A screening device for aqueous battery production materials

Abstract

The invention discloses a screening device for aqueous battery production materials, which mainly comprises: a coarse material discharge port, a shell, a grinding component, a material dividing component, and a feeding device; the material dividing component is composed of a plurality of screening mesh plates; the screening mesh plates mainly comprise an upper screen layer, a lower screen layer, an auxiliary screening material guiding component, and a tensioning structure; a plurality of auxiliary screening material guiding components which are wider at the top and narrower at the bottom are arranged on the upper surface of the lower screen layer; sieve holes are arranged on the top surface of the auxiliary screening material guiding component; a gradually expanding space portion with a gradually increasing cross-sectional area from top to bottom is formed between the side walls of two adjacent auxiliary screening material guiding components; more materials are facilitated to be discharged along the upper surface of the auxiliary screening material guiding component, thereby reducing material accumulation and blockage.

Description

Technical Field

[0001] The invention relates to the technical field of material processing, and in particular to a screening device for aqueous battery production materials. Background Art

[0002] Aqueous batteries are a type of battery technology that uses water as an electrolyte medium. They have received extensive attention in recent years due to their advantages such as high safety, excellent environmental performance and low production costs. In the production process of aqueous batteries, the processing of production materials such as zinc powder, carbon materials and conductive agents is crucial. These materials need to be screened to ensure that the particle size of the materials meets the production requirements and to achieve the uniformity of aqueous battery production materials, thereby improving the quality stability and overall performance of the battery.

[0003] Common screening equipment includes screen frames, screening media, drive devices and other components. Among them, screens, screen plates and the like are the most important screening media in screening equipment. They directly contact and process materials, and determine the screening effect and accuracy. Existing screens are usually set at an angle. If the inclination of the screen is not enough, some larger particles will increase the friction with the screen surface due to their irregular shape, causing them to remain on the screen and block the screen holes. On the other hand, if the screen is overly tilted, the opening sizes of the mesh at different positions will be inconsistent, forming irregular mesh holes, which will affect the screening accuracy. Moreover, after long-term use, the inconsistency of the screen openings will also cause uneven stress on the screen, increasing the risk of wear or damage to the screen.

[0004] Some existing technologies have made some changes to the above-mentioned problems, but there are still some disadvantages. For example, Korean patent KR102582107B1 discloses a device for separating foreign matter from recovered sand and gravel. The device is arranged vertically on the upper side of a sorting line with a vertical rack, and a guide wall is constructed at a certain interval and a predetermined height parallel to the moving direction of the foreign matter, so that a rod-shaped foreign matter with a predetermined length is placed vertically to the sorting line, and will not fall on the sorting window, but will move along the guide wall to the bottom of the aggregate sorting section and be discharged; but the guide wall component of the patent has a simple structure and has certain disadvantages: if the distance between two adjacent guide wall components is large, some particles smaller than the distance will fall on the surface of the screen, resulting in reduced screening accuracy; and the distance between two adjacent guide wall components is small, so that the number of guide wall components increases, which reduces the contact area between the particles to be screened and the surface of the screen, and reduces the screening efficiency.

[0005] In addition, before screening, it is usually necessary to mix multiple raw materials in a certain proportion; these raw materials are often placed directly in the same container and evenly mixed by stirring and other methods, and finally discharged in a certain amount. However, due to the different volumes and densities of different raw materials, they have different flow rates during the mixing process. Materials with larger volumes and lower densities have faster flow rates, while materials with smaller volumes and higher densities have slower flow rates. Therefore, when the materials are finally discharged, the problem of uneven discharge will still occur. Summary of the invention

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A screening device for aqueous battery production materials, mainly comprising: a coarse material discharge port, a shell, and a grinding component, a material distribution component with an auxiliary screening material guide component, and a feeding device arranged in sequence from bottom to top inside the shell;

[0008] Furthermore, the feeding device includes a plurality of independent, detachable sub-hopper assemblies; each sub-hopper assembly is provided with a first flow control plate and a second flow control plate;

