Cooling device for dust removal pipeline

Abstract

The utility model discloses a dust removal pipeline cooling device which comprises a dust removal pipeline, and the tail end of the dust removal pipeline is connected with a cyclone separation shell communicated with an inner cavity of the dust removal pipeline. A sleeve is arranged outside the dust removal pipeline, a core pipe is arranged inside the dust removal pipeline, and an inner cavity of the core pipe is communicated with an inner cavity of the sleeve through a connecting channel; the end, close to the cyclone separation shell, of the sleeve is connected with a first water inlet branch pipe. The end, close to the cyclone separation shell, of the core pipe is connected with a first water return branch pipe. A cooling jacket is arranged outside the cyclone separation shell, a second water inlet branch pipe communicated with an inner cavity of the cooling jacket is arranged at the bottom of the cooling jacket, and the second water inlet branch pipe and the first water inlet branch pipe are communicated with the water inlet main pipe through a tee joint; a second water return branch pipe communicated with the inner cavity of the cooling jacket is arranged at the top of the cooling jacket; the second water return branch pipe and the first water return branch pipe are communicated with the water return main pipe through a tee joint. According to the utility model, on the premise of not heating the dust removal pipeline, the generation of condensed water in the dust remover is eliminated, the dust removal effect is ensured, and the energy consumption and the labor investment are reduced.

Description

Technical Field

[0001] The utility model relates to a dust removal pipeline cooling device and belongs to the technical field of bag dust removal. Background Art

[0002] During the operation of the bag dust collector, blockage may occur due to various reasons, which will not only affect the performance of the dust collector, but also increase the operating cost and maintenance difficulty.

[0003] The flue gas generated by the casting production line is of high temperature and contains moisture. In the low temperature period of winter, the high temperature flue gas will form condensed water in the dust collector, and the smoke particles discharged mixed with moisture will cause the dust collection bags to be blocked, and the flue gas cannot be discharged, and the dust collection effect of the dust collector will be reduced or fail. In order to avoid the generation of condensed water, it is currently generally adopted to heat the dust collection pipeline to evaporate part of the water while maintaining a certain temperature of the flue gas, so that when the flue gas enters the bag dust collector again, the dust collection bag can be prevented from being blocked due to moisture.

[0004] At present, natural gas is commonly used for heating dust removal pipes, which involves certain fuel costs and labor input, increasing costs.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] In view of the deficiencies in the background technology, the utility model provides a dust removal pipeline cooling device, which can eliminate the generation of condensed water in the dust collector without heating the dust removal pipeline, thereby ensuring the dust removal effect and reducing energy consumption and labor input.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A dust removal pipeline cooling device comprises a dust removal pipeline, wherein the end of the dust removal pipeline is connected to a cyclone separation shell connected to the inner cavity of the dust removal pipeline; a sleeve is arranged outside the dust removal pipeline, a core tube is arranged inside the dust removal pipeline, and the inner cavity of the core tube is connected to the inner cavity of the sleeve through a connecting channel;

[0009] One end of the sleeve close to the cyclone separation shell is connected to a first water inlet branch pipe, and one end of the core tube close to the cyclone separation shell is connected to a first water return branch pipe;

[0010] A cooling jacket is provided outside the cyclone separation shell, a second water inlet branch pipe connected to the inner cavity of the cooling jacket is provided at the bottom of the cooling jacket, and the second water inlet branch pipe and the first water inlet branch pipe are connected to the water inlet main pipe through a tee;

[0011] A second water return branch pipe connected to the inner cavity of the cooling jacket is arranged on the top of the cooling jacket, and the second water return branch pipe and the first water return branch pipe are connected to the water return main pipe through a tee.

[0012] Furthermore, the core tube, the dust removal duct and the sleeve are coaxially arranged, and both ends of the sleeve and the core tube are sealed.

[0013] Furthermore, a spiral blade is installed between the inner wall of the dust removal pipe and the outer wall of the core tube, and the spiral blade causes the high-temperature flue gas to flow in a spiral.

[0014] Furthermore, the connecting channel is located at an end of the core tube away from the cyclone separation shell.

