CN219368386U

CN219368386U - Novel pneumatic sending tank device for dust collection ash of white corundum arc furnace

Info

Publication number: CN219368386U
Application number: CN202320009660.0U
Authority: CN
Inventors: 王欣欣; 崔庆阳; 王冰伟; 张乃琦; 王自鹏; 黄磊; 焦智宇
Original assignee: Luoyang Lier Functional Materials Co ltd
Current assignee: Luoyang Lier Functional Materials Co ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-07-18
Anticipated expiration: 2033-01-04

Abstract

A novel pneumatic transmitting tank device for dust collection ash of a white corundum arc furnace comprises: the device comprises a supporting frame, a sending tank, a main air pipe and a branch air pipe; the support frame is of a steel structure, the support frame is provided with a sending tank, the sending tank is formed by welding an upper cylinder body and a lower cone body, the cylinder body is of a cylindrical structure, the cone body is of a funnel-shaped structure, the cone body is provided with a lining plate on the inner wall conical surface, and a plurality of air-permeable bags are arranged on the lining plate; the sending tank is provided with a main air pipe in the middle of the outer wall of the sending tank, the main air pipe is connected with an air inlet ring pipe, the air inlet ring pipe is an annular pipe, the air inlet ring pipe is arranged on the outer wall of the sending tank and is provided with an air outlet, the air outlet is connected with the ventilation bags in one-to-one correspondence, the top of the sending tank is provided with a sealing bin cover which can be opened, the bottom end of the sending tank is provided with a discharging flange, the discharging flange is connected with a discharging pipe, and the discharging pipe is connected with a branch air pipe. The utility model avoids the direct suction of the dust collection ash by the induced draft fan after the dust collection ash is added into the arc furnace, improves the dust collection ash operation environment and has good economic benefit.

Description

Novel pneumatic sending tank device for dust collection ash of white corundum arc furnace

Technical Field

The utility model belongs to the technical field of refractory materials, and particularly relates to a novel pneumatic dust collection and delivery tank device for a white corundum arc furnace.

Background

The electro-fused white corundum is a high-grade refractory raw material, has alpha-Al 2O3 as a main crystal phase, is white in color and luster, and has the characteristics of high volume density, low porosity, good volume stability, good thermal shock resistance and the like. The electro-fused white corundum is prepared by taking industrial alumina powder as a raw material and smelting the industrial alumina powder in an electric arc furnace at high temperature. In the process of smelting the electro-fused white corundum in an electric arc furnace, gas containing industrial alumina powder enters an ash bucket under the attraction force of a draught fan, and dust-containing gas is filtered by utilizing the filtering effect of a fiber fabric. When the gas containing industrial alumina powder enters the bag type dust collector, the gas containing finer dust is blocked when passing through the filter material, so that the gas is purified, and the dust with large particles and large specific gravity is deposited under the action of gravity and falls into an ash bucket to be collected for short as dust collection ash. The main component of the dust collection ash is alumina powder, the aluminum content is low, and the impurity content such as potassium content, sodium content and the like is high. The granularity of the dust collection ash is too fine, the dust collection ash is directly added into an electric arc furnace to smelt white corundum, the utilization rate of direct suction by a draught fan is low, the content of potassium, sodium and other impurities in the dust collection ash which is not sucked is high and is easy to enrich in the white corundum, and the dust collection ash has adverse effects on the physicochemical properties of the white corundum.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to design a novel pneumatic sending tank device for dust collection ash of a white corundum arc furnace. The dust collecting ash is conveyed into a conveying pipeline from a conveying tank in a pressing way through pneumatic conveying, so that the dust collecting ash with finer granularity and high specific gravity can be added into an alumina powder raw material storage tank with industrial alumina powder according to a certain proportion, the impurity content of potassium content, sodium content and the like of the dust collecting ash is reduced after homogenization in the raw material storage tank, the production cost is reduced, and the physical and chemical properties of white corundum are not influenced.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a novel pneumatic transmitting tank device for dust collection ash of a white corundum arc furnace comprises: the device comprises a supporting frame, a sending tank, a main air pipe and a branch air pipe; the support frame is of a steel structure, a sending tank is arranged on the support frame, the sending tank is formed by welding an upper cylinder body and a lower cone body, the cylinder body is of a cylindrical structure, the cone body is of a funnel-shaped structure, a lining plate is arranged on the conical surface of the inner wall of the cone body, and a plurality of air-permeable bags are arranged on the lining plate; the sending tank is provided with a main air pipe in the middle of the outer wall thereof, the main air pipe is connected with an air inlet ring pipe, the air inlet ring pipe is an annular pipe, the sending tank is provided with air outlets which are connected with the air permeable bags in a one-to-one correspondence manner, the top of the sending tank is provided with an openable sealing bin cover, the bottom of the sending tank is provided with a discharging flange, the discharging flange is connected with a discharging pipe, and the discharging pipe is connected with a branch air pipe.

