A high-efficiency linear vibration screen device for soft magnetic manganese-zinc ferrite

Abstract

The utility model relates to the soft magnetic ferrite material production technical field discloses a kind of high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite, it includes: sieve box, vibrating motor, damping spring, side support, base and stamping plate screen mesh;Side support is fixedly installed outside sieve box, damping spring is installed between side support and base;Its characterized in that: vibrating motor is installed outside sieve box outer wall;Stamping plate screen mesh is mainly composed of upper layer screen mesh and lower layer screen mesh, upper layer screen mesh and lower layer screen mesh are connected;Two inverted triangular box bodies are installed on the bottom surface of sieve box, inverted triangular box body and sieve box are sealingly connected;Pulsed vibration air hammer is installed on the upper position of the outer wall of inverted triangular box body, two inverted triangular box bodies are respectively provided with access hole.The utility model can automatically clean stamping plate screen mesh during screening process or intermittently, effectively removes the fine powder that blocks mesh, greatly reduces the frequency of cleaning during shutdown, and guarantees the continuous and stable operation of pre-burning process.

Description

Technical Field

[0001] This utility model relates to the field of soft magnetic ferrite material production technology, and in particular to a high-efficiency linear vibrating screen device for soft magnetic manganese zinc ferrite. Background Technology

[0002] In the production process of soft magnetic manganese zinc ferrite, pre-firing is a key step. Before pre-firing, the red pellets obtained by the pelletizing process (hereinafter referred to as "pellet") need to be sieved to separate pellets with qualified diameter for sintering, and to remove fine powder that affects flowability and reaction uniformity.

[0003] Currently, some production lines use drum-type screening devices. Although these devices have a large screening area, they are bulky, inconvenient to install and maintain, and for certain spherical materials with specific particle size distributions, there is still room for improvement in screening efficiency. The main problems are as follows: 1. Screen clogging: The trace amounts of moisture and static electricity contained in the ball material can easily cause fine powder to adhere to the screen surface, causing the mesh to become clogged. Frequent machine shutdowns are required for cleaning, which affects the continuity of production.

[0004] 2. Decreased screening efficiency: As the operating time increases, the effective screening area decreases due to blockage and material coverage, and the screening efficiency drops rapidly, causing unqualified fine powder to enter the rotary kiln.

[0005] 3. Fluctuations in pre-firing quality: Insufficient sieving of fine powder will lead to uneven flowability and heating of the material layer in the kiln during the pre-firing process, which in turn will cause fluctuations in key indicators such as magnetization and chloride ions, ultimately affecting the sintering density and electrical properties of the finished product.

[0006] Reference CN110711698A discloses a linear vibrating sieving device for monocrystalline and polycrystalline silicon materials. The screen box includes a housing, a vibrating motor, and multiple sets of screens. The multiple sets of screens are installed inside the housing, with the mesh size decreasing from top to bottom. The vibrating motor disperses the silicon material on the screens through vibration. The support mechanism includes a first support leg, a second support leg, a height adjustment component, a spring, and a rotating component. The first support leg is connected to one end of the height adjustment component. The other end of the height adjustment component is connected to one end of the second support leg and is used to adjust the relative distance between the first and second support legs. The other end of the second support leg is connected to one end of the spring, and the other end of the spring is connected to the rotating component. The rotating component is rotatably mounted on the housing, causing the support mechanism to rotate relative to the housing. While this device can change the overall height, it requires cleaning the stamped plate screens during the sieving process, affecting the continuous and stable operation of the pre-calcination process.

[0007] Therefore, there is an urgent need for a linear vibrating screen device with high screening efficiency, good anti-clogging performance, and the ability to stably ensure the quality of feed material in the pre-calcination process. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite. This device aims to achieve efficient and continuous screening operations through optimized structural design, significantly reducing screen clogging, ensuring stable quality of the pellets entering the pre-fired rotary kiln, and thus improving the performance consistency of the final product.

