Ball feeding device of ball mill

Abstract

The utility model discloses a ball feeding device of a ball mill, which comprises a weighing hopper, a ball feeding pipe and a plurality of steel ball storage tanks, the outlet of each steel ball storage tank is respectively provided with a discharge gate valve, the outlet of each steel ball storage tank is communicated with the inlet of the weighing hopper, the outlet of the weighing hopper is communicated with the inlet of the ball feeding pipe, and the ball feeding pipe is communicated with the discharge gate valve. An outlet of the ball feeding pipe is communicated with the middle top end of a feeding chute of the ball mill. The steel ball feeding device has the advantages that the steel ball storage box and the weighing hopper are arranged, and the outlet of the weighing hopper is communicated with the feeding chute of the ball mill through the ball feeding pipe, so that automatic mixing of steel balls can be realized, the added steel balls and materials enter the ball mill through the feeding chute together, stopping for feeding is not needed, on one hand, online ball feeding is realized, and the ball milling efficiency is improved; on the other hand, repeated shutdown for ball feeding is not needed, and the service life of equipment is prolonged.

Description

Technical field:

[0001] The utility model relates to the technical field of ball mills, in particular to a ball adding device for a ball mill. Background technology:

[0002] The wet ball mill is a mechanical device that continues to grind and pulverize materials after mixing water with the crusher, aiming to obtain finer particles required by the process. The characteristics of the ball mill are that the steel balls and materials roll simultaneously in the closed cylinder, and finer particles are obtained by knocking and colliding. However, the steel balls will be lost due to wear over time and need to be added. The ball mill needs to be stopped, the ball adding port on the wall of the ball mill cylinder needs to be turned upward, and then the bolts fastening the ball adding cover are loosened and the cover is opened for adding. This process is an aerial operation and poses a great safety hazard. In addition, the machine needs to be stopped when adding balls, and it is impossible to add balls during the ball milling process. Therefore, in the process of grinding the same batch of materials, if you want to control the grinding particle size, you need to frequently stop the machine-add balls-restart. On the one hand, it is time-consuming and labor-intensive to affect the grinding efficiency of the ball mill. On the other hand, frequent start-stop will affect the service life of the ball mill. Utility model content:

[0003] The utility model aims to provide a ball adding device for a ball mill.

[0004] The utility model is implemented by the following technical scheme: a ball adding device for a ball mill, which comprises a weighing hopper, a ball adding tube and a plurality of steel ball reserve boxes, wherein a discharge gate valve is installed at the outlet of each of the steel ball reserve boxes, and the outlet of the steel ball reserve box is connected with the inlet of the weighing hopper, the outlet of the weighing hopper is connected with the inlet of the ball adding tube, and the outlet of the ball adding tube is connected with the middle top of the feeding chute of the ball mill.

[0005] Furthermore, the weighing sensor of the weighing hopper is connected to the input end of the controller, and the output end of the controller is respectively connected to each of the discharge gate valves and the discharge valve of the weighing hopper.

[0006] The advantages of the utility model are as follows: by setting a steel ball storage box and a weighing hopper, and connecting the outlet of the weighing hopper with the feeding chute of the ball mill through a ball adding pipe, the automatic mixing of the steel balls can be realized, and the added steel balls enter the ball mill through the feeding chute together with the materials, without stopping the machine for feeding. On the one hand, online ball addition is realized, which improves the ball milling efficiency; on the other hand, there is no need to stop the machine repeatedly for adding balls, which prolongs the service life of the equipment. In addition, the steel balls enter through the top of the feeding chute, and the materials at the bottom of the feeding chute can be used to buffer the steel balls, and at the same time, the materials can be pre-milled, further improving the ball milling efficiency. Description of the drawings:

[0007] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0008] Weighing hopper 1, weighing sensor 11, discharge valve 12, ball adding tube 2, steel ball storage box 3, discharge gate valve 4, feeding chute 5, controller 6, ball mill 7. Specific implementation method:

[0009] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0010] like Figure 1 As shown, a ball adding device for a ball mill comprises a weighing hopper 1, a ball adding tube 2 and a plurality of steel ball reserve boxes 3, a discharge gate valve 4 is installed at the outlet of each steel ball reserve box 3, and the outlet of the steel ball reserve box 3 is connected to the inlet of the weighing hopper 1, the outlet of the weighing hopper 1 is connected to the inlet of the ball adding tube 2, and the outlet of the ball adding tube 2 is connected to the middle top of the feeding chute 5 of the ball mill 7. The weighing sensor 11 of the weighing hopper 1 is connected to the input end of the controller 6, and the output end of the controller 6 is respectively connected to each discharge gate valve 4 and the discharge valve 12 of the weighing hopper 1. The weighing sensor 11 transmits the detected weight information to the controller 6, and controls the opening and closing of each discharge gate valve 4 and the discharge valve 12 according to the weight information received by the controller 6.

[0011] In this embodiment, a total of four steel ball reserve boxes 3 are provided for storing steel balls of four specifications with diameters of 50 mm, 60 mm, 70 mm and 80 mm respectively; and the total weight of the steel balls required to be added to the weighing hopper 1 is set according to process requirements. When it is necessary to add steel balls, first open the discharge gate valve 4 at the bottom of the first steel ball reserve box 3, so that the steel balls with a diameter of 50 mm are added to the weighing hopper 1. At this time, the weighing hopper 1 is full of 50 mm steel balls. When the weighing sensor 11 detects that the weight of the added steel balls reaches the amount of 50 mm steel balls that need to be added, close the discharge gate valve 4 at the bottom of the first steel ball reserve box 3; then, open the discharge gate valve 4 at the bottom of the second steel ball reserve box 3, so that the steel balls with a diameter of 60 mm are added to the weighing hopper 1. At this time, the weighing hopper 1 contains 50 mm and 60 mm steel balls. When the weighing sensor 11 detects that the weight of the steel balls inside it is the total weight of the two steel balls that need to be added, close the discharge gate valve 4 at the bottom of the second steel ball reserve box 3. And so on, the addition of 70 mm and 80 mm steel balls is completed. After all the steel balls of all specifications have been added, the total weight set in the weighing hopper 1 is reached, and the discharge valve 12 is opened. The steel balls in the weighing hopper 1 enter the feeding chute 5 through the ball adding pipe 2 and enter the ball mill 7 together with the materials.

[0012] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A ball mill adding device, characterized in that: It includes a weighing hopper, a ball adding tube and a plurality of steel ball reserve boxes. A discharge gate valve is installed at the outlet of each of the steel ball reserve boxes, and the outlet of the steel ball reserve box is connected to the inlet of the weighing hopper, the outlet of the weighing hopper is connected to the inlet of the ball adding tube, and the outlet of the ball adding tube is connected to the middle top of the feeding chute of the ball mill; the weighing sensor of the weighing hopper is connected to the input end of the controller, and the output end of the controller is respectively connected to each of the discharge gate valves and the discharge valve of the weighing hopper.

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