A gypsum block drying device with independent dust removal function

Abstract

The invention discloses a gypsum block drying device with an independent dust removal function, belonging to the technical field of gypsum block drying. The invention arranges multiple groups of rollers two distributed up and down inside a drying box, and each group of rollers two is equipped with a U-shaped air guide pipe with multiple air jet pipes, which replaces the traditional drying method of air intake at one end and air exhaust at the other end. During the slow transmission of the gypsum blocks in the drying box, the air intake pipe, the U-shaped air guide pipe and the air jet pipe are used to uniformly supply air to the transmission space at multiple points, and the ejected hot air directly contacts the gypsum blocks, so that each gypsum block is evenly heated and the drying effect is improved. A dust suction device is installed between each group of rollers two. While performing multi-point air supply, exhaust fans at multiple air guide covers are used for synchronous ventilation, so that the dust collection area is distributed at multiple points and dust is removed independently by the dust suction device, so that the dust collection surface is expanded, the dust removal effect is enhanced, and the drying effect is effectively avoided from being affected by uneven removal of dust inside the drying box.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum block drying, and more particularly to a gypsum block drying device with an independent dust removal function. Background Art

[0002] In recent years, with the increasing promotion of gypsum blocks, new wall materials have been increasingly used in the market. During the production and processing of gypsum blocks, the semi-finished gypsum blocks need to be dried.

[0003] During the drying process of gypsum blocks, the heated hot air is transported to the drying chamber to dry the gypsum board. The drying method of air intake at one end and exhaust at the other end is adopted. When the volume of the drying chamber is large, this simple ventilation method is difficult to achieve uniform contact between the gypsum blocks and the hot air, and the heating uniformity is still poor;

[0004] Secondly, a large amount of dust will be generated during the drying process, so traditional gypsum drying equipment is generally equipped with dust removal equipment. In the process of collecting dust, only the induced air duct is installed at the air outlet to guide the air flow and dust discharged from the drying to the dust removal equipment for filtration and treatment. However, this fixed and single dust removal method has a limited dust collection area, which can easily cause a large amount of dust to remain in the drying equipment, affecting the drying effect of the gypsum blocks.

[0005] Therefore, we propose a gypsum block drying device with independent dust removal function to address the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the existing practical problems. Compared with the prior art, a gypsum block drying device with an independent dust removal function is provided, in which a plurality of groups of rollers 2 are arranged in an upper and lower distribution inside a drying box, and each group of rollers 2 is equipped with a U-shaped air guide pipe with a plurality of air jet pipes, which replaces the traditional drying method of air intake at one end and air exhaust at the other end. During the slow transmission of the gypsum blocks in the drying box, the air intake pipe, the U-shaped air guide pipe and the air jet pipe are used to uniformly supply air to multiple points in the transmission space, and the ejected hot air directly contacts the gypsum blocks, so that each gypsum block is evenly heated and the drying effect is improved. A dust suction device is installed between each group of rollers 2. While supplying air at multiple points, exhaust fans at multiple air guide covers are used for synchronous ventilation, so that the dust collection area is distributed at multiple points and the dust is independently removed by the dust suction device, so as to expand the dust collection surface, enhance the dust removal effect, and effectively avoid the influence of uneven removal of dust inside the drying box on the drying effect.

[0007] The object of the present invention can be achieved by the following technical scheme: A gypsum block drying device with an independent dust removal function comprises a preheating box and a drying box which are arranged in a horizontal connection, and a conveyor belt for conveying gypsum blocks is provided at the outer ends of both boxes;

[0008] The preheating box and the drying box are respectively rotatably installed with multiple groups of rollers 1 and 2 distributed up and down, and the outer end walls of each group of rollers 2 arranged up and down and away from each other are sleeved with guide ring sleeves whose ends are fixedly installed with the inner wall of the drying box. The upper and lower sides of the outer end of the drying box are provided with air intake pipes, and the air intake pipes are fixedly connected with multiple U-shaped air intake pipes corresponding to the positions of the multiple groups of rollers 2. The inner ends of the U-shaped air intake pipes penetrate into the interior of the drying box and are fixedly connected with multiple air injection pipes that penetrate and extend to the inner side of the guide ring sleeve.