[0009] To solve the above technical problems, this utility model provides a high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite, including: a screen box, a vibrating motor, damping springs, side supports, a base, and a stamped plate screen; the stamped plate screen is installed inside the screen box; a side support is fixedly installed on the outside of the screen box, and damping springs are installed between the side support and the base; a vibrating motor is installed on the outer wall of the screen box; the stamped plate screen is mainly composed of an upper screen and a lower screen, which are connected; two inverted triangular boxes are installed on the bottom surface of the screen box, and the inverted triangular boxes are sealed to the screen box; a pulse-type vibrating air hammer is installed on the upper part of the outer wall of the inverted triangular boxes, and maintenance ports are provided on the two inverted triangular boxes respectively.

[0010] By adopting the above technical solutions, the sieving area is increased, the sieving efficiency is improved, and the frequency of screen blockage is reduced by installing pulse vibrating air hammers. This allows the fine powder of the ball material to be fully sieved, extends the cycle of rotary kiln wall adhesion, greatly reduces the frequency of shutdown for cleaning, and ensures the continuous and stable operation of the pre-calcination process.

[0011] Preferably, there are two vibrating motors, which are symmetrically installed on both sides of the screen box at the same angle, and the two vibrating motors rotate synchronously in opposite directions.

[0012] By adopting the above technical solution, vibrating motors are symmetrically installed on both sides of the screen box, which improves the amplitude of the linear screen, enhances the sieving effect of fine powder, and makes the sieving effect more obvious.

[0013] Preferably, the stamped plate screen is inclined at 14°-16° inside the screen box.

[0014] By adopting the above technical solution, the upper screen has a larger aperture, which is used to screen out any coarse particles or lumps that may be mixed in; the lower screen has a aperture that is precisely set according to the particle size requirements of the qualified pellets in the pre-firing process, which is used to screen out fine powder that may affect the pre-firing.

[0015] Preferably, the aperture of the lower screen is 3-4 mm.

[0016] By adopting the above technical solution, a lower screen with a 3-4mm aperture is installed inside the linear screen box to increase the screening area and improve screening efficiency.

[0017] Preferably, a feed inlet is provided above the screen box, and the feed pipe of the feed inlet extends into the screen box.

[0018] By adopting the above technical solution, the material continuously enters the screen box from the feed inlet under the action of gravity, and under the action of the vibrating motor, the material moves in a straight line on the screen surface and is screened.

[0019] Preferably, the front end of the screen box is provided with a qualified ball material outlet, and the bottom of the two inverted triangular boxes installed on the bottom surface of the screen box is respectively provided with a coarse material outlet and a fine powder outlet.

[0020] By adopting the above technical solution, the red ball material is screened multiple times to separate and collect coarse and fine particles of different sizes generated during the feeding process.

[0021] Preferably, the two access ports are arranged adjacent to each other.

[0022] By adopting the above technical solution, the two inspection ports are adjacent to each other, which facilitates simultaneous maintenance operations.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. High efficiency and anti-clogging, ensuring continuous production: By setting up two inverted triangular boxes and equipped with multiple pulse-type vibrating air hammers, the screen of the stamping plate can be automatically cleaned during the screening process or during intervals, effectively removing fine powder that clogs the mesh, greatly reducing the frequency of downtime for cleaning, and ensuring the continuous and stable operation of the pre-calcination process.

[0024] 2. Stable screening efficiency: Continuous cleaning action ensures the effective screening area of ​​the stamped plate screen, and the ball material is always kept in a certain position, so that the screening efficiency remains stable throughout the production cycle, avoiding the problem of material leakage due to efficiency decay, and ensuring the uniformity of the pre-calcination process.

[0025] 3. Reasonable structure and convenient maintenance: Adopting a mature and reliable linear vibration principle, the material jumps forward on the screen surface, ensuring thorough screening. Simultaneously, the included inspection door facilitates timely maintenance or replacement of the internal stamped screen, reducing equipment maintenance costs and time.

[0026] 4. Improved pre-calcination quality: The pellets screened by this device have uniform particle size and low fine powder content, which makes them more fluid and heat-receiving in the rotary kiln. This helps to stabilize the magnetization and chemical composition of the pre-calcined material, laying a solid foundation for the consistency of the final product performance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the device body structure of this utility model.

