A screening device for the production of rigid press-fit lining materials
By using ultrasonic vibration and tilt adjustment mechanisms, combined with detachable screens and cleaning devices, the problem of screen wear and clogging in the production of hard press-fit lining materials is solved, achieving efficient screening and low-cost maintenance, and improving production efficiency and equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI HAOXING REFRACTORY FURNACE CHARGE
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-17
AI Technical Summary
The screens of existing screening devices used in the production of hard press-fit lining materials are easily worn by hard aggregates, resulting in reduced screening accuracy. Furthermore, they are prone to clogging when containing fine powder or damp materials, which affects production efficiency.
It employs ultrasonic vibration combined with an angle adjustment mechanism, along with a detachable screen design and a cleaning mechanism, to achieve high-frequency vibration that breaks down the cohesion of materials, adjusts the screen angle, and is equipped with a negative pressure fan dust collection system, simplifying the screen replacement and cleaning process.
It improves screening accuracy and production continuity, reduces equipment maintenance costs and dust pollution risks, and extends equipment lifespan.
Smart Images
Figure CN224507602U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening device technology, specifically a screening device for the production of hard press-fit lining materials. Background Technology
[0002] The screening device for hard press-in lining production is a grading and screening equipment specifically designed for refractory materials (such as silicon carbide and high-alumina press-in materials) used in blast furnace lining repair. It typically adopts a multi-layer linear vibrating screen structure, which generates directional vibration through dual motor drive. Using screens with different mesh sizes, the material is separated into 3-7 grades according to particle size range. Carbon steel or stainless steel materials can be selected to meet the wear resistance and high temperature resistance requirements of refractory materials. Its core function is to remove ultrafine powder and large particle impurities from the lining material, ensuring that the press-in material has a uniform particle size to meet the requirements of fluidity, penetration and density after curing during high-pressure injection.
[0003] For example, the Chinese authorized patent CN212493836U, entitled "A Refractory Material Screening Device", includes a support frame, a guide cylinder fixedly installed on the top of the support frame, a support frame welded above one end of the guide cylinder, a motor bolted to the support frame, a transmission gear connected to the output shaft of the motor through a coupling, one end of the guide cylinder near the support frame being lower than the other end, and a discharge port welded below the guide cylinder.
[0004] The existing vibrating screens are easily worn by hard aggregates such as corundum and magnesia, resulting in reduced screening accuracy and short equipment life. Moreover, when the screen contains fine powder or wet materials, it is easy to clog, requiring frequent shutdowns for cleaning, which affects production efficiency. Therefore, they do not meet the current needs. In response, we propose a screening device for the production of hard press-fit lining materials. Utility Model Content
[0005] The purpose of this invention is to provide a screening device for the production of hard press-fit lining materials, so as to solve the problems mentioned in the background art where the screening device is easily ground by hard aggregates and the screen is blocked by fine powder or wet materials.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a screening device for the production of rigid press-fit lining material, comprising a base, fixed seats on both sides above the base, an mounting seat fixedly mounted on the front side of the upper end of the base, and the mounting seat connected to the fixed seats via a rotating shaft, a fixed plate between the two fixed seats, a detachable screen assembly installed inside the fixed plate, a coarse particle outlet at the front end of the screen assembly, a coarse particle collection chamber at the position corresponding to the coarse particle outlet on the base, a fine material chamber at the middle position of the base, an angle adjustment mechanism at the rear end of the screen assembly for adjusting the material movement speed and residence time, and multiple ultrasonic vibrators on both sides of the bottom of the screen assembly.
[0007] Preferably, the screen assembly includes a screen mounting frame, in which a screen is fixedly mounted. The front and rear ends of both sides of the screen mounting frame are provided with sliding grooves, and insert plates are slidably mounted inside the sliding grooves. The inner side of the fixed plate is provided with a support platform for supporting the screen mounting frame, and the front and rear sides of the inner side of the fixed plate are provided with insertion ports for inserting and cooperating with the insert plates.
[0008] Preferably, the tilt adjustment mechanism includes a hydraulic lifting device fixedly installed at the rear end of the base. The movable end of the hydraulic lifting device is equipped with a connecting sleeve, and the connecting sleeve has a round hole. A connecting shaft passing through the round hole on the connecting sleeve is fixedly installed at the rear end of the bottom of the fixed base.
[0009] Preferably, multiple elastic support mechanisms are provided on the upper and lower sides of both sides of the fixed plate. The elastic support mechanism includes a damper and a spring. The upper and lower ends of the damper are fixed to the fixed plate and the fixed seat, respectively, and the spring is arranged outside the damper.
[0010] Preferably, an ultrasonic generator is installed inside the base, and the output end of the ultrasonic generator is electrically connected to the ultrasonic vibrator.