[0009] A dust suction space is reserved between two adjacent groups of rollers, and a dust suction device extending to the outside of the drying box is installed in the dust suction space. The dust suction device includes a dust guide box fixedly installed between the left and right guide ring sleeves, the top of the dust guide box passes through the drying box and is fixedly connected to a guide cover embedded in the end wall of the drying box, a filter assembly is installed between the dust guide box and the guide cover, and the upper and lower ends of the outer side of the drying box are provided with a collection pipe connected to the outer ends of multiple guide covers, and an exhaust fan is installed at the end of the guide cover close to the collection pipe.

[0010] Furthermore, the plurality of rollers 1 are evenly distributed in the preheating box, and the ends of roller 1 and roller 2 are rotatably connected to the inner walls of the preheating box and the drying box respectively through rotating shafts, and a transmission space consistent with the thickness of the gypsum blocks is reserved between the pair of rollers 1 distributed up and down and the pair of rollers 2 distributed up and down.

[0011] Furthermore, the multiple rotating shafts arranged on the left and right are connected by multiple sets of staggered transmission chains, the upper and lower rotating shafts located on the sides are connected by a pair of meshing gears, and a driving motor is fixedly installed on the outer end wall of the drying box to rotate one of the transmission shafts.

[0012] Furthermore, each group of rollers 2 is provided with multiple jet pipes, and the multiple jet pipes are evenly fixedly connected to the left and right end walls of the U-shaped air duct, and the end of the jet pipe away from one side of the U-shaped air duct extends to between the two rollers 2 and does not cross the inner end of the roller 2. Each group of rollers 2 is equipped with a U-shaped air duct with multiple jet pipes at both ends, replacing the traditional drying method of air intake from one end and air exhaust from the other end, and utilizing the air intake pipe, U-shaped air duct and jet pipe to evenly supply air to multiple points in the conveying space, so that the temperature at various locations in the drying box can be kept as consistent as possible.

[0013] Furthermore, the dust guide box is a hollow trapezoidal structure that is narrow inside and wide outside, and a dust suction port connected to the dust guide box is provided at the bottom end of the air guide cover.

[0014] Furthermore, the filter assembly includes a rotating sleeve rotatably mounted on the left and right ends of the air guide cover, and an outer filter layer and an inner filter layer are fixedly mounted between a pair of the rotating sleeves, which are sleeved from outside to inside and correspond to the position of the dust suction port.

[0015] Furthermore, a rotating drum is fixedly installed on the outer end of the rotating sleeve close to the manifold side, and a plurality of transmission shafts corresponding to the position of the rotating drum are rotatably installed on the outer end wall of the drying box. The rotating drum and the transmission shaft are connected by a conveyor belt transmission that passes through the air guide cover. The two adjacent transmission shafts on the left and right and the upper and lower transmission shafts on one side of the edge are also connected by a conveyor belt transmission. In addition, a motor 2 for rotationally driving one of the rollers is fixedly installed on the outer end wall of the drying box, so that multiple filter components can be rotated synchronously. While supplying air at multiple points, exhaust fans at multiple air guide covers are used for synchronous ventilation. The dust collecting areas are distributed at multiple points to expand the dust collecting surface, thereby effectively removing dust from multiple areas inside the drying box.

[0016] Furthermore, the end of the manifold close to one side of the preheating box is connected to the interior of the preheating box through a return pipe, and the interior of the preheating box close to one end of the conveyor belt is externally connected with a discharge pipe. After the hot air after dust removal is introduced into the manifold, the two return pipes distributed above and below introduce the hot air with residual heat after dust removal into the upper and lower interiors of the preheating box, so as to preheat the gypsum blocks conveyed inside the preheating box and recycle the residual heat.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] The present invention is to set multiple groups of rollers 2 distributed up and down inside the drying box, and each group of rollers 2 is equipped with a U-shaped air guide tube with multiple air jets, which replaces the traditional drying method of air intake from one end and air exhaust from the other end. During the slow transmission of the gypsum blocks in the drying box, the air intake tube, the U-shaped air guide tube and the air jet tube are used to uniformly supply air to the transmission space at multiple points, and the ejected hot air directly contacts the gypsum blocks in the transmission process, so that each gypsum block can be uniformly and efficiently contacted with the hot air, thereby improving the drying effect. A dust collection device is installed between each group of rollers 2. While supplying air at multiple points, exhaust fans at multiple air guide covers are used for synchronous ventilation. The dust inside the drying box is guided outward from the dust guide box along with the air flow, and filtered by the filter assembly, so that the dust collection area is distributed at multiple points and dust is removed independently, the dust collection surface is expanded, the dust removal effect is enhanced, and the drying effect is effectively avoided from being affected by the uneven removal of dust inside the drying box.

