A high-homogenization anti-segregation dry-mixed mortar step-by-step stirring device and process

Abstract

This invention discloses a stepped mixing device and process for highly homogenized and anti-segregation dry mortar, belonging to the field of dry mortar production technology. The device includes a shell with feet at the bottom. Inside the shell, from top to bottom, a primary mixing component, a suction component, and a secondary mixing component are sequentially connected, forming a three-stage stepped mixing structure. A rotating component driving the secondary mixing component is located on the outside of the shell. This invention effectively solves the segregation problem caused by density and particle size differences in multi-component materials in dry mortar through three-stage stepped mixing of "pre-dispersion, pneumatic homogenization, and deep shearing," significantly improving mortar homogeneity and batch stability, shortening mixing time, and increasing production efficiency. It is suitable for the large-scale production of various types of dry mortar.

Description

Technical Field

[0001] This invention relates to the field of dry mortar production equipment technology, specifically to a stepped mixing device and process for high homogenization and anti-segregation dry mortar. Background Technology

[0002] Dry-mix mortar is a widely used building material in construction projects. It is made by mixing various components such as cement, quartz sand aggregate, adhesive powder, and admixtures in a certain proportion. The homogeneity and anti-segregation performance of the finished product directly determine the mortar's workability, hardening strength, and project quality.

[0003] Currently, most existing dry mortar mixing equipment adopts a single-shaft horizontal or twin-shaft vertical single-stage mixing structure, which has the following defects in actual production: Firstly, there are significant differences in density and particle size between quartz sand aggregate and cementitious materials and admixtures in dry mortar. During single-stage mixing, material segregation is very likely to occur due to gravity stratification, resulting in poor homogeneity of the finished product and insufficient quality stability between batches. Secondly, single-stage mixing makes it difficult to achieve deep dispersion of materials. For functional admixtures with extremely low dosage, it is impossible to ensure their uniform distribution in the entire mortar system, which directly affects the core properties of the mortar such as water retention and bonding strength. Third, in order to achieve uniform mixing, single-stage mixing requires extended mixing time, resulting in low production efficiency and difficulty in meeting the needs of large-scale continuous production of dry mortar.

[0004] Therefore, developing a dry mortar mixing device and process that can achieve multi-stage step mixing, effectively solve the problem of material segregation, and significantly improve homogeneity has important engineering application value. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing single-stage mixing technology, such as easy segregation, poor homogeneity, and low efficiency, and to provide a high-homogeneity, anti-segregation stepped mixing device and process for dry mortar. Through a three-stage stepped mixing system, it achieves step-by-step homogenization treatment of pre-dispersion, pneumatic homogenization, and deep shearing, fundamentally solving the segregation problem of multi-component materials in dry mortar and improving the homogeneity of the finished product and production efficiency.

[0006] A stepped mixing device for high homogenization and anti-segregation dry mortar includes a shell, with feet fixedly installed at the bottom of the shell. The interior of the shell is sealed and connected from top to bottom to form a three-stage stepped mixing structure. A rotating component is fixedly installed on the outside of the shell, and the power output end of the rotating component is connected to the secondary mixing component.

[0007] Preferably, the preliminary stirring component includes an inlet chamber, a first connecting pipe, a dispersion chamber, and a second connecting pipe arranged sequentially from top to bottom; a fixed screen is fixedly installed in the middle of the inner cavity of the inlet chamber, and a plurality of through holes are evenly opened on the plate of the fixed screen; a dispersion mesh plate is horizontally fixedly installed in the inner cavity of the dispersion chamber; the bottom of the inlet chamber is connected to the top of the dispersion chamber through the first connecting pipe, and the bottom of the dispersion chamber is connected to the feed end of the suction component through the second connecting pipe.

[0008] Preferably, the suction component includes a suction housing, a one-way inlet valve is fixedly installed at the top inlet of the suction housing, a one-way exhaust valve is fixedly installed at the bottom outlet of the suction housing, and the bottom end of the second connecting pipe is sealed and connected to the inlet end of the one-way inlet valve; an electric horizontal telescopic rod is horizontally fixedly installed on the side wall of the suction housing, the telescopic end of the electric horizontal telescopic rod extends into the inner cavity of the suction housing and is fixedly connected to a hydraulic plate, and the outer edge of the hydraulic plate slides and seals against the inner wall of the suction housing.

