A quenching furnace waste heat recycling device

Abstract

The present invention discloses a waste heat recycling device for a quenching furnace, which relates to the technical field of waste heat utilization, and includes a quenching furnace, wherein a heat conducting pipe is fixedly installed in the inner cavity of the quenching furnace, and both ends of the heat conducting pipe extend out of the inner cavity of the quenching furnace, one end of the heat conducting pipe is connected to a water inlet pipe, and the other end is connected to a water outlet pipe. The present invention is novel in design and simple in operation. Through the arrangement of a heating component and a transmission component, during the process of injecting water into the heat conducting pipe through the water inlet pipe, a plurality of blades in the transmission component will rotate under the drive of water, and then the rotation of the plurality of blades can drive the rotating shaft and the gear to rotate, and the rotation of the gear can drive the gear ring to rotate, and then the gear ring can drive the active ring, the driven ring and a plurality of heating elements to rotate, and the rotation of the plurality of heating elements can heat the heat conducting pipe being injected with water, so that the temperature difference of the heat conducting pipe before and after the injection of water is not large, the loss of the heat conducting pipe is reduced, and the cost of waste heat recycling is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat utilization, and in particular to a waste heat recycling device for a quenching furnace. Background Art

[0002] The quenching furnace is a furnace for heating the workpiece before quenching. Quenching is to put the workpiece into the furnace and heat it to a quenching temperature above the critical point and keep it for a period of time, then quickly take the workpiece out of the furnace and put it into the quenching liquid (oil or water) for quenching. The heat source of the furnace can be electricity and fuel, and the temperature can be measured by thermocouples. Furnaces that use electricity and gas or liquid fuel can use instruments to automatically control and adjust the temperature.

[0003] The patent document (authorization announcement number CN 215328271 U) discloses a quenching furnace waste heat recycling device. The technical solution adds tap water through the water inlet at the upper end of the water storage tank, starts the water pump, and under the action of the water pump, provides power to the water in the connecting device, so that the water in the water storage tank is input into the heat conduction pipe through a connecting device, and then heated by the heat generated by the heating rod, and then re-input into the cavity of the water storage tank by another connecting device for storage and use.

[0004] However, in the above technical solution, when adding water from the water storage tank to the heat pipe, the water will flow into the heat pipe quickly from the water storage tank, and the heat of the heat pipe itself will be quickly absorbed by the water, so that the temperature of the heat pipe itself will decrease at a faster rate, and then the heat pipe will be heated under the heating action of the heating rod, that is, the water in the heat pipe will be heated. This will cause the temperature difference between the front and back of the heat pipe to change greatly during the process of adding water, which will increase the loss of the heat pipe under long-term use; at the same time, in the process of heating the heat pipe with the heating rod, since the heating rod is fixedly installed on the outside of the heat pipe, the temperature of the bottom of the heating rod will be higher than the temperature of the top. In the process of heating the heat pipe with the heating rod, the top and bottom of the heat pipe will be heated unevenly, and the water inside it will also be heated unevenly, which will reduce its heating efficiency, increase the heating time, and be inconvenient to use. Summary of the invention

[0005] The object of the present invention is to provide a device for recycling waste heat of a quenching furnace.

[0006] The technical problems solved by the present invention are:

[0007] (1) In the prior art, during the process of draining and filling water into the heat pipe, the temperature difference between the injected water and the heat pipe is large. After the water is injected into the heat pipe, the water absorbs the heat of the heat pipe, causing the temperature of the heat pipe to drop rapidly. The temperature difference of the heat pipe before and after the water is filled is large, which easily increases the loss of the heat pipe and requires frequent replacement, thereby increasing the cost of waste heat recycling.

[0008] (2) The heating rod is fixedly installed on the outside of the heat pipe. During the use of the heating plate, since the heating rod is located at the top of the quenching furnace, the temperature at the bottom of the heating rod will be greater than the temperature at the top. During the process of the heating rod heating the heat pipe, the top and bottom of the heat pipe will be heated unevenly, and the water inside the heat pipe will also be heated unevenly. It will take a long time to heat the water inside the heat pipe to the specified temperature, which is inconvenient to use.

