Particle grading screening device

Abstract

The utility model discloses a particle grading screening device which comprises a machine frame and a shaking frame, the shaking frame is connected into the machine frame in a front-back sliding mode, and a vibration mechanism used for controlling the shaking frame to move front and back is arranged in the machine frame. The screening device comprises a shaking frame and a plurality of screening frames, the screening frames are stacked on the shaking frame up and down, each screening frame comprises an upper frame and a lower frame, two push plates distributed left and right are arranged in the upper frame, the push plates are connected through connecting rods, the push plate on the right side rightwards penetrates through the upper frame, and the push plate on the right side rightwards penetrates through the lower frame. The screening frames are arranged in an up-and-down stacking mode, so that workers can assemble, disassemble and combine the screening frames conveniently, and the screening device is suitable for various requirements and wide in application range. When the screening frame is in a stacked state, screened thermoplastic elastomers in the screening frame can be pushed out, and workers can conveniently dismantle and take away the screening frame after follow-up screening work is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of material screening, in particular to a particle grading and screening device. Background Art

[0002] Thermoplastic elastomer particles, also known as artificial rubber or synthetic rubber, are in granular form. When processing, workers usually need to melt them into liquid state and perform injection molding.

[0003] Since the sizes of thermoplastic elastomer particle raw materials are different, in order to make the melting time of thermoplastic elastomer particles appropriate and avoid the situation of solid-fluid mixing caused by insufficient melting time, it is necessary to screen the sizes of thermoplastic elastomer particles in advance.

[0004] In the patent application No. 202121352098.9, a device for screening the sizes of thermoplastic elastomer particles is disclosed. This device realizes multi-stage screening by stacking filter frames up and down. However, this device has defects, that is, the thermoplastic elastomer particles will stay in the filter frame after screening. After screening is completed, the filter frame is relatively heavy and it is difficult for workers to remove the filter frame upward. Therefore, improvement is needed. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a particle grading and screening device to solve the problems mentioned in the above background art.

[0006] The utility model provides the following technical solution: a particle grading and screening device, including a frame and a shaking frame, the shaking frame is slidably connected to the frame back and forth, and a vibration mechanism for controlling the back-and-forth movement of the shaking frame is arranged in the frame;

[0007] It further includes a screening frame. There are several screening frames which are stacked up and down on the shaking frame. The screening frame includes an upper frame and a lower frame. The upper frame is fixed in the lower frame, and a screen is arranged in the upper frame. In the screening frames arranged up and down, the mesh number of the screen gradually increases in the downward direction;

[0008] Two push plates distributed left and right are arranged in the upper frame. The push plates are connected by a connecting rod. The right push plate penetrates through the upper frame to the right, and the push plate is attached to the upper side of the screen.

[0009] Preferably, the left push plate is adsorbed by a permanent magnet and attached to the left inner wall of the upper frame.

[0010] Preferably, it further includes a push handle. The push handle includes a handle part, a rod part and a connecting part. The connecting part is used to connect the left push plate in the upper frame.

[0011] Preferably, a threaded hole for threaded connection with the connecting portion is provided in the push plate on the left side.

[0012] Preferably, an upwardly extending fixing plate is provided on the upper side surface of the frame. A plurality of positioning holes that penetrate left and right and are equidistantly distributed up and down are provided in the fixing plate. A hook for hanging the push handle is provided on the left side surface of the fixing plate.

[0013] Preferably, a receiving groove that penetrates upward to accommodate the front-back movement of the rocking frame is provided in the frame. The vibration mechanism includes a spring groove provided in the rear side surface of the receiving groove. A clamping plate is connected to the bottom surface of the spring groove by a spring, and the clamping plate is fixed to the rocking frame.

[0014] A drive groove is provided in the front side surface of the receiving groove. A motor is provided on the upper side surface of the frame. The output shaft in the motor extends into the drive groove and is connected to the front side surface of the rocking frame through a crank-slider mechanism.

[0015] Preferably, a through groove that penetrates left and right is provided in the lower frame.

[0016] The present utility model provides a particle grading and screening device, which has the following beneficial effects:

[0017] In the present utility model, the screening frames for screening thermoplastic elastomer particles are arranged in a stacked manner up and down, which is convenient for workers to disassemble, assemble and combine, suitable for various needs, and has a wide range of applications.

