Manganese powder screening device

Abstract

The utility model relates to the technical field of new metal material vibration conveying equipment, in particular to a manganese powder screening device which comprises a screening mechanism, a hopper located above the screening mechanism and a dust removal mechanism communicated with the hopper. The screening mechanism comprises a rack, a screening bin fixed to the rack and a screen fixed in the screening bin, a feeding port is formed in the upper portion of the screening bin, and the hopper is located over the feeding port. The multiple layers of screens are obliquely arranged from one end of the feeding port of the screening bin to the other end of the feeding port of the screening bin, and the mesh number of the multiple layers of screens is sequentially increased from top to bottom. The multiple layers of screens are used for parallel screening, the area is increased, stacking is reduced through inclined arrangement, the screening time is shortened, and the yield is increased; the number of the multiple layers of screens increases from top to bottom, graded screening can be achieved, blocking is avoided, manganese powder with different particle sizes can be accurately separated, the screening efficiency is high, the filtering effect is good, and the device is good in raise dust adsorbability, high in integration and stable in installation.

Description

Technical Field

[0001] This utility model relates to the technical field of vibratory conveying equipment for new metal materials, specifically a manganese powder screening device. Background Technology

[0002] Manganese ore powder is a powdery substance produced from manganese ore. Manganese ore typically contains a high manganese content and can be processed into manganese ore powder through grinding and sieving. Manganese powder has numerous applications. For example, in the steel industry, it is mainly used for desulfurization and deoxidation of steel; it is also used as an alloying additive to improve the strength, hardness, elastic limit, wear resistance, and corrosion resistance of steel; in high-temperature industries, manganese powder can also be used as an additive in high-temperature refractory materials to improve their high-temperature resistance; in addition, manganese powder is also used in non-ferrous metals, pharmaceuticals, food, analysis, and scientific research, making it a widely used raw material.

[0003] Manganese powder typically undergoes crushing, sieving, and bagging processes in its preparation. To remove impurities and ensure product quality, the sieving process is crucial. Conventional sieving devices usually remove impurities from manganese powder using filters and vibrators. For example, the existing technology "Manganese-Iron Alloy Low-Powder Discharge Device" (Publication No.: CN 221070210 U) discloses a discharge device that uses a vibrator and filter to remove gravel and fine particles, thereby improving product quality. However, the existing technology still has the following technical problems:

[0004] 1. Low screening efficiency. In existing technology, the filter screen is installed on the opening of the feed chute, and the opening is small with only one layer of filter screen. When screening manganese powder, the amount of manganese powder that can pass through the opening per unit time is relatively small due to the small opening. Furthermore, since there is only one layer of filter screen, when processing a large amount of manganese powder, the material accumulates on the filter screen quickly, which will hinder the subsequent manganese powder from reaching the filter screen for screening, resulting in low overall screening efficiency.

[0005] 2. Poor filtration effect. The filtration accuracy of a single-layer filter is relatively limited. For some manganese powder with small particle size differences but still requiring precise sieving, it cannot effectively separate particles of different sizes. This means that the sieved manganese powder may still contain particles that do not meet the particle size requirements, affecting product quality.

[0006] 3. Poor installation stability. In existing technology, the negative pressure main pipeline is located in front of the hopper. However, due to the vibration generated by the discharge device during operation, the connection parts of the negative pressure main pipeline are subjected to repeated impact forces, causing the connecting bolts to loosen and reducing the installation stability of the equipment.

[0007] 4. Poor dust removal effect. Similarly, because the existing negative pressure main pipe is located in front of the hopper, vibrations from the discharge device can cause loose connections in the negative pressure pipe and turbulent airflow. This reduces the dust collection capacity of the negative pressure main pipe, making it unable to effectively collect the dust generated in the hopper. Consequently, the dust concentration in the workshop increases, affecting the air quality of the production environment and posing a health hazard to operators. Utility Model Content

[0008] This invention provides a manganese powder screening device, which can solve the problems of low screening efficiency and poor filtration effect of existing devices for manganese powder.

