Waste heat recovery device and method for heat treatment of fixedly-connected fastener

Abstract

The invention belongs to the technical field of heat treatment of fixedly-connected fasteners, and particularly relates to a waste heat recovery device and method for heat treatment of fixedly-connected fasteners, the waste heat recovery device comprises a heat treatment furnace for heat treatment of fixedly-connected fasteners, one side of the heat treatment furnace is provided with a collecting bin, the collecting bin is internally provided with a heating mechanism, and the outer surface of the heating mechanism is provided with a rotating mechanism. According to the waste heat recovery device and method for heat treatment of the fixedly-connected fastener, waste heat gas has certain wind power when entering the movable pipe, so that wind blades are blown to rotate, and the rotation of the wind blades can drive a plurality of rotating bevel gears to rotate; the gear ratio of the power generation bevel gear to the rotating bevel gear enables the rotating bevel gear to drive the power generation bevel gear to rotate rapidly, the connecting shaft of the power generation bevel gear is connected with the rotor of the small generator, and when the power generation bevel gear rotates rapidly, the small generator can be driven to generate power. Electric power generated by the small-sized generator can be transmitted to the small-sized transformer to be used after being intensively boosted.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment of fixed fasteners, and in particular to a waste heat recovery device and method for heat treatment of fixed fasteners. Background Art

[0002] During the heat treatment process, the fasteners will generate a certain amount of heat. This is due to the absorption or release of heat energy during the heating and cooling process. When the fasteners are placed in a heating furnace or other heating equipment, the energy will be converted into heat energy, causing the temperature of the fasteners to gradually increase. This process consumes a considerable amount of electrical energy or fuel energy, and part of the energy will be transferred to the fasteners in the form of heat. After reaching the required heating temperature, the fasteners usually need to be kept at this temperature for a period of time to ensure the temperature uniformity and crystal structure changes inside the material. During this process, the heating equipment needs to continuously input energy to maintain a constant temperature, so heat will continue to be generated. The cooling stage is usually achieved by controlling the cooling rate to achieve the desired organizational structure and performance changes. Rapid cooling or slow cooling will release heat, especially during rapid cooling, the heat release will be more significant, because the heat energy inside the material needs to be quickly dissipated through the cooling medium.

[0003] During the heat treatment process, the fastener is usually heated in a high temperature furnace to change its physical or chemical properties, and then cooled in air or through a quenching medium. A large amount of heat is generated in this process. If it is not recovered, the heat will be lost to the environment. Not only is a large amount of heat wasted in the heat treatment furnace, but its discharge to the outside environment will also cause pollution to the outside environment. Therefore, the present invention solves the shortcomings of the above technical problems. Summary of the invention

[0004] Based on the above-mentioned existing technical problems, the present invention proposes a waste heat recovery device and method for heat treatment of fixed fasteners.

[0005] The present invention proposes a waste heat recovery device for heat treatment of fixed fasteners, comprising a heat treatment furnace for heat treatment of fixed fasteners, the upper surface of the heat treatment furnace is fixedly connected to a support frame, a circulating fan is arranged inside the heat treatment furnace, a driving motor is fixedly installed on the upper surface of the support frame, the outer surface of the output shaft of the driving motor extends to the interior of the heat treatment furnace and is fixedly connected to one side surface of the circulating fan through a coupling, a collecting bin is arranged on one side of the heat treatment furnace, a heating mechanism is arranged inside the collecting bin, and a rotating mechanism is arranged on the outer surface of the heating mechanism.

[0006] The heating mechanism utilizes the waste heat collected in the collection bin to heat the circulating industrial ethanol.

[0007] The rotating mechanism utilizes the waste heat gas entering the collecting bin to drive the rotating mechanism, thereby converting mechanical energy into electrical energy.

[0008] Preferably, a smoke exhaust duct with a solenoid valve is fixedly connected to the lower surface of the heat treatment furnace.

[0009] Through the above technical scheme, the heat treatment of fixed fasteners is a process with high energy consumption, in which a large amount of heat is wasted in the heat treatment furnace. In order to absorb and utilize the wasted heat, the circulation fan is controlled to circulate the waste heat inside the heat treatment furnace, and then the solenoid valve of the smoke exhaust duct is opened, so that the waste heat can be controlled to flow to the collection bin for collection.

