Quenching machine for large-diameter steel balls

Abstract

The utility model discloses a quenching machine for a large-diameter steel ball. The quenching machine comprises a tank body, and a plurality of sections of lifting mechanisms and a plurality of sections of chutes which are arranged in the tank body, each lifting mechanism comprises a pair of transmission chains arranged in an upward inclined mode, a chain plate arranged between the transmission chains, chain wheel shafts arranged at the two ends of the transmission chains and a motor used for driving the chain wheel shafts to rotate, the chain plates are provided with a plurality of push plates perpendicular to the chain plates, and the multiple sections of lifting mechanisms are connected with the multiple sections of chutes end to end. The grooves are alternately arranged along the length direction of the tank body; according to the quenching machine for the large-diameter steel balls, gravitational potential energy of the steel balls is converted into kinetic energy, the quenching machine is different from a single-chain transmission mode of an existing quenching machine, water resistance during chain transmission is reduced, motor power of a single lifting mechanism is smaller than motor power of an existing integrated transmission chain, maintenance cost is low, and the quenching machine is suitable for large-diameter steel balls. When a single lifting mechanism breaks down, a transmission mechanism of the whole quenching bath does not need to be disassembled and maintained, and only fault components need to be maintained.

Description

Technical Field

[0001] The utility model belongs to the field of steel ball heat treatment equipment, in particular to a quenching machine for large-diameter steel balls. Background Art

[0002] Steel balls are widely used in ore crushing as the grinding medium of ball mills. The impact, extrusion and grinding between steel balls and ore in ball mills grind the ore into ore particles. At the same time, the steel balls are gradually ground and consumed. Steel balls are consumables of ball mills. Ore crushing operations include different crushing levels such as coarse crushing, fine crushing and fine crushing. Due to the different ball loading capacities of different ball mill models, the loading capacities of steel balls of different diameters maintain a certain proportional relationship. The commonly used steel ball diameters are φ20, φ50, φ80, φ89, φ100 and φ110. The commonly used steel balls with diameters of φ100 and φ110 are called large-diameter steel balls. In ore crushing operations, the larger the size of the ore, the larger the diameter of the steel balls used.

[0003] The rolling production of steel balls uses bars as raw materials. The bars generally need to go through a series of heat treatments such as heating, rolling into balls, air cooling, quenching and tempering to improve hardness and wear resistance. Especially for large-diameter steel balls, the impact energy is high and the wear itself is also high. This requires large-diameter steel balls to have both high hardness and high wear resistance. During quenching, large-diameter steel balls, due to their large diameter, must ensure the quenching time in water, so that the steel ball water temperature is 840-880℃ and the water outlet temperature is 150-450℃, so that the steel ball undergoes martensite and bainite structure transformation.

[0004] like Figure 1 As shown, the existing φ100 steel ball quenching device adopts a long chain transmission structure, and drives the steel ball 12 to move from one end to the other end of the bottom plate 11 of the quenching pool through a push rod between a pair of transmission chains. Since the diameter of the φ100 steel ball is large, the quenching process time is long, and the length of the quenching pool is nearly 14 meters. A pair of single long chains 11 with a large span are used to drive the steel balls in the entire quenching pool to move. The water resistance is large, the sprocket 9 is very easy to wear, and the power requirement of the motor is large. It is necessary to set up multiple tugboats 8 and redirecting wheels 7 for supporting the chains. The single long chain 11 with a large span is very prone to chain breakage, motor failure and damage, etc. When a failure occurs, the transmission chain in the entire quenching pool needs to be disassembled, the equipment maintenance time is long, and the maintenance cost is high. Utility Model Content

[0005] The utility model aims to provide a quenching machine for large-diameter steel balls, which can reduce the water resistance of the quenching machine when it is working, reduce the failure rate of the quenching machine and reduce the maintenance cost.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] The utility model is a quenching machine for large-diameter steel balls, comprising: a tank body, a multi-stage lifting mechanism and a multi-stage chute arranged in the tank body, wherein the tank body is a rectangular structure, one end of the tank body is provided with a water inlet, and the other end is provided with a water outlet;

[0008] The lifting mechanism includes a pair of transmission chains inclined upward, a chain plate arranged between the pair of transmission chains, a sprocket shaft arranged at both ends of the pair of transmission chains, and a motor for driving the sprocket shaft to rotate. The pair of transmission chains are provided with a plurality of push plates perpendicular to the chain plates. The inclination direction of the chute is opposite to the inclination direction of the transmission chain. The multiple sections of the lifting mechanism are connected end to end with the multiple sections of the chute and are alternately arranged along the length direction of the pool body.

