Overflow ball mill feeder

Abstract

The utility model relates to an overflow type ball mill feeder, which comprises a feeder main body, the feeder main body comprises an arc-shaped conical section and a cylindrical section, the arc-shaped conical section is provided with a feed port, the inner wall of the arc-shaped conical section is provided with an arc-shaped lining plate, and the inner wall of the cylindrical section is provided with a lower lining plate. The device is simple in structure, economical, durable and convenient to install, has a buffering effect, reduces the replacement frequency and reduces the purchase cost.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dressing and grinding conveying equipment, in particular to an overflow type ball mill feeder. Background Art

[0002] Overflow ball mill is an important equipment of crushing and grinding system in mineral processing plant, which is mainly composed of cylinder, end cover, main bearing, hollow shaft neck, transmission gear and feeder, etc. Overflow ball mill is a kind of crusher, which utilizes the collision between steel ball and material to crush ore. Common feeding method of overflow ball mill is to continuously feed material from the hollow shaft neck at the front end of mill cylinder through feeding pipe, so that large solid material and water are mixed and rushed into the rotating mill from high place to achieve feeding purpose. In the process of ore and water entering mill through feeding pipe, ore, water, grinding medium, etc. are initially mixed in feeding box and then enter into ball mill cylinder. Because of the addition of water and grinding medium, metal tube wall is easily corroded, and cost investment is relatively large. For example, in China utility model patent "A wear-resistant and impact-resistant large overflow ball mill feeding box", announcement number CN213855038U, it is recorded that the feeding box is composed of square flange, feeding box, setting box and The circular flange is a whole, and the ore transportation slope is large, which can effectively reduce the wear of the liner caused by the impact of the ore, and the service life of the liner is longer and the overall bending strength is greater. Although this scheme slows down the discharge speed by increasing the slope, it still adopts the round hopper setting, and the diameter of the lower circular material opening becomes smaller (subject to the design restrictions of the hopper with a square opening at the upper end and a round opening at the lower end), the diameter of the discharge channel becomes smaller, and the discharge port still has a certain impact force, which causes greater wear on the conveying pipe opening at the lower end connection. In addition, most existing conveying pipes use the same diameter material pipe for transportation, which has no buffering effect, resulting in serious wear on the pipe opening, easy to produce gaps, frequent pipeline replacement, and high procurement costs. For example, the Chinese utility model patent "A wet overflow ball mill leak-proof sealing structure", announcement number CN212040765U, uses a feed elbow for connection, that is, a single-caliber pipe. How to reduce the wear of the feeding pipeline saves time and capital investment. Utility Model Content

[0003] The utility model provides an overflow type ball mill feeder which has a simple structure, is economical and durable.

[0004] The specific technical solution of the utility model is an overflow type ball mill feeder, including a feeder body, wherein the feeder body includes an arcuate cone section and a cylindrical section, the arcuate cone section has a feed port, the inner wall of the arcuate cone section is installed with an arcuate lining plate, and the inner wall of the cylindrical section is installed with a lower lining plate.

[0005] Furthermore, preferably, the feeder body is made of 20 mm thick steel plate, the flange is machined on a lathe, holes are drilled on a drilling machine, and the whole is welded.

[0006] Furthermore, preferably, a flange is provided on the feed port.

[0007] Furthermore, preferably, three arc-shaped lining plates are provided, which cover the entire inner wall of the arc-shaped cone section.

[0008] Furthermore, preferably, the lower lining plate is composed of two semi-arc lining plates.

[0009] Furthermore, preferably, the diameter of the cylindrical section is 1.5 m.

[0010] Further, preferably, the feed port diameter is 265 mm.

[0011] Furthermore, preferably, the wall thickness of the feeder body is 20 mm.

[0012] The utility model has the following beneficial effects: simple structure, economical and durable, convenient installation, buffering effect, reduced replacement times and lower purchase cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 A half-section diagram of the utility model;

[0016] Figure 4 This is a view of three arc-shaped lining plates of the utility model along the feeding direction;

[0017] Figure 5 This is a view of the lower lining plate of the utility model along the feeding direction;

[0018] Figure 6 This is a reference diagram for the installation of the utility model.

