A drying device and method for preparing α-gypsum using titanium gypsum

Abstract

The present invention relates to the technical field of gypsum drying, and specifically discloses a drying device and method for preparing α-gypsum using titanium gypsum, including a base and a digital display control panel. Two parallel distribution vertical rods are provided on the base. An upper feeding shell assembly, a rotary drying shell assembly, a lower discharging shell assembly and a material receiving assembly are sequentially arranged from top to bottom between the two vertical rods. The rotary drying shell assembly includes a drying shell body. A drying dressing roller is rotatably arranged in the drying shell body. A first rotary drive motor for driving the drying dressing roller to rotate is arranged on the drying shell body. While drying the gypsum through the rotary drying shell assembly, the rotation of the drying dressing roller connects the upper feeding shell assembly and the lower discharging shell assembly together. During the feeding process of the upper feeding shell assembly and the discharging process of the lower discharging shell assembly, a sealed chamber is formed in the drying shell body. Thus, under the condition of continuous drying of the gypsum, the anti-dispersion protection of the hot air is realized, and energy is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum drying, and particularly relates to a drying device and method for preparing α-gypsum using titanium gypsum. Background Art

[0002] The crystal structure of α-type hemihydrate gypsum is stable and has a regular short columnar morphology, which makes it exhibit relatively high strength and hardness macroscopically. Compared with other types of gypsum, it usually has a higher density and a more suitable porosity, and the drying process can remove the moisture in the α-gypsum, making its crystal structure more dense. In subsequent use, this can improve the strength and hardness of gypsum products, enabling them to better withstand external forces.

[0003] An α-type hemihydrate gypsum horizontal autoclave with the publication number CN213977455U includes an autoclave body, and the autoclave body includes an outer autoclave body and an inner autoclave body, and the outer autoclave body is sleeved on the outer surface of the inner autoclave body; both ends of the autoclave body are respectively provided with a feed port end cover and a discharge port end cover; a heat-conducting oil pipe is arranged on the outer surface of the inner autoclave body, and the heat-conducting oil pipes are uniformly arranged on the outer surface of the inner autoclave body.

[0004] An α-type hemihydrate gypsum autoclave with the publication number CN201545787U includes a horizontal autoclave body, a feed end cover and a discharge end cover are arranged on the autoclave body, a hot oil heating device is installed on the inner cavity wall of the autoclave body, the hot oil heating device is connected to the outside of the autoclave body through a heat-conducting oil pipe, and a steam inlet, a steam discharge port and a water outlet are also arranged on the autoclave body; the α-type hemihydrate gypsum autoclave.

[0005] However, currently, most of the drying devices for gypsum use horizontal autoclaves for drying. After drying is completed, the autoclave cover is opened to take out the gypsum, which will cause a large amount of heat loss. Summary of the Invention

[0006] The purpose of the present invention is to provide a drying device and method for preparing α-gypsum using titanium gypsum to solve the above problems and overcome the defects of the prior art, as described in detail below.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A drying device for preparing α-gypsum using titanium gypsum provided by the present invention includes a base and a digital display control panel. Two parallel vertical rods are arranged on the base, and an upper feeding shell assembly, a rotary drying shell assembly, a lower discharging shell assembly and a material receiving assembly are sequentially arranged from top to bottom between the two vertical rods;

[0009] The rotary drying shell assembly includes a drying shell, a drying dressing roller is rotatably arranged inside the drying shell, a first rotary driving motor for driving the drying dressing roller to rotate is arranged on the drying shell, a heating pipeline assembly for supplying hot air into the drying shell is arranged on the drying shell, a scraping assembly for scraping the gypsum material on the outer side of the drying dressing roller is arranged on the drying shell, and the output end of the digital display control panel is electrically connected to the input end of the first rotary driving motor.

