Screening device

Abstract

The utility model discloses a screening device, which is used for screening materials and comprises a rack, the screening structure is movably installed on the machine frame and comprises a screening hopper and a plurality of layers of screening plates arranged in the screening hopper, the hole diameters of screening holes of the multiple layers of screening plates are sequentially reduced in the direction from the top to the bottom of the machine frame, and all the screening plates are obliquely and downwards arranged in the direction towards the bottom of the machine frame; the vibration motor is mounted on the screening hopper and used for driving the screening hopper and the multiple layers of screening plates to vibrate; the springs are arranged in a mutually separated mode and connected between the screening hopper and the machine frame. The screening device can screen accessories such as pins, pin pieces, square gaskets, nuts and screws, the screening efficiency is improved, and the risk that the hands of workers are scratched by sharp accessories is avoided.

Description

Technical Field

[0001] This utility model relates to the field of material screening technology, and in particular to a screening device. Background Technology

[0002] Mechanical parts, including pins, washers, square washers, nuts, and screws, are used in the installation of large equipment. After disassembly, these parts are collected in a box. However, for subsequent use, they need to be disassembled and sorted for storage. Current screening methods rely on manual sieving, picking out parts one by one, which is inefficient. Furthermore, the sharp structures of screws and other parts pose a risk of hand injuries to workers. Utility Model Content

[0003] To address at least one problem existing in the prior art, according to one aspect of the present invention, a screening device is provided for screening materials, comprising:

[0004] A frame; a screening structure, movably mounted on the frame, including a screening hopper and multiple screening plates disposed within the screening hopper, wherein the aperture of the screening holes in the multiple screening plates decreases sequentially from the top to the bottom of the frame, and each screening plate is inclined downwards towards the bottom of the frame; a vibration motor, mounted on the screening hopper, for driving the screening hopper and the multiple screening plates to vibrate; and multiple springs, spaced apart from each other and respectively connected between the screening hopper and the frame.

[0005] In some embodiments, each layer of the screening plate includes a screening section and a discharge section, the screening section being located inside the screening hopper and having the screen holes, the discharge section being located outside the screening hopper, and the multiple discharge sections having different orientations.

[0006] In some embodiments, the discharge section includes a bottom plate and two baffle plates, the two baffle plates being disposed on both sides of the bottom plate, defining a material discharge port between the two baffle plates, and each baffle plate being disposed perpendicular to the bottom plate.

[0007] In some embodiments, the width of the bottom plate gradually decreases in the direction away from the screening section along a direction perpendicular to the discharge direction of the material.

[0008] In some embodiments, the area of ​​the screening section with the screen holes is 1 / 2 to 2 / 3 of the area of ​​the screening section, and the area with the screen holes is located close to the feed position of the screening hopper.

[0009] In some embodiments, the screening device includes a plurality of baffles, each baffle being connected to the screening hopper and extending in a direction perpendicular to the discharge direction of the material, with a baffle provided above each discharge section connected to the screening section.

[0010] In some embodiments, the screening device further includes a feed hopper for conveying material to the uppermost screening plate, including a support plate and enclosure plates surrounding three adjacent sides of the support plate.

[0011] In some embodiments, the screening device further includes a mounting frame that spans over the top of the feed hopper in a direction perpendicular to the material discharge direction, for mounting the vibrating motor.

[0012] In some embodiments, the mounting bracket is positioned close to the feed hopper to define an inlet for the material between itself and the feed hopper.

[0013] In some embodiments, the screening device further includes multiple sets of guide structures, one set of which is fitted with a spring. Each guide structure includes two guide rods spaced apart from each other, one guide rod connecting to the screening hopper and the other guide rod connecting to the frame.

[0014] In summary, the screening device provided by this utility model has the following technical effects:

[0015] By setting multiple screening plates inside the screening hopper, the screen holes on the screening plates decrease in size from the top to the bottom of the frame. That is, the screen holes on the top screening plate have the largest diameter, and the screen holes on the bottom screening plate have the smallest diameter. As the vibrating motor gradually drives the screening hopper and screening plates to vibrate, the material is gradually screened by the multiple layers of screening plates. For example, when the material includes parts such as pins, pin plates, square washers, nuts, and screws, large-sized washers are intercepted and discharged by the top screening plate, medium-sized parts such as pins and bolts are intercepted and discharged by the screening plates in the middle area, and the smallest parts such as pin plates and nuts are intercepted and discharged by the screening plates in the lower area. In this way, the screening effect is achieved. Compared with the manual method of separating parts one by one, the screening efficiency is improved and the risk of sharp parts cutting the hands is avoided. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the screening device according to an embodiment of the present invention.

