Cathode material screening device

Abstract

The utility model provides a positive electrode material screening device which comprises a screen frame structure, a vibrating screen spring base plate and a buckle structure, and the screen frame structure comprises an upper layer screen frame, an upper screen mesh, a middle layer screen frame, a lower screen mesh, a lower layer screen frame and a plurality of elastic sealing rings. An elastic sealing ring used for separation is arranged among an upper-layer screen frame, an upper screen mesh, a middle-layer screen frame, a lower screen mesh and a lower-layer screen frame which are sequentially arranged, and a vibrating screen spring base plate is connected to the bottom of the lower-layer screen frame. The buckle structure comprises a first buckle base, a second buckle base and a rotating buckle assembly, the first buckle base is installed on the upper-layer screen frame, the second buckle base is installed on the lower-layer screen frame, and the rotating buckle assembly is installed on the middle-layer screen frame. All layers of components of the screen frame structure are separated through the elastic sealing ring, collision and abrasion of all layers of components of the screen frame structure are reduced, the rotating buckle assembly is connected with the first buckle base and the second buckle base in a buckled mode, the acting force of all layers of components of the screen frame structure is increased, and the sealing effect is better.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery powder production, and in particular to a positive electrode material screening device. Background Art

[0002] In the production line of ternary cathode materials, strict control is required for metal shavings and other foreign matter contained in the powder. Therefore, the production line must ensure that the on-site environment is as clean as possible, free of foreign matter, and that the production equipment is in good working order.

[0003] The strict requirements for foreign matter content in powders in ternary cathode material production lines increase on-site management requirements and equipment wear. During actual operation, the cathode material screening device experiences intense vibrations due to direct metal-to-metal contact between components. This causes relative movement and collision between the metal parts, resulting in damage to the equipment coating and the generation of metal shavings. This, in turn, impacts the quality of the ternary cathode material and increases manufacturing and management costs. Utility Model Content

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a positive electrode material screening device that reduces collisions, has good sealing effects, and is quick to assemble and disassemble.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A positive electrode material screening device includes a screen frame structure, a vibrating screen spring chassis and a snap structure.

[0007] The screen frame structure includes an upper screen frame, an upper screen, a middle screen frame, a lower screen, a lower screen frame and a plurality of elastic sealing rings. The upper screen is arranged between the upper screen frame and the middle screen frame, the lower screen is arranged between the middle screen frame and the lower screen frame, the elastic sealing ring is arranged between the upper screen frame and the upper screen, the elastic sealing ring is arranged between the upper screen and the middle screen frame, the elastic sealing ring is arranged between the middle screen frame and the lower screen, the elastic sealing ring is arranged between the lower screen and the lower screen frame, and the vibrating screen spring chassis is connected to the bottom of the lower screen frame;

[0008] The snap-on structure includes a first snap seat, a second snap seat and a rotating snap assembly. The first snap seat is installed on the upper screen frame, the second snap seat is installed on the lower screen frame, and the rotating snap assembly is installed on the middle screen frame. The rotating snap assembly is snapped with the first snap seat and the second snap seat respectively.

[0009] In one embodiment, each of the elastic sealing rings has a positioning area, the upper screen frame is protruded with a first protrusion, the bottom of the upper screen is protruded with a second protrusion, the bottom of the middle screen frame is protruded with a third protrusion, and the bottom of the lower screen is protruded with a fourth protrusion. The first protrusion, the second protrusion, the third protrusion and the fourth protrusion respectively correspond to the positioning areas of the elastic sealing ring thereunder and are connected to the positioning areas.

[0010] In one embodiment, the positioning area is provided with a positioning through-hole, the top of the upper screen is provided with a first positioning groove, the first protrusion is passed through the positioning through-hole and embedded in the first positioning groove; the middle screen frame is provided with a second positioning groove, the second protrusion is passed through the positioning through-hole and embedded in the second positioning groove; the lower screen is provided with a third positioning groove, the third protrusion is passed through the positioning through-hole and embedded in the third positioning groove; the lower screen frame is provided with a fourth positioning groove, the fourth protrusion is passed through the positioning through-hole and embedded in the fourth positioning groove.

