Industrial waste heat recycling device

Abstract

The utility model relates to the technical field of industrial waste heat recycling and reusing devices, and solves the problems that the single-stage filtering capacity is insufficient when a metal color filter element is used for filtering; in addition, a magnetic attraction frame is not provided with mechanical locking, steam is likely to be sprayed out when the pressure fluctuates, and the structural reliability is poor. The industrial waste heat recycling device comprises a heat recycling box, a water pipe is connected into the heat recycling box in a sleeved mode, an air inlet pipe is arranged at one end of the heat recycling box, a hot air pipe is arranged at one end of the air inlet pipe, and filtering assemblies are arranged on the surface of the air inlet pipe and the surface of the hot air pipe. The filtering assembly comprises a left side plate and a right side plate which are arranged on the two sides of the joint of the air inlet pipe and the hot air pipe, hinges are fixedly connected to the bottom faces of the left side plate and the right side plate in an axial symmetry mode, and rubber pads are fixedly connected to the inner side walls of the left side plate and the right side plate; the top faces of the left side plate and the right side plate are fixedly connected with connecting plates in an axial symmetry mode, and mounting holes are formed in the side faces of the connecting plates.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial waste heat recovery and reuse devices, specifically an industrial waste heat recovery and reuse device. Background Technology

[0002] The boiler waste heat recovery and reuse device disclosed in CN213021094U includes a hook, a box, a low-temperature steam outlet, a water outlet, a water inlet, a high-temperature steam inlet, a circular heat-conducting plate, a circulating water pipe, a filter element, a heat-conducting plate body, an arc-shaped bayonet, a shell, a metal filter element, and a magnetic frame. Multiple circular heat-conducting plates are snapped onto the circulating water pipe of the boiler waste heat recovery and reuse device, which can greatly increase the contact area between the circulating water pipe and the steam, thereby better absorbing heat. Furthermore, a filter element is installed inside the high-temperature steam inlet of the boiler waste heat recovery and reuse device.

[0003] The magnetic frame makes the installation of the filter element more convenient and quick. The filter element can then adsorb impurities in the boiler steam, which greatly prevents impurities in the boiler steam from entering the interior of the boiler waste heat recovery and reuse device, thus improving the performance of the boiler waste heat recovery and reuse device.

[0004] The technical solution in the patent document has the effect of adsorbing steam impurities, but it relies on a metallic filter element for filtration, which is insufficient for single-stage filtration. In addition, the magnetic frame is not mechanically locked, and it may spray out when the steam pressure fluctuates, resulting in poor structural reliability. This solution does not provide high protection for the furnace tube. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an industrial waste heat recovery and reuse device, which solves the problem of insufficient single-stage filtration capacity due to reliance on metallic filter elements; in addition, the magnetic frame lacks mechanical locking, which may cause steam to spray out when the steam pressure fluctuates, resulting in poor structural reliability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an industrial waste heat recovery and reuse device, comprising a heat recovery box, a water pipe sleeved inside the heat recovery box, an air inlet pipe at one end of the heat recovery box, a hot air pipe at one end of the air inlet pipe, and a filter assembly on the surface of the air inlet pipe and the hot air pipe.

[0007] The filter assembly includes a left side plate and a right side plate disposed on both sides of the connection between the air inlet pipe and the hot air pipe. The bottom surfaces of the left side plate and the right side plate are fixedly connected with hinges in an axisymmetric manner. The inner side walls of the left side plate and the right side plate are fixedly connected with rubber pads. The top surfaces of the left side plate and the right side plate are fixedly connected with connecting plates in an axisymmetric manner. The side of the connecting plate is provided with mounting holes. Bolts are fitted inside the mounting holes. One end of the bolts is threaded with a nut. The interior of the left side plate and the right side plate is sequentially provided with metal fiber felt, ceramic fiber layer and glass fiber layer.

[0008] In one specific embodiment, the left and right side plates form an openable structure via hinges, and the connecting plates are locked by the cooperation of bolts and nuts.

[0009] In one specific embodiment, the metal fiber felt, ceramic fiber layer and glass fiber layer are arranged in a three-layer superimposed structure and are fixedly encapsulated in the inner cavity of the left side plate and the right side plate.

[0010] In one specific embodiment, the rubber pad surrounds and covers the connection end face of the air intake pipe and the hot air pipe to form an airtight contact surface.

[0011] In one specific embodiment, the metal fiber felt of the filter assembly is located on the outermost side in the air intake direction, the ceramic fiber layer is located in the middle layer, and the glass fiber layer is located on the innermost side.

[0012] In one specific embodiment, after the left and right side plates are closed by rotating the hinges, the rubber gaskets are compressed and sealed, and the bolts are tightened and fixed with nuts after passing through the mounting holes of the connecting plates on both sides.

