Sieve plate and vibrating screen

Abstract

The utility model discloses a sieve plate and a vibrating screen, which belong to the technical field of blast furnace ironmaking, and comprise an outer frame and a support skeleton, the support skeleton is erected in the outer frame, a plurality of material passing holes distributed in a matrix mode are arranged on the support skeleton, the support skeleton is divided into a blanking area and a screening area according to the blanking position of materials, and the screening area is arranged in the blanking area. A lining plate is arranged in the material passing hole located in the material falling area, and a screen is arranged in the material passing hole located in the screening area. Effective buffering protection is achieved at the position of the belt discharging screen plate, the problems of excessive abrasion and consumption of screen plate spare parts caused by long-term material impact at the position of a discharging point are effectively eradicated, and stability and reliability of screening equipment are improved.

Description

Technical Field

[0001] This utility model belongs to the field of blast furnace ironmaking technology, and particularly relates to a sieve plate and a vibrating screen. Background Technology

[0002] During the blast furnace smelting process, a vibrating screen is required to perform final screening of the raw ore before it enters the furnace, ensuring that the particle size of the ore entering the furnace is uniform and appropriate, thereby improving smelting efficiency and product quality.

[0003] Currently, due to the continuous contact and friction between raw ore and the screen plate of the vibrating screen during the feeding process, especially at the feeding point, the high-speed impact and prolonged action of the raw ore cause severe wear to the screen plate. This wear not only shortens the service life of the screen plate but also increases the frequency of spare parts replacement. Summary of the Invention

[0004] In view of the problems existing in the prior art, this utility model provides a screen plate and a vibrating screen, which can effectively buffer and protect the screen plate at the belt feeding point, effectively preventing the excessive wear and consumption of screen plate spare parts caused by long-term material impact at the feeding point, and improving the stability and reliability of the screening equipment.

[0005] This utility model is implemented as follows: On one hand, this application provides a sieve plate, including an outer frame and a supporting skeleton. The supporting skeleton is installed inside the outer frame and has a plurality of material passage holes arranged in a matrix. The supporting skeleton is divided into a material dropping area and a screening area according to the material discharge position. A liner is provided in the material passage hole located in the material dropping area, and a screen is provided in the material passage hole located in the screening area.

[0006] Furthermore, each of the material passage holes has a slot on its outer periphery, distributed circumferentially along the passage hole. The lower end face of both the liner and the screen has an insert plate adapted to the slot. The liner and screen are inserted into the material passage hole through the cooperation of the insert plate and the slot. By designing the liner and screen as detachable modules, they can be easily installed into the material passage hole through the cooperation of the insert plate and the slot. This modular design not only simplifies the installation process but also improves the maintainability and scalability of the equipment. When the liner or screen needs to be replaced due to wear, the operator simply pulls out the old liner or screen and inserts the new one. This ease of replacement greatly reduces downtime and maintenance costs. The tight fit between the insert plate and the slot ensures that the liner and screen are firmly fixed to the material passage hole, preventing them from moving or falling off during material handling. This robustness ensures long-term stable operation of the equipment; the fit between the slot and the insert plate also provides a certain degree of sealing, preventing material leakage from the gaps between the liner or screen and the material passage. This sealing improves screening efficiency and reduces material waste. Because the slot and insert plate design is somewhat versatile, liners and screens of different specifications or materials can be easily replaced to adapt to changes in different materials or screening requirements. The installation positions of the liners and screens can be flexibly adjusted. For example, the distribution and number of liners and screens on the material passage can be adjusted according to changes in the material discharge point or screening efficiency requirements, improving the flexibility and adaptability of the screening equipment.

