Vibrating screen

Abstract

A vibrating screen comprises a supporting frame and a screen box, the screen box is arranged on the supporting frame in a vibrating mode, the vibrating screen is characterized by further comprising one or more screening assemblies, the multiple screening assemblies are sequentially stacked from bottom to top, discharging chutes in one-to-one correspondence with the screening assemblies are arranged on the front side of the screen box, and each screening assembly comprises a supporting frame and a screen mesh. The screen is fixedly arranged on the top face of the supporting frame, the supporting frame of the screening assembly on the lowermost layer is supported on the inner bottom face of the screening box, the discharging end of the screening assembly is located above the inlet end of the corresponding discharging chute, and the supporting frames of the other screening assemblies are supported on the top faces of the screening assemblies below. And the front ends of the screening assemblies are located above the inlet ends of the corresponding discharging chutes, the materials screened out by the screening assemblies can be accurately output through the corresponding discharging chutes, and mixing of the materials with different particle sizes is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vibrating screen especially relates to a vibrating screen. BACKGROUND

[0002] The Chinese patent document with the publication number CN104511424A discloses a linear vibrating screen, which is characterized by comprising a screening device arranged obliquely, the screening device being connected to a support through an elastic mechanism, the screening device comprising a screen disc, the screen disc being connected with a vibrating motor, the screen disc being sequentially provided with a first screen mesh and a second screen mesh from bottom to top, the first screen mesh being smaller than the second screen mesh, the first screen mesh and the second screen mesh both being provided with a folded edge matched with the upper end of the side edge of the screen disc, the screen disc being provided with a hand buckle around the periphery, the hand buckle pressing the first screen mesh and the second screen mesh on the screen disc through a pressing rod.

[0003] The screen mesh in the above scheme is fixed on the screen disc through the folded edge matched with the upper end of the side edge, which may make the fixation of the screen disc unstable and result in the falling of the screen disc in the long-term vibrating use, and the folded edge and the screen disc may also make the screened material or dirt hide between them and affect the use of the screen mesh. SUMMARY

[0004] The utility model aims at providing a vibrating screen with long service life and convenience.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0006] A vibrating screen comprises a support frame and a screen box, the screen box being vibratably arranged on the support frame, characterized in that it further comprises one or more screening assemblies, the screening assemblies being stacked from bottom to top, the front side of the screen box being provided with a discharge chute corresponding to each screening assembly, the screening assembly comprising a support frame and a screen mesh, the screen mesh being fixedly arranged on the top surface of the support frame, the support frame of the lowermost screening assembly being supported on the inner bottom surface of the screen box and making the discharge end of the screening assembly located above the inlet end of the corresponding discharge chute, the support frame of the other screening assembly being supported on the top surface of the lower screening assembly and making the front end of the screening assembly located above the inlet end of the corresponding discharge chute.

[0007] Through the above technical scheme, the screen box is provided with a discharge chute corresponding to each screening assembly on the front side, the material screened by each screening assembly can be accurately output through the corresponding discharge chute, the mixing of materials with different particle sizes is avoided, and one or more screening assemblies can be directly placed in the screen box for use, the support frame can support the screen mesh away from the inner bottom surface of the screen box, and the use of the support frame can also increase the structural strength of the screening assembly to increase the service life thereof.

[0008] The support frame includes two long support beams and two short support beams. The two long support beams and the two short support beams are connected to each other to form a rectangular frame structure. The top surfaces of the long support beams and the short support beams are level. The height of the two long support beams is higher than the height of the short support beam at the front end of the support frame. The support frame is supported by the bottom of the two long support beams, so that the short support beam at the front end of the support frame is located above the inlet end of the corresponding discharge chute.

[0009] By adopting the above technical solution, the short support beam at the front end of the support frame is lower in height than the long support beam and is located above the inlet end of the discharging chute. This design enables the material to slide smoothly along the front end of the inclined support frame into the discharging chute under the action of gravity after screening, avoiding the accumulation of material at the front end of the screening component, ensuring the smoothness of material discharging, and thus maintaining a stable screening process. The rectangular frame structure composed of two long support beams and two short support beams connected to each other has good stability. The top surfaces of the long support beam and the short support beam are flat, which can provide a flat installation surface for the screen. The screen is fixed on such a flat top surface of the support frame, which can ensure that the screen is evenly stressed during the entire screening process, avoiding depressions or bulges due to local uneven stress, which is beneficial to improving the screening accuracy and the service life of the screen. The entire support frame is supported by the bottom of the two long support beams, which can keep the supported screen away from the bottom surface of the screen box or the next layer of screen, ensuring the normal passage of the screened material.

[0010] The height of the long support beam is 2-5 times the height of the short support beam at the front end of the support frame.

[0011] By adopting the above technical solution, the height difference range of 2-5 times provides a certain adaptability for material screening scenarios of different types and particle size ranges, enabling the vibrating screen to maintain good working condition under various working conditions.