[0019] The present invention further adds a preheating box connected to the drying box at the front end thereof. After the hot air after dust removal is introduced into the confluence pipe, the hot air with residual heat after dust removal is introduced into the upper and lower interiors of the preheating box by two return pipes distributed up and down, so as to preheat the gypsum blocks transmitted inside the preheating box and recycle the residual heat. The air outlet ends of a pair of return pipes are distributed at the upper and lower ends of the relative connection between the preheating box and the drying box. After the hot air is introduced into the upper and lower ends of the preheating box, it moves toward the front end of the preheating box. The flow direction of the hot air is set in the opposite direction to the transmission direction of the gypsum blocks. The hot air effectively heats the roller, and the gypsum blocks are directly in contact with the hot air and the heated roller, thereby effectively improving the residual heat utilization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0022] Figure 3 It is an internal cross-sectional view of the junction of the preheating box and the drying box of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the end portion of the drying box of the present invention;

[0024] Figure 5 It is a structural schematic diagram of another viewing angle of the end of the drying box of the present invention;

[0025] Figure 6 It is a schematic diagram of the end structure of the junction of the drying box, the second roller and the return pipe of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the joint between the roller 2, the U-shaped air guide pipe and the air injection pipe of the present invention;

[0027] Figure 8 It is a partial cross-sectional view of the junction between the drying box and the plurality of roller groups of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the joint between the filter assembly and the guide cover of the present invention;

[0029] Fig.10 It is a schematic diagram of the separation of the filter assembly of the present invention;

[0030] Fig.11 A partial cross-sectional view of the dust collecting device of the present invention;

[0031] Fig.12 It is an internal cross-sectional view of the drying box of the present invention.

[0032] Description of the numbers in the figure:

[0033] Preheating box; 2. Drying box; 3. Gypsum blocks; 4. Roller 1; 5. Roller 2; 6. Guide ring sleeve; 7. U-shaped air guide pipe; 8. Jet pipe; 9. Inlet pipe; 10. Dust guide box; 11. Filter assembly; 111. Rotating sleeve; 112. Outer filter layer; 113. Inner filter layer; 114. Rotating drum; 12. Guide cover; 13. Converging pipe; 14. Exhaust fan; 15. Return pipe; 16. Drain pipe. DETAILED DESCRIPTION

[0034] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0035] Example 1: The present invention discloses a gypsum block drying device with independent dust removal function, see Figure 1-3 , comprising a preheating box 1 and a drying box 2 which are arranged in a horizontal connection, the outer ends of the preheating box 1 and the drying box 2 are provided with a conveyor belt for conveying the gypsum blocks 3, the preheating box 1 and the drying box 2 are respectively provided with a plurality of groups of rollers 1 4 and rollers 2 5 which are rotatably installed inside the preheating box 1 and the drying box 2, the plurality of rollers 1 4 are evenly distributed in the preheating box 1, the ends of the rollers 1 4 and rollers 2 5 are respectively rotatably connected with the inner walls of the preheating box 1 and the drying box 2 through a rotating shaft, and a conveying space which is consistent with the thickness of the gypsum blocks 3 is reserved between the pair of rollers 1 4 which are distributed up and down and the pair of rollers 2 5 which are distributed up and down;

[0036] The multiple rotating shafts arranged on the left and right are connected by multiple groups of staggered transmission chains, the upper and lower rotating shafts located on the sides are connected by a pair of meshing gears, and a driving motor 1 is fixedly installed on the outer end wall of the drying box 2 to rotate and drive one of the transmission shafts. This is an existing transmission technology and will not be explained in detail here. The transmission structure is used to achieve the synchronous rotation of the roller 1 4 and the roller 2 5 located at the top in one direction, and the synchronous rotation of the roller 1 4 and the roller 2 5 located at the bottom in the opposite direction, so as to facilitate the forward transmission of the gypsum blocks 3 at a certain speed. During the drying operation, the gypsum blocks 3 are conveyed by the conveyor belt to the preheating box 1, and then conveyed to the drying box 2 via the roller 1 4. After drying, they are led out of the drying box 2 and then conveyed out by another conveyor belt.

