A quenching stirring device assembly for large ring-shaped forgings

Abstract

The application discloses a large annular forging quenching stirring device assembly, which comprises a quenching pool, a stirring assembly arranged in an annular array and comprising a propeller and a driving unit, and a flow guide assembly fixed in the quenching pool and comprising a flow guide cylinder corresponding to the stirring assembly, wherein the flow guide cylinder comprises a cylindrical section, a transition section and an arc section, the axial lines of the cylindrical sections are parallel to the top distribution center line and are located directly above the corresponding propeller, and the arc sections of adjacent flow guide assemblies are arranged in close proximity. The large annular forging quenching stirring device assembly guides the cylindrical water flow generated in a spiral shape to flow upwards and transitionally forms cooling water flow with a fan-shaped cross section, the cooling water flow discharged from the top of each flow guide cylinder is coaxial, can ensure that the cooling water flow closely and uniformly acts on the surface of the annular forging, ensures that the annular forging is uniformly cooled, avoids the generation of dead angles, improves the quenching efficiency, reduces the rotation time of the propeller, and realizes energy saving.

Description

Technical Field

[0001] This invention relates to the field of quenching technology, and in particular to a quenching and stirring device assembly for large annular forgings. Background Technology

[0002] Large ring forgings are widely used in extremely harsh working conditions such as wind power, nuclear power, aerospace and port machinery. Quenching is the core heat treatment process that determines their final performance. Quenching is used to obtain extremely high comprehensive mechanical properties and meet the hardenability requirements brought about by large size.

[0003] Because large annular forgings face significant thermal and structural stresses when placed in a quenching tank, a propeller is typically installed inside the tank. This propeller is rotated by a rotating device, causing the water to rise. This breaks the vapor film generated on the surface of the forging upon immersion in water and also circulates the water within the quenching tank, promoting uniform heat distribution. This ensures that the cooling rate of the annular forging is uniform in both the radial and axial directions, thus guaranteeing consistent cooling throughout the forging and preventing cracking or deformation caused by excessive temperature differences during quenching.

[0004] However, in existing quenching and cooling devices, the water flow generated by the rotating propeller is cylindrical, while the cooling area of ​​the annular forging has a fan-shaped cross-section. This results in some of the upward-flowing water driven by the propeller not contacting the inner and outer walls of the annular forging for heat exchange. On the one hand, it is necessary to increase the number of upward water circulations to achieve a cooling effect, which inevitably increases the quenching time and reduces the quenching efficiency. On the other hand, it prolongs the time for the propeller to rotate continuously, thereby increasing the power consumption of quenching. Moreover, the upward-flowing water driven by the propeller has a limited range of action. For large annular forgings, increasing the number of propellers to reduce the distribution interval will inevitably increase the cost, while a propeller distribution interval that is too wide is not conducive to uniform cooling of the annular forging.

[0005] Therefore, it is necessary to improve the existing quenching stirring device used for cooling large forgings. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects in the prior art and provide a large ring forging quenching stirring device assembly that reduces costs, ensures cooling uniformity, improves quenching efficiency, and saves power consumption.

[0007] To achieve the above-mentioned technical effects, the technical solution of the present invention is: a large annular forging quenching and stirring device assembly, comprising: Quenching tank; The stirring assembly is arranged in a ring array with the distribution center line extending vertically within the quenching tank. The stirring assembly includes a propeller whose axis is parallel to the distribution center line and located at the bottom of the quenching tank, and a drive unit that drives the propeller to rotate around its own axis. A flow guiding assembly, fixed within the quenching tank, includes flow guiding cylinders corresponding to the stirring assemblies. Each flow guiding cylinder comprises a cylindrical section, a transition section, and an arc-shaped section that are sequentially connected and gradually transition from bottom to top. The centerlines of the cylindrical sections are parallel to the distribution centerline, with their tops located directly above the corresponding propellers. The circumferential inner wall of the arc-shaped section includes an inner arc-shaped surface section and an outer arc-shaped surface section whose centerlines coincide with the distribution centerline. The inner diameter of the inner arc-shaped surface section is smaller than the inner diameter of the annular forging, and the outer diameter of the outer arc-shaped surface section is larger than the outer diameter of the annular forging. The arc-shaped sections of adjacent flow guiding assemblies are arranged close together.