The main trachea one end connect the air compressor machine, the other end is connected with the transmission jar middle part, the main trachea be equipped with ball valve, powder check valve, manometer, relief valve and air inlet ring pipe from the direction of admitting air in proper order, the main trachea on still be equipped with the branch trachea, the branch trachea connect between relief valve and air inlet ring pipe.

The breathable bags are uniformly distributed on the lining plate arranged on the conical surface of the inner wall of the cone, the breathable bags are of a strip-shaped structure with one end open, and the open ends of the breathable bags are correspondingly connected with the air outlet of the air inlet ring pipe.

The discharging pipe constitute by return bend, powder butterfly valve and unloading hose, return bend one end connect the discharging flange, the return bend other end is provided with the powder butterfly valve, the other end of powder butterfly valve connect the unloading hose, the branch trachea include first branch trachea and second branch trachea, first branch trachea is connected with the return bend front end, second branch trachea is connected with the unloading hose.

The first branch air pipe and the second branch air pipe are respectively provided with a ball valve and a powder one-way valve.

The included angle between the conical surface of the cone and the bottom edge of the upper cylinder is 47 degrees.

The beneficial effects of the utility model are as follows: the electric arc furnace dust collection ash is conveyed from the conveying tank to the conveying pipeline in a pneumatic mode, so that the long-distance conveying of the powder with high specific gravity is assisted, and in the process of conveying industrial alumina powder by the cement tank truck, the electric arc furnace dust collection ash and the industrial alumina powder are homogenized in the raw material storage tank according to a certain proportion on the premise of ensuring the physicochemical index and the service performance of a white corundum product, the dust collection ash is prevented from being directly added into the electric arc furnace and being directly sucked by the induced draft fan, the dust collection ash operation environment is improved, and good economic benefits are achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of A-A in fig. 1.

In the figure: 1. the device comprises a supporting frame, 2, a sending tank, 201, a barrel, 202, a cone, 3, a main air pipe, 301, an air inlet ring pipe, 4, a branch air pipe, 401, a first branch air pipe, 402, a second branch air pipe, 5, a lining board, 6, an air permeable bag, 7, a sealing bin cover, 8, a discharging flange, 9, an elbow pipe, 10, a powder butterfly valve, 11, a discharging hose, 12, a connector, 13, a pressure gauge, 14 and a safety valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is to be noted that the embodiments described are merely some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a novel pneumatic transmission tank device for dust collection ash of a white corundum arc furnace comprises: a supporting frame 1, a transmitting tank 2, a main air pipe 3 and a branch air pipe 4; the support frame 1 is of a steel structure, the support frame 1 is provided with a sending tank 2, the sending tank 2 is formed by welding an upper cylinder 201 and a lower cone 202, the cylinder 201 is of a cylindrical structure, the cone 202 is of a funnel-shaped structure, the cone 202 is provided with a lining board 5 on the conical surface of the inner wall of the cone 202, and the lining board 5 is provided with a plurality of air-permeable bags 6; the gas-permeable sending tank is characterized in that a main gas pipe 3 is arranged in the middle of the outer wall of the sending tank 2, the main gas pipe 3 is connected with a gas inlet ring pipe 301, the gas inlet ring pipe 301 is an annular pipe, the gas inlet ring pipe is arranged on the outer wall of the sending tank 2 and is provided with gas outlets, the gas outlets are connected with the gas-permeable bags 6 in a one-to-one correspondence manner, a sealing bin cover 7 capable of being opened is arranged at the top of the sending tank 2, a discharging flange 8 is arranged at the bottom end of the sending tank 2, the discharging flange 8 is connected with a discharging pipe, and the discharging pipe is connected with a branch gas pipe 4.

The main trachea 3 one end connect the air compressor machine, the other end is connected with send jar 2 middle part, main trachea 3 from the direction of admitting air be equipped with ball valve, powder check valve, manometer 13, relief valve 14 and air inlet loop 301 in proper order, main trachea 3 on still be equipped with branch trachea 4, branch trachea 4 connect between relief valve 14 and air inlet loop 301.

The breathable bags 6 are uniformly distributed on the lining plate 5 arranged on the conical surface of the inner wall of the cone 202, the breathable bags 6 are of a strip-shaped structure with one end open, and the open ends of the breathable bags are correspondingly connected with the air outlet of the air inlet ring pipe 301.

The discharging pipe constitute by return bend 9, powder butterfly valve 10 and unloading hose 11, return bend 9 one end connect ejection of compact flange 8, the return bend 9 other end is provided with powder butterfly valve 10, the other end of powder butterfly valve 10 connect unloading hose 11, branch trachea 4 include first branch trachea 401 and second branch trachea 402, first branch trachea 401 is connected with return bend 9 front end, second branch trachea 402 is connected with unloading hose 11.

Ball valves and powder check valves are arranged on the first branch air pipe 401 and the second branch air pipe 402.

The cone 202 has a conical surface at an angle of 47 degrees to the bottom edge of the upper cylinder 201.

