Heat recovery device and cleaning equipment thereof
By designing a heat recovery device and a piston scraper cleaning equipment, the problem of waste heat resources in the methylamine distillation process was solved, achieving heat recovery and inner wall cleaning, reducing resource consumption and increasing the heat transfer rate.
Patent Information
- Application Number
- CN202511450615.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2025-12-16
AI Technical Summary
In the process of methylamine distillation, the direct discharge of wastewater leads to the waste of waste heat resources.
Design a heat recovery device that achieves temporary storage and heat recovery of wastewater through heat exchange between the liquid inside and outside the intermediate coarse pipe and a piston scraper cleaning device, and uses a lifting mechanism to clean impurities from the inner wall of the intermediate coarse pipe.
It reduces the resource consumption of the liquid to be heated, improves the heat transfer rate, and effectively cleans the inner wall of the intermediate thick pipe, thus avoiding resource waste.
Smart Images
Figure CN121140518A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of energy conservation and environmental protection technology, and in particular to a heat recovery device and its cleaning equipment. Background Technology
[0002] Waste heat resources refer to the waste heat energy that is not effectively utilized in the industrial production process. The total amount of heat energy that can be quantified and recovered after technical and economic analysis is widely used in industries such as power and heat, metallurgy, chemical industry, building materials, and machinery. Specific sources include: high-temperature flue gas, cooling media, waste steam and wastewater, heat of chemical reaction, high-temperature products and slag, combustible waste gas and waste materials, etc.
[0003] In the industrial production of methylamine, distillation is a key step in achieving efficient separation and purification of methylamine products. During the production process, a certain amount of wastewater is generated. Usually, this wastewater is directly discharged for sewage treatment. However, because this wastewater has a high temperature, it leads to a waste of waste heat resources. Summary of the Invention
[0004] This invention provides a heat recovery device and its cleaning equipment, which can solve the problem in the prior art where wastewater from methylamine distillation is usually discharged directly for sewage treatment, resulting in the waste of waste heat resources.
[0005] A heat recovery device includes a base frame, a storage cylinder fixed to the upper surface of the base frame, a water inlet pipe connected to the upper end of the storage cylinder near its edge, a drain pipe connected to the lower end of the storage cylinder near its edge, the drain pipe penetrating the base frame, and a drain valve installed on the drain pipe. A central thick pipe is installed inside the storage cylinder, with its two ends fixedly connected to the inner top and bottom of the storage cylinder, respectively. A second water inlet pipe, connected to the central thick pipe, is fixedly installed to the upper surface of the storage cylinder, and a second drain pipe, connected to the central thick pipe, is fixedly installed to the lower surface of the storage cylinder, penetrating the base frame, and a drain valve installed on the drain pipe.
[0006] As a further technical solution of the present invention, an insulation cover is fixed on the upper end face of the base frame, the insulation cover covers the outside of the storage cylinder, and both the first water inlet pipe and the second water inlet pipe pass through the insulation cover.
[0007] A cleaning device for a heat recovery apparatus, applied to the aforementioned heat recovery apparatus, includes a piston scraper and a lifting column. The piston scraper is movably disposed within a central thick pipe. The lower end of the lifting column is fixed to the upper end face of the piston scraper. The upper end of the lifting column movably penetrates through an insulation hood and is fixed with a lifting plate. The upper end face of the piston scraper is provided with multiple through holes. A lifting mechanism for use with the lifting plate is provided on a base frame. A third water inlet pipe is connected to the second water inlet pipe. A second water inlet valve is provided on the second water inlet pipe, and a third water inlet valve is provided on the third water inlet pipe.
[0008] As a further technical solution of the present invention, each of the connecting holes is inclined, the lower end of each connecting hole is far away from the lifting column, and the upper end of each connecting hole is close to the lifting column.
[0009] As a further technical solution of the present invention, the lifting mechanism includes a connecting component, a lifting component and a driving component. The connecting component includes a lifting ring movably sleeved on the outer surface of the heat insulation cover. Multiple connecting plates are fixed between the lifting ring and the lifting plate. Multiple upper rollers are rotatably provided on the side of each connecting plate near the heat insulation cover. Multiple lower rollers are rotatably provided on the inner surface of each lifting ring.