[0010] Preferably, a plurality of annular grooves are evenly distributed along the axial direction on the outer side of the drying dressing roller, the cross-sectional shape of the annular groove is V-shaped, the drying dressing roller is made of a heat-conducting material, a plurality of electric heaters are evenly distributed along the circumferential direction inside the drying dressing roller, and the output end of the digital display control panel is electrically connected to the input end of the electric heater.

[0011] Preferably, the scraping assembly includes a scraping rod arranged below the drying dressing roller, a scraper fitting the bottom contour of the drying dressing roller is arranged on the scraping rod, and electric telescopic rods for driving the scraping rod to move horizontally are arranged at both ends of the scraping rod, and the output end of the digital display control panel is electrically connected to the input end of the electric telescopic rod.

[0012] Preferably, the heating pipeline assembly includes main ventilation pipelines distributed on both sides of the drying shell, the main ventilation pipelines are fixedly arranged on the outer side wall of the drying shell through clamps, a plurality of jet branch pipes are evenly distributed along the length direction on the main ventilation pipelines, the air outlet ends of the jet branch pipes extend into the drying shell, a connecting pipeline is connected between the same ends of the two main ventilation pipelines, and a hot air inlet pipe joint is arranged on the connecting pipeline.

[0013] Preferably, the outer contour shape of the drying shell is a central shell shape that is wide in the middle and narrow at the upper and lower ends, installation cavities are formed inside the upper and lower sides of the drying shell, a second pressure relief valve and a temperature sensor are respectively arranged on both sides of the upper part of the drying shell, the second pressure relief valve and the temperature sensor are both installed in the upper installation cavity, the output end of the digital display control panel is electrically connected to the input end of the second pressure relief valve, and the output end of the temperature sensor is electrically connected to the input end of the digital display control panel.

[0014] Preferably, the upper feeding shell assembly includes a feeding shell, the lower side of the feeding shell is hermetically butted and connected to the upper side of the drying shell, a dressing hopper is arranged on the lower side of the feeding shell, the outer shape of the dressing hopper is a funnel shape that is wide at the top and narrow at the bottom, and a dressing notch for cooperating with the annular groove is arranged along the axial direction of the drying dressing roller at the bottom side of the dressing hopper.

[0015] Preferably, a pressure regulating pipeline, a pressure relief pipeline and a gypsum feeding pipeline are respectively connected to the top side of the feeding shell. A pressure sensor is arranged on the pressure relief pipeline, and a solenoid valve is arranged on the gypsum feeding pipeline. The output ends of the digital display control panel are respectively electrically connected to the input ends of the solenoid valve and the pressure sensor.

[0016] Preferably, the lower discharge shell assembly includes a discharge shell. The cross-sectional shape of the discharge shell is rectangular. A rotating chamber is formed in the discharge shell. A rotating shaft is rotatably arranged in the rotating chamber. More than three discharge vane plates evenly distributed around the rotating shaft are arranged on the outer side of the rotating shaft. A second rotating drive motor for driving the rotating shaft to rotate is fixedly arranged on the discharge shell. During the rotation of the discharge vane plates in the rotating chamber driven by the second rotating drive motor, at least two discharge vane plates are in sealing contact with the inner side wall of the rotating chamber. The output end of the digital display control panel is electrically connected to the input end of the second rotating drive motor.

[0017] Preferably, the material receiving assembly includes a material receiving box. Hydraulic cylinders symmetrically distributed around the material receiving box are arranged on both sides of the material receiving box. The hydraulic cylinders are fixedly arranged on the base. A push rod is fixedly arranged at the head end of the push rod of the hydraulic cylinder facing upward. Side edge plates are fixedly arranged on both sides of the top end of the material receiving box. Positioning clamping grooves for positioning and mating connection with the push rod are arranged on the lower side of the side edge plates. A pressing edge cover for mating connection with the upper opening of the material receiving box is fixedly arranged on the outer side of the bottom end of the discharge shell. The output end of the digital display control panel is electrically connected to the input end of the hydraulic cylinder.