[0009] Furthermore, the material distribution assembly is composed of a plurality of screening mesh plates which are arranged in parallel, have an inclined angle and have the same structure; the screening mesh plates mainly include: an upper screening layer, a lower screening layer, an auxiliary screening guide component, and a tensioning structure;

[0010] Furthermore, a plurality of auxiliary screening material guiding components are provided on the upper surface of the lower screening layer; the plurality of auxiliary screening material guiding components are arranged in parallel with the screen line of the upper screening layer;

[0011] Furthermore, the auxiliary screening and material guiding component is a long strip-shaped structure;

[0012] Furthermore, the cross-sectional shape of the auxiliary screening material guiding component is a hollow trapezoid that is wide at the top and narrow at the bottom;

[0013] Furthermore, the bottom of the auxiliary screening material guiding component is provided with an auxiliary screening material guiding component opening, and the top surface thereof is provided with a sieve hole;

[0014] Furthermore, a gradually expanding space portion with a gradually increasing cross-sectional area from top to bottom is formed between the side walls of two adjacent auxiliary screening and material guiding components;

[0015] Furthermore, the width of the top of the gradually expanding space portion is H1; the width of the bottom of the gradually expanding space portion is H2; H1 <H2;

[0016] Furthermore, the sieve lines of the upper sieve layer and the sieve lines of the lower sieve layer form a grid structure with a plurality of sieve openings.

[0017] Furthermore, a tensioning hole is provided on the tensioning structure, and a plurality of screen wires pass through the tensioning hole and are connected to the tensioning structure;

[0018] Further, a plurality of tensioning structural members are arranged in the fixed portion of the inner wall of the shell;

[0019] Furthermore, the inner wall of the shell includes two left and right side walls, namely the first side wall and the second side wall, and also includes two front and rear side walls, namely the third side wall and the fourth side wall;

[0020] Furthermore, the two fixing parts connected to the screen wires on the upper screening layer are respectively arranged on the first side wall and the second side wall; the fixing parts connected to the screen wires on the lower screening layer are respectively arranged on the third side wall and the fourth side wall;

[0021] Furthermore, the two fixing portions on the first side wall and the second side wall are not at the same height, so that the tensioning structural members arranged in the fixing portions are also not at the same height;

[0022] Furthermore, a coarse material discharge port is provided on the end of the first side wall close to the screening mesh plate.

[0023] Furthermore, two fixing parts connected to the screen wires on the upper screening layer are also provided with a plurality of slots for clamping a plurality of auxiliary screening material guiding components.

[0024] Furthermore, the material of the multiple screen wires on the upper screening layer and the lower screening layer is any one of metal wire, rubber, nylon rope and polyester rope.

[0025] Further, the material distribution hopper assembly mainly includes: a top opening, a raised portion, a first material outlet, a second material outlet, a first inclined side wall, a second inclined side wall, a first vertical side wall, a second vertical side wall, a first flow control plate, and a second flow control plate;

[0026] Furthermore, the material distribution hopper assembly is in an inverted trapezoidal shape as a whole;

[0027] Furthermore, a first flow control plate and a second flow control plate are symmetrically arranged between the first vertical side wall and the second vertical side wall;

[0028] Furthermore, the first flow control plate and the second flow control plate have the same structure and size; the first flow control plate is rectangular and attached to the material distribution hopper assembly;

[0029] Furthermore, the first material outlet and the second material outlet are respectively located at the left and right ends of the bottom of the material distribution hopper assembly; the top opening is the feed inlet;

[0030] Furthermore, a protrusion is provided on the inner surface of the bottom of the distribution hopper assembly;

[0031] Further, the cross-sectional shape of the raised portion is a triangle, and its height is H3;

[0032] Furthermore, the height of the sub-hopper assembly is H4; H3=(1 / 3~1 / 2)H4.

