Chemical coating screening machine

Abstract

The utility model discloses a chemical coating screening machine, including screening jar, lid, positioning piece, sieve plate and splitter, the splitter is parallelly arranged above the sieve plate, and its lower end is equipped with the cooperation department of being inserted or jointed with the positioning piece, and a plurality of through blanking hole is evenly arranged on the splitter, and the upper surface of splitter is equipped with the fixed column for being hung with the lug hook connection, after assembling, the splitter realizes radial positioning through the cooperation department and positioning piece, and realizes axial compression fixed through the circumferential compression of lid, and the lug can be hung on the fixed column, realizes the relative fixation of sieve plate and splitter, when screening operation, material is dispersed blanking through the blanking hole of splitter in turn, and then is screened through sieve plate, the utility model discloses the splitter with the blanking hole of even distribution is arranged in parallel above the sieve plate, so that the material is first dispersed into multiple uniform streams through multiple blanking holes and then falls to the sieve plate. The structure effectively avoids the local impact and load concentration caused by the accumulation of material in the central area of the sieve plate, so that the material is more evenly distributed on the sieve surface.

Description

Technical Field

[0001] This utility model particularly relates to a chemical coating screening machine. Background Technology

[0002] In the production process of chemical coatings, screening of raw materials and finished products is one of the key steps to ensure product quality. The purpose of screening is to remove lumps and impurities from raw materials, or to classify the particle size of finished products to ensure the uniformity and application performance of the coating. In practical applications, existing screening equipment still has several shortcomings: First, materials are often poured directly into the central area of ​​the screen, which can easily cause material accumulation and excessive local load on the screen, affecting screening efficiency and potentially damaging the screen due to excessive impact; second, during the screening process, especially when processing highly viscous coating intermediates, materials are prone to clogging the screen holes, and the equipment lacks effective anti-clogging or dispersion structures, requiring frequent shutdowns for cleaning. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a chemical coating screening machine.

[0004] A chemical coating screening machine includes a screening tank, a cover, a positioning component, a screen plate, and a diverting plate. The screening tank has an opening at the top, forming a screening chamber inside. The cover is detachably installed at the opening of the screening tank and locked in place by a snap-fit ​​structure between its outer edge and the outer edge of the screening tank. The positioning component is fixedly installed at the upper end of the screening tank. The screen plate is horizontally positioned within the screening chamber and is connected to at least one hanging lug. The diverting plate is positioned parallel to the screen plate above it, and its lower end is provided with a mounting bracket that connects to the positioning component. The dividing plate has a mating part that allows for insertion or snap-fitting of the components. Multiple through-holes are evenly distributed on the dividing plate, and a fixing post is provided on the upper surface of the dividing plate for hooking with the hanging ear. After assembly, the dividing plate is radially positioned with the positioning component through the mating part, and axially pressed and fixed by the cover pressing its periphery. The hanging ear can be hooked onto the fixing post to achieve relative fixation between the screen plate and the dividing plate. During screening, the material is dispersed and falls through the discharge holes of the dividing plate in sequence, and then screened through the screen plate.

[0005] Preferably, a snap-fit ​​groove is provided circumferentially on the inner sidewall of the screening tank, and the outer edge of the screen plate is snapped into the snap-fit ​​groove.

[0006] Preferably, the mating part is at least one radially outwardly extending insert block provided on the lower surface of the flow divider plate, and the positioning element is an axially extending slot corresponding to the upper end of the screening tank. The bottom of the slot is formed with a lower limiting tooth, and the end of the insert block is formed with an upper limiting tooth that meshes with the lower limiting tooth. When the insert block is inserted into the slot, the upper limiting tooth meshes with the lower limiting tooth to restrict the circumferential rotation of the flow divider plate.

[0007] Preferably, the buckle structure includes a mounting base fixed to the outer surface of the screening tank, a lever rotatably mounted on the mounting base via a rotating shaft, a clamping part connected to the lever, and a torsion spring installed between the lever and the mounting base; the torsion spring is used to keep the clamping part pressing the cover; when the lever is turned, it rotates relative to the mounting base against the force of the torsion spring, causing the clamping part to move away from the cover to unlock; after the lever is released, the clamping part resets and presses the cover again under the action of the torsion spring.

[0008] Preferably, the pressing part has an arc-shaped structure, and its arc surface is adapted to the outer periphery of the cover.

[0009] Preferably, the pressing part and the lever are integrally formed.