[0015] Furthermore, the first water inlet branch pipe is communicated with the inner cavity of the casing, and the first water return branch pipe is communicated with the inner cavity of the core tube.

[0016] Furthermore, a central pipe is fixedly installed in the middle of the inner cavity of the cyclone separation shell, and the top outlet end of the central pipe is connected to the dust collector through a pipeline.

[0017] Furthermore, a drain port is provided at the bottom of the inner cavity of the cyclone separation shell.

[0018] Furthermore, an inclined guide plate is provided on the upper portion of the inner cavity of the cyclone separation shell.

[0019] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0020] The utility model arranges cooling water circulation pipelines inside and outside the dust removal pipeline. During the high-temperature flue gas flowing in the dust removal pipeline, it fully exchanges heat with the internal and external cooling water to achieve cooling. The water vapor entrained in the high-temperature flue gas is condensed. The condensed water enters the inner cavity of the cyclone separation shell with the flue gas to achieve cyclone separation. The separated condensed water and large particles are discharged from the drain port. The flue gas enters the dust collector at a relatively low temperature and in a dry state to perform dust removal, thereby avoiding the problem of clogging of the dust bag.

[0021] The utility model can eliminate the generation of condensed water in the dust collector without heating the dust removal pipeline, thereby ensuring the dust removal effect and reducing energy consumption and labor input.

[0022] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0025] Figure 3 It is a schematic diagram of the utility model in use.

[0026] In the figure, 1-dust removal pipeline, 2-cyclone separation shell, 3-casing, 4-core pipe, 5-connecting channel, 6-first water inlet branch, 7-water inlet main pipe, 8-first return water branch, 9-return water main pipe, 10-cooling jacket, 11-center pipeline, 12-second water inlet branch, 13-second return water branch, 14-drainage port, 15-guide plate, 16-spiral blade. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0028] like Figure 1-Figure 3 As shown together, the utility model provides a dust removal duct cooling device, comprising a dust removal duct 1, the end of the dust removal duct 1 is connected to a cyclone separation shell 2, and the inner cavities of the two are connected.

[0029] A sleeve 3 is provided outside the dust removal pipe 1, and a core pipe 4 is provided inside the dust removal pipe 1. The core pipe 4, the dust removal pipe 1 and the sleeve 3 are coaxially arranged, and both ends of the sleeve 3 and the core pipe 4 are sealed.

[0030] The inner cavity of the core tube 4 is connected to the inner cavity of the sleeve 3 through a connecting channel 5, and the connecting channel 5 is located at an end of the core tube 4 away from the cyclone separation shell 2. The cooling water in the inner cavity of the sleeve 3 can flow into the core tube 4 through the connecting channel 5.

[0031] One end of the sleeve 3 close to the cyclone separation shell 2 is connected to a first water inlet branch 6, which is communicated with the inner cavity of the sleeve 3; one end of the core tube 4 close to the cyclone separation shell 2 is connected to a first water return branch 8, which is communicated with the inner cavity of the core tube 4.

[0032] A spiral blade 16 is installed between the inner wall of the dust removal pipe 1 and the outer wall of the core tube 4. The spiral blade 16 causes the high-temperature flue gas to flow in a spiral manner, and fully exchanges heat with the cooling water in the inner cavity of the core tube 4 and the inner cavity of the sleeve 3 during the spiral flow.

[0033] The outside of the cyclone separation shell 2 is provided with a cooling jacket 10, and the bottom of the cooling jacket 10 is provided with a second water inlet branch pipe 12 connected to its inner cavity. The second water inlet branch pipe 12 and the first water inlet branch pipe 6 are connected to the water inlet main pipe 7 through a tee.

[0034] A second water return branch pipe 13 communicating with the inner cavity of the cooling jacket 10 is disposed on the top of the cooling jacket 10 . The second water return branch pipe 13 and the first water return branch pipe 8 are communicated with the water return main pipe 9 through a tee.

[0035] A central pipe 11 is fixedly installed in the middle of the inner cavity of the cyclone separation shell 2, and the top outlet end of the central pipe 11 is connected to the dust collector through a pipeline.

[0036] A liquid discharge port 14 is provided at the bottom of the inner cavity of the cyclone separation shell 2 .

