Wear-resistant steel ball quenching device

Abstract

The utility model belongs to the field of steel ball manufacturing, and particularly relates to a wear-resistant steel ball quenching device which comprises a quenching pool and a cylinder body, the cylinder body comprises an inner cylinder and a semicircular outer cylinder coaxial with the inner cylinder, the semicircular outer cylinder is arranged at the bottom of the inner cylinder, a raceway space is formed between the semicircular outer cylinder and the inner cylinder, an inner spiral blade is arranged on the inner wall of the inner cylinder, and an outer spiral blade is arranged on the outer wall of the inner cylinder. Outer spiral blades are arranged on the outer wall of the inner cylinder, the rotating directions of the inner spiral blades and the outer spiral blades are opposite, a rotating shaft is arranged on the axis of the inner cylinder, the two ends of the rotating shaft are installed in the quenching pool through bearing seats, and the rotating shaft is connected with a first motor and drives the rotating shaft to rotate around the axis of the rotating shaft so as to drive the inner cylinder to rotate. According to the wear-resistant steel ball quenching device disclosed by the utility model, a steel ball rolls from the inner cylinder to the raceway space between the outer cylinder and the inner cylinder under the pushing of the spiral blade, and rolls back and forth in the cylinder body, so that the quenching stroke is increased, the occupied area is saved, and the steel ball rolls continuously in the rolling process, so that the surface of the steel ball is subjected to sufficient water quenching, and the quenching efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of steel ball manufacturing, in particular to a wear-resistant steel ball quenching device. Background Art

[0002] The service life and grinding effect of wear-resistant steel balls depend on the hardness of the steel balls. The surface hardness of the steel balls tends to decrease from the hardness to the core hardness. The quenching effect of the steel balls determines the surface hardness of the steel balls. The round steel is heated to a high temperature in a medium frequency furnace, enters the rolling mill and is rolled into shape, and then air-cooled. After the temperature drops to the quenching temperature, it enters the quenching pool for rapid cooling to achieve quenching treatment. The existing quenching device uses internal spiral single-pass cooling in the drum, which has a short cooling time and high outlet water temperature. The internal structure transformation of the steel balls is incomplete, which affects the quenching effect. The detected surface hardness is low, resulting in low wear resistance and short service life. In order to improve the quenching effect, the existing equipment slows down the drum speed, thereby extending the quenching cooling time. However, slowing down the drum speed will cause steel balls to accumulate, affecting the cooling effect. Increasing the length of the quenching cooling drum will lead to congestion of on-site equipment.

[0003] Therefore, it is necessary to provide a wear-resistant steel ball quenching device to extend the cooling time, improve the steel ball quenching effect, and enhance the surface hardness and wear resistance of the steel ball. Utility Model Content

[0004] The purpose of this utility model is to provide a wear-resistant steel ball quenching device, reduce the space occupied by the quenching device, extend the steel ball quenching stroke within a limited space, improve the quenching effect, completely transform the internal structure of the steel ball, and improve the surface hardness and wear resistance of the steel ball.

[0005] The purpose of the utility model is achieved through the following technical solutions: According to the wear-resistant steel ball quenching device of the utility model, it includes:

[0006] A quenching tank, wherein bearing seats are provided at both ends of the quenching tank, and the quenching tank is provided with a water inlet and a drain;

[0007] The cylinder body comprises: an inner cylinder and a semicircular outer cylinder coaxially arranged with the inner cylinder, the semicircular outer cylinder is arranged at the bottom of the inner cylinder and forms a raceway space with the inner cylinder, the inner wall of the inner cylinder is provided with an inner spiral blade, the outer wall of the inner cylinder is provided with an outer spiral blade, the inner spiral blade and the outer spiral blade have opposite rotation directions, and the cylinder walls of the inner cylinder and the semicircular outer cylinder are provided with a certain number of evenly arranged long strip holes; one end of the inner cylinder is provided with an inner cylinder ball end, and the other end is provided with an inner cylinder baffle, the side wall of the other end of the inner cylinder is provided with an inner cylinder ball outlet, the outer cylinder ball end is provided near the inner cylinder ball outlet, and the outer cylinder ball outlet end is provided near the inner cylinder ball end;

