pollutants generated by incomplete combustion.

[0042] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connected light-burning magnesium oxide calcination device, characterized in that, Include: The calcination bin (1), the exhaust pipe (101) is connected on the side of the calcination bin (1), the exhaust pipe (101) is connected with the desorption device, the discharge hopper (102) is connected on the lower side of the calcination bin (1); The calcination plate (2) is fixed in the middle of the calcination bin (1), the calcination plate (2) is wavy, the calcination plate (2) is arranged downwardly, and the lower side thereof is connected with the discharge hopper (102); The material stirring assembly (3) is arranged in the calcination bin (1), which is used for conveying material from one wave trough of the calcination plate (2) to the next wave trough; The gas burner (5) is arranged below each wave trough of the calcination plate (2); The material conveying assembly (6) is arranged on the side of the calcination bin (1), and the material conveying assembly (6) is used for conveying raw materials to the calcination plate (2).

2. A device for calcining a row of lightly calcined magnesium oxide according to claim 1, characterized in that The material stirring assembly (3) includes a rotating rod (301) rotatably connected between the inner side walls of the calcination bin (1), the number of the rotating rod (301) is three, and the rotating rod (301) is arranged in a triangular manner, the rotating rod (301) is fixed on one side in the calcination bin (1) and provided with a stirring plate (302), and the outer wall of the calcination bin (1) is provided with a driving member (4) for driving the rotating rod (301) to rotate.

3. A device for calcining a row of lightly calcined magnesium oxide according to claim 2, characterized in that The side, away from the rotating rod (301), of the stirring plate (302) is arc-shaped and slidably connected with the wave trough of the calcination plate (2).

4. A device for calcining a row of lightly calcined magnesium oxide according to claim 2, characterized in that The driving member (4) includes a H-shaped plate (401) mounted on the outer side wall of the calcination bin (1), the top of the H-shaped plate (401) is provided with a driving motor (402), the output shaft of the driving motor (402) is connected with one of the rotating rods (301), and the three rotating rods (301) are fixed with chain wheels (403) at one end outside the calcination bin (1), and the chain wheels (403) are drivingly connected with a chain (404) therebetween.

5. The device according to claim 1, wherein The material conveying assembly (6) includes an injection cylinder (601) connected on the upper side of the side wall of the calcination bin (1), the end, away from the calcination bin (1), of the injection cylinder (601) is provided with a rotating motor (602), the output shaft of the rotating motor (602) penetrates the cylinder wall of the injection cylinder (601) and is connected with a mounting rod (603), the surface of the mounting rod (603) is provided with a spiral blade (604), the upper side, away from the calcination bin (1), of the injection cylinder (601) is connected with a feeding hopper (605), and the connecting part between the feeding hopper (605) and the injection cylinder (601) is provided with a discharging valve.

6. A device for calcining a row of lightly calcined magnesium oxide according to claim 1, characterized in that The mounting plate (7) is fixed below the calcination plate (2) in the calcination bin (1), the mounting plate (7) is in a stepped shape, and the gas burner (5) is arranged in the middle of each step of the mounting plate (7).

7. A device for calcining a row of lightly calcined magnesium oxide according to claim 1, characterized in that The ventilation fence (103) is arranged between the calcination plate (2) and the mounting plate (7) on the side wall of the calcination bin (1).

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