A centrifugal material dividing equipment for building materials

Abstract

A centrifugal material distribution equipment for building materials, comprising an outer cylinder, an inner blocking screening cylinder, a centrifugal distribution rotor, and a rotating shaft; the centrifugal distribution rotor comprises a plurality of multi-section blades arranged circumferentially along the outer circumference of the rotating shaft; the multi-section blades are thick at both ends and thin in the middle, and the structure changes gradually; the multi-section blades comprise arc-shaped gradually thinning guide blades, constant thickness blades, and gradually thickening outlet blades connected in sequence in the radial direction; and the bending directions of the blades change alternately; one end of the constant thickness blade is elastically connected to the gradually thinning guide blade, and the other end is fixedly connected to the gradually thickening outlet blade at the end. When the material passes through each section of the blade, centrifugal forces of different sizes and directions are generated, so that the movement trajectory of the material interacts between different blades, improving the problem of uneven centrifugal force near the center and edge of the centrifugal distribution rotor, and effectively separating materials of different densities or particle sizes; thereby improving the sorting effect.

Description

Technical Field

[0001] The invention relates to the technical field of material processing, in particular to a centrifugal material dividing device for building materials. Background Art

[0002] Centrifugal separators play an important role in the field of material handling technology and are widely used in various separation needs in industry, construction and production processes. Centrifugal separators usually consist of a rotating rotor and blades mounted on the rotor. When the mixture enters the rotating rotor, the centrifugal force separates particles of different densities or sizes. Especially in the construction industry, centrifugal separators are particularly important for the classification and screening of various building materials. Building materials such as sand, cement, concrete, gypsum board, etc. need to be finely graded during production and processing to ensure the quality and performance of the final product.

[0003] Existing centrifugal material separation equipment uses a classifier to classify materials into a variety of different particle sizes. This method is simple in structure and effective; however, for some larger centrifugal material separation equipment, especially when the eccentric wheel has a longer axial range, the eccentric wheel near the edge, that is, the radial 2 / 3~3 / 4 partial channel will be subject to a greater centrifugal force, while the channel near the center will be subject to a smaller centrifugal force; resulting in greater turbulence in the radial 2 / 3~3 / 4 partial channel of the eccentric wheel. The generation of turbulence will affect the flow of materials, making the flow of materials in the partial channels near the edge irregular or uneven, thereby reducing the sorting effect. Therefore, it is necessary to optimize the blade structure on the eccentric wheel to achieve more uniform material sorting.

[0004] At present, most centrifugal material separation equipment adopts arc-shaped blades to reduce the resistance of fluid or gas passing through, thereby reducing the generation of turbulence and the possibility of uneven flow. Some also reduce the gap between blades. Although a smaller gap can control the flow of fluid or gas and reduce the generation of turbulence, reducing the gap makes the passage of fluid or gas smaller, increases its resistance, and thus reduces the screening speed.

[0005] In order to solve this problem, it is very necessary to optimize the blade structure on the eccentric wheel. By optimizing the blade structure, the flow characteristics in the channel are improved, the generation of turbulence is reduced, and the flow of materials in the channel is made more uniform and stable, which is the improvement direction of the present invention. Summary of the invention

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

[0007] A centrifugal material distribution equipment for building materials, mainly comprising: an outer cylinder, an inner blocking and screening cylinder, a centrifugal material distribution rotor, and a rotating shaft; the outer cylinder, the inner blocking and screening cylinder, and the centrifugal material distribution rotor are coaxial; a gap is maintained between the outer surface of the inner blocking and screening cylinder and the inner surface of the outer cylinder; the centrifugal material distribution rotor is arranged at the center of the inner blocking and screening cylinder; one end of the rotating shaft is connected to the centrifugal material distribution rotor, and the other end is connected to a driving mechanism;

[0008] Furthermore, the centrifugal material distribution rotor mainly includes: a rotor chassis, a rotor upper cover plate, and a plurality of multi-segment blades arranged circumferentially along the outer circumference of the rotating shaft;

[0009] Furthermore, the multi-section blades extend in a vertical direction, and the multi-section blades are arranged between the rotor upper cover plate and the rotor bottom plate;

