A dual-carrier denitration catalyst, a preparation method thereof, and a carrier drying device

Abstract

The present invention discloses a dual-carrier denitration catalyst, wherein the catalyst is composed of Al2O3, SiO2, V2O5, and WO3. A preparation method of the dual-carrier denitration catalyst is also disclosed, wherein the catalyst can be obtained by mixing, drying, and calcining a plurality of raw materials. A carrier drying device is also disclosed, comprising a conveyor belt device, wherein the conveyor belt device comprises a fixed table and a transmission belt, support tables are installed on both sides of the fixed table, a material spreading mechanism is installed on the conveyor belt device, and a drying mechanism is installed on the conveyor belt device. The beneficial effects of the present invention are that the ratio of active material to catalyst and the processing method are adjusted by improving the compounding of additives and the processing technology, thereby improving the overall high-temperature resistance of the catalyst; when drying the carrier, the carrier can be first spread out to reduce its thickness, and then moved to the bottom of a heating box for drying. The carrier can be shaken during drying, thereby improving the drying efficiency of the carrier.

Description

Technical Field

[0001] The present invention relates to the technical field of denitration catalysts, and more particularly to a dual-carrier denitration catalyst, a preparation method thereof, and a carrier drying device. Background Art

[0002] Since the beginning of the 21st century, the country has continuously encouraged and developed a green circular economy, advocated the construction of a resource-saving and environmentally friendly society, and further deepened the understanding of energy utilization and ecological environment protection.

[0003] Nitrogen oxides are one of the main pollutants in the atmosphere, mainly including NO, NO2 and N2O. my country defines nitrogen oxides as a pollutant subject to total amount control after sulfur dioxide.

[0004] Ammonia-based selective catalytic reduction (SCR) denitrification technology is currently the most widely used flue gas denitrification method. Its core lies in the SCR denitrification catalyst. Commercial denitrification catalysts are mostly V2O5-WO3 / TiO2 systems and have been widely used in coal-fired power plants, glass furnaces, cement plants and other industries. However, the application temperature window of this type of catalyst is relatively narrow, with the applicable temperature mostly being 320-400°C. It is not suitable for high-temperature flue gases (above 500°C) emitted by incinerators, boilers, gas turbines, etc. Conventional commercial vanadium-titanium-based catalysts are difficult to meet their denitrification needs. In high-temperature denitrification systems above 450°C, NH3 oxidation, sintering and lattice changes will occur, resulting in catalyst deactivation and reduced denitrification performance. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a dual-carrier denitration catalyst, a preparation method thereof, and a carrier drying device, so that the catalyst can be used normally even under high temperature conditions.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A dual-carrier denitration catalyst consists of Al2O3, SiO2, V2O5 and WO3.

[0008] Furthermore, the mass ratio of Al2O3 and SiO2 used as catalyst carriers is 1:4, the mass ratio of V2O5 and WO3 is 1:1, and the mass of V2O5 and WO3 in the catalyst is 0.5%-1.05%.

[0009] A method for preparing a dual-support denitration catalyst comprises the following steps:

[0010] Step 1: Aluminum hydroxide powder and silica sol are mixed, added to deionized water of the same mass, heated and stirred, and then the solution is filtered to obtain a filter cake, the filter cake is dried, and then the filter cake is placed in a muffle furnace for calcination to obtain a powdered carrier;

[0011] Step 2: Mix ammonium metavanadate, ammonium metatungstate and the aforementioned carrier, add deionized water of the same mass, place in an ultrasonic device for ultrasonic immersion, filter the solution to obtain a block filter cake;

[0012] Step 3: Dry the filter cake in a drying oven, and then calcine it in a muffle furnace to obtain a dual-carrier ultra-high temperature denitrification catalyst.

[0013] Furthermore, the water bath heating temperature in step 1 is 80-85°C, the stirring time is 45-50 minutes, the filter cake is placed at 105°C and dried for 6 hours, and the dried filter cake is placed in a muffle furnace and calcined for 5 hours at a calcination temperature of 550-650°C.

[0014] Furthermore, the ultrasonic immersion time in step 2 is 30 minutes.

[0015] Furthermore, the block filter cake in step three is dried in a drying oven for 6 hours at a drying temperature of 105°C, and the dried block filter cake is placed in a muffle furnace and calcined for 5 hours at a calcination temperature of 500°C. The mass ratio of V2O5 and WO3 loaded in the dual-carrier ultra-high temperature denitration catalyst is 1:1, and the mass percentage of V2O5 and WO3 in the catalyst is 0.5%-1.05%.

