Stirring paddle for inorganic shaving board production and mixing and stirring device
By designing a closed, three-dimensional symmetrical structure and a wear-resistant rubber scraper mixing paddle, the problems of uneven material mixing and easy damage to mixing equipment in the production of inorganic particleboard were solved, achieving efficient and stable mixing and discharge results.
Patent Information
- Application Number
- CN202511907880.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-03-17
AI Technical Summary
Existing mechanical mixing equipment in the production of inorganic particleboard suffers from problems such as material agglomeration, uneven mixing, low mixing and discharge efficiency, easy deformation and damage of mixing blades, and residue adhesion to the inner wall of the mixing chamber. Furthermore, the atomization of inorganic adhesives can easily clog spray nozzles, affecting the continuity of adhesive application.
Design a stirring impeller, including a stirring shaft, a radial connecting rod, an inner spiral impeller, an outer spiral impeller, and a middle spiral impeller, forming a closed three-dimensional symmetrical structure. Combined with an anchor frame impeller and a wear-resistant rubber scraper, it achieves a three-dimensional flow path and efficient mixing.
It improves the uniformity and efficiency of mixing, reduces production and maintenance costs, reduces adhesion to the inner wall of the mixing chamber, and enhances the stability and discharge effect of the mixing equipment.
Smart Images
Figure CN121669040A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of particle board production, in particular to a stirring paddle and mixing device for inorganic particle board production. BACKGROUND
[0002] In particle board production, the sizing method of liquid tri-aldehyde organic glue adopts atomization sizing, and the glue liquid is atomized and uniformly sprayed on the surface of the particle through a spraying device. However, the tri-aldehyde organic glue has the disadvantages of formaldehyde release and non-flame retardant. Inorganic adhesives have the advantages of formaldehyde-free environmental protection, flame retardation and smoke suppression, so a large amount of inorganic glue is used. The inorganic glue is mostly in granular or high-viscosity slurry form, and uneven distribution is easily caused by particle agglomeration during atomization. At the same time, the cement particles are large or have high viscosity, which easily causes the spraying holes to be blocked, affecting the continuity of sizing. Currently, some particle board production enterprises refer to the process of a cement mixing station and use mechanical stirring to mix inorganic glue with particles.
[0003] The common mechanical stirring equipment in the industry still has the problems of material agglomeration and uneven mixing after mixing and stirring the raw materials of inorganic particle board, and the efficiency of stirring and discharging is low. At the same time, the inner wall of the stirring bin is also adhered with residual inorganic glue, which affects the subsequent stirring effect.
[0004] In addition, when the mechanical stirring equipment mixes and stirs the raw materials of inorganic particle board, the friction force, impact force and torque generated between the stirring blade and the raw materials are very large, so thick blades with high bending resistance and shear resistance are required, and the thickness is usually not less than 10 mm. The one-time forming of thick blades has high requirements on the forming equipment and high processing cost, and the problems of uneven bending and local cracking are easily caused. During the mixing and stirring process, the operation is unstable, the blade is easily deformed and damaged, and the production and maintenance costs are increased. SUMMARY
[0005] In view of the above shortcomings of the prior art, the present application provides a stirring paddle and mixing device for inorganic particle board production, which improves the mechanical strength and stress stability of the stirring paddle and mixing device by designing and arranging a thick spiral blade paddle and a radial connecting rod fixedly connected by three splices, the stirring paddle is not easily deformed and damaged, the material mixing is more uniform, and the efficiency of stirring and discharging is high.
[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: A stirring paddle for inorganic particle board production, comprising: a stirring shaft for connecting power and driving the stirring paddle to rotate, a plurality of radial through holes are arranged on the outer circumferential surface of the stirring shaft at equal intervals along the axial direction, and the circumferential angle between any two adjacent radial through holes is 90°. Radial connecting rods, the number of which is twice the number of radial through holes, one end of each of the radial connecting rods is inserted into the radial through hole and fixedly connected with the stirring shaft, and the other end is a free end; The inner spiral blade paddle is a right-handed single spiral blade, and the inner spiral ring is fixedly connected to the outer circumferential surface of the stirring shaft. The outer spiral blade paddle is a right-handed double spiral blade arranged outside the inner spiral blade paddle, and includes two outer spiral blade paddles which are centrally symmetrically arranged around the axis of the stirring shaft, and the free end of each of the radial connecting rods is fixedly connected with the outer spiral blade paddle. The intermediate spiral blade paddle is a left-handed double spiral blade arranged between the inner spiral blade paddle and the outer spiral blade paddle, and includes two intermediate spiral blade paddles which are centrally symmetrically arranged around the axis of the stirring shaft, and the free end of each of the radial connecting rods is fixedly connected with the intermediate spiral blade paddle.
