阅读说明：本技术 一种石膏板煅烧的收尘装置 (Dust collecting device for gypsum board calcination ) 是由 许江平 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种石膏板煅烧的收尘装置,属于石膏板煅烧技术领域,包括收尘箱、运输组件、煅烧组件、升降组件、吸尘组件和筛分组件,所述收尘箱竖直设置在水平面上,所述收尘箱的顶部设有下料槽,所述收尘箱的两个侧壁上均设有下料口,所述收尘箱上设有收料口,所述收尘箱内设有下料板且位于收料口的旁侧,所述运输组件倾斜设置在水平面上且运输组件的运输段延伸至下料槽的上方,所述煅烧组件设置在收尘箱内且位于下料槽的下方,所述升降组件设置在收尘箱的顶部且与收尘箱固定连接,所述吸尘组件设置在升降组件上,所述筛分组件设置在收尘箱的内底部且与两个下料口滑动配合。本发明通过升降组件和吸尘组件对煅烧石膏板产生的灰尘进行收尘作业。(The invention discloses a dust collecting device for gypsum board calcination, which belongs to the technical field of gypsum board calcination and comprises a dust collecting box, a transportation component, a calcination component, a lifting component, a dust collecting component and a screening component, the dust collection box is vertically arranged on a horizontal plane, the top of the dust collection box is provided with a feed chute, two side walls of the dust collection box are provided with feed openings, the dust collecting box is provided with a material receiving port, a blanking plate is arranged in the dust collecting box and is positioned at the side of the material receiving port, the transportation assembly is obliquely arranged on a horizontal plane, the transportation section of the transportation assembly extends to the upper part of the blanking groove, the calcining component is arranged in the dust collection box and is positioned below the feeding groove, the lifting component is arranged at the top of the dust collection box and is fixedly connected with the dust collection box, the dust collection assembly is arranged on the lifting assembly, and the screening assembly is arranged at the inner bottom of the dust collection box and is in sliding fit with the two feed openings. The dust collecting device carries out dust collecting operation on dust generated by calcining the gypsum board through the lifting assembly and the dust collecting assembly.)

1. The utility model provides a dust arrester installation that gypsum board was calcined which characterized in that: comprises a dust collection box (1), a transportation component (2), a calcination component (3), a lifting component (4), a dust collection component (5) and a screening component (6), wherein the dust collection box (1) is vertically arranged on a horizontal plane, a blanking slot (11) is arranged at the top of the dust collection box (1), blanking ports (12) are respectively arranged on two side walls of the dust collection box (1), a blanking port (13) is arranged on the dust collection box (1), a blanking plate (14) is arranged in the dust collection box (1) and is positioned at the side of the blanking port (13), the transportation component (2) is obliquely arranged on the horizontal plane, the transportation end of the transportation component (2) extends to the upper part of the blanking slot (11), the calcination component (3) is arranged in the dust collection box (1) and is positioned below the blanking slot (11), the lifting component (4) is arranged at the top of the dust collection box (1) and is fixedly connected with the dust collection box (1), dust absorption subassembly (5) set up on lifting unit (4), screening subassembly (6) set up in the interior bottom of dust collection box (1) and with two feed opening (12) sliding fit.

2. The dust collecting device for gypsum board calcination according to claim 1, wherein: transportation subassembly (2) are including transportation frame (21), transportation area (22), two transportation motors (23), two transportation axles (24) and two transportation rollers (25), transportation frame (21) is the slope and sets up on the horizontal plane, two transportation axle (24) symmetry sets up on transportation frame (21) and rotates with transportation frame (21) to be connected, two transportation motors (23) symmetry sets up on the lateral wall of transportation frame (21), every transportation axle (24) set up on the main shaft of transportation motor (23) and be connected with the spindle drive of transportation motor (23), every transportation roller (25) are fixed to be set up on transportation axle (24), transportation area (22) cover is established on two transportation rollers (25).