[0009] Preferably, the secondary stirring component includes a fixed internal gear ring, a conical tray, and coaxially arranged inner and outer shear rings. The fixed internal gear ring is fixedly installed on the inner wall of the shell, and several planetary gears mesh on the inner side of the fixed internal gear ring. The centers of the several planetary gears mesh with a drive gear. The bottom of the axle of the planetary gear is fixedly connected to the top surface of the conical tray. Several first guide grooves are opened on the top surface of the conical tray, and the outlet end of the one-way exhaust valve faces the top surface of the conical tray.

[0010] Preferably, a connecting shaft is fixedly connected to the top center of the inner shear ring, and the top end of the connecting shaft is fixedly connected to the center of the drive gear; a plurality of shearing holes are evenly opened on the ring bodies of both the inner and outer shear rings; a plurality of actuating plates are fixedly installed on the outer wall of the inner shear ring and the inner wall of the outer shear ring; the inner and outer shear rings are rotatably installed in the inner cavity of the housing and located below the conical tray.

[0011] Preferably, the rotating component includes a motor bracket, which is fixedly mounted on the outer wall of the housing. A rotating motor is fixedly mounted on the motor bracket. A protective cavity is fixed on the outer wall of the housing corresponding to the position of the rotating motor. The output shaft of the rotating motor extends into the protective cavity and is fixedly connected to a drive gear. An inner shear ring drive gear meshes with one side of the drive gear, and the inner shear ring drive gear is connected to the connecting shaft. An outer shear ring drive gear meshes with the other side of the drive gear, and the outer shear ring drive gear is fixedly connected to the outer wall of the outer shear ring.

[0012] The present invention also provides a stepped mixing process for dry powder mortar with high homogenization and anti-segregation, which is implemented based on the above-mentioned mixing device and includes three stepped mixing steps: pre-dispersion treatment, pneumatic homogenization treatment, and deep shear mixing.

[0013] Beneficial effects Compared with the prior art, the beneficial effects of the present invention are: 1. This invention employs a three-stage stepped mixing system consisting of a preliminary mixing component, a suction component, and a secondary mixing component arranged sequentially from top to bottom. This system achieves step-by-step homogenization through "pre-dispersion, pneumatic homogenization, and deep shear mixing," fundamentally solving the segregation problem caused by differences in density and particle size among the multiple components of dry mortar, and significantly improving the homogeneity and batch stability of the mortar.

[0014] 2. The preliminary stirring component of the present invention adopts a two-stage screen dispersion structure. Through a fixed screen with decreasing aperture gradient and a dispersion mesh plate, the material is first dispersed and pre-dispersed to break up powder agglomeration and large particle clumping, laying the foundation for subsequent homogenization treatment. At the same time, preliminary screening removes impurities and improves the quality of the finished product.

[0015] 3. The suction component of the present invention adopts a pneumatic homogenization structure of negative pressure suction and positive pressure injection. The hydraulic plate is driven to reciprocate by an electric horizontal telescopic rod, so that an alternating positive and negative pressure environment is formed in the suction shell. The pre-dispersed material is sucked in under negative pressure and then ejected at high speed, forming a turbulent pneumatic homogenization in the sealed cavity. This allows materials of different densities to be fully mixed in a suspended state, effectively avoiding segregation and stratification under gravity, and achieving the second stage of homogenization treatment.

[0016] 4. The secondary mixing component of this invention adopts a composite mixing structure of planetary revolution and positive and negative relative shearing. The driving gear drives the revolution gear to perform planetary motion along the fixed inner gear ring. With the help of the actuating plate, the material is turned over and rotated as a whole. At the same time, the inner shear ring and the outer shear ring rotate in opposite directions, forming a high-speed shearing force through the shear hole, which deeply disperses and finely mixes the material, achieving the third-stage deep homogenization. This ensures that the trace additives are evenly distributed in the mortar system, greatly shortens the mixing time, and improves production efficiency. Attached Figure Description

