Vibrating screen with adjustable inclination angle

Abstract

The utility model provides a vibrating screen with an adjustable inclination angle, which relates to the technical field of screening devices and comprises a screen body, a discharge port arranged on one side of the screen body, a screening part horizontally and fixedly paved on the middle layer of the screen body, a vibrating source fixedly arranged at the top of the screen body, and elastic pieces fixedly connected at four corners of the bottom of the screen body respectively. The bottoms of the two elastic pieces close to one side of the discharging port are coaxially and rotationally arranged, a driving source is fixedly arranged on one side, away from the discharging port, of the screen body, and the output end of the driving source is connected with the bottoms of the two elastic pieces away from the discharging port and used for driving the screen body to rotate. The vibration buffering characteristic of the elastic piece is reserved, stepless adjustment of the pitching angle of the screen body is achieved, the vibrating screen can be flexibly adjusted in a multi-angle mode according to production requirements, the screening efficiency and applicability are remarkably improved, meanwhile, the discharging difficulty can be lowered, and the situation that screen holes are blocked is reduced.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to a vibrating screen with adjustable tilt angle. Background Technology

[0002] Vibrating screens are key equipment used in industrial fields for material grading and screening. They separate particles of different sizes through the vibration of the screen body and are widely used in mining, metallurgy, building materials, chemical and other industries. Traditional vibrating screens are usually composed of screen frame, screen mesh, vibrating motor and support device. The excitation force generated by the vibrating motor drives the screen body to move periodically, so that the material jumps forward on the screen surface to achieve efficient screening. Its advantages are large processing capacity, high screening efficiency and simple structure, and it is suitable for continuous operation scenarios.

[0003] Currently, most vibrating screens use a fixed tilt angle design, which cannot be adjusted after installation. While this structure simplifies the equipment assembly process, in practical applications, when material characteristics (such as moisture, viscosity, and particle composition) change, the fixed tilt angle can cause fluctuations in screening efficiency. For example, when the material has poor flowability, a fixed tilt angle may cause accumulation on the screen surface or reduce screening efficiency. For lightweight or fragile materials, an excessively large tilt angle may increase the risk of material breakage. Loose materials may be discharged before being fully screened due to excessively fast downward sliding speed. In addition, a fixed tilt angle makes it difficult to flexibly optimize screening parameters for different process requirements, limiting the equipment's adaptability to different production needs. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a vibrating screen with adjustable tilt angle, which solves the problems of the non-adjustable tilt angle and poor applicability of the existing screen.

[0005] According to an embodiment of the present invention, a vibrating screen with adjustable tilt angle includes:

[0006] The screen body has a discharge port on one side, a screening part is horizontally and fixedly installed in the middle layer of the screen body, a vibration source is fixedly installed on the top of the screen body, and elastic elements are fixedly connected to the four corners of the bottom of the screen body. The bottom of the two elastic elements near the discharge port is coaxially rotatable.

[0007] A drive source is fixedly disposed on the side of the screen body away from the discharge port. The output end of the drive source is connected to the bottom of the two elastic elements away from the discharge port, and is used to drive the screen body to rotate.

[0008] The technical principle of this utility model is as follows: When in use, according to the characteristics of the material to be screened, the screen body is driven to rotate to a suitable angle by the drive source, and then the vibration source is started to drive the screen body to vibrate. The material to be screened is poured into the screen section from the side away from the discharge port. The excitation force generated by the vibration source drives the screen body to vibrate regularly, so that the material jumps and moves on the screen surface, thereby completing the screening between materials of different diameters, and finally discharging from the discharge port.

[0009] Furthermore, the vibrating screen also includes a base, which is fixedly disposed below the screen body. A pair of hinge seats are fixedly disposed on the base, and a connecting plate is hinged to the top of the hinge seats. The bottom of two elastic elements near the discharge port is fixedly connected to the top of the connecting plate.

[0010] Furthermore, the elastic element includes a spring, and mounting ears are fixedly connected to the four corners of the bottom of the screen body, with the upper and lower ends of the spring fixedly connected to the mounting ears and the connecting plate, respectively.

[0011] Furthermore, the bottom of the two springs away from the discharge port is fixedly connected to a support plate. The bottom of the support plate is rotatably provided with a rotating shaft along its long end. A sliding seat is slidably provided on the base. A pair of rockers are symmetrically rotatably provided on both sides of the sliding seat. The two rockers are rotatably connected to the rotating shaft. The drive source drives the sliding seat to slide.

[0012] Furthermore, a sliding groove is fixedly provided on the base perpendicular to the axis of the two hinge seats, the sliding seat is slidably disposed in the sliding groove, a first mounting seat is fixedly provided at one end of the sliding groove, and the drive source is fixedly disposed on the first mounting seat.