3. The dust collecting device for gypsum board calcination according to claim 1, wherein: calcining component (3) and calcining case (32) including burning part (31), the inside that the lateral wall that receives dirt case (1) was worn to the one end of burning part (31) extended to dirt case (1), the other end and the external gas of burning part (31) communicate with each other, calcining case (32) set up in the inside of dirt case (1) and be located the below of silo (11) down.

4. The dust collecting device for gypsum board calcination according to claim 3, wherein: the combustion part (31) comprises three calcining pipes (311), the three calcining pipes (311) penetrate through the dust collection box (1) and extend to the interior of the calcining box (32), and the three calcining pipes (311) are communicated with external fuel gas.

5. The dust collecting device for gypsum board calcination according to claim 3, wherein: calcining case (32) includes box (321), fixed plate (322), fixed block (323), electric jar (324), axis of rotation (325) and revolving door (326), box (321) level sets up in dust collection case (1) and is located the below of lower silo (11), fixed plate (322) fixed connection is on the inside wall of dust collection case (1), fixed block (323) fixed connection is on fixed plate (322), the one end rotation of electric jar (324) is connected on fixed block (323), the both ends rotation of axis of rotation (325) is connected on box (321), revolving door (326) fixed connection is on axis of rotation (325), the flexible end rotation of electric jar (324) is connected on revolving door (326).

6. The dust collecting device for gypsum board calcination according to claim 1, wherein: lifting unit (4) include crane (41), elevator motor (42), threaded rod (43), lift lid (44) and dead lever (45), crane (41) are fixed to be set up at the top of box (321), elevator motor (42) are fixed to be set up at the top of crane (41), threaded rod (43) rotate to be connected in crane (41) and the one end of threaded rod (43) is connected with the spindle drive of elevator motor (42), two dead lever (45) fixed connection is on crane (41), lift lid (44) set up on dead lever (45) and threaded rod (43), lifter and threaded rod (43) threaded connection.

7. The dust collecting device for gypsum board calcination according to claim 6, wherein: dust absorption subassembly (5) are including dust absorption pump (51), dust absorption groove (52), dust absorption pipe (53), play dirt hose (54) and put dirt case (55), dust absorption pump (51) fixed connection is at the top of lift lid (44), dust absorption groove (52) cross-under is at the top of lift lid (44), the one end setting of dust absorption pipe (53) is on dust absorption groove (52), the other end setting of dust absorption pipe (53) is on dust absorption pump (51), it sets up the top at dust collection case (1) to put dirt case (55) level, the one end setting of going out dirt hose (54) is on dust absorption pump (51), the other end setting of going out dirt hose (54) is on putting dirt case (55).

8. The dust collecting device for gypsum board calcination according to claim 1, wherein: the screening assembly (6) comprises a chassis (61), a fixing frame (62), a suspension device (63), a damping spring device (64), a screen mesh (65), a screening box (66), a double-shaft vibration motor (67), a vibration rod (671), two falling plates (68), two fixing seats (69) and two semicircular plates (691), wherein the chassis (61) is arranged in the dust collection box (1) and is fixedly connected with the dust collection box (1), the two fixing seats (69) are symmetrically arranged at the top of the chassis (61), the suspension device (63) penetrates through the two fixing seats (69) and is in sliding fit with the two fixing seats (69), the fixing frame (62) is arranged at the top of the chassis (61) and is connected with the two fixing seats (69) through the suspension device (63), the screening box (66) is connected in the fixing frame (62) through the damping spring device (64), the double-shaft vibration motor (67) is arranged in the screening box (66) and is fixedly connected with the screening box (66), two semicircle board (691) sets up respectively in the both sides of sieve case (66) and all is connected, two with two spindle drive of biax vibrating motor (67) semicircle board (691) and chassis (61) sliding fit, the vertical top that sets up at biax vibrating motor (67) of vibrations pole (671), screen cloth (65) level sets up the top at vibrations pole (671), two feed opening (12) sliding fit on screen cloth (65) and dust collection case (1) lateral wall, the one end and the sieve case (66) fixed connection of damping spring device (64), the other end and mount (62) fixed connection of damping spring device (64), every equal fixed connection of lower plate (68) just is located the below of feed opening (12) on the lateral wall of dust collection case (1).

