Semi-dry method gypsum slurry preparation device
By controlling the water addition amount and using a cage stirrer in the gypsum slurry preparation device, the problems of excessive water use and fast curing speed in the traditional gypsum pouring process are solved, low water production and efficient drying are achieved, and energy consumption and production are reduced. cost.
Patent Information
- Application Number
- CN202411578298.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2024-12-13
AI Technical Summary
Too much water consumption in traditional gypsum pouring processes leads to high drying costs and fast curing speed, making it difficult to control fluidity and bonding problems, resulting in low production efficiency and inability to be used for continuous pouring.
Develop a semi-dry gypsum slurry preparation device. By controlling the water addition amount to about 25%, using a cage stirrer and a spray device, the stable output and anti-blocking stirring of semi-fluidic gypsum slurry can be achieved, reducing the free water content and reducing the Drying cost.
Low water production of gypsum profiles has been achieved, reducing drying costs and energy consumption, and improving production efficiency and product quality.
Smart Images
Figure CN119116149A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a machine for preparing building materials, in particular to a semi-dry gypsum slurry preparation device. Background Art
[0002] Gypsum boards, gypsum blocks, etc. are common building materials. They are usually cast using the curing reaction principle of gypsum, that is, the main raw material gypsum powder (also known as semi-hydrated gypsum) is mixed with water to undergo a chemical reaction to generate solid water-insoluble dihydrate gypsum, which is also called the curing reaction of gypsum. The traditional gypsum molding scheme is called wet molding, because the theoretical water requirement for the gypsum curing molding reaction is 18.62%, but in actual casting production, the amount of water added must reach 70% so that the gypsum powder and water are mixed and stirred to generate a gypsum slurry with good fluidity, and then the gypsum slurry is injected into a continuous mold or a single mold for casting and shaping production. After curing, the gypsum building material is wet, with a free water content of more than 40%. A drying process must be set up to heat and dry it before it can be stored. The drying equipment consumes a lot of heat energy, and the drying cost reaches about 50% of the cost of gypsum building materials. The curing reaction of gypsum is very fast, from a liquid state with good fluidity to initial setting in only about 30-60 seconds. Once solidified into dihydrate gypsum, its chemical properties and physical properties are very stable at room temperature and pressure. Therefore, the process control time of casting production of gypsum building materials must be completed within the curing reaction time, otherwise the gypsum slurry will solidify uncontrollably, firmly bond related equipment, interrupt the production process, and be very difficult to clean. If you want to reduce the drying cost, the theoretical solution is to reduce the amount of water, but if the amount of water added is less than 60%, the fluidity of the gypsum slurry will be significantly reduced, and it will no longer have free fluidity. At the same time, the curing reaction time is shorter and more difficult to control. In the process of preparing gypsum slurry, curing problems will occur inside the mixing equipment, causing bonding problems of the internal parts of the mixing equipment. At present, there is a production process with a water consumption of about 50%, which can only be used to manufacture simple-shaped monomer gypsum building materials, cannot be used in continuous casting production, and has very low efficiency.