[0010] Preferably, the heating mechanism comprises a connecting pipe fixedly connected to the upper surface of the collecting bin, the upper surface of the connecting pipe is fixedly connected to a movable pipe, and the free end of the smoke exhaust pipe is fixedly connected to the interior of the movable pipe.

[0011] Through the above technical solution, in order to increase the circulation time of the waste heat gas and thus facilitate full utilization of the waste heat, the circulation distance of the waste heat gas is increased by setting movable pipes and connecting pipes, so that the waste heat gas reacts during circulation and is fully utilized.

[0012] Preferably, the heating mechanism further comprises a heating tube which passes through the collecting bin and is fixedly connected thereto, the heating tube is L-shaped, and the drainage end thereof extends to the outside of the collecting bin and is provided with another solenoid valve, and the material of the heating tube is copper.

[0013] Through the above technical scheme, in order to utilize the waste heat gas when it circulates, industrial ethanol is input into the heating tube. The boiling point of ethanol is lower than that of water, so it is relatively easy to heat up at room temperature. Copper is a very good thermal conductive material, so the waste heat gas can heat the industrial ethanol in the heating tube. When the industrial ethanol is heated to a sufficient temperature, it is discharged and can be used as a solvent, cleaning agent or reaction medium.

[0014] Preferably, the heating mechanism further comprises a spiral conveying sheet fixedly connected to the interior of the heating tube, and the exterior of the heating tube is provided with a Tesla valve tube whose two ends are fixedly connected to the interior of the heating tube.

[0015] Through the above technical scheme, in order to increase the reaction time between the waste heat gas and the industrial ethanol inside the heating tube, the industrial ethanol is transported by the spiral conveying sheet when circulating inside the heating tube to increase its circulation time. In order to ensure that the industrial ethanol can be heated to a sufficient temperature, a temperature detection sensor is set to detect the temperature of the industrial ethanol in the heating tube and then consider whether to open the solenoid valve to discharge the liquid. If the temperature requirement is not met, the solenoid valve is closed and the circulating industrial ethanol flows into the Tesla valve tube. The material of the Tesla valve tube is copper, which can increase the heating time of the industrial ethanol. The Tesla valve tube uses the movement of the fluid in a channel of a specific geometric shape to limit the flow effect, thereby realizing the circulation of industrial ethanol and allowing it to be fully heated by the waste heat gas.

[0016] Preferably, the rotating mechanism includes a mounting ring rotatably sleeved on the outer surface of the heating tube through a bearing, and the outer surface of the mounting ring is fixedly connected with wind vanes distributed in a circular array through mounting support rods, and the wind vanes are arranged in an arc shape and distributed inside the movable tube.

[0017] Through the above technical solution, the waste heat gas brings a certain wind force when entering the interior of the movable tube. In order to utilize the wind force, a rotatable wind vane is provided on the outer surface of the heating tube, so that when the waste heat gas enters the movable tube, the wind vane can be blown to rotate to realize wind power generation.

[0018] Preferably, the rotating mechanism also includes a rotating bevel gear linearly distributed and rotatably connected to the outer surface of the heating tube through a bearing, and the opposite side surfaces of adjacent rotating bevel gears and the opposite side surfaces of the uppermost rotating bevel gear and the mounting ring are fixedly connected with a linkage rod, and the outer surface of each rotating bevel gear is symmetrically distributed and meshed with a generating bevel gear.

[0019] Through the above technical scheme, in order to realize wind power generation when the wind blades rotate, multiple rotating bevel gears are connected to the mounting ring through a linkage rod, thereby realizing uniform rotation of multiple rotating bevel gears, and the gear ratio between the power generation bevel gear and the rotating bevel gear can enable the rotating bevel gear to drive the power generation bevel gear to rotate quickly, thereby realizing wind power generation.

[0020] Preferably, a plurality of small generators are fixedly mounted on the outer surface of the connecting pipe, the outer surface of the rotor of the small generator is fixedly connected to the connecting shaft corresponding to the generating bevel gear through a coupling, and a small transformer is mounted on the outer surface of the collecting bin, and the small transformer is electrically connected to the plurality of small transformers.