[0013] Compared with the prior art, this utility model provides an industrial waste heat recovery and reuse device, which has the following beneficial effects:

[0014] In the technical solution disclosed in this utility model, a filter assembly set at the connection between the air inlet pipe and the hot air pipe is used to form a multi-level gradient filter structure with metal fiber felt, ceramic fiber layer and glass fiber layer, which intercepts solid impurities of different particle size ranges in sequence, greatly improving the filtration integrity; at the same time, the left side plate and the right side plate are connected by hinges to form an openable cavity, and after the bolt passes through the mounting hole of the connecting plate, it is locked and fixed with the nut, and the end face is sealed by the compression deformation of the rubber gasket, which completely solves the reliability defects of the magnetic suction structure under high temperature and high pressure conditions.

[0015] The filter assembly of this invention connects the air inlet pipe and the hot air pipe. The left and right side plates, connected by rotating the hinges, close the connection. When closed, the internally encapsulated three-layer structure—metal fiber felt, ceramic fiber layer, and glass fiber layer—completely covers the airflow channel at the connection point. At this time, the rubber pad deforms under pressure and adheres tightly to the end faces of the air inlet pipe and the hot air pipe. Then, bolts are passed through the mounting holes on both side connecting plates, and nuts are tightened to form a mechanical locking seal. High-temperature, dust-laden gas enters through the air inlet pipe and sequentially passes through the metal fiber felt to intercept large particles, the ceramic fiber layer to withstand high-temperature corrosion and filter medium-sized particles, and the glass fiber layer to capture fine dust. The purified gas flows through the hot air pipe into the heat recovery box to heat the water inside the water pipe, achieving a gradient filtration function. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the metal fiber felt, ceramic fiber layer, and glass fiber layer of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0021] In the diagram: 1. Heat recovery box; 2. Water pipe; 3. Air inlet pipe; 4. Hot air pipe; 5. Filter assembly; 51. Left side plate; 52. Right side plate; 53. Hinge; 54. Rubber pad; 55. Connecting plate; 56. Bolt; 57. Nut; 58. Metal fiber felt; 59. Ceramic fiber layer; 510. Glass fiber layer. Detailed Implementation

[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Figures 1-4 As an embodiment of the present invention, an industrial waste heat recovery and reuse device includes a heat recovery box 1, a water pipe 2 is sleeved inside the heat recovery box 1, an air inlet pipe 3 is provided at one end of the heat recovery box 1, a hot air pipe 4 is provided at one end of the air inlet pipe 3, and a filter assembly 5 is provided on the surface of the air inlet pipe 3 and the hot air pipe 4.

[0024] The specific problems addressed in this embodiment are: insufficient single-stage filtration capacity due to reliance on metallic filter elements; and the lack of mechanical locking in the magnetic frame, which could lead to leakage during steam pressure fluctuations and poor structural reliability. This invention utilizes a filter assembly 5 located at the connection between the inlet pipe 3 and the hot air pipe 4. This assembly forms a multi-stage gradient filtration structure using metal fiber felt 58, ceramic fiber layer 59, and glass fiber layer 510 to sequentially intercept solid impurities of different particle sizes, significantly improving filtration integrity. Simultaneously, a hinge 53 connects the left side plate 51 and the right side plate 52 to form an openable cavity. Bolts 56 pass through the mounting holes of the connecting plate 55 and are locked in place by nuts 57. The rubber gasket 54 is compressed and deformed to achieve end-face sealing, completely resolving the reliability defects of the magnetic structure under high temperature and high pressure conditions.

[0025] The filter assembly 5 includes a left side plate 51 and a right side plate 52 located on both sides of the connection between the air inlet pipe 3 and the hot air pipe 4. The bottom surfaces of the left side plate 51 and the right side plate 52 are fixedly connected with hinges 53 in an axisymmetric manner. The inner sidewalls of the left side plate 51 and the right side plate 52 are fixedly connected with rubber pads 54. The top surfaces of the left side plate 51 and the right side plate 52 are fixedly connected with connecting plates 55 in an axisymmetric manner. The side of the connecting plate 55 has a mounting hole, and a bolt 56 is fitted inside the mounting hole. One end of the bolt 56 is threaded with a nut 57. The interior of the left side plate 51 and the right side plate 52 is sequentially provided with a metal fiber felt 58, a ceramic fiber layer 59, and a glass fiber layer 510. In this specific embodiment, the left side plate 51 and the right side plate 52 form an openable structure through the hinges 53, and the connecting plate 55 is locked by the cooperation of the bolts 56 and the nuts 57. After connecting the air inlet pipe 3 and the hot air pipe 4, rotate the hinge 53 to connect the left side plate 51 and the right side plate 52 to close them. When closed, the internally encapsulated three-layer structure of metal fiber felt 58, ceramic fiber layer 59 and glass fiber layer 510 completely covers the airflow channel at the connection. At this time, the rubber pad 54 is deformed by pressure and sticks to the end face of the air inlet pipe 3 and the hot air pipe 4. Then, after the bolt 56 is passed through the mounting holes of the connecting plates 55 on both sides, the nut 57 is tightened to form a mechanical locking seal. After the high temperature dust-laden gas enters from the air inlet pipe 3, it passes through the metal fiber felt 58 to intercept large particles of impurities, the ceramic fiber layer 59 to resist high temperature corrosion and filter medium particles, and the glass fiber layer 510 to capture fine dust. The purified gas flows into the heat recovery box 1 through the hot air pipe 4 to heat the water inside the water pipe 2, realizing the function of gradient filtration.