[0007] Furthermore, the outer frame is a rectangular frame, and a stepped surface is provided on the inner sidewall of the outer frame. The lower end face of the support frame rests on the stepped surface. By providing a stepped surface on the inner sidewall, a more stable support foundation is provided for the support frame. This design can reduce the shaking and displacement of the support frame during operation, thereby improving the operational stability of the entire screening device. When maintenance of the support frame or screen is required, operators can easily disassemble and reinstall the support frame. The stepped surface design makes this process smoother and more convenient, thereby improving the maintainability of the equipment. By optimizing the connection method between the support frame and the outer frame, this design can further improve the load-bearing capacity of the equipment, enabling the screening device to handle larger quantities and heavier materials, thereby improving production efficiency.

[0008] Another aspect of this application provides a vibrating screen, wherein the vibrating screen is provided with any of the screen plates described above.

[0009] The advantages and technical effects of this utility model are as follows: By adopting the above-mentioned technical solution and installing a liner at the feeding point, the conveyor belt feeding screen plate is effectively buffered and protected. This reduces excessive wear of the screen due to direct material impact, effectively extending the service life of the screen plate. Furthermore, the installation of the liner does not significantly affect the material screening process, ensuring stable screening efficiency and quality. It not only effectively eliminates the problem of excessive wear and consumption of screen plate spare parts caused by long-term material impact at the feeding point, but also further improves the stability and reliability of the screening equipment.

[0010] By dividing the support frame into a material discharge zone and a screening zone according to the material discharge location, refined and efficient material handling is achieved. The material discharge zone focuses on receiving and buffering the falling material, while the screening zone focuses on screening and classifying the material. Liners are installed in the material passage holes of the material discharge zone to effectively reduce the direct impact of falling material on the support frame, thereby extending the service life of the support frame. At the same time, the linings also buffer and disperse impact force, making the material fall more smoothly. Screens are installed in the material passage holes of the screening zone to achieve fine screening of the material. The size and distribution of the screen apertures can be adjusted according to actual needs to meet the screening requirements of different materials. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the sieve plate provided in this embodiment of the utility model;

[0012] Figure 2 This is an exploded view of the overall structure of the sieve plate provided in this embodiment of the utility model.

[0013] In the diagram: 1. Outer frame; 1-1. Stepped surface; 2. Support frame; 2-1. Material passage hole; 2-2. Slot; 3. Liner plate; 4. Screen; 5. Insert plate. Detailed Implementation

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] like Figure 1 and Figure 2 As shown, this application provides a sieve plate, including an outer frame 1 and a support frame 2. The support frame 2 is installed inside the outer frame 1. The support frame 2 is provided with a plurality of material passage holes 2-1 arranged in a matrix. The support frame 2 is divided into a material dropping area and a screening area according to the material discharge position. A liner 3 is provided in the material passage hole 2-1 located in the material dropping area. Specifically, the liner 3 is a non-porous polyurethane board. A screen 4 is provided in the material passage hole 2-1 located in the screening area.

[0017] Furthermore, each of the material passage holes 2-1 is provided with a slot 2-2 on its outer periphery, the slots 2-2 being distributed circumferentially along the material passage hole 2-1. The lower end faces of the liner 3 and the screen 4 are provided with insert plates 5 that mate with the slots 2-2. The liner 3 and the screen 4 are inserted into the material passage hole 2-1 through the cooperation of the insert plates 5 and the slots 2-2. By designing the liner 3 and the screen 4 as detachable modules, they can be easily installed on the material passage hole 2-1 through the cooperation of the insert plates 5 and the slots 2-2. This modular design not only simplifies the installation process but also improves the maintainability and scalability of the equipment. When the liner 3 or the screen 4 needs to be replaced due to wear, the operator simply needs to pull out the old liner 3 or screen 4 and insert the new one. This ease of replacement greatly reduces downtime and maintenance costs. The tight fit between the insert plates 5 and the slots 2-2 ensures that the liner 3 and the screen 4 are firmly fixed on the material passage hole 2-1, thus preventing them from moving or falling off during material handling. This robustness ensures the long-term stable operation of the equipment. The cooperation between slot 2-2 and insert plate 5 also provides a certain degree of sealing, preventing material leakage from the gap between liner plate 3 or screen 4 and the material passage 2-1. This sealing improves screening efficiency and reduces material waste. Because slot 2-2 and insert plate 5 are designed with a degree of versatility, liners 3 and screens 4 of different specifications or materials can be easily replaced to adapt to changes in different materials or screening requirements. The installation positions of liners 3 and screens 4 can be flexibly adjusted. For example, the distribution and number of liners 3 and screens 4 on the material passage 2-1 can be adjusted according to changes in the material discharge point or screening efficiency requirements, improving the flexibility and adaptability of the screening equipment.

