High-temperature calcining furnace

Abstract

The utility model discloses a high-temperature calcining furnace, which relates to the technical field of calcining furnaces, and comprises a furnace body, a connecting cover fixedly connected to the upper surface of the furnace body, a feed port arranged on the upper surface of the connecting cover, a connecting ring fixedly connected to the upper surface of the furnace body, and a group of supports fixedly connected to the upper surface of the connecting ring, a motor is arranged above the furnace body, an inner furnace is rotationally connected into the furnace body through two circular rings fixed on the inner furnace, and at the moment, the inner furnace drives a spiral pipe in the inner furnace to rotate together in the rotating process, so that materials are continuously rolled and stirred in the spiral pipe; meanwhile, the spiral shape of the spiral pipe also promotes the materials to move and turn over in order in the pipe, the materials can make contact with a heating source in all directions, the situation of local overheating or insufficient heating is avoided, and in addition, the materials are continuously turned over in the spiral pipe and the inner furnace rotates, so that the materials are effectively prevented from being accumulated and agglomerated in the furnace.

Description

TECHNICAL FIELD

[0001] The utility model relates to calcining furnace technical field, especially a kind of high-temperature calcining furnace. BACKGROUND

[0002] In the industrial production field, calcining furnace is a kind of extremely important equipment, is widely used in metallurgy, chemical industry, building material and many other industries, in aluminum industry, alumina ash treatment is crucial, traditional rotary kiln calcining alumina ash but there are many malpractices, its combustion is difficult to control, extremely easy to cake, thereby causing furnace blast, kiln phenomenon.

[0003] In traditional calcining furnace technology, it usually contains following several key parts:

[0004] 1, furnace body: as the shell of calcining furnace, generally by high-temperature-resistant metal material or refractory material is built.

[0005] 2, heating system: common heating mode has fuel heating and electric heating.

[0006] 3, temperature control system: mainly by temperature sensor, controller and actuator are constituted.

[0007] 4, inlet and outlet device: feeding device is different according to the form and characteristics of material, for example, for powder material, screw feeder is mostly used, blocky material can use conveying belt or push rod type feeding device etc.

[0008] At present, in order to improve the performance and production efficiency of calcining furnace, many manufacturers are also constantly exploring and trying new technology and design, some manufacturers optimize heating system, adopt more advanced burner technology, such as premix burner, to improve the combustion efficiency of fuel, reduce energy consumption;There are manufacturers in temperature control system introduce intelligent algorithm, enhance the precision and response speed of temperature control, in material processing, some manufacturers design special in-furnace structure, such as installing scoop in furnace inner wall, to improve the heating uniformity of material in furnace.

[0009] However, the existing calcination furnace technology still has some deficiencies, in terms of material heating uniformity, although some improvement measures are taken, but for some special materials or processes with extremely high calcination uniformity requirements, it is still difficult to fully meet the needs, and local calcination of materials is prone to excessive or insufficient, thereby affecting product quality, in terms of heat utilization efficiency, although the heating system is optimized, but in the heat transfer process, there is still a certain degree of heat loss and insufficient utilization, resulting in energy waste, in addition, it is easy to appear the phenomenon of caking, increase the production cost, in view of these problems, the application provides an innovative solution, the spiral pipe structure is designed in the calcination furnace, and the calcination furnace can rotate, through the unique design, the defects of the existing calcination furnace in material heating uniformity, heat utilization efficiency and material processing efficiency are effectively solved, and the overall performance and product quality of the calcination furnace are significantly improved. Content of the utility model

[0010] In view of the deficiencies of the prior art, the utility model provides a high temperature calcination furnace, solve the existing calcination furnace in material heating uniformity, although some improvement measures are taken, but for some special materials or processes with extremely high calcination uniformity requirements, it is still difficult to fully meet the needs, and local calcination of materials is prone to excessive or insufficient.

[0011] In order to realize above-mentioned purpose, the utility model realizes through following technical scheme:

[0012] A high temperature calcination furnace, including the furnace body, the connecting cover is fixedly connected on the upper surface of the furnace body, the connecting cover upper surface is provided with the feed inlet, this high temperature calcination furnace still includes: the connecting ring is fixedly connected on the upper surface of the furnace body, a group of supports are fixedly connected on the upper surface of the connecting ring, the motor is arranged above the furnace body, the inner furnace is rotatably connected in the furnace body, the spiral pipe is fixedly connected in the inner furnace, the spiral pipe annular side surface movably sheathed with the heat preservation sleeve, the spiral pipe upper end is fixedly connected with the fixed ring, the fixed ring is movably sheathed with the feed inlet, the fixed disc is fixedly connected between a group of supports, and the fixed disc is fixedly connected with the motor.

