Rotary liquid quenching tank

Abstract

The invention relates to a rotary liquid quenching tank, and belongs to the technical field of metal heat treatment, the rotary liquid quenching tank comprises a quenching inner tank and a quenching outer tank, the quenching inner tank is located in the quenching outer tank, the top surface of the quenching inner tank is lower than the top surface of the quenching outer tank, a quenching base is arranged in the quenching inner tank, and the quenching base is used for placing a heated product; the quenching tank is used for containing quenching oil, oil liquid in the quenching tank is used for being conveyed to the quenching inner tank, the liquid level of the oil liquid in the quenching inner tank gradually rises to submerge the heated product, and the oil liquid in the quenching inner tank enters the quenching outer tank and returns to the quenching tank after crossing the top surface of the quenching inner tank; the quenching inner tank is provided with a first stirring piece and a second stirring piece, and the first stirring piece is used for stirring oil in the quenching inner tank, so that the oil is in a rotating state to quench the outer ring of the product; the second stirring piece is used for stirring oil in the inner ring of the product in a rotating state so as to quench the inner ring of the product. The quenching device has the effect of improving the product quenching quality.

Description

Technical Field

[0001] The present application relates to the technical field of metal heat treatment, and in particular to a hydro-quenching tank. Background Art

[0002] Heat treatment refers to a metal heat processing process in which materials are heated, kept warm and cooled in a solid state to obtain the expected structure and performance. A certain quenching intensity is required during the heat treatment quenching process. At present, in order to ensure the quenching intensity, the heat treatment industry uses methods such as product up and down movement, blowout spray system, product external surface swirl spray, product rotation, etc. If press die quenching is used, it is necessary to open a more complex and precise backflow groove and oil hole inside the mold to ensure consistent cooling of the product inside and outside, otherwise deformation will increase and soft spots will appear. The above methods can play a good effect on the concentrated quenching of stacked products and ring products with a diameter of less than 1m, but they are difficult for heavy products (such as wind turbine main shaft bearing products), and there will be uneven hardness and quality problems that cannot be effectively controlled. Summary of the invention

[0003] In order to improve the quenching quality of products, the present application provides a hydro-quenching tank.

[0004] The present application provides a hydro-quenching tank adopting the following technical solution: A rotary liquid quenching tank comprises an inner quenching tank and an outer quenching tank, wherein the inner quenching tank is located in the outer quenching tank, the top surface of the inner quenching tank is lower than the top surface of the outer quenching tank, a quenching base is arranged in the inner quenching tank, and the quenching base is used to place the heated product; the quenching tank also comprises a quenching tank for containing quenching oil, the oil in the quenching tank is used to be transported to the inner quenching tank, the oil level in the inner quenching tank gradually rises and submerges the heated product, when the oil in the inner quenching tank passes over the top surface of the inner quenching tank, it enters the outer quenching tank and returns to the quenching tank; the inner quenching tank is provided with a first stirring member and a second stirring member, the first stirring member is used to stir the oil in the inner quenching tank, so that the oil is in a rotating state and the outer ring of the product is quenched; the second stirring member is used to stir the oil in the inner ring of the product in a rotating state and the inner ring of the product is quenched.

[0005] Optionally, the first agitator includes an oil pump, an oil inlet pipe, an external spray pipe and an internal spray pipe connected to the quenching tank, the oil pump is used to inject oil into the oil inlet pipe, the oil inlet pipe is divided into two ways to enter the quenching inner tank, the external spray pipe is connected to one oil inlet pipe, and the internal spray pipe is connected to the other oil inlet pipe, the external spray pipe and the internal spray pipe are both ring-shaped, the diameter of the external spray pipe is larger than the diameter of the internal spray pipe, and nozzles are provided on the external spray pipe and the internal spray pipe, and the angle between the nozzle and the external spray pipe and the internal spray pipe is 30°-60° and they are inclined in the same direction.

[0006] Optionally, the second agitator includes a plurality of oil passage grooves formed on the quenching base, wherein the oil passage grooves are formed at an angle, and an angle of inclination of the oil passage grooves is consistent with an angle of inclination of the nozzle.