[0011] Preferably, each of the fixed bases is provided with a transmission plate at its upper end, and a cleaning plate is installed between the transmission plates. The bottom of the cleaning plate is provided with bristles that contact the screen assembly. The transmission plate moves the cleaning plate back and forth through a lead screw.
[0012] Preferably, the upper end of the base is provided with an outer cover, the top of the outer cover is equipped with a dust collection box, the rear end of the dust collection box is equipped with a negative pressure fan, and the upper end of the inner side of the outer cover is provided with a dust suction hood, which is connected to the dust collection box through a pipe.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model uses ultrasonic vibration combined with an angle adjustment mechanism to screen materials above. Before use, the hydraulic lifting device is controlled to push the connecting sleeve at its movable end against the connecting shaft. The front end of the screen mechanism is rotatably connected via a mounting base. Therefore, under the action of the hydraulic lifting device, the tilt angle of the screen can be adjusted. When the material enters from the rear, the ultrasonic generator built into the base is turned on. The ultrasonic generator drives the vibrator at the bottom of the screen to generate high-frequency vibration, which can effectively break the cohesion between materials and promote the rapid dispersion and screening of easily agglomerated fine powder or wet materials. With the adjustable screen tilt angle, the movement speed and residence time of the material on the screen surface can be precisely controlled. Increasing the tilt angle can accelerate the material's downward speed, which is suitable for working conditions with large processing volume and slightly lower precision requirements; decreasing the tilt angle can prolong the screening time and achieve fine grading.
[0015] 2. This utility model features a detachable screen design. During installation, simply place the screen on the support platform inside the fixed plate to limit its position. Then, the user simply pulls the insert plate inside the slide groove, moving one end towards the insertion hole on the inside of the fixed plate to secure it. This simplifies the installation and disassembly process, allowing operators to quickly replace the screen without the need for complex tools, reducing downtime for equipment maintenance and significantly improving production continuity and efficiency. In daily use, if the screen experiences localized wear or damage, the damaged screen can be quickly disassembled and replaced without replacing the entire screening device, reducing equipment maintenance costs. Furthermore, it can quickly switch to suitable screens for screening hard pressed lining materials with different production batches and particle size requirements, enhancing the equipment's adaptability to diverse production needs.
[0016] 3. This utility model features a cleaning mechanism. After the device is in use, the motor at the rear end of the transmission plate is turned on, causing the internal screw transmission mechanism to move the cleaning plate, which in turn causes the brush bristles at the lower end to clean the screen. During the cleaning process, a negative pressure fan is turned on, allowing the air inside the outer casing to be continuously supplied to the fan through the pipe, creating a high pressure difference with the outside. As a result, the floating dust inside the outer casing is sucked into the dust collection box along with the air. This not only reduces the amount of dust flying in the workshop, improves the working environment, and reduces the health risk of operators inhaling dust, but also prevents dust from adhering to other parts of the equipment, reducing wear and tear caused by dust accumulation and extending the overall service life of the equipment. Attached Figure Description
[0017] Figure 1 This is a perspective view of the first embodiment of the present invention;
[0018] Figure 2 For the present utility model Figure 1 Enlarged view of a portion of region A in the middle;
[0019] Figure 3 This is another perspective view of the first embodiment of the present invention;
[0020] Figure 4 This is a schematic diagram of the connection structure between the fixing base and the screen mechanism in the first embodiment of this utility model;
[0021] Figure 5 This is a side view of the first embodiment of the present invention;
[0022] Figure 6 This is a perspective view of the second embodiment of the present invention.
[0023] In the diagram: 1. Base; 2. Fixing seat; 3. Fixing plate; 4. Screen mounting frame; 5. Screen; 6. Coarse particle outlet; 7. Coarse particle collection chamber; 8. Mounting seat; 9. Fine material chamber; 10. Transmission plate; 11. Cleaning plate; 12. Slide groove; 13. Insert plate; 14. Support platform; 15. Hydraulic lifting device; 16. Connecting shaft; 17. Connecting sleeve; 18. Ultrasonic vibrator; 19. Outer cover; 20. Dust collection box; 21. Negative pressure fan. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] Example 1:
[0026] Please see Figure 1-4 An embodiment of this utility model provides a screening device for the production of rigid press-fit lining material, including a base 1, fixed seats 2 on both sides above the base 1, an mounting seat 8 fixedly mounted on the front side of the upper end of the base 1, and the mounting seat 8 connected to the fixed seat 2 via a rotating shaft, a fixed plate 3 between the two fixed seats 2, a detachable screen assembly installed inside the fixed plate 3, a coarse particle outlet 6 at the front end of the screen assembly, a coarse particle collection chamber 7 at the position of the base 1 corresponding to the coarse particle outlet 6, a fine material chamber 9 at the middle position of the base 1, an inclination adjustment mechanism at the rear end of the screen assembly for adjusting the movement speed and residence time of the material, and multiple ultrasonic vibrators 18 on both sides of the bottom of the screen assembly;
[0027] Material enters from the rear end of the screen assembly. The ultrasonic generator in the base 1 powers the ultrasonic vibrator 18, causing it to generate high-frequency vibrations that are transmitted to the screen assembly, disrupting the material's cohesion. Simultaneously, the tilt adjustment mechanism adjusts the screen assembly's inclination angle, altering the material's trajectory and residence time on the screen surface. Coarse particles, unable to pass through the screen, roll from the coarse particle outlet 6 into the coarse particle collection chamber 7; fine particles pass through the screen and fall into the fine particle chamber 9. The coordinated adjustment of ultrasonic vibration and screen tilt angle allows for precise control of screening efficiency and accuracy. For large throughput, the tilt angle can be increased for rapid screening, while for fine grading, the tilt angle can be decreased. Furthermore, a single unit can complete multi-stage screening.
