Glass powder grinding process, grinding and screening system and screening equipment

Abstract

The invention belongs to the technical field of grinding, and particularly relates to a glass powder grinding process. The invention provides a glass powder grinding process which comprises the following steps: S1, preparing raw materials, cleaning pollutants on the surfaces of the raw materials, and then pre-crushing the raw materials; s2, grinding: grinding the raw materials by using a grinding device to reach a preset particle size; s3, primary screening is conducted, specifically, the ground materials enter a primary screening device, qualified materials enter a material receiving device, and unqualified materials are conveyed to a secondary screening device; s4, secondary screening is conducted, specifically, after the materials enter a secondary screening device, qualified materials are conveyed to a material receiving device, and unqualified materials are conveyed to a backflow device; and S3 and S4 are matched, so that screening work can be continued without shutdown when the screen for primary screening is blocked, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of grinding technology, and in particular relates to a glass powder grinding process, a grinding and screening system and a screening device. Background Art

[0002] Mechanical grinding is the process of processing raw glass into powder through physical force. This method uses high-speed rotating grinding tools to grind raw glass into fine particles, which has the characteristics of simple operation, low cost and high grinding efficiency.

[0003] In the related art, after the raw glass is processed into fine particles by grinding equipment, the processed particles are transported to a screening device, which screens particles with too large a particle size and transports the particles with too large a particle size to the grinding equipment for further processing.

[0004] However, particles with too large a size will clog the pores of the screen as the screen in the screening device rotates centrifugally. When the screen is partially clogged, particles with qualified particle sizes will flow back to the grinding equipment again, causing energy waste. When the screen is seriously clogged, it may even affect the normal operation of the screening device, requiring shutdown for maintenance, which in turn reduces work efficiency.

[0005] Therefore, how to solve the problem of shutdown of the screening device due to blockage in the grinding process is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The embodiments of the present disclosure at least provide a plate and a working method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a plate material, comprising: Step S1, raw material preparation, cleaning the pollutants on the surface of the raw material and pre-crushing it; Step S2, grinding, using a grinding device to grind the raw material to reach a preset particle size; Step S3, primary screening, the ground material enters the primary screening device, the qualified material enters the material receiving device, and the unqualified material is transported to the secondary screening device. If the primary screening device is blocked, the mixed material enters the secondary screening device; Step S4, secondary screening, after the mixed material enters the secondary screening device, qualified materials are transported to the material receiving device, and unqualified materials are transported to the reflux device.

[0009] In an optional embodiment, during the initial screening in step S3, the material collecting device is connected to a negative pressure suction device, and the negative pressure suction device is suitable for negatively pressure sucking qualified materials after screening in the initial screening device to the material collecting device.

[0010] In an optional embodiment, during the secondary screening in step S4, both ends of the reflux device are connected to the secondary screening device and the grinding device respectively, and the reflux device negatively pressure sucks the material in the secondary screening device to transport the material to the grinding device.

[0011] In a second aspect, the present disclosure also provides a grinding and screening system, including: Support frame; A grinding device, which is arranged on the support frame, and the grinding device is suitable for grinding the glass block; A primary screening device, which is arranged below the grinding device and is connected to the grinding device through a pipeline; A secondary screening device, which is arranged on one side of the primary screening device; A material collecting device, which is arranged on the supporting frame and is connected with the primary screening device and the secondary screening device respectively; A reflux device, which is arranged on one side of the secondary screening device and is connected to the grinding device; Wherein, after the material ground by the grinding device enters the primary screening device, the primary screening device is suitable for conveying qualified materials to the material receiving device, and conveying unqualified materials back to the grinding device through the reflux device; The screens of several primary screening devices are clogged, and the materials are passing through the secondary screening device, which is suitable for conveying qualified materials to the material receiving device.

