Vibrating screen with adjustable screening precision

Abstract

The utility model relates to the technical field of vibrating screens, in particular to a vibrating screen with adjustable screening precision, which comprises a bottom plate and a screen box, a vibrating motor is mounted on the lower end face of the screen box, a plurality of screen plates are arranged in the screen box, a feed port is arranged on the upper end face of the bottom plate, and one ends of the screen plates close to the screen box are distributed in a stepped manner. A feeding mechanism is arranged on the upper end face of the bottom plate and comprises two supports fixedly connected to the upper end face of the bottom plate, sliding blocks are slidably connected to the upper end faces of the two supports, a hopper is fixedly connected between the two sliding blocks, and a lead screw is rotationally connected between the inner walls of one support. Through cooperation of the support, the servo motor, the lead screw, the limiting rod and the sliding block, the hopper can be driven to move left and right, a discharging opening of the hopper is located above different screen plates, the ends, close to the feeding opening, of the multiple screen plates are distributed in a stepped mode, materials can conveniently fall on the different screen plates, and the effect that the screening precision is adjustable is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and specifically discloses a vibrating screen with adjustable screening accuracy. Background Technology

[0002] A vibrating screen is a commonly used device for screening, grading, and filtering solid and liquid materials. It utilizes vibration to separate materials into different particle sizes or grades. A vibrating screen typically consists of a vibrator, screen surface, screen mesh, and vibrating screen frame. Vibration causes the material to move rapidly across the screen mesh, thus achieving the screening effect. This equipment is widely used in mining, building materials, chemical, and food processing industries.

[0003] Chinese patent CN222035747U discloses a vibrating screen with adjustable screening accuracy, comprising a support frame, a screening box mounted on top of the support frame, a fixed screen plate installed inside the screening box, a movable screen plate at the bottom of the fixed screen plate, and the movable screen plate fitting snugly against the fixed screen plate. An adjustment mechanism is provided on the lower side of the movable screen plate, enabling it to move along its width. Two connecting frames are mounted on the outer surface of the screening box, and a hopper is located between the ends of the two connecting frames. A feeding mechanism is provided inside the hopper to ensure even material distribution. By adjusting the movable screen plate laterally, the screening accuracy can be adjusted. Furthermore, by moving the movable screen plate and expanding the overlapping area, the screen holes can be quickly cleaned. The feeding mechanism ensures that the material inside the hopper is evenly distributed onto the fixed screen plate for screening, preventing localized material accumulation that could affect the screening effect.

[0004] The vibrating screen with adjustable screening accuracy disclosed in the above document has a problem during use: the fixed screen plate and the movable screen plate are prone to not fitting tightly together during vibration, which affects the screening effect. In addition, the material tends to accumulate in the screen holes of the upper fixed screen plate, resulting in poor performance. Therefore, a vibrating screen with adjustable screening accuracy is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a vibrating screen with adjustable screening accuracy. The material is fed into different screen plates through the feeding mechanism to achieve the effect of adjustable screening accuracy. Furthermore, the material can be evenly fed by rotating the distribution plate, resulting in good performance.

[0006] This utility model is implemented as follows: a vibrating screen with adjustable screening accuracy includes a base plate and a screen box. A vibrating motor is installed on the lower end face of the screen box. Multiple screen plates are arranged inside the screen box. A feed inlet is provided on the upper end face of the base plate. The multiple screen plates are arranged in a stepped manner near the feed inlet. A feeding mechanism is provided on the upper end face of the base plate.

[0007] The feeding mechanism includes two brackets fixedly connected to the upper surface of the base plate. Sliders are slidably connected to the upper surface of both brackets. A hopper is fixedly connected between the two sliders. A lead screw is rotatably connected between the inner walls of one of the brackets. A servo motor with its output end fixedly connected to the lead screw is provided on the outer wall of the bracket. One of the sliders is threadedly connected to the lead screw.

[0008] As a preferred embodiment of the present invention, a vibrating screen with adjustable screening accuracy is provided, wherein a drive motor is installed on the outer wall of the hopper, the output end of the drive motor extends into the interior of the hopper and is fixedly connected to a rotating shaft, and a plurality of circumferentially distributed material distribution plates are fixedly connected to the outer wall of the rotating shaft.

[0009] As a preferred embodiment of the vibrating screen with adjustable screening accuracy according to this utility model, four support legs are fixedly connected to the upper end face of the base plate, and elastic elements are provided between the four support legs and the screen box.

[0010] As a preferred embodiment of the present invention, the vibrating screen with adjustable screening accuracy has a plurality of partitions fixedly connected to the inner wall of the screen box, which respectively abut against a plurality of screen plates.

