Quenching device for medium-frequency hardening and tempering production line

Abstract

The utility model relates to a quenching device for a medium-frequency hardening and tempering production line, which comprises a box-shaped closed shell, a water ring suspension adjusting device and a quenching water ring, the box-shaped closed shell comprises a box body frame, spandrel girders respectively fixed at two ends of the top of the box body frame, and a stainless steel shell closed by a stainless steel plate; the stainless steel shell on one side of the aisle is a detachable stainless steel waterproof protective plate, an observation window is reserved in the upper portion of the middle of the stainless steel shell, high-temperature-resistant glass is arranged on the observation window, the metal hose is communicated with a quenching water ring water inlet pipe in the box through a reserved hole in the top of the box, and feeding and discharging holes are reserved in the two ends of the box-shaped closed shell. The box-shaped closed shell is arranged above the quenching water tank, quenching water directly falls into the quenching water tank, aging and damage are not prone to occurring in the using process, the actual quenching effect is easy to observe in the production process, the height position of the quenching water ring can be easily adjusted in the quenching process, adjustment can be conducted without furnace shutdown and water supply cut-off, and continuous production is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of medium frequency continuous quenching and tempering heat treatment, and relates to a quenching device for a medium frequency quenching and tempering production line used for quenching and tempering heat treatment. Background Art

[0002] Medium frequency heat treatment equipment is suitable for heat treatment of slender tubes and cylinders. During the medium frequency heat treatment operation, it is a production line operation. When quenching, the workpiece must be tightly connected to the other and move forward. It passes through a quenching cooling device set at the outlet of the furnace. For details, see Figure 10 , a schematic structural diagram of the utility model.

[0003] However, in the existing technology, the medium frequency quenching water ring adopts a cantilever suspension device design, and the water rings are fully enclosed, which has a good effect in preventing water splashing. However, this structure has two problems: (1) Since the water rings are fully enclosed, there is no reserved observation port, and the actual quenching effect cannot be observed during the production process, which is not conducive to quality control; (2) The quenching water ring can only be adjusted individually, and cannot be adjusted during the heat treatment process. If it is found that the height of the water ring is not appropriate during production, it is very difficult to adjust, and the furnace and water must be stopped for adjustment, interrupting continuous production; (3) The water inlet pipe of the quenching water ring is connected with a rubber hose, which is affected by the high-temperature workpiece during use and is prone to aging and damage. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a quenching device for a medium frequency quenching and tempering production line, which consists of a box-type closed shell, a water ring suspension adjustment device and a quenching water ring.

[0005] The technical solution of the utility model is achieved as follows: a quenching device for a medium frequency quenching and tempering production line, comprising a box-shaped enclosed housing, a water ring suspension adjustment device installed in the box-shaped enclosed housing, and a quenching water ring installed on the water ring suspension adjustment device. The box-shaped enclosed housing includes a box frame made of stainless steel square tubes, a load-bearing beam fixed at each end of the top of the box frame for mounting the water ring suspension adjustment device, and a stainless steel housing enclosed with stainless steel plates except for the bottom. The stainless steel housing on the side near the walkway contains three removable stainless steel waterproof protective plates for installing, adjusting, using and maintaining the quenching water ring. An observation window is provided in the upper middle portion of the stainless steel waterproof protective plate, and the observation window is installed with high-temperature resistant glass to prevent quenching water from splashing out. A box top reserved hole is provided at the top of the box-shaped enclosed housing, through which a metal hose is connected to the water inlet pipe of the quenching water ring in the box. Inlet and outlet holes are provided at both ends of the box-shaped enclosed housing. The box-shaped enclosed housing is directly mounted above the quenching water tank, and the quenching water directly falls into the quenching water tank.