[0009] The purpose of the present invention can be achieved through the following technical solutions:

[0010] A quenching furnace waste heat recycling device comprises a quenching furnace, wherein a heat conducting pipe is fixedly installed in the inner cavity of the quenching furnace, and both ends of the heat conducting pipe extend out of the inner cavity of the quenching furnace, one end of the heat conducting pipe is connected to a water inlet pipe, and the other end is connected to a water outlet pipe;

[0011] The inner cavity of the quenching furnace is provided with a heating assembly, the heating assembly includes an active ring and a driven ring, the active ring and the driven ring are both located in the inner cavity of the quenching furnace, and the active ring and the driven ring are respectively movably sleeved on both ends of the heat conduction pipe, the active ring and the driven ring are fixedly connected, and a plurality of heating elements are provided between the active ring and the driven ring, and the plurality of heating elements are sleeved on the outside of the heat conduction pipe;

[0012] The water inlet pipe is provided with a transmission assembly, and the transmission assembly is used to drive the active ring to rotate.

[0013] As a further solution of the present invention: the water inlet pipe and the water outlet pipe are arranged vertically, and the bottom end of the water inlet pipe is connected to one end of the heat conduction pipe, and the top end of the water outlet pipe is connected to the other end of the heat conduction pipe, and valves are provided on the water inlet pipe and the water outlet pipe.

[0014] As a further solution of the present invention: the heating assembly also includes two connecting rods, the active ring and the driven ring are arranged opposite to each other, the two connecting rods are arranged in parallel in the quenching furnace, and the two ends of the connecting rods are respectively fixedly connected to the side of the active ring and the driven ring close to each other, and a plurality of heating elements are fixedly installed on the two connecting rods.

[0015] As a further solution of the present invention: the heating elements are provided in plurality, the heating elements comprising a heating ring and a plurality of arc plates, the top outer wall and the bottom outer wall of the heating ring are both provided with fixed blocks, the fixed blocks are provided with through holes, the two fixed blocks are respectively fixedly mounted on the two connecting rods through the through holes thereon, the heating ring is sleeved on the outside of the heat conducting pipe and is coaxially arranged with the heat conducting pipe; a plurality of adapter blocks are fixedly mounted on the inner circumferential array of the heating ring, the plurality of arc plates are arranged in a one-to-one correspondence with the plurality of adapter blocks, the plurality of arc plates are arranged in a circumferential array on the inner side of the heating ring, and the arc plates are fixedly connected to the adapter blocks, and the heat conducting pipe is located between the plurality of arc plates.

[0016] As a further solution of the present invention: a side of the arc plate close to the heat pipe is configured to be serrated.

[0017] As a further solution of the present invention: a plurality of heat-conducting rods are fixedly connected between any two adjacent heating rings.

[0018] As a further solution of the present invention: the transmission assembly includes a rotating shaft, which is rotatably installed on the water inlet pipe and one end of which extends into the water inlet pipe. The rotating shaft is located at one end of the water inlet pipe and is fixed with a mounting sleeve, and a plurality of blades are arranged in a circumferential array on the outer circumference of the mounting sleeve; one end of the rotating shaft away from the water inlet pipe extends into the inner cavity of the quenching furnace, and this end is transmission-connected to the active ring.

[0019] As a further solution of the present invention: a fixed sleeve is provided with a gear at one end of the rotating shaft located in the quenching furnace, a fixed sleeve is provided with a gear ring on the active ring, and the gear ring is meshed with the gear for transmission.

[0020] As a further solution of the present invention: the blades are located in the axial position of the water inlet pipe.

