Adjustable ball proportioning device for ball mill

Abstract

The application discloses a ball mill ball supplementing device with adjustable ball ratio, which comprises a base frame, a ball storage bin installed on the base frame and used for storing steel balls, a ball discharging gear installed on the base frame through a main shaft and arranged at the bottom of a discharging port of the ball storage bin and used for discharging the steel balls in the ball storage bin, a partition plate vertically arranged in the ball storage bin and arranged at the top of the ball discharging gear, the partition plate dividing the ball storage bin into a first ball storage chamber and a second ball storage chamber, and a blockage preventing and buffering assembly arranged in the discharging port at the bottom of the first ball storage chamber and the second ball storage chamber and used for buffering the steel balls needed to be discharged in the first ball storage chamber and the second ball storage chamber and pushing back the steel balls when the ball storage bin is blocked. The application supplements the steel balls in the form of active ball discharging, effectively avoids the defects that the traditional ball supplementing bin needs to supplement the steel balls through pre-weighing and is seriously damaged during the ball pouring process.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a ball mill ball replenishment device with adjustable ball ratio. Background Technology

[0002] As a grinding medium in ball mills, steel balls wear down during the grinding process and need to be replenished regularly to maintain grinding efficiency.

[0003] Existing ball mill ball loading methods are relatively time-consuming. Typically, a steel ball hopper is added at the feed end. After the steel balls are weighed, they are conveyed to the top of the hopper via a conveyor belt. Under gravity, the steel balls fall into the hopper and slide down the feed pipe into the ball mill cylinder. Another method involves loading steel balls into a movable-bottom hopper, weighing them, and then using a crane to empty the balls from the movable-bottom hopper into the main hopper. While these two methods are simple to operate, they have certain drawbacks. The hopper is subjected to repeated impacts from the steel balls over a long period, leading to progressively greater damage and eventual hopper failure. Frequent hopper replacement and maintenance increase the ball mill's operating costs. Furthermore, the ball diameter needs to be adjusted according to the filling rate and output when loading the ball mill. These two methods are not only complex but also have shortcomings in cost management. For example, the invention patent with publication number CN104368425A discloses a device for adding steel balls to a ball mill. The device uses a belt conveyor to transport steel balls into the cylinder. Adding balls requires stopping the machine to operate, and the number of balls added is controlled by weighing. The process is cumbersome and time-consuming, which greatly affects production efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a ball mill ball replenishment device with adjustable ball ratio, which aims to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ball mill ball replenishment device with adjustable ball ratio, comprising:

[0006] Base frame;

[0007] A ball storage bin, which is installed on a base frame, is used to store steel balls;

[0008] The volleyball gear is mounted on the base frame via a main shaft and is located at the bottom of the ball storage bin's discharge port, used to discharge steel balls from the ball storage bin;

[0009] A partition plate is vertically installed inside the ball storage chamber and is located at the top of the volleyball gear. The partition plate divides the ball storage chamber into a first ball storage chamber and a second ball storage chamber.

[0010] An anti-blocking buffer assembly is disposed in the bottom discharge port of the first and second ball storage chambers. It is used to buffer the steel balls that need to be discharged from the first and second ball storage chambers and to push the steel balls back when blockage occurs.

[0011] Furthermore, the anti-blocking buffer assembly includes three layers of buffer plates: a ball-blocking plate and a ball-pushing plate that are movably disposed on the partition plate inside the first ball storage chamber and the second ball storage chamber from top to bottom, and a volleyball buffer plate that is movably disposed at the bottom of the discharge port of the first ball storage chamber and the second ball storage chamber.

[0012] Furthermore, a ring hook is provided at one end of the ball-blocking plate, and the ball-blocking plate is movably installed on the partition plate through the ring hook. An adjustment component for adjusting the angle of the ball-blocking plate is provided at the bottom of the movable end of the ball-blocking plate.

[0013] Furthermore, one end of the ball-pushing plate is hinged to the partition plate, and the ball-pushing plate is located at the bottom of the ball-blocking plate. A hydraulic cylinder is also movably installed on the partition plate at the bottom of the ball-blocking plate, and the transmission end of the hydraulic cylinder is hinged to the other end of the ball-pushing plate.