[0021] Through the above technical scheme, in order to generate electricity when the generator bevel gear rotates, the connecting shaft of the generator bevel gear is connected to the rotor of the small generator. When the generator bevel gear rotates rapidly, it can drive the small generator to generate electricity. In order to store the electricity and boost it for use, the electricity generated by the small generator will be transmitted to a small transformer for centralized boosting before use.

[0022] Preferably, the heating tube and the inner wall of the collecting bin are both made of silicate thermal insulation material, an air compressor is fixedly installed on one side of the collecting bin, and the air compressor is connected to the interior of the collecting bin through an air pipe.

[0023] Through the above technical scheme, in order to utilize the waste heat gas absorbed by the collection bin, a working medium, such as a refrigerant, is set inside the collection bin. The absorbed low-temperature heat causes the working medium to evaporate into low-pressure steam, which is then compressed into high-temperature and high-pressure gas by the air compressor. The high-temperature and high-pressure gas can then release heat through the condenser and be used. The heating tube and the inner wall of the collection bin are made of silicate insulation material, which can prevent heat loss.

[0024] The present invention proposes a method for recovering waste heat from a device for heat treatment of a fastener, comprising the following steps:

[0025] S1. After the heat treatment of the fixed fastener is completed, the circulating fan is controlled by driving the motor to circulate the waste heat inside the heat treatment furnace, and then the solenoid valve of the exhaust pipe is opened to control the waste heat to flow to the movable pipe, and then to the collection bin through the connecting pipe for collection and treatment;

[0026] S2. When the waste heat gas is circulating, industrial ethanol is input into the interior of the heating tube. When the industrial ethanol is circulating in the heating tube, it is conveyed by the spiral conveyor sheet to increase its circulation time. Since the heating tube is made of copper, the waste heat gas can heat the industrial ethanol in the heating tube. After the temperature of the industrial ethanol in the heating tube is detected by the existing temperature detection sensor, it is considered whether to open the solenoid valve to discharge the liquid. If the temperature requirement is not met, the solenoid valve is closed, and the circulating industrial ethanol flows into the Tesla valve tube, thereby realizing the circulation of the industrial ethanol, so that it is fully heated by the waste heat gas. After heating to the specified temperature, the solenoid valve is opened to discharge the industrial ethanol from the heating tube and used as a solvent, a cleaning agent or a reaction medium.

[0027] S3. When the waste heat gas enters the interior of the movable tube, it carries a certain wind force, so that the wind blades can be blown to rotate under the support of the mounting ring, and the linkage rod connects the multiple rotating bevel gears with the mounting ring, so that the rotation of the wind blades can drive the multiple rotating bevel gears to rotate;

[0028] S4. The gear ratio of the generating bevel gear and the rotating bevel gear can make the rotating bevel gear drive the generating bevel gear to rotate quickly, and the connecting shaft of the generating bevel gear is connected to the rotor of the small generator. When the generating bevel gear rotates quickly, it can drive the small generator to generate electricity. The electricity generated by the small generator will be transmitted to the small transformer for centralized boosting and then used;

[0029] S5. A refrigerant working medium is set inside the collection bin. The low-temperature waste heat gas absorbed causes the working medium to evaporate into low-pressure steam, which is then compressed into high-temperature and high-pressure gas by an air compressor. The high-temperature and high-pressure gas can then release heat through a condenser and be used.

[0030] The beneficial effects of the present invention are:

[0031] 1. By setting up a heating mechanism, the input medium can be heated when the waste heat gas is circulating, so that the heated medium can be put into use. In the process of adjustment, industrial ethanol is input into the interior of the heating tube. When the industrial ethanol circulates inside the heating tube, it is transported by the spiral conveying sheet to increase its circulation time. Since the heating tube is made of copper, the waste heat gas can heat the industrial ethanol in the heating tube. The circulating industrial ethanol flows into the Tesla valve tube, and then the circulation of industrial ethanol can be realized, so that it is fully heated by the waste heat gas. After heating to the specified temperature, the solenoid valve is opened to discharge the industrial ethanol from the heating tube and be used as a solvent, cleaning agent or reaction medium.