[0017] Attached image:

[0018] 100-Screening device, 10-Frame, 20-Screening structure, 21-Screening hopper, 22-Screening plate, 221-Screening section, 222-Discharge section, 2221-Bottom plate, 2222-Baffle plate, 223-Screen hole, 23-Inlet, 24-Discharge port, 30-Vibrating motor, 40-Spring, 50-Baffle plate, 60-Inlet hopper, 61-Support plate, 62-Enclosure plate, 70-Mounting frame. Detailed Implementation

[0019] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0020] Please see Figure 1 The screening device 100 provided in this embodiment of the utility model is used for screening materials, such as for screening accessories such as pins, pins, square washers, nuts, and screws. The screening device 100 includes a frame 10, a screening structure 20, a vibrating motor 30, and multiple springs 40.

[0021] The frame 10 serves as the mounting base for installation on a support surface, such as the ground. The screening structure 20 is movably mounted on the frame 10, for example, it can swing relative to the frame 10 to achieve the screening purpose. It includes a screening hopper 21 and multiple screening plates 22 disposed within the screening hopper 21. From the top to the bottom of the frame 10, the aperture of the screen holes 223 of the multiple screening plates 22 decreases sequentially, and each screening plate 22 is inclined downward towards the bottom of the frame 10. A vibration motor 30 is mounted on the screening hopper 21 to drive the screening hopper 21 and the multiple screening plates 22 to vibrate. Multiple springs 40 are arranged separately from each other and are respectively connected between the screening hopper 21 and the frame 10.

[0022] The aforementioned screening device 100, by arranging multiple screening plates 22 within the screening hopper 21, utilizes a multi-layered screening system. Since the screen holes 223 on the screening plates 22 decrease in size from the top to the bottom of the frame 10 (i.e., the uppermost screening plate 22 has the largest screen holes 223, and the lowermost screening plate 22 has the smallest), the material is gradually screened by the multiple layers of screening plates 22 as the vibrating motor 30 gradually drives the screening hopper 21 and the screening plates 22 to vibrate. For example, when the material includes… When sorting parts such as pins, pin plates, square washers, nuts, and screws, large-sized washers are intercepted and discharged by the uppermost screening plate 22, medium-sized parts such as pins and bolts are intercepted and discharged by the screening plate 22 in the middle area, and the smallest parts such as pin plates and nuts are intercepted and discharged by the screening plate 22 in the lower area. In this way, the screening effect is achieved. Compared with the manual method of separating them one by one by hand, the screening efficiency is improved and the risk of sharp parts cutting the hands is avoided.

[0023] In this embodiment, the screening device 100 is placed on the ground for use. From the top to the bottom of the frame 10 (i.e., from top to bottom), the screen holes 223 of the uppermost screening plate 22 are the largest, and the screen holes 223 of the lowermost screening plate 22 are the smallest. When the material is screened, it is received by the uppermost screening plate 22.

[0024] The sieve holes 223 on each sieve plate 22 can be set by creating regular or irregular through holes on the sieve plate 22, or by using multiple parallel and spaced sieve tubes, all of which can achieve the sieving effect.

[0025] In this embodiment, the screening structure 20 includes 3 screening plates 22. In other embodiments, other numbers of screening plates 22 may be provided, such as 2, 4 or 5 layers, etc., which are not limited here.

[0026] Please refer to Figure 1 To facilitate the collection of different materials after screening, each screening plate 22 includes a screening section 221 and a discharge section 222. The screening section 221 is located inside the screening hopper 21 and is provided with screen holes 223. The discharge section 222 is located outside the screening hopper 21, and the multiple discharge sections 222 have different orientations. In this way, the screening section 221 inside the screening hopper 21 screens the materials. The materials gradually move downwards by gravity and are discharged by the discharge section 222. Since the orientations of each discharge section 222 are different, containers can be used to collect the materials at the discharge port of each discharge section 222, which facilitates the collection of classified materials and improves screening efficiency.

[0027] Furthermore, to prevent material from falling out of the discharge section 222 when it is discharged, the discharge section 222 includes a base plate 2221 and two baffle plates 222. The two baffle plates 222 are located on both sides of the base plate 221, and the material discharge port 224 is defined between the two baffle plates 222. That is, the two baffle plates 222 are located on both sides of the baffle plate 2222 in a direction perpendicular to the material discharge direction. The baffle plates 2222 are set perpendicular to the base plate 2221, so that when the material moves out of the discharge section 222, it is blocked by the baffle plates 2222, thus preventing it from falling to the side.

[0028] Furthermore, in order to facilitate the collection of materials when they are discharged from the discharge section 222, the width of the bottom plate 2221 gradually decreases in the direction away from the screening section 221 along the direction perpendicular to the discharge direction of the materials. That is, the diameter of the discharge section 222 gradually decreases to achieve the effect of organizing the materials and making it easier for the container to receive them.

