Oil tank device for quenching treatment

Abstract

The utility model provides an oil tank device for quenching treatment, which relates to the technical field of metal quenching and comprises an oil tank cylinder, a support frame, an electric lifting arm and a rotary stirring component. The oil groove cylinder is composed of a positioning cylinder, a movable cylinder and a spiral water cooling jacket, three-dimensional circulation flow of quenching oil is achieved through a rotary stirring assembly, and the problems that due to the fact that oil temperature distribution of a traditional quenching oil groove is not uniform, workpieces deform, oil liquid oxidation pollution is serious, and the cooling efficiency of large workpieces is low are solved. And in cooperation with a multi-stage gear transmission mechanism, the spiral stirring roller generates planetary motion in the vertical direction while horizontally rotating, and it is ensured that quenching oil forms a three-dimensional turbulent flow field. The spiral water-cooling jacket is matched with the circulating liquid pipe to realize constant-temperature control, the filter frame can quickly load and unload workpieces, and the electric lifting arm automatically finishes hoisting operation, so that the stability and the production efficiency of the quenching process are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of metal quenching technology, and in particular to an oil tank device for quenching treatment. Background Technology

[0002] Quenching is a crucial step in metal heat treatment processes to improve the hardness, wear resistance, and fatigue resistance of materials, and it is widely used in the automotive, aerospace, and machinery manufacturing industries. Currently, quenching oil tanks generally employ mechanical stirring (such as propellers or circulating pumps) and external heat exchangers to control oil temperature, and use zoned filtration systems to reduce impurity accumulation.

[0003] A Chinese patent with publication number CN222593936U discloses an oil tank device for quenching treatment, mainly composed of a tank, a lifting device, a stirring device, a filtering device, support legs, and a bearing plate. A hydraulic cylinder drives the placement plate to descend, immersing the workpiece in the quenching oil in the tank; a motor drives the propeller blades to rotate, making the oil temperature evenly distributed; an oil pump draws oil to the oil filter tank, where a magnetic filter screen adsorbs metal particles, and the clean oil is recycled through a return pipe. This solution relies solely on a single stirring mode with a rotating propeller blade on one side, which cannot simultaneously meet the cooling needs of the inner and outer rings, makes it difficult to eliminate the temperature gradient between the edge and center of the oil tank, lacks a real-time oil temperature heating and cooling compensation system, and cannot cope with oil temperature fluctuations caused by long-term quenching.

[0004] In view of the above-mentioned related technologies, an oil tank device for quenching treatment is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] This invention proposes an oil tank device for quenching treatment, which solves the problems of uneven oil temperature distribution in traditional quenching oil tanks leading to workpiece deformation, serious oil oxidation pollution, and low cooling efficiency for large workpieces.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an oil tank device for quenching treatment, including: an oil tank cylinder, a support frame, and an electric lifting arm. The oil tank cylinder is fixedly installed on the support frame by welding. The oil tank cylinder is composed of a positioning cylinder, a movable cylinder, and a spiral water-cooling jacket. A rotating stirring component is rotatably installed inside the positioning cylinder. A filter frame for carrying the quenched workpiece is inserted into the movable cylinder. A sealing cover is movably connected to the top of the oil tank cylinder through a shaft.

[0007] The rotary stirring assembly includes a servo motor, which is fixedly installed at the bottom center of a positioning cylinder. A three-jaw turntable is fixedly connected to the output shaft of the servo motor. A main gear is engaged with a pin in the center of the three-jaw turntable. Three sets of auxiliary gears are meshed on the main gear. The three sets of auxiliary gears are rotatably mounted at the ends of the three-jaw turntable via bearings. Secondary gears are fixedly mounted on the shafts of the three sets of auxiliary gears extending out of the three-jaw turntable. Driven gears are meshed on the secondary gears. A rotating arm is fixedly connected to the shaft of the driven gear. The end of the shaft of the auxiliary gear is movably connected to the center of the rotating arm via a bearing. A spiral stirring roller is rotatably connected to the end of the rotating arm away from the driven gear. The secondary gear is connected to the spiral stirring roller via a transmission belt located inside the rotating arm. The spiral stirring roller includes a transmission shaft, discs, and strip blades.

[0008] Preferably, the outer wall of the first positioning cylinder is fixedly connected to the spiral water-cooling jacket, the second movable cylinder is movably abutted against the inner wall of the bottom end of the first positioning cylinder through a rotating ring, the second movable cylinder is located above the first positioning cylinder, the outer wall of the second movable cylinder is movably abutted against the inner wall of the spiral water-cooling jacket, and a connecting frame is fixedly provided at the top of the second movable cylinder.