[0013] Preferably, the connecting cover upper surface is fixedly connected with the connecting rod, the connecting rod is fixedly connected with the motor output shaft, the spiral pipe annular side surface is fixedly connected with two fixed rods, and the two fixed rods are fixedly connected with the inner furnace.

[0014] Preferably, two annular grooves are formed in the inner wall of the furnace body, two annular rings are fixedly connected on the annular side surface of the inner furnace, two annular rings are rotatably connected with two annular grooves respectively, and the spiral pipe lower end is fixedly connected with the discharge port.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1、Spiral pipe as a whole is spiral design can make the material along its path slowly, increase the contact time and contact area of material and fuel, fuel in the spiral pipe, the high temperature generated directly heating pipe material, this way can improve the heat transfer efficiency, make the material heated more evenly, at the same time, spiral pipe outside is provided with heat preservation sleeve, can reduce the heat loss, further improve the energy utilization.

[0017] 2、The inner furnace is rotatably connected in the furnace body through the two annular rings fixed thereon, at this time, the inner furnace rotates to drive the spiral pipe in it to rotate together, so that the material in the spiral pipe is constantly rolling and stirring, and the spiral shape of the spiral pipe also promotes the material to move and turn in order in the pipe, so that the material can contact the heating source in all directions, avoiding the situation of local overheating or insufficient heating, in addition, the constant rolling of the material in the spiral pipe and the rotation of the inner furnace effectively prevent the material from accumulating and caking in the furnace. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following is the preferred embodiment of the present application and the detailed description of the drawings.

[0019] Figure 1 It is the overall structure diagram of the present application;

[0020] Figure 2 It is the furnace body structure diagram of the present application;

[0021] Figure 3 It is the spiral pipe structure diagram of the present application;

[0022] Figure 4 It is the inner furnace structure diagram of the present application.

[0023] Legend: 1, furnace body; 2, connecting ring; 3, feed inlet; 4, support; 5, connecting rod; 6, motor; 7, fixed disc; 8, inner furnace; 9, connecting cover; 10, heat preservation sleeve; 11, spiral pipe; 12, fixed rod; 13, fixed ring; 14, discharge port; 15, annular ring; 16, annular groove. DETAILED DESCRIPTION

[0024] The embodiment of the application provides a high-temperature calcining furnace, effectively solves the problem of material heating uniformity of the existing calcining furnace, and improves the overall performance and product quality of the calcining furnace.

[0025] Embodiment 1

[0026] The technical scheme in the embodiment of the application effectively solves the problem of material heating uniformity of the existing calcining furnace, and improves the overall performance and product quality of the calcining furnace.

[0027] In view of the problems in the prior art, the utility model provides a kind of high-temperature calcining furnace, including furnace body 1, furnace body 1 upper surface is fixedly connected with connecting cover 9, connecting cover 9 upper surface is provided with feed inlet 3, this one kind of high-temperature calcining furnace further includes: furnace body 1 upper surface is fixedly connected with connecting ring 2, connecting ring 2 upper surface is fixedly connected with a group of supports 4, furnace body 1 upper portion is provided with motor 6, furnace body 1 is rotatably connected with inner furnace 8, inner furnace 8 is fixedly connected with spiral pipe 11 in, spiral pipe 11 annular side surface is movably sleeved with heat preservation sleeve 10, spiral pipe 11 upper end is fixedly connected with fixed ring 13, fixed ring 13 is movably sleeved with feed inlet 3, a group of supports 4 are fixedly connected with fixed disc 7, fixed disc 7 is fixedly connected with motor 6, in use process, by opening feed inlet 3, pour material and fuel in it, material and fuel will fall into spiral pipe 11 and flow, spiral pipe 11 is spirally designed and can make material slowly move along its path, increase the contact time and contact area of material and fuel, fuel burns in spiral pipe 11, and the high temperature generated directly heats the material in pipe, which can improve heat transfer efficiency and make material heat more evenly.

[0028] Connecting cover 9 upper surface is fixedly connected with connecting rod 5, connecting rod 5 is fixedly connected with motor 6 output shaft, spiral pipe 11 annular side surface is fixedly connected with two fixed rods 12, two fixed rods 12 are fixedly connected with inner furnace 8, meanwhile, spiral pipe 11 is provided with heat preservation sleeve 10 outside, can reduce heat loss, further improve energy utilization, in calcining process, by starting motor 6, its output shaft will drive fixedly connected connecting rod 5 to rotate, connecting rod 5 will drive fixedly connected connecting cover 9 to rotate in rotating process, connecting cover 9 is fixedly connected with inner furnace 8 and drives it to rotate.

