A gypsum board mixing device and method

Abstract

The present invention relates to the field of disk mixers, and particularly to a gypsum board mixing device, which includes a mixing housing, a mixing disk, a centrifugal disk, and a drive system. The mixing housing has a mixing chamber in the shape of a disk. The mixing disk and the centrifugal disk are coaxially arranged inside the mixing chamber. The centrifugal disk is arranged above the mixing disk. The drive system is connected to the centrifugal disk and the mixing disk so that the centrifugal disk and the mixing disk rotate respectively, and the rotational speed of the centrifugal disk is greater than that of the mixing disk. The solid material inlet is arranged above the centrifugal disk, and the centrifugal disk is used to receive the falling solid material. The liquid material inlet is arranged around the inner wall of the mixing chamber, and the liquid material put in through the liquid material inlet flows downward along the inner wall of the mixing chamber. In the embodiment of the present invention, the solid material is evenly thrown by the high-speed rotation of the centrifugal disk, and combined with the water flowing downward along the side wall of the mixing housing, it is ensured that the solid material is fully dispersed before entering the mixing area, significantly improving the mixing uniformity.

Description

Technical Field

[0001] The present invention relates to the field of disk mixers, and particularly to a gypsum board mixing device and method. Background Art

[0002] At present, the disk mixers on the market mainly consist of a rotating mixing disk, which is usually installed at the central position of a container and driven by an electric motor to rotate at a certain speed. During its operation, raw materials (such as solid materials) are put into the upper part of the mixing disk through a feeding port. As the mixing disk rotates, the raw materials are evenly distributed in the container. Through the action of the mixing teeth on the mixing disk, the solid materials are fully mixed with water or other liquids to form a uniform slurry.

[0003] Since the solid materials of the traditional disk mixer are put onto the mixing disk, and then the solid materials are scraped to the working area of the mixing teeth by a fixed scraper along with the rotation of the mixing disk, it is difficult to evenly distribute the solid materials. Summary of the Invention

[0004] The purpose of the present invention is to provide a gypsum board mixing device and method to solve the technical problem that the solid materials of the traditional disk mixer are difficult to be evenly distributed inside the mixer.

[0005] To solve the above technical problems, the present invention specifically provides the following technical solutions:

[0006] A gypsum board mixing device includes a mixing housing, a mixing disk, a centrifugal disk and a drive system;

[0007] The mixing housing is fixedly connected to a frame. The mixing housing has a mixing chamber in the shape of a disk. The mixing disk and the centrifugal disk are coaxially arranged inside the mixing chamber, and the centrifugal disk is arranged above the mixing disk;

[0008] The drive system is connected to the centrifugal disk and the mixing disk, so that the centrifugal disk and the mixing disk rotate respectively, and the rotation speed of the centrifugal disk is greater than that of the mixing disk;

[0009] A solid material inlet and a liquid material inlet are arranged at the top of the mixing housing. The solid material inlet is arranged above the centrifugal disk. The centrifugal disk is used to receive the falling solid materials and evenly sprinkle the solid materials around by its own rotation. The liquid material inlet is arranged around the inner wall of the mixing chamber. The liquid materials put in through the liquid material inlet flow downward along the inner wall of the mixing chamber, wash the flying solid materials to between the mixing disk and the mixing chamber, and achieve uniform mixing through the rotation of the mixing disk.

[0010] Further, a liquid collecting chamber surrounding the inner wall of the mixing chamber for one week is provided at the top of the mixing housing. The liquid collecting chamber is in a circular ring shape. The liquid collecting chamber is connected to a liquid source through a liquid inlet pipe. An overflow port close to the inner wall of the mixing chamber is provided at the highest position of the liquid collecting chamber. The liquid source puts liquid materials into the interior of the liquid collecting chamber through the liquid inlet pipe. After the liquid level of the liquid materials exceeds the overflow port, it overflows, and the overflowed liquid materials flow downward along the inner wall of the mixing chamber.

[0011] Further, a plurality of liquid discharge holes communicating with the mixing chamber are provided at the lowest position of the liquid collecting chamber. The flux of the liquid discharge holes is smaller than that of the liquid inlet pipe, so that the input speed of the liquid materials through the liquid inlet pipe is greater than the output speed of the liquid materials through the liquid discharge holes.