[0018] A drying method for preparing α-gypsum from titanium gypsum includes the following steps:

[0019] S1: Open the solenoid valve, add gypsum from the gypsum feeding pipeline into the feeding shell for storage. When drying the gypsum, close the solenoid valve, and connect the pressure regulating pipeline with an external air pressure regulating device to realize the positive pressure and negative pressure in the feeding shell. When in positive pressure, the dressing hopper can dress the outside of the drying dressing roller. When in negative pressure, the dressing hopper stops discharging materials to the drying dressing roller.

[0020] S2: When the dressing hopper discharges materials to the outside of the drying dressing roller, the first rotating drive motor drives the drying dressing roller to rotate. During the rotation of the drying dressing roller, in cooperation with the dressing hopper, the gypsum can be unfolded and paved on the outside of the drying dressing roller. At this time, the heating pipeline assembly conveys hot air into the drying dressing roller to heat and dry the gypsum.

[0021] S3: In step S2, the electric heater arranged in the drying dressing roller can heat it, thereby realizing the double-sided heating and drying of the gypsum from the inside to the outside. Among them, the annular groove can realize the circulation of hot air and increase the laying area of the gypsum on the outside of the drying dressing roller.

[0022] S4: During the rotation of the drying dressing roller, when the drying dressing roller is being loaded at the dressing hopper and rotates to the scraping component, the gypsum is completely dried. The scraper scrapes off the gypsum on the outer surface of the drying dressing roller and it falls into the discharge housing. The gypsum accumulates in the discharge housing and the discharge vane rotates to deflect the gypsum downward and into the receiving box.

[0023] The beneficial effects are as follows:

[0024] 1. While drying the gypsum by rotating the drying shell assembly, the rotation of the drying dressing roller connects the upper feeding shell assembly and the lower discharge shell assembly. During the feeding process of the upper feeding shell assembly and the discharging process of the lower discharge shell assembly, a sealed chamber is formed in the drying shell, thereby realizing the protection against the dissipation of hot air during the continuous drying of the gypsum and saving energy.

[0025] 2. The annular groove can enable the circulation of hot air between the outer side of the drying dressing roller and the inner side of the drying shell, and increase the laying area of the gypsum on the outer side of the drying dressing roller.

[0026] 3. A channel for circulating hot air is formed between the outer side of the drying dressing roller and the inner side of the drying shell, so that when the gypsum adheres to the outer side of the drying dressing roller, the outer surface of the gypsum can be heated and dried. The electric heater can heat the drying dressing roller, thereby realizing the heating and drying of the bonding surface between the gypsum and the drying dressing roller. In the case of internal and external heating, the drying efficiency and uniformity of the gypsum can be greatly improved.

[0027] 4. The scraper can scrape the outer surface of the drying dressing roller during the rotation of the drying dressing roller, thereby scraping off the gypsum on the outer surface of the drying dressing roller.

[0028] 5. A dressing notch is provided on the lower side of the dressing hopper, which can fit with the annular groove provided on the outer side of the drying dressing roller, so that when laying the gypsum on the outer side of the drying dressing roller, the thickness of the gypsum can be uniform and consistent.

[0029] 6. During the rotation of the discharge vane driven by the second rotation drive motor, at least two discharge vanes can be in sealed contact with the inner side wall of the rotation chamber, thereby realizing the sealing of the discharge housing, preventing hot air from leaking out of the discharge housing, and as the height of the accumulated gypsum in the discharge housing increases, the sealing effect of the discharge housing becomes better and better. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0031] Figure 1 is the front view of the present invention;

[0032] Figure 2 is the Figure 1 left view of the present invention;

[0033] Figure 3 is the Figure 1 first-direction perspective view of the present invention;

[0034] Figure 4 is the Figure 1 A-A sectional view of the present invention;

[0035] Figure 5 is the Figure 2 B-B sectional view of the present invention;

[0036] Figure 6 is the Figure 5 partial enlarged view at C of the present invention;

[0037] Figure 7 is the Figure 1 second-direction perspective view of the present invention.