[0012] In an optional embodiment, the primary screening device comprises: a driving motor, which is arranged on a support frame; An outer cylinder is arranged above the driving motor and is drivingly connected to the driving motor; A spiral screen is disposed in the outer cylinder and is connected to the grinding device; A receiving cavity suitable for storing materials is provided between the outer wall of the spiral screen and the inner wall of the outer cylinder; The positioning plate is arranged on the support frame, and the outer cylinder and the spiral screen are both rotatably arranged on the side wall of the positioning plate. The side wall of the positioning plate is provided with a connecting pipe, one end of which is connected to the accommodating cavity, and the other end of which is connected to the material receiving device; The outer cylinder drives the spiral screen to rotate synchronously, and in the process of driving the material to move to the secondary screening device, the qualified material is screened and falls into the containing chamber; The connecting pipe is suitable for sucking the material in the containing chamber to the material receiving device under negative pressure; If the spiral screen is blocked, the spiral screen rotates to transport part of the qualified materials to the secondary screening device.

[0013] In an optional embodiment, the secondary screening device includes: a containing cylinder, which is arranged on the side wall of the positioning plate and is connected to the spiral screen; A paddle blade is rotatably disposed in the receiving tube; A feeding hole is formed on the side wall of the accommodating cylinder, and the aperture of the feeding hole is consistent with the aperture of the spiral screen; The material discharge hole is communicated with the material receiving device, and the material discharge hole is arranged on the side wall of the accommodating cylinder close to the positioning plate; A return hole is provided on the outer wall of the accommodating cylinder away from the positioning plate, and the return hole is connected to the reflux device; wherein the paddles rotate to convey the material entering the receiving tube toward the reflux device; The material moves to the discharge hole, and the qualified material is suitable for flowing through the discharge hole to the receiving device.

[0014] In an optional embodiment, a plurality of convex blocks are arranged at equal intervals on the circumferential inner wall of the accommodating tube, the convex blocks are arranged below the blades, the convex blocks are flexible parts, and the convex blocks are suitable for abutting against the outer end wall of the blades; When the blade rotates circumferentially until it abuts against the protrusion, the protrusion is squeezed and deformed. When the blade is separated from the protrusion, the protrusion is reset to hit the blade, so that the blade shakes relative to the accommodating tube.

[0015] In an optional embodiment, the reflux device includes: a reflux pipe, both ends of which are respectively connected to the grinding device and the outer cylinder; The driving part is arranged in the middle of the reflux pipe, and is suitable for sucking the material in the outer cylinder by negative pressure and conveying it to the grinding device.

[0016] In a third aspect, the present disclosure also provides a screening device, including: A primary screening device, which is arranged below the grinding device and communicated with the grinding device; A secondary screening device, which is arranged on one side of the primary screening device and is connected to the reflux device; The secondary screening device comprises: a containing cylinder, which is arranged on the side wall of the positioning plate and is connected to the spiral screen; A paddle blade is rotatably disposed in the receiving tube; A feeding hole is formed on the side wall of the accommodating cylinder, and the aperture of the feeding hole is consistent with the aperture of the spiral screen; The material discharge hole is communicated with the material receiving device, and the material discharge hole is arranged on the side wall of the accommodating cylinder close to the positioning plate; A return hole is provided on the outer wall of the accommodating cylinder away from the positioning plate, and the return hole is connected to the reflux device; wherein the paddles rotate to convey the material entering the receiving tube toward the reflux device; The material moves to the discharge hole, and the qualified material is suitable for flowing through the discharge hole to the receiving device.

[0017] In an optional embodiment, a plurality of convex blocks are arranged at equal intervals on the circumferential inner wall of the accommodating tube, the convex blocks are arranged below the blades, the convex blocks are flexible parts, and the convex blocks are suitable for abutting against the outer end wall of the blades; When the blade rotates circumferentially until it abuts against the protrusion, the protrusion is squeezed and deformed. When the blade is separated from the protrusion, the protrusion is reset to hit the blade, so that the blade shakes relative to the accommodating tube.