[0026] In this specific embodiment, the rubber pad 54 surrounds and covers the connection end face of the air inlet pipe 3 and the hot air pipe 4, forming an airtight contact surface. When the left side plate 51 and the right side plate 52 are closed by the hinge 53, the rubber pad 54 is squeezed by the two side plates and surrounds and covers the docking end face of the air inlet pipe 3 and the hot air pipe 4, forming a continuous elastic sealing layer. After the bolt 56 is tightened through the mounting hole of the connecting plate 55, the nut 57 applies axial pressure, which further compresses and deforms the rubber pad 54 to fill the end face gap, achieving airtight sealing under high temperature and high pressure, and completely replacing the unstable sealing method of magnetic attraction structure that relies on magnetic force.

[0027] In this specific embodiment, the metal fiber felt 58 of the filter assembly 5 is located on the outermost side in the air intake direction, the ceramic fiber layer 59 is located in the middle layer, and the glass fiber layer 510 is located on the innermost side. After the high-temperature dusty gas enters the filter assembly 5, the outermost metal fiber felt 58 first intercepts large particles and sparks, the middle ceramic fiber layer 59 captures particles of equal size at extreme temperatures and resists chemical corrosion, and finally the innermost glass fiber layer 510 efficiently filters ultrafine dust. This gradient sequence is achieved through the three-layer fixed encapsulation structure of the inner cavity of the left side plate 51 and the right side plate 52, ensuring that the metal fiber felt 58 preferentially withstands impact, the ceramic fiber layer 59 provides transitional protection, and the glass fiber layer 510 provides precise purification, greatly improving the system life.

[0028] Working principle: High-temperature dusty gas enters the filter assembly 5 through the inlet pipe 3. First, it impacts the metal fiber felt 58 to intercept large particles of impurities. Then, the airflow penetrates the ceramic fiber layer 59 to filter medium particles and withstand high-temperature corrosion. Finally, it enters the hot gas pipe 4 after efficiently capturing fine dust through the glass fiber layer 510. The purified gas fully contacts and exchanges heat with the copper water pipe 2 in the heat recovery box 1. Water flows in from the inlet of the water pipe 2, absorbs heat, and is heated before being output from the outlet. During the operation of the filter assembly 5, the left side plate 51 and the right side plate 52 are connected by the hinge 53 to form a cavity covering the connection. The bolt 56 is tightened through the connecting plate 55 and locked with the nut 57 to compress and seal the end face of the rubber gasket 54, achieving mechanical fastening and airtightness under high-temperature conditions.

[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial waste heat recovery and reuse device, comprising a heat recovery box (1), characterized in that: The heat recovery box (1) is fitted with a water pipe (2), and an air inlet pipe (3) is provided at one end of the heat recovery box (1). A hot air pipe (4) is provided at one end of the air inlet pipe (3). A filter assembly (5) is provided on the surface of the air inlet pipe (3) and the hot air pipe (4). The filter assembly (5) includes a left side plate (51) and a right side plate (52) located on both sides of the connection between the air inlet pipe (3) and the hot air pipe (4). The bottom surfaces of the left side plate (51) and the right side plate (52) are fixedly connected with hinges (53) in an axisymmetric manner. The inner side walls of the left side plate (51) and the right side plate (52) are fixedly connected with rubber pads (54). The top surfaces of the left side plate (51) and the right side plate (52) are fixedly connected with connecting plates (55) in an axisymmetric manner. The side of the connecting plate (55) is provided with mounting holes. Bolts (56) are fitted inside the mounting holes. One end of the bolts (56) is threaded with a nut (57). The interior of the left side plate (51) and the right side plate (52) is sequentially provided with metal fiber felt (58), ceramic fiber layer (59) and glass fiber layer (510).

2. The industrial waste heat recovery and reuse device according to claim 1, characterized in that: The left side plate (51) and the right side plate (52) form an openable structure by means of hinges (53), and the connecting plate (55) is locked by means of bolts (56) and nuts (57).

3. The industrial waste heat recovery and reuse device according to claim 1, characterized in that: The metal fiber felt (58), ceramic fiber layer (59) and glass fiber layer (510) are three-layer superimposed structures and are fixedly encapsulated in the inner cavity of the left side plate (51) and the right side plate (52).

4. The industrial waste heat recovery and reuse device according to claim 1, characterized in that: The rubber pad (54) surrounds and covers the connection end face of the air inlet pipe (3) and the hot air pipe (4) to form an airtight contact surface.

5. The industrial waste heat recovery and reuse device according to claim 1, characterized in that: The metal fiber felt (58) of the filter assembly (5) is located on the outermost side in the air intake direction, the ceramic fiber layer (59) is located in the middle layer, and the glass fiber layer (510) is located on the innermost side.

6. The industrial waste heat recovery and reuse device according to claim 1, characterized in that: After the left side plate (51) and right side plate (52) are closed by rotating the hinge (53), the rubber pad (54) is compressed and sealed, and the bolt (56) is inserted through the mounting hole of the connecting plate (55) on both sides and then locked and fixed with the nut (57).

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