[0008] Preferably, in order to further promote the uniform upward flow of water to the bottom of the annular forging and reduce dead angles, the flow guiding component also includes a diversion barrel with an open top and whose axis coincides with the distribution centerline, the diversion barrel being fixedly connected to the top of the arc cylinder section.

[0009] Preferably, in order to guide the cold water to flow upward and act on the surface of the annular forging, a flow guiding component is further included, the flow guiding component comprising: The bottom ring for drainage has its axis coincide with the distribution centerline and is sealed to the top of the diversion tank. The bottom ring for drainage is provided with a drainage hole that communicates with the diversion tank. The rotating unit drives the drainage base to rotate around its own axis.

[0010] Preferably, to prevent water from detaching radially from the annular forging during heat exchange with the circumferential inner wall and circumferential outer edge, the drainage assembly further includes a drainage outer cylinder and a drainage inner cylinder coaxially fixed to the drainage bottom ring. The inner diameter of the drainage outer cylinder is larger than the inner diameter of the outer arc surface section, and the inner diameter of the drainage inner cylinder is smaller than the inner diameter of the inner arc surface section.

[0011] Preferably, in order to guide the water flow to act on the circumferential inner wall and circumferential outer edge of the annular forging, so that the cold water also has a certain velocity in the horizontal direction, increase the heat exchange area, improve the quenching efficiency, and ensure that the cooling of the annular forging tends to be uniform, the outer wall of the outer drainage cylinder is provided with an outer drainage strip in a ring array, the outer drainage strip being located on the outer side of the cylindrical surface where the outer arc segment is located, and the inner edge of the inner drainage cylinder is provided with an inner drainage strip in a ring array, the inner drainage strip being located on the inner side of the cylindrical surface where the inner arc segment is located.

[0012] Preferably, in order to facilitate the reduction of water flow velocity, both the inner and outer guide bars are inclined in the same direction to reduce the upward flow velocity of water adhering to the outer circumferential edge and inner circumferential wall of the annular forging.

[0013] Preferably, in order to ensure that the rotating unit can stably and safely drive the inner and outer drainage cylinders to rotate, the quenching pool includes a pool body with an open top and a support column fixed in the pool body and extending upward. The support column is coaxial with the distribution centerline. The rotating unit includes a rotating motor fixed to the top of the support column. The output end of the rotating motor is located above the top of the pool body and is fixedly connected to the inner drainage cylinder through a connecting frame.

[0014] Preferably, to further ensure the safe and stable operation of the rotary motor, the connecting frame includes a top cover, a sleeve, and a connecting rod. The top cover is coaxially fixed to the output end of the rotary motor. The axis of the sleeve coincides with the distribution centerline. The top end of the sleeve is fixedly connected to the top cover, and the bottom end extends downward into the pool body and is located inside the inner side of the guide cylinder. The outer wall of the sleeve is fixedly connected to the inner wall of the guide cylinder through the connecting rod. The sleeve is clearance-fitted with the support column. The support column is provided with a wiring through hole extending downward in the vertical direction to the bottom of the pool body.

[0015] Preferably, in order to ensure that all the water flow generated by the propeller can flow upward, the propeller is coaxially positioned within the corresponding cylindrical section after passing through the guide tube, and there is a gap between the bottom end of the cylindrical section and the inner bottom wall of the quenching pool.

[0016] Preferably, in order to facilitate the upward flow of cold water at the bottom of the quenching pool to form a cooling medium for cooling the annular forging, the inner diameter of the bottom end of the cylindrical section is larger than the inner diameter of the top end, and the bottom end of the cylindrical section gradually transitions to the top end.

[0017] In summary, compared with the prior art, the large annular forging quenching stirring device assembly of the present invention guides the spiral-generated cylindrical water flow upward through the guide cylinder and transitions to form a cooling water flow with a fan-shaped cross-section. The cooling water flows discharged from the top of each guide cylinder are close to each other and coaxial, which can ensure that the cooling water flows closely and evenly act on the surface of the annular forging. This ensures that the annular forging is cooled uniformly and consistently, avoids dead corners, improves quenching efficiency, reduces propeller rotation time, and achieves energy saving. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 An explosion diagram; Figure 3 yes Figure 1Top view; Figure 4 yes Figure 1 Cross-sectional structural diagram; Figure 5 yes Figure 4 Enlarged view of part A; Figure 6 yes Figure 4 Enlarged view of part B; Figure 7 This is a schematic diagram of the drainage component of the present invention; Figure 8 yes Figure 7 An explosion diagram; Figure 9 This is a schematic diagram of the flow guiding component of the present invention; Figure 10 A schematic diagram of the flow guiding component of the present invention from another perspective; Figure 11 This is a schematic diagram of the quenching tank of the present invention; Figure 12 This is a structural schematic diagram of the quenching pool of the present invention from another perspective; Figure 13 This is a schematic diagram of the structure of the stirring assembly of the present invention; In the diagram: 1. Quenching pool; 11. Pool body; 12. Support column; 121. Wiring through hole; 122. Air filling through hole; 123. Annular groove; 124. Notch; 125. Air filling groove; 13. Protrusion; 131. Partition plate; 14. Air filling pipe; 141. One-way valve; 15. Drain pipe; 151. Drain valve; 16. Liquid level sensor; 2. Stirring assembly; 21. Propeller; 211. Rotating shaft; 212. Blade; 22. Drive unit; 221. Drive motor; 222. First bearing; 223. Second bearing; 224. Drive gear ; 225. Driven gear; 3. Guide cylinder; 31. Cylindrical section; 311. Flanged edge; 312. Support leg; 32. Transition section; 33. Arc cylinder section; 331. Inner arc surface section; 332. Outer arc surface section; 4. Ring forging; 5. Diverter barrel; 6. Drainage assembly; 61. Drainage bottom ring; 611. Drainage hole; 62. Rotating unit; 621. Rotary motor; 622. Top cover; 623. Sleeve; 6231. Ball bearing; 624. Connecting rod; 63. Outer drainage cylinder; 631. Outer drainage strip; 64. Inner drainage cylinder; 641. Inner drainage strip. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] like Figures 1-13As shown, a large annular forging quenching and stirring device assembly of the present invention includes: Quenching pool 1; The stirring assembly 2 is arranged in a ring array with the distribution center line extending vertically within the quenching tank 1. The stirring assembly 2 includes a propeller 21 whose axis is parallel to the distribution center line and located at the bottom of the quenching tank 1, and a drive unit 22 that drives the propeller 21 to rotate around its own axis. The flow guiding assembly, fixed in the quenching tank 1, includes a flow guiding cylinder 3 corresponding to the stirring assembly 2. The flow guiding cylinder 3 includes a cylindrical section 31, a transition section 32, and an arc section 33 that are connected sequentially from bottom to top and gradually transition to each other. The axis of the cylindrical section 31 is parallel to the distribution center line and the top is located directly above the corresponding propeller 21. The circumferential inner wall of the arc section 33 includes an inner arc surface section 331 and an outer arc surface section 332 whose axis coincides with the distribution center line. The inner diameter of the inner arc surface section 331 is smaller than the inner diameter of the annular forging 4, and the outer diameter of the outer arc surface section 332 is larger than the outer diameter of the annular forging 4. The arc sections 33 of adjacent flow guiding assemblies are arranged close to each other.

[0021] When the large annular forging quenching and stirring device assembly of the present invention is running, the annular forging 4 is transported by a crane so that the annular forging 4 is horizontally positioned in the quenching pool 1, keeping the center line of the annular forging 4 basically coincident with the distribution center line of the stirring assembly 2, and the annular forging 4 is positioned above the flow guiding assembly.

[0022] The quenching tank 1 contains cooling water for cooling the annular forging 4. Before the annular forging 4 is placed into the quenching tank 1, the stirring assembly 2 is kept running and the propeller 21 is driven to rotate by the drive unit 22, which in turn drives the cooling water to flow. When the annular forging 4 is transported by a crane and suspended above the flow guide assembly in the quenching tank 1, the rotating propeller 21 drives the water flow at the bottom to flow upward. Usually, the water temperature at the bottom of the quenching tank 1 is lower than that in the middle and upper parts, so the water flow generated by the propeller 21 is a cooling water flow with a circular cross-section. The cooling water flows upward and enters the flow guide cylinder 3, passing through the cylindrical section 31, the transition section 32 and the arc section 33 in sequence. Since the inner wall of the arc section 33 includes the inner arc surface section 331 and the outer arc surface section 332 whose axis coincides with the distribution center line, the cooling water flow flowing upward from the top of the arc section 33 has a fan-shaped cross-section. Since the arc sections 33 of the adjacent flow guide assemblies are close together, the cooling water flows with a fan-shaped cross-section flowing out of the arc sections 33 of the adjacent flow guide assemblies are arranged in close succession.

[0023] The aforementioned cooling water flows are arranged in close proximity and flow upwards. They first act on the bottom surface of the annular forging 4, impacting the bottom surface of the annular forging 4 and removing the vapor film formed on the bottom surface of the annular forging 4. Since the cross-section of the cooling water flow is fan-shaped, some of the cooling water flows continue to flow upwards and adhere to the circumferential inner wall and circumferential outer edge of the annular forging 4. At the same time, the vapor film on the circumferential inner wall and circumferential outer edge of the annular forging 4 flows upwards, cooling the annular forging 4. Since the adjacent cooling water flows are kept close to each other in the circumferential direction, the uniformity of the annular forging 4 is ensured, reducing the deformation or cracking of the annular forging 4.

[0024] Furthermore, because the outer diameter of the outer arc section 332 of the arc cylinder section 33 in the flow guide assembly is larger than the outer diameter of the annular forging 4 and the inner diameter of the inner arc section 331 is smaller than the inner diameter of the annular forging 4, most of the cooling water flow can act on the bottom surface, circumferential inner wall and circumferential outer edge of the annular forging 4 and exchange heat with the annular forging 4. This avoids a large amount of cooling water flowing upward without participating in heat exchange. In this way, the amount of heat exchanged between the cooling water flow and the annular forging 4 in a single upward flow is increased, thereby reducing the number of times the cooling water flows upward in a cycle. This also helps to reduce the time required for the propeller 21 to rotate, thereby improving quenching efficiency and reducing power consumption, achieving the effect of energy saving.

[0025] In this invention, the quenching tank 1 includes a tank body 11 with an open top. The cross-section of the tank body 11 is a square frame. Four stirring components 2 are provided, and the center line of the annular array distribution of the stirring components 2, i.e., the distribution center line, passes through the center of the bottom of the tank body 11. The four stirring components 2 are respectively located at the center of the four side walls of the quenching tank 1. Correspondingly, the flow guiding components include four flow guiding cylinders 3, which are arranged one-to-one with the four stirring components 2. The bottom of the tank body 11 is also fixedly connected to a drain pipe 15, and a drain valve 151 is provided on the drain pipe 15 to facilitate the discharge of cooling water in the tank body 11.

[0026] A further improvement is that the flow guiding assembly also includes a flow divider 5 with an open top and its axis coinciding with the distribution centerline, the flow divider 5 being fixedly connected to the top of the arc section 33.

[0027] With this design, the upward cooling water flow generated by the four stirring components 2 passes through the four guide tubes 3 one by one and enters the diversion tank 5, driving the water flow in other positions in the diversion tank 5 to flow upward, acting on the bottom surface, circumferential inner wall and circumferential outer edge of the annular forging 4, removing the vapor film on the surface of the annular forging 4, and achieving uniform cooling of the annular forging 4.

[0028] The quenching tank 1 also includes a hollow convex bulge 13 fixed to the four side walls of the tank body 11. The bottom of the convex bulge 13 is connected to the bottom of the tank body 11. A partition 131 fixedly connected to its circumferential inner wall is provided inside the convex bulge 13. An air filling pipe 14 extending vertically is fixedly connected to the top of the convex bulge 13. A one-way valve 141 is provided inside the air filling pipe 14. The inlet of the one-way valve 141 is located above the outlet. The air filling pipe 14 is used to connect to an air filling device, preferably an air pump. The output end of the air pump is connected to the top of the air filling pipe 14. A liquid level sensor 16 located above the partition 131 and facing the partition 131 is also provided on the top wall of the convex bulge 13. In the stirring assembly 2, the propeller 21 includes an axially vertical rotating shaft 211 and blades 212 arranged in a ring array around the axis of the rotating shaft 211 and fixedly connected to the rotating shaft 211. The drive unit 2 2 includes a drive motor 221, a first bearing 222, a second bearing 223, a drive gear 224, and a driven gear 225. The drive motor 221 is fixedly and sealed through the top wall of the bulge 13 and is spaced from the partition 131. The output end of the drive motor 221 extends vertically and passes through the partition 131. The output end is fixedly connected to the inner ring of the first bearing 222 and to the coaxial center line of the drive gear 224. The inner ring of the first bearing 222 is fixedly connected to the partition 131. The drive gear 224 meshes with the driven gear 225. The coaxial center line of the driven gear 225 is fixed to the bottom end of the rotating shaft 211. There are two second bearings 223. The outer ring is fixed to the bottom inner wall of the pool body 11 and the bulge 13. The inner ring of one bearing is fixed below the drive gear 224, and the inner ring of the other bearing is fixed below the driven gear 225.

[0029] With the above structure, when the propeller 21 rotates to push the water with a lower temperature at the bottom of the quenching pool 1 to flow upward to form a cooling water flow, the drive motor 221 starts and drives its output end to rotate under the guidance of the first bearing 222. Thus, under the guidance of the two second bearings 223, the drive gear 224 rotates stably around its own axis, thereby driving the driven gear 225 to rotate. This causes the rotating shaft 211 fixed above the driven gear 225 to rotate, driving the blade 212 to rotate. The low-temperature cooling water in the quenching pool 1 flows upward to form a cooling water flow for cooling the annular forging 4.

[0030] Furthermore, the above structure also ensures the safe operation of the drive unit 22. The water level in the bulge 13 is detected by the liquid level sensor 16, ensuring that the cooling water in the bulge 13 is always at a safe distance from the bottom of the drive motor 221 housing, preventing the drive motor 221 from getting damp. When the water level in the bulge 13 is detected to rise, air is injected into the bulge 13 through the air inlet pipe 14 to increase the air volume in the bulge 13, thereby lowering the water level in the bulge 13. This ensures that there is a sufficient distance difference between the bottom of the drive motor 221 housing and the liquid level in the bulge 13, preventing the drive motor 221 from getting damp.

[0031] A further improvement is that it also includes a traffic diversion component 6, which includes: The bottom ring 61 is centered on the distribution centerline and is sealed to the top of the distribution tank 5. The bottom ring 61 is provided with a drainage hole 611 that communicates with the distribution tank 5. The rotating unit 62 drives the drainage bottom ring 61 to rotate around its own axis.

[0032] Specifically, the drainage holes 611 are arranged in a ring array on the drainage bottom ring 61 with the distribution center line as the center line. Adjacent drainage holes 611 are set close together. With the above structure, the drainage bottom ring 61 is rotated by the rotating unit 62, which changes the position of the drainage holes 611 on the drainage bottom ring 61. When the cooling water flows through the diversion barrel 5, it continues to flow upward and flows upward through the drainage holes 611, acting on the annular forging 4. Since the position of the drainage holes 611 is constantly changing, the position of the cooling water flow acting on the annular forging 4 is constantly changing, thereby ensuring that the cooling water flow can act evenly on the annular forging 4, so that the annular forging 4 is cooled evenly.

[0033] In this invention, the drainage hole 611 is a strip-shaped hole extending radially along the drainage bottom ring 61. Furthermore, when the trolley moves the annular forging 4 until its axis coincides with the distribution centerline, the projection of the drainage hole 611 on the horizontal plane lies within the projection of the annular forging 4 on the horizontal plane. With this design, the cooling water flowing out of the drainage hole 611 and upwards directly acts on the bottom surface of the annular forging 4, impacting the vapor film on its bottom surface and exchanging heat. Then, the water flows radially inwards and outwards. The water flowing inwards then flows upwards, acting on the circumferential inner wall of the annular forging 4, eliminating the vapor film and exchanging heat. Similarly, the water flowing outwards then flows upwards, acting on the circumferential outer edge of the annular forging 4, eliminating the vapor film and exchanging heat. The two water flows work together to achieve uniform cooling of the annular forging 4.

[0034] A further improvement is that the drainage assembly 6 also includes a drainage outer cylinder 63 and a drainage inner cylinder 64, which are coaxially fixed to the drainage bottom ring 61. The inner diameter of the drainage outer cylinder 63 is larger than the inner diameter of the outer arc section 332, and the inner diameter of the drainage inner cylinder 64 is smaller than the inner diameter of the inner arc section 331.

