Flue gas waste heat recovery device

Abstract

The utility model discloses a flue gas waste heat recovery device, which belongs to the technical field of waste heat recovery equipment and is characterized by comprising a flue gas heat exchanger body, a gas inlet of the flue gas heat exchanger body is communicated with a filter box, a box cover is arranged at the top of the filter box, and a filter component is arranged on the left side of an inner cavity of the filter box. The waste heat recovery device solves the problems that in the using process of an existing waste heat recovery device, due to the fact that particle impurities are contained in smoke and enter the waste heat recovery device, heat exchange efficiency is affected, cleaning is troublesome, although part of the waste heat recovery device is provided with a filtering structure, a single-layer filtering structure is usually adopted, the filtering effect is not ideal enough, and waste heat is wasted. The problems that in the prior art, a filter structure cannot be detached for deep cleaning or replacement, and harmful gas and peculiar smell in smoke cannot be filtered and absorbed, so that the smoke is directly discharged after heat exchange, air pollution is caused, and an existing filter structure is inconvenient to detach for deep cleaning or replacement, and use is not facilitated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery equipment, in particular to a flue gas waste heat recovery device. Background Art

[0002] Waste heat recovery refers to the technology and process of recovering and reusing the heat energy contained in waste gas, waste heat, waste water and other media with a certain temperature and heat generated in the industrial production process. Many industrial production processes will produce a large amount of high-temperature flue gas, such as thermal power generation, steel smelting, cement production, glass manufacturing and other industries. These flue gases usually have a high temperature and contain a large amount of heat energy.

[0003] High-temperature flue gas contains a large amount of heat. If this heat is not recovered, it will dissipate in the air, resulting in a waste of resources.

[0004] The existing patent (publication number: CN217382995U) This utility model relates to the field of waste heat recovery technology, specifically a flue gas waste heat recovery device, including a recovery structure, a storage structure is provided on the top of the recovery structure; the recovery structure includes a recovery cover, a connecting seat and a display screen, the top of the recovery cover is provided with a connecting seat, and a display screen is provided on the outside of the connecting seat; the storage structure includes a heat storage tank, a heat pipe and a sealing cover, and several heat pipes are provided around the bottom of the outer surface of the heat storage tank, and the top of the heat storage tank is provided with a sealing cover. The device has a simple structure, is easy to use and has high practicality.

[0005] In response to the above problems, the existing patent provides a solution. During the use of the existing waste heat recovery device, since the flue gas contains particulate impurities, the particulate impurities will affect the heat exchange efficiency after entering the waste heat recovery device, and it is troublesome to clean. Although some waste heat recovery devices are equipped with a filtering structure, it is usually a single-layer filtering structure, and the filtering effect is not ideal. It is also unable to filter and absorb harmful gases and odors in the flue gas, so that the direct discharge of the flue gas after heat exchange will cause air pollution. In addition, it is not convenient to disassemble the filtering structure for deep cleaning or replacement, which is not conducive to use.

[0006] Therefore, a flue gas waste heat recovery device is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a flue gas waste heat recovery device, which can solve the problem that during the use of the existing waste heat recovery device, the flue gas contains particulate impurities, and the particulate impurities enter the waste heat recovery device, affecting the heat exchange efficiency and making cleaning more troublesome. Although some waste heat recovery devices are equipped with a filtering structure, it is usually a single-layer filtering structure, the filtering effect is not ideal, and it is unable to filter and absorb harmful gases and odors in the flue gas, so that the direct discharge of the flue gas after heat exchange will cause air pollution, and the existing filter structure is not convenient to disassemble for deep cleaning or replacement, which is not conducive to use.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a flue gas waste heat recovery device, comprising a flue gas heat exchanger body, an air inlet of the flue gas heat exchanger body being connected to a filter box, a box cover being provided on the top of the filter box, a filter assembly being provided on the left side of the inner cavity of the filter box, and a cleaning assembly being provided in the inner cavity of the filter box for use in conjunction with the filter assembly;

[0009] The filter assembly includes a fixed frame, a first filter screen is fixedly connected to the right side of the inner cavity of the fixed frame, an ultrafine filter screen is fixedly connected to the left side of the inner cavity of the fixed frame, and a honeycomb activated carbon plate is fixedly connected to the inner cavity of the fixed frame.

