Ore grinding medium feeding device

Abstract

The utility model provides an ore grinding medium feeding device, which belongs to the technical field of ore grinding and comprises a bearing frame, a feeding shell, a mounting block and a plurality of opening and closing mechanisms. The bearing frame is fixedly mounted at a material inlet of the ball mill, the bearing frame is provided with a receding opening, a feeding area and a receding area, the feeding shell is slidably connected to the bearing frame, and the feeding shell is provided with a mounting opening and a discharging opening; the mounting block body is mounted in the mounting opening and is connected with the feeding shell; a plurality of accommodating holes are formed in the mounting block body; the opening and closing mechanism comprises a sealing bottom plate and a driving assembly, the sealing bottom plate is located in the feeding shell and abuts against the lower end of the mounting block, the sealing bottom plate seals the bottom of the containing hole, and the driving assembly is connected with the sealing bottom plate and used for driving the sealing bottom plate to seal or open the bottom of the containing hole. According to the ore grinding medium feeding device provided by the utility model, the adding efficiency of grinding media of different grades is improved, and the adding operation of the grinding media of different grades is simple and quick.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ore grinding, more specifically, relates to a kind of ore grinding medium feeding device. BACKGROUND

[0002] Ore grinding is a key link in mineral processing, and its main purpose is to crush the ore to a suitable particle size so that the subsequent beneficiation or extraction process can be carried out efficiently. The ore grinding process is usually carried out in a ball mill, a rod mill or a self-mill, etc. The ball mill is one of the most commonly used devices. The effect of ore grinding directly affects the recovery rate and concentrate grade of beneficiation, so the optimization of ore grinding technology is of great significance to improve the efficiency of mineral processing. Grinding media is a key element in ball mill for material crushing and grinding. To maintain the relative stability of the number and quality of grinding media in the mill, grinding media needs to be added to the ball mill in batches.

[0003] Among them, the calculation of ore grinding medium ratio mainly has the following methods in production practice: (1) according to the feed size composition, the percentage of various diameter steel balls in the total mass of ball load is equal to the yield of corresponding particle size in the feed, to determine the ore grinding medium ratio, which is referred to as the feed size related method below. (2) according to the equal density of various diameter steel balls in the ball load to calculate the ratio, which is referred to as the equal density method below. (3) according to the percentage of various size steel balls in the total mass of ball load being proportional to the diameter of steel ball to calculate the ore grinding medium ratio, which is referred to as the mass diameter equal ratio method below. (4) according to the total surface area of various diameter steel balls being equal to calculate the ore grinding medium ratio, which is referred to as the equal surface area method below. (5) according to the percentage of various diameter steel balls in the total mass of ball load being proportional to the surface area of single ball to calculate the ratio, which is referred to as the mass surface area equal ratio method below. (6) according to the equal number of various diameter steel balls to determine the ratio, which is referred to as the equal number method below. (7) Professor Chen Bingchen of Northeast University established a computer simulation algorithm for calculating the size and ratio of ore grinding medium based on the principle of maximum disappearance rate of particle size, the principle of ore grinding dynamics and the principle of linear superposition of ore grinding process, according to the feed size distribution, the product size distribution requirement, the material properties and the mill speed, which is referred to as the product size related method below. The appropriate ore grinding medium ratio is related to the grinding time, the pulp viscosity and the product fineness. Generally, the ore grinding medium ratio is calculated according to the feed size related method, and the grinding efficiency is the highest. If the content of coarse level in the feed is low, the grinding time is long, and the pulp viscosity is large, the ore grinding medium ratio can be calculated according to the equal density method, and the proportion of large ball grinding medium is appropriately increased to improve the grinding efficiency. At present, the ball mill is provided with a feeding shell, and the ore, grinding medium with different gradation, etc. are added to the inside of the ball mill through the feeding shell. However, the addition operation of grinding medium with different gradation is relatively inconvenient, and the addition efficiency is relatively low. SUMMARY

[0004] The utility model discloses a grinding medium feeding device, to solve the inconvenient operation of adding different gradation grinding medium and the technical problem of low adding efficiency in prior art.