[0011] In one embodiment, the positioning area is provided with a positioning groove, at least a portion of the first protrusion is accommodated in the corresponding positioning groove, at least a portion of the second protrusion is accommodated in the corresponding positioning groove, at least a portion of the third protrusion is accommodated in the corresponding positioning groove, and at least a portion of the fourth protrusion is accommodated in the corresponding positioning groove.

[0012] In one embodiment, a first placement groove is respectively provided on a side of the upper screen close to the upper screen frame and a side of the upper screen close to the middle screen frame, and an elastic sealing ring is provided on the outer wall of each of the first placement grooves, and a second placement groove is respectively provided on a side of the lower screen close to the middle screen frame and a side of the lower screen close to the lower screen frame, and an elastic sealing ring is provided on the outer wall of each of the second placement grooves.

[0013] In one embodiment, one side surface of the elastic sealing ring is a planar structure, and the other side surface of the elastic sealing ring is a concave arc structure.

[0014] In one embodiment, the rotating buckle assembly includes a connecting base, a first rotating shaft, a first buckle plate, a second rotating shaft and a second buckle plate, the connecting base is connected to the middle screen frame, the first rotating shaft is rotatably set on the connecting base, one end of the first buckle plate is fixedly connected to the first rotating shaft, the first buckle plate is used to buckle the first buckle seat, the second rotating shaft is rotatably set on the connecting base, one end of the second buckle plate is fixedly connected to the second rotating shaft, and the second buckle plate is used to buckle the second buckle seat.

[0015] In one embodiment, the buckle structure also includes a first fixing buckle and a second fixing buckle, one end of the first fixing buckle is rotatably connected to the first buckle seat, the first buckle plate is provided with a first fixing groove, the first fixing groove is used to clamp the first fixing buckle, one end of the second fixing buckle is rotatably connected to the second buckle seat, the second buckle plate is provided with a second fixing groove, the second fixing groove is used to clamp the second fixing buckle.

[0016] In one embodiment, the first buckle plate, the first buckle seat, the second buckle plate and the second buckle seat are all provided with a plurality of convex teeth, the plurality of convex teeth of the first buckle plate are engaged with the plurality of convex teeth of the first buckle seat, and the plurality of convex teeth of the second buckle plate are engaged with the plurality of convex teeth of the second buckle seat.

[0017] In one embodiment, the positive electrode material screening device further includes a discharge pipe, and the discharge pipe is connected to the lower screen frame.

[0018] Compared with the prior art, the present disclosure has at least the following advantages:

[0019] 1. The above-mentioned positive electrode material screening device separates the upper screen frame, upper screen, middle screen frame, lower screen and lower screen frame stacked in sequence through an elastic sealing ring, so that the mutual collision between the components of each layer of the screen frame structure is reduced, and the wear between the components of each layer of the screen frame structure is reduced, thereby avoiding the generation of metal chips and extending the service life of the positive electrode material screening device.

[0020] 2. By rotating the buckle assembly to buckle the first buckle seat and the second buckle seat respectively, the upper screen frame, the middle screen frame and the lower screen frame can be quickly fastened, which speeds up the installation speed of the upper screen frame, the middle screen frame and the lower screen frame, increases the force of each layer of the screen frame structure, makes the sealing effect of the elastic sealing ring better, and avoids material leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 An exploded view of a positive electrode material screening device according to an embodiment;

[0023] Figure 2 for Figure 1 An exploded view of an embodiment of a positive electrode material screening device is shown;

[0024] Figure 3for Figure 1 An exploded view of another embodiment of the positive electrode material screening device shown;

[0025] Figure 4 for Figure 1 The schematic structural diagram of the positive electrode material screening device shown is closed;

[0026] Figure 5 for Figure 1 Another structural schematic diagram of the positive electrode material screening device shown;

[0027] Figure 6 for Figure 1 A cross-sectional view of the elastic sealing ring is shown.