The utility model is used when in use: after the manufacture of the transmitting tank 2 is finished, a safety test is carried out, the pressurizing pressure is more than or equal to 0.3Pa, and no abnormality exists in 30 minutes. The air tightness test is 0.25MPa, and no air leakage exists in 4 hours. The angle of the cone 202 is 47 degrees, the side surface of the inner wall of the cone 202 is paved with 125mm x 800mm lining plates 5, the ventilation bag 6 is filled in from the upper part, the lower part is plugged, eight ventilation bags are fixed on the lining plates 5 on the inner wall in a shape of a Chinese character 'mi', and the ventilation bag 6 is connected with the main air pipe 3 through a clamp. The blanking hose 11 is a thickened steel wire braided fabric with the outer diameter of about 129mm and the length of less than 5 meters, and the blanking hose 11 is provided with a joint 12 which is matched with a blanking pipe of the bulk cement tank truck.

When the electric arc furnace dust collection device works, the electric arc furnace dust collection device is filled into the sending tank 2 through the sealing bin cover 7 arranged at the upper part, wind power generated by the air compressor passes through the ball valve and the powder one-way valve and enters the ventilation bag 6 in the sending tank 2 through the air inlet ring pipe 301, so that stronger negative pressure is generated in the tank, and the powder one-way valve effectively prevents dust and tiny particles from being extracted along with air; in this process, the air with a certain pressure is fully stored in the sending tank 2, when the suction is finished, the discharger under the cone 202 starts to work, the collected dust continuously falls from the discharge flange 8, the collected dust passing through the elbow 9 accompanies the gas pressure of the first branch gas pipe 401, and the collected dust passes through the powder butterfly valve 10, and enters the raw material storage tank from the discharge hose 11 under the gas pressure of the second branch gas pipe 402.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

The utility model is not described in detail in the prior art.

Claims

1. A novel pneumatic transmitting tank device for dust collection ash of a white corundum arc furnace comprises: the device comprises a supporting frame (1), a sending tank (2), a main air pipe (3) and a branch air pipe (4); the method is characterized in that: the support frame (1) is of a steel structure, the support frame (1) is provided with a sending tank (2), the sending tank (2) is formed by welding an upper cylinder body (201) and a lower cone body (202), the cylinder body (201) is of a cylindrical structure, the cone body (202) is of a funnel-shaped structure, the cone body (202) is provided with a lining plate (5) on the conical surface of the inner wall of the cone body, and the lining plate (5) is provided with a plurality of air-permeable bags (6); the utility model provides a gas-tight gas-discharging device, including sending jar (2), main trachea (3) are equipped with at its outer wall middle part, main trachea (3) be connected with air inlet ring pipe (301), air inlet ring pipe (301) be the annular pipe, set up at sending jar (2) outer wall to be equipped with a plurality of gas outlets and ventilative bag (6) one-to-one and be connected, sending jar (2) top be provided with sealed bin cover (7) that can open, be equipped with ejection of compact flange (8) in the bottom of sending jar (2), ejection of compact flange (8) connect the discharging pipe, be connected with branch trachea (4) on the discharging pipe.

2. The novel pneumatic transmission tank device for dust collection ash of white corundum arc furnace according to claim 1, which is characterized in that: main trachea (3) one end connect the air compressor machine, the other end is connected with send jar (2) middle part, main trachea (3) be equipped with ball valve, powder check valve, manometer (13), relief valve (14) and air inlet ring pipe (301) in proper order from the air inlet direction, main trachea (3) on still be equipped with branch trachea (4), branch trachea (4) connect between relief valve (14) and air inlet ring pipe (301).

3. The novel pneumatic transmission tank device for dust collection ash of white corundum arc furnace according to claim 1, which is characterized in that: the breathable bags (6) are uniformly distributed on the lining plate (5) arranged on the conical surface of the inner wall of the cone (202), the breathable bags (6) are of a strip-shaped structure with one end open, and the open ends of the breathable bags are correspondingly connected with the air outlets of the air inlet ring pipes (301).

4. The novel pneumatic transmission tank device for dust collection ash of white corundum arc furnace according to claim 1, which is characterized in that: the discharging pipe constitute by return bend (9), powder butterfly valve (10) and unloading hose (11), return bend (9) one end connect ejection of compact flange (8), the return bend (9) other end is provided with powder butterfly valve (10), the other end of powder butterfly valve (10) connect unloading hose (11), branch trachea (4) include first branch trachea (401) and second branch trachea (402), first branch trachea (401) are connected with return bend (9) front end, second branch trachea (402) are connected with unloading hose (11).

5. The novel pneumatic transmission tank device for dust collection ash of the white corundum arc furnace, which is characterized in that: ball valves and powder check valves are arranged on the first branch air pipe (401) and the second branch air pipe (402).

6. The novel pneumatic transmission tank device for dust collection ash of white corundum arc furnace according to claim 1, which is characterized in that: the included angle between the conical surface of the cone (202) and the bottom edge of the upper cylinder (201) is 47 degrees.