[0005] To realize above-mentioned purpose, the utility model adopts technical scheme is: provide a kind of grinding medium feeding device, including:

[0006] Bearing frame is fixedly installed at the material inlet of ball mill, and the bearing frame is provided with an avoiding opening corresponding to the material inlet;The bearing frame has a feeding area and an avoiding area, and the feeding area is located directly above the avoiding opening, and the avoiding area and the feeding area are arranged along the length direction of the bearing frame;

[0007] Feeding shell is slidably connected to the bearing frame;The upper end of the feeding shell is provided with a mounting opening, and the lower end is provided with a discharge opening corresponding to the avoiding opening;

[0008] Mounting block is fitted into the mounting opening, and is connected with the feeding shell;A plurality of accommodating holes for accommodating grinding media of different sizes are formed in the mounting block;

[0009] The opening and closing mechanism is in one-to-one correspondence with the plurality of accommodating holes;The opening and closing mechanism includes a closed bottom plate and a driving assembly, the closed bottom plate is located in the feeding shell, and abuts against the lower end of the mounting block, the closed bottom plate is closed at the bottom of the accommodating hole from bottom to top;The driving assembly is installed on the mounting block, and is connected with the closed bottom plate, for driving the closed bottom plate to block or open the bottom of the accommodating hole.

[0010] In a possible implementation, the bearing frame includes two linear guides arranged in parallel at intervals, and the linear guides are located on the two sides of the material inlet respectively;The avoiding opening is formed between the two linear guides, and one end of the two linear guides is fixedly connected to the ball mill, and the other end extends away from the material inlet;The side of the two linear guides close to the material inlet is the feeding area, and the other side is the avoiding area;The lower end of the feeding shell is provided with two groups of sliding blocks for cooperating with the two linear guides.

[0011] In a possible implementation, the bearing frame further includes a telescopic cover surrounding the linear guides, the telescopic cover is located on the two sides of the sliding block, and one end of the telescopic cover is connected with the linear guide, and the other end is connected with the outside of the sliding block.

[0012] In a possible implementation, the lower end of the feeding shell is provided with a flow guide cylinder arranged around the discharge opening, and the flow guide cylinder is located between the two sliding blocks.

[0013] In a possible implementation, the driving assembly comprises a vertical rod and an elastic reset member, the vertical rod is located in the accommodating hole and has a lower end connected with the closed bottom plate, and an upper end of the vertical rod is provided with a limiting plate located above the mounting block; the elastic reset member is sleeved on the vertical rod and has a lower end abutting against the mounting block and an upper end abutting against the limiting plate.

[0014] In a possible implementation, a plurality of long strip plates are arranged on the mounting block and correspond to the plurality of accommodating holes one by one; the long strip plates are located in the accommodating holes and are fixedly connected with the mounting block; the long strip plates are provided with sliding holes arranged therethrough, the vertical rod is slidingly connected in the sliding holes, and the lower end of the elastic reset member abuts against the long strip plates.

[0015] In a possible implementation, the driving assembly further comprises a linear driver located above the limiting plate, a free end of the linear driver moves downward and acts on the limiting plate; the ore grinding medium feeding device further comprises a driving mechanism connected with the feeding shell, and the driving mechanism is used to drive the feeding shell to move linearly along the bearing frame.

[0016] In a possible implementation, the feeding shell comprises a conical cylinder and a straight cylinder fixedly installed on an upper end of the conical cylinder, and the mounting block is installed on the straight cylinder; the conical cylinder has an upper end larger than a lower end, and an inner wall of the conical cylinder is provided with a wear-resistant layer.

[0017] In a possible implementation, two outwardly extending mounting flat plates are arranged on an outer side of a lower end of the conical cylinder, and the two mounting flat plates are slidingly connected with the bearing frame.

[0018] In a possible implementation, the feeding shell further comprises a plurality of reinforcing rib plates installed on two sides of the conical cylinder, and the reinforcing rib plates are fixedly connected with outer walls of the conical cylinder and upper end surfaces of the mounting flat plates.

