A high-efficiency and wear-resistant screen basket for coal washing

Abstract

This utility model relates to the field of coal washing screen basket technology, and discloses a high-efficiency and wear-resistant coal washing screen basket with connecting parts, including: screening groups, in which there are several groups, the several groups of screening groups surround to form a conical structure, the screening group including a screen plate body with an electroplated thin film structure layer on the inner surface, used for screening coal blocks and can be replaced individually; this utility model divides the screen mesh into several independent wear-resistant screen plate bodies, when the surface of some screen plate bodies is damaged, the staff can replace them individually, and the staff does not need to recalibrate the overall position of the screen basket. In addition, this screen basket, through the setting of support and limiting parts, can not only restrict the position of the screen plate body after installation, but also support the external frame and the screen plate body, solving the problem that when the screen mesh is damaged, the replacement of the whole screen basket not only requires recalibration, which is time-consuming, but also easily leads to high maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of coal washing screen basket technology, specifically a high-efficiency and wear-resistant coal washing screen basket. Background Technology

[0002] Coal washing screen baskets are key components of centrifugal dewatering machines or vibrating screens. They mainly separate water and solids in coal slurry through high-speed rotation or vibration, and are used for material separation and dewatering operations in the coal processing process.

[0003] Currently, some coal washing screen baskets use reinforcing ribs and other structures on their surface to support the screen and improve its stability. However, after prolonged use, the surface of some screens is prone to damage due to repeated impacts and wear from coal blocks. In this case, the entire screen basket needs to be replaced. When installing the screen basket afterward, the position between the screen basket and the centrifugal dewatering machine or vibrating screen needs to be recalibrated, which is inconvenient and time-consuming. In addition, replacing damaged screen baskets can lead to high maintenance costs and affect overall profits. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency and wear-resistant screen basket for coal washing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency and wear-resistant coal washing screen basket, including a connecting part, and further comprising: The screening group consists of several groups, which surround each other to form a conical structure. Each screening group includes a sieve plate body with an electroplated thin film structure layer on its inner surface. The support assembly includes a support member installed on the top of the connector and a limiting member installed on the top of the screening group. The support member and the limiting member are assembled to reinforce and support the screening group.

[0006] Preferably, the screening group further includes: The outer frame, welded to the top of the connector, is used to house the sieve plate body; The guide members are attached to and welded to both sides of the surface of the screen plate body, which are used to stabilize the position of the screen plate body inside the outer frame. The arc-shaped strip is welded to the surface of the outer frame to support and reinforce the screen plate body and to decompose the force exerted by the coal blocks on the screen plate body.

[0007] Preferably, the sieve plate body is arc-shaped, and several screening grooves are longitudinally opened on the surface of the sieve plate body.

[0008] Preferably, the top of the connector is provided with a slot for limiting the position of the sieve plate body and the guide, and the bottom of the sieve plate body and the guide are both in contact with the inner wall of the slot.

[0009] Preferably, the support member includes: Several diagonal braces are welded to the top of the connector and surround it in a ring to reinforce the outer frame; A disc is fitted onto the surface of the outer frame and welded to the top of the diagonal brace to support the limiting member.