[0028] Figure 2 This is a top view of the internal structure and discharge end of this utility model.

[0029] Figure 3 This is a schematic diagram of the structure of the lower layer screen of this utility model.

[0030] Figure 4 This is a schematic diagram of the feeding end of the equipment body of this utility model.

[0031] Drawing numbers: 1. Screen box; 2. Vibrating motor; 3. Vibration damping spring; 4. Base; 5. Stamped plate screen, 5a. Upper screen, 5b. Lower screen; 6. Inspection port; 7. Feed inlet; 8. Discharge outlet, 8a. Coarse material outlet, 8b. Qualified ball material outlet, 8c. Fine powder outlet; 9. Pulse vibrating hammer; 10. Side support. Detailed Implementation

[0032] like Figure 1-4 As shown, a high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite includes: a screen box 1, a vibrating motor 2, damping springs 3, side supports 10, a base 4, and a stamped plate screen 5. Two sets of damping springs 3 are installed at the front and rear to improve the screening effect of the linear screen during operation. The stamped plate screen 5 is installed inside the screen box 1. Side supports 10 are fixedly installed on the outside of the screen box 1, such as... Figure 2 A vibration damping spring 3 is installed between the side support 10 and the base 4. The screen box 1 is elastically supported on the base 4 by the side support 10 and multiple sets of vibration damping springs 3, as shown below. Figure 4 A vibrating motor 2 is installed on the outer wall of the screen box 1; the stamped plate screen 5 mainly consists of an upper screen 5a and a lower screen 5, which are connected together; two inverted triangular boxes are installed on the bottom surface of the screen box 1, and the inverted triangular boxes are sealed to the screen box 1. A pulse-type vibrating hammer 9 is installed on the upper part of the outer wall of the inverted triangular box. Inspection ports 6 are opened on the sides of the two inverted triangular boxes to facilitate daily observation of the feeding of coarse and fine powders, and to facilitate timely maintenance or replacement of the internal stamped plate screen 5, reducing equipment maintenance costs and time. This application increases the screening area and improves screening efficiency. The addition of the pulse-type vibrating hammer 9 reduces the frequency of screen hole clogging, allowing the fine powder to be fully screened, extending the cycle of wall adhesion in the rotary kiln, greatly reducing the frequency of downtime for cleaning, and ensuring the continuous and stable operation of the pre-calcination process. The pellets screened by this device have uniform particle size and low fine powder content, which makes them more fluid and heat-dissipated in the rotary kiln. This helps to stabilize the magnetization and chemical composition of the pre-fired material, laying a solid foundation for the consistency of the final product's performance.

[0033] Two vibrating motors 2 are symmetrically fixed to the two side walls of the screen box 1 at the same angle, and the two vibrating motors 2 rotate synchronously in opposite directions. When the two vibrating motors 2 rotate synchronously in opposite directions, the excitation forces they generate are superimposed in the direction perpendicular to the motor axis, forming a resultant force in one direction, thereby driving the entire screen box 1 to perform linear reciprocating vibration. The motor power is selected as 0.37kW*2, and the vibration frequency is approximately 970 times / minute. The symmetrical installation of vibrating motors 2 on both sides of the screen box 1 improves the amplitude of the linear screen, enhances the sieving effect of fine powder, and makes the sieving effect of the linear screen more obvious.

[0034] Inside the sieve box 1, a stainless steel stamped screen 5 is installed at an angle of 14°-16°. The upper screen 5a has a larger aperture and is used to remove any coarse particles or lumps that may be mixed in. The lower screen 5b has an aperture precisely set according to the particle size requirements of the qualified pellets in the pre-firing process, for example, 3mm, and is used to remove fine powder that may affect pre-firing. The material is fed into the feed inlet 7 and, under the action of linear vibration, jumps forward along the screen surface, completing the classification. Coarse material is discharged from the coarse material outlet 8a, qualified pellets are collected from the qualified pellet outlet 8b and sent to the rotary kiln for pre-firing, and fine powder is discharged from the fine powder outlet 8c.

