Waste heat recovery structure of drying machine

Abstract

The utility model discloses a dryer waste heat recovery structure which is applied to the field of waste heat recovery and comprises a base, a first side plate and a second side plate are fixedly installed at the two ends of the top of the base respectively, and a heat exchange pipe penetrating through the first side plate to the other side of the second side plate is arranged on one side of the first side plate. When the waste heat recovery structure is used, normal-temperature water enters the inner side of the sealing cover through the heat exchange pipe, meanwhile, the air inlet pipe is communicated with the air outlet end of an external drying machine, and gas with heat enters the inner side of the sealing cover and makes full contact with the heat exchange pipe. When the internal heat exchange tube needs to be maintained, the sealing cover can be detached preferentially, then the bolts are detached, and the first fixing plate and the second fixing plate are moved transversely. At the moment, dirt on the surface of the heat exchange pipe can be wiped, the heat exchange capacity is prevented from being reduced, and the use flexibility of the heat exchange pipe is guaranteed through the arrangement.

Description

Technical Field

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

[0002] A dryer is a mechanical device that uses heat to reduce the moisture content of materials, typically used for drying. The dryer heats the material, vaporizing moisture to produce a solid product with a specified moisture content. The purpose of drying is to prepare the material for use or further processing. After the dryer has completed its operation, a significant amount of heat remains within the machine. To avoid wasting this heat, a heat recovery device is typically installed to recycle the residual heat within the dryer.

[0003] At present, the Chinese utility model with the announcement number CN218884469U belongs to the field of waste heat recovery technology, specifically a boiling dryer waste heat recovery structure, including a base, a fixed plate, a movable plate and a fixed screw rod, the surface of the base is provided with a fixed plate, a movable plate is provided between two groups of the fixed plates, the top and bottom of the movable plate are movably plugged with a fixed screw rod, one end of the fixed screw rod passes through one of the groups of fixed plates, positioning grooves are provided on both sides of the fixed plate, and a heat insulation cover is movably installed above the movable plate, and positioning seats are symmetrically provided on both sides of the inner wall of the heat insulation cover, the positioning seats and the positioning grooves are plugged into each other, and the inner wall of the heat insulation cover is provided with heat insulation cotton; the new model can splice the seat sealing structure through the mutual cooperation of the fixed plate and the heat insulation cover, and cover the movable plate in its inner cavity, and at the same time, the inner wall of the heat insulation cover is provided with heat insulation cotton, which can lock the heat transferred to the movable plate, reduce heat loss, and improve the recovery rate of waste heat.

[0004] When the waste heat recovery structure is in use and the filter element needs to be replaced, the connection at one end of the flange needs to be removed first, and the external water supply pipe or air supply pipe needs to be moved to provide space for the filter element to be removed. This operation is inconvenient. At the same time, when the pipe body is blocked, it is not convenient to maintain and repair the internal situation. Utility Model Content

[0005] The purpose of the utility model is to provide a waste heat recovery structure for a dryer, which has the advantages of facilitating the replacement of the filter element, reducing the complexity of disassembly, and facilitating the maintenance and disassembly of the heat exchange tube, thereby increasing the flexibility of use.

[0006] The above technical objectives of the present utility model are achieved through the following technical solutions: a dryer waste heat recovery structure, including a base, side panels 1 and 2 are fixedly installed at both ends of the top of the base, one side of the side panel 1 is provided with a heat exchange pipe that passes through the side panel 1 to the other side of the side panel 2, and the surfaces of the heat exchange pipe are respectively sleeved with fixed plates 1 and 2, both ends of the fixed plate 1 and the fixed plate 2 are fixedly installed with sliders, and the tops of both ends of the fixed plate 1 and the fixed plate 2 are fixedly installed with mounting plates, one side of the side panel 1 is connected with an air intake pipe, and one end of the air intake pipe and the heat exchange pipe are provided with a pipe body, and flange 1 and flange 2 are fixedly installed at both ends of the pipe body, and the top of the pipe body is connected with a square pipe, and the interior of the pipe body is filled with a filter element that passes through the interior of the square pipe.