[0010] Preferably, the limiting member includes: A wrapping part is provided on the top of the disc and sleeved on the surface of the outer frame, used to seal the top of the sieve plate body; Bolts, installed on the surface of the wrapping part and threaded through the disc, are used to reinforce the connection between the wrapping part and the disc; The positioning part is welded to the bottom of the wrapping part and is used to limit the position of the wrapping part. Columnar grooves are opened on both sides of the top of the outer frame, and the surface of the positioning part is in contact with the inner wall of the columnar groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model divides the screen mesh into several independent wear-resistant screen plate bodies. When the surface of some screen plate bodies is damaged, the staff can replace them individually. Subsequently, the staff does not need to recalibrate the overall position of the screen basket. In addition, through the setting of support and limiting parts, this screen basket can not only restrict the position of the screen plate body after installation, but also support the external frame and the screen plate body. This solves the problem that when some screen baskets are damaged, replacing the whole basket not only requires recalibration, which is time-consuming, but also easily leads to high maintenance costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention with the limiting component removed; Figure 3 This is a three-dimensional structural diagram of the present invention with the outer frame and connectors partially disassembled; Figure 4 This is a three-dimensional structural diagram of the present invention with the sieve plate body and guide components disassembled; Figure 5 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0013] In the diagram: 100, connector; 200, support assembly; 210, support component; 211, diagonal brace; 212, disc; 220, limiting component; 221, wrapping component; 222, bolt; 223, positioning component; 300, screening group; 310, outer frame; 320, screen plate body; 330, guide component; 340, arc strip; 350, reinforcing component. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] Please see Figure 1-5As shown, a high-efficiency and wear-resistant coal washing screen basket includes a connector 100, which connects to equipment used for coal washing and screening, including a centrifugal dewatering machine or a vibrating screen. Both are existing mature technologies and will not be described in detail here. The connector 100 is used for the overall installation of the screen basket. It also includes a support assembly 200 and several sets of screening groups 300. The several sets of screening groups 300 surround to form a conical structure. The screening group 300 includes a screen plate body 320 for screening coal blocks, the inner surface of which is provided with a wear-resistant electroplated film. The structural layer can improve the service life of the screen plate body 320. The screen plate body 320 has an arc-shaped design, and several screening grooves are longitudinally opened on the surface of the screen plate body 320. The screening group 300 also includes a guide 330, an arc-shaped strip 340, and an outer frame 310 welded to the top of the connector 100. The top of the connector 100 has a slot, and the bottom of the screen plate body 320 and the guide 330 are both in contact with the inner wall of the slot to limit the position of the screen plate body 320 and the guide 330. The outer frame 310... The number of outer frames 310 is several. The outer frames 310 are used to house the screen plate body 320. Several outer frames 310 are arranged adjacent to each other. Guide members 330 are attached to the inner wall of the outer frames 310 and welded to both sides of the surface of the screen plate body 320. They are used to stabilize the position of the screen plate body 320 inside the outer frames 310. When the screen plate body 320 is assembled or disassembled, the guide members 330 can guide and limit the movement of the screen plate body 320 inside the outer frames 310. Arc-shaped strips 340 are used to support and reinforce the screen plate body 320. Arc-shaped strips 340 are welded to the outer frames 310. The surface of the arc-shaped strip 340 is used to decompose the force exerted by the coal on the screen plate body 320. The surface of the arc-shaped strip 340 is welded with a reinforcing member 350, which is welded to the surface of the outer frame 310 to stabilize and reinforce the arc-shaped strip 340. When the coal inside the screen basket is screened, the coal comes into contact with the surface of the screen plate body 320 under the action of centrifugal force. Part of the force exerted by the coal on the screen plate body 320 can be decomposed by the arc-shaped strip 340 and the reinforcing member 350. The arc-shaped strip 340 and the reinforcing member 350 can increase the stability of the screen plate body 320. Support assembly 200 includes a support member 210 mounted on the top of connector 100 and a limiting member 220 mounted on the top of screening group 300. The support member 210 and the limiting member 220 are assembled to reinforce and support the screening group 300. There are several support assemblies 200, which can be disassembled individually. The support member 210 includes a disc 212 and several inclined braces 211 welded to the top of connector 100. The several inclined braces 211 are arranged in a ring around and cooperate with the conical structure of the screening group 300 to reinforce the outer frame 310. The disc 212 is sleeved on the outer frame 310. The surface of frame 310 is welded to the top of the diagonal brace 211, which provides side support and reinforcement for the outer frame 310. Simultaneously, disc 212 supports limiting member 220, which includes a wrapping part 221 and bolts 222. The wrapping part 221 is positioned on top of disc 212 and fits against its top. After installation, the wrapping part 221 is fitted onto the surface of the outer frame 310 to seal the top of the outer frame 310. At this time, the movement distance of the screen plate body 320 located inside the outer frame 310 is limited. The screen plate body 320 and the guide... The component 330 can be stably placed in the outer frame 310. The bolt 222 is installed on the surface of the wrapping part 221 and threaded through the disc 212. When the wrapping part 221 is installed on the top of the disc 212, the bolt 222 is threadedly connected to the disc 212, which can reinforce the position of the wrapping part 221 and ensure the stability of the screen plate body 320 inside the outer frame 310. When it is necessary to replace a part of the screen plate body 320, only the corresponding wrapping part 221 needs to be removed, and the positions of the remaining wrapping parts 221 remain unchanged. Both sides of the top of the outer frame 310 are provided with The cylindrical groove and the limiting member 220 also include a positioning part 223 welded to the bottom of the wrapping part 221. The surface of the positioning part 223 is in contact with the inner wall of the cylindrical groove. The positioning part 223 is used to limit the position of the wrapping part 221. When the wrapping part 221 is installed on the top of the outer frame 310, the positioning part 223 and the cylindrical groove can be used to determine the accuracy of the installation position of the wrapping part 221. When the positioning part 223 is placed inside the cylindrical groove, it can also initially limit the installation position of the positioning part 223 so that the rear bolt 222 can be quickly installed and the position of the wrapping part 221 can be reinforced.