[0010] As a further technical solution of the present invention, the lifting assembly includes two U-shaped frames, each U-shaped frame is fixed to the upper end face of the base frame, and a lifting plate is movably arranged inside each U-shaped frame. One end of the lifting plate is fixed to the outer surface of the lifting ring, and a lead screw is rotatably arranged between the U-shaped frame and the base frame, with the lead screw thread passing through the lifting plate.
[0011] As a further technical solution of the present invention, the drive assembly includes two external connecting seats fixed to the lower end face of the base frame, a rotating shaft is rotatably arranged between the two external connecting seats, two worm sleeves are fixedly sleeved on the outer surface of the rotating shaft, the lower end of each lead screw rotatably passes through the base frame and is fixedly sleeved with a worm wheel, the worm sleeve and the worm wheel are meshed and connected, two internal connecting seats are also fixed to the lower end face of the base frame, the rotating shaft rotatably passes through the two internal connecting seats, and a drive unit for use with the rotating shaft is provided on the base frame.
[0012] As a further technical solution of the present invention, the drive unit includes a mounting bracket fixed to the upper surface of the base frame, a rotating column rotatably arranged on one side of the mounting bracket, a handwheel fixed to the end of the rotating column, and a chain drive component arranged between the rotating column and the rotating shaft.
[0013] As a further technical solution of the present invention, the chain drive component includes a sprocket one fixedly sleeved on the outer surface of the rotating column, a sprocket two fixedly sleeved on the outer surface of the rotating shaft, and a chain sleeved between the sprocket one and the sprocket two.
[0014] As a further technical solution of the present invention, two L-shaped connecting seats are symmetrically fixed on the upper end of the lifting plate. A guide plate is fixed on the inner top of each L-shaped connecting seat. The lower end of the guide plate movably passes through the U-shaped frame and is fixed with a lifting slider. Two lifting grooves are symmetrically opened on the inner wall of the U-shaped frame to cooperate with the lifting slider.
[0015] The beneficial effects of this invention are: 1. In use, the wastewater from the methylamine distillation process is introduced into the intermediate coarse pipe through inlet pipe two (without completely filling the intermediate coarse pipe). Initially, drain valve two on drain pipe two is closed, allowing the intermediate coarse pipe to temporarily store the wastewater from the methylamine distillation process. Then, the liquid to be heated is introduced into the storage tank through inlet pipe one. Initially, drain valve one on drain pipe one is also closed, allowing the storage tank to temporarily store the liquid to be heated. At this time, the liquid to be heated in the storage tank is outside the intermediate coarse pipe. During this process, the wastewater in the intermediate coarse pipe... (At a higher temperature) heat is transferred to the liquid outside the middle thick pipe, causing the temperature of the liquid outside the middle thick pipe to rise. After a period of time, the second drain valve on the second drain pipe opens, further guiding the wastewater in the middle thick pipe to the external wastewater treatment tank (the specific guiding location is in the prior art). At this time, the first drain valve on the first drain pipe can be opened as needed to guide the heated liquid to the required location (the specific guiding location is in the prior art). Since the liquid to be heated already has a certain temperature, the resource consumption when heating this part of the liquid in the future is reduced.
[0016] 2. When it is necessary to clean the inner wall of the intermediate coarse pipe, first close the inlet valve 2 and the drain valve 2, then open the inlet valve 3. Through the cooperation of the inlet pipe 3 and the inlet pipe 2, the cleaning water is delivered into the intermediate coarse pipe. After the cleaning water has soaked the inner wall of the intermediate coarse pipe for a period of time, the lifting plate can be driven to move up and down repeatedly by the lifting mechanism. The lifting plate drives the lifting column and the piston scraper to move up and down together. During the up and down movement, the piston scraper scrapes off the impurities and other debris adhering to the inner wall of the intermediate coarse pipe to ensure the cleaning effect. Then open the drain valve 2 to drain the water in the intermediate coarse pipe.