[0008] The semicircular outer cylinder is fixed in the quenching pool through a base support frame. A rotating shaft connected to the inner spiral blade is provided at the center of the inner cylinder. Both ends of the rotating shaft are installed in the quenching pool through the bearing seat. One end of the rotating shaft is connected to the output end of the first motor to drive the rotating shaft to rotate around its axis, thereby driving the inner cylinder to rotate.

[0009] Preferably, a chain hoist is also included, which is arranged at the ball outlet end of the outer cylinder and includes: a pair of transmission chains arranged obliquely upward, sprocket shafts and sprockets arranged at both ends of the pair of transmission chains, and chain plates arranged between the pair of transmission chains, and a push plate perpendicular to the chain plate is provided on the chain plate.

[0010] Preferably, it further includes a second motor, which is installed on the upper part of the side wall of the quenching tank through a bracket and is connected to one of the sprocket shafts through a chain drive to drive the sprocket shaft to rotate.

[0011] Preferably, the ball-intake end of the inner cylinder is provided with a ball guide groove, the ball-outlet end of the outer cylinder is provided with a ball guide groove, the ball-outlet guide groove is provided with a plurality of drainage holes, and the ball-outlet guide groove is connected to the lower part of the chain hoist for introducing the steel ball into the transmission chain.

[0012] Preferably, the inner spiral blade is evenly provided with a plurality of blade long strip holes.

[0013] Preferably, the quenching pool is provided with two pairs of drain outlets, which are respectively arranged at the upper and lower parts of both ends of the quenching pool.

[0014] Preferably, a row of water inlets is provided at each end of the quenching tank, the water outlet ends of the water inlets are tilted downward, and the two rows of water inlets are asymmetrically arranged.

[0015] Preferably, the inner cylinder ball end is provided with an annular ball blocking ring

[0016] Advantages of the present invention: The wear-resistant steel ball quenching device of the present invention has a cylinder body arranged in a quenching pool, and spiral blades with opposite rotation directions are respectively arranged on the inner wall and the outer wall of the inner cylinder, and a semicircular outer cylinder is arranged at the bottom of the inner cylinder through a base bracket, and a raceway space is formed between the semicircular outer cylinder and the inner cylinder. The inner cylinder is driven to rotate by a rotating shaft, and the steel ball enters the inner cylinder from the ball end of the inner cylinder, and under the push of the inner spiral blade, falls from the semicircular outer cylinder from the ball outlet of the inner cylinder, and rolls in the opposite direction along the raceway space between the inner cylinder and the outer cylinder, which increases the quenching stroke and saves floor space. The steel ball continuously rolls during the rolling process, so that the surface of the steel ball is fully water quenched, thereby improving the quenching efficiency.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By describing the exemplary embodiments of the present invention in more detail with reference to the accompanying drawings, the above and other purposes, features and advantages of the present invention will become more apparent. In the exemplary embodiments, the same reference numerals generally represent the same components.

[0019] Figure 1 This is an axonometric view of a wear-resistant steel ball quenching device according to an embodiment of the present invention.

[0020] Figure 2 This is a top view of a wear-resistant steel ball quenching device according to one embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the installation of the inner cylinder and the semicircular outer cylinder according to one embodiment of the present invention.

[0022] Figure 4 This is a schematic structural diagram of a ball-entry guide groove and a ball-emission guide groove according to an embodiment of the present invention.

[0023] Figure 5 This is a front view of an inner tube according to an embodiment of the present invention.