[0038] The description of the reference numerals is as follows: 1, base; 101, vertical rod; 2, rotary drying shell assembly; 201, drying shell; 202, drying dressing roller; 203, electric heater; 204, annular groove; 205, first rotary drive motor; 3, upper feeding shell assembly; 301, feeding shell; 302, pressure regulating pipeline; 303, pressure relief pipeline; 304, gypsum feeding pipeline; 305, solenoid valve; 306, air pressure sensor; 307, dressing hopper; 308, dressing notch; 4, lower discharging shell assembly; 401, discharging shell; 402, edge pressing cover; 403, rotary chamber; 404, discharging blade; 405, second rotary drive motor; 5, heating pipeline assembly; 501, main ventilation pipeline; 502, second pressure relief valve; 503, temperature sensor; 504, jet branch pipe; 505, connecting pipeline; 506, hot gas inlet pipe joint; 6, material receiving assembly; 601, material receiving box; 602, side edge plate; 603, hydraulic cylinder; 604, push rod; 7, digital display control panel; 8, scraping assembly; 801, scraping rod; 802, scraper; 803, electric telescopic rod. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope protected by the present invention.

[0040] Refer to Figures 1-7 As shown, the present invention provides a drying device for preparing α-gypsum using titanium gypsum, including a base 1 and a digital display control panel 7. Two parallel distribution vertical rods 101 are arranged on the base 1. An upper feeding shell assembly 3, a rotary drying shell assembly 2, a lower discharging shell assembly 4 and a material receiving assembly 6 are sequentially arranged between the two vertical rods 101 from top to bottom. The rotary drying shell assembly 2 includes a drying shell 201. A drying dressing roller 202 is rotatably arranged in the drying shell 201. A first rotary drive motor 205 for driving the drying dressing roller 202 to rotate is arranged on the drying shell 201. A heating pipe assembly 5 for supplying hot air into the drying shell 201 is arranged on the drying shell 201. A scraping assembly 8 for scraping the gypsum material outside the drying dressing roller 202 is arranged on the drying shell 201. The output end of the digital display control panel 7 is electrically connected to the input end of the first rotary drive motor 205.

[0041] See the attached Figure 4 、 Figure 5 and Figure 6 As shown, a plurality of annular grooves 204 evenly distributed along the axial direction are formed on the outer side of the drying dressing roller 202. The cross-sectional shape of the annular groove 204 is V-shaped. The drying dressing roller 202 is made of a heat-conducting material. A plurality of electric heaters 203 evenly distributed along the circumferential direction are arranged in the drying dressing roller 202. The output end of the digital display control panel 7 is electrically connected to the input end of the electric heater 203. In practical applications, a channel for circulating hot air is formed between the outer side of the drying dressing roller 202 and the inner side of the drying shell 201. Thus, when the gypsum adheres to the outer side of the drying dressing roller 202, the outer surface of the gypsum can be heated and dried, and the electric heater 203 can heat the drying dressing roller 202, thereby heating and drying the bonding surface between the gypsum and the drying dressing roller 202. In the case of internal and external heating, the drying efficiency and drying uniformity of the gypsum can be greatly improved.

[0042] See the attached Figure 4 、 Figure 5 and Figure 7As shown in the figure, the scraping component 8 includes a scraping rod 801 disposed below the drying dressing roller 202. A scraper 802 that fits the bottom contour of the drying dressing roller 202 is provided on the scraping rod 801. Electric telescopic rods 803 for driving the horizontal movement of the scraping rod 801 are provided at both ends of the scraping rod 801. The output end of the digital display control panel 7 is electrically connected to the input end of the electric telescopic rod 803. In practical applications, the scraper 802 can scrape the outer surface of the drying dressing roller 202 during the rotation of the drying dressing roller 202, so as to scrape off the plaster on the outer surface of the drying dressing roller 202.