[0012] The inner wall of the screen box is also provided with an extension section of the lower end of the short support beam located at the front end of the support frame.

[0013] By adopting the above technical solution, when the material slides from the front end of the screen to the discharge chute, the extended section can play a guiding role, which can make the material discharge trajectory more stable and smooth, and avoid scattering or jamming of the material during the discharge process due to the gap or irregular structure that may exist between the short support beam and the inner wall of the screen box, thereby ensuring that the material enters the discharge chute accurately.

[0014] The periphery of the screening assembly is adapted to the inner wall of the screen box.

[0015] By adopting the above technical solution, the adaptive design reduces the residual space of the material between the screening assembly and the inner wall of the screen box, avoiding the long-term accumulation of material in the gap, breeding bacteria or affecting the subsequent screening performance of the equipment.

[0016] It also includes a vibration motor, which is arranged on the screen box.

[0017] By adopting the above technical solution, under the action of the vibration motor, the material can be sufficiently disturbed in each area of ​​the screen, so as to achieve a relatively uniform distribution on the screen. This can prevent the material from excessively accumulating at a certain place on the screen, causing the screen in that area to be overstressed or the local screening effect to be poor, thereby ensuring that the entire screen can effectively participate in the screening work.

[0018] The support frame is made of wood or metal.

[0019] By adopting the above technical solutions, wood is usually cheaper than some metal materials. In some cost-sensitive application scenarios, the use of wooden support frames can reduce the overall manufacturing cost of the vibrating screen to a certain extent. Metal materials have high strength and hardness and can withstand greater pressure and weight. However, when processing large amounts of materials or materials with larger particle sizes, the metal support frame can better support the weight of the screen and materials, maintain structural stability during long-term vibration, and reduce the possibility of deformation or damage due to force.

[0020] An elastic member is further provided between the support frame and the bottom of the screen box.

[0021] By adopting the above technical solution, the elastic member provides a certain elastic support for the screen box, which helps to maintain the stability and regularity of the screen box vibration. Suitable elastic members can make the vibration of the screen box more in line with the screening requirements, ensuring that the material can be well layered, bounced and screened on the screen, thereby improving the screening efficiency and accuracy.

[0022] The discharge chute is arranged at the front side of the screen box at a certain angle, and different discharge chutes have different directions.

[0023] By adopting the above technical solution, the inclined discharging chute can make full use of the effect of gravity, so that the screened material can automatically slide out of the chute, ensuring the smoothness of the discharging process. Discharging chutes with different directions are conducive to directing materials of different particle size ranges to different collection areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the present utility model.

[0025] Figure 2 This is a three-dimensional diagram from another perspective of the present invention.

[0026] Figure 3 It is a rear view of the present invention.

[0027] Figure 4 for Figure 3 Cross-sectional view along the AA direction.

[0028] Figure 5 It is a right view of the utility model.

[0029] Figure 6 for Figure 5 Cross-sectional view along the BB direction.

[0030] Figure 7 It is a three-dimensional diagram of the screening assembly of the present invention.

[0031] Figure 8 This is a three-dimensional diagram of the screening assembly of the present invention from another perspective. DETAILED DESCRIPTION

[0032] Reference Figures 1 to 8 A vibrating screen is shown in FIG. 1 . The technical solution of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings of the specification:

[0033] A vibrating screen comprises a support frame 1, a screen box 2, a screening assembly 3 and a vibrating motor 4.

[0034] The screen box 2 can be vibrated and set on the support frame 1. The support frame 1 is made of high-strength metal material, which can increase its strength. A roller 11 is installed at the bottom of the support frame 1 to facilitate the movement of the vibrating screen, and an elastic member 12 is also provided between the support frame 1 and the outer bottom surface of the screen box 2. The elastic member 12 is a high-strength spring that can provide a certain elastic support for the screen box 2, which helps to maintain the stability and regularity of the vibration of the screen box 2. The screen box 2 includes a feed port 21 at the upper end of the screen box and a discharge port 22 at the front end of the screen box 2. The feed port 21 is surrounded by four side panels 211. The opening is upward and inclined from the inside to the outside, and a baffle 212 that can slide up and down is provided on the side panel 211 of the front side of the screen box 2 near the feed port 21. The efficiency of the screen material entering the screen box 2 can be adjusted by sliding the baffle 212 up and down. The discharge port 22 is provided with a discharge chute 221 corresponding to the screening component 3. The discharge chute 221 is also inclined at a certain angle on the discharge port 22 of the screen box 2, and different discharge chutes 221 have different directions, which is conducive to directing materials of different particle size ranges to different collection areas after screening.