[0010] Furthermore, the multi-stage blades include: gradually thinning guide blades, constant thickness blades, and gradually thickening outlet blades at the end, which are sequentially arranged in the radial direction of the centrifugal material distribution rotor;

[0011] Furthermore, the gradually thinning guide blades, the blades with constant thickness, and the gradually thickening outlet blades at the end are all in arc shape, and the bending directions of the blades are changed alternately;

[0012] Furthermore, the curvature radius of the gradually thinning guide blade is the same as the curvature radius of the gradually thickening outlet blade at the end; the curvature radius of the gradually thinning guide blade is greater than the curvature radius of the blade with constant thickness;

[0013] Furthermore, one end of the constant thickness blade is elastically connected to the gradually thinning guide blade; the other end of the constant thickness blade is fixedly connected to the terminal gradually thickening outlet blade.

[0014] Furthermore, the thickness of the gradually thinning guide blade gradually decreases in the direction of the blade with constant thickness; the gradually thinning guide blade comprises: a thick wall starting end, a thin wall connecting end, a limiting protrusion, and a limiting groove;

[0015] Furthermore, the radial distance between the thick wall starting end and the thin wall connecting end is H2, and the radial length of the multi-section blade is H1; H2=(2 / 3~3 / 4)H1;

[0016] Furthermore, a limiting groove is provided on the convex surface near the thin-walled connecting end; the limiting groove is adapted to a portion of the convex surface on the elastic connecting end of the blade with constant thickness;

[0017] Furthermore, a limiting protrusion extending toward the blade with constant thickness is also provided on the thin-walled connecting end; the limiting protrusion is a component having any one of a square, rectangular, triangular or circular cross section;

[0018] Furthermore, the limiting protrusion extends in the vertical direction to the same height as the tapered guide blade.

[0019] Furthermore, the constant thickness blade comprises: an elastic connection end, a fixed connection end, and an elastic connection member;

[0020] Furthermore, the elastic connection end is connected to the thin-wall connection end of the gradually thinning guide blade through an elastic connection piece; and there is a minimum distance between the elastic connection end and the convex surface of the gradually thinning guide blade;

[0021] Furthermore, the fixed connection end is fixedly connected to the gradually thickened lead-out blade at the end;

[0022] Furthermore, the thickness of the elastic connection end and the fixed connection end is the same; that is, the thickness of the constant thickness blade is constant;

[0023] Further, the constant thickness blade is made of a material having elastic properties;

[0024] Furthermore, the elastic connecting member is located between the limiting groove and the limiting protrusion, and there is at least one elastic connecting member in the vertical direction.

[0025] Furthermore, the thickness of the gradually thickened leading-out blade gradually decreases in the direction of the blade with constant thickness; the gradually thickened leading-out blade has a thick-walled tip;

[0026] Furthermore, the end of the thick wall is far away from the blade with constant thickness and is located at the outer peripheral edge of the centrifugal material distribution rotor.

[0027] Furthermore, the bottom of the outer cylinder is a hopper-shaped, wide-upper-narrow-lower fine material drop portion; a fine material discharge port is provided at the bottom of the fine material drop portion;

[0028] Furthermore, the inner blocking sub-screen cylinder comprises: a porous cylinder, a coarse material drop portion located at the bottom of the porous cylinder;

[0029] Furthermore, the bottom of the coarse material blanking portion has a coarse material discharge port extending to the outside of the fine material blanking portion;

[0030] Furthermore, the coarse material blanking portion is also in a cone shape that is wide at the top and narrow at the bottom; the taper angle of the coarse material blanking portion is a, and the taper angle of the fine material blanking portion is b, where a<b;

[0031] Furthermore, a plurality of sieve holes are evenly arranged on the surface of the porous cylinder;

[0032] The inner blocking sub-screen cylinder is further fixed in the outer cylinder body through a supporting member.