[0032] 2. By setting up a rotating mechanism, the wind power of the waste heat gas can be used for wind power generation before it is collected. During the adjustment process, the waste heat gas brings a certain wind force when entering the interior of the movable tube, so that the wind blades can be blown to rotate under the support of the mounting ring, and the linkage rod connects multiple rotating bevel gears with the mounting ring, so that the rotation of the wind blades can drive multiple rotating bevel gears to rotate, and the gear ratio of the power generation bevel gear and the rotating bevel gear can make the rotating bevel gear drive the power generation bevel gear to rotate rapidly, and the connecting shaft of the power generation bevel gear is connected to the rotor of the small generator. When the power generation bevel gear rotates rapidly, it can drive the small generator to generate electricity, and the electricity generated by the small generator will be transmitted to the small transformer for centralized boosting and then used. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a waste heat recovery device and method for heat treatment of a fixed fastener proposed by the present invention;

[0034] Figure 2 A three-dimensional diagram of the circulating fan structure of a waste heat recovery device and method for heat treatment of fixed fasteners proposed by the present invention;

[0035] Figure 3A three-dimensional diagram of the movable pipe structure of a waste heat recovery device and method for heat treatment of fixed fasteners proposed by the present invention;

[0036] Figure 4 A stereoscopic diagram of a Tesla valve pipe structure of a waste heat recovery device and method for heat treatment of a fixed fastener proposed by the present invention;

[0037] Figure 5 A three-dimensional diagram of the structure of a spiral conveyor sheet of a waste heat recovery device and method for heat treatment of fixed fasteners proposed by the present invention;

[0038] Figure 6 A three-dimensional diagram of the rotating mechanism structure of a waste heat recovery device and method for heat treatment of a fixed fastener proposed by the present invention;

[0039] Figure 7 A three-dimensional diagram of the heating pipe structure of a waste heat recovery device and method for heat treatment of a fixed fastener proposed by the present invention;

[0040] Figure 8 A three-dimensional diagram of the air blade structure of a waste heat recovery device and method for heat treatment of a fixed fastener proposed by the present invention;

[0041] Fig. 9 This is a three-dimensional diagram of the rotating bevel gear structure of a waste heat recovery device and method for heat treatment of fixed fasteners proposed by the present invention.

[0042] In the figure: 1. heat treatment furnace; 11. support frame; 12. circulation fan; 13. drive motor; 14. smoke exhaust duct; 2. collection bin; 3. heating mechanism; 31. connecting pipe; 32. movable pipe; 33. heating pipe; 34. spiral conveying sheet; 35. Tesla valve pipe; 4. rotating mechanism; 41. mounting ring; 42. wind sheet; 43. rotating bevel gear; 44. linkage rod; 45. power generation bevel gear; 46. small generator; 47. small transformer; 48. air compressor. DETAILED DESCRIPTION

[0043] 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.

[0044] Reference Figure 1-Figure 9A waste heat recovery device for heat treatment of fixed fasteners includes a heat treatment furnace 1 for heat treatment of fixed fasteners, a support frame 11 is fixedly connected to the upper surface of the heat treatment furnace 1, a circulation fan 12 is arranged inside the heat treatment furnace 1, a drive motor 13 is fixedly installed on the upper surface of the support frame 11, the outer surface of the output shaft of the drive motor 13 extends to the interior of the heat treatment furnace 1 and is fixedly connected to one side surface of the circulation fan 12 through a coupling, a collection bin 2 is arranged on one side of the heat treatment furnace 1, a heating mechanism 3 is arranged inside the collection bin 2, and a rotating mechanism 4 is arranged on the outer surface of the heating mechanism 3.

[0045] Heat treatment of fixed fasteners is a process with high energy consumption, in which a large amount of heat is wasted in the heat treatment furnace 1. In order to absorb and utilize the wasted heat, the lower surface of the heat treatment furnace 1 is fixedly connected to a smoke exhaust duct 14 with a solenoid valve, and the circulation fan 12 is controlled to operate to circulate the waste heat inside the heat treatment furnace 1. Then the solenoid valve of the smoke exhaust duct 14 is opened, so that the waste heat can be controlled to flow to the collection bin 2 for collection.