[0037] See also Figure 4-Figure 8 as well as Fig.12 , the outer end walls of each group of rollers 5 arranged up and down and away from each other are sleeved with a guide ring sleeve 6 whose end is fixedly installed on the inner wall of the drying box 2, and the upper and lower sides of the outer end of the drying box 2 are provided with an air intake pipe 9, and the air intake pipe 9 is fixedly connected with a plurality of U-shaped air guide pipes 7 corresponding to the positions of the plurality of groups of rollers 5, and the inner ends of the U-shaped air guide pipes 7 penetrate into the interior of the drying box 2 and are fixedly connected with a plurality of air injection pipes 8 that penetrate and extend to the inner side of the guide ring sleeve 6;

[0038] Each group of rollers 2 5 is provided with multiple, multiple jet pipes 8 are evenly and fixedly connected to the left and right end walls of the U-shaped air guide pipe 7, and the end of the jet pipe 8 away from one side of the U-shaped air guide pipe 7 extends to between the two rollers 2 5 and does not cross the inner end of the roller 2 5. Each group of rollers 2 5 is equipped with a U-shaped air guide pipe 7 with multiple jet pipes 8 at both ends, replacing the traditional drying method of air intake from one end and air outlet from the other end. During the slow transmission of the gypsum blocks 3 in the drying box 2, the air intake pipe 9, the U-shaped air guide pipe 7, and the jet pipe 8 are used to uniformly supply air to multiple points in the transmission space. The ejected hot air directly contacts the gypsum blocks 3 in the transmission process on the one hand, and heats the rollers 2 5 on the other hand, so that the multiple rollers 2 5 transfer heat to the gypsum blocks after being heated, which is conducive to keeping the temperature of each place in the drying box 2 as consistent as possible, and each gypsum block 3 can be in uniform and efficient contact with the hot air, thereby improving the drying effect of the gypsum blocks 3.

[0039] Embodiment 2: Based on Embodiment 1, this embodiment adds a dust collecting device and a conduit 13 and a return pipe 15 connected to the dust collecting device between two adjacent groups of rollers 5, so as to perform multi-point independent dust collection in the drying box 2, and recover the waste heat of the filtered hot air to act on the preheating box 1, as follows:

[0040] See also Figure 5-Figure 11 A dust suction space is reserved between two adjacent groups of rollers 5, and a dust suction device extending to the outside of the drying box 2 is installed in the dust suction space. The dust suction device includes a dust guide box 10 fixedly installed between the left and right guide ring sleeves 6. The top of the dust guide box 10 passes through the drying box 2 and is fixedly connected with a guide cover 12 embedded with the end wall of the drying box 2. A filter assembly 11 is installed between the dust guide box 10 and the guide cover 12. The upper and lower ends of the outer side of the drying box 2 are provided with a collection pipe 13 connected to the outer ends of multiple guide covers 12, and an exhaust fan 14 is installed at the end of the guide cover 12 close to the collection pipe 13.

[0041] In more detail, the dust guide box 10 is a hollow trapezoidal structure that is narrow inside and wide outside. A dust suction port connected to the dust guide box 10 is opened at the bottom end of the air guide cover 12. The filter assembly 11 includes a rotating sleeve 111 rotatably installed at the left and right ends of the air guide cover 12. An outer filter layer 112 and an inner filter layer 113 that are sleeved from outside to inside and corresponding to the position of the dust suction port are fixedly installed between a pair of rotating sleeves 111. The outer filter layer 112 and the inner filter layer 113 are both annular structures. The filter holes of the outer filter layer 112 are larger than the filter holes of the inner filter layer 113. An annular buffer space is reserved between the outer filter layer 112 and the inner filter layer 113. During the dust removal process, the exhaust fan 14 is started. The suction force generated by the exhaust fan 14 causes the dust inside the drying box 2 to be discharged from the dust guide box 10 along with the airflow, and is filtered layer by layer through the outer filter layer 112 and the inner filter layer 113. The filtered hot air is then introduced into the manifold 13 from the end of the air guide cover 12.

