A drying machine with heat recovery function

Abstract

The present invention discloses a drying machine with a heat recovery function, which relates to the technical field of drying machines, and is designed to solve the problem of large energy consumption in the process of drying objects in existing drying machines. A preheating device is provided on one side of the drying device, a fixed box is provided between the drying device and the preheating device, a heat exchange plate is fixedly provided at the upper end of the drying device, heat exchange fins are fixedly provided at the upper and lower ends of the heat exchange plate, a heat exchange serpentine water pipe is installed between the heat exchange fins at the upper end of the heat exchange plate, a heat exchange air pipe is installed between the heat exchange fins at the lower end of the heat exchange plate, an air inlet is provided at the upper end of one side of the drying device, a first heat resistance plate is provided above the heat exchange plate, a second heat resistance plate is provided below the heat exchange plate, a first heat release serpentine pipe is fixedly provided on one side of the drying device, a second heat release serpentine pipe is fixedly provided on one side of the preheating device, and a water storage tank is provided inside the fixed box.

Description

Technical Field

[0001] The invention relates to the technical field of dryers, in particular to a dryer with a heat recovery function. Background Art

[0002] Dryers can be divided into two types: industrial and civil. Industrial dryers are also called drying equipment or dryers. Under the suction of the fan, the fresh cold air outside directly passes through the air inlet and exchanges heat with the heater to become dry hot air, and then exchanges heat with the object placed in the cavity before being discharged from the body. The object placed in the cavity gradually evaporates and dries under the action of dry hot air. Since the evaporation of water in the object requires the absorption and consumption of heat energy, the exhaust temperature of the dryer gradually increases as the water content in the object decreases.

[0003] However, in order to ensure the drying effect of objects, the existing dryers often provide a large amount of heat energy. Although it can achieve rapid air drying of objects, this method will cause a lot of energy consumption, which does not meet the requirements of energy saving and environmental protection. It also increases the processing cost of the enterprise. Therefore, it does not meet the existing needs. In this regard, we propose a dryer with heat recovery function. Summary of the invention

[0004] The object of the present invention is to provide a dryer with a heat recovery function to solve the problem of high energy consumption in the process of drying objects by the dryer mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a dryer with heat recovery function, comprising a drying device, a preheating device is arranged on one side of the drying device, a fixed box is arranged between the drying device and the preheating device, a heat exchange plate is fixedly arranged at the upper end inside the drying device, heat exchange fins are fixedly arranged at the upper and lower ends of the heat exchange plate, a plurality of heat exchange fins are arranged, and the heat exchange fins are distributed in sequence, a heat exchange serpentine water pipe is installed between the heat exchange fins at the upper ends of the heat exchange plates, a heat exchange air pipe is installed between the heat exchange fins at the lower ends of the heat exchange plates, an air inlet is arranged at the upper end of one side of the drying device, and the air inlet is connected with the heat exchange air pipe, a first heat resistance plate is arranged above the heat exchange plate, a second heat resistance plate is arranged below the heat exchange plate, a first heat release serpentine pipe is fixedly arranged on one side inside the drying device, a second heat release serpentine pipe is fixedly arranged on one side inside the preheating device, and a water storage tank is arranged inside the fixed box.

[0006] Preferably, the outside of the first heat-releasing serpentine tube and the second heat-releasing serpentine tube are both provided with heat-conducting plates, and there are several heat-conducting plates. The first heat-releasing serpentine tube and the heat-exchanging serpentine water pipe are an integrated structure. A first circulating pump is installed above the water tank, and one end of the first circulating pump is sealed and fixed to the water tank through a connecting pipe, the other end of the first circulating pump is sealed and fixed to one end of the heat-exchanging serpentine water pipe, and the other end of the heat-exchanging serpentine water pipe is connected to the water tank. A first temperature sensor is fixedly installed on the upper end of one side inside the drying device.