[0010] Preferably, the cleaning assembly includes an electric telescopic rod, the right side of the electric telescopic rod is fixedly connected to the left side of the filter box, and the output end of the electric telescopic rod passes through the inner cavity of the filter box and is fixedly connected to a fixing plate.

[0011] Preferably, a cleaning brush is fixedly connected to the rear side of the fixing plate, and the rear side of the cleaning brush is in close contact with the front side of the first filter screen.

[0012] Preferably, the top and bottom of the electric telescopic rod output rod are provided with limit rods used in conjunction with the fixed plate, the left side of the limit rod is fixedly connected to the left side of the inner wall of the filter box, the right side of the limit rod passes through the fixed plate and is fixedly connected to the right side of the inner wall of the filter box, and the inner wall of the fixed plate is slidably connected to the surface of the limit rod.

[0013] Preferably, both sides of the fixed frame are fixedly connected with limiting slides, and both sides of the inner wall of the filter box are provided with limiting slides for use with the limiting slides, and the side of the limiting slide close to the inner wall of the limiting slide is slidably connected to the inner wall of the limiting slide.

[0014] Preferably, a handle is fixedly connected to the top of the front side of the fixing frame, and the surface of the handle is provided with anti-slip textures.

[0015] Preferably, the rear side of the box cover is rotatably connected to the top of the rear side of the filter box via a rotating shaft, and the front side of the box cover is snap-connected to the front side of the filter box via a latch.

[0016] Preferably, a sealing gasket is fixedly connected around the bottom of the box cover, and the bottom of the sealing gasket is in close contact with the four sides of the top of the filter box.

[0017] Preferably, the front side of the bottom of the filter box is connected to a dust collecting hopper, the bottom of the dust collecting hopper is connected to a discharge pipe, and the bottom of the surface of the discharge pipe is connected to a sealing cover through a thread.

[0018] Preferably, the front side of the filter box is connected to an air intake pipe, and the front side of the surface of the air intake pipe is fixedly connected to a flange.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This application can filter out particulate impurities in the flue gas through the setting of the filter component, and can perform multiple filtration on the particulate impurities, thereby improving the filtering effect, and can filter and absorb harmful gases and odors in the flue gas, thereby reducing pollution to the environment and damage to the flue gas heat exchanger body. In addition, by opening the box cover, the filter component can be removed from the filter box for deep cleaning or replacement, which is relatively convenient;

[0021] 2. This application can clean the particulate impurities filtered by the filter component by setting up the cleaning component, and can prevent the filter component from being blocked and affecting the flow of smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the overall structural diagram of the flue gas waste heat recovery device of the present utility model;

[0023] Figure 2 This is a structural diagram from another perspective after the filter box and the box cover are opened in the utility model;

[0024] Figure 3 This is a disassembled structural diagram of the filter assembly in the present utility model;

[0025] Figure 4 This is a structural diagram of the cleaning component in the present utility model;

[0026] Figure 5 This is a top view of the structure of the filter box, filter assembly and cleaning assembly after being disassembled in the utility model;

[0027] Figure 6 This is a disassembled structural diagram of the sealing cover and the discharge pipe in the utility model.