Technical Field

The invention relates to the technical field of gypsum board calcination, in particular to a dust collecting device for gypsum board calcination.

Background

At present, a vertical fluidized bed furnace calcining system is mostly adopted for calcining gypsum boards in China, and the vertical fluidized bed furnace calcining system comprises a two-chamber calcining furnace, a Roots blower for blowing materials to form a fluidized state in a furnace body, a heat exchange tube for calcining and dehydrating gypsum powder, a high-voltage electrostatic dust collector device for capturing dust in steam discharged in the gypsum powder dehydrating process, a heat conduction oil component for exchanging heat of heat conduction oil and a hot blast furnace and circulating heat conduction oil fluid of the system, the hot blast furnace for indirectly heating the heat conduction oil and the like. The system adopts a hot blast stove to heat conduction oil, the heat conduction oil heats gypsum powder through a heat exchange pipe, and the heat efficiency of secondary heat exchange is low; the system adopts a two-chamber calcining furnace, the bottoms of the two chambers are communicated and are relatively independent, and the gypsum powder is fed in and discharged out, so that the gypsum powder is heated unevenly and is in a multiphase mixing state, and the product quality is unstable; the high-voltage electrostatic dust collector has low efficiency, high investment and difficult replacement of dust removing accessories; the heat conducting oil is used as a heat exchange medium, so that the heat exchange pipeline is difficult to clean; the system has no slag cleaning port, the production needs to be stopped when sundries such as brick cleaning, iron slag maintenance and the like are cleaned, the operating environment of workers is poor, and the labor intensity is high.

The fluidized bed type gypsum calcining device provided by the publication number CN102491659A comprises a calcining furnace, a coal hot-blast stove, a Roots blower, a bag dust collector and a raw material preheater, wherein the calcining furnace consists of a vaporization chamber and a main calcining body, the main calcining body is provided with three relatively independent calcining chambers, and the lower parts of the calcining chambers are connected with an isobaric air box and connected with the Roots blower; the main forging body is internally provided with a heat exchange tube which is respectively communicated with a coal-fired hot-blast stove and a raw material preheater; the vaporizing chamber is positioned above the main forging body, the top of the vaporizing chamber is provided with a cyclone dust collector, the upper part of the cyclone dust collector is provided with a moisture-proof port, and the cloth bag dust collector is arranged above the cyclone dust collector. The gypsum calcining device improves the heat efficiency and the dust removal efficiency, solves the problem of mixing of high-temperature and low-temperature gypsum materials, and ensures the product quality.

However, the above-mentioned devices also have the following problems in use: firstly, the automatic transportation operation cannot be carried out on the gypsum board, secondly, the blanking operation cannot be carried out on the gypsum board after calcination, and thirdly, the screening operation cannot be carried out on the gypsum board which is not completely calcined.

Disclosure of Invention

The embodiment of the invention provides a dust collecting device for gypsum board calcination, and aims to solve the technical problems that automatic transportation operation cannot be performed on gypsum boards, blanking operation cannot be performed on the gypsum boards after calcination, and screening operation cannot be performed on incompletely calcined gypsum boards.

The embodiment of the invention adopts the following technical scheme: including dust collection box, transportation subassembly, calcination subassembly, lifting unit, dust absorption subassembly and screening subassembly, the vertical setting of dust collection box is on the horizontal plane, the top of dust collection box is equipped with down the silo, all be equipped with the feed opening on two lateral walls of dust collection box, be equipped with the feed opening on the dust collection box, be equipped with down the flitch in the dust collection box and be located the side of feed opening, the transportation subassembly slope sets up on the horizontal plane and the transportation section of transportation subassembly extends to the top of feed opening down, calcine the subassembly setting in dust collection box and be located the below of feed opening down, lifting unit set up at the top of dust collection box and with dust collection box fixed connection, the dust absorption subassembly sets up on lifting unit, the screening subassembly setting is in the interior bottom of dust collection box and with two feed openings sliding fit.

