Cooling structure for air inlet of bag-type dust collector
By designing the cooling structure at the air inlet of the bag dust collector and using the heat exchange pipe to exchange heat with the high-temperature flue gas, the problem of shortening the life of the bag dust collector at high temperature is solved, and the cooling effect and economic benefits are improved.
Patent Information
- Application Number
- CN202422437749.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The service life of bag dust collectors is shortened in high-temperature flue gas environments, making it difficult for the existing technology to effectively cool and improve economic benefits.
A bag dust collector air inlet cooling structure is designed, including a box, water inlet pipe, water outlet pipe and heat exchange structure, heat exchange with high-temperature flue gas through heat exchange pipes, cools the flue gas and generates hot water, which is an auxiliary economic product.
Effectively avoid the damage to the cloth bag by high temperature, improve the service life of the dust collector, and generate hot water, which improves economic benefits.
Smart Images
Figure CN223144386U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas dust removal equipment, in particular to a cooling structure for the air inlet of a bag filter. Background Technique
[0002] The dust removal principle of the bag filter initially relies on inertial collision, diffusion, interception, and static electricity to form a primary dust layer, and then filters and removes dust by the sieving action of the primary dust layer. During ash cleaning, it relies on the gravity sedimentation effect to make the ash cake settle into the ash hopper to achieve the purpose of gas purification. During filtration, the dust-containing gas enters from the lower part and is filtered by the outer surface of the filter bag. The purified air flow enters the interior of the filter bag and converges into the clean air chamber at the upper part for discharge. When the pressure loss of the filter bag continuously increases with the deposition of dust and reaches a predetermined value, the pulse valve works, and backwashing is carried out through pulse air pressure. The filter bag expands outward to shake off the dust. There is a partition in the bag filter, and a plurality of filter holes are arranged in an array on the partition for installing filter bags. The size of the filter bag is generally 500 mm in length and 200 mm in diameter, forming a plurality of small filter units. The lower part of the partition is connected to the intake pipe, and the upper part is connected to the outlet pipe. The filter bag is made of cloth or felt woven from synthetic fiber, natural fiber, or glass fiber, and filters the tail gas after the combustion of the coal stove to intercept dust, etc.
[0003] Filtration is carried out with filter bags, and some filtered flue gases not only have heavy dust but also are accompanied by high temperatures. For example, in an incinerator using coal combustion as a heat source, the temperature of the flue gas can reach 120 °C. As a primary filtration unit, the filter bags of the bag filter are prone to a significant reduction in lifespan under long-term exposure to high temperatures. Content of the Utility Model
[0004] The purpose of the utility model is to provide a cooling structure for the air inlet of a bag filter to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A cooling structure for the air inlet of a bag filter, including a dust collector body and a cooling component. An intake pipe is arranged on the side end of the dust collector body, and one end of the intake pipe is connected to the cooling component through a flange. The cooling component includes a box body, a water inlet pipe, a water outlet pipe, and a heat exchange structure. The interior of the box body is hollow. A conical air outlet is arranged on the side of the box body close to the intake pipe, and the side opposite to the air outlet of the box body is set as the air inlet. A plurality of long strip-shaped slots are arranged at equal intervals in an array at the bottom of the box body, and the heat exchange structure is installed in the slots. The top of the box body is fixedly installed with a water inlet pipe and a water outlet pipe. The heat exchange structure includes an installation frame and a heat exchange pipe. The installation frame is integrally in a "U" shape. A rectangular through hole is arranged on the vertical section of one side of the installation frame. The heat exchange pipe is fixedly arranged on the installation frame, and the openings at both ends of the heat exchange pipe are both upward. The openings at both ends of the heat exchange pipe are the liquid outlet end and the liquid inlet end, and the liquid inlet end is arranged close to one side of the through hole.
[0006] Preferably, two opposite side surfaces of the box body are fixedly provided with detachable sealed side plates through bolts.
[0007] Preferably, the shape and size of the slot are the same as those of the bottom surface of the installation frame.
[0008] Preferably, the whole heat exchange tube is bent and wound in an "S" shape.