[0010] Preferably, the fixing post is threaded with an anti-detachment cap, which is used to fix the hanging ear to the distributor plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a diversion plate with evenly distributed material drop holes arranged parallel above the screen plate. This allows the input material to be dispersed into multiple uniform streams through these holes before falling onto the screen plate. This structure effectively avoids localized impact and load concentration caused by material accumulation in the central area of ​​the screen plate, resulting in a more uniform material distribution on the screen surface. Furthermore, the radial positioning of the positioning components and mating parts, the axial fixing of the cover body, and the hook connection between the hanging ears and the fixing column enable quick and reliable detachable fixing between the screen plate and the diversion plate. This structure ensures the overall stability of the screening assembly during operation and allows for easy individual disassembly of both the screen plate and the diversion plate, facilitating cleaning, replacement, and maintenance, significantly reducing the difficulty and time cost of equipment maintenance. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1This is a schematic diagram of the structure of a chemical coating screening machine according to this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a chemical coating screening machine according to this application. Figure 2 . Detailed Implementation

[0014] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0015] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0016] The “connection” described in the specification and the “connection” relationship between the components shown in the accompanying drawings can be understood as a fixed connection, a detachable connection, or a connection that forms an integral unit; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and can derive different implementation methods such as screwing, riveting, welding, snap-fitting, or embedding to suitably replace the connection.

[0017] The directional terms such as up, down, left, right, top, and bottom mentioned in the instruction manual and the directions shown in the attached drawings indicate that the components can directly contact each other or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0018] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, casting, wire cutting, laser cutting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0019] A chemical coating screening machine includes a screening tank 1, a cover 2, a positioning element 3, a screen plate 4, and a diverting plate 5. The screening tank 1 has an opening at the top, forming a screening chamber 6 inside. The cover 2 is detachably installed at the opening of the screening tank 1 and is locked in place by a snap-fit ​​structure between its outer edge and the outer edge of the screening tank 1. The positioning element 3 is fixedly installed at the upper end of the screening tank 1. The screen plate 4 is horizontally arranged in the screening chamber 6 and is connected to at least one hanging lug 7. The diverting plate 5 is arranged parallel to the screen plate 4 above it, and its lower end is provided with a connection to the positioning element. The three-phase plug-in or snap-fit ​​mating parts 8, the diversion plate 5 is evenly provided with multiple through-holes 9, and the upper surface of the diversion plate 5 is provided with a fixing post 10 for hooking and connecting with the hanging ear 7; after assembly, the diversion plate 5 is radially positioned with the positioning part 3 through the mating part 8, and axially pressed and fixed by the cover body 2 pressing its periphery, and the hanging ear 7 can be hooked on the fixing post 10 to achieve relative fixation between the screen plate 4 and the diversion plate 5; during the screening operation, the material is dispersed and dropped through the dropping holes 9 of the diversion plate 5 in sequence, and then screened through the screen plate 4.

[0020] Furthermore, a snap-fit ​​groove 11 is provided circumferentially on the inner side wall of the screening tank 1, and the outer edge of the screen plate 4 is snapped into the snap-fit ​​groove 11.

[0021] Furthermore, the mating part 8 is at least one radially outwardly extending insert provided on the lower surface of the flow divider 5, and the positioning member 3 is an axially extending slot corresponding to the upper end of the screening tank 1. The bottom of the slot is formed with a lower limiting tooth 31, and the end of the insert is formed with an upper limiting tooth 81 that meshes with the lower limiting tooth 31. When the insert is inserted into the slot, the upper limiting tooth 81 meshes with the lower limiting tooth 31 to restrict the circumferential rotation of the flow divider 5.

[0022] Furthermore, the buckle structure includes a mounting base 91 fixed to the outer surface of the screening tank 1, a lever 93 rotatably mounted on the mounting base 91 via a rotating shaft 92, a pressing part 94 connected to the lever 93, and a torsion spring installed between the lever 93 and the mounting base 91; the torsion spring is used to keep the pressing part 94 pressing the cover 2; when the lever 93 is turned, it rotates relative to the mounting base 91 against the force of the torsion spring, driving the pressing part 94 to move away from the cover 2 to achieve unlocking; after the lever 93 is released, the pressing part 94 resets and presses the cover 2 again under the action of the torsion spring.

[0023] Furthermore, the pressing part 94 has an arc-shaped structure, and its arc surface is adapted to the outer periphery of the cover 2.

[0024] Furthermore, the pressing part 94 and the lever block 93 are integrally formed.

[0025] Furthermore, the fixing post 10 is threaded with an anti-detachment cap 101, which is used to fix the hanging ear 7 to the diverter plate 5.

[0026] This embodiment provides a chemical coating screening machine. (Refer to...) Figure 1 Its main body includes a screening tank 1, a cover 2, a positioning component 3, a screen plate 4, and a diversion plate 5.