[0017] 3. During the heat transfer process between the wastewater (higher temperature) inside the intermediate thick pipe and the liquid outside the intermediate thick pipe, the lifting plate can be driven to move up and down, carrying the lifting column and piston scraper. In the initial state, the piston scraper can be in a higher position, and then the piston scraper is forced to move downward. During the downward movement of the piston scraper inside the intermediate thick pipe, on the one hand, the inner wall of the intermediate thick pipe is cleaned, and on the other hand, during the downward movement of the piston scraper, through the set multiple connecting holes, the wastewater located inside the intermediate thick pipe and close to the inner wall of the intermediate thick pipe is guided to the center of the intermediate thick pipe. Since the heat transfer of the wastewater close to the inner wall of the intermediate thick pipe is faster, this part of the wastewater is guided towards the center of the intermediate thick pipe, so that the wastewater with a higher temperature at the center of the intermediate thick pipe flows to replenish the area close to the inner wall of the intermediate thick pipe, thereby increasing the rate of heat transfer. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the internal structure of the intermediate thick tube in this invention; Figure 5 This is a schematic diagram of the internal structure of the heat insulation cover in this invention; Figure 6 This is a schematic diagram of the lower end structure of the piston scraper in this invention; Figure 7 This is a schematic diagram of the upper structure of the piston scraper in this invention; Figure 8 This is a schematic diagram of the connection between the lifting ring and the connecting plate in this invention. Figure 1 ; Figure 9 This is a schematic diagram of the connection between the lifting ring and the connecting plate in this invention. Figure 2 ; Figure 10 This is a schematic diagram showing the connection between the lifting ring and the lifting plate in this invention; Figure 11 This is a schematic diagram of the internal structure of the U-shaped frame in this invention; Figure 12 This is a schematic diagram of the bottom structure of the base frame in this invention; Figure 13 This is a schematic diagram showing the connection between the sprocket and the chain body in this invention.
[0019] In the diagram: 100, base frame; 101, storage cylinder; 102, water inlet pipe 1; 103, drain pipe 1; 104, drain valve 1; 105, intermediate thick pipe; 106, water inlet pipe 2; 107, drain pipe 2; 108, drain valve 2; 109, insulation cover; 200, piston scraper; 201, lifting column; 202, lifting plate; 203, connecting hole; 204, water inlet pipe 3; 205, water inlet valve 2; 206, water inlet valve 3; 300, lifting ring; 30 1. Connecting plate; 302. Upper roller; 303. Lower roller; 304. U-shaped frame; 305. Lifting plate; 306. Lead screw; 307. External connecting seat; 308. Rotating shaft; 309. Worm sleeve; 310. Worm wheel; 311. Internal connecting seat; 312. Mounting bracket; 313. Rotating column; 314. Handwheel; 315. Sprocket 1; 316. Sprocket 2; 317. Chain body; 400. L-shaped connecting seat; 401. Guide plate; 402. Lifting slider. Detailed Implementation
[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.
[0021] Reference Figures 1-13 A heat recovery device includes a base frame 100, a storage cylinder 101 fixed to the upper end face of the base frame 100, a water inlet pipe 102 connected to the upper end of the storage cylinder 101 near its edge, a drain pipe 103 connected to the lower end of the storage cylinder 101 near its edge, the drain pipe 103 penetrating the base frame 100, a drain valve 104 provided on the drain pipe 103, a central thick pipe 105 provided inside the storage cylinder 101, the two ends of the central thick pipe 105 being fixedly connected to the inner top and inner bottom of the storage cylinder 101 respectively, a second water inlet pipe 106 connected to the central thick pipe 105 fixed to the upper end face of the storage cylinder 101, a second drain pipe 107 connected to the central thick pipe 105 fixed to the lower end face of the storage cylinder 101, the drain pipe 107 penetrating the base frame 100, and a drain valve 108 provided on the drain pipe 107.
[0022] Both drain valve 104 and drain valve 2108 are solenoid valves.
[0023] In this application, the wastewater from the methylamine distillation process is guided through inlet pipe 106 to the intermediate coarse pipe 105 (without completely filling the intermediate coarse pipe 105). Initially, drain valve 108 on drain pipe 107 is closed, allowing the intermediate coarse pipe 105 to temporarily store the wastewater. Then, the liquid to be heated is guided through inlet pipe 102 to the storage tank 101. Initially, drain valve 104 on drain pipe 103 is also closed, allowing the storage tank 101 to temporarily store the liquid to be heated. At this time, the liquid to be heated in the storage tank 101 is outside the intermediate coarse pipe 105. During this process, the liquid located in the intermediate coarse pipe 105... The wastewater (at a higher temperature) inside the intermediate thick pipe 105 transfers heat with the liquid outside the intermediate thick pipe 105, causing the temperature of the liquid outside the intermediate thick pipe 105 to rise. After a period of time, the drain valve 108 on the drain pipe 107 opens to further guide the wastewater inside the intermediate thick pipe 105 to an external wastewater treatment tank (the specific location of the guide is in the prior art). At this time, the drain valve 104 on the drain pipe 103 can be opened as needed to guide the heated liquid to the required location (the specific location of the guide is in the prior art). Since the liquid to be heated has already reached a certain temperature, the resource consumption when heating this part of the liquid in the future is reduced.