Further, the transportation subassembly is including transportation frame, transportation area, two transportation motors, two transportation axles and two transportation rollers, the transportation frame is the slope setting on the horizontal plane, two transportation axisymmetric sets up on the transportation frame and rotates with the transportation frame to be connected, two transportation motor symmetry sets up on the lateral wall of transportation frame, every the transportation axle sets up on the main shaft of transportation motor and is connected with the spindle drive of transportation motor, every the transportation roller is fixed to be set up on the transportation axle, the transportation area cover is established on two transportation rollers.

Further, it includes combustion part and calcination case to calcine the subassembly, the lateral wall that the one end cross-under of combustion part falls the dirt case extends to the inside that falls the dirt case, combustion part's the other end communicates with each other with external gas, it sets up in the inside that falls the dirt case and is located the below of silo down to calcine the case.

Furthermore, the burning part includes three calcination pipes, and is three it runs through the inside that the dust collection box extended to the case of calcining to calcine the pipe, and is three it communicates with each other with external gas to calcine the pipe.

Further, the calcining box includes box, fixed plate, fixed block, electric jar, axis of rotation and revolving door, the box level sets up in the collection dirt incasement and is located the below of silo down, fixed plate fixed connection is on the inside wall of collection dirt case, fixed block fixed connection is on the fixed plate, the one end of electric jar is rotated and is connected on the fixed block, the both ends of axis of rotation are rotated and are connected on the box, revolving door fixed connection is in the axis of rotation, the flexible end of electric jar is rotated and is connected on the revolving door.

Further, the lifting component comprises a lifting frame, a lifting motor, a threaded rod, a lifting cover and a fixed rod, wherein the lifting frame is fixedly arranged at the top of the box body, the lifting motor is fixedly arranged at the top of the lifting frame, the threaded rod is rotatably connected into the lifting frame, one end of the threaded rod is connected with the main shaft of the lifting motor, the fixed rod is fixedly connected onto the lifting frame, the lifting cover is arranged on the fixed rod and the threaded rod, and the lifting rod is in threaded connection with the threaded rod.

Further, the dust absorption subassembly includes dust absorption pump, dust absorption groove, dust absorption pipe, goes out the dirt hose and puts the dirt case, dust absorption pump fixed connection is at the top of lift lid, the top at the lift lid is worn to connect in the dust absorption groove, the one end setting of dust absorption pipe is on the dust absorption groove, the other end setting of dust absorption pipe is on the dust absorption pump, it sets up the top at the dust collection case to put the dirt case level, the one end setting that goes out the dirt hose is on the dust absorption pump, the other end setting that goes out the dirt hose is on putting the dirt case.

Further, the screening component comprises a bottom frame, a fixing frame, a hanging device, a damping spring device, a screen mesh, a screen box, a double-shaft vibration motor, a vibration rod, two falling plates, two fixing seats and two semicircular plates, wherein the bottom frame is arranged in the dust collection box and fixedly connected with the dust collection box, the two fixing seats are symmetrically arranged at the top of the bottom frame, the hanging device penetrates through the two fixing seats and is in sliding fit with the two fixing seats, the fixing frame is arranged at the top of the bottom frame and is connected with the two fixing seats through the hanging device, the screen box is connected in the fixing frame through the damping spring device, the double-shaft vibration motor is arranged in the screen box and is fixedly connected with the screen box, the two semicircular plates are respectively arranged at two sides of the screen box and are in transmission connection with two main shafts of the double-shaft vibration motor, the two semicircular plates are in sliding fit with the bottom frame, the vibration rod is vertically, the screen cloth level sets up at the top of vibrations pole, two feed opening sliding fit on screen cloth and the case lateral wall that gathers dust, damping spring device's one end and sieve case fixed connection, damping spring device's the other end and mount fixed connection, every the equal fixed connection of lower dropping plate just is located the below of feed opening on the lateral wall of dust collection case.