[0007] Further, the radial connecting rod sequentially includes an outer spiral blade paddle connecting portion, a first blade portion, an intermediate spiral blade paddle connecting portion, a second blade portion, and a stirring shaft connecting portion from the free end to the other end of the radial connecting rod, the first blade portion and the second blade portion each include two acute angle blades symmetrically arranged around the radial connecting rod, and the symmetry planes of the two acute angle blades are coplanar with the axis of the stirring shaft.
[0008] Further, the inner spiral blade paddle is formed by splicing and welding a plurality of inner spiral blade units, each of the inner spiral blade units is a whole spiral piece, and every two inner spiral blade units correspond to the stirring shaft connecting portion of one radial connecting rod and are fixedly connected and welded.
[0009] Further, the outer spiral blade paddle is formed by splicing and welding a plurality of outer spiral blade units, each of the outer spiral blade units is a quarter spiral piece, and each outer spiral blade unit corresponds to the outer spiral blade paddle connecting portion of two radial connecting rods and is fixedly connected and welded.
[0010] Further, the intermediate spiral blade paddle is formed by splicing and welding a plurality of intermediate spiral blade units, each of the intermediate spiral blade units is a quarter spiral piece, and each intermediate spiral blade unit corresponds to the intermediate spiral blade paddle connecting portion of two radial connecting rods and is fixedly connected and welded.
[0011] Further, an anchor frame paddle is further included, the anchor frame paddle includes four arc-shaped stirring plates symmetrically arranged at both ends of the stirring shaft, each of the arc-shaped stirring plates is fixedly welded on the radial connecting rod at the outermost end of the stirring shaft in the axial direction, and the plate surface of each of the arc-shaped stirring plates is perpendicular to the outer end surface of the stirring shaft, and the two arc-shaped anchor frame stirring plates at one end of the stirring shaft form a W shape.
[0012] Further, the arc-shaped stirring plate is provided with two end wall scraping plates made of wear-resistant rubber material, which are used to adhere to the two end walls of the stirring bin and scrape the inorganic glue adhered and remained.
[0013] Further, the anchor frame paddle is provided with two support bars on both sides, which are symmetrical along the stirring shaft axis, and the support bars are in contact with and welded to the free ends of all the radial connecting rods on the same side.
[0014] The mixing and stirring device for inorganic shaving board production comprises a base frame, a stirring bin and a driving motor mounted on the top of the base frame, an inlet on the top of the stirring bin, the stirring bin internally provided with the stirring paddle, a temporary storage bin and a discharge valve on the bottom of the stirring bin, and the driving motor connected with the stirring shaft of the stirring paddle through a speed reduction mechanism.
[0015] Compared with the prior art, the technical scheme of the present application has the following beneficial effects at least: (1) The stirring shaft, the radial connecting rods of the cross-shaped frame, the inner side screw paddle of the right-handed single screw belt, the outer side screw paddle of the right-handed double screw belt, the middle screw paddle of the left-handed double screw belt and the two groups of symmetrical anchor frame paddles are arranged and welded to form a closed three-dimensional symmetrical structure, which improves the strength and rigidity of the stirring mechanism, ensures the stability of the stirring mechanism and improves the mixing effect and efficiency.
[0016] (2) The present application takes into account the economic processing and stable and reliable stirring work of the thick blade of the inner side screw paddle, the middle screw paddle and the outer side screw paddle, and adopts a processing technology of segmented design, single-section forming and splicing and welding, which reduces the processing difficulty and cost.
[0017] (3) The anchor frame paddle eliminates the stirring dead angle at the two ends of the stirring bin, the W-shaped arc-shaped stirring plate is close to the arc-shaped inner wall at the two ends of the stirring bin, and a large shear force can be obtained along the inner wall surface during rotation, which reduces the adhesion of the inorganic shaving board raw materials to the inner wall surface of the stirring bin, thereby improving the mixing effect.
[0018] (4) The arc-shaped stirring plates at both ends of the stirring bin are provided with wear-resistant rubber scraping plates for the inner walls of the stirring bin at both ends, which are used to adhere to the inner walls of the stirring bin at both ends and scrape off the inorganic glue adhered and remained; the supporting strips in the middle of the stirring bin are provided with wear-resistant rubber scraping plates for the inner walls of the stirring bin in the middle, which are used to adhere to the inner walls of the stirring bin in the middle and scrape off the inorganic glue adhered and remained, so as to ensure that the scraping plates are not easy to wear and are easy to adhere to the bin walls, and can scrape off the inorganic glue adhered and remained and avoid hard friction damage to the bin walls.
