High-temperature-resistant ventilation device for bag-type dust collector

Abstract

The utility model relates to the technical field of bag-type dust removal, in particular to a high-temperature-resistant ventilation device for a bag-type dust remover, which is used for being mounted on the bag-type dust remover, the bag-type dust remover comprises a dust hopper and a dust removal box arranged above the dust hopper, a filter element is arranged in the dust removal box, and the high-temperature-resistant ventilation device for the bag-type dust remover comprises an air inlet pipe body, the air inlet pipe body is a pipe body and is Y-shaped, the air inlet pipe body is arranged on an ash hopper of the bag-type dust collector and is communicated with an air inlet, a cooling coil pipe is arranged in the air inlet pipe body, a main pipeline, a first branch pipeline and a second branch pipeline are arranged in the air inlet pipe body, the cooling coil pipe is arranged on the inner wall of the main pipeline, and cooling water is filled in the cooling coil pipe. The cooling coil pipe is partially arranged in the main pipeline, the other part of the cooling coil pipe extends into the second branch pipeline, the cooling coil pipe directly faces the first branch pipeline, the first branch pipeline is communicated with the ash bucket, the second branch pipeline is located below the first branch pipeline and obliquely arranged, and the second branch pipeline is communicated with the ash bucket.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to a high-temperature ventilator for a bag filter. Background Technology

[0002] Baghouse dust collectors are mainly used to capture fine, dry, non-fibrous dust in the air. They use fabric bags to filter dust from the gas. Larger, heavier dust particles settle into the ash hopper under gravity, while the gas containing finer dust particles is trapped as it passes through the bags, thus purifying the gas. The filter bags, as the main filter elements, are usually made of high-temperature resistant materials, such as fiberglass or polytetrafluoroethylene (PTFE). However, the maximum temperature they can withstand is typically around 230°C, with a limit of 260°C. In actual operation, baghouse dust collectors are often connected to incinerators, where temperatures can reach over 1000°C, and the temperature of the dust-laden gas can reach 800°C. Directly introducing high-temperature gas into the baghouse dust collector can damage the filter element, so a transfer chamber is usually required to cool the high-temperature gas. For example, Chinese patent document CN201720177975.0 discloses a high-temperature and low-pressure resistant long-bag pulse dust collector, including a bag filter. The clean air chamber is divided into multiple sub-clean air chambers, each sub-clean air chamber having two ends, namely an inlet end and an outlet end. Each sub-clean air chamber is equipped with a filter bag, the open end of which is located at the outlet end of the sub-clean air chamber. The outlet end of the sub-clean air chamber is adapted to seal and isolate the open end of the filter bag from the inner cavity of the sub-clean air chamber. The inlet end of the sub-clean air chamber is sealed and connected to the inlet of the bag filter. The open end of each filter bag is connected to... The outlet of the bag filter is sealed and connected; at least two bag filters are combined into a whole to form the dust removal equipment, which has a main air inlet and a main air outlet. The main air inlet is sealed and connected to the air inlet of each bag filter, and the main air outlet is sealed and connected to the air outlet of each bag filter. The above patent provides cooling cavities for high-temperature gas by setting multiple sub-clean air chambers, which ensures the stability of the filter element operation. However, too many cooling cavities will accumulate a large amount of dust inside, which is difficult to clean, resulting in more processes and increased production costs.

[0003] Therefore, it is necessary for those skilled in the art to provide a high-temperature venting device for bag filters to cool down the high-temperature gas entering the bag filter, prevent filter element damage, and reduce production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a high-temperature venting device for bag filters, so as to solve the technical problem that high-temperature gas entering the bag filter can easily damage the filter element.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-temperature venting device for a bag filter, which is installed on a bag filter. The bag filter includes a dust hopper and a dust collection box set above the dust hopper. The dust collection box contains a filter element. The dust hopper has an air inlet and the dust collection box has an air outlet. The high-temperature venting device for the bag filter includes an air inlet pipe body, which is a pipe body in a Y shape. The air inlet pipe body is installed on the dust hopper of the bag filter and connected to the air inlet. A cooling coil is provided inside the air inlet pipe body. The air inlet pipe body contains a main pipe, a first branch pipe and a second branch pipe. The cooling coil is set on the inner wall of the main pipe. Cooling water flows through the cooling coil. Part of the cooling coil is set inside the main pipe, and the other part of the cooling coil extends into the second branch pipe. The cooling coil is directly opposite the first branch pipe. The first branch pipe is connected to the dust hopper. The second branch pipe is located below the first branch pipe and is set at an angle. The second branch pipe is connected to the dust hopper.

[0006] Furthermore, the first branch pipe is coaxially arranged with the main pipe and connected to the ash hopper, one end of the first branch pipe is connected to the air inlet, and the other end of the first branch pipe is connected to the main pipe.