[0024] An insulation cover 109 is fixed to the upper end of the base frame 100. The insulation cover 109 covers the outside of the storage cylinder 101. Water inlet pipe 102 and water inlet pipe 2 106 both pass through the insulation cover 109.
[0025] The storage cylinder 101 is insulated by the heat-insulating cover 109 to reduce the loss of heat from the liquid inside the storage cylinder 101.
[0026] The present invention also discloses a cleaning device for a heat recovery device, which is applied to the aforementioned heat recovery device. The device includes a piston scraper 200 and a lifting column 201. The piston scraper 200 is movably disposed within a central thick pipe 105. The lower end of the lifting column 201 is fixed to the upper end face of the piston scraper 200. The upper end of the lifting column 201 movably penetrates the insulation cover 109 and is fixed with a lifting plate 202. Multiple connecting holes 203 are provided through the upper end face of the piston scraper 200. A lifting mechanism for use with the lifting plate 202 is provided on the base frame 100. A third water inlet pipe 204 is connected to the second water inlet pipe 106. A second water inlet valve 205 is provided on the second water inlet pipe 106, and a third water inlet valve 206 is provided on the third water inlet pipe 204. The third water inlet valve 206 is an electromagnetic valve.
[0027] After prolonged use, the inner wall of the intermediate thick pipe 105 is prone to adsorbing some impurities from wastewater. Existing technology usually uses rinsing to wash away these impurities, but the cleaning effect is generally poor.
[0028] When using this solution, if it is necessary to clean the inner wall of the intermediate coarse pipe 105, first close the second water inlet valve 205 and the second drain valve 108, then open the third water inlet valve 206. Through the cooperation of the third water inlet pipe 204 and the second water inlet pipe 106, the cleaning water is delivered into the intermediate coarse pipe 105. After the cleaning water has soaked the inner wall of the intermediate coarse pipe 105 for a period of time, the lifting plate 202 can be driven to move up and down repeatedly by the lifting mechanism. The lifting plate 202 drives the lifting column 201 and the piston scraper 200 to move up and down together. During the up and down movement, the piston scraper 200 scrapes and cleans the impurities and other debris adhering to the inner wall of the intermediate coarse pipe 105 to ensure the cleaning effect. Then, open the second drain valve 108 to drain the water in the intermediate coarse pipe 105.
[0029] Since the purpose of this application is to reduce the waste and consumption of resources, the lifting mechanism is manually driven.
[0030] Each connecting hole 203 is inclined, with the lower end of each connecting hole 203 being far away from the lifting column 201, and the upper end of each connecting hole 203 being close to the lifting column 201.
[0031] During the heat transfer process between the wastewater (at a higher temperature) inside the intermediate thick pipe 105 and the liquid outside the intermediate thick pipe 105, the lifting plate 202 can be driven to move up and down reciprocally along with the lifting column 201 and the piston scraper 200. In the initial state, the piston scraper 200 can be in a higher position, and then the piston scraper 200 is prompted to move downward. During the downward movement of the piston scraper 200 inside the intermediate thick pipe 105, on the one hand, the inner wall of the intermediate thick pipe 105 can be cleaned, and on the other hand, during the downward movement of the piston scraper 200, through the multiple connecting holes 203, the wastewater located inside the intermediate thick pipe 105 and close to the inner wall of the intermediate thick pipe 105 is guided towards the center of the intermediate thick pipe 105. Since the heat transfer of the wastewater close to the inner wall of the intermediate thick pipe 105 is faster, this part of the wastewater is guided towards the center of the intermediate thick pipe 105, causing the wastewater at the center of the intermediate thick pipe 105 with a higher temperature to flow and replenish the area close to the inner wall of the intermediate thick pipe 105, thereby increasing the rate of heat transfer.
[0032] The lifting mechanism includes a connecting component, a lifting component, and a driving component. The connecting component includes a lifting ring 300 that is movably sleeved on the outer surface of the insulation cover 109. Multiple connecting plates 301 are fixed between the lifting ring 300 and the lifting plate 202. Multiple upper rollers 302 are rotatably provided on the side of each connecting plate 301 near the insulation cover 109. Multiple lower rollers 303 are rotatably provided on the inner surface of each lifting ring 300.
