A bottom air flow distribution device capable of blowing piled materials and a method for using the same

Abstract

The present invention discloses a bottom air flow distribution device capable of blowing piled materials and a using method thereof, including a furnace body, a feed inlet and a slag discharge port. A hollow cavity is provided inside the furnace body. A plurality of tuyeres are evenly distributed at the top of the hollow cavity. A vertical partition plate is provided inside the hollow cavity to divide it into a left chamber, a middle chamber and a right chamber. Platforms are fixedly connected to both sides inside the furnace body. Compression springs are fixedly connected to the platforms. The two ends of the bottom of the hollow cavity are fixedly connected to the compression springs. The bottom of the hollow cavity is hinged with a first flap and a second flap that are symmetric about the center of the hollow cavity. Connecting shafts extending outside the furnace body are provided at the bottom edges of the first flap and the second flap. A driving mechanism for driving the connecting shafts to swing is installed on the outer wall of the furnace body. Air inlets are provided on the side walls of the furnace body below the first flap and the second flap. The beneficial effect of the present invention is that the hollow cavity swings left and right periodically, which is convenient for blowing the piled materials.

Description

Technical Field

[0001] The present invention relates to the technical field of the bottom air flow distribution device of a roasting furnace in a pyrite acid-making system, and particularly relates to a bottom air flow distribution device capable of blowing piled materials and a using method thereof. Background Art

[0002] In a pyrite acid-making system, when feeding materials into a roasting furnace, due to the throwing force of a throwing machine and the action of its own gravity, the ore materials fall onto the area near the throwing port. When the ore materials contain more particles or have a higher water content, etc., it is difficult for the ore materials to be evenly blown by the bottom air and form boiling, which easily causes accumulation or being pressed dead. Generally, the air flow distribution of a roasting furnace is to divide the front and rear air chambers and supply air to the furnace bed. When ore material accumulation occurs, it is very difficult to blow the piled materials by adjusting the air supply volume in this air supply method, resulting in poor blowing effect.

[0003] The Chinese Utility Model Patent Authorization Publication No. CN209655803U discloses a discharging device of a fluidized bed roasting furnace, including a roasting furnace body. A wind distribution plate is arranged at the bottom of the roasting furnace body, and wind caps are arranged on the wind distribution plate. The roasting furnace body is connected with a discharging pipe, and the discharging pipe is located above the wind caps. A discharging valve is arranged on the discharging pipe; two pressure sensors are further arranged on the roasting furnace body, the wind caps are located between the two pressure sensors, and the roasting furnace body is provided with a control system, and the control system is respectively connected with the discharging valve and the two pressure sensors. However, the control system has a complex structure and poor robustness, and cannot solve the problem of blowing piled materials either.

[0004] The Chinese Invention Patent Authorization Publication No. CN102021317B discloses an oxidation roasting process for blending high-fluorine and high-chlorine zinc oxide miscellaneous materials. The upper part of a furnace body (13) is provided with a furnace top (10), a furnace gas outlet (9) is arranged on one side of the furnace top, a cooling water coil (3) is installed in the furnace body, an operation door (4) is arranged on the furnace body at the position of the water inlet, a front chamber (2) is arranged on one side of the lower part of the furnace body, a feeding pipe (1) is arranged at the upper part of the front chamber, a cleaning port (11) is arranged at the front part of the front chamber of the furnace body, a wind cap (12) is arranged between the front chamber of the furnace body and a discharging port (5), a wind distribution main pipe (7) is arranged below the wind cap, air inlet pipes (6) are connected to both ends of the wind distribution main pipe, the wind distribution main pipe and the air inlet pipes are placed in an air box (8) below the wind cap (12), a front chamber air box (14) is arranged at the lower part of the front chamber of the furnace body, front chamber wind caps are arranged at the upper part of the lower plane of the front chamber, and the front chamber air box below it is communicated with the air inlet pipe. When ore material accumulation occurs, the blowing effect is poor. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing roasting furnace cannot blow ore materials when the ore materials are accumulated, resulting in the accumulation or being pressed dead of the ore materials. Therefore, a bottom air flow distribution device capable of blowing piled materials and a using method thereof are provided.