The embodiment of the invention adopts at least one technical scheme which can achieve the following beneficial effects:

one of them, when needs calcine the operation to the gypsum board, place the gypsum board on the conveyer belt, two transportation motor work drive two transport axles rotate on the transportation frame, two transport axles rotate and drive two transport rollers and rotate, two transport rollers rotate and drive the belt and rotate and carry out the transportation operation to the gypsum board, drop when the gypsum board is transported the front end of transportation frame and calcine the operation in calcining the subassembly.

And secondly, after the three calcining pipes calcine the gypsum board, the telescopic end of the electric cylinder stretches backwards to drive the rotating door to rotate on the box body through the rotating shaft, and the calcined gypsum board is transferred to the screening assembly to finish calcining operation.

Thirdly, when the calcined gypsum board is placed on the screen by the rotating door, gypsum blocks which are not completely calcined exist in the gypsum board, at the moment, gypsum powder and the gypsum blocks need to be screened, a double-shaft vibrating motor fixedly connected in the screen box starts to rotate, the double-shaft vibrating motor works to drive two semi-circular plates to rotate on the underframe, so that the screen box is driven to vibrate up and down through a suspension device and a damping spring device, the screen box generates vibration to drive a fixed rod fixedly connected to the double-shaft vibrating motor to vibrate so as to drive the screen to vibrate on a dust collection box, the screen generates vibration to screen the falling gypsum blocks and gypsum powder, the gypsum blocks in the gypsum powder are screened and filtered, the gypsum blocks are left on the screen, because the vibration exists, the gypsum blocks can be discharged outwards through the feed opening and the lower falling plate to realize screening operation, and the gypsum powder falls downwards onto the lower material plate through the screen, the receiving operation of the gypsum powder is finished by the receiving port.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the transport assembly of the present invention;

FIG. 4 is a first schematic view of a calcination assembly according to the present invention;

FIG. 5 is a second schematic structural view of a calcination assembly of the present invention;

FIG. 6 is a schematic view of the lifting assembly of the present invention;

FIG. 7 is a schematic view of the dust collection assembly of the present invention;

FIG. 8 is a schematic illustration of a screen assembly according to the present invention;

reference numerals

The device comprises a dust collection box 1, a blanking groove 11, a blanking opening 12, a material receiving opening 13, a blanking plate 14, a transportation assembly 2, a transportation frame 21, a transportation belt 22, a transportation motor 23, a transportation shaft 24, a transportation roller 25, a calcining assembly 3, a combustion part 31, a calcining pipe 311, a calcining box 32, a box body 321, a fixing plate 322, a fixing block 323, an electric cylinder 324, a rotating shaft 325, a rotating door 326, a lifting assembly 4, a lifting frame 41, a lifting motor 42, a threaded rod 43, a lifting cover 44, a fixing rod 45, a dust collection assembly 5, a dust collection pump 51, a dust collection groove 52, a dust collection pipe 53, a dust outlet hose 54, a dust collection box 55, a screening assembly 6, a bottom frame 61, a fixing frame 62, a suspension device 63, a damping spring device 64, a screen 65, a screen box 66, a double-shaft vibration motor 67, a vibration rod 671, a blanking plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 8, an embodiment of the present invention provides a dust collecting device for gypsum board calcination, including a dust collecting box 1, a transporting component 2, a calcining component 3, a lifting component 4, a dust collecting component 5 and a sieving component 6, where the dust collecting box 1 is vertically arranged on a horizontal plane, a blanking slot 11 is arranged at the top of the dust collecting box 1, blanking slots 12 are arranged on both side walls of the dust collecting box 1, a blanking slot 13 is arranged on the dust collecting box 1, a blanking plate 14 is arranged in the dust collecting box 1 and located beside the blanking slot 13, the transporting component 2 is obliquely arranged on the horizontal plane, a transporting end of the transporting component 2 extends to the upper side of the blanking slot 11, the calcining component 3 is arranged in the dust collecting box 1 and located below the blanking slot 11, the lifting component 4 is arranged at the top of the dust collecting box 1 and fixedly connected with the dust collecting box 1, the dust collecting component 5 is arranged on the lifting component 4, the screening assembly 6 is arranged at the inner bottom of the dust collection box 1 and is in sliding fit with the two feed openings 12.