[0018] In an optional embodiment, the primary screening device comprises: a driving motor, which is arranged on a support frame; An outer cylinder is arranged above the driving motor and is drivingly connected to the driving motor; A spiral screen is disposed in the outer cylinder and is connected to the grinding device; A receiving cavity suitable for storing materials is provided between the outer wall of the spiral screen and the inner wall of the outer cylinder; The positioning plate is arranged on the support frame, and the outer cylinder and the spiral screen are both rotatably arranged on the side wall of the positioning plate. The side wall of the positioning plate is provided with a connecting pipe, one end of which is connected to the accommodating cavity, and the other end of which is connected to the material receiving device; The outer cylinder drives the spiral screen to rotate synchronously, and in the process of driving the material to move to the secondary screening device, the qualified material is screened and falls into the containing chamber; The connecting pipe is suitable for sucking the material in the containing chamber to the material receiving device under negative pressure; If the spiral screen is blocked, the spiral screen rotates to transport part of the qualified materials to the secondary screening device. The beneficial effect of the present invention is that the glass powder grinding process, grinding and screening system and screening device of the present invention can improve the filtering effect through the setting of the primary screening device and the secondary screening device. At the same time, when the screen of the primary screening device is blocked, the secondary screening device can continue to filter the qualified materials, avoiding the qualified materials from flowing back to the grinding device, not only does it not need to be shut down for maintenance, but also avoids the waste caused by the backflow of qualified materials.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of a glass powder grinding process provided by an embodiment of the present disclosure; Figure 2 A three-dimensional diagram of a grinding and screening system provided for an embodiment of the present disclosure; Figure 3 A sectional stereoscopic view of a primary screening device and a secondary screening device provided in an embodiment of the present disclosure; Figure 4 A schematic diagram of a material provided in an embodiment of the present disclosure passing through a primary screening device and a secondary screening device.

[0023] In the figure: 1. Support frame; 2. Grinding device; 3. Primary screening device; 31. Driving motor; 32. Outer cylinder; 33. Spiral screen; 34. Positioning plate; 35. Connecting pipe; 36. Accommodating chamber; 4. Secondary screening device; 41. Accommodating cylinder; 42. Paddle; 43. Feeding hole; 44. Feeding hole; 45. Bump; 5. Material collecting device; 6. Reflux device; 51. Reflux pipe; 52. Driving unit. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0026] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0028] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0029] After research, it was found that the shortcomings of the existing technology are: in the related technology, after the raw glass is processed into fine particles by grinding equipment, the processed particles are transported to the screening device, the screening device screens the particles with too large particle size, and transports the particles with too large particle size to the grinding equipment again for further processing.

[0030] However, particles with too large a size will clog the pores of the screen as the screen in the screening device rotates centrifugally. When the screen is partially clogged, particles with qualified particle sizes will flow back to the grinding equipment again, causing energy waste. When the screen is seriously clogged, it may even affect the normal operation of the screening device, requiring shutdown for maintenance, which in turn reduces work efficiency.

[0031] Therefore, how to solve the problem of shutdown of the screening device due to blockage in the grinding process is a technical problem that urgently needs to be solved in this field.

[0032] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] like Figure 1 As shown, some embodiments provide a glass powder grinding process, including: Step S1, raw material preparation, after cleaning the surface contaminants of the raw materials, pre-crush them; in the raw material preparation stage, it is necessary to select appropriate glass raw materials, such as waste glass, glass fiber or molten glass, to ensure the purity and quality of the glass. If there are impurities, the glass raw materials need to be cleaned to remove surface contaminants. At the same time, the size of the raw materials needs to be selected according to the needs, and the oversized particles need to be initially crushed to reach a particle size suitable for grinding. Step S2, grinding, use a grinding device to grind the raw materials to reach a preset particle size; during the grinding process, the glass raw materials spiral into the grinding device from top to bottom to facilitate grinding the glass raw materials into small particles. Step S3, primary screening, the ground material enters the primary screening device 3, and the qualified material enters the material receiving device 5. When the ground material passes through the primary screening device 3, the outer cylinder 32 drives the spiral screen 33 to rotate synchronously to screen the material. The material with a particle size smaller than the mesh of the spiral screen 33 enters the accommodating chamber 36 and is finally transported to the material receiving device 5, while the material with a particle size larger than the spiral screen 33 is intercepted by the spiral screen 33 and transported to the accommodating cylinder 41. The unqualified material is transported to the secondary screening device. If the primary screening device 3 is blocked, the mixed material enters the secondary screening device 4;.

