A gypsum board mixer

Abstract

The application discloses a gypsum board mixing machine, which comprises a rack and a casing arranged on the rack, a rotating shaft and a rotor fixedly connected to the outer surface of the rotating shaft are arranged in the casing, a discharging opening is arranged at the bottom of the casing, and a discharging pipe in communication with the discharging opening is arranged at the bottom of the casing; a plurality of edge teeth are arranged at the edge of the rotor, an arc-shaped gap is arranged between two adjacent edge teeth, the number of the discharging openings is two, the discharging pipe is arranged between the two discharging openings, and the discharging opening and the discharging pipe are communicated through a connecting elbow pipe. The arc-shaped gap arranged between the edge teeth of the rotor can make the material mixing more uniform and the discharging faster, the two discharging openings and the discharging pipe are connected through the connecting elbow pipe during discharging, the spiral stirring paddle in the discharging pipe is driven to rotate while the rotor rotates, and the discharging is more uniform, so that the product quality is improved.

Description

Technical Field

[0001] This invention relates to the field of mixing technology, and more specifically to a gypsum board mixing machine. Background Technology

[0002] A gypsum board mixer is a device that mixes gypsum powder, water, and auxiliary materials. It blends and stirs various dry and wet raw materials in gypsum board production to create the slurry used in gypsum board production. The gypsum board mixer is a key piece of equipment in a gypsum board production line, playing a vital role in the quality and stability of the production line. During operation, the gypsum board mixer continuously feeds and discharges materials.

[0003] Existing gypsum board mixers have two discharge methods:

[0004] One type is side discharge, which pushes the material out from the side of the rotor. The disadvantage is that, due to the centrifugal force, the larger particles will be thrown out first, resulting in uneven mixing of the discharged material.

[0005] One method is bottom discharge, where the material is pushed out from the bottom of the rotor. The space between the rotor and the top cover of the machine casing is for mixing wet material and gypsum powder. Generally, to improve the discharge efficiency, two discharge ports are set at the bottom of the machine casing. The disadvantage is that, depending on the rotation direction of the rotor, the first discharge port discharges first and the second discharge port discharges later. This will result in a large discharge volume and high pressure from the first discharge port, while the discharge volume from the second discharge port will be reduced, making the weight and particle size of the material on both sides of the protective paper uneven.

[0006] In summary, existing gypsum board mixers cannot discharge materials at a uniform speed and evenly, resulting in uneven gypsum material distribution inside the produced gypsum boards. Summary of the Invention

[0007] The purpose of this invention is to provide a gypsum board mixer to solve the technical problem that existing gypsum board mixers cannot discharge materials at a uniform speed and uniformly, resulting in uneven gypsum material inside the gypsum board.

[0008] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0009] A gypsum board mixer includes a frame and a housing mounted on the frame. The housing contains a rotating shaft and a rotor fixedly connected to the outer surface of the rotating shaft. The bottom of the housing has a discharge port and a discharge pipe connected to the discharge port.

[0010] The rotor has multiple edge teeth on its edge, and an arc-shaped notch is formed between two adjacent edge teeth. The arc-shaped notch matches the edge of the feed port, so that the material on the rotor falls directly into the feed port from the arc-shaped notch.

[0011] The number of feeding ports is set to two, and the feeding pipe is set between the two feeding ports. The feeding ports and the feeding pipe are connected by a connecting bend.

[0012] The feed pipe is equipped with a spiral stirring paddle. The top of the spiral stirring paddle is fixedly connected to the bottom of the rotating shaft. When the rotating shaft rotates and drives the rotor to rotate, it also drives the spiral stirring paddle to rotate, so that the material falling from the connecting bend quickly falls to the bottom of the feed pipe.

[0013] Furthermore, a scraper is fixedly connected to the outer surface of the spiral mixing paddle. The cross-sectional shape of the scraper is set to arc. When the spiral mixing paddle rotates, thereby driving the scraper to rotate, the scraper will quickly move the material falling from the connecting bend to the center of the material pipe.

[0014] Furthermore, a guide tube is rotatably connected to the bottom of the feeding pipe. The guide tube is funnel-shaped, and a second motor is provided on one side of the guide tube. The second motor is connected to the guide tube by a belt. The output shaft of the second motor rotates, thereby causing the guide tube to rotate, so that the material falling from the feeding pipe falls evenly into the guide tube and is then guided downward.