[0007] Optionally, the second agitator also includes a manifold arranged on the quenching base, the manifold is connected to any number of oil grooves, and the angle is consistent with the oil grooves. The side wall of the manifold is provided with an oil inlet. The rotating oil in the quenching inner groove enters the manifold through the oil inlet and enters the product inner ring through the oil groove to drive the oil in the product inner ring to rotate.

[0008] Optionally, the cross-section of the manifold is triangular, the corners of the manifold face the rotation direction of the oil, and the oil inlet is opened on the corners facing the oil. An arc-shaped guide platform is provided in the manifold, and the guide platform is used to convert the flow direction of the oil in the manifold so that the oil flows along the manifold. The inner diameter of the manifold gradually decreases to increase the oil injection pressure.

[0009] Optionally, the manifold is provided with a closure for closing the oil inlet. The closure is used to close the oil inlet when the liquid level in the quenching inner tank rotates and rises and passes through the oil tank into the inner ring of the product. When the rotation speed of the oil in the inner ring of the product decreases, the closure is used to open the oil inlet so that the oil pushes the oil in the inner ring of the product to rotate rapidly.

[0010] Optionally, a plurality of expansion blocks for fixing the product are arranged on the quenching base, and flow grooves are left between adjacent expansion blocks. The flow grooves are inclined to form an angle so that the oil in the flow grooves rotates and flows.

[0011] Optionally, two layers of mesh are provided in the quenching inner tank, the two layers of mesh are in annular shape and fit together, a plurality of filter holes are opened on the mesh, the filter holes on the two layers of mesh are interconnected, a gap is left between the mesh close to the quenching inner tank and the quenching inner tank, when the oil rotates, impurities in the oil pass through the filter holes to between the mesh and the inner wall of the quenching tank, the mesh close to the quenching inner tank is rotatably arranged in the quenching inner tank, the rotation axis of the mesh is coaxial with the quenching inner tank, and also includes a driving member for driving the mesh to rotate and be offset with the outer mesh to close the filter holes.

[0012] Optionally, the driving member includes a driving motor arranged at the top of the quenching outer tank, the length direction of the driving motor output shaft is perpendicular to the axial direction of the quenching outer tank, a driving gear is arranged on the driving motor output shaft, and an annular rack is arranged at the end of the mesh near the inner wall of the quenching inner tank, and the driving gear and the annular rack are meshed with each other.

[0013] Optionally, the filter hole is open and connected to the mesh, and the open surface of the filter hole is arc-shaped.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. When quenching the inner ring or outer ring of the bearing, place the heated inner ring or outer ring of the bearing on the quenching base, then the quenching oil in the quenching tank is transported to the quenching inner tank, the liquid level in the quenching inner tank rises rapidly, and then the quenching oil is acted on by the first stirring member, and the quenching oil rotates rapidly in the quenching inner tank to quench the outer ring of the inner ring and outer ring of the bearing. When the quenching oil level rises to the quenching base, the second stirring member drives the oil in the inner ring of the bearing to rotate, and the oil rotates to quench the inner ring of the bearing. The quenching liquid in the quenching inner tank is in a rotating state at a certain rotation speed to ensure that the quenching liquid on the inner and outer diameters of the product are in a rotating state, so that the inner and outer diameter surfaces of the product are in the rotating quenching liquid at the same time, so that the product is cooled evenly, thereby obtaining a product with good deformation and good hardness structure.

[0015] 2. The oil in the inner quenching tank rotates freely and rises to cool the product. When the rotating quenching liquid level is higher than the height of the inner quenching tank, the quenching liquid flows into the outer quenching tank. The quenching liquid in the outer quenching tank uses the gravity difference to enter the oil return pipeline along each oil return port and flow back to the quenching tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a hydrocyclone quenching tank according to an embodiment of the present application; Figure 2 It is a structural schematic diagram of an inner quenching tank and an outer quenching tank in a hydro-rotation quenching tank according to an embodiment of the present application; Figure 3 It is a structural schematic diagram of a quenching base riser, an oil trough and a flow trough in a hydrocyclone quenching tank according to an embodiment of the present application; Figure 4 It is a structural schematic diagram of a quenching base and a manifold in a hydrocyclone quenching tank according to an embodiment of the present application; Figure 5 It is a cross-sectional view of an inner quenching tank and an outer quenching tank in a hydro-cyclone quenching tank according to an embodiment of the present application; Figure 6 yes Figure 5 Enlarged schematic diagram of part A.