[0036] Step S4, secondary screening, after the mixed material enters the secondary screening device 4, the qualified material is transported to the material receiving device 5, and the unqualified material is transported to the reflux device 6. When the spiral screen 33 is not blocked, the paddle 42 serves to transport the unqualified material to the reflux device 6, and when the spiral screen 33 is blocked, some qualified materials cannot fall smoothly into the accommodating chamber 36, and some qualified materials move along the inner wall of the spiral screen 33 into the accommodating cylinder 41; and in order to prevent some small particles of material from flowing back into the grinding device 2 again through the reflux device 6, the rotation of the paddle 42 can push the material to move in the accommodating cylinder 41, and the discharge hole 43 can filter and screen the material again. Further, during the initial screening in the step S3, the material receiving device 5 is connected to the negative pressure suction device, and the negative pressure suction device is suitable for negatively suctioning the qualified materials after screening in the primary screening device 3 to the material receiving device 5.

[0037] Furthermore, during the secondary screening in step S4, both ends of the reflux device 6 are connected to the secondary screening device 4 and the grinding device respectively, and the reflux device 6 negatively sucks the material in the secondary screening device 4 to transport the material to the grinding device 2.

[0038] like Figures 2 to 4 As shown, some embodiments provide a grinding and screening system, comprising: a support frame 1; a grinding device 2, which is arranged on the support frame 1, and the grinding device 2 is suitable for grinding glass blocks; preferably, the grinding device 2 can be a ball mill, and in order to reduce friction, water or grinding aids can be added to the grinding device, and the particle size of the material discharged from the bottom discharge port of the grinding device can be adjusted by controlling the grinding time of the glass raw material in the grinding device.

[0039] The primary screening device 3 is arranged below the grinding device 2 and is connected to the grinding device 2 through a pipeline. The primary screening device 3 is suitable for circumferential rotation relative to the pipeline. During its rotation, small particles of qualified materials pass through the spiral screen 33 and fall into the accommodating chamber 36, while large particles of unqualified materials move along the inner wall of the spiral screen 33 into the accommodating cylinder 41. The secondary screening device 4 is arranged on one side of the primary screening device 3; the material collecting device 5 is arranged on the support frame 1 and is respectively connected with the primary screening device 3 and the secondary screening device 4; the reflux device 6 is arranged on one side of the secondary screening device 4 and is connected with the grinding device 2; wherein, after the material ground by the grinding device 2 enters the primary screening device 3, the primary screening device 3 is suitable for conveying qualified materials to the material collecting device 5, and unqualified materials are conveyed back to the grinding device 2 through the reflux device 6; when the screen of some primary screening devices 3 is blocked, the secondary screening device 4 is suitable for conveying qualified materials to the material collecting device 5 during the process of the material passing through the secondary screening device 4. Through the cooperation of the primary screening device 3 and the secondary screening device 4, the filtering effect can be improved. At the same time, when the screen of the primary screening device 3 is blocked, the secondary screening device 4 can continue to filter qualified materials, avoiding the qualified materials from flowing back to the grinding equipment, not only does it not need to be shut down for maintenance, but also avoids the waste caused by the reflux of qualified materials.

