Scraper device of flotation machine

Abstract

The utility model discloses a scraper device of a flotation machine, and relates to the technical field of preparation equipment. The device structurally comprises a crankshaft, a scraper blade, a separation guide groove, a side bracket and a mounted bearing, the separation guide groove is installed between the lower ends of the two side supports in a vertically adjustable mode through a plurality of first bolts. The two side supports are each provided with a mounted bearing through four second bolts. The two crankshafts are mounted on the two mounted bearings; and the scraper is mounted on the crankshaft in a hanging manner. The device effectively improves the pushing efficiency of the bubble layer, ensures the stable and reliable installation of the scraper blade, can accurately adjust the position of the scraper blade to enhance the process adaptability, has a reasonable structural layout to facilitate installation and maintenance, and is provided with reliable anti-separation measures to ensure the safe operation. Therefore, the flotation effect is improved, the equipment failure rate is reduced, the production stability is improved, and the like.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing equipment technology, and in particular relates to a scraper device for a flotation machine. Background Technology

[0002] As a key piece of equipment in the coal flotation process, the performance of the scraper device in the flotation machine has a crucial impact on the flotation effect. However, there are some problems with the existing scraper devices in flotation machines that urgently need to be addressed.

[0003] Existing flotation machine scraper devices mostly employ a circular motion mechanism. Under this motion mode, the scraper's ability to push the bubble layer is significantly insufficient. Firstly, due to the characteristics of circular motion, the distance the scraper pushes the bubble layer during a single motion is relatively limited. Secondly, the horizontal displacement of the scraper's trajectory during circular motion is short, failing to effectively separate the slurry from the bubbles, thus limiting flotation efficiency and consequently affecting the yield and quality of clean coal.

[0004] On the other hand, this circular motion results in varying depths to which the scraper pushes the bubble layer. During the scraper's movement, the pushing force varies at different points of contact with the bubble layer, leading to better bubble layer pushing in some areas and poorer pushing in others. This not only causes uneven bubble layer pushing, affecting the stability of flotation results, but may also lead to insufficient separation of pulp and bubbles in some areas, further reducing flotation efficiency.

[0005] In summary, existing flotation machine scraper devices, which are mainly based on circular motion, have limited bubble layer pushing distance and varying pushing depths. In order to develop the flotation process and further improve production efficiency, it is urgent to innovate and improve the flotation machine scraper device. Utility Model Content

[0006] The purpose of this utility model is to provide a flotation machine scraper device, in which a scraper mounted on a crankshaft moves linearly within the separation guide channel, and the bottom of the scraper pushes the bubble layer horizontally a long distance along the channel of the separation guide channel.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a flotation machine scraper device, comprising a crankshaft, a scraper, a separation guide groove, side supports, and a bearing with a mounting seat; the separation guide groove is installed between the lower ends of the two side supports in an adjustable manner by a number of first bolts; a bearing with a mounting seat is installed on each of the two side supports by four second bolts; the two crankshafts are mounted on the two bearings with mounting seats; and the scraper is mounted on the crankshaft.

[0009] As a preferred embodiment of this utility model, the crankshaft includes two short shafts at both ends that are connected and fitted with the bearing with a seat; a cylindrical plate is fixed to the inner side of each of the two short shafts; a cylindrical rod is fixed between the two cylindrical plates, and the axis of the cylindrical rod is flush with the axis of the short shaft.

[0010] As a preferred technical solution of this utility model, the separation guide groove includes two first rectangular vertical plates arranged in parallel; a U-shaped flat plate is fixed between the lower ends of the two first rectangular vertical plates and their corresponding inner walls; and two rows of first threaded through holes arranged in the horizontal direction are opened on the first rectangular vertical plates.

[0011] As a preferred embodiment of this utility model, the side support includes a second rectangular upright plate; a mounting plate is vertically fixed to the outer side of the second rectangular upright plate; the mounting plate has a plurality of first oval through holes; the mounting plate has four second threaded through holes that mate with bearing seats; a rectangular channel is formed on the inner side of the lower half of the second rectangular upright plate; the depth of the rectangular channel is the same as the thickness of the first rectangular upright plate; and a row of second oval through holes arranged horizontally is formed on the rectangular channel.