[0012] Further, the solid material inlet is provided directly above in the axial direction of the centrifugal disk.

[0013] Further, the drive system includes a motor, a high-speed shaft, a speed reducer, and a low-speed shaft;

[0014] Wherein, the motor and the speed reducer are fixedly connected to the machine frame. The main shaft of the motor, the high-speed shaft, the input shaft of the speed reducer, the output shaft of the speed reducer, and the low-speed shaft are coaxially and sequentially connected. Through holes with clearance fit with the high-speed shaft are provided on the input shaft, the output shaft, and the low-speed shaft. The mixing disk is sleeved outside the low-speed shaft, and the mixing disk is in transmission connection with the low-speed shaft. The centrifugal disk is installed at the top of the high-speed shaft, and the centrifugal disk is in transmission connection with the high-speed shaft.

[0015] Further, the speed reducer further includes: a speed reduction housing and a gear transmission mechanism. The input shaft and the output shaft are coaxially arranged, and the input shaft and the output shaft are respectively rotationally connected to the speed reduction housing. The output shaft and the input shaft are connected through the gear transmission mechanism.

[0016] Further, the gear transmission mechanism includes a first gear coaxially connected to the input shaft, a second gear meshing with the first gear, a third gear coaxially connected to the second gear, and a fourth gear meshing with the third gear and coaxially connected to the output shaft. The number of teeth of the first gear is less than that of the second gear, and the number of teeth of the third gear is less than that of the fourth gear.

[0017] Further, a first flange is connected to one end of the high-speed shaft close to the motor, a second flange is connected to the input shaft of the speed reducer, a third flange is connected to the output shaft of the speed reducer, and a fourth flange is connected to one end of the low-speed shaft close to the speed reducer. The first flange and the second flange are fixedly connected, and the third flange and the fourth flange are fixedly connected.

[0018] Further, the centrifugal disk includes a rotating disk and a rotating rod. The rotating rod is coaxially arranged below the rotating disk. An axially upwardly extending first threaded hole is formed in the bottom wall of the rotating rod. The top end of the high-speed shaft is coaxially connected with a threaded column, and the threaded column is connected to the first threaded hole.

[0019] An axially upwardly extending second threaded hole is formed in the bottom wall of the first threaded hole. The diameter of the second threaded hole is relatively smaller than that of the first threaded hole, and the spiral directions of the first threaded hole and the second threaded hole are opposite.

[0020] A through hole axially penetrating itself and the threaded column is provided inside the high-speed shaft. A bolt is inserted into the through hole. The head of the bolt abuts against the bottom end of the high-speed shaft, and the rod portion of the bolt passes through the high-speed shaft and is connected to the second threaded hole.

[0021] A method for mixing gypsum boards. The method for mixing gypsum boards is performed using a gypsum board mixing device, and the method for mixing gypsum boards includes the following steps;

[0022] Step 1, feeding raw materials: Through the solid material inlet, solid materials are put above the centrifugal disk. At the same time, through the liquid material inlet, liquid materials are put into the mixing chamber, and the liquid materials flow downward along the inner wall of the mixing chamber.

[0023] Step 2, dispersing solid materials: Rotate the centrifugal disk at a speed higher than that of the mixing disk, and use centrifugal force to evenly sprinkle the solid materials to the edge area of the mixing chamber.

[0024] Step 3, mixing and stirring: Rotate the mixing disk at a lower speed, and the stirring teeth on the mixing disk shear and stir the solid materials sprinkled to the edge and the liquid materials flowing down.

[0025] Step 4, discharging the mixture: After reaching the predetermined stirring time, discharge the slurry.

[0026] The present application has the following beneficial effects compared with the prior art:

[0027] In the embodiment of the present invention, the solid materials are evenly thrown by the high-speed rotation of the centrifugal disk, and combined with the water flowing downward along the side wall of the mixing housing, it is ensured that the solid materials are fully dispersed before entering the mixing area, significantly improving the mixing uniformity. Description of the Drawings

[0028] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained based on the provided drawings.