[0028] Please see Figure 2 The screen assembly includes a screen mounting frame 4, a screen 5 is fixedly installed inside the screen mounting frame 4, and sliding grooves 12 are provided at the front and rear ends on both sides of the screen mounting frame 4. Insert plates 13 are slidably installed inside the sliding grooves 12. Support platforms 14 for supporting the screen mounting frame 4 are provided on the inner side of the fixing plate 3. Inserts that can be inserted into the insert plates 13 are provided at the front and rear of the inner side of the fixing plate 3.
[0029] When installing the screen assembly, place the screen mounting frame 4 on the support platform 14 inside the fixed plate 3 for positioning. Then, pull the insert plate 13 in the slide groove 12 to insert it into the socket inside the fixed plate 3, thereby fixing the screen mounting frame 4. To disassemble, reverse the operation of the insert plate 13 to remove the screen assembly. This detachable design greatly simplifies the screen replacement process, requiring no complicated tools and allowing replacement to be completed in minutes. This significantly reduces equipment downtime for maintenance, improving production continuity and efficiency. Furthermore, it allows for quick replacement of screens with localized wear or damage, reducing maintenance costs. It also enables rapid switching of compatible screens according to different production needs, enhancing equipment versatility and utilization.
[0030] Please see Figure 3 The tilt adjustment mechanism includes a hydraulic lifting device 15 fixedly installed at the rear end of the base 1. A connecting sleeve 17 is installed on the movable end of the hydraulic lifting device 15, and the connecting sleeve 17 has a round hole. A connecting shaft 16 passing through the round hole on the connecting sleeve 17 is fixedly installed at the rear end of the bottom of the fixed base 2. After the hydraulic lifting device 15 is started, its movable end drives the connecting sleeve 17 to move up and down along the connecting shaft 16. Since the front end of the screen assembly is rotatably connected through the mounting base 8, the rear end changes height with the lifting and lowering of the connecting sleeve 17, thereby achieving adjustment of the tilt angle of the screen assembly. The hydraulic lifting device achieves stepless adjustment of the screen tilt angle, and can precisely control the particle size of the material to be screened according to different material characteristics and production needs; whether it is dry or wet material, the optimal screening effect can be achieved by adjusting the angle and the intensity of ultrasonic vibration.
[0031] Please see Figure 4 Multiple elastic support mechanisms are provided on the upper and lower sides of the fixed plate 3. The elastic support mechanism includes a damper and a spring. The upper and lower ends of the damper are fixed to the fixed plate 3 and the fixed seat 2 respectively, and the spring is set outside the damper. When the screen assembly vibrates under the action of the ultrasonic vibrator 18, or when the tilt adjustment mechanism adjusts the screen angle, the spring and damper in the elastic support mechanism work together. The spring absorbs the vibration energy, and the damper suppresses the vibration amplitude and frequency through its own damping characteristics, stabilizing the vibration state and position of the screen assembly.
[0032] Please see Figure 5 An ultrasonic generator is installed inside the base 1, and the output end of the ultrasonic generator is electrically connected to the ultrasonic vibrator 18. After the ultrasonic generator is powered on, it generates a high-frequency electrical signal and transmits it to the ultrasonic vibrator 18. The ultrasonic vibrator 18 converts the electrical signal into mechanical vibration, causing the screen assembly to generate high-frequency vibration, which acts on the material on the screen.