[0018] When the screening frames in the present utility model are in a stacked state, the thermoplastic elastomer that has been screened inside can be pushed out, which is convenient for workers to remove and take away the screening frames after the subsequent screening work is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic external view of the present utility model;

[0020] Figure 2 is a schematic right view of the present utility model;

[0021] Figure 3 is Figure 1 a schematic external view of one screening frame in

[0022] Figure 4 is a schematic external view of another perspective of the present utility model.

[0023] In the figure:

[0024] 11. Frame; 12. Rocking frame; 13. Screening frame; 14. Fixed plate; 15. Accommodating groove; 21. Upper frame; 22. Lower frame; 23. Pushing plate; 24. Sieve mesh; 25. Through groove; 26. Connecting rod; 31. Pushing handle; 32. Handle part; 33. Rod part; 34. Connecting part; 41. Spring groove; 42. Clamping plate; 43. Driving groove; 44. Motor. Detailed implementation manners

[0025] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Referring to Figures 1 - 4 , according to an embodiment of a particle grading and screening device of the present utility model, it includes a frame 11 and a rocking frame 12. The rocking frame 12 is slidably connected to the inside of the frame 11 in the front and rear directions, and a vibration mechanism for controlling the front and rear movement of the rocking frame 12 is provided inside the frame 11;

[0030] It further includes a screening frame 13. A plurality of the screening frames 13 are provided and stacked vertically on the shaking frame 12. The screening frame 13 includes an upper frame 21 and a lower frame 22. The upper frame 21 is fixed within the lower frame 22, and the outer wall of the upper frame 21 is attached to the inner wall of the lower frame 22. A screen 24 is provided within the upper frame 21. Among the vertically arranged screening frames 13, the mesh number of the screen 24 gradually increases in the downward direction. That is, when a conveyor belt or other equipment places thermoplastic elastomer particles in the uppermost screening frame 13, the vibration mechanism drives the shaking frame 12 and the screening frame 13 to move back and forth. At this time, the thermoplastic elastomer particles in the uppermost screening frame 13 will be screened among the respective screens 24. The large thermoplastic elastomer particles are located on the upper side, and the particles smaller than the thermoplastic elastomer particles are located on the lower side.

[0031] As Figure 3 described, when the screening frames 13 are stacked vertically, the upper frame 21 in the lower screening frame 13 is inserted into the lower frame 22 in the upper screening frame 13 to complete the vertical stacking.

[0032] In order to enable the thermoplastic elastomer particles screened on the screen 24 to be taken out when the screening frames 13 are in a vertically stacked state, two push plates 23 distributed left and right are provided within the upper frame 21. The push plates 23 are connected by a connecting rod 26. The right push plate 23 penetrates the upper frame 21 to the right. The push plate 23 is attached to the upper side of the screen 24, and a through groove 25 that penetrates left and right is provided within the lower frame 22.

[0033] When the push plate 23 moves to the right, the left push plate 23 will push the thermoplastic elastomer particles located on the upper side of the screen 24 and push them out of the upper frame 21 to the right. At this time, the thermoplastic elastomer particles will fall out after passing through the notch within the upper frame 21 and the through groove 25 within the lower frame 22 of the screening frame 13 above this screening frame 13. After the push plate 23 retracts to the left and resets, the right push plate 23 can cover the notch within the upper frame 21 to prevent the thermoplastic elastomer particles on the screen 24 from falling out.

[0034] In order to prevent the push plate 23 from shifting left and right when the shaking frame 12 and the screening frame 13 vibrate back and forth, causing the thermoplastic elastomer particles on the screen 24 to fall out automatically, the left push plate 23 is adsorbed by a permanent magnet and attached to the left inner wall of the upper frame 21.

[0035] In order to facilitate the control of the left - right position of the push plate 23, a push handle 31 is further included. The push handle 31 includes a handle part 32, a rod part 33 and a connecting part 34. The connecting part 34 is used to connect the push plate 23 on the left side within the upper frame 21. Specifically, the connecting part 34 is a threaded part, and a threaded hole for threaded connection with the connecting part 34 is provided in the left - hand push plate 23. That is, the staff can insert the connecting part 34 in the push handle 31 into the upper frame 21 and thread - connect it with the push plate 23, and then can push and pull the push handle 31 to make the push plate 23 move left and right, and push the thermoplastic elastomer particles located therein.