[0033] Furthermore, an upper cover is provided on the upper part of the outer cylinder; a plurality of slots are provided on the lower surface of the upper cover to achieve sealed connection with the outer cylinder and the top end of the inner blocking sub-screen cylinder;

[0034] Furthermore, a feed port is provided on the upper cover body; the rotating shaft passes through the upper cover body and is connected to a driving mechanism having a pulley;

[0035] Furthermore, a wear-resistant ring is provided at the part of the rotating shaft that contacts the material.

[0036] The beneficial effects of the present invention are as follows:

[0037] The present invention provides a centrifugal material separation device for building materials. By adopting arc-shaped multi-section blades, the bending direction of each section of the blade changes alternately, and the multi-section blades have different curvature radii and different radial lengths; when the material passes through each section of the blade, centrifugal forces of different sizes are generated, so that the movement trajectory of the material interacts between different blades, thereby improving the problem of uneven centrifugal forces on the central part and the edge part of the centrifugal material separation rotor, reducing the generation of turbulence at the edge part of the centrifugal material separation rotor, and effectively separating materials of different densities or particle sizes; thereby making the material flow more stable and improving the sorting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The present invention is a schematic diagram of the overall structure of a centrifugal material distribution equipment for building materials.

[0039] Figure 2 It is a schematic diagram of the top view of the centrifugal material distribution rotor.

[0040] Figure 3 for Figure 2 Enlarged view of Q in .

[0041] Figure 4 for Figure 2 Enlarged view of point P in .

[0042] Figure 5 Schematic diagram of the elastic connector under stress.

[0043] Figure 6 A partial schematic diagram of the elastic connection end.

[0044] In the figure: 1. outer cylinder; 11. fine material discharge part; 111. fine material discharge port; 2. inner blocking screening cylinder; 21. porous cylinder; 22. coarse material discharge part; 221. coarse material discharge port; 3. centrifugal material distribution rotor; 31. multi-stage blades; 32. rotor upper cover plate; 321. feed connection port; 33. rotor chassis; 311. gradually thinning guide blades; 3111. thick wall starting end; 3112. thin wall connecting end; 3113. limiting protrusion; 3114. limiting groove; 312. constant thickness blade; 3121. elastic connecting end; 3122. fixed connecting end; 3123. elastic connecting piece; 313. gradually thickening lead-out blades at the end; 3131. thick wall end; 4. rotating shaft; 5. feed port; 6. upper cover body. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0046] Please refer to the attached Figure 1-6 A centrifugal material distribution equipment for building materials mainly comprises: an outer cylinder 1, an inner blocking screening cylinder 2, a centrifugal material distribution rotor 3, and a rotating shaft 4; the outer cylinder 1, the inner blocking screening cylinder 2, and the centrifugal material distribution rotor 3 are coaxial; a gap is maintained between the outer surface of the inner blocking screening cylinder 2 and the inner surface of the outer cylinder 1; the centrifugal material distribution rotor 3 is arranged at the center of the inner blocking screening cylinder 2; one end of the rotating shaft 4 is connected to the centrifugal material distribution rotor 3, and the other end is connected to the driving mechanism;

[0047] Furthermore, the centrifugal material distribution rotor 3 mainly includes: a rotor chassis 33, a rotor upper cover 32, and a plurality of multi-segment blades 31 arranged circumferentially along the outer circumference of the rotating shaft 4;

[0048] The multi-section blade 31 extends in the vertical direction, and the multi-section blade 31 is arranged between the rotor upper cover plate 32 and the rotor bottom plate 33;

[0049] The multi-stage blades 31 include: a gradually thinning guide blade 311, a blade 312 of constant thickness, and a gradually thickening outlet blade 313 at the end, which are sequentially arranged in the radial direction of the centrifugal material distribution rotor 3;

[0050] The gradually thinning guide blade 311, the constant thickness blade 312, and the gradually thickening outlet blade 313 at the end are all in arc shape, and the bending direction of each blade changes alternately; specifically, the bending direction of the gradually thinning guide blade 311 and the gradually thickening outlet blade 313 at the end is the same as the rotation direction of the centrifugal distribution rotor 3, and the bending direction of the constant thickness blade 312 is opposite to the rotation direction of the centrifugal distribution rotor 3;

[0051] The curvature radius of the gradually thinning guide vane 311 is the same as the curvature radius of the gradually thickening outlet vane 313 at the end;

[0052] The curvature radius of the gradually thinning guide vane 311 is greater than the curvature radius of the constant thickness vane 312;

[0053] One end of the constant thickness blade 312 is elastically connected to the gradually thinning guide blade 311;

[0054] The other end of the constant thickness blade 312 is fixedly connected to the terminal gradually thickening outlet blade 313 .