[0043] See the attached drawings in the specification Figure 1 , Figure 4 and Figure 7 As shown in the figure, the heating pipeline component 5 includes main ventilation pipelines 501 distributed on both sides of the drying housing 201. The main ventilation pipelines 501 are fixedly arranged on the outer side wall of the drying housing 201 through clamps. A number of jet branch pipes 504 evenly distributed along the length direction are provided on the main ventilation pipelines 501. The air outlet ends of the jet branch pipes 504 extend into the drying housing 201. A connecting pipeline 505 is connected between the same ends of the two main ventilation pipelines 501. A hot gas inlet joint 506 is provided on the connecting pipeline 505. The outer contour shape of the drying housing 201 is a central housing shape that is wider in the middle and narrower at the upper and lower ends. Installation cavities are formed inside the upper and lower sides of the drying housing 201. A second pressure relief valve 502 and a temperature sensor 503 are respectively provided on both sides of the upper part of the drying housing 201. The second pressure relief valve 502 and the temperature sensor 503 are both installed in the upper installation cavity. The output end of the digital display control panel 7 is electrically connected to the input end of the second pressure relief valve 502, and the output end of the temperature sensor 503 is electrically connected to the input end of the digital display control panel 7.

[0044] The upper feeding shell component 3 includes a feeding shell 301. The lower side of the feeding shell 301 and the upper side of the drying housing 201 are hermetically butt-connected. A dressing hopper 307 is provided on the lower side of the feeding shell 301. The dressing hopper 307 has a funnel shape that is wider at the top and narrower at the bottom. A dressing notch 308 for cooperating with the annular groove 204 is axially opened at the bottom side of the dressing hopper 307 along the drying dressing roller 202. A pressure regulating pipeline 302, a pressure relief pipeline 303, and a gypsum feeding pipeline 304 are respectively connected to the top side of the feeding shell 301. A pressure sensor 306 is provided on the pressure relief pipeline 303, and an electromagnetic valve 305 is provided on the gypsum feeding pipeline 304. The output end of the digital display control panel 7 is electrically connected to the input ends of the electromagnetic valve 305 and the pressure sensor 306 respectively. Through the above specific structural design, due to the dressing notch 308 opened on the lower side of the dressing hopper 307, it can fit with the annular groove 204 opened on the outer side of the drying dressing roller 202, so that when laying gypsum on the outer side of the drying dressing roller 202, the thickness of the gypsum can be uniform and consistent with each other.

[0045] The lower discharge housing assembly 4 includes a discharge housing 401. The cross-sectional shape of the discharge housing 401 is rectangular. A rotating chamber 403 is formed inside the discharge housing 401. A rotating shaft is rotatably arranged inside the rotating chamber 403. More than three discharge vanes 404 are evenly distributed on the outer side of the rotating shaft with the rotating shaft as the center. A second rotating drive motor 405 for driving the rotating shaft to rotate is fixedly arranged on the discharge housing 401. During the process of the second rotating drive motor 405 driving the discharge vanes 404 to rotate inside the rotating chamber 403, at least two discharge vanes 404 are in sealing contact with the inner side wall of the rotating chamber 403. The output end of the digital display control panel 7 is electrically connected to the input end of the second rotating drive motor 405. Through the above specific structural design, during the process of the second rotating drive motor 405 driving the discharge vanes 404 to rotate, at least two discharge vanes 404 can be in sealing contact with the inner side wall of the rotating chamber 403, thereby realizing the sealing of the discharge housing 401, avoiding hot air from leaking out of the discharge housing 401, and as the height of the gypsum accumulating in the discharge housing 401 becomes higher and higher, the sealing effect of the discharge housing 401 is also getting better and better.