[0006] The water ring suspension adjustment device includes a crossbeam main beam suspended inside a box-type closed shell, two crossbeam suspension devices arranged at both ends of the top of the crossbeam main beam and symmetrically installed, a crossbeam water ring suspension plate fixed in the middle of the bottom of the crossbeam main beam, a water ring installation groove milled in the middle of the crossbeam water ring suspension plate, and a water ring suspension arm installed in the water ring installation groove and connected to the quenching water ring. The water ring suspension arm is a concave iron block, and two symmetrical water ring suspension device installation holes are drilled in the upper part of its protruding arms. The water ring suspension arm is connected to the crossbeam water ring suspension plate after passing through the water ring suspension device installation holes and the water ring installation groove by bolts; a circular hole is drilled in the middle part of the load-bearing beam, a nut is welded on the upper part of the circular hole, a screw with a turntable is installed on the nut, round steel is arranged under the screw rod, and a baffle is arranged under the round steel. A crossbeam suspension device installation hole is drilled in the middle part of the top of the crossbeam suspension device, and the screw rod passes through the round steel and the baffle in the above-mentioned crossbeam suspension device installation hole to achieve connection with the crossbeam suspension device.

[0007] The quenching water rings are all suspended on a suspended crossbeam main beam inside the box. The crossbeam main beam is made of 60mmx60mm stainless steel square tube with a wall thickness of 5mm and a length of 3000mm. Two crossbeam hanging devices are symmetrically installed on the top of the crossbeam main beam 200mm away from both ends. The crossbeam hanging devices are connected to the box frame through screw rods, round steel, and baffles. The crossbeam main beam is connected to the quenching water ring through the crossbeam water ring hanging plate, water ring installation groove, and water ring suspension arm at the bottom.

[0008] The box-type closed shell is 3500mm long, 800mm wide and 1000mm high. The box frame is made of 60mmx60mm stainless steel square tubes with a wall thickness of 5mm. A load-bearing beam for installing the water ring suspension adjustment device is added at both ends of the top of the box frame 400mm away from the end. The box frame is closed with a 1mm thick stainless steel plate. The box is equipped with three detachable stainless steel waterproof guard plates with a width of 1100mm and a height of 900mm on the side close to the aisle. The observation window opened on the stainless steel waterproof guard plate has a size of 500mmx300mm.

[0009] The crossbeam water ring hanging plate is a steel plate with a length of 2800mm, a width of 60mm and a thickness of 20mm, and a water ring installation groove with a width of 16mm and a length of 2600mm is milled in the middle of the steel plate.

[0010] The purpose of the invention of this utility model is to optimize and improve the original quenching cooling device, so the technical solution of the utility model produces the following positive effects:

[0011] (1) The water inlet pipe of the quenching water ring adopts a metal hose that is resistant to high temperature and is connected instead of a rubber hose. It is not easy to age and be damaged during use.

[0012] (2) A 500mmx300mm observation window is left in the upper middle part of the stainless steel waterproof guard plate. It is easy to observe the actual quenching effect during the production process, and the process can be adjusted according to the actual situation.

[0013] (3) If the water ring height is found to be inappropriate during production, the water ring suspension adjustment device can easily adjust the height position of the quenching water ring during the quenching process without stopping the furnace or water, thus ensuring continuous production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of the appearance of the quenching cooling device of the present invention.

[0015] Figure 2 This is a three-dimensional diagram of the box frame of the quenching and cooling device of the present invention.

[0016] Figure 3 This is the main view of the water circle structure of the utility model.

[0017] Figure 4 This is a cross-sectional view of the water ring structure of the present invention taken along line A.

[0018] Figure 5 This is a diagram of the connecting rod of the water ring suspension adjustment device of the utility model.

[0019] Figure 6 This is the front view of the crossbeam of the water ring suspension adjustment device of the utility model.

[0020] Figure 7 This is a side view of the crossbeam of the water ring suspension adjustment device of the utility model.

[0021] Figure 8 This is a structural diagram of the water ring suspension adjustment device of the utility model.

[0022] Figure 9 This is a side view of the water ring suspension adjustment device structure of the utility model.

[0023] Figure 10 This is a schematic diagram of the working structure of the utility model.

