Semi-autogenous grinding ball adding device and semi-autogenous grinding equipment

Abstract

The utility model discloses a semi-autogenous grinding ball adding device and semi-autogenous grinding equipment, and the semi-autogenous grinding ball adding device comprises a conveying device which comprises a conveying chain and a roller used for supporting the conveying chain, and the conveying chain comprises a preset number of chain links; chain plates are arranged on the chain links, and concave structures matched with the steel balls are formed in the chain plates; the driving mechanism is in driving connection with the roller and used for driving the roller to rotate so as to drive the conveying chain to act; and the ball box is used for accommodating the steel balls and enabling the steel balls to fall into the concave structures of the chain plates. The steel balls are guided by the ball box to fall into the concave structure of the conveying chain of the conveying device, so that the chain plate on each chain link correspondingly supports and accommodates one steel ball, and as the number of the chain links is determined, the conveying distance of the conveying chain can be accurately controlled by the driving mechanism according to actual requirements, so that the ball adding number is accurately controlled; and on the basis, accurate automatic ball feeding control can be achieved, manual operation is reduced, deviation of the ball feeding amount is avoided, and the ore grinding effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-autogenous grinding, in particular to a semi-autogenous grinding and ball adding device. In addition, the utility model also relates to a semi-autogenous grinding equipment comprising the semi-autogenous grinding and ball adding device. Background Art

[0002] Grinding is an extremely important part of the entire mineral processing process. Grinding energy consumption and auxiliary material consumption account for a large proportion of the total production cost of mineral processing. With the development of grinding technology, the SABC crushing and grinding process has been widely used. Among them, the semi-autogenous mill in the SABC crushing and grinding process has strong adaptability to changes in ore properties, especially for some mines with complex geological types, and can achieve better processing effects. Generally, the semi-autogenous mill adds forged balls with a diameter of 100mm-150mm, lifts the steel balls to a certain height through the semi-autogenous mill cylinder, and uses the kinetic energy of the steel balls to break and grind the ore.

[0003] In the production process, adding steel balls to the SAG mill through an automatic ball adding machine can not only improve the accuracy of steel ball adding, improve grinding efficiency, reduce energy consumption, but also help to extend the service life of the mill. However, due to the large mass of SAG steel balls, the SAG ball adding machine is prone to jamming and blocking during the ball adding process, and although the amount of added balls can be basically matched, it cannot be accurately controlled. Utility Model Content

[0004] The utility model provides a semi-autogenous grinding and ball adding device and semi-autogenous grinding equipment to solve the technical problem that the existing semi-autogenous grinding and ball adding machine cannot be accurately controlled.

[0005] According to one aspect of the utility model, a semi-autogenous grinding and ball adding device is provided, comprising:

[0006] The conveying device comprises a conveying chain and a roller for supporting the conveying chain, wherein the conveying chain comprises a preset number of chain links; a chain plate is arranged on the chain link, and an inner concave structure matching with a steel ball is provided on the chain plate;

[0007] A driving mechanism, drivingly connected to the roller, for driving the roller to rotate so as to drive the conveyor chain to move;

[0008] The ball box is used for accommodating the steel balls and for making the steel balls fall into the concave structure of the chain plate.

[0009] As a further improvement of the above technical solution, a ball placing opening with a preset length is provided at the bottom of the ball box, and the width of the ball placing opening matches the diameter of the steel ball.

[0010] As a further improvement of the above technical solution, the ball box includes a guiding structure connected to the ball release port, which is used to guide the steel balls in the ball box to the ball release port.

[0011] As a further improvement of the above technical solution, the ball box is conical, and includes a first vertical surface connected to the ball release port, a second vertical surface, a first guide surface, and a second guide surface.

[0012] As a further improvement of the above technical solution, the ball release port and the bottom of the concave structure of the conveying device have a preset distance, and the preset distance is larger than the diameter of the steel ball and smaller than the sum of the diameters of the two steel balls.

[0013] As a further improvement of the above technical solution, the semi-autogenous grinding and ball adding device also includes a base used as a bottom support and a support frame arranged on the base and used as a carrier, and the conveying device and the driving mechanism are installed on the support frame.

[0014] As a further improvement of the above technical solution, support wheels for supporting the conveyor chain are evenly distributed between the two rollers on the support frame.

[0015] As a further improvement of the above technical solution, the semi-autogenous grinding and ball adding device also includes a tensioning device connected to at least one of the rollers, and the tensioning device is arranged on the support frame.

[0016] As a further improvement of the above technical solution, the tensioning device includes a support seat arranged on the support frame and a force-bearing plate fixedly connected to the roller, the support seat is penetrated by a guide rod connected to the force-bearing plate, and the guide rod is sleeved with springs respectively abutting against the support seat and the force-bearing plate.

[0017] According to another aspect of the utility model, a semi-autogenous grinding device is also provided, which comprises the above-mentioned semi-autogenous grinding and ball adding device.

[0018] The utility model has the following beneficial effects:

[0019] The semi-autogenous grinding and adding ball device comprises a ball box accommodating a large number of semi-autogenous grinding steel balls, and the ball box guides the steel balls to fall into the concave structure of the conveying chain of the conveying device, so that the chain plate on each chain link supports and accommodates a steel ball accordingly. Since the number of chain links is determined, the conveying distance of the conveying chain can be accurately controlled by the driving mechanism according to actual needs, thereby accurately controlling the number of added balls, and based on this, accurate automatic ball adding control can be achieved, manual operation can be reduced, deviation in the amount of added balls can be avoided, and the grinding effect can be improved.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of a semi-autogenous grinding and ball adding device of a preferred embodiment of the utility model;

[0023] Figure 2 It is a front view of a semi-autogenous grinding and ball adding device according to a preferred embodiment of the utility model.

[0024] Legend:

[0025] 1. chain plate 10, concave structure 2, chain link 3, roller 4, tensioner 401, support seat 402, spring 404, force plate 5, support frame 6, support wheel 7, drive mechanism 8, base 9, transmission mechanism 11, steel ball 12, ball box 121, first guide surface 122, second guide surface 123, first vertical surface 124, second vertical surface. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0027] Figure 1 It is a structural schematic diagram of a semi-autogenous grinding and ball adding device of a preferred embodiment of the utility model; Figure 2 It is a front view of a semi-autogenous grinding and ball adding device according to a preferred embodiment of the utility model.

[0028] like Figure 1 and Figure 2 As shown, the semi-autogenous grinding and ball adding device of this embodiment comprises:

[0029] The conveying device includes a conveying chain and a roller 3 for supporting the conveying chain, wherein the conveying chain includes a preset number of chain links 2; a chain plate 1 is arranged on the chain link 2, and an inner concave structure 10 matching with a steel ball 11 is provided on the chain plate 1;

[0030] The driving mechanism 7 is connected to the roller 3 and is used to drive the roller 3 to rotate so as to drive the conveyor chain to move;

[0031] The ball box 12 is used to accommodate the steel ball 11 and to allow the steel ball 11 to fall into the concave structure 10 of the chain plate 1 .

[0032] The semi-autogenous grinding and ball adding device is provided with a control element, which is implemented based on the PLC controller of the prior art, and calculates the actual required ball adding amount according to the semi-autogenous grinding amount fed back by the existing semi-autogenous grinding equipment in actual application and the feedback signal of the monitoring system of the grinding machine, and controls the start and stop of the driving mechanism 7 to realize automatic ball adding; the driving mechanism 7 is a motor, which is connected to the drum through a transmission mechanism 9 such as a reducer;

[0033] It should be noted that the diameter of the semi-self-grinding steel ball 11 is 100mm-150mm, and the inner concave structure 10 is arc-shaped or concave spherical, and the arc can be slightly larger than the semi-self-grinding steel ball 11, so that the semi-self-grinding steel ball 11 just falls into the inner concave structure 10 and can only accommodate one steel ball 11;

[0034] It can be understood that the semi-autogenous grinding and adding ball device comprises a ball box 12 accommodating a large number of semi-autogenous grinding steel balls 11, and the ball box 12 guides the steel balls 11 to fall into the concave structure 10 of the conveying chain of the conveying device, so that the chain plate 1 on each chain link 2 supports and accommodates a steel ball 11. Since the number of chain links 2 is determined, the driving mechanism 7 can accurately control the conveying distance of the conveying chain according to actual needs, thereby accurately controlling the number of balls added, and based on this, accurate automatic ball adding control can be achieved, thereby reducing manual operation and avoiding deviation in the amount of ball added, thereby improving the grinding effect.

[0035] In one embodiment, a ball release port with a preset length is provided at the bottom of the ball box 12, and the ball release port is located above the conveying chain, and the width of the ball release port matches the diameter of the steel balls 11; by limiting the width of the ball release port, the steel balls 11 are arranged in a single row and fall out of the ball release port into the concave structure 10, so that a single row of precise number of balls can be added, wherein the ball release port and the bottom of the concave structure 10 of the conveying device have a preset spacing, and the preset spacing is greater than the diameter of the steel ball 11 and less than the sum of the diameters of the two steel balls 11, that is, when there are steel balls 11 in the concave structure 10, the steel balls 11 in the ball box 12 cannot continue to fall out, and the setting of the preset spacing and the limitation of the width can greatly reduce the contact area between the steel balls 11 in the conveying state in the concave structure 10 and the steel balls 11 in the ball box 12, and effectively improve the stress condition, avoid stagnation, blockage, etc., and make the ball addition and transportation smoother;