[0009] Preferably, multiple discs are fixedly arranged at intervals on the drive shaft, and multiple strip blades are fixedly connected to the discs. The sidewalls of the strip blades periodically move and abut against the inner wall of the two-section movable cylinder, and the bottom end of the spiral stirring roller moves and abuts against the connecting frame.

[0010] Preferably, an electric lifting arm is fixedly installed at the end of the support frame away from the oil tank cylinder, the top of the electric lifting arm is connected to a boom via an electric turntable, and a hook is fixedly installed at the bottom of the boom.

[0011] Preferably, a lifting ring is movably provided at the top of the filter frame.

[0012] Preferably, a circulating liquid pipe and a slag discharge pipe are fixedly connected to the side wall of a positioning cylinder, the circulating liquid pipe is fixedly connected to an external circulating pump, and valves are provided on both the circulating liquid pipe and the slag discharge pipe.

[0013] Preferably, an oil fume exhaust pipe is fixedly connected to the sealing cover, the oil fume exhaust pipe is fixedly connected to an external oil fume collection hood, and an activated carbon filter layer is fixedly installed at the connection between the oil fume exhaust pipe and the sealing cover.

[0014] Compared with existing technologies, the beneficial effects of this invention include: the multi-stage gear transmission mechanism enables the spiral stirring roller to undergo compound motion, resulting in omnidirectional three-dimensional turbulence of the quenching oil and significantly improving cooling uniformity; the spiral water-cooling jacket and circulating liquid pipe form a closed-loop temperature control system, which can precisely control oil temperature fluctuations within ±2℃; the electric lifting arm, combined with the automatic hook, enables unmanned loading and unloading of workpieces, reducing labor intensity; the filter frame and oil tank adopt a quick-connect structure, facilitating rapid replacement and cleaning maintenance of the quenching oil; and the planetary motion design of the rotating stirring component reduces energy consumption, achieving both energy saving and noise reduction. This device is particularly suitable for the quenching treatment of complex workpieces such as high-precision gears and bearings, and can significantly improve the uniformity of workpiece hardness and surface finish. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0016] Figure 1 The schematic diagram shows the external structure of the oil tank cylinder according to one embodiment of the present invention.

[0017] Figure 2 The schematic diagram shows the internal structure of an oil tank according to one embodiment of the present invention.

[0018] Figure 3 The schematic diagram shows a structural schematic of a rotary stirring assembly according to one embodiment of the present invention.

[0019] Figure 4 The diagram schematically shows a cross-sectional view of an oil tank cylinder according to one embodiment of the present invention.

[0020] The following are the labeling elements in the diagram: 1. Oil tank cylinder; 11. First-stage positioning cylinder; 111. Circulating liquid pipe; 112. Slag discharge pipe; 12. Second-stage movable cylinder; 121. Connecting frame; 13. Spiral water-cooled jacket; 2. Support frame; 3. Electric lifting arm; 31. Hoist; 32. Hook; 4. Rotary stirring assembly; 41. Servo motor; 42. Three-jaw turntable; 43. Main gear; 44. Secondary gear; 45. Secondary gear; 46. Driven gear; 47. Rotating arm; 48. Spiral stirring roller; 481. Drive shaft; 482. Disc; 483. Strip blade; 5. Filter frame; 6. Sealing cover; 61. Fume exhaust pipe. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] According to one embodiment of the present invention, in conjunction with Figures 1-4 As shown. An oil tank device for quenching treatment includes: an oil tank cylinder 1, a support frame 2, and an electric lifting arm 3. The oil tank cylinder 1 is fixedly mounted on the support frame 2 by welding. The oil tank cylinder 1 consists of a positioning cylinder 11, a movable cylinder 12, and a spiral water-cooling jacket 13. A rotating stirring assembly 4 is rotatably arranged inside the positioning cylinder 11. The assembly is driven by a servo motor 41 to mesh with a main gear 43, a secondary gear 44, and a secondary gear 45, thereby driving a spiral stirring roller 48 to rotate around the inner wall of the oil tank cylinder 1. The spiral stirring roller 48 includes a transmission mechanism. The moving shaft 481, the disc 482, and the strip blades 483 are arranged in a series. The strip blades 483 periodically abut against the inner wall of the second-section moving cylinder 12 to form a radial and axial composite stirring flow field. This can break the temperature gradient between the edge and center of the oil tank, improve the fluidity of the quenching oil, and increase the uniformity of the workpiece cooling rate. A filter frame 5 for carrying the quenched workpiece is inserted into the second-section moving cylinder 12. The filter frame 5 is linked to the hook 32 of the electric lifting arm 3 through the lifting ring to realize the automated lifting of the workpiece, reduce the risk of manual operation, and improve the loading and unloading efficiency.