[0024] Figure 6 This is a partial cross-sectional view of an inner cylinder according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic structural diagram of a chain hoist according to an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Inner cylinder; 2. Semicircular outer cylinder; 3. Outer spiral blade; 4. Quenching pool; 5. Ball outlet of inner cylinder; 6. Chain hoist; 7. Ball guide groove; 8. Ball outlet guide groove; 9. Rotating shaft; 10. Base bracket; 11. Bearing seat; 12. First motor; 13. Ball end of inner cylinder; 14. Ball outlet end of outer cylinder; 15. Ball end of outer cylinder; 16. Inner cylinder baffle; 17. Inner spiral blade; 18. Long strip hole of blade; 19. Ball blocking ring; 20. Long strip hole of inner cylinder; 21. Long strip hole of outer cylinder; 22. Push plate; 23. Transmission chain; 24. Sprocket; 25. Sprocket bearing seat. DETAILED DESCRIPTION

[0028] The specific implementation of the present utility model is further described below with reference to the accompanying drawings.

[0029] like Figure 1-Figure 7 As shown, a wear-resistant steel ball quenching device according to an embodiment of the present invention comprises: a quenching pool 4, bearing seats 11 are provided at both ends of the quenching pool 4, and the quenching pool 4 is provided with a water inlet and a drain;

[0030] The cylinder body includes: an inner cylinder 1 and a semicircular outer cylinder 2 coaxially arranged with the inner cylinder 1. The semicircular outer cylinder 2 is arranged at the bottom of the inner cylinder 1 and forms a rolling space with the inner cylinder 1. The inner wall of the inner cylinder 1 is provided with an inner spiral blade 17, and the outer wall of the inner cylinder 1 is provided with an outer spiral blade 3. The inner spiral blade 17 rotates in the opposite direction to the outer spiral blade 3. The cylinder walls of the inner cylinder 1 and the semicircular outer cylinder 2 are provided with a certain number of evenly arranged long holes, including inner cylinder long holes 20 and outer cylinder long holes 21. Cooling water enters the inner cylinder and outer cylinder through the inner cylinder long holes 20 and the outer cylinder long holes 21, thereby enhancing the fluidity of the cooling water and improving the quenching effect.

[0031] One end of the inner tube 1 is provided with an inner tube ball end 13, and the other end is provided with an inner tube baffle 16. The side wall of the other end of the inner tube 1 is provided with an inner tube ball outlet 5. The inner tube ball end 13 is provided with an annular ball blocking ring 19. An outer tube ball end 14 is provided near the inner tube ball outlet 5, and an outer tube ball outlet end 14 is provided near the inner tube ball end 13.

[0032] Specifically, there is no inner spiral blade within a short distance of the inner cylinder ball end 13, and the inner cylinder ball end 13 is provided with a ball blocking ring 19 to ensure that the high-temperature steel ball smoothly enters the inner cylinder 1 from the ball guide groove and is driven forward by the inner spiral blade 17 to prevent the steel ball from falling from the edge of the inner cylinder 1 into the quenching pool. An inner cylinder baffle 16 is provided at the end of the inner cylinder 1, and a strip hole is provided on the inner cylinder baffle 16 to ensure that the steel ball falls from the inner cylinder ball outlet 5 to the outer cylinder ball end 14, and at the same time, the water in the inner cylinder 1 is discharged from the inner cylinder baffle 16.

[0033] The semicircular outer cylinder 2 is fixed in the quenching tank 4 through the base support frame 10. The center of the inner cylinder 1 is provided with a rotating shaft 9 welded to the inner spiral blade 17. Both ends of the rotating shaft 9 are installed in the quenching tank through bearing seats 11. One end of the rotating shaft 9 is connected to the output end of the first motor 12, which is used to drive the rotating shaft 9 to rotate around its axis, thereby driving the inner cylinder 1 to rotate.