[0046] The heating mechanism 3 utilizes the waste heat collected by the collecting bin 2 to heat the circulating industrial ethanol.

[0047] In order to increase the circulation time of the waste heat gas so as to fully utilize the waste heat, the heating mechanism 3 includes a connecting pipe 31 fixedly connected to the upper surface of the collecting bin 2, and a movable pipe 32 is fixedly connected to the upper surface of the connecting pipe 31. The free end of the smoke exhaust duct 14 is fixedly connected to the interior of the movable pipe 32. By arranging the movable pipe 32 and the connecting pipe 31, the circulation distance of the waste heat gas is increased, so that the waste heat gas reacts during circulation and is fully utilized.

[0048] In order to utilize the waste heat gas when it circulates, the heating mechanism 3 also includes a heating pipe 33 that penetrates the collecting bin 2 and is fixedly connected thereto. The heating pipe 33 is L-shaped, and the drainage end extends to the outside of the collecting bin 2 and is provided with another solenoid valve. The heating pipe 33 is made of copper. Industrial ethanol is input into the heating pipe 33. The boiling point of ethanol is lower than that of water, so it is relatively easy to heat up at room temperature. Copper is a very good thermal conductive material, so the waste heat gas can heat up the industrial ethanol in the heating pipe 33. When the industrial ethanol is heated to a sufficient temperature, it is discharged and can be used as a solvent, a cleaning agent or a reaction medium.

[0049] In order to increase the reaction time between the waste heat gas and the industrial ethanol in the heating tube 33, the heating mechanism 3 also includes a spiral conveying sheet 34 fixedly connected to the inside of the heating tube 33. When the industrial ethanol circulates in the heating tube 33, it is conveyed by the spiral conveying sheet 34 to increase its circulation time. In order to ensure that the industrial ethanol can be heated to a sufficient temperature, a Tesla valve tube 35 is provided on the outside of the heating tube 33, both ends of which are fixedly connected to the inside of the heating tube 33. A temperature detection sensor is provided to detect the temperature of the industrial ethanol in the heating tube 33, and then consider whether to open the solenoid valve to discharge the liquid. If the temperature requirement is not met, the solenoid valve is closed, and the circulating industrial ethanol flows into the Tesla valve tube 35. The material of the Tesla valve tube 35 is copper, which can increase the heating time of the industrial ethanol. The Tesla valve tube 35 uses the movement of the fluid in a channel of a specific geometric shape to limit the flow effect, thereby realizing the circulation of the industrial ethanol, so that it can be fully heated by the waste heat gas.

[0050] By setting up the heating mechanism 3, the input medium can be heated when the waste heat gas circulates, so that the heated medium can be put into use. In the process of adjustment, industrial ethanol is input into the interior of the heating tube 33. When the industrial ethanol circulates inside the heating tube 33, it is transported by the spiral conveying sheet 34 to increase its circulation time. Since the material of the heating tube 33 is copper, the waste heat gas can heat the industrial ethanol in the heating tube 33. The circulating industrial ethanol flows into the Tesla valve tube 35, and then the circulation of industrial ethanol can be realized, so that it is fully heated by the waste heat gas. After heating to the specified temperature, the solenoid valve is opened to discharge the industrial ethanol from the heating tube 33 and be used as a solvent, a cleaning agent or a reaction medium.

[0051] The rotating mechanism 4 utilizes the waste heat gas entering the collecting bin 2 to drive the rotating mechanism 4, so as to convert the mechanical energy into electrical energy.

[0052] When the waste heat gas enters the movable tube 32, it brings with it a certain wind force. In order to utilize the wind force, the rotating mechanism 4 includes a mounting ring 41 which is rotatably sleeved on the outer surface of the heating tube 33 through a bearing. The outer surface of the mounting ring 41 is fixedly connected with wind vanes 42 distributed in a circular array through mounting support rods. The wind vanes 42 are arranged in an arc shape and are distributed inside the movable tube 32. Rotatable wind vanes 42 are arranged on the outer surface of the heating tube 33, so that when the waste heat gas enters the movable tube 32, the wind vanes 42 can be blown to rotate to achieve wind power generation.

