CN212441438U

CN212441438U - Mechanical ball feeder

Info

Publication number: CN212441438U
Application number: CN202021572428.0U
Authority: CN
Inventors: 陈国刚; 游立强; 张小瑞; 陈隐嵩; 蓝继伟; 周友盛; 张振伟; 叶宁; 张磊; 王军人; 郑能文
Original assignee: Fujian Yaheng Machinery Co ltd
Current assignee: Fujian Yaheng Machinery Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-02-02
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a mechanical type adds ball machine, including frame, storage ball storehouse, bin gate mechanism, upset ball claw mechanism, switching-over conveyer belt, weighing machine structure and main control system. The ball storage bin stores grinding balls; a ball storage bin ball outlet channel is formed between the material door mechanism and the ball storage bin bottom plate; the ball claw overturning mechanism is positioned at the ball outlet channel of the ball storage bin to grab the grinding balls. The reversing conveying belt is positioned at the ball unloading end of the turnover ball claw mechanism to receive the grinding balls grabbed by the turnover ball claw mechanism, and the conveying direction of the reversing conveying belt is perpendicular to the ball unloading direction of the turnover ball claw. The weighing mechanism comprises a conveying belt and a first weighing sensor; the conveyer belt sets up in the below of the ball end that falls of switching-over conveyer belt, and the direction of delivery of conveyer belt is perpendicular with the direction of delivery of switching-over conveyer belt, and first weighing sensor bears the conveyer belt. The control host computer obtains the measured value of first weighing sensor, calculates the play ball volume of conveyer belt.

Description

Mechanical ball feeder

Technical Field

The utility model relates to a ball-milling equipment field, concretely relates to mechanical type adds ball machine.

Background

The ball mill is the most extensive grinding mixing machine at present, and is widely applied to the industries of mineral separation, building materials, electric power, cement, chemical industry and the like. The ore grinding process plays an important role in the whole production process, and has the advantages of large investment specific gravity, high energy consumption specific gravity and great influence on the product quality. The ball mill works by filling grinding balls (mostly steel balls) to realize the grinding function, and the quality of the ore grinding effect is realized by the steel balls in the mill. After the ball mill starts to grind ores, steel balls in the mill are worn, the total ball amount is reduced, and the steel balls are required to be continuously supplemented to maintain the optimal ball amount and the optimal ball ratio.

At present, most ball mills in China are manually added with balls, and ball adding methods are various. The manual ball adding has the defects that firstly, the ball adding amount is inaccurate, secondly, the ball adding is not timely, meanwhile, along with the large-scale development of the ball mill, the amount of the steel balls needing to be added is continuously increased, the frequency is accelerated, and the requirement of ore grinding is difficult to meet by only manually adding the balls. Mechanical ball adding machines have appeared.

The mechanical ball feeder can supplement steel balls according to requirements, so that the filling rate and the ball-to-material ratio of the ball mill are kept within the required range, and the high-efficiency and low-consumption operation of the ball mill and the realization of an ore grinding process are guaranteed. However, the existing mechanical ball feeder still has some defects:

1. the whole device structure is overstaffed, the ball discharging process is disordered, and the grinding balls are easy to block;

2. the ball bin has no bin gate mechanism, so that the anti-theft of the ball bin cannot be realized;

3. the existing mechanical ball feeder can only monitor the ball weight in a ball storage bin, but cannot realize weighing and quantitative output of grinding balls;

4. the ball is easy to be discharged from the ball storage bin and the ball catching ring joint is easy to be blocked and stuck, and the machine is easy to be damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compact structure, practical mechanical type add ball machine.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the ball storage bin is arranged in the rack and used for storing grinding balls;

the bin gate mechanism is arranged in the ball storage bin and forms a ball storage bin ball outlet channel with a bottom plate of the ball storage bin;

the ball turning claw mechanism is arranged in the rack and positioned at the ball outlet channel of the ball storage bin so as to grab the grinding balls;

the reversing conveying belt is arranged in the rack and is positioned at the ball unloading end of the turnover ball claw mechanism so as to receive the grinding balls grabbed by the turnover ball claw mechanism, and the conveying direction of the reversing conveying belt is vertical to the ball unloading direction of the turnover ball claw;

the weighing mechanism comprises a conveying belt and a first weighing sensor; the conveying belt is arranged below the ball falling end of the reversing conveying belt, and the conveying direction of the conveying belt is vertical to that of the reversing conveying belt; the first weighing sensor bears the conveying belt;

and the control host machine is used for acquiring the measured value of the first weighing sensor and calculating the ball output of the conveying belt.