[0012] As a preferred embodiment of this utility model, the scraper includes a rectangular scraper, and the lower end of the rectangular scraper is set as an arc end face; three hook plates that are connected to the cylindrical rod are fixed on the upper half of one side surface of the rectangular scraper.

[0013] As a preferred embodiment of this utility model, the end of the hook plate near the hook is threadedly connected with a third bolt.

[0014] This utility model has the following beneficial effects:

[0015] This invention utilizes a scraper mounted on a crankshaft that moves linearly within the separation guide channel. The bottom of the scraper pushes the bubble layer horizontally a long distance along the channel. Compared to the short-distance or irregular movement of traditional scraper devices, this design significantly increases the amount of bubbles pushed in a single scraping motion. Simultaneously, the separation guide channels and side supports on both sides of the scraper impede overflow at the side ends, thereby improving the efficiency of a single scraping motion. This helps to more effectively separate the slurry and bubbles, enhancing the flotation effect.

[0016] The hook plate on the scraper of this utility model is connected to the cylindrical rod, and a third bolt is threaded through the end of the hook plate near the hook. This effectively ensures the stability of the scraper rotating on the cylindrical rod, prevents the scraper from moving around on the cylindrical rod and hitting the separation guide groove, ensures the stable operation of the scraper device, and reduces equipment failure and maintenance costs.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the structure of the scraper device for the flotation machine of this utility model.

[0020] Figure 2 This is a schematic diagram of the crankshaft and scraper of the flotation machine scraper device under another state.

[0021] Figure 3 This is a schematic diagram of the crankshaft.

[0022] Figure 4 This is a schematic diagram of the separation guide groove.

[0023] Figure 5 This is a schematic diagram of the side support structure.

[0024] Figure 6 This is a schematic diagram of the scraper's structure.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1-Crankshaft, 2-Separation guide groove, 3-Side bracket, 4-Scraper, 5-Bearing with seat, 11-Short shaft, 12-Oval plate, 13-Cylindrical rod, 21-First rectangular vertical plate, 22-U-shaped flat plate, 23-First threaded through hole, 31-Second rectangular vertical plate, 32-Mounting and fixing plate, 33-First oval through hole, 34-Second threaded through hole, 35-Rectangular channel, 36-Second oval through hole, 41-Rectangular scraper, 42-Hook plate, 43-Third bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Specific Implementation Example 1:

[0029] Please see Figure 1-6As shown, this utility model is a scraper device for a flotation machine, including a crankshaft 1, a scraper 4, a separation guide trough 2, side supports 3, and seated bearings 5. The separation guide trough 2 is vertically adjustable between the lower ends of the two side supports 3 by several first bolts. Each of the two side supports 3 is equipped with a seated bearing 5 by four second bolts. The two crankshafts 1 are mounted on the two seated bearings 5. The scraper 4 is mounted on the crankshaft 1.

[0030] The crankshaft 1 includes two short shafts 11 at both ends, which are connected and fitted with bearings 5. A cylindrical plate 12 is fixed to the inner end of each of the two short shafts 11. A cylindrical rod 13 is fixed between the two cylindrical plates 12, and the axis of the cylindrical rod 13 is flush with the axis of the short shafts 11. The scraper 4 includes a rectangular scraper 41, with its lower end set as an arc end face. Three hook plates 42 are fixed to the upper half of one side of the rectangular scraper 41, which are hooked to the cylindrical rod 13. The distance between the two hook plates 42 at both ends and their outer walls is less than the length of the cylindrical rod 13, but the difference is no more than 2mm, effectively ensuring the stability of the scraper 4's rotation while mounted on the cylindrical rod 13 and preventing the scraper 4 from shifting and impacting the separation guide groove 2 on the cylindrical rod 13.

