Suspended flash-burning heating device

Abstract

A heating device for suspension flash burning comprises a furnace body and a hot air assembly arranged in the furnace body, a rotating rod rotating in the axial direction of a feeding hopper is arranged in the feeding hopper on the furnace body, a power assembly driving the rotating rod to rotate is arranged on the feeding hopper, and the lower end of the rotating rod extends into the furnace body. The spiral blade is arranged in the feeding hopper, the rotating rod drives the spiral blade to rotate to feed materials into the furnace body, the materials can be prevented from being blocked in the feeding hopper, meanwhile, the vibrating screen is arranged on the upper portion of the furnace body, caked lime powder in the materials is filtered through the vibrating screen, and the L-shaped pull rod matched with the lower end of the rotating rod in a transmission mode is arranged on the vibrating screen. The rotating rod rotates to drive the vibrating screen to ascend in a reciprocating mode, after ascending, the vibrating screen is matched with vibration of the spring at the bottom, powdery limestone caked on the vibrating screen can be vibrated open, and therefore the powdery limestone can be burnt thoroughly easily, the calcination quality of lime powder is improved, the falling lime powder can be dispersed through vibration of the vibrating screen, and the lime powder is further heated evenly.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium oxide production, in particular to a suspended flash-burning heating device. Background Art

[0002] Calcium oxide is a commonly used raw material in building materials, which is produced by calcining limestone. In the process of processing, limestone is usually made into lime powder, and then the lime powder is preheated and sent to the suspension calcining furnace for suspension flash burning. After the lime powder is put into the calcining furnace, the hot air component in the calcining furnace begins to transport high-temperature hot air and form a vortex in the calcining furnace. The lime powder is suspended in the calcining furnace due to the vortex. The high-temperature hot air contacts the lime powder with a small gap and calcines it. After the lime powder is burned in the suspension stage, calcium oxide can be formed.

[0003] Before entering the calcining furnace, the lime powder will accumulate in the feed hopper of the calcining furnace waiting for feeding. The internal temperature of the feed hopper is very high due to the temperature of the calcining furnace. If some of the lime powder is not fully preheated during preheating, it will be preheated again in the feed hopper due to the rapid increase in temperature. The moisture in the preheated lime powder will evaporate rapidly and form agglomerates. The agglomerated lime powder can easily block the discharge port of the feed hopper. At the same time, the agglomerates are not easy to burn through after entering the calcining furnace, which can easily reduce the product quality. Utility Model Content

[0004] The purpose of the utility model is to provide a suspended flash heating device, which can heat materials more evenly and improve the production quality of products.

[0005] In order to solve the deficiencies of the above-mentioned technical problems, the utility model adopts the following technical solutions: a suspended flash heating device, comprising a furnace body and a hot air component arranged in the furnace body, a rotating rod rotating along its axial direction is provided in the feed hopper on the furnace body, a power component driving the rotating rod to rotate is provided on the feed hopper, the lower end of the rotating rod extends into the interior of the furnace body, a spiral blade is sleeved on the rod body of the rotating rod located at the discharge port of the feed hopper, the outer side of the spiral blade is in contact with a small gap on the inner side of the small diameter end of the feed hopper; a vibrating screen is provided at the upper end of the interior of the furnace body, a plurality of fixed blocks are provided on the inner wall of the furnace body, and the plurality of fixed blocks are connected to the bottom of the vibrating screen through springs; a rotating column is sleeved on one end of the rotating rod extending into the interior of the furnace body, an upwardly inclined transmission block is provided on the circumferential side of the rotating column, an L-shaped pull rod is provided on the vibrating screen, and the horizontal portion of the L-shaped pull rod is located on the rotation path of the middle portion of the transmission block.

[0006] As a further optimization of the suspended flash heating device of the utility model, a sealing cover is provided at the feed port of the feed hopper, and the feed hopper is connected to an external feeding pipe.

[0007] As a further optimization of the suspended flash heating device of the utility model, the power component is a motor, the motor is fixed to the upper end surface of the sealing cover, and the upper end of the rotating rod passes through the sealing cover and is drivingly connected to the output shaft of the motor.

[0008] As a further optimization of the suspended flash heating device of the utility model, the rotating column is a hollow structure.

[0009] As a further optimization of the suspended flash heating device of the utility model, the upper end surface of the rotating column is conical.

[0010] As a further optimization of the suspended flash heating device of the utility model, the vibrating screen is composed of a mesh frame and a screen fixed in the mesh frame, a reinforcement rod is provided between the opposite sides of the mesh frame, and the vertical part of the L-shaped pull rod is fixed on the reinforcement rod.