[0046] The material receiving assembly 6 includes a material receiving box 601. Hydraulic cylinders 603 are symmetrically distributed on both sides of the material receiving box 601 with the material receiving box 601 as the center. The hydraulic cylinders 603 are fixedly arranged on the base 1. A push rod 604 is fixedly arranged at the head end of the push rod of the hydraulic cylinder 603 facing upwards. Side edge plates 602 are fixedly arranged on both sides of the top end of the material receiving box 601. A positioning card slot for positioning and mating connection with the push rod 604 is opened on the lower side of the side edge plate 602. A pressing edge cover 402 for mating connection with the upper side opening of the material receiving box 601 is fixedly arranged on the outer side of the bottom end of the discharge housing 401. The output end of the digital display control panel 7 is electrically connected to the input end of the hydraulic cylinder 603. When the push rod of the hydraulic cylinder 603 extends, the push rod 604 is inserted into the positioning card slot. When the push rod of the hydraulic cylinder 603 continues to extend, it pushes the material receiving box 601 to move upwards, thereby realizing the docking and sealing between the pressing edge cover 402 and the upper side opening of the material receiving box 601, which can avoid the powdered gypsum from escaping outwards after drying. During discharging, the push rod of the hydraulic cylinder 603 retracts, thereby driving the material receiving box 601 to move downwards, so that the material receiving box 601 is separated from the discharge housing 401, and the push rod 604 is separated from the positioning card slot. After the material receiving box 601 falls on the base 1, the material receiving box 601 can be moved for discharging.

[0047] The working principle and technical effect of the present invention:

[0048] When drying gypsum, the solenoid valve 305 is opened, and the gypsum is added from the gypsum feeding pipe 304 into the feeding housing 301 for storage. During this process, the added gypsum is α-gypsum with a certain amount of moisture added and having viscosity. When drying the gypsum, the solenoid valve 305 is closed, and the pressure regulating pipe 302 is connected to an external air pressure regulating device, enabling positive pressure and negative pressure inside the feeding housing 301. When in positive pressure, the dressing hopper 307 can dress the outside of the drying dressing roller 202. When in negative pressure, the dressing hopper 307 stops discharging materials to the drying dressing roller 202; when the dressing hopper 307 discharges materials towards the outside of the drying dressing roller 202, the first rotary drive motor 205 drives the drying dressing roller 202 to rotate. During the rotation of the drying dressing roller 202, in cooperation with the dressing hopper 307, the gypsum can be unfolded and flattened on the outside of the drying dressing roller 202. At this time, the heating pipe assembly 5 conveys hot air into the drying dressing roller 202 to heat and dry the gypsum; the electric heater 203 provided inside the drying dressing roller 202 can heat it, thereby realizing double-sided heating and drying of the gypsum from the inside to the outside. Among them, the annular groove 204 can realize the circulation of hot air and increase the laying area of the gypsum on the outside of the drying dressing roller 202; during the rotation of the drying dressing roller 202, when the drying dressing roller 202 is feeding at the dressing hopper 307 and rotates to the scraping assembly 8, the gypsum is dried, and the gypsum on the outer surface of the drying dressing roller 202 is scraped clean by the scraper 802 and falls into the discharge housing 401. The gypsum accumulates in the discharge housing 401, and the discharge vane 404 rotates to push the gypsum downward and into the receiving box 601.