[0013] Furthermore, the drive source includes a servo motor, the output end of which is fixedly connected to a lead screw, and the other end of the sliding groove is fixedly provided with a second mounting base. The lead screw is rotatably disposed between the first mounting base and the second mounting base parallel to the sliding groove. A threaded hole is provided in the sliding groove, and the threaded hole meshes with the lead screw.

[0014] Furthermore, a number of support springs are fixedly installed on the support plate, and the upper and lower ends of the support springs are fixedly connected to the screen body and the support plate, respectively.

[0015] Furthermore, the screening section includes several screen frames, in which screen meshes are uniformly fixed, and multiple screen frames are detachably arranged side by side in the middle layer of the screen body.

[0016] Furthermore, the bottom of the screen body is provided with a discharge bottom plate, and the discharge port is provided with an inclined back-cut surface extending to the discharge bottom plate at the bottom of the screen section, so that the length of the discharge bottom plate is shorter than the length of the screen section.

[0017] Furthermore, the vibration source includes a vibration motor, which is fixedly connected to the top of the screen body via a mounting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By combining a rotatable elastic support structure with the tilt adjustment setting of the drive source, the vibration buffering characteristics of the elastic element are retained, and the pitch angle of the screen body is infinitely adjustable. This allows the vibrating screen to be flexibly adjusted at multiple angles according to production needs, significantly improving screening efficiency and applicability. At the same time, it can also reduce the difficulty of feeding and reduce the occurrence of screen hole blockage. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0021] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point B.

[0023] Figure 4 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model.

[0024] In the above attached figures: 1. Screen body; 11. Discharge port; 12. Discharge bottom plate; 121. Back cutting surface; 13. Mounting plate; 14. Mounting ear; 141. First limiting post; 15. Spring; 16. Connecting plate; 17. Support spring; 171. Second limiting post; 2. Base; 21. Hinge seat; 22. First mounting seat; 23. Second mounting seat; 24. Sliding groove; 3. Screen frame; 31. Screen mesh; 4. Vibration motor; 5. Sliding seat; 51. Rocker arm; 52. Rotating shaft; 53. Support plate; 6. Servo motor; 61. Lead screw. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1-4As shown in the figure, this utility model embodiment proposes a vibrating screen with adjustable tilt angle, including a screen body 1. The screen body 1 has a discharge port 11 on one side, making the screen body 1 a box-shaped structure with one side open. The middle layer of the screen body 1 is horizontally and fully laid with a screening part for screening and separating materials. The top of the screen body 1 is fixedly installed with a vibration source for driving the screen body 1 to vibrate. The four corners of the bottom of the screen body 1 are respectively fixedly connected with elastic elements to provide buffer for the vibration of the screen body 1 and to make the screen body 1 vibrate regularly so as to drive the material to jump and move towards the discharge port 11. The bottom of the two elastic elements near the discharge port 11 is coaxially rotatably arranged. The drive source is fixedly installed on the side of the screen body 1 away from the discharge port 11. The output end of the drive source is connected to the bottom of the two elastic elements away from the discharge port 11 for driving the screen body 1 to rotate.

[0027] The technical principle of this utility model is as follows: When in use, according to the characteristics of the material to be screened, the screen body 1 is driven to rotate to a suitable angle by the drive source, and then the vibration source is started to drive the screen body 1 to vibrate. The material to be screened is poured into the screening section from the side away from the discharge port 11. The excitation force generated by the vibration source drives the screen body 1 to vibrate regularly, so that the material jumps and moves on the screen surface, thereby completing the screening between materials with different diameters, and finally discharging from the discharge port 11.

[0028] This invention utilizes two elastic elements on the side near the discharge port 11, which are coaxially rotated at their bottoms. A drive source is then connected to the bottom of the elastic element away from the discharge port 11 to drive the screen body 1 to rotate. This achieves a rotatable elastic support structure with adjustable tilt angles for the drive source. It retains the vibration buffering characteristics of the elastic elements while enabling stepless adjustment of the screen body 1's pitch angle. This allows the vibrating screen to be flexibly adjusted at multiple angles according to production needs, significantly improving screening efficiency and applicability. At the same time, it also reduces the difficulty of material feeding and minimizes screen hole clogging.

[0029] like Figure 1-3 As shown, according to another embodiment of the present invention, the vibrating screen further includes a base 2, which is horizontally fixedly disposed below the screen body 1. A pair of hinge seats 21 are fixedly disposed on the base 2, and the hinge seats 21 are fixedly connected to the base 2 by bolts. The hinge holes of the two hinge seats 21 are coaxial. A connecting plate 16 is hingedly disposed on the top of the hinge seat 21. The bottom of two elastic members near the discharge port 11 is fixedly connected to the top of the connecting plate 16. The screen body 1 can rotate along the hinge axis.