[0011] As a further optimization of the suspended flash heating device of the utility model, the outer side of the feed hopper is connected to the furnace body through a plurality of fixing rods.

[0012] As a further optimization of the suspended flash heating device of the utility model, friction particles for increasing the friction coefficient are evenly distributed on the spiral blades.

[0013] The utility model has the following beneficial effects:

[0014] First, the utility model arranges spiral blades in the feed hopper, and feeds the material into the furnace body by rotating the spiral blades through the rotating rod, so as to avoid the material from being blocked in the feed hopper. Meanwhile, a vibrating screen is arranged on the upper part of the furnace body, and the lime powder agglomerated in the material is filtered through the vibrating screen. The vibrating screen is provided with an L-shaped pull rod which cooperates with the lower end of the rotating rod for transmission. The rotating rod can drive the vibrating screen to rise reciprocatingly, and after rising, the vibrating screen can be vibrated with the spring at the bottom to shake off the agglomerated powdered limestone on the vibrating screen, so that it is easy to burn through and improve the calcination quality of the lime powder. Secondly, the vibration of the vibrating screen can disperse the falling lime powder, and further make the lime powder heated evenly.

[0015] Second, in the present invention, the rotation of the spiral blades and the vibration of the vibrating screen are both realized by a set of power systems, thereby achieving the purpose of streamlining the power structure and improving the utilization of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The partial cross-sectional structure diagram of the heating device of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The partial cross-sectional structure diagram of the heating device of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3It is a structural schematic diagram of the heating device of the utility model;

[0019] Figure numerals: 1. furnace body, 2. L-shaped pull rod, 3. fixing rod, 4. feed hopper, 5. sealing cover, 6. motor, 7. rotating rod, 8. rotating column, 9. transmission block, 10. spring, 11. fixing block, 12. reinforcement rod, 13. vibrating screen, 1301, screen, 1302, mesh frame, 14. spiral blade, 15. external feeding pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] like Figure 1-3 As shown, the utility model provides a suspended flash heating device for improving the production quality of calcium oxide. The utility model heating device is the same as the existing device in that it includes a furnace body 1 and a hot air component arranged in the furnace body 1. The furnace body 1 is provided with a feed hopper 4 for feeding and a discharge port for discharging. The outer side of the feed hopper 4 is connected to the furnace body 1 through a plurality of fixing rods 3. The material enters the furnace body 1 through the feed hopper 4. The hot air component in the furnace body 1 transports high-temperature hot air and forms a vortex in the calcining furnace. The lime powder is suspended in the calcining furnace due to the vortex. The high-temperature hot air contacts the lime powder and calcines it. The lime powder can form calcium oxide after being burned in the suspension stage. It needs to be explained here that the structure and use principle of the hot air component and the structure inside the furnace body 1 are all prior art.

[0022] The heating device of the utility model is different from the existing device in that a rotating rod 7 rotating along its axial direction is provided in the feed hopper 4 on the furnace body 1, and a power assembly driving the rotating rod 7 to rotate is provided on the feed hopper 4. The lower end of the rotating rod 7 extends to the inside of the furnace body 1. The rotating rod 7 located at the feeding port of the feed hopper 4 is sleeved with a spiral blade 14, and the outer side of the spiral blade 14 is in small gap contact with the inner side of the small diameter end of the feed hopper 4. By arranging the spiral blade 14 in the feed hopper 4, when the rotating rod 7 rotates, it can rotate with the spiral blade 14, so that the material in the feed hopper 4 can be transported to the inside of the furnace body 1 through the rotation of the spiral blade 14, and the material can be prevented from being blocked in the feed hopper 4. The small gap contact here means that the outer side of the spiral blade 14 is in contact with the inner side of the small diameter end of the feed hopper 4, but no severe friction occurs. Friction particles for increasing the friction coefficient are evenly distributed on the spiral blade 14. It is used to make the material stay on the spiral blade 14 due to friction, and not easily slide into the furnace body 1 through the gap between the spiral blade 14 and the feed hopper 4, so that it can enter the furnace body 1 through the rotation of the spiral blade 14.

[0023] In this embodiment, a sealing cover 5 is provided at the feed port of the feed hopper 4, and the feed hopper 4 is connected to an external feed pipe 15. The power assembly is a motor 6, which is fixed to the upper end surface of the sealing cover 5, and the upper end of the rotating rod 7 passes through the sealing cover 5 and is in driving connection with the output shaft of the motor 6.

[0024] In the utility model, a vibrating screen 13 is provided at the upper end of the furnace body 1, and a plurality of fixed blocks 11 are provided on the inner wall of the furnace body 1, and the plurality of fixed blocks 11 are connected to the bottom of the vibrating screen 13 through springs 10; the vibrating screen 13 can screen the material falling from the feed hopper 4, and filter the lime powder agglomerated in the material through the vibrating screen 13. The fixed blocks 11 and the springs 10 fix the position of the vibrating screen 13, and the springs 10 can enable the vibrating screen 13 to move up and down.