[0016] Working principle: The screen plate body 320 is installed inside the outer frame 310 through the guide 330. The coal block placed in the screen basket adheres to the inner surface of the screen plate body 320 under the action of centrifugal force. At this time, the arc strip 340, the reinforcing member 350 and the inclined support 211 can support and reinforce the position of the screen plate body 320. The moisture on the surface of the coal block is removed through the screening trough. When the surface of part of the screen plate body 320 is damaged, the operator tightens the bolt 222 to remove the corresponding wrapping part 221. At this time, the top of the damaged screen plate body 320 is exposed to the outside. The operator can directly disassemble and replace it. After the replacement is completed, the operator re-fixes the position of the screen plate body 320 through the cooperation between the limiting member 220 and the wrapping part 221 for subsequent use. The disassembly and maintenance process does not affect the other screen plate bodies 320. Replacing the damaged screen plate body 320 separately can not only improve efficiency, but also reduce maintenance costs.

[0017] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A high-efficiency, wear-resistant coal washing screen basket, comprising a connecting part (100), characterized in that, Also includes: The sieve group (300) is a number of groups, and the sieve group (300) surrounds to form a conical structure. The sieve group (300) includes a sieve plate body (320) with an electroplated thin film structure layer on its inner surface. The support assembly (200) includes a support member (210) mounted on the top of the connector (100) and a limiting member (220) mounted on the top of the screening group (300). The support member (210) and the limiting member (220) are assembled to reinforce and support the screening group (300).

2. The high-efficiency wear-resistant coal washing screen basket according to claim 1, characterized in that, The screening group (300) further includes: The outer frame (310) is welded to the top of the connector (100) and is used to house the sieve plate body (320); The guide (330) is attached to and welded to the inner wall of the outer frame (310) on both sides of the surface of the screen plate body (320) to stabilize the position of the screen plate body (320) inside the outer frame (310); An arc-shaped strip (340) is welded to the surface of the outer frame (310) to support and reinforce the screen plate body (320) and to decompose the force exerted by the coal block on the screen plate body (320).

3. The high-efficiency wear-resistant coal washing screen basket according to claim 1, characterized in that: The sieve plate body (320) is arc-shaped, and several screening grooves are longitudinally opened on the surface of the sieve plate body (320).

4. The high-efficiency wear-resistant coal washing screen basket according to claim 2, characterized in that: The top of the connector (100) is provided with a slot for limiting the sieve plate body (320) and the guide (330). The bottom of the sieve plate body (320) and the guide (330) are both in contact with the inner wall of the slot.

5. The high-efficiency wear-resistant coal washing screen basket according to claim 2, characterized in that, The support member (210) includes: Several diagonal braces (211) are welded to the top of the connector (100) and surround it in a ring to reinforce the outer frame (310). The disc (212) is fitted onto the surface of the outer frame (310) and welded to the top of the diagonal brace (211) to support the limiting member (220).

6. The high-efficiency wear-resistant coal washing screen basket according to claim 5, characterized in that: The limiting member (220) includes: The wrapping part (221) is disposed on the top of the disc (212) and sleeved on the surface of the outer frame (310) for sealing the top of the sieve plate body (320); Bolts (222) are installed on the surface of the wrapping part (221) and threaded through the disc (212) to reinforce the connection between the wrapping part (221) and the disc (212); The positioning part (223) is welded to the bottom of the wrapping part (221) to limit the position of the wrapping part (221). The top of the outer frame (310) has columnar grooves on both sides, and the surface of the positioning part (223) fits against the inner wall of the columnar groove.

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