Wear-resistant polyurethane screen

Abstract

This utility model relates to the field of screen technology and discloses a wear-resistant polyurethane screen, including a polyurethane screen body and an outer frame. The outer frame contains a steel wire screen for initial material contact and impact resistance. Installation grooves are provided on both sides of the outer frame. Support plates for limiting support are fixedly installed on both sides of the steel wire screen, and the support members are slidably connected inside the installation grooves. Buffer components for elastic support of the support components are provided on both the upper and lower sides of the installation grooves. A blocking component for shielding is provided on one side of the front of the outer frame. By sliding the support plates along the installation grooves, the steel wire screen can be easily installed. Then, the blocking component is installed on the front, allowing for material screening. Because the steel wire screen contacts the material first, and the material impacts the steel wire screen, causing the support plates to repeatedly press against the buffer components, a buffering effect is achieved, minimizing the impact on the steel wire screen.

Description

Technical Field

[0001] This utility model relates to the field of screen technology, specifically to a wear-resistant polyurethane screen. Background Technology

[0002] Polyurethane screens are screens or screen plates made from polyurethane (a high molecular weight compound whose main chain contains repeating urethane groups). The material is made by polymerizing binary / multi-isocyanates with hydroxyl compounds. It can be divided into two types: polyester type and polyether type. It has high tensile strength, wear resistance and resilience, and is lightweight, which can reduce the load on equipment.

[0003] A wear-resistant polyurethane screen, disclosed in Chinese Patent Publication No. CN222174878U, includes an upper filter basket and a lower filter basket. The bottom surface of the upper filter basket has a locking block that engages with a slot. The slot is located on the top surface of the lower filter basket, and a second sliding groove is formed on the top surface of the lower filter basket. This invention uses bolts to fix the filter screen within a sliding plate to a first and second sliding groove. Upper and lower support blocks within the upper and lower filter baskets support the filter screen, increasing its impact resistance. These blocks also reduce direct contact between the material and the filter screen during filtration, thus increasing its wear resistance. The fixing bolts facilitate the replacement of filter screens with different pore sizes, adapting to the filtration of various materials. Furthermore, the filter screen can be effectively cleaned, resulting in a long service life.

[0004] In the process of realizing this application, the inventors discovered that the technology has at least the following problems: Although the above technical solution can increase the impact resistance of the filter screen and reduce the wear caused to the filter screen, in actual use, the material will come into contact with the filter frame that is used for initial contact, so it will impact the filter frame, which will cause the filter frame to be subjected to a large impact, and thus it is easy to be damaged and needs to be replaced frequently. Therefore, further improvements can be made. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides the following technical solution: a wear-resistant polyurethane screen, comprising a polyurethane screen body and an outer frame, wherein the polyurethane screen body is fixedly installed inside the outer frame, a support is fixedly installed on the outer bottom of the outer frame, and a fastening bolt for fixing the position is screwed into the inside of the support; a steel wire screen for impact resistance in initial contact with materials is provided inside the outer frame; mounting grooves are provided on both sides of the outer frame; and support plates for limiting support are fixedly installed on both sides of the steel wire screen, and the support plates are slidably connected to... Inside the mounting groove, buffer components for elastically supporting the support plate are provided on both the upper and lower sides. A blocking component is provided on the front side of the outer frame. By sliding the support plate along the mounting groove, the wire mesh can be easily installed. Then, the blocking component is installed on the front side, and the material can be screened. The wire mesh first comes into contact with the material, and as the material impacts the wire mesh, it causes the support plate to squeeze the buffer components back and forth, thus playing a buffering role, minimizing the impact force on the wire mesh and extending its service life.

[0006] As an optimization, the support plate is a T-shaped plate, with slides provided in the middle of both the upper and lower sides of the T-shaped plate, and a number of slots provided at equal intervals on both the upper and lower sides of the T-shaped plate and in the slides, and the slots are set with corresponding buffer components.

[0007] As an optimization, the buffer assembly includes sliders that are slidably connected inside the upper and lower sides of the mounting groove. Buffer springs are fixedly installed between the sliders and the inner walls of the upper and lower sides of the mounting groove. When the T-shaped plate is inserted into the mounting groove, the sliders on the upper and lower sides are squeezed.

[0008] As an optimization, ball bearings are embedded on the opposite sides of the upper and lower sliders. The ball bearings roll along the track of the slide and are correspondingly stuck in the slot. When the T-shaped plate is inserted into the mounting slot, the ball bearings will roll along the track, thereby reducing friction.

[0009] As an optimization, a guide rod is fixedly installed in the middle of the slider, and a guide hole is opened inside the outer frame corresponding to the guide rod, which passes through the mounting groove. The guide rod is slidably inserted into the inside of the guide hole. When the slider is pressed, the guide rod will slide inside the guide hole, thereby guiding the slider.