Preferably, referring to fig. 3, the transportation assembly 2 includes a transportation frame 21, a transportation belt 22, two transportation motors 23, two transportation shafts 24 and two transportation rollers 25, the transportation frame 21 is obliquely arranged on a horizontal plane, the two transportation shafts 24 are symmetrically arranged on the transportation frame 21 and are rotatably connected with the transportation frame 21, the two transportation motors 23 are symmetrically arranged on the side walls of the transportation frame 21, each transportation shaft 24 is arranged on a main shaft of the transportation motor 23 and is in transmission connection with the main shaft of the transportation motor 23, each transportation roller 25 is fixedly arranged on the transportation shaft 24, and the transportation belt 22 is sleeved on the two transportation rollers 25; when needs calcine the operation to the gypsum board, place the gypsum board on conveyer belt 22, two transportation motors 23 work and drive two transportation axles 24 and rotate on transportation frame 21, two transportation axles 24 rotate and drive two transportation rollers 25 and rotate, and two transportation rollers 25 rotate and drive the belt and rotate and carry out the transportation operation to the gypsum board, drop to calcining in the subassembly 3 when the gypsum board is transported the front end of transportation frame 21 and calcine the operation.

Preferably, as shown in fig. 4 to 5, the calcining assembly 3 includes a combustion part 31 and a calcining box 32, one end of the combustion part 31 penetrates through the side wall of the dust receiving box 1 and extends to the inside of the dust receiving box 1, the other end of the combustion part 31 is communicated with external gas, and the calcining box 32 is arranged inside the dust receiving box 1 and below the blanking slot 11; when the gypsum board is transported by the transport assembly 2 into the calcining box 32, the combustion part 31 operates to calcine the gypsum board in the calcining box 32, and after the calcination is completed, the calcining box 32 moves the calcined gypsum board onto the screen assembly 6.

Preferably, referring to fig. 4, the combustion part 31 includes three calcining pipes 311, the three calcining pipes 311 extend through the dust collecting box 1 to the inside of the calcining box 32, and the three calcining pipes 311 are communicated with external gas; three calcining pipes 311 are operated to perform the calcining operation on the gypsum board while the gypsum board is transported by the conveyor belt 22 into the calcining box 32.

Preferably, referring to fig. 5, the calcining box 32 includes a box body 321, a fixing plate 322, a fixing block 323, an electric cylinder 324, a rotating shaft 325 and a rotating door 326, the box body 321 is horizontally disposed in the dust collecting box 1 and located below the discharging chute 11, the fixing plate 322 is fixedly connected to the inner side wall of the dust collecting box 1, the fixing block 323 is fixedly connected to the fixing plate 322, one end of the electric cylinder 324 is rotatably connected to the fixing block 323, two ends of the rotating shaft 325 are rotatably connected to the box body 321, the rotating door 326 is fixedly connected to the rotating shaft 325, and the telescopic end of the electric cylinder 324 is rotatably connected to the rotating door 326; after the three calcining pipes 311 calcine the gypsum board, the telescopic end of the electric cylinder 324 extends backwards to drive the rotating door 326 to rotate on the box 321 through the rotating shaft 325, and the calcined gypsum board is lowered to the screening assembly 6 to complete the calcining operation.

