Graphite flake raw material screening device

Abstract

The utility model provides a graphite flake raw material screening device which comprises a plurality of frames and a dustproof cover and is driven by a driving assembly. The frame is sequentially provided with a first discharge port for discharging impurities, a second discharge port for discharging graphite flake raw materials and a third discharge port from top to bottom; the dustproof cover is provided with a feeding port used for feeding materials into the raw material screening device. A second filter screen for screening impurities is arranged below the frame close to the position of the feeding hole, and a first filter screen for screening graphite flake raw materials with different particle sizes is arranged above the frame close to the position of the feeding hole; the second filter screen and the first filter screen each comprise a screen frame, and a cavity used for containing the screen is formed in each screen frame. According to the graphite flake raw material screening device, impurities can be screened, graphite flake raw materials with different granularities can be screened, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite sheet raw material screening, in particular to a graphite sheet raw material screening device. Background Art

[0002] Graphite raw materials are required in the processing of graphite sheets. Mixing graphite raw materials with uneven particle sizes will lead to uneven electrical conductivity, thermal conductivity, and strength of the graphite sheets, which in turn affects the overall performance of the finished graphite sheets. At the same time, removing impurities from the raw materials can better control the thickness and density of the product, thereby improving the quality of the finished graphite sheets.

[0003] In the production process of graphite sheets, when a screening device is used to screen a mixture of different particle sizes, the flowability of graphite particles is affected by various factors such as particle size and shape. Consequently, it is difficult to simultaneously remove impurities from the raw materials and finely screen the graphite raw materials using the screening device.

[0004] Patent publication number: CN 221311500 U discloses a graphite raw material particle sorting device, including a connecting shell, a first sorting net and a first motor, etc. The first sorting net is connected to the inside of the connecting shell, and the first motor is connected to the front side of the connecting shell. When a larger graphite raw material is needed, the utility model pushes the graphite raw material onto a transmission member for transmission and collection, and when a smaller graphite raw material is needed, the larger graphite raw material is pushed onto a second sorting net for crushing, thereby achieving the effect of being able to perform different processing methods on the screened graphite raw material according to different graphite raw material usage requirements, thereby improving the utilization rate of the graphite raw material. However, when using this device, only the graphite raw material can be screened in multiple stages, but impurities in the raw material cannot be removed at the same time.

[0005] In view of this, how to solve the defects in the above technical solutions has become one of the problems to be solved urgently in the field of graphite sheet raw material screening technology. Utility Model Content

[0006] In view of the problems existing in the background technology, the present invention provides a graphite sheet raw material screening device, including several frames, dust covers, and driven by a drive assembly; the frames are sequentially provided with a first discharge port for discharging impurities, a second discharge port for discharging graphite sheet raw materials, and a third discharge port for discharging graphite sheet raw materials from top to bottom; the dust cover is provided with a feed port for feeding materials into the raw material screening device; and a second filter screen for screening impurities is provided below the frame near the feed port, and a first filter screen for screening graphite sheet raw materials of different particle sizes is provided above the frame at the feed port; the second filter screen and the first filter screen both include a grid, and the grid is provided with a cavity for accommodating the screen, and the grid is connected to the two adjacent frames by fasteners. The present invention can achieve impurity screening and greatly improve work efficiency by being able to screen graphite sheet raw materials of different particle sizes.

[0007] Optionally, the fastener is annular and has an open configuration. The fastener includes a groove body, the inner wall of the groove body wraps the outer walls of the grid and its two adjacent groups of frames, and the fastener also includes a compression piece.

[0008] Optionally, a connecting piece is installed on the end surface of the fastener away from the grid, and the shaft end of the fastener with the pressing piece is threadedly connected to the fastening nut, and the pressing piece abuts against the end surface of the connecting piece.

[0009] The shaft end portion away from the pressing plate passes through the sphere, and threaded holes are provided on the sphere and the connecting plate at a position close to the sphere, and bolt connectors are provided in the threaded holes.

