Waste heat recovery device with filtering function

Abstract

The utility model discloses a waste heat recovery device with a filtering function, which relates to the technical field of heat energy utilization and comprises a shell, a cooling device is arranged in the shell, a moving device is arranged in the shell, and a filtering device is arranged on the side edge of the shell. According to the utility model, the filter device is mounted, then flue gas is conveyed into the protective shell through the flue gas inlet, dust in the flue gas is preliminarily filtered through the multiple layers of filter plates, and after the flue gas is filtered for a period of time, the filter device is disassembled and cleaned by screwing off the fixing bolts, so that the dust in the flue gas is removed; the situation that dust is adsorbed on the moving device to affect the heat exchange efficiency due to the fact that the interior of the filtering device is blocked due to long-time work of the filtering device is prevented, water is injected into the water inlet, residual heat in smoke is absorbed when water flow passes through the heat conversion pipe, and then the heated water is discharged through the water outlet; therefore, preheating of water is achieved, and waste of resources is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of thermal energy utilization technology, specifically to a waste heat recovery device with filtration function. Background Technology

[0002] Waste heat recovery devices are installed in the flue gas duct of gas-fired hot water boilers. Through high-efficiency heat exchange components, they recover and utilize the large amount of heat energy carried by flue gas at temperatures reaching 150℃ or even higher, effectively reducing the flue gas temperature to 50-70℃. The recovered heat is used to preheat boiler feedwater and heat domestic water, preventing the waste of heat carried away by the high-temperature flue gas, significantly improving energy efficiency, reducing fuel consumption, and achieving a dual improvement in energy conservation, emission reduction, and economic benefits.

[0003] Patent publication number CN208703951U discloses a waste heat recovery device, including a phase change heat exchanger. The phase change heat exchanger includes an evaporator and a condenser. The evaporator has a first working fluid inlet and a first working fluid outlet, and the condenser has a second working fluid inlet and a second working fluid outlet. The first working fluid outlet and the second working fluid inlet are connected by a pipe, and the second working fluid outlet and the first working fluid inlet are connected by a pipe. The condenser includes a water inlet and a water outlet, and the water outlet is connected to a hot water tank. The evaporator includes a first tube shell, and multiple flue gas tube shells arranged circumferentially are provided inside the first tube shell. A gap for storing the working fluid is provided between the flue gas tube shells and the first tube shell.

[0004] To address the issue of low heat conversion efficiency, existing technologies employ a coaxially arranged inner core rod within the flue gas pipe shell. Multiple heat-conducting parts are positioned between the inner core rod and the flue gas pipe shell, with these parts spaced apart circumferentially along the inner core. However, this approach still results in the filter being difficult to disassemble and clean, leading to filter blockage. Utility Model Content

[0005] The purpose of this invention is to provide a waste heat recovery device with filtration function to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A waste heat recovery device with filtration function includes a housing, a cooling device inside the housing, a moving device inside the housing, and a filtration device on the side of the housing.

[0008] The filter device includes a protective shell, which is disposed on the side of the outer shell. The protective shell has through holes on both sides, and fixing bolts are inserted into the through holes on both sides of the protective shell. The protective shell is fixedly connected to the outer shell by the fixing bolts. A filter plate is fixedly connected inside the protective shell, and a smoke inlet is fixedly connected to the side of the protective shell.

[0009] A further improvement of the present invention is that: the outer shell includes a smoke guide pipe, the smoke guide pipe is disposed on the side of the protective shell, a sealing shell is fixedly connected to the side of the smoke guide pipe, a dust collection drawer is inserted into the bottom of the sealing shell, and a rain cap is fixedly connected to the top of the sealing shell.

[0010] A further improvement of the present invention is that the cooling device includes a slide groove, the slide groove is fixedly connected to the inner wall of the sealing shell, and a fixing plate is slidably connected to the surface of the slide groove.

[0011] A further improvement of this utility model is that: a heat conversion tube is fixedly connected to the surface of the fixed plate, a water outlet is fixedly connected to the top of the heat conversion tube, and a water inlet is fixedly connected to the bottom of the heat conversion tube.

[0012] A further improvement of the present invention is that the moving device includes a sealing door, the sealing door is fixedly connected to the front of the fixing plate, a fixing strip is fixedly connected to the side of the sealing door, a slot is movably connected to the outside of the fixing strip, and the fixing strip is inserted into the inside of the slot.

[0013] A further improvement of this utility model is that: a rack is fixedly connected to the side of the sealing door, the rack is slidably connected to the side of the sealing shell, and a fixing screw is threaded onto the surface of the rack.

[0014] A further improvement of this utility model is that: a gear is provided at the bottom of the rack, the surface of the gear meshes with the surface of the rack, and a turntable is fixedly connected to the axis of the gear.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] 1. This utility model provides a waste heat recovery device with filtration function. It adopts a combination of a protective shell, filter plate, fixing bolts, and flue gas inlet. After the filter device is installed, the flue gas is transported into the interior of the protective shell through the flue gas inlet. The dust in the flue gas is initially filtered by the multi-layer filter plate. After filtering for a period of time, the filter device can be disassembled and cleaned by unscrewing the fixing bolts. This prevents the filter device from becoming clogged due to long-term operation, which would reduce the filtration effect and cause dust to adhere to the moving device, affecting the heat exchange efficiency.