[0015] Furthermore, multiple protruding strips are fixedly connected to the discharge port, and a discharge groove is formed between adjacent protruding strips. The distance between the discharge grooves is less than 6mm. The protruding strips are provided to prevent pieces larger than 6mm from being discharged from the discharge port.

[0016] Furthermore, a mounting plate is fixedly connected to one side of one of the edge teeth, and multiple comb teeth are fixedly connected to the bottom of the mounting plate. Grooves are provided between adjacent comb teeth, and the material on the feed chute is cleaned by the comb teeth.

[0017] Furthermore, the top of the convex strip is 2mm higher than the bottom of the inner wall of the housing, and the bottom of the comb teeth is higher than the bottom of the inner wall of the housing;

[0018] Both the protrusions and the comb teeth are set in an arc shape, and the center of the arc where the protrusions and the comb teeth are located is set on the straight line where the rotation axis is located;

[0019] The vertical cross-section of the groove is set to be semi-circular, and the vertical cross-section of the convex strip is set to be circular. The groove and the convex strip are matched in position, and the comb teeth are matched in position with the feeding groove. When the rotor rotates, it drives the comb teeth to rotate, thereby causing the groove to scrape off the material adhering to the convex strip, and causing the comb teeth to scrape off the material blocking the feeding groove.

[0020] Furthermore, a water inlet ring is provided inside the housing. The water inlet ring is disposed on the outer surface of the rotating shaft and is rotatably connected to the rotating shaft. Multiple inclined dispersion plates are fixedly connected to the water inlet ring. The distance between the bottom of the water inlet ring and the top of the rotor is 3-8mm. When the liquid falls onto the water inlet ring during rotation, due to the rotation of the water inlet ring, the liquid is evenly dispersed on the top of the rotor to form a water film, thereby preventing the gypsum slurry from forming on the rotor.

[0021] Furthermore, a scraper is fixedly connected to the outer surface of the water inlet ring. The scraper matches the top of the inner wall of the machine casing. When the water inlet ring rotates, it drives the scraper to rotate, thereby scraping off the material splashed on the top of the inner wall of the machine casing.

[0022] Furthermore, the frame is equipped with a first motor and a reduction motor. The first motor is fixedly connected to the rotating shaft, and the reduction motor is connected to the water inlet ring via a pulley. The rotor speed is adjusted by adjusting the output shaft speed of the first motor, and the water inlet ring speed is adjusted by adjusting the speed of the reduction motor, thereby adjusting the water inlet ring flow rate.

[0023] Furthermore, a viscosity sensor is installed inside the feeding pipe. Both the viscosity sensor and the geared motor are electrically connected to the controller. When the viscosity sensor detects that the viscosity of the material is greater than the set value, the controller increases the speed of the geared motor, thereby increasing the water intake. When the viscosity sensor detects that the viscosity of the material is less than the set value, the controller decreases the speed of the geared motor, thereby reducing the water intake.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] This invention features an arc-shaped notch between the rotor's edge teeth, which makes the material mix more evenly and discharge faster. During discharge, a connecting bend connects the two discharge ports to a discharge pipe, and the rotor's rotation simultaneously drives the spiral stirring paddle inside the discharge pipe, resulting in more uniform discharge and improved product quality. Attached Figure Description

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 In this invention Figure 1 Sectional view of section AA';

[0029] Figure 3 This is a comparison diagram of the edge tooth structure in the prior art and the edge tooth structure in this application;

[0030] Figure 4 For the present invention Figure 2 Sectional view of the middle BB' section;

[0031] Figure 5 This is a schematic diagram of the connection structure between the feed pipe and the connecting bend in this invention;

[0032] Figure 6 This is a top view of the scraper of the present invention;

[0033] Figure 7 This is a schematic diagram of the connection structure of the electrical components in this invention.

[0034] The labels in the diagram represent the following:

[0035] 1-Frame; 2-Housing; 3-Rotating shaft; 4-Rotor; 5-Discharge port; 6-Discharge pipe; 7-Side teeth; 8-Arc-shaped notch; 9-Connecting bend; 10-Helical agitator; 11-Scraper; 12-Guide pipe; 13-Second motor; 14-Protruding strip; 15-Discharge trough; 16-Mounting plate; 17-Comb teeth; 18-Groove; 19-Water inlet ring; 20-Dispersion plate; 21-Scraper strip; 22-First motor; 23-Gear motor; 24-Viscosity sensor; 25-Controller. Detailed Implementation

[0036] The technical solutions of 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.