[0040] Reference Figure 3The primary screening device 3 comprises: a driving motor 31, which is arranged on the support frame 1; the driving motor 31 is arranged horizontally, a gear is sleeved on the end of the rotating shaft of the driving motor 31, and a toothed disc is sleeved on the outer wall of the outer cylinder 32, the toothed disc and the gear are meshed with each other, and the driving motor 31 is suitable for driving the outer cylinder 32 to rotate. The outer cylinder 32 is arranged above the driving motor 31 and is in transmission connection with the driving motor 31; the outer cylinder 32 is conical, and its outer diameter gradually increases from the end close to the grinding device 2 to the end of the driving motor 31; the outer cylinder 32 is placed horizontally, and the outer cylinder 32 is suitable for circumferential rotation relative to the pipeline and the positioning disk 34. The spiral screen 33 is arranged in the outer cylinder 32 and is connected to the grinding device 2; the inner wall of the spiral screen 33 is provided with a spiral guide bar, and when the spiral screen 33 rotates, it is suitable for driving the internal material to move in the direction of the positioning disk 34. The inner diameter of the mesh of the spiral screen 33 is consistent with the particle size of the qualified material, that is, when the qualified material enters the spiral screen 33, the qualified material is suitable for passing through the mesh and falling into the accommodating chamber 36 when the spiral screen 33 rotates; and when the particle size of the material exceeds the inner diameter of the mesh, the spiral screen 33 rotates to drive the unqualified material to move to the accommodating cylinder 41. The unqualified materials here refer to materials with a particle size larger than the mesh of the spiral screen 33. An accommodating chamber 36 suitable for storing materials is provided between the outer wall of the spiral screen 33 and the inner wall of the outer cylinder 32; the positioning plate 34 is arranged on the support frame 1, and the outer cylinder 32 and the spiral screen 33 are both rotatably arranged on the side wall of the positioning plate 34, and a connecting pipe 35 is arranged on the side wall of the positioning plate 34, one end of the connecting pipe 35 is connected to the accommodating chamber 36, and the other end is connected to the material receiving device 5; the material in the accommodating chamber 36 is sucked to the material receiving device 5 by negative pressure through the connecting pipe 35. Among them, the outer cylinder 32 drives the spiral screen 33 to rotate synchronously, and in the process of driving the material to move to the secondary screening device 4, the qualified material is screened and falls into the accommodating chamber 36; the connecting pipe 35 is suitable for negatively suctioning the material in the accommodating chamber 36 to the material receiving device 5; if the spiral screen 33 is blocked, the spiral screen 33 rotates to transport part of the qualified material to the secondary screening device 4.

[0041] Reference Figure 4The secondary screening device 4 comprises: a receiving cylinder 41, which is arranged on the side wall of the positioning plate 34 and communicated with the spiral screen 33; a connecting hole is provided on the circumferential outer wall of the receiving cylinder 41 relative to the return hole 44, and the connecting hole is communicated with the spiral screen 33, and the spiral screen 33 can transport large particles of materials into the receiving cylinder 41 when rotating. The paddle 42 is rotatably arranged in the receiving cylinder 41; the paddle 42 comprises a rotating column and blades fixed on the outer wall of the rotating column, and the outer end wall of the blade is in contact with the inner wall of the receiving cylinder 41, and a motor is fixed on the outer wall of the receiving cylinder 41, and the rotating column is sleeved on the outer wall of the rotating shaft of the motor, and the motor is suitable for driving the rotating column to rotate. A feeding hole 43 is provided on the side wall of the accommodating cylinder 41, and the aperture of the feeding hole 43 is consistent with the aperture of the spiral screen 33; the feeding hole 43 is communicated with the collecting device 5, and the feeding hole 43 is provided on the side of the accommodating cylinder 41 close to the collecting device 5, and the feeding hole 43 is arranged on the side wall of the accommodating cylinder 41 close to the positioning disk 34; a return hole 44 is provided on the outer wall of the accommodating cylinder 41 away from the positioning disk 34, and the return hole 44 is communicated with the reflux device 6; wherein, the paddle 42 rotates to convey the material entering the accommodating cylinder 41 to the reflux device 6; when the spiral screen 33 conveys unqualified material into the accommodating cylinder 41, the paddle 42 rotates to drive the material to move from the feeding hole 43 to the return hole 44, and when the material moves to the feeding hole 43, the qualified material is suitable for moving from the feeding hole 43 to the collecting device 5, and the unqualified material is pushed by the paddle 42 to move in the direction of the return hole 44. The material moves to the discharge hole 43, and the qualified material is suitable for passing through the discharge hole 43 to flow to the receiving device 5. If the mesh of the spiral screen 33 is blocked, at this time, when the spiral screen 33 rotates, some qualified materials will be transported to the containing cylinder 41, and the discharge hole 43 can screen the qualified materials to prevent them from moving to the reflux device 6.