[0029] Figure 1 Top view of the embodiment of the present invention;

[0030] Figure 2 For Figure 1 Cross-sectional view in the A-A direction of;

[0031] Figure 3 For Figure 2 Partial enlarged view at position B of;

[0032] Figure 4 Stereogram of the drive system and the mixing disk of the embodiment of the present invention;

[0033] Figure 5 Stereogram of the drive system of the embodiment of the present invention;

[0034] Figure 6 Front view of the speed reducer, high-speed shaft and low-speed shaft of the embodiment of the present invention;

[0035] Figure 7 For Figure 6 Cross-sectional view in the C-C direction of;

[0036] The reference numerals in the figure are respectively represented as follows:

[0037] 2 - mixing housing; 21 - mixing chamber; 22 - solid material inlet; 23 - liquid material inlet; 24 - discharge port; 25 - liquid collection chamber; 251 - liquid inlet pipe; 252 - overflow port; 253 - drain hole; 3 - mixing disk; 31 - mixing teeth; 32 - seal; 4 - centrifugal disk; 41 - rotating disk; 42 - rotating rod; 421 - first threaded hole; 422 - second threaded hole; 43 - bolt; 5 - motor; 6 - high-speed shaft; 61 - first flange; 62 - threaded column; 63 - first bearing; 7 - speed reducer; 71 - reduction housing; 72 - input shaft; 721 - second flange; 73 - output shaft; 731 - third flange; 74 - first gear; 75 - second gear; 76 - third gear; 77 - fourth gear; 8 - low-speed shaft; 81 - fourth flange; 82 - second bearing; 83 - pressure plate. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In view of the deficiencies of the existing mixing disk mixer in terms of mixing uniformity and efficiency, the present invention designs an improved gypsum board mixing device, and its specific structure and working principle are described as follows.

[0040] Reference Figure 1 、 Figure 2 The gypsum board mixing device includes: a mixing housing 2, a mixing disk 3, a centrifugal disk 4, and a drive system.

[0041] The mixing housing 2 is fixedly connected to the frame. The mixing housing 2 has a mixing chamber 21 in the shape of a flat disk. The mixing disk 3 and the centrifugal disk 4 are arranged inside the mixing chamber 21. The centrifugal disk 4 is arranged above the mixing disk 3, and the centrifugal disk 4, the mixing disk 3, and the mixing chamber 21 are coaxially arranged.

[0042] The drive system is connected to the centrifugal disk 4 and the mixing disk 3, so that the centrifugal disk 4 and the mixing disk 3 rotate respectively, and the rotation speed of the centrifugal disk 4 is greater than that of the mixing disk 3.

[0043] A solid material inlet 22 and a liquid material inlet 23 are arranged at the top of the mixing housing 2, which are respectively used for feeding solid materials and liquid materials.

[0044] The solid material inlet 22 is arranged above the centrifugal disk 4. The centrifugal disk 4 is used to receive the falling solid materials and evenly sprinkle the solid materials around through its own high-speed rotation.

[0045] The liquid material inlet 23 is arranged around the inner wall of the mixing chamber 21. The liquid materials fed through the liquid material inlet 23 flow downward along the inner wall of the mixing chamber 21, wash the flying solid materials to between the mixing disk 3 and the mixing chamber 21, and the solid materials and the liquid materials are uniformly mixed under the stirring action of the mixing disk 3.

[0046] Reference Figure 2 A discharge port 24 is arranged at the bottom of the mixing housing 2, and a discharge valve (not shown in the figure) is installed at the discharge port 24.

[0047] Reference Figure 3 、 Figure 4 Stirring teeth 31 are installed at the edge of the mixing disk 3. The stirring teeth 31 are used to shear and stir the materials. A seal 32 is arranged between the bottom of the mixing disk 3 and the bottom wall of the mixing chamber 21. The seal 32 is used to prevent the materials from approaching the drive system.