[0042] A rotating drum 114 is fixedly installed on the outer end of the rotating sleeve 111 near the side of the manifold 13, and a plurality of transmission shafts corresponding to the position of the rotating drum 114 are rotatably installed on the outer end wall of the drying box 2. The rotating drum 114 and the transmission shaft are connected by a conveyor belt transmission that penetrates the air guide cover 12. The two adjacent transmission shafts on the left and right and the upper and lower transmission shafts on one side of the edge are also connected by a conveyor belt transmission. A motor 2 for rotating and driving one of the rollers is fixedly installed on the outer end wall of the drying box 2. The transmission structure is used to realize the synchronous rotation of multiple filter components 11. This is also a prior art and will not be described in detail here.

[0043] See also Fig.12 While supplying air at multiple points, exhaust fans 14 at multiple air guide covers 12 are used for synchronous ventilation, so that the dust collection area is distributed at multiple points and dust is removed independently, the dust collection surface is expanded, and dust is effectively removed from multiple areas inside the drying box 2, thereby improving the dust removal effect.

[0044] The hot air sprayed onto the gypsum blocks 3 is heat exchanged by the exhaust fan 14 and then drawn out from the dust guide box 10 together with the dust. The filter assembly 11 is used to filter the drawn dusty air. During the filtering process, the same drive motor 2 cooperates with the transmission structure to realize the synchronous rotation of multiple filter assemblies 11, thereby effectively rotating the filter assembly 11, and continuously changing the filter surfaces of the outer filter layer 112 and the inner filter layer 113 facing the dust suction port, effectively ensuring that the dust can be filtered on the circumferential surfaces of the outer filter layer 112 and the inner filter layer 113, thereby improving the filtering effect.

[0045] See also Figure 3 , Figure 6 as well as Fig.12 The end of the manifold 13 near the preheating box 1 is connected to the inside of the preheating box 1 through a return pipe 15, and the inside of the preheating box 1 near the end of the conveyor belt is externally connected with a discharge pipe 16. After the hot air after dust removal is introduced into the manifold 13, the hot air with residual heat after dust removal is introduced into the upper and lower parts of the preheating box 1 by two return pipes 15 distributed above and below. In order to preheat the gypsum blocks 3 in the preheating box 1 and recycle the residual heat, the outlet ends of a pair of return pipes 15 are distributed between the preheating box 1 and the drying box. 2, the hot air is introduced into the upper and lower ends of the preheating box 1 and then moves toward the front end of the preheating box 1. The flow direction of the hot air is set in the opposite direction of the conveying direction of the gypsum block 3. The hot air effectively heats the roller 4. The gypsum block 3 is directly in contact with the hot air and the heated roller 4, so that the waste heat is utilized. After the hot air preheats the gypsum block 3, it is extracted and discharged outwardly through the discharge pipe 16. The discharge pipe 16 can be directly connected to the bag dust removal equipment, and the bag dust removal equipment is used to remove dust from the gas after heat exchange.

[0046] In summary, the present invention is to set multiple groups of rollers 5 distributed up and down inside the drying box 2, and each group of rollers 5 is equipped with a U-shaped air guide pipe 7 with multiple air injection pipes 8, replacing the traditional drying method of air intake at one end and air outlet at the other end. During the slow transmission of the gypsum blocks 3 in the drying box 2, the air intake pipe 9, the U-shaped air guide pipe 7, and the air injection pipe 8 are used to uniformly supply air to multiple points in the transmission space, and the ejected hot air directly contacts the gypsum blocks 3 in the transmission process, so that each gypsum block 3 can be uniformly and efficiently contacted with the hot air, thereby improving the drying effect of the gypsum blocks 3;

[0047] A dust collecting device is installed between each group of rollers 5. While supplying air at multiple points, exhaust fans 14 at multiple air guide covers 12 are used for synchronous ventilation. The dust inside the drying box 2 is discharged outward from the dust guide box 10 along with the air flow and filtered by the filter assembly 11. The dust collecting areas are independently distributed at multiple points to expand the dust collecting surface, and dust is removed from multiple areas inside the drying box 2, effectively avoiding that the dust inside the drying box 2 is not fully removed and affects the drying effect.