[0055] Furthermore, the thickness of the gradually thinning guide blade 311 gradually decreases toward the direction of the blade 312 with constant thickness; the gradually thinning guide blade 311 includes: a thick wall starting end 3111, a thin wall connecting end 3112, a limiting protrusion 3113, and a limiting groove 3114;

[0056] The radial distance between the thick wall starting end 3111 and the thin wall connecting end 3112 is H2, and the radial length of the multi-section blade 31 is H1; H2=(2 / 3~3 / 4)H1;

[0057] A limiting groove 3114 is provided on the convex surface near the thin-walled connecting end 3112; the limiting groove 3114 is adapted to a portion of the convex surface on the elastic connecting end 3121 of the constant-thickness blade 312; when the material collides with the constant-thickness blade 312 under the action of centrifugal force, so that the elastic connecting end 3121 of the constant-thickness blade 312 is displaced or deformed, a portion of the convex surface on the elastic connecting end 3121 near the constant-thickness blade 312 abuts against the limiting groove 3114, providing sufficient change space for it;

[0058] A limiting protrusion 3113 extending toward the constant thickness blade 312 is also provided on the thin-walled connecting end 3112; the limiting protrusion 3113 is a component having any one of a square, rectangular, triangular or circular cross section; under the action of centrifugal force, the material impacts the surface of the constant thickness blade 312, causing the elastic connecting end 3121 of the constant thickness blade 312 to be displaced or deformed, and the limiting protrusion 3113 limits the displacement range of the elastic connecting end 3121 of the constant thickness blade 312, providing a stable limit position for it, so as to limit excessive deformation, and help reduce the possibility of the constant thickness blade 312 being damaged due to severe deformation;

[0059] The limiting protrusion 3113 extends in the vertical direction to the same height as the gradually thinning guide blade 311;

[0060] By combining the limiting groove 3114 and the limiting protrusion 3113 , the constant thickness blade 312 can maintain a relatively stable position when impacted and squeezed by the material, thereby reducing the instability and vibration of the entire centrifugal distribution rotor 3 .

[0061] The bending direction of the gradually thinning guide blade 311 is the same as the rotation direction of the centrifugal material distribution rotor 3. The material will be collected and guided by the concave surface of the gradually thinning guide blade 311, and will be subjected to a greater centrifugal force at the thick wall starting end 3111, so that larger material particles are more easily separated.

[0062] Furthermore, the constant thickness blade 312 includes: an elastic connection end 3121, a fixed connection end 3122, and an elastic connection member 3123;

[0063] The elastic connection end 3121 is connected to the thin-wall connection end 3112 of the gradually thinning guide blade 311 through an elastic connection piece 3123; and there is a minimum distance between the elastic connection end 3121 and the convex surface of the gradually thinning guide blade 311;

[0064] The fixed connection end 3122 is fixedly connected to the gradually thickened leading-out blade 313 at the end;

[0065] The thickness of the elastic connection end 3121 and the fixed connection end 3122 is the same, that is, the thickness of the constant-thickness blade 312 is constant, making the centrifugal force generated during high-speed rotation more stable, avoiding remixing of materials during the separation process, and further improving the separation effect.

[0066] The constant thickness blade 312 is made of a material with elastic properties, such as rubber material, composite material, polymer material. When the large particle material contacts the constant thickness blade 312, a greater inertial force will be generated to press the constant thickness blade 312. The elastic material of the constant thickness blade 312 can absorb and alleviate the collision, prevent the large particle material from rebounding violently, and make the large particle material move more smoothly toward the outside of the centrifugal material distribution rotor 3 as it rotates.

