Impeller protection structure

Abstract

The utility model relates to the technical field of mining machinery, and discloses an impeller protection structure which comprises an impeller body, the impeller body comprises an upper steel plate, a lower steel plate and a plurality of arc-shaped plates evenly distributed between the upper steel plate and the lower steel plate in the circumferential direction, and the arc-shaped plates divide the interior of the impeller body into a plurality of flow channels; runner plates are mounted on the upper top wall and the lower bottom wall of the runner, the runner plates are fixedly connected to the upper steel plate or the lower steel plate through a plurality of bolts, and the bolts are arranged in a material storage area, close to the arc-shaped plate, in the runner. The runner plate is connected into the impeller body through the high-strength bolts, the bolts are arranged in the runner and close to the material storage area of the arc-shaped plate, and materials cannot abrade the bolts, so that the runner plate is firmly connected on the upper top wall and the lower bottom wall of the runner, the runner plate cannot be thrown out of the impeller, and the impeller body can be reliably protected.

Description

Technical Field

[0001] The utility model relates to the technical field of mining machinery, in particular to an impeller protection structure. Background Art

[0002] With the depletion of natural sand and gravel resources, the increasing requirements for ecological protection and the continuous increase in the demand for construction projects, machine-made sand and gravel are gradually replacing natural sand and gravel to meet the market demand. Vertical sand making machine is widely used in the medium and fine crushing of various high-hard and extra-hard materials such as various ores, cement, refractory materials, bauxite clinker, corundum, glass raw materials, etc. It is mainly composed of feed cylinder, impact cylinder, impeller, guard plate, discharge cylinder, vertical shaft and other components.

[0003] During the operation of the sand making machine, the inside of the impeller body will be worn by the material. Generally, a flow channel plate is set in the flow channel of the impeller to protect the impeller body. However, the impeller of the traditional sand making machine (attached Figure 1 ) The flow channel plate is embedded in the positioning block. The positioning block is processed into an L shape to clamp the edge of the flow channel plate. The positioning block is welded to the impeller body. However, the positioning block will decrease in strength after wear, and the flow channel plate will be thrown out of the impeller, causing damage to the impeller. Summary of the invention

[0004] The purpose of the utility model is to provide an impeller protection structure, which adopts high-strength bolts to connect the flow channel plate to the impeller body, and the bolts are arranged in the material storage area near the arc plate in the flow channel. The material will not wear the bolts, so that the flow channel plate is firmly connected, and the problem of damage to the impeller caused by the flow channel plate being thrown out of the impeller due to wear of the positioning block is solved.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An impeller protection structure comprises an impeller body, wherein the impeller body comprises an upper steel plate, a lower steel plate and a plurality of arc plates evenly distributed circumferentially between the upper steel plate and the lower steel plate, wherein the arc plates divide the impeller body into a plurality of flow channels; flow channel plates are installed on the upper top wall and the lower bottom wall of the flow channel, and the flow channel plates are fixedly connected to the upper steel plate or the lower steel plate by a plurality of first bolts, and the first bolts are arranged in a material storage area in the flow channel close to the arc plates.

[0007] In some embodiments, a long pin is fixedly installed on the inner side of the arc plate in the flow channel, and the long pin is also arranged in the material storage area of ​​the flow channel close to the arc plate. The outer sides of the upper and lower flow channel plates in the flow channel are provided with grooves that cooperate with the long pin.

[0008] In some embodiments, both the upper steel plate and the lower steel plate are provided with pin holes, and both ends of the long pin are inserted into the pin holes.

[0009] In some embodiments, a threaded hole is provided on the arc-shaped plate, and a set screw is installed in the threaded hole to fix the long pin.

[0010] In some embodiments, the upper edge of the upper steel plate and the lower edge of the lower steel plate are both detachably and fixedly connected with a plurality of guard plates.

[0011] In some embodiments, a wear-resistant layer is welded on the outer surface of the guard plate.