[0042] Furthermore, a plurality of protrusions 45 are provided at equal intervals on the circumferential inner wall of the accommodating tube 41. The protrusions 45 are provided below the paddle 42. The protrusions 45 are flexible parts and are suitable for contacting with the outer end wall of the paddle 42. When the paddle 42 rotates circumferentially to contact with the protrusions 45, the protrusions 45 are squeezed and deformed. When the paddle 42 is separated from the protrusions 45, the protrusions 45 are reset to hit the paddle 42, so that the paddle 42 shakes relative to the accommodating tube 41. The paddle 42 is pushed and vibrated by the protrusions 45, so that the material above the paddle 42 shakes in the accommodating tube 41, thereby avoiding the mutual squeezing of the materials and causing the qualified materials to fail to fall into the discharge hole 43.

[0043] Furthermore, the reflux device 6 comprises: a reflux pipe 51, both ends of which are respectively connected to the grinding device 2 and the outer cylinder 32; The driving part 52 is arranged in the middle of the reflux pipe 51 , and the driving part 52 is suitable for sucking the material in the outer cylinder 32 by negative pressure and conveying it to the grinding device 2 .

[0044] Some embodiments provide a screening device, comprising: A primary screening device 3, which is arranged below the grinding device 2 and is in communication with the grinding device 2; A secondary screening device 4, which is arranged on one side of the primary screening device 3 and is connected to the reflux device 6; The secondary screening device 4 comprises: a receiving cylinder 41, which is arranged on the side wall of the positioning plate 34 and communicated with the spiral screen 33; A paddle 42, which is rotatably disposed in the receiving tube 41; The side wall of the accommodating cylinder 41 is provided with a material discharge hole 43, and the aperture of the material discharge hole 43 is consistent with the aperture of the spiral screen 33; The material discharge hole 43 is connected to the material receiving device 5, and the material discharge hole 43 is arranged on the side wall of the accommodating tube 41 close to the positioning plate 34; A return hole 44 is formed on the outer wall of the accommodating tube 41 away from the positioning plate 34, and the return hole 44 is connected to the reflux device 6; The paddle 42 rotates to transport the material entering the receiving tube 41 to the reflux device 6; The material moves to the discharge hole 43 , and the qualified material is suitable for flowing through the discharge hole 43 to the receiving device 5 .

[0045] Furthermore, a plurality of convex blocks 45 are arranged at equal intervals on the circumferential inner wall of the accommodating tube 41. The convex blocks 45 are arranged below the paddle 42. The convex blocks 45 are flexible members, and the convex blocks 45 are suitable for abutting against the outer end wall of the paddle 42. When the paddle 42 rotates circumferentially until it abuts against the protrusion 45 , the protrusion 45 is squeezed and deformed. When the paddle 42 is disengaged from the protrusion 45 , the protrusion 45 is reset to hit the paddle 42 , so that the paddle 42 shakes relative to the accommodating tube 41 .

[0046] Furthermore, the primary screening device 3 comprises: a driving motor 31, which is arranged on the support frame 1; The outer cylinder 32 is disposed above the driving motor 31 and is drivingly connected to the driving motor 31; A spiral screen 33, which is disposed in the outer cylinder 32 and communicated with the grinding device 2; A receiving cavity 36 suitable for storing materials is provided between the outer wall of the spiral screen 33 and the inner wall of the outer cylinder 32; The positioning plate 34 is arranged on the support frame 1, and the outer cylinder 32 and the spiral screen 33 are both rotatably arranged on the side wall of the positioning plate 34. The side wall of the positioning plate 34 is provided with a connecting pipe 35, one end of the connecting pipe 35 is connected with the accommodating cavity 36, and the other end is connected with the material receiving device 5; The outer cylinder 32 drives the spiral screen 33 to rotate synchronously, and in the process of driving the material to move to the secondary screening device 4, the qualified material is screened and falls into the accommodating chamber 36; The connecting pipe 35 is suitable for sucking the material in the containing chamber 36 to the material receiving device 5 under negative pressure; If the spiral screen 33 is blocked, the spiral screen 33 rotates to transport part of the qualified materials to the secondary screening device 4 .