[0017] Description of reference numerals: 1. quenching inner tank; 2. quenching outer tank; 3. quenching base; 4. quenching tank; 5. first stirring member; 51. oil pump; 52. oil inlet pipe; 53. external spray pipe; 54. internal spray pipe; 55. spray head; 6. second stirring member; 61. oil trough; 62. manifold; 7. Oil return pipe; 8. Oil inlet; 9. Closing plate; 10. Expansion block; 11. Flow trough; 12. Mesh; 13. Filter hole; 14. Drive motor; 15. Drive gear; 16. Ring rack. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-6 This application is described in further detail.

[0019] The present application discloses a hydrocyclone quenching tank. Figure 1 and Figure 2 The hydro-quenching tank comprises an inner quenching tank 1 and an outer quenching tank 2. The inner quenching tank 1 is located in the outer quenching tank 2. The outer quenching tank 2 is fixedly arranged on the outer wall of the inner quenching tank 1. The top surface of the inner quenching tank 1 is lower than the top surface of the outer quenching tank 2. A quenching base 3 is arranged in the inner quenching tank 1. The quenching base 3 is separated from the bottom wall of the inner quenching tank 1. The quenching base 3 is used to place the heated product. The quenching tank 4 is also included for containing quenching oil. The oil in the quenching tank 4 is used to be transported to the inner quenching tank 1. The oil level in the quenching inner tank 1 gradually rises and submerges the heated product. When the oil in the quenching inner tank 1 passes over the top surface of the quenching inner tank 1, it enters the quenching outer tank 2 and returns to the quenching tank 4. The quenching inner tank 1 is provided with a first stirring member 5 and a second stirring member 6. The first stirring member 5 is used to stir the oil in the quenching inner tank 1 so that the oil is in a rotating state to quench the outer ring of the product; the second stirring member 6 is used to stir the oil in the inner ring of the product so that it is in a rotating state to quench the inner ring of the product.

[0020] When quenching the inner ring or outer ring of the bearing, the heated inner ring or outer ring of the bearing is placed on the quenching base 3, and then the quenching oil in the quenching tank 4 is transported to the quenching inner tank 1, and the liquid level in the quenching inner tank 1 rises rapidly, and then the first stirring member 5 acts on the quenching oil, and the quenching oil rotates rapidly in the quenching inner tank 1 to quench the outer ring of the inner ring and outer ring of the bearing. When the quenching oil level rises to the quenching base 3, the second stirring member 6 drives the oil in the inner ring of the bearing to rotate, and the rotation of the oil quenches the inner ring of the bearing. The quenching liquid in the quenching inner tank 1 is in a rotating state at a certain rotation speed, ensuring that the quenching liquid on the inner and outer diameters of the product are in a rotating state, so that the inner and outer diameter surfaces of the product are simultaneously in the rotating quenching liquid, so that the product is cooled evenly, thereby obtaining a product with good deformation and good hardness structure.

[0021] Reference Figure 1 and Figure 2 In the embodiment of the present application, a return oil pipe 7 is provided on the bottom wall of the outer quenching tank 2 , and the return oil pipe 7 is connected to the quenching tank 4 .

[0022] Reference Figure 1 and Figure 2In the embodiment of the present application, the first agitator 5 includes an oil pump 51, an oil inlet pipe 52, an external spray pipe 53 and an internal spray pipe 54 connected to the quenching tank 4. The oil pump 51 is used to inject oil into the oil inlet pipe 52. The oil inlet pipe 52 is divided into two ways to enter the quenching inner tank 1. The external spray pipe 53 is connected to one oil inlet pipe 52, and the internal spray pipe 54 is connected to the other oil inlet pipe 52. The external spray pipe 53 and the internal spray pipe 54 are both annular. The diameter of the external spray pipe 53 is larger than the diameter of the internal spray pipe 54. A nozzle 55 is provided on the external spray pipe 53 and the internal spray pipe 54. The angle between the nozzle 55 and the external spray pipe 53 and the internal spray pipe 54 is 30°-60° and is inclined in the same direction. When quenching, start the oil pump 51, the oil pump 51 draws the quenching oil in the quenching tank 4 into the oil inlet pipe 52, the oil in the oil inlet pipe 52 is divided into two paths and enters the outer spray pipe 53 and the inner spray pipe 54 respectively, the oil in the outer spray pipe 53 and the inner spray pipe 54 is sprayed out through the nozzle 55, at this time, the liquid level in the quenching inner tank 1 gradually rotates and rises, the operation is simple and convenient.