Preferably, the device also comprises a bin gate and a bin gate opening and closing mechanism; the bin doors are a pair and cover bin openings of the ball storage bins; the bin gate opening and closing mechanism comprises a push-pull device, a push block, a pair of swing rods and a pair of swing arms, the push-pull device pushes and pulls the push block to move up and down, one ends of the swing arms are fixedly connected with the outer edges of the bin gates respectively, the other ends of the swing arms are hinged to the rack, one ends of the swing rods are fixedly connected with the hinged ends of the swing arms respectively, and the other ends of the swing rods are rotatably and slidably connected with the two ends of the push block through strip-shaped holes respectively; the bin doors are driven by the bin door opening and closing mechanism to open and close in a door opening and closing mode.

Preferably, the bin gate mechanism comprises a base plate, a rotating plate and an angle adjuster, the base plate is fixed in the ball storage bin, and the base plate is provided with a protruding part pointing to the ball storage bin side; the rotating plate is hinged to the lower edge of the protruding part, and a ball storage bin ball outlet channel is formed between the rotating plate and the bottom plate; the angle adjuster is arranged between the base plate and the rotating plate and positioned on the ball outlet side, and adjusts the opening angle between the base plate and the rotating plate so as to adjust the opening degree of the ball outlet channel.

Preferably, the device further comprises a length adjusting plate, and the length adjusting plate is connected with the rotating plate in a sliding and adjustable mode through a strip-shaped hole.

Preferably, the angle regulator is a telescopic rod, one end of the telescopic rod is hinged with the base plate, and the other end of the telescopic rod is hinged with the rotating plate.

Preferably, the ball claw mechanism comprises a ball claw and a driving device, the ball claw comprises a rotating shaft and a plurality of comb teeth sheets which are arrayed side by side along the axial direction of the rotating shaft, each comb teeth sheet is arrayed with a plurality of comb teeth along the radial circumference of the comb teeth sheet, each comb tooth is provided with a V-shaped groove for grabbing the grinding ball, and the driving device drives the rotating shaft to rotate; the ball storage bin is provided with a bottom plate, the reversing conveying belt is provided with a ball receiving plate, and comb grooves matched with the comb teeth sheets are formed in the bottom plate and the ball receiving plate.

Preferably, each comb tooth piece is detachably connected with the rotating shaft in a key connection mode, and adjacent comb tooth pieces are spaced through the sleeve.

Preferably, the overturning ball claw mechanism further comprises a limiting device to limit the overturning angle of the overturning ball claw every time; at each limit node, the outer groove edge of the V-shaped groove far away from the rotating shaft is higher than the comb groove on the bottom plate.

Preferably, the reversing conveying belt further comprises a track width adjusting plate, and the track width adjusting plate is parallel to the reversing conveying belt and perpendicular to the conveying surface of the reversing conveying belt; the track width adjusting plate is fixed on the rack through a screw rod, and the extending length of the screw rod is adjusted to adjust the effective width of the conveying surface.

Preferably, the weighing mechanism further comprises a second weighing sensor, the second weighing sensor bears the rack, and the control host acquires a measured value of the second weighing sensor to obtain the grinding ball allowance of the whole machine.

After the technical scheme is adopted, compared with the background art, the utility model, have following advantage:

1. the utility model optimizes the position arrangement of each functional mechanism, and simultaneously sets the reversing conveyor belt, so that the balls grabbed by the ball claws are firstly orderly arranged on the reversing conveyor belt and then orderly output through the conveyor belt, and the equipment structure is more compact;

2. the utility model is provided with the bin gate and the electrically controlled bin gate opening and closing mechanism, thereby effectively preventing burglary;

3. the utility model discloses a ball storage volume on the conveyer belt is weighed to first weighing sensor, can the sensitive control play ball volume, realizes the ration output of ball, adds the ball precision and can reach 0.5%, and it adds the diversification of ball mode simultaneously: a. the ball can be quantitatively fed in time intervals by controlling the timing function of the host machine (such as the interval time of 12-15 minutes or other set time); b. the ball adding amount can also be matched with the ore amount at the right time, for example, the ball adding amount is set according to the ore ball consumption per ton.