[0003] The invention discloses a semi-dry gypsum slurry preparation device, the core innovation of which is: a new type of gypsum slurry preparation device has been developed, which is based on β-gypsum powder, controls the amount of water added to about 25% when preparing the slurry, and can quickly stir it into a semi-fluid gypsum slurry. An anti-adhesion stirring cage agitator has been further developed, which can stably implement the stirring process, and does not produce adhesion due to local curing reactions, so that the semi-fluid gypsum slurry can be continuously and stably output from the inside of the stirring preparation device and spread flat. The free water content in the gypsum profile manufactured by this process is reduced by about half, so it is figuratively called a semi-dry process. Summary of the invention
[0004] A semi-dry gypsum slurry preparation device, comprising: a stirring device, a spreading device, a spraying device, and a mold belt; the stirring device is arranged at the upper right part of the mold belt, the spreading device is arranged above the mold belt, and the spraying device is arranged above the spreading device; The stirring device comprises: a stirring drum, a water injection pipe group, a feeding port, a power transmission shaft, a stirring motor, a chassis platform, a fixing frame, a lifting support, a discharging port, a discharging slideway, and a cage stirrer; The fixed frame is a rigid frame structure, and the upper part is a rigid plane structure; the mixing drum is a rigid cylindrical structure, and the mixing motor, the power transmission shaft and the mixing drum are arranged in parallel and side by side, and the three are fixed in position to each other and integrally installed on the chassis platform. The lower bottom surface of the chassis platform is a plane, and a plurality of lifting supports are installed on the lower bottom surface, and the lower part of the lifting supports is fixedly installed on the upper part of the fixed frame; A plurality of rows of water injection pipe groups are arranged on the top of the mixing drum, a feed port is arranged on the right end of the top, a discharge port is arranged on the left end of the bottom, a discharge slide is arranged below the discharge port, the lower outlet of the discharge slide is on the mold belt and is located on the right side of the spreading device, and the cage agitator is installed in the mixing drum.
[0005] A further solution is that the cage agitator comprises: a cage power shaft, a stirring shaft group, a scraper, a cylinder side baffle, and a fixed plate; and also comprises: an internal gear ring, a transmission gear, and a fixed gear; The fixed plate is a rigid circular plate structure, with two plates arranged in parallel on the left and right, and a diameter slightly smaller than the inner diameter of the mixing drum; the stirring shaft group is composed of a plurality of rigid cylindrical shafts, and the two ends of the cylindrical shafts are respectively rotatably connected to the two fixed plates, and the stirring shaft group is evenly distributed in a circular ring shape around the fixed plate, and the diameter of the circular ring is 2-3 cm smaller than the inner diameter of the mixing drum, and the two fixed plates and the stirring shaft group constitute a cage structure; The drum side baffle is a rigid circular plate structure, rigidly sealed and fixed on both sides of the mixing drum. Inside the mixing drum, the horizontal distance between the right fixed plate and the drum side baffle is less than 1 cm, and the horizontal distance between the left fixed plate and the drum side baffle is 3-5 cm; between the left fixed plate and the drum side baffle, an internal gear ring, a transmission gear, and a fixed gear are arranged to form a linkage structure; The cage power shaft is a rigid circular shaft, two of which are respectively fixed at the center of the outer side surfaces of the two fixing plates, and the two free ends pass through the center of the cylinder side baffle through the sealed bearing, and the free end heads are respectively provided with power transmission modules.
[0006] A further solution is that the inner gear ring is a circular internal gear structure, and between the left barrel side baffle and the fixed plate, the right end face of the inner gear ring and the left end face of the left fixed plate are concentrically fixedly connected, the left end face of the inner gear ring and the right end face of the left barrel side baffle are rotationally sealed and connected, the left end face of the fixed gear is fixedly mounted on the right end face of the left barrel side baffle, and a gap is maintained between the right end face of the fixed gear and the left end face of the fixed plate; the left end of the cylindrical shaft of the stirring shaft group passes through the left end face of the fixed plate through a sealed bearing, and a transmission gear is respectively installed on the shaft end of each cylindrical shaft, and the transmission gear is meshed with the fixed gear and the inner gear ring at the same time.
[0007] A further solution is that the scraper is a rigid and slender blade, the two ends of the blade are fixed on two fixed plates, the blade is tilted to point to the inner wall of the mixing drum, the gap between the blade and the inner wall is maintained at 1mm-2mm, the back of the blade is close to the mixing shaft of the mixing shaft group, and two scrapers are symmetrically arranged.
[0008] A further solution is that the power output shaft is a rigid long shaft, a power transmission module is arranged in the middle to connect the power output end of the stirring motor, and power transmission modules are arranged at both ends to connect the power transmission modules at both ends of the cage power shaft respectively.