[0019] The beneficial effects of the grinding media feeding device provided by this utility model are as follows: Compared with the prior art, the grinding media feeding device of this utility model, during operation, first adds the various grinding media to be added in the next batch into different receiving holes to ensure the accuracy of multiple grinding media; when grinding media need to be added, the feeding shell is driven to move along the support frame to the feeding area on the support frame, at which time the discharge port, the clearance port, and the material inlet of the feeding shell are aligned vertically; then the drive component is activated to act on the closed bottom plate, causing the closed bottom plate to move downward and open the bottom of the receiving hole, allowing the grinding media to smoothly and quickly enter the feeding shell, and then pass through the discharge port, the clearance port, and the material inlet into the ball mill, thus completing the grinding media addition operation, with high grinding media addition efficiency. After the feeding operation is completed, the feeding shell is driven to move to the clearance area on the support frame to facilitate the addition of material to the ball mill. By controlling the addition time, separate addition, and addition amount of media with different gradations, well-graded ball mill media can be obtained. Different grades of grinding media, including large, small, square, and round ones, are added through different receiving holes, which improves the efficiency of adding different grades of grinding media and makes the operation of adding different grades of grinding media simple and quick. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A cross-sectional view of the grinding media feeding device provided in an embodiment of this utility model;

[0022] Figure 2 A top view of the grinding media feeding device provided in an embodiment of this utility model;

[0023] Figure 3 A half-sectional view of the feeding shell provided in an embodiment of this utility model;

[0024] Figure 4 A side view of the feeding shell provided in an embodiment of this utility model;

[0025] Figure 5 A connection diagram of the linear guide rail, slider, and telescopic cover provided for an embodiment of this utility model;

[0026] Figure 6 This is a schematic diagram showing the connection between the grinding media feeding device and the feed shell of the ball mill, as provided in an embodiment of this utility model.

[0027] Wherein, the reference signs in the figures:

[0028] 1, bearing frame; 11, escape port; 12, feeding area; 13, escape area; 14, linear guide rail; 15, telescopic cover; 2, feeding shell; 21, mounting port; 22, discharge port; 23, sliding block; 24, flow guide cylinder; 25, conical cylinder; 26, straight cylinder; 27, wear-resistant layer; 28, mounting flat plate; 281, mounting hole; 29, reinforcing rib plate; 3, mounting block; 31, containing hole; 32, long strip plate; 33, sliding hole; 34, flange plate; 4, opening and closing mechanism; 41, closed bottom plate; 42, driving assembly; 43, vertical rod; 44, elastic reset member; 45, limiting plate; 5, feeding shell. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the following will further describe the present application in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0033] Please refer to Figures 1 to 6The utility model provides a kind of grinding medium feeding device, comprising bearing frame 1, feeding shell 2, mounting block 3 and opening and closing mechanism 4;Bearing frame 1 is fixedly installed at the material inlet of ball mill, and the bearing frame 1 is provided with the avoidance mouth 11 corresponding to the material inlet;Bearing frame 1 has feeding area 12 and avoidance area 13, feeding area 12 is located directly above the avoidance mouth 11, and avoidance area 13 and feeding area 12 are arranged along the length direction of bearing frame 1;Feeding shell 2 is slidably connected to bearing frame 1;The upper end of feeding shell 2 is provided with mounting port 21, and the lower end is provided with discharge port 22 corresponding to the avoidance mouth 11 up and down;Mounting block 3 is fittedly installed in mounting port 21, and is connected with feeding shell 2;A plurality of accommodating holes 31 for accommodating grinding media of different sizes are formed in mounting block 3;The number of opening and closing mechanism 4 is multiple, and corresponds to the plurality of accommodating holes 31 one by one;Opening and closing mechanism 4 includes closed bottom plate 41 and driving assembly 42, closed bottom plate 41 is located in feeding shell 2, and abuts with the lower end of mounting block 3, and closed bottom plate 41 is closed at the bottom of accommodating hole 31 from bottom to top;Driving assembly 42 is installed on mounting block 3, and is connected with closed bottom plate 41, for driving closed bottom plate 41 to block or open the bottom of accommodating hole 31.