[0007] Preferably, a second circulation pump is installed below the water tank, one end of the second circulation pump is sealed and fixed to the water tank through a connecting pipe, the other end of the second circulation pump is sealed to one end of a second heat release serpentine tube, the other end of the second heat release serpentine tube is connected to the water tank, and a second temperature sensor is fixedly installed at the front end of the water tank, and the detection end of the second temperature sensor extends to the interior of the water tank.

[0008] Preferably, a gas supply pipe is provided on the other side of the drying device, and the gas supply pipe is sealed and fixed to the heat exchange air pipe. A preheating air outlet pipe and a preheating air inlet pipe are respectively provided at the lower end of the gas supply pipe. The preheating air outlet pipe extends to the interior of the preheating device, and the preheating air inlet pipe extends to the bottom of the drying device.

[0009] Preferably, a fan is installed at the upper end of the preheating air inlet pipe, and the upper end of the preheating air inlet pipe is connected to the fan. A heating plate is installed above the fan, and the heating plate and the drying device are fixed by bolts.

[0010] Preferably, a placement cylinder is installed at the middle position inside the drying device, and one end of the placement cylinder is rotatably connected to the drying device through a bearing, a first motor is fixedly installed on one side of the drying device, and the output end of the first motor is transmission-connected to the other end of the placement cylinder through a coupling.

[0011] Preferably, a placement rack is installed inside the preheating device, and one side of the placement rack is slidably connected to the preheating device, a movable plate is fixedly provided on one side of the placement rack, a sleeve plate is fixedly provided at the lower end of one side inside the preheating device, and one end of the movable plate extends to the inside of the sleeve plate, the movable plate is slidably connected to the sleeve plate, a return spring is fixedly provided between the sleeve plate and the movable plate, a second motor is fixedly provided at the lower end of one side of the preheating device, an eccentric wheel is fixedly provided on the output shaft of the second motor, and one end of the eccentric wheel is in contact with the placement rack.

[0012] Preferably, a plurality of through holes are provided in a rectangular array inside the first heat-resisting plate and the second heat-resisting plate, and the through holes in the first heat-resisting plate and the through holes in the second heat-resisting plate are staggered.

[0013] Preferably, an air outlet is provided at the upper end of the drying device.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention installs a heat exchange serpentine water pipe on the upper end of the heat exchange plate. In the process of drying the object, the hot air lifted upward can exchange heat with the heat exchange plate and the heat exchange sheet, and then transfer the heat to the heat exchange serpentine water pipe through the heat exchange plate and the heat exchange sheet, so that the temperature of the liquid inside the heat exchange serpentine water pipe is increased. Then, under the driving cycle of the first circulation pump, the temperature inside the water storage tank is synchronously increased. The second temperature sensor can detect the temperature of the liquid inside the water storage tank. When the temperature reaches the set value, the second circulation pump is turned on, and the second circulation pump transports the liquid inside the water storage tank to the second heat release serpentine pipe in the preheating device. The heat conductive sheet arranged outside the second heat release serpentine pipe can quickly dissipate the temperature inside the pipe body, thereby exchanging heat with the air inside the preheating device, and increasing the temperature inside the preheating chamber. Then, while the drying device is drying the object, the next batch of drying objects are placed in the preheating device for preheating. Then, in the subsequent drying, on the one hand, the drying efficiency can be improved, and on the other hand, the excessive effect of heat energy can be reduced, which meets the requirements of energy saving and environmental protection.

[0016] 2. The present invention installs a heat exchange air pipe at the lower end of the heat exchange plate. Similarly, during the drying process, the heat exchange air pipe can absorb the heat generated by the heat exchange plate and the heat exchange sheet, and an air inlet is provided at one end of the heat exchange air pipe. The fan on the air inlet can introduce external air into the heat exchange air pipe. The temperature of the air is rapidly increased during the movement of the air, and is respectively transported to the preheating air outlet pipe and the preheating air inlet pipe through the air supply main pipe. The high-temperature air is ejected inside the preheating device through the preheating air outlet pipe, and cooperates with the second heat release serpentine pipe to rapidly heat the inside of the preheating device, further improving the temperature increase of the objects in the preheating device. The preheating air inlet pipe is connected to the air inlet end of the fan, so that the air blown out by the fan is kept at a relatively high temperature, avoiding the air from contacting the heating plate and causing partial heat loss. In this way, the heat recovery efficiency in the drying process is effectively improved, and excessive heat energy loss is reduced.