[0010] Optionally, a screen is mounted in the grid of the second filter screen, and sieve holes are provided on both the grid and the screen. Four groups of partitions are provided on the screen of the second filter screen, and are arranged perpendicular to each other, so that two adjacent groups of partitions are arranged at 90°.

[0011] Optionally, the four groups of partitions provided on the screen of the first filter screen are arranged as arc-shaped plates, and the spiral angle between two adjacent groups of partitions is 10-35°, and the aperture of the screen gradually decreases from top to bottom;

[0012] The thickness of the partition is 6-17 mm.

[0013] Optionally, at least one set of fixing rings is provided in the cavity between the screen and the grid, the fixing rings are welded to the screen, and the fixing rings are provided with at least one set of vibration balls, and the vibration balls are made of stainless steel balls.

[0014] Optionally, the grid, screen and fastener are connected via a connecting piece, the connecting piece includes a fastening screw, and both ends of the fastening screw are respectively provided with a base and a fastening end face which are integrated therewith, and a protruding end is provided on the fastening end face, and a snap-fit cavity for accommodating the protruding end is provided in the groove body, and is snap-fitted and connected to the protruding end.

[0015] Optionally, a plug-in end is provided on the end face of the base away from the raised end, and an arc-shaped connector is provided in the screen, and one end of the arc-shaped connector extends into the screen, and the other end of the arc-shaped connector extends into the frame, and the arc-shaped connector is made of elastic material.

[0016] Optionally, a plug-in slot body for accommodating the plug-in end is provided in the arc-shaped connecting piece, and a rubber ball is provided between the inner wall of the plug-in slot body and the top of the plug-in end, and the outer wall of the rubber ball is in contact with the plug-in slot body and the plug-in end respectively, and a spring is installed in the arc-shaped connecting piece located at the end face of the plug-in slot body.

[0017] In summary, the beneficial effects of the present invention are:

[0018] (1) The utility model can realize the screening of impurities and greatly improve the work efficiency by being able to screen graphite sheet raw materials of different particle sizes.

[0019] (2) When the raw material screening device is in working state, the material on the screen of the second filter screen passes through the partition set on the second filter screen, so that the material moves in a straight line from the middle to the outer circle. At this time, the larger materials and impurities are blocked by the screen, remain on the screen, and are discharged through the first discharge port, while the other graphite sheet raw materials pass through the second filter screen into the next group of frames adjacent to it for re-screening;

[0020] The screen on the first filter moves in a spiral motion from the middle to the outer circle, so that the material with smaller particle size passes through the screen on the first filter and falls into the frame below for fine screening, thereby achieving fine screening of the graphite sheet raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a graphite sheet raw material screening device of the present invention;

[0022] Figure 2 This is an overall exploded view of an embodiment of a graphite sheet raw material screening device of the utility model;

[0023] Figure 3 This is an exploded view of a filter screen used in an embodiment of a graphite sheet raw material screening device of the utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of the second filter screen in one embodiment of a graphite sheet raw material screening device of the utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of a fastener used in an embodiment of a graphite sheet raw material screening device of the utility model;

[0026] Figure 6 For this utility model Figure 5 A magnified view of the structure at position A in the middle;

[0027] Figure 7 For this utility model Figure 2 A magnified view of the structure at position B in the middle;

[0028] Figure 8 This is a two-dimensional diagram of the structure of the connector portion of an embodiment of a graphite sheet raw material screening device of the present invention.

[0029] Reference numerals:

[0030] 100. Raw material screening device;

[0031] 1. Dust cover;

[0032] 2. The first discharge port;

[0033] 3. Feed inlet;

[0034] 4. The second discharge port;

[0035] 5. The third discharge port;

[0036] 6. Spring;

[0037] 7. Drive components;

[0038] 8. Fastener; 801. Trough; 802. Pressing piece; 803. Bolt connector; 804. Fastening nut; 805. Shaft; 806. Ball;

[0039] 9. Framework;

[0040] 10. First filter screen; 101. Screen; 102. Partition; 103. Screen hole; 104. Vibrating ball; 105. Fixing ring; 106. Grid;

[0041] 11. Second filter screen;

[0042] 121. Base; 122. Fastening screw; 123. Fastening end face; 124. Raised end; 125. Rubber ball; 126. Plug-in end; 127. Arc-shaped connector; 128. Spring; 129. Plug-in slot. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions, and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a more thorough understanding of the present invention and to fully convey the concept of the present invention to those skilled in the art.