[0024] 1. Box frame; 2. Load-bearing beam; 3. Metal hose; 4. Turntable; 5. Screw; 6. Nut; 7. Reserved hole on the top of the box; 8. Stainless steel waterproof protective plate; 9. Observation window; 10. Inlet and outlet holes; 11. Quenching water ring; 12. Water inlet pipe; 13. Water ring suspension arm; 14. Water ring suspension device mounting hole; 15. Water ring inner ring; 16. Water spray eye; 17. Round steel; 18. Baffle; 19. Main beam; 20. Beam suspension device; 21. Beam suspension device mounting hole; 22. Beam water ring suspension plate; 23. Water ring mounting groove; 24. Quenching water pool; 25. Roller; 26. Medium frequency furnace frame; 27. Insulation cover; 28. Induction coil. DETAILED DESCRIPTION

[0025] like Figure 1 、 2 , 3, 4, 5, 6, 7, 8, 9, 10, a quenching device for a medium frequency quenching and tempering production line, comprising a box-type closed shell, a water ring suspension adjustment device installed in the box-type closed shell, and a quenching water ring 11 installed on the water ring suspension adjustment device. The box-type closed shell comprises a box frame 1 made of stainless steel square tubes, a load-bearing beam 2 for installing the water ring suspension adjustment device fixed at each end of the top of the box frame 1, and a stainless steel shell sealed with stainless steel plates except for the bottom, wherein the stainless steel shell on the side close to the aisle is for The three detachable stainless steel waterproof guard plates 8 of the quenching water ring 11 are installed, adjusted, used and maintained. An observation window 9 is left in the upper middle part of the stainless steel waterproof guard plate 8. The observation window 9 is installed with high-temperature resistant glass to prevent the quenching water from splashing out. A box top reserved hole 7 is opened on the top of the box-type closed shell. The metal hose 3 is connected to the water inlet pipe 12 of the quenching water ring 11 in the box through the box top reserved hole 7. Inlet and outlet holes 10 are left at both ends of the box-type closed shell. The box-type closed shell is directly installed above the quenching water pool 24, and the quenching water falls directly into the quenching water pool 24.

[0026] like Figure 10As shown, the medium frequency heat treatment equipment is suitable for heat treatment of slender tubes and cylinders. During the medium frequency heat treatment operation, it is an assembly line operation. During quenching, the workpiece must be tightly connected to the other and run forward along the roller 25. It passes through the insulation cover 27 and the induction coil 28 to enter the quenching cooling device arranged at the outlet of the furnace body for quenching and cooling. The device is fixed on the medium frequency furnace rack 26 at the outlet of the furnace body and is located directly above the quenching water pool 24; during the production process, the actual quenching effect can be observed through the observation window 9, and the process can be adjusted according to actual conditions; the quenching water ring 11 is connected to the crossbeam water ring hanging plate 22 by bolts, and can be moved back and forth in the water ring mounting groove 23 to adjust the longitudinal position, and the turntable 4 can be rotated to achieve the upper and lower position adjustment of the quenching water ring 11 by changing the position of the screw rod 5; it is connected to the quenching water ring water inlet pipe 12 in the box through the reserved hole 7 on the top of the box through the metal hose 3. During the medium frequency heat treatment operation, the workpiece is heated in the induction coil 28, and the heated workpiece is connected to the other by the roller 25 and moves forward, passing through the quenching device set at the exit of the furnace at a uniform speed for quenching treatment.