[0021] As a further solution of the present invention: it also includes a water tank, which is fixedly installed on the outside of the quenching furnace, and is connected to a water supply pipe, which is connected to the top of the water inlet pipe; a water inlet is opened on the top of the water tank, and the water inlet is blocked with a sealing plug.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Through the arrangement of the heating component and the transmission component, during the process of water injection into the heat pipe through the water inlet pipe, multiple blades in the transmission component will rotate under the drive of water, and then the rotation of the multiple blades can drive the rotating shaft and the gear to rotate, and the rotation of the gear can drive the gear ring to rotate, and then the gear ring can drive the active ring, the driven ring and multiple heating elements to rotate, and the rotation of the multiple heating elements can heat the heat pipe being injected with water, so that the temperature difference of the heat pipe before and after the water injection is not large, which reduces the loss of the heat pipe and reduces the cost of waste heat recycling;

[0024] 2. By injecting water into the water inlet pipe, the rotation of multiple heating elements can be driven. The multiple heating elements can evenly transfer the heat absorbed by the inner cavity of the quenching furnace to the heat pipe, that is, the heating ring and multiple arc plates on the heating element can evenly heat the heat pipe, that is, the water inside the heat pipe can be evenly preheated to ensure that the water inside the heat pipe is evenly heated. The water can be heated to the specified temperature in a short time, which is convenient to use;

[0025] 3. By setting the side of the arc plate facing the heat pipe to be serrated, the area of ​​the serrated side facing the heat pipe is enlarged on the basis that the arc plate faces the heat pipe, so that good heat transfer can be performed on the heat pipe, further improving the heating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0028] Figure 2 is a schematic cross-sectional structural diagram of the present invention when no heating component is provided;

[0029] Figure 3 yes Figure 1 A is an enlarged structural diagram;

[0030] Figure 4 yes Figure 1 The enlarged structural diagram at B in FIG.

[0031] Figure 5 It is a front view structural schematic diagram of the heating component in the present invention;

[0032] Figure 6 The overall structure of the heating ring and two connecting rods in the present invention is shown in FIG. Figure 1 ;

[0033] Figure 7 The overall structure of the heating ring and two connecting rods in the present invention is shown in FIG. Figure 2 ;

[0034] Figure 8 It is a schematic diagram of the overall structure of the position relationship between the heating ring and the heat pipe in the present invention;

[0035] Fig. 9 This is a schematic diagram of the front view of the position relationship between the heating ring and the heat pipe in the present invention Figure 1 ;

[0036] Fig.10 This is a schematic diagram of the front view of the position relationship between the heating ring and the heat pipe in the present invention Figure 2 ;

[0037] Fig.11 It is a schematic diagram of the top view of the blade and the water inlet pipe in the present invention;

[0038] Fig.12 It is a schematic diagram of the overall structure of the blades and the rotating shaft in the present invention.

[0039] In the figure: 1. quenching furnace; 2. heat conduction pipe; 3. water inlet pipe; 4. heating assembly; 5. active ring; 6. driven ring; 7. heating element; 71. heating ring; 72. arc plate; 73. fixing block; 74. adapter block; 8. transmission assembly; 9. valve; 10. connecting rod; 11. heat conduction rod; 12. rotating shaft; 13. mounting sleeve; 14. blade; 15. gear; 16. gear ring; 17. water storage tank; 18. water supply pipe; 19. sealing plug; 20. water outlet pipe. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1-Figure 12 As shown, a quenching furnace waste heat recycling device includes a quenching furnace 1 with an inner cavity, a heat pipe 2 is fixedly installed at an appropriate position in the inner cavity of the quenching furnace 1, and the heat pipe 2 is made of a material with high temperature resistance and good thermal conductivity in the prior art. When installed, both ends of the heat pipe 2 extend out of the inner cavity of the quenching furnace 1. At this time, a high temperature resistant sealing material is set at the position where the heat pipe 2 passes through the quenching furnace 1 to seal, so as to prevent the heat in the inner cavity of the quenching furnace 1 from leaking out. A water inlet pipe 3 and a water outlet pipe 20 are connected at both ends of the heat pipe 2. At the same time, a heating component 4 is set in the inner cavity of the quenching furnace 1, and the heating component 4 is used to heat the heat pipe 2. A transmission component 8 is set on the water inlet pipe 3. When water is injected into the heat pipe 2 by the water inlet pipe 3, the transmission component 8 can be used to drive the heating component 4 to rotate in the inner cavity of the quenching furnace 1, and then drive the heating component 4 to circumferentially heat the heat pipe 2, so that the heat pipe 2 is heated evenly and the heating effect is good. When the water inlet pipe 3 is in the process of injecting water into the heat conduction pipe 2, the flow of water in the water inlet pipe 3 can drive the transmission component 8 to work, and then the transmission component 8 can drive the heating component 4 to rotate. The heating component 4 can perform circumferential uniform preheating treatment on the heat conduction pipe 2 that has inlet water, thereby reducing the temperature difference of the heat conduction pipe 2 before and after the water injection and reducing the use loss of the heat conduction pipe 2; at the same time, the heating component 4 can quickly heat the water in the heat conduction pipe 2, thereby improving the utilization efficiency of the waste heat of the quenching furnace 1.

