Steel wire quenching device and special-shaped spring steel wire quenching process

Abstract

The invention relates to the technical field of quenching, in particular to a steel wire quenching device and a special-shaped spring steel wire quenching process, and the steel wire quenching device comprises a quenching tank containing cooling liquid and a cooling unit used for pumping out and cooling the cooling liquid in the quenching tank and then circulating the cooling liquid back to the quenching tank; the cooling unit comprises a liquid taking unit communicated with the quenching tank, a liquid discharging opening is formed in the lower portion of the liquid taking unit, a throwing disc is rotationally arranged under the liquid discharging opening and used for receiving cooling liquid falling from the liquid discharging opening, and the periphery of the throwing disc is sleeved with a first cooling shell; the liquid taking unit sucks out cooling liquid in the quenching tank and then discharges the cooling liquid from the liquid discharging port, the cooling liquid is discharged from the liquid discharging port in a quantitative intermittent mode, and an annular gap exists between the throwing disc and the inner wall of the first cooling shell. And the cooling liquid falling on the throwing disc is uniformly thrown into the annular gap under the action of centrifugal force and falls into the bottom of the first cooling shell. According to the invention, the cooling liquid can be rapidly cooled.

Description

Technical Field

[0001] The invention relates to the technical field of quenching, and in particular to a steel wire quenching device and a quenching process for special-shaped spring steel wires. Background Art

[0002] The quenching and tempering process is an important link in the production of high-strength spring steel wire. In the existing process, when the steel wire is cooled by cooling water, the cooling water will absorb a large amount of heat, causing the temperature of the cooling water to gradually increase, so that the cooling effect of the cooling water gradually decreases as the processing proceeds. In order to avoid the above situation, the existing technology is mostly to extract the cooling water and circulate it for cooling, but it often requires manual control and has a low degree of automation.

[0003] Chinese patent CN116875796B discloses an oil temperature control device for quenching spring steel wire, including an oil tank, one end of the oil tank is connected to the pump body through an oil outlet pipe, and the other end is connected to the pump body through an oil inlet pipe, and also includes a cylinder, a circulation machine and a control component; the oil inlet pipe runs through the cylinder, and cooling water is injected into the cylinder; the output end of the circulation machine is connected to the upper part of the cylinder through a cooling water inlet pipe, and the input end is connected to the lower part of the cylinder through a cooling water outlet pipe, and the control component includes a box body, a switch assembly and a control assembly, a partition is provided in the box body to divide the box body into an upper cavity and a lower cavity, a switch assembly is provided in the upper cavity, the left and right ends of the lower cavity are opened, and the left and right ends are blocked by light-transmitting plates, the two light-transmitting plates are provided with heat-conducting rods with free ends extending into the oil inlet pipe, and the opposite sides of the two light-transmitting plates are coated with 50°C temperature-changing ink and 70°C temperature-changing ink respectively, and two control assemblies in a left-right symmetrical state are provided in the box body, each Each control component includes an electromagnet and a battery, the positive electrode of the battery and the input end of the electromagnet are connected via a D wire, the negative electrode of the battery and the output end of the electromagnet are connected via an E wire, and the E wire is connected to a photoresistor located in the lower cavity, the photoresistors on the two control components correspond to the light-transmitting plates on the same side and are close to the light-transmitting plates on the same side, the heat-conducting rod controls the resistance change of the photoresistor on the same side according to the change of the quenching oil temperature in the oil inlet pipe, the light-transmitting plate where the heat conduction is located, the 50°C temperature-variable ink and the 70°C temperature-variable ink according to the color change, thereby controlling the electromagnet and the battery on the same side to form a path or a circuit break, when the electromagnet and the battery of the control component on the 70°C temperature-variable ink side form a path, the control component on the 70°C temperature-variable ink side controls the switch component to start the circulation machine, and when the electromagnet and the battery of the control component on the 50°C temperature-variable ink side form a circuit break, the control component on the 50°C temperature-variable ink side controls the switch component to stop the circulation machine.

