Blast furnace gas cyclone dust collector

Abstract

The utility model discloses a cyclone dust collector for blast furnace gas. The cyclone dust collector comprises a barrel straight section, a barrel conical section, a connecting section and an ash bin which are sequentially communicated from top to bottom, the large-caliber end of the cylinder conical section is aligned and connected with the lower port of the cylinder straight section, and the lower-caliber end of the cylinder conical section is aligned and connected with the upper end of the connecting section; the top of the straight section of the barrel body is connected with an exhaust pipe; an air inlet pipe is arranged on one side of the upper part of the cylinder straight section; a channel for communicating the conical section of the cylinder body with the ash bin is arranged in the connecting section, and the channel is of a structure with a round upper part and a lower part; a vertical baffle is arranged in the channel and divides the channel into two cavities in the vertical direction. The utility model has the beneficial effects that the channel of the connecting section does not adopt a circular section, but adopts a circular sample to a quadrangle, and the vertical baffle plate is arranged in the channel, so that the axial symmetry geometric structure of the connecting section is changed, the inner rotational flow is difficult to develop towards the ash bin, the escape of dust particles in the ash bin is reduced, and the dust removal efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace gas dust removal, in particular to a blast furnace gas cyclone dust collector. Background Art

[0002] Cyclone dust collector is a common blast furnace gas dust removal device. The dust removal mechanism is to make the dust-laden airflow rotate, use centrifugal force to separate the dust particles from the airflow and capture them on the wall of the device, and then use gravity to make the dust particles fall into the ash bin.

[0003] Currently, a traditional cyclone dust collector consists of an inlet pipe, an exhaust pipe, a cylindrical straight section, a conical section, and an ash bin. The dust-laden airflow enters the top of the cyclone dust collector through the inlet pipe, swirls downward, and after reaching the cone, it swirls upward before being discharged through the exhaust pipe. Dust particles in the airflow are driven toward the inner wall of the dust collector barrel by centrifugal force. Under the influence of their own weight and the airflow, they slide down the inner wall of the dust collector barrel and fall into the lower ash bin. However, due to the strong effect of the internal swirling airflow, dust particles in the ash bin are likely to be re-entrained and flow out of the exhaust pipe, causing secondary dust in the ash bin and low dust removal efficiency. Summary of the Invention

[0004] The purpose of the utility model is to provide a blast furnace gas cyclone dust collector to address the deficiencies of the existing technology, aiming to prevent secondary dust from being emitted from the ash bin and improve the dust removal efficiency.

[0005] The technical solution adopted by the utility model is: a blast furnace gas cyclone dust collector, comprising a cylinder straight section, a cylinder conical section, a connecting section and an ash bin which are sequentially connected from top to bottom;

[0006] The large-diameter end of the cylindrical cone section is aligned and connected to the lower end of the cylindrical straight section, and the lower-diameter end of the cylindrical cone section is aligned and connected to the upper end of the connecting section;

[0007] The top of the straight section of the cylinder is connected to an exhaust pipe; an air inlet pipe is provided on one side of the upper portion of the straight section of the cylinder;

[0008] A channel connecting the cylindrical cone section and the ash bin is provided in the connecting section, and the channel is a structure with an upper circle and a lower part; a vertical baffle is provided in the channel, and the baffle divides the channel into two cavities along the vertical direction.

[0009] According to the above solution, both side edges of the baffle are respectively connected to the channel walls of the connecting section.

[0010] According to the above solution, the upper end of the baffle is flush with the upper end of the channel, and the lower end of the baffle is flush with the lower end of the channel.

[0011] According to the above solution, the channel of the connecting section has an upper circular and lower bottom structure, that is, the upper end of the channel is circular and the lower end of the channel is square.

[0012] According to the above solution, the connecting section as a whole also has an upper circular and lower bottom structure, the upper end surface of the connecting section is circular, and the lower end of the connecting section is square.

[0013] According to the above solution, the cross-sectional area of ​​the upper channel port of the connecting section is smaller than the cross-sectional area of ​​the lower channel port.

[0014] The beneficial effects of the present invention are as follows: in the present invention, blast furnace gas enters the cyclone dust collector and exhibits external and internal swirling flows within the cylinder. The connecting section channel does not adopt a circular cross-section, but rather a circular cross-section that is expanded to a square or rectangular shape. Vertical baffles are arranged within the channel. This design changes the axisymmetric geometry of the connecting section, making it difficult for the external and internal swirling flows to develop into the ash bin, reducing the escape of dust particles within the ash bin and thereby improving dust removal efficiency. The present invention has a simple structure and a reasonable design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0016] Figure 2 for Figure 1 main view.

[0017] Figure 3 for Figure 1 side view.

[0018] Figure 4 for Figure 1 Top view of .

[0019] Figure 5 Schematic diagram of the connection between the connecting section and the baffle in this embodiment.

[0020] Among them: 1-exhaust pipe; 2-intake pipe; 3-straight section of the cylinder; 4-conical section of the cylinder; 5-baffle; 6-connecting section; 7-ash bin. DETAILED DESCRIPTION

[0021] In order to better understand the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 4 The blast furnace gas cyclone dust collector shown in the figure comprises a cylinder straight section 3, a cylinder conical section 4, a connecting section 6 and an ash bin 7 which are connected in sequence from top to bottom;

[0023] The large diameter end of the cylindrical cone section 4 is aligned and connected to the lower end of the cylindrical straight section 3, and the lower diameter end of the cylindrical cone section 4 is aligned and connected to the upper end of the connecting section 6;

[0024] The top of the straight section 3 of the cylinder is connected to the exhaust pipe 1; an air inlet pipe 2 is provided on one side of the upper portion of the straight section 3 of the cylinder;

[0025] The connecting section 6 is provided with a channel connecting the cylindrical cone section 4 and the ash bin 7, and the channel is a structure with an upper circle and a lower part; Figure 5 As shown, a vertical baffle 5 is provided in the channel, and the baffle 5 divides the channel into two cavities along the vertical direction.