[0044] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are contradictory.

[0045] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0046] Example 1

[0047] like Figures 1 to 8 As shown, this embodiment provides a graphite sheet raw material screening device 100, including several frames 9, a drive assembly 7 and a dust cover 1. The drive assembly is preferably a vibration motor. By starting the drive assembly 7, the material is driven to move on the filter screen. The dust cover 1 is provided with a feed port 3 for feeding the material into the raw material screening device 100. The frame 9 is provided with a first discharge port 2 for discharging impurities, a second discharge port 4 for discharging graphite sheet raw materials, and a third discharge port 5 in sequence from top to bottom (from the end close to the feed port 3 to the end close to the drive assembly);

[0048] A second filter screen 12 for filtering impurities is provided below the frame 9 near the feed port 3.

[0049] A first filter screen 10 for screening graphite sheets of different particle sizes is provided above the frame 9 at the feed port of the raw material.

[0050] The second filter screen and the first filter screen 10 both include a grid 106 , and a cavity for accommodating the screen 101 is provided in the grid 106 , and the grid 106 is connected to the two adjacent sets of frames 9 via fasteners 8 .

[0051] Furthermore, the fastener 8 includes a groove body 801. When the grid 106 is connected to its two adjacent groups of frames 9 for stacking and nesting, the inner wall of the groove body 801 wraps the outer wall of the grid 106 and its two adjacent groups of frames 9, so that the upper frame 9 presses the grid 106 against the top of the lower frame 9, and the grid 106 is connected to its two adjacent groups of frames 9 through the fastener 8.

[0052] The fastener 8 is annular and has an open configuration. In order to enhance the fastening property of the connection between the grid 106 and the two adjacent groups of frames, a connecting piece is installed on the end face of the fastener away from the grid 106 by means of a fixed connection such as gluing, and the end of the shaft 805 of the fastener 8 having a clamping piece 802 is threadedly connected to the fastening nut 804, and the clamping piece 802 abuts against the end face of the connecting piece.

[0053] The end of the shaft 805 away from the pressing piece 802 passes through the sphere 806, and threaded holes are opened on the sphere 806 and the connecting piece near the sphere, and bolt connectors 803 are set in the threaded holes.

[0054] When in use, it is only necessary to pass the screw of the bolt connector 803 through the threaded holes on the connecting piece and the sphere from top to bottom for threaded connection, and then tighten the nut of the bolt connector 803 to achieve a fixed connection.

[0055] In the production process of graphite sheets, when using a screening device to screen mixed materials of different particle sizes, the fluidity of graphite particles is affected by various factors such as particle size and shape. Therefore, it is difficult to remove impurities from the raw materials and finely screen the graphite raw materials. In order to solve the above technical problems, please refer to Figure 2 、 Figure 3 and Figure 4As shown, a screen 101 is mounted in the grid 106 of the second filter screen 11, and sieve holes 103 are provided on both the grid 106 and the screen 101. Four groups of partitions 102 are provided on the screen 101 of the second filter screen 11, and are arranged perpendicular to each other so that the two adjacent groups of partitions 102 are arranged at 90°.

[0056] In this embodiment, when the raw material screening device is in working condition, the material on the screen 101 of the second filter screen 11 moves in a straight line from the middle to the outer circle, and is then screened through the screen. At this time, larger materials and impurities are blocked by the screen, remain on the screen, and are discharged through the first discharge port 2, while other graphite sheet raw materials pass through the second filter screen into the next group of frames adjacent to it for re-screening.