[0023] Reference Figure 2 , Figure 3 and Figure 4 In the embodiment of the present application, the second stirring member 6 includes a plurality of oil grooves 61 provided on the quenching base 3. The oil grooves 61 are provided at an angle, and the inclination angle of the oil grooves 61 is consistent with the inclination angle of the nozzle 55. The liquid level of the quenching inner tank 1 gradually rises, and the quenching oil passes through the oil grooves 61 over the quenching base 3, and passes through the inclined oil grooves 61, so that the oil in the inner ring of the bearing rotates and rises to quench the inner ring of the bearing. The operation is simple and convenient.

[0024] Reference Figure 2 , Figure 3 and Figure 4 When the quenching oil level passes over the quenching base 3, the driving effect of the oil passing through the oil groove 61 on the quenching oil decreases, which easily leads to a decrease in the rotation speed of the quenching oil in the inner ring of the bearing. Therefore, in the embodiment of the present application, the second stirring member 6 also includes a manifold 62 arranged on the quenching base 3, the manifold 62 is connected to any number of oil grooves 61, and the angle is consistent with the oil groove 61. The side wall of the manifold 62 is provided with an oil inlet 8. The rotating oil in the quenching inner tank 1 enters the manifold 62 through the oil inlet 8 and enters the product inner ring through the oil groove 61, thereby driving the oil in the product inner ring to rotate. When the oil in the quenching inner tank 1 rotates, part of the oil enters the manifold 62 through the oil inlet, and the quenching oil flows along the manifold 62 and passes through the oil groove 61 to the inner ring of the bearing, thereby driving the quenching oil to rotate, thereby improving the quenching quality of the bearing.

[0025] Reference Figure 2 , Figure 3 and Figure 4In order to reduce the obstruction of the manifold 62 to the rotating oil in the quenching inner tank 1, the cross-section of the manifold 62 is triangular, the corners of the manifold 62 face the rotation direction of the oil, and the oil inlet 8 is opened on the corners facing the oil. An arc-shaped guide platform is arranged in the manifold 62, and the guide platform is used to convert the flow direction of the oil in the manifold 62 so that the oil flows along the manifold 62, and the inner diameter of the manifold 62 gradually decreases to increase the oil injection pressure; the corners of the manifold 62 face the rotating oil, which reduces the obstruction of the manifold 62 to the rotating oil; and under the action of the guide platform, the oil entering the manifold 62 is guided, and the rebound of the oil impacting the inner wall of the manifold 62 is reduced, which facilitates the quenching oil to flow along the manifold 62; and the inner diameter of the manifold 62 gradually decreases, which facilitates the pressure of the quenching oil passing through the manifold 62 to gradually increase, and facilitates the oil arc rotation and rise.

[0026] Reference Figure 2 , Figure 3 and Figure 4 In the embodiment of the present application, the manifold 62 is provided with a closure for closing the oil inlet 8. The closure is used to close the oil inlet 8 when the liquid level in the quenching inner tank 1 rotates and rises and passes through the oil tank 61 into the inner ring of the product. When the rotation speed of the oil in the inner ring of the product decreases, it is used to open the oil inlet 8 so that the oil pushes the oil in the inner ring of the product to rotate rapidly. The closure includes a mounting shaft arranged in the oil inlet 8, a closing plate 9 arranged on the mounting shaft, and a micro motor embedded in the oil inlet 8. The micro motor is used to drive the closing plate 9 to rotate.

[0027] When the oil in the quenching inner tank 1 rotates and rises, the oil inlet 8 of the manifold 62 is in a closed state (to prevent the quenching oil from being sprayed onto the quenching base 3 through the manifold 62 when the oil in the quenching inner tank 1 initially rises, and then sprayed onto the inner ring of the bearing, thereby avoiding the possibility of uneven cooling of the inner ring of the bearing). Therefore, when the liquid level in the quenching inner tank 1 rotates and rises and passes over the quenching base 3, and gradually submerges the inner ring or outer ring of the bearing, the manifold 62 is in a closed state. When the rotation speed of the oil in the inner ring of the bearing decreases, the micromotor is started, and the micromotor drives the hinge shaft to rotate, thereby driving the closing plate 9 to rotate and open the oil inlet 8, thereby increasing the oil inlet pressure of the quenching oil, thereby driving the quenching oil to rotate.