[0029] In order to ensure the structural strength of the screening plate 22, the area of ​​the screening section 221 with screen holes 223 is 1 / 2 to 2 / 3 of the area of ​​the screening section 221. The area with screen holes 223 is located close to the feed position of the screening hopper 21. That is, a part of the screening section 221 is provided with screen holes 223, and another part is not provided with screen holes 223. By not providing screen holes 223 on the remaining part of the screening section 221, the structural strength of the entire screening plate 22 is ensured.

[0030] Specifically, the area where the sieve holes 223 are set is located in the higher part of the screening section 221, that is, close to the feed inlet, so that the material can be screened immediately when poured onto the screening plate 22. The area of ​​the screening section 221 with sieve holes 223 can be set to 1 / 2, 3 / 5 or 2 / 3 of the area of ​​the screening section 221, etc., and is not limited here.

[0031] Please see Figure 1 Since the vibrating motor 30 drives the screening structure 20 to vibrate, to prevent material from vibrating and falling off the screening device 100 when it flows out, the screening device 100 includes multiple baffles 50. Each baffle 50 is connected to the screening hopper 21 and extends in a direction perpendicular to the material discharge direction. A baffle 50 is provided above each discharge section 222 connected to the screening section 221. Thus, by providing baffles 50 above the discharge section 222 connected to the screening section 221, when the vibrating motor 30 vibrates, the baffles 50 block the flowing material, preventing the material from shaking and falling off the screening plate 22. The extension length of the baffle 50 along the material flow direction can be less than the length of the bottom plate 2221, or it can be set to be equal to the length of the bottom plate 2221, which is not limited here.

[0032] Please see Figure 1 In one embodiment of this utility model, to facilitate feeding into the screening hopper 21, the screening device 100 further includes a feeding hopper 60. The feeding hopper 60 is used to convey material to the uppermost screening plate 22, and includes a support plate 61 and enclosing plates 62 surrounding the three adjacent sides of the support plate 61. Thus, by setting up the feeding hopper 60, it is convenient to concentrate the material feeding and avoid scattering during feeding. Further, the feeding hopper 60 is configured to include a support plate 61 and an enclosing plate 62. The support plate 61 is used to support the poured material, and the enclosing plate 62 blocks the material, and one side is provided with a notch for material to flow out, preventing the material from falling during feeding. In other embodiments, the feeding hopper 60 can be configured as a funnel shape, so that the material can fall quickly onto the screening plate 22 for screening by gravity.

[0033] The support plate 61 can be set parallel to the support surface, or it can be set in the same way as the screening plate 22, i.e., inclined downwards, to facilitate the automatic and rapid falling of materials. Specifically, in this embodiment, the support plate 61 is set parallel to the support surface, i.e., parallel to the horizontal plane. Since the materials in this embodiment are high-density metal parts such as nuts and screws, which have a large weight, the horizontally set support plate 61 allows the nuts, screws, and other parts to fall onto the screening plate 22 one by one under the vibration of the vibration motor 30. Compared with the inclined support plate 61, this reduces the collision noise between nuts and screws and avoids a large number of nuts and screws falling directly and quickly onto the screening plate 22 and accumulating. In addition, the horizontally set support plate 61 allows the parts to fall onto the screening plate 22 more slowly, so that the screening plate 22 can perform more accurate screening.

[0034] In one embodiment of this utility model, the vibrating motor 30 is installed on the top of the screening hopper 21, thereby facilitating the installation of the vibrating motor 30. Furthermore, it also facilitates subsequent maintenance in case the vibrating motor 30 malfunctions. To facilitate the installation of the vibrating motor 30, the screening device 100 also includes a mounting frame 70, which spans across the top of the screening hopper 21 along the direction perpendicular to the material discharge direction, for mounting the vibrating motor 30. Thus, by providing the mounting frame 70 on the top of the screening hopper 21, the vibrating motor 30 can be installed on the top of the screening hopper 21.

[0035] Furthermore, when the mounting frame 70 is installed, it is positioned close to the feed hopper 60 to define the material inlet 23 between the mounting frame 70 and the feed hopper 60. In this way, the mounting frame 70 effectively blocks the material falling from the screening plate 22, preventing the material from falling out of the feed hopper 60.

[0036] In one embodiment of this utility model, to prevent the screening hopper 21 from vibrating excessively when the vibrating motor 30 vibrates, the screening device 100 further includes multiple sets of guide structures. Each set of guide structures is fitted with a spring 40. The guide structure includes two guide rods that are separated from each other. One guide rod is connected to the screening hopper 21, and the other guide rod is connected to the frame 10. By providing two separate guide rods for each guide structure, the guide rods not only guide the extension and retraction of the spring 40, but also, because the guide rods are rigid structures and axially fixed, they prevent the screening hopper 21 from vibrating excessively when the vibrating motor 30 vibrates, as the spring 40 can bend with multiple degrees of freedom. Furthermore, because there is a gap between the guide rods, the spring 40 can not only extend and retract in the vertical direction, but also has a certain degree of bending freedom, thereby achieving the screening effect.