[0017] 3. The present invention installs a first heat-resisting plate and a second heat-resisting plate at the upper and lower ends of the heat exchange plate respectively, and opens a plurality of through holes in a rectangular array inside the first heat-resisting plate and the second heat-resisting plate. The through holes on the first heat-resisting plate and the through holes on the second heat-resisting plate are staggered. When the high-temperature gas passes through the two heat-resisting plates, it can be blocked, thereby increasing the heat exchange time between the high-temperature air and the heat exchange plate, and further improving the heat energy exchange efficiency.

[0018] 4. The present invention installs a placing cylinder inside the drying device, and the preheated objects are placed inside the placing cylinder. The first motor is turned on, and the output shaft of the first motor drives the placing cylinder to rotate slowly, so that the objects inside are evenly contacted with the high-temperature air at the bottom, thereby accelerating the overall drying efficiency. A placing rack is installed inside the preheating device, and the objects to be preheated are placed on the upper end of the placing rack. The second motor is turned on to drive the eccentric wheel to rotate. The eccentric wheel can contact one side of the bottom of the placing rack with each rotation of the eccentric wheel, and push the placing rack to the other side while contacting. At the same time, under the action of the reset spring, the placing rack can quickly return to its position after the eccentric wheel contacts. In this reciprocating manner, the objects inside the placing rack are vibrated, and the objects are evenly distributed while preheating, thereby preventing individual objects from being unable to be preheated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the heat release serpentine structure of the present invention;

[0021] Figure 3 It is a three-dimensional exploded view of the heat exchange plate and the first heat resistance plate of the present invention;

[0022] Figure 4 A top view of the heating plate of the present invention;

[0023] Figure 5 It is a partial enlarged view of the A area of ​​the present invention.

[0024] In the figure: 1. drying device; 2. heating plate; 3. placing cylinder; 4. heat exchange plate; 5. heat exchange fin; 6. heat exchange serpentine water pipe; 7. first heat release serpentine pipe; 8. heat exchange air pipe; 9. gas transmission main pipe; 10. air inlet; 11. first heat resistance plate; 12. second heat resistance plate; 13. air outlet; 14. fixed box; 15. water storage tank; 16. preheating device; 17. first circulation pump; 18. second circulation pump; 19. first temperature sensor; 20. second temperature sensor; 21. second heat release serpentine pipe; 22. preheating air outlet pipe; 23. first motor; 24. placing rack; 25. second motor; 26. eccentric wheel; 27. heat conductive sheet; 28. through hole; 29. ​​preheating air inlet pipe; 30. sleeve plate; 31. movable plate; 32. reset spring; 33. fan. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-5An embodiment of the present invention is as follows: a drying machine with heat recovery function, comprising a drying device 1, a preheating device 16 is arranged on one side of the drying device 1, a fixing box 14 is arranged between the drying device 1 and the preheating device 16, a heat exchange plate 4 is fixedly arranged at the upper end of the drying device 1, heat exchange fins 5 are fixedly arranged at the upper and lower ends of the heat exchange plate 4, a plurality of heat exchange fins 5 are arranged, and the heat exchange fins 5 are distributed in sequence, and a heat exchange serpentine water pipe 6 is installed between the heat exchange fins 5 at the upper end of the heat exchange plate 4, A heat exchange air pipe 8 is installed between the heat exchange sheets 5 at the lower end of the heat exchange plate 4, an air inlet 10 is provided at the upper end of one side of the drying device 1, and the air inlet 10 is communicated with the heat exchange air pipe 8, a first heat resistance plate 11 is provided above the heat exchange plate 4, a second heat resistance plate 12 is provided below the heat exchange plate 4, a first heat release serpentine tube 7 is fixedly provided on one side inside the drying device 1, a second heat release serpentine tube 21 is fixedly provided on one side inside the preheating device 16, and a water storage tank 15 is provided inside the fixed box 14.