[0035] With the above design, by transporting the annular forging 4 by a crane and suspending it between the outer guide cylinder 63 and the inner guide cylinder 64, the flow range of the upward-flowing cooling water discharged from the guide hole 611 can be limited. This ensures that during the upward flow of the cooling water in contact with the bottom surface of the annular forging 4, the water flow towards the inner side is confined between the circumferential inner wall of the annular forging 4 and the inner guide cylinder 64, preventing the cooling water flow from leaving the circumferential inner wall of the annular forging 4. Meanwhile, the water flow towards the outer side is confined between the circumferential outer edge of the annular forging 4 and the outer guide cylinder 63, preventing the cooling water flow from leaving the circumferential outer edge of the annular forging 4. This increases the contact area between the cooling water flow and the annular forging 4, increases the heat exchange, and thus increases the heat exchange efficiency of the cooling water flow in a single upward flow with the annular forging 4. This reduces the time required for the propeller 21 to rotate and push the cooling water flow upward, achieving energy saving.

[0036] A further improvement is that the outer drainage cylinder 63 has an outer drainage strip 631 arranged in a ring array on its circumferential inner wall, and the outer drainage strip 631 is located on the outer side of the cylindrical surface where the outer arc segment is located. The inner drainage cylinder 64 has an inner drainage strip 641 arranged in a ring array on its circumferential outer edge, and the inner drainage strip 641 is located on the inner side of the cylindrical surface where the inner arc segment is located.

[0037] With the above design, the rotating unit 62 can drive the bottom ring 61, the inner cylinder 64, and the outer cylinder 63 to rotate around the distribution centerline, thereby driving the inner and outer drainage strips 641 and 631 to rotate. This allows the two cooling water streams flowing upward along the inner and outer circumferential walls of the annular forging 4 to flow not only upward but also circumferentially along the annular forging 4. This increases the heat exchange contact area between the cooling water stream and the annular forging 4, improves the cooling rate, and enhances the cooling effect on the annular forging 4 per unit time. At the same time, it ensures that the cooling water stream can fully act on the inner and outer circumferential walls of the annular forging 4, ensuring uniform cooling of the annular forging 4 and preventing deformation of the annular forging 4 due to inconsistent cooling rates at different locations during cooling.

[0038] A further improvement is that both the inner guide bar 641 and the outer guide bar 631 are inclined in the same direction to reduce the upward flow velocity of water adhering to the outer circumferential edge and inner circumferential wall of the annular forging 4.

[0039] When both the inner guide bar 641 and the outer guide bar 631 are inclined and in the same direction, when they rotate synchronously, they can act on the two cooling water streams that are attached to the outer edge and inner wall of the annular forging 4, reducing the flow velocity of the two cooling water streams, prolonging the contact time between the cooling water streams and the annular forging 4, and improving the heat exchange. After being continuously thrust upward by the propeller 21, the cooling water streams flow upward. As the contact time and contact area with the annular forging 4 gradually increase, the temperature of the cooling water streams rises. Compared with the low-temperature water streams in other positions, the upward flow velocity of the heated water streams increases. The inclined and rotating inner guide bar 641 and outer guide bar 631 can suppress the upward flow velocity of the cooling water streams to a certain extent, ensuring that the cooling water streams have sufficient time to contact and exchange heat with the annular forging 4, thus improving the cooling effect on the annular forging 4.

[0040] A further improvement is that the propeller 21 is coaxially positioned within the corresponding cylindrical section 31, with a gap between the bottom end of the cylindrical section 31 and the inner bottom wall of the quenching pool 1; the inner diameter of the bottom end of the cylindrical section 31 is larger than the inner diameter of the top end, and the bottom end of the cylindrical section 31 gradually transitions towards the top end.

[0041] Specifically, the outer circumferential edge and inner circumferential wall of the cylindrical section 31 are both frustoconical, with the bottom dimension being larger than the top dimension. A flange 311 is provided on the outer circumferential edge at the bottom end, and a support leg 312 is integrally formed at the bottom of the flange 311. The support leg 312 is fixed to the bottom of the pool body 11. This creates a certain gap between the bottom of the cylindrical section 31 and the bottom of the pool body 11, which facilitates fixing the position of the guide tube 3 and the diverter 5, keeping them fixed in the quenching pool 1. The bottom dimension of the cylindrical section 31 is larger than the top dimension, which on the one hand facilitates the housing of the propeller 21, and on the other hand, after the propeller 21 rotates, it can guide the low-temperature water flow from other positions at the bottom of the pool body 11 to flow directly below the cylindrical section 31. The thrust generated by the rotation of the propeller 21 forms an upward flow of cooling water, which is used to cool the annular forging 4 above.