[0019] (5) The "cross" structure of the radial connecting rod can contact the raw materials of the inorganic flake board when rotating with the stirring shaft, and can generate a pushing force on the local raw materials, so as to play a role in structure support, power transmission and stirring; the two cutting surfaces of the acute angle edge of the radial connecting rod are designed to be tangent to the outer circumferential surface of the radial connecting rod, so that the radial connecting rod can cut the local raw materials with high viscosity when rotating with the stirring shaft, reduce the resistance received during rotation, and thus improve the stirring efficiency and mixing effect. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a front view of the overall stirring paddle of the embodiment of the present application; Figure 2 It is a perspective view of the radial connecting rod fixed to the stirring shaft in the embodiment of the present application; Figure 3 It is an enlarged perspective view of the radial connecting rod in the embodiment of the present application; Figure 4 It is a perspective view of the inner side spiral paddle fixed to the stirring shaft in the embodiment of the present application; Figure 5 It is a front view of the inner side spiral paddle fixed to the stirring shaft in the embodiment of the present application; Figure 6 It is an exploded view of the inner side spiral paddle in the embodiment of the present application; Figure 7 It is a perspective view of the middle spiral paddle fixed to the stirring shaft in the embodiment of the present application; Figure 8 It is a front view of the middle spiral paddle fixed to the stirring shaft in the embodiment of the present application; Figure 9 It is an exploded view of the middle spiral paddle in the embodiment of the present application; Figure 10 It is a perspective view of the outer side spiral paddle fixed to the stirring shaft in the embodiment of the present application; Figure 11 It is a front view of the outer side spiral paddle fixed to the stirring shaft in the embodiment of the present application; Figure 12 It is an exploded view of the outer side spiral paddle in the embodiment of the present application; Figure 13The installation diagram of the inner wall scraper of the two ends of the stirring bin and the inner wall scraper of the middle part of the stirring bin of the embodiment of the present application; Figure 14 The half sectional view of the inside of the stirring bin of the embodiment of the present application; Figure 15 The overall solid of the mixed stirring device of the embodiment of the present application Figure 1 ; Figure 16 The overall solid of the mixed stirring device of the embodiment of the present application Figure 2 ; The figure mark: 1 stirring paddle, 10 stirring rotating shaft, 101 radial through hole, 11 radial connecting rod, 111 outer side spiral blade paddle connecting part, 112 first blade edge part, 113 middle spiral blade paddle connecting part, 114 second blade edge part, 115 stirring rotating shaft connecting part, 12 inner side spiral blade paddle, 121 inner side spiral blade unit, 13 outer side spiral blade paddle, 131 outer side spiral blade paddle blade, 1311 outer side spiral blade unit, 14 middle spiral blade paddle, 141 middle spiral blade paddle blade, 1411 middle spiral blade unit, 15 anchor frame paddle, 151 arc-shaped stirring plate, 152 inner wall scraper of the two ends of the stirring bin, 16 supporting strip, 17 inner wall scraper of the middle part of the stirring bin, 2 base frame, 3 stirring bin, 4 driving motor, 5 feeding port, 6 temporary storage bin, 7 discharging valve. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.
[0023] Embodiment one As Figures 1-12As shown, a stirring paddle 1 for inorganic particleboard production includes: a stirring shaft 10 for connecting to a power source and driving the stirring paddle to rotate; the outer circumferential surface of the stirring shaft has multiple radial through holes 101 evenly spaced along the axial direction, with the circumferential angle between any two adjacent radial through holes 101 being 90°; radial connecting rods 11, the number of which is twice the number of radial through holes 101; one end of each radial connecting rod 11 is inserted into a radial through hole 101 and fixedly connected to the stirring shaft 10, and the other end is a free end; an inner spiral ribbon paddle 12, which is a right-handed single spiral ribbon, with its inner ring spirally wrapped around and fixedly connected to the outer circumferential surface of the stirring shaft 10; and an outer spiral ribbon. The paddle 13, located outside the inner spiral paddle 12, is a right-handed double spiral paddle, comprising two outer spiral paddle blades 131. The two blades rotate 180° around the axis of the stirring shaft and are arranged in a centrally symmetrical manner. The free end of each radial connecting rod 11 is fixedly connected to the outer spiral paddle blade 131. The middle spiral paddle 14, located between the inner spiral paddle 12 and the outer spiral paddle 13, is a left-handed double spiral paddle, comprising two middle spiral paddle blades 141. The two blades rotate 180° around the axis of the stirring shaft 10 and are arranged in a centrally symmetrical manner. The free end of each radial connecting rod 10 is fixedly connected to the middle spiral paddle blade 141.
