Waste heat recycling equipment for drying machine

Abstract

The utility model provides waste heat recycling equipment for a drying machine, which belongs to the field of waste heat recycling and comprises a tank body and a cover plate, the tank body is cylindrical, one end of the tank body in the length direction is provided with an opening, the cover plate is in bolted connection with the opening of the tank body, and one side of the tank body is provided with a waste heat collecting mechanism. By means of the waste heat collecting mechanism, collected waste heat is guided and conveyed, water flow is heated in the conveying process, and the waste heat utilization effect is improved; the guide-in pipe is connected with the inner cavity of the drying machine, the heat-resisting draught fan is started, steam waste heat generated in the drying machine is sucked into the tank body, and the waste heat is discharged out of the tank body in the conveying direction of the conveying pipe. The first water pump is started, an external water source is pumped into the soft sleeve, and the soft sleeve wraps the outer wall of the transmission pipe, so that transmitted heat can directly act on water flow for heating, and the recycling efficiency of waste heat is improved.

Description

Technical Field

[0001] The utility model relates to the field of waste heat recovery, and in particular to waste heat recovery and utilization equipment for a dryer. Background Art

[0002] As a commonly used equipment in industrial production, dryers are widely used in food, chemical, pharmaceutical, building materials and other fields. During the drying process, a large amount of waste heat is generated. If this waste heat is not recycled, it will not only cause energy waste, but also cause certain thermal pollution to the environment.

[0003] After searching, in the prior art, the Chinese patent with patent announcement number CN218097132U discloses "a waste heat recovery device for a dryer, comprising: a dryer and a mounting plate, both mounting plates being fixedly connected to one end of the dryer; a filter tube, a filtering mechanism being arranged on the filter tube; a hot air conveying mechanism being arranged on the dryer, and an air conveying mechanism being arranged on the filter tube. This utility model can absorb moisture in the hot air by arranging a first water-absorbing filter plate, and can absorb moisture in the hot air by arranging a second water-absorbing filter plate. The arrangement of the first water-absorbing filter plate and the second water-absorbing filter plate can achieve double filtration, thereby preventing the hot air from containing water vapor and preventing the water vapor from affecting the drying of the dryer. By conveying the filtered hot air into the dryer, the energy consumption of the dryer can be reduced, and the problem that the heat energy recovered by the waste heat recovery device in the prior art cannot be returned to the dryer and cannot be quickly utilized, thereby reducing the energy consumption of the dryer, can be solved." However, the following defects still exist:

[0004] When filtering the steam in the waste heat, a large amount of hot air will accumulate inside the filter tube. When the steam in the hot air is filtered by the water-absorbing filter plate, a large amount of hot air will be retained inside the filter tube and overflow, which will eventually lead to the filtered hot air being re-transported into the dryer with a greatly reduced amount of heat carried, and the efficiency of waste heat recovery is low.

[0005] Therefore, we have made improvements to this and proposed a waste heat recovery and utilization device for dryers. Utility Model Content

[0006] The purpose of the utility model is to address the current problem that when filtering the steam in the waste heat, a large amount of hot gas will accumulate inside the filter tube. When the steam in the hot gas is filtered by the water absorption filter plate, a large amount of hot gas will be retained inside the filter tube and overflow, which will eventually lead to a significant reduction in the heat carried by the filtered hot gas after it is re-delivered to the dryer, and the efficiency of recycling the waste heat is low.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0008] The waste heat recovery equipment used in the dryer can improve the above problems.

[0009] The utility model is specifically as follows:

[0010] It includes a tank body and a cover plate. The tank body is cylindrical. An opening is provided at one end of the tank body in the longitudinal direction. The cover plate is bolted to the opening of the tank body. A waste heat collection mechanism is provided on one side of the tank body.