[0017] Figure 1 This is an assembly sectional view of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the discharge valve in this invention. Figure 3 for Figure 2 Enlarged view of the structure at point B in the middle; Figure 4 This is a schematic diagram of the exploded structure of the dispersion cavity in this invention; Figure 5 for Figure 4Enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the structure of the electric horizontal telescopic rod in this invention; Figure 7 This is a three-dimensional structural diagram of the conical tray in this invention; Figure 8 This is a schematic diagram of the outer shear ring in this invention; Figure 9 This is a cross-sectional view of the present invention; Figure 10 This is a schematic diagram of the rotating motor in this invention; Figure 11 This is a schematic diagram of the structure of the drive gear of the present invention.

[0018] The labels in the diagram represent the following: 1. Shell; 2. Foot; 3. Primary mixing component; 301. Inlet cavity; 302. Fixed screen; 303. Through hole; 304. First connecting pipe; 305. Dispersion cavity; 306. Dispersion mesh plate; 307. Second connecting pipe; 4. Suction component; 401. Suction shell; 402. One-way inlet valve; 403. One-way exhaust valve; 404. Electric horizontal telescopic rod; 405. Hydraulic plate; 5. Secondary mixing component; 501 502. Fixed internal gear ring; 503. Drive gear; 504. Revolutionary gear; 505. Conical tray; 506. First guide groove; 507. Connecting shaft; 508. Inner shearing ring; 509. Actuating plate; 510. Shearing hole; 6. Rotating component; 601. Motor bracket; 602. Rotating motor; 603. Protective cavity; 604. Drive gear; 605. Inner shearing ring transmission gear; 606. Outer shearing ring transmission gear ring; 7. Discharge valve. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Please see Figures 1-11As shown, this embodiment provides a stepped mixing device for high homogenization and anti-segregation dry mortar, including a shell 1. The shell 1 is a vertical, sealed cylindrical structure. Four sets of feet 2 are fixedly installed at the bottom of the shell 1 for stable installation of the device. The interior of the shell 1 is sequentially and sealed from top to bottom, with a primary mixing component 3, a suction component 4, and a secondary mixing component 5, forming a three-stage stepped mixing structure from top to bottom to achieve progressive homogenization of materials. A rotating component 6 is fixedly installed on the outside of the shell 1. The power output end of the rotating component 6 is connected to the secondary mixing component 5 for transmission, providing power for deep mixing.

[0021] The preliminary mixing component 3 includes, from top to bottom, an inlet chamber 301, a first connecting pipe 304, a dispersion chamber 305, and a second connecting pipe 307. The inlet chamber 301 has a feed inlet at its top, connected to the feed hopper at the top of the shell 1. A fixed screen 302 is fixedly installed in the middle of the inner cavity of the inlet chamber 301. The fixed screen 302 has several evenly spaced through holes 303 on its plate for preliminary dispersion of the input material, breaking up powder agglomerates and large particle clusters. The dispersion chamber... A dispersion mesh plate 306 is horizontally fixedly installed in the inner cavity of body 305. The aperture of the holes 303 on the fixed screen 302 is larger than the aperture of the dispersion mesh plate 306, forming a stepped pre-dispersion structure with decreasing aperture from top to bottom, realizing two-stage screening and dispersion of materials. The bottom of the cavity 301 is connected to the top of the dispersion cavity 305 through the first connecting pipe 304, and the bottom of the dispersion cavity 305 is connected to the feed end of the suction component 4 through the second connecting pipe 307, ensuring that the material is conveyed downward step by step.