[0053] In order to achieve wind power generation when the wind blades 42 rotate, the rotating mechanism 4 also includes a rotating bevel gear 43 that is linearly distributed and rotatably connected to the outer surface of the heating tube 33 through a bearing. The opposite side surfaces of adjacent rotating bevel gears 43 and the opposite side surfaces of the uppermost rotating bevel gear 43 and the mounting ring 41 are fixedly connected with a linkage rod 44. The outer surface of each rotating bevel gear 43 is symmetrically distributed and meshed with a power generation bevel gear 45. The multiple rotating bevel gears 43 are connected to the mounting ring 41 through the linkage rod 44, thereby achieving uniform rotation of the multiple rotating bevel gears 43. The gear ratio of the power generation bevel gear 45 to the rotating bevel gear 43 enables the rotating bevel gear 43 to drive the power generation bevel gear 45 to rotate quickly, thereby achieving wind power generation.

[0054] In order to generate electricity when the power generation bevel gear 45 rotates, a plurality of small generators 46 are fixedly installed on the outer surface of the connecting pipe 31. The outer surface of the rotor of the small generator 46 is fixedly connected to the connecting shaft of the corresponding power generation bevel gear 45 through a coupling. The connecting shaft of the power generation bevel gear 45 is connected to the rotor of the small generator 46. When the power generation bevel gear 45 rotates rapidly, it can drive the small generator 46 to generate electricity. In order to store electricity and boost it for use, a small transformer 47 is installed on the outer surface of the collection bin 2. The small transformer 47 is electrically connected to the plurality of small transformers 47. The electricity generated by the small generator 46 will be transmitted to the small transformer 47 for centralized boosting before being used.

[0055] In order to utilize the waste heat gas absorbed by the collecting bin 2, the heating tube 33 and the inner wall of the collecting bin 2 are made of silicate thermal insulation material. An air compressor 48 is fixedly installed on one side of the collecting bin 2. The air compressor 48 is connected to the interior of the collecting bin 2 through an air pipe. A working medium, such as a refrigerant, is arranged inside the collecting bin 2. The absorbed low-temperature heat causes the working medium to evaporate into low-pressure steam, which is then compressed into high-temperature and high-pressure gas by the air compressor 48. The high-temperature and high-pressure gas can then be used by releasing heat through the condenser. The heating tube 33 and the inner wall of the collecting bin 2 are made of silicate thermal insulation material, which can prevent heat loss.

[0056] By setting up the rotating mechanism 4, the wind power of the waste heat gas can be used for wind power generation before it is collected. During the adjustment process, the waste heat gas carries a certain wind power when entering the interior of the movable tube 32, so that the wind blades 42 can be blown to rotate under the support of the mounting ring 41, and the linkage rod 44 connects the multiple rotating bevel gears 43 with the mounting ring 41, so that the rotation of the wind blades 42 can drive the multiple rotating bevel gears 43 to rotate, and the gear ratio of the power generation bevel gear 45 and the rotating bevel gear 43 can make the rotating bevel gear 43 drive the power generation bevel gear 45 to rotate quickly, and the connecting shaft of the power generation bevel gear 45 is connected to the rotor of the small generator 46. When the power generation bevel gear 45 rotates quickly, it can drive the small generator 46 to generate electricity, and the electricity generated by the small generator 46 will be transmitted to the small transformer 47 for centralized boosting and then used.

[0057] Reference Figure 1-Figure 9 , a method for recovering waste heat from a heat treatment device for a fastener, comprising the following steps:

[0058] S1. After the heat treatment of the fixed fastener is completed, the circulating fan 12 is controlled by the driving motor 13 to circulate the residual heat inside the heat treatment furnace 1, and then the solenoid valve of the smoke exhaust pipe 14 is opened, so that the residual heat can be controlled to flow to the movable pipe 32, and then reach the collection bin 2 through the connecting pipe 31 for collection and treatment;

[0059] S2. When the waste heat gas is circulating, industrial ethanol is input into the interior of the heating tube 33. When the industrial ethanol is circulating in the heating tube 33, it is conveyed by the spiral conveying sheet 34 to increase its circulation time. Since the heating tube 33 is made of copper, the waste heat gas can heat the industrial ethanol in the heating tube 33. After the temperature of the industrial ethanol in the heating tube 33 is detected by the existing temperature detection sensor, it is considered whether to open the solenoid valve to discharge the liquid. If the temperature requirement is not met, the solenoid valve is closed, and the circulating industrial ethanol flows into the Tesla valve tube 35, thereby realizing the circulation of the industrial ethanol, so that it is fully heated by the waste heat gas. After being heated to the specified temperature, the solenoid valve is opened to discharge the industrial ethanol from the heating tube 33 and used as a solvent, a cleaning agent or a reaction medium.