[0027] The screening tank 1 is a cylindrical structure with an open top, and its internal space forms the screening chamber 6. The cover 2 is a circular cover adapted to the opening, and is detachably locked in place by multiple snap-fit ​​structures located between its outer edge and the outer edge of the screening tank 1. For details of the snap-fit ​​structure, please refer to [link to relevant documentation]. Figure 1 It includes a mounting base 91 bolted to the outer wall of the screening tank 1. A lever 93 is mounted on the mounting base 91 via a transverse rotating shaft 92, and the lever 93 can rotate around the rotating shaft 92. A clamping part 94 is connected to the inner side of the lever 93 (facing the cover 2). The clamping part 94 is preferably an arc-shaped structure, and its inner arc surface matches the cylindrical outer contour of the cover 2 to increase the contact area and achieve stable clamping. A torsion spring is installed between the lever 93 and the mounting base 91. In the natural state, the torque of the torsion spring drives the lever 93 and the clamping part 94 to press the cover 2 inward (locked state). When it is necessary to open, the lever 93 is pushed outward to overcome the torque of the torsion spring and rotate, which drives the clamping part 94 to move outward and release the clamping from the cover 2 (unlocked state), thereby allowing the cover 2 to be removed.

[0028] Three positioning elements 3 are fixed to the upper inner wall of the screening tank 1. In this embodiment, the positioning elements 3 are slots with axial extension at the upper end of the screening tank 1. The screen plate 4 is horizontally arranged in the screening chamber 6, and its outer edge can be snapped into the annular snap-fit ​​groove 11 opened circumferentially on the inner side wall of the screening tank 1 to achieve quick installation and support. Two hanging ears 7 are rotatably connected to the upper surface of the screen plate 4 by hinges or pins.

[0029] The diversion plate 5 is arranged parallel above the screen plate 4, and the mating part 8 is located at the lower end of the diversion plate 5. The mating part 8 is at least one radially outward extending insert on the lower surface of the diversion plate 5. The upper end of the screening tank 1 is provided with an axially extending slot, which can achieve preliminary radial positioning. Multiple through-holes 9 are evenly machined on the plate body of the diversion plate 5, and two fixing posts 10 are welded to the upper surface of the diversion plate 5.

[0030] During assembly, firstly, the flow divider plate 5 is aligned and inserted into the corresponding slot 9 at the upper end of the screening tank 1 via the insert block 8 on its lower surface to achieve initial positioning. Then, the screen plate 4 is placed in, with its outer edge engaging the snap-fit ​​groove 7 on the inner wall of the screening tank 1. Next, the fixing post 53 on the flow divider plate 5 is pressed down, compressing the internal spring (not shown) and moving the fixing post 53 into the flow divider plate 5. At this time, the rotatable hanging ear 41 on the screen plate 4 is lifted upwards, aligning its through hole with the fixing post 53. The fixing post 53 is released, and it returns to its original position under the action of the spring, allowing one end of the fixing post 53 to pass through the through hole of the hanging ear 41. The hanging ear 41 is then hung on the fixing post 53. Finally, the anti-detachment cap 54 is screwed into the top of the fixing post 53 and locked, thus firmly fixing the hanging ear 41 to the flow divider plate 5, achieving a detachable connection and relative fixation between the screen plate 4 and the flow divider plate 5. Finally, cover 2 is placed on top and locked with a snap-fit ​​mechanism. The lower edge of cover 2 will press against the outer edge of the diversion plate 5, thus completing the axial fixation of the entire component. During screening, the material is dispersed through the discharge holes 9 of the diversion plate 5 and then falls evenly onto the screen plate 4 for screening.

[0031] Based on the above technical solution, this application has multiple triangular tooth-shaped protrusions evenly distributed circumferentially on the bottom of the slot, forming a lower limiting tooth 31. At the end of the insert block that extends into the slot, a triangular tooth-shaped structure matching the lower limiting tooth 31 is also machined, forming an upper limiting tooth 81. When the insert block is inserted into place, the upper limiting tooth 81 at its end will mesh with the lower limiting tooth 31 at the bottom of the slot. This meshing structure effectively prevents the diverter plate 5 from rotating or shifting circumferentially due to material impact or equipment vibration during operation, ensuring that the relative position of the diverter plate 5 and the material discharge hole 9 area of ​​the lower screen plate 4 always accurately corresponds, guaranteeing consistent dispersion effect.

[0032] In this embodiment, the latching block 93 and the clamping part 94 are manufactured using an integral molding process, such as casting or stamping, into a single metal part. This integral molding design eliminates connection gaps, improves the connection strength and overall rigidity between the clamping part 94 and the latching block 93, making the clamping action more reliable, the structure more durable, and also simplifying the assembly process. The arc-shaped inner surface of the clamping part 94 can be polished to reduce wear during friction with the outer wall of the cover 2.

