Combined grate bar for separating ore materials

Abstract

The utility model discloses a combined type screen bar for separating ore materials, which comprises a plurality of arc-shaped screen bars, a plurality of screen holes for screening are formed after the screen bars are installed, the screen bars are identical in structure, lap joint portions are arranged on the front sides and the rear sides of the adjacent screen bars, and arc-shaped grooves extending towards the two sides of the lap joint portions are arranged on the top surfaces of the lap joint portions. An arc-shaped plate matched with the arc-shaped groove in shape is embedded in the arc-shaped groove, and the arc-shaped plate, the lap joint part and the two sides of the lap joint part are fastened and installed through fasteners. Compared with the prior art, the screen bars are arranged to be of the same structure, only one die is needed during casting, the production cost is reduced, in addition, the screen bars jointly bear force through the lap joint structures in the vertical direction and bear force through the arc-shaped plates in the length direction, the stress of the fastening bolts is reduced, and the stability of the assembled screen bars can be guaranteed.

Description

Technical Field

[0001] This utility model relates to screen bars for mineral separation, and more particularly to combined screen bars for separating ore materials. Background Technology

[0002] Screen bars are a component of a mining crusher. They have several screen holes, which are used to screen the ore during crushing. Ore particles smaller than the screen hole diameter fall through the screen holes, while those larger than the screen hole diameter are crushed and fall off.

[0003] To reduce workpiece volume and avoid casting cracks, our company's prior patent application, number 2024217546765, discloses a combined screen bar, including a left screen bar, a middle screen bar, and a right screen bar. The left and right sides of the middle screen bar are detachably connected to the left and right screen bars, respectively. The left and right screen bars each include a set of complete screen holes and a set of 1 / 2 screen holes. The middle screen bar has a set of 1 / 2 screen holes on each side. After the middle screen bar is installed, the 1 / 2 screen holes on both sides are combined with the 1 / 2 screen holes on the left and right screen bars to form a complete set of screen holes. Each set of screen holes includes several screen hole units of the same size.

[0004] However, in the actual casting process, because this type of combined screen bar has three structures, three molds are required during casting, which increases the cost. In addition, after assembly, the limiting structure in the length direction of the screen bar relies solely on bolts, which are prone to damage if the bolts are subjected to excessive force. Utility Model Content

[0005] In view of the shortcomings of existing technologies, such as high production costs due to different screen bar structures and excessive bolt load due to the lack of length direction limiting of screen bars, which makes them prone to damage, this utility model provides a combined screen bar for separating ore materials.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] A combined screen bar for separating ore materials includes several arc-shaped screen bars. After the screen bars are installed, they form several screen holes for screening. The screen bars have the same structure and the front and rear sides of adjacent screen bars are provided with overlapping parts. The top surface of the overlapping part is provided with an arc-shaped groove extending to both sides. An arc-shaped plate that matches the shape of the arc-shaped groove is embedded in the arc-shaped groove. The arc-shaped plate is fastened to the overlapping part and its two sides by fasteners.

[0008] Preferably, the screen bar has a row of front-to-back screen holes in the middle and a row of half screen holes in the front-to-back direction on both sides, and the adjacent screen bars are combined to form a complete screen.

[0009] Preferably, guide plates are provided on both sides of the row of sieve holes in the middle of the sieve bar.

[0010] Preferably, the guide plate has rounded chamfered ends.

[0011] Preferably, the screen bars are provided with overlapping platforms at both ends, and the lower left and lower right sides of the overlapping platforms are provided with notches. During installation, the upper left side of the overlapping platform of the right screen bar is placed at the notch on the upper right side of the left screen bar.

[0012] Preferably, the fastener is a fastening bolt.

[0013] Compared with the prior art, the advantages of this utility model are as follows: First, each screen bar is set to the same structure, so only one mold is needed during casting, which reduces the production cost. In addition, the screen bars share the load in the vertical direction through an overlapping structure, and in the length direction, they are supported by an arc-shaped plate, which reduces the stress on the fastening bolts and ensures the stability of the screen bars after assembly. Attached Figure Description

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0015] Figure 1 This is a top view of this application;

[0016] Figure 2 This is a side view of this application;

[0017] Figure 3 This is a perspective view of the present application;

[0018] Figure 4 This is an exploded view of this application;