[0028] Reference numerals: 10 - cathode material screening device; 100 - screen frame structure; 110 - upper screen frame; 111 - first protrusion; 120 - upper screen; 121 - second protrusion; 1201 - first positioning groove; 1202 - first placement groove; 130 - middle screen frame; 131 - third protrusion; 1301 - second positioning groove; 140 - lower screen; 141 - fourth protrusion; 1401 - third positioning groove; 1402 - second placement groove; 150 - lower screen frame; 1501 - fourth positioning groove; 160 - spring Seal ring; 1601-positioning area; 1602-positioning through hole; 1603-positioning groove; 200-vibrating screen spring chassis; 300-snapping structure; 310-first buckle seat; 320-second buckle seat; 330-rotating buckle assembly; 331-connecting base; 332-first rotating shaft; 333-first buckle plate; 3301-first fixed groove; 334-second rotating shaft; 335-second buckle plate; 3302-second fixed groove; 340-first fixing buckle; 350-second fixing buckle; 400-discharge pipe. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0033] like Figures 1 to 3 As shown, the positive electrode material screening device 10 of an embodiment of the present disclosure includes a screen frame structure 100, a vibrating screen spring chassis 200 and a snap structure 300. The screen frame structure 100 includes an upper screen frame 110, an upper screen 120, a middle screen frame 130, a lower screen 140, a lower screen frame 150 and a plurality of elastic sealing rings 160. An elastic sealing ring 160 is respectively provided on both sides of the upper screen 120. The upper screen 120 is arranged between the upper screen frame 110 and the middle screen frame 130. Between the screen frames 130, an elastic sealing ring 160 is respectively provided on both sides of the lower screen 140. The lower screen 140 is arranged between the middle screen frame 130 and the lower screen frame 150. The vibrating screen spring chassis 200 is connected to the bottom of the lower screen frame 150. The vibrating screen spring chassis 200 is used to support the elastic vibration of the lower screen frame 150. The elastic sealing ring 160 is used to separate the contact between the various components. The upper screen 120 and the lower screen 140 are both used to screen the material.

[0034] Furthermore, the snap-on structure 300 includes a first snap-on seat 310, a second snap-on seat 320 and a rotating snap-on assembly 330. The first snap-on seat 310 is installed on the upper screen frame 110, the second snap-on seat 320 is installed on the lower screen frame 150, and the rotating snap-on assembly 330 is installed on the middle screen frame 130. The rotating snap-on assembly 330 is provided with two snap-on ends which are respectively snap-oned with the first snap-on seat 310 and the second snap-on seat 320, so that the upper screen frame 110, the middle screen frame 130 and the lower screen frame 150 are pressed together.

[0035] In one embodiment, the positive electrode material screening device also includes an ultrasonic transducer and a vibration motor. The vibration motor is fixed to the bottom of the lower screen frame 150, and the vibration motor drives at least one of the upper screen frame 110, the upper screen 120, the middle screen frame 130, and the lower screen 140 to vibrate; the vibration output end of the ultrasonic transducer is respectively connected to the upper screen 120 and the lower screen 140; the vibration output end of the ultrasonic transducer drives the upper screen 120 and the lower screen 140 to vibrate at high frequency, thereby accelerating the material screening speed of the upper screen 120 and the lower screen 140, thereby improving the material screening efficiency.

