Drying converter capable of recycling waste heat

Abstract

The utility model discloses a drying converter capable of recycling waste heat, which belongs to the technical field of waste heat recovery and comprises a drying inner container, a circulating water pipe is wound on the outer side of the drying inner container along the length direction, and an outer shell is sleeved on the outer side of the drying inner container. The cover plates are arranged at the two ends of the drying inner container and the two ends of the outer shell, the cavities communicated with the gaps between the drying inner container and the outer shell are formed in the inner tops of the cover plates, the dustproof nets are installed at the inner bottoms of the cavities, and the draught fan is arranged in one of the cavities, so that after the drying converter stops being used, the dustproof nets can be prevented from being blocked by the draught fan. And when cold water passes through the circulating water pipe to take away heat on the surface of the drying inner container, hot air in the drying inner container can be circulated to the gap between the drying inner container and the outer shell through the draught fan, the waste heat recovery rate of the circulating water pipe is increased, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to a drying converter, in particular to a drying converter capable of recovering and reusing waste heat, belonging to the technical field of waste heat recovery. Background Art

[0002] In the prior art, for example, a utility model with publication number 202020616164.8 discloses a drying converter for recovering and reusing waste heat. In order to solve the problem that the drying converter cannot recover and reuse the working waste heat of the drying furnace body during use, resulting in waste heat energy of the drying furnace body, an annular circulating water pipe is coiled around the outside of the drying inner tank. After the drying operation is completed, cold water is connected to the inside of the annular circulating water pipe to take away the working waste heat of the drying furnace body for recycling, which is beneficial to reduce energy waste. In addition, a de-impurity mechanism is used to filter the cold water when it enters to avoid blockage of the annular circulating water pipe.

[0003] Similar to the above application, there are still some shortcomings:

[0004] 1. After the converter is shut down, the heat on the surface of the drying liner is only taken away through the circulating water pipe, and the waste heat recovery rate is slow. The heat contained in the hot air inside the drying liner cannot be quickly recovered;

[0005] 2. The particle impurities on the surface of the filter cannot be cleaned during the filtering process. Long-term use can easily cause the filter to be blocked, affecting the circulation effect of the water flow;

[0006] Therefore, a drying converter with waste heat recovery and reuse is designed to optimize the above problems. Utility Model Content

[0007] The main purpose of the utility model is to provide a drying converter for waste heat recovery and reuse. Cover plates are arranged at both ends of the drying inner tank and the outer shell, and the inner top of the cover plate is provided with a cavity that is connected to the gap between the drying inner tank and the outer shell. In addition, a dustproof net is installed at the inner bottom of the cavity, and a fan is arranged inside one of the cavities, so that after the drying converter stops using, the two ends of the drying inner tank are blocked. While cold water takes away the heat on the surface of the drying inner tank through the circulating water pipe, the fan can circulate the hot air inside the drying inner tank to the gap between the drying inner tank and the outer shell, thereby increasing the rate of waste heat recovery in the circulating water pipe and having higher practicality. The filtering mechanism composed of a water tank, a filter screen, a water inlet pipe, a rotating rod, an impeller, a scraper, and a collecting tank can filter the cold water entering the circulating water pipe, and the rotating rod on the impeller is pushed to rotate during the process of the cold water entering. The rotating rod drives the scraper to rotate in contact with the surface of the filter screen, and the filter screen is self-cleaned, thereby effectively avoiding blockage of the circulating water pipe and ensuring stable operation of the device.

[0008] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0009] A drying converter for waste heat recovery and reuse comprises a drying liner, a circulating water pipe is wound around the outer side of the drying liner along the length direction, an outer shell is sleeved on the outer side of the drying liner, and the drying liner and the outer shell are fixedly connected, a gap is left between the inner side of the outer shell and the outer side of the circulating water pipe, cover plates are rotatably installed at both ends of the drying liner and the outer shell, cavities are opened on the inner tops of the cover plates, the cavities are connected to the gaps between the drying liner and the outer shell, dustproof nets are installed on the inner bottoms of the cavities, and fans are installed inside a group of cavities.