[0042] like Figure 5-Figure 8As shown, the heating assembly 4 mentioned above includes an active ring 5, a driven ring 6 and two connecting rods 10. The active ring 5 and the driven ring 6 are both located in the inner cavity of the quenching furnace 1, and the active ring 5 and the driven ring 6 are movably mounted on both ends of the heat pipe 2, and the active ring 5 and the driven ring 6 are fixedly connected. Specifically, the active ring 5 and the driven ring 6 are arranged opposite to each other, and the two connecting rods 10 are arranged in parallel in the quenching furnace 1, and the two ends of the connecting rod 10 are fixedly connected to the side of the active ring 5 and the driven ring 6 that are close to each other. A plurality of heating elements 7 are arranged between the active ring 5 and the driven ring 6, and the plurality of heating elements 7 are used to heat the heat pipe 2. As shown in FIG. Figure 1 As shown, when the heating assembly 4 is arranged in the inner cavity of the quenching furnace 1, a plurality of heating elements 7 will be sleeved on the outside of the heat pipe 2. Specifically, the plurality of heating elements 7 are fixedly mounted on two connecting rods 10. After absorbing the heat in the inner cavity of the quenching furnace 1, the plurality of heating elements 7 will perform circumferentially uniform heating treatment on the heat pipe 2. Under the combined effect of the heat pipe 2 itself being heated by the inner cavity of the quenching furnace 1 and the heating of the heating elements 7, the heat conduction effect of the heat pipe 2 is improved, and the time required for the water in the heat pipe 2 to be heated to a specified temperature is shortened.

[0043] like Figure 9-10 As shown, further, the heating element 7 is provided in plurality, and the heating element 7 includes a heating ring 71 and a plurality of arc-shaped plates 72. The top outer wall and the bottom outer wall of the heating ring 71 are both provided with fixing blocks 73. The fixing blocks 73 are provided with through holes. The two fixing blocks 73 are respectively fixedly mounted on the two connecting rods 10 through the through holes thereon. The heating ring 71 is sleeved on the outside of the heat-conducting pipe 2 and is coaxially arranged with the heat-conducting pipe 2. A plurality of adapter blocks 74 are fixedly mounted in a circumferential array on the inner side of the heating ring 71. Multiple arc plates 72 are arranged in a one-to-one correspondence with multiple adapter blocks 74. Multiple arc plates 72 are arranged in a circumferential array on the inner side of the heating ring 71, and the arc plates 72 are fixedly connected to the adapter block 74. When the heating component 4 is set in the inner cavity of the quenching furnace 1, the heat pipe 2 will be located between the multiple arc plates 72. The heating ring 71 and the arc plates 72 are both made of materials with good thermal conductivity. After the arc plates 72 absorb the heat in the inner cavity of the quenching furnace, they can be evenly transferred to the heat pipe 2 in a circumferential direction.