[0027] Furthermore, the outside of the first heat-releasing serpentine tube 7 and the second heat-releasing serpentine tube 21 are both provided with heat-conducting plates 27, and there are several heat-conducting plates 27. The first heat-releasing serpentine tube 7 and the heat-exchanging serpentine water pipe 6 are an integrated structure. A first circulating pump 17 is installed above the water tank 15, and one end of the first circulating pump 17 is sealed and fixed to the water tank 15 through a connecting pipe, and the other end of the first circulating pump 17 is sealed and fixed to one end of the heat-exchanging serpentine water pipe 6, and the other end of the heat-exchanging serpentine water pipe 6 is connected to the water tank 15. A first temperature sensor 19 is fixedly installed on the upper end of one side inside the drying device 1. The first temperature sensor 19 can detect the temperature inside the drying device 1. When the temperature reaches the set value, the heated liquid is circulated in the first heat-releasing serpentine tube 7 through the first circulating pump 17 to achieve heat preservation inside the drying device 1 and reduce the loss of heat energy while ensuring the drying effect.

[0028] Furthermore, a second circulation pump 18 is installed below the water tank 15, one end of the second circulation pump 18 is sealed and fixed to the water tank 15 through a connecting pipe, the other end of the second circulation pump 18 is sealed to one end of the second heat release serpentine tube 21, the other end of the second heat release serpentine tube 21 is connected to the water tank 15, and a second temperature sensor 20 is fixedly installed at the front end of the water tank 15, and the detection end of the second temperature sensor 20 extends to the inside of the water tank 15, which can improve the drying efficiency on the one hand, and reduce the excessive effect of heat energy on the other hand, meeting the requirements of energy saving and environmental protection.

[0029] Furthermore, a gas main pipe 9 is provided on the other side of the drying device 1, and the gas main pipe 9 is sealed and fixed to the heat exchange air pipe 8. A preheating air outlet pipe 22 and a preheating air inlet pipe 29 are respectively provided at the lower end of the gas main pipe 9. The preheating air outlet pipe 22 extends to the interior of the preheating device 16, and the preheating air inlet pipe 29 extends to the bottom of the drying device 1. High-temperature air is ejected from the interior of the preheating device 16 through the preheating air outlet pipe 22, and cooperates with the second heat release serpentine pipe 21 to quickly heat the interior of the preheating device 16.

[0030] Furthermore, a fan 33 is installed at the upper end of the preheating air intake pipe 29, and the upper end of the preheating air intake pipe 29 is connected to the fan 33. A heating plate 2 is installed above the fan 33, and the heating plate 2 and the drying device 1 are fixed by bolts. The preheating air intake pipe 29 is connected to the air intake end of the fan 33, so that the air blown out by the fan 33 maintains a relatively high temperature, avoiding normal temperature air from contacting the heating plate 2 and causing partial heat loss.

[0031] Furthermore, a placement cylinder 3 is installed at the middle position inside the drying device 1, and one end of the placement cylinder 3 is rotatably connected to the drying device 1 through a bearing, a first motor 23 is fixedly installed on one side of the drying device 1, and the output end of the first motor 23 is connected to the other end of the placement cylinder 3 through a coupling transmission, and the output shaft of the first motor 23 drives the placement cylinder 3 to rotate slowly, so that the objects inside are evenly contacted with the high-temperature air at the bottom, thereby accelerating the overall drying efficiency.