[0036] In this embodiment, when installing the screen frame structure 100, two elastic sealing rings 160 are respectively mounted on both ends of the upper screen 120, and two elastic sealing rings 160 are respectively mounted on both ends of the lower screen 140. The elastic sealing rings 160 separate the upper screen frame 110, the upper screen 120, the middle screen frame 130, the lower screen 140, and the lower screen frame 150, which are stacked in sequence. Then, the two buckling ends of the rotating buckle assembly 330 are rotated to quickly buckle with the first buckle seat 310 and the second buckle seat 320, so that the upper screen frame 110, the upper screen 120, the middle screen frame 130, the lower screen 140, and the lower screen frame 150 are compressed.

[0037] The positive electrode material screening device 10 described above separates the upper screen frame 110, upper screen 120, middle screen frame 130, lower screen 140, and lower screen frame 150 stacked in sequence by means of an elastic sealing ring 160, thereby reducing the mutual collision between the components of the screen frame structure 100 and reducing the wear between the components of the screen frame structure 100, thereby avoiding the generation of metal chips and extending the service life of the positive electrode material screening device 10. By rotating the buckle assembly 330 to buckle the first buckle seat 310 and the second buckle seat 320 respectively, the upper screen frame 110, the middle screen frame 130, and the lower screen frame 150 are quickly fastened together, accelerating the installation speed of the upper screen frame 110, the middle screen frame 130, and the lower screen frame 150, increasing the force of the components of the screen frame structure 100, and improving the sealing effect of the elastic sealing ring 160, thereby preventing material leakage.

[0038] like Figure 1 As shown, in one embodiment, each elastic sealing ring 160 has a positioning area 1601, the upper screen frame 110 is protruded with a first protrusion 111, the bottom of the upper screen 120 is protruded with a second protrusion 121, the bottom of the middle screen frame 130 is protruded with a third protrusion 131, and the bottom of the lower screen 140 is protruded with a fourth protrusion 141. The first protrusion 111, the second protrusion 121, the third protrusion 131 and the fourth protrusion 141 respectively correspond to the positioning areas 1601 of the elastic sealing ring 160 thereunder and are connected to the positioning areas 1601. In this embodiment, the first protrusion 111, the second protrusion 121, the third protrusion 131, and the fourth protrusion 141 are respectively connected to the positioning area 1601 of the corresponding elastic sealing ring 160, so that the position of the elastic sealing ring 160 is fixed, the elastic sealing ring 160 is prevented from being offset, and the fit between the upper screen frame 110, the upper screen 120, the middle screen frame 130, the lower screen 140 and the lower screen frame 150 is improved.

[0039] like Figure 2As shown, in one embodiment, the positioning area 1601 is provided with a positioning hole 1602, the top of the upper screen 120 is provided with a first positioning groove 1201, the first protrusion 111 is passed through the positioning hole 1602 and embedded in the first positioning groove 1201; the middle screen frame 130 is provided with a second positioning groove 1301, the second protrusion 121 is passed through the positioning hole 1602 and embedded in the second positioning groove 1301; the lower screen 140 is provided with a third positioning groove 1401, the third protrusion 131 is passed through the positioning hole 1602 and embedded in the third positioning groove 1401; the lower screen frame 150 is provided with a fourth positioning groove 1501, the fourth protrusion 141 is passed through the positioning hole 1602 and embedded in the fourth positioning groove 1501. In this embodiment, the first protrusion 111 cooperates with the first positioning groove 1201, and the corresponding elastic sealing ring 160 is fixed, so that the connection between the upper screen frame 110 and the upper screen 120 is tighter. The second protrusion 121 cooperates with the second positioning groove 1301, and the corresponding elastic sealing ring 160 is fixed, so that the connection between the upper screen 120 and the middle screen frame 130 is tighter. The third protrusion 131 cooperates with the third positioning groove 1401, and the corresponding elastic sealing ring 160 is fixed, so that the middle screen frame 130 The connection with the lower screen 140 is tighter, and the corresponding elastic sealing ring 160 is fixed by cooperating with the fourth protrusion 141 and the fourth positioning groove 1501, so that the connection between the lower screen 140 and the lower screen frame 150 is tighter; the elastic sealing ring 160 is fixed to prevent the elastic sealing ring 160 from shifting, and the upper screen frame 110, the upper screen 120, the middle screen frame 130, the lower screen 140 and the lower screen frame 150 are more compatible, reducing the collision and wear caused by the relative movement of the components of the screen frame structure 100.