[0006] The technical solution of the present invention is as follows: A bottom air flow distribution device capable of blowing piled materials, including a furnace body, a feed inlet located on one side of the top of the furnace body, and a slag discharge port located on the side of the furnace body away from the feed inlet. A hollow cavity matching the inner cross-section of the furnace body and located below the slag discharge port is provided inside the furnace body. A number of air caps are evenly distributed on the top of the hollow cavity. An opening communicating with the air caps is provided at the bottom of the hollow cavity. A first vertical partition and a second vertical partition are provided inside the hollow cavity to divide it into a left chamber, a middle chamber, and a right chamber. Platforms are fixedly connected to both sides inside the furnace body. Compression springs are fixedly connected to the platforms. The two ends of the bottom of the hollow cavity are fixedly connected to the compression springs. The bottom of the hollow cavity is hinged with a first flap and a second flap that are symmetric about the center of the hollow cavity. Connecting shafts extending outside the furnace body are provided at the bottom edges of the first flap and the second flap. A driving mechanism for driving the connecting shafts to swing is installed on the outer wall of the furnace body. An arc-shaped groove for providing a swinging space for the connecting shafts is provided on the outer wall of the furnace body. Air inlets are provided on the side walls of the furnace body below the first flap and the second flap.

[0007] An improvement to the above solution is that the two ends of the hollow cavity are provided with curled edges that fit against the inner walls on both sides of the furnace body.

[0008] In the above solution, the driving mechanism includes a rotary motor, and the rotary motor drives the connecting shafts to swing in the arc-shaped grooves through connecting rods.

[0009] In the above solution, the bottom of the furnace body is conical.

[0010] In the above solution, the connecting shafts are in clearance fit with the arc-shaped grooves.

[0011] In the above solution, the first flap and the second flap are made of elastic materials.

[0012] A method for using a bottom air flow distribution device capable of blowing piled materials includes the following steps: Ore materials enter the top of the hollow cavity inside the furnace body from the feed inlet. The driving mechanism is started, and the first flap and the second flap are driven to rotate through the connecting shafts. The first flap and the second flap divide the furnace body space into a lower left chamber, a middle lower chamber, and a lower right chamber. The rotation of the first flap and the second flap changes the space sizes of the lower left chamber, the middle lower chamber, and the lower right chamber, thereby improving the air flow sizes entering the left chamber, the middle chamber, and the right chamber, causing the hollow cavity to swing periodically, driving the ore materials at the top of the hollow cavity to creep periodically, blowing the piled materials, and finally discharging them from the slag discharge port.

[0013] The beneficial effect of the present invention is to change the air supply volume of the left chamber, the middle chamber and the right chamber by rotating the first flap and the second flap, thereby changing the attitude of the hollow cavity, making it swing left and right periodically, promoting the separation of the ore on the hollow cavity from the hollow cavity, and eliminating the problem that the accumulated material is difficult to blow when the ore contains more particles or has a higher water content. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the bottom air flow distribution device of the present invention that can blow the accumulated material;

[0015] Figure 2 is Figure 1 a schematic diagram of the hollow cavity in the middle;

[0016] Figure 3 is a schematic diagram of a working state of the bottom air flow distribution device of the present invention;

[0017] Figure 4 is a schematic diagram of another working state of the bottom air flow distribution device of the present invention;

[0018] Figure 5 is a schematic diagram of another working state of the bottom air flow distribution device of the present invention;

[0019] Figure 6 is Figure 1 a schematic diagram of the cooperation between the driving mechanism and the connecting shaft in the middle;