[0017] 2. This utility model provides a waste heat recovery device with filtration function. It adopts the cooperation of a sealed shell, ash collection drawer, rain cap, flue pipe, water inlet, heat conversion pipe, water outlet, fixing plate, and slide. The rain cap can effectively prevent rainwater from entering the device. By injecting water into the water inlet, the water absorbs the residual heat in the flue gas when it flows through the heat conversion pipe. Then, the heated water is discharged through the water outlet, thereby realizing the preheating of water and greatly reducing the waste of resources.

[0018] 3. This utility model provides a waste heat recovery device with a filtration function. It adopts the cooperation of a sealing door, a fixing strip, a slot, a rack, a fixing screw, a gear, and a turntable. By unscrewing the fixing screw and then rotating the turntable, the gear is driven to rotate, and the gear drives the rack to move laterally, thereby removing the sealing door along with the cooling device. This facilitates the cleaning of the cooling device and effectively prevents dust that has not been filtered out by the filtration device from adhering to the surface of the heat conversion tube and affecting the heat exchange efficiency. Since the device only needs to be cleaned periodically, the manual cleaning method saves maintenance costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the waste heat recovery device with filtration function according to this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the outer shell of this utility model;

[0021] Figure 3 This is a schematic diagram of the cooling device of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the mobile device of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the filtration device of this utility model.

[0024] In the diagram: 1. Outer shell; 2. Cooling device; 3. Moving device; 4. Filtering device; 11. Sealing shell; 12. Ash collection drawer; 13. Rain cap; 14. Smoke guide pipe; 21. Water inlet; 22. Heat conversion pipe; 23. Water outlet; 24. Fixing plate; 25. Slide groove; 31. Sealing door; 32. Fixing strip; 33. Slot; 34. Rack; 35. Fixing screw; 36. Gear; 37. Turntable; 41. Protective shell; 42. Filter plate; 43. Fixing bolt; 44. Smoke inlet. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to embodiments:

[0026] Example 1

[0027] like Figure 1-5 As shown, this utility model provides a waste heat recovery device with filtration function, including a shell 1, a cooling device 2 inside the shell 1, a moving device 3 inside the shell 1, a filtration device 4 on the side of the shell 1, the filtration device 4 including a protective shell 41, the protective shell 41 being disposed on the side of the shell 1, through holes on both sides of the protective shell 41, fixing bolts 43 being inserted into the through holes on both sides of the protective shell 41, the protective shell 41 being fixedly connected to the shell 1 by the fixing bolts 43, a filter plate 42 being fixedly connected inside the protective shell 41, and a smoke inlet 44 being fixedly connected to the side of the protective shell 41.

[0028] In this embodiment, by installing the filter device 4, the flue gas is transported to the inside of the protective shell 41 through the flue gas inlet 44. The dust in the flue gas is initially filtered by the multi-layer filter plate 42. After filtering for a period of time, the filter device 4 is disassembled and cleaned by unscrewing the fixing bolts 43 to prevent the filter device 4 from becoming clogged due to long-term operation, which would reduce the filtration effect and cause dust to be adsorbed on the moving device 3, affecting the heat exchange efficiency.

[0029] Example 2

[0030] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the outer shell 1 includes a smoke guide pipe 14, which is disposed on the side of the protective shell 41. A sealing shell 11 is fixedly connected to the side of the smoke guide pipe 14. A dust collection drawer 12 is inserted into the bottom of the sealing shell 11, and a rain cap 13 is fixedly connected to the top of the sealing shell 11. The cooling device 2 includes a slide groove 25, which is fixedly connected to the inner wall of the sealing shell 11. A fixing plate 24 is slidably connected to the surface of the slide groove 25. A heat conversion tube 22 is fixedly connected to the surface of the fixing plate 24. A water outlet 23 is fixedly connected to the top of the heat conversion tube 22, and a water inlet 21 is fixedly connected to the bottom of the heat conversion tube 22. The moving device 3 includes a sealing door 31, which is fixedly connected to the front of the fixing plate 24. A fixing strip 32 is fixedly connected to the side of the sealing door 31. A slot 33 is movably connected to the outside of the fixing strip 32, and the fixing strip 32 is inserted into the inside of the slot 33.

[0031] In this embodiment, the rain cap 13 can effectively prevent rainwater from entering the device. By injecting water into the inlet 21, the water absorbs the residual heat in the flue gas when it flows through the heat conversion tube 22. The heated water is then discharged through the outlet 23, thereby achieving preheating of the water and greatly reducing the waste of resources.