[0040] like Figure 3 As shown, in one embodiment, a positioning groove 1603 is provided in the positioning area 1601, and at least a portion of the first protrusion 111 is received in the corresponding positioning groove 1603, at least a portion of the second protrusion 121 is received in the corresponding positioning groove 1603, at least a portion of the third protrusion 131 is received in the corresponding positioning groove 1603, and at least a portion of the fourth protrusion 141 is received in the corresponding positioning groove 1603. In this embodiment, the first protrusion 111, the second protrusion 121, the third protrusion 131, and the fourth protrusion 141 are respectively tightly fitted with the positioning groove 1603 of the corresponding elastic sealing ring 160, so that the corresponding elastic sealing ring 160 is fixed and the elastic sealing ring 160 has a better separation effect on the components of each layer of the screen frame structure 100, thereby reducing the collision and wear caused by the relative movement of the components of each layer of the screen frame structure 100.

[0041] like Figure 1As shown, in one embodiment, a first placement groove 1202 is respectively provided on the side of the upper screen 120 close to the upper screen frame 110 and the side of the upper screen 120 close to the middle screen frame 130, and an elastic sealing ring 160 is provided on the outer wall of each first placement groove 1202, and a second placement groove 1402 is respectively provided on the side of the lower screen 140 close to the middle screen frame 130 and the side of the lower screen 140 close to the lower screen frame 150, and an elastic sealing ring 160 is provided on the outer wall of each second placement groove 1402. In this embodiment, the corresponding elastic sealing ring 160 is installed and clamped in the first placement groove 1202 and the second placement groove 1402, so that the elastic sealing ring 160 is installed in a fixed position on the upper screen 120 and the lower screen 140, preventing the elastic sealing ring 160 from falling off from the upper screen 120 and the lower screen 140, thereby facilitating the stacking installation of the upper screen frame 110, the upper screen 120, the middle screen frame 130, the lower screen 140 and the lower screen frame 150.

[0042] like Figure 5 As shown, in one embodiment, one side of the elastic sealing ring 160 is a flat structure, and the other side of the elastic sealing ring 160 is a concave arc structure. In this embodiment, when the elastic sealing ring 160 is pressed against the screen frame or screen, the air in the concave arc surface of the elastic sealing ring 160 is displaced to form a vacuum, increasing the pressure and increasing the friction between the elastic sealing ring 160 and the screen frame or screen, thereby preventing relative movement.

[0043] like Figure 2 and Figure 4 As shown, in one embodiment, the rotating buckle assembly 330 includes a connecting base 331, a first rotating shaft 332, a first buckle plate 333, a second rotating shaft 334 and a second buckle plate 335, the connecting base 331 is connected to the middle screen frame 130, the first rotating shaft 332 is rotatably set on the connecting base 331, one end of the first buckle plate 333 is fixedly connected to the first rotating shaft 332, the first buckle plate 333 is used to buckle the first buckle seat 310, the second rotating shaft 334 is rotatably set on the connecting base 331, one end of the second buckle plate 335 is fixedly connected to the second rotating shaft 334, and the second buckle plate 335 is used to buckle the second buckle seat 320. In this embodiment, the first buckle plate 333 is quickly rotated along the first rotating shaft 332 to buckle the first buckle seat 310, so that the upper screen frame 110 and the middle screen frame 130 can be quickly disassembled and assembled, and the second buckle plate 335 is quickly rotated along the second rotating shaft 334 to buckle the second buckle seat 320, so that the middle screen frame 130 and the lower screen frame 150 can be quickly disassembled and assembled, thereby accelerating the installation speed of the components of each layer of the screen frame structure 100, thereby improving the working efficiency of the positive electrode material screening device 10.