[0049] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A drying device for preparing α-gypsum using titanium gypsum, characterized in that: It includes a base (1) and a digital display control panel (7). Two parallel distribution vertical rods (101) are arranged on the base (1). An upper feeding shell assembly (3), a rotary drying shell assembly (2), a lower discharging shell assembly (4) and a material receiving assembly (6) are successively arranged from top to bottom between the two vertical rods (101); The rotary drying shell assembly (2) includes a drying shell body (201). A drying dressing roller (202) is rotatably arranged in the drying shell body (201). A first rotary drive motor (205) for driving the drying dressing roller (202) to rotate is arranged on the drying shell body (201). A heating pipeline assembly (5) for supplying hot air into it is arranged on the drying shell body (201). A scraping assembly (8) for scraping the gypsum material on the outer side of the drying dressing roller (202) is arranged on the drying shell body (201). The output end of the digital display control panel (7) is electrically connected to the input end of the first rotary drive motor (205); A plurality of annular grooves (204) evenly distributed along the axial direction are formed on the outer side of the drying dressing roller (202). The cross-sectional shape of the annular groove (204) is V-shaped. The drying dressing roller (202) is made of a heat-conducting material. A plurality of electric heaters (203) evenly distributed along the circumferential direction are arranged in the drying dressing roller (202). The output end of the digital display control panel (7) is electrically connected to the input end of the electric heater (203); The lower discharging shell assembly (4) includes a discharging shell body (401). The cross-sectional shape of the discharging shell body (401) is rectangular. A rotary chamber (403) is formed in the discharging shell body (401). A rotating shaft is rotatably arranged in the rotary chamber (403). More than three discharging blade plates (404) evenly distributed with the rotating shaft as the center are arranged on the outer side of the rotating shaft. A second rotary drive motor (405) for driving the rotating shaft to rotate is fixedly arranged on the discharging shell body (401). During the process that the second rotary drive motor (405) drives the discharging blade plates (404) to rotate in the rotary chamber (403), at least two discharging blade plates (404) are in sealing contact with the inner side wall of the rotary chamber (403). The output end of the digital display control panel (7) is electrically connected to the input end of the second rotary drive motor (405); The upper feeding shell assembly (3) includes a feeding shell body (301). The lower side of the feeding shell body (301) and the upper side of the drying shell body (201) are hermetically butt-connected. A dressing hopper (307) is arranged on the lower side of the feeding shell body (301). The outer shape of the dressing hopper (307) is a funnel shape with a wider upper part and a narrower lower part. A dressing notch (308) for cooperating with the annular groove (204) is formed along the axial direction of the drying dressing roller (202) at the bottom side of the dressing hopper (307); The top side of the feeding housing (301) is respectively connected with a pressure regulating pipeline (302), a pressure relief pipeline (303) and a gypsum feeding pipeline (304). A pressure sensor (306) is arranged on the pressure relief pipeline (303), and a solenoid valve (305) is arranged on the gypsum feeding pipeline (304). The output end of the digital display control panel (7) is respectively electrically connected to the input ends of the solenoid valve (305) and the pressure sensor (306). The pressure regulating pipeline (302) is connected to an external air pressure regulating device, and can realize positive pressure and negative pressure inside the feeding housing (301); While the rotary drying shell assembly (2) dries the gypsum, the rotation of the drying dressing roller (202) connects the upper feeding shell assembly (3) and the lower discharging shell assembly (4) together. The feeding process of the upper feeding shell assembly (3) and the discharging process of the lower discharging shell assembly (4) will form a seal for the drying housing (201). Thus, in the case of continuously drying the gypsum, the anti-dispersion protection of the hot air can be realized.

2. The drying device for preparing α-gypsum using titanium gypsum according to claim 1, wherein: The scraping assembly (8) includes a scraping rod (801) arranged below the drying dressing roller (202). A scraper (802) that fits the bottom contour of the drying dressing roller (202) is arranged on the scraping rod (801). Electric telescopic rods (803) for driving the horizontal movement of the scraping rod (801) are arranged at both ends of the scraping rod (801). The output end of the digital display control panel (7) is electrically connected to the input end of the electric telescopic rod (803).