[0014] Furthermore, a volleyball buffer plate is hinged to both sides of the bottom of the discharge port of the first and second ball storage chambers, and the volleyball gear is located between the two volleyball buffer plates; a buffer spring is provided on the outer side of the movable end of the volleyball buffer plate; one end of the buffer spring is installed on one side of the base frame through the spring seat plate, and the other end of the buffer spring is hinged to the outer side of the movable end of the volleyball buffer plate.

[0015] Furthermore, the adjustment assembly includes vertical support frame uprights set at the top of the front and rear sides of the base frame. The support frame uprights are provided with multiple openings, and the support rods are installed in the corresponding openings of two support frame uprights to support the ball baffle plate. The topmost opening on the support frame upright is not higher than the installation position of the ring hook on the ball baffle plate.

[0016] Furthermore, the ball storage bin consists of two bent plates on both sides, a sliding plate connected to the bottom of the bent plates, and side plates on the front and rear sides. The sliding plate is inclined. A first ball outlet is formed between the sliding plate and the ball-blocking plate, and a second ball outlet is formed between the sliding plate and the ball-pushing plate. A third ball outlet is formed between the volleyball buffer plate and the volleyball gear. A discharge port is formed between the sliding plates.

[0017] Furthermore, it also includes a motor for driving the volleyball gear, which is connected to the main shaft of the volleyball gear via a coupling, driving the volleyball gear to rotate.

[0018] Compared with existing technologies, the present invention has the following advantages: The present invention uses an active ball loading method to add balls, which effectively avoids the defects of traditional ball loading chambers, such as the need to pre-weigh the balls for replenishment and the serious damage to the ball loading chamber during the ball loading process. The ball loading chamber can store steel balls of different diameters, and the number of each type of steel ball can be adjusted according to the required ball ratio. In addition, the anti-blocking buffer component can slow down the falling speed of the steel balls, which greatly reduces the impact of the falling steel balls on the feed pipe of the ball mill. At the same time, it can push the steel balls back in case of blockage to prevent the steel balls from blocking the feed port. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a diagram of the internal structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the connection structure between the motor and the main shaft of the present invention.

[0022] Figure 4 For the present invention Figure 1 Enlarged view of point A in the image.

[0023] In the diagram, 101 is the first ball storage chamber; 102 is the second ball storage chamber; 111 is the bending plate; 112 is the sliding plate; 113 is the side plate; 2 is the ball baffle plate; 3 is the partition plate; 4 is the ball pusher plate; 5 is the hydraulic cylinder; 6 is the coupling; 7 is the volleyball gear; 8 is the volleyball buffer plate; 10 is the base frame; 1001 is the support frame upright; 1002 is the support rod; 11 is the buffer spring; 12 is the motor; 14 is the ring hook; 15 is the spring seat plate; and 17 is the main shaft. Detailed Implementation

[0024] like Figures 1-4 As shown, the present invention provides a technical solution: a ball mill ball replenishment device with adjustable ball ratio, comprising:

[0025] Base frame 10.

[0026] A ball storage bin, which is installed on the base frame 10, is used to store steel balls.

[0027] The volleyball gear 7 is mounted on the base frame 10 via the main shaft 17 (both the main shaft 17 and the base frame 10 are provided with bearings for rotation). The volleyball gear 7 is located at the bottom of the ball storage bin discharge port and is used to discharge the steel balls in the ball storage bin.

[0028] The partition plate 3 is vertically installed inside the ball storage chamber and is located at the top of the volleyball gear 7. The partition plate 3 divides the ball storage chamber into a first ball storage chamber 101 and a second ball storage chamber 102. The first ball storage chamber 101 and the second ball storage chamber 102 can store steel balls of different diameters according to the grinding process.

[0029] An anti-clogging buffer assembly is installed at the bottom discharge port of the first ball storage chamber 101 and the second ball storage chamber 102. It is used to buffer the steel balls that need to be discharged from the first ball storage chamber 101 and the second ball storage chamber 102, slow down the falling speed of the steel balls, reduce the impact of the falling steel balls on the feed pipe of the ball mill, and push the steel balls back when there is a blockage, so as to prevent the steel balls from blocking the discharge port.