[0009] A further solution is that the paving device 2 is a shaftless spiral structure, and from the middle to both ends of the paving device, it is a symmetrical reverse spiral structure.
[0010] A further solution is that the mold belt is a U-groove belt.
[0011] A further solution is that the discharge chute is made of rigid material, two side edges are provided with ribs, and the upper surface of the discharge chute and the ribs are tightly covered with smooth aluminum foil plates. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is the overall structure diagram of the present invention; Figure 2 This is the structural diagram of the stirring device; Figure 3 It is a schematic diagram of the cage agitator structure; Figure 4 Schematic diagram of cage stirrer drive. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0014] A semi-dry gypsum slurry preparation device, such as Figure 1 As shown, it comprises: a stirring device 1, a spreading device 2, a spraying device 3, and a mold belt 4; the stirring device 1 is arranged at the upper right part of the mold belt 4, the spreading device 2 is arranged above the mold belt 4, and the spraying device 3 is arranged above the spreading device 2, with the spraying port facing downward; The stirring device 1 is as Figure 2 As shown, it includes: a mixing drum 1-1, a water injection pipe group 1-2, a feed port 1-3, a power transmission shaft 1-4, a mixing motor 1-5, a chassis platform 1-6, a fixing frame 1-7, a lifting support 1-8, a discharge port 1-9, a discharge chute 1-10, and a cage agitator 1-11; The fixed frame 1-7 is a rigid frame structure, the bottom of which is fixed on the ground, and the upper part is a rigid plane structure; the mixing drum 1-1 is a rigid cylindrical structure, and the mixing motor 1-5, the power transmission shaft 1-4 and the mixing drum 1-1 are arranged in parallel and side by side, and the three are fixed in position with each other and installed as a whole on the chassis platform 1-6. The lower bottom surface of the chassis platform 1-6 is a plane, and a plurality of lifting supports 1-8 are installed on the lower bottom surface. The lower part of the lifting supports 1-8 is fixedly installed on the upper plane of the fixed frame 1-7. By adjusting the height difference of the lifting supports 1-8, the tilt angle of the mixing drum 1-1 can be controlled.
[0015] The top of the mixing drum 1-1 is provided with multiple rows of water injection pipe groups 1-2, the right end of the top is provided with a feed port 1-3, the left end of the bottom is provided with a discharge port 1-9, the lower part of the discharge port 1-10 is provided with a discharge slide 1-10 inclined, and the lower outlet of the discharge slide 1-10 is on the mold belt 4, such as Figure 1 As shown, and located on the right side of the spreading device 2, the cage agitator 1-11 is installed in the mixing drum 1-1.
[0016] The cage stirrer 1-11 is as Figure 3 As shown, it includes: a cage power shaft 111, a stirring shaft group 112, a scraper 113, a cylinder side baffle 114, and a fixing plate 115; Figure 4 As shown, it also includes: an inner gear ring 116, a transmission gear 117, and a fixed gear 118; The fixed plate 115 is a rigid circular plate structure, with two plates arranged in parallel on the left and right, and a diameter slightly smaller than the inner diameter of the mixing drum 1-1; the stirring shaft group 112 is composed of a plurality of rigid cylindrical shafts, and the two ends of the cylindrical shafts are rotatably connected to the two fixed plates 115 respectively, and the stirring shaft group 112 is evenly distributed in a circular ring shape around the fixed plate 115, and the diameter of the circular ring is 2-3 cm smaller than the inner diameter of the mixing drum 1-1, and the two fixed plates 115 and the stirring shaft group 112 form a cage structure; The drum side baffle 114 is a rigid circular plate structure, rigidly sealed and fixed on both sides of the mixing drum 1-1. Figure 3 In the mixing drum 1-1, the horizontal distance between the right fixing plate 115 and the drum side baffle 114 is less than 1 cm, and the horizontal distance between the left fixing plate 115 and the drum side baffle 114 is 3-5 cm; between the left fixing plate 115 and the drum side baffle 114, an internal gear ring 116, a transmission gear 117, and a fixed gear 118 are arranged to form a linkage structure; The cage power shaft 111 is a rigid circular shaft, two of which are respectively fixed at the center of the outer side surfaces of the two fixing plates 115, and the free ends pass through the center of the cylinder side baffle 114 through sealed bearings. Power transmission modules are respectively arranged at the heads of the free ends. The cage power shaft 111, the fixing plates 115 and the stirring shaft group 112 constitute a cage shaft structure, that is, the fixing plates 115 and the stirring shaft group 112 are fixed as a whole to form a cage structure, which can be driven to rotate by the cage power shaft 111.