[0044] like Figure 2As shown, in one embodiment, the buckle structure 300 also includes a first fixing buckle 340 and a second fixing buckle 350. The first fixing buckle 340 is rotatably connected to the first buckle seat 310. The first buckle plate 333 is provided with a first fixing groove 3301. The first fixing groove 3301 is used to clamp the first fixing buckle 340. The second fixing buckle 350 is rotatably connected to the second buckle seat 320. The second buckle plate 335 is provided with a second fixing groove 3302. The second fixing groove 3302 is used to clamp the second fixing buckle 350. In this embodiment, when the first buckle plate 333 is engaged with the first buckle seat 310, one end of the first fixing buckle 340 is stuck in the first fixing groove 3301, so that the first buckle plate 333 is clamped. When the second buckle plate 335 is engaged with the second buckle seat 320, one end of the second fixing buckle 350 is stuck in the second fixing groove 3302, so that the second buckle plate 335 is clamped, preventing the first buckle plate 333 and the first buckle seat 310 and the second buckle plate 335 and the second buckle seat 320 from loosening and falling off, so that the connection between the upper screen frame 110, the middle screen frame 130 and the lower screen frame 150 is tighter.

[0045] like Figure 2 As shown, in one embodiment, the first buckle plate 333, the first buckle seat 310, the second buckle plate 335 and the second buckle seat 320 are all provided with a plurality of convex teeth, the plurality of convex teeth of the first buckle plate 333 are engaged with the plurality of convex teeth of the first buckle seat 310, and the plurality of convex teeth of the second buckle plate 335 are engaged with the plurality of convex teeth of the second buckle seat 320. In this embodiment, the multiple protruding teeth of the first gusset plate 333 engage with the multiple protruding teeth of the first gusset seat 310, increasing the points of action between the first gusset plate 333 and the first gusset seat 310, thereby increasing the connection strength between the upper screen frame 110 and the middle screen frame 130. The multiple protruding teeth of the second gusset plate 335 engage with the multiple protruding teeth of the second gusset seat 320, increasing the points of action between the second gusset plate 335 and the second gusset seat 320, thereby increasing the connection strength between the middle screen frame 130 and the lower screen frame 150, making the connection between the various layers of the screen frame structure 100 tighter and the sealing effect between the various layers of the screen frame structure 100 better. The multiple protruding teeth of the first gusset seat 310 are all chamfered, and the multiple protruding teeth of the second gusset seat 320 are all chamfered. When the first buckle plate 333 is buckled into the first buckle seat 310, the multiple protruding teeth of the first buckle seat 310 are chamfered, which facilitates the multiple protruding teeth of the first buckle plate 333 to slide between the multiple protruding teeth of the first buckle plate 333. When the second buckle plate 335 is buckled into the second buckle seat 320, the multiple protruding teeth of the second buckle seat 320 are chamfered, which facilitates the multiple protruding teeth of the second buckle plate 335 to slide between the multiple protruding teeth of the second buckle plate 335, thereby facilitating the disassembly and assembly between the upper screen frame 110, the middle screen frame 130 and the lower screen frame 150.

[0046] like Figure 2 and Figure 5As shown, in one embodiment, the number of the first buckle seat 310, the second buckle seat 320 and the rotating buckle assembly 330 is multiple, the multiple first buckle seats 310 are arranged at intervals along the circumference of the upper screen frame 110, the multiple rotating buckle assemblies 330 are arranged at intervals along the circumference of the middle screen frame 130, and the multiple second buckle seats 320 are arranged at intervals along the circumference of the lower screen frame 150. In this embodiment, each rotating buckle assembly 330 is buckled with the corresponding first buckle seat 310 and the second buckle seat 320, so that the force between the upper screen frame 110, the middle screen frame 130 and the lower screen frame 150 is uniform, reducing the force of each rotating buckle assembly 330 buckled with the corresponding first buckle seat 310 and the second buckle seat 320, thereby extending the service life of the buckle structure 300.

[0047] like Figure 1 As shown, in one embodiment, the positive electrode material screening device 10 further includes a discharge pipe 400, which is connected to the lower screen frame 150. In this embodiment, the material passes through the upper screen 120 and the lower screen 140 between the upper screen frame 110, the middle screen frame 130 and the lower screen frame 150 in sequence, and the screened material falls on the lower screen frame 150. The discharge pipe 400 is located at the bottom of the screen frame structure 100. When the lower screen frame 150 vibrates, the screened material is smoothly discharged through the discharge pipe 400.

[0048] Compared with the prior art, the present disclosure has at least the following advantages:

[0049] 1. The above-mentioned positive electrode material screening device 10 separates the upper screen frame 110, the upper screen 120, the middle screen frame 130, the lower screen 140 and the lower screen frame 150 stacked in sequence through the elastic sealing ring 160, so that the mutual collision between the components of each layer of the screen frame structure 100 is reduced, and the wear between the components of each layer of the screen frame structure 100 is reduced, thereby avoiding the generation of metal chips and extending the service life of the positive electrode material screening device 10.

[0050] 2. By rotating the buckle assembly 330 to buckle the first buckle seat 310 and the second buckle seat 320 respectively, the upper screen frame 110, the middle screen frame 130 and the lower screen frame 150 are quickly fastened, which speeds up the installation speed of the upper screen frame 110, the middle screen frame 130 and the lower screen frame 150, increases the action force of each layer of the screen frame structure 100, and makes the sealing effect of the elastic sealing ring 160 better, avoiding material leakage.

[0051] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A positive electrode material screening device, characterized in that: It comprises a screen frame structure (100), a vibrating screen spring chassis (200) and a snap-fit ​​structure (300). The screen frame structure (100) comprises an upper screen frame (110), an upper screen (120), a middle screen frame (130), a lower screen (140), a lower screen frame (150) and a plurality of elastic sealing rings (160), wherein the upper screen (120) is arranged between the upper screen frame (110) and the middle screen frame (130), the lower screen (140) is arranged between the middle screen frame (130) and the lower screen frame (150), and the upper screen frame (110) and the upper screen (120) are connected to each other. 20), the elastic sealing ring (160) is provided between the upper screen (120) and the middle screen frame (130), the elastic sealing ring (160) is provided between the middle screen frame (130) and the lower screen (140), the elastic sealing ring (160) is provided between the lower screen (140) and the lower screen frame (150), and the vibrating screen spring chassis (200) is connected to the bottom of the lower screen frame (150); The buckle structure (300) includes a first buckle seat (310), a second buckle seat (320) and a rotating buckle assembly (330), wherein the first buckle seat (310) is installed on the upper screen frame (110), the second buckle seat (320) is installed on the lower screen frame (150), and the rotating buckle assembly (330) is installed on the middle screen frame (130), and the rotating buckle assembly (330) is buckled with the first buckle seat (310) and the second buckle seat (320) respectively.

2. The positive electrode material screening device according to claim 1, characterized in that: Each of the elastic sealing rings (160) has a positioning area (1601), the upper screen frame (110) is provided with a first protrusion (111), the bottom of the upper screen (120) is provided with a second protrusion (121), the bottom of the middle screen frame (130) is provided with a third protrusion (131), and the bottom of the lower screen (140) is provided with a fourth protrusion (141), the first protrusion (111), the second protrusion (121), the third protrusion (131) and the fourth protrusion (141) respectively correspond to the positioning area (1601) of the elastic sealing ring (160) below them and are connected to the positioning area (1601).