[0067] The elastic connecting member 3123 is located between the limiting groove 3114 and the limiting protrusion 3113, and there is at least one elastic connecting member 3123 in the vertical direction;

[0068] The elastic connecting member 3123 may be a component made of a spring, an elastic pin, a rubber sleeve or the like, and has a certain elasticity to absorb vibration or withstand deformation.

[0069] As attached Figure 5 As shown, when the constant thickness blade 312 is squeezed by the material, the elastic connecting end 3121 moves toward the limiting groove 3114 of the gradually thinning guide blade 311 until it contacts the limiting protrusion 3113 and stops; in this process, the elastic connecting member 3123 quickly releases elastic energy, so that the elastic connecting end 3121 returns to its original position, avoiding damage caused by material impact and helping to protect the integrity of the entire blade structure.

[0070] Furthermore, the thickness of the gradually thickened leading blade 313 gradually decreases in the direction of the blade 312 with constant thickness; the gradually thickened leading blade 313 has a thick-walled end 3131;

[0071] The thick wall end 3131 is away from the constant thickness blade 312 and is located at the outer peripheral edge of the centrifugal material distribution rotor 3;

[0072] The thick-walled end 3131 is relatively thick, and the centrifugal force generated gradually increases, thereby accelerating the discharge of the material from the centrifugal material distribution rotor 3.

[0073] During high-speed rotation, the material flows smoothly from the gradually thinning guide blade 311 to the constant thickness blade 312; the constant thickness blade 312 continues to push the separated larger material particles to the convex surface of the constant thickness blade 312 opposite to it; under the clamping of the constant thickness blade 312, the material is accelerated by the greater inertia and centrifugal force to move toward the concave surface of the terminal gradually thickening outlet blade 313 and is discharged outward; this alternating arrangement of motion trajectories and the interaction of materials between different blades further promote the formation of a vortex effect, which helps to effectively separate materials of different densities or particle sizes.

[0074] Furthermore, the bottom of the outer cylinder 1 is a conical fine material drop portion 11 which is wide at the top and narrow at the bottom; a fine material discharge port 111 is provided at the bottom of the fine material drop portion 11;

[0075] The inner blocking sub-screen cylinder 2 comprises: a porous cylinder 21, and a coarse material drop portion 22 located at the bottom of the porous cylinder 21;

[0076] The bottom of the coarse material discharge portion 22 has a coarse material discharge port 221 extending to the outside of the fine material discharge portion 11;

[0077] The rough material blanking portion 22 is also in a cone shape that is wide at the top and narrow at the bottom;

[0078] The taper angle of the coarse material blanking portion 22 is a, and the taper angle of the fine material blanking portion 11 is b; a<b;

[0079] The surface of the porous cylinder 21 is evenly arranged with a plurality of sieve holes (not shown in the figure); the shape of the sieve holes can be mesh-shaped, circular-hole-shaped, polygonal-shaped, etc.; the porous cylinder 21 and the rough material blanking part 22 can be integrally formed;

[0080] The inner blocking sub-screen cylinder 2 is further fixed in the outer cylinder body 1 through a support member.

[0081] The centrifugal material distribution rotor 3 rotates at a high speed, generating a strong centrifugal force and forming an airflow; under the action of the centrifugal force, the material particles with larger diameters are quickly thrown out and fall into the inner blocking screening cylinder 2, while the smaller material particles move upward with the airflow and are further acted upon by the centrifugal force, and are thrown out of the centrifugal material distribution rotor 3 and pass through the porous cylinder 21. Under the obstruction of the outer cylinder body 1, they fall into the fine material dropping part 11 and are discharged from the fine material discharge port 111.

[0082] Furthermore, a connecting through hole is provided at the center of the rotor chassis 33, and the rotating shaft 4 passes through the connecting through hole and is connected and fixed to the rotor chassis 33;

[0083] A center hole is provided at the center of the rotor upper cover plate 32 and is connected and fixed to the rotating shaft 4 by bolts, pins or other connecting parts, not shown in the figure; a feed connecting port 321 connected to the feed port 5 is also provided around the center hole.