[0028] In the figure, 1. Flue gas heat exchanger body; 2. Filter box; 3. Box cover; 4. Filter assembly; 401. Fixed frame; 402. First filter; 403. Ultrafine filter; 404. Honeycomb activated carbon plate; 5. Cleaning assembly; 501. Electric telescopic rod; 502. Fixed plate; 503. Cleaning brush; 504. Limit rod; 6. Limit slide; 7. Limit slide; 8. Handle; 9. Sealing gasket; 10. Dust hopper; 11. Discharge pipe; 12. Sealing cover; 13. Inlet pipe; 14. Flange. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-6 , this utility model provides a technical solution:

[0031] A flue gas waste heat recovery device includes a flue gas heat exchanger body 1, an air inlet of the flue gas heat exchanger body 1 is connected to a filter box 2, a box cover 3 is provided on the top of the filter box 2, a filter assembly 4 is provided on the left side of the inner cavity of the filter box 2, and a cleaning assembly 5 used in conjunction with the filter assembly 4 is provided in the inner cavity of the filter box 2;

[0032] The filter assembly 4 includes a fixed frame 401 , a first filter 402 is fixedly connected to the right side of the inner cavity of the fixed frame 401 , an ultrafine filter 403 is fixedly connected to the left side of the inner cavity of the fixed frame 401 , and a honeycomb activated carbon plate 404 is fixedly connected to the inner cavity of the fixed frame 401 .

[0033] In this embodiment: by setting the flue gas heat exchanger body 1, the filter box 2, the box cover 3, the filter component 4 and the cleaning component 5, when in use, the particulate impurities in the flue gas can be filtered through the setting of the filter component 4, and the particulate impurities can be filtered multiple times, which improves the filtering effect, and can filter and absorb harmful gases and odors in the flue gas, thereby reducing pollution to the environment and damage to the flue gas heat exchanger body 1, and by opening the box cover 3, the filter component 4 can be taken out of the filter box 2 and disassembled for deep cleaning or replacement, which is relatively convenient. By setting the cleaning component 5, the particulate impurities filtered by the filter component 4 can be cleaned, which can prevent the filter component 4 from causing blockage and affecting the flue gas circulation.

[0034] Specifically, such as Figure 1 、 Figure 2 、 Figure 4As shown, the cleaning assembly 5 includes an electric telescopic rod 501 , the right side of the electric telescopic rod 501 is fixedly connected to the left side of the filter box 2 , and the output end of the electric telescopic rod 501 passes through the inner cavity of the filter box 2 and is fixedly connected to a fixing plate 502 .

[0035] Specifically, such as Figure 2 、 Figure 4 As shown, a cleaning brush 503 is fixedly connected to the rear side of the fixing plate 502 , and the rear side of the cleaning brush 503 is in close contact with the front side of the first filter 402 .

[0036] Specifically, such as Figure 2 、 Figure 4 As shown, the top and bottom of the output rod of the electric telescopic rod 501 are provided with a limiting rod 504 used in conjunction with the fixing plate 502. The left side of the limiting rod 504 is fixedly connected to the left side of the inner wall of the filter box 2, and the right side of the limiting rod 504 passes through the fixing plate 502 and is fixedly connected to the right side of the inner wall of the filter box 2. The inner wall of the fixing plate 502 is slidably connected to the surface of the limiting rod 504.

[0037] In this embodiment, an electric telescopic rod 501, a fixed plate 502, a cleaning brush 503 and a limit rod 504 are provided. When in use, the electric telescopic rod 501 is activated to extend and retract. The output end of the electric telescopic rod 501 drives the fixed plate 502 to move back and forth, and the fixed plate 502 drives the cleaning brush 503 to move back and forth. The reciprocating movement of the cleaning brush 503 can clean the first filter 402, thereby preventing the first filter 402 from being blocked and affecting the flow of smoke. The provision of the limit rod 504 can improve the stability of the movement of the cleaning brush 503.

[0038] Specifically, such as Figure 3 、 Figure 5 As shown, both sides of the fixed frame 401 are fixedly connected with the limiting slide 6, and both sides of the inner wall of the filter box 2 are provided with a limiting slide 7 for use with the limiting slide 6, and the side of the limiting slide 6 close to the inner wall of the limiting slide 7 is slidably connected to the inner wall of the limiting slide 7.

[0039] Specifically, such as 2, Figure 3 As shown, a handle 8 is fixedly connected to the top of the front side of the fixing frame 401, and the surface of the handle 8 is provided with anti-slip lines.