[0044] Of course, in order to enable the arc plate 72 to better uniformly heat the heat pipe 2, the arc plate 72 can be set to be serrated on the side close to the heat pipe 2, so that the serrated side has a larger area facing the heat pipe 2, which can transfer heat to the heat pipe 2 well; or multiple heat-conducting rods 11 can be fixedly connected between any two adjacent heating rings 71. The multiple heat-conducting rods 11 can make the multiple heating rings 71 have the same heat, and thus the heat can be evenly transferred to the heat pipe 2.

[0045] like Figure 1-Figure 5 and Fig.12As shown, the transmission assembly 8 includes a rotating shaft 12, which is rotatably mounted on the water inlet pipe 3, and one end of the rotating shaft 12 extends into the water inlet pipe 3, and a mounting sleeve 13 is fixedly sleeved on the end, and a plurality of blades 14 are circumferentially arrayed on the outer circumference of the mounting sleeve 13. When the water in the water inlet pipe 3 flows into the heat conduction pipe 2, the water flow can drive the plurality of blades 14 to rotate, thereby driving the rotating shaft 12 to rotate; the other end of the rotating shaft 12 extends into the inner cavity of the quenching furnace 1, and the end is transmission-connected with the active ring 5 in the heating assembly 4. Specifically, a gear 15 is fixedly sleeved at one end of the rotating shaft 12 located in the quenching furnace 1, and a gear ring 16 is fixedly sleeved on the active ring 5, and the gear ring 16 meshes with the gear 15 for transmission. When water flows from the water inlet pipe 3 to the heat conduction pipe 2, the water flow acts on the multiple blades 14, which will drive the rotating shaft 12 to rotate, and then the gear 15 will also rotate. The rotation of the gear 15 will drive the gear ring 16 meshing with it to rotate. Since the active ring 5 and the driven ring 6 are movably mounted on the heat conduction pipe 2, the rotation of the gear ring 16 can drive the active ring 5 and the driven ring 6 to rotate, that is, it will drive the multiple heating rings 71 to rotate. When water is injected into the heat pipe 2 through the water inlet pipe 3, the water entering the heat pipe 2 will quickly absorb the heat of the heat pipe 2. At this time, the temperature of the heat pipe 2 will decrease at a faster rate. However, in the process of water flowing from the water inlet pipe 3 to the heat pipe 2, the water will drive the active ring 5 and the driven ring 6 to rotate, and then the multiple heating rings 71 will be driven to rotate. The multiple heating rings 71 have absorbed the higher heat in the inner cavity of the quenching furnace 1 in the non-rotating state. In the process of the rotation of the multiple heating rings 71, the multiple arc plates 72 on the inner side of the heating ring 71 will perform circumferential preheating treatment on the outside of the heat pipe 2. , so that the temperature difference of the outside of the heat pipe 2 before and after the water injection will not be too large, which can reduce the loss of the heat pipe 2. At the same time, since the heating ring 71 and the multiple curved plates 72 inside it will rotate outside the heat pipe 2 during the water injection process, the positions of the heating ring 71 and the multiple curved plates 72 always change evenly, so that the heating ring 71 and the multiple curved plates 72 can be evenly heated by the residual heat of the inner cavity of the quenching furnace 1, that is, the water in the heat pipe 2 can be further evenly heated, shortening the time required for heating the water to the specified temperature, and improving the utilization efficiency of the residual heat of the quenching furnace 1.

[0046] like Fig.11 As shown, in order to prevent the water in the water inlet pipe 3 from generating a large impact force on the mounting sleeve 13 during the process of flowing to the heat conduction pipe 2, resulting in poor rotation effect of the rotating shaft 12, the blade 14 is arranged at the axial position of the water inlet pipe 3, that is, from Fig.11 In the state shown, the blades 14 and the cross-sectional circle of the water inlet pipe 3 are eccentrically arranged, and thus during the flow of water in the water inlet pipe 3, the water will impact the blades 14, driving the multiple blades 14 to rotate, that is, the multiple blades 14 can drive the rotating shaft 12 to rotate more smoothly.