[0017] like Figure 4 As shown, the inner gear ring 116 is a circular internal gear structure. Between the left barrel side baffle 114 and the fixed plate 115, the right end face of the inner gear ring 116 is concentrically fixedly connected with the left end face of the left fixed plate 115. The left end face of the inner gear ring 116 is rotationally sealed with the right end face of the left barrel side baffle 114. The left end face of the fixed gear 118 is fixedly mounted on the right end face of the left barrel side baffle 114. A gap is maintained between the right end face of the fixed gear 118 and the left end face of the fixed plate 115. The left end of the cylindrical shaft of the stirring shaft group 112 passes through the left end face of the fixed plate 115 through a sealed bearing. A transmission gear 117 is installed on the shaft end of each cylindrical shaft. The transmission gear 117 is meshed with the fixed gear 118 and the inner gear ring 116 at the same time. The effect of the above connection method is that the inner gear ring 116 and the cage structure are an integrated rotating mechanism, the fixed gear 118 and the drum side baffle 114 are always in a stationary state, the transmission gear 117 and the stirring shaft group 112 rotate synchronously, and at the same time, the transmission gear 117 drives the rotating shaft to rotate while meshing with the fixed gear 118 and the inner gear ring 116.
[0018] The scraper 113 is a rigid and slender blade, with both ends of the blade fixed on two fixed plates 115, the blade is tilted to point to the inner wall of the mixing drum 1-1, the gap between the blade and the inner wall is maintained at 1-2mm, the back of the blade is close to the mixing shaft of the mixing shaft group 112, and two scrapers 113 are symmetrically arranged.
[0019] The power output shaft 1-4 is a rigid long shaft, a power transmission module is arranged in the middle to connect the power output end of the stirring motor 1-5, and power transmission modules are arranged at both ends to connect the power transmission modules at both ends of the cage power shaft 111 respectively.
[0020] like Figure 1 As shown, the paving device 2 is a shaftless spiral structure, and from the middle to both ends of the paving device 2, it is a symmetrical reverse spiral structure.
[0021] The mold belt 4 is a U-shaped groove belt.
[0022] The discharging slideway is made of rigid material, with retaining edges arranged on two sides, and the upper surface and side edges of the slideway are tightly covered with smooth aluminum foil plates.
[0023] Example 1, gypsum slurry preparation: The raw materials are mixed, including β-gypsum powder, process water, wood fiber, and retarder; by weight, the raw materials are mixed as follows: 100 parts of β-gypsum powder, 25 parts of process water, 3 parts of wood fiber, and 0.5 parts of retarder; the solid raw materials include β-gypsum powder and wood fiber, which are mixed in proportion in the transfer bin and continuously transported to the feed port 1-3; the liquid raw materials include retarder and process water, which are mixed in proportion in the transfer water tank and continuously injected into the mixing drum 1-1 through multiple points of the water injection pipe group 1-2, and evenly fall onto the solid raw materials in the drum, so as to facilitate rapid and uniform mixing.