[0020] In the figure, 1, furnace body; 2, feed inlet; 3, slag discharge port; 4, hollow cavity; 41, left chamber; 42, middle chamber; 43, right chamber; 44, first vertical partition; 45, second vertical partition; 5, air cap; 6, platform; 7, compression spring; 8, first flap; 9, second flap; 10, driving mechanism; 11, arc groove; 12, air inlet. EMBODIMENTS

[0021] The following combines examples to clearly and completely describe the technical solutions in the present invention. Obviously, the described examples are only a part of the examples of the present invention, rather than all the examples. Based on the examples in the present invention, all other examples obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0022] Such as Figure 1 , Figure 2 , Figure 6As shown in the figure, a bottom airflow distribution device capable of blowing piled materials includes a furnace body 1, a feed inlet 2 located on one side of the top of the furnace body, and a slag discharge port 3 located on the side of the furnace body far from the feed inlet. A hollow cavity 4 matching the inner cross-section of the furnace body and located below the slag discharge port is provided inside the furnace body. A plurality of tuyeres 5 are evenly distributed on the top of the hollow cavity. An opening communicating with the tuyeres is provided at the bottom of the hollow cavity. The incoming air enters the hollow cavity from the opening and then is discharged from the tuyeres to blow the ore materials. A first vertical partition 44 and a second vertical partition 45 that divide the inside of the hollow cavity into a left chamber 41, a middle chamber 42, and a right chamber 43 are provided inside the hollow cavity. Platforms 6 are fixedly connected to both sides inside the furnace body. Compression springs 7 are fixedly connected to the platforms. The two ends of the bottom of the hollow cavity are fixedly connected to the compression springs. The compression springs can not only relieve the impact force generated by the hollow cavity being impacted by the ore materials but also increase the restoring force to pull the hollow cavity back to the horizontal posture. The bottom of the hollow cavity is hinged with a first flap 8 and a second flap 9 that are centrosymmetric about the center of the hollow cavity. The bottom edges of the first flap and the second flap extend outward with connecting shafts extending outside the furnace body. A driving mechanism 10 for driving the connecting shafts to swing is installed on the outer wall of the furnace body. An arc-shaped groove 11 for providing a swinging space for the connecting shafts is provided on the outer wall of the furnace body. Air inlets 12 are provided on the side walls of the furnace body below the first flap and the second flap.

[0023] The usage method is as follows: As shown in Figure 1 , 3 -5, it includes the following steps: The ore materials enter the top of the hollow cavity inside the furnace body from the feed inlet. The driving mechanism is started, and the first flap and the second flap are driven to rotate through the connecting shafts. The first flap and the second flap divide the furnace body space into a lower left chamber, a lower middle chamber, and a lower right chamber. In the initial state, as shown in Figure 1 , the first flap and the second flap are distributed in an inverted V shape, and the hollow cavity maintains a horizontal posture. The rotation of the first flap and the second flap changes the space sizes of the lower left chamber, the lower middle chamber, and the lower right chamber. As shown in Figure 3 , the second flap is rotated. At this time, the second flap rotates to contact the inner wall of the furnace body, so that the space of the lower right chamber is closed. The air blown in from the air inlet cannot enter the lower right chamber and can only enter the lower left chamber and the lower middle chamber, and finally enter the left chamber and the middle chamber, thereby lifting the left side of the hollow cavity. Then the first flap is rotated. As shown in Figure 4 , it is made to contact the inner wall of the furnace body to close the lower left chamber. The air entering from the air inlet cannot enter the lower left chamber and can only enter the lower middle chamber, making the hollow cavity return to the horizontal posture. Then the second flap is rotated to move away from the inner wall of the furnace body. The lower middle chamber and the lower right chamber are opened. The air blown in from the air inlet enters the lower middle chamber and the lower right chamber, thereby lifting the right side of the hollow cavity. Finally, it returns to the Figure 1 posture, and so on in a cycle, driving the ore materials at the top of the hollow cavity to perform periodic peristalsis, blowing the piled materials and finally discharging them from the slag discharge port.