[0036] In order to facilitate the staff to align the connecting part 34 with the threaded hole in the push plate 23, a fixing plate 14 extending upward is provided on the upper side surface of the frame 11. A plurality of positioning holes that penetrate left - right and are equidistantly distributed up - and - down are provided in the fixing plate 14. The staff can insert the push handle 31 into the positioning hole and then rotate it to connect with the threaded hole. In addition, in order to facilitate the placement of the push handle 31, a hook for hanging the push handle 31 is provided on the left - hand side surface of the fixing plate 14.

[0037] In this embodiment, a receiving groove 15 that penetrates upward to accommodate the front - and - back movement of the shaking frame 12 is provided in the frame 11. The vibration mechanism includes a spring groove 41 provided in the rear - side surface of the receiving groove 15. The bottom surface of the spring groove 41 is connected to a clamping plate 42 through a spring, and the clamping plate 42 is fixed to the shaking frame 12.

[0038] A driving groove 43 is provided in the front - side surface of the receiving groove 15. A motor 44 is provided on the upper side surface of the frame 11. The output shaft in the motor 44 extends into the driving groove 43 and is connected to the front - side surface of the shaking frame 12 through a crank - slider mechanism. That is, when the motor 44 is powered on, the crank - slider mechanism can drive the shaking frame 12 and the screening frame 13 to move back and forth periodically. And the motor 44 is not provided with a self - locking function. After the motor 44 is powered off, the spring and the clamping plate 42 can make the screening frame 13 and the shaking frame 12 in the most forward position, so as to facilitate the alignment of the push handle 31 with the threaded hole.

[0039] It should be additionally noted that the push plate 23 only needs to push away most of the thermoplastic elastomer particles on the screen 24, so as to facilitate the staff to take out the screening frame 13 after reducing the weight.

[0040] The above - mentioned are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any person skilled in the art within the field of the present invention

[0041] Within, any changes or modifications made are covered by the patent scope of the present utility model.

Claims

1. A particle grading and screening device, comprising a frame (11) and a shaking frame (12), characterized in that: The rocking frame (12) is slidably connected to the front and back within the frame (11), and a vibration mechanism for controlling the forward and backward movement of the rocking frame (12) is provided within the frame (11). It further includes a screening frame (13). A plurality of the screening frames (13) are provided and stacked vertically on the rocking frame (12). The screening frame (13) includes an upper frame (21) and a lower frame (22). The upper frame (21) is fixed within the lower frame (22), and a screen (24) is provided within the upper frame (21). Among the screening frames (13) arranged vertically, the mesh number of the screen (24) gradually increases in the downward direction. Two push plates (23) distributed left and right are provided within the upper frame (21). The push plates (23) are connected by a connecting rod (26). The right push plate (23) penetrates through the upper frame (21) to the right, and the push plate (23) is attached to the upper side of the screen (24).

2. The particle classification and screening device according to claim 1, characterized in that: The left push plate (23) is adsorbed by a permanent magnet and attached to the left inner wall of the upper frame (21).

3. A particle classification and screening device according to claim 1, characterized in that: It further includes a push handle (31). The push handle (31) includes a handle portion (32), a rod portion (33), and a connecting portion (34). The connecting portion (34) is used to connect the left push plate (23) within the upper frame (21).

4. A particle classification and screening device according to claim 3, characterized in that: A threaded hole for threaded connection with the connecting portion (34) is provided within the left push plate (23).

5. A particle classification and screening device according to claim 3, characterized in that: On the upper side surface of the frame (11), there is an upwardly extending fixing plate (14). A plurality of positioning holes that penetrate left and right and are equally spaced vertically are provided within the fixing plate (14). A hook for hanging the push handle (31) is provided on the left side surface of the fixing plate (14).

6. The particle classification and screening device according to claim 1, characterized in that: An accommodation groove (15) that penetrates upward to accommodate the forward and backward movement of the rocking frame (12) is provided within the frame (11). The vibration mechanism includes a spring groove (41) provided on the rear side surface of the accommodation groove (15). The bottom surface of the spring groove (41) is connected to a clamping plate (42) by a spring, and the clamping plate (42) is fixed to the rocking frame (12). A drive groove (43) is provided on the front side surface of the accommodation groove (15). A motor (44) is provided on the upper side surface of the frame (11). The output shaft within the motor (44) extends into the drive groove (43) and is connected to the front side surface of the rocking frame (12) through a crank-slider mechanism.

7. A particle grading and screening device according to claim 1, characterized in that: A through groove (25) that penetrates left and right is provided within the lower frame (22).

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