[0026] In the present invention, the straight section 3 of the cylinder and the conical section 4 of the cylinder constitute the cylinder of the dust collector; the straight section 3 of the cylinder is a cylindrical structure with a hollow interior, and the conical section 4 of the cylinder is a conical structure with a hollow interior.

[0027] Preferably, both side edges of the baffle 5 are connected to the channel walls of the connecting section 6 respectively.

[0028] Preferably, the upper end of the baffle 5 is flush with the upper end of the channel, and the lower end of the baffle 5 is flush with the lower end of the channel.

[0029] In the present invention, the channel of the connecting section 6 is a structure with an upper circle and a lower part, that is, the upper end of the channel is circular, and the lower end of the channel is square or rectangular; correspondingly, the connecting section 6 as a whole also has a structure with an upper circle and a lower part, the upper end face of the connecting section 6 is circular, and the lower end of the connecting section 6 is square.

[0030] Preferably, the cross-sectional area of ​​the upper channel port of the connecting section 6 is smaller than the cross-sectional area of ​​the lower channel port.

[0031] In the present invention, the baffles 5 can be arranged in multiple pieces, and are arranged in parallel with vertical intervals in the channel.

[0032] In the present invention, the connecting section 6 is designed to be an upper circular and lower surface structure, that is, the connecting section 6 is a non-axisymmetric geometric structure in the axial direction.

[0033] Example

[0034] like Figure 1 The blast furnace cyclone dust collector shown includes a straight section 3 of the cylinder, a conical section 4 of the cylinder, a connecting section 6 and an ash bin 7; an exhaust pipe 1 is provided on the top of the straight section 3 of the cylinder, and an air inlet pipe 2 is provided on the outer side of the upper part of the straight section 3 of the cylinder; the lower end of the straight section 3 of the cylinder is aligned and connected with the large-diameter end (i.e., the upper end) of the conical section 4 of the cylinder; the connecting section 6 is a structure with an upper circle and a lower bottom, and the upper end of the connecting section 6 is aligned and connected with the small-diameter end (i.e., the lower end) of the conical section 4 of the cylinder; the upper port of the channel in the connecting section 6 is circular, aligned with and connected with the lower port of the conical section 4 of the cylinder; the lower port of the channel of the connecting section 6 is square, and is connected to the connecting port opened on the top of the ash bin 7; the baffle 5 is vertically centered or not centered in the channel of the connecting section 6, and the two side edges of the baffle 5 are connected to the wall of the channel, and the upper and lower end faces of the baffle 5 are respectively flush with the upper and lower ports of the connecting port.

[0035] The working principle of this utility model is:

[0036] The dust-laden airflow enters the cyclone dust collector from the air inlet pipe 2, rotates downward along the inner wall of the straight section 3 of the cylinder to form an outward rotating airflow, and after the outward rotating airflow reaches the cone, it rotates upward to form an inward rotating airflow, and is finally discharged from the exhaust pipe 1; the dust particles in the airflow move toward the inner wall of the cylinder 3 due to the centrifugal force, and slide down along the inner wall of the dust collector cylinder 3 under the action of their own weight and airflow, and fall into the lower ash bin 7 through the cylinder cone section 4 and the connecting section 6; since the connecting section 6 is a non-axisymmetric structure and a baffle 5 is arranged inside it, it is difficult for the outward rotating flow or the inward rotating flow to develop into the ash bin, thereby reducing the escape of dust particles in the ash bin 7 and improving the dust removal efficiency.

[0037] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0038] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blast furnace gas cyclone dust collector, characterized in that: It includes a cylinder straight section, a cylinder cone section, a connecting section and an ash bin which are connected in sequence from top to bottom; The large-diameter end of the cylindrical cone section is aligned and connected to the lower end of the cylindrical straight section, and the lower-diameter end of the cylindrical cone section is aligned and connected to the upper end of the connecting section; The top of the straight section of the cylinder is connected to an exhaust pipe; an air inlet pipe is provided on one side of the upper portion of the straight section of the cylinder; A channel connecting the cylindrical cone section and the ash bin is provided in the connecting section, and the channel is a structure with an upper circle and a lower part; a vertical baffle is provided in the channel, and the baffle divides the channel into two cavities along the vertical direction.

2. The blast furnace gas cyclone dust collector according to claim 1, characterized in that: Both side edges of the baffle are respectively connected to the channel walls of the connecting section.

3. The blast furnace gas cyclone dust collector according to claim 1 or 2, characterized in that: The upper end of the baffle is flush with the upper end of the channel, and the lower end of the baffle is flush with the lower end of the channel.

4. The blast furnace gas cyclone dust collector according to claim 3, characterized in that: The channel of the connecting section is an upper circular and lower bottom structure, that is, the upper end of the channel is circular and the lower end of the channel is square.

5. The blast furnace gas cyclone dust collector according to claim 3, characterized in that: The connecting section as a whole is also in an upper circular and lower bottom structure, the upper end surface of the connecting section is circular, and the lower end of the connecting section is square.

6. The blast furnace gas cyclone dust collector according to claim 3, characterized in that: The cross-sectional area of ​​the upper channel port of the connecting section is smaller than the cross-sectional area of ​​the lower channel port.

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