[0009] This application provides the following technical solution: a manganese powder screening device, including a screening mechanism, multiple hoppers arranged in rows above the screening mechanism, and a dust removal mechanism connected to the hoppers;

[0010] The screening mechanism includes a frame, multiple screening chambers arranged in rows fixed on the frame, and screens fixed inside the screening chambers. A feed inlet is provided above the screening chamber, and a hopper is located directly above the feed inlet. The screen has multiple layers, and the screen is inclined from one end of the feed inlet of the screening chamber to the other end. The mesh count of the multiple screens increases sequentially from top to bottom.

[0011] Beneficial effects:

[0012] 1. High screening efficiency. Multi-layered screens can simultaneously screen manganese powder of different particle sizes. Within the same timeframe, different layers of screens can trap manganese powder with varying particle sizes, effectively parallelizing the screening process and significantly reducing overall screening time. Furthermore, the multi-layered screens increase the screening area, allowing more manganese powder to participate in the screening process simultaneously compared to existing single-layered screens, thus increasing screening output per unit time and ultimately improving screening efficiency. The inclined screen design allows manganese powder to move more quickly to the lower end of the screen, reducing powder accumulation and ensuring continuous and smooth passage, further enhancing screening efficiency.

[0013] 2. Excellent filtration effect. The multi-layered screen with progressively increasing mesh size allows for the grading and sieving of manganese powder. The top layer, with its smaller mesh size, intercepts larger particles first, preventing them from entering and clogging the lower screens. This ensures that the lower screens can focus on sieving smaller particles. This step-by-step sieving method allows for more precise separation of manganese powder of different particle sizes, improving filtration accuracy. Furthermore, this grading and sieving process can produce manganese powder products of different particle sizes, meeting the diverse particle size requirements of different customers and achieving precise filtration and classification of manganese powder.

[0014] Furthermore, it also includes columns located on both sides of the screening mechanism and a crossbeam fixed between the columns, with the hopper fixed on the crossbeam.

[0015] Beneficial effects:

[0016] 1. Good installation stability. The columns are located on both sides of the screening mechanism, like the "skeleton" of the entire device. They can bear the weight from the hopper above and the structure itself, providing solid support for the entire device. The columns usually have high strength and rigidity, which can resist a certain degree of external impact and vibration, ensuring the stability of the device during operation.

[0017] 2. High integration. Placing the screening mechanism above the hopper results in a compact layout that significantly saves space. Furthermore, since the columns are the main support pillars in the factory and are typically designed against a wall, the entire unit only needs to occupy a narrow space on one side of the wall, avoiding the need for a large area. This is particularly suitable for production workshops with limited space. Compared to decentralized screening equipment, there is no need to reserve a large amount of connection and operating space between components, making the workshop layout simpler and more efficient. Additionally, a passageway can be set above the beams, allowing the hopper's support structure to be fixed at the bottom of the passageway, improving the hopper's installation stability and making more rational use of factory space.

[0018] Furthermore, the dust removal mechanism also includes a negative pressure main pipe fixed between the columns, with an upper pipe and a lower pipe connected to the negative pressure main pipe. The end of the upper pipe away from the negative pressure main pipe is connected to the feeding port of the hopper, and the end of the lower pipe away from the negative pressure main pipe is connected to the discharging port of the hopper.

[0019] Beneficial effects: Excellent dust removal efficiency. The negative pressure main pipe of the dust removal mechanism is fixed between the columns, providing an independent and stable support structure for the main pipe. The columns themselves have strong load-bearing capacity and stability, capable of supporting the weight of the negative pressure main pipe and its auxiliary pipes. When the screening mechanism vibrates during operation, since there is no direct rigid connection between the negative pressure main pipe and the screening mechanism, the vibration is not directly transmitted to the negative pressure main pipe. This allows the negative pressure main pipe to maintain a relatively stable state, avoiding the problem of pipe loosening or displacement caused by vibration, which leads to turbulent negative pressure airflow, thus ensuring the stability of the dust removal effect.

[0020] Furthermore, a support block is fixed on the screening chamber, a compression spring is fixed below the support block, the lower end of the compression spring is fixed on the frame, and a vibration motor is fixed at the bottom of the screening chamber.

[0021] Beneficial effects: The compression spring is elastic. When the screening device is running, the vibrating motor will cause the screening chamber to vibrate. While supporting the screening chamber, the compression spring can amplify the vibration, making the screening chamber vibrate more regularly and strongly. This helps the manganese powder to be better dispersed and flow on the screen, thereby increasing the contact opportunity between the manganese powder and the screen and improving screening efficiency and accuracy.

[0022] Furthermore, butterfly valves are installed on the upper and lower pipes.

[0023] Beneficial effects: Butterfly valves can precisely control the flow rate of negative pressure air in the upper and lower pipes by rotating the valve plate. This allows operators to flexibly adjust the opening of the butterfly valve according to the dust generation at the feed and discharge ports of the hopper during actual production, thus avoiding unnecessary energy waste.

[0024] Furthermore, the lower end of the hopper is a flared section.

[0025] Beneficial effects: Due to the flared shape providing more space, the contact time and area between manganese powder and the suction airflow are increased during the falling process, giving the dust more opportunities to be carried by the airflow and thus increasing the probability of dust capture. More dust can smoothly enter the lower pipe and be ultimately collected and processed by the dust removal mechanism, improving the dust removal efficiency of the entire screening device. Attached Figure Description

[0026] Figure 1 This is the main structural view of the present invention.

[0027] Figure 2 for Figure 1 Right view of one of the dust removal mechanisms. Detailed Implementation

[0028] The following detailed description illustrates the specific implementation method:

[0029] The markings in the attached diagram of the instruction manual include: column 1, hopper 2, negative pressure main pipe 3, flared section 4, upper pipe 5, lower pipe 6, operating platform 7, support 8, screening bin 9, support block 10, left outlet 11, middle outlet 12, right outlet 13, compression spring 14, vibrating motor 15, and crossbeam 16.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, the manganese powder screening device includes a column 1, a crossbeam 16 fixed on the column 1, multiple screening mechanisms arranged in rows fixed on the crossbeam 16, multiple hoppers 2 arranged in rows above the screening mechanisms, and a dust removal mechanism connected to the hoppers 2. The column 1 is located on both sides of the screening mechanism and is set close to the wall of the plant. Figure 1 Only one side of the column 1 is shown. The crossbeam 16 is fixed between the columns 1, and a passageway can be set above the crossbeam 16.

[0032] The screening mechanism includes a frame on the ground, a row of screening chambers 9 fixed on the frame, and multiple layers of screens fixed inside the screening chambers 9. A feed inlet is located above the screening chambers 9, and a hopper 2 is located directly above the feed inlet. The lower end of the hopper 2 is a flared section 4, which contains a flap valve. In this embodiment, two layers of screens are arranged, tilted from one end of the feed inlet of the screening chamber 9 to the other, dividing the internal space of the screening chamber 9. In this embodiment, the screening chamber 9 is divided into three layers, and the mesh size of the multiple screens increases sequentially from top to bottom. The screening chamber 9 has a left outlet 11, a middle outlet 12, and a right outlet 13, as shown below. Figure 2 The three outlets shown are staggered, with the upper layer connected to the middle outlet 12 of the screening chamber 9, the middle layer connected to the right outlet 13, and the lower layer connected to the left outlet 11. Because... Figure 1 The left outlet 11, middle outlet 12, and right outlet 13 of the middle screening chamber 9 are located in different directions (left, middle, and right), respectively. For ease of demonstration, in Figure 2 The details of the interior of the outlet after the half-sectional view of the screening chamber 9 are omitted. However, those skilled in the art will know that the connection between each layer of screen and the three outlets can be used to set corresponding ramps inside the screening chamber 9 to guide the outlet positions in the screening chamber 9 into three different outlet structures: left, center, and right. A support block 10 is fixed on the screening chamber 9, and a compression spring 14 is fixed below the support block 10. The lower end of the compression spring 14 is fixed to the frame, and a vibration motor 15 is fixed at the bottom of the screening chamber 9.