[0016] A carrier drying device includes a conveyor belt device, the conveyor belt device includes a fixed platform and a transmission belt, support platforms are installed on both sides of the fixed platform, and the four corners of the lower surface of the support platform are installed on the ground through support legs. A collection box is placed on the ground on one side of the conveyor belt device, a material spreading mechanism is installed on the conveyor belt device, and a drying mechanism is installed on the conveyor belt device;

[0017] The material spreading mechanism includes a material box installed above the support platform, a tapered discharge pipe is installed at the lower end of the material box, a servo motor is installed on one side of the upper end of the support platform, the rotating end of the servo motor is connected to the feed screw through a coupling, a square box is provided above the feed screw, the square box is installed on the support platform through an L-shaped fixing plate, first rolling bearings are installed at both ends of the square box, the feed screw passes through the first rolling bearing, a feed port is opened at the upper end of the square box, the lower end of the tapered discharge pipe is connected to the feed port, a protective door is installed at the lower end of the tapered discharge pipe, a plurality of connecting rods are installed on the transmission belt, and the connecting rods are provided with a plurality of connecting rods. A placing table is installed at the end, an annular protective table is installed on the outside of the fixed table, an annular groove is opened on the inside of the annular protective table, guide wheels are installed on the surfaces of both sides of the placing table, one end of the guide wheel extends into the annular groove, a drying box body that can move up and down is provided above the placing table, a square connecting block is installed on the upper end of the drying box body, a square connecting groove is opened at the lower end of the square box body, the square connecting block can be moved into the square connecting groove, a plurality of guide holes are opened on the upper end of the placing table, a plurality of guide rods are installed at the lower end of the drying box body, the lower ends of the guide rods extend into the guide holes, a driving frame is installed on the support platform, and the driving frame can drive the drying box body to move up and down;

[0018] The drying mechanism includes a heating box located above the conveyor belt device, which is installed on a support platform through a fixing rod. The drying box body can be moved to the bottom of the heating box. A shaking rack is installed in the drying box body, which can make the material in the drying box body shake.

[0019] Furthermore, the driving frame includes a self-locking reducer installed on the upper end of the support platform, a first bevel gear is installed at the power input end of the self-locking reducer, a one-way bearing is installed at one end of the feed screw, a second bevel gear is installed on the outside of the one-way bearing, the first bevel gear and the second bevel gear are meshed, and the power output end of the self-locking reducer is connected to a rotating shaft, a circular through hole is opened on the fixed platform, the rotating shaft passes through the circular through hole, second rolling bearings are installed on both sides of the circular through hole, the outer side of the rotating shaft is fixedly connected to the inner ring of the second rolling bearing, cams are installed at both ends of the rotating shaft, and L-shaped lifting plates are installed on the surfaces of both sides of the drying box, and the L-shaped lifting plates are located above the cams.

[0020] Furthermore, the protective door includes a third bevel gear installed at one end of the rotating shaft, the third bevel gear is meshed with a fourth bevel gear, a transmission shaft is installed on the fourth bevel gear, a third rolling bearing is installed on the upper end of the transmission shaft, one end of the third rolling bearing is installed on the self-locking reducer, a transmission rod is provided on one side of the transmission shaft, a fourth rolling bearing is installed at the lower end of the transmission rod, and the lower end of the fourth rolling bearing is installed on the support platform, a first sprocket is installed at the lower end of the transmission shaft, a second sprocket is installed on the transmission rod, the first sprocket and the second sprocket are connected by a transmission chain, a fifth rolling bearing is installed at the upper end of the transmission rod, the fifth rolling bearing is installed on the square box through a fixed shaft, a first gear is installed at the upper end of the transmission rod, the first gear is meshed with the second gear, a rotating rod is installed on the second gear, a sixth rolling bearing is installed at the lower end of the rotating rod, and the sixth rolling bearing is installed on the square box through a connecting shaft, a square opening is opened at the lower end of the tapered discharge pipe, an interception plate is installed in the square opening, the second gear and the interception plate are connected by a crank slider mechanism, only half of the first gear has teeth, and one rotation of the first gear can cause the second gear to rotate one circle.

[0021] A carrier drying device, the shaking frame includes a moving rod located in a drying box body, a plurality of toggle plates are installed at the lower end of the moving rod, an inlet and outlet are opened on one side of the drying box body, telescopic rods are installed at both ends of the moving rod, one end of the telescopic rod passes through the inlet and outlet and extends to the outside of the drying box body, a first moving rack is installed at one end of the telescