A tapered tube quenching system and use method thereof

Abstract

The invention discloses a tapered tube quenching system and a use method thereof, and relates to the technical field of tapered tube quenching processing, comprising a digital power supply, an electrical control cabinet, a power supply cooling tower, a water cooler, and a tapered tube, wherein the digital power supply is electrically connected to the electrical control cabinet and a quenching machine tool, the electrical control cabinet is electrically connected to the quenching machine tool, the power supply cooling tower, and the water cooler, the water cooler is connected to a cooling circulation water tank, and the cooling circulation water tank is connected to the quenching machine tool; the quenching machine tool comprises a frame, a quenching liquid circulation box is arranged on one side of the frame, and the quenching liquid circulation box is connected to the cooling circulation water tank, a quenching processing box is arranged on the frame, an induction heating coil and an outer wall quenching assembly are fixedly arranged in the quenching processing box, an inner wall quenching assembly is adjustably arranged on the frame, and both the inner wall quenching assembly and the outer wall quenching assembly are connected to the quenching liquid circulation box; the problems of low automation, poor quenching quality of tapered tubes, and easy contamination of quenching liquid in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of tapered tube quenching processing, in particular to a tapered tube quenching system and a use method thereof. Background Art

[0002] Seamless conical steel pipe refers to a conical hollow round pipe with different diameters at both ends, which is made of seamless steel pipe as raw material and processed by heat expansion process. There is no butt joint or weld in the middle of the seamless conical steel pipe body, and the surface is smooth. It is referred to as a tapered pipe. The tapered pipe is a variable cross-section pipe, which is a transition element between pipelines of different diameters in engineering cement transportation systems and ship systems. The main material is carbon steel, and it can also be stainless steel or alloy steel. Quenching treatment is a common process for heat treatment of tapered pipes. After quenching treatment, the hardness and wear resistance can be greatly improved. There are many existing quenching processes for tapered pipes, but they all have problems such as serious pollution, complex process flow, difficulty in manual operation and low yield. At the same time, in the existing technology, because the entire quenching system is too simple, most of them have the phenomenon that the quenching liquid is easily contaminated. The common sources of quenching liquid contamination include oil pollution, insoluble solid particle pollution and water-soluble pollution. Therefore, the cooling circulation process of the quenching liquid of the quenching machine is extremely important.

[0003] Chinese patent CN102912094B discloses a quenching machine. This quenching machine adopts a vertical structure. Through the setting of the workpiece slide, the sensor moving slide and the power switch, it can not only realize the induction quenching of the workpiece by moving the workpiece up and down and fixing the sensor, but also realize the positioning and rotation of the workpiece, and the sensor moves to scan and quench the workpiece, especially the simultaneous movement of the workpiece and the sensor. This machine can only meet the needs of quenching the outer wall of the pipe fitting, but cannot meet the needs of synchronous quenching of the inner and outer walls of the tapered pipe, and the induction heating process cannot be added to the entire tapered pipe at the same time, which is easy to produce uneven quenching of the pipe wall of the first heating and the later heating, as well as uneven cooling and reheating of the inner and outer walls of the pipe, which leads to reduced quenching quality, low yield, soft spots, and quenching cracks. The quenching machine disclosed in Chinese patent CN104894346A also cannot meet the needs of simultaneous quenching of the inner and outer walls of pipe parts. The entire quenching system and process of the above-mentioned prior art have a low degree of automation, and the quenching liquid cooling and filtration process is simple, which is extremely easy to cause quenching liquid contamination and requires replacement, thereby causing serious quenching pollution problems, which does not meet the production needs of energy conservation and environmental protection. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a tapered tube quenching system and a method of using the same, which solves the problems in the prior art of low automation, poor quenching quality of tapered tubes, and easy contamination of quenching liquid.

[0005] The technical solution of the present invention is achieved as follows: a tapered tube quenching system, including a digital power supply, an electrical control cabinet, a power cooling tower, a water cooler, and a tapered tube, characterized in that: the digital power supply is electrically connected to the electrical control cabinet and the quenching machine, the electrical control cabinet is electrically connected to the quenching machine, the power cooling tower, and the water cooler, the water cooler is connected to the cooling circulating water tank, and the cooling circulating water tank is connected to the quenching machine; the quenching machine includes a frame, a quenching liquid circulation box is provided on one side of the frame, and the quenching liquid circulation box is connected to the cooling circulating water tank, and at least one quenching station is provided on the frame; the quenching station includes a quenching processing box slidably arranged on the frame, the quenching processing box is transmission-connected to the first driving device fixedly arranged on the frame, and an induction quenching is fixedly provided in the quenching processing box The hot coil and the induction heating coil are electrically connected to the electrical control cabinet and the digital power supply. An outer wall quenching assembly is fixedly provided in the quenching processing box, and an inner wall quenching assembly is adjustable on the frame. A second driving device for adjusting the inner wall quenching assembly is provided on the frame, and both the inner wall quenching assembly and the outer wall quenching assembly are connected to the quenching liquid circulation box; a jig base is rotatably provided on the frame below the quenching processing box, and the jig base is transmission-connected with the third driving device under the frame, and a quenching liquid recovery device is provided on the frame corresponding to the jig base, and the quenching liquid recovery device is connected to the quenching liquid circulation box, and the jig base is detachably provided with a jig through the quenching liquid recovery device, and the tapered tube is detachably provided on the jig; the first driving device, the second driving device, and the third driving device are all electrically connected to the electrical control cabinet.

[0006] Preferably, the quenching liquid circulation box includes a first box body for containing quenching liquid, an opening is opened on the upper part of the first box body, the quenching liquid recovery device is connected with the interior of the first box body through the opening, a first water pump is provided at the bottom of the first box body, the water outlet of the first water pump is connected with the inner wall quenching assembly and the outer wall quenching assembly through a pipeline, and the first water pump is electrically connected with the electrical control cabinet; the cooling circulating water tank includes a second box body, a second water pump is provided in the second box body, the second water pump is connected with one end of the condenser arranged in the first box body through a pipeline, and the other end of the condenser is connected with the second box body to form a cooling circuit, the second box body is filled with cooling water, and the water cooler and the second box body are connected with a pipeline to form a refrigeration circuit.

[0007] Preferably, the quenching processing box includes a third box body, a guide shaft is fixedly provided on the upper part of the third box body, and the guide shaft is slidably matched with the frame, the inner wall quenching assembly is slidably provided on the guide shaft, the outer wall quenching assembly and the induction heating coil are fixedly provided in the third box body, and a circular hole corresponding to the tapered tube is provided at the bottom of the third box body, and the third box body is transmission-connected with the first driving device; a guide wheel is provided on the side wall of the third box body, and a guide rail matching the guide wheel is vertically provided on the frame; a supporting frame is fixedly provided on the side wall of the third box body, and a capacitor is provided on the supporting frame, and the capacitor is electrically connected to the induction heating coil, and is also electrically connected to the digital power supply and the electrical control cabinet.

[0008] Preferably, the inner wall quenching assembly includes a mounting plate slidably arranged on the guide shaft, the mounting plate is transmission-connected to the second driving device, a double-layer water spray pipe is fixedly arranged on the mounting plate, and the double-layer water spray pipe is connected to the first water pump through a pipeline.

[0009] Preferably, the double-layer water spray pipe includes an inner tube, an outer tube is fixedly sleeved outside the inner tube, the length of the outer tube is shorter than that of the inner tube, and a gap is left between the outer tube and the inner tube, a water spray hole is provided on the tube wall of the inner tube that extends out of the outer tube, and a water spray hole is provided on the tube wall of the outer tube, the lower end of the outer tube is sealed with the outer side wall of the inner tube, the lower end of the inner tube is closed, the upper end of the inner tube and the upper end of the outer tube are both connected with a flange joint, and the flange joint is connected to the first water pump through a pipeline.

[0010] Preferably, the outer wall quenching assembly includes a pipe fixing frame fixed in the third box body, a plurality of outer wall water spray pipes are provided on the pipe fixing frame, a plurality of nozzles are provided on the outer wall water spray pipes, and the water spraying direction of the nozzles corresponds to the tapered pipe; the upper part of the outer wall water spray pipe passes through the third box body and is connected to a diverter fixed on the third box body, and the diverter is connected to the first water pump through a pipe.

[0011] Preferably, the jig base includes a rotating shaft rotatably arranged at the bottom of the frame, the rotating shaft is transmission-connected to the third driving device, and the rotating shaft passes through the quenching liquid recovery device and is connected to the jig; the jig includes a sleeve seat, the bottom of the sleeve seat is coaxially arranged with the rotating shaft and the two are plug-fitted, and the tapered pipe sleeve is arranged on the sleeve seat.

[0012] Preferably, the quenching liquid recovery device includes a splash-proof tank fixedly mounted on a frame, a rotating shaft passing through the middle of the splash-proof tank and rotatably connected to the splash-proof tank, an outlet of the splash-proof tank being connected to a quenching liquid circulation box, a baffle ring coaxially arranged with the rotating shaft is provided in the middle of the splash-proof tank, and a cover hood cooperating with the baffle ring is fixedly mounted on the rotating shaft.

[0013] Preferably, the first driving device is a hydraulic telescopic rod, a sprocket is provided on the top of the frame, and the movable end of the first driving device is connected to the quenching processing box through a chain passing around the sprocket; the second driving device is a pneumatic push rod; a hydraulic pump and a pneumatic pump respectively connected to the first driving device and the second driving device are fixed on the frame, and the hydraulic pump and the pneumatic pump are electrically connected to the electrical control cabinet; the third driving device is a servo motor; a buffer pad matched with the third box is provided on the frame; the induction heating coil and the tapered tube have a corresponding taper and length.

[0014] A method for using a tapered tube quenching system comprises the following steps:

[0015] S1: Select a jig with a size matching the diameter of the tapered tube and install the tapered tube on the jig, and then install the jig on the jig base.

[0016] S2: The electrical control cabinet controls the first drive device to drive the quenching processing box to move downward until the induction heating coil corresponds to the tapered tube, and the third drive device drives the tapered tube to rotate, and at the same time the induction heating coil is turned on and heats the tapered tube.

[0017] S3: After the heating is completed, the electrical control cabinet controls the induction heating coil to close, and the second drive device drives the inner wall quenching assembly to move down to the inside of the tapered tube. The quenching liquid circulation box sprays the quenching liquid on the tapered tube through the inner wall quenching assembly and the outer wall quenching assembly for quenching; the sprayed quenching liquid is recovered to the quenching liquid circulation box through the quenching liquid recovery device, and the electrical control cabinet controls the water cooler to start to cool the cooling circulating water tank. The cooling circulating water tank works to cool the quenching liquid in the quenching liquid circulation box, and the power supply cooling tower cools the digital power supply, thereby meeting the continuous working conditions of the equipment.

[0018] S4: After quenching is completed, the first and second driving devices are reset to drive the quenching processing box, the inner wall quenching assembly and the outer wall quenching assembly to move up and reset, and the tapered tube is exposed from the quenching processing box. The third driving device stops rotating, the fixture is removed, and then the tapered tube is removed.

[0019] Beneficial effects of the present invention: 1: The system realizes automatic control of the heating process through the electrically connected digital power supply, electrical control cabinet and quenching machine tool, and realizes the automation of the quenching process through the connected water cooler, cooling circulation water tank, quenching machine tool, and the electrical control of the electrical control cabinet. The power cooling tower can automatically cool the digital power supply to maintain the continuous working needs of the system. The entire system enables the heating and quenching processes to be flexibly and accurately controlled, thereby improving the automation degree and quenching efficiency of the system;

[0020] 2: The quenching machine tool of this system can cool and quench the inner and outer walls of the tapered tube at the same time by setting the inner wall quenching component and the outer wall quenching component, which can avoid the problem of poor quenching quality caused by uneven or asynchronous quenching cooling and reverse heat in the prior art. At the same time, the inner wall quenching component and the outer wall quenching component are driven by the first drive device and the second drive device electrically connected to the electrical control cabinet for cooling and quenching. The entire quenching process is automated, which improves the automation level of the equipment.

[0021] 3: The quenching liquid cooling cycle of this system adopts a multi-stage structure setting. The water cooler is controlled by the electrical control cabinet to start. The water cooler cools the water in the cooling circulation water tank. The cooling circulation water tank cools the coolant in the quenching liquid circulation box. The quenching circulation box quenches through the inner wall quenching component and the outer wall quenching component. The quenching liquid recovery device collects the quenched quenching liquid and recycles it to the quenching liquid circulation box, realizing multi-stage cooling and recycling of the quenching liquid, reducing the source conditions for the quenching liquid to be contaminated, thereby achieving the purpose of environmental protection and energy saving.

[0022] 4: This system can quench workpieces of different tapered pipes by replacing jigs of different specifications, which enhances the applicability of the machine tool. The quenching machine tool can be set up in multiple stations, and can perform multiple station alternating processing, saving loading and unloading and cooling water spraying time, and improving production efficiency.

[0023] 5: The quenching method of this system has reasonable procedures, is convenient and efficient, greatly improves the quenching quality and efficiency, has a high degree of automation, reduces the degree of manual participation, is reasonably and reliably designed, and reduces the difficulty of the quenching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the quenching system of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the quenching machine tool of the present invention;

[0027] Figure 3 It is a front view schematic diagram of the quenching machine tool of the present invention;

[0028] Figure 4 This is a schematic diagram of the external structure of the quenching processing box of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal structure of the quenching processing box of the present invention;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the double-layer water spray pipe of the present invention;

[0031] Figure 7 It is a partial structural schematic diagram of the double-layer water spray pipe flange joint of the present invention;

[0032] Figure 8 It is a schematic diagram of the middle structure of the double-layer water spray pipe of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of the quenching liquid recovery device of the present invention;

[0034] Fig.10 It is a schematic diagram of the cross-sectional structure of the quenching liquid recovery device of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1 , 2 , 3, 4, 5, and 10 show that, in Embodiment 1, a tapered tube quenching system comprises a digital power supply 1, an electrical control cabinet 2, a power supply cooling tower 3, a water chiller 4, and a tapered tube 5. The digital power supply 1 is electrically connected to the electrical control cabinet 2 and the quenching machine 6. The electrical control cabinet 2 is electrically connected to the quenching machine 6, the power supply cooling tower 3, and the water chiller 4. The water chiller 4 is connected to the cooling circulating water tank 7, and the cooling circulating water tank 7 is connected to the quenching machine 6. The power supply cooling tower 3 is a common device in the quenching system, which can cool down the digital power supply to maintain its temperature and stable and continuous operation.

[0037] The quenching machine tool 6 includes a frame 8, a quenching liquid circulation box 9 is fixedly provided on one side of the frame 8, and the quenching liquid circulation box 9 is connected to the cooling circulation water tank 7. The quenching liquid circulation box 9 can supply and store quenching liquid, and the cooling circulation water tank 7 can cool the cooling water circulating in the quenching liquid circulation box. There is at least one quenching station on the frame 8, and two quenching stations are preferably provided in this embodiment. Among them, each quenching station includes a quenching processing box 10 vertically slidably provided on the frame 8, and the quenching processing box 10 is transmission-connected to the first driving device 11 fixedly provided on the frame 8. In this embodiment, the first driving device 11 is a hydraulic telescopic rod, and a sprocket 40 is provided on the top of the frame 8. The movable end of the first driving device 11 is connected to the quenching processing box 10 by a chain 41 bypassing the sprocket 40. The first driving device 11 is provided on the side wall of the frame, which can reduce the overall height of the equipment and increase the moving stroke. An induction heating coil 12 is fixedly provided in the quenching processing box 10. The first driving device is electrically connected to the electrical control cabinet and can pull the chain under its control to drive the quenching processing box to move up and down, so that the induction heating coil 12 reaches a position consistent with the height of the tapered tube, and the heating coil is sleeved on the outside of the tapered tube. The induction heating coil 12 is electrically connected to the electrical control cabinet 2 and the digital power supply 1, and the digital power supply can provide high-quality high-frequency alternating current to the induction heating coil 12. The electrical control cabinet can control the digital power supply to turn on the induction heating coil so that it can induction heat the tapered tube. An outer wall quenching assembly 13 is fixedly provided in the quenching processing box 10. The outer wall quenching assembly 13 and the induction heating coil 12 can move with the movement of the quenching processing box. The frame 8 is adjustable with an inner wall quenching assembly 14. In this embodiment, the inner wall quenching assembly can slide vertically relative to the frame 8. The frame 8 is provided with a second driving device 15 for adjusting the inner wall quenching assembly 14. The second driving device 15 is electrically connected to the electrical control cabinet and can drive the inner wall quenching assembly to move up and down to insert or remove from the induction heating coil under its control. The inner wall quenching assembly 14 and the outer wall quenching assembly 13 are both connected to the quenching liquid circulation box 9. The quenching liquid processing box works under the control of the electrical control cabinet to supply quenching liquid to the inner wall quenching assembly and the outer wall quenching assembly for quenching, which can avoid the problem of poor quenching quality caused by uneven or asynchronous quenching cooling and reverse heat of spraying quenching liquid inside and outside the tapered tube in the prior art. In this embodiment, the induction heating coil 12 and the tapered tube 5 are configured in a contoured manner, that is, the two have the same taper and vertical length, so that when the induction heating coil and the tapered tube are heated correspondingly, the entire tapered tube can be heated at the same time. When the tapered tube is long, multiple strands of induction heating coils are coaxially and alternately arranged to meet the heating length requirements.

[0038] A jig base 16 is rotatably provided on the frame 8 below the quenching processing box 10. The jig base 16 is transmission-connected to the third drive device 17 provided under the frame 8. The third drive device 17 is electrically connected to the electrical control cabinet and can drive the jig base to rotate under its control. A quenching liquid recovery device 18 is provided on the frame 8 corresponding to the jig base 16. The quenching liquid recovery device 18 is connected to the quenching liquid circulation box 9. The jig base 16 is detachably provided with a jig 19 through the quenching liquid recovery device 18. The taper tube 5 is detachably provided on the jig 19. In this embodiment, the taper tube is plugged on the jig, and the jig is plugged on the jig base. The plug-in method can improve the efficiency of loading and unloading. When replacing the taper tube to be processed, the jig is removed together with the quenched taper tube and replaced as a whole, which can reduce the problem of the difficulty of manual operation in the prior art. The system can quench taper tube workpieces of different specifications by replacing jigs of different specifications, thereby improving the applicability of the machine tool. The tapered tube is located below the induction heating coil, and the induction heating coil stops and performs induction heating when it moves down to the outside of the tapered tube. The quenching liquid cooling cycle of this system adopts a multi-stage structure setting, and the water cooler is turned on by the electrical control cabinet. The water cooler cools the water in the cooling circulation water tank, and the cooling circulation water tank cools the coolant in the quenching liquid circulation box. The quenching circulation box quenches through the inner wall quenching component and the outer wall quenching component. The quenching liquid recovery device collects the quenched quenching liquid and recycles it to the quenching liquid circulation box, realizing multi-stage cooling and recycling of the quenching liquid, reducing the source conditions of quenching liquid contamination, and thus achieving the purpose of environmental protection and energy saving.

[0039] Embodiment 2, on the basis of embodiment 1, the quenching liquid circulation box 9 includes a first box body 20, and the first box body 20 is provided with a quenching liquid inside. The quenching liquid can be selected from water, inorganic salt solution, mineral oil and other media, and inorganic salt solution is preferred in this embodiment. An opening is opened at the top of the first box body 20, and the quenching liquid recovery device 18 is connected to the inside of the first box body 20 through the opening. A first water pump is provided at the bottom of the first box body 20, and the water outlet of the first water pump is connected to the inner wall quenching component 14 and the outer wall quenching component 13 through a pipeline, and the first water pump is electrically connected to the electrical control cabinet 2. When quenching is required, after the inner wall quenching component 14 and the outer wall quenching component 13 move to correspond to the tapered tube, the electrical control cabinet controls the first water pump to work, and the first water pump extracts the quenching liquid in the first box body and sprays it from the inner wall quenching component 14 and the outer wall quenching component 13, and sprays the quenching liquid on the inside and outside of the tapered tube at the same time.

[0040] The cooling circulation water tank 7 includes a second box body, a second water pump is arranged in the second box body, the second water pump is connected to one end of the condenser arranged in the first box body 20 through a pipeline, and the other end of the condenser is connected to the second box body to form a cooling circuit. The second box body is filled with cooling water, and the water chiller 4 and the second box body are connected by a pipeline to form a refrigeration circuit. The condenser tube is arranged around the inner wall of the second box body, and the cooling water of the condenser tube can absorb the heat of the coolant in the first box body and bring it back to the second box body. The water chiller can cool the cooling water in the second box body to achieve the final cooling, thereby achieving the purpose of multi-stage heat dissipation and reducing the probability of quenching liquid being contaminated.

[0041] Embodiment 3, on the basis of embodiment 2, the quenching processing box 10 includes a third box body 21, a guide shaft 22 is fixedly provided on the upper part of the third box body 21, and the guide shaft 22 is slidably matched with the frame 8. In this embodiment, each third box body is fixedly connected to one end of the two guide shafts, and a sleeve that is slidably matched with the guide shaft is fixedly provided on the frame, so that the third box body can slide vertically. The inner wall quenching assembly 14 is slidably arranged on the guide shaft 22, and the outer wall quenching assembly 13 and the induction heating coil 12 are fixedly arranged in the third box body 21. The bottom of the third box body 21 is provided with a circular hole corresponding to the tapered tube 5, and the circular hole can meet the insertion of the third box body into the interior of the third box body when the third box body descends and corresponds to the induction heating coil. The third box body 21 is connected to the first driving device 11 through a chain 41. The side wall of the third box body 21 is provided with a guide wheel 23, and the frame 8 is vertically provided with a guide rail 24 that matches the guide wheel 23, so as to meet the third box body moving up and down along the guide rail 24 driven by the first driving device. A support bracket 25 is fixedly provided on the side wall of the third box body 21 . A capacitor 26 is provided on the support bracket 25 . The capacitor 26 is electrically connected to the induction heating coil 12 , and is also electrically connected to the digital power supply 1 and the electrical control cabinet 2 .

[0042] Further, the inner wall quenching assembly 14 includes a mounting plate 27 slidably arranged on the guide shaft 22, and the mounting plate 27 is connected to the second drive device 15 in a transmission connection, wherein the second drive transmission device 15 is vertically fixed on the top of the frame, and can drive the mounting plate to move up and down along the guide shaft as the second drive device is extended or shortened. In this embodiment, the second drive device 15 is a pneumatic push rod, and a hydraulic pump and a pneumatic pump connected to the first drive device 11 and the second drive device 15 are fixed on the frame 8, and the hydraulic pump and the pneumatic pump are both electrically connected to the electrical control cabinet 2, and the electrical control cabinet controls the opening of the hydraulic pump to control the extension or contraction of the first drive device 11, and the electrical control cabinet controls the operation of the pneumatic pump to control the extension or shortening of the second drive device. In this embodiment, the first drive device is a hydraulic pump, which can maintain a stronger push-pull force, so that the power transmission is more stable, so as to meet the driving and moving function of the entire quenching processing box, and the pneumatic push rod can make the moving action faster and improve the processing efficiency. A double-layer water spray pipe 28 is fixedly provided on the mounting plate 27 , and the double-layer water spray pipe 28 is connected to the first water pump through a pipeline.

[0043] Among them, Figure 6 , 7 As shown in Figure 8, the double-layer water spray pipe 28 includes an inner tube 29, an outer tube 30 is fixedly sleeved outside the inner tube 29, the length of the outer tube 30 is shorter than the inner tube 29, and a gap is left between the outer tube 30 and the inner tube 29, a water spray hole is provided on the wall of the inner tube 29 that extends out of the outer tube 30, and a water spray hole is provided on the wall of the outer tube 30, the lower end of the outer tube 30 is sealed with the outer wall of the inner tube 29, the lower end of the inner tube 29 is closed, and the upper ends of the inner tube 29 and the outer tube 30 are both connected with flange joints 31, and the flange joints 31 are connected to the first water pump through a pipeline. During quenching, the electrical control cabinet controls the first water pump to start, and the first water pump draws quenching liquid through the pipeline and two flange joints into the inner tube and the gap between the inner tube and the outer tube, and sprays it out through the water spray holes on the inner tube and the outer tube. In this embodiment, a nozzle can be optionally set at the water spray hole to make the quenching liquid spray more evenly. At the same time, the solution of spraying water on the upper and lower parts simultaneously with the inner and outer pipes avoids the uneven spraying phenomenon caused by the high water pressure in the lower part and the low pressure in the lower part when a single water spray pipe is set up, and further avoids the problem of poor quenching quality caused by uneven or asynchronous quenching cooling and reverse heat.

[0044] Embodiment 4, on the basis of embodiment 3, the outer wall quenching assembly 13 includes a pipe fixing frame 32 fixedly arranged in the third box 21, and a plurality of outer wall spray pipes 33 are arranged on the pipe fixing frame 32, and a plurality of nozzles are arranged on the outer wall spray pipes 33, and the spraying direction of the nozzles corresponds to the tapered tube 5. In this embodiment, there are four outer wall spray pipes, which are respectively arranged at the four corners inside the third box, and the nozzles all point to the center of the third box. Preferably, the nozzles are arranged at the gap of the induction heating coil. The upper parts of the four outer wall spray pipes 33 of this embodiment all pass through the third box 21 and are connected to the diverter 34 fixedly arranged on the third box 21 through pipes, and the diverter 34 is connected to the first water pump through pipes. When quenching, the electrical control cabinet controls the operation of the first water pump, and the first water pump supplies quenching liquid to the outer wall quenching assembly and the inner wall quenching assembly at the same time. In the outer wall quenching assembly, the quenching liquid enters the four outer wall spray pipes through the diverter, and is sprayed out through the nozzles and sprayed on the induction heating coil and the tapered tube. The frame 8 is provided with a buffer pad that cooperates with the third box body 21 to play a buffering role in movement.

[0045] like Fig. 9 , 10As shown, in Example 5, on the basis of Example 4, the fixture base 16 includes a rotating shaft 35 rotatably arranged at the bottom of the frame 8, and the rotating shaft 35 is connected to the third drive device 17 in a transmission manner. In this embodiment, the third drive device 17 is a servo motor. Optionally, the rotating shaft and the third drive device are connected by a belt transmission pair or a gear pair. The rotating shaft 35 passes through the quenching liquid recovery device 18 and is connected to the fixture 19. The fixture 19 includes a sleeve seat 36, the bottom of the sleeve seat 36 is coaxially arranged with the rotating shaft 35 and the two are plugged together, and the tapered tube 5 is sleeved on the sleeve seat 36. In this embodiment, the sleeve seat has a plurality of different sizes and specifications, and the bottom size of the sleeve seats of all specifications is consistent, which is convenient for plugging with the rotating shaft. The upper diameter and length of the sleeve seat are different to meet the plug-in needs of tapered tubes of different lengths and diameters, so as to improve the overall applicability of the system.

[0046] Further, the quenching liquid recovery device 18 includes a splash-proof groove 37 fixedly mounted on the frame 8, a rotating shaft 35 passing through the middle of the splash-proof groove 37 and being rotatably connected to the splash-proof groove 37, an outlet of the splash-proof groove 37 being connected to the quenching liquid circulation box 9, a baffle ring 38 coaxially arranged with the rotating shaft 35 being provided in the middle of the splash-proof groove 37, and a cover 39 matched with the baffle ring 38 being fixedly mounted on the rotating shaft 35. In this embodiment, the baffle ring is welded and sealed to the splash-proof groove, the cover is a cylindrical cover structure with an opening at the bottom, the middle of which is fixedly connected to the rotating shaft and a sealing gasket is provided between the two, and the cover can rotate with the rotating shaft to prevent the sprayed quenching liquid from entering the interior of the baffle ring.

[0047] Embodiment 6, the method for using the tapered tube quenching system as described in the above embodiment comprises the following steps:

[0048] S1: Select a jig 19 with a size matching the diameter of the tapered tube 5 and install the tapered tube 5 on the jig 19, and then install the jig 19 on the jig base 16.

[0049] S2: The electrical control cabinet 2 controls the first driving device 11 to drive the quenching processing box 10 to move downward until the induction heating coil 12 corresponds to the tapered tube 5, so that the induction heating coil can heat the entire tapered tube. The third driving device 17 drives the tapered tube 5 to rotate, and at the same time the induction heating coil 12 is turned on and heats the tapered tube 5.

[0050] S3: After the heating is completed, the electrical control cabinet 2 controls the induction heating coil 12 to close, and the second driving device 15 drives the inner wall quenching component 14 to move down to the inside of the tapered tube 5. The quenching liquid circulation box 9 sprays the quenching liquid on the tapered tube 5 through the inner wall quenching component 14 and the outer wall quenching component 13 to perform the quenching process; the sprayed quenching liquid is recovered to the quenching liquid circulation box 9 through the quenching liquid recovery device 18, and the electrical control cabinet 2 controls the water cooler 4 to start to cool the cooling circulating water tank 7. The cooling circulating water tank 7 works to cool the quenching liquid in the quenching liquid circulation box 9, and the power cooling tower 3 cools the digital power supply 1, thereby meeting the continuous working conditions of the equipment.

[0051] S4: After quenching is completed, the first and second drive devices 15 are reset to drive the quenching processing box 10, the inner wall quenching assembly 14 and the outer wall quenching assembly 13 to move up and reset, and the tapered tube 5 is exposed from the quenching processing box 10. The third drive device 17 stops rotating, the fixture 19 is removed, and then the tapered tube 5 is removed to complete the quenching process.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tapered tube quenching system, comprising a digital power supply (1), an electrical control cabinet (2), a power supply cooling tower (3), a water cooler (4), and a tapered tube (5), characterized in that: The digital power supply (1) is electrically connected to the electrical control cabinet (2) and the quenching machine (6); the electrical control cabinet (2) is electrically connected to the quenching machine (6), the power cooling tower (3), and the water cooler (4); the water cooler (4) is connected to the cooling circulating water tank (7); and the cooling circulating water tank (7) is connected to the quenching machine (6); The quenching machine tool (6) comprises a frame (8), a quenching liquid circulation box (9) is provided on one side of the frame (8), and the quenching liquid circulation box (9) is connected to a cooling circulating water tank (7), and at least one quenching station is provided on the frame (8); The quenching station comprises a quenching processing box (10) slidably mounted on a frame (8), the quenching processing box (10) being transmission-connected to a first driving device (11) fixedly mounted on the frame (8), an induction heating coil (12) being fixedly mounted in the quenching processing box (10), the induction heating coil (12) being electrically connected to an electrical control cabinet (2) and a digital power supply (1), an outer wall quenching assembly (13) being fixedly mounted in the quenching processing box (10), an inner wall quenching assembly (14) being adjustably mounted on the frame (8), a second driving device (15) for adjusting the inner wall quenching assembly (14) being mounted on the frame (8), and both the inner wall quenching assembly (14) and the outer wall quenching assembly (13) being connected to a quenching liquid circulation box (9); A jig base (16) is rotatably provided on a frame (8) below the quenching processing box (10); the jig base (16) is drivingly connected to a third driving device (17) provided under the frame (8); a quenching liquid recovery device (18) is provided on the frame (8) corresponding to the jig base (16); the quenching liquid recovery device (18) is connected to the quenching liquid circulation box (9); the jig base (16) passes through the quenching liquid recovery device (18) and is detachably provided with a jig (19); and the tapered tube (5) is detachably provided on the jig (19); The first drive device (11), the second drive device (15), and the third drive device (17) are all electrically connected to the electrical control cabinet (2); The quenching processing box (10) comprises a third box body (21), a guide shaft (22) is fixedly provided on the upper part of the third box body (21), and the guide shaft (22) is slidably matched with the frame (8), an inner wall quenching assembly (14) is slidably arranged on the guide shaft (22), an outer wall quenching assembly (13) and an induction heating coil (12) are fixedly arranged in the third box body (21), a circular hole corresponding to the tapered tube (5) is provided at the bottom of the third box body (21), and the third box body (21) is drivingly connected to the first driving device (11); a guide wheel (23) is provided on the side wall of the third box body (21), and a guide rail (24) matched with the guide wheel (23) is vertically provided on the frame (8); a support frame (25) is fixedly provided on the side wall of the third box body (21), and a capacitor (26) is provided on the support frame (25), and the capacitor (26) is electrically connected to the induction heating coil (12) and is also electrically connected to the digital power supply (1) and the electrical control cabinet (2); The inner wall quenching assembly (14) comprises a mounting plate (27) slidably mounted on the guide shaft (22), the mounting plate (27) being drivingly connected to the second driving device (15), a double-layer water spray pipe (28) being fixedly mounted on the mounting plate (27), and the double-layer water spray pipe (28) being connected to the first water pump via a pipeline; The double-layer water spray pipe (28) comprises an inner pipe (29), an outer pipe (30) is fixedly sleeved outside the inner pipe (29), the outer pipe (30) is shorter than the inner pipe (29), and a gap is left between the outer pipe (30) and the inner pipe (29), a water spray hole is provided on the pipe wall of the inner pipe (29) that extends out of the outer pipe (30), and a water spray hole is provided on the pipe wall of the outer pipe (30), the lower end of the outer pipe (30) is sealed with the outer wall of the inner pipe (29), the lower end of the inner pipe (29) is closed, and the upper ends of the inner pipe (29) and the outer pipe (30) are both connected with flange joints (31), and the flange joints (31) are connected to a first water pump through a pipeline.