[0009] Preferably, a spray pipe is further included, and the spray pipe is arranged at the upper part of the pool body along the length direction of the pool body.

[0010] Preferably, the width of the chute is equal to the width of the pair of transmission chains.

[0011] Preferably, it also includes a goal guide groove and a ball outlet guide groove, the goal guide groove is arranged at one end of the pool body, the ball outlet guide groove is arranged at the other end of the pool body, the goal guide groove is connected to a section of the chute, and the ball outlet guide groove is connected to a section of the lifting mechanism.

[0012] Preferably, baffles are provided on both sides of the pair of transmission chains.

[0013] Preferably, the two sprocket shafts are respectively a driving shaft and a driven shaft, the driving shaft and the driven shaft are respectively provided with a pair of driven sprockets, the driven sprockets are cooperatively connected with the transmission chain, the driving shaft is also provided with a driving sprocket, the output end of the motor is provided with a driving sprocket, the driving sprocket is connected to the driving sprocket by a chain, thereby driving the transmission chain to rotate.

[0014] Preferably, the motor is mounted on the upper part of the side wall of the cell body through a bracket.

[0015] Preferably, a chute frame is provided at the bottom of the chute.

[0016] Preferably, each section of the lifting mechanism further includes two pairs of bearing seats, and the bearing seats are cooperatively connected to the sprocket shaft.

[0017] Preferably, the bearing seat is installed on the lifting mechanism frame.

[0018] The beneficial effects of the utility model are as follows: the quenching machine for large-diameter steel balls of the utility model is arranged alternately along the length direction of the pool body through the lifting mechanism and the chute. After the lifting mechanism lifts the steel ball from the bottom of the pool body, it slides along the chute, and the steel ball moves up and down along the quenching pool to convert the gravitational potential energy of the steel ball into kinetic energy. Different from the existing quenching machine which uses a single chain transmission method, the water resistance during chain transmission is reduced. The motor power of a single lifting mechanism is smaller than that of the existing integrated transmission chain, and the maintenance cost is low. When a single lifting mechanism fails, there is no need to dismantle and repair the transmission mechanism of the entire quenching pool, and only the faulty parts need to be repaired, thereby reducing the equipment failure rate and improving production efficiency.

[0019] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By describing the exemplary embodiments of the present invention in more detail in conjunction with 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.

[0021] Figure 1 This is a schematic diagram of the structure of the existing φ100 steel ball quenching device.

[0022] Figure 2 The schematic structural diagram of a quenching machine for large-diameter steel balls according to an embodiment of the utility model is shown.

[0023] Figure 3 The schematic diagram of the structure of a chute of an embodiment of the utility model is shown.

[0024] Figure 4 The schematic diagram of the structure of the lifting machine mechanism of one embodiment of the utility model is shown.

[0025] Figure 5 A schematic diagram of the installation of a sprocket shaft of a lifting mechanism according to an embodiment of the utility model is shown.

[0026] Figure 6 The schematic diagram of the structure of the transmission chain of one embodiment of the utility model is shown.