4. In the utility model, the base plate is provided with a convex part pointing to the ball storage side, and the convex part is arranged to play a supporting role for the grinding balls; the rotating plate is hinged to the lower edge of the protruding part, plays a role in orderly guiding the grinding balls and adjusting the size of the ball outlet channel, and effectively prevents the grinding balls from being blocked by sharing and orderly guiding the pressure of the grinding balls through the material door;

5. the comb teeth of the turnover ball claw are arranged side by side, so that the turnover ball claw can adapt to various spheres, including hemispheres, and effectively prevents the ball from being blocked; meanwhile, the comb teeth sheets and the rotating shaft are of a split structure, the comb teeth sheets are sleeved on the rotating shaft and are connected through keys, the comb teeth sheets can be formed in a unified mode, and manufacturing cost is low; the separately formed comb teeth sheet has high strength and good fatigue resistance; the comb teeth sheet is easy to repair when damaged; the comb teeth sheet can be replaced according to the actual ball grabbing requirement.

6. The utility model discloses a weighing mechanism still is equipped with the second weighing sensor, and it can obtain the ball surplus of complete machine, through its cooperation with first weighing sensor, more does benefit to the acquisition of various production report information, if: a. the ball amount in the whole machine can be obtained, so that whether to supplement balls in the ball storage bin is determined; b. the ball adding amount of the current shift can be obtained through the first weighing sensor, and the required number of shifts with finished grinding ball consumption and the like can be calculated through the combination of the ball adding amount of the current shift and the ball adding amount; c. through mutual verification of data of the second weighing sensor and the first weighing sensor, whether the grinding ball is stolen or not can be verified; d. the amount of added balls may be calculated over a period of time, such as a day or a month.

Drawings

FIG. 1 is a schematic diagram of the whole machine of the present invention (including a control host);

FIG. 2 is a schematic view of the whole structure of the present invention (hiding the control host and the cover of the door opening and closing mechanism);

FIG. 3 is a detail view at A of FIG. 2;

fig. 4 is a schematic view of the whole structure of the present invention (hidden control host and partial cover plate, without door and door opening/closing mechanism);

fig. 5 is a top view of the whole device of the present invention (hidden control host and partial cover plate, without door and door opening/closing mechanism);

fig. 6 is another schematic structural diagram of the present invention (hidden control host and partial cover plate, without door and door opening/closing mechanism);

FIG. 7 is a schematic view of the bin gate mechanism of the present invention;

FIG. 8 is a schematic view of the turning ball claw of the present invention;

FIG. 9 is a schematic view of the comb teeth sheet of the present invention;

fig. 10 is a schematic view of the limiting device of the present invention;

fig. 11 is another schematic structural diagram of the present invention (hidden control host and partial cover plate, without door and door opening/closing mechanism).

Description of reference numerals:

a frame 1;

a ball storage bin 2, a bin door 21, a bottom plate 22 and a comb groove 221;

the device comprises a bin gate mechanism 3, a base plate 31, an inclined plate 311, a vertical plate 312, a rotating plate 32, an angle adjuster 33, a threaded pipe 331, a through hole 3311, two reverse bolts 332, a length adjusting plate 34 and a loose ball vibration device 35;

the overturning ball claw mechanism 4, the rotating shaft 41, the comb tooth sheet 42, the comb teeth 421, the V-shaped groove 422, the groove edge 4221, the groove edge 4222, the sleeve 43, the motor 44, the chain transmission set 45, the limiting device 46, the travel switch 461, the limiting disc 462 and the limiting groove 4621;

a reversing conveyer belt 5, a ball receiving plate 51, a comb groove 511 and a track width adjusting plate 52;

the weighing mechanism 6, the conveyer belt 61, the first weighing sensor 62, the ball outlet groove 63, the hollow part 631, the ball outlet 632 and the second weighing sensor 64;

the device comprises a bin gate opening and closing mechanism 7, a push-pull device 71, a speed reducing motor 711, a guide rod 712, a screw 713, a screw nut 714, a push block 72, a pair of swing rods 73 and a pair of swing arms 74;

and a control host 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, and are only for convenience of description and simplification of the present invention, but do not indicate or imply that the device or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.