[0033] Furthermore, the grinding assembly mainly includes: from top to bottom, a first grinding wheel set, a first collecting plate, a second grinding wheel set, and a second collecting plate are arranged in sequence;

[0034] Furthermore, the first grinding wheel set includes two rough grinding wheels with the same structure and arranged on the same plane;

[0035] Furthermore, the second grinding wheel set also includes two fine grinding wheels arranged on the same plane and having the same structure;

[0036] Furthermore, a first collecting plate is detachably provided on the lower side of the first grinding wheel assembly;

[0037] Furthermore, a second collecting plate is detachably provided on the lower side of the second grinding wheel assembly.

[0038] Further, the outer peripheral surface of the rough grinding wheel is uniformly distributed with raised rough grinding racks;

[0039] Further, the outer peripheral surface of the fine grinding wheel is uniformly distributed with raised fine grinding racks;

[0040] Furthermore, the width of the coarse grinding rack is greater than that of the fine grinding rack; and the gap between two adjacent coarse grinding racks is greater than the gap between two adjacent fine grinding racks.

[0041] Furthermore, a driving motor is provided on the outside of the shell near the grinding assembly; and a plurality of supporting legs are evenly arranged on the bottom of the shell.

[0042] The beneficial effects of the present invention are as follows:

[0043] The present invention provides a screening device for aqueous battery production materials. The structure of the screening mesh is improved, that is, an auxiliary screening material guide component with a hollow trapezoidal cross section that is wide at the top and narrow at the bottom is arranged on the screening mesh. Compared with the guide wall with a single structure in the prior art, the auxiliary screening material guide component of the present application has an increased contact area with irregular large particles and long rod-shaped foreign matter, providing more contact points for the material, and promoting more material to be discharged along the upper surface of the auxiliary screening material guide component.

[0044] A gradually expanding space portion with a gradually increasing cross-sectional area from top to bottom is formed between the side walls of two adjacent auxiliary screening and material guiding components; the top of the gradually expanding space portion is narrow, which limits the flow rate of the material. As the cross-sectional area gradually increases, the flow rate of the material also gradually increases, allowing more material to pass through the gradually expanding space portion at a faster flow rate, reducing material accumulation and blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure of the screening device of the present invention.

[0046] Figure 2 It is a schematic diagram of the structure of the screening mesh plate of the material separation component.

[0047] Figure 3 It is a schematic diagram of the side structure of the screening mesh plate.

[0048] Figure 4 It is a structural schematic diagram of the fixed part.

[0049] Figure 5 This is a schematic diagram of the overall structure of one of the distribution hopper components.

[0050] Figure 6 Schematic diagram of the internal structure of one of the distribution hopper components.

[0051] Figure 7 This is a diagram illustrating that the first flow control plate allows the minimum material discharge flow rate.

[0052] Figure 8 This is a diagram illustrating the rotation of the flow control plate and the change in the material discharge flow rate.

[0053] Fig. 9 for Figure 6 Section view taken along section line AA.

[0054] In the figure: 1, feeding device; 11, material distribution hopper assembly; 111, top opening; 112, raised portion; 1121, first inclined surface; 1122, second inclined surface; 113, first material outlet; 113', second material outlet; 114, first inclined side wall; 114', second inclined side wall; 115, first vertical side wall; 115', second vertical side wall; 12, first flow control plate; 12', second flow control plate; 122, rotating pin; 2, material distribution assembly; 21, screening mesh plate; 211, upper screening layer; 212, lower screening layer; 213, auxiliary screening guide Component; 2131, sieve hole; 2132, gradually expanding space portion; 2133, top surface; 2134, auxiliary screening guide component opening; 214, tensioning structure; 2141, tensioning hole; 215, screening port; 3, grinding assembly; 31, first grinding wheel group; 311, coarse grinding wheel; 3111, coarse grinding rack; 32, first collecting plate; 33, second grinding wheel group; 331, fine grinding wheel; 3311, fine grinding rack; 34, second collecting plate; 4, shell; 41, fixing portion; 411, slot; 42, first side wall; 43, second side wall; 5, coarse material discharge port. DETAILED DESCRIPTION