[0036] Furthermore, the ball box 12 includes a guide structure connected to the ball release port, which is used to guide the steel balls 11 in the ball box 12 to the ball release port, and the ball box 12 falls out of the ball release port through the setting of the guide structure and the action of gravity;

[0037] Among them, the ball box 12 of this embodiment is conical, and the ball box 12 includes a first vertical surface 123 connected to the ball release port, a second vertical surface 124, a first guide surface 121 and a second guide surface 122; the two adjacent vertical surfaces can ensure that the ball box 12 has a larger accommodating space, and the two adjacent guide surfaces can ensure that the steel balls 11 in the ball box 12 are guided to the position of the ball release port, while avoiding the steel balls 11 in the ball box 12 from getting stuck or blocked.

[0038] In this embodiment, the semi-autogenous grinding and ball adding device further comprises a base 8 used as a bottom support and a support frame 5 arranged on the base 8 and used as a carrier, and the conveying device and the driving mechanism 7 are installed on the support frame 5;

[0039] Among them, support wheels 6 for supporting the conveyor chain are evenly distributed between the two rollers 3 on the support frame 5 to ensure the stability of the structure;

[0040] In one embodiment, the semi-autogenous grinding and ball adding device further comprises a tensioning device 4 connected to at least one roller 3, the tensioning device 4 being arranged on a support frame 5, and the tensioning device 4 is used to maintain a force in a distal direction on one of the rollers 3 to achieve tensioning of the conveyor chain;

[0041] Among them, the tensioning device 4 includes a support seat 401 arranged on the support frame 5 and a force plate 404 fixedly connected to the roller 3. The support seat 401 is penetrated by a guide rod connected to the force plate 404, and the guide rod and the support seat 401 are fixedly connected; a spring 402 is sleeved on the guide rod and respectively abuts against the support seat 401 and the force plate 404. The force plate 404 is continuously compressed, and the elastic force of the spring 402 acts on the roller 3 to keep it tensioned.

[0042] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A semi-autogenous grinding and ball adding device, characterized in that: include: A conveying device comprises a conveying chain and a roller (3) for supporting the conveying chain, wherein the conveying chain comprises a preset number of chain links (2); a chain plate (1) is arranged on the chain link (2), and an inner concave structure (10) matching a steel ball (11) is provided on the chain plate (1); A driving mechanism (7) is connected to the roller (3) and is used to drive the roller (3) to rotate so as to drive the conveyor chain to move; The ball box (12) is used to accommodate the steel ball (11) and to allow the steel ball (11) to fall into the concave structure (10) of the chain plate (1).

2. The semi-autogenous grinding and ball adding device according to claim 1, characterized in that: The bottom of the ball box (12) is provided with a ball placement opening with a preset length, and the width of the ball placement opening matches the diameter of the steel ball (11).

3. The semi-autogenous grinding and ball adding device according to claim 2, characterized in that: The ball box (12) comprises a guide structure connected to the ball release port, which is used to guide the steel balls (11) in the ball box (12) to the ball release port.

4. The semi-autogenous grinding and ball adding device according to claim 3 is characterized in that: The ball box (12) is conical and comprises a first vertical surface (123) connected to the ball release port, a second vertical surface (124), a first guide surface (121) and a second guide surface (122).

5. The semi-autogenous grinding and ball adding device according to any one of claims 2 to 4, characterized in that: The ball release port and the bottom of the concave structure (10) of the conveying device have a preset distance, and the preset distance is greater than the diameter of the steel ball (11) and less than the sum of the diameters of the two steel balls (11).

6. The semi-autogenous grinding and ball adding device according to claim 1, characterized in that: The semi-autogenous grinding and ball adding device further comprises a base (8) used as a bottom support and a support frame (5) arranged on the base (8) and used as a carrier, and the conveying device and the driving mechanism (7) are installed on the support frame (5).

7. The semi-autogenous grinding and ball adding device according to claim 6, characterized in that: Support wheels (6) for supporting the conveyor chain are evenly distributed on the support frame (5) between the two rollers (3).

8. The semi-autogenous grinding and ball adding device according to claim 6, characterized in that: The semi-autogenous grinding and ball adding device further comprises a tensioning device (4) connected to at least one of the rollers (3); the tensioning device (4) is arranged on the supporting frame (5).

9. The semi-autogenous grinding and ball adding device according to claim 8, characterized in that: The tensioning device (4) comprises a support seat (401) arranged on the support frame (5) and a force-bearing plate (404) fixedly connected to the roller (3); the support seat (401) is provided with a guide rod connected to the force-bearing plate (404); and the guide rod is sleeved with a spring (402) respectively abutting against the support seat (401) and the force-bearing plate (404).

10. A semi-autogenous grinding device, characterized in that: The semi-autogenous grinding and ball adding device according to any one of claims 1 to 9 is used.

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