2. The tapered tube quenching system according to claim 1, characterized in that: The quenching liquid circulation box (9) comprises a first box body (20) for containing quenching liquid, the first box body (20) has an opening at the top, the quenching liquid recovery device (18) is connected to the inside of the first box body (20) through the opening, a first water pump is provided at the bottom of the first box body (20), the water outlet of the first water pump is connected to the inner wall quenching component (14) and the outer wall quenching component (13) through a pipeline, and the first water pump is electrically connected to the electrical control cabinet (2); The cooling circulation water tank (7) comprises a second tank body, a second water pump is arranged in the second tank body, the second water pump is connected to one end of a condenser pipe arranged in the first tank body (20) through a pipeline, and the other end of the condenser pipe is connected to the second tank body to form a cooling circuit, the second tank body is filled with cooling water, and the water cooler (4) is connected to the second tank body through a pipeline to form a refrigeration circuit.

3. The tapered tube quenching system according to claim 2, characterized in that: The outer wall quenching assembly (13) comprises a pipe fixing frame (32) fixedly arranged in the third box (21); a plurality of outer wall spray pipes (33) are arranged on the pipe fixing frame (32); a plurality of nozzles are arranged on the outer wall spray pipes (33); and the spraying directions of the nozzles correspond to the tapered pipe (5); the upper part of the outer wall spray pipes (33) passes through the third box (21) and is connected to a flow divider (34) fixedly arranged on the third box (21); and the flow divider (34) is connected to the first water pump through a pipe.

4. The tapered tube quenching system according to any one of claims 1 to 3, characterized in that: The jig base (16) comprises a rotating shaft (35) rotatably arranged at the bottom of the frame (8), the rotating shaft (35) being transmission-connected to the third driving device (17), the rotating shaft (35) passing through the quenching liquid recovery device (18) and being connected to the jig (19); the jig (19) comprises a sleeve seat (36), the bottom of the sleeve seat (36) being coaxially arranged with the rotating shaft (35) and the two being plug-fitted, and the tapered tube (5) being sleeved on the sleeve seat (36).

5. The tapered tube quenching system according to claim 4, characterized in that: The quenching liquid recovery device (18) comprises a splash-proof groove (37) fixedly mounted on a frame (8); a rotating shaft (35) passing through the middle of the splash-proof groove (37) and rotatably connected to the splash-proof groove (37); an outlet of the splash-proof groove (37) is connected to a quenching liquid circulation box (9); a retaining ring (38) coaxially arranged with the rotating shaft (35) is provided in the middle of the splash-proof groove (37); and a covering cover (39) matched with the retaining ring (38) is fixedly mounted on the rotating shaft (35).

6. The tapered tube quenching system according to claim 5, characterized in that: The first drive device (11) is a hydraulic telescopic rod, a sprocket (40) is provided on the top of the frame (8), and the movable end of the first drive device (11) is connected to the quenching processing box (10) via a chain (41) bypassing the sprocket (40); the second drive device (15) is a pneumatic push rod; a hydraulic pump and a pneumatic pump respectively connected to the first drive device (11) and the second drive device (15) are fixed on the frame (8), and the hydraulic pump and the pneumatic pump are electrically connected to the electrical control cabinet (2); the third drive device (17) is a servo motor; a buffer pad matched with the third box (21) is provided on the frame (8); the induction heating coil (12) and the tapered tube (5) have a corresponding taper and length.

7. A method for using the tapered tube quenching system according to any one of claims 1 to 6, comprising the following steps: S1: selecting a jig (19) having a size matching the diameter of the tapered tube (5) and mounting the tapered tube (5) on the jig (19), and then mounting the jig (19) on the jig base (16); S2: the electrical control cabinet (2) controls the first driving device (11) to drive the quenching processing box (10) to move downward until the induction heating coil (12) corresponds to the tapered tube (5), and the third driving device (17) drives the tapered tube (5) to rotate, and at the same time the induction heating coil (12) is turned on to heat the tapered tube (5); S3: After the heating is completed, the electrical control cabinet (2) controls the induction heating coil (12) to be turned off, and the second driving device (15) drives the inner wall quenching assembly (14) to move downward to the inside of the tapered tube (5). The quenching liquid circulation box (9) sprays the quenching liquid on the tapered tube (5) through the inner wall quenching assembly (14) and the outer wall quenching assembly (13) to quench the tapered tube (5); the sprayed quenching liquid is recovered to the quenching liquid circulation box (9) through the quenching liquid recovery device (18), and the electrical control cabinet (2) controls the water chiller (4) to start cooling the cooling circulating water tank (7). The cooling circulating water tank (7) works to cool the quenching liquid in the quenching liquid circulation box (9), and the power supply cooling tower (3) cools the digital power supply (1), thereby meeting the continuous working conditions of the equipment; S4: After quenching is completed, the first and second driving devices (15) are reset to drive the quenching processing box (10), the inner wall quenching assembly (14) and the outer wall quenching assembly (13) to move upward and reset, and the tapered tube (5) is exposed from the quenching processing box (10). The third driving device (17) stops rotating, the jig (19) is removed, and then the tapered tube (5) is removed.

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