[0055] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0056] Please see attached Figure 1-9 , a screening device for aqueous battery production materials, mainly comprising: a coarse material discharge port 5, a shell 4, a grinding assembly 3, a material dividing assembly 2 with an auxiliary screening material guide component 213, and a feeding device 1 arranged in sequence from bottom to top inside the shell 4;

[0057] The feeding device 1 comprises a plurality of independent and detachable material distribution hopper components 11; each material distribution hopper component is provided with a first flow control plate 12 and a second flow control plate 12';

[0058] The material distribution assembly 2 is composed of a plurality of screening mesh plates 21 which are arranged in parallel, have an inclined angle and have the same structure; the screening mesh plates 21 mainly include: an upper screening layer 211, a lower screening layer 212, an auxiliary screening material guide component 213, and a tensioning structure 214;

[0059] The upper surface of the lower screening layer 212 is provided with a plurality of auxiliary screening material guiding components 213; the plurality of auxiliary screening material guiding components 213 are arranged in parallel with the screen line of the upper screening layer 211;

[0060] As attached Figure 2 As shown, the auxiliary screening material guiding component 213 is a long strip structure;

[0061] The cross-sectional shape of the auxiliary screening material guiding component 213 is a hollow trapezoid that is wide at the top and narrow at the bottom;

[0062] The auxiliary screening material guiding component 213 has an auxiliary screening material guiding component opening 2134 at the bottom thereof, and a sieve hole 2131 at the top surface 2133 thereof;

[0063] The mesh holes 2131 allow the particles falling on the top surface 2133 to pass through the mesh holes 2131 and fall downward to the opening 2134 of the auxiliary screening guide component;

[0064] As attached Figure 3 As shown, a gradually expanding space portion 2132 with a gradually increasing cross-sectional area from top to bottom is formed between the side walls of two adjacent auxiliary screening and material guiding components 213;

[0065] The width of the top of the gradually expanding space portion 2132 is H1; the width of the bottom of the gradually expanding space portion 2132 is H2; H1 <H2;

[0066] The upper screening layer 211 is formed by connecting a plurality of screen wires that are arranged transversely and parallel to each other, and tensioning structural members 214 at both ends of the screen wires;

[0067] The lower screening layer 212 is formed by connecting a plurality of vertically arranged and mutually parallel screening wires and tensioning structural members 214 at both ends of the screening wires;

[0068] The sieve lines of the upper sieve layer 211 and the sieve lines of the lower sieve layer 212 are perpendicular to each other and fit each other; that is, the sieve lines of the upper sieve layer 211 and the sieve lines of the lower sieve layer 212 form a grid structure with a plurality of sieve openings 215;

[0069] The top of the gradually expanding space 2132 is narrow, which limits the flow rate of the material, so that it enters the gradually expanding space 2132 at a relatively slow speed; as the material falls downward, the area of ​​the gradually expanding space 2132 gradually increases, and the flow rate of the material also gradually increases, so that more material passes through the gradually expanding space 2132 at a faster flow rate and is screened out from the screening port 215, thereby reducing the accumulation and blockage of the material at the bottom of the gradually expanding space 2132;

[0070] As attached Figure 3 As shown, through the above structure, compared with the single guide wall in the prior art, the contact area between the auxiliary screening material guide component 213 of the present application and the irregular large particles and long rod-shaped foreign objects is increased, providing more contact points for the material, thereby improving the guiding effect of the material on the auxiliary screening material guide component 213, and prompting more materials to be discharged along the inclined auxiliary screening material guide component 213 through the coarse material discharge port 5, and the discharged coarse materials are collected in an external collection box; as shown in the attached Figure 1As shown, arrows M and N show the direction of coarse material discharge;

[0071] When the long rod-shaped foreign matter falls downward in a vertical manner, it passes through the gradually expanding space portion 2132 and falls to the bottom of the gradually expanding space portion 2132. Under the guidance of the inclined direction of the side wall of the auxiliary screening guide member 213, its direction is adjusted and it is discharged along the bottom surface of the gradually expanding space portion 2132 without passing through the screening port 215.