[0030] like Figure 1-4As shown, according to another embodiment of the present invention, the elastic element further includes an elastic material that combines elasticity and damping, such as a spring, rubber, or polyurethane. In this embodiment, the elastic element is set as a spring 15. The four corners of the bottom of the screen body 1 are respectively fixedly connected to mounting ears 14 by bolts. The upper and lower ends of the spring 15 are respectively fixedly connected to the mounting ears 14 and the connecting plate 16. A first limiting post 141 is also fixedly provided at the bottom of the mounting ears 14. The first limiting post 141 is surrounded by the spring 15 to maintain the extension and retraction direction of the spring 15 and prevent deviation.

[0031] like Figure 1-4 As shown, according to another embodiment of the present invention, further, a support plate 53 is fixedly connected to the bottom of the two springs 15 away from the discharge port 11. The length of the support plate 53 exceeds the width of the screen body 1. A rotating shaft 52 is rotatably provided at the bottom of the support plate 53 along its long end. At the same time, a sliding groove 24 is fixedly provided on the base 2 perpendicular to the axis of the two hinge seats 21. A sliding seat 5 is slidably disposed in the sliding groove 24. Limiting strips are provided on both sides of the sliding groove 24. The sliding seat 5 has grooves of the same shape on both sides. The limiting blocks can be embedded in the grooves and slide against each other to prevent the sliding seat 5 from falling out of the sliding groove 24 during sliding. A pair of rocker arms 51 are symmetrically arranged on both sides of the sliding seat 5, parallel to the sliding groove 24. The other ends of the two rocker arms 51 are rotatably connected to the rotating shaft 52. A first mounting seat 22 is fixedly provided at one end of the sliding groove 24. The drive source is fixedly mounted on the first mounting seat 22 by bolts. The drive source can drive the sliding seat 5 to slide. When the slider slides, it can provide support force to the screen body 1 through the rocker arms 51, thereby driving the screen body 1 to rotate. The screen body 1 can adjust the rotation angle according to the material characteristics. When the screen 31 is blocked, the screen body 1 can be driven to rotate to a larger angle to reduce the support of the screen 31 to the blockage source, making it easier to clean the screen 31.

[0032] like Figure 1-4As shown, according to another embodiment of the present invention, the driving source further includes a linear motor, a pneumatic cylinder, a hydraulic cylinder, or other mechanisms capable of driving the sliding seat 5 to perform linear motion. In this embodiment, the driving source is set as a servo motor 6, and the output end of the servo motor 6 is fixedly connected to a lead screw 61. The other end of the sliding groove 24 is fixedly provided with a second mounting seat 23. The lead screw 61 is parallel to the sliding groove 24 and rotatably disposed between the first mounting seat 22 and the second mounting seat 23. A threaded hole is provided through the sliding groove 24, and the threaded hole can mesh with the lead screw 61. The servo motor 6, in conjunction with the lead screw 61, drives the sliding seat 5 to provide more precise control and lower production costs. The meshing structure between the lead screw 61 and the threaded hole can also effectively prevent the angle of the screen body 1 from shifting during the vibration of the vibrating screen, and can also avoid the direct impact of the output shaft of the servo motor 6 on the vibration, thus maintaining the stability of the tilt angle during vibration.

[0033] like Figure 1-4 As shown, according to another embodiment of the present invention, a plurality of support springs 17 are further fixedly provided on the support plate 53. The upper and lower ends of the support springs 17 are fixedly connected to the screen body 1 and the support plate 53, respectively. A second limiting post 171 is fixedly provided on the support plate 53 to prevent the support springs from deviating. The support springs 17 can provide more stable buffering while further distributing the torque generated by vibration evenly to the support plate 53, thereby reducing the unbalanced vibration impact at both ends of the support plate 53 and improving the stability of the overall structure.

[0034] like Figure 1-2 As shown, according to another embodiment of the present invention, the screening section further includes a plurality of screen frames 3, and screen mesh 31 is uniformly fixedly arranged in the screen frames 3. The aperture of the screen mesh 31 can be selected according to production needs. The plurality of screen frames 3 are detachably arranged in parallel in the middle layer of the screen body 1. Specifically, the screen frames 3 are fixedly connected to the inner wall of the screen body 1 by bolts. In order to achieve the purpose of multi-stage screening, multiple screening sections can also be arranged vertically. The aperture of the screen mesh 31 in the multiple screening sections decreases from top to bottom, so as to screen the material more finely and increase the applicability of the device.