[0028] Reference Figure 2 , Figure 3 and Figure 4 In the embodiment of the present application, a plurality of expansion blocks 10 for fixing the product are arranged on the quenching base 3. Under the action of the expansion blocks 10, the product is fixed, and the possibility of product shaking is reduced; a flow groove 11 is left between adjacent expansion blocks 10, and the flow groove 11 is inclined to form an angle so that the oil in the oil groove 61 rotates and flows. Under the action of the flow groove 11, the oil rotates and flows between the expansion blocks 10, and the quenching oil rotates.

[0029] Reference Figure 5 and Figure 6 After the quenching oil quenches the product, there are many impurities in the quenching oil. The quenching oil needs to be maintained regularly to ensure the quenching effect of the product. Therefore, in the embodiment of the present application, in order to facilitate the maintenance of the quenching oil, two layers of mesh 12 are arranged in the quenching inner tank 1. The two layers of mesh 12 are annular and fit each other. A plurality of filter holes 13 are opened on the mesh 12. The filter holes 13 on the two layers of mesh 12 are interconnected. A gap is left between the mesh 12 close to the quenching inner tank 1 and the quenching inner tank 1. When the oil rotates, impurities in the oil pass through the filter holes 13 to between the mesh 12 and the inner wall of the quenching tank 4. The mesh 12 located close to the quenching inner tank 1 is rotatably arranged in the quenching inner tank 1. The rotation axis of the mesh 12 is coaxial with the quenching inner tank 1. It also includes a driving member for driving the mesh 12 to rotate and dislocate with the outer mesh 12 to close the filter hole 13; Reference Figure 5 and Figure 6 The driving part includes a driving motor 14 fixedly arranged at the top of the quenching outer tank 2, the length direction of the output shaft of the driving motor 14 is perpendicular to the axial direction of the quenching outer tank 2, and a driving gear 15 is arranged on the output shaft of the driving motor 14. An annular rack 16 is fixedly arranged at the end of the mesh 12 close to the inner wall of the quenching inner tank 1, and the driving gear 15 and the annular rack 16 are meshed with each other.

[0030] When the quenching oil rotates and rises in the quenching inner tank 1, on the one hand, it quenches the product, and on the other hand, it drives the impurities in the quenching oil to move toward the inner wall under the action of centrifugal force. When the impurities are close to the mesh 12, the impurities pass through the mesh 12 through the filter holes 13, and the impurities are temporarily sealed between the mesh 12 and the inner wall of the quenching inner tank 1. When the product is quenched, the drive motor 14 is started, and the drive motor 14 drives the drive gear 15 to rotate. The drive gear 15 drives the annular rack 16 to move, and the annular rack 16 drives the outer mesh 12 to move so that the filter holes 13 on the two layers of mesh 12 are staggered with each other, and the impurities and quenching oil are sealed inside, and then the sealed impurities and quenching oil are extracted, thereby reducing the impurities in the quenching oil, and maintaining the quenching oil while quenching the product, thereby improving the quenching effect of the product.

[0031] Reference Figure 5 and Figure 6 In the embodiment of the present application, in order to reduce the obstruction of the inner wall of the filter hole 13 to the rotating oil, the filter hole 13 is open and connected to the mesh 12, and the open surface of the filter hole 13 is arc-shaped.

[0032] In the embodiment of the present application, the liquid level in the quenching inner tank 1 rises by 300 mm and is completed within 5 seconds.

[0033] T=π×D×D×H÷(4×Q×n×k) is used to calculate the time it takes for the liquid quenching oil level to rise, and to select the parameters and number of quenching pumps.

[0034] Where: D: inner diameter of hydrocyclone quenching tank, m; H: Liquid level rise height, m; Q: Oil pump 51 flow, m³ / h; n: number of oil pumps 51, units; k: coefficient, generally 0.8 to 0.9; T: time required for the liquid level to rise to H, h; 2) Ensure that the quenching liquid is in a rotating state after the liquid comes into contact with the product.