[0022] The suction component 4 includes a suction housing 401, which is a horizontal, sealed cavity structure. A one-way inlet valve 402 is fixedly installed at the top inlet of the suction housing 401, and a one-way exhaust valve 403 is fixedly installed at the bottom outlet of the suction housing 401. The bottom end of the second connecting pipe 307 is sealed and connected to the inlet end of the one-way inlet valve 402. The one-way inlet valve 402 is unidirectionally connected from the second connecting pipe 307 to the inner cavity of the suction housing 401, and the one-way exhaust valve 403 is unidirectionally connected from the inner cavity of the suction housing 401 to the secondary stirring component 5, ensuring that the material is conveyed downwards in one direction and avoiding backflow. An electric horizontal telescopic rod 404 is horizontally fixedly installed on the side wall of the suction housing 401. The telescopic end of the electric horizontal telescopic rod 404 extends into the inner cavity of the suction housing 401 and is fixedly connected to a hydraulic plate 405. The outer edge of the hydraulic plate 405 slides and seals against the inner wall of the suction housing 401. Through the reciprocating extension and retraction of the electric horizontal telescopic rod 404, the hydraulic plate 405 is driven to move horizontally back and forth in the suction housing 401, so that the inner cavity of the suction housing 401 forms an alternating positive and negative pressure environment, realizing the negative pressure suction and positive pressure high-speed ejection of materials, forming a suspended turbulent flow in the closed space, completing the gas homogenization, and effectively eliminating the segregation tendency of materials with different densities.

[0023] The secondary mixing component 5 includes a fixed internal gear ring 501, a conical tray 504, and coaxially arranged inner shear ring 507 and outer shear ring 508. The fixed internal gear ring 501 is fixedly installed on the inner wall of the housing 1. Three sets of circumferentially arranged planetary gears 503 mesh on the inner side of the fixed internal gear ring 501. The centers of the three sets of planetary gears 503 mesh with a drive gear 502, forming a planetary gear system. The bottom of the axle of the planetary gear 503 is fixedly connected to the top surface of the conical tray 504. The top surface of the conical tray 504 has several radially distributed first guide grooves 505. The outlet end of the one-way exhaust valve 403 faces the top surface of the conical tray 504. The material after pneumatic homogenization falls onto the conical tray 504 and rotates with the planetary motion of the planetary gears 503, realizing the overall mixing and uniform distribution of the material.

[0024] A connecting shaft 506 is fixedly connected to the top center of the inner shear ring 507. The top end of the connecting shaft 506 is fixedly connected to the center of the drive gear 502 through the conical tray 504 via a bearing. Both the inner shear ring 507 and the outer shear ring 508 have a number of shear holes 510 evenly opened on their ring bodies. Both the outer wall of the inner shear ring 507 and the inner wall of the outer shear ring 508 are fixedly installed with a number of radially distributed actuating plates 509. Both the inner shear ring 507 and the outer shear ring 508 are rotatably installed in the inner cavity of the housing 1 via bearings and are located below the conical tray 504. The inner shear ring 507 and the outer shear ring 508 rotate in opposite directions, forming a relative shearing and stirring structure. The material is subjected to high-speed shearing force as it passes through the shear holes 510, and is repeatedly stirred by the actuating plates 509 to achieve deep dispersion and fine mixing, completing the third stage of deep stirring.

[0025] The rotating component 6 includes a motor bracket 601, which is fixedly mounted on the outer wall of the housing 1. A rotating motor 602 is fixedly mounted on the motor bracket 601. A protective cavity 603 is fixedly mounted on the outer wall of the housing 1 at the position corresponding to the rotating motor 602. The output shaft of the rotating motor 602 extends into the protective cavity 603 and is fixedly connected to a drive gear 604. One side of the drive gear 604 meshes with an inner shear ring drive gear 605, which is connected to the connecting shaft 506 via a drive shaft to provide rotational power for the inner shear ring 507. The other side of the drive gear 604 meshes with an outer shear ring drive gear ring 606, which is fixedly connected to the outer wall of the outer shear ring 508 to provide reverse rotational power for the outer shear ring 508. By using the same rotating motor 602 to simultaneously drive the inner shear ring 507 and the outer shear ring 508 to rotate in opposite directions, the drive gear 502 is also driven to rotate, realizing synchronous drive of planetary revolution and reverse shearing, simplifying the transmission structure and reducing equipment energy consumption.

[0026] This embodiment adopts a vertical closed cylinder to integrate a three-stage mixing unit for pre-dispersion, pneumatic homogenization, and deep shearing. The material flows from top to bottom to complete the staged processing, eliminating the need for multiple devices to be connected in series for transfer. The structure is compact and occupies a small area. The structure eliminates secondary segregation and dust spillage during the material transfer process, greatly improving environmental protection and space utilization.

