Flue gas recovery assembly for octagonal furnace

Abstract

The flue gas recovery assembly comprises a top cover, roller shutter assemblies and a driving assembly, the top cover is of a square structure, an air suction opening is formed in the top of the top cover and connected with an air suction device, the number of the roller shutter assemblies is three, and the three roller shutter assemblies are arranged on the three sides, away from the octagonal furnace, of the top cover; the driving assembly is connected with the roller shutter assembly and used for controlling the roller shutter assembly to be unfolded and folded. According to the utility model, the roller shutter assembly is arranged and is matched with the driving assembly to control the roller shutter assembly to unfold and contract, so that during discharging, the roller shutter assembly is unfolded, the outward diffusion of smoke is limited through the roller shutter assembly, and the collection of the smoke is promoted. The roller shutter assemblies are dragged through cooperation of traction ropes and guide wheels, the driving assemblies are matched with bevel gears through transmission shafts, and synchronous control over the three roller shutter assemblies is achieved through one motor. And a counterweight strip is arranged on the roller shutter, so that the roller shutter can be unfolded smoothly and stably.

Description

Technical Field

[0001] The utility model relates to the field of steel ball heat treatment, and particularly to a flue gas recovery component for an octagonal furnace. Background Art

[0002] During the heat treatment of steel balls, a large amount of flue gas is generally generated during quenching. Especially during the heat treatment using an octagonal furnace, the steel balls slowly fall into the quenching oil tank by gravity from the furnace, and the flue gas generated during the process cannot be effectively collected. Summary of the Utility Model

[0003] Aiming at the defects existing in the above prior art, the main purpose of the utility model is to overcome the deficiencies of the prior art, and discloses a flue gas recovery component for an octagonal furnace, which includes a top cover, a rolling curtain component and a driving component. The top cover is of a square structure, and an air suction port is arranged at the top of the top cover. The air suction port is connected to an air suction device. Three groups of rolling curtain components are arranged on the top cover and on three sides away from the octagonal furnace. The driving component is connected to the rolling curtain component, and the driving component is used to control the unfolding and contraction of the rolling curtain component.

[0004] Further, the rolling curtain component includes a mounting strip, a rolling curtain and at least two towing ropes. The rolling curtain is fixed on the top cover through the mounting strip. The towing ropes support the rolling curtain, and the rolling curtain is controlled to contract and unfold by pulling the towing ropes.

[0005] Further, the towing ropes are arranged at intervals and are connected to the driving component.

[0006] Further, the towing ropes are connected to the driving component through guide wheels.

[0007] Further, the rolling curtain component further includes a counterweight strip, and the counterweight strip is installed at the lower end of the rolling curtain to increase the weight of the lower end of the rolling curtain by using the counterweight strip.

[0008] Further, the rolling curtain is a metal curtain.

[0009] Further, the driving component includes a motor, a transmission box, a first transmission shaft and a second transmission shaft. The transmission box is installed on the top cover. The first transmission shaft is connected to the transmission box. The first transmission shaft is in transmission connection with the second transmission shaft. The motor is connected to the input end of the transmission box. The motor is used to control the rotation of the first transmission shaft and the second transmission shaft to drive the movement of the rolling curtain component.

[0010] Further, the first transmission shaft and the second transmission shaft are connected by bevel gears.

[0011] Furthermore, a curtain is provided on one side of the top cover close to the octagonal furnace, and the lower end of the curtain is connected to the octagonal furnace.

[0012] Furthermore, the curtain fabric is a metal curtain.

[0013] Beneficial effects achieved by the utility model:

[0014] The utility model sets a rolling curtain assembly and cooperates with a driving assembly to control the expansion and contraction of the rolling curtain assembly. When discharging materials, the rolling curtain assembly is expanded, and smoke is restricted from diffusing outward by the rolling curtain assembly, thereby promoting smoke collection. The rolling curtain assembly is pulled by a traction rope and a guide wheel, and the driving assembly cooperates with a bevel gear through a transmission shaft, and a set of motors is used to achieve synchronous control of three sets of rolling curtain assemblies. A counterweight bar is arranged on the rolling curtain, which can make the rolling curtain smooth and stable when it is expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cooperation between a fume recovery component for an octagonal furnace and the octagonal furnace of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of a fume recovery assembly for an octagonal furnace according to the utility model;

[0017] Figure 3 for Figure 2 A magnified view of middle;

[0018] Figure 4 It is a schematic diagram of the structure of the roller blind and the curtain fabric;

[0019] The reference numerals are as follows:

[0020] 1. Top cover, 2. Rolling shutter assembly, 3. Drive assembly, 4. Curtain cloth, 9. Octagonal furnace, 11. Air inlet, 21. Mounting strip, 22. Rolling shutter, 23. Traction rope, 24. Guide wheel, 25. Counterweight bar, 31. Motor, 32. Transmission box, 33. First transmission shaft, 34. Second transmission shaft, 35. Bevel gear. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] A fume recovery assembly for an octagonal furnace, such as Figures 1 - 4As shown in the figure, it includes a top cover 1, a rolling curtain assembly 2 and a driving assembly 3. The top cover has a square structure. An air suction port 11 is provided at the top of the top cover 1, and the air suction port 11 is connected to an air suction device. Three groups of rolling curtain assemblies 2 are provided, and the three groups of rolling curtain assemblies 2 are arranged on the top cover and on three sides away from the octagonal furnace 4; the driving assembly 3 is connected to the rolling curtain assembly 2, and the driving assembly 3 is used to control the unfolding and contraction of the rolling curtain assembly 2. Before the octagonal furnace pours steel balls, the driving assembly 3 is used to control the rolling curtain assembly 2 to unfold, and the three sides of the top cover are blocked by the rolling curtain assembly 2 to reduce the diffusion of flue gas. The air suction device sucks air, so that a negative pressure is formed below the top cover 1, and then the flue gas is sucked away.

[0023] In one embodiment, as Figures 1 - 4 shown, the rolling curtain assembly 2 includes a mounting strip 21, a rolling curtain 22 and at least two towing ropes 23. The rolling curtain 22 is fixed on the top cover 1 through the mounting strip 21. The towing ropes 23 support the rolling curtain 22, and the rolling curtain 22 is controlled to contract and unfold by pulling the towing ropes 23. As shown in the figure, one end of the towing rope 23 is fixed to the mounting strip 21, and the other end is connected to the driving assembly 3 after passing around the rolling curtain 22; at the same time, the rolling curtain 22 has a spiral structure, and the driving assembly 3 is used to control the winding of the towing rope, so that the rolling curtain 22 is wound in a spiral structure. This enables the recycling component not to affect normal loading and unloading when not in use.

[0024] In the above embodiment, as Figures 1 - 4 shown, the towing ropes 23 are arranged at intervals, and the towing ropes 23 are connected to the driving assembly 3. Among them, the number of towing ropes 23 is determined according to the width of the rolling curtain 22. When the width of the rolling curtain 22 is large, three towing ropes 23 or even more can be provided.

[0025] In one embodiment, as Figures 1 - 4 shown, the rolling curtain assembly 2 further includes a guide wheel 24. The guide wheel 24 is arranged on the top cover 1, and the towing rope 23 passes through the guide wheel 24 and is connected to the driving assembly 3. The guide wheel 24 guides the smooth movement of the towing rope, and at the same time avoids the friction between the towing rope 23 and the periphery of the top cover 1, and accelerates the wear of the towing rope 23.

[0026] In one embodiment, as Figures 1 - 4 shown, the rolling curtain assembly 2 further includes a counterweight strip 25. The counterweight strip 25 is installed at the lower end of the rolling curtain 22, and the counterweight strip 25 is used to increase the weight of the lower end of the rolling curtain 22. By adding the counterweight strip 25, the stability of the rolling curtain 22 when it unfolds and hangs down can be improved, avoiding the instability of the environmental airflow caused by the flue gas and making the rolling curtain 22 shake; in addition, the unfolding of the rolling curtain 22 can be promoted by the counterweight strip 25.

[0027] In the above embodiment, as Figures 1 - 4 shown, the rolling curtain 22 is a metal curtain, and the metal curtain has strong high-temperature resistance and a long service life. Specifically, the metal curtain is preferably stainless steel, zinc alloy, etc.

[0028] In one embodiment, as Figures 1 - 4 shown, the driving assembly 3 includes a motor 31, a transmission case 32, a first transmission shaft 33 and a second transmission shaft 34. The transmission case 32 is installed on the top cover 1. The first transmission shaft 33 is connected to the transmission case 32. The first transmission shaft 33 is in transmission connection with the second transmission shaft 34. The motor 31 is connected to the input end of the transmission case 32. By rotating the motor 31, power is provided to the first transmission shaft 33 at both ends through the transmission case 32, and the second transmission shaft 34 is driven to rotate through the first transmission shaft 33; thus, power is provided to the rolling curtain assembly 2. Specifically, the towing rope 23 is wound around the first transmission shaft 33 and the second transmission shaft 34. Among them, the first transmission shaft 33 is installed on one side of the top cover 1, and the second transmission shaft 34 is installed on the adjacent sides where the first transmission shaft 33 is installed. When the rolling curtain 22 is retracted, the towing rope 23 is wound by the first transmission shaft 33 and the second transmission shaft 34. When the rolling curtain 22 is unfolded, the towing rope 23 is released, and the rolling curtain 22 sags and unfolds by its own weight.