[0035] In order to ensure that the quenching liquid can rotate and rise, the following requirements must be met: the angle between the nozzle 55 on the external spray pipeline 53 and the external spray pipeline 53 is 30°~60°, generally 45°; the angle between the nozzle 55 on the internal spray pipeline 54 and the internal spray pipeline is 30°~60°, generally 45°; the specification of the spray pipe is selected to meet the following requirements: m×d2×d2=d1×d1×f, and the design number of nozzles 55 is selected at the same time.

[0036] Where: d2: nozzle 55 inner diameter, mm; d1: inner diameter of the external spray pipe 53 / internal spray pipe 54, mm; m: number of sprays, pieces; f: coefficient, generally 0.9 to 0.95; 3) The quenching liquid in this quenching tank 4 uses gravity difference to achieve liquid return The horizontal height of the return liquid port of the quenching outer tank 2 must be more than 1.2m higher than the liquid level of the common quenching tank 4, so that gravity difference return liquid can be achieved and the following requirements must be met at the same time: a×d3×d3=d1×d1×g, and the number of return liquid ports must be determined at the same time.

[0037] Where: a: number of liquid return ports, pieces; d3: inner diameter of reflux pipe, mm; d1: inner diameter of the external spray pipe 53 / internal spray pipe 54, mm; g: coefficient, generally 3 to 4.

[0038] Electronic starting valves are installed on the two oil inlet pipes 52. The valves are opened during quenching. After quenching, the delay time of closing the valves is controlled to control the oil unloading. At the same time, the oil level after unloading is accurately controlled in conjunction with the liquid level meter.

[0039] The implementation principle of a hydro-spinning quenching tank in the embodiment of the present application is: When the quenching button is pressed, each oil pump 51 extracts quenching liquid from the common quenching tank 4, and opens the oil inlet valve of the oil inlet pipe 52 at the same time. The quenching liquid enters the oil inlet pipe 52, the external spray pipe 53 and the internal spray pipe 54 in turn, and then enters the nozzle 55 evenly distributed along the circumferential direction and with a certain angle, and then sprays to the quenching inner tank 1. The quenching liquid in the quenching inner tank 1 rotates and rises. When the rotating quenching liquid level rises to the oil passing tank 61 of the quenching base 3, the outer side of the product is cooled by the freely rotating and rising quenching liquid (the time from the start button being pressed to the quenching liquid flooding the product is ≤5s). When the quenching oil is higher than the height of the quenching inner tank 1, the quenching liquid flows into the quenching outer tank 2. The quenching liquid in the quenching outer tank 2 uses the gravity difference to enter the return oil pipe 7 along each return oil port and return to the common quenching tank 4.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydrocyclone quenching tank, characterized in that: The invention comprises an inner quenching tank (1) and an outer quenching tank (2), wherein the inner quenching tank (1) is located inside the outer quenching tank (2), the top surface of the inner quenching tank (1) is lower than the top surface of the outer quenching tank (2), a quenching base (3) is arranged inside the inner quenching tank (1), and the quenching base (3) is used to place the heated product; and further comprises a quenching tank (4) for containing quenching oil, the oil in the quenching tank (4) is used to be transported to the inner quenching tank (1), and the oil level in the inner quenching tank (1) gradually rises to submerge the heated product. After the product is heated, the oil in the quenching inner tank (1) passes over the top surface of the quenching inner tank (1), enters the quenching outer tank (2) and returns to the quenching tank (4); the quenching inner tank (1) is provided with a first stirring member (5) and a second stirring member (6); the first stirring member (5) is used to stir the oil in the quenching inner tank (1) so that the oil is in a rotating state to perform a quenching operation on the outer ring of the product; the second stirring member (6) is used to stir the oil in the inner ring of the product so that the oil is in a rotating state to perform a quenching operation on the inner ring of the product.