[0027] This embodiment adopts a gradient pre-dispersion structure to optimize the material state in advance: a two-stage sieve dispersion structure with decreasing aperture can quickly break up powder agglomeration and aggregate clumping, and simultaneously complete pre-screening and impurity removal, homogenize the particle size distribution of the material in advance, greatly reduce the load of subsequent mixing processes, lay the foundation for deep homogenization, and at the same time reduce the wear of large particles on the subsequent mixing structure.

[0028] This embodiment adopts an alternating positive and negative pressure pneumatic homogenization structure to fundamentally solve the problem of segregation: the electric telescopic rod drives the hydraulic plate to reciprocate to form alternating positive and negative pressure, which, together with the one-way valve, realizes the one-way negative pressure intake and positive pressure high-speed injection of materials. This allows materials of different densities and particle sizes to form a suspended turbulent state and be fully mixed in the closed cavity. This makes up for the shortcomings of traditional mechanical stirring in the easy stratification of materials with different densities, and fundamentally suppresses the gravity segregation problem of dry powder mortar.

[0029] This embodiment adopts a composite stirring structure, which improves homogenization efficiency in two ways: it adopts a composite stirring design of planetary revolution tumbling and inner and outer ring reverse shearing. The two major stirring actions are realized synchronously through the same drive motor. The planetary revolution of the conical tray completes the overall macroscopic tumbling and uniform distribution of materials, and the high-speed reverse rotation of the inner and outer shear rings generates strong shearing force to achieve microscopic deep dispersion of trace additives. The transmission structure is simplified and the energy consumption is lower. The stirring homogenization and processing efficiency are significantly better than the traditional single-stage stirring structure.

[0030] Example 2 This embodiment provides a stepped mixing process for highly homogenized and segregation-resistant dry powder mortar, implemented based on the mixing device described in Embodiment 1, and specifically includes the following steps: S1 Pre-dispersion treatment: Weigh the cement, quartz sand aggregate, adhesive powder, functional additives and other components of the dry powder mortar according to the proportion, and put them into the inlet cavity 301 of the preliminary mixing component 3 from the feed hopper at the top of the shell 1. The material first falls on the fixed screen 302, and the material is dispersed by the impact and screening action of the fixed screen 302, breaking up powder agglomerates and large particle clusters. The material that meets the particle size requirements passes through the through hole 303 and enters the dispersion cavity 305 through the first connecting pipe 304. The material falls on the dispersion mesh plate 306, and is further dispersed and screened by the dispersion mesh plate 306 with smaller aperture, further refining the material dispersion degree, completing the first stage of stepped pre-dispersion mixing, laying the foundation for subsequent homogenization treatment; S2 Pneumatic Homogenization Processing: The pre-dispersed material is collected through the second connecting pipe 307. At this time, the electric horizontal telescopic rod 404 drives the hydraulic plate 405 to move away from the feed inlet, creating a negative pressure environment in the inner cavity of the suction shell 401. The one-way inlet valve 402 automatically opens, and the one-way exhaust valve 403 closes. The material is sucked into the inner cavity of the suction shell 401 by the negative pressure. Subsequently, the electric horizontal telescopic rod 404 drives the hydraulic plate 405 to move rapidly towards the feed inlet, creating a high-pressure positive pressure environment in the inner cavity of the suction shell 401. The one-way inlet valve 402 automatically closes, and the one-way exhaust valve 403 opens. The material and the high-pressure airflow are ejected at high speed, forming a suspended turbulent state in the closed cavity of the shell 1. This allows materials of different densities and particle sizes to fully collide and mix in the airflow, completing the second-stage stepped pneumatic homogenization and stirring, fundamentally eliminating the segregation tendency caused by the density difference of the material under gravity. S3 Deep Shearing and Mixing: After pneumatic homogenization, the material falls evenly onto the conical tray 504 of the secondary mixing component 5. The rotating motor 602 starts, driving the drive gear 502 to rotate via the drive gear 604. This, in turn, drives the three sets of planetary gears 503 to perform planetary motion along the fixed inner gear ring 501, causing the conical tray 504 to revolve. Through the first guide groove 505, the material is stirred and distributed circumferentially, ensuring that the material falls evenly between the inner shear ring 507 and the outer shear ring 508. Simultaneously, the rotating motor 602 drives the gear 605 through the inner shear ring. The outer shear ring drive gear ring 606 drives the inner shear ring 507 and outer shear ring 508 to rotate in opposite directions at high speed. The material is repeatedly tumbled and stirred under the drive of the agitator plate 509. At the same time, it passes through the shear holes 510 on the inner shear ring 507 and outer shear ring 508 at high speed and is subjected to strong relative shearing action, so as to achieve deep dispersion and fine mixing of the material, ensuring that the trace additives are evenly distributed in the entire mortar system, and completing the third stage of stepped deep mixing. After the mixing is completed, the material is discharged from the discharge port at the bottom of the shell 1, and a highly homogenized and anti-segregation dry powder mortar product is obtained.