Examples

Referring to fig. 1, 2 and 4, the utility model discloses a mechanical ball feeder, which comprises a frame 1, a ball storage bin 2, a material door mechanism 3, a ball claw turning mechanism 4, a reversing conveyor belt 5, a weighing mechanism 6, a bin door opening and closing mechanism 7 and a control host 8.

Referring to fig. 3, wherein the ball storage bin 2 is used for storing grinding balls, in order to prevent the grinding balls from being stolen, preferably, the ball storage bin 2 is provided with bin gates 21, and the bin gates 21 are a pair and located above the bin opening of the ball storage bin 2 to close the bin opening.

The bin gate opening and closing mechanism 7 comprises a push-pull device 71, a push block 72, a pair of swing rods 73 and a pair of swing arms 74. The push-pull device 71 pushes and pulls the push block 72 to move up and down. One end of each of the pair of swing arms 73 is fixedly connected with the outer edges of the pair of bin gates 21, and the other end is hinged on the rack 1. One end of each of the pair of swing rods 73 is fixedly connected to the hinged end of each of the pair of swing arms 74, and the other end of each of the pair of swing rods 73 is rotatably and slidably connected to the two ends of the push block 72 through the bar-shaped hole 731.

In this embodiment, the push-pull device 71 is a screw driving pair, and includes a speed reduction motor 711, two guide rods 712, a screw 713, and a screw nut 714. The lead screw nut 714 is arranged on the push block 72, the two guide rods 712 guide the push block 72, and the speed reduction motor 711 drives the lead screw 713 to rotate forward and backward so as to drive the push block 72 to move up and down and further drive the swing rod 73. In this embodiment, the swing arm 74 is L-shaped, and swings along the hinge joint thereof under the action of the swing rod 73, so that the opening and closing of the pair of bin doors are realized in a split door manner.

Referring to fig. 4, 5 and 6, the ball storage bin 2 has a bottom plate 22, and one end of the bottom plate 22 away from the ball-turning claw 4 is higher than the end of the bottom plate 22 close to the ball-turning claw 4. The material door mechanism 3 is arranged in the ball storage bin 2 and forms a ball storage bin ball outlet channel with the bottom plate 22 of the ball storage bin 2. The ball claw overturning mechanism 4 is arranged at the ball outlet channel of the ball storage bin to grab the grinding balls. The reversing conveying belt 5 is arranged at the ball unloading end of the turnover ball claw mechanism 4 to receive the grinding balls grabbed by the turnover ball claw mechanism 4, and the conveying direction of the reversing conveying belt is perpendicular to the ball unloading direction of the turnover ball claw mechanism 4.

Specifically, referring to fig. 3 and 4, the gate mechanism 3 includes a base plate 31, a rotating plate 32 and an angle adjuster 33. The base plate 31 is fixed in the ball storage bin 2, the base plate 31 is provided with a convex part pointing to the ball storage side of the ball storage bin 2, the convex part is provided with an inclined plate 311 inclining downwards towards the ball storage side and a vertical plate 312 jointed at the lower edge of the inclined plate 311, and the convex part can play a bearing role on grinding balls. The swivel plate 32 is hinged to the lower edge of the boss, in particular, to the lower edge of the vertical plate 312. The angle adjuster 33 is disposed between the base plate 31 and the rotating plate 32 and on the ball-out side. Thus, a ball outlet channel is formed between the bottom plate 22 and the rotating plate 32, and the opening degree of the ball outlet channel can be adjusted by adjusting the opening angle between the base plate 31 and the rotating plate 32 through the angle adjuster 33.

Referring to fig. 4, in the present embodiment, the angle adjuster 33 is an expansion rod, and includes a threaded tube 331 and two opposite bolts 332, wherein two ends of the threaded tube 331 are provided with opposite threads, one end of each of the two opposite bolts 332 is screwed into the threaded tube 331, and the other end is a hinge joint, so as to realize the hinge joint with the base plate 31/the rotating plate 32.

To facilitate adjustment of the expansion length, a through hole 3311 is formed in the wall of the threaded tube 331 so that a tool (e.g., a screwdriver) can be quickly adjusted by inserting the tool into the through hole 3311.

