Stirring device for solid solution pool

Abstract

The utility model discloses a stirring device for a solid solution pool. The stirring device comprises a power device, a supporting device and a stirring device, the supporting device supports the power device and the stirring device, and the power device drives the stirring device through the belt pulley set. And the middle part of the stirring shaft of the stirring device is rotationally connected with a bearing seat bearing, and the lower part is connected with a stirrer. And a sleeve of the stirrer is inserted into the stirring shaft and is fixed by a bolt. Blades are evenly distributed on the circumference of the stirring rod, and stirring of the blades enables cooling liquid to flow upwards. And the sleeve is inserted into the stirring rod, so that the stirrer extends downwards. According to the utility model, the flowing of cooling liquid in the tank can be enhanced, and a thermal resistance steam film is destroyed. All the used components are common outsourcing components, so that the manufacturing is fast, and the cost is low.

Description

Technical Field

[0001] The utility model is applied to the field of heat treatment and relates to a cooling water pool for solid solution treatment of stainless steel, specifically a stirring device for coolant in the water pool, and is also suitable for water pools for quenching and cooling of other materials. Background Art

[0002] In order to increase the corrosion resistance of austenitic stainless steel, it is generally necessary to carry out solution treatment before delivery to dissolve carbides in austenite to increase the corrosion resistance of stainless steel. The solution treatment of stainless steel usually uses water as a cooling medium to enhance the cooling rate and avoid the precipitation of carbides. When stainless steel above 1100°C is solution treated and cooled in water, the high-temperature workpiece will quickly heat the contacted water to the steam temperature, thereby generating a steam film on the surface. The steam film forms a thermal resistance and hinders the cooling of the stainless steel. In order to obtain a satisfactory cooling rate, it is usually practiced to shake the workpiece in water to destroy the steam film. This practice requires manual operation or the setting of a power device. Alternatively, salt water is used to destroy the steam film and enhance cooling by using the sputtering of salt particles precipitated by water vaporization, but salt water will cause rapid corrosion of the quenching pool. Or adopt a forced circulation water inlet method, such as a quenching pool water supply device that can stir water provided by CN205347513U, with a set of each corner, and four water nozzles inclined upward on the upper water pipe. The water sprayed from the water nozzles forms circulating water, so that the quenched workpiece is cooled quickly and evenly. CN220079135U discloses a cast steel pipe continuous quenching device, in which the height of the quenching pool water inlet corresponds to the height of the inner hole of the cast steel pipe, and the cooling water can be directly delivered to the inner hole of the cast steel pipe to strengthen the cooling of the inner hole of the cast steel pipe. This forced circulation water inlet method requires the setting of a special cooling water pool and a water pump. Or adopt a method of setting a stirrer in the quenching pool for forced stirring, such as the quenching pool medium stirring system disclosed by CN202181321U, which uses four low-power stirrers to make the medium flow, and the swirl speed and flow direction of the medium are stable and controllable, so as to achieve the purpose of uniform quenching. CN215593125U provides a heat treatment water pool stirring device, in which a plurality of submersible mixers are installed at equal distances on the inner bottom wall of the water pool and are located outside the barrier net. The mixer drives the water flow to circulate, thereby improving the uniformity of the water flow temperature and the uniformity of the surface hardness of the quenched product. However, the forced stirring method of the mixer is suitable for large space quenching pools without cooling pools. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a solid solution water pool stirring device to strengthen the flow of cooling liquid in the pool, destroy the heat resistance steam film and accelerate the cooling of austenitic stainless steel.

[0004] The technical solution adopted by the utility model is: the solid solution water tank stirring device includes a power device, a supporting device and a stirring device. The supporting device adopts a steel structure body including a main beam and a longitudinal beam, which is used to support and fix the power device and the stirring device. The power device includes a motor and a worm reducer installed on the main beam; the motor is a frequency-adjustable motor with output shafts at both ends, and the output shaft of the worm reducer is a vertical shaft, which is installed with a pulley. The stirring device includes a stirrer, a bearing seat, a pulley, and a stirring shaft. The upper part of the stirring shaft is connected to the pulley, the middle part is rotatably connected to the bearing of the bearing seat, and the lower part is connected to the stirrer. The bearing seat is installed on the longitudinal beam. The stirring device is connected to the worm reducer and the adjacent stirring devices by a pulley group composed of a pulley and a V-belt. The stirrer includes a sleeve, a blade, and a stirring rod; the stirring rod is inserted into the sleeve and welded and fixed, and small holes that cooperate with each other are processed at the lower part of the stirring rod and the upper part of the sleeve. The sleeve is plugged with the stirring shaft and fixed with a pin. The blades are evenly distributed on the circumference of the stirring rod, and the stirring of the blades causes the coolant to flow upward. The sleeve is plugged into the stirring rod and fixed with a latch pin to achieve the downward extension of the stirrer. The latch pin is preferably a split pin.

[0005] Preferably, the above-mentioned pulley assembly can also be replaced by a sprocket and a chain.