[0024] like Figure 14As shown, when the power of the mechanical mixing equipment is transmitted to the mixing shaft 10, the inner spiral blade 12, which is fixedly connected to the outer circumference of the mixing shaft 10, also rotates with the mixing shaft 10. The inner spiral blade 12 is a right-handed single spiral blade, and like a screw conveyor, it generates axial thrust when rotating, causing the raw material of the inorganic particleboard to move axially along the spiral trajectory of the inner spiral blade 12, pushing the raw material of the inorganic particleboard towards the discharge end; the radial connecting rod 11, which is fixedly connected to the mixing shaft 10, rotates around the axis of the mixing shaft 10, causing the outer spiral blade 13 and the middle spiral blade 14, which are fixedly connected to the free end of the radial connecting rod 10, to rotate around the axis of the mixing shaft 10. The outer spiral blade 13 is a right-handed double spiral blade, and the middle spiral blade ( 14) The left-handed double spiral ribbons, when rotating together, will generate three forces on the raw materials of the inorganic particleboard: (1) axial force of bidirectional circulation, (2) radial force of internal and external exchange, and (3) shear force of cross shearing. The axial force makes the raw materials of the inorganic particleboard form a reciprocating circulation in the axial direction, avoid local accumulation, and enhance the overall mixing uniformity. The radial force makes the raw materials of the inorganic particleboard diffuse bidirectionally from the center to the edge and from the edge to the center, strengthens the radial material exchange, reduces radial stratification, and ensures uniform contact in each area during stirring. The shear force is formed when the raw materials of the inorganic particleboard in adjacent areas generate a relative speed difference due to different directions of movement during rotation, forming a cross shear force. At the same time, the friction between the spiral ribbon and the raw materials, and between the raw materials and the inner wall of the equipment will also generate shear, which helps to break up agglomerates and refine the materials. The synergistic effect of these forces makes the raw materials of the inorganic particleboard more efficient in axial circulation, radial mixing and shear refinement, which is suitable for stirring the raw materials of the inorganic particleboard with high viscosity and easy agglomeration, and improves the mixing effect.
[0025] Specifically, such as Figure 2 As shown, the stirring shaft 10 is preferably made of alloy material, which has the advantages of high strength and good mechanical properties. It can also be made of stainless steel. It is preferred to have a diameter of 150 mm and a length of 5200 mm. The diameter of the radial through holes 101 is 50 mm and the number is 11. The distance between any two adjacent radial through holes 101 is 400 mm.
[0026] Specifically, such as Figures 2-4As shown, the radial connecting rod 11 is preferably made of alloy material, which has the advantages of high strength and good mechanical properties. It can also be made of stainless steel. Preferably, the rod body diameter is 50mm, the length is 1500mm, and the number is 22. From its free end to its other end, it includes an outer spiral ribbon paddle connecting part 111 with a length of 170mm, a first cutting edge part 112 with a length of 480mm, an intermediate spiral ribbon paddle connecting part 113 with a length of 190mm, a second cutting edge part 114 with a length of 430mm, and a stirring shaft connecting part 115 with a length of 230mm. The first cutting edge part 112 and the second cutting edge part 114 each include two acute-angled cutting edges symmetrically arranged around the radial connecting rod 11, and the symmetry plane of the two acute-angled cutting edges is coplanar with the axis of the stirring shaft 10. The radial connecting rods 11 are arranged in a "cross" structure. Their main function is to provide structural support and fix the ribbons to the stirring shaft 10, ensuring that each ribbon paddle rotates synchronously with the stirring shaft 10. During stirring, each ribbon paddle needs to drive the movement of the high-viscosity inorganic particleboard material, which generates significant resistance. The "cross" structure stably transmits the torque of the stirring shaft 10 to each ribbon paddle, ensuring that each paddle effectively outputs power to drive the mixing or conveying of the inorganic particleboard material. Furthermore, the "cross" structure of the radial connecting rods 11, when rotating with the stirring shaft 10, comes into contact with the inorganic particleboard material, exerting a pushing force on the material in certain areas. Figure 2 As shown, both cutting surfaces of the acute-angled cutting edge are designed to be tangent to the outer circumferential surface of the radial connecting rod 11. This allows the radial connecting rod 11 to cut high-viscosity local raw materials when it rotates with the stirring shaft 10, reducing the resistance encountered during rotation and improving stirring efficiency and mixing effect.