[0011] The waste heat collection mechanism includes a fixed frame, an inlet pipe, a heat-resistant blower, a transmission pipe, a soft sleeve, a first water pump, an extraction pipe, a water injection pipe, a second water pump, a suction pipe and a discharge pipe. The fixed frame is bolted to the top of the tank body and is connected to the interior of the tank body. The inlet pipe is bolted to the top of the fixed frame and is connected to the fixed frame. The heat-resistant blower is arranged on the inner wall of the fixed frame. The transmission pipe is fixedly connected to the inner wall of the tank body and is connected to the fixed frame. The soft sleeve is fixedly connected to the outer wall of the transmission pipe. The first water pump is arranged at the top of the tank body, the extraction pipe is arranged at the input end of the first water pump, the water injection pipe is arranged at the output end of the first water pump, the second water pump is arranged at the bottom of the tank body, one end of the suction pipe is connected to the input end of the second water pump, and the discharge pipe is arranged at the output end of the second water pump.

[0012] As an optimal technical solution of the present invention, one end of the transmission pipe extending to the outside of the tank body is bolted with a circulation pipe, one end of the circulation pipe passes through the cover plate and is connected to the interior of the tank body, and a partition plate is fixedly connected to the inner wall of the tank body.

[0013] As an optimal technical solution of the present invention, an exhaust pipe is fixedly connected to the top of the tank body, and the exhaust pipe is connected to the space between the partition plate and the cover plate in the tank body. A sliding groove is provided on the inner wall of the exhaust pipe, and a shielding plate is slidably connected to the inner wall of the sliding groove.

[0014] As a preferred technical solution of the present invention, a drain pipe is fixedly connected to the bottom of the tank body, the drain pipe is communicated with the space between the partition plate and the cover plate in the tank body, and a rotating cap is threadedly connected to the bottom of the drain pipe.

[0015] As a preferred technical solution of the present invention, a temperature sensor is provided on the top of the tank body, and a controller is provided on the top of the tank body. The temperature sensor, the first water pump and the second water pump are all electrically connected to the controller.

[0016] As a preferred technical solution of the present invention, a thermal insulation pad is provided on the outer wall of the introduction tube, and the material of the thermal insulation pad is glass wool.

[0017] As a preferred technical solution of the present invention, two support frames are fixedly connected to the outer wall of the tank body, and friction pads are provided at the bottom of the support frames.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the solution of the present utility model:

[0020] Through the waste heat collection mechanism, the collected waste heat is guided and transmitted, and the water flow is heated during the transmission process, thereby improving the effect of waste heat utilization; by connecting the inlet pipe to the inner cavity of the dryer and starting the heat-resistant blower, the steam waste heat generated inside the dryer is pumped into the tank body, and the waste heat is discharged from the tank body along the transmission direction of the transmission pipe; starting the first water pump, the external water source is pumped into the soft casing, and since the soft casing is wrapped around the outer wall of the transmission pipe, the transmitted heat can directly act on the water flow for heating, thereby improving the recovery and utilization efficiency of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the waste heat recovery and utilization equipment for the dryer provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the right side cross-sectional structure of the waste heat recovery and utilization device for the dryer provided by the utility model;

[0023] Figure 3 The utility model provides a waste heat recovery and utilization device for a dryer Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a front cross-sectional structural diagram of the waste heat recovery and utilization device for a dryer provided by the utility model;

[0025] Figure 5 The utility model provides a waste heat recovery and utilization device for a dryer Figure 4 Enlarged view of point B in the middle.

[0026] Indicated in the figure:

[0027] 1. Tank body; 2. Cover plate; 3. Waste heat collection mechanism; 301. Fixed frame; 302. Inlet pipe; 303. Heat-resistant fan; 304. Transmission pipe; 305. Soft sleeve; 306. First water pump; 307. Extraction pipe; 308. Water injection pipe; 309. Second water pump; 310. Suction pipe; 311. Discharge pipe; 4. Circulation pipe; 5. Partition plate; 6. Exhaust pipe; 7. Chute; 8. Shielding plate; 9. Drain pipe; 10. Rotating cap; 11. Temperature sensor; 12. Controller; 13. Insulation pad; 14. Support frame; 15. Friction pad. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0029] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] like Figure 1-5 As shown, this embodiment proposes a waste heat recovery and utilization device for a dryer, including a tank body 1 and a cover plate 2. The tank body 1 is cylindrical, and an opening is set at one end of the tank body 1 in the length direction. The cover plate 2 is bolted to the opening of the tank body 1, and a waste heat collection mechanism 3 is set on one side of the tank body 1.