[0019] In the diagram: 10, sieve bar; 100, sieve hole; 101, overlapping platform; 1011, overlapping part; 1012, arc-shaped groove; 102, guide plate; 20, arc-shaped plate; 30, fastener. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0021] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures. Example

[0022] This embodiment mainly describes the title of the combined screen bar used for ore material separation, as follows:

[0023] Combined screen bars for separating ore materials, such as Figure 1-4 As shown, the system includes several arc-shaped screen bars 10. After installation, the screen bars 10 form several screen holes 100 for screening. The screen bars 10 have the same structure, and adjacent screen bars 10 have overlapping portions 1011 on their front and rear sides. The top surface of the overlapping portion 1011 has an arc-shaped groove 1012 extending to both sides. An arc-shaped plate 20 that matches the shape of the arc-shaped groove 1012 is embedded in the arc-shaped groove 1012. The arc-shaped plate 20 is fastened to the overlapping portion 1011 and its two sides by fasteners 30. During installation, after the overlapping portion 1011 is overlapped, the arc-shaped plate 20 is placed into the arc-shaped groove 1012, and then the fasteners 30 are passed through the arc-shaped plate 20 and the overlapping portion 1011 for fastening. Finally, fasteners 30 are set on both sides of the overlapping portion 1011 to fix the adjacent screen bars 10.

[0024] Preferably, the sieve bar 10 has a row of front-to-back sieve holes 100 in the middle and a row of half-sieve holes 100 in the front-to-back direction on both sides. Adjacent sieve bars 10 are combined to form a complete sieve hole 100. The complete sieve hole 100 and the combined sieve hole 100 are used together for screening. After assembly, a row of half-sieve holes 100 remains on each side, which has no effect on screening.

[0025] Preferably, guide plates 102 are provided on both sides of the row of screen holes 100 in the middle of the screen bar 10. The guide plates 102 are used to guide the material into each row of screen holes 100, and have the function of diverting the flow.

[0026] Preferably, the guide plate 102 has rounded chamfered structures at both ends. Due to the certain tilt angle during installation, the chamfered structure facilitates material feeding and discharging.

[0027] Preferably, the screen bars 10 are provided with overlapping platforms 101 at both the front and rear ends. The lower left and lower right sides of the overlapping platforms 101 are provided with notches. During installation, the upper left side of the overlapping platform 101 of the right screen bar 10 is placed at the notch on the upper right side of the left screen bar 10. This design provides a specific structure for the overlapping portion 1011. This structure allows the assembled screen bars 10 to bear force on each other vertically, preventing the bolts from breaking.

[0028] Preferably, the fastener 30 is a bolt. Threaded holes are provided on the screen bar 10 for connection and fixation with the bolt.

[0029] The title provided above provides a detailed description of the present utility model. Specific examples have been used to illustrate the principles and implementation methods of the present utility model. The description of the above embodiments is only for the purpose of helping to understand the present utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present utility model without departing from the principles of the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A combined screen bar for separating ore materials, comprising several arc-shaped screen bars, wherein the screen bars, after being installed, form several screen holes for screening, characterized in that, The screen bars have the same structure and the front and rear sides of adjacent screen bars are provided with overlapping parts. The top surface of the overlapping part is provided with an arc-shaped groove extending to both sides. An arc-shaped plate that matches the shape of the arc-shaped groove is embedded in the arc-shaped groove. The arc-shaped plate is fastened to the overlapping part and its two sides by fasteners.

2. The combined screen bar for ore material separation according to claim 1, characterized in that: The screen bar has a row of front-to-back screen holes in the middle and a row of half screen holes in the front-to-back direction on both sides. Adjacent screen bars are combined to form a complete screen.

3. The combined screen bar for ore material separation according to claim 2, characterized in that: Guide plates are provided on both sides of the row of sieve holes in the middle of the sieve bar.

4. The combined screen bar for ore material separation according to claim 3, characterized in that: The guide plate has rounded chamfered corners at both ends.

5. The combined screen bar for ore material separation according to claim 1, characterized in that: The screen bars are provided with overlapping platforms at both the front and rear ends. There are notches on the lower left and lower right sides of the overlapping platforms. During installation, the upper left side of the overlapping platform of the right screen bar is placed at the notch on the upper right side of the left screen bar.

6. The combined screen bar for ore material separation according to claim 1, characterized in that: The fastener is a bolt.

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