In order to adjust in multiple dimensions and adapt to the ball output requirements of different ball diameters more flexibly, the gate mechanism 3 further comprises a length adjusting plate 34, the length adjusting plate 34 is mounted on the rotating plate 32, and the length adjusting plate 34 is connected with the rotating plate 32 through a strip-shaped hole in a sliding and adjustable manner.

To further prevent ball blockage, the bin gate mechanism 3 further comprises a loose ball vibration device 35, and the loose ball vibration device 35 is arranged below the bottom plate 22. In this embodiment, the loose ball vibration device 35 is a vibration motor.

Referring to fig. 5 and 6, the flipping claw 4 includes a rotating shaft 41 and a plurality of comb teeth 42 arranged side by side along the axial direction of the rotating shaft 41, and each comb teeth 42 has a plurality of comb teeth 421 arranged along the radial circumference thereof. The inverting conveyor 5 has a ball receiving plate 51, and comb

grooves

221 and 511 corresponding to the respective comb teeth 42 are provided in the bottom plate 22 and the ball receiving plate 51, respectively.

Referring to fig. 6, 7, 8 and 9, each comb-tooth piece 42 is detachably connected to the rotating shaft 41 by a key connection manner, and adjacent comb-tooth pieces 42 are spaced by a sleeve 43. In the present embodiment, the number of teeth of each comb tooth plate 42 is 3. Each comb tooth plate 42 has a V-shaped groove 422 to catch balls, and the number of balls to be caught depends on the length of the groove edge of the V-shaped groove 422 near the rotation shaft (i.e., the groove edge 4221).

The driving device drives the rotating shaft 41 to rotate, and in this embodiment, the driving device includes a motor 44 and a chain transmission set 45.

Referring to fig. 7 and 10, the position-limiting device 46 includes a travel switch 461 and a position-limiting disc 462. The stopper plate 462 is keyed to the rotary shaft 41 to rotate therewith. The outer circumference of the limiting disc 462 is provided with a plurality of limiting grooves 4621, and the roller of the travel switch 461 abuts against the outer circumference of the limiting disc 462. Thus, when the position-limiting plate 462 rotates to the position where the position-limiting groove 4621 is matched with the roller of the travel switch 461, the roller of the travel switch 461 falls into the position-limiting groove 4621 to send a stop signal, thereby limiting the angle of each overturn of the ball-overturning claw. In this embodiment, the number of the limiting grooves 4621 is 4.

In order to prevent the grinding balls from being jammed on the ball-flipping claws to ensure smooth ball catching, at each limit node, the outer groove edge (i.e., the groove edge 4222) of the V-shaped groove 422 far away from the rotating shaft is higher than the comb groove 221 on the bottom plate 22.

Referring to fig. 6 and 11, for the convenience of transportation, the reversing conveyor belt 5 includes a plurality of parallel conveyor chains, and a channel for transporting grinding balls is formed between adjacent conveyor chains. The chain conveying has the advantages that the grinding balls can not roll automatically, and the chain can control the ordered conveying of the grinding balls.

In order to adapt to the size of the grinding balls and to arrange the grinding balls in order, the reversing conveyor belt 5 further comprises a track width adjusting plate 52, and the track width adjusting plate 52 is parallel to the conveying direction of the reversing conveyor belt 5 and is perpendicular to the conveying surface of the reversing conveyor belt 5. The track width adjusting plate is fixed on the frame through a screw 52, and the track width adjusting plate 52 can be moved by adjusting the extending length of the screw 53, so that the effective width of the conveying surface is adjusted.

The weighing mechanism 6 comprises a conveyor belt 61, a first weighing sensor 62, a ball outlet groove 63 and a second weighing sensor 64. The conveyer belt 61 is arranged below the ball falling end of the reversing conveyer belt 5 to receive the grinding balls output by the reversing conveyer belt 5, and the conveying direction of the conveyer belt is vertical to the conveying direction of the reversing conveyer belt 5. The bottom of the ball outlet groove 63 is provided with a hollow part 631 and a ball outlet 632; the conveyer 61 carries the ball discharging groove 63, and the conveying surface thereof is located in the hollow portion 631 of the ball discharging groove 63, so as to convey the received grinding balls to the ball discharging port 632 and output the grinding balls to the ball mill.

