In-furnace blowing dust removal mechanism

Abstract

The utility model discloses a blowing dust removal mechanism in a furnace, which comprises a furnace body and a control component, a filter bag is arranged in the furnace body, and an ash bucket is arranged at the bottom of the furnace body and is communicated with a discharge pipe; a blowing pipe for blowing and deashing the filter bag is mounted in the furnace body, the top end of the blowing pipe extends out of the top of the furnace body, and the blowing pipe is connected with an air inlet pipe; an air curtain assembly for preventing dust from being adsorbed to the side wall of the furnace body in the blowing dust removal process is further arranged at the top of the furnace body. The air curtain assembly is arranged on the peripheral side of the filter bag, an air curtain for protecting the inner wall of the furnace body is formed, dust blown off in the dust cleaning process can be prevented from being adsorbed to the side wall of the furnace body, the increase of cleaning work on the side wall of the furnace body is avoided, and the problem that the inner wall of the furnace body is prone to adsorbing dust is effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of dust removal mechanisms, specifically to an in-furnace jet dust removal mechanism. Background Technology

[0002] A dust collector is a device that separates dust from flue gas. In the process of dust removal in the furnace, filter bags are usually used to adsorb dust, and the flue gas after dust removal is discharged from the top of the furnace. Then, the dust adsorbed on the filter bags is blown off through the blowpipe, collected in the ash hopper, and discharged from the discharge pipe. However, the existing blowpipe cleaning mechanism only sets a blowpipe above the filter bags to blow the dust. During the blowpipe cleaning process, the dust is easily adsorbed on the inner wall of the furnace and accumulates, requiring regular cleaning of the furnace. Utility Model Content

[0003] The technical problem this invention aims to solve is to provide an in-furnace jet cleaning mechanism that prevents blown-off dust from being adsorbed onto the furnace sidewalls during the jet cleaning process.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0005] A furnace-in-furnace pulse-jet dust removal mechanism includes a furnace body and a control component. Filter bags are installed inside the furnace body, and an ash hopper is installed at the bottom of the furnace body, which is connected to a discharge pipe. A pulse-jet pipe for cleaning the filter bags is installed inside the furnace body, with the top end of the pulse-jet pipe extending out of the top of the furnace body and connected to an air inlet pipe. An air curtain component is also installed at the top of the furnace body to prevent dust from being adsorbed onto the side wall of the furnace body during the pulse-jet cleaning process.

[0006] The aforementioned in-furnace pulse-jet dust removal mechanism includes an air curtain assembly comprising an annular air duct disposed above the interior of the furnace body, the annular air duct being spaced apart from the outer periphery of the filter bag, and a plurality of nozzles being evenly distributed at the bottom of the annular air duct; the annular air duct is connected to the pulse-jet pipe via a branch air duct, and a regulating valve is provided on the branch air duct, the controlled end of the regulating valve being connected to the output end of the control component.

[0007] In the aforementioned in-furnace dust removal mechanism, an annular inner rack is provided at the top of the annular air duct. The annular inner rack is connected to the top of the furnace body through a rolling bearing. The annular inner rack meshes with a gear for transmission. The gear is connected to a drive motor located at the top of the furnace body. The controlled end of the drive motor is connected to the output end of the control component.

[0008] The aforementioned in-furnace dust removal mechanism has a blow valve installed on the blow pipe located below the air inlet of the branch gas pipe, and the controlled end of the blow valve is connected to the output end of the control component.

[0009] The aforementioned in-furnace dust removal mechanism has a ceramic anti-corrosion coating on the inner wall of the furnace.

[0010] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0011] This utility model provides an in-furnace jet dust removal mechanism. By setting an air curtain assembly on the outer periphery of the filter bag, an air curtain is formed to protect the inner wall of the furnace. This prevents dust blown off during the dust removal process from being adsorbed onto the side wall of the furnace, avoiding the need to clean the side wall of the furnace. At the same time, it ensures that the dust falls into the ash hopper and is discharged through the discharge pipe. In addition, by setting a ceramic anti-corrosion coating on the inner wall of the furnace, dust accumulation on the inner wall of the furnace can also be prevented, effectively solving the problem of dust easily adsorbing on the inner wall of the furnace. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the specific structure of the present utility model;

[0013] Figure 2 for Figure 1 Enlarged view of a local structure.

[0014] The components are: 1. furnace body, 2. filter bag, 3. ash hopper, 4. discharge pipe, 5. blow pipe, 6. rotary joint, 7. air inlet pipe, 8. annular air duct, 9. branch air duct, 10. regulating valve, 11. annular internal rack, 12. gear, 13. drive motor. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] An in-furnace dust removal mechanism, such as Figures 1 to 2 As shown, the furnace includes a furnace body 1 and a control assembly. A filter bag 2 is installed inside the furnace body 1. An ash hopper 3 is installed at the bottom of the furnace body 1 and is connected to a discharge pipe 4. A blower pipe 5 for cleaning the filter bag 2 by jet cleaning is installed inside the furnace body 1. The top of the blower pipe 5 extends out of the top of the furnace body 1 and is connected to an air inlet pipe 7. An air curtain assembly is also installed at the top of the furnace body 1 to prevent dust from being adsorbed onto the side wall of the furnace body during the jet cleaning process.

[0017] The air curtain assembly includes an annular air duct 8 located inside and above the furnace body 1. Several nozzles are evenly distributed at the bottom of the annular air duct 8. The annular air duct 8 is connected to the blow pipe 5 through a branch air duct 9. A regulating valve 10 is provided on the branch air duct 9. The controlled end of the regulating valve 10 is connected to the output end of the control component.