[0040] In this embodiment, by setting the limiting slide bar 6 and the limiting slide groove 7, the position of the fixed frame 401 can be limited, and the fixed frame 401 can be easily moved up and down. By setting the handle 8, the fixed frame 401 can be easily taken out of the filter box 2.

[0041] Specifically, such as Figure 1 、 Figure 2As shown, the rear side of the box cover 3 is rotatably connected to the top of the rear side of the filter box 2 via a rotating shaft, and the front side of the box cover 3 is snap-fitted to the front side of the filter box 2 via a latch.

[0042] Specifically, such as Figure 1 、 Figure 2 As shown, a sealing gasket 9 is fixedly connected around the bottom of the box cover 3 , and the bottom of the sealing gasket 9 is in close contact with the four sides of the top of the filter box 2 .

[0043] In this embodiment: by arranging the rear side of the box cover 3 and the top of the rear side of the filter box 2 to be rotatably connected by a rotating shaft and the front side of the box cover 3 and the front side of the filter box 2 to be clamped by a latch, the box cover 3 can be easily opened, and by arranging a sealing gasket 9, the connection between the box cover 3 and the filter box 2 can be sealed to prevent smoke leakage.

[0044] Specifically, such as Figure 1 、 Figure 6 As shown, the front side of the bottom of the filter box 2 is connected to a dust collecting hopper 10, the bottom of the dust collecting hopper 10 is connected to a discharge pipe 11, and the bottom of the surface of the discharge pipe 11 is connected to a sealing cover 12 through threads.

[0045] Specifically, such as Figure 1 、 Figure 2 、 Figure 6 As shown, the front side of the filter box 2 is connected to the air intake pipe 13, and the front side of the surface of the air intake pipe 13 is fixedly connected to a flange 14.

[0046] In this embodiment: by providing a dust collecting hopper 10, the filtered impurity particles can be collected, by providing a discharge pipe 11, the collected impurity particles can be conveniently discharged, by providing a sealing cover 12, the discharge pipe 11 can be sealed, by providing an air intake pipe 13, in order to allow the flue gas to enter the filter box 2, by providing a flange 14, in order to facilitate the connection and fixation of the air intake pipe 13 with the pipe of the flue gas source.

[0047] Working principle: When in use, the air intake pipe 13 is connected and fixed to the pipe of the flue gas source through the flange 14, and then the flue gas will enter the filter box 2 through the air intake pipe 13, and then the flue gas will pass through the first filter 402. The first filter 402 can preliminarily filter the larger particulate impurities in the flue gas. Subsequently, the flue gas will pass through the honeycomb activated carbon plate 404. The honeycomb activated carbon plate 404 has a rich pore structure, and its huge specific surface area can absorb odors and some harmful gases in the flue gas, thereby reducing the pollution to the air caused by the flue gas emissions after heat exchange. Then the flue gas will pass through the ultrafine filter 403. The ultrafine filter 403 can further filter even finer particles, thereby effectively improving the filtering effect through multiple filtration of the flue gas, thereby reducing pollution to the environment and damage to the flue gas heat exchanger body 1. During the filtering process, as time goes by, a large amount of particulate impurities will adhere to the first filter 402, which can be removed by starting the electric telescopic The rod 501 makes the electric telescopic rod 501 telescopic output, and the output end of the electric telescopic rod 501 drives the fixed plate 502 to move back and forth, and the fixed plate 502 drives the cleaning brush 503 to move back and forth, and the reciprocating movement of the cleaning brush 503 can clean the first filter 402, and the cleaned particulate impurities will fall into the dust collecting hopper 10 for collection. When it is necessary to clean the impurities in the dust collecting hopper 10, the sealing cover 12 on the discharge pipe 11 can be opened to discharge the impurities through the discharge pipe 11, and the box cover 3 can be opened, and then the fixed frame 401 can be directly taken out from the filter box 2 by pulling the handle 8, so that the first filter 402, the honeycomb activated carbon plate 404 and the ultrafine filter 403 can be deeply cleaned or replaced, which is more convenient. Then the filtered and purified flue gas enters the flue gas heat exchanger body 1 through the connecting port between the filter box 2 and the flue gas heat exchanger body 1, and the flue gas heat is transferred to other media in the flue gas heat exchanger body 1, thereby realizing waste heat recovery.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flue gas waste heat recovery device, comprising a flue gas heat exchanger body (1), characterized in that: The air inlet of the flue gas heat exchanger body (1) is connected to a filter box (2), a box cover (3) is provided on the top of the filter box (2), a filter assembly (4) is provided on the left side of the inner cavity of the filter box (2), and a cleaning assembly (5) used in conjunction with the filter assembly (4) is provided in the inner cavity of the filter box (2); The filter assembly (4) comprises a fixed frame (401), a first filter screen (402) is fixedly connected to the right side of the inner cavity of the fixed frame (401), an ultrafine filter screen (403) is fixedly connected to the left side of the inner cavity of the fixed frame (401), and a honeycomb activated carbon plate (404) is fixedly connected to the inner cavity of the fixed frame (401).