[0024] The power driving process is as follows: the stirring motor 1-5 drives the power transmission shaft 1-4 to rotate, and the power transmission shaft 1-4 drives the cage power shaft 111 at both ends of the cage agitator 1-11 to rotate synchronously through the power transmission modules at both ends, and then drives the fixed plates 115 at both ends to rotate synchronously, so as to realize the synchronous rotation of the stirring shaft group 112 in the mixing drum 1-1. The power transmission modules at both ends of the power transmission shaft 1-4 are used to simultaneously drive the cage power shaft 111 at both ends of the cage agitator 1-11, because the cage structure composed of the fixed plate 115 and the stirring shaft group 112 belongs to a combined rotating body, rather than an integrated rigid shaft body, that is, the torque bearing capacity of the combined rotating body is borne by the connection structure between the stirring shaft group 112 and the fixed frame 1-7, which is much lower than the torque bearing capacity of the integrated shaft relying on its own structure. Therefore, if only one end is driven, the cage structure will be twisted and deformed due to the large rotation resistance when transmitting torque, and the cage structure of the cage agitator 1-11 is driven synchronously at both ends, which greatly improves the torque bearing capacity of the cage structure.
[0025] When the stirring shaft group 112 in the mixing drum 1-1 rotates, the lifting support 1-8 is adjusted in height to make the mixing drum 1-1 in an inclined state, the feed port 1-3 end is lifted, and the discharge port 1-9 end is lowered. At this time, the solid raw material is continuously transported into the mixing drum 1-1 through the feed port 1-3, and the liquid raw material is simultaneously injected from the top of the mixing drum 1-1 into multiple points in the drum through multiple rows of water injection pipe groups 1-2, so as to achieve rapid and uniform stirring. The stirred gypsum slurry falls from the discharge port 1-9 by gravity, and falls to the middle position of the upper surface of the mold belt 4 through the discharge chute 1-10. The symmetrical reverse spiral structure of the spreading device 2 transports the gypsum slurry from the middle to both ends and spreads it flat. The discharge chute 1-10 is coated with aluminum foil because the gypsum slurry is sticky and the curing reaction is very fast. The slurry often has local curing and bonding problems on the discharge chute. Therefore, various materials such as tin foil, aluminum foil, and paint panels were experimented with to verify that the aluminum foil has the best smoothness and thermal expansion and contraction shape retention effect. The chute 1-10 is made of rigid material to maintain the tight coating effect of the aluminum foil. If the chute 1-10 is easily deformed by pressure, the aluminum foil will be permanently deformed. When the chute 1-10 is often irregularly deformed, the tight coating effect of the aluminum foil will be destroyed and corrugated deformation will occur. The passability of the slurry will deteriorate or local curing will occur.
[0026] Example 2, anti-adhesion stirring principle and process: When the stirring device is working, the core problem that needs to be solved is to prevent the gypsum slurry from remaining on the inner wall of the agitator and the mixing barrel. If the gypsum slurry remains, it will soon solidify and condense. Traditional stirring uses the center axis or blade shaft for self-rotation stirring. This stirring method is suitable for stirring liquid slurry with good fluidity or semi-liquid slurry with a long curing reaction time. For example, the curing reaction time of cement is in the order of hours, but the curing reaction of gypsum is in the order of seconds. If the traditional method is used to stir the semi-liquid gypsum slurry, it is very easy to produce adhesion and solidification on the center axis or blade shaft and the inner wall of the mixing barrel.