[0007] In this waste heat recovery structure, the external water supply is securely connected to the heat exchange tube at one end via flange 2. Normal-temperature water flows through the heat exchange tube into the sealed housing. Simultaneously, the air inlet pipe connects to the air outlet of the external dryer, allowing heated gas to enter the sealed housing. This gas then passes through retaining plates 1 and 2, achieving full contact with the heat exchange tube, transferring heat to the water. All the heated water is then discharged from the other end of the heat exchange tube. Cooled gas is then discharged through the air outlet pipe. To maintain the internal heat exchange tube, the sealed housing is removed first, followed by the bolts. Retaining plates 1 and 2 are then moved laterally. This frees the arcuate groove from the heat exchange tube surface. The slider slides within the groove, cooperating with retaining plates 1 and 2 to guide the side panels 1 and 2. This allows the heat exchange tube surface to be cleaned to prevent degradation of heat exchange capacity. This arrangement ensures the flexibility of the heat exchange tube. At the same time, when using the heat exchange tube and the air intake pipe, the gas and water will preferentially enter the pipe body and be filtered by the filter element, thereby reducing the impurities in the gas and water. When the filter element becomes saturated, the flange frame 2 can be removed and the filter element can be moved using the pull ring, so that the filter element gradually separates from the pipe body and the square tube. This arrangement facilitates the replacement of the filter element. During the replacement and removal of the filter element, the connection with the external pipe body is not affected, which brings convenience to use.

[0008] The present invention is further configured such that a sliding groove cooperating with the sliding block is provided inside the side panel 1 and the side panel 2, and an air outlet pipe is connected to one side of the side panel 2.

[0009] The above technical solution is adopted: through the sliding connection between the slide groove and the slider, the fixed plate 1 and the fixed plate 2 are slidably guided on one side of the side plate 1 and the side plate 2, and the air outlet pipe cooperates with the gas inside the sealing cover to discharge.

[0010] The present invention is further configured such that one side of the two mounting plates is respectively provided with bolts penetrating the mounting plates to the inside of the first side plate and the second side plate.

[0011] The above technical solution is adopted: the mounting plate is fastened to the side panel 1 and the side panel 2 respectively by bolts.

[0012] The utility model is further configured such that sealing covers bolted to each other are sleeved on the surfaces of the side panel one and the side panel two, and thermal insulation cotton is fixedly adhered to the inner side of the sealing cover.

[0013] The above technical solution is adopted: the sealing and water-permeable effect of the structure is achieved through the sealing cover, and the heat preservation of the sealing cover is achieved through the heat-insulating cotton.

[0014] The present invention is further configured such that the opposing surfaces of the fixing plate 1 and the fixing plate 2 are both provided with arc grooves for use with each other.

[0015] The above technical solution is adopted: the arc-shaped groove is used to facilitate the accommodation and installation of the heat exchange tube.

[0016] The present invention is further configured such that both ends of one side of the second fixing plate are fixedly mounted with a clamping block penetrating into the interior of the first fixing plate, and the interior of the first fixing plate is provided with a clamping groove for cooperating with the clamping block.

[0017] The above technical solution is adopted: by using the clamping block and the clamping groove, it is convenient to coordinate the clamping and positioning of the fixing plate 2 and the fixing plate 1.

[0018] The present invention is further configured such that the two flanges are bolted to one end of the air intake pipe and the heat exchange pipe respectively, and a pull ring is fixedly installed on the top of the filter element.

[0019] The above technical solution is adopted: the flange is matched with the pipe body for installation and fastening, and the pull ring is matched with the filter element for movement.

[0020] The present invention is further configured such that a flange frame 1 is fixedly sleeved on the surface of the square tube, and a flange frame 2 is bolted to the top of the flange frame 1.