[0048] The gypsum board mixing method comprises the following steps;

[0049] Step 1, feeding raw materials: Through the solid material inlet, solid materials are put above the centrifugal disk 4. At the same time, through the liquid material inlet, liquid materials are put into the mixing chamber 21, so that the liquid materials flow downward along the inner wall of the mixing chamber 21;

[0050] Step 2, dispersing solid materials: Make the centrifugal disk 4 rotate at a speed higher than that of the mixing disk, and use centrifugal force to evenly sprinkle the solid materials to the edge area of the mixing chamber 21;

[0051] Step 3, mixing and stirring: Make the mixing disk 3 rotate at a lower speed, and the mixing disk 3 shears and stirs the solid materials sprinkled to the edge and the flowing-down liquid materials;

[0052] Step 4, discharging the mixture: After reaching the predetermined stirring time, open the discharge valve, and discharge the slurry through the discharge port 24.

[0053] The advantages of the above embodiments are as follows:

[0054] 1. The dispersion speed of solid materials is improved: The solid materials are evenly thrown by the high-speed rotation of the centrifugal disk 4, and combined with the water flow flowing downward along the side wall of the mixing housing 2, it is ensured that the solid materials are fully dispersed before entering the mixing area, significantly improving the mixing uniformity.

[0055] 2. The rotation speed of the mixing disk 3 is reduced: Reducing the rotation speed of the mixing disk 3 can reduce the excessive shearing of materials and local high-speed flow, avoiding the materials being ejected from the mixing area or generating uneven mixing areas.

[0056] 3. The scraper and wear-resistant plate are cancelled: There is no need to design a scraper for scraping the solid materials from above the mixing disk 3, and at the same time, the wear-resistant plate installed between the mixing disk 3 and the scraper is also cancelled, reducing the kinetic energy loss during the rotation of the mixing disk 3 and lowering the production cost of the equipment.

[0057] Furthermore, since the traditional liquid material inlet 23 is a round hole and cannot achieve the technical effect that the liquid materials put through the liquid material inlet 23 flow downward along the inner wall of the mixing chamber 21, an example is provided below to achieve this technical effect.

[0058] Reference Figure 3, at the top of the stirring housing 2, a liquid collecting chamber 25 surrounding the inner wall of the stirring chamber 21 for one week is provided. The liquid collecting chamber 25 is in a circular ring shape. The liquid collecting chamber 25 is connected to a liquid source through a liquid inlet pipe 251. At the highest point of the liquid collecting chamber 25, an overflow port 252 close to the inner wall of the stirring chamber 21 is provided. The liquid source puts liquid materials into the interior of the liquid collecting chamber 25 through the liquid inlet pipe 251. After the liquid level of the liquid materials exceeds the overflow port 252, it overflows, and the overflowed liquid materials flow downward along the inner wall of the stirring chamber 21.

[0059] Since the liquid materials that fail to overflow from the overflow port 252 will stay in the interior of the liquid collecting chamber 25, thus polluting the liquid materials used in the next production. To solve this problem, preferably, a plurality of drain holes 253 communicating with the stirring chamber 21 are provided at the lowest point of the liquid collecting chamber 25. The flux of the drain holes 253 is smaller than the flux of the liquid inlet pipe 251, so that the input speed of the liquid materials through the liquid inlet pipe 251 is greater than the output speed of the liquid materials through the drain holes 253. Thus, the technical effect of emptying the liquid materials in the liquid collecting chamber 25 through the drain holes 253 is achieved, and the technical effect of the liquid materials in the liquid collecting chamber 25 overflowing through the overflow port 252 is also achieved.

[0060] Furthermore, in order to improve the dispersion effect of the solid materials and ensure that the solid materials are evenly sprinkled to the edge of the stirring chamber 21, referring to Figure 2 , the solid material inlet 22 is arranged directly above the axis direction of the centrifugal disk 4. This design makes the distance between the solid materials and the edge of the stirring chamber 21 in any direction equal when the solid materials are sprinkled, thereby further improving the mixing efficiency of the solid materials.

[0061] However, since the space directly above the axis direction of the centrifugal disk 4 is occupied by the solid material inlet 22, the drive system can only be arranged below the stirring disk 3 and the centrifugal disk 4. However, it is difficult for the traditional drive system to drive two coaxial components to rotate at different speeds respectively from one direction. To solve this problem, an example is provided below to achieve this technical effect.