[0023] The outer wall of the first positioning cylinder 11 is fixedly connected to the spiral water-cooling jacket 13. The second movable cylinder 12 is movably abutted against the inner wall of the bottom end of the first positioning cylinder 11 through a rotating ring. The second movable cylinder 12 is located above the first positioning cylinder 11, and its outer wall is movably abutted against the inner wall of the spiral water-cooling jacket 13. The spiral water-cooling jacket 13 is connected to an external coolant circulation pump through a circulating liquid pipe 111 to achieve double-layer cooling of the oil tank cylinder 1, so that the quenching oil temperature fluctuation range is controlled within ±5℃, and the oil is prevented from aging and coking. A connecting frame 121 is fixedly installed at the top of the second movable cylinder 12 to support the bottom end of the spiral stirring roller 48, enhance the rotational stability of the spiral stirring roller 48, and prevent mechanical wear caused by swaying. A circulating liquid pipe 111 and a slag discharge pipe 112 are fixedly connected to the side wall of a positioning cylinder 11. The circulating liquid pipe 111 is fixedly connected to an external circulating pump. Valves are provided on both the circulating liquid pipe 111 and the slag discharge pipe 112. The slag discharge pipe 112 intercepts metal debris through a magnetic filter element. Combined with the forced oil circulation of the circulating liquid pipe 111, the cleanliness of the quenching oil is maintained at a certain level, reducing the risk of surface contamination of the workpiece.

[0024] Furthermore, multiple discs 482 are fixedly arranged at intervals on the drive shaft 481, and multiple strip blades 483 are fixedly connected to the discs 482. The sidewalls of the strip blades 483 periodically move and abut against the inner wall of the second-section movable cylinder 12. The strip blades 483 are made of flexible stainless steel. During rotation, they scrape the inner wall of the oil groove, which can peel off the oxide scale and oil coke attached to the cylinder wall, reduce impurity deposition, and extend the quenching oil replacement cycle.

[0025] Furthermore, an electric lifting arm 3 is fixedly installed at the end of the support frame 2 away from the oil tank cylinder 1. The top of the electric lifting arm 3 is connected to the boom 31 via an electric turntable. A hook 32 is fixedly installed at the bottom of the boom 31. The linkage control between the electric lifting arm 3 and the boom 31 can realize the vertical lifting and horizontal angle adjustment of the filter frame 5, ensuring that the inner and outer rings of large workpieces (such as wind turbine bearings) are cooled synchronously when immersed in oil, avoiding local overheating and deformation.

[0026] Furthermore, a lifting ring is movably provided at the top of the filter frame 5 for quick connection with the hook 32; the lifting ring adopts a rotatable design to adapt to the lifting needs of filter frames 5 of different sizes, thus improving versatility.

[0027] Furthermore, a sealing cover 6 is movably connected to the top of the oil tank cylinder 1 via a shaft. Combined with the oil fume exhaust pipe 61 and the activated carbon filter layer, it can adsorb oil fume particles generated during the quenching process, reducing environmental pollution. An oil fume exhaust pipe 61 is fixedly connected to the sealing cover 6, and the oil fume exhaust pipe 61 is fixedly connected to an external oil fume collection hood. An activated carbon filter layer is fixedly installed at the connection between the oil fume exhaust pipe 61 and the sealing cover 6. The activated carbon filter layer adopts a honeycomb structure to improve oil fume adsorption efficiency and can be replaced periodically, meeting industrial waste gas emission standards.

[0028] In this embodiment, when the quenching oil tank device is working, the servo motor 41 drives the three-jaw turntable 42 to rotate, the main gear 43 drives three sets of auxiliary gears 44 to rotate synchronously, and through the meshing linkage of the secondary gear 45 and the driven gear 46, the three rotating arms 47 rotate around the axis with different phase differences, driving the spiral stirring roller 48 to form a spiral turbulence in the two-section movable cylinder 12. Among them, the strip blades 483 of the spiral stirring roller 48 periodically scrape the cylinder wall, which not only enhances the oil disturbance but also prevents oxide scale deposition. Through the three-stage gear transmission system; the main gear 43-auxiliary gear 44-secondary gear 45-driven gear 46 realizes the compound motion of stirring, which improves the turbulent kinetic energy compared with the traditional single-shaft stirring; at the same time, the spiral water-cooling jacket 13 and the movable contact of the two-section movable cylinder 12 form a spiral cooling channel, which increases the heat exchange area compared with the straight pipe type; secondly, the electric lifting arm 3 cooperates with the lifting ring of the filter frame 5 through the hook 32, which can complete the workpiece lifting and quenching by opening and closing the sealing cover 6, avoiding the leakage of oil fumes. During quenching, the high-temperature oil is discharged and cooled through the circulating liquid pipe 111, and the oil fumes are purified through the activated carbon filter layer and discharged through the oil fume exhaust pipe 61. The whole system realizes a fully enclosed operation of quenching-stirring-cooling-fume exhaust.