[0037] The guide plate 15 is arranged obliquely on the upper part of the inner cavity of the cyclone separation shell 2. The guide plate 15 makes the flue gas flowing in from the dust removal pipe 1 swirl between the inner wall of the cyclone separation shell 2 and the outer wall of the central pipe 11, and separates the condensed water and large particles during the swirl process.

[0038] The specific working principle of this utility model:

[0039] The cooling water is divided into two from the water inlet main pipe 7. One branch is from the first water inlet branch pipe 6 to the sleeve 3, the connecting channel 5 and the core pipe 4 in sequence, and finally enters the return water main pipe 9 from the first return water branch pipe 8. The other cooling branch is from the second water inlet branch pipe 12 to the cooling jacket 10, and finally enters the return water main pipe 9 from the second return water branch pipe 13. At the same time, the high-temperature flue gas enters the dust removal pipe 1 and flows in a spiral. During the spiral flow, it fully exchanges heat with the internal and external cooling water to achieve cooling. The water vapor entrained in the high-temperature flue gas is condensed, and the condensed water enters the inner cavity of the cyclone separation shell 2 with the flue gas to achieve cyclone separation. The separated condensed water and large particles will be discharged from the drain port 14 to dry the flue gas. The flue gas continues to cool in the cyclone separation shell 2. The cooled flue gas enters the dust collector through the central pipe 11 at a lower temperature and in a dry state for dust removal, thereby avoiding the problem of dust bag clogging.

[0040] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A dust removal pipeline cooling device, characterized in that: The dust removal pipeline (1) comprises a dust removal pipeline (1), wherein the end of the dust removal pipeline (1) is connected to a cyclone separation shell (2) which is in communication with the inner cavity thereof; a sleeve (3) is provided on the outside of the dust removal pipeline (1), and a core tube (4) is provided on the inside of the dust removal pipeline (1); the inner cavity of the core tube (4) is in communication with the inner cavity of the sleeve (3) via a connecting passage (5); One end of the sleeve (3) close to the cyclone separation shell (2) is connected to a first water inlet branch pipe (6), and one end of the core tube (4) close to the cyclone separation shell (2) is connected to a first water return branch pipe (8); A cooling jacket (10) is provided outside the cyclone separation shell (2); a second water inlet branch pipe (12) connected to the inner cavity of the cooling jacket (10) is provided at the bottom of the cooling jacket (10); the second water inlet branch pipe (12) and the first water inlet branch pipe (6) are connected to the water inlet main pipe (7) via a tee; A second water return branch pipe (13) connected to the inner cavity of the cooling jacket (10) is provided at the top thereof, and the second water return branch pipe (13) and the first water return branch pipe (8) are connected to the water return main pipe (9) via a tee.

2. A dust removal duct cooling device according to claim 1, characterized in that: The core tube (4), the dust removal pipeline (1) and the sleeve (3) are coaxially arranged, and both ends of the sleeve (3) and the core tube (4) are sealed.

3. A dust removal duct cooling device according to claim 1, characterized in that: A spiral blade (16) is installed between the inner wall of the dust removal duct (1) and the outer wall of the core tube (4), and the spiral blade (16) causes the high-temperature flue gas to flow in a spiral.

4. A dust removal duct cooling device according to claim 1, characterized in that: The connecting channel (5) is located at an end of the core tube (4) away from the cyclone separation shell (2).

5. A dust removal duct cooling device according to claim 1, characterized in that: The first water inlet branch pipe (6) is connected to the inner cavity of the casing pipe (3), and the first water return branch pipe (8) is connected to the inner cavity of the core pipe (4).

6. A dust removal duct cooling device according to claim 1, characterized in that: A central pipe (11) is fixedly installed in the middle of the inner cavity of the cyclone separation shell (2), and the top outlet end of the central pipe (11) is connected to the dust collector through a pipeline.

7. A dust removal duct cooling device according to claim 6, characterized in that: A liquid discharge port (14) is provided at the bottom of the inner cavity of the cyclone separation shell (2).

8. A dust removal duct cooling device according to claim 7, characterized in that: The upper part of the inner cavity of the cyclone separation shell (2) is provided with a guide plate (15) arranged obliquely.

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