[0034] The inner and outer walls of the inner cylinder 1 are respectively provided with spiral blades with opposite rotation directions. The semicircular outer cylinder 2 is arranged at the bottom of the inner cylinder 1 through the base bracket 10, and a rolling space is formed between the inner cylinder 1 and the inner cylinder 1. The inner cylinder is driven to rotate by the rotating shaft 9. The steel ball enters the inner cylinder 1 from the inner cylinder ball end 13. Under the push of the inner spiral blade 17, it rolls to the inner cylinder ball outlet 5 and falls to the outer cylinder ball end 15. Under the push of the outer spiral blade 3, the steel ball rolls in the opposite direction along the rolling space between the inner cylinder 1 and the outer cylinder 2. The internal liquid level of the inner cylinder 1 is close to the position of the rotating shaft 9, so that the steel ball is continuously immersed in water during the quenching process, thereby improving the quenching cooling effect. As an example, the distance between the inner cylinder 1 and the semicircular outer cylinder 2 is 100mm, which is suitable for steel balls with a diameter of 60mm-90mm.

[0035] In this embodiment, if Figure 7As shown, the wear-resistant steel ball quenching device of this embodiment also includes a chain elevator, which is arranged at the ball outlet end 14 of the outer cylinder, including: a pair of transmission chains 23 arranged obliquely upward, a sprocket shaft and a sprocket 24 arranged at both ends of the pair of transmission chains 23, and a chain plate arranged between the pair of transmission chains 23, a push plate 22 perpendicular to the chain plate is provided on the chain plate, and both ends of the sprocket shaft are connected to the quenching pool 4 through a sprocket bearing seat 25.

[0036] In this embodiment, a second motor (not shown) is further included. The second motor is installed on the upper side wall of the quenching tank 4 through a bracket and is connected to a sprocket shaft through a chain drive to drive the sprocket shaft to rotate.

[0037] In this embodiment, if Figure 3 and Figure 4 As shown, the ball-intake end 13 of the inner cylinder is provided with a ball guide groove 7, and the ball-outlet end 14 of the outer cylinder is provided with a ball guide groove 8. The ball guide groove 8 is provided with multiple drainage holes. The ball guide groove 8 is connected to the lower part of the chain elevator and is used to introduce the steel balls into the transmission chain 23. The quenched steel balls are lifted out of the quenching pool 4 by the elevator. Specifically, the bottom plate of the ball guide groove 8 is provided with a curvature to facilitate the steel balls to roll into the chain elevator. The bottom plate of the ball guide groove 8 is provided with strip holes.

[0038] In this embodiment, if Figure 7 As shown, the inner spiral blade 17 is evenly provided with a plurality of blade long strip holes 18 to ensure the fluidity of the cooling water in the inner cylinder 1 and guarantee the quenching cooling effect of the steel balls.

[0039] In this embodiment, the quenching tank 4 is equipped with two pairs of drain outlets (not shown), located at the upper and lower ends of the quenching tank 4, respectively. These drain outlets enable the timely discharge of high-temperature water from the upper liquid surface of the quenching cooling tank 4, thereby enhancing the hot water drainage capacity of the cooling tank. A row of water inlets (not shown) is provided at each end of the quenching tank 4, with the outlet ends of the inlets tilted downward. The two rows of water inlets are asymmetrically arranged to enhance the flow of cooling water within the cooling tank.

[0040] During operation, the rolled high-temperature steel ball enters the inner cylinder 1 from the inner cylinder ball end 13 through the ball guide groove 7. The inner cylinder 1 rotates clockwise under the drive of the rotating shaft 9. The inner spiral blade 17 rotates clockwise and the outer spiral blade 3 rotates counterclockwise. The steel ball rolls along the inner spiral blade 17 in the inner cylinder 1. When the steel ball rolls to the ball outlet 5 of the inner cylinder, it falls into the outer cylinder ball end 15. The steel ball rolls in the rolling space between the cylinder 1 and the semicircular outer cylinder 2 along the outer spiral blade 3 in the opposite direction and rolls out from the outer cylinder ball outlet end 15. The outer cylinder ball outlet end 15 is provided with a ball outlet guide groove 8. The steel ball rolls to the chain elevator through the ball outlet guide groove 8, and the steel ball is led out of the cooling pool to complete the quenching process.