[0033] like Figure 2 and Figure 3As shown, the waste heat collection mechanism 3 includes a fixed frame 301, an inlet pipe 302, a heat-resistant blower 303, a transmission pipe 304, a soft sleeve 305, a first water pump 306, an extraction pipe 307, a water injection pipe 308, a second water pump 309, a suction pipe 310 and a discharge pipe 311. The fixed frame 301 is bolted to the top of the tank body 1 and communicates with the interior of the tank body 1. The inlet pipe 302 is bolted to the top of the fixed frame 301 and communicates with the fixed frame 301. The heat-resistant blower 303 is arranged on the inner wall of the fixed frame 301. The transmission pipe 304 is fixedly connected to the inner wall of the tank body 1 and communicates with the fixed frame 301. The soft sleeve 305 is fixedly connected to the transmission pipe 304. The outer wall of the soft sleeve 305 is provided with a gap between the inner wall of the soft sleeve 305 and the outer wall of the transmission pipe 304. The first water pump 306 is arranged at the top of the tank body 1, the extraction pipe 307 is arranged at the input end of the first water pump 306, the water injection pipe 308 is arranged at the output end of the first water pump 306, the second water pump 309 is arranged at the bottom of the tank body 1, one end of the suction pipe 310 is connected to the input end of the second water pump 309, and the other end of the suction pipe 310 is connected to the side wall of the soft sleeve 305. The suction pipe 310 and the water injection pipe 308 are respectively arranged close to the two ends of the soft sleeve 305, the discharge pipe 311 is arranged at the output end of the second water pump 309, and the transmission pipe 304 is made of copper. Put the soft sleeve 305 on the outer wall of the transmission pipe 304, and seal and fix the two ends of the soft sleeve 305 so that the soft sleeve 305 is fixed on the outer wall of the transmission pipe 304; connect the introduction pipe 302 to the dryer and make the introduction pipe 302 communicate with the inside of the dryer; start the heat-resistant blower 303 to extract the waste heat steam inside the dryer and transport it to the transmission pipe 304 for flow; connect the extraction pipe 307 to the external water source, start the first water pump 306, draw in the external water source, and after the water injection The water in the soft sleeve 305 is quickly heated after the hot air enters the transmission pipe 304. The second water pump 309 is subsequently started to extract the heated water in the soft sleeve 305 from the suction pipe 310, and the heated water is discharged from the tank body 1 through the discharge pipe 311 for use. This greatly improves the efficiency of waste heat recovery.

[0034] like Figure 2As shown, one end of the transmission pipe 304 extends from the flexible sleeve 305, passes through the cover plate 2, and extends to the outside of the tank body 1. The end of the transmission pipe 304 extending outside the tank body 1 is bolted to the circulation pipe 4. One end of the circulation pipe 4 passes through the cover plate 2 and communicates with the interior of the tank body 1. A partition plate 5 is fixedly connected to the inner wall of the tank body 1. The flexible sleeve 305 is located between the partition plate 5 and the cover plate 2. The transmission pipe 304 passes through the partition plate 5 and is fixedly connected to the partition plate 5. After passing through the partition plate 5, the transmission pipe 304 passes through the flexible sleeve 305. After flowing through the transmission pipe 304, the hot air will eventually re-enter the interior of the tank body 1 through the circulation pipe 4; the partition plate 5 divides the interior of the tank body 1 into two chambers. After the hot air entering the tank body 1 from the circulation pipe 4 is blocked by the partition plate 5, the remaining heat can insulate the outer wall of the flexible sleeve 305, maximizing the use of waste heat.