[0035] The screening assembly 3 includes a support frame 31 and a screen 32. The screen 32 is fixed to the top surface of the support frame 31. The screening assembly 3 can be one or more. Screens 32 with different apertures can be selected according to the fineness of the screening material and multiple screening assemblies 3 can be set. The support frame 31 is made of wood or metal. A support frame 31 of a suitable material can be selected as needed. The support frame 31 includes two long support beams 311 and two short support beams 312. The two long support beams 311 and two short support beams 312 The two long support beams 311 and the short support beams 312 are connected to form a rectangular frame structure. The top surfaces of the long support beams 311 and the short support beams 312 are level. The height of the two long support beams 312 is higher than the height of the short support beam 312 (2) at the front end of the support frame 31. There are also multiple short support beams 312 (2) that are the same as the short support beam 312 (2) at the front end of the support frame 31 arranged in parallel between the two long support beams 312, which can play a supporting role and increase the strength of the screen 32. The support frame 31 is composed of two long support beams 312 and a support frame. The bottom support of the short support beam 312 (1) at the rear end of the support frame 31 makes the short support beam 312 (2) at the front end of the support frame 31 located above the inlet end of the corresponding discharge chute 221, and the height of the long support beam 311 is 2-5 times the height of the short support beam 312 (2) at the front end of the support frame 31. The inner wall of the screen box 2 is also provided with an extension section 24 at the lower end of the short support beam 312 (2) at the front end of the support frame 31. When the material slides from the front end of the screen 32 to the discharge chute 221, the extension section 24 can play a role. It plays a guiding role, which can make the material discharge trajectory more stable and smooth, avoid scattering or jamming of the material during the discharge process due to the gap or irregular structure that may exist between the short support beam 312 (2) and the inner wall of the screen box 2, and ensure that the material accurately enters the discharge chute 221. The periphery of the screening component 3 is adapted to the inner wall of the screen box 2, which can reduce the residual space of the material between the screening component 3 and the inner wall of the screen box 2, and avoid the material from accumulating in the gap for a long time, breeding bacteria or affecting the subsequent screening performance of the equipment.

[0036] The vibration motor 4 is fixed to the outer bottom surface of the screen box 2 through the mounting portion 23 on the outer bottom surface of the screen box 2. There can be one or more vibration motors 4. This embodiment takes two vibration motors 4 as an example, and the two vibration motors 4 are fixed to the outer bottom surface of the screen box 2 at the same horizontal plane.

[0037] When in use, you can choose a screen 32 with different mesh diameters according to different screening requirements, and then place the screening component 3 directly in the screen box 2. Then, put the screened material to be screened into the screen box 2 from the feed port 21 and, after screening by the screening component 3, slide from the different discharge chutes 221 of the discharge port 22 to the collection areas with different screen material diameters to complete the screening of the screened material.

[0038] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of implementation of the present invention. In other words, equivalent changes and modifications made according to the scope of the patent application and the contents of the specification of the present invention should still fall within the scope of the present patent.

Claims

1. A vibrating screen comprising a support frame and a screen box, wherein the screen box is vibratingly mounted on the support frame, and wherein: It also includes one or more screening assemblies, and multiple screening assemblies are stacked in sequence from bottom to top. The front side of the screen box is provided with a discharge chute corresponding to the screening assembly one by one. The screening assembly includes a support frame and a screen. The screen is fixedly arranged on the top surface of the support frame. The support frame of the lowest screening assembly is supported on the inner bottom surface of the screen box and the discharge end of the screening assembly is located above the inlet end of the corresponding discharge chute. The support frames of other screening assemblies are supported on the top surface of the lower screening assembly and the front end of the screening assembly is located above the inlet end of the corresponding discharge chute.

2. A vibrating screen according to claim 1, characterized in that: The support frame includes two long support beams and two short support beams. The two long support beams and the two short support beams are connected to each other to form a rectangular frame structure. The top surfaces of the long support beams and the short support beams are level. The height of the two long support beams is higher than the height of the short support beam at the front end of the support frame. The support frame is supported by the bottom of the two long support beams, so that the short support beam at the front end of the support frame is located above the inlet end of the corresponding discharge chute.

3. A vibrating screen according to claim 2, characterized in that: The height of the long support beam is 2-5 times the height of the short support beam at the front end of the support frame.

4. A vibrating screen according to claim 2, characterized in that: The inner wall of the screen box is also provided with an extension section of the lower end of the short support beam located at the front end of the support frame.

5. The vibrating screen according to claim 1, characterized in that: The periphery of the screening assembly is adapted to the inner wall of the screen box.

6. A vibrating screen according to any one of claims 1 to 5, characterized in that: It also includes a vibration motor, which is arranged on the screen box.

7. A vibrating screen according to any one of claims 1 to 5, characterized in that: The support frame is made of wood or metal.

8. A vibrating screen according to any one of claims 1 to 5, characterized in that: An elastic member is further provided between the support frame and the outer bottom of the screen box.

9. A vibrating screen according to any one of claims 1 to 5, characterized in that: The discharge chute is arranged at the front side of the screen box at a certain angle, and different discharge chutes have different directions.

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