[0072] A tensioning hole 2141 is provided on the tensioning structure 214, and multiple screen wires pass through the tensioning hole 2141 and are connected to the tensioning structure 214. When one or more screen wires become loose, broken, or have other problems after long-term use, the screen wires to be replaced or adjusted can be processed separately without replacing the entire screen plate;

[0073] A plurality of tensioning structural members 214 are disposed in the fixing portion 41 of the inner wall of the housing 4; the inner wall of the housing 4 includes two left and right side walls, namely, a first side wall 42 and a second side wall 43, and also includes two front and rear side walls, namely, a third side wall and a fourth side wall;

[0074] The fixing parts 41 connected to the screen wires on the upper screening layer 211 are respectively arranged on the first side wall 42 and the second side wall 43;

[0075] The fixing parts 41 connected to the screen wires on the lower screening layer 212 are respectively arranged on the third side wall and the fourth side wall;

[0076] The two fixing portions 41 on the first side wall 42 and the second side wall 43 are not at the same height, so that the tensioning structure 214 disposed in the fixing portion 41 is also not at the same height;

[0077] The sieve wires on the upper sieve layer 211 pass through the through holes on the fixing part 41, the tensioning holes 2141 and are connected to the tensioning structure 214 to form an inclined upper sieve layer 211; Figure 2 It can be seen that;

[0078] The tensioning structure 214 connected to the lower screening layer 212 is arranged on the third side wall and the fourth side wall of the housing 4, and the arrangement method of connecting the two fixing parts 41 is the same as the arrangement method of the upper screening layer 211;

[0079] Furthermore, a coarse material discharge port 5 is provided on the end of the first side wall 42 close to the screening mesh plate 21;

[0080] In order to facilitate the operation of the tensioning structure 214 in the fixing portion 41, a detachable maintenance window may be further provided on the housing 4 near the fixing portion 41;

[0081] The two fixing parts 41 connected to the screen wires on the upper screening layer 211 are also provided with a plurality of slots 411 for clamping a plurality of auxiliary screening material guide components 213; when screening materials, the number of the auxiliary screening material guide components 213 is adjusted according to the particle size of the material to be removed according to a predetermined size. For example, if the particles of the material to be filtered are relatively large, a plurality of auxiliary screening material guide components 213 can be removed in sequence;

[0082] The material of the multiple screen wires on the upper screening layer 211 and the lower screening layer 212 is any one of metal wire, rubber, nylon rope and polyester rope.

[0083] Furthermore, a feeding device 1 including a material distribution hopper assembly 11 is provided on the upper side of the screening mesh plate 21; the material distribution hopper assembly 11 is used to store and transport materials of different types or sizes;

[0084] The material distribution hopper assembly 11 mainly includes: a top opening 111, a protruding portion 112, a first material outlet 113, a second material outlet 113', a first inclined side wall 114, a second inclined side wall 114', a first vertical side wall 115, a second vertical side wall 115', a first flow control plate 12, and a second flow control plate 12';

[0085] The material distribution hopper assembly 11 is in an inverted trapezoidal shape as a whole;

[0086] The first inclined side wall 114 and the second inclined side wall 114' are the left and right side walls of the material distribution hopper assembly 11, so that the material distribution hopper assembly 11 gradually narrows from the top to the bottom;

[0087] The first vertical side wall 115 and the second vertical side wall 115' are the front and rear side walls of the material distribution hopper assembly 11;

[0088] The first material outlet 113 and the second material outlet 113' are respectively located at the left and right ends of the bottom of the material distribution hopper assembly 11;

[0089] The top opening 111 is the feed inlet;

[0090] A protrusion 112 is provided on the inner surface of the bottom of the distribution hopper assembly 11;

[0091] The raised portion 112 starts from the bottom of the material distribution hopper assembly 11 and is disposed close to the first vertical side wall 115 and the second vertical side wall 115';