[0018] The annular air duct 8 is spaced apart from the outer periphery of the filter bag 2. The air duct blows downward to form an air curtain, which can prevent dust from being adsorbed onto the side wall of the furnace during the filter bag cleaning process.

[0019] The top of the annular air duct 8 is provided with an annular inner rack 11, which meshes with a gear 12 for transmission. The gear 12 is connected to a drive motor 13 located on the top of the furnace body 1, and the controlled end of the drive motor 13 is connected to the output end of the control component.

[0020] The gear 12 and the inner rack 11 drive the annular air duct to rotate, ensuring the stability of the air curtain formed by the annular air duct. To ensure that the air inlet pipe can supply air normally during the rotation of the annular air duct, the air inlet pipe 7 and the blow pipe 5 are connected by a rotary joint 6, so that the blow pipe 5 and the annular air duct rotate together.

[0021] Since the blowpipe 5 is located at the center above the filter bag 2, the blowpipe 5 will not affect the blowing of the filter bag during the rotation of the annular air duct 8.

[0022] A blow valve is installed on the blow pipe 5 located below the air inlet of the branch air pipe 9. The controlled end of the blow valve is connected to the output end of the control component, so that the gas in the blow pipe is preferentially sent into the annular air duct 8 to form an air curtain in advance before the blow cleaning. Then the blow valve is controlled to open and blow gas onto the filter bag.

[0023] To ensure that dust is adsorbed on the inner wall of the furnace, a ceramic anti-corrosion coating is installed on the inner wall of the furnace. This not only ensures the quality of the inner wall of the furnace, but also prevents dust from adsorbing on the side walls.

[0024] The usage process of this utility model is as follows:

[0025] First, the flue gas enters the furnace body through the air inlet at the bottom of the furnace body. Under the action of the negative pressure fan, the flue gas is adsorbed onto the surface of the filter bag, and the treated flue gas is discharged from the top of the furnace body. The air inlet of the furnace body and the negative pressure fan are both necessary components for furnace dust removal and are conventional technical means known to those skilled in the art, and are not shown in the figure.

[0026] After the flue gas is exhausted, the negative pressure fan stops operating. Then, the blowpipe 5 is controlled to deliver gas into the annular duct 8 through the branch air pipe to form an annular air curtain. Next, the blowpipe valve is controlled to open and blow gas onto the filter bag 2, so that the dust on the surface of the filter bag is blown off onto the ash hopper for collection.

[0027] To ensure the uniformity of the air curtain, when the amount of dust is large, the drive motor 13 can be started. Through the cooperation of the gear 12 and the inner ring rack 11, the annular air duct 8 is driven to rotate, ensuring the stability of the air curtain. At this time, the blow pipe 5 rotates together with the annular air duct 8 to blow the filter bag, blowing off the dust adsorbed on the surface of the filter bag. Under the obstruction of the air curtain, the dust is collected in the ash hopper and discharged from the discharge pipe 4.

[0028] This utility model provides an in-furnace jet dust removal mechanism. By setting an air curtain assembly on the outer periphery of the filter bag, an air curtain is formed to protect the inner wall of the furnace. This prevents dust blown off during the dust removal process from being adsorbed onto the side wall of the furnace, avoiding the need to clean the side wall of the furnace. At the same time, it ensures that the dust falls into the ash hopper and is discharged through the discharge pipe. In addition, by setting a ceramic anti-corrosion coating on the inner wall of the furnace, dust accumulation on the inner wall of the furnace can also be prevented, effectively solving the problem of dust easily adsorbing on the inner wall of the furnace.

Claims

1. A furnace-in-furnace dust removal mechanism, characterized in that: The furnace includes a furnace body (1) and a control assembly. A filter bag (2) is installed inside the furnace body (1), and an ash hopper (3) is installed at the bottom of the furnace body (1). The ash hopper (3) is connected to the discharge pipe (4). A blower pipe (5) for blowing and cleaning the filter bag (2) is installed inside the furnace body (1). The top of the blower pipe (5) extends out of the top of the furnace body (1) and is connected to the air inlet pipe (7). An air curtain assembly is also provided on the top of the furnace body (1) to prevent dust from being adsorbed onto the side wall of the furnace body during the blowing and cleaning process.

2. The in-furnace pulse-jet dust removal mechanism according to claim 1, characterized in that: The air curtain assembly includes an annular air duct (8) located above the inside of the furnace body (1). The annular air duct (8) is spaced apart from the outer periphery of the filter bag (2). Several nozzles are evenly distributed at the bottom of the annular air duct (8). The annular air duct (8) is connected to the blowpipe (5) through a branch air pipe (9). A regulating valve (10) is provided on the branch air pipe (9). The controlled end of the regulating valve (10) is connected to the output end of the control component.

3. The in-furnace dust removal mechanism according to claim 2, characterized in that: The top of the annular air duct (8) is provided with an annular inner rack (11), which is connected to the top of the furnace body (1) through a rolling bearing. The annular inner rack (11) meshes with a gear (12) for transmission. The gear (12) is connected to a drive motor (13) located on the top of the furnace body (1). The controlled end of the drive motor (13) is connected to the output end of the control component.

4. The in-furnace dust removal mechanism according to claim 2, characterized in that: A blow valve is provided on the blow pipe (5) located below the air inlet of the branch air pipe (9), and the controlled end of the blow valve is connected to the output end of the control component.

5. The in-furnace dust removal mechanism according to claim 1, characterized in that: The inner wall of the furnace body (1) is provided with a ceramic anti-corrosion coating.

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