3. The positive electrode material screening device according to claim 2, characterized in that: The positioning area (1601) is provided with a positioning hole (1602), the top of the upper screen (120) is provided with a first positioning groove (1201), the first protrusion (111) is passed through the positioning hole (1602) and embedded in the first positioning groove (1201); the middle screen frame (130) is provided with a second positioning groove (1301), the second protrusion (121) is passed through the positioning hole (1602) and embedded in the first positioning groove (1201). The second positioning groove (1301); the lower screen (140) is provided with a third positioning groove (1401), the third protrusion (131) is passed through the positioning hole (1602) and embedded in the third positioning groove (1401); the lower screen frame (150) is provided with a fourth positioning groove (1501), the fourth protrusion (141) is passed through the positioning hole (1602) and embedded in the fourth positioning groove (1501).

4. The positive electrode material screening device according to claim 2, characterized in that: The positioning area (1601) is provided with a positioning groove (1603), at least a portion of the first protrusion (111) is accommodated in the corresponding positioning groove (1603), at least a portion of the second protrusion (121) is accommodated in the corresponding positioning groove (1603), at least a portion of the third protrusion (131) is accommodated in the corresponding positioning groove (1603), and at least a portion of the fourth protrusion (141) is accommodated in the corresponding positioning groove (1603).

5. The positive electrode material screening device according to claim 1, characterized in that: A first placement groove (1202) is respectively provided on one side of the upper screen (120) close to the upper screen frame (110) and on one side of the upper screen (120) close to the middle screen frame (130), and an elastic sealing ring (160) is sleeved on the outer wall of each first placement groove (1202). A second placement groove (1402) is respectively provided on one side of the lower screen (140) close to the middle screen frame (130) and on one side of the lower screen (140) close to the lower screen frame (150), and an elastic sealing ring (160) is sleeved on the outer wall of each second placement groove (1402).

6. The positive electrode material screening device according to claim 1, characterized in that: One side surface of the elastic sealing ring (160) is a planar structure, and the other side surface of the elastic sealing ring (160) is an inwardly concave arc surface structure.

7. The positive electrode material screening device according to claim 1, characterized in that: The rotating buckle assembly (330) includes a connecting base (331), a first rotating shaft (332), a first buckle plate (333), a second rotating shaft (334) and a second buckle plate (335), wherein the connecting base (331) is connected to the middle screen frame (130), the first rotating shaft (332) is rotatably arranged on the connecting base (331), one end of the first buckle plate (333) is fixedly connected to the first rotating shaft (332), the first buckle plate (333) is used to buckle the first buckle seat (310), the second rotating shaft (334) is rotatably arranged on the connecting base (331), one end of the second buckle plate (335) is fixedly connected to the second rotating shaft (334), and the second buckle plate (335) is used to buckle the second buckle seat (320).

8. The positive electrode material screening device according to claim 7, characterized in that: The buckle structure (300) also includes a first fixing buckle (340) and a second fixing buckle (350), one end of the first fixing buckle (340) is rotatably connected to the first buckle seat (310), the first buckle plate (333) is provided with a first fixing groove (3301), the first fixing groove (3301) is used to clamp the first fixing buckle (340), one end of the second fixing buckle (350) is rotatably connected to the second buckle seat (320), the second buckle plate (335) is provided with a second fixing groove (3302), the second fixing groove (3302) is used to clamp the second fixing buckle (350).

9. The positive electrode material screening device according to claim 7, characterized in that: The first buckle plate (333), the first buckle seat (310), the second buckle plate (335) and the second buckle seat (320) are all provided with a plurality of convex teeth, the plurality of convex teeth of the first buckle plate (333) are engaged with the plurality of convex teeth of the first buckle seat (310), and the plurality of convex teeth of the second buckle plate (335) are engaged with the plurality of convex teeth of the second buckle seat (320).

10. The positive electrode material screening device according to claim 1, characterized in that: The positive electrode material screening device further comprises a discharge pipe (400), wherein the discharge pipe (400) is connected to the lower screen frame (150).

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