[0092] The cross-section of the protrusion 112 is triangular, and the protrusion 112 has a first inclined surface 1121 and a second inclined surface 1122 ; and the first inclined surface 1121 and the second inclined surface 1122 are contracted inwardly toward the top opening 111 ;

[0093] Furthermore, the protrusion 112 is integrally formed with the material distribution hopper assembly 11;

[0094] Further, as attached Fig. 9 As shown, the height of the protrusion 112 is H3, the height of the material distribution hopper assembly 11 is H4, and H3=(1 / 3~1 / 2)H4;

[0095] The protrusion 112 guides the material in the material distribution hopper assembly 11 to flow to the first material outlet 113 and the second material outlet 113' at a faster speed, further reducing the accumulation of materials at the bottom of the material distribution hopper assembly 11;

[0096] Furthermore, in the material distribution hopper assembly 11, a first flow control plate 12 and a second flow control plate 12' are symmetrically provided between the first vertical side wall 115 and the second vertical side wall 115';

[0097] Furthermore, the first flow control plate 12 and the second flow control plate 12' have the same structure and size;

[0098] As attached Fig. 9 As shown, the first flow control plate 12 is rectangular and attached to the distribution hopper assembly 11; so that the inclination angle of the first flow control plate 12 can be adjusted; the adjustable inclination angle and its fixation are prior arts, and specific references may be made to patents CN117212646A and CN111112400B.

[0099] The first flow control plate 12 is connected to the first vertical side wall 115 and the second vertical side wall 115' respectively through a rotating pin 122; the rotating pin 122 is rotatably connected to the first flow control plate 12;

[0100] As attached Figure 7 , Attachment Figure 8 As shown, the first flow control plate 12 rotates around the rotating pin 122, and the angle θ between the first flow control plate 12 and the horizontal plane Q gradually decreases, the flow rate of the material gradually increases, and the amount of material discharged also gradually increases;

[0101] Further, as attached Figure 7 As shown, when the first flow control plate 12 and the first inclined surface 1121 of the protruding portion 112 are almost at a right angle, the first flow control plate 12 allows the material to be discharged at a minimum flow rate, and the flow rate of the material is the slowest;

[0102] When multiple materials are mixed, the inclination angles of the first flow control plate 12 and the second flow control plate 12' in each sub-hopper assembly 11 can be pre-set according to the proportion requirements, so that different materials in each sub-hopper assembly 11 flow out of the first material outlet 113 and the second material outlet 113' at a predetermined speed, effectively adjusting the proportion of the materials to be mixed and ensuring that they are reasonably distributed to meet the required intake;

[0103] Furthermore, in practical applications, in order to improve the sealing between the first flow control plate 12 and the first vertical side wall 115 and the second vertical side wall 115 ′, brushes, sealing strips, etc. may be provided on both sides of the first flow control plate 12 in the width direction.

[0104] Furthermore, the grinding assembly 3 mainly includes: a first grinding wheel set 31, a first collecting plate 32, a second grinding wheel set 33, and a second collecting plate 34 are sequentially arranged from top to bottom;

[0105] The first grinding wheel set 31 includes two rough grinding wheels 311 with the same structure and arranged on the same plane;

[0106] The second grinding wheel set 33 also has two fine grinding wheels 331 with the same structure and arranged on the same plane;

[0107] The outer peripheral surface of the rough grinding wheel 311 is evenly distributed with protruding rough grinding racks 3111; the rough grinding racks 3111 are spirally distributed on the outer surface of the rough grinding wheel 311;

[0108] The outer peripheral surface of the fine grinding wheel 331 is evenly distributed with raised fine grinding racks 3311; the fine grinding racks 3311 are also spirally distributed on the outer surface of the fine grinding wheel 331;

[0109] Furthermore, the width of the coarse grinding rack 3111 is greater than the width of the fine grinding rack 3311; and the gap between two adjacent coarse grinding racks 3111 is greater than the gap between two adjacent fine grinding racks 3311;

[0110] Furthermore, a first collecting plate 32 is detachably provided on the lower side of the first grinding wheel assembly 31, and is used to collect the preliminarily ground material;

[0111] A second collecting plate 34 is detachably provided on the lower side of the second grinding wheel set 33 , and is used to collect fine materials ground by the second grinding wheel set 33 .