[0007] Furthermore, the main pipeline is horizontally arranged, one end of the second branch pipeline is set on the main pipeline and connected to it, and the other end of the second branch pipeline is set on the ash hopper and connected to it.

[0008] Furthermore, the angle between the axis of the second branch pipe and the axis of the first branch pipe is greater than 30°.

[0009] Furthermore, the diameter of the first branch pipe is smaller than the diameter of the main pipe.

[0010] Furthermore, one-way valves are installed in the first branch pipe and the second branch pipe.

[0011] Furthermore, the cooling water is water.

[0012] The beneficial effects of this utility model are as follows: This utility model achieves cooling of high-temperature dust-laden gas by setting a Y-shaped air intake pipe and installing a cooling coil inside the air intake pipe, preventing the high-temperature dust-laden gas from directly entering the dust collector and causing the filter element to be damaged by high temperature. At the same time, this utility model sets one end opening of the second branch pipe below the cooling coil and extends part of the cooling coil into the second branch pipe, thereby ensuring that the dust intercepted by the cooling coil can fall smoothly into the second branch pipe and finally be discharged into the ash hopper, preventing dust accumulation and blockage, and ensuring the stability and cooling effect of this utility model. Attached Figure Description

[0013] Figure 1 This is a perspective view of the high-temperature ventilator for the bag filter of this utility model.

[0014] Figure 2 This is a front view of the high-temperature ventilator for a bag filter according to this utility model.

[0015] Figure 3 yes Figure 2 Sectional view along the middle AA.

[0016] The components in the attached diagram are labeled as follows: 10, bag filter; 11, ash hopper; 12, dust collection box; 13, filter element; 14, air inlet; 15, air outlet; 20, air inlet pipe body; 21, main pipe; 22, first branch pipe; 23, second branch pipe; 24, cooling coil. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] Please see Figure 1 , Figure 3 This utility model provides a high-temperature venting device for a bag filter dust collector, which is installed on a bag filter dust collector 10. The bag filter dust collector 10 includes a dust hopper 11 and a dust collection box 12 disposed above the dust hopper 11. The dust collection box 12 is provided with a filter element 13. The dust hopper 11 is provided with an air inlet 14 and the dust collection box 12 is provided with an air outlet 15. In use, high-temperature dust-laden gas is introduced into the dust hopper 11 through the air inlet 14, filtered by the dust collection box 12, and finally discharged from the air outlet 15, thus completing the filtration.

[0019] Please see Figure 2 , Figure 3 The high-temperature ventilation device for the bag filter includes an inlet pipe body 20, which is a pipe body in the shape of Y. The inlet pipe body 20 is installed on the ash hopper 11 of the bag filter 10 and connected to the inlet port 14. The high-temperature dust-laden gas is introduced into the ash hopper 11 from the inlet pipe body 20.

[0020] Furthermore, the intake pipe body 20 is provided with a main pipe 21, a first branch pipe 22 and a second branch pipe 23. The main pipe 21 is horizontally arranged. The first branch pipe 22 is coaxially arranged with the main pipe 21 and connected to the ash hopper 11. One end of the first branch pipe 22 is connected to the air inlet 14 and the other end of the first branch pipe 22 is connected to the main pipe 21. One end of the second branch pipe 23 is set on the main pipe 21 and connected to it. The other end of the second branch pipe 23 is set on the ash hopper 11 and connected to it.

[0021] The inner wall of the main pipe 21 is equipped with a cooling coil 24, through which cooling water, including but not limited to water, flows. Part of the cooling coil 24 is located within the main pipe 21, and the other part extends into the second branch pipe 23. The cooling coil 24 is directly opposite the first branch pipe 22. In use, after the high-temperature dust-laden gas enters the main pipe 21, it first passes through the cooling coil 24 to cool the gas. The cooled gas then flows from the first branch pipe 22 into the ash hopper 11 to further reduce its temperature and ensure the subsequent dust collection box 1... To ensure the stability of the filter element 13 in the main pipe 21, some dust particles in the high-temperature dusty gas are intercepted on the cooling coil 24 when passing through it. In order to ensure the cooling effect and prevent dust from accumulating in the main pipe 21, this utility model sets one end opening of the second branch pipe 23 below the cooling coil 24 and extends part of the cooling coil 24 into the second branch pipe 23. This ensures that the dust intercepted by the cooling coil 24 can fall smoothly into the second branch pipe 23 and finally be discharged into the ash hopper 11, thus ensuring the stability of use and the cooling effect.

[0022] This invention achieves cooling of high-temperature dust-laden gas by setting a Y-shaped air intake pipe 20 and installing a cooling coil 24 inside the air intake pipe 20, thereby preventing the high-temperature dust-laden gas from being directly introduced into the dust collector 12 and causing the filter element 13 to be damaged by high temperature.