[0012] In some embodiments, the upper steel plate and the lower steel plate are both connected to the guard plate using pins and second bolts.

[0013] The flow channel plate in the utility model is connected to the impeller body by multiple high-strength bolts. The bolts are arranged in the material storage area near the arc plate in the flow channel. The materials will not wear the bolts, so that the flow channel plate is firmly connected to the upper top wall and the lower bottom wall of the flow channel. The flow channel plate will not be thrown out of the impeller, and the impeller body can be reliably protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the impeller of a traditional sand making machine;

[0016] Figure 2 A schematic diagram of the installation structure of the flow channel plate in the impeller protection structure provided in a specific implementation mode of the utility model;

[0017] Figure 3 A partial cross-sectional schematic diagram of a flow channel plate installation structure in an impeller protection structure provided in a specific implementation manner of the utility model;

[0018] Figure 4 The present invention is a schematic diagram of a guard plate installation structure in an impeller protection structure provided in a specific implementation manner of the present invention.

[0019] The following are marked in the accompanying drawings:

[0020] 101. Limit block; 102. Flow channel plate; 1. Impeller body; 11. Upper steel plate; 12. Lower steel plate; 13. Arc plate; 2. Flow channel plate; 3. First bolt; 4. Long pin; 5. Set screw; 6. Guard plate; 7. Pin; 8. Second bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Please refer to Figures 2 to 4 , Figure 2 A schematic diagram of the installation structure of the flow channel plate in the impeller protection structure provided in a specific implementation mode of the utility model; Figure 3 A partial cross-sectional schematic diagram of a flow channel plate installation structure in an impeller protection structure provided in a specific implementation manner of the utility model; Figure 4 The present invention is a schematic diagram of a guard plate installation structure in an impeller protection structure provided in a specific implementation manner of the present invention.

[0023] In a specific implementation, the impeller protection structure provided in this embodiment includes an impeller body 1, the impeller body 1 includes an upper steel plate 11, a lower steel plate 12, and a plurality of arc plates 13 uniformly arranged between the upper steel plate 11 and the lower steel plate 12 in the circumferential direction, and the arc plates 13 divide the impeller body 1 into a plurality of flow channels; the flow channel plates 2 are installed on the upper top wall and the lower bottom wall of the flow channel, and the flow channel plates 2 are fixedly connected to the upper steel plate 11 or the lower steel plate 12 by a plurality of first bolts 3, and the first bolts 3 are arranged in the material storage area near the arc plates 13 in the flow channel. Preferably, three first bolts 3 are provided.

[0024] The flow channel plate 2 in this embodiment is connected to the impeller body 1 by multiple high-strength first bolts 3. The first bolts 3 are arranged in the material storage area near the arc plate 13 in the flow channel. The material will not wear the first bolts 3, so that the flow channel plate 2 is firmly connected to the upper top wall and the lower bottom wall of the flow channel. The flow channel plate 2 will not be thrown out of the impeller, and the impeller body 1 can be reliably protected.

[0025] On the basis of the above embodiment, a long pin 4 is fixedly arranged on the inner side of the arc plate 13 in the flow channel, and the long pin 4 is also arranged in the material storage area near the arc plate 13 in the flow channel, and the outer sides of the upper and lower flow channel plates 2 in the flow channel are provided with grooves that cooperate with the long pin 4. The first channel bolt 3 and the long pin 4 cooperate to fix the flow channel plate 2, so that the long pin 4 can bear shear force, avoid the phenomenon that the first bolt 3 bears both tension and shear force, and can increase the service life of the first bolt 3, so that the flow channel plate 2 is more firmly connected in the impeller body 1, and the impeller body 1 can be more reliably protected.

[0026] On the basis of the above embodiment, the upper steel plate 11 and the lower steel plate 12 are provided with pin holes, and the two ends of the long pin 4 are inserted into the corresponding upper and lower pin holes. The long pin is plug-connected to facilitate the disassembly and assembly of the flow channel plate 2, which can improve the disassembly and assembly and maintenance efficiency of the flow channel plate 2.