[0057] Furthermore, the four groups of partitions 102 provided on the screen 101 of the first filter screen 10 are arc-shaped plates, and the spiral angle between two adjacent groups of partitions 102 is 10-35 degrees. The aperture of the screen 101 decreases gradually from top to bottom.

[0058] Furthermore, the thickness of the partition 102 is 6-17 mm.

[0059] In this embodiment, when the raw material screening device is in working state, the screen 101 on the first filter 10 moves in a spiral trajectory from the middle to the outer circle, so that the material with smaller particle size passes through the screen on the first filter 10 and falls into the frame below for screening, and the screened material is discharged through the second discharge port and the third discharge port respectively.

[0060] In actual application, due to the small particle size of graphite sheet raw materials, it is easy to cause blockage during discharge. In order to solve the above technical problems, please refer to Figure 3 As shown, at least one set of fixing rings 105 is provided in the cavity between the screen 101 and the grid 106. The fixing rings 105 are welded to the screen 101, and the fixing rings 105 are provided with at least one set of vibration balls 104, and the vibration balls 104 are made of stainless steel balls.

[0061] In this embodiment, when the raw material screening device is in working state, the vibration ball set on the screen will be thrown up under the vibration force and continuously hit the grid 106 and screen 101 on both sides, thereby greatly reducing the blockage of raw material particle size.

[0062] Example 2:

[0063] See also Figure 2 、 Figure 7 and Figure 8As shown, in order to enhance the stability between the screen and the fastener during use, further improvements are made on the basis of the embodiment; the grid 106 and the screen 101 and the fastener 8 are connected by a connecting piece, and the connecting piece includes a fastening screw 122, and the two ends of the fastening screw 122 are respectively provided with a base 121 and a fastening end face 123 which are integrated therewith, and a protruding end 124 is provided on the fastening end face 123, and a snap-fit cavity for accommodating the protruding end 124 is provided in the trough body 801, and is snap-fitted and connected with the protruding end 124.

[0064] Furthermore, a plug-in end 126 is provided on the end face of the base 121 away from the raised end 124, and an arc-shaped connecting piece 127 is provided in the screen 101, and one end of the arc-shaped connecting piece 127 extends into the screen 101, and the other end of the arc-shaped connecting piece 127 extends into the grid 106, and the arc-shaped connecting piece 127 is made of elastic material.

[0065] Furthermore, a plug-in slot 129 for accommodating the plug-in end 126 is provided in the arc-shaped connecting member 127, and a rubber ball 125 is provided between the inner wall of the plug-in slot and the top of the plug-in end 126, and the outer wall of the rubber ball 125 respectively contacts the plug-in slot 129 and the plug-in end 126.

[0066] Furthermore, a spring 128 is installed in the arc-shaped connecting piece located on the end surface of the plug-in slot 129.

[0067] In this embodiment, when the screen, the grid and the fastener need to be connected, it is only necessary to extend the protruding end 124 of the connector into the snap-fit cavity of the trough 801 for snap-fit connection;

[0068] Then, by rotating the fastening screw 122, it passes through the threaded holes of the frame 106 and the screen 101 from the outside to the inside, and continues to screw in until the plug-in end 126 set on the fastening screw 122 continues to move toward the position of the plug-in slot 129. When the plug-in end 126 completely contacts the inner wall of the plug-in slot 129, continue to rotate the fastening screw 122, thereby continuing to generate a driving force and continuously compressing the spring, causing the spring 128 to undergo elastic deformation.

[0069] By adding connecting pieces, the fixed connection between the screen, the grid and the fasteners is improved.