[0023] In this embodiment, the diameter of the first branch pipe 22 is smaller than that of the main pipe 21, which increases the gas velocity in the first branch pipe 22 and ensures that the gas intercepted in the main pipe 21 can smoothly enter the first branch pipe 22 at a relatively high speed, preventing dust from accumulating in the first branch pipe 22 and ensuring operational stability.

[0024] In this embodiment, the second branch pipe 22 is located below the main pipe 21 and is inclined. The angle between the axis of the second branch pipe 22 and the axis of the first branch pipe 22 is greater than 30°. This ensures that the dust intercepted by the cooling coil 24 can smoothly enter the ash hopper 11 after entering the second branch pipe 22, preventing dust accumulation. At the same time, the cooling coil 24 achieves the first filtration of the high-temperature dust-laden gas, adding a filtration process and improving the stability and filtration effect.

[0025] In this embodiment, the first branch pipe 22 and the second branch pipe 23 are also provided with a one-way valve (not shown in the figure) to ensure that gas or dust can be smoothly introduced into the ash hopper 11 from the first branch pipe 22 and the second branch pipe 23 and to guide the dust in the ash hopper 11, thus ensuring the stability of the present invention in use.

[0026] The specific operation method of this utility model is as follows: the high-temperature dust-laden gas is introduced into the main pipe 21, and the high-temperature dust-laden gas is first cooled by the cooling coil 24. The cooled gas is then introduced into the ash hopper 11 from the first branch pipe 22. When the dust in the high-temperature dust-laden gas passes through the cooling coil 24, some dust particles are intercepted on the cooling coil 24 and fall into the second branch pipe 23, and finally discharged into the ash hopper 11, thus completing the cooling of the high-temperature dust-laden gas.

[0027] This invention achieves cooling of high-temperature dust-laden gas by setting a Y-shaped air intake pipe 20 and installing a cooling coil 24 inside the air intake pipe 20. This prevents the high-temperature dust-laden gas from directly entering the dust collector 12, which could cause the filter element 13 to be damaged by high temperature. At the same time, this invention sets one end opening of the second branch pipe 23 below the cooling coil 24 and extends part of the cooling coil 24 into the second branch pipe 23. This ensures that the dust intercepted by the cooling coil 24 can fall smoothly into the second branch pipe 23 and finally be discharged into the ash hopper 11, preventing dust accumulation and blockage, and ensuring the stability and cooling effect of this invention.

[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A high-temperature venting device for a bag filter, used for installation on a bag filter (10), the bag filter (10) comprising a dust hopper (11) and a dust collection box (12) disposed above the dust hopper (11), the dust collection box (12) being provided with a filter element (13), the dust hopper (11) being provided with an air inlet (14), and the dust collection box (12) being provided with an air outlet (15), characterized in that, The high-temperature venting device for the bag filter includes an inlet pipe (20), which is a pipe in the shape of a Y. The inlet pipe (20) is installed on the ash hopper (11) of the bag filter (10) and connected to the inlet (14). A cooling coil (24) is provided inside the inlet pipe (20). The inlet pipe (20) is provided with a main pipe (21), a first branch pipe (22), and a second branch pipe (23). The cooling coil (24) is installed in the main pipe (21). On the inner wall of the main pipe (21), cooling water is provided in the cooling coil (24). Part of the cooling coil (24) is located in the main pipe (21), and the other part of the cooling coil (24) extends into the second branch pipe (23). The cooling coil (24) is directly opposite the first branch pipe (22). The first branch pipe (22) is connected to the ash hopper (11). The second branch pipe (23) is located below the first branch pipe (22) and is inclined. The second branch pipe (23) is connected to the ash hopper (11).

2. The high-temperature ventilated device for a bag filter according to claim 1, characterized in that, The first branch pipe (22) is coaxially arranged with the main pipe (21) and connected to the ash hopper (11). One end of the first branch pipe (22) is connected to the air inlet (14), and the other end of the first branch pipe (22) is connected to the main pipe (21).

3. The high-temperature ventilation device for a bag filter according to claim 2, characterized in that, The main pipe (21) is set horizontally, one end of the second branch pipe (23) is set on the main pipe (21) and connected to each other, and the other end of the second branch pipe (23) is set on the ash hopper (11) and connected to each other.

4. The high-temperature ventilation device for a bag filter according to claim 1, characterized in that, The angle between the axis of the second branch pipe (22) and the axis of the first branch pipe (22) is greater than 30°.

5. The high-temperature ventilation device for a bag filter according to claim 1, characterized in that, The diameter of the first branch pipe (22) is smaller than the diameter of the main pipe (21).

6. The high-temperature ventilation device for a bag filter according to claim 1, characterized in that, One-way valves are provided in the first branch pipe (22) and the second branch pipe (23).

7. The high-temperature ventilator for a bag filter according to claim 1, characterized in that, The cooling water is water.

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