[0029] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. An oil tank device for quenching treatment, characterized in that, include: Oil tank (1), support frame (2), electric lifting arm (3). The oil tank (1) is fixed to the support frame (2) by welding. The oil tank (1) includes a positioning cylinder (11), a two-section movable cylinder (12) and a spiral water-cooling jacket (13). The outer wall of the positioning cylinder (11) is fixedly connected to the spiral water-cooling jacket (13). The two-section movable cylinder (12) is in contact with the bottom inner wall of the positioning cylinder (11) through a rotating ring. The outer wall of the two-section movable cylinder (12) is in contact with the inner wall of the spiral water-cooling jacket (13). A rotating stirring assembly (4) is rotatably installed inside the positioning cylinder (11). A filter frame (5) for carrying quenched workpieces is inserted into the two-section movable cylinder (12). A sealing cover (6) is movably connected to the top of the oil tank (1) through a shaft. The rotary stirring assembly (4) includes a servo motor (41), which is fixedly installed at the bottom center of a positioning cylinder (11). A three-jaw turntable (42) is fixedly connected to the output shaft of the servo motor (41). A main gear (43) is engaged with a pin in the middle of the three-jaw turntable (42). Three sets of auxiliary gears (44) are meshed on the main gear (43). The three sets of auxiliary gears (44) are rotatably mounted at the ends of the three-jaw turntable (42) via bearings. The three sets of auxiliary gears (44) extend out of the three-jaw turntable. A secondary gear (45) is fixedly mounted on the shaft of the disc (42). A driven gear (46) is meshed on the secondary gear (45). A rotating arm (47) is fixedly mounted on the shaft of the driven gear (46). The end of the shaft of the auxiliary gear (44) is movably connected to the middle of the rotating arm (47) through a bearing. A spiral stirring roller (48) is rotatably connected to the end of the rotating arm (47) away from the driven gear (46). The secondary gear (45) is connected to the spiral stirring roller (48) through a transmission belt set inside the rotating arm (47).

2. The oil tank device for quenching treatment according to claim 1, characterized in that, The two movable cylinders (12) are located above the first positioning cylinder (11), and a connecting frame (121) is fixedly installed at the top of the two movable cylinders (12).

3. The oil tank device for quenching treatment according to claim 1, characterized in that, The spiral stirring roller (48) includes a drive shaft (481), discs (482) and strip blades (483). Multiple discs (482) are fixedly arranged at intervals on the drive shaft (481), and multiple strip blades (483) are fixedly connected to the discs (482). The sidewalls of the strip blades (483) periodically move and abut against the inner wall of the two-section movable cylinder (12), and the bottom end of the spiral stirring roller (48) moves and abuts against the connecting frame (121).

4. The oil tank device for quenching treatment according to claim 1, characterized in that, An electric lifting arm (3) is fixedly installed at one end of the support frame (2) away from the oil tank cylinder (1). The top end of the electric lifting arm (3) is connected to a boom (31) via an electric turntable. A hook (32) is fixedly installed at the bottom end of the boom (31).

5. The oil tank device for quenching treatment according to claim 1, characterized in that, The filter frame (5) is movably equipped with a hanging ring at its top.

6. The oil tank device for quenching treatment according to claim 1, characterized in that, A circulating liquid pipe (111) and a slag discharge pipe (112) are fixedly connected to the side wall of the positioning cylinder (11). The circulating liquid pipe (111) is fixedly connected to an external circulating pump. Valves are provided on both the circulating liquid pipe (111) and the slag discharge pipe (112).

7. The oil tank device for quenching treatment according to claim 1, characterized in that, An oil fume exhaust pipe is fixedly connected to the sealing cover (6), and the oil fume exhaust pipe is fixedly connected to an external oil fume collection hood. An activated carbon filter layer is fixedly provided at the connection between the oil fume exhaust pipe and the sealing cover (6).

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