[0032] Furthermore, a placement rack 24 is installed inside the preheating device 16, and one side of the placement rack 24 is slidably connected to the preheating device 16, a movable plate 31 is fixedly provided on one side of the placement rack 24, a sleeve plate 30 is fixedly provided at the lower end of one side inside the preheating device 16, and one end of the movable plate 31 extends to the inside of the sleeve plate 30, the movable plate 31 is slidably connected to the sleeve plate 30, a return spring 32 is fixedly provided between the sleeve plate 30 and the movable plate 31, a second motor 25 is fixedly installed at the lower end of one side of the preheating device 16, an eccentric wheel 26 is fixedly provided on the output shaft of the second motor 25, and one end of the eccentric wheel 26 is in contact with the placement rack 24, and the eccentric wheel 26 can make contact with one side of the bottom of the placement rack 24 every time it rotates one circle, and push the placement rack 24 to the other side while in contact, and under the action of the return spring 32, after the eccentric wheel 26 makes contact, the placement rack 24 can be quickly returned to its position, and the object inside the placement rack 24 can be vibrated in this reciprocating manner.

[0033] Furthermore, a plurality of through holes 28 are provided in a rectangular array inside the first heat resistance plate 11 and the second heat resistance plate 12, and the through holes 28 in the first heat resistance plate 11 and the through holes 28 in the second heat resistance plate 12 are staggered. When the high-temperature gas passes through the two heat resistance plates, it can be blocked, thereby increasing the heat exchange time between the high-temperature air and the heat exchange plate 4, and further improving the heat energy exchange efficiency.

[0034] Furthermore, an air outlet 13 is provided at the upper end of the drying device 1 .