[0035] like Figure 5 As shown, an exhaust pipe 6 is fixedly connected to the top of the tank body 1. The exhaust pipe 6 communicates with the space between the partition plate 5 and the cover plate 2 in the tank body 1. A chute 7 is formed on the inner wall of the exhaust pipe 6. The length of the chute 7 extends along the length of the exhaust pipe 6. A shield plate 8 is slidably connected to the inner wall of the chute 7. The shield plate 8 is located at the connection between the exhaust pipe 6 and the tank body 1 and moves along the length of the chute 7. When the hot air in the circulation pipe 4 is continuously blown into the tank body 1, it is affected by the partition plate 5 and the hot air will be retained in the chamber where the soft sleeve 305 is located. As the hot air continues to blow, a large amount of hot air will accumulate and rise, pushing the shield plate 8 in the exhaust pipe 6, causing the shield plate 8 to rise along the length of the chute 7, and the excess hot air will be discharged from the tank body 1 through the chute 7, preventing the accumulated hot air in the tank body 1 from exploding. At the same time, when the hot air in the tank body 1 is less, the shield plate 8 loses its thrust and falls, blocking the exhaust pipe 6 and preventing the hot air from escaping.

[0036] like Figure 2 As shown, a drain pipe 9 is fixedly connected to the bottom of the tank body 1. The drain pipe 9 communicates with the space between the partition plate 5 and the cover plate 2 inside the tank body 1. A rotary cap 10 is threadedly connected to the bottom of the drain pipe 9. Hot air, which carries water vapor, enters the tank body 1 through the circulation pipe 4. After a long period of retention, the hot air condenses into water droplets, which then drip into the tank body 1. The user then rotates and removes the rotary cap 10 to allow the accumulated water inside the tank body 1 to be discharged through the drain pipe 9.

[0037] like Figure 2As shown, a temperature sensor 11 is installed on the top of the tank body 1. The probe at the bottom of the temperature sensor 11 extends into the interior of the soft sleeve 305. A controller 12 is installed on the top of the tank body 1. The temperature sensor 11, the first water pump 306, and the second water pump 309 are all electrically connected to the controller 12. When the water in the soft sleeve 305 is heated, the probe of the temperature sensor 11 can monitor the temperature of the water in real time and transmit the signal to the controller 12. The controller 12 can then control the first water pump 306 and the second water pump 309 to open or close, draining the hot water and injecting new cold water in a timely manner, reducing manual operation.

[0038] like Figure 2 As shown, the outer wall of the inlet pipe 302 is provided with an insulation pad 13, which is wrapped around the outer wall of the inlet pipe 302. The insulation pad 13 is made of glass wool. The insulation pad 13 is wrapped around the outer wall of the inlet pipe 302 to insulate the inlet pipe 302 and prevent the excess heat from escaping when it is transmitted in the inlet pipe 302.

[0039] like Figure 4 As shown, two support frames 14 are fixedly connected to the outer wall of the tank body 1, and friction pads 15 are provided at the bottom of the support frames 14. The support frames 14 can provide support for the tank body 1, and the friction pads 15 can increase the friction at the bottom of the support frames 14 to maintain the stability of the tank body 1 when in use.

[0040] Specifically, when the waste heat recovery and utilization equipment for the dryer is used: connect the inlet pipe 302 to the dryer and make the inlet pipe 302 communicate with the interior of the dryer; start the heat-resistant blower 303 to extract the waste heat steam inside the dryer and transport it to the transmission pipe 304 for flow, and finally send the hot air into the tank body 1 through the circulation pipe 4; connect the extraction pipe 307 to the external water source, start the first water pump 306, pump the external water source in, and inject it into the soft sleeve 305 after passing through the water injection pipe 308 until the soft sleeve 305 is filled; when the hot air enters the transmission pipe 304, the water flow in the soft sleeve 305 can be quickly increased. Heat; the probe of the temperature sensor 11 can monitor the temperature of the water flow in real time and transmit the signal to the controller 12. The controller 12 can control the first water pump 306 and the second water pump 309 to be turned on or off, and the hot water is discharged and new cold water is injected in time; the partition plate 5 divides the interior of the tank body 1 into two chambers. After the hot air entering the tank body 1 from the circulation pipe 4 is blocked by the partition plate 5, the remaining heat can insulate the outer wall of the soft sleeve 305, and maximize the use of waste heat; when there is more hot air inside the tank body 1, it will rise under the influence of continuous blowing, and eventually push the baffle 8 to move, so that the excess hot air is discharged from the chute 7 to prevent the tank body 1 from bursting.