[0062] Referring to Figure 2 、 Figure 4 and Figure 5 , the drive system includes: a motor 5, a high-speed shaft 6, a reducer 7 and a low-speed shaft 8.

[0063] Among them, the motor 5 and the reducer 7 are fixedly connected to the frame. The main shaft of the motor 5, the high-speed shaft 6, the input shaft 72 of the reducer 7, the output shaft 73 of the reducer 7 and the low-speed shaft 8 are coaxially connected in sequence. And through holes with clearance fit with the high-speed shaft 6 are provided on the input shaft 72 of the reducer 7, the output shaft 73 of the reducer 7 and the low-speed shaft 8. The stirring disk 3 is sleeved outside the low-speed shaft 8, and the stirring disk 3 is in transmission connection with the low-speed shaft 8. The centrifugal disk 4 is installed at the top of the high-speed shaft 6, and the centrifugal disk 4 is in transmission connection with the high-speed shaft 6.

[0064] The main shaft of the motor 5 outputs torque to the high-speed shaft 6, causing the high-speed shaft 6 to rotate at a relatively fast speed. The high-speed shaft 6 outputs torque to the low-speed shaft 8 through the speed reducer 7, causing the low-speed shaft 8 to rotate at a relatively slow speed. The high-speed shaft 6 penetrates through the entire speed reducer 7 and the low-speed shaft 8, so that the centrifugal disk 4 can rotate at a relatively fast speed above the stirring disk 3, while the stirring disk 3 rotates at a relatively slow speed.

[0065] Furthermore, since the traditional speed reducer 7 does not have a structure that allows a rotating shaft to penetrate through, to solve this problem, an example is provided below to achieve this technical effect.

[0066] Reference Figure 6 and Figure 7 The speed reducer 7 includes: a reduction housing 71, an input shaft 72, a gear transmission mechanism, and an output shaft 73. The input shaft 72 and the output shaft 73 are coaxially arranged, and the input shaft 72 and the output shaft 73 are respectively rotatably connected to the reduction housing 71. Both the input shaft 72 and the output shaft 73 have through holes that are clearance-fitted with the high-speed shaft 6. The output shaft 73 and the input shaft 72 are connected by the gear transmission mechanism. The transmission ratio of the gear transmission mechanism is greater than 1, so that the input shaft 72 rotates at a relatively fast speed, while the output shaft 73 rotates at a relatively slow speed.

[0067] Furthermore, an example is provided below to illustrate the gear transmission mechanism with a transmission ratio greater than 1.

[0068] Reference Figure 7 The gear transmission mechanism includes a first gear 74 coaxially connected to the input shaft 72, a second gear 75 meshing with the first gear 74, a third gear 76 coaxially connected to the second gear 75, and a fourth gear 77 meshing with the third gear 76 and coaxially connected to the output shaft 73. The number of teeth of the first gear 74 is less than the number of teeth of the second gear 75, and the number of teeth of the third gear 76 is less than the number of teeth of the fourth gear 77.

[0069] The input shaft 72, the first gear 74, the second gear 75, the third gear 76, the fourth gear 77, and the output shaft 73 are sequentially transmitted, thus forming a gear transmission mechanism with a transmission ratio greater than 1.

[0070] Furthermore, a first flange 61 is connected to one end of the high-speed shaft 6 close to the motor 5, a second flange 721 is connected to the input shaft 72 of the speed reducer 7, a third flange 731 is connected to the output shaft 73 of the speed reducer 7, and a fourth flange 81 is connected to one end of the low-speed shaft 8 close to the speed reducer 7. The first flange 61 and the second flange 721 are fixedly connected, and the third flange 731 and the fourth flange 81 are fixedly connected.

[0071] To maintain the smooth rotation of the high-speed shaft 6 and the low-speed shaft 8, a first bearing 63 is installed between the high-speed shaft 6 and the low-speed shaft 8, and a second bearing 82 is installed between the low-speed shaft 8 and the stirring housing 2.

[0072] Regarding the connection method between the centrifugal disk 4 and the high-speed shaft 6, an example is provided below.