[0033] The dust removal mechanism also includes a negative pressure main pipe 3 that is horizontally fixed between the columns 1. An upper pipe 5 and a lower pipe 6 are connected to the negative pressure main pipe 3. The end of the upper pipe 5 away from the negative pressure main pipe 3 is connected to the feeding port of the hopper 2, and the end of the lower pipe 6 away from the negative pressure main pipe 3 is connected to the discharging port of the hopper 2. Butterfly valves are provided on the upper pipe 5 and the lower pipe 6.

[0034] An operating platform 7 is also provided between each screening mechanism so that operators can stand on it and operate the valves on the hopper 2, upper pipe 5, and lower pipe 6.

[0035] The method of using this device is as follows:

[0036] Raw materials are added through the feeding port above hopper 2. During feeding, the negative pressure airflow of the negative pressure main pipe 3 adsorbs dust at the feeding port through the upper pipe 5. When the raw materials fall from hopper 2 into screening chamber 9, the negative pressure airflow of the negative pressure main pipe 3 adsorbs dust at the flared section 4 through the lower pipe 6. After the raw materials enter the screening chamber 9, the entire screening chamber 9 vibrates due to the combination of the vibration motor 15 and the compression spring 14. This causes the multi-layer screens to screen the manganese powder raw materials in the screening chamber 9 for different particle sizes. At the same time, different layers of screens can respectively intercept manganese powder of different particle size ranges, which is equivalent to parallelizing the screening process, greatly shortening the overall screening time and thus improving screening efficiency. The inclined screens allow the manganese powder to move more quickly to the lower end of the screen, reducing the accumulation of manganese powder on the screen and ensuring that the manganese powder can pass through the screen continuously and smoothly, further improving screening efficiency. Furthermore, the multi-layered screen with progressively increasing mesh size allows for the grading and sieving of manganese powder. The uppermost screen, with its smaller mesh size, intercepts larger particles first, preventing them from entering the lower screens and causing blockages. This ensures that the lower screens can focus on sieving smaller particles. This step-by-step sieving method allows for more precise separation of manganese powder of different particle sizes, improving filtration accuracy. Finally, the raw materials from different layers are discharged through the left outlet 11, the middle outlet 12, and the right outlet 13 for bagging. This grading and sieving process yields manganese powder products of different particle sizes, meeting the diverse particle size requirements of different customers and achieving precise filtration and classification of manganese powder.

[0037] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A manganese fines screening apparatus characterized by: The dust removal mechanism comprises a plurality of hoppers arranged in rows above the screening mechanism and a dust removal mechanism communicated with the hoppers.

2. The manganese powder sieving apparatus of claim 1, wherein: The screening mechanism comprises a rack, a plurality of screening bins fixed on the rack and a screen fixed in the screening bin.

3. The manganese fines screening apparatus of claim 2, wherein: The screen is provided with a plurality of layers, and the screen is arranged obliquely from one end of the screening bin to the other end.

4. The manganese fines screening apparatus of claim 3, wherein: The dust removal mechanism further comprises a negative pressure main pipe fixed between the columns, and an upper pipe and a lower pipe communicated with the negative pressure main pipe.

5. The manganese fines screening apparatus of claim 4, wherein: The screening bin is fixed with a supporting block, and the supporting block is fixed with a compression spring below.

6. The manganese powder sieving apparatus of claim 5, wherein: The lower end of the compression spring is fixed on the rack. The bottom of the screening bin is fixed with a vibrating motor. The upper pipe and the lower pipe are provided with butterfly valves. The lower end of the hopper is an expanded section.

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