[0006] Preferably, a hydraulic cylinder is connected to the crossbeam of the main steel structure. The hydraulic cylinder drives the device to rise and fall, and cooperates with the stainless steel pipe on the track, which is suitable for the solid solution treatment of stainless steel pipes in continuous production lines.

[0007] Preferably, the two ends of the main beam are fixedly connected to the hanging beam, and the upper hook and the lower hook are fixedly installed on the hanging beam. The upper hook is hung with the crane hook, and the lower hook lifts the stainless steel workpiece, which is suitable for the solid solution treatment of a single stainless steel pipe.

[0008] Preferably, the longitudinal beam corresponds to the outer shape and size of the workpiece, and can lift stainless steel workpieces of different shapes for solution treatment.

[0009] The beneficial effects of the utility model are: the utility model strengthens the flow of the coolant in the pool, destroys the heat resistance steam film, and strengthens the solid solution treatment of stainless steel. It can also be used for quenching treatment of other alloy steels. The parts used in the device are all common purchased parts in the field of mechanical manufacturing, which are quick to manufacture and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the front view of the structure of Example 1;

[0011] Figure 2 yes Figure 1 Schematic diagram of top view;

[0012] Figure 3 yes Figure 1Schematic diagram of the left side;

[0013] Figure 4 yes Figure 1 A partial enlarged view of

[0014] Figure 5 is a schematic structural diagram of Embodiment 2;

[0015] Figure 6 is a schematic structural diagram of Embodiment 3;

[0016] Among them: 1- agitator, 2- split pin, 3- crossbeam, 4- bearing seat, 5- pulley, 6- V-belt, 7- worm reducer, 8- main beam, 9- agitator shaft, 10- motor, 11- coupling, 12- longitudinal beam, 13- casing, 14- blade, 15- agitator rod, 16- small hole;

[0017] 20-hydraulic cylinder, 21-track, 22-stop rod, 23-stainless steel pipe, 24-lifting beam, 25-upper hook, 26-lower hook, 27-stainless steel workpiece. DETAILED DESCRIPTION

[0018] Example 1.

[0019] The structure of the stirring device of the solid solution water tank in this embodiment is as shown in the attached figure. Figure 1-3 As shown. It includes a power device, a supporting device and a stirring device. The supporting device includes a main beam 8, a longitudinal beam 12, a cross beam 3, etc., which is a steel structure body and supports the power device and the stirring device. The power device includes a motor 10, a worm reducer 7, etc. installed on the main beam 8. The output shaft of the motor 10 is connected to the input shaft of the worm reducer 7 by a coupling 11. By adjusting the coupling 11 and the connecting shaft, the distance between the motor 10 and the worm reducer 7 can be adjusted. The output shaft of the worm reducer 7 is a vertical shaft, and two pulleys 5 are installed on the upper part of the output shaft. The pulleys 5 are respectively connected to the pulleys 5 of the left and right adjacent stirring devices through a V-belt 6. The stirring device includes a stirrer 1, a bearing seat 4, a pulley 5, a stirring shaft 9, etc. The upper part of the stirring shaft 9 is fixedly connected to the pulley 5, the middle part is rotatably connected to the bearing seat 4, and the lower part is fixedly connected to the stirrer 1. The pulleys 5 of the adjacent stirring devices are connected by a V-belt 6. The bearing seat 4 is fixedly installed on the longitudinal beam 12.

[0020] The structure of the stirrer 1 is shown in the attached Figure 4 As shown, it includes a sleeve 13, blades 14, a stirring rod 15, etc. The sleeve 13 is fixedly connected to the lower part of the stirring shaft 9, and the stirring rod 15 is inserted into the sleeve 13 and welded and fixed. The stirring rod 15 has blades 14 evenly distributed around the circumference, and small holes 16 that match each other are processed at the lower part of the stirring rod 15 and the upper part of the sleeve 13. The sleeve 13 is fitted with the stirring rod 15, and the split pin 2 is inserted into the small hole 16. In this way, multiple stirrers are connected to achieve the downward extension of the stirrer to adapt to workpieces of different sizes.

[0021] In this embodiment, a hydraulic cylinder 20 is connected to the crossbeam 3, and the up and down movement of the cylinder rod of the hydraulic cylinder 20 is realized, which is suitable for the solution treatment of stainless steel pipes on the production line. Figure 3 As shown. The hydraulic cylinder 20 drives the device to lift, and the stainless steel pipe 23 rolls quickly from the track 21 to the solution treatment station and is positioned by the stop bar 22. The hydraulic cylinder 20 drives the device to descend, and at the same time starts the motor 10, the coupling 11 rotates, and drives the upper pulley 5 to rotate through the worm reducer 7, and the V-belt 6 drives all the agitators to rotate. The blade 14 is located on the near side of the outer surface of the stainless steel pipe. The rotation of the blade 14 strengthens the upward flow of the coolant, which is consistent with the flow direction of the heated coolant. The negative pressure formed by the stirring at the bottom of the blade is supplemented by the nearby coolant, thereby destroying the steam film and strengthening the cooling of the stainless steel pipe. At the same time, the coolant is directly sent into the inner hole of the stainless steel pipe 23 to strengthen the cooling of the inner hole of the stainless steel pipe. After the stainless steel pipe is solution treated, the hydraulic cylinder lifts the device, puts down the stop bar 22, and the stainless steel pipe rolls from the stop bar 22 to the next station, and then raises the stop bar 22 again to prepare for the next stainless steel pipe.