Preferably, referring to fig. 6, the lifting assembly 4 includes a lifting frame 41, a lifting motor 42, a threaded rod 43, a lifting cover 44 and two fixing rods 45, the lifting frame 41 is fixedly arranged at the top of the box 321, the lifting motor 42 is fixedly arranged at the top of the lifting frame 41, the threaded rod 43 is rotatably connected in the lifting frame 41, one end of the threaded rod 43 is in transmission connection with a main shaft of the lifting motor 42, the two fixing rods 45 are fixedly connected to the lifting frame 41, the lifting cover 44 is arranged on the two fixing rods 45 and the threaded rod 43, and the lifting rod is in threaded connection with the threaded rod 43; when the lifting operation is required, the lifting motor 42 works to drive the threaded rod 43 to rotate on the lifting frame 41, the threaded rod 43 rotates to drive the lifting cover 44 to slide on the two fixing rods 45, so that the dust collection assembly 5 is driven to perform the lifting operation, and the two fixing rods 45 perform the fixing operation on the lifting cover 44 in the lifting process of the lifting cover 44 to prevent the lifting cover 44 from shaking.

Preferably, as shown in fig. 7, the dust collection assembly 5 includes a dust collection pump 51, a dust collection groove 52, a dust collection pipe 53, a dust outlet hose 54 and a dust storage box 55, the dust collection pump 51 is fixedly connected to the top of the lifting cover 44, the dust collection groove 52 is connected to the top of the lifting cover 44 in a penetrating manner, one end of the dust collection pipe 53 is disposed on the dust collection groove 52, the other end of the dust collection pipe 53 is disposed on the dust collection pump 51, the dust storage box 55 is horizontally disposed on the top of the dust storage box 1, one end of the dust outlet hose 54 is disposed on the dust collection pump 51, and the other end of the dust outlet hose 54 is disposed on the dust storage box 55; when the calcination operation is performed, the lifting motor 42 works to drive the threaded rod 43 to rotate, the threaded rod 43 rotates to lower the lifting cover 44 to the top of the dust collection box 1 and cover the blanking groove 11, at the moment, the dust collection pump 51 works to collect dust and smoke generated in the calcination operation through the dust collection pipe 53, and the dust and smoke collected by the dust collection hose 54 are stored in the dust storage box 55 to achieve the dust collection operation.

Preferably, referring to fig. 8, the sieving assembly 6 includes a chassis 61, a fixing frame 62, a suspension device 63, a damping spring device 64, a screen 65, a sieve box 66, a biaxial vibration motor 67, a vibration rod 671, two falling plates 68, two fixing seats 69 and two semicircular plates 691, the chassis 61 is disposed in the dust collecting box 1 and fixedly connected with the dust collecting box 1, the two fixing plates 322 are symmetrically disposed on the top of the chassis 61, the suspension device 63 penetrates through the two fixing seats 69 and is slidably fitted with the two fixing seats 69, the fixing frame 62 is disposed on the top of the chassis 61 and is connected with the two fixing seats 69 through the suspension device 63, the sieve box 66 is connected in the fixing frame 62 through the damping spring device 64, the biaxial vibration motor 67 is disposed in the sieve box 66 and is fixedly connected with the sieve box 66, the two semicircular plates 691 are disposed on two sides of the sieve box 66 respectively and are both in transmission connection with two main shafts of the biaxial vibration motor 67, the two semicircular plates 691 are in sliding fit with the chassis 61, the vibration rod 671 is vertically arranged at the top of the biaxial vibration motor 67, the screen 65 is horizontally arranged at the top of the vibration rod 671, the screen 65 is in sliding fit with the two feed openings 12 on the side wall of the dust collection box 1, one end of the damping spring device 64 is fixedly connected with the screen box 66, the other end of the damping spring device 64 is fixedly connected with the fixing frame 62, and each of the falling plates 68 is fixedly connected on the outer side wall of the dust collection box 1 and is located below the feed opening 12; when the calcined gypsum board is put on the screen 65 through the rotary door, gypsum blocks which are not completely calcined exist in the gypsum board, at the moment, gypsum powder and the gypsum blocks need to be screened, the double-shaft vibrating motor 67 fixedly connected in the screen box 66 starts to rotate, the double-shaft vibrating motor 67 works to drive the two half-round plates 691 to rotate on the bottom frame 61, so as to drive the screen box 66 to vibrate up and down through the hanging device 63 and the damping spring device 64, the screen box 66 generates vibration to drive the vibrating rod 671 fixedly connected on the double-shaft vibrating motor 67 to vibrate so as to drive the screen 65 to vibrate on the dust collection box 1, the screen 65 generates vibration to screen the falling gypsum blocks and the gypsum powder, the gypsum blocks in the gypsum powder are screened and filtered, the gypsum blocks are left on the screen 65, and can be discharged outwards through the discharge port 12 and the falling plate 68 due to the existence of vibration, so as to realize screening operation, the gypsum powder falls downwards onto the blanking plate 14 through the screen 65, and the material receiving operation of the gypsum powder is completed through the material receiving port 13.