[0035] like Figure 1 and Figure 4 As shown, according to another embodiment of the present invention, the bottom of the screen body 1 is provided with a discharge bottom plate 12, and the discharge port 11 is provided with an inclined back-cutting surface 121 extending to the discharge bottom plate 12 at the bottom of the screen part, so that the length of the discharge bottom plate 12 is shorter than the length of the screen part, and the small-diameter material on the discharge bottom plate 12 will fall out of the screen part earlier than the large-diameter material on the screen part, which facilitates the separation and collection of the two.

[0036] like Figure 1 and Figure 4 As shown, according to another embodiment of the present invention, the vibration source further includes a pneumatic vibrator, an electromagnetic vibrator, or an eccentric block exciter, or other mechanisms capable of generating vibration. In this embodiment, the vibration source is set as a vibration motor 4, which is fixedly connected to the top of the screen body 1 via a mounting plate 13.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vibrating screen with adjustable tilt angle, characterized in that, include: The screen body (1) has a discharge port (11) on one side. The screen body (1) has a screen section that is horizontally and fixedly laid in the middle layer. The screen body (1) has a vibration source fixedly installed on the top. The four corners of the bottom of the screen body (1) are respectively fixedly connected with elastic elements. The bottom of the two elastic elements near the discharge port (11) is coaxially rotated. The drive source is fixedly disposed on the side of the screen body (1) away from the discharge port (11). The output end of the drive source is connected to the bottom of the two elastic elements away from the discharge port (11) and is used to drive the screen body (1) to rotate.

2. The adjustable-angle vibrating screen as described in claim 1, characterized in that: The vibrating screen also includes a base (2), which is fixedly disposed below the screen body (1). A pair of hinge seats (21) are fixedly disposed on the base (2). A connecting plate (16) is hinged to the top of the hinge seat (21). The bottom of two elastic members near the discharge port (11) is fixedly connected to the top of the connecting plate (16).

3. The adjustable-angle vibrating screen as described in claim 2, characterized in that: The elastic element includes a spring (15), and mounting ears (14) are fixedly connected to the four corners of the bottom of the screen body (1). The upper and lower ends of the spring (15) are fixedly connected to the mounting ears (14) and the connecting plate (16) respectively.

4. The adjustable-angle vibrating screen as described in claim 3, characterized in that: Two springs (15) located away from the discharge port (11) are fixedly connected to a support plate (53) at their bottom. The support plate (53) is rotatably provided with a rotating shaft (52) at its bottom along its long end. A sliding seat (5) is slidably provided on the base (2). A pair of rockers (51) are symmetrically rotatably provided on both sides of the sliding seat (5). The two rockers (51) are rotatably connected to the rotating shaft (52). The drive source drives the sliding seat (5) to slide.

5. The adjustable-angle vibrating screen as described in claim 4, characterized in that: A sliding groove (24) is fixedly provided on the base (2) perpendicular to the axis of the two hinge seats (21). The sliding seat (5) is slidably disposed in the sliding groove (24). A first mounting seat (22) is fixedly provided at one end of the sliding groove (24). The driving source is fixedly disposed on the first mounting seat (22).

6. The adjustable-angle vibrating screen as described in claim 5, characterized in that: The drive source includes a servo motor (6), the output end of which is fixedly connected to a lead screw (61), and the other end of the sliding groove (24) is fixedly provided with a second mounting seat (23). The lead screw (61) is rotatably disposed between the first mounting seat (22) and the second mounting seat (23) parallel to the sliding groove (24). A threaded hole is provided in the sliding groove (24), and the threaded hole meshes with the lead screw (61).

7. The adjustable-angle vibrating screen as described in claim 4, characterized in that: Several support springs (17) are also fixedly installed on the support plate (53), and the upper and lower ends of the support springs (17) are fixedly connected to the screen body (1) and the support plate (53) respectively.

8. The adjustable-angle vibrating screen as described in claim 1, characterized in that: The screening section includes several screen frames (3), and screen mesh (31) is uniformly fixed inside the screen frames (3). The multiple screen frames (3) are detachably arranged side by side in the middle layer of the screen body (1).

9. The adjustable-angle vibrating screen as described in claim 8, characterized in that: The bottom of the screen body (1) is provided with a discharge bottom plate (12), and the discharge port (11) is provided with an inclined back-cutting surface (121) extending to the discharge bottom plate (12) at the bottom of the screen part, so that the length of the discharge bottom plate (12) is shorter than the length of the screen part.

10. The tilt-adjustable vibrating screen as described in claim 1, characterized in that: The vibration source includes a vibration motor (4), which is fixedly connected to the top of the screen body (1) via a mounting plate (13).

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