[0033] In use, the lifting ring 300 can be driven to move up and down, thereby driving the connecting plate 301 and the lifting plate 202 to move up and down together, thus controlling the lifting column 201 and the piston scraper 200 to move up and down.
[0034] The coordination of the upper roller 302 and the lower roller 303 can improve the stability of the lifting ring 300, the connecting plate 301 and the lifting plate 202 during the lifting and moving process.
[0035] The lifting assembly includes two U-shaped frames 304, each U-shaped frame 304 is fixed to the upper end face of the base frame 100, and a lifting plate 305 is movably arranged inside each U-shaped frame 304. One end of the lifting plate 305 is fixed to the outer surface of the lifting ring 300. A lead screw 306 is rotatably arranged between the U-shaped frame 304 and the base frame 100, and the lead screw 306 is threaded through the lifting plate 305.
[0036] When the drive screw 306 rotates, it will drive the lifting plate 305 to move, thereby causing the lifting ring 300, the connecting plate 301 and the lifting plate 202 to move together.
[0037] The drive assembly includes two external connecting seats 307 fixed to the lower end face of the base frame 100. A rotating shaft 308 is rotatably arranged between the two external connecting seats 307. Two worm sleeves 309 are fixedly sleeved on the outer surface of the rotating shaft 308. The lower end of each lead screw 306 rotatably passes through the base frame 100 and is fixedly sleeved with a worm wheel 310. The worm sleeve 309 and the worm wheel 310 are meshed and connected. Two internal connecting seats 311 are also fixed to the lower end face of the base frame 100. The rotating shaft 308 rotatably passes through the two internal connecting seats 311. A drive unit that works with the rotating shaft 308 is provided on the base frame 100.
[0038] When the drive unit drives the rotating shaft 308 to rotate, it will drive the worm sleeve 309 to rotate together. The rotating worm sleeve 309 drives the worm wheel 310 to rotate, thereby driving the lead screw 306 to rotate.
[0039] The drive unit includes a mounting bracket 312 fixed to the upper surface of the base frame 100. A rotating column 313 is rotatably provided on one side of the mounting bracket 312. A handwheel 314 is fixed to the end of the rotating column 313. A chain drive component is provided between the rotating column 313 and the rotating shaft 308.
[0040] Since the drive unit is manually driven, the rotating column 313 and handwheel 314 are positioned at a suitable height by means of the mounting bracket 312 to facilitate operation and force application by the operator.
[0041] When the operator turns the handwheel 314, it will cause the rotating column 313 to rotate together. The rotating column 313 will drive the rotating shaft 308 to rotate through the chain drive component.
[0042] The chain drive includes a first sprocket 315 fixedly sleeved on the outer surface of the rotating column 313, a second sprocket 316 fixedly sleeved on the outer surface of the rotating shaft 308, and a chain body 317 sleeved between the first sprocket 315 and the second sprocket 316.
[0043] When the operator turns the handwheel 314, it will drive the rotating column 313 to rotate, which in turn drives the first sprocket 315 to rotate. The rotating sprocket 315 drives the second sprocket 316 and the rotating shaft 308 to rotate together through the chain body 317. The rotating shaft 308 drives the worm gear sleeve 309 to rotate, which in turn drives the worm wheel 310 and the lead screw 306 to rotate. The rotating lead screw 306 drives the lifting plate 305 to move, which in turn drives the lifting ring 300, the connecting plate 301 and the lifting disc 202 to move. When the lifting disc 202 moves, it drives the lifting column 201 and the piston scraper 200 to move together.
[0044] The upper end of the lifting plate 202 is symmetrically fixed with two L-shaped connecting seats 400. Each L-shaped connecting seat 400 has a guide plate 401 fixed to its inner top. The lower end of the guide plate 401 movably passes through the U-shaped frame 304 and is fixed with a lifting slider 402. Two lifting grooves that cooperate with the lifting slider 402 are symmetrically opened on the inner wall of the U-shaped frame 304.
[0045] During the lifting and moving process, the lifting plate 202 will drive the L-shaped connecting seat 400, guide plate 401 and lifting slider 402 to move up and down together. The lifting slider 402 is guided by the lifting slide groove and the guide plate 401 is guided by the U-shaped frame 304, which further ensures the stability of the lifting plate 202 during the lifting displacement process.