3. The drying device for preparing α-gypsum using titanium gypsum according to claim 1, wherein: The heating pipeline assembly (5) includes main ventilation pipelines (501) distributed on both sides of the drying housing (201). The main ventilation pipelines (501) are fixedly arranged on the outer side wall of the drying housing (201) through clamps. A number of jet branch pipes (504) evenly distributed along the length direction are arranged on the main ventilation pipelines (501). The air outlet ends of the jet branch pipes (504) extend into the drying housing (201). A connecting pipeline (505) is connected between the same ends of the two main ventilation pipelines (501). A hot air inlet pipe joint (506) is arranged on the connecting pipeline (505).

4. The drying device for preparing α-gypsum using titanium gypsum according to claim 3, wherein: The outer contour of the drying housing (201) is in the shape of a central housing that is wider in the middle and narrower at the upper and lower ends. Installation cavities are formed inside the upper and lower sides of the drying housing (201). A second pressure relief valve (502) and a temperature sensor (503) are respectively arranged on both sides of the upper part of the drying housing (201). The second pressure relief valve (502) and the temperature sensor (503) are both installed in the installation cavity above. The output end of the digital display control panel (7) is electrically connected to the input end of the second pressure relief valve (502). The output end of the temperature sensor (503) is electrically connected to the input end of the digital display control panel (7).

5. The drying device for preparing α-gypsum using titanium gypsum according to claim 1, wherein: The material receiving component (6) includes a material receiving box (601). Hydraulic cylinders (603) symmetrically distributed centered on it are arranged on both sides of the material receiving box (601). The hydraulic cylinders (603) are fixedly arranged on the base (1). A push rod (604) is fixedly arranged at the head end of the push rod of the hydraulic cylinder (603) with the head end facing upward. Side edge plates (602) are fixedly arranged on both sides of the top end of the material receiving box (601). Positioning card slots for positioning and mating connection with the push rod (604) are formed on the lower side of the side edge plates (602). A pressing edge cover (402) for mating connection with the upper opening of the material receiving box (601) is fixedly arranged on the outer side of the bottom end of the discharge housing (401). The output end of the digital display control panel (7) is electrically connected to the input end of the hydraulic cylinder (603).

6. A drying method for preparing α-gypsum using titanium gypsum, which uses the drying device for preparing α-gypsum using titanium gypsum according to any one of the above claims 1-5, characterized in that: It includes the following steps: S1: Open the solenoid valve (305), add gypsum from the gypsum feeding pipeline (304) into the feeding housing (301) for storage. When drying the gypsum, close the solenoid valve (305), and connect the pressure regulating pipeline (302) to an external air pressure regulating device, so as to realize positive pressure and negative pressure in the feeding housing (301). When in positive pressure, the dressing hopper (307) can apply dressing to the outside of the drying dressing roller (202). When in negative pressure, the dressing hopper (307) stops discharging materials to the drying dressing roller (202). S2: When the dressing hopper (307) discharges materials to the outside of the drying dressing roller (202), the first rotary drive motor (205) drives the drying dressing roller (202) to rotate. During the rotation of the drying dressing roller (202), in cooperation with the dressing hopper (307), the gypsum can be unfolded and flattened on the outside of the drying dressing roller (202). At this time, the heating pipeline assembly (5) conveys hot air into the drying dressing roller (202) to heat and dry the gypsum. In step S2, the electric heater (203) arranged in the drying dressing roller (202) can heat it, thereby realizing double-sided heating and drying of the gypsum from the inside to the outside. Among them, the annular groove (204) can realize the circulation of hot air and increase the laying area of the gypsum on the outside of the drying dressing roller (202). S3: During the rotation of the drying dressing roller (202), the drying dressing roller (202) is fed with materials at the dressing hopper (307). When it rotates to the scraping component (8), the gypsum is dried, and the gypsum on the outer surface of the drying dressing roller (202) is scraped clean by the scraper (802) and falls into the discharge housing (401). The gypsum accumulates in the discharge housing (401), and the discharge blade (404) rotates to dial the gypsum downward and fall into the material receiving box (601).

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