[0029] Two annular grooves 16 are formed in the inner wall of the furnace body 1, and two circular rings 15 are fixedly connected to the annular side of the inner furnace 8. The two circular rings 15 are rotatably connected to the two annular grooves 16, respectively. The lower end of the spiral pipe 11 is fixedly connected to the discharge port 14. The inner furnace 8 is rotatably connected to the furnace body 1 through the two circular rings 15 fixedly connected thereto. At this time, the inner furnace 8 will drive the spiral pipe 11 in it to rotate during rotation, so that the material in the spiral pipe 11 is constantly tumbled and stirred. At the same time, the spiral shape of the spiral pipe 11 also promotes the orderly movement and overturning of the material in the pipe, so that the material can be in contact with the heating source in all directions, avoiding the situation of local overheating or insufficient heating. In addition, the constant stirring of the material in the spiral pipe 11 and the rotation of the inner furnace 8 effectively prevent the material from accumulating and caking in the furnace.

[0030] Working principle:

[0031] In use, the material and fuel are poured into the spiral pipe 11 through the opening of the feeding port 3. The spiral pipe 11 is designed as a whole spiral, which can make the material move slowly along its path, increase the contact time and contact area of the material and fuel, and the fuel burns in the spiral pipe 11, generating high temperature to directly heat the material in the pipe. This way can improve the heat transfer efficiency and make the material heated more evenly. At the same time, the spiral pipe 11 is provided with a heat preservation sleeve 10 outside, which can reduce heat loss and further improve energy utilization. During calcination, the motor 6 is started, and its output shaft drives the connecting rod 5 fixedly connected thereto to rotate. The connecting rod 5 drives the fixed connecting cover 9 to rotate during rotation. The connecting cover 9 is fixedly connected with the inner furnace 8 and drives it to rotate together. The inner furnace 8 is rotatably connected to the furnace body 1 through the two circular rings 15 fixedly connected thereto. At this time, the inner furnace 8 will drive the spiral pipe 11 in it to rotate during rotation, so that the material in the spiral pipe 11 is constantly tumbled and stirred. At the same time, the spiral shape of the spiral pipe 11 also promotes the orderly movement and overturning of the material in the pipe, so that the material can be in contact with the heating source in all directions, avoiding the situation of local overheating or insufficient heating. In addition, the constant stirring of the material in the spiral pipe 11 and the rotation of the inner furnace 8 effectively prevent the material from accumulating and caking in the furnace.

[0032] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A high-temperature calcining furnace, comprising a furnace body (1), wherein a connecting cover (9) is fixedly connected to the upper surface of the furnace body (1), and a feed inlet (3) is provided on the upper surface of the connecting cover (9), characterized in that, The high-temperature calcining furnace further includes: a connecting ring (2) fixedly connected to the upper surface of the furnace body (1), a set of brackets (4) fixedly connected to the upper surface of the connecting ring (2), a motor (6) provided above the furnace body (1), and an inner furnace (8) rotatably connected inside the furnace body (1); The inner furnace (8) is fixedly connected to a spiral tube (11), and the spiral tube (11) is movably sleeved with a heat insulation sleeve (10) on its annular side. The upper end of the spiral tube (11) is fixedly connected to a fixing ring (13), and the fixing ring (13) is movably sleeved with the feed inlet (3).

2. The high-temperature calcining furnace as described in claim 1, characterized in that: A fixed plate (7) is fixedly connected between a group of the brackets (4); The fixed disk (7) is fixedly connected to the motor (6).

3. The high-temperature calcining furnace as described in claim 1, characterized in that: A connecting rod (5) is fixedly connected to the upper surface of the connecting cover (9); The connecting rod (5) is fixedly connected to the output shaft of the motor (6).

4. The high-temperature calcining furnace as described in claim 1, characterized in that: The spiral tube (11) has two fixed rods (12) fixedly connected to its annular side; Both of the fixing rods (12) are fixedly connected to the inner furnace (8).

5. A high-temperature calcining furnace as described in claim 1, characterized in that: The inner wall of the furnace body (1) has two annular grooves (16), and the annular side of the inner furnace (8) is fixedly connected to two circular rings (15); The two rings (15) are rotatably connected to the two annular grooves (16).

6. A high-temperature calcining furnace as described in claim 1, characterized in that: The lower end of the spiral tube (11) is fixedly connected to the discharge port (14).

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