[0024] As a preferred example of the present invention, the two ends of the hollow cavity are provided with inwardly curled edges, and the curled edges are attached to the inner walls on both sides of the furnace body. In this way, when the hollow cavity swings left and right, the friction between the curled edges and the furnace wall is small.

[0025] The driving mechanism of the present invention includes a rotating motor, and the rotating motor drives a connecting shaft to swing in an arc-shaped groove through a connecting rod.

[0026] As a preferred example of the present invention, the connecting shaft and the arc-shaped groove are in clearance fit, so as to give an activity space when the hollow cavity swings left and right, and conversely, also restrict the swinging amplitude of the hollow cavity to be small.

[0027] As a preferred example of the present invention, the first flap and the second flap are made of an elastic material. Since the first flap and the second flap collide with the furnace wall periodically, the elastic material can extend the service life of the first flap and the second flap.

Claims

1. A bottom air flow distribution device capable of blowing piled materials, comprising a furnace body (1), a feed inlet (2) located on one side of the top of the furnace body, and a slag discharge port (3) located on the side of the furnace body away from the feed inlet, characterized in that: A hollow cavity (4) that matches the inner cross-section of the furnace body and is located below the slag discharge port is provided inside the furnace body. A number of tuyeres (5) are evenly distributed at the top of the hollow cavity. An opening communicating with the tuyeres is provided at the bottom of the hollow cavity. A first vertical partition (44) and a second vertical partition (45) that divide the inside of the hollow cavity into a left chamber (41), a middle chamber (42), and a right chamber (43) are provided inside the hollow cavity. Platforms (6) are fixedly connected to both sides inside the furnace body. Compression springs (7) are fixedly connected to the platforms. The bottom ends of both ends of the hollow cavity are fixedly connected to the compression springs. A first flap (8) and a second flap (9) that are symmetric about the center of the hollow cavity are hinged to the bottom of the hollow cavity. The bottom edges of the first flap and the second flap extend outwards with connecting shafts that extend outside the furnace body. A drive mechanism (10) that drives the connecting shafts to swing is installed on the outer wall of the furnace body. An arc-shaped groove (11) that provides a swinging space for the connecting shafts is provided on the outer wall of the furnace body. Air inlets (12) are provided on the side walls of the furnace body below the first flap and the second flap.

2. The bottom air flow distribution device capable of blowing the piled materials as described in claim 1, characterized in that: Rolled edges that curl inwards are provided at both ends of the hollow cavity, and the rolled edges are attached to the inner walls on both sides of the furnace body.

3. The bottom air flow distribution device capable of blowing piled materials as described in claim 1, characterized in that: The drive mechanism includes a rotary motor, and the rotary motor drives the connecting shafts to swing in the arc-shaped groove through a connecting rod.

4. The bottom air flow distribution device capable of blowing the accumulated materials as described in claim 1, wherein: The bottom of the furnace body is conical.

5. The bottom air flow distribution device capable of blowing piled materials as described in claim 1, characterized in that: The connecting shafts and the arc-shaped grooves are in clearance fit.

6. The bottom air flow distribution device capable of blowing piled materials as described in claim 1, characterized in that: The first flap and the second flap are made of an elastic material.

7. A method for using a bottom air flow distribution device capable of blowing piled materials according to any one of claims 1-6, characterized in that: Including the following steps: The ore material enters the top of the hollow cavity inside the furnace body from the feed inlet. The drive mechanism is started, and the first flap and the second flap are driven to rotate through the connecting shafts. The first flap and the second flap divide the space of the furnace body into a lower left chamber, a lower middle chamber, and a lower right chamber. The rotation of the first flap and the second flap changes the space sizes of the lower left chamber, the lower middle chamber, and the lower right chamber, thereby improving the air flow sizes entering the left chamber, the middle chamber, and the right chamber, causing the hollow cavity to swing periodically, driving the ore material at the top of the hollow cavity to creep periodically, blowing the accumulated material, and finally discharging it from the slag discharge port.

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