[0037] The aforementioned screening device 100, by configuring each screening plate 22 to include a screening section 221 and a discharge section 222, wherein the screening section 221 screens the material and the discharge section 222 is inclined downward for discharging and collecting the material; by setting the width of the bottom plate 2221 to gradually decrease away from the screening section 221 along the direction perpendicular to the material discharge direction, the material is organized, making it easier for the container to receive it; by setting the area of ​​the screening section 221 with screen holes 223 to be 1 / 2-2 / 3 of the area of ​​the screening section 221, and by not setting screen holes 223 on a part of the screening section 221, the structural strength of the entire screening plate 22 is ensured; A baffle 50 is installed above each discharge section 222 connecting to the screening section 221. The baffle 50 blocks the flowing material and prevents it from falling off the screening plate 22 when it vibrates. A feed hopper 60 is also installed on the screening hopper 21 to facilitate centralized feeding of materials and prevent scattering during feeding. The vibrating motor 30 is installed on the top of the screening hopper 21, which not only facilitates the installation of the vibrating motor 30, but also facilitates disassembly and maintenance in the future. Two separate guide rods are set in each spring 40. The guide rods not only guide the extension and contraction of the spring 40, but also prevent the vibrating motor 30 from vibrating and vibrating excessively due to the bending of the spring 40 with multiple degrees of freedom during vibrating screening.

[0038] Although the present invention has been disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced by similar or equivalent elements known to those skilled in the art.

Claims

1. A screening device (100) for screening material, characterized in that, The screen device (100) comprises: a rack (10); a screening structure (20) movably mounted on the rack (10), comprising a screening hopper (21) and a plurality of screening plates (22) arranged in the screening hopper (21), the mesh size of the mesh holes (223) of the plurality of screening plates (22) gradually decreases from top to bottom of the rack (10), and each of the screening plates (22) is arranged to be inclined downward toward the bottom of the rack (10), each of the screening plates (22) comprises a screening section (221) and a discharge section (222); a vibrating motor (30) mounted on the screening hopper (21) for driving the screening hopper (21) and the plurality of screening plates (22) to vibrate; a plurality of springs (40) arranged separately and connected between the screening hopper (21) and the rack (10); a plurality of baffles (50), each of the baffles (50) is connected to the screening hopper (21), and the baffle (50) extends in a direction perpendicular to the discharge direction of the material, and each of the discharge sections (222) is provided with a baffle (50) above the screening section (221).

2. The screening apparatus (100) according to claim 1, characterized in that The screening section (221) is located in the screening hopper (21) and is provided with the mesh holes (223), and the discharge section (222) is located outside the screening hopper (21), and the plurality of discharge sections (222) have different orientations.

3. The screening apparatus (100) according to claim 2, characterized in that The discharge section (222) comprises a bottom plate (2221) and two blocking plates (2222), the two blocking plates (2222) are arranged on both sides of the bottom plate (2221), and the two blocking plates (2222) define a material discharge port (24) therebetween, and each of the blocking plates (2222) is arranged perpendicular to the bottom plate (2221).

4. The screening apparatus (100) according to claim 3, characterized in that In a direction perpendicular to the discharge direction of the material, the width of the bottom plate (2221) gradually decreases away from the screening section (221).

5. The screening apparatus (100) according to any one of claims 2-4, characterized in that, The area of the region of the screening section (221) provided with the mesh holes (223) is 1 / 2-2 / 3 of the area of the screening section (221), and the region provided with the mesh holes (223) is arranged close to the material inlet position of the screening hopper (21).

6. The screening apparatus (100) according to any one of claims 1-4, characterized in that, The screening device (100) further comprises a feeding hopper (60) for feeding material to the uppermost screening plate (22), which comprises a support plate (61) and a surrounding plate (62) surrounding three adjacent sides of the support plate (61).

7. The screening device (100) according to claim 6, wherein: the screening device (100) further comprises a mounting rack (70) arranged on the top of the screening hopper (21) in a direction perpendicular to the discharge direction of the material, for mounting the vibrating motor (30).

8. The screening apparatus (100) according to claim 7, characterized in that The mounting rack (70) is arranged close to the feeding hopper (60) to define a material inlet port (23) with the feeding hopper (60).

9. The screening apparatus (100) according to any one of claims 1-4, characterized in that, The screening device (100) further comprises a plurality of sets of guide structures, one set of the guide structures being sheathed with one spring (40), the guide structures comprising two guide rods arranged in phase separation, one guide rod being connected with the screening bucket (21) and one guide rod being connected with the rack (10).

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