[0010] As an optimization, the blocking component includes a card plate sleeved on one side of the front of the outer frame, and a baffle is fixedly installed between the two card plates. By sleeved on one side of the front of the outer frame, the baffle can be blocked at the front notch of the outer frame.

[0011] As an optimization, the inner wall of the card plate is glued with an elastic rubber pad, and the rubber pad is tightly pressed against the outer side of the outer frame.

[0012] The beneficial effects of this utility model are: 1. This wear-resistant polyurethane screen, when impacted by materials through the wire mesh, causes the T-shaped plate to move downwards, which in turn compresses the buffer spring below via the slider. The buffer spring provides cushioning and causes the T-shaped plate to move upwards, compressing the buffer spring above, thus achieving a cushioning effect and extending the service life as much as possible.

[0013] 2. This wear-resistant polyurethane screen can be installed by inserting the T-shaped plate along the inside of the mounting groove. The contact groove will cause the upper and lower sliders to slide away from each other along the inner wall of the mounting groove. This will compress the buffer spring and the ball will roll along the slide to reduce friction. The elasticity of the buffer spring will then cause the ball to be locked in the corresponding groove, thereby positioning the T-shaped plate and completing the installation quickly and easily. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram: 1. Polyurethane screen body; 2. Outer frame; 3. Support; 4. Fastening bolt; 5. Steel wire mesh; 6. Mounting groove; 7. Blocking component; 8. T-plate; 9. Slide rail; 10. Card slot; 11. Slider; 12. Buffer spring; 13. Ball bearing; 14. Guide rod; 15. Guide hole; 16. Card plate; 17. Baffle. Detailed Implementation

[0016] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 A wear-resistant polyurethane screen includes a polyurethane screen body 1 and an outer frame 2. The polyurethane screen body 1 is fixedly installed inside the outer frame 2. A support 3 is fixedly installed on the bottom outer side of the outer frame 2. A fastening bolt 4 for fixing the position is screwed into the inside of the support 3. A steel wire screen 5 for impact resistance in contact with materials is provided inside the outer frame 2. Installation grooves 6 are opened on both sides of the outer frame 2. Support plates for limiting support are fixedly installed on both sides of the steel wire screen 5, and the support plates are slidably connected inside the installation grooves 6. The upper and lower sides of the installation grooves 6 are... Both sides are equipped with buffer components for elastic support of the support plate. The front side of the outer frame 2 is equipped with a blocking component 7 for shielding. By sliding the support plate along the mounting groove 6, the wire mesh 5 can be installed. Then, the blocking component 7 is installed on the front side, and the material can be screened. The wire mesh 5 comes into contact with the material first, and as the material impacts the wire mesh 5, it drives the support plate to squeeze the buffer components back and forth, thus playing a buffering role, minimizing the impact on the wire mesh 5 and extending its service life. Please see Figures 2-3 The support plate is a T-shaped plate 8. Slides 9 are provided in the middle of the upper and lower sides of the T-shaped plate 8. Several slots 10 are provided at equal intervals on the upper and lower sides of the T-shaped plate 8 and in the slides 9. The slots 10 are set with buffer components. Please see Figures 2-3 The buffer assembly includes a slider 11 that is slidably connected to the inside of the upper and lower sides of the mounting groove 6. A buffer spring 12 is fixedly installed between the slider 11 and the inner walls of the upper and lower sides of the mounting groove 6. When the T-shaped plate 8 is inserted into the mounting groove 6, the slider 11 on the upper and lower sides will be squeezed, which will cause the slider 11 to compress the buffer spring 12. And through the elasticity of the buffer spring 12 itself, the slider 11 will be driven to squeeze the T-shaped plate 8 in the opposite direction for positioning. Please see Figures 2-3 On the opposite side of the upper and lower sliders 11, there are balls 13 embedded. The balls 13 roll along the track of the slide 9 and are correspondingly stuck in the slots 10. When the T-plate 8 is inserted into the mounting slot 6, the balls 13 will roll along the slide 9, thereby reducing friction. At the same time, the balls 13 will be correspondingly stuck in the slots 10, thereby positioning the T-plate 8. Please see Figures 2-3 A guide rod 14 is fixedly installed in the middle of the slider 11, and a guide hole 15 is opened in the inner part of the outer frame 2 corresponding to the guide rod 14, which passes through the mounting groove 6. The guide rod 14 is slidably inserted into the inside of the guide hole 15. When the slider 11 is pressed, the guide rod 14 will slide inside the guide hole 15, which will guide the slider 11. Please see Figure 4The blocking component 7 includes a card plate 16 fitted on one side of the front of the outer frame 2. The inner wall of the card plate 16 is glued with an elastic rubber pad, and the rubber pad is tightly pressed against the outer side of the outer frame 2. A baffle 17 is fixedly installed between the two card plates 16. By fitting the card plate 16 on one side of the front of the outer frame 2, the baffle 17 can be blocked at the front notch of the outer frame 2, so that a square space is formed inside the outer frame 2, and materials can be poured into the square space for screening.