[0031] The separation guide trough 2 includes two parallel first rectangular vertical plates 21. A U-shaped flat plate 22 is fixed between the lower ends of the two first rectangular vertical plates 21 relative to their inner walls. Two rows of horizontally arranged first threaded through holes 23 are provided on the first rectangular vertical plates 21. The distance between the two ends of the rectangular scraper 41 and the corresponding first rectangular vertical plate 21 is 2-5 mm. When installing the flotation machine scraper device of this embodiment, the upper surface of the U-shaped flat plate 22 is placed 2-5 mm above the liquid surface of the flotation tank.

[0032] An external power source provides rotational power to the crankshaft 1, and the rotation of the crankshaft 1 drives the scraper 4 to move. For example... Figure 1-2 As shown, when the scraper 4 is within the range of the separation guide groove 2, the bottom of the scraper 4 pushes the bubble layer horizontally and long distance along the channel of the separation guide groove 2, thereby increasing the amount of bubbles pushed by a single scraping motion and improving the efficiency of a single scraping motion.

[0033] The side support 3 includes a second rectangular upright plate 31. A mounting plate 32 is vertically fixed to the outer side of the second rectangular upright plate 31. The mounting plate 32 has several first oblong through holes 33. The mounting plate 32 also has four second threaded through holes 34 that mate with the bearing 5. A rectangular channel 35 is formed on the inner side of the lower half of the second rectangular upright plate 31. The depth of the rectangular channel 35 is the same as the thickness of the first rectangular upright plate 21. A row of second oblong through holes 36 arranged horizontally is formed on the rectangular channel 35.

[0034] To prevent the scraper 4 from detaching from the crankshaft 1, a third bolt 43 is threaded through the end of the hook plate 42 near the hook.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A scraper device for a flotation machine, characterized in that: Includes crankshaft (1), scraper (4), separation guide groove (2), side bracket (3) and seated bearing (5); The separation guide groove (2) is installed between the lower ends of the two side brackets (3) by means of several first bolts that can be adjusted up and down; Each of the two side brackets (3) is equipped with a bearing (5) by four second bolts; the two crankshafts (1) are mounted on the two bearings (5); The scraper (4) is mounted on the crankshaft (1).

2. The flotation machine scraper device according to claim 1, characterized in that, The crankshaft (1) includes two short shafts (11) at both ends that are connected and fitted with the bearings (5); a cylindrical plate (12) is fixed to the inner side of each of the two short shafts (11); a cylindrical rod (13) is fixed between the two cylindrical plates (12), and the axis of the cylindrical rod (13) is flush with the axis of the short shafts (11).

3. The flotation machine scraper device according to claim 2, characterized in that, The separation guide groove (2) includes two first rectangular vertical plates (21) arranged in parallel; a U-shaped flat plate (22) is fixed between the lower ends of the two first rectangular vertical plates (21) and their inner walls; two rows of first threaded through holes (23) arranged in the horizontal direction are opened on the first rectangular vertical plates (21).

4. The flotation machine scraper device according to claim 3, characterized in that, The side support (3) includes a second rectangular upright plate (31); a mounting plate (32) is vertically fixed to the outer side of the second rectangular upright plate (31); a plurality of first oval through holes (33) are opened on the mounting plate (32); four second threaded through holes (34) that cooperate with the bearing (5) are opened on the mounting plate (32); a rectangular channel (35) is opened on the inner side of the lower half of the second rectangular upright plate (31); the depth of the rectangular channel (35) is the same as the thickness of the first rectangular upright plate (21); a row of second oval through holes (36) arranged horizontally are opened on the rectangular channel (35).

5. The flotation machine scraper device according to claim 4, characterized in that, The scraper (4) includes a rectangular scraper (41), and the lower end of the rectangular scraper (41) is set as an arc end face; three hook plates (42) that are attached to the cylindrical rod (13) are fixed on the upper half of one side of the rectangular scraper (41).

6. The flotation machine scraper device according to claim 5, characterized in that, The hook plate (42) is threadedly connected to the end of the hook with a third bolt (43).

Images