[0073] Reference Figure 3 and Figure 7 , the centrifugal disk 4 includes a rotating disk 41 and a rotating rod 42. The rotating rod 42 is coaxially arranged below the rotating disk 41. A first threaded hole 421 extending axially upward is formed on the bottom wall of the rotating rod 42. A threaded column 62 is coaxially connected to the top end of the high-speed shaft 6, and the threaded column 62 is connected to the first threaded hole 421.

[0074] A second threaded hole 422 extending axially upward is formed on the bottom wall of the first threaded hole 421. The diameter of the second threaded hole 422 is relatively smaller than that of the first threaded hole 421. A through hole axially penetrating itself and the threaded column 62 is provided inside the high-speed shaft 6. A bolt 43 is inserted into the through hole. The head of the bolt 43 abuts against the bottom end of the high-speed shaft 6, and the rod portion of the bolt 43 passes through the high-speed shaft 6 and is connected to the second threaded hole 422.

[0075] Preferably, the spiral directions of the first threaded hole 421 and the second threaded hole 422 are opposite, so as to improve the connection firmness between the centrifugal disk 4 and the high-speed shaft 6.

[0076] Regarding the connection method between the stirring disk 3 and the low-speed shaft 8, an example is provided below.

[0077] Reference Figure 3 , the stirring disk 3 and the low-speed shaft 8 transmit torque through a key (not shown in the figure). A pressure disk 83 is connected to the top of the low-speed shaft 8 by a bolt 43, and the pressure disk 83 is connected to the top of the stirring disk 3 by a bolt 43.

[0078] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the embodiments of the present invention.

Claims

1. A gypsum board stirring and mixing device, characterized in that: It comprises a stirring shell (2), a stirring disk (3), a centrifugal disk (4) and a driving system; The stirring shell (2) is fixedly connected to the frame, the stirring shell (2) is provided with a disc-shaped stirring chamber (21), the stirring disc (3) and the centrifugal disc (4) are coaxially arranged inside the stirring chamber (21), and the centrifugal disc (4) is arranged above the stirring disc (3); The driving system comprises a motor (5), a high-speed shaft (6), a reducer (7) and a low-speed shaft (8); the motor (5) and the reducer (7) are fixedly connected to a frame; the main shaft of the motor (5), the high-speed shaft (6), the input shaft (72) of the reducer (7), the output shaft (73) of the reducer (7) and the low-speed shaft (8) are coaxially connected in sequence; the input shaft (72), the output shaft (73) and the low-speed shaft (8) are all provided with through holes that are clearance-matched with the high-speed shaft (6); the stirring disc (3) is sleeved on the outer side of the low-speed shaft (8); the stirring disc (3) is drivingly connected to the low-speed shaft (8); the centrifugal disc (4) is mounted on the top of the high-speed shaft (6); the centrifugal disc (4) is drivingly connected to the high-speed shaft (6); the driving system causes the centrifugal disc (4) and the stirring disc (3) to rotate respectively, and the rotation speed of the centrifugal disc (4) is greater than the rotation speed of the stirring disc (3); The top of the stirring shell (2) is provided with a solid material inlet (22) and a liquid material inlet (23). The solid material inlet (22) is provided just above the centrifugal disc (4) in the axial direction. The solid material inlet (22) is provided above the centrifugal disc (4). The centrifugal disc (4) is used to receive the fallen solid material and evenly scatter the solid material in all directions through its own rotation. The liquid material inlet (23) is provided around the inner wall of the stirring chamber (21). The liquid material introduced through the liquid material inlet (23) flows downward along the inner wall of the stirring chamber (21), flushes the scattered solid material between the stirring disc (3) and the stirring chamber (21), and evenly mixes the solid material through the rotation of the stirring disc (3).

2. A gypsum board stirring and mixing device according to claim 1, characterized in that: A liquid collecting chamber (25) is arranged at the top of the stirring shell (2) and surrounds the inner wall of the stirring chamber (21). The liquid collecting chamber (25) is in the shape of a ring. The liquid collecting chamber (25) is connected to a liquid source via a liquid inlet pipe (251). An overflow port (252) close to the inner wall of the stirring chamber (21) is arranged at the highest point of the liquid collecting chamber (25). The liquid source feeds liquid material into the liquid collecting chamber (25) via the liquid inlet pipe (251). The liquid material overflows after the liquid level exceeds the overflow port (252). The overflowed liquid material flows downward along the inner wall of the stirring chamber (21).