[0027] The present invention designs a cage stirrer 1-11 structure, each stirring shaft of the stirring shaft group 112 performs revolution stirring, and adopts multiple rows of water injection and gravity slurry dropping, so that the gypsum slurry is not easy to adhere to the stirring shaft, and the stirring process can be accelerated. Then, a self-rotating structure of a single stirring shaft is designed, such as Figure 4As shown, when the cage power shaft 111 drives the cage structure composed of the fixed plate 115 and the stirring shaft group 112 to rotate, the fixed plate 115 synchronously drives the inner gear ring 116 to rotate, and the fixed gear 118 is fixed on the static cylinder side baffle 114. Therefore, when the inner gear ring 116 rotates and the fixed gear 118 is stationary, the revolution motion of the stirring shaft group 112 is transmitted to the transmission gear 117, and the transmission gear 117 generates a "revolution + rotation" motion, wherein the revolution of the transmission gear 117 is the revolution of the stirring shaft group 112, and the rotation of the transmission gear 117 drives the connected stirring shaft to rotate, and the rotation of the stirring shaft further makes it difficult for the gypsum slurry to stick to the stirring shaft. The rotation of the stirring shaft in the present invention does not require the installation of an additional motor to drive the stirring shaft, which greatly simplifies the structure of the cage agitator 1-11 and saves energy consumption. At the same time, by controlling the transmission ratio among the inner gear ring 116, the transmission gear 117, and the fixed gear 118, the rotation speed of the stirring shaft can be controlled, and the most optimized anti-adhesion rotation speed can be used.
[0028] When the cage structure rotates, the scraper 113 rotates synchronously, scraping off the gypsum slurry attached to the inner wall of the mixing drum 1-1 in real time to prevent the slurry from remaining on the inner wall and solidifying. To prevent the slurry from remaining on the scraper 113, the scraper adopts a slender structure and is close to the mixing shaft. When the mixing shaft rotates, the slurry near the mixing shaft moves most violently, and the violent stirring makes it difficult for the slurry to remain on the scraper.
[0029] Embodiment 3, working process of spray device 3: In principle, the uniformity of semi-dry mixing and the thoroughness of curing reaction are lower than those of traditional wet molding. In the process of gypsum board molding, the surface quality of the board is prone to minor defects. Therefore, a spray device 3 is used to add a small amount of water to the gypsum slurry during the flattening process on the molding belt, especially to spray the surface of the flattened slurry to uniformly add water, so that the surface layer of the slurry produces a thorough curing reaction, thereby ensuring the surface quality of the gypsum board. The amount of water treated by the spray device 3 accounts for about 5% of the total water consumption. The spray device 3 is arranged above the spreading device 2, and also realizes real-time spray flushing of the shaftless spiral structure to avoid the problem of residual curing of slurry on the shaftless spiral structure.
[0030] The control technology in the present invention is a well-known technology.
[0031] Advantages: The invention has an ingenious structure, a high degree of automation, a low-water anti-adhesion stirring mechanism with remarkable innovation, good working stability, reduces stirring water consumption by about 30%, reduces energy consumption in subsequent drying processes by about 50%, and has obvious energy-saving and emission-reduction effects.
Claims
1. A semi-dry gypsum slurry preparation device, characterized in that: include: A stirring device (1), a spreading device (2), a spraying device (3), and a mold belt (4); the stirring device (1) is arranged at the upper right part of the mold belt (4), the spreading device (2) is arranged above the mold belt (4), and the spraying device (3) is arranged above the spreading device (2); The stirring device (1) comprises: a stirring drum (1-1), a water injection pipe group (1-2), a feed port (1-3), a power transmission shaft (1-4), a stirring motor (1-5), a chassis platform (1-6), a fixing frame (1-7), a lifting support (1-8), a discharge port (1-9), a discharge chute (1-10), and a cage stirrer (1-11); The fixed frame (1-7) is a rigid frame structure, and the upper part is a rigid plane structure; the mixing drum (1-1) is a rigid cylindrical structure; the mixing motor (1-5), the power transmission shaft (1-4) and the mixing drum (1-1) are arranged in parallel and in parallel, the three are fixed in position relative to each other, and are integrally mounted on a chassis platform (1-6); the lower bottom surface of the chassis platform (1-6) is a plane, and a plurality of lifting supports (1-8) are mounted on the lower bottom surface; the lower part of the lifting supports (1-8) is fixedly mounted on the upper part of the fixed frame (1-7); A plurality of rows of water injection pipe groups (1-2) are arranged on the top of the mixing drum (1-1), a feed port (1-3) is arranged on the right end of the top, a discharge port (1-9) is arranged on the left end of the bottom, a discharge slide (1-10) is arranged below the discharge port (1-9), a lower outlet of the discharge slide (1-10) is on the mold belt (4) and is located on the right side of the spreading device (2), and the cage agitator (1-11) is installed in the mixing drum (1-1).