[0037] Because existing gypsum board mixers cannot discharge material at a uniform speed and evenly, the gypsum material inside the gypsum board produced is not uniform enough. Therefore, it is necessary to develop a mixer that can discharge material evenly.

[0038] like Figure 1 and Figure 2 As shown, the present invention provides a gypsum board mixer, which mainly achieves rapid and uniform material discharge through the arc-shaped notch 8 on the rotor 4, the connecting bend 9 connecting the discharge pipe 6 and the discharge port 5, and the spiral stirring paddle 10 rotating synchronously with the rotor 4.

[0039] The gypsum board mixer includes a frame 1 and a housing 2 mounted on the frame 1. The housing 2 contains a rotating shaft 3 and a rotor 4 fixedly connected to the outer surface of the rotating shaft 3. The bottom of the housing 2 has a discharge port 5 and a discharge pipe 6 connected to the discharge port 5.

[0040] The rotor 4 has multiple edge teeth 7 on its edge, and an arc-shaped notch 8 is provided between two adjacent edge teeth 7. The arc-shaped notch 8 matches the edge of the feed port 5, so that the material on the rotor 4 falls directly into the feed port 5 from the arc-shaped notch 8.

[0041] The number of the discharge port 5 is set to two, and the discharge pipe 6 is arranged between the two discharge ports 5. The discharge port 5 and the discharge pipe 6 are connected by a connecting bend 9.

[0042] The feed pipe 6 is equipped with a spiral stirring paddle 10. The top of the spiral stirring paddle 10 is fixedly connected to the bottom of the rotating shaft 3. When the rotating shaft 3 rotates and drives the rotor 4 to rotate, it also drives the spiral stirring paddle 10 to rotate, so that the material falling from the connecting bend 9 falls quickly to the bottom of the feed pipe 6.

[0043] The existing rotor 4 has trapezoidal teeth 7 with straight edges. Since the discharge port 5 is circular, the recess between adjacent teeth 7 is larger than the diameter of the discharge port 5. The material on the rotor 4 falls into the recess between adjacent teeth 7 instead of falling directly into the discharge port 5, resulting in slower discharge. It also causes the material that should be discharged to stay in the recess between adjacent teeth 7 again, making the material more prone to solidification. This application has a circular notch that matches the size of the discharge port 5, which can make the discharge faster. The arc-shaped notch 8 fits the edge of the discharge pipe 6. When the teeth 7 on the rotor 4 pass through the discharge pipe 6, they can push the slurry completely to the discharge pipe 6 and discharge the slurry, allowing the slurry to enter the discharge pipe 6 in the shortest possible time.

[0044] If the discharge port 5 is set to one, all the material can only be squeezed into one piece and discharged from one discharge port 5. The discharge efficiency is low, and the material that enters first will spend a longer time inside the casing 2. This will shorten the initial setting time of the material coming out of the discharge port 5, resulting in an increase in the phenomenon of lumps falling off.

[0045] Therefore, in order to improve discharge efficiency and avoid shortening the initial setting time of the material, two discharge ports 5 are set up. According to the direction of rotation, the first discharge port 5 discharges a portion first, and the second discharge port 5 discharges in sequence. However, the existing two discharge ports 5 are directly connected to two discharge pipes 6. The gypsum slurry is discharged from two positions onto the facing paper. During the mixing process, due to the rotation of the rotor 4, the particle size on the left and right sides of the machine casing 2 will be different, and the amount of slurry on the left and right positions will also be different. If the two discharge ports 5 directly discharge the slurry to the two positions on the facing paper, then the particle size and amount of slurry on the left and right positions on the facing paper will be inconsistent. Generally, the larger particles will be biased to one side, and the smaller particles will be biased to the other side. At the same time, when the rotor 4 pushes to the first discharge port 5, there is more gypsum slurry and the impact force is greater. When the rotor 4 pushes to the second discharge port 5, there is less gypsum slurry and the impact force is smaller, which makes the discharge amount of the two discharge pipes 6 uneven.

[0046] Statistics show that the weight difference of the slurry on the left and right sides of 1 square meter of facing paper is 0.1 kg, which makes one side of the gypsum board heavier and the other side lighter. The slurry particles on one side are larger and the slurry particles on the other side are smaller, resulting in uneven gypsum board production. This is a problem that is currently difficult to solve in gypsum board production.