[0060] S3. When the waste heat gas enters the movable tube 32, it carries a certain wind force, so that the wind blade 42 can be blown to rotate under the support of the mounting ring 41, and the linkage rod 44 connects the multiple rotating bevel gears 43 with the mounting ring 41, so that the rotation of the wind blade 42 can drive the multiple rotating bevel gears 43 to rotate;

[0061] S4, the gear ratio of the power generation bevel gear 45 and the rotating bevel gear 43 can make the rotating bevel gear 43 drive the power generation bevel gear 45 to rotate quickly, and the connecting shaft of the power generation bevel gear 45 is connected to the rotor of the small generator 46. When the power generation bevel gear 45 rotates quickly, it can drive the small generator 46 to generate electricity. The electricity generated by the small generator 46 will be transmitted to the small transformer 47 for centralized boosting and then used;

[0062] S5. A refrigerant working medium is arranged inside the collecting bin 2. The low-temperature waste heat gas absorbed causes the working medium to evaporate into low-pressure steam, which is then compressed into high-temperature and high-pressure gas by the air compressor 48. The high-temperature and high-pressure gas can then release heat through the condenser and be used.

[0063] The above description is only a preferred specific implementation manner 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waste heat recovery device for heat treatment of fixed fasteners, comprising a heat treatment furnace (1) for heat treatment of fixed fasteners, characterized in that: The upper surface of the heat treatment furnace (1) is fixedly connected to a support frame (11), a circulating fan (12) is arranged inside the heat treatment furnace (1), a driving motor (13) is fixedly installed on the upper surface of the support frame (11), the outer surface of the output shaft of the driving motor (13) extends into the interior of the heat treatment furnace (1) and is fixedly connected to a side surface of the circulating fan (12) through a coupling, a collecting bin (2) is arranged on one side of the heat treatment furnace (1), a heating mechanism (3) is arranged inside the collecting bin (2), and a rotating mechanism (4) is arranged on the outer surface of the heating mechanism (3); Wherein, the heating mechanism (3) utilizes the waste heat collected by the collecting bin (2) to heat the circulating industrial ethanol; The rotating mechanism (4) utilizes the waste heat gas entering the collecting bin (2) to drive the rotating mechanism, thereby converting mechanical energy into electrical energy.

2. A waste heat recovery device for heat treatment of fixed fasteners according to claim 1, characterized in that: The lower surface of the heat treatment furnace (1) is fixedly connected to a smoke exhaust pipe (14) with a solenoid valve.

3. A waste heat recovery device for heat treatment of fixed fasteners according to claim 2, characterized in that: The heating mechanism (3) comprises a connecting pipe (31) fixedly connected to the upper surface of the collecting bin (2), the upper surface of the connecting pipe (31) is fixedly connected to a movable pipe (32), and the free end of the smoke exhaust pipe (14) is fixedly connected to the interior of the movable pipe (32).

4. A waste heat recovery device for heat treatment of fixed fasteners according to claim 3, characterized in that: The heating mechanism (3) further comprises a heating tube (33) penetrating the collection bin (2) and fixedly connected thereto; the heating tube (33) is L-shaped, and a drainage end extends to the outside of the collection bin (2) and is provided with another solenoid valve; the heating tube (33) is made of copper.

5. A waste heat recovery device for heat treatment of fixed fasteners according to claim 4, characterized in that: The heating mechanism (3) further comprises a spiral conveying sheet (34) fixedly connected to the interior of the heating tube (33); the exterior of the heating tube (33) is provided with a Tesla valve tube (35) with both ends fixedly connected to the interior of the heating tube (33).