[0030] The anti-blocking buffer assembly includes three layers of buffer plates: a ball-blocking plate 2 and a ball-pushing plate 4, which are movably disposed from top to bottom on the partition plate 3 inside the first ball storage chamber 101 and the second ball storage chamber 102; and a volleyball buffer plate 8, which is movably disposed at the bottom of the discharge port of the first ball storage chamber 101 and the second ball storage chamber 102; wherein, the first ball storage chamber 101 and the second ball storage chamber 102 are each provided with three layers of buffer plates.

[0031] One end of the ball-blocking plate 2 is provided with a ring hook 14, and the ball-blocking plate 2 is movably installed on the partition plate 3 through the ring hook 14. The bottom of the movable end of the ball-blocking plate 2 is provided with an adjustment component for adjusting the angle of the ball-blocking plate 2.

[0032] The adjustment assembly includes support frame uprights 1001 vertically arranged on the top of the front and rear sides of the base frame 10. The support frame uprights 1001 are provided with multiple openings. Support rods 1002 are installed in the corresponding openings of two support frame uprights 1001 to support the ball baffle plate 2. The topmost opening on the support frame uprights 1001 is not higher than the installation position of the ring hook 14 on the ball baffle plate 2.

[0033] One end of the ball-pushing plate 4 is hinged to the partition plate 3, and the ball-pushing plate 4 is located at the bottom of the ball-blocking plate 2. A hydraulic cylinder 5 is also movably installed on the partition plate 3 located at the bottom of the ball-blocking plate 2, and the transmission end of the hydraulic cylinder 5 is hinged to the other end of the ball-pushing plate 4.

[0034] Among them, a volleyball buffer plate 8 is hinged to both sides of the bottom of the discharge port of the first ball storage chamber 101 and the second ball storage chamber 102, and the volleyball gear 7 is located between the two volleyball buffer plates 8; a buffer spring 11 is provided on the outer side of the movable end of the volleyball buffer plate 8; one end of the buffer spring 11 is installed on one side of the base frame 10 through the spring seat plate 15, and the other end of the buffer spring 11 is hinged to the outer side of the movable end of the volleyball buffer plate 8.

[0035] The ball storage chamber is composed of two bent plates 111 on both sides, a sliding plate 112 connected to the bottom of the bent plates 111, and side plates 113 on the front and rear sides. The sliding plate 112 is inclined. A first ball outlet is formed between the sliding plate 112 and the ball-blocking plate 2, and a second ball outlet is formed between the sliding plate 112 and the ball-pushing plate 4. A third ball outlet is formed between the volleyball buffer plate 8 and the volleyball gear 7. A discharge port is formed between the sliding plates 112.

[0036] It also includes a motor 12 for driving the volleyball gear 7. The motor 12 is connected to the main shaft 17 of the volleyball gear 7 through a coupling 6, driving the volleyball gear 7 to rotate and discharge the steel ball.