[0018] Furthermore, the outer frame 1 is a rectangular frame, and a stepped surface 1-1 is provided on the inner sidewall of the outer frame 1. The lower end face of the support frame 2 is mounted on the stepped surface 1-1. By providing the stepped surface 1-1 on the inner sidewall, a more stable support foundation is provided for the support frame 2. This design can reduce the shaking and displacement of the support frame 2 during operation, thereby improving the operational stability of the entire screening device. When maintenance is required on the support frame 2 or the screen 4, the operator can easily disassemble and reinstall the support frame 2. The design of the stepped surface 1-1 makes this process smoother and more convenient, thereby improving the maintainability of the equipment. By optimizing the connection method between the support frame 2 and the outer frame 1, this design can further improve the load-bearing capacity of the equipment, enabling the screening device to handle larger quantities and heavier materials, thereby improving production efficiency.

[0019] Another aspect of this application provides a vibrating screen, wherein the vibrating screen is provided with any of the screen plates described above.

[0020] By adopting the above technical solution, the installation of liner 3 at the material discharge point effectively buffers and protects the conveyor belt screen plate. This reduces excessive wear on the screen 4 caused by direct material impact, effectively extending the service life of the screen plate. Furthermore, the installation of liner 3 does not significantly affect the material screening process, ensuring stable screening efficiency and quality. It not only effectively prevents excessive wear and consumption of screen plate components at the material discharge point due to long-term material impact, but also further improves the stability and reliability of the screening equipment.

[0021] By dividing the support frame 2 into a material discharge zone and a screening zone according to the material discharge location, refined and efficient material handling is achieved. The material discharge zone focuses on receiving and buffering the falling material, while the screening zone focuses on screening and classifying the material. Liners 3 are installed in the material passage holes 2-1 of the material discharge zone to effectively reduce the direct impact of falling material on the support frame 2, thereby extending the service life of the support frame 2. Simultaneously, the liner 3 also buffers and disperses the impact force, making the material fall more smoothly. Screens 4 are installed in the material passage holes 2-1 of the screening zone to achieve fine screening of the material. The aperture size and distribution of the screen 4 can be adjusted according to actual needs to meet the screening requirements of different materials.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sieve plate, characterized in that, It includes an outer frame and a support skeleton. The support skeleton is installed inside the outer frame. The support skeleton is provided with a number of material passage holes arranged in a matrix. The support skeleton is divided into a material dropping area and a screening area according to the material feeding position. A liner is provided in the material passage hole located in the material dropping area, and a screen is provided in the material passage hole located in the screening area.

2. The sieve plate according to claim 1, characterized in that, Each of the material passage holes is provided with a slot on its outer periphery. The slots are distributed along the circumference of the material passage hole. The lower end face of the liner and the screen is provided with an insert plate that matches the slot. The liner and the screen are inserted into the material passage hole through the cooperation of the insert plate and the slot.

3. The sieve plate according to claim 1, characterized in that, The outer frame is a rectangular frame, and a stepped surface is provided on the inner side wall of the outer frame. The lower end face of the supporting skeleton is mounted on the stepped surface.

4. A vibrating screen, characterized in that, The vibrating screen is provided with a screen plate as described in any one of claims 1 to 3.

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