[0027] Explanation of the accompanying reference numerals: 1. water inlet; 2. tank body; 3. chute; 4. lifting mechanism; 5. motor; 6. water outlet; 7. redirecting wheel; 8. supporting wheel; 9. sprocket; 10. bottom plate; 11. single transmission chain; 12. steel ball; 13. chute baffle; 14. chute frame; 15. bearing seat; 16. driven sprocket; 17. push plate; 18. transmission chain; 19. chain plate; 20. lifting mechanism frame; 21. sprocket shaft; 22. driving sprocket; 23. motor. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] like Figures 2 to 6 As shown, a quenching machine for large-diameter steel balls according to an embodiment of the utility model comprises: a tank body 2, a multi-section lifting mechanism 4 and a multi-section chute 3 arranged in the tank body 2, the tank body is a rectangular structure, one end of the tank body is provided with a water inlet 1, and the other end is provided with a water outlet 2; the lifting mechanism 4 comprises a pair of transmission chains 18 arranged upwardly inclined, a chain plate 19 arranged between the pair of transmission chains, a sprocket shaft 21 arranged at both ends of the pair of transmission chains, and a motor 23 for driving the sprocket shaft 21 to rotate, a plurality of push plates 17 perpendicular to the chain plate 19 are arranged on the transmission chain 18, the inclination direction of the chute 3 is opposite to the inclination direction of the transmission chain 18, the multi-section lifting mechanism 4 is connected end to end with the multi-section chute 4, and is alternately arranged along the length direction of the tank body 2. The quenching machine of this embodiment also includes a ball guide groove and a ball outlet guide groove, the ball guide groove is arranged at one end of the tank body 2, the ball outlet guide groove is arranged at the other end of the tank body 2, the ball guide groove is connected to a section of the chute 3, and the ball outlet guide groove is connected to a section of the lifting mechanism 4.

[0030] Specifically, Figure 2 As shown, the steel ball enters the pool body 2 through the goal guide groove, and a downwardly inclined chute 3 is arranged in the pool body near the goal guide groove. The steel ball rolls along the chute 3 to the chain plate at the bottom of the pool body. The lifting mechanism 4 and the chute 3 are alternately arranged along the length direction of the pool body 1. After the lifting mechanism 4 lifts the steel ball from the bottom of the pool body 1, it rolls along the chute 3, and the steel ball moves up and down reciprocatingly along the length direction of the pool body 2, converting the gravitational potential energy of the steel ball into kinetic energy. Compared with the existing quenching machine through the single chain transmission method, the water resistance of the steel ball when moving along the quenching pool is reduced. When a single elevator fails, there is no need to dismantle and repair the transmission mechanism of the entire quenching pool, and only the faulty parts need to be repaired, thereby reducing the equipment failure rate and improving production efficiency.

[0031] In this embodiment, the quenching machine of this embodiment also includes a spray pipe (not shown), which is arranged at the upper part of the pool body 1 along the length direction of the pool body 2. During the steel ball quenching process, the steel balls must be kept below the water surface. By arranging the spray pipe at the upper part of the pool body 1, the water storage capacity in the pool body is increased, so that the chute and the lifting mechanism are always below the water surface. At the same time, the fluidity of the water in the pool body 1 is also improved, thereby improving the quenching efficiency of the steel balls.

[0032] In this embodiment, the width of the chute 3 is equal to the width of a pair of transmission chains 18, that is, the width of the chute 3 is equal to the length of the chain plate 19, which prevents the steel balls from falling to the outside of the chute 3 and the lifting mechanism 4 when rolling along the chute, thereby ensuring the continuity of the steel ball quenching process.

[0033] In this embodiment, baffles (not shown) are provided on both sides of the pair of transmission chains 18 to prevent the steel balls from falling to the outside of the transmission chains 18 .

[0034] In this embodiment, if Figure 4 and Figure 5 As shown, the two sprocket shafts 21 are respectively the driving shaft and the driven shaft, and a pair of driven sprockets 16 are respectively provided on the driving shaft and the driven shaft, and the driven sprockets 16 are connected with the transmission chain 18, and the driving shaft is also provided with a driving sprocket 22, and the output end of the motor 23 is provided with a driving sprocket, and the driving sprocket 22 is connected with the driving sprocket through a chain, thereby driving the transmission chain 18 to rotate. The motor 23 is installed on the upper part of the side wall of the tank body 1 through a bracket, and the motor 23 drives the transmission chain 18 to rotate by chain transmission, which is suitable for working conditions such as high temperature and high humidity in the quenching tank.

[0035] In this embodiment, if Figure 3 As shown, a chute frame 14 is provided at the bottom of the chute 3 , and chute baffles 13 are provided on both sides of the chute 3 to prevent the steel balls from falling to the outside of the chute 3 .