[0033] Example 2:
[0034] Please see Figure 4Each fixed base 2 has a transmission plate 10 at its upper end, and a cleaning plate 11 is installed between the transmission plates 10. The bottom of the cleaning plate 11 has bristles that contact the screen assembly. The transmission plates 10 move the cleaning plate 11 back and forth via a screw drive. After the device is in use, the motor at the rear end of the transmission plate 10 is turned on. The motor drives the screw drive mechanism to rotate, and when the screw rotates, it pushes the cleaning plate 11 to move back and forth along the transmission plate 10. The bristles at the bottom of the cleaning plate 11 clean the screen assembly and remove the material remaining on the screen. The cleaning mechanism can quickly remove the material remaining on the screen, especially particles stuck in the screen holes, to avoid material accumulation and clogging of the screen. This effectively prevents the problem of reduced screening efficiency caused by screen clogging and ensures continuous and efficient operation of the equipment. Moreover, the cleaning process does not require manual cleaning.
[0035] Please see Figure 6 The upper end of the base 1 is provided with an outer cover 19, the top of the outer cover 19 is equipped with a dust collection box 20, the rear end of the dust collection box 20 is equipped with a negative pressure fan 21, the upper end of the inner side of the outer cover 19 is provided with a dust suction hood, and the dust suction hood is connected to the dust collection box 20 through a pipe.
[0036] During the cleaning of the screen assembly, the negative pressure fan 21 is turned on. The operation of the negative pressure fan 21 creates a negative pressure inside the dust collection box 20. Air inside the outer cover 19 is continuously drawn into the dust collection box 20 through the dust suction hood and pipes. A high pressure difference is created between the outer cover 19 and the outside, thereby drawing the dust generated during the cleaning process into the dust collection box 20 along with the air. The negative pressure dust collection system can effectively reduce dust in the workshop, improve the working environment, reduce the health risk of operators inhaling dust, and meet occupational health and safety standards. At the same time, it prevents dust from adhering to other parts of the equipment, reduces wear and tear caused by dust accumulation, and extends the overall service life of the equipment.
[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A screening device for hard-pressed lining production, comprising a base (1), characterised in that: The base (1) has fixed seats (2) on both sides above it. The upper front of the base (1) is fixed with mounting seats (8), and the mounting seats (8) are connected to the fixed seats (2) through a rotating shaft. A fixed plate (3) is provided between the two fixed seats (2). A detachable screen assembly is installed inside the fixed plate (3). The front end of the screen assembly is provided with a coarse particle outlet (6). The base (1) is provided with a coarse particle collection chamber (7) at the position corresponding to the coarse particle outlet (6). A fine material chamber (9) is provided in the middle position of the base (1). The rear end of the screen assembly is provided with an angle adjustment mechanism for adjusting the movement speed and residence time of the material. Multiple ultrasonic vibrators (18) are provided on both sides of the bottom of the screen assembly.
2. A screening device for rigid pressboard production according to claim 1, characterized in that: The screen assembly includes a screen mounting frame (4), in which a screen (5) is fixedly installed. The front and rear ends of both sides of the screen mounting frame (4) are provided with sliding grooves (12). Insert plates (13) are slidably installed inside the sliding grooves (12). The inner side of the fixing plate (3) is provided with a support platform (14) for supporting the screen mounting frame (4). The front and rear sides of the inner side of the fixing plate (3) are provided with insertion ports that are inserted and matched with the insert plates (13).
3. A screening device for rigid pressboard production according to claim 1, characterized in that: The tilt adjustment mechanism includes a hydraulic lifting device (15) fixedly installed at the rear end of the base (1). The movable end of the hydraulic lifting device (15) is equipped with a connecting sleeve (17), and the connecting sleeve (17) is provided with a round hole. The rear end of the bottom of the fixed seat (2) is fixedly installed with a connecting shaft (16) passing through the round hole on the connecting sleeve (17).
4. A screening device for rigid pressboard production according to claim 1, characterized in that: Multiple elastic support mechanisms are provided on the upper and lower sides of the fixed plate (3). The elastic support mechanism includes a damper and a spring. The upper and lower ends of the damper are fixed to the fixed plate (3) and the fixed seat (2) respectively, and the spring is set outside the damper.
5. A screening device for rigid pressboard production according to claim 1, characterized in that: An ultrasonic generator is installed inside the base (1), and the output end of the ultrasonic generator is electrically connected to the ultrasonic vibrator (18).
6. A screening device for rigid pressboard production according to claim 1, characterized in that: The upper end of each fixed base (2) is provided with a transmission plate (10), and a cleaning plate (11) is installed between the transmission plates (10). The bottom of the cleaning plate (11) is provided with bristles that are in contact with the screen assembly. The transmission plate (10) moves the cleaning plate (11) back and forth through the screw drive.
7. A screening device for producing rigid press-fit lining material according to claim 1, characterized in that: The upper end of the base (1) is provided with an outer cover (19), the top of the outer cover (19) is equipped with a dust collection box (20), the rear end of the dust collection box (20) is equipped with a negative pressure fan (21), the upper end of the inner side of the outer cover (19) is provided with a dust suction hood, and the dust suction hood is connected to the dust collection box (20) through a pipe.