[0112] Furthermore, a driving motor is provided outside the housing 4 near the grinding assembly 3. It is prior art to select a suitable motor controller according to the motor type and application requirements, and it is not an improvement point of the present application, so it will not be described in detail.

[0113] A plurality of supporting legs are evenly arranged on the bottom of the housing 4 .

[0114] Specific working method: according to the different masses of materials to be mixed, firstly adjust the first flow control plate 12 and the second flow control plate 12' in the multiple sub-hopper assemblies 11 to different inclination angles, then pour the materials of different masses into the corresponding sub-hopper assemblies 11, and the protrusion 112 guides the materials to flow to the first material outlet 113 and the second material outlet 113', and then falls on the screening mesh plate 21; irregular large particles and long rod-shaped foreign matter are discharged through the coarse material outlet 5 along the inclined auxiliary screening guide component 213; and other particles that are not discharged are screened through the sieve hole 2131 and then fall down to the next screening mesh plate 21 for further screening; according to actual needs, the screening mesh plate 21 can be one or more;

[0115] After the sieving is completed, the material falls to the first grinding wheel set 31 for preliminary grinding. If only the first grinding wheel set 31 is needed for preliminary grinding, the first collecting plate 32 can be directly inserted to the lower side of the first grinding wheel set 31 to receive the material that falls after grinding;

[0116] If the material needs to be further finely ground, the first collecting plate 32 is removed, and the material ground by the first grinding wheel set 31 can directly fall into the second grinding wheel set 33 for finer grinding; finally, the sieved and ground material falls into the second collecting plate 34.

[0117] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A screening device for aqueous battery production materials, mainly comprising: A coarse material discharge port (5), a housing (4), and a grinding assembly (3), a material distribution assembly (2) having an auxiliary screening and material guiding component (213), and a feeding device (1) are sequentially arranged inside the housing (4) from bottom to top; the characteristics are: The feeding device (1) comprises a plurality of independent, detachable material distribution hopper components (11); each material distribution hopper component (11) is provided with a first flow control plate (12) and a second flow control plate (12'); The material distribution assembly (2) is composed of a plurality of screening mesh plates (21) which are arranged in parallel, have an inclined angle and have the same structure; the screening mesh plates (21) mainly include: an upper screening layer (211), a lower screening layer (212), an auxiliary screening material guide component (213), and a tensioning structure (214); The upper surface of the lower screening layer (212) is provided with a plurality of auxiliary screening material guiding components (213); the plurality of auxiliary screening material guiding components (213) are arranged in parallel with the screen lines of the upper screening layer (211); The auxiliary screening material guiding component (213) is a long strip-shaped structure; and the auxiliary screening material guiding component (213) is inclined toward the coarse material discharge port (5); The cross-sectional shape of the auxiliary screening material guiding component (213) is a hollow trapezoid that is wide at the top and narrow at the bottom; an auxiliary screening material guiding component opening (2134) is provided at the bottom of the auxiliary screening material guiding component (213), and a sieve hole (2131) is provided on the top surface (2133); a gradually expanding space portion (2132) whose cross-sectional area gradually increases from top to bottom is formed between the side walls of two adjacent auxiliary screening material guiding components (213); The width of the top of the gradually expanding space portion (2132) is H1; the width of the bottom of the gradually expanding space portion (2132) is H2; H1 <H2; The sieve lines of the upper sieve layer (211) and the sieve lines of the lower sieve layer (212) form a grid-like structure having a plurality of sieve openings (215).