2. The flue gas waste heat recovery device according to claim 1, characterized in that: The cleaning assembly (5) comprises an electric telescopic rod (501), the right side of the electric telescopic rod (501) being fixedly connected to the left side of the filter box (2), and the output end of the electric telescopic rod (501) passing through the inner cavity of the filter box (2) and being fixedly connected to a fixing plate (502).

3. The flue gas waste heat recovery device according to claim 2, characterized in that: A cleaning brush (503) is fixedly connected to the rear side of the fixed plate (502), and the rear side of the cleaning brush (503) is in close contact with the front side of the first filter screen (402).

4. The flue gas waste heat recovery device according to claim 2, characterized in that: The top and bottom of the output rod of the electric telescopic rod (501) are both provided with a limiting rod (504) for use with the fixing plate (502); the left side of the limiting rod (504) is fixedly connected to the left side of the inner wall of the filter box (2); the right side of the limiting rod (504) passes through the fixing plate (502) and is fixedly connected to the right side of the inner wall of the filter box (2); the inner wall of the fixing plate (502) is slidably connected to the surface of the limiting rod (504).

5. The flue gas waste heat recovery device according to claim 1, characterized in that: Both sides of the fixed frame (401) are fixedly connected to the limiting slide bar (6), and both sides of the inner wall of the filter box (2) are provided with a limiting slide groove (7) used in conjunction with the limiting slide bar (6), and the side of the limiting slide bar (6) close to the inner wall of the limiting slide groove (7) is slidably connected to the inner wall of the limiting slide groove (7).

6. The flue gas waste heat recovery device according to claim 1, characterized in that: A handle (8) is fixedly connected to the top of the front side of the fixing frame (401), and the surface of the handle (8) is provided with anti-slip lines.

7. The flue gas waste heat recovery device according to claim 1, characterized in that: The rear side of the box cover (3) is rotatably connected to the top of the rear side of the filter box (2) via a rotating shaft, and the front side of the box cover (3) is snap-connected to the front side of the filter box (2) via a locking buckle.

8. The flue gas waste heat recovery device according to claim 1, characterized in that: The bottom of the box cover (3) is fixedly connected with a sealing gasket (9) around the periphery, and the bottom of the sealing gasket (9) is in close contact with the periphery of the top of the filter box (2).

9. The flue gas waste heat recovery device according to claim 1, characterized in that: The front side of the bottom of the filter box (2) is connected to a dust collecting hopper (10), the bottom of the dust collecting hopper (10) is connected to a discharge pipe (11), and the bottom of the surface of the discharge pipe (11) is connected to a sealing cover (12) through a thread.

10. The flue gas waste heat recovery device according to claim 1, characterized in that: The front side of the filter box (2) is connected to an air intake pipe (13), and the front side of the surface of the air intake pipe (13) is fixedly connected to a flange (14).

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