[0035] like Figure 3 As shown, the lower screen 5 has a aperture of 3-4 mm, which is configured according to the particle size requirements of the pre-fired pellets. The lower screen 5 with a 3-4 mm aperture is installed inside the linear screen box 1 to increase the screening area and improve screening efficiency.

[0036] A feed inlet 7 is provided above the screen box 1, and the feed pipe of the feed inlet 7 extends into the screen box 1. Under the action of gravity, the material continuously enters the screen box 1 from the feed inlet 7. Under the action of the vibrating motor 2, the material moves in a straight line on the screen surface and is screened.

[0037] The front end of the sieve box 1 is equipped with a qualified ball material outlet 8b. The bottom of the two inverted triangular boxes installed on the bottom surface of the sieve box 1 is respectively equipped with a coarse material outlet 8a and a fine powder outlet 8c. The discharge end of the sieve box 1 is equipped with multiple discharge ports for separating qualified balls, fine powder and coarse impurities, corresponding to materials with different particle size ranges. The red balls are screened multiple times, and coarse and fine particles of different sizes generated during the feeding process are screened and collected.

[0038] Two access ports 6 are arranged adjacent to each other. The proximity of the two access ports 6 facilitates simultaneous maintenance operations.

[0039] The core improvement of this invention lies in the integration of a pulse-type vibrating hammer 9 to reduce material blockage. Located below the screen 5 of the stamping plate, the pulse-type vibrating hammer 9 facilitates the removal of fine powder clogging the screen mesh, allowing it to fall off under the influence of vibration and gravity. This reduces material accumulation on the inner wall of the inverted triangular box, preventing excessive fine powder from causing blockage.

[0040] The working principle of this utility model is as follows: After pre-firing begins, the pellets in the pre-firing hopper are weighed by a belt scale and then dried in the drying kiln. The pre-firing pellets continuously enter the screen box 1 through the feed inlet 7. Driven by the vibrating motor 2, the material moves linearly on the screen surface and is screened. Simultaneously, the pulse-type vibrating hammer 9 automatically starts at a set frequency to clean the press plate screen 5 in real time, ensuring that the screen holes are unobstructed. The qualified pellets with uniform particle size that have been effectively screened are discharged from the qualified pellet outlet 8b and directly enter the next pre-firing process. By increasing the effective screening area of ​​the linear screen press plate screen 5, the proportion of fine powder entering the rotary kiln is greatly reduced, which extends the cycle of rotary kiln wall adhesion, thereby ensuring the consistency of the pre-firing process and the stability of the final product quality.

[0041] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite, comprising: The screen box comprises a vibrating motor, vibration damping springs, side supports, a base, and a stamped plate screen. The stamped plate screen is installed inside the screen box. Side supports are fixedly installed on the outside of the screen box, and vibration damping springs are installed between the side supports and the base. The screen box is characterized by: a vibrating motor installed on the outer wall of the screen box; the stamped plate screen mainly consists of an upper screen and a lower screen, which are connected; two inverted triangular boxes are installed on the bottom surface of the screen box, and the inverted triangular boxes are sealed to the screen box; a pulse-type vibrating air hammer is installed near the upper part of the outer wall of the inverted triangular boxes, and inspection ports are provided on the two inverted triangular boxes respectively.

2. The high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite as described in claim 1, characterized in that: The number of vibration motors is two, which are symmetrically installed on both sides of the screen box at the same angle, and the two vibration motors rotate synchronously in opposite directions.

3. The high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite as described in claim 1, characterized in that: The stamped plate screen is inclined at 14°-16° inside the screen box.

4. The high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite according to claim 1, characterized in that: The aperture of the lower screen is 3-4 mm.

5. The high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite according to claim 1, characterized in that: The screen box is provided with a feed inlet at the top, and the feed pipe of the feed inlet extends into the screen box.

6. The high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite according to claim 1, characterized in that: The front end of the screen box is provided with a qualified ball material outlet, and the bottom of the two inverted triangular boxes installed on the bottom of the screen box are respectively provided with a coarse material outlet and a fine powder outlet.

7. The high-efficiency linear vibrating screen device for soft magnetic manganese-zinc ferrite according to claim 1, characterized in that: The two access ports are set up adjacent to each other.

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