[0004] The above scheme stabilizes the temperature of the coolant between 50 and 70 degrees, ensuring the temperature stability of the coolant, but it is unable to quickly cool the coolant, and the cooled coolant is mostly located on one side of the cooling tank when it is injected back into the cooling tank, which results in the coolant temperature on one side of the cooling tank being high and the coolant temperature on the other side being low. When the quenched steel wire is quenched in the above coolant, uneven cooling will occur. Summary of the invention

[0005] In view of the above problems, a steel wire quenching device and a quenching process for special-shaped spring steel wire are provided. The quenching device is provided with a cooling unit, and the cooling unit includes a liquid taking unit, a spreading plate and a first cooling shell. The liquid taking unit extracts the coolant in the upper layer of the quenching tank. This is because the steel wire to be quenched is located in the upper layer of the coolant, so the temperature of the coolant in the upper layer is relatively high. The coolant injection side of the quenching tank is located at the lower side of the quenching tank. After the high-temperature coolant in the upper layer is extracted, the coolant on the lower side of the quenching tank can rise and be replenished into the upper part of the coolant to achieve continuous cooling of the steel wire. After the liquid taking unit extracts the coolant in a high-temperature state, the coolant is discharged through the drain port in a quantitative and intermittent manner, so that the amount of coolant discharged through the drain port each time starts The cooling plate is always in a constant state, and the drainage method of the drainage port is quantitative intermittent, that is, the drainage port will stop draining for a period of time each time the drainage is completed, and the spreading plate can completely sprinkle the coolant falling on it during the said time. Since the spreading plate is always in a rotating state, under the action of centrifugal force, the spreading plate can evenly sprinkle the coolant in the annular gap around it and fall into the bottom of the first cooling shell under the action of gravity. After being sprinkled by the spreading plate, the coolant that was originally gathered together forms individual liquid beads, and the heat dissipation area is greatly increased. Compared with the traditional heat dissipation method, the heat dissipation effect is better, and the gap between the drainage port quantitatively transports the coolant, which effectively controls the amount of coolant discharged from the drainage port, and ensures the effect of the spreading plate sprinkling the coolant into liquid beads.

[0006] To solve the problems of the prior art, the present invention provides a steel wire quenching device, comprising a quenching tank containing coolant and a cooling unit for extracting the coolant in the quenching tank and circulating it back to the quenching tank after cooling; the cooling unit comprises a liquid taking unit communicated with the quenching tank, a liquid discharge port is provided at the lower portion of the liquid taking unit, a spreading plate is rotatably arranged directly below the liquid discharge port, the spreading plate is used to receive the coolant falling from the liquid discharge port, a first cooling shell is provided on the outer periphery of the spreading plate, the liquid taking unit sucks the coolant in the quenching tank and discharges it from the liquid discharge port, the coolant is discharged from the liquid discharge port in a quantitative intermittent manner, an annular gap exists between the spreading plate and the inner wall of the first cooling shell, the coolant falling on the spreading plate is evenly thrown into the annular gap under the action of centrifugal force and falls into the bottom of the first cooling shell.

[0007] Preferably, a diverter cone is fixedly provided on the upper part of the spreading disc along the axis of the spreading disc, with the tip of the diverter cone facing vertically upward, and a raised rib is fixedly provided on the spreading disc along the radial direction of the spreading disc, and there are a plurality of raised ribs, which are evenly distributed on the spreading disc around the axis of the spreading disc.

[0008] Preferably, the liquid collection pan is rotatably arranged on the upper part of the liquid discharge port, the axis of the liquid collection pan is parallel to the horizontal plane, and a plurality of liquid collection grooves are evenly distributed around the axis of the liquid collection pan on the peripheral wall of the liquid collection pan. The liquid collection grooves are used to store coolant, and when the liquid collection grooves coincide with the liquid discharge port, the coolant in the liquid collection grooves can be discharged from the liquid discharge port.

[0009] Preferably, overflow ports are respectively provided on both sides of the quenching tank, and the overflow ports located on both sides of the quenching tank are symmetrical with respect to the extension direction of the quenching tank. An annular bin is sleeved on the periphery of the quenching tank, and the annular bin is used to receive the coolant overflowing from the overflow port, and the liquid taking unit is connected to the annular bin.

[0010] Preferably, a hair dryer is provided at the lower side of the first cooling shell, and the hair dryer blows external air into the first cooling shell, and the air entering the first cooling shell flows from bottom to top.

[0011] Preferably, a second cooling shell is provided on the outer periphery of the first cooling shell, a cooling gap exists between the first cooling shell and the second cooling shell, the cooling gap is an annular structure, rotating blades are rotatably provided at the bottom of the second cooling shell, the rotating blades make the air flow in the cooling gap in a vertical direction, a plurality of heat dissipating fins are provided in the cooling gap, and the heat dissipating fins are arranged on the peripheral wall of the first cooling shell along the extension direction of the first cooling shell.

[0012] Preferably, a gear ring is fixedly sleeved on the periphery of the rotating blade, and a driving unit is meshed on one side of the gear ring, and the driving unit is used to drive the gear ring to rotate.

[0013] Preferably, a screening shell is rotatably arranged at the bottom of the first cooling shell, the upper opening of the screening shell is larger than the lower opening of the screening shell, and screening holes are evenly arranged on the side wall of the screening shell. The screening shell screens out the liquid part of the coolant through the screening holes, and the metal debris remaining in the coolant is discharged from the bottom opening of the screening shell.

[0014] Preferably, an injection pipe with a through hole is provided at the bottom of the quenching tank along the extension direction of the quenching tank, and the injection pipe is located at the bottom of the quenching tank. The injection pipe re-injects the cooled coolant into the quenching tank.

[0015] The present invention also relates to a quenching process for special-shaped spring steel wire, which uses a steel wire quenching device. The quenching process includes a cooling liquid cooling circulation process. The specific steps of the cooling liquid cooling circulation process are as follows: S1, the liquid taking unit extracts the coolant in the upper layer of the quenching tank, and discharges the extracted coolant quantitatively and intermittently through the drain port; S2. The coolant discharged through the drain port falls on the continuously rotating spreading disc, and the spreading disc uses centrifugal force to spread the coolant falling on the spreading disc to the annular gap and form liquid droplets of coolant. The liquid droplets of coolant fall to the bottom of the first cooling shell under the action of their own gravity, and when the liquid droplets of coolant fall, flowing air from bottom to top is generated in the first cooling shell, and the flowing air further cools the falling liquid droplets of coolant, and the coolant falling to the bottom of the first cooling shell is re-injected into the quenching tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a cooling unit, which includes a liquid taking unit, a spreading plate and a first cooling shell. The liquid taking unit extracts the cooling liquid in the upper layer of the quenching tank. This is because the steel wire to be quenched is located in the upper layer of the cooling liquid, so the temperature of the cooling liquid in the upper layer is relatively high. The cooling liquid injection side of the quenching tank is located at the lower side of the quenching tank. After the high-temperature cooling liquid in the upper layer is extracted, the cooling liquid on the lower side of the quenching tank can rise and be replenished into the upper layer of the cooling liquid to achieve continuous cooling of the steel wire. After the liquid taking unit extracts the cooling liquid in a high-temperature state, the cooling liquid is quantitatively and intermittently discharged through the drain port, so that the amount of cooling liquid discharged through the drain port each time is always in a constant state, and the drainage method of the drain port is It is a quantitative intermittent type, that is, the drain port will stop draining for a period of time each time after the drainage is completed. The spreading plate can use the said time to completely sprinkle the coolant that has fallen on it. Since the spreading plate is always in a rotating state, under the action of centrifugal force, the spreading plate can evenly sprinkle the coolant in the annular gap around it and fall into the bottom of the first cooling shell under the action of gravity. After being sprinkled by the spreading plate, the coolant that was originally gathered together forms individual liquid droplets, and the heat dissipation area is greatly increased. Compared with the traditional heat dissipation method, the heat dissipation effect is better, and the coolant is quantitatively transported in the gap of the drain port, which effectively controls the amount of coolant discharged from the drain port, ensuring the effect of the spreading plate sprinkling the coolant into liquid droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a steel wire quenching device.

[0018] Figure 2 It is a side view of a steel wire quenching device.

[0019] Figure 3 It is a wire quenching device Figure 2 Schematic cross-sectional view at AA in the middle.

[0020] Figure 4 The invention is a cutaway stereoscopic schematic diagram of a steel wire quenching device.

[0021] Figure 5 It is a wire quenching device Figure 4 A local enlarged schematic diagram of point B in the middle.

[0022] Figure 6 It is a wire quenching device Figure 4 A partial enlarged schematic diagram of point C in the middle.

[0023] Figure 7 It is a wire quenching device Figure 4 A partial enlarged schematic diagram of point D in the middle.

[0024] Figure 8 It is a wire quenching device Figure 4 A partial enlarged schematic diagram of point E in the middle.

[0025] Fig. 9 The present invention is a three-dimensional schematic diagram of a steel wire quenching device with the second cooling shell removed.

[0026] Fig.10 The invention discloses a three-dimensional schematic diagram of a steel wire quenching device after removing a liquid taking shell, a temporary storage shell, a second cooling shell and a first cooling shell.

[0027] The numbers in the figure are: 1. Quenching tank; 11. Conveying wheel; 12. Overflow port; 13. Annular bin; 2. Cooling unit; 21. Liquid taking unit; 211. Liquid taking tray; 212. Liquid taking tank; 213. Liquid discharge port; 214. Liquid taking shell; 215. Temporary storage shell; 216. First water pump; 217. First rotary driver; 22. Sprinkling plate; 221. Diverter cone; 222. Raised ridge; 23. First cooling shell; 24. Blower; 25. Heat dissipation fin; 26. Second cooling shell; 261. Rotating blade; 27. Gear ring; 28. Drive unit; 281. Second rotary driver; 282. Gear; 3. Steel wire; 4. Screening shell; 41. Extension pipe; 42. Scraper; 5. Collecting shell; 6. Injection pipe; 61. Connecting pipe; 62. Second water pump; 63. One-way valve. DETAILED DESCRIPTION

[0028] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Reference Figure 1-Figure 3 and Figure 6A steel wire quenching device comprises a quenching tank 1 for receiving a coolant and a cooling unit 2 for extracting the coolant in the quenching tank 1 and cooling it and then circulating it back to the quenching tank 1; the cooling unit 2 comprises a liquid taking unit 21 communicated with the quenching tank 1, a liquid discharge port 213 is provided at the lower portion of the liquid taking unit 21, a spilling plate 22 is rotatably arranged directly below the liquid discharge port 213, the spilling plate 22 is used to receive the coolant falling from the liquid discharge port 213, a first cooling shell 23 is provided on the outer periphery of the spilling plate 22, the liquid taking unit 21 sucks out the coolant in the quenching tank 1 and then discharges it from the liquid discharge port 213, the coolant is discharged from the liquid discharge port 213 in a quantitative intermittent manner, an annular gap exists between the spilling plate 22 and the inner wall of the first cooling shell 23, the coolant falling on the spilling plate 22 is evenly thrown into the annular gap under the action of centrifugal force and falls into the bottom of the first cooling shell 23.

[0030] The quenching tank 1 is a long strip tank structure. A plurality of rotating conveying wheels 11 are arranged in the quenching tank 1 along the extension direction of the quenching tank 1. The rotation speeds of all conveying wheels 11 are the same. When quenching the steel wire 3, the heated steel wire 3 is first extended into the quenching tank 1 from one end of the conveying wheel 11 group arranged along the extension direction of the quenching tank 1. The upper part of the steel wire 3 contacts the lower part of the conveying wheel 11. The conveying wheel 11 can press the steel wire 3 while conveying the steel wire 3. The liquid level of the coolant in the quenching tank 1 is always higher than the contact position between the lower part of the conveying wheel 11 and the steel wire 3. In this way, the steel wire 3 can complete the quenching under the conveying guidance of the conveying wheel 11 when entering the quenching tank 1. The quenching time can be changed by adjusting the rotation speed of the conveying wheel 11, that is, it is necessary to adjust the rotation speed of the conveying wheel 11. The longer the quenching time of the steel wire 3, the slower the speed of the conveying wheel 11. The shorter the quenching time of the steel wire 3, the faster the speed of the conveying wheel 11. The main purpose of quenching is to improve the hardness and strength of the steel wire 3. Therefore, it is necessary to make the temperature of the coolant lower during quenching of the steel wire 3, so that the steel wire 3 can be cooled quickly. Such a good cooling unit 2 is an important part of the quenching device. The traditional cooling unit 2 needs to cool the coolant by water cooling or by a longer pipeline. When water cooling, a large amount of water resources is required. When cooling through a longer pipeline, metal particles mixed in the coolant will remain in the pipeline. Long-term use can easily lead to pipeline blockage. If the pipeline is arranged too densely, the coolant in the pipeline will not be able to be cooled well. In order to avoid the above situation, the cooling unit 2 is improved. The cooling unit 2 in the present invention includes a liquid taking unit 21, a spreading plate 22 and a first cooling shell 23. The liquid taking unit 21 extracts the coolant in the upper layer of the quenching tank 1. This is because the steel wire 3 to be quenched is located in the upper layer of the coolant, so the temperature of the coolant in the upper layer is relatively high. The coolant injection side of the quenching tank 1 is located on the lower side of the quenching tank 1. After the high-temperature coolant in the upper layer is extracted, the coolant on the lower side of the quenching tank 1 can rise and be replenished into the upper part of the coolant to achieve continuous cooling of the steel wire 3. After the liquid taking unit 21 extracts the coolant in a high-temperature state, the coolant is quantitatively and intermittently discharged through the drain port 213, so that the amount of coolant discharged through the drain port 213 each time starts The cooling liquid is finally in a constant state, and the drainage method of the drainage port 213 is quantitative intermittent, that is, the drainage port 213 will stop draining for a period of time each time the drainage is completed, and the throwing plate 22 can use the said time to completely throw the coolant falling on the upper part thereof. Since the throwing plate 22 is always in a rotating state, under the action of centrifugal force, the throwing plate 22 can evenly sprinkle the coolant in the annular gap around it and fall into the bottom of the first cooling shell 23 under the action of gravity. After being thrown by the throwing plate 22, the coolant originally gathered together forms individual liquid beads, and the heat dissipation area is greatly increased. Compared with the traditional heat dissipation method, the heat dissipation effect is better, and the gap of the drainage port 213 quantitatively transports the coolant, which effectively controls the amount of coolant discharged from the drainage port 213.This ensures that the splashing plate 22 splashes the coolant into liquid beads.

[0031] Reference Fig.10 A diverter cone 221 is fixedly provided on the upper part of the diverter cone 22 along the axis of the diverter cone 22, with the tip of the diverter cone 221 facing vertically upward, and a raised rib 222 is fixedly provided on the diverter disc 22 along the radial direction of the diverter disc 22, and a plurality of raised ribs 222 are provided, and the raised ribs 222 are evenly distributed on the diverter disc 22 around the axis of the diverter disc 22.

[0032] The drain port 213 is located directly above the spill tray 22. The coolant discharged through the drain port 213 first passes through the diverter cone 221 before falling to the upper part of the spill tray 22. The diverter cone 221 diverts the falling coolant so that the coolant is evenly distributed around the spill tray 22. The raised ribs 222 provided on the spill tray 22 can prevent the coolant from slipping on the spill tray 22. That is, when the raised ribs 222 are not provided, the coolant falling on the spill tray 22 will be When the throwing disc 22 rotates, the coolant rolling on the throwing disc 22 can be intercepted by the protruding ribs 222 and the intercepted coolant can be thrown out along the radial direction of the throwing disc 22.

[0033] Reference Fig. 9 and Fig.10 The liquid collecting pan 211 is rotatably arranged on the upper part of the liquid discharge port 213, and the axis of the liquid collecting pan 211 is parallel to the horizontal plane. A plurality of liquid collecting grooves 212 are evenly distributed around the axis of the liquid collecting pan 211 on the peripheral wall of the liquid collecting pan 211, and the liquid collecting grooves 212 are used to store coolant. When the liquid collecting grooves 212 coincide with the liquid discharge port 213, the coolant in the liquid collecting grooves 212 can be discharged from the liquid discharge port 213.

[0034] The liquid taking unit 21 further includes a liquid taking shell 214, a temporary storage shell 215 and a first water pump 216. The liquid taking sleeve is sleeved on the outside of the liquid taking plate 211. The liquid taking tank 212 on the liquid taking plate 211 and the inner wall of the liquid taking shell 214 form a liquid taking cavity. The liquid discharge port 213 is provided at the lower part of the liquid taking shell 214. The upper part of the liquid taking shell 214 is provided with a connecting port, and a temporary storage shell 215 is provided on the connecting port. The coolant in the quenching tank 1 first enters the temporary storage shell 215 for temporary storage. The side wall of the temporary storage shell 215 is provided with a first water pump 216 that can pump the coolant in the quenching tank 1 into the temporary storage shell 215. The water pump 216 on the side wall of the liquid taking shell 214 is provided with a first water pump 216 that can pump the coolant in the quenching tank 1 into the temporary storage shell 215. A first rotating driver 217 is horizontally arranged, and an output end of the first rotating driver 217 is fixedly connected to an end of the liquid collecting plate 211. The first rotating driver 217 is used to drive the liquid collecting plate 211 to rotate. The first rotating driver 217 is preferably a servo motor. After the coolant enters the temporary storage shell 215 under the action of the first water pump 216, when the liquid collecting plate 211 drives the liquid collecting tank 212 to rotate to the upper side, the liquid collecting tank 212 is the same as the connecting port, and the coolant in the temporary storage shell 215 can enter the liquid collecting tank 212. Under the rotation of the liquid collecting plate 211, the liquid collecting tank 212 drives the coolant to be discharged from the drain port 213.

[0035] Reference Figure 4 and Figure 5 Overflow ports 12 are respectively provided on both sides of the quenching tank 1. The overflow ports 12 on both sides of the quenching tank 1 are symmetrical with respect to the extension direction of the quenching tank 1. An annular bin 13 is sleeved on the periphery of the quenching tank 1. The annular bin 13 is used to receive the coolant overflowing from the overflow ports 12. The liquid taking unit 21 is connected to the annular bin 13.

[0036] In this way, both sides of the quenching tank 1 can discharge the high-temperature coolant at the same time and be received by the annular bin 13, ensuring that the temperature of the coolant in the quenching tank 1 is evenly distributed. If an overflow port 12 is set on one side of the quenching tank 1, and the steel wire 3 must be located in the middle position of the quenching tank 1 when being transported in the quenching tank 1, only one overflow port 12 is set, which may easily lead to uneven temperature distribution of the quenching tank 1 in the width direction of the quenching tank 1. In addition, since the high-temperature coolant on one side of the steel wire 3 cannot be discharged in time, the temperature of the coolant in direct contact with the steel wire 3 will also increase, thereby reducing the cooling effect of the coolant on the steel wire 3.

[0037] Reference Fig. 9 and Fig.10 A blower 24 is provided at the lower side of the first cooling shell 23. The blower 24 blows external air into the first cooling shell 23. The air entering the first cooling shell 23 flows from bottom to top.

[0038] The coolant forms liquid droplets after being thrown by the throwing plate 22. The liquid droplets move in the opposite direction to the flowing air in the first cooling shell 23 during the falling process. The flowing air can quickly absorb the temperature of the falling liquid droplets, thereby achieving the effect of cooling the coolant.

[0039] Reference Figure 7 : A second cooling shell 26 is provided on the outer periphery of the first cooling shell 23, a cooling gap is provided between the first cooling shell 23 and the second cooling shell 26, the cooling gap is an annular structure, a rotating blade 261 is rotatably provided at the bottom of the second cooling shell 26, the rotating blade 261 enables air to flow in a vertical direction in the cooling gap, a plurality of heat dissipating fins 25 are provided in the cooling gap, and the heat dissipating fins 25 are arranged on the peripheral wall of the first cooling shell 23 along the extension direction of the first cooling shell 23.

[0040] The first cooling shell 23 and the second cooling shell 26 are both made of heat-conducting materials, so that the heat dissipation fins 25 can effectively dissipate heat. At the same time, the rotating blades 261 arranged at the lower part of the second cooling shell 26 can make the air in the cooling gap flow in the vertical direction, so that the flowing air can quickly take away the heat from the heat dissipation fins 25. It is worth noting that the air blown into the first cooling shell 23 by the hair dryer 24 flows from bottom to top in the first cooling shell 23. Therefore, it is recommended that when the rotating blades 261 rotate, the air in the cooling gap also flows from bottom to top, thereby avoiding the hot air discharged from the upper part of the first cooling shell 23 being sucked into the cooling gap, thereby reducing the cooling effect.

[0041] Reference Figure 4 , Figure 7 and Fig.10 A gear ring 27 is fixedly sleeved on the periphery of the rotating blade 261, and a driving unit 28 is meshed on one side of the gear ring 27. The driving unit 28 is used to drive the gear ring 27 to rotate.

[0042] The driving unit 28 includes a second rotation driver 281 and a gear 282. The gear 282 is rotatably arranged on one side of the gear ring 27. The gear 282 and the gear ring 27 are meshed with each other. The second rotation driver 281 is arranged at the end of the gear 282. The second rotation driver 281 is used to drive the gear 282 to rotate. The second rotation driver 281 is preferably a servo motor. When the second rotation driver 281 is started, the gear 282 can drive the gear ring 27 to rotate, thereby causing the rotating blade 261 to rotate.

[0043] Reference Figure 3 , Figure 4 , Figure 8 and Fig.10A screening shell 4 is rotatably arranged at the bottom of the first cooling shell 23, the upper opening of the screening shell 4 is larger than the lower opening of the screening shell 4, and screening holes are evenly arranged on the side wall of the screening shell 4. The screening shell 4 screens out the liquid part of the coolant through the screening holes, and the metal debris remaining in the coolant is discharged from the bottom opening of the screening shell 4.

[0044] The screening shell 4 is fixedly connected to the inner ring of the rotating blade 261. When the rotating blade 261 rotates, the screening shell 4 is driven to rotate synchronously. A collecting shell 5 is arranged at the bottom of the screening shell 4. The collecting shell 5 is used to collect the liquid part of the coolant screened from the screening shell 4. An extension pipe 41 is arranged on the lower opening of the screening shell 4. The extension pipe 41 vertically penetrates the bottom of the collecting shell 5. A scraper 42 is fixedly arranged at an angle at the bottom of the first cooling shell 23. The scraper 42 extends to the inner wall of the screening shell 4. When the screening shell 4 rotates, the scraper 42 rotates with the inner wall of the screening shell 4. The blower 24 is arranged on the side wall of the collecting shell 5. 24 The air blown into the first cooling shell 23 needs to pass through the screening shell 4 first, so that when the air flows through the screening holes on the screening shell 4 from the outside to the inside, the metal debris blocking the screening holes can be blown down. In other words, the metal debris is not easy to block the screening holes, and the scraper 42 can scrape off the metal debris remaining on the inner wall of the screening shell 4 when the screening shell 4 rotates and make the metal debris discharged from the lower opening of the screening shell 4 under the action of gravity. It is worth noting that the coolant thrown out by the throwing plate 22 is mostly located in the inner wall area close to the first cooling shell 23, so that the coolant droplets will not be directly discharged from the opening at the bottom of the screening shell 4.

[0045] Reference Figure 3 , Figure 8 and Fig. 9 : An injection pipe 6 with a through hole is arranged at the bottom of the quenching tank 1 along the extension direction of the quenching tank 1. The injection pipe 6 is located at the bottom of the quenching tank 1, and the injection pipe 6 re-injects the cooled coolant into the quenching tank 1.

[0046] A connecting pipe 61 connected to the injection pipe 6 is provided on the side wall of the collecting shell 5, a second water pump 62 is provided on the connecting pipe 61, and a one-way valve 63 is provided at the connection between the connecting pipe 61 and the injection pipe 6. The second water pump 62 injects the coolant in the collecting shell 5 into the injection pipe 6 through the one-way valve 63 and discharges it from the injection pipe 6. The one-way valve 63 is provided to prevent the cooling of metal debris in the quenching tank 1 from flowing back into the injection pipe 6 through the through hole.

[0047] Reference Figure 1-Figure 10 The present invention also relates to a quenching process for special-shaped spring steel wire, which uses a steel wire quenching device. The quenching process includes a cooling liquid cooling circulation process. The specific steps of the cooling liquid cooling circulation process are as follows: S1, the liquid taking unit 21 extracts the coolant in the upper layer of the quenching tank 1, and discharges the extracted coolant quantitatively and intermittently through the drain port 213; S2. The coolant discharged through the drain port 213 falls on the continuously rotating spreading disc 22. The spreading disc 22 uses centrifugal force to spread the coolant falling on the spreading disc 22 to the annular gap and forms liquid droplets of coolant. The liquid droplets of coolant fall to the bottom of the first cooling shell 23 under the action of their own gravity. When the liquid droplets of coolant fall, flowing air from bottom to top is generated in the first cooling shell 23. The flowing air further cools the falling liquid droplets of coolant, and the coolant falling to the bottom of the first cooling shell 23 is re-injected into the quenching tank 1.

[0048] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A steel wire quenching device, comprising a quenching tank (1) containing a coolant and a cooling unit (2) for extracting the coolant in the quenching tank (1) and cooling it and then circulating it back to the quenching tank (1); It is characterized in that The cooling unit (2) comprises a liquid taking unit (21) which is in communication with the quenching tank (1). A liquid discharge port (213) is provided at the bottom of the liquid taking unit (21). A slinging plate (22) is rotatably arranged directly below the liquid discharge port (213). The slinging plate (22) is used to receive the cooling liquid falling from the liquid discharge port (213). A first cooling shell (23) is provided on the outer periphery of the slinging plate (22). The liquid taking unit (21) sucks the cooling liquid in the quenching tank (1) out of the liquid discharge port (213). The cooling liquid is discharged from the liquid discharge port (213) in a quantitative intermittent manner. An annular gap is provided between the slinging plate (22) and the inner wall of the first cooling shell (23). The cooling liquid falling on the slinging plate (22) is evenly thrown into the annular gap under the action of centrifugal force and falls into the bottom of the first cooling shell (23).

2. A steel wire quenching device according to claim 1, characterized in that: A diverter cone (221) is fixedly arranged on the upper part of the diverter cone (22) along the axis of the diverter cone (22), the cone tip of the diverter cone (221) is vertically upward, and a protruding rib (222) is fixedly arranged on the diverter disc (22) along the radial direction of the diverter disc (22), and a plurality of protruding ribs (222) are arranged, and the protruding ribs (222) are evenly distributed on the diverter disc (22) around the axis of the diverter disc (22).