[0034] Compared with the prior art, the grinding medium feeding device provided by the utility model, when working, first, the next batch of various grinding media to be added is added to different accommodating holes 31 respectively to ensure the accuracy of the various grinding media;When the grinding media need to be added, drive the feeding shell 2 to move along the bearing frame 1 to the feeding area 12 on the bearing frame 1, at this time, the discharge port 22 of the feeding shell 2, the avoidance mouth 11 and the material inlet correspond up and down;Then start the driving assembly 42 to act on the closed bottom plate 41, make the closed bottom plate 41 move downward to open the bottom of the accommodating hole 31, so that the grinding media can smoothly and quickly enter the feeding shell 2, then pass through the discharge port 22, the avoidance mouth 11 and the material inlet to enter the ball mill, and then complete the addition operation of the grinding media, the addition efficiency of the grinding media is higher. After the feeding work is completed, drive the feeding shell 2 to move to the avoidance area 13 on the bearing frame 1, which is convenient for the material addition of the ball mill. By controlling the addition time, separate addition and addition amount of different gradation media, good gradation ball mill media is obtained. Different gradation small and large square and round grinding media are added in different accommodating holes, which improves the addition efficiency of different gradation grinding media, and also makes the addition operation of different gradation grinding media simple and fast.

[0035] The upper end of mounting block 3 and feeding shell 2 is provided with flange plate 34 fittedly installed, and mounting block 3 and feeding shell 2 are fixedly connected by using a plurality of bolts. The ball mill has feeding shell 5, the material inlet is formed in the upper end of the feeding shell 5, and one end of the bearing frame 1 is fixedly connected to the upper end of the feeding shell 5.

[0036] At present, when selecting grinding medium, firstly, parameters suitable for the ball mill steel ball and casting size, filling rate and the like are calculated. And the existing steel ball consumption is investigated, and the existing steel ball unit consumption and technical index are found out; the industrial index of the existing ball mill steel ball consumption is investigated. Then, sieve analysis test is carried out, steel ball ratio is obtained, and adding ball, supplementing ball system and process research scheme are formulated; and the existing steel ball consumption is investigated, and the steel ball unit consumption and technical index are found out; and then experimental verification test is carried out, including medium size process research and ratio process research, and technical parameters required by industrial test are obtained. Finally, medium process research industrial test and grinding classification system process research are carried out, including ball consumption process research test, steel ball size process research test and casting process research test.

[0037] Preferably, the grading scheme of the grinding medium is to use multi-grading, and the steel ball sizes are 100mm, 80mm, 60mm and 40mm, and the proportions are 3:4:2:1. Through this optimized grading, the grinding efficiency is improved by 15%, the energy consumption is reduced by 10%, the grinding product particle size is uniform, and the process requirements are met.

[0038] Please refer to Figure 1 , Figure 5 and Figure 6 as a specific embodiment of the grinding medium feeding device provided by the utility model, the bearing frame 1 includes two linear guides 14 arranged in parallel at intervals, and the linear guides 14 are located on the two sides of the material inlet respectively; the two linear guides 14 form an avoiding opening 11 therebetween, and one end of the two linear guides 14 is fixedly connected to the ball mill, and the other end extends away from the material inlet; one side of the two linear guides 14 close to the material inlet is a feeding area 12, and the other side is an avoiding area 13; the lower end of the feeding shell 2 is provided with two groups of sliding blocks 23 for cooperating with the two linear guides 14 for installation; the sliding blocks 23 can slide flexibly along the linear guides 14, so as to drive the feeding shell 2 to move on the linear guides 14. When in the feeding process, the feeding shell 2 is moved to the feeding area 12 through the sliding blocks 23, at this time, the grinding medium can be conveniently added into the ball mill. And when other special operations or equipment maintenance, the feeding shell 2 can be slid to the avoiding area 13 by means of the sliding blocks 23, and the existence of the avoiding opening 11 provides enough space for other operations, avoiding the obstruction of the feeding shell 2. And due to the stability of the linear guides 14, the stability of the feeding shell 2 during the movement can be ensured, the accuracy of feeding and the safety of the overall operation of the equipment are ensured.