[0022] Example 2.

[0023] This embodiment is a modification of embodiment 1 and is applicable to the solution treatment of a single stainless steel pipe. Figure 5 In this embodiment, the hydraulic cylinder 20 in the first embodiment is removed, and a suspension beam 24 is fixedly connected to both ends of the main beam 8, and an upper suspension hook 25 and a lower suspension hook 26 are fixedly installed on the suspension beam 24.

[0024] Before the solution treatment, the upper hook 25 is lifted by a crane, and the lower hook 26 is connected with a lifting rope for lifting the stainless steel pipe. After the stainless steel pipe 23 is lifted, it is quickly put into the solution tank, immersed in the coolant, and the motor 10 is started to destroy the steam film with the stirring of the blades to strengthen the cooling of the outer surface of the stainless steel pipe.

[0025] Example 3.

[0026] This embodiment is a modification based on the embodiment 2, and can be applied to stainless steel workpieces of different shapes and sizes. Figure 6 In this embodiment, the supporting longitudinal beam in Embodiment 2 is designed according to the outer shape and size of the stainless steel workpiece 27, and the longitudinal beam corresponds to the outer shape and size of the stainless steel workpiece 27, so as to ensure that the agitator can play a role in destroying the steam film.

[0027] The method of use of this embodiment is the same as that of embodiment 2.

[0028] The motor of the utility model adopts a motor with adjustable frequency and output shafts at both ends. The V-belt connection can be changed to other pulley group connections or chain and sprocket connections, and the cotter pin can also be replaced by other pins. The design and manufacture of the support device ensure the balance of the solid solution water tank stirring device. The components used in the utility model are all common purchased components in the field of mechanical manufacturing, such as motors, couplings, pulleys, V-belts, bearings and bearing seats, etc. It only needs to weld the support device and mass-produce the agitators. The device is quick to manufacture, low in cost, and convenient for spare parts. The power supply of the motor should be taken from the overhead crane, and the cable should be connected in the form of a plug and socket. When the device is hoisted in Example 2 and Example 3, the power supply is connected, and the cable should be wrapped with thermal insulation cloth.

[0029] The utility model strengthens the flow of coolant in the pool, destroys the heat resistance steam film on the outer surface of the stainless steel pipe or workpiece, accelerates the cooling of the stainless steel pipe or workpiece, and strengthens the solid solution treatment of stainless steel. The device can also be used for quenching treatment of other alloy steels.

Claims

1. A solid solution water tank stirring device, comprising a power device, a supporting device and a stirring device; characterized in that: The supporting device is a steel structure body including a main beam (8) and a longitudinal beam (12), supporting the power device and the stirring device; The power device comprises a motor (10) and a worm reducer (7) mounted on a main beam (8); the motor (10) is a motor with adjustable frequency and output shafts at both ends; The stirring device comprises a stirrer (1), a bearing seat (4), a pulley (5), and a stirring shaft (9); the stirring shaft (9) is connected to the pulley (5) at the top, rotatably connected to the bearing of the bearing seat (4) at the middle, and connected to the stirrer (1) at the bottom; the bearing seat (4) is mounted on the longitudinal beam (12); The stirrer (1) comprises a sleeve (13), blades (14), and a stirring rod (15); the stirring rod (15) is inserted into the sleeve (13) and fixed by welding, and small holes (16) that cooperate with each other are processed at the lower part of the stirring rod (15) and the upper part of the sleeve (13); the blades (14) are evenly distributed around the circumference of the stirring rod (15), and the blades (14) enable the coolant to flow upward; The stirring device is connected to the worm reducer (7) and adjacent stirring devices by a pulley group consisting of a pulley (5) and a V-belt (6); The sleeve (13) is plugged into the stirring shaft (9) and fixed by a latch.

2. A solid solution water tank stirring device according to claim 1, characterized in that: The upper and lower connections of the stirrer (1) are connected by inserting a sleeve (13) and a stirring rod (15) and fixing them with a latch.

3. A solid solution water tank stirring device according to claim 1 or 2, characterized in that: The latch is a split pin.

4. A solid solution water tank stirring device according to claim 1, characterized in that: The pulley set is replaced by a sprocket and chain.

5. A solid solution water tank stirring device according to claim 1, characterized in that: A hydraulic cylinder (20) is connected to the crossbeam (3) of the steel structure body.

6. A solid solution water tank stirring device according to claim 1, characterized in that: The two ends of the main beam (8) are fixedly connected to a suspension beam (24), and an upper suspension hook (25) and a lower suspension hook (26) are fixedly installed on the suspension beam (24).

7. A solid solution water tank stirring device according to claim 1, characterized in that: The longitudinal beam (12) corresponds to the outer shape and size of the workpiece.

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