2. A semi-dry gypsum slurry preparation device according to claim 1, characterized in that: The cage agitator (1-11) comprises: a cage power shaft (111), an agitator shaft group (112), a scraper (113), a cylinder side baffle (114), a fixing plate (115), an inner gear ring (116), a transmission gear (117), and a fixing gear (118); The fixed plate (115) is a rigid circular plate structure, two of which are arranged in parallel on the left and right, and the diameter of which is slightly smaller than the inner diameter of the mixing drum (1-1); the mixing shaft group (112) is composed of a plurality of rigid cylindrical shafts, the two ends of which are rotatably connected to the two fixed plates (115), the mixing shaft group (112) surrounds the fixed plate (115) and is evenly distributed in a circular ring shape, and the two fixed plates (115) and the mixing shaft group (112) form a cage structure; The drum side baffle (114) is a rigid circular plate structure and is rigidly sealed and fixed to both side ends of the mixing drum (1-1); an internal gear ring (116), a transmission gear (117), and a fixed gear (118) are arranged between the left fixed plate (115) and the drum side baffle (114) to form a linkage structure; The cage power shaft (111) is a rigid circular shaft, two of which are respectively fixed at the center of the outer side surfaces of the two fixing plates (115), and the two free ends pass through the center of the cylinder side baffle (114) via sealed bearings, and the heads of the free ends are respectively provided with power transmission modules.
3. A semi-dry gypsum slurry preparation device according to claim 1, characterized in that: The inner gear ring (116) is a circular inner gear structure. Between the left barrel side baffle (114) and the fixed plate (115), the right end face of the inner gear ring (116) and the left end face of the left fixed plate (115) are concentrically fixedly connected. The left end face of the inner gear ring (116) and the right end face of the left barrel side baffle (114) are rotationally sealed. The left end face of the fixed gear (118) is fixedly mounted on the right end face of the left barrel side baffle (114). A gap is maintained between the right end face of the fixed gear (118) and the left end face of the fixed plate (115). The left end of the cylindrical shaft of the stirring shaft group (112) passes through the left end face of the fixed plate (115) via a sealed bearing. A transmission gear (117) is respectively mounted on the shaft end of each cylindrical shaft. The transmission gear (117) is meshed with the fixed gear (118) and the inner gear ring (116) at the same time.
4. A semi-dry gypsum slurry preparation device according to claim 1, characterized in that: The scraper (113) is a rigid, slender blade, with both ends of the blade fixed on two fixed plates (115), the blade edge is tilted toward the inner wall of the mixing drum (1-1), and the back of the blade is close to the mixing shaft of the mixing shaft assembly (112). Two scrapers (113) are symmetrically arranged.
5. A semi-dry gypsum slurry preparation device according to claim 1, characterized in that: The power output shaft (1-4) is a rigid long shaft, with a power transmission module arranged in the middle to connect to the power output end of the stirring motor (1-5), and power transmission modules arranged at both ends to connect to the power transmission modules at both ends of the cage power shaft (111).
6. A semi-dry gypsum slurry preparation device according to claim 1, characterized in that: The paving device (2) is a shaftless spiral structure, and from the middle to both ends of the paving device (2), it is a symmetrical reverse spiral structure.
7. A semi-dry gypsum slurry preparation device according to claim 1, characterized in that: The mold belt (4) is a U-shaped groove belt.
8. The semi-dry gypsum slurry preparation device according to claim 1, characterized in that: The discharge chute (1-10) is made of a rigid material, and retaining edges are arranged on two side edges. The upper surface and side edges of the discharge chute (1-10) are tightly covered with smooth aluminum foil plates.