[0039] Please refer to Figure 5As a specific embodiment of the ore grinding medium feeding device provided by the utility model, the bearing frame 1 further comprises a telescopic cover 15 surrounding the linear guide rail 14, the telescopic cover 15 is located on both sides of the sliding block 23, one end of the telescopic cover 15 is connected with the linear guide rail 14, and the other end is connected with the outside of the sliding block 23. The telescopic cover 15 can effectively prevent impurities such as dust and debris from entering the matching area of the linear guide rail 14 and the sliding block 23, thereby reducing the wear and jamming phenomenon between the linear guide rail 14 and the sliding block 23 due to impurities, and improving the stability and precision of the movement of the feeding shell 2 on the bearing frame 1. At the same time, the double-sided setting structure of the telescopic cover 15 can always maintain good protection for the linear guide rail 14 when the sliding block 23 reciprocates along the linear guide rail 14, no matter which direction the sliding block 23 moves, the telescopic cover 15 can be self-adaptively telescopic, ensuring the cleanliness of the internal environment of the linear guide rail 14. Moreover, since one end of the telescopic cover 15 is connected with the linear guide rail 14 and the other end is connected with the outside of the sliding block 23, this connection mode not only ensures the effectiveness of the protection, but also plays a limiting auxiliary role for the sliding block 23 to a certain extent, preventing the sliding block 23 from disengaging from the linear guide rail 14, and further improving the reliability of the overall structure of the bearing frame 1.

[0040] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 , as a specific embodiment of the ore grinding medium feeding device provided by the utility model, the lower end of the feeding shell 2 is provided with a flow guide cylinder 24 arranged around the discharge port 22, and the flow guide cylinder 24 is located between the two sliding blocks 23; due to the arrangement mode of the two sliding blocks 23 and the two linear guide rails 14, the distance between the discharge port 22 and the material inlet is increased; thus the arrangement of the flow guide cylinder 24 helps to guide the direction of the flow of the grinding medium from the discharge port 22, so that the grinding medium can more accurately enter the material inlet.

[0041] Please refer to Figure 1 and Figure 2As a specific embodiment of the ore grinding medium feeding device provided by the utility model, the driving assembly 42 comprises a vertical rod 43 and an elastic reset member 44, the vertical rod 43 is located in the containing hole 31, and the lower end is connected with the closed bottom plate 41, and the upper end of the vertical rod 43 is provided with a limiting plate 45 located above the mounting block 3; the elastic reset member 44 is sleeved on the vertical rod 43, and the lower end is abutted on the mounting block 3, and the upper end is abutted on the limiting plate 45. Under the normal state, the elastic reset member 44 gives the vertical rod 43 an upward force, so that the limiting plate 45 is kept at a certain height position, so as to ensure that the closed bottom plate 41 well closes the bottom of the containing hole 31. When external force acts on the limiting plate 45, for example, the limiting plate 45 is pressed downward, the vertical rod 43 will move downward along the containing hole 31, at this time, the elastic reset member 44 is compressed. In this process, the elastic reset member 44 stores elastic potential energy, and the closed bottom plate 41 will also move downward with the vertical rod 43 by a certain distance. Once the external force disappears, the elastic reset member 44 will release the stored elastic potential energy, push the vertical rod 43 to reset upward, the limiting plate 45 returns to the initial position, and the closed bottom plate 41 also restores to the original height, so that the driving assembly 42 is simple in structure and can realize effective driving and resetting functions.

[0042] Please refer to Figure 1 and Figure 2 As a specific embodiment of the ore grinding medium feeding device provided by the utility model, the mounting block 3 is provided with a plurality of long strip plates 32, and the plurality of long strip plates 32 correspond to the plurality of containing holes 31 one by one; the long strip plate 32 is located in the containing hole 31 and is fixedly connected with the mounting block 3; the long strip plate 32 is provided with a sliding hole 33 arranged in penetration, the vertical rod 43 is slidingly connected in the sliding hole 33, and the lower end of the elastic reset member 44 is abutted on the long strip plate 32. The long strip plate 32 is arranged at the central position of the containing hole 31, and the two ends are fixedly connected with the inner wall of the containing hole 31 or the upper end of the mounting block 3, and the sliding hole 33 is arranged on the long strip plate 32, so that the vertical rod 43 is slidingly connected in the sliding hole 33. After the elastic reset member 44 is sleeved on the vertical rod 43, it is located between the limiting plate 45 and the long strip plate 32, so as to ensure that the elastic reset member 44 is stably and reliably used.