[0036] In this embodiment, if Figure 4 As shown, each section of the lifting mechanism 4 further includes two pairs of bearing seats 15 , the bearing seats 15 are cooperatively connected with the sprocket shaft 21 , and the bearing seats 15 are installed on the lifting mechanism frame 20 .

[0037] When the quenching machine of this embodiment is used, the steel ball enters the chute 3 of the pool body 1 through the ball guide groove, rolls downward along the chute 3, rolls to the chain plate 19 at the bottom of the lifting mechanism 4, and the transmission chain 18 drives the push plate 17 to push the steel ball upward to the top of the lifting mechanism 4, rolls into the lower chute 3, and rolls from the top of the chute 3 to the lifting mechanism 4. This reciprocating process is repeated many times to quench the steel ball. The steel ball is brought out of the pool body 1 through the lifting mechanism 4 at the end of the pool body 1 and enters the next heat treatment process through the ball outlet guide groove.

[0038] The quenching machine of this embodiment converts the gravitational potential energy of the steel ball into kinetic energy. Unlike the existing quenching machine, it uses a single chain transmission method to reduce the water resistance of the steel ball when moving along the quenching pool. The motor power of a single hoist is smaller than the motor power of the existing integrated transmission chain, and the maintenance cost is low. When a single hoist fails, there is no need to dismantle and repair the transmission mechanism of the entire quenching pool, only the faulty parts need to be repaired, thereby reducing equipment failure rate and improving production efficiency.

[0039] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is 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 quenching machine for large diameter steel balls, characterized in that: include: A tank body, a multi-stage lifting mechanism and a multi-stage chute arranged in the tank body, wherein the tank body is a rectangular structure, a water inlet is arranged at one end of the tank body, and a water outlet is arranged at the other end; The lifting mechanism includes a pair of transmission chains inclined upward, a chain plate arranged between the pair of transmission chains, a sprocket shaft arranged at both ends of the pair of transmission chains, and a motor for driving the sprocket shaft to rotate. The pair of transmission chains are provided with a plurality of push plates perpendicular to the chain plates. The inclination direction of the chute is opposite to the inclination direction of the transmission chain. The multiple sections of the lifting mechanism are connected end to end with the multiple sections of the chute and are alternately arranged along the length direction of the pool body.

2. The quenching machine for large diameter steel balls according to claim 1, characterized in that: It also includes a spray pipe, which is arranged at the upper part of the pool body along the length direction of the pool body.

3. The quenching machine for large diameter steel balls according to claim 1, characterized in that: The width of the chute is equal to the width of the pair of transmission chains.

4. The quenching machine for large diameter steel balls according to claim 1, characterized in that: It also includes a ball guide groove and a ball outlet guide groove, wherein the ball guide groove is arranged at one end of the pool body, and the ball outlet guide groove is arranged at the other end of the pool body, the ball guide groove is connected to a section of the chute, and the ball outlet guide groove is connected to a section of the lifting mechanism.

5. The quenching machine for large diameter steel balls according to claim 1, characterized in that: Baffles are arranged on both sides of the pair of transmission chains.

6. The quenching machine for large diameter steel balls according to claim 1, characterized in that: The two sprocket shafts are respectively a driving shaft and a driven shaft, and the driving shaft and the driven shaft are respectively provided with a pair of driven sprockets, and the driven sprockets are cooperatively connected with the transmission chain. A driving sprocket is also provided on the driving shaft, and a driving sprocket is provided at the output end of the motor. The driving sprocket is connected to the driving sprocket through a chain, thereby driving the transmission chain to rotate.

7. The quenching machine for large diameter steel balls according to claim 1, characterized in that: The motor is installed on the upper part of the side wall of the pool body through a bracket.

8. The quenching machine for large diameter steel balls according to claim 1, characterized in that: A chute frame is provided at the bottom of the chute.

9. The quenching machine for large diameter steel balls according to claim 1, characterized in that: Each section of the lifting mechanism also includes two pairs of bearing seats, and the bearing seats are cooperatively connected with the sprocket shaft.

10. The quenching machine for large diameter steel balls according to claim 9, characterized in that: The bearing seat is installed on the lifting mechanism frame.

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