[0031] This embodiment optimizes the material state in advance through two-stage gradient screening and pre-dispersion, avoiding agglomerated materials from entering subsequent processes, significantly shortening the processing time of the core mixing stage, and reducing the overall production cycle by more than 30% compared with traditional processes. At the same time, it reduces equipment wear, extends equipment service life, and reduces production and maintenance costs. The planetary revolution mixing process achieves macroscopic homogenization of large-volume materials, while the reverse high-speed shearing process achieves microscopic deep dispersion of materials. This ensures that the functional admixtures at a ratio of parts per million are evenly distributed throughout the entire mortar system, significantly improving the stability of the core properties of the finished mortar, such as water retention, bonding strength, and workability.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stepped mixing device for high homogenization and anti-segregation dry mortar, comprising a shell (1), wherein the bottom of the shell (1) is fixedly provided with feet (2), characterized in that: The interior of the shell (1) is sealed and connected from top to bottom with a primary stirring component (3), a suction component (4), and a secondary stirring component (5), forming a three-stage stepped stirring structure from top to bottom; a rotating component (6) is fixedly installed on the outside of the shell (1), and the power output end of the rotating component (6) is connected to the secondary stirring component (5) in a transmission.

2. The high homogenization and anti-segregation dry mortar stepped mixing device according to claim 1, characterized in that: The preliminary stirring component (3) includes an inlet chamber (301), a first connecting pipe (304), a dispersion chamber (305), and a second connecting pipe (307) arranged sequentially from top to bottom. A fixed screen (302) is fixedly installed in the middle of the inner cavity of the inlet chamber (301), and a plurality of through holes (303) are evenly opened on the plate of the fixed screen (302). A dispersion mesh plate (306) is horizontally fixedly installed in the inner cavity of the dispersion chamber (305). The bottom of the inlet chamber (301) is connected to the top of the dispersion chamber (305) through the first connecting pipe (304), and the bottom of the dispersion chamber (305) is connected to the feed end of the suction component (4) through the second connecting pipe (307).

3. The high homogenization and anti-segregation dry mortar stepped mixing device according to claim 2, characterized in that: The suction component (4) includes a suction housing (401), a one-way inlet valve (402) is fixedly installed at the top inlet of the suction housing (401), a one-way exhaust valve (403) is fixedly installed at the bottom outlet of the suction housing (401), and the bottom end of the second connecting pipe (307) is sealed and connected to the inlet end of the one-way inlet valve (402); an electric horizontal telescopic rod (404) is fixedly installed horizontally on the side wall of the suction housing (401), the telescopic end of the electric horizontal telescopic rod (404) extends into the inner cavity of the suction housing (401) and is fixedly connected to a hydraulic plate (405), and the outer edge of the hydraulic plate (405) slides and seals against the inner wall of the suction housing (401).

4. The high homogenization and anti-segregation dry powder mortar stepped mixing device according to claim 3, characterized in that: The secondary stirring component (5) includes a fixed internal gear ring (501) and a conical tray (504). The fixed internal gear ring (501) is fixedly installed on the inner wall of the housing (1). Several planetary gears (503) are meshed on the inner side of the fixed internal gear ring (501). The center of several planetary gears (503) is meshed with a drive gear (502). The bottom of the axle of the planetary gear (503) is fixedly connected to the top surface of the conical tray (504). Several first guide grooves (505) are opened on the top surface of the conical tray (504). The outlet end of the one-way exhaust valve (403) is set towards the top surface of the conical tray (504).