[0011] As a preferred embodiment of the vibrating screen with adjustable screening accuracy according to this utility model, a limiting rod is fixedly connected to the inner wall of another of the supports, and the other slider is slidably connected to the limiting rod.

[0012] In a preferred embodiment of this utility model of a vibrating screen with adjustable screening precision, all of the screen plates are fixedly connected to the screen box by bolts.

[0013] As a preferred embodiment of the present invention, a vibrating screen with adjustable screening accuracy is provided on the outer wall of one of the supports, and the vibrating motor, servo motor and drive motor are all electrically connected to the controller.

[0014] The beneficial effects of this utility model are:

[0015] 1. Through the cooperation of bracket, servo motor, lead screw, limit rod and slider, the hopper can be driven to move left and right, so that the discharge port of the hopper is located above different screen plates. By distributing multiple screen plates in a stepped manner near the end of the feed port, it is easy for the material to fall onto different screen plates, so as to achieve the effect of adjustable screening accuracy.

[0016] 2. The drive motor drives the rotating shaft and multiple material distribution plates to rotate at a uniform speed, so that the material is fed evenly, which facilitates subsequent screening and improves screening efficiency. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is an overall structural diagram of a vibrating screen with adjustable screening accuracy according to this utility model;

[0019] Figure 2 This is a front sectional view of a vibrating screen with adjustable screening accuracy according to this utility model.

[0020] Figure 3 This is a structural diagram of the hopper of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0022] The markings in the diagram are: 1. Base plate; 2. Screen box; 3. Screen plate; 4. Vibration motor; 5. Support leg; 6. Elastic element; 7. Partition plate; 8. Support; 9. Lead screw; 10. Servo motor; 11. Limiting rod; 12. Hopper; 13. Slider; 14. Drive motor; 15. Rotating shaft; 16. Material distribution plate; 17. Controller. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] Please see Figure 1-4 A vibrating screen with adjustable screening accuracy includes a base plate 1 and a screen box 2. A vibrating motor 4 is installed on the lower end face of the screen box 2. Multiple screen plates 3 are arranged inside the screen box 2. A feed inlet is provided on the upper end face of the base plate 1. The multiple screen plates 3 are arranged in a stepped manner near the feed inlet. A feeding mechanism is provided on the upper end face of the base plate 1.

[0025] The feeding mechanism includes two brackets 8 fixedly connected to the upper surface of the base plate 1. Slider 13 is slidably connected to the upper surface of both brackets 8. A hopper 12 is fixedly connected between the two sliders 13. A lead screw 9 is rotatably connected between the inner walls of one of the brackets 8. A servo motor 10 with its output end fixedly connected to the lead screw 9 is provided on the outer wall of the bracket 8. One of the sliders 13 is threadedly connected to the lead screw 9.

[0026] In this embodiment: the diameter of the screen holes of the multiple screen plates 3 decreases from top to bottom. The vibration motor 4 is started, and the vibration motor 4 drives the screen box 2 to vibrate, thereby driving the multiple screen plates 3 to vibrate and screen the material. By distributing the multiple screen plates 3 in a stepped manner near one end of the screen box 2, it is easy for the material to fall onto different screen plates 3. The servo motor 10 is started, and the servo motor 10 drives the lead screw 9 to rotate, which in turn drives the hopper 12 to move left and right between the two supports 8 through the slider 13, so that the discharge port of the hopper 12 is located above different screen plates 3, thereby making it easier for the material to fall onto different screen plates 3, and achieving the effect of adjustable screening accuracy.

[0027] As a technical optimization of this utility model, a drive motor 14 is installed on the outer wall of the hopper 12. The output end of the drive motor 14 extends into the interior of the hopper 12 and is fixedly connected to a rotating shaft 15. Multiple circumferentially distributed material distribution plates 16 are fixedly connected to the outer wall of the rotating shaft 15.

[0028] In this embodiment: the drive motor 14 is started, and the drive motor 14 drives the rotating shaft 15 to rotate, thereby driving multiple material distribution plates 16 to rotate at a uniform speed, so that the material is fed evenly, which facilitates subsequent screening and improves screening efficiency.

[0029] As a technical optimization of this utility model, four support legs 5 are fixedly connected to the upper end face of the base plate 1, and elastic elements 6 are provided between the four support legs 5 and the screen box 2.

[0030] In this embodiment, an elastic element 6 is provided between the support leg 5 and the screen box 2, which facilitates the vibration motor 4 to drive the screen box 2 to vibrate.