3. A steel wire quenching device according to claim 1, characterized in that: The liquid collecting pan (211) is rotatably arranged at the upper part of the liquid discharge port (213), the axis of the liquid collecting pan (211) is parallel to the horizontal plane, and a plurality of liquid collecting grooves (212) are evenly distributed around the axis of the liquid collecting pan (211) on the peripheral wall of the liquid collecting pan (211), and the liquid collecting grooves (212) are used to store cooling liquid. When the liquid collecting grooves (212) and the liquid discharge port (213) overlap, the cooling liquid in the liquid collecting grooves (212) can be discharged from the liquid discharge port (213).

4. A steel wire quenching device according to claim 1, characterized in that: Overflow ports (12) are respectively provided on both sides of the quenching tank (1), and the overflow ports (12) located on both sides of the quenching tank (1) are symmetrical with respect to the extension direction of the quenching tank (1). An annular bin (13) is sleeved on the periphery of the quenching tank (1), and the annular bin (13) is used to receive coolant overflowing from the overflow ports (12). The liquid collection unit (21) is connected to the annular bin (13).

5. A steel wire quenching device according to claim 1, characterized in that: A blower (24) is arranged on the lower side of the first cooling shell (23), and the blower (24) blows external air into the first cooling shell (23), and the air entering the first cooling shell (23) flows from bottom to top.

6. A steel wire quenching device according to claim 1, characterized in that: A second cooling shell (26) is provided on the outer periphery of the first cooling shell (23); a cooling gap is provided between the first cooling shell (23) and the second cooling shell (26); the cooling gap is an annular structure; rotating blades (261) are rotatably provided at the bottom of the second cooling shell (26); the rotating blades (261) allow air to flow in a vertical direction in the cooling gap; a plurality of heat dissipation fins (25) are provided in the cooling gap; the heat dissipation fins (25) are arranged on the peripheral wall of the first cooling shell (23) along the extension direction of the first cooling shell (23).

7. A steel wire quenching device according to claim 6, characterized in that: A gear ring (27) is fixedly sleeved on the periphery of the rotating blade (261), and a driving unit (28) is meshed on one side of the gear ring (27). The driving unit (28) is used to drive the gear ring (27) to rotate. The driving unit (28) comprises a second rotation driver (281) and a gear (282). The gear (282) is rotatably arranged on one side of the gear ring (27). The gear (282) and the gear ring (27) are meshed with each other. The second rotation driver (281) is arranged at an end of the gear (282). The second rotation driver (281) is used to drive the gear (282) to rotate.

8. A steel wire quenching device according to claim 1, characterized in that: A screening shell (4) is rotatably arranged at the bottom of the first cooling shell (23); an upper opening of the screening shell (4) is larger than a lower opening of the screening shell (4); screening holes are evenly arranged on the side wall of the screening shell (4); the screening shell (4) screens out a liquid portion of the coolant through the screening holes, and metal debris remaining in the coolant is discharged from the bottom opening of the screening shell (4).

9. A steel wire quenching device according to claim 1, characterized in that: An injection pipe (6) with through holes is arranged at the bottom of the quenching tank (1) along the extension direction of the quenching tank (1), and the through holes are evenly distributed on the side wall of the injection pipe (6). The injection pipe (6) is located at the bottom of the quenching tank (1), and the injection pipe (6) re-injects the cooled coolant into the quenching tank (1).

10. A process for quenching special-shaped spring steel wire, using a steel wire quenching device as claimed in any one of claims 1 to 9, characterized in that: The quenching process includes a cooling liquid cooling circulation process. The specific steps of the cooling liquid cooling circulation process are as follows: S1, the liquid extraction unit (21) extracts the coolant in the upper layer of the quenching tank (1), and discharges the extracted coolant quantitatively and intermittently through the liquid discharge port (213); S2. The coolant discharged through the liquid discharge port (213) falls on the continuously rotating splash plate (22). The splash plate (22) splashes the coolant falling on the splash plate (22) to the annular gap through centrifugal force and forms liquid droplets of coolant. The liquid droplets of coolant fall to the bottom of the first cooling shell (23) under the action of their own gravity. When the liquid droplets of coolant fall, flowing air from bottom to top is generated in the first cooling shell (23). The flowing air further cools the falling liquid droplets of coolant. The coolant falling to the bottom of the first cooling shell (23) is re-injected into the quenching tank (1).

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