[0070] The use process and working principle of this utility model:

[0071] When the present embodiment is in use, the graphite sheet raw material is fed into the raw material screening device through the feed port 3, and the driving assembly 7 is started at the same time, which drives the raw material screening device to vibrate. At this time, under the action of the vibration force, the material on the screen 101 of the second filter screen 11 moves in a straight line from the middle to the outer circle, and then passes through the screen for screening. At this time, larger materials and impurities are blocked by the screen, remain on the screen, and are discharged through the first discharge port 2;

[0072] The other graphite sheet raw materials pass through the second filter screen and enter the next set of frames adjacent to it. The screen 101 on the first filter screen 10 moves in a spiral trajectory from the middle to the outer circle, so that the materials with smaller particle sizes pass through the screen on the first filter screen 10 and fall into the frame below for screening. The screened materials are discharged through the second discharge port and the third discharge port respectively.

[0073] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A graphite sheet raw material screening device, characterized in that: It includes several frames and dust covers, and is driven by a driving component; the frames are provided with a first discharge port for discharging impurities, a second discharge port for discharging graphite sheet raw materials, and a third discharge port from top to bottom; the dust cover is provided with a feed port for feeding materials into the raw material screening device; and a second filter screen for screening impurities is provided below the frame near the feed port, and a first filter screen for screening graphite sheet raw materials of different particle sizes is provided above the frame at the feed port; the second filter screen and the first filter screen both include a grid, and a cavity for accommodating the screen is provided in the grid, and the grid is connected to the two adjacent groups of frames by fasteners.

2. The graphite sheet raw material screening device according to claim 1, characterized in that: The fastener is annular and has an opening. The fastener includes a groove body, the inner wall of the groove body wraps the grid and the outer walls of the two adjacent groups of frames. The fastener also includes a compression piece.

3. The graphite sheet raw material screening device according to claim 2, characterized in that: A connecting piece is installed on the end surface of the fastener away from the grid, and the shaft end of the fastener with a pressing piece is threadedly connected to the fastening nut, and the pressing piece abuts against the end surface of the connecting piece. The shaft end portion away from the pressing plate passes through the sphere, and threaded holes are provided on the sphere and the connecting plate at a position close to the sphere, and bolt connectors are provided in the threaded holes.

4. The graphite sheet raw material screening device according to claim 1, characterized in that: The second filter screen has a screen mounted in the grid, and both the grid and the screen are provided with screen holes. The second filter screen has four groups of partitions arranged perpendicular to each other, so that two adjacent groups of partitions are arranged at 90°.

5. The graphite sheet raw material screening device according to claim 1, characterized in that: The four groups of partitions arranged on the screen of the first filter screen are arranged in an arc-shaped plate, and the spiral angle between two adjacent groups of partitions is 10-35 degrees, and the aperture of the screen from top to bottom gradually decreases; The thickness of the partition is 6-17 mm.

6. The graphite sheet raw material screening device according to claim 1, characterized in that: At least one set of fixing rings is arranged in the cavity between the screen and the grid, the fixing rings are welded to the screen, and the fixing rings are provided with at least one set of vibration balls, and the vibration balls are made of stainless steel balls.

7. The graphite sheet raw material screening device according to claim 1, characterized in that: The grid, screen and fastener are connected by a connecting piece, and the connecting piece includes a fastening screw, and the two ends of the fastening screw are respectively provided with a base and a fastening end face that are integrated therewith, and a convex end is provided on the fastening end face, and a snap-fit cavity for accommodating the convex end is opened in the groove body, and is snap-fitted and connected with the convex end.

8. The graphite sheet raw material screening device according to claim 7, characterized in that: A plug-in end is provided on the end face of the base away from the raised end, and an arc-shaped connector is provided in the screen, and one end of the arc-shaped connector extends into the screen, and the other end of the arc-shaped connector extends into the grid, and the arc-shaped connector is made of elastic material.

9. The graphite sheet raw material screening device according to claim 8, characterized in that: The arc-shaped connector is provided with a plug-in slot for accommodating the plug-in end, and a rubber ball is provided between the inner wall of the plug-in slot and the top of the plug-in end, and the outer wall of the rubber ball respectively contacts the plug-in slot and the plug-in end, and a spring is installed in the arc-shaped connector located at the end face of the plug-in slot.

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