[0043] As a specific embodiment of the grinding medium feeding device provided by the utility model, the driving assembly 42 further comprises a linear driver above the limiting plate 45, and the free end of the linear driver moves downward to act on the limiting plate 45; the grinding medium feeding device further comprises a driving mechanism connected with the feeding shell 2, and the driving mechanism is used for driving the feeding shell 2 to move linearly along the bearing frame 1. The driving mechanism and the linear driver can realize cooperative operation through a control system, and during operation, the driving mechanism is started by the control system to drive the feeding shell 2 to move along the bearing frame 1 and to the feeding area 12 of the bearing frame 1; then the linear driver is started by the control system to act on the limiting plate 45 at the upper end of the vertical rod 43, and then the vertical rod 43 is pressed to move downward to make the closed bottom plate 41 move downward to open the containing hole 31. After the feeding operation is completed, the linear driver and the driving mechanism are started to move reversely to make the feeding shell 2 move to the avoiding area 13 on the bearing frame 1. Through this cooperative operation mode, the feeding process of the grinding medium can be accurately controlled, and the timing and quantity of feeding can be accurately adjusted according to different production requirements. Preferably, the linear driver is a pneumatic cylinder or an electric push rod, and the driving mechanism adopts a pneumatic cylinder or an oil cylinder.

[0044] Please refer to Figure 1 、 Figure 3 and Figure 4 , as a specific embodiment of the grinding medium feeding device provided by the utility model, the feeding shell 2 comprises a conical cylinder 25 and a straight cylinder 26 fixedly installed at the upper end of the conical cylinder 25, and the mounting block 3 is installed on the straight cylinder 26; the conical cylinder 25 has an upper large and lower small structure, and the inner wall of the conical cylinder 25 is provided with a wear-resistant layer 27; the straight cylinder 26 is arranged to facilitate the installation of the mounting block 3 on the feeding shell 2, and the shape structure of the conical cylinder 25 makes the grinding medium converge towards the discharge port 22 at the lower end of the entire feeding shell 2. In addition, the wear-resistant layer 27 is arranged on the inner wall of the conical cylinder 25, which greatly improves the service life of the feeding shell 2 and reduces the damage caused by the friction of the grinding medium.

[0045] Please refer to Figure 1 、 Figure 3 and Figure 4 , as a specific embodiment of the grinding medium feeding device provided by the utility model, the lower end of the conical cylinder 25 is provided with two outwardly extending mounting plates 28, and the two mounting plates 28 are slidably connected with the bearing frame 1; the arrangement of the two mounting plates 28 makes the sliding connection between the conical cylinder 25 and the bearing frame 1 more stable and reliable. Precise guide grooves are formed on each mounting plate 28, which are closely matched with the bearing frame 1 to ensure that the conical cylinder 25 can smoothly slide horizontally on the bearing frame 1. A stop iron is further arranged on the bearing frame 1 to limit the movement position of the feeding shell 2. A mounting hole 281 is formed on the mounting plate 28, and a sliding block 23 is installed on the lower end surface of the mounting plate 28 and fixedly connected by bolts.

[0046] Please refer to Figure 1 , Figure 3 and Figure 4 , as a specific embodiment of the grinding medium feeding device provided by the utility model, the feeding shell 2 further comprises a plurality of reinforcing rib plates 29 installed on both sides of the conical cylinder 25, the reinforcing rib plates 29 are fixedly connected with the outer wall of the conical cylinder 25 and the upper end surface of the mounting plate 28; the arrangement of the reinforcing rib plates 29 effectively improves the overall structural strength of the feeding shell 2; during the operation of the equipment, the feeding shell 2 needs to bear certain impact force and the weight of the material and other external forces, the reinforcing rib plates 29 can uniformly disperse the force borne by the conical cylinder 25 to the mounting plate 28, preventing the conical cylinder 25 from deforming or being damaged due to uneven force. At the same time, since the reinforcing rib plates 29 are fixedly connected with the outer wall of the conical cylinder 25 and the upper end surface of the mounting plate 28, this connection mode makes the three form a stable structure, further improving the stability of the feeding shell 2. Whether it is the impact of the material during the feeding process or the vibration during the operation of the equipment, the feeding shell 2 can maintain good integrity, thereby ensuring the normal operation of the equipment and prolonging the service life of the equipment. The reinforcing rib plates 29 are divided into two groups and installed on the left and right sides of the feeding shell 2.