[0037] The workflow of this invention is as follows: Based on the ball mill model and grinding process requirements, steel balls of different diameters are loaded into the first ball storage chamber 101 and the second ball storage chamber 102 for steel ball reserves. When ball feeding stops, no steel balls flow out of the ball replenishment device, and the ball baffle 2 is subjected to the pressure of the steel balls. Its movable end is pressed against the support rod 1002, and the open structure of the ring hook 14 ensures that the ball baffle 2 is always in a natural state of being squeezed by the steel balls. By setting the support rod 1002 on openings at different heights on the support frame upright 1001, the natural drop angle of the ball baffle 2 can be changed, thereby changing the size of the first ball outlet. Generally, different lengths of the ball baffle 2 can be selected according to the diameter of the steel balls, or the limiting height of the support rod 1002 can be adjusted so that the width of the first ball outlet is slightly larger than the diameter of the steel balls, ensuring that the steel balls can slowly fall along the sliding plate 112. The steel balls slowly pass through... After the first ball outlet, the ball will stop in front of the second ball outlet. The width of the second ball outlet is controlled by the swing angle of the ball pusher plate 4. The reciprocating motion of the hydraulic cylinder 5 drives the ball pusher plate 4 to swing, thereby pushing the steel balls to continuously pass through the second ball outlet (which can play a role in reverse pushing and anti-blocking). During the continuous operation of the hydraulic cylinder 5, the steel balls fill the narrow space of the first and second ball outlets. Under the pressure of the steel balls above and the repeated squeezing of the ball pusher plate 4 below, the ball baffle plate 2 is forced to jump to relieve the reaction force of the steel balls on the ball pusher plate 4. The steel balls roll down from the second ball outlet and move along the sliding plate 112 to enter the third ball outlet. The steel balls move to the front of the third ball outlet and accumulate until all the steel balls stop moving. When adding balls, the motor 12 drives the main shaft 17 through the coupling 6 and drives the ball volley gear 7 to rotate. After the steel balls fall into the tooth grooves on the ball volley gear 7, they are discharged from the bottom of the base frame 10 and enter the ball mill.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball mill ball replenishment device with adjustable ball ratio, characterized in that, include: Base frame (10); A ball storage bin, which is installed on a base frame (10) and is used to store steel balls; Volleyball gear (7), the volleyball gear (7) is mounted on the base frame (10) via the main shaft (17), the volleyball gear (7) is located at the bottom of the ball storage bin discharge port, and is used to discharge the steel balls in the ball storage bin; The partition plate (3) is vertically installed in the ball storage chamber and is located at the top of the volleyball gear (7). The partition plate (3) divides the ball storage chamber into a first ball storage chamber (101) and a second ball storage chamber (102). Anti-blocking buffer assembly, the anti-blocking buffer assembly is disposed in the bottom discharge port of the first ball storage chamber (101) and the second ball storage chamber (102), used to buffer the steel balls that need to be discharged in the first ball storage chamber (101) and the second ball storage chamber (102), and to push the steel balls back when blocked; The anti-blocking buffer assembly includes three layers of buffer plates, namely a ball-blocking plate (2) and a ball-pushing plate (4) which are movably installed on the partition plate (3) inside the first ball storage chamber (101) and the second ball storage chamber (102) from top to bottom, and a ball-volleying buffer plate (8) which is movably installed at the bottom of the discharge port of the first ball storage chamber (101) and the second ball storage chamber (102). A ring hook (14) is provided at one end of the ball baffle (2). The ball baffle (2) is movably installed on the compartment plate (3) through the ring hook (14). An adjustment component for adjusting the angle of the ball baffle (2) is provided at the bottom of the movable end of the ball baffle (2). One end of the ball pusher (4) is hinged to the partition plate (3), and the ball pusher (4) is located at the bottom of the ball baffle (2). A hydraulic cylinder (5) is also movably installed on the partition plate (3) at the bottom of the ball baffle (2). The transmission end of the hydraulic cylinder (5) is hinged to the other end of the ball pusher (4). A volleyball buffer plate (8) is hinged to both sides of the bottom of the discharge port of the first ball storage chamber (101) and the second ball storage chamber (102). The volleyball gear (7) is located between the two volleyball buffer plates (8). A buffer spring (11) is provided on the outer side of the movable end of the volleyball buffer plate (8). One end of the buffer spring (11) is installed on one side of the base frame (10) through the spring seat plate (15), and the other end of the buffer spring (11) is hinged to the outer side of the movable end of the volleyball buffer plate (8). The ball storage chamber is composed of two bent plates (111) on both sides, a sliding plate (112) connected to the bottom of the bent plates (111), and side plates (113) on the front and rear sides. The sliding plate (112) is inclined. A first ball outlet is formed between the sliding plate (112) and the ball blocking plate (2), and a second ball outlet is formed between the sliding plate (112) and the ball pushing plate (4). A third ball outlet is formed between the volleyball buffer plate (8) and the volleyball gear (7). A discharge port is formed between the sliding plates (112).

2. The ball mill ball replenishing device with adjustable ball ratio according to claim 1, characterized in that: The adjustment assembly includes support frame uprights (1001) vertically set on the top of the front and rear sides of the base frame (10). The support frame uprights (1001) have multiple openings. Support rods (1002) are installed in the corresponding openings of the two support frame uprights (1001) to support the ball baffle (2). The topmost opening on the support frame uprights (1001) is not higher than the installation position of the ring hook (14) on the ball baffle (2).

3. The ball mill ball replenishing device with adjustable ball ratio according to claim 2, characterized in that: It also includes a motor (12) for driving the volleyball gear (7), which is connected to the main shaft (17) of the volleyball gear (7) via a coupling (6) to drive the volleyball gear (7) to rotate.

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