[0027] The box-type closed shell is 3500mm long, 800mm wide and 1000mm high. The box frame 1 is made of 60mmx60mm stainless steel square tube with a wall thickness of 5mm. A load-bearing beam 2 is added at each end of the top of the box frame 1 about 400mm away from the end to install the water ring suspension adjustment device. Except for the bottom, the shell is closed with a 1mm thick stainless steel plate. Three detachable stainless steel waterproof guard plates 8 with a width of 1100mm and a height of 900mm are installed on the side of the box near the aisle. The water ring 11 is installed, adjusted, used and maintained. A 500mmx300mm observation window 9 is left in the upper middle part of the stainless steel waterproof guard plate 8. The observation window is equipped with high-temperature resistant glass to prevent quenching water from splashing out. The regulating valve of the quenching water ring is installed on the other side of the box. It is connected to the quenching water ring inlet pipe 12 in the box through the metal hose 3 and the reserved hole 7 on the top of the box. There are inlet and outlet holes 10 at both ends of the box. The box is directly installed above the quenching pool 24, and the quenching water falls directly into the quenching pool 24. For details, see Figure 1 、 2 、10.

[0028] The quenching water ring 11 is entirely suspended on a suspended crossbeam main beam 19 inside the box. The crossbeam main beam 19 is made of a 60mmx60mm stainless steel square tube with a wall thickness of 5mm and a length of 3000mm. Two crossbeam suspension devices 20 are symmetrically installed on the top of the crossbeam main beam 19 at a distance of 200mm from both ends. The crossbeam suspension device 20 is connected to the box frame 1 through a screw rod 5, a round steel 17, and a baffle 18. The crossbeam main beam 19 is connected to the quenching water ring 11 through the crossbeam water ring hanging plate 22, the water ring mounting groove 23, and the water ring suspension arm 13 at the bottom.

[0029] The water ring suspension adjustment device includes a crossbeam main beam 19 suspended inside the box-type closed shell, two crossbeam suspension devices 20 arranged at both ends of the top of the crossbeam main beam 19 and symmetrically installed, a crossbeam water ring suspension plate 22 fixed in the middle of the bottom of the crossbeam main beam 19, a water ring installation groove 23 milled in the middle of the crossbeam water ring suspension plate 22, and a water ring suspension arm 13 installed in the water ring installation groove 23 and connected to the quenching water ring 11. The water ring suspension arm 13 is a concave iron block, and two symmetrical water ring suspension device installation holes 14 are drilled on the upper part of the protruding two arms. The water ring suspension arm 13 is connected to the quenching water ring 11 through the water ring suspension arm 13. A bolt is passed through the water ring suspension device mounting hole 14 and the water ring mounting groove 23 and then connected to the beam water ring suspension plate 22; a round hole is drilled in the middle part of the load-bearing beam 2, a nut 6 is welded on the upper part of the round hole, a screw rod 5 with a turntable 4 is installed on the nut 6, a round steel 17 is arranged under the screw rod 5, and a baffle 18 is arranged under the round steel 17, and a beam suspension device mounting hole 21 is drilled in the middle part of the top of the beam suspension device 20, and the screw rod 5 is passed through the round steel 17 and the baffle 18 in the above-mentioned beam suspension device mounting hole 21 to achieve connection with the beam suspension device 20.

[0030] The quenching water ring 11 is entirely suspended on a suspended beam inside the box. The main beam 19 is made of a 60mmx60mm stainless steel square tube with a wall thickness of 5mm and a length of 3000mm. Two beam suspension devices 20 are symmetrically installed on the top of the main beam 19 at a distance of about 200mm from both ends. They are connected to the box frame 1 with a connecting rod. The bottom of the main beam 19 is a beam water ring suspension plate 22, which is connected to the quenching water ring 11. The water ring suspension adjustment device connecting rod is connected to the box frame 1 through the screw rod 5, the heavy beam 2, and the nut 6, and can adjust the vertical height of the cross beam main beam 19, so that the quenching water ring 11 can be flexibly adjusted up and down in the vertical direction. The water ring suspension adjustment device connecting rod consists of four parts. The top is a Ø250mm turntable 4, and the bottom of the turntable 4 is a Ø25mm screw rod 5. The screw rod 5 is about 400mm long. The bottom of the screw rod 5 is a Ø20mm round steel 17. The round steel 17 is about 200mm long. The bottom of the round steel 17 is a Ø40mm baffle 18. The baffle 18 is about 10mm thick. For details, see Figure 5 、 6 , 7, 8, 9. The quenching water ring 11 is made of stainless steel seamless steel pipe to form the water spraying surface of the inner ring 15 of the quenching water ring. In order to ensure that the quenching water spraying angle is 45 degrees to the horizontal, the water spraying hole 16 is drilled into an oblique hole at 45 degrees to the horizontal.