[0047] After the material is rapidly discharged through the arc-shaped notch 8, the two circular discharge ports 5 allow the slurry to converge from two directions into the central discharge pipe 6 for mixing. This process mitigates the high-speed centrifugal force exerted by the rotor 4 during slurry discharge, resulting in a more uniform density of the mixed slurry and significantly improving the balance between the heavier and lighter sides. Simultaneously with the rotation of the rotor 4, the spiral agitator 10 also rotates, rapidly discharging the material from the connecting bend 9 to the bottom of the discharge pipe 6 and further agitating the falling material, ensuring even mixing.

[0048] To facilitate a faster flow of the material falling from the connecting bend 9 into the lower feed pipe 6, further, such as Figure 5 and Figure 6 As shown, a scraper 11 is fixedly connected to the outer surface of the spiral agitator 10. The cross-sectional shape of the scraper 11 is arc-shaped. When the spiral agitator 10 rotates, thereby driving the scraper 11 to rotate, the scraper 11 moves the material falling from the connecting bend 9 to the center of the lower feed pipe 6 quickly. By providing the scraper 11, the falling speed of the material into the lower feed pipe 6 is increased.

[0049] To ensure that the material falling from the feed pipe 6 lands more evenly on the protective paper, further steps are taken, such as... Figure 1 and Figure 5As shown, a guide tube 12 is rotatably connected to the bottom of the feeding pipe 6. The guide tube 12 is funnel-shaped, and a second motor 13 is provided on one side of the guide tube 12. The second motor 13 is connected to the guide tube 12 via a belt. The output shaft of the second motor 13 rotates, thereby causing the guide tube 12 to rotate, so that the material falling from the feeding pipe 6 falls evenly into the guide tube 12 and is then guided downwards. The guide tube 12 rotates at a constant speed, and the material falling from the feeding pipe 6 falls evenly into the guide tube 12, and then onto the protective paper.

[0050] The gypsum slurry has a very short setting time, with an initial setting time of 30 seconds and a final setting time of 3 minutes. If it clumps during the initial setting, it will eventually form very hard lumps that will fall onto the facing paper. After the slurry is loaded between two layers of facing paper, it will pass through pressure blocks with a spacing of 7-9mm to ensure that the slurry is spread evenly. However, lumps larger than 7mm cannot pass through the gaps under the pressure blocks and will eventually scratch or tear the facing paper, preventing the facing paper from being transported smoothly and causing machine downtime. Therefore, it is necessary to prevent large lumps from falling onto the facing paper.

[0051] Multiple protruding strips 14 are fixedly connected to the feed port 5, and a feed groove 15 is formed between adjacent protruding strips 14. The spacing between the feed grooves 15 is less than 6mm. The protruding strips 14 are provided to prevent pieces larger than 6mm from falling out of the feed port 5, thus avoiding paper breakage and machine shutdown caused by falling pieces in the mixer.

[0052] After the large-sized drop block is blocked by the convex strip 14, the drop block is broken by the rotor 4 due to the high speed rotation of the rotor 4. When the size of the broken drop block is smaller than the distance between adjacent convex strips 14, the drop block falls from the feed port 5 onto the protective paper. Since the size of the drop block is small, it will not affect the conveying of the protective paper and will not cause the machine to stop, making the pulp in the protective paper more uniform.

[0053] Because short glass fibers are added to the gypsum board slurry, the short glass fibers can easily clog the feeding trough 15. To solve this problem, an installation plate 16 is fixedly connected to one side of one of the edge teeth 7. Multiple comb teeth 17 are fixedly connected to the bottom of the installation plate 16. A groove 18 is provided between adjacent comb teeth 17. The material on the feeding trough 15 is cleaned by the comb teeth 17.

[0054] The top of the protrusion 14 is 2mm higher than the bottom of the inner wall of the housing 2, and the bottom of the comb teeth 17 is higher than the bottom of the inner wall of the housing 2.

[0055] Both the protrusion 14 and the comb teeth 17 are set in an arc shape, and the center of the arc of the protrusion 14 and the comb teeth 17 is set on the straight line of the rotation axis 3.

[0056] The groove 18 has a semi-circular vertical cross-section, and the convex strip 14 has a circular vertical cross-section. The groove 18 and the convex strip 14 are matched in position, and the comb teeth 17 are matched in position with the feeding groove 15. When the rotor 4 rotates, it drives the comb teeth 17 to rotate, thereby causing the groove 18 to scrape off the material adhering to the convex strip 14, and causing the comb teeth 17 to scrape off the material blocking the feeding groove 15.