[0033] This invention utilizes a diversion plate with evenly distributed material drop holes arranged parallel above the screen plate. This allows the input material to be dispersed into multiple uniform streams through these holes before falling onto the screen plate. This structure effectively avoids localized impact and load concentration caused by material accumulation in the central area of ​​the screen plate, resulting in a more uniform material distribution on the screen surface. Furthermore, the radial positioning of the positioning components and mating parts, the axial fixing of the cover body, and the hook connection between the hanging ears and the fixing column enable quick and reliable detachable fixing between the screen plate and the diversion plate. This structure ensures the overall stability of the screening assembly during operation and allows for easy individual disassembly of both the screen plate and the diversion plate, facilitating cleaning, replacement, and maintenance, significantly reducing the difficulty and time cost of equipment maintenance.

[0034] It should be noted that the screening machine described in this application is not a general solid screening device. Its overall structure and detailed design are targeted innovations closely based on the material characteristics, production processes, and quality control requirements of chemical coatings (especially liquid coatings and slurries). Specifically, pigments and filler slurries in chemical coatings often have high viscosity. The diverting plate specially designed in this application has the core function of mechanically and forcibly dividing and dispersing a viscous, concentrated material flow into multiple fine streams before it comes into contact with the screen plate. This alleviates the clogging problem at its source, which is a key design feature addressing the pain points of coating screening.

[0035] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A chemical coating screening machine, characterized in that, The system includes a screening tank (1), a cover (2), a positioning element (3), a sieve plate (4), and a diverter plate (5). The screening tank (1) has an opening at the top, forming a screening chamber (6) inside. The cover (2) is detachably installed at the opening of the screening tank (1) and locked in place by a snap-fit ​​structure between its outer edge and the outer edge of the screening tank (1). The positioning element (3) is fixedly installed at the upper end of the screening tank (1). The sieve plate (4) is horizontally arranged in the screening chamber (6) and is connected with at least one hanging lug (7). The diverter plate (5) is arranged parallel above the sieve plate (4), and its lower end is provided with a component that can be inserted into the positioning element (3). The diversion plate (5) is provided with multiple through-holes (9) evenly distributed on the mating part (8) or snap-fit ​​part (8), and the upper surface of the diversion plate (5) is provided with a fixing post (10) for hooking and connecting with the hanging ear (7); after assembly, the diversion plate (5) is radially positioned by the mating part (8) and the positioning part (3), and is axially pressed and fixed by the cover (2) pressing its periphery. The hanging ear (7) can be hooked on the fixing post (10) to achieve relative fixation between the screen plate (4) and the diversion plate (5); during screening, the material is dispersed and dropped through the dropping holes (9) of the diversion plate (5) in sequence, and then screened through the screen plate (4).

2. The chemical coating screening machine according to claim 1, characterized in that, The inner sidewall of the screening tank (1) is provided with a snap-fit ​​groove (11) along the circumferential direction, and the outer edge of the screen plate (4) is snapped into the snap-fit ​​groove (11).

3. The chemical coating screening machine according to claim 1, characterized in that, The mating part (8) is at least one radially outwardly extending insert provided on the lower surface of the flow divider (5), and the positioning member (3) is an axially extending slot provided corresponding to the upper end of the screening tank (1). The bottom of the slot is formed with a lower limiting tooth (31), and the end of the insert is formed with an upper limiting tooth (81) that meshes with the lower limiting tooth (31). When the insert is inserted into the slot, the upper limiting tooth (81) meshes with the lower limiting tooth (31) to restrict the circumferential rotation of the flow divider (5).

4. A chemical coating screening machine according to claim 1, characterized in that, The buckle structure includes a mounting base (91) fixed to the outer surface of the screening tank (1), a lever (93) rotatably mounted on the mounting base (91) via a rotating shaft (92), a pressing part (94) connected to the lever (93), and a torsion spring installed between the lever (93) and the mounting base (91); the torsion spring is used to keep the pressing part (94) pressing the cover (2); when the lever (93) is turned, it rotates relative to the mounting base (91) against the force of the torsion spring, driving the pressing part (94) to move away from the cover (2) to unlock; after the lever (93) is released, the pressing part (94) resets under the action of the torsion spring and presses the cover (2) again.

5. A chemical coating screening machine according to claim 4, characterized in that, The pressing part (94) has an arc-shaped structure, and its arc surface is adapted to the outer periphery of the cover (2).

6. A chemical coating screening machine according to claim 4, characterized in that, The pressing part (94) and the lever (93) are integrally formed.

7. A chemical coating screening machine according to claim 1, characterized in that, The fixing post (10) is threaded with an anti-detachment cap (101), which is used to fix the hanging ear (7) on the diverter plate (5).

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