Dust removal device capable of preventing dust back flushing

Abstract

The utility model relates to the technical field of dust removal devices, and aims to solve the problems of low dust removal efficiency and easy blockage of a flue gas inlet pipe caused by easy back-flushing of dust back to the flue gas inlet pipe in the prior art. The utility model provides a dust removal device capable of preventing dust back flushing. The dust removal device comprises a dust collection tower and a feeding assembly, the feeding assembly comprises a first pipe section, a second pipe section and a third pipe section; the first pipe section is connected with the bottom side part of the dust collection tower; the first pipe section is connected with the third pipe section through the second pipe section; the third pipe section is higher than the first pipe section; the height difference between the first pipe section and the third pipe section is adjusted through the second pipe section, so that the third pipe section is higher than the first pipe section, furthermore, in the process that dust in the dust collection tower falls to the bottom of the dust collection tower and is discharged, the dust is blocked by the second pipe section even if the dust is back-flushed into the first pipe section, and the dust is prevented from falling into the dust collection tower. Therefore, the blockage of each pipe section can be avoided, and the flue gas dust removal efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal devices, in particular to a dust removal device capable of preventing dust recoil. Background Art

[0002] When a dust collector is used to treat the flue gas discharged from a rotary kiln, in order to improve the separation effect of the flue gas, in the prior art, the flue gas is usually introduced from the bottom side of the tower body of the dust collector, and the separated gas is discharged from the top of the tower body, while the collected dust is discharged from the bottom of the tower body;

[0003] However, since the flue gas inlet is close to the dust discharge port, the separated dust is easily impacted by the subsequent flue gas, causing the dust to be lifted and backwashed into the air intake pipe, causing the subsequent flue gas to be retained, thereby reducing the efficiency of flue gas dust removal and easily causing the air intake pipe to be blocked;

[0004] Based on the above description, there is an urgent need for a dust removal device that can improve dust removal efficiency and prevent dust recoil. Utility Model Content

[0005] The utility model aims to provide a dust removal device that prevents dust recoil, aiming to solve the technical problems in the prior art that dust is easily recoiled back into the flue gas inlet pipe, resulting in reduced dust removal efficiency and easy blockage of the inlet pipe.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] A dust removal device for preventing dust recoil comprises a dust collecting tower and a feeding assembly; the feeding assembly comprises a first pipe segment, a second pipe segment and a third pipe segment; the first pipe segment is connected to the bottom side of the dust collecting tower; the first pipe segment is connected to the third pipe segment through the second pipe segment; the third pipe segment is higher than the first pipe segment.

[0008] Preferably, the second pipe section is an arc-shaped curved pipe; the first pipe section is connected to the bottom end of the arc-shaped curved pipe; and the third pipe section is connected to the top end of the arc-shaped curved pipe.

[0009] Preferably, the third pipe segment is horizontally connected to the top end of the second pipe segment; and one end of the third pipe segment close to the second pipe segment is connected to a dredging component.

[0010] Preferably, the clearing component includes an air duct; the air duct is connected to the third pipe section.

[0011] Preferably, the bottom tube wall of the third tube segment is provided with a vent and a cover body covering the vent; the cover body is hinged to the inner wall of the third tube segment; and the air guide pipe is connected to the vent.

[0012] Preferably, a stopper is provided on the inner wall of the third pipe section; the stopper is provided at the bottom of the hinged end of the cover body.

[0013] Preferably, the clearing component also includes an air pipe; the air pipe is an arc-shaped conduit; one end of the arc-shaped conduit is connected to the third pipe section; and the other end of the arc-shaped conduit is connected to the air pipe.

[0014] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0015] The utility model provides a dust removal device for preventing dust recoil, in which the flue gas passes through a first pipe section, a second pipe section and a third pipe section in sequence before entering the interior of a dust collecting tower; wherein the height difference between the first pipe section and the third pipe section is adjusted by the second pipe section, so that the third pipe section is higher than the first pipe section, and further, during the process in which the dust in the dust collecting tower falls to the bottom of the dust collecting tower for discharge, even if the dust recoils into the first pipe section, it is blocked by the second pipe section and buffered in the first pipe section, and subsequently, after the third pipe section and the second pipe section continue to pass flue gas, the dust buffered in the first pipe section can be flushed back into the dust collector again, thereby avoiding blockage of each pipe section and improving the flue gas dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is an enlarged schematic diagram of the local structure A in Figure 1.

[0019] Icons: 1-dust collecting tower, 2-feeding assembly, 21-first pipe section, 22-second pipe section, 23-third pipe section, 4-dredging assembly, 41-air guide pipe, 42-inflation pipe, 5-cover body, 6-stopper. DETAILED DESCRIPTION

[0020] Example 1

[0021] See also Figure 1 to Figure 2 The utility model provides the following technical solutions: a dust removal device that prevents dust recoil, which is suitable for connecting the smoke inlet pipe to the bottom of the dust removal device near the discharge pipe.

[0022] Specifically, Figure 1 and Figure 2 As shown, a dust removal device for preventing dust recoil includes a dust collecting tower 1 and a feeding assembly 2; the feeding assembly 2 includes a first pipe segment 21, a second pipe segment 22 and a third pipe segment 23; the first pipe segment 21 is connected to the bottom side of the dust collecting tower 1; the first pipe segment 21 is connected to the third pipe segment 23 through the second pipe segment 22; the third pipe segment 23 is higher than the first pipe segment 21.