[0084] Furthermore, an upper cover 6 is provided on the upper part of the outer cylinder 1 ; a plurality of slots are provided on the lower surface of the upper cover 6 to achieve sealed connection with the outer cylinder 1 and the top end of the inner blocking sub-screen cylinder 2 .

[0085] A feed port 5 is also provided on the upper cover body 6; the rotating shaft 4 passes through the upper cover body 6 and is connected to a driving mechanism having a pulley.

[0086] Furthermore, a wear-resistant ring is provided at the portion of the rotating shaft 4 that contacts the material.

[0087] Specific working method: start the driving mechanism, so that the rotating shaft 4 drives the centrifugal material distribution rotor 3 to rotate at high speed, generating a strong centrifugal force. Under the action of the centrifugal force, the surrounding air also rotates together to form an airflow.

[0088] The material to be separated enters the centrifugal distribution rotor 3 from the feed inlet 5. With the high-speed rotation of the centrifugal distribution rotor 3, the material is dispersed. The material first passes through the flow channel formed by the concave surfaces of multiple adjacent tapered guide blades 311. In this flow channel, the flow rate of the material is relatively stable. Small particles or lighter materials are driven upward by the airflow and are further subjected to the centrifugal force in the centrifugal distribution rotor 3; while large particles or heavier materials are quickly thrown out due to the large inertia under the action of centrifugal force, and continue to flow to the outer peripheral edge of the centrifugal separation rotor 3; after these materials leave the flow channel formed by the concave surfaces of the tapered guide blades 311, the closer they are to the outer peripheral edge of the centrifugal distribution rotor 3, the gradually increasing centrifugal force causes the flow between the materials to produce more and more turbulence, affecting the stable flow between the material particles. Under the action of the elastic connector 3123, large particles or heavier materials smoothly transfer to the convex surface of the blade 312 with constant thickness opposite to it, and finally flow to the outer peripheral edge of the centrifugal material distribution rotor 3 as the leading blade 313 with gradually thickening at the end rotates, falls into the inner blocking sub-screen cylinder 2, and is discharged from the coarse material discharge port 221. Small particles or lighter materials are further thrown out at the upper position in the centrifugal material distribution rotor 3 with the air flow, and pass through the porous cylinder 21 of the inner blocking sub-screen cylinder 2, and fall into the fine material drop portion 11 under the obstruction of the outer cylinder 1, and are discharged from the fine material discharge port 111.

[0089] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A centrifugal material distribution equipment for building materials, mainly comprising: An outer cylinder (1), an inner blocking sieve cylinder (2), a centrifugal material distribution rotor (3), and a rotating shaft (4); the outer cylinder (1), the inner blocking sieve cylinder (2), and the centrifugal material distribution rotor (3) are coaxial; a gap is maintained between the outer surface of the inner blocking sieve cylinder (2) and the inner surface of the outer cylinder (1); the centrifugal material distribution rotor (3) is arranged at the center of the inner blocking sieve cylinder (2); one end of the rotating shaft (4) is connected to the centrifugal material distribution rotor (3), and the other end is connected to a driving mechanism; the characteristics are: The centrifugal material distribution rotor (3) mainly comprises: a rotor base plate (33), a rotor upper cover plate (32), and a plurality of multi-segment blades (31) arranged in a circumferential direction along the outer circumference of the rotating shaft (4); The multi-segment blade (31) extends in a vertical direction, and the multi-segment blade (31) is arranged between a rotor upper cover plate (32) and a rotor bottom plate (33); The multi-stage blades (31) comprise: a gradually thinning guide blade (311), a blade with a constant thickness (312), and a gradually thickening outlet blade (313) at the end, which are sequentially arranged in the radial direction of the centrifugal material distribution rotor (3); The gradually thinning guide blades (311), the blades with constant thickness (312), and the gradually thickening outlet blades (313) at the end are all in arc shapes, and the bending directions of the blades change alternately; The curvature radius of the gradually thinning guide blade (311) is the same as the curvature radius of the gradually thickening outlet blade (313) at the end; The curvature radius of the gradually thinning guide blade (311) is greater than the curvature radius of the blade (312) with constant thickness; One end of the blade (312) with constant thickness is elastically connected to the gradually thinning guide blade (311); The other end of the blade (312) with constant thickness is fixedly connected to the end gradually thickening lead-out blade (313); The thickness of the gradually thinning guide blade (311) gradually decreases in the direction of the blade (312) with constant thickness; the gradually thinning guide blade (311) comprises: a thick-walled starting end (3111), a thin-walled connecting end (3112), a limiting protrusion (3113), and a limiting groove (3114); The radial distance between the thick wall starting end (3111) and the thin wall connecting end (3112) is H2, and the radial length of the multi-section blade (31) is H1; H2 = (2 / 3~3 / 4) H1; A limiting groove (3114) is provided on the convex surface near the thin-walled connecting end (3112); the limiting groove (3114) is adapted to a portion of the convex surface on the elastic connecting end (3121) of the blade (312) with constant thickness; A limiting protrusion (3113) extending towards the blade (312) with constant thickness is also provided on the thin-walled connecting end (3112); the limiting protrusion (3113) is a component having any one of a square, rectangular, triangular or circular cross section.