The working principle is as follows: when the gypsum board is required to be calcined, the gypsum board is placed on the conveyer belt 22, two conveyer motors 23 work to drive two conveyer shafts 24 to rotate on the conveyer frame 21, two conveyer shafts 24 rotate to drive two conveyer rollers 25 to rotate, two conveyer rollers 25 rotate to drive a belt to rotate to carry out the operation of conveying the gypsum board, when the gypsum board is conveyed to the front end of the conveyer frame 21, the gypsum board drops into the calcining component 3 to carry out the operation of calcining, when the gypsum board is conveyed into the calcining box 32 by the conveyer assembly 2, the combustion component 31 works to calcine the gypsum board in the calcining box 32, the calcining box 32 moves the calcined gypsum board to the screening component 6 after the calcining is finished, when the gypsum board is conveyed into the calcining box 32 by the conveyer belt 22, the three calcining pipes 311 work to calcine the gypsum board, after the three calcining pipes 311 carry out the operation of calcining the gypsum board, the telescopic ends of the electric cylinders 324 stretch backwards to drive the rotating doors 326 to rotate on the box body 321 through the rotating shafts 325, the calcined gypsum board is put on the screening component 6 to finish the calcining operation, when the lifting operation is needed, the lifting motor 42 works to drive the threaded rod 43 to rotate on the lifting frame 41, the threaded rod 43 rotates to drive the lifting cover 44 to slide on the fixed rod 45, thereby driving the dust collection component 5 to carry out the lifting operation, the fixed rod 45 carries out the fixing operation on the lifting cover 44 to prevent the lifting cover 44 from shaking in the lifting process of the lifting cover 44, when the calcining operation is carried out, the lifting motor 42 works to drive the threaded rod 43 to rotate, the threaded rod 43 rotates to lower the lifting cover 44 to the top of the dust collection box 1 and cover the blanking slot 11, at the moment, the dust collection pump 51 works to absorb the dust and smoke generated by the calcining operation through the dust collection pipe 53, then the dust and smoke absorbed by the dust outlet hose 54 are stored in the dust collection box 55 to realize the dust collection operation, when the calcined gypsum board is put on the screen 65 through the rotating, the gypsum powder and the gypsum block are required to be screened at this time, a double-shaft vibrating motor 67 fixedly connected in a screen box 66 starts to rotate, the double-shaft vibrating motor 67 works to drive two semicircular plates 691 to rotate on an underframe 61, so that the screen box 66 is driven to vibrate up and down through a suspension device 63 and a damping spring device 64, the screen box 66 generates vibration to drive a vibrating rod 671 fixedly connected on the double-shaft vibrating motor 67 to vibrate so as to drive a screen 65 to vibrate on a dust collecting box 1, the screen 65 generates vibration to screen the falling gypsum block and the gypsum powder, the gypsum block in the gypsum powder is screened and filtered, the gypsum block is left on the screen 65, and can be discharged outwards through a discharging port 12 in cooperation with a falling plate 68 to realize screening operation due to the vibration, the gypsum powder falls downwards onto a falling plate 14 through the screen 65, the receiving operation of the gypsum powder is finished by the receiving port 13.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.