[0047] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A grinding media charging device, characterized by, The application relates to a ball mill medium feeding device. The ball mill medium feeding device comprises a bearing frame fixedly installed at a material inlet of a ball mill, and a avoiding opening corresponding to the material inlet is formed in the bearing frame; the bearing frame is provided with a feeding area and an avoiding area, the feeding area is located directly above the avoiding opening, and the avoiding area and the feeding area are arranged in a length direction of the bearing frame; A feeding shell is slidably connected to the bearing frame; the upper end of the feeding shell is provided with a mounting opening, and the lower end is provided with a discharging opening corresponding to the avoiding opening in a vertical direction; A mounting block is fittedly installed in the mounting opening and connected with the feeding shell; a plurality of accommodating holes for accommodating ball mill media of different sizes are formed in the mounting block; A plurality of opening and closing mechanisms are provided and correspond to the accommodating holes one by one; the opening and closing mechanism comprises a closed bottom plate and a driving assembly; the closed bottom plate is located in the feeding shell and abuts against the lower end of the mounting block; the closed bottom plate is closed at the bottom of the accommodating hole from bottom to top; the driving assembly is installed on the mounting block and connected with the closed bottom plate, and is used for driving the closed bottom plate to close or open the bottom of the accommodating hole.

2. The grinding media charging device of claim 1, wherein The bearing frame comprises two linear guides arranged in parallel and spaced apart, and the linear guides are located on the two sides of the material inlet respectively; the avoiding opening is formed between the two linear guides; one end of the two linear guides is fixedly connected to the ball mill, and the other end extends away from the material inlet; the side of the two linear guides close to the material inlet is the feeding area, and the other side is the avoiding area; the lower end of the feeding shell is provided with two groups of sliding blocks for fittingly installing the two linear guides respectively.

3. A grinding media charging device as claimed in claim 2, wherein, The bearing frame further comprises a telescopic cover surrounding the linear guides; the telescopic cover is located on the two sides of the sliding blocks; one end of the telescopic cover is connected with the linear guide, and the other end is connected with the outer side of the sliding block.

4. The grinding media charging device of claim 2, wherein The lower end of the feeding shell is provided with a flow guide cylinder arranged around the discharging opening; the flow guide cylinder is located between the two sliding blocks.

5. The grinding media charging device of claim 1, wherein The driving assembly comprises a vertical rod and an elastic reset member; the vertical rod is located in the accommodating hole and connected with the closed bottom plate at the lower end; the upper end of the vertical rod is provided with a limiting plate located above the mounting block; the elastic reset member is sleeved on the vertical rod and abuts against the mounting block at the lower end and abuts against the limiting plate at the upper end.

6. A grinding media charging device as claimed in claim 5, wherein, The mounting block is provided with a plurality of long strip plates corresponding to the accommodating holes one by one; the long strip plates are located in the accommodating holes and fixedly connected with the mounting block; the long strip plates are provided with sliding holes arranged in a penetrating mode; the vertical rod is slidably connected in the sliding hole, and the lower end of the elastic reset member abuts against the long strip plate.

7. The grinding media charging device of claim 5, wherein The driving assembly further comprises a linear driver located above the limiting plate; the free end of the linear driver moves downward and acts on the limiting plate; the ball mill medium feeding device further comprises a driving mechanism connected with the feeding shell; the driving mechanism is used for driving the feeding shell to move linearly along the bearing frame.

8. The grinding media charging device of claim 1, wherein The feeding shell comprises a conical cylinder and a straight cylinder fixedly installed on the upper end of the conical cylinder, and the mounting block is installed on the straight cylinder; the conical cylinder is large at the upper end and small at the lower end, and the inner wall of the conical cylinder is provided with a wear-resistant layer.

9. A grinding media charging device as claimed in claim 8, wherein, Two outwardly extending mounting flat plates are arranged on the outer side of the lower end of the conical cylinder, and the two mounting flat plates are in sliding connection with the bearing frame.

10. A grinding media charging device as claimed in claim 9, wherein, The feeding shell further comprises a plurality of reinforcing rib plates installed on the two sides of the conical cylinder, and the reinforcing rib plates are fixedly connected with the outer wall of the conical cylinder and the upper end surface of the mounting flat plate.

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