[0023] In this embodiment, the flue gas enters the dust collecting tower 1 after passing through the first pipe section 21, the second pipe section 22 and the third pipe section 23 in sequence; wherein, the height difference between the first pipe section 21 and the third pipe section 23 is adjusted by the second pipe section 22, so that the third pipe section 23 is higher than the first pipe section 21, and then, in the process of the dust falling from the dust collecting tower 1 to the bottom of the dust collecting tower 1 for discharge, even if the dust is rebounded into the first pipe section 21, it is blocked by the second pipe section 22 and buffered in the first pipe section 21, and then, after the third pipe section 23 and the second pipe section 22 continue to pass the flue gas, the dust buffered in the first pipe section 21 can be flushed back into the dust collector 1 again, thereby avoiding the blockage of each pipe section and improving the flue gas dust removal efficiency.

[0024] In this embodiment, the dust collector 1 is a bag dust collector commonly used in the chemical industry.

[0025] Specifically, Figure 1 and Figure 2 As shown, the second pipe section 22 is an arc-shaped curved pipe; the first pipe section 21 is connected to the bottom end of the arc-shaped curved pipe; and the third pipe section 23 is connected to the top end of the arc-shaped curved pipe.

[0026] In this embodiment, the arc of the arc-shaped elbow is one-quarter of a circle, and the inner wall of the arc-shaped elbow gradually becomes vertical from the top to the first pipe section 21, so that it can effectively prevent the dust from rebounding from the first pipe section 21 and will not expand to the second pipe section 22 and the third pipe section 23, and it can also form a slope flow for the subsequent flue gas. When the flue gas passes through the second pipe section 22 and reaches the first pipe section 21, the flue gas obtains a certain initial velocity, which can quickly impact the flue gas buffered in the first pipe section 21, thereby flushing the flue gas in the first pipe section 21 back into the dust collector 1.

[0027] Specifically, Figure 1 and Figure 2As shown, the third pipe section 23 is horizontally connected to the top of the second pipe section 22; the end of the third pipe section 23 close to the second pipe section 22 is connected to the dredging component 4. The dredging component 4 includes an air guide tube 41; the air guide tube 41 is connected to the third pipe section 23. The bottom pipe wall of the third pipe section 23 is provided with a vent and a cover body 5 covering the vent; the cover body 5 is hinged to the inner wall of the third pipe section 23; the air guide tube 41 is connected to the vent. The inner wall of the third pipe section 23 is provided with a stopper 6; the stopper 6 is arranged at the bottom of the hinged end of the cover body 5. The dredging component 4 also includes an inflation tube 42; the air guide tube 41 is an arc-shaped conduit; one end of the arc-shaped conduit is connected to the third pipe section 23; the other end of the arc-shaped conduit is connected to the inflation tube 42.

[0028] In the present embodiment, one end of the air guide tube 41 is ventilated through the inflation tube 42, and the compressed air flow introduced rushes out along the arc-shaped duct and pushes the cover body 5 to the block 6, which has a certain sealing effect on the third pipe segment 23, so that the compressed air flow rushes toward the second pipe segment 22 and the first pipe segment 21 through the vent, thereby cleaning the residual powder and being able to deal with the blockage of the pipe segment in special circumstances when the pipe segment is blocked.

[0029] In this embodiment, the block 6 and the cover body 5 can both be semicircular thin plates; the block 6 is hinged to the third pipe segment 23, and a limit block is provided at the hinged end of the third pipe segment 23 near the block 6, so as to ensure that when the smoke passes through, the block 6 moves downstream and tends to be horizontal; and when the compressed air flow enters the vent, the cover body 5 is erected and extends toward the block 6 in a vertical state, so that the compressed air flow is introduced into the second pipe segment 22 and the first pipe segment 21.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust removal device for preventing dust recoil, comprising a dust collecting tower (1), characterized in that: It also comprises a feed assembly (2); the feed assembly (2) comprises a first pipe section (21), a second pipe section (22) and a third pipe section (23); the first pipe section (21) is connected to the bottom side of the dust collecting tower (1); the first pipe section (21) is connected to the third pipe section (23) via the second pipe section (22); the third pipe section (23) is higher than the first pipe section (21).

2. The dust removal device for preventing dust recoil according to claim 1, characterized in that: The second pipe section (22) is an arc-shaped curved pipe; the first pipe section (21) is connected to the bottom end of the arc-shaped curved pipe; and the third pipe section (23) is connected to the top end of the arc-shaped curved pipe.

3. The dust removal device for preventing dust recoil according to claim 2, characterized in that: The third pipe section (23) is horizontally connected to the top end of the second pipe section (22); and one end of the third pipe section (23) close to the second pipe section (22) is connected to a dredging component (4).

4. The dust removal device for preventing dust recoil according to claim 3, characterized in that: The dredging component (4) comprises an air guide pipe (41); the air guide pipe (41) is in communication with the third pipe section (23).

5. The dust removal device for preventing dust recoil according to claim 4, characterized in that: The bottom wall of the third pipe section (23) is provided with a vent and a cover (5) covering the vent; the cover (5) is hingedly connected to the inner wall of the third pipe section (23); and the air guide pipe (41) is in communication with the vent.

6. The dust removal device for preventing dust recoil according to claim 5, characterized in that: A stopper (6) is provided on the inner wall of the third pipe section (23); the stopper (6) is arranged at the bottom of the hinged end of the cover body (5).

7. The dust removal device for preventing dust recoil according to any one of claims 4 to 6, characterized in that: The dredging component (4) further comprises an air pipe (42); the air guide pipe (41) is an arc-shaped conduit; one end of the arc-shaped conduit is in communication with the third pipe section (23); and the other end of the arc-shaped conduit is in communication with the air pipe (42).

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