First weighing sensor 62 is used for bearing conveyer belt 61 (in this embodiment, first weighing sensor is 2, distributes in the below of the base of conveyer belt 61), so, control host 8 can accurately obtain the ball volume on the conveyer belt 61 through reading first weighing sensor 62's measured value, through the orderly output of conveyer belt, can add the ball to the ball mill in quantitative.

In this embodiment, the conveying belt 61 realizes ordered output through chains, and includes a plurality of conveying chains arranged in parallel, and a channel for conveying grinding balls is formed between adjacent conveying chains.

Second load cells 64 (4 in this embodiment) are provided at four corners of the bottom of the rack 1 for carrying the rack 1. Thus, the control host 8 can obtain the ball amount in the whole machine by reading the measured value of the second weighing sensor 64, thereby determining whether to supplement balls in the ball storage bin 2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. Mechanical type adds ball machine, including the frame, its characterized in that still includes:

2. The mechanical ball feeder of claim 1, wherein: the device also comprises a bin gate and a bin gate opening and closing mechanism; the bin doors are a pair and cover bin openings of the ball storage bins; the bin gate opening and closing mechanism comprises a push-pull device, a push block, a pair of swing rods and a pair of swing arms, the push-pull device pushes and pulls the push block to move up and down, one ends of the swing arms are fixedly connected with the outer edges of the bin gates respectively, the other ends of the swing arms are hinged to the rack, one ends of the swing rods are fixedly connected with the hinged ends of the swing arms respectively, and the other ends of the swing rods are rotatably and slidably connected with the two ends of the push block through strip-shaped holes respectively; the bin doors are driven by the bin door opening and closing mechanism to open and close in a door opening and closing mode.

3. The mechanical ball feeder of claim 1, wherein: the material door mechanism comprises a base plate, a rotating plate and an angle regulator, the base plate is fixed in the ball storage bin, and the base plate is provided with a protruding part pointing to the ball storage bin side; the rotating plate is hinged to the lower edge of the protruding part, and a ball storage bin ball outlet channel is formed between the rotating plate and the bottom plate; the angle adjuster is arranged between the base plate and the rotating plate and positioned on the ball outlet side, and adjusts the opening angle between the base plate and the rotating plate so as to adjust the opening degree of the ball outlet channel.

4. The mechanical ball feeder of claim 3, wherein: still include the length adjusting plate, the length adjusting plate with but connect through bar hole slidable adjustment between the commentaries on classics board.

5. The mechanical ball feeder of claim 3, wherein: the angle regulator is a telescopic rod, one end of the angle regulator is hinged with the base plate, and the other end of the angle regulator is hinged with the rotating plate.

6. The mechanical ball feeder of claim 1, wherein: the turnover ball claw mechanism comprises a turnover ball claw and a driving device, the turnover ball claw comprises a rotating shaft and a plurality of comb tooth sheets which are arrayed side by side along the axial direction of the rotating shaft, each comb tooth sheet is arrayed with a plurality of comb teeth along the radial circumference of the comb tooth sheet, each comb tooth is provided with a V-shaped groove for grabbing a grinding ball, and the driving device drives the rotating shaft to rotate; the ball storage bin is provided with a bottom plate, the reversing conveying belt is provided with a ball receiving plate, and comb grooves matched with the comb teeth sheets are formed in the bottom plate and the ball receiving plate.

7. The mechanical ball feeder of claim 6, wherein: each comb tooth piece passes through the key-type connection mode with the pivot can be dismantled and be connected, passes through the sleeve interval between the adjacent comb tooth piece.

8. The mechanical ball feeder of claim 6, wherein: the overturning ball claw mechanism further comprises a limiting device so as to limit the overturning angle of the overturning ball claw every time; at each limit node, the outer groove edge of the V-shaped groove far away from the rotating shaft is higher than the comb groove on the bottom plate.

9. The mechanical ball feeder of claim 1, wherein: the reversing conveying belt further comprises a track width adjusting plate, and the track width adjusting plate is parallel to the reversing conveying belt and is perpendicular to the conveying surface of the reversing conveying belt; the track width adjusting plate is fixed on the rack through a screw rod, and the extending length of the screw rod is adjusted to adjust the effective width of the conveying surface.

10. The mechanical ball feeder of claim 1, wherein: the weighing mechanism further comprises a second weighing sensor, the second weighing sensor bears the rack, and the control host acquires a measured value of the second weighing sensor to obtain the grinding ball allowance of the whole machine.