[0029] In the above embodiment, as Figures 1 - 4 shown, the first transmission shaft 33 and the second transmission shaft 34 are connected by bevel gears 35.

[0030] In one embodiment, as Figures 1 - 4 shown, a curtain cloth 4 is provided on one side of the top cover 1 close to the octagonal furnace, and the lower end of the curtain cloth 4 is connected to the octagonal furnace. The shielding area is increased by the curtain cloth 4, and the curtain cloth 4 is fixedly connected to the top cover 1 and the octagonal furnace, and this part will not affect the normal use of the octagonal furnace.

[0031] In the above embodiment, as Figures 1 - 4 shown, the curtain cloth 4 is a metal curtain.

[0032] In the above embodiment, the rolling curtain 22 and the curtain cloth 4 are composed of a plurality of metal sheets arranged and hinged.

[0033] When the present utility model is in use, as Figure 4 shown, after the steel balls are heated in the octagonal furnace and then the octagonal furnace is tilted so that the steel balls pour out and fall into the quenching pool below; before this action, the rolling curtain assembly 2 is unfolded through the driving assembly 3 so that the circumference is blocked by the rolling curtain assembly; a large amount of smoke is generated when the steel balls are poured into the quenching pool, and the smoke is recovered through the air suction device. After quenching is completed, the rolling curtain assembly is retracted through the driving assembly 3, so as not to affect the loading and unloading of the steel balls.

[0034] The above are only the preferred embodiments of the present utility model and are not used to limit the scope of implementation of the present utility model; if the present utility model is modified or equivalently replaced without departing from the spirit and scope of the present utility model, it should be covered by the protection scope of the claims of the present utility model.

Claims

1. A fume recovery assembly for an octagonal furnace, characterized in that: It includes a top cover, a rolling curtain assembly and a driving assembly. The top cover is a square structure. An air suction port is arranged on the top of the top cover, and the air suction port is connected to an air suction device. Three groups of rolling curtain assemblies are arranged on the top cover and away from three sides of the octagonal furnace. The driving assembly is connected to the rolling curtain assembly, and the driving assembly is used to control the expansion and contraction of the rolling curtain assembly.

2. A fume recovery assembly for an octagonal furnace according to claim 1, characterized in that: The rolling curtain assembly includes a mounting bar, a rolling curtain and at least two traction ropes. The rolling curtain is fixed to the top cover through the mounting bar. The traction ropes hold up the rolling curtain. The retraction and expansion of the rolling curtain are controlled by pulling the traction ropes.

3. A fume recovery assembly for an octagonal furnace according to claim 2, characterized in that: The traction ropes are arranged at intervals, and the traction ropes are connected to the driving assembly.

4. A fume recovery assembly for an octagonal furnace according to claim 2, characterized in that: The rolling shutter assembly also includes a guide wheel, which is arranged on the top cover, and the traction rope passes through the guide wheel and is connected to the driving assembly.

5. A fume recovery assembly for an octagonal furnace according to claim 2, characterized in that: The rolling curtain assembly also includes a counterweight bar, which is installed at the lower end of the rolling curtain and is used to increase the weight of the lower end of the rolling curtain.

6. A fume recovery assembly for an octagonal furnace according to claim 2, characterized in that: The rolling curtain is a metal curtain.

7. A fume recovery assembly for an octagonal furnace according to claim 1, characterized in that: The driving assembly includes a motor, a transmission box, a first transmission shaft and a second transmission shaft. The transmission box is installed on the top cover. The first transmission shaft is connected to the transmission box. The first transmission shaft is connected to the second transmission shaft in a transmission connection. The motor is connected to the input end of the transmission box. The motor is used to control the rotation of the first transmission shaft and the second transmission shaft to drive the rolling shutter assembly to move.

8. A fume recovery assembly for an octagonal furnace according to claim 7, characterized in that: The first transmission shaft and the second transmission shaft are connected via a bevel gear.

9. A fume recovery assembly for an octagonal furnace according to claim 1, characterized in that: A curtain is arranged on one side of the top cover close to the octagonal furnace, and the lower end of the curtain is connected to the octagonal furnace.

10. A fume recovery assembly for an octagonal furnace according to claim 9, characterized in that: The curtain fabric is a metal curtain.

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