[0027] Specifically, such as Figures 4-6As shown, the inner spiral blade 12 is composed of 10 inner spiral units 121 spliced and welded together. Each inner spiral unit 121 is a full-circle spiral blade. Every two inner spiral units 121 are in contact with and welded to the stirring shaft connection part 115 of one radial connecting rod 11. The inner spiral blade 12 is preferably made of stainless steel, which has the advantages of corrosion resistance, non-sticking, and durability. Its preferred thickness is 10mm, inner diameter is 150mm, outer diameter is 450mm, pitch is 400mm, transverse width is 150mm, and total axial length is 4000mm. When mechanical mixing equipment mixes inorganic particleboard raw materials, the friction, impact force, and torque generated between the mixing blades and the raw materials are very large. Therefore, thick blades with strong bending and shear resistance are required, with a thickness of not less than 10mm. The method for processing the inner spiral ribbon propeller 12 in the embodiment of the present invention is as follows: (1) Segment design: According to the total axial length, pitch, inner diameter and outer diameter of the spiral ribbon, it is divided into 10 segments. The unfolded size of each segment blank is calculated, and the allowance of a few millimeters for splicing weld is considered; (2) Single segment forming: The stainless steel plate after 10mm is cut into blanks according to the segment design size. The hot bending process is used to bend each segment blank into a right-hand spiral shape to ensure that the pitch and curvature of the single segment are consistent. After the single segment is formed, preliminary correction is performed to obtain the inner spiral ribbon unit 121; (3) Splicing and welding: The inner spiral ribbon units 121 of each segment are placed on the stirring shaft 10 and the radial connecting rod 11 in sequence. The laser tool is used for positioning to ensure that the total pitch and straightness of the spliced part are consistent and the splicing part is tightly fitted. Argon arc welding is used to first spot weld and fix it, and then segment full welding is performed. After welding, the weld is ground to make it smoothly transition with the surface of the spiral ribbon to obtain the right-hand spiral inner spiral ribbon propeller 12.
[0028] Specifically, such as Figures 10-12As shown, the outer spiral blade 131 is formed by splicing and welding 10 outer spiral units 1311. The outer spiral unit 1311 is a quarter-turn spiral blade. Each outer spiral unit 1311 is in contact with and welded to the outer spiral blade connection part 111 of the two radial connecting rods 11. The outer spiral blade 131 is made of stainless steel, which has the advantages of corrosion resistance, non-sticking and durability. Preferably, its thickness is 10mm, inner diameter is 2700mm, outer diameter is 3000mm, pitch is 1600mm, transverse width is 150mm and axial total length is 4000mm. The method for processing the outer spiral blade 131 in the embodiment of the present invention is as follows: (1) Segment design: According to the total axial length, pitch, inner diameter and outer diameter of the spiral, it is divided into 10 segments. The unfolded size of each segment blank is calculated, and the allowance of a few millimeters for splicing weld is considered; (2) Single segment forming: The stainless steel plate after 10mm is cut into blanks according to the segment design size. Each segment blank is bent into a right-hand quarter turn spiral shape by hot bending process to ensure that the pitch and curvature of the single segment are consistent. After the single segment is formed, preliminary correction is performed to obtain the outer spiral unit. 1311; (3) Splicing and welding: Place each section of the outer spiral ribbon unit 1311 on the radial connecting rod 11 in the order of starting and ending angles of 0°-90°, 90°-180°, 180°-270°, and 270°-360°, and make it contact with the outer spiral ribbon propeller connecting part 111. Then, use a laser tool to position it to ensure that the total pitch and straightness of the spliced part are consistent and the splicing part is tightly fitted. Use argon arc welding to first spot weld and then weld in sections. After welding, grind the weld seam to make it smoothly transition with the spiral ribbon surface to obtain the right-handed outer spiral ribbon propeller blade 131.
[0029] Specifically, such as Figures 7-9As shown, the intermediate helical ribbon blade 141 is spliced and welded together from 10 intermediate helical ribbon units 1411. Each intermediate helical ribbon unit 1411 is a quarter-turn helical blade. Each intermediate helical ribbon unit 1411 is in contact with and welded to the intermediate helical ribbon blade connecting part 113 of the two radial connecting rods 11. The intermediate helical ribbon blade 141 is made of stainless steel, which has the advantages of corrosion resistance, non-sticking, and durability. Preferably, its thickness is 10mm, inner diameter is 1360mm, outer diameter is 1680mm, pitch is 1600mm, transverse width is 150mm, and axial total length is 4000mm. The method for processing the intermediate spiral blade 141 in the embodiment of the present invention is as follows: (1) Segment design: According to the total axial length, pitch, inner diameter and outer diameter of the spiral, it is divided into 10 segments. The unfolded size of each segment blank is calculated, and the allowance of a few millimeters for splicing weld is considered; (2) Single segment forming: The stainless steel plate after 10mm is cut into blanks according to the segment design size. The hot bending process is used to bend each segment blank into a left-handed quarter turn spiral shape to ensure that the pitch and curvature of the single segment are consistent. After the single segment is formed, preliminary correction is performed to obtain the intermediate spiral unit. 1411; (3) Splicing and welding: Place the intermediate spiral ribbon units 1411 in the radial connecting rod 11 in the order of starting and ending angles of 0°-90°, 90°-180°, 180°-270°, and 270°-360°, and make them contact the intermediate spiral ribbon propeller connecting part 113. Then, use a laser tool to position them to ensure that the total pitch and straightness of the spliced parts are consistent and that the splicing parts are tightly fitted. Use argon arc welding to first spot weld and then weld the parts in sections. After welding, grind the weld seam to make it smoothly transition with the spiral ribbon surface, and obtain the left-handed intermediate spiral ribbon propeller blade 141.