[0031] As a technical optimization of this utility model, the inner wall of the sieve box 2 is fixedly connected with a plurality of partitions 7 that abut against a plurality of sieve plates 3 respectively.

[0032] In this embodiment, the partition 7 facilitates the separation of different screen plates 3, preventing materials from entering other screen plates 3.

[0033] As a technical optimization of this utility model, a limiting rod 11 is fixedly connected to the inner wall of another bracket 8, and another slider 13 is slidably connected to the limiting rod 11.

[0034] In this embodiment: the limiting rod 11 facilitates the limiting of the hopper 12, so that the hopper 12 moves stably from left to right.

[0035] As a technical optimization of this utility model, multiple sieve plates 3 are fixedly connected to the sieve box 2 by bolts.

[0036] In this embodiment, the sieve plate 3 is fixedly connected to the sieve box 2 by bolts, which facilitates the installation or disassembly of the sieve plate 3.

[0037] As a technical optimization of this utility model, a controller 17 is provided on the outer wall of one of the brackets 8, and the vibration motor 4, servo motor 10 and drive motor 14 are all electrically connected to the controller 17.

[0038] In this embodiment, the controller 17 facilitates the normal operation of the vibration motor 4, servo motor 10, and drive motor 14.

[0039] The working principle and usage process of this utility model are as follows: First, the servo motor 10 is started, which drives the lead screw 9 to rotate. This, in turn, drives the hopper 12 to move left and right between the two supports 8 via the slider 13, positioning the outlet of the hopper 12 above different screen plates 3. This facilitates material falling onto different screen plates 3, achieving adjustable screening accuracy. After adjusting the hopper 12 to a suitable position, the material to be screened is poured into the hopper 12, and the drive motor 14 and vibration motor 4 are started. The drive motor 14 drives the rotating shaft 15 to rotate, thereby driving multiple distribution plates 16 to rotate at a uniform speed, ensuring even material feeding for subsequent screening and improving screening efficiency. The vibration motor 4 drives the screen box 2 to vibrate, thereby causing multiple screen plates 3 to vibrate and screen the material. By distributing the multiple screen plates 3 in a stepped manner near the feed inlet, it is easy for material to fall onto different screen plates 3, achieving adjustable screening accuracy.

[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A vibrating screen with adjustable screening precision, comprising a base plate (1) and a screen box (2), wherein a vibrating motor (4) is installed on the lower end face of the screen box (2), characterized in that: The screen box (2) is provided with multiple screen plates (3) inside, and the upper end of the bottom plate (1) is provided with a feed inlet. The multiple screen plates (3) are arranged in a stepped manner near the feed inlet. The upper end of the bottom plate (1) is provided with a feeding mechanism. The feeding mechanism includes two brackets (8) fixedly connected to the upper surface of the base plate (1). The upper surfaces of the two brackets (8) are slidably connected to sliders (13). A hopper (12) is fixedly connected between the two sliders (13). A lead screw (9) is rotatably connected between the inner walls of one of the brackets (8). A servo motor (10) with its output end fixedly connected to the lead screw (9) is provided on the outer wall of the bracket (8). One of the sliders (13) is threadedly connected to the lead screw (9).

2. The vibrating screen with adjustable screening accuracy according to claim 1, characterized in that: A drive motor (14) is installed on the outer wall of the hopper (12). The output end of the drive motor (14) extends into the interior of the hopper (12) and is fixedly connected to a rotating shaft (15). Multiple circumferentially distributed material distribution plates (16) are fixedly connected to the outer wall of the rotating shaft (15).

3. The vibrating screen with adjustable screening accuracy according to claim 1, characterized in that: Four support legs (5) are fixedly connected to the upper end of the base plate (1), and elastic elements (6) are provided between the four support legs (5) and the sieve box (2).

4. The vibrating screen with adjustable screening accuracy according to claim 1, characterized in that: The inner wall of the sieve box (2) is fixedly connected with a plurality of partitions (7) that abut against a plurality of sieve plates (3).

5. A vibrating screen with adjustable screening accuracy according to claim 1, characterized in that: Another bracket (8) has a limit rod (11) fixedly connected to its inner wall, and another slider (13) is slidably connected to the limit rod (11).

6. The vibrating screen with adjustable screening accuracy according to claim 1, characterized in that: All of the sieve plates (3) are fixedly connected to the sieve box (2) by bolts.

7. A vibrating screen with adjustable screening accuracy according to claim 2, characterized in that: One of the brackets (8) has a controller (17) on its outer wall, and the vibration motor (4), servo motor (10) and drive motor (14) are all electrically connected to the controller (17).

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