[0046] In use, the wastewater from the methylamine distillation process is guided through inlet pipe 106 to the intermediate coarse pipe 105 (without completely filling the intermediate coarse pipe 105). Initially, drain valve 108 on drain pipe 107 is closed, allowing the intermediate coarse pipe 105 to temporarily store the wastewater. Then, the liquid to be heated is guided through inlet pipe 102 to the storage cylinder 101. Initially, drain valve 104 on drain pipe 103 is also closed, allowing the storage cylinder 101 to temporarily store the liquid to be heated. At this time, the liquid to be heated in the storage cylinder 101 is outside the intermediate coarse pipe 105. During this process, the liquid located in the intermediate... The wastewater (at a higher temperature) inside the thick pipe 105 transfers heat with the liquid outside the middle thick pipe 105, causing the temperature of the liquid outside the middle thick pipe 105 to rise. After a period of time, the drain valve 108 on the drain pipe 107 opens to further guide the wastewater inside the middle thick pipe 105 to an external wastewater treatment tank (the specific location of the guide is in the prior art). At this time, the drain valve 104 on the drain pipe 103 can be opened as needed to guide the heated liquid to the required location (the specific location of the guide is in the prior art). Since the liquid to be heated has already reached a certain temperature, the resource consumption when heating this part of the liquid in the future is reduced. When it is necessary to clean the inner wall of the intermediate coarse pipe 105, first close the water inlet valve 205 and the drain valve 208, then open the water inlet valve 306. Through the cooperation of the water inlet pipe 304 and the water inlet pipe 206, the cleaning water is delivered into the intermediate coarse pipe 105. After the cleaning water has soaked the inner wall of the intermediate coarse pipe 105 for a period of time, the lifting plate 202 can be driven to move up and down and back and forth through the lifting mechanism. The lifting plate 202 drives the lifting column 201 and the piston scraper 200 to move up and down together. During the up and down movement, the piston scraper 200 scrapes and cleans the impurities and other debris adhering to the inner wall of the intermediate coarse pipe 105 to ensure the cleaning effect. Then open the drain valve 208 to drain the water in the intermediate coarse pipe 105. During the heat transfer process between the wastewater (at a higher temperature) inside the intermediate thick pipe 105 and the liquid outside the intermediate thick pipe 105, the lifting plate 202 can be driven to move up and down reciprocally along with the lifting column 201 and the piston scraper 200. In the initial state, the piston scraper 200 can be in a higher position, and then the piston scraper 200 is prompted to move downward. During the downward movement of the piston scraper 200 inside the intermediate thick pipe 105, on the one hand, the inner wall of the intermediate thick pipe 105 can be cleaned, and on the other hand, during the downward movement of the piston scraper 200, through the multiple connecting holes 203, the wastewater located inside the intermediate thick pipe 105 and close to the inner wall of the intermediate thick pipe 105 is guided towards the center of the intermediate thick pipe 105. Since the heat transfer of the wastewater close to the inner wall of the intermediate thick pipe 105 is faster, this part of the wastewater is guided towards the center of the intermediate thick pipe 105, causing the wastewater at the center of the intermediate thick pipe 105 with a higher temperature to flow and replenish the area close to the inner wall of the intermediate thick pipe 105, thereby increasing the rate of heat transfer.
[0047] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A heat recovery device, comprising a base frame (100), characterized in that, A storage cylinder (101) is fixed to the upper surface of the base frame (100). A water inlet pipe (102) is connected to the upper end of the storage cylinder (101) near its edge. A drain pipe (103) is connected to the lower end of the storage cylinder (101) near its edge. The drain pipe (103) passes through the base frame (100). A drain valve (104) is installed on the drain pipe (103). A middle thick pipe (105) is installed inside the storage cylinder (101). The two ends of the intermediate thick pipe (105) are fixedly connected to the inner top and inner bottom of the storage cylinder (101), respectively. The upper end face of the storage cylinder (101) is fixedly provided with a water inlet pipe (106) communicating with the intermediate thick pipe (105). The lower end face of the storage cylinder (101) is fixedly provided with a drain pipe (107) communicating with the intermediate thick pipe (105). The drain pipe (107) passes through the base frame (100). A drain valve (108) is provided on the drain pipe (107).