[0030] When mixing high-viscosity inorganic particleboard raw materials, dead zones still exist at both ends of the mixing chamber, leading to the accumulation of inorganic particleboard raw materials and affecting the mixing effect. Therefore, as... Figure 1 , 13 As shown in Figure 14, anchor frame paddles 15 are designed at both ends of the mixing chamber. Each anchor frame paddle 15 includes four stainless steel arc-shaped stirring plates 151 symmetrically arranged at both ends of the mixing shaft 10. Stainless steel has the advantages of corrosion resistance, non-sticking, and durability. Each arc-shaped stirring plate is welded and fixed to the outermost radial connecting rod 11 of the mixing shaft 10, and the surface of each arc-shaped stirring plate 151 is perpendicular to the outer end face of the mixing shaft 10. The two arc-shaped anchor frame stirring plates 151 located at one end of the mixing shaft 10 form a W shape. The arc-shaped stirring plates 151 are close to the inner arc wall at both ends of the mixing chamber, and a large shearing force is obtained along the inner wall surface during rotation, which can reduce the adhesion of inorganic particleboard raw materials to the inner wall surface of the mixing chamber.
[0031] After mechanical mixing equipment mixes inorganic particleboard raw materials, residual inorganic particleboard material will adhere to the inner wall of the mixing chamber. Over time, this accumulation will cause clumping, affecting subsequent mixing efficiency. Therefore, such as...Figure 1 , 13 As shown in Figure 14, each arc-shaped stirring plate 151 is equipped with a wear-resistant rubber scraper 152 for the inner wall of the mixing chamber at both ends. This scraper is used to adhere to the inner wall of the mixing chamber at both ends and remove any adhering residual inorganic adhesive. Specifically, both the arc-shaped stirring plate 151 and the scrapers 152 for the inner wall of the mixing chamber at both ends have multiple corresponding matching mounting holes. Bolts are used to pass through the corresponding matching mounting holes to fasten the scrapers 152 for the inner wall of the mixing chamber at both ends to the arc-shaped stirring plate 151. The scrapers 152 for the inner wall of the mixing chamber at both ends are made of wear-resistant rubber, ensuring that they are not easily worn and can easily adhere to the chamber wall. This effectively removes any adhering residual inorganic adhesive while avoiding damage to the chamber wall from hard friction.
[0032] After mechanical mixing equipment mixes inorganic particleboard raw materials, residual inorganic particleboard material will adhere to the inner wall of the mixing chamber. Over time, this accumulation will cause clumping, affecting subsequent mixing efficiency. Therefore, such as... Figure 1 , 13 As shown in Figure 14, two support bars 16 symmetrically arranged along the axis of the stirring shaft 10 are provided on both sides of the anchor frame paddle 15. The support bars 16 are made of stainless steel, which has the advantages of corrosion resistance, non-sticking, and durability. They are in contact with and welded to the free ends of all radial connecting rods 11 on the same side. Each support bar 16 is equipped with a wear-resistant rubber scraper 17 for the inner wall of the mixing chamber, which is used to adhere to the inner wall of the mixing chamber and scrape off the adhering inorganic adhesive. Specifically, multiple corresponding matching mounting holes are opened on the support bars 16 and the inner wall scraper 17 of the mixing chamber. Bolts are used to pass through the corresponding matching mounting holes to fasten the inner wall scraper 17 of the mixing chamber to the support bars 16. The inner wall scraper 17 of the mixing chamber is made of wear-resistant rubber, which ensures that it is not easily worn and can easily adhere to the chamber wall, which can both scrape off the adhering inorganic adhesive and avoid damage to the chamber wall by hard friction.