[0032] Example 3

[0033] like Figure 1-5As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the moving device 3 includes a sealing door 31, which is fixedly connected to the front of the fixing plate 24. A fixing strip 32 is fixedly connected to the side of the sealing door 31. A slot 33 is movably connected to the outside of the fixing strip 32. The fixing strip 32 is inserted into the inside of the slot 33. A rack 34 is fixedly connected to the side of the sealing door 31. The rack 34 is slidably connected to the side of the sealing shell 11. A fixing screw 35 is threadedly connected to the surface of the rack 34. A gear 36 is provided at the bottom of the rack 34. The surface of the gear 36 meshes with the surface of the rack 34. A turntable 37 is fixedly connected to the axis of the gear 36.

[0034] In this embodiment, by unscrewing the fixing screw 35 and then rotating the turntable 37, the gear 36 is driven to rotate, and the gear 36 drives the rack 34 to move laterally, thereby removing the sealing door 31 along with the cooling device 2, making it convenient to clean the cooling device 2. This effectively prevents the dust that the filter device 4 does not filter from adhering to the surface of the heat conversion tube 22 and affecting the heat exchange efficiency. Since the device only needs to be cleaned periodically, the manual cleaning method saves maintenance costs.

[0035] The working principle of this waste heat recovery device with filtration function will be explained in detail below.

[0036] like Figure 1-5 As shown, by injecting water into the inlet 21, the water absorbs residual heat from the flue gas as it flows through the heat conversion tube 22. The heated water is then discharged through the outlet 23, thus achieving preheating of the water and greatly reducing resource waste. By installing the filter device 4, the flue gas is transported to the inside of the protective shell 41 through the flue gas inlet 44. The dust in the flue gas is initially filtered by the multi-layer filter plate 42. After filtering for a period of time, the filter device 4 is disassembled and cleaned by unscrewing the fixing bolts 43 to prevent the filter device 4 from becoming clogged due to long-term operation, which would reduce the filtration effect and cause dust to adhere to the moving device 3, affecting the heat exchange efficiency. By unscrewing the fixing screws 35, the turntable 37 is rotated, which drives the gear 36 to rotate. The gear 36 then drives the rack 34 to move laterally, thereby removing the sealing door 31 along with the cooling device 2 for easy cleaning of the cooling device 2. This effectively prevents the dust not filtered out by the filter device 4 from adhering to the surface of the heat conversion tube 22 and affecting the heat exchange efficiency. Since the device only needs to be cleaned periodically, manual cleaning saves maintenance costs.

[0037] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A waste heat recovery device having a filtering function, comprising a housing (1), characterized in that: The inside of the shell (1) is provided with cooling device (2), the inside of the shell (1) is provided with moving device (3), the side of the shell (1) is provided with filter device (4); The filter device (4) includes a protective shell (41), which is arranged on the side of the shell (1), both sides of the protective shell (41) are provided with through holes, the fixed bolts (43) are inserted into the through holes of both sides of the protective shell (41), the protective shell (41) is fixedly connected with the shell (1) through the fixed bolts (43), the filter plate (42) is fixedly connected inside the protective shell (41), and the smoke inlet (44) is fixedly connected on the side of the protective shell (41).

2. The waste heat recovery device with filtering function according to claim 1, characterized in that: The shell (1) includes a smoke guide pipe (14), which is arranged on the side of the protective shell (41), and the smoke guide pipe (14) is fixedly connected with the sealing shell (11). The sealing shell (11) is inserted with the dust collecting drawer (12) at the bottom, and the rain cap (13) is fixedly connected at the top of the sealing shell (11).

3. The waste heat recovery device with filtering function according to claim 1, characterized in that: The cooling device (2) includes a chute (25), which is fixedly connected to the inner wall of the sealing shell (11), and the surface of the chute (25) is slidably connected with the fixed plate (24).

4. The waste heat recovery device with filtering function according to claim 3, characterized in that: The surface of the fixed plate (24) is fixedly connected with the heat conversion pipe (22), the top of the heat conversion pipe (22) is fixedly connected with the water outlet (23), and the bottom of the heat conversion pipe (22) is fixedly connected with the water inlet (21).

5. The waste heat recovery device with filtering function according to claim 4, characterized in that: The sealing door (31) is fixedly connected to the front of the fixed plate (24), the sealing door (31) is fixedly connected with the fixed strip (32) on the side, the fixed strip (32) is movably connected with the slot (33) outside, and the fixed strip (32) is inserted into the slot (33).

6. The waste heat recovery device with filtering function according to claim 5, characterized in that: The side of the sealing door (31) is fixedly connected with the rack (34), the rack (34) is slidably connected on the side of the sealing shell (11), and the surface of the rack (34) is threadedly connected with the fixed screw (35).

7. The waste heat recovery device with filtering function according to claim 6, characterized in that: The bottom of the rack (34) is provided with a gear (36), the surface of the gear (36) is engaged with the surface of the rack (34), and the shaft of the gear (36) is fixedly connected with the rotating disc (37).

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