2. A centrifugal material distribution equipment for building materials according to claim 1, characterized in that: The limiting protrusion (3113) extends in the vertical direction to the same height as the gradually thinning guide blade (311).

3. A centrifugal material distribution equipment for building materials according to claim 2, characterized in that: The constant thickness blade (312) comprises: an elastic connection end (3121), a fixed connection end (3122), and an elastic connection piece (3123); The elastic connection end (3121) is connected to the thin-wall connection end (3112) of the gradually thinning guide blade (311) through an elastic connection piece (3123); and there is a minimum distance between the elastic connection end (3121) and the convex surface of the gradually thinning guide blade (311); The fixed connection end (3122) is fixedly connected to the gradually thickened lead-out blade (313) at the end.

4. A centrifugal material distribution equipment for building materials according to claim 3, characterized in that: The elastic connection end (3121) and the fixed connection end (3122) have the same thickness; that is, the thickness of the constant-thickness blade (312) is constant; The constant thickness blade (312) is made of a material having elastic properties; The elastic connecting member (3123) is located between the limiting groove (3114) and the limiting protrusion (3113), and there is at least one elastic connecting member (3123) in the vertical direction.

5. A centrifugal material distribution equipment for building materials according to claim 4, characterized in that: The thickness of the gradually thickened leading-out blade (313) gradually decreases in the direction of the blade (312) with constant thickness; the gradually thickened leading-out blade (313) has a thick-walled end (3131); The thick wall end (3131) is away from the constant thickness blade (312) and is located at the outer peripheral edge of the centrifugal material distribution rotor (3).

6. A centrifugal material distribution equipment for building materials according to claim 5, characterized in that: The bottom of the outer cylinder (1) is a conical fine material drop portion (11) which is wide at the top and narrow at the bottom. A fine material discharge port (111) is provided at the bottom of the fine material drop portion (11); The inner blocking sub-screen cylinder (2) comprises: a porous cylinder (21), and a coarse material drop portion (22) located at the bottom of the porous cylinder (21); The bottom of the coarse material discharge portion (22) is provided with a coarse material discharge port (221) extending outside the fine material discharge portion (11); The rough material blanking portion (22) is also in the shape of a cone that is wide at the top and narrow at the bottom; The taper angle of the coarse material blanking portion (22) is a, and the taper angle of the fine material blanking portion (11) is b; a<b; A plurality of sieve holes are evenly arranged on the surface of the porous cylinder (21); The inner blocking sub-screen cylinder (2) is further fixed in the outer cylinder body (1) via a support member.

7. A centrifugal material distribution equipment for building materials according to claim 6, characterized in that: An upper cover (6) is provided on the upper part of the outer cylinder (1); a plurality of slots are provided on the lower surface of the upper cover (6) to achieve sealed engagement with the outer cylinder (1) and the top end of the inner blocking sub-screen cylinder (2); The upper cover body (6) is also provided with a feed inlet (5); The rotating shaft (4) passes through the upper cover body (6) and is connected to a driving mechanism having a pulley; The portion of the rotating shaft (4) that contacts the material is provided with a wear-resistant ring.

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