[0041] In the wear-resistant steel ball quenching device of this embodiment, the steel balls are pushed by the spiral blades to roll from the inner cylinder 1 to the raceway space between the semicircular outer cylinder 2 and the inner cylinder 1. The steel balls roll back and forth in the cylinder, which increases the cooling stroke, saves floor space, improves space utilization, ensures the quenching and cooling effect of the steel balls, guarantees product quality and pass rate, and improves product wear resistance.

[0042] While the embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A wear-resistant steel ball quenching device, characterized in that: include: A quenching tank, wherein bearing seats are provided at both ends of the quenching tank, and the quenching tank is provided with a water inlet and a drain; The cylinder body comprises: an inner cylinder and a semicircular outer cylinder coaxially arranged with the inner cylinder, the semicircular outer cylinder is arranged at the bottom of the inner cylinder and forms a raceway space with the inner cylinder, the inner wall of the inner cylinder is provided with an inner spiral blade, the outer wall of the inner cylinder is provided with an outer spiral blade, the inner spiral blade and the outer spiral blade have opposite rotation directions, and the cylinder walls of the inner cylinder and the semicircular outer cylinder are provided with a certain number of evenly arranged long strip holes; one end of the inner cylinder is provided with an inner cylinder ball end, and the other end is provided with an inner cylinder baffle, the side wall of the other end of the inner cylinder is provided with an inner cylinder ball outlet, the outer cylinder ball end is provided near the inner cylinder ball outlet, and the outer cylinder ball outlet end is provided near the inner cylinder ball end; The semicircular outer cylinder is fixed in the quenching pool through a base support frame. A rotating shaft connected to the inner spiral blade is provided at the center of the inner cylinder. Both ends of the rotating shaft are installed in the quenching pool through the bearing seat. One end of the rotating shaft is connected to the output end of the first motor to drive the rotating shaft to rotate around its axis, thereby driving the inner cylinder to rotate.

2. The wear-resistant steel ball quenching device according to claim 1, characterized in that: It also includes a chain hoist, which is arranged at the ball outlet end of the outer cylinder, including: a pair of transmission chains arranged obliquely upward, sprocket shafts and sprockets arranged at both ends of the pair of transmission chains, and chain plates arranged between the pair of transmission chains, and a push plate perpendicular to the chain plate is provided on the chain plate.

3. The wear-resistant steel ball quenching device according to claim 2, characterized in that: It also includes a second motor, which is installed on the upper part of the side wall of the quenching tank through a bracket and is connected to one of the sprocket shafts through a chain drive to drive the sprocket shaft to rotate.

4. The wear-resistant steel ball quenching device according to claim 2, characterized in that: The ball-injection end of the inner cylinder is provided with a ball-injection guide groove, and the ball-outlet end of the outer cylinder is provided with a ball-outlet guide groove. The ball-outlet guide groove is provided with a plurality of drainage holes. The ball-outlet guide groove is connected to the lower part of the chain hoist for introducing the steel ball into the transmission chain.

5. The wear-resistant steel ball quenching device according to claim 1, characterized in that: The inner spiral blade is evenly provided with a plurality of blade long strip holes.

6. The wear-resistant steel ball quenching device according to claim 1, characterized in that: The quenching pool is provided with two pairs of drain ports, which are respectively arranged at the upper and lower parts of both ends of the quenching pool.

7. The wear-resistant steel ball quenching device according to claim 6, characterized in that: A row of water inlets is respectively provided at both ends of the quenching tank, the water outlet ends of the water inlets are tilted downward, and the two rows of water inlets are asymmetrically arranged.

8. The wear-resistant steel ball quenching device according to claim 1, characterized in that: The ball end of the inner cylinder is provided with an annular ball blocking ring.

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