5. The high homogenization and anti-segregation dry powder mortar stepped mixing device according to claim 4, characterized in that: The secondary stirring component (5) also includes an inner shear ring (507) and an outer shear ring (508) arranged coaxially. A connecting shaft (506) is fixedly connected to the top center of the inner shear ring (507), and the top end of the connecting shaft (506) is fixedly connected to the center of the drive gear (502). A plurality of shear holes (510) are evenly opened on the ring body of both the inner shear ring (507) and the outer shear ring (508). A plurality of actuating plates (509) are fixedly installed on the outer wall of the inner shear ring (507) and the inner wall of the outer shear ring (508). Both the inner shear ring (507) and the outer shear ring (508) are rotatably installed in the inner cavity of the housing (1) and located below the conical tray (504).

6. The high homogenization and anti-segregation dry mortar stepped mixing device according to claim 5, characterized in that: The rotating component (6) includes a motor bracket (601), which is fixedly installed on the outer wall of the housing (1). A rotating motor (602) is fixedly installed on the motor bracket (601). A protective cavity (603) is fixedly installed on the outer wall of the housing (1) corresponding to the position of the rotating motor (602). The output shaft of the rotating motor (602) extends into the protective cavity (603) and is fixedly connected to a drive gear (604). An inner shear ring drive gear (605) meshes with one side of the drive gear (604), and the inner shear ring drive gear (605) is connected to the connecting shaft (506). An outer shear ring drive gear (606) meshes with the other side of the drive gear (604), and the outer shear ring drive gear (606) is fixedly connected to the outer wall of the outer shear ring (508).

7. The high homogenization and anti-segregation dry mortar stepped mixing device according to claim 2, characterized in that: The aperture of the through hole (303) on the fixed screen (302) is larger than the aperture of the mesh of the dispersing mesh plate (306), forming a stepped pre-dispersion structure with decreasing aperture from top to bottom.

8. The high homogenization and anti-segregation dry mortar stepped mixing device according to claim 3, characterized in that: The one-way inlet valve (402) is unidirectionally connected from the second connecting pipe (307) to the inner cavity of the suction housing (401), and the one-way exhaust valve (403) is unidirectionally connected from the inner cavity of the suction housing (401) to the secondary stirring component (5).

9. The high homogenization and anti-segregation dry mortar stepped mixing device according to claim 5, characterized in that: The inner shear ring (507) and the outer shear ring (508) rotate in opposite directions, forming a relative shearing and stirring structure.

10. A stepped mixing process for highly homogenized, segregation-resistant dry powder mortar, characterized in that, The implementation of the high homogenization and anti-segregation dry mortar stepped mixing device according to any one of claims 1-9 includes the following steps: Pre-dispersion treatment: The dry powder mortar components are put into the preliminary mixing unit (3). The materials are first dispersed by the fixed screen (302) and the agglomerates are broken. Then, they enter the dispersion chamber (305) through the first connecting pipe (304) and are dispersed and screened again by the dispersion mesh plate (306) to complete the first stage of step-by-step pre-dispersion mixing. Pneumatic homogenization treatment: The pre-dispersed material enters the suction unit (4) through the second connecting pipe (307). The electric horizontal telescopic rod (404) drives the hydraulic plate (405) to reciprocate, so that alternating positive and negative pressure is formed in the suction shell (401). The material is sucked in under negative pressure and sprayed out at high speed under positive pressure. The second-stage step-type pneumatic homogenization and stirring is completed in the suspended turbulent state, eliminating the segregation tendency caused by the density difference of the material. Deep shearing and mixing: After pneumatic homogenization, the material falls into the secondary mixing component (5). The drive gear (502) drives the planetary gear (503) to make planetary motion along the fixed inner gear ring (501). The material is turned over as a whole through the conical tray (504). At the same time, the inner shear ring (507) and the outer shear ring (508) rotate in opposite directions. The material is sheared and finely mixed at high speed through the shearing hole (510) and the actuating plate (509), completing the third-stage step-by-step deep mixing, and obtaining a high-homogeneity, anti-segregation dry mortar finished product.

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