[0021] The above technical solution is adopted: by connecting the flange frame 1 and the flange frame 2, it is convenient to seal the other pipe and the inside of the pipe body, and it is convenient to replace and remove the filter element.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. In the use of the waste heat recovery structure of the present invention, water at room temperature will enter the inner side of the sealing cover through the heat exchange tube. At the same time, the air inlet pipe is connected to the air outlet of the external dryer, and the hot gas will enter the inner side of the sealing cover and fully contact the heat exchange tube. When the internal heat exchange tube needs to be maintained, the sealing cover can be removed first, and then the bolts can be removed, and the fixing plate 1 and the fixing plate 2 can be moved horizontally. At this time, the surface dirt of the heat exchange tube can be wiped to avoid a decrease in its heat exchange capacity. This setting ensures the flexibility of the use of the heat exchange tube.

[0024] 2. When using the heat exchange tube and air intake pipe, the present invention allows gas and water to enter the tube body first and be filtered by the filter element, thereby reducing impurities in the gas and water. When the filter element becomes saturated, the flange frame 2 can be removed, and the filter element can be moved using the pull ring, gradually separating the filter element from the tube body and the square tube. This arrangement facilitates the replacement of the filter element, and the filter element does not affect the connection with the external tube body during replacement and removal, bringing convenience to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the sealing cover structure of the utility model;

[0027] Figure 3 This is a schematic front cross-sectional view of the present utility model;

[0028] Figure 4 It is a top cross-sectional schematic diagram of the fixing plate 1 and the fixing plate 2 of the utility model;

[0029] Figure 5 This utility model Figure 3 A in the middle is an enlarged schematic diagram;

[0030] Figure 6 It is a schematic diagram of the local structure of the utility model;

[0031] Figure 7 It is a schematic diagram of the partial structure decomposition of the utility model.

[0032] Figure numerals: 1. base; 2. side panel 1; 3. side panel 2; 4. heat exchange tube; 5. air inlet pipe; 6. air outlet pipe; 7. sealing cover; 8. fixing plate 1; 9. fixing plate 2; 10. arc groove; 11. clamping block; 12. clamping groove; 13. slider; 14. slide groove; 15. mounting plate; 16. pipe body; 17. flange 1; 18. flange 2; 19. flange frame 1; 20. flange frame 2; 21. square tube; 22. filter element; 23. pull ring; 24. thermal insulation cotton; 25. bolt. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings.

[0034] Example 1:

[0035] refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 A waste heat recovery structure for a dryer includes a base 1, with side panels 1 2 and 2 3 fixedly mounted on both ends of the top of the base 1, a heat exchange tube 4 penetrating through the side panel 1 2 to the other side of the side panel 2 3 on one side of the side panel 1 2, a fixed plate 1 8 and a fixed plate 2 9 respectively sleeved on the surface of the heat exchange tube 4, sliders 13 fixedly mounted on both ends of the fixed plate 1 8 and the fixed plate 2 9, and mounting plates 15 fixedly mounted on the tops of both ends of the fixed plate 1 8 and the fixed plate 2 9. When the waste heat recovery structure is in use, water at room temperature will enter the inside of the sealing cover 7 through the heat exchange tube 4, while the air inlet pipe 5 is connected to the air outlet of the external dryer, and the hot gas will enter the inside of the sealing cover 7 and fully contact the heat exchange tube 4. When the internal heat exchange tube 4 needs to be maintained, the sealing cover 7 can be removed first, and then the bolts 25 can be removed to move the fixed plate 1 8 and the fixed plate 2 9 laterally. At this time, the dirt on the surface of the heat exchange tube 4 can be wiped to avoid a decrease in its heat exchange capacity. This setting ensures the flexibility of use of the heat exchange tube 4.

[0036] refer to Figure 5 The inside of side panel 1 2 and side panel 2 3 are both provided with a sliding groove 14 for cooperating with the slider 13 for sliding. One side of side panel 2 3 is connected with an outlet pipe 6, which is connected to the sliding of the slider 13 through the sliding groove 14, and cooperates with the fixed plate 1 8 and the fixed plate 2 9 to slide and guide on one side of side panel 1 2 and side panel 2 3. The outlet pipe 6 cooperates with the gas inside the sealing cover 7 to discharge.