[0047] like Figure 1-Figure 2 As shown, the water inlet pipe 3 and the water outlet pipe 20 are arranged vertically, and the bottom end of the water inlet pipe 3 is connected to one end of the heat conducting pipe 2, and the top end of the water outlet pipe 20 is connected to the other end of the heat conducting pipe 2. Valves 9 are provided on the water inlet pipe 3 and the water outlet pipe 20. In order to facilitate the water injection into the heat conducting pipe 2, a water storage tank 17 is provided outside the quenching furnace 1, and a water supply pipe 18 is connected to the water storage tank 17. The water supply pipe 18 is connected to the top end of the water inlet pipe 3. A water pump (not shown in the figure) can be provided on the water storage tank 17, and the water pump is used to transport the water in the water storage tank 17 to the water inlet pipe 3. At the same time, in order to facilitate the addition of water to the water tank 17 and the cleaning of scale generated on the inner wall of the water tank 17 due to long-term use, a water inlet is opened at the top of the water tank 17. When no water is needed, the water inlet is blocked with a sealing plug 19. When water needs to be added or scale needs to be cleaned, the sealing plug 19 can be pulled out and water or scale cleaner can be injected through the water inlet.

[0048] The working principle of the present invention is as follows: Figure 1 As shown, if in this state, the water in the heat conduction pipe 2 is released through the water outlet pipe 20, then the water storage tank 17 needs to supply water to the water inlet pipe 3. In the process of the water in the water storage tank 17 flowing to the water inlet pipe 3, the flow of water will drive the multiple blades 14 to rotate, and then the rotation of the multiple blades 14 will drive the rotating shaft 12 and the gear 15 to rotate, the rotation of the gear 15 will drive the gear ring 16 meshing therewith to rotate, and the rotation of the gear ring 16 will drive the active ring 5 and the driven ring 6 to rotate, and then in the process of injecting water from the water inlet pipe 3 to the heat conduction pipe 2, the active ring 5 and the driven ring 6 will rotate outside the heat conduction pipe 2, and the rotation of the active ring 5 and the driven ring 6 will The plurality of heating rings 71 are driven to rotate, and the heating rings 71 can perform preliminary heating treatment on the heat-conducting pipe 2. Meanwhile, the rotation of the heating ring 71 can drive the plurality of arc plates 72 thereon to rotate, and the rotation of the plurality of arc plates 72 can further heat the heat-conducting pipe 2. By heating the heat-conducting pipe 2 by the heating ring 71 and the plurality of arc plates 72, the heat-conducting pipe 2 can be preheated to prevent a large temperature difference before and after the heat-conducting pipe 2 is filled with water, thereby aggravating the loss of the heat-conducting pipe 2 itself. Meanwhile, the heating ring 71 and the plurality of arc plates 72 can also evenly heat the water in the heat-conducting pipe 2, thereby shortening the time required for heating the water in the heat-conducting pipe 2 to a specified temperature.