[0031] Quenching water ring: (1) The quenching water ring 11 directly uses a stainless steel seamless steel pipe of suitable size to make the water spray surface of the quenching water ring inner ring 15, and the pipe wall thickness is 7-10mm. (2) In order to ensure that the quenching water spray angle is 45 degrees to the horizontal, the water spray hole 16 is drilled into an inclined hole at 45 degrees to the horizontal. Since the pipe wall thickness is 7-10mm, the inclined hole can ensure that the quenching water spray angle is 45 degrees. (3) There is a water ring hanging device 13 in the middle of the top of the quenching water ring 11. The water ring hanging device 13 is a concave iron block with a height of 70mm, a width of 50mm and a thickness of 50mm. Its protruding two arms are about 50mm long and the distance between them is about 25mm. Two symmetrical water ring hanging device mounting holes 14 with a diameter of Ø15mm are drilled on the upper part of the two arms and connected to the crossbeam water ring hanging plate 22 by bolts. The water spray hole 16 has a diameter of 1.8-2.5mm. For details, see Figure 3 、 4 .

[0032] The load-bearing beam 2 is made of a 60mmx60mm stainless steel square tube with a wall thickness of 5mm, firmly welded to the box frame 1, and a round hole with a diameter of 26-28mm is drilled in the middle part. A 25mm nut 6 is welded on the upper part of the hole, and connected to the water ring suspension adjustment device through a screw rod 5;

[0033] The water ring 11 has an inner diameter of about 350 mm, an outer diameter of about 440 mm, and a width of about 200 mm. Except for the inner ring 15 of the water ring which is made of a stainless steel seamless pipe with a wall thickness of 7-10 mm, the rest of the positions are made of 2-2.5 mm thick stainless steel plates.

[0034] The crossbeam suspension device 20 is 50 mm long and is made of a 60 mm x 60 mm stainless steel square tube with a wall thickness of 5 mm. A circular hole with a diameter of 27-30 mm is drilled in the middle of the top and connected to the connecting rod of the water ring suspension adjustment device.

[0035] The crossbeam water ring hanging plate 22 is firmly welded to the bottom middle of the crossbeam main beam 19. It is a steel plate with a length of 2800mm, a width of 60mm and a thickness of 20mm. A water ring installation groove 23 with a width of 16mm and a length of 2600mm is milled in the middle of the steel plate.

[0036] After improving the original quenching cooling device, positive results were achieved, the quenching effect and uniformity were significantly improved, and the service life of the water ring connecting hose was also doubled. Figure 1 、 2 , 3, 4, 5, 6, 7, 8, 9, 10.

Claims

1. A quenching device for a medium frequency quenching and tempering production line, comprising a box-shaped closed shell, a water ring suspension adjustment device installed in the box-shaped closed shell, and a quenching water ring (11) installed on the water ring suspension adjustment device, characterized in that: The box-type closed shell comprises a box frame (1) made of stainless steel square tubes, a load-bearing beam (2) fixed at each end of the top of the box frame (1) for installing a water ring suspension adjustment device, and a stainless steel shell sealed with a stainless steel plate except for the bottom, wherein the stainless steel shell on the side close to the walkway is for installing, adjusting and using and maintaining the quenching water ring (11) with three detachable stainless steel waterproof guard plates (8), an observation window (9) is left in the middle upper part of the stainless steel waterproof guard plate (8), and a high-temperature resistant glass is installed on the observation window (9) to prevent the quenching water from splashing out. A box top reserved hole (7) is opened on the top of the box-type closed shell, and the metal hose (3) is connected to the water inlet pipe (12) of the quenching water ring (11) in the box through the box top reserved hole (7). Inlet and outlet holes (10) are left at both ends of the box-type closed shell. The box-type closed shell is directly installed above the quenching water pool (24), and the quenching water directly falls into the quenching water pool (24).