[0048] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A gypsum block drying device with an independent dust removal function, comprising a preheating box (1) and a drying box (2) which are arranged in a horizontal manner, and both outer ends of the preheating box and the drying box are provided with a conveyor belt for conveying gypsum blocks (3), characterized in that: The preheating box (1) and the drying box (2) are respectively rotatably mounted with a plurality of groups of rollers one (4) and rollers two (5) distributed vertically. The outer end walls of each group of rollers two (5) arranged vertically and away from each other are sleeved with a guide ring sleeve (6) whose end is fixedly mounted on the inner wall of the drying box (2). The upper and lower sides of the outer end of the drying box (2) are provided with an air intake pipe (9). The air intake pipe (9) is fixedly connected with a plurality of U-shaped air intake pipes (7) corresponding to the positions of the plurality of groups of rollers two (5). The inner end of the U-shaped air intake pipe (7) penetrates into the interior of the drying box (2) and is fixedly connected with a plurality of air injection pipes (8) extending through and extending to the inner side of the air injection ring sleeve (6). Each group of rollers two (5) is provided with a plurality of the plurality of air injection pipes (8), which are evenly and fixedly connected to the left and right end walls of the U-shaped air intake pipe (7), and the end of the air injection pipe (8) away from one side of the U-shaped air intake pipe (7) extends to between the two rollers two (5) and does not cross the inner end of the roller two (5); A dust suction space is reserved between two adjacent groups of rollers (5), and a dust suction device extending to the outside of the drying box (2) is installed in the dust suction space. The dust suction device comprises a dust guide box (10) fixedly installed between two left and right guide ring sleeves (6). The top of the dust guide box (10) passes through the drying box (2) and is fixedly connected to a guide cover (12) embedded in the end wall of the drying box (2). The dust guide box (10) is a hollow trapezoidal structure that is narrow inside and wide outside. A dust suction port connected to the dust guide box (10) is opened at the bottom end of the guide cover (12). A filter assembly (11) is installed between the dust guide box (10) and the guide cover (12). The upper and lower ends of the outer side of the drying box (2) are provided with a collection pipe (13) connected to the outer ends of the plurality of guide covers (12), and an exhaust fan (14) is installed at the end of the guide cover (12) close to the collection pipe (13).

2. The gypsum block drying device with independent dust removal function according to claim 1, characterized in that: The plurality of rollers one (4) are evenly distributed in the preheating box (1), and the ends of the roller one (4) and roller two (5) are rotatably connected to the inner wall of the preheating box (1) and the drying box (2) respectively through a rotating shaft.

3. The gypsum block drying device with independent dust removal function according to claim 2 is characterized in that: The plurality of rotating shafts arranged on the left and right are connected by a plurality of sets of staggered transmission chains, the upper and lower rotating shafts located on the sides are connected by a pair of meshing gears, and a driving motor 1 for rotating one of the transmission shafts is fixedly mounted on the outer end wall of the drying box (2).

4. The gypsum block drying device with independent dust removal function according to claim 1, characterized in that: The filter assembly (11) comprises a rotating sleeve (111) rotatably mounted on the left and right ends of the air guide cover (12), and an outer filter layer (112) and an inner filter layer (113) are fixedly mounted between a pair of the rotating sleeves (111) and are sleeved from outside to inside and correspond to the position of the dust suction port.

5. The gypsum block drying device with independent dust removal function according to claim 4, characterized in that: A rotating drum (114) is fixedly mounted on the outer end of the rotating sleeve (111) on the side close to the manifold (13); a plurality of transmission shafts corresponding to the positions of the rotating drum (114) are rotatably mounted on the outer end wall of the drying box (2); the rotating drum (114) and the transmission shaft are connected via a conveyor belt that passes through the air guide cover (12); two adjacent transmission shafts on the left and right and two upper and lower transmission shafts on one side of the edge are also connected via a conveyor belt; and a second motor for rotationally driving one of the rotating rollers is fixedly mounted on the outer end wall of the drying box (2).

6. The gypsum block drying device with independent dust removal function according to claim 1, characterized in that: The end of the manifold (13) close to the preheating box (1) is connected to the interior of the preheating box (1) through a return pipe (15), and the interior of the preheating box (1) close to the end of the conveyor belt is externally connected to a discharge pipe (16).

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