6. A waste heat recovery device for heat treatment of fixed fasteners according to claim 5, characterized in that: The rotating mechanism (4) comprises a mounting ring (41) which is rotatably sleeved on the outer surface of the heating tube (33) via a bearing, and the outer surface of the mounting ring (41) is fixedly connected with wind blades (42) distributed in a ring array via mounting support rods, and the wind blades (42) are arranged in an arc shape and distributed inside the movable tube (32).

7. A waste heat recovery device for heat treatment of fixed fasteners according to claim 6, characterized in that: The rotating mechanism (4) also includes a rotating bevel gear (43) which is linearly distributed and rotatably connected to the outer surface of the heating tube (33) through a bearing, and the opposite side surfaces of adjacent rotating bevel gears (43) and the opposite side surfaces of the uppermost rotating bevel gear (43) and the mounting ring (41) are fixedly connected with a linkage rod (44), and the outer surface of each rotating bevel gear (43) is symmetrically distributed and meshed with a power generation bevel gear (45).

8. The waste heat recovery device for heat treatment of fixed fasteners according to claim 7, characterized in that: A plurality of small generators (46) are fixedly mounted on the outer surface of the connecting pipe (31), and the outer surface of the rotor of the small generator (46) is fixedly connected to the connecting shaft corresponding to the generating bevel gear (45) via a coupling. A small transformer (47) is mounted on the outer surface of the collecting bin (2), and the small transformer (47) is electrically connected to the plurality of small transformers (47).

9. A waste heat recovery device for heat treatment of fixed fasteners according to claim 8, characterized in that: The heating tube (33) and the inner wall of the collecting bin (2) are both made of silicate thermal insulation material. An air compressor (48) is fixedly mounted on one side of the collecting bin (2), and the air compressor (48) is connected to the interior of the collecting bin (2) via an air pipe.

10. A method for recovering waste heat from a heat treatment device for fasteners according to any one of claims 1 to 9, comprising the following steps: S1. After the heat treatment of the fixed fastener is completed, the driving motor (13) is activated to control the circulation fan (12) to circulate the residual heat inside the heat treatment furnace (1), and then the solenoid valve of the smoke exhaust pipe (14) is opened, so that the residual heat can be controlled to flow to the movable pipe (32), and then reach the collection bin (2) through the connecting pipe (31) for collection and treatment; S2. When the waste heat gas is circulating, industrial ethanol is input into the interior of the heating tube (33). When the industrial ethanol is circulating in the heating tube (33), it is transported by the spiral conveying sheet (34) to increase its circulation time. Since the heating tube (33) is made of copper, the waste heat gas can heat the industrial ethanol in the heating tube (33). After the temperature of the industrial ethanol in the heating tube (33) is detected by the existing temperature detection sensor, it is considered whether to open the solenoid valve to discharge the liquid. If the temperature requirement is not met, the solenoid valve is closed, and the circulating industrial ethanol flows into the Tesla valve tube (35), thereby realizing the circulation of the industrial ethanol, so that it is fully heated by the waste heat gas. After heating to a specified temperature, the solenoid valve is opened to discharge the industrial ethanol from the heating tube (33) and used as a solvent, a cleaning agent or a reaction medium. S3, when the waste heat gas enters the movable tube (32), it carries a certain wind force, so that the wind blade (42) can be blown to rotate under the support of the mounting ring (41), and the linkage rod (44) connects the plurality of rotating bevel gears (43) with the mounting ring (41), so that the rotation of the wind blade (42) can drive the plurality of rotating bevel gears (43) to rotate; S4, the gear ratio of the power generation bevel gear (45) and the rotating bevel gear (43) can make the rotating bevel gear (43) drive the power generation bevel gear (45) to rotate quickly, and the connecting shaft of the power generation bevel gear (45) is connected to the rotor of the small generator (46). When the power generation bevel gear (45) rotates quickly, it can drive the small generator (46) to generate electricity. The electricity generated by the small generator (46) will be transmitted to the small transformer (47) for centralized boosting and then used; S5. A refrigerant working medium is arranged inside the collecting bin (2). The low-temperature waste heat gas absorbed causes the working medium to evaporate into low-pressure steam, which is then compressed into high-temperature and high-pressure gas by the air compressor (48). The high-temperature and high-pressure gas can then release heat through the condenser and be used.

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