[0037] refer to Figure 5 One side of the two mounting plates 15 is respectively provided with bolts 25 that penetrate the mounting plates 15 to the inside of the side plates 1 2 and 2 3 , and the mounting plates 15 are fastened to the side plates 1 2 and 2 3 respectively by the bolts 25 .

[0038] refer to Figure 2 The surfaces of side panel 1 2 and side panel 2 3 are sleeved with sealing covers 7 bolted to each other, and the inner side of the sealing cover 7 is fixedly adhered with thermal insulation cotton 24. The sealing cover 7 realizes the sealing and water-permeable effect of the structure, and the thermal insulation property of the sealing cover 7 is realized by the thermal insulation cotton 24.

[0039] refer to Figure 4 The opposite surfaces of the fixing plate 1 8 and the fixing plate 2 9 are provided with arc grooves 10 for use with each other, and the arc grooves 10 facilitate the accommodation and installation of the heat exchange tube 4.

[0040] refer to Figure 4 Both ends of one side of the fixing plate 2 9 are fixedly installed with a clamping block 11 that penetrates into the interior of the fixing plate 1 8. The interior of the fixing plate 1 8 is provided with a clamping groove 12 for cooperating with the clamping block 11. The clamping block 11 and the clamping groove 12 are clamped together to facilitate the clamping and positioning of the fixing plate 2 9 and the fixing plate 1 8.

[0041] Brief description of the usage process: When using this waste heat recovery structure, the external water supply equipment is connected and fastened to the tube body 16 at one end of the heat exchange tube 4 through the flange 2 18. The normal temperature water will enter the inner side of the sealing cover 7 through the heat exchange tube 4. At the same time, the air inlet pipe 5 is connected to the air outlet end of the external dryer. The hot gas will enter the inner side of the sealing cover 7. The gas will pass through the fixed plate 1 8 and the fixed plate 2 9 respectively, and fully contact with the heat exchange tube 4, so as to achieve the effect of transferring heat to the water. The water with heat will be discharged from the other end of the heat exchange tube 4. The cooled gas will be discharged through the outlet pipe 6. When the internal heat exchange tube 4 needs to be maintained, the sealing cover 7 can be removed first, and then the bolts 25 can be removed, and the fixed plate 1 8 and the fixed plate 2 9 can be moved horizontally. The arc groove 10 is separated from the surface of the heat exchange tube 4, and the slider 13 slides inside the slide groove 14, cooperating with the fixed plate 1 8 and the fixed plate 2 9 to slide and guide on the side of the side plate 1 2 and the side plate 2 3. At this time, the surface dirt of the heat exchange tube 4 can be wiped to avoid a decrease in its heat exchange capacity. This setting ensures the flexibility of use of the heat exchange tube 4.

[0042] Example 2:

[0043] refer to Figure 1 、 Figure 3 、 Figure 6 and Figure 7 A waste heat recovery structure for a dryer includes a base 1, a side panel 2 connected to an air intake pipe 5, one end of the air intake pipe 5 and the heat exchange pipe 4 are both provided with a pipe body 16, the two ends of the pipe body 16 are respectively fixedly mounted with a flange 17 and a flange 2 18, the top of the pipe body 16 is connected to a square pipe 21, the interior of the pipe body 16 is filled with a filter element 22 that penetrates the interior of the square pipe 21, when the heat exchange pipe 4 and the air intake pipe 5 are in use, gas and water will preferentially enter the pipe body 16 and be filtered by the filter element 22, thereby achieving the effect of reducing impurities in the gas and water. When the filter element 22 becomes saturated, the flange frame 20 can be removed, and the filter element 22 can be moved by the pull ring 23, so that the filter element 22 gradually separates from the pipe body 16 and the square pipe 21. This arrangement facilitates the convenience of replacing the filter element 22. The filter element 22 does not affect the connection with the external pipe body 16 during replacement and removal, bringing convenience to use.

[0044] refer to Figure 7The two flanges 17 are bolted to each other at one end of the air inlet pipe 5 and the heat exchange pipe 4 respectively. A pull ring 23 is fixedly installed on the top of the filter element 22. The flange 17 is cooperated with the pipe body 16 for installation and tightening, and the pull ring 23 cooperates with the filter element 22 for movement.