2. The heat recovery device according to claim 1, characterized in that, The upper end face of the base frame (100) is fixed with a heat insulation cover (109), which covers the outside of the storage cylinder (101). Water inlet pipe one (102) and water inlet pipe two (106) both pass through the heat insulation cover (109).
3. A cleaning device for a heat recovery apparatus, applied to the heat recovery apparatus of claim 2, characterized in that, The device includes a piston scraper (200) and a lifting column (201). The piston scraper (200) is movably disposed inside the middle thick pipe (105). The lower end of the lifting column (201) is fixed to the upper end face of the piston scraper (200). The upper end of the lifting column (201) movably passes through the heat insulation cover (109) and is fixed with a lifting plate (202). The upper end face of the piston scraper (200) is provided with multiple connecting holes (203). The base frame (100) is provided with a lifting mechanism that works with the lifting plate (202). The second water inlet pipe (106) is connected to the third water inlet pipe (204). The second water inlet pipe (106) is provided with the second water inlet valve (205). The third water inlet pipe (204) is provided with the third water inlet valve (206).
4. The cleaning equipment for a heat recovery device according to claim 3, characterized in that, Each of the aforementioned connecting holes (203) is inclined, with the lower end of each connecting hole (203) being away from the lifting column (201) and the upper end of each connecting hole (203) being close to the lifting column (201).
5. The cleaning equipment for a heat recovery device according to claim 3, characterized in that, The lifting mechanism includes a connecting component, a lifting component, and a driving component. The connecting component includes a lifting ring (300) that is movably sleeved on the outer surface of the insulation cover (109). Multiple connecting plates (301) are fixed between the lifting ring (300) and the lifting plate (202). Multiple upper rollers (302) are rotatably provided on the side of each connecting plate (301) near the insulation cover (109). Multiple lower rollers (303) are rotatably provided on the inner surface of each lifting ring (300).
6. The cleaning equipment for a heat recovery device according to claim 5, characterized in that, The lifting assembly includes two U-shaped frames (304), each U-shaped frame (304) is fixed to the upper end face of the base frame (100), and a lifting plate (305) is movably arranged inside each U-shaped frame (304). One end of the lifting plate (305) is fixed to the outer surface of the lifting ring (300). A lead screw (306) is rotatably arranged between the U-shaped frame (304) and the base frame (100), and the lead screw (306) is threaded through the lifting plate (305).
7. The cleaning equipment for a heat recovery device according to claim 5, characterized in that, The drive assembly includes two external connecting seats (307) fixed to the lower end face of the base frame (100). A rotating shaft (308) is rotatably arranged between the two external connecting seats (307). Two worm sleeves (309) are fixedly sleeved on the outer surface of the rotating shaft (308). The lower end of each lead screw (306) rotatably passes through the base frame (100) and is fixedly sleeved with a worm wheel (310). The worm sleeve (309) meshes with the worm wheel (310). Two internal connecting seats (311) are also fixed to the lower end face of the base frame (100). The rotating shaft (308) rotatably passes through the two internal connecting seats (311). A drive unit that works with the rotating shaft (308) is provided on the base frame (100).
8. The cleaning equipment for a heat recovery device according to claim 7, characterized in that, The drive unit includes a mounting bracket (312) fixed to the upper surface of the base frame (100), a rotating column (313) is rotatably provided on one side of the mounting bracket (312), a handwheel (314) is fixed at the end of the rotating column (313), and a chain drive component is provided between the rotating column (313) and the rotating shaft (308).
9. The cleaning equipment for a heat recovery device according to claim 8, characterized in that, The chain drive component includes a sprocket one (315) fixedly sleeved on the outer surface of the rotating column (313), a sprocket two (316) fixedly sleeved on the outer surface of the rotating shaft (308), and a chain body (317) sleeved between the sprocket one (315) and the sprocket two (316).
10. The cleaning equipment for a heat recovery device according to claim 6, characterized in that, The upper end face of the lifting plate (202) is symmetrically fixed with two L-shaped connecting seats (400). Each L-shaped connecting seat (400) has a guide plate (401) fixed on its inner top. The lower end of the guide plate (401) movably passes through the U-shaped frame (304) and is fixed with a lifting slider (402). Two lifting grooves are symmetrically opened on the inner wall of the U-shaped frame (304) to cooperate with the lifting slider (402).