2. The quenching device for a medium frequency quenching and tempering production line according to claim 1, characterized in that: The water ring suspension adjustment device comprises a crossbeam main beam (19) suspended inside a box-shaped closed shell, two crossbeam suspension devices (20) arranged at both ends of the top of the crossbeam main beam (19) and symmetrically installed, a crossbeam water ring suspension plate (22) fixed in the middle of the bottom of the crossbeam main beam (19), a water ring installation groove (23) milled in the middle of the crossbeam water ring suspension plate (22), and a water ring suspension arm (13) installed in the water ring installation groove (23) and connected to the quenching water ring (11), wherein the water ring suspension arm (13) is a concave iron block, and two symmetrical water ring suspension device installation holes (14) are drilled on the upper part of the protruding two arms, and the water ring suspension arm (13) is passed through the water ring installation groove (23) by bolts. The water ring suspension device mounting hole (14) and the water ring mounting groove (23) are connected to the beam water ring suspension plate (22); a circular hole is drilled in the middle part of the load-bearing beam (2), a nut (6) is welded on the upper part of the circular hole, a screw rod (5) with a turntable (4) is installed on the nut (6), a round steel (17) is provided under the screw rod (5), a baffle (18) is provided under the round steel (17), and a beam suspension device mounting hole (21) is drilled in the middle part of the top of the beam suspension device (20), and the screw rod (5) is passed through the round steel (17) and the baffle (18) in the above-mentioned beam suspension device mounting hole (21) to achieve connection with the beam suspension device (20).

3. The quenching device for a medium frequency quenching and tempering production line according to claim 2, characterized in that: The quenching water ring (11) is entirely suspended on a suspended crossbeam main beam (19) inside the box. The crossbeam main beam (19) is made of a 60mmx60mm stainless steel square tube with a wall thickness of 5mm and a length of 3000mm. Two crossbeam suspension devices (20) are symmetrically installed at a distance of 200mm from the top of the crossbeam main beam (19) at both ends. The crossbeam suspension devices (20) are connected to the box frame (1) through a screw rod (5), a round steel (17), and a baffle (18). The crossbeam main beam (19) is connected to the quenching water ring (11) through a crossbeam water ring suspension plate (22), a water ring installation groove (23), and a water ring suspension arm (13) at the bottom.

4. The quenching device for a medium frequency quenching and tempering production line according to claim 1, characterized in that: The box-shaped closed shell has a length of 3500mm, a width of 800mm and a height of 1000mm. The box frame (1) is made of a 60mmx60mm stainless steel square tube with a wall thickness of 5mm. A load-bearing beam (2) for installing a water ring suspension adjustment device is added at each end of the top of the box frame (1) at a distance of 400mm from the end. The box frame (1) is sealed with a 1mm thick stainless steel plate. Three detachable stainless steel waterproof protective plates (8) with a width of 1100mm and a height of 900mm are installed on the side of the box body close to the walkway. The observation window (9) opened on the stainless steel waterproof protective plate (8) has a size of 500mmx300mm.

5. The quenching device for a medium frequency quenching and tempering production line according to claim 2, characterized in that: The crossbeam water ring hanging plate (22) is a steel plate with a length of 2800 mm, a width of 60 mm, and a thickness of 20 mm, and a water ring installation groove (23) with a width of 16 mm and a length of 2600 mm is milled in the middle of the steel plate.

6. The quenching device for a medium frequency quenching and tempering production line according to claim 1, characterized in that: The quenching water ring (11) is made of a stainless steel seamless steel pipe to form the water spray surface of the inner ring (15) of the quenching water ring. In order to ensure that the quenching water spray angle is 45 degrees to the horizontal, the water spray hole (16) is drilled into an inclined hole at 45 degrees to the horizontal.

Images