[0035] Working principle: in the process of drying objects, the hot air that rises upward can exchange heat with the heat exchange plate 4 and the heat exchange fin 5, and then transfer the heat to the heat exchange serpentine water pipe 6 through the heat exchange plate 4 and the heat exchange fin 5, so that the temperature of the liquid inside the heat exchange serpentine water pipe 6 is increased. Then, under the driving cycle of the first circulation pump 17, the temperature inside the water storage tank 15 is synchronously increased. The second temperature sensor 20 can detect the temperature of the liquid inside the water storage tank 15. When the temperature reaches the set value, the second circulation pump 18 is turned on. The second circulation pump 18 transports the liquid inside the water storage tank 15 to the second heat release serpentine pipe 21 in the preheating device 16, thereby exchanging heat with the air inside the preheating device 16, thereby increasing the temperature inside the preheating chamber. Then, while the drying device 1 is drying the object, the next The batch of drying objects is placed in the preheating device 16 for preheating. Similarly, during the drying process, the heat exchange air pipe 8 can absorb the heat generated by the heat exchange plate 4 and the heat exchange sheet 5. The fan on the air inlet 10 can introduce external air into the heat exchange air pipe 8. The temperature of the air is rapidly increased during the movement of the air, and is respectively transported to the preheating air outlet pipe 22 and the preheating air inlet pipe 29 through the air supply main pipe 9. The high-temperature air is ejected from the preheating device 16 through the preheating air outlet pipe 22, and cooperates with the second heat release serpentine pipe 21 to quickly heat the interior of the preheating device 16, further improving the temperature of the objects in the preheating device 16. The preheating air inlet pipe 29 is connected to the air inlet end of the fan 33, so that the air blown out by the fan 33 is kept at a high temperature to avoid the air contacting the heating plate and causing the loss of some heat.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A drying machine with heat recovery function, comprising a drying device (1), characterized in that: A preheating device (16) is provided on one side of the drying device (1), a fixed box (14) is provided between the drying device (1) and the preheating device (16), a heat exchange plate (4) is fixedly provided at the upper end of the drying device (1), heat exchange fins (5) are fixedly provided at the upper and lower ends of the heat exchange plate (4), a plurality of heat exchange fins (5) are provided, and the heat exchange fins (5) are distributed in sequence, a heat exchange serpentine water pipe (6) is installed between the heat exchange fins (5) at the upper end of the heat exchange plate (4), a heat exchange air pipe (8) is installed between the heat exchange fins (5) at the lower end of the heat exchange plate (4), an air inlet (10) is provided on the upper end of one side of the drying device (1), and the air inlet (10) is connected to the heat exchange air pipe (8), and a heat exchange plate (4) is provided above the heat exchange plate (4). A first heat-resisting plate (11) is provided, a second heat-resisting plate (12) is provided below the heat-exchange plate (4), a first heat-releasing serpentine tube (7) is fixedly provided on one side of the interior of the drying device (1), a second heat-releasing serpentine tube (21) is fixedly provided on one side of the interior of the preheating device (16), a water storage tank (15) is provided inside the fixing box (14), a gas supply pipe (9) is provided on the other side of the interior of the drying device (1), and the gas supply pipe (9) is sealed and fixed to the heat-exchange gas pipe (8), a preheating gas outlet pipe (22) and a preheating gas inlet pipe (29) are provided at the lower end of the gas supply pipe (9), the preheating gas outlet pipe (22) extends to the interior of the preheating device (16), and the preheating gas inlet pipe (29) extends to the interior of the drying device ( 1), a fan (33) is installed at the upper end of the preheating air inlet pipe (29), and the upper end of the preheating air inlet pipe (29) is connected to the fan (33), a heating plate (2) is installed above the fan (33), and the heating plate (2) is fixed to the drying device (1) by bolts, a placement cylinder (3) is installed at the middle position inside the drying device (1), and one end of the placement cylinder (3) is rotatably connected to the drying device (1) by a bearing, a first motor (23) is fixedly installed on one side of the drying device (1), and the output end of the first motor (23) is connected to the other end of the placement cylinder (3) by a coupling, and the first heat release serpentine tube (7) and the second heat release serpentine tube (21) are both provided with heat conducting sheets (27) on the outside. , and a plurality of heat conducting sheets (27) are provided, the first heat releasing serpentine tube (7) and the heat exchanging serpentine water tube (6) are an integrated structure, a first circulating pump (17) is installed above the water storage tank (15), and one end of the first circulating pump (17) is sealed and fixed to the water storage tank (15) through a connecting pipe, the other end of the first circulating pump (17) is sealed and fixed to one end of the heat exchanging serpentine water tube (6), and the other end of the heat exchanging serpentine water tube (6) is connected to the water storage tank (15), a first temperature sensor (19) is fixedly installed at the upper end of one side inside the drying device (1), a second circulating pump (18) is installed below the water storage tank (15), and one end of the second circulating pump (18) is sealed and fixed to the water storage tank (15) through a connecting pipe,The other end of the second circulation pump (18) is sealed to one end of the second heat release serpentine tube (21), and the other end of the second heat release serpentine tube (21) is connected to the water storage tank (15). A second temperature sensor (20) is fixedly mounted at the front end of the water storage tank (15), and a detection end of the second temperature sensor (20) extends into the interior of the water storage tank (15).

2. A dryer with heat recovery function according to claim 1, characterized in that: A placement rack (24) is installed inside the preheating device (16), and one side of the placement rack (24) is slidably connected to the preheating device (16). A movable plate (31) is fixedly provided on one side of the placement rack (24). A sleeve plate (30) is fixedly provided at the lower end of one side inside the preheating device (16), and one end of the movable plate (31) extends into the interior of the sleeve plate (30). The movable plate (31) is slidably connected to the sleeve plate (30). A return spring (32) is fixedly provided between the sleeve plate (30) and the movable plate (31). A second motor (25) is fixedly installed at the lower end of one side of the preheating device (16). An eccentric wheel (26) is fixedly provided on the output shaft of the second motor (25), and one end of the eccentric wheel (26) is in contact with the placement rack (24).

3. The dryer with heat recovery function according to claim 1, characterized in that: The first heat-resisting plate (11) and the second heat-resisting plate (12) are both provided with a plurality of through holes (28) in a rectangular array, and the through holes (28) in the first heat-resisting plate (11) and the through holes (28) in the second heat-resisting plate (12) are staggered.

4. The dryer with heat recovery function according to claim 1, characterized in that: An air outlet (13) is provided at the upper end of the drying device (1).

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