[0025] In order to process the agglomerated lime powder screened out, a rotating column 8 is sleeved on one end of the rotating rod 7 extending into the furnace body 1, and a transmission block 9 tilted upward is arranged on the circumference of the rotating column 8. An L-shaped tie rod 2 is arranged on the vibrating screen 13, and the horizontal part of the L-shaped tie rod 2 is located on the rotation path of the middle part of the transmission block 9. When the rotating rod 7 rotates, the transmission block 9 rotates with it. Because the L-shaped tie rod 2 cannot rotate but can move upward, when the transmission block 9 contacts the horizontal part of the L-shaped tie rod 2 during the rotation process, it will rise against the horizontal part of the L-shaped tie rod 2. When the upper end of the transmission block 9 passes through the horizontal part of the L-shaped tie rod 2, the horizontal part of the L-shaped tie rod 2 falls off from the transmission block 9 and moves downward. With the vibration of the spring 10 at the bottom, the agglomerated powdered limestone on the vibrating screen 13 can be shaken off, so that it is easy to burn through and improve the calcination quality of the lime powder. Secondly, the vibration of the vibrating screen 13 can disperse the falling lime powder, so that the lime powder is evenly discharged, and further the lime powder is evenly heated.

[0026] In this embodiment, the rotating column 8 is a hollow structure in order to reduce the rotation load of the rotating rod 7. At the same time, in order to prevent the upper end surface of the rotating column 8 from accumulating materials, the upper end surface of the rotating column 8 is set to be conical.

[0027] The vibrating screen 13 in this embodiment is composed of a mesh frame 1302 and a screen 1301 fixed in the mesh frame 1302 . A reinforcing rod 12 is provided between two opposite sides of the mesh frame 1302 , and the vertical portion of the L-shaped pull rod 2 is fixed on the reinforcing rod 12 .

[0028] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various modifications or variations within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A suspended flash heating device, comprising a furnace body (1) and a hot air component arranged in the furnace body (1), characterized in that: A rotating rod (7) is provided in the feed hopper (4) on the furnace body (1) and rotates along its axial direction. A power assembly for driving the rotating rod (7) to rotate is provided on the feed hopper (4). The lower end of the rotating rod (7) extends into the interior of the furnace body (1). A spiral blade (14) is sleeved on the rod body of the rotating rod (7) located at the feed outlet of the feed hopper (4). The outer side of the spiral blade (14) is in contact with the inner side of the small diameter end of the feed hopper (4) with a small gap. A vibrating screen is provided at the upper end of the interior of the furnace body (1). (13), a plurality of fixed blocks (11) are arranged on the inner wall of the furnace body (1), and the plurality of fixed blocks (11) are connected to the bottom of the vibration screen (13) through springs (10); a rotating rod (7) is extended to one end of the furnace body (1) and is sleeved with a rotating column (8), and an upwardly inclined transmission block (9) is arranged on the circumference of the rotating column (8); an L-shaped pull rod (2) is arranged on the vibration screen (13), and the horizontal part of the L-shaped pull rod (2) is located on the rotation path in the middle of the transmission block (9).

2. A suspended flash heating device according to claim 1, characterized in that: A sealing cover (5) is provided at the feed port of the feed hopper (4), and the feed hopper (4) is connected to an external feeding pipe (15).

3. A suspended flash heating device according to claim 2, characterized in that: The power assembly is a motor (6), which is fixed to the upper end surface of the sealing cover (5), and the upper end of the rotating rod (7) passes through the sealing cover (5) and is drivingly connected to the output shaft of the motor (6).

4. A suspended flash heating device according to claim 1, characterized in that: The rotating column (8) is a hollow structure.

5. A suspended flash heating device according to claim 1, characterized in that: The upper end surface of the rotating column (8) is conical.

6. A suspended flash heating device according to claim 1, characterized in that: The vibrating screen (13) is composed of a mesh frame (1302) and a screen (1301) fixed in the mesh frame (1302). A reinforcing rod (12) is provided between two opposite sides of the mesh frame (1302), and the vertical portion of the L-shaped pull rod (2) is fixed on the reinforcing rod (12).

7. A suspended flash heating device according to claim 1, characterized in that: The outer side of the feed hopper (4) is connected to the furnace body (1) via a plurality of fixing rods (3).

8. The suspended flash heating device according to claim 1, characterized in that: Friction particles for increasing the friction coefficient are evenly distributed on the spiral blade (14).

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