[0042] A further improvement is that the quenching tank 1 also includes a support column 12 fixed inside the tank body 11 and extending upward. The support column 12 is coaxial with the distribution centerline. The rotating unit 62 includes a rotating motor 621 fixed to the top of the support column 12. The output end of the rotating motor 621 is located above the top of the tank body 11 and is fixedly connected to the inner cylinder 64 of the drainage tube through a connecting frame.

[0043] After adopting the above design, the rotary motor 621 is supported by the support column 12 fixed in the center of the pool body 11, so that the rotary motor 621 can be higher than the water level in the quenching pool 1. After the rotary motor 621 is running, it drives the inner cylinder 64 to rotate through the connecting frame, thereby driving the outer cylinder 63 and the bottom ring 61 to rotate. While achieving efficient and uniform cooling of the ring forging 4, the safe operation of the rotary motor 621 is ensured.

[0044] A further improvement is that the connecting frame includes a top cover 622, a sleeve 623, and a connecting rod 624. The top cover 622 is coaxially fixed to the output end of the rotary motor 621. The axis of the sleeve 623 coincides with the distribution centerline. The top end of the sleeve 623 is fixedly connected to the top cover 622, and the bottom end extends downward into the pool body 11 and is located inside the inner side of the guide cylinder. The outer wall of the sleeve 623 is fixedly connected to the inner wall of the guide cylinder through the connecting rod 624. The sleeve 623 is clearance-fitted with the support column 12. The support column 12 is provided with a wiring through hole 121 that extends downward along the vertical direction to the bottom of the pool body 11.

[0045] The inner diameter of the sleeve 623 is larger than the outer diameter of the support column 12. The bottom end of the sleeve 623 extends downward to below the water level in the quenching pool 1, so that the sleeve 623, the top cover 622 and the support column 12 form an air cavity, which surrounds the rotary motor 621 and ensures the safe operation of the rotary motor 621. At the same time, after the rotary motor 621 is running, it drives the top cover 622 to rotate through its output shaft, thereby driving the inner cylinder 64 to rotate through the sleeve 623 and the connecting rod 624. The wiring through hole 121 on the support column 12 facilitates the internal installation of cables that supply power and control the operation of the rotary motor 621, ensuring the safe operation of the quenching stirring.

[0046] More specifically, the top of the support column 12 is provided with a notch 124 that is adapted to the housing of the rotary motor 621. The housing of the rotary motor 621 is fixed in the notch 124. The support column 12 is also provided with an inflation hole 122. The inflation hole 122 extends vertically, with its top end located on the inner bottom wall of the notch 124 and its bottom end extending to the bottom of the pool body 11 and used to connect to an external air source. An inflation groove 125 is also provided in the notch 124. The inflation groove 125 is a U-shaped groove, which is provided on the inner bottom wall and inner side wall of the notch 124. Both ends extend to the top of the notch 124, and the middle part communicates with the top end of the inflation hole 122.

[0047] After adopting the above design, an external air source can fill the air cavity through the air inlet 122, so that the air fills the air cavity. The air in the air cavity compresses the cooling water between the sleeve 623 and the outer wall of the support column 12, causing the cooling water level to drop. This prevents the cooling water level fluctuation in the quenching pool 1 from flowing to the top of the support column 12 and affecting the safe operation of the rotary motor 621.

[0048] The inner wall of the sleeve 623 is also provided with recesses arranged in a ring array with its axis as the center line. The surface where the recesses are located is a spherical surface. The inner wall of the recesses is fitted with balls 6231 with the same outer diameter as their inner diameter. The balls 6231 are arranged to rotate around their own center. The center of the balls 6231 is located inside the recesses. The support 12 is also provided with an annular groove 123. The axis of the annular groove 123 coincides with the axis of the support 12. The cross-section of the annular groove 123 is a minor arc shape and the inner diameter of the minor arc cross-section is the same as the outer diameter of the balls 6231. A part of the balls 6231 protruding outside the inner wall of the sleeve 623 is fitted and connected to the inner wall of the annular groove 123.