[0027] On the basis of the above embodiment, a threaded hole is provided on the arc plate 13, and a set screw 5 is installed in the threaded hole to fix the long pin 4. Preferably, the set screw 5 is a hexagon socket set screw. The use of the set screw 5 to fix the long pin 4 can prevent the long pin 4 from rotating, so that the long pin 4 can better position the flow channel plate 2.

[0028] In some embodiments, the upper end of the upper steel plate 11 and the lower end edge of the lower steel plate 12 are both detachably fixedly connected with a plurality of guard plates 6. The outer edge of the traditional sand making machine impeller is welded with wear-resistant welding rods without other protection. After the wear-resistant welding rod layer is worn off, the impeller needs to be taken out and the wear-resistant layer needs to be welded again. The construction period is long, and it takes at least 5-6 hours. In this embodiment, the upper end edge of the upper steel plate 11 and the lower end edge of the lower steel plate 12 are both detachably connected with the guard plates 6, which can not only more reliably protect the impeller body 1, but also greatly reduce the maintenance time during maintenance, and the maintenance and replacement can be completed within 1 hour.

[0029] On the basis of the above embodiment, a wear-resistant layer is welded on the outer surface of the guard plate 6. That is, when the guard plate 6 is connected to the upper edge of the upper steel plate 11, the upper end surface of the guard plate 6 exposed to the outside is its outer surface, and when the guard plate 6 is connected to the lower edge of the lower steel plate 12, the lower end surface of the guard plate 6 exposed to the outside is its outer surface. Providing a wear-resistant layer on the outer surface of the guard plate 6 can increase the service life of the guard plate 6.

[0030] On the basis of the above-mentioned embodiment, the upper steel plate 11 and the lower steel plate 12 are connected to the guard plate 6 by the pin 7 and the second bolt 8, so as to facilitate assembly and disassembly.

[0031] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0032] The utility model is described in detail above. The principle and implementation method of the utility model are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the utility model will not be limited to the embodiments described herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. An impeller protection structure, characterized in that: The invention comprises an impeller body (1), wherein the impeller body (1) comprises an upper steel plate (11), a lower steel plate (12), and a plurality of arc-shaped plates (13) uniformly arranged circumferentially between the upper steel plate (11) and the lower steel plate (12), wherein the arc-shaped plates (13) divide the impeller body (1) into a plurality of flow channels; a flow channel plate (2) is mounted on the upper top wall and the lower bottom wall of the flow channel, and the flow channel plate (2) is fixedly connected to the upper steel plate (11) or the lower steel plate (12) by means of a plurality of first bolts (3), wherein the first bolts (3) are arranged in a material storage area in the flow channel close to the arc-shaped plates (13).

2. The impeller protection structure according to claim 1, characterized in that: A long pin (4) is fixedly arranged on the inner side of the arc plate (13) in the flow channel. The long pin (4) is also arranged in a material storage area in the flow channel close to the arc plate (13). The outer side surfaces of the upper and lower flow channel plates (2) in the flow channel are both provided with grooves that cooperate with the long pin (4).

3. The impeller protection structure according to claim 2, characterized in that: The upper steel plate (11) and the lower steel plate (12) are both provided with pin holes, and both ends of the long pin (4) are inserted into the pin holes.

4. The impeller protection structure according to claim 3, characterized in that: The arc-shaped plate (13) is provided with a threaded hole, in which a set screw (5) is installed to fix the long pin (4).

5. The impeller protection structure according to claim 1, characterized in that: The upper edge of the upper steel plate (11) and the lower edge of the lower steel plate (12) are both detachably and fixedly connected with a plurality of guard plates (6).

6. The impeller protection structure according to claim 5, characterized in that: The outer surface of the guard plate (6) is built-up with a wear-resistant layer.

7. The impeller protection structure according to claim 6, characterized in that: The upper steel plate (11) and the lower steel plate (12) are both connected to the guard plate (6) by means of pins (7) and second bolts (8).

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