[0057] The rotation of rotor 4 drives the comb 17 to rotate, thus cleaning the material adhering to the protrusion 14 and the feeding groove 15. Then, the material is broken up by rotor 4. When rotor 4 rotates once, comb 17 can clean the partition once, so that the glass fiber in the auxiliary material will not clog the partition.

[0058] Gypsum mortar clumps easily, clumping approximately every 30 seconds and then again after 3 minutes, resulting in uneven output. To address this issue, further measures are needed, such as... Figure 2 As shown, a water inlet ring 19 is provided inside the housing 2. The water inlet ring 19 is disposed on the outer surface of the rotating shaft 3 and is rotatably connected to the rotating shaft 3. Multiple inclined dispersion plates 20 are fixedly connected to the water inlet ring 19. The distance between the bottom of the water inlet ring 19 and the top of the rotor 4 is 3-8 mm. When liquid falls onto the water inlet ring 19 during rotation, the liquid is evenly dispersed on the top of the rotor 4 to form a water film due to the rotation of the water inlet ring 19, thereby preventing the gypsum slurry on the rotor 4 from clumping. Due to the wetting effect of the water film formed by the water inlet ring 19, the gypsum slurry is less likely to clump on the rotor 4.

[0059] During the mixing process of the material by rotor 4, the material splashes onto the top of the inner wall of the casing 2. Since gypsum slurry is prone to clumping, clumps form on the top of the inner wall of casing 2. To solve this problem, a scraper 21 is fixedly connected to the outer surface of the water inlet ring 19. The scraper 21 matches the top of the inner wall of casing 2. When the water inlet ring 19 rotates, it drives the scraper 21 to rotate, thereby scraping away the splashed material from the top of the inner wall of casing 2. The rotation of the scraper 21 scrapes away the material from the top of the inner wall of casing 2, preventing clumps from forming and facilitating uniform discharge.

[0060] The frame 1 is equipped with a first motor 22 and a reduction motor 23. The first motor 22 is fixedly connected to the rotating shaft 3, and the reduction motor 23 is connected to the water inlet ring 19 through a pulley. The rotation speed of the rotor 4 is adjusted by adjusting the output shaft speed of the first motor 22, and the rotation speed of the water inlet ring 19 is adjusted by adjusting the speed of the reduction motor 23, thereby adjusting the water inlet flow rate of the water inlet ring 19.

[0061] In order to automatically regulate the water intake and make the discharge more uniform, a viscosity sensor 24 is further installed in the feed pipe 6. The viscosity sensor 24 and the reduction motor 23 are both electrically connected to the controller 25. When the viscosity sensor 24 detects that the viscosity of the material is greater than the set value, the controller 25 increases the speed of the reduction motor 23, thereby increasing the water intake. When the viscosity sensor 24 detects that the viscosity of the material is less than the set value, the controller 25 decreases the speed of the reduction motor 23, thereby reducing the water intake.

[0062] Viscosity sensor 24 is an SPC / L393 online viscosity sensor 24.

[0063] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A gypsum board mixer, characterized in that, It includes a frame (1) and a housing (2) mounted on the frame (1). The housing (2) contains a rotating shaft (3) and a rotor (4) fixedly connected to the outer surface of the rotating shaft (3). The bottom of the housing (2) has a discharge port (5) and a discharge pipe (6) connected to the discharge port (5). The rotor (4) has multiple edge teeth (7) on its edge, and an arc-shaped notch (8) is provided between two adjacent edge teeth (7). The arc-shaped notch (8) matches the edge of the feed port (5), so that the material on the rotor (4) falls directly from the arc-shaped notch (8) into the feed port (5). The number of the discharge port (5) is set to two, and the discharge pipe (6) is set between the two discharge ports (5). The discharge port (5) and the discharge pipe (6) are connected by a connecting bend (9). The feed pipe (6) is equipped with a spiral stirring paddle (10). The top of the spiral stirring paddle (10) is fixedly connected to the bottom of the rotating shaft (3). When the rotating shaft (3) rotates and drives the rotor (4) to rotate, it also drives the spiral stirring paddle (10) to rotate, so that the material falling from the connecting bend (9) falls quickly to the bottom of the feed pipe (6).