2. A hydrocyclone quenching tank according to claim 1, characterized in that: The first stirring member (5) comprises an oil pump (51) connected to the quenching tank (4), an oil inlet pipe (52), an external spray pipe (53) and an internal spray pipe (54). The oil pump (51) is used to inject oil into the oil inlet pipe (52). The oil inlet pipe (52) is divided into two paths to enter the quenching inner tank (1). The external spray pipe (53) is connected to one oil inlet pipe (52), and the internal spray pipe (54) is connected to the other oil inlet pipe (52). The external spray pipe (53) and the internal spray pipe (54) are both annular. The diameter of the external spray pipe (53) is larger than that of the internal spray pipe (54). Both the external spray pipe (53) and the internal spray pipe (54) are provided with spray heads (55). The angles between the spray heads (55) and the external spray pipe (53) and the internal spray pipe (54) are 30°-60° and are inclined in the same direction.

3. A hydrocyclone quenching tank according to claim 2, characterized in that: The second stirring member (6) comprises a plurality of oil passage grooves (61) provided on the quenching base (3), wherein the oil passage grooves (61) are provided at an angle, and the angle of inclination of the oil passage grooves (61) is consistent with the angle of inclination of the spray head (55).

4. A hydrocyclone quenching tank according to claim 3, characterized in that: The second stirring member (6) further comprises a manifold (62) arranged on the quenching base (3); the manifold (62) is connected to any number of oil passage grooves (61) and has an angle consistent with that of the oil passage grooves (61); an oil inlet (8) is provided on a side wall of the manifold (62); the rotating oil in the quenching inner groove (1) enters the manifold (62) through the oil inlet (8) and enters the inner ring of the product through the oil grooves (61), thereby driving the oil in the inner ring of the product to rotate.

5. A hydrocyclone quenching tank according to claim 4, characterized in that: The cross section of the manifold (62) is triangular, the corners of the manifold (62) face the rotation direction of the oil, and the oil inlet (8) is opened on the corners facing the oil. An arc-shaped guide platform is arranged inside the manifold (62), and the guide platform is used to change the flow direction of the oil in the manifold (62) so that the oil flows along the manifold (62). The inner diameter of the manifold (62) gradually decreases to increase the oil injection pressure.

6. A hydrocyclone quenching tank according to claim 5, characterized in that: The manifold (62) is provided with a sealing member for closing the oil inlet (8). The sealing member is used to close the oil inlet (8) when the liquid level in the quenching inner tank (1) rotates and rises and passes through the oil tank (61) into the inner ring of the product. When the rotation speed of the oil in the inner ring of the product decreases, the sealing member is used to open the oil inlet (8) so that the oil pushes the oil in the inner ring of the product to rotate rapidly.

7. The hydrocyclone quenching tank according to claim 3, characterized in that: The quenching base (3) is provided with a plurality of expansion blocks (10) for fixing the product, and flow grooves (11) are left between adjacent expansion blocks (10). The flow grooves (11) are inclined to form an angle so that the oil in the flow grooves (11) rotates and flows.

8. The hydrocyclone quenching tank according to claim 1, characterized in that: Two layers of mesh (12) are arranged in the quenching inner tank (1), the two layers of mesh (12) are both annular and fit together, a plurality of filter holes (13) are opened on the mesh (12), the filter holes (13) on the two layers of mesh (12) are interconnected, a gap is left between the mesh (12) close to the quenching inner tank (1) and the quenching inner tank (1), when the oil rotates, impurities in the oil pass through the filter holes (13) to between the mesh (12) and the inner wall of the quenching tank (4), the mesh (12) close to the quenching inner tank (1) is rotatably arranged in the quenching inner tank (1), the rotation axis of the mesh (12) is coaxial with the quenching inner tank (1), and also includes a driving member for driving the mesh (12) to rotate and displace with the outer mesh (12) to close the filter holes (13).

9. A hydrocyclone quenching tank according to claim 8, characterized in that: The driving member comprises a driving motor (14) arranged at the top end of the quenching outer tank (2), the length direction of the output shaft of the driving motor (14) is perpendicular to the axial direction of the quenching outer tank (2), a driving gear (15) is arranged on the output shaft of the driving motor (14), an annular rack (16) is arranged at the end of the mesh sheet (12) close to the inner wall of the quenching inner tank (1), and the driving gear (15) and the annular rack (16) are meshed with each other.

10. The hydrocyclone quenching tank according to claim 8, characterized in that: The filter hole (13) is open and connected to the mesh sheet (12), and the open surface of the filter hole (13) is arc-shaped.

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