[0019] In the figure: 1-feeder body, 101-arc cone section, 102-cylindrical section, 2-feeding port, 3-flange, 4-arc lining plate, 5-lower lining plate, 501-semi-arc lining plate, 10-feeding box. DETAILED DESCRIPTION

[0020] In order to make the technical problems and technical solutions solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 Figure 2 As shown, an overflow type ball mill feeder includes a feeder body 1, which includes an arcuate cone section 101 and a cylindrical section 102. The feeder body is made of 20 mm thick steel plate, the flange is turned by a lathe, holes are drilled by a drilling machine, and the whole is welded. The cylindrical section 102 is welded by two semicircular covers, and the arcuate cone section 101 is welded by fan-shaped arc surfaces. It has a simple structure and saves time and capital investment.

[0024] The arc-shaped cone section 101 is provided with a feed port 2, and a flange 3 is provided on the feed port 2, which is connected to the flange of the circular feed port at the lower end of the feed box 10 through the flange 3. Figure 6 As shown, it is ensured that the feed box 10 smoothly enters the feeder body 1.

[0025] like Figure 3 and Figure 4 As shown, an arc-shaped lining plate 4 is installed on the inner wall of the arc-shaped cone section 101 , and there are three arc-shaped lining plates 4 , which cover the entire inner wall of the arc-shaped cone section 101 .

[0026] The inner wall of the cylindrical section 102 is installed with a lower lining plate 5 , and the lower half of the cylindrical section 102 is installed with a lower lining plate 5 .

[0027] The lower lining plate 5 is composed of two semi-arc lining plates 501, such as Figure 3 and Figure 5As shown, the liner is installed by welding or bolts, which is a common installation method for ore conveying equipment. Of course, in this implementation, in order to save costs, only the lower liner 5 is added to the lower part of the inner wall of the cylindrical section 102. In actual use, technical personnel in this field can also add a semicircular liner to the upper part of the inner wall of the cylindrical section 102 as needed, which is also within the scope of protection of the claims of the present utility model.

[0028] like Figure 6 As shown, the ore slurry entering from the circular material port at the lower end of the feed box 10 quickly enters the feeder body 1 from the feed port 2. After passing through the arc-shaped cone section 101, because the diameter of the conveying channel becomes wider and the slurry channel space becomes larger, the entering slurry will be dispersed and the slurry flow rate will be reduced, which has a buffering effect. At the same time, the arc-shaped lining plate 4 and the semicircular lower lining plate 5 made of wear-resistant material can effectively protect the inner wall part of the pipeline body with a larger flow rate. The subsequent maintenance can be completed by replacing the lining plate, reducing the number of times the feeder body 1 is replaced as a whole, saving time and capital investment.

[0029] The diameter of the cylindrical section 102 is 1.5 m, and the diameter of the feed port 2 is 200-265 mm.

[0030] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above, and any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An overflow type ball mill feeder, comprising a feeder body (1), characterized in that: The feeder body (1) comprises an arcuate cone section (101) and a cylindrical section (102); the arcuate cone section (101) is provided with a feed port (2); an arcuate lining plate (4) is installed on the inner wall of the arcuate cone section (101); and a lower lining plate (5) is installed on the inner wall of the cylindrical section (102).

2. An overflow ball mill feeder according to claim 1, characterized in that: The feed inlet (2) is provided with a flange (3).

3. An overflow ball mill feeder according to claim 1, characterized in that: The arc-shaped lining plates (4) are provided in three pieces, and they cover the inner wall of the entire arc-shaped cone section (101).

4. An overflow ball mill feeder according to claim 1 or 3, characterized in that: The lower lining plate (5) is composed of two semi-arc lining plates (501).

5. The overflow ball mill feeder according to claim 1, characterized in that: The cylindrical section (102) has a diameter of 1.5 m.

6. An overflow ball mill feeder according to claim 1, characterized in that: The feed port (2) has a diameter of 200-265 mm.

7. The overflow ball mill feeder according to claim 1, characterized in that: The wall thickness of the feeder body (1) is 20 mm.

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