3. A gypsum board stirring and mixing device according to claim 2, characterized in that: A plurality of drainage holes (253) connected to the stirring chamber (21) are provided at the lowest point of the liquid collecting chamber (25), and the flux of the drainage holes (253) is smaller than the flux of the liquid inlet pipe (251), so that the input speed of the liquid material through the liquid inlet pipe (251) is greater than the output speed of the liquid material through the drainage holes (253).

4. A gypsum board stirring and mixing device according to claim 1, characterized in that: The reducer (7) further comprises: a reduction housing (71) and a gear transmission mechanism, wherein the input shaft (72) and the output shaft (73) are coaxially arranged, and the input shaft (72) and the output shaft (73) are respectively rotationally connected to the reduction housing (71), and the output shaft (73) and the input shaft (72) are connected via the gear transmission mechanism.

5. A gypsum board stirring and mixing device according to claim 4, characterized in that: The gear transmission mechanism comprises a first gear (74) coaxially connected to the input shaft (72), a second gear (75) meshing with the first gear (74), a third gear (76) coaxially connected to the second gear (75), and a fourth gear (77) meshing with the third gear (76) and coaxially connected to the output shaft (73), wherein the number of teeth of the first gear (74) is smaller than the number of teeth of the second gear (75), and the number of teeth of the third gear (76) is smaller than the number of teeth of the fourth gear (77).

6. A gypsum board stirring and mixing device according to claim 4, characterized in that: The end of the high-speed shaft (6) close to the motor (5) is connected to a first flange (61), the input shaft (72) of the reducer (7) is connected to a second flange (721), the output shaft (73) of the reducer (7) is connected to a third flange (731), and the end of the low-speed shaft (8) close to the reducer (7) is connected to a fourth flange (81), the first flange (61) and the second flange (721) are fixedly connected, and the third flange (731) and the fourth flange (81) are fixedly connected.

7. A gypsum board stirring and mixing device according to claim 1, characterized in that: The centrifugal disk (4) comprises a rotating disk (41) and a rotating rod (42); the rotating rod (42) is coaxially arranged below the rotating disk (41); a first threaded hole (421) extending axially upward is formed on the bottom wall of the rotating rod (42); a threaded column (62) is coaxially connected to the top end of the high-speed shaft (6); and the threaded column (62) is connected to the first threaded hole (421); A second threaded hole (422) extending axially upward is formed on the bottom wall of the first threaded hole (421), the diameter of the second threaded hole (422) being relatively smaller than the diameter of the first threaded hole (421), and the spiral directions of the first threaded hole (421) and the second threaded hole (422) being opposite; The high-speed shaft (6) is provided with a through hole axially penetrating the high-speed shaft (6) and the threaded column (62), a bolt (43) being inserted into the through hole, the head of the bolt (43) being against the bottom end of the high-speed shaft (6), and the rod of the bolt (43) passing through the high-speed shaft (6) being connected to the second threaded hole (422).

8. A gypsum board mixing method, characterized in that: The gypsum board stirring and mixing method is performed using the gypsum board stirring and mixing device according to any one of claims 1 to 7, and the gypsum board stirring and mixing method comprises the following steps; Step 1: Add raw materials: Add solid materials to the top of the centrifugal disc through the solid material inlet, and at the same time, add liquid materials to the mixing chamber through the liquid material inlet, so that the liquid materials flow downward along the inner wall of the mixing chamber; Step 2: Disperse the solid materials: rotate the centrifugal disc at a higher speed than the stirring disc, and use the centrifugal force to evenly spread the solid materials to the edge area of ​​the stirring chamber; Step 3: Mixing and stirring: The stirring disc is rotated at a relatively low speed, and the stirring teeth on the stirring disc shear and stir the solid materials thrown to the edge and the liquid materials flowing down; Step 4: Discharge the mixture: After reaching the predetermined stirring time, discharge the slurry.

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