[0041] All technical features in this embodiment can be freely combined according to actual needs.

[0042] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A waste heat recovery device for a dryer, comprising a tank body (1) and a cover plate (2), characterized in that: The tank body (1) is cylindrical, an opening is provided at one end in the longitudinal direction of the tank body (1), the cover plate (2) is bolted to the opening of the tank body (1), and a waste heat collection mechanism (3) is provided on one side of the tank body (1); The waste heat collection mechanism (3) includes a fixed frame (301), an inlet pipe (302), a heat-resistant blower (303), a transmission pipe (304), a soft sleeve (305), a first water pump (306), an extraction pipe (307), a water injection pipe (308), a second water pump (309), a suction pipe (310) and a discharge pipe (311), wherein the fixed frame (301) is bolted to the top of the tank body (1) and communicated with the interior of the tank body (1), the inlet pipe (302) is bolted to the top of the fixed frame (301) and communicated with the fixed frame (301), the heat-resistant blower (303) is arranged on the inner wall of the fixed frame (301), and the transmission pipe (304) is provided on the inner wall of the fixed frame (301). The transmission pipe (304) is fixedly connected to the inner wall of the tank body (1) and communicated with the fixed frame (301); the soft sleeve (305) is fixedly connected to the outer wall of the transmission pipe (304); the first water pump (306) is arranged at the top of the tank body (1); the extraction pipe (307) is arranged at the input end of the first water pump (306); the water injection pipe (308) is arranged at the output end of the first water pump (306); the second water pump (309) is arranged at the bottom of the tank body (1); one end of the suction pipe (310) is communicated with the input end of the second water pump (309); and the discharge pipe (311) is arranged at the output end of the second water pump (309).

2. The waste heat recovery equipment for a dryer according to claim 1, characterized in that: One end of the transmission pipe (304) extending to the outside of the tank body (1) is bolted to a circulation pipe (4), one end of the circulation pipe (4) passes through the cover plate (2) and is in communication with the interior of the tank body (1), and a partition plate (5) is fixedly connected to the inner wall of the tank body (1).

3. The waste heat recovery equipment for a dryer according to claim 1, characterized in that: An exhaust pipe (6) is fixedly connected to the top of the tank body (1), and the exhaust pipe (6) is communicated with the space between the partition plate (5) and the cover plate (2) in the tank body (1). A sliding groove (7) is provided on the inner wall of the exhaust pipe (6), and a shielding plate (8) is slidably connected to the inner wall of the sliding groove (7).

4. The waste heat recovery equipment for a dryer according to claim 1, characterized in that: A drain pipe (9) is fixedly connected to the bottom of the tank body (1), the drain pipe (9) is communicated with the space between the partition plate (5) and the cover plate (2) in the tank body (1), and a rotary cap (10) is threadedly connected to the bottom of the drain pipe (9).

5. The waste heat recovery equipment for a dryer according to claim 1, characterized in that: A temperature sensor (11) is provided on the top of the tank body (1), and a controller (12) is provided on the top of the tank body (1). The temperature sensor (11), the first water pump (306), and the second water pump (309) are all electrically connected to the controller (12).

6. The waste heat recovery equipment for a dryer according to claim 1, characterized in that: The outer wall of the introduction pipe (302) is provided with a heat-insulating pad (13), and the material of the heat-insulating pad (13) is glass wool.

7. The waste heat recovery equipment for a dryer according to claim 1, characterized in that: Two support frames (14) are fixedly connected to the outer wall of the tank body (1), and friction pads (15) are provided at the bottom of the support frames (14).

Images