[0049] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A quenching furnace waste heat recycling device, comprising a quenching furnace (1), characterized in that: A heat conducting pipe (2) is fixedly installed in the inner cavity of the quenching furnace (1), and both ends of the heat conducting pipe (2) extend out of the inner cavity of the quenching furnace (1); one end of the heat conducting pipe (2) is connected to a water inlet pipe (3), and the other end is connected to a water outlet pipe (20); The inner cavity of the quenching furnace (1) is provided with a heating assembly (4), the heating assembly (4) comprising an active ring (5) and a driven ring (6), the active ring (5) and the driven ring (6) are both located in the inner cavity of the quenching furnace (1), and the active ring (5) and the driven ring (6) are respectively movably sleeved on two ends of the heat conducting pipe (2), the active ring (5) and the driven ring (6) are fixedly connected, and a plurality of heating elements (7) are provided between the active ring (5) and the driven ring (6), and the plurality of heating elements (7) are sleeved on the outside of the heat conducting pipe (2); The water inlet pipe (3) is provided with a transmission assembly (8), and the transmission assembly (8) is used to drive the active ring (5) to rotate; The water inlet pipe (3) and the water outlet pipe (20) are both arranged vertically, and the bottom end of the water inlet pipe (3) is connected to one end of the heat conducting pipe (2), and the top end of the water outlet pipe (20) is connected to the other end of the heat conducting pipe (2), and valves (9) are provided on the water inlet pipe (3) and the water outlet pipe (20); The transmission assembly (8) comprises a rotating shaft (12), the rotating shaft (12) being rotatably mounted on the water inlet pipe (3), and one end of the rotating shaft (12) extending into the water inlet pipe (3); a mounting sleeve (13) is fixedly mounted on one end of the rotating shaft (12) located on the water inlet pipe (3), and a plurality of blades (14) are arranged in a circumferential array on the outer circumference of the mounting sleeve (13); one end of the rotating shaft (12) away from the water inlet pipe (3) extends into the inner cavity of the quenching furnace (1), and the end is transmission-connected to the active ring (5); A gear (15) is fixedly sleeved on one end of the rotating shaft (12) located in the quenching furnace (1), a gear ring (16) is fixedly sleeved on the driving ring (5), and the gear ring (16) is meshed with the gear (15) for transmission; The blades (14) are located in the axial direction of the water inlet pipe (3).

2. A quenching furnace waste heat recycling device according to claim 1, characterized in that: The heating assembly (4) further comprises two connecting rods (10), the active ring (5) and the driven ring (6) are arranged opposite to each other, the two connecting rods (10) are arranged in parallel in the quenching furnace (1), and the two ends of the connecting rods (10) are respectively fixedly connected to the sides of the active ring (5) and the driven ring (6) that are close to each other, and a plurality of heating elements (7) are fixedly mounted on the two connecting rods (10).

3. A quenching furnace waste heat recycling device according to any one of claims 1-2, characterized in that: The heating element (7) is provided in plurality, and the heating element (7) comprises a heating ring (71) and a plurality of arc-shaped plates (72). The top outer wall and the bottom outer wall of the heating ring (71) are both provided with fixing blocks (73), the fixing blocks (73) are provided with through holes, and the two fixing blocks (73) are respectively fixedly mounted on the two connecting rods (10) through the through holes thereon. The heating ring (71) is sleeved on the outside of the heat-conducting pipe (2) and is arranged coaxially with the heat-conducting pipe (2). The inner side of the heating ring (71) is provided with a plurality of adapter blocks (74) fixedly mounted in a circumferential array, the plurality of arc-shaped plates (72) and the plurality of adapter blocks (74) are arranged in a one-to-one correspondence, the plurality of arc-shaped plates (72) are arranged in a circumferential array on the inner side of the heating ring (71), and the arc-shaped plates (72) are fixedly connected to the adapter blocks (74), and the heat-conducting pipe (2) is located between the plurality of arc-shaped plates (72).

4. The quenching furnace waste heat recycling device according to claim 3, characterized in that: The side of the arc-shaped plate (72) close to the heat-conducting pipe (2) is configured to be sawtooth-shaped.

5. A quenching furnace waste heat recycling device according to claim 4, characterized in that: A plurality of heat-conducting rods (11) are fixedly connected between any two adjacent heating rings (71).

6. The quenching furnace waste heat recycling device according to claim 1, characterized in that: It also includes a water tank (17), the water tank (17) being fixedly mounted outside the quenching furnace (1), and a water supply pipe (18) being connected to the water tank (17), the water supply pipe (18) being connected to the top end of the water inlet pipe (3); a water inlet is provided at the top of the water tank (17), and a sealing plug (19) is provided on the water inlet.

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