[0033] Example 2 like Figure 15 , 16 As shown, a mixing and stirring device for inorganic particleboard production adopts a stirring paddle 1 for inorganic particleboard production according to Embodiment 1, and further includes: a base frame 2, a mixing chamber 3, a drive motor 4, a feed inlet 5, a temporary storage chamber 6, and a discharge valve 7. The mixing chamber 3 and the drive motor 4 are installed on the top. The top of the mixing chamber 3 is provided with a feed inlet 5. The stirring paddle 1 is installed inside the mixing chamber 3. The bottom of the mixing chamber 3 is provided with a temporary storage chamber 6 and a discharge valve 7. The drive motor 4 is connected to the stirring shaft 10 of the stirring paddle 1 through a reduction mechanism.
[0034] During operation, various raw materials for inorganic particleboard enter the mixing chamber 6 through the feed inlet 5. Then, the drive motor 4 is energized and begins operation, driving the mixing paddle 1 to mix the materials. The mixing paddle 1 performs reciprocating motion, rotation, and scattering actions. After mixing is complete, the mixture in the mixing chamber 3 enters the temporary storage chamber 6 through a pneumatic valve to await discharge. After the pneumatic valve closes, the mixing chamber 3 is fed and mixed again. The material in the temporary storage chamber 6 is then discharged through the discharge valve 7 according to the needs of the next stage.
[0035] The present invention provides a stirring paddle and mixing device for the production of inorganic particleboard, which has at least the following beneficial effects: (1) The present invention designs and arranges a stirring shaft, a radial connecting rod of a "cross", an inner spiral blade of a right-handed single spiral blade, an outer spiral blade of a right-handed double spiral blade, a middle spiral blade of a left-handed double spiral blade, and two sets of symmetrical anchor frame blades, which are welded together to form a closed three-dimensional symmetrical structure. This improves the strength and rigidity of the stirring mechanism, ensures the stability of the stirring mechanism, and thus improves the mixing effect and efficiency. At the same time, this design arrangement causes the inorganic particleboard raw material to be subjected to the triple action of bidirectional circulating axial force, internal and external exchange radial force, and cross shear force in the mixing chamber, thereby forming a complex three-dimensional flow path and achieving rapid mixing without dead angles and with full uniformity.
[0036] (2) This invention takes into account both the economic efficiency of processing the inner, middle and outer spiral blades of the thick blades and the stability and reliability of the mixing operation. The processing technology of segmented design, single-segment molding and splicing welding reduces the processing difficulty and cost. At the same time, all the splicing points of the spiral blades are welded to the radial connecting rods of the "cross" structure for structural support, which ensures the stability of all the spiral blades. During the mixing process, the blades can operate smoothly for a long time and are not easily deformed or damaged, thereby reducing the production and maintenance costs.
[0037] (3) The anchor frame paddle designed in this invention eliminates the dead angles of mixing at both ends of the mixing chamber. Its W-shaped arc-shaped mixing plate is close to the inner arc wall of the mixing chamber at both ends. When rotating, it can obtain a large shear force along the inner wall surface, which reduces the adhesion of inorganic particleboard raw materials to the inner wall surface of the mixing chamber, thereby improving the mixing effect.
[0038] (4) The present invention has wear-resistant rubber scrapers on the arc-shaped mixing plates at both ends of the mixing chamber for adhering to the inner walls of both ends of the mixing chamber and scraping off the adhering residual inorganic glue; and wear-resistant rubber scrapers on the inner wall of the middle of the mixing chamber are installed on the support strip in the middle of the mixing chamber for adhering to the inner wall of the middle of the mixing chamber and scraping off the adhering residual inorganic glue. Both are to ensure that the mixing chamber is not easily worn and can easily adhere to the chamber wall, so as to not only scrape off the adhering residual inorganic glue, but also avoid hard friction damage to the chamber wall.
[0039] (5) When the radial connecting rod of the present invention rotates with the stirring shaft, it will come into contact with the raw material of the inorganic particleboard and exert a pushing force on the local raw material. It not only plays the role of structural support and power transmission, but also plays the role of stirring. The two cutting surfaces of the acute angle edge of the radial connecting rod are designed to be tangent to the outer peripheral surface of the radial connecting rod. In this way, when the radial connecting rod rotates with the stirring shaft, it can cut the high viscosity local raw material, reduce the resistance encountered during rotation, and thus improve the stirring efficiency and mixing effect.
[0040] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0041] In this document, the directional terms such as front, back, top, bottom, left, right, top, and bottom are defined according to the positions of the components in the accompanying drawings and the positions between the components, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.
[0042] Where there is no conflict, the embodiments and features described above can be combined with each other. The above descriptions are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural modifications made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.