2. The gypsum board mixer according to claim 1, characterized in that, A scraper (11) is fixedly connected to the outer surface of the spiral stirring paddle (10). The cross-sectional shape of the scraper (11) is set to arc. When the spiral stirring paddle (10) rotates, thereby driving the scraper (11) to rotate, the scraper (11) will move quickly from the material falling from the connecting bend (9) to the center of the lower material pipe (6).

3. A gypsum board mixer according to claim 2, characterized in that, The bottom of the feeding pipe (6) is rotatably connected to a guide pipe (12). The guide pipe (12) is funnel-shaped. A second motor (13) is provided on one side of the guide pipe (12). The second motor (13) is connected to the guide pipe (12) by a belt. The output shaft of the second motor (13) rotates, thereby causing the guide pipe (12) to rotate, so that the material falling from the feeding pipe (6) falls evenly into the guide pipe (12) and is then guided downward.

4. A gypsum board mixer according to claim 1, characterized in that, Multiple protrusions (14) are fixedly connected to the discharge port (5), and a discharge groove (15) is formed between adjacent protrusions (14). The distance between the discharge grooves (15) is less than 6mm. The protrusions (14) are provided to prevent pieces larger than 6mm from being discharged from the discharge port (5).

5. A gypsum board mixer according to claim 4, characterized in that, An mounting plate (16) is fixedly connected to one side of one of the edge teeth (7). Multiple comb teeth (17) are fixedly connected to the bottom of the mounting plate (16). A groove (18) is provided between adjacent comb teeth (17). The material on the feed trough (15) is cleaned by the comb teeth (17).

6. A gypsum board mixer according to claim 5, characterized in that, The top of the protrusion (14) is 2mm higher than the bottom of the inner wall of the housing (2), and the bottom of the comb teeth (17) is higher than the bottom of the inner wall of the housing (2); The protruding strip (14) and the comb teeth (17) are both set in an arc shape, and the center of the arc shape where the protruding strip (14) and the comb teeth (17) are located is set on the straight line where the rotating shaft (3) is located; The groove (18) has a semi-circular vertical cross section, and the convex strip (14) has a circular vertical cross section. The groove (18) and the convex strip (14) are matched in position, and the comb teeth (17) are matched in position with the feed trough (15). When the rotor (4) rotates, it drives the comb teeth (17) to rotate, thereby causing the groove (18) to scrape off the material adhering to the convex strip (14) and the comb teeth (17) to scrape off the material blocked in the feed trough (15).

7. A gypsum board mixer according to claim 1, characterized in that, The housing (2) is provided with a water inlet ring (19) inside. The water inlet ring (19) is set on the outer surface of the rotating shaft (3) and is rotatably connected to the rotating shaft (3). Multiple inclined dispersion plates (20) are fixedly connected to the water inlet ring (19). The bottom of the water inlet ring (19) is 3-8mm away from the top of the rotor (4). The liquid falls on the water inlet ring (19) during the rotation process. Due to the rotation of the water inlet ring (19), the liquid is evenly dispersed on the top of the rotor (4) to form a water film, thereby preventing the gypsum slurry on the rotor (4) from forming.

8. A gypsum board mixer according to claim 7, characterized in that, A scraper (21) is fixedly connected to the outer surface of the water inlet ring (19). The scraper (21) matches the top of the inner wall of the machine casing (2). When the water inlet ring (19) rotates, it drives the scraper (21) to rotate, thereby scraping off the material splashed on the top of the inner wall of the machine casing (2).

9. A gypsum board mixer according to claim 8, characterized in that, The frame (1) is equipped with a first motor (22) and a reduction motor (23). The first motor (22) is fixedly connected to the rotating shaft (3). The reduction motor (23) is connected to the water inlet ring (19) through a pulley. The rotation speed of the rotor (4) is adjusted by adjusting the output shaft speed of the first motor (22), and the rotation speed of the water inlet ring (19) is adjusted by adjusting the rotation speed of the reduction motor (23), thereby adjusting the water inlet flow of the water inlet ring (19).

10. A gypsum board mixer according to claim 9, characterized in that, The feed pipe (6) is equipped with a viscosity sensor (24). The viscosity sensor (24) and the geared motor (23) are both electrically connected to the controller (25). When the viscosity sensor (24) detects that the viscosity of the material is greater than the set value, the controller (25) increases the speed of the geared motor (23) to increase the water intake. When the viscosity sensor (24) detects that the viscosity of the material is less than the set value, the controller (25) reduces the speed of the geared motor (23) to reduce the water intake.

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