[0019] In use, first insert the T-shaped plate 8 along the inside of the mounting groove 6, which will then contact the slot 10 and press it. This will cause the upper and lower sliders 11 to slide relatively away from each other along the inner wall of the mounting groove 6, thereby compressing the buffer spring 12. The ball 13 will roll along the slide 9 to reduce friction. The elasticity of the buffer spring 12 will cause the ball 13 to be locked in the slot 10, thus positioning the T-shaped plate 8 and completing the installation of the wire mesh 5. Then, the clamping plate 16 is placed on one side of the front of the outer frame 2, which will block the baffle 17 at the front notch of the outer frame 2, thus forming a square space inside the outer frame 2. Material can then be poured into the square space for screening. At the same time, when the material is poured in for screening, the wire mesh 5 will be impacted, which will cause the T-shaped plate 8 to move downward. This will then compress the buffer spring 12 below through the slider 11, thus providing buffering. The buffer spring 12 will also cause the T-shaped plate 8 to move upward, which will compress the buffer spring 12 above, thus providing a buffering effect.

[0020] In summary, when the wear-resistant polyurethane screen receives material impact through the wire mesh 5, it will cause the T-shaped plate 8 to move downward, which will then compress the buffer spring 12 below through the slider 11. The buffer spring 12 can buffer the impact and also cause the T-shaped plate 8 to move upward, which in turn can compress the buffer spring 12 above, thus playing a buffering role and extending the service life as much as possible. By inserting the T-shaped plate 8 along the inside of the mounting groove 6, it can contact the slot 10 and drive the upper and lower sliders 11 to slide relatively away from each other along the inner wall of the mounting groove 6. This will compress the buffer spring 12, and the ball 13 will roll along the slide 9 to reduce friction. Then, the elasticity of the buffer spring 12 will drive the ball 13 to be locked in the slot 10, thereby positioning the T-shaped plate 8 and completing the installation quickly and easily.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0023] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A wear-resistant polyurethane screen, comprising a polyurethane screen body (1) and an outer frame (2), wherein the polyurethane screen body (1) is fixedly installed inside the outer frame (2), and a support (3) is fixedly installed on the bottom outer side of the outer frame (2), and a fastening bolt (4) for tight positioning is screwed into the inside of the support (3), characterized in that: The outer frame (2) is provided with a wire mesh (5) for first contact with the material to resist impact. The two sides of the outer frame (2) are provided with mounting grooves (6). The two sides of the wire mesh (5) are fixedly installed with support plates for limiting support, and the support plates are slidably connected inside the mounting grooves (6). The upper and lower sides of the mounting grooves (6) are provided with buffer components for elastic support of the support plates. The front side of the outer frame (2) is provided with a blocking member (7) for blocking.

2. The wear-resistant polyurethane screen according to claim 1, characterized in that: The support plate is a T-shaped plate (8). Slides (9) are provided in the middle of the upper and lower sides of the T-shaped plate (8). Several slots (10) are provided at equal intervals on the upper and lower sides of the T-shaped plate (8) and in the slides (9). The slots (10) are provided in relation to the buffer components.

3. The wear-resistant polyurethane screen according to claim 2, characterized in that: The buffer assembly includes a slider (11) that is slidably connected to the inside of the upper and lower sides of the mounting groove (6), and a buffer spring (12) is fixedly installed between the slider (11) and the inner walls of the upper and lower sides of the mounting groove (6).

4. The wear-resistant polyurethane screen according to claim 3, characterized in that: On the opposite side of the upper and lower sliders (11), there are balls (13) embedded. The balls (13) roll along the track of the slide (9) and are correspondingly stuck in the slots (10).

5. The wear-resistant polyurethane screen according to claim 3, characterized in that: A guide rod (14) is fixedly installed in the middle of the slider (11), and a guide hole (15) is opened in the inner part of the outer frame (2) corresponding to the guide rod (14) to pass into the mounting groove (6). The guide rod (14) is slidably inserted into the inside of the guide hole (15).

6. The wear-resistant polyurethane screen according to claim 1, characterized in that: The blocking member (7) includes a card plate (16) sleeved on one side of the front of the outer frame (2), and a baffle (17) is fixedly installed between the two card plates (16).

7. The wear-resistant polyurethane screen according to claim 6, characterized in that: The inner wall of the card plate (16) is glued with an elastic rubber pad, and the rubber pad is tightly pressed against the outer side of the outer frame (2).

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