[0009] Preferably, the liquid outlet end is connected to a water outlet pipe, and the liquid inlet end is connected to a water inlet pipe.
[0010] Preferably, a plurality of heat exchange structures are arranged at intervals in the box body along the flowing direction of the high-temperature flue gas.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: by arranging the box body and the heat exchange structure, and allowing water to flow through the heat exchange structure, on the one hand, the high-temperature flue gas passing through the box body can be cooled, avoiding damage to the cloth bag caused by high temperature; on the other hand, hot water is generated through heat exchange, which belongs to the generation of subsidiary economic products and improves economic benefits. By arranging the detachable heat exchange structure, the installation frame of the heat exchange structure is fixed through the slot in the box body, and detachable sealed side plates are arranged at both ends of the box body. After long-term use, the heat exchange structure can be cleaned to prevent dust in the flue gas from accumulating on the outer wall of the heat exchange tube and reducing the heat exchange efficiency between the water body in the heat exchange tube and the high-temperature flue gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic structural diagram of the whole of the present utility model;
[0013] Figure 2 is a schematic structural diagram of the novel part cooling component of the present utility model;
[0014] Figure 3 is a schematic structural diagram of the part box body of the present utility model;
[0015] Figure 4 is a schematic structural diagram of the part heat exchange structure of the present utility model.
[0016] In the figure: 1. Dust collector body; 2. Air inlet pipe; 3. Flange; 4. Box body; 41. Air outlet; 42. Air inlet; 43. Sealed side plate; 44. Slot; 5. Water inlet pipe; 6. Water outlet pipe; 7. Heat exchange structure; 71. Installation frame; 711. Through hole; 72. Heat exchange tube; 721. Liquid outlet end; 722. Liquid inlet end. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0019] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: a cooling structure for the air inlet of a bag filter, including a dust collector body 1 and a cooling component. An air inlet pipe 2 is provided at the side end of the dust collector body 1. One end of the air inlet pipe 2 is connected to the cooling component through a flange 3. The cooling component includes a box body 4, a water inlet pipe 5, a water outlet pipe 6 and a heat exchange structure 7. The inside of the box body 4 is hollow. A conical air outlet 41 is provided on the side of the box body 4 close to the air inlet pipe 2. The side of the box body 4 opposite to the air outlet 41 is set as an air inlet 42. Long strip-shaped slots 44 are arranged at equal intervals in an array at the bottom of the box body 4. The heat exchange structure 7 is installed in the slots 44. The water inlet pipe 5 and the water outlet pipe 6 are fixedly installed at the top of the box body 4. The heat exchange structure 7 includes an installation frame 71 and heat exchange tubes 72. The installation frame 71 is integrally in a "U" shape. A rectangular through hole 711 is provided on the vertical section of one side of the installation frame 71. The heat exchange tubes 72 are fixedly arranged on the installation frame 71. The openings at both ends of the heat exchange tubes 72 are both upward. The openings at both ends of the heat exchange tubes 72 are a liquid outlet end 721 and a liquid inlet end 722. The liquid inlet end 722 is arranged on the side close to the through hole 711.
[0021] Furthermore, the opposite side surfaces of the box body 4 are fixedly and detachably sealed by bolted side plates 43.
[0022] Further, the shape and size of the slot 44 are the same as those of the bottom surface of the mounting frame 71.
[0023] Further, the heat exchange tube 72 is integrally bent in an "S" shape, further improving the heat exchange performance of the heat exchange structure 7.
[0024] Further, the liquid outlet end 721 is connected to the water outlet pipe 6, and the liquid inlet end 722 is connected to the water inlet pipe 5.
[0025] Further, a plurality of the heat exchange structures 7 are arranged at intervals in the box body 4 along the flowing direction of the high-temperature flue gas.