[0045] refer to Figure 6 The surface of the square tube 21 is fixedly sleeved with a flange frame 19, and the top of the flange frame 19 is bolted with a flange frame 20. Through the connection between the flange frame 19 and the flange frame 20, it is convenient to seal the square tube 21 and the inside of the tube body 16, and it is convenient to cooperate with the replacement of the filter element 22 to achieve disassembly.

[0046] Brief description of the usage process: During operation of the heat exchange tube 4 and the air inlet pipe 5, gas and water will preferentially enter the tube body 16 and be filtered by the filter element 22, thereby reducing impurities in the gas and water. When the filter element 22 becomes saturated, the flange frame 20 can be removed, and the filter element 22 can be moved using the pull ring 23, gradually separating the filter element 22 from the tube body 16 and the square tube 21. This arrangement facilitates the replacement of the filter element 22. During replacement and removal, the filter element 22 does not affect the connection with the external tube body 16, bringing convenience to use.

[0047] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A dryer waste heat recovery structure, comprising a base (1), characterized in that: The two ends of the top of the base (1) are respectively fixedly mounted with a side plate 1 (2) and a side plate 2 (3); one side of the side plate 1 (2) is provided with a heat exchange tube (4) that passes through the side plate 1 (2) to the other side of the side plate 2 (3); the surface of the heat exchange tube (4) is respectively sleeved with a fixed plate 1 (8) and a fixed plate 2 (9); both ends of the fixed plate 1 (8) and the fixed plate 2 (9) are fixedly mounted with a slider (13); both ends of the fixed plate 1 (8) and the fixed plate 2 (9) are provided with a heat exchange tube (4) that passes through the side plate 1 (2) to the other side of the side plate 2 (3); A mounting plate (15) is fixedly installed on the top of each side plate (2), an air intake pipe (5) is connected to one side of the side plate (2), a tube body (16) is provided at one end of each of the air intake pipe (5) and the heat exchange tube (4), a flange plate (17) and a flange plate (18) are fixedly installed at both ends of the tube body (16), a square tube (21) is connected to the top of the tube body (16), and a filter element (22) is filled in the interior of the square tube (21).

2. The dryer waste heat recovery structure according to claim 1, characterized in that: The inside of the side panel 1 (2) and the side panel 2 (3) are both provided with a sliding groove (14) for cooperating with the sliding block (13) for sliding, and one side of the side panel 2 (3) is connected to an air outlet pipe (6).

3. The dryer waste heat recovery structure according to claim 1, characterized in that: One side of the two mounting plates (15) is respectively provided with bolts (25) penetrating the mounting plates (15) to the inside of the first side plate (2) and the second side plate (3).

4. The dryer waste heat recovery structure according to claim 1, characterized in that: The surfaces of the side panel 1 (2) and the side panel 2 (3) are sleeved with mutually bolted sealing covers (7), and the inner side of the sealing cover (7) is fixedly adhered with thermal insulation cotton (24).

5. The dryer waste heat recovery structure according to claim 1, characterized in that: The opposing surfaces of the fixing plate 1 (8) and the fixing plate 2 (9) are both provided with arc-shaped grooves (10) for use therewith.

6. The dryer waste heat recovery structure according to claim 1, characterized in that: Both ends of one side of the second fixing plate (9) are fixedly mounted with a clamping block (11) that penetrates into the interior of the first fixing plate (8), and the interior of the first fixing plate (8) is provided with a clamping groove (12) for clamping with the clamping block (11).

7. The dryer waste heat recovery structure according to claim 1, characterized in that: The two flanges (17) are bolted to one end of the air inlet pipe (5) and the heat exchange pipe (4) respectively, and a pull ring (23) is fixedly installed on the top of the filter element (22).

8. The dryer waste heat recovery structure according to claim 1, characterized in that: The surface of the square tube (21) is fixedly sleeved with a flange frame 1 (19), and the top of the flange frame 1 (19) is bolted with a flange frame 2 (20).

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