Claims
1. A mixing paddle for inorganic particleboard production, characterized in that, include: A stirring shaft (10) is used to connect to a power source and drive the stirring paddle to rotate. The outer circumferential surface of the stirring shaft has multiple radial through holes (101) evenly spaced along the axial direction, and the circumferential angle between any two adjacent radial through holes (101) is 90°. The number of radial connecting rods (11) is twice the number of radial through holes (101). One end of each radial connecting rod (11) is inserted into the radial through hole (101) and fixedly connected to the stirring shaft (10), while the other end is a free end. The inner spiral blade (12) is a right-handed single spiral blade, with the inner ring spirally wrapped around and fixedly connected to the outer circumference of the stirring shaft (10); The outer spiral blade (13) is located outside the inner spiral blade (12). It is a right-handed double spiral blade and includes two outer spiral blades (131). The two blades are symmetrically arranged around the axis of the stirring shaft (10), and the free end of each radial connecting rod (11) is fixedly connected to the outer spiral blade (131). The intermediate spiral blade (14) is located between the inner spiral blade (12) and the outer spiral blade (13). It is a left-handed double spiral blade and includes two intermediate spiral blades (141). The two blades are symmetrically arranged around the axis of the stirring shaft (10), and the free end of each radial connecting rod (10) is fixedly connected to the intermediate spiral blade (141).
2. The mixing paddle for inorganic particleboard production according to claim 1, characterized in that, The radial connecting rod (11) includes, from its free end to its other end, an outer spiral blade connecting part (111), a first cutting edge part (112), an intermediate spiral blade connecting part (113), a second cutting edge part (114), and a stirring shaft connecting part (115). The first cutting edge part (112) and the second cutting edge part (114) each include two acute-angled cutting edges symmetrically arranged around the radial connecting rod (11) in the circumference, and the symmetry plane of the two acute-angled cutting edges is coplanar with the axis of the stirring shaft (10).
3. The mixing paddle for inorganic particleboard production according to claim 2, characterized in that, The inner spiral blade (12) is formed by splicing and welding together multiple inner spiral units (121). The inner spiral unit (121) is a full-circle spiral blade. Every two inner spiral units (121) are in contact with and welded to the stirring shaft connection part (115) of one radial connecting rod (11).
4. The mixing paddle for inorganic particleboard production according to claim 2, characterized in that, The outer spiral blade (131) is formed by splicing and welding together multiple outer spiral units (1311). The outer spiral unit (1311) is a quarter-turn spiral blade. Each outer spiral unit (1311) is in contact with and welded to the outer spiral blade connection part (111) of the two radial connecting rods (11).
5. The mixing paddle for inorganic particleboard production according to claim 2, characterized in that, The intermediate spiral blade (141) is formed by splicing and welding together multiple intermediate spiral units (1411). The intermediate spiral unit (1411) is a quarter-turn spiral blade. Each intermediate spiral unit (1411) is in contact with and welded to the intermediate spiral blade connection part (113) of the two radial connecting rods (11).
6. A mixing paddle for inorganic particleboard production according to any one of claims 1-6, characterized in that, It also includes an anchor frame paddle (15), which includes four arc-shaped stirring plates (151) symmetrically arranged at both ends of the stirring shaft (10). Each arc-shaped stirring plate is welded and fixed to the radial connecting rod (11) on the outermost axis of the stirring shaft (10), and the plate surface of each arc-shaped stirring plate (151) is perpendicular to the outer end face of the stirring shaft (10). The two arc-shaped anchor frame stirring plates (151) located at one end of the stirring shaft (10) form a W shape.
7. The mixing paddle for inorganic particleboard production according to claim 6, characterized in that, Each of the aforementioned arc-shaped mixing plates (151) is equipped with a wear-resistant rubber scraper (152) for the inner wall of the mixing chamber at both ends, which is used to fit the inner wall of the mixing chamber at both ends and scrape off the adhering inorganic adhesive residue.
8. A mixing paddle for inorganic particleboard production according to claim 7, characterized in that, The anchor frame paddle (15) has two support bars (16) symmetrically arranged along the axis of the stirring shaft (10) on both sides. The support bars (16) are in contact with and welded to the free ends of all the radial connecting rods (11) on the same side. Each support bar (16) is equipped with a wear-resistant rubber scraper (17) for the inner wall of the stirring chamber, which is used to fit the inner wall of the stirring chamber and scrape off the inorganic glue residue.
9. A mixing and stirring device for the production of inorganic particleboard, characterized in that, The mixing paddle (1) for inorganic particleboard production as described in claim 1 further includes: a base frame (2), on the top of which a mixing chamber (3) and a drive motor (4) are installed; the top of the mixing chamber (3) is provided with a feed inlet (5); the mixing paddle (1) is installed inside the mixing chamber (3); the bottom of the mixing chamber (3) is provided with a temporary storage chamber (6) and a discharge valve (7); and the drive motor (4) is connected to the mixing shaft (10) of the mixing paddle (1) through a reduction mechanism.