[0047] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0049] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A glass powder grinding process, characterized in that: include: Step S1, raw material preparation, cleaning the raw material to pre-crush it; Step S2, grinding, using a grinding device (2) to grind the raw material to reach a preset particle size; Step S3, primary screening, the ground material enters the primary screening device (3), qualified material enters the material receiving device (5), and unqualified material is transported to the secondary screening device (4). If the primary screening device (3) is blocked, the mixed material enters the secondary screening device (4); Step S4, secondary screening, after being mixed and entering the secondary screening device (4), qualified materials are transported to the material receiving device (5), and unqualified materials are transported to the reflux device (6).

2. The glass powder grinding process according to claim 1, characterized in that: During the initial screening in step S3, the material receiving device (5) is connected to the negative pressure suction device, and the negative pressure suction device is suitable for negatively suctioning the qualified materials after screening in the initial screening device (3) to the material receiving device (5).

3. The glass powder grinding process according to claim 2, characterized in that: During the secondary screening in step S4, the two ends of the reflux device (6) are respectively connected to the secondary screening device (4) and the grinding device (2), and the reflux device (6) negatively sucks the material in the secondary screening device (4) to transport the material to the grinding device (2).

4. A grinding and screening system using the glass powder grinding process according to any one of claims 1 to 3, characterized in that: include: Support frame (1); A grinding device (2) arranged on the support frame (1), wherein the grinding device (2) is suitable for grinding a glass block; A primary screening device (3), which is arranged below the grinding device (2) and is connected to the grinding device (2) via a pipeline; A secondary screening device (4), which is arranged on one side of the primary screening device (3); A material collecting device (5), which is arranged on the support frame (1) and is respectively connected to the primary screening device (3) and the secondary screening device (4); A reflux device (6) disposed on one side of the secondary screening device (4) and connected to the grinding device (2); Wherein, after the material ground by the grinding device (2) enters the primary screening device (3), the primary screening device (3) is suitable for conveying qualified material to the material receiving device (5), and conveying unqualified material back to the grinding device (2) via the reflux device (6); The screens of several primary screening devices (3) are clogged, and when the material passes through the secondary screening device (4), the secondary screening device (4) is suitable for conveying qualified material to the material receiving device (5).

5. The grinding and screening system according to claim 4, characterized in that: The primary screening device (3) comprises: a driving motor (31) which is arranged on a supporting frame (1); An outer cylinder (32) is disposed above the driving motor (31) and is drivingly connected to the driving motor (31); A spiral screen (33) disposed in the outer cylinder (32) and connected to the grinding device (2); A receiving cavity (36) suitable for storing materials is provided between the outer wall of the spiral screen (33) and the inner wall of the outer cylinder (32); The positioning plate (34) is arranged on the support frame (1), and the outer cylinder (32) and the spiral screen (33) are both rotatably arranged on the side wall of the positioning plate (34). A connecting pipe (35) is provided on the side wall of the positioning plate (34); one end of the connecting pipe (35) is connected to the accommodating cavity (36), and the other end is connected to the material receiving device (5); The outer cylinder (32) drives the spiral screen (33) to rotate synchronously, and in the process of driving the material to move toward the secondary screening device (4), the qualified material is screened and falls into the containing chamber (36); The connecting pipe (35) is suitable for sucking the material in the containing chamber (36) to the material receiving device (5) under negative pressure; If the spiral screen (33) is blocked, the spiral screen (33) rotates to transport part of the qualified material to the secondary screening device (4).

6. The grinding and screening system according to claim 5, characterized in that: The secondary screening device (4) comprises: a containing cylinder (41) which is arranged on the side wall of the positioning plate (34) and is in communication with the spiral screen (33); A paddle (42) rotatably disposed in the accommodating tube (41); A material discharge hole (43) is formed on the side wall of the accommodating cylinder (41), and the aperture of the material discharge hole (43) is consistent with the aperture of the spiral screen (33); The material discharge hole (43) is in communication with the material receiving device (5), and the material discharge hole (43) is arranged on the side wall of the accommodating cylinder (41) close to the positioning plate (34); A return hole (44) is provided on the outer wall of the accommodating cylinder (41) away from the positioning plate (34), and the return hole (44) is connected to the reflux device (6); The paddle (42) rotates to transport the material entering the containing cylinder (41) toward the reflux device (6); The material moves to the discharge hole (43), and the qualified material is suitable for passing through the discharge hole (43) and flowing to the receiving device (5).