[0049] With the above structure, the sleeve 623 is supported by the mutual cooperation between the ball bearing 6231 and the recess and annular groove 123 to reduce the support pressure at the output end of the rotary motor 621, while the rotation of the sleeve 623 is limited axially and radially, thereby ensuring the stable rotation of the sleeve 623. Then, the stable rotation of the drainage bottom ring 61, the drainage outer cylinder 63 and the drainage inner cylinder 64 is realized through the connecting rod 624.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A large annular forging quenching and stirring device assembly, characterized in that, include: Quenching tank; The stirring assembly is arranged in a ring array with the distribution center line extending vertically within the quenching tank. The stirring assembly includes a propeller whose axis is parallel to the distribution center line and located at the bottom of the quenching tank, and a drive unit that drives the propeller to rotate around its own axis. A flow guiding assembly, fixed within the quenching tank, includes flow guiding cylinders corresponding to the stirring assemblies. Each flow guiding cylinder comprises a cylindrical section, a transition section, and an arc-shaped section that are sequentially connected and gradually transition from bottom to top. The centerlines of the cylindrical sections are parallel to the distribution centerline, with their tops located directly above the corresponding propellers. The circumferential inner wall of the arc-shaped section includes an inner arc-shaped surface section and an outer arc-shaped surface section whose centerlines coincide with the distribution centerline. The inner diameter of the inner arc-shaped surface section is smaller than the inner diameter of the annular forging, and the outer diameter of the outer arc-shaped surface section is larger than the outer diameter of the annular forging. The arc-shaped sections of adjacent flow guiding assemblies are arranged close together.

2. The large annular forging quenching and stirring device assembly according to claim 1, characterized in that: The flow guiding assembly also includes a flow divider barrel with an open top and whose centerline coincides with the distribution centerline, the flow divider barrel being fixedly connected to the top end of the arc-shaped section.

3. The large annular forging quenching and stirring device assembly according to claim 1, characterized in that: It also includes a diversion component, which includes: The bottom ring for drainage has its axis coincide with the distribution centerline and is sealed to the top of the diversion tank. The bottom ring for drainage is provided with a drainage hole that communicates with the diversion tank. The rotating unit drives the drainage base to rotate around its own axis.

4. The large annular forging quenching and stirring device assembly according to claim 3, characterized in that: The drainage assembly also includes a drainage outer cylinder and a drainage inner cylinder, which are coaxially fixed to the drainage bottom ring. The inner diameter of the drainage outer cylinder is larger than the inner diameter of the outer arc section, and the inner diameter of the drainage inner cylinder is smaller than the inner diameter of the inner arc section.

5. The large annular forging quenching and stirring device assembly according to claim 4, characterized in that: The outer drainage cylinder has an outer drainage strip arranged in a ring array on its circumferential inner wall. The outer drainage strip is located outside the cylindrical surface where the outer arc segment is located. The inner drainage cylinder has an inner drainage strip arranged in a ring array on its circumferential outer edge. The inner drainage strip is located inside the cylindrical surface where the inner arc segment is located.

6. The large annular forging quenching and stirring device assembly according to claim 5, characterized in that: Both the inner and outer drainage strips are inclined in the same direction to reduce the upward flow velocity of water adhering to the outer circumferential edge and inner circumferential wall of the annular forging.

7. The large annular forging quenching and stirring device assembly according to claim 4, characterized in that: The quenching tank includes a tank body with an open top and a support column fixed inside the tank body and extending upward. The support column is coaxial with the distribution centerline. The rotating unit includes a rotary motor fixed to the top of the support column. The output end of the rotary motor is located above the top of the tank body and is fixedly connected to the inner drainage cylinder through a connecting frame.

8. The large annular forging quenching and stirring device assembly according to claim 7, characterized in that: The connecting frame includes a top cover, a sleeve, and a connecting rod. The top cover is coaxially fixed to the output end of the rotary motor. The axis of the sleeve coincides with the distribution centerline. The top end of the sleeve is fixedly connected to the top cover, and the bottom end extends downward into the pool body and is located inside the inner side of the flow guide cylinder. The outer wall of the sleeve is fixedly connected to the inner wall of the flow guide cylinder through the connecting rod. The sleeve is clearance-fitted with the support column. The support column is provided with a wiring through hole extending downward in the vertical direction to the bottom of the pool body.

9. The large annular forging quenching and stirring device assembly according to any one of claims 1-8, characterized in that: The propeller is coaxially positioned within the corresponding cylindrical section, and the bottom end of the cylindrical section is spaced apart from the inner bottom wall of the quenching pool.

10. The large annular forging quenching and stirring device assembly according to claim 9, characterized in that: The inner diameter of the bottom end of the cylindrical section is larger than the inner diameter of the top end, and the bottom end of the cylindrical section gradually transitions towards the top end.

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