[0026] Working principle: The utility model provides a cooling structure for the air inlet of a bag filter, which comprises a dust collector body 1 and a cooling assembly. A gas inlet pipe 2 is arranged at the side end of the dust collector body 1. One end of the gas inlet pipe 2 is connected to the cooling assembly through a flange 3. The cooling assembly comprises a box body 4, a water inlet pipe 5, a water outlet pipe 6 and a heat exchange structure 7. The interior of the box body 4 is hollow. A conical air outlet 41 is arranged on the side surface of the box body 4 close to the gas inlet pipe 2. The side surface of the box body 4 opposite to the air outlet 41 is set as an air inlet 42. Long strip-shaped slots 44 are arranged at equal intervals in an array at the bottom of the box body 4. The heat exchange structure 7 is installed in the slots 44. The water inlet pipe 5 and the water outlet pipe 6 are fixedly installed at the top end of the box body 4. The heat exchange structure 7 comprises a mounting frame 71 and a heat exchange tube 72. The mounting frame 71 is integrally in a "U" shape. A rectangular through hole 711 is arranged on the vertical section of one side of the mounting frame 71. The heat exchange tube 72 is fixedly arranged on the mounting frame 71. The openings at both ends of the heat exchange tube 72 are arranged upward. The openings at both ends of the heat exchange tube 72 are the liquid outlet end 721 and the liquid inlet end 722. The liquid inlet end 722 is arranged on the side close to the through hole 711. When in specific use, the high-temperature flue gas enters the cooling assembly from the air inlet 42 of the box body 4. The high-temperature flue gas flows in the box body 4, and the heat exchange structure 7 in the box body 4 cools the high-temperature flue gas. The heat exchange tube 72 of the heat exchange structure 7 is connected to the water inlet pipe 5 and the water outlet pipe 6. When in operation, a water source is connected into the water inlet pipe 5. The water body enters the heat exchange tube 72 from the water inlet pipe 5, exchanges heat with the high-temperature flue gas in the heat exchange tube 72, and the water body absorbing heat enters the water outlet pipe 6 and is collected for use.
[0027] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A cooling structure for the air inlet of a bag filter, characterized in that: It includes a dust collector body (1) and a cooling component. An air inlet pipe (2) is provided at the side end of the dust collector body (1). One end of the air inlet pipe (2) is connected to the cooling component through a flange (3). The cooling component includes a box body (4), a water inlet pipe (5), a water outlet pipe (6) and a heat exchange structure (7). The interior of the box body (4) is hollow. A conical air outlet (41) is provided on the side surface of the box body (4) close to the air inlet pipe (2). The side surface opposite to the air outlet (41) of the box body (4) is set as an air inlet (42). Long strip-shaped slots (44) are arranged at equal intervals in an array at the bottom of the box body (4). The heat exchange structure (7) is installed in the slots (44). The water inlet pipe (5) and the water outlet pipe (6) are fixedly installed at the top of the box body (4). The heat exchange structure (7) includes a mounting frame (71) and heat exchange tubes (72). The mounting frame (71) is generally in a "U" shape. A rectangular through hole (711) is provided on the vertical section of one side of the mounting frame (71). The heat exchange tubes (72) are fixedly arranged on the mounting frame (71). The openings at both ends of the heat exchange tubes (72) are both upward. The openings at both ends of the heat exchange tubes (72) are a liquid outlet end (721) and a liquid inlet end (722). The liquid inlet end (722) is arranged on the side close to the through hole (711).
2. The inlet air cooling structure of a bag filter according to claim 1, wherein: Sealing side plates (43) that are detachably fixed by bolts are provided on the opposite side surfaces of the box body (4).
3. The cooling structure for the air inlet of a bag filter according to claim 1, characterized in that: The shape and size of the slots (44) are the same as those of the bottom surface of the mounting frame (71).
4. A cooling structure for the air inlet of a bag filter according to claim 1, characterized in that: The heat exchange tubes (72) are bent and wound in an "S" shape as a whole.
5. The cooling structure for the air inlet of a bag filter according to claim 1, characterized in that: The liquid outlet end (721) is connected to the water outlet pipe (6), and the liquid inlet end (722) is connected to the water inlet pipe (5).
6. The cooling structure for the air inlet of a bag filter according to claim 1, characterized in that: A plurality of the heat exchange structures (7) are arranged at intervals in the box body (4) along the flowing direction of the high-temperature flue gas.