7. The grinding and screening system according to claim 6, characterized in that: A plurality of protrusions (45) are arranged at equal intervals on the circumferential inner wall of the accommodating cylinder (41); the protrusions (45) are arranged below the blades (42); the protrusions (45) are flexible parts, and the protrusions (45) are suitable for abutting against the outer end wall of the blades (42); When the paddle (42) rotates circumferentially until it abuts against the protrusion (45), the protrusion (45) is squeezed and deformed, and when the paddle (42) is disengaged from the protrusion (45), the protrusion (45) is reset to impact the paddle (42), so that the paddle (42) vibrates relative to the accommodating tube (41).

8. The grinding and screening system according to claim 5, characterized in that: The reflux device (6) comprises: a reflux pipe (51), two ends of which are respectively connected to the grinding device (2) and the outer cylinder (32); A driving part (52) is arranged in the middle of the return pipe (51), and the driving part (52) is suitable for sucking the material in the outer cylinder (32) with negative pressure and conveying it to the grinding device (2).

9. A screening device for the glass powder grinding process according to any one of claims 1 to 3, characterized in that: include: A primary screening device (3), which is arranged below the grinding device (2) and is in communication with the grinding device (2); A secondary screening device (4), which is arranged on one side of the primary screening device (3) and is connected to the reflux device (6); The secondary screening device (4) comprises: a containing cylinder (41) which is arranged on the side wall of the positioning plate (34) and is in communication with the spiral screen (33); A paddle (42) rotatably disposed in the accommodating tube (41); A material discharge hole (43) is formed on the side wall of the accommodating cylinder (41), and the aperture of the material discharge hole (43) is consistent with the aperture of the spiral screen (33); The material discharge hole (43) is in communication with the material receiving device (5), and the material discharge hole (43) is arranged on the side wall of the accommodating cylinder (41) close to the positioning plate (34); A return hole (44) is provided on the outer wall of the accommodating cylinder (41) away from the positioning plate (34), and the return hole (44) is connected to the reflux device (6); The paddle (42) rotates to transport the material entering the containing cylinder (41) toward the reflux device (6); The material moves to the discharge hole (43), and the qualified material is suitable for passing through the discharge hole (43) and flowing to the receiving device (5).

10. The screening device according to claim 9, characterized in that A plurality of protrusions (45) are arranged at equal intervals on the circumferential inner wall of the accommodating cylinder (41); the protrusions (45) are arranged below the blades (42); the protrusions (45) are flexible parts, and the protrusions (45) are suitable for abutting against the outer end wall of the blades (42); When the paddle (42) rotates circumferentially until it abuts against the protrusion (45), the protrusion (45) is squeezed and deformed, and when the paddle (42) is disengaged from the protrusion (45), the protrusion (45) is reset to impact the paddle (42), so that the paddle (42) vibrates relative to the accommodating tube (41).

11. The screening device according to claim 9, characterized in that: The primary screening device (3) comprises: a driving motor (31) which is arranged on a supporting frame (1); An outer cylinder (32) is disposed above the driving motor (31) and is drivingly connected to the driving motor (31); A spiral screen (33) disposed in the outer cylinder (32) and connected to the grinding device (2); A receiving cavity (36) suitable for storing materials is provided between the outer wall of the spiral screen (33) and the inner wall of the outer cylinder (32); The positioning plate (34) is arranged on the support frame (1), and the outer cylinder (32) and the spiral screen (33) are both rotatably arranged on the side wall of the positioning plate (34). A connecting pipe (35) is provided on the side wall of the positioning plate (34); one end of the connecting pipe (35) is connected to the accommodating cavity (36), and the other end is connected to the material receiving device (5); The outer cylinder (32) drives the spiral screen (33) to rotate synchronously, and in the process of driving the material to move toward the secondary screening device (4), the qualified material is screened and falls into the containing chamber (36); The connecting pipe (35) is suitable for sucking the material in the containing chamber (36) to the material receiving device (5) under negative pressure; If the spiral screen (33) is blocked, the spiral screen (33) rotates to transport part of the qualified material to the secondary screening device (4).

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