2. The screening device for aqueous battery production materials according to claim 1, characterized in that: The material distribution hopper assembly (11) mainly comprises: a top opening (111), a protruding portion (112), a first material outlet (113), a second material outlet (113'), a first inclined side wall (114), a second inclined side wall (114'), a first vertical side wall (115), a second vertical side wall (115'), a first flow control plate (12), and a second flow control plate (12'); The material distribution hopper assembly (11) is in an overall inverted trapezoidal shape; A first flow control plate (12) and a second flow control plate (12') are symmetrically provided between the first vertical side wall (115) and the second vertical side wall (115'); The first flow control plate (12) and the second flow control plate (12') have the same structure and size; the first flow control plate (12) is rectangular and is attached to the material distribution hopper assembly (11); The first material outlet (113) and the second material outlet (113') are respectively located at the bottom of the first inclined side wall (114) and the second inclined side wall (114'); the top opening (111) is the feed port; A protrusion (112) is provided on the inner surface of the bottom of the distribution hopper assembly (11); The cross-sectional shape of the protrusion (112) is a triangle, and its height is H3; The height of the material distribution hopper assembly (11) is H4; H3=(1 / 3~1 / 2)H4.

3. The screening device for aqueous battery production materials according to claim 2, characterized in that: The tensioning structure (214) is provided with a tensioning hole (2141), and a plurality of screen wires pass through the tensioning hole (2141) and are connected to the tensioning structure (214); The plurality of tensioning structural members (214) are arranged in a fixing portion (41) of an inner wall of the housing (4); The inner wall of the shell (4) comprises two left and right side walls, namely a first side wall (42) and a second side wall (43), and also comprises two front and rear side walls, namely a third side wall and a fourth side wall; The two fixing parts (41) connected to the screen wires on the upper screening layer (211) are respectively arranged on the first side wall (42) and the second side wall (43); the fixing parts (41) connected to the screen wires on the lower screening layer (212) are respectively arranged on the third side wall and the fourth side wall; The two fixing portions (41) on the first side wall (42) and the second side wall (43) are not at the same height, so that the tensioning structure (214) arranged in the fixing portion (41) is also not at the same height; A coarse material discharge port (5) is also provided on the end of the first side wall (42) close to the screening mesh plate (21).

4. The screening device for aqueous battery production materials according to claim 3, characterized in that: The two fixing parts (41) connected to the screen wires on the upper screening layer (211) are also provided with a plurality of slots (411) for clamping a plurality of auxiliary screening material guiding components (213).

5. The screening device for aqueous battery production materials according to claim 4, characterized in that: The material of the multiple screen wires on the upper screening layer (211) and the lower screening layer (212) is any one of metal wire, rubber, nylon rope, and polyester rope.

6. The screening device for aqueous battery production materials according to claim 5, characterized in that: The grinding assembly (3) mainly comprises: a first grinding wheel set (31), a first collecting plate (32), a second grinding wheel set (33), and a second collecting plate (34) arranged in sequence from top to bottom; The first grinding wheel set (31) comprises two rough grinding wheels (311) arranged on the same plane and having the same structure; The second grinding wheel set (33) also includes two fine grinding wheels (331) arranged on the same plane and having the same structure; A first collecting plate (32) is detachably provided on the lower side of the first grinding wheel assembly (31); A second collecting plate (34) is detachably provided on the lower side of the second grinding wheel set (33).

7. The screening device for aqueous battery production materials according to claim 6, characterized in that: The outer peripheral surface of the rough grinding wheel (311) is evenly distributed with protruding rough grinding racks (3111); The outer peripheral surface of the fine grinding wheel (331) is evenly distributed with raised fine grinding racks (3311); The width of the coarse grinding rack (3111) is greater than that of the fine grinding rack (3311); and the gap between two adjacent coarse grinding racks (3111) is greater than the gap between two adjacent fine grinding racks (3311).

8. The screening device for aqueous battery production materials according to claim 7, characterized in that: A driving motor is provided on the outside of the shell (4) near the grinding assembly (3); and a plurality of supporting legs are evenly arranged on the bottom of the shell (4).

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