[0010] Preferably, the inner diameter of the cover plate is the same as the inner diameter of the drying liner, and the end of the drying liner is in contact with the side of the cover plate.

[0011] Preferably: both ends of the outer shell are sleeved with annular sleeves, the inner sides of the annular sleeves are provided with grooves, the annular sleeves are rotatably connected to the outer shell, limiting rings are fixed on the outer shells on both sides of the annular sleeves, a sealing ring is provided between the inner side of the limiting ring and the outer side of the annular sleeve, the grooves inside the two groups of annular sleeves are respectively connected to the two ends of the circulating water pipe, a filtering mechanism is installed at the bottom of one group of annular sleeves, and a drain pipe is installed at the bottom of the other group of annular sleeves.

[0012] Preferably, the outer side of the annular sleeve is fixedly connected to the cover plate, and a support block is fixed to the bottom of the cover plate.

[0013] Preferably: the filtering mechanism includes a water tank, a filter, a water inlet pipe and a collecting tank. The water tank is installed on the outside of the annular sleeve. The water tank is vertically installed with a filter. The water inlet pipe is installed at one end of the water tank. A collecting tank is provided at the bottom of the water tank below the filter. A cleaning mechanism is provided on the side of the filter close to the water inlet pipe.

[0014] Preferably, the inner shape of the collecting tank is funnel-shaped, and a sealing cover is threadedly mounted on the bottom end of the collecting tank.

[0015] Preferably: the cleaning mechanism includes a rotating rod, an impeller and a scraper, the rotating rod is rotatably installed inside the water inlet pipe and extends to the inside of the water tank, the impeller is installed at one end of the rotating rod located inside the water inlet pipe, and the scraper that fits the outer side of the filter is fixed to the end of the rotating rod away from the impeller.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a drying converter for waste heat recovery and reuse, by arranging cover plates at both ends of a drying inner liner and an outer shell, and the inner top of the cover plates is provided with a cavity that is connected to the gap between the drying inner liner and the outer shell, and a dustproof net is installed at the inner bottom of the cavity, and a fan is arranged inside one of the cavities, so that after the drying converter stops using, the two ends of the drying inner liner are blocked, and while cold water takes away the heat on the surface of the drying inner liner through the circulating water pipe, the fan can circulate the hot air inside the drying inner liner to the gap between the drying inner liner and the outer shell, thereby improving the rate of waste heat recovery in the circulating water pipe, and having higher practicality;

[0018] The filtering mechanism composed of a water tank, a filter screen, a water inlet pipe, a rotating rod, an impeller, a scraper and a collecting tank can filter the cold water entering the circulating water pipe. In the process of the cold water entering, the rotating rod on the impeller is pushed to rotate. The rotating rod drives the scraper to rotate against the surface of the filter screen, thereby self-cleaning the filter screen, effectively avoiding blockage of the circulating water pipe and ensuring stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front cross-sectional view of the utility model;

[0020] Figure 2 For the utility model Figure 1 A magnified view of the structure at center;

[0021] Figure 3 This is a filtration structure diagram of the utility model;

[0022] Figure 4 It is the front view of the utility model.

[0023] In the figure: 1. drying inner tank; 2. circulating water pipe; 3. outer shell; 4. cover plate; 5. cavity; 6. dust screen; 7. fan; 8. annular sleeve; 9. filtering mechanism; 10. drain pipe; 11. limiting ring; 12. sealing ring; 13. water tank; 14. filter screen; 15. water inlet pipe; 16. rotating rod; 17. impeller; 18. scraper; 19. collecting tank. DETAILED DESCRIPTION

[0024] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0025] like Figure 1-Figure 4As shown, the present embodiment provides a drying converter for waste heat recovery and reuse, comprising a drying liner 1, the outer side of the drying liner 1 is wound with a circulating water pipe 2 along the length direction, the outer side of the drying liner 1 is sleeved with an outer shell 3, and the drying liner 1 and the outer shell 3 are fixedly connected, a gap is left between the inner side of the outer shell 3 and the outer side of the circulating water pipe 2, cover plates 4 are rotatably installed at both ends of the drying liner 1 and the outer shell 3, cavities 5 are opened at the inner top of the cover plates 4, the cavities 5 are connected to the gaps between the drying liner 1 and the outer shell 3, dustproof nets 6 are installed on the inner bottoms of the cavities 5, and fans 7 are installed inside a group of cavities 5.

[0026] The overall working principle is as follows: after the use of the drying drum is finished, the drying liner 1 is sealed on the outside of the cover plate 4, at which time the drying liner 1 forms a closed space, and then cold water is injected into the inside of the circulating water pipe 2. The water flows through the inside of the circulating water pipe 2 and takes away the heat on the surface of the drying liner 1. At the same time, the fan 7 is started to circulate the hot air inside the drying liner 1 in the cavity 5 and the gap between the liner and the outer shell 3. The hot air heats the water inside the circulating water pipe 2 again, thereby increasing the recovery rate of waste heat.

[0027] In this embodiment, the inner diameter of the cover plate 4 is the same as the inner diameter of the drying liner 1 , and the end of the drying liner 1 is in contact with the side of the cover plate 4 .

[0028] Partial working principle: During use, the inner side of the cover plate 4 is flush with the inner side of the drying liner 1, which is convenient for the discharge of raw materials.

[0029] In this embodiment, both ends of the outer shell 3 are sleeved with an annular sleeve 8, the inner side of the annular sleeve 8 is provided with a groove, the annular sleeve 8 is rotatably connected to the outer shell 3, and a limiting ring 11 is fixed on the outer shell 3 on both sides of the annular sleeve 8. A sealing ring 12 is provided between the inner side of the limiting ring 11 and the outer side of the annular sleeve 8. The grooves inside the two groups of annular sleeves 8 are respectively connected to the two ends of the circulating water pipe 2, a filtering mechanism 9 is installed at the bottom of one group of annular sleeves 8, and a drain pipe 10 is installed at the bottom of the other group of annular sleeves 8.

[0030] Local working principle: when connected to an external water source, the external water pipe is connected to the filtering mechanism 9, and the water source enters the groove inside the annular sleeve 8 after being filtered, and then enters the inside of the circulating water pipe 2. During the operation of the drying converter, the position of the annular sleeve 8 is fixed, and it rotates relative to the outer shell 3 to ensure that the external water pipe is always connected to the circulating water pipe 2. There is no need to connect the circulating water pipe 2 to the water supply every time after shutdown, and the use form is higher. The hot water after waste heat recovery passes through the groove of another set of annular sleeves 8 and is discharged through the drain pipe 10.

[0031] In this embodiment, the outer side of the annular sleeve 8 is fixedly connected to the cover plate 4 , and a support block is fixed to the bottom of the cover plate 4 .

[0032] Local working principle: When the device is in use, the support block contacts the ground to support and position the device. During use, only the drying inner tank 1, the circulating water pipe 2 and the outer shell 3 rotate. Since the annular sleeve 8 is fixedly connected to the cover plate 4, the stable installation of the annular sleeve 8 is ensured.

[0033] In this embodiment, the filtering mechanism 9 includes a water tank 13, a filter screen 14, a water inlet pipe 15 and a collecting tank 19. The water tank 13 is installed on the outside of the annular sleeve 8. The filter screen 14 is vertically installed on the water tank 13. The water inlet pipe 15 is installed at one end of the water tank 13. The collecting tank 19 is provided at the bottom of the water tank 13 below the filter screen 14, and a cleaning mechanism is provided on the side of the filter screen 14 close to the water inlet pipe 15.

[0034] Partial working principle: cold water enters the water tank 13 from the water inlet pipe 15, and then enters the groove of the annular sleeve 8 after being filtered by the filter 14, ensuring the cleanliness of the cold water and avoiding the blockage of the circulating water pipe 2.

[0035] In this embodiment, the inner shape of the collecting tank 19 is funnel-shaped, and a sealing cover is threadedly mounted on the bottom end of the collecting tank 19 .

[0036] Partial working principle: Due to the funnel-shaped design of the bottom of the collecting tank 19, the mud and sand falling from the filter screen 14 will gather at the bottom of the collecting tank 19, and during the cleaning process, it can be cleaned by simply opening the sealing cover.

[0037] In this embodiment, the cleaning mechanism includes a rotating rod 16, an impeller 17 and a scraper 18. The rotating rod 16 is rotatably installed inside the water inlet pipe 15 and extends to the inside of the water tank 13. The impeller 17 is installed at one end of the rotating rod 16 located inside the water inlet pipe 15, and the scraper 18 that fits with the outer side of the filter 14 is fixed to the end of the rotating rod 16 away from the impeller 17.

[0038] Partial working principle: When cold water enters the water tank 13 through the water inlet pipe 15, the thrust of the water drives the impeller 17 to rotate. The impeller 17 drives the scraper 18 to slide on the surface of the filter 14 through the rotating rod 16 to sweep away the impurities adhering to the surface of the filter 14.

[0039] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A drying converter for waste heat recovery and reuse, characterized in that: The invention comprises a drying liner (1), wherein a circulating water pipe (2) is wound around the outer side of the drying liner (1) along the length direction, an outer shell (3) is sleeved on the outer side of the drying liner (1), and the drying liner (1) and the outer shell (3) are fixedly connected, a gap is left between the inner side of the outer shell (3) and the outer side of the circulating water pipe (2), a cover plate (4) is rotatably mounted on both ends of the drying liner (1) and the outer shell (3), a cavity (5) is opened on the inner top of the cover plate (4), the cavity (5) is connected to the gap between the drying liner (1) and the outer shell (3), a dustproof net (6) is installed on the inner bottom of each cavity (5), and a fan (7) is installed inside a group of cavities (5).

2. The drying converter for waste heat recovery and reuse according to claim 1, characterized in that: The inner diameter of the cover plate (4) is the same as the inner diameter of the drying liner (1), and the end of the drying liner (1) is in contact with the side of the cover plate (4).

3. The drying converter for waste heat recovery and reuse according to claim 1, characterized in that: Both ends of the outer shell (3) are sleeved with annular sleeves (8), the inner sides of the annular sleeves (8) are provided with grooves, the annular sleeves (8) are rotatably connected to the outer shell (3), limiting rings (11) are fixed on the outer shell (3) on both sides of the annular sleeves (8), a sealing ring (12) is provided between the inner side of the limiting ring (11) and the outer side of the annular sleeve (8), the grooves inside the two groups of annular sleeves (8) are respectively connected to the two ends of the circulating water pipe (2), a filtering mechanism (9) is installed at the bottom of one group of annular sleeves (8), and a drainage pipe (10) is installed at the bottom of the other group of annular sleeves (8).

4. The drying converter for waste heat recovery and reuse according to claim 3 is characterized in that: The outer side of the annular sleeve (8) is fixedly connected to the cover plate (4), and a support block is fixed to the bottom of the cover plate (4).

5. The drying converter for waste heat recovery and reuse according to claim 3, characterized in that: The filtering mechanism (9) comprises a water tank (13), a filter screen (14), a water inlet pipe (15) and a collecting tank (19); the water tank (13) is installed outside the annular sleeve (8); the filter screen (14) is vertically installed on the water tank (13); the water inlet pipe (15) is installed at one end of the water tank (13); the collecting tank (19) is provided at the bottom of the water tank (13) below the filter screen (14); and a cleaning mechanism is provided on one side of the filter screen (14) close to the water inlet pipe (15).

6. The drying converter for waste heat recovery and reuse according to claim 5, characterized in that: The inner shape of the collecting tank (19) is funnel-shaped, and a sealing cover is threadedly mounted on the bottom end of the collecting tank (19).

7. A drying converter for waste heat recovery and reuse according to claim 5 or 6, characterized in that: The cleaning mechanism comprises a rotating rod (16), an impeller (17) and a scraper (18); the rotating rod (16) is rotatably mounted inside the water inlet pipe (15) and extends into the water tank (13); an end of the rotating rod (16) located inside the water inlet pipe (15) is mounted with the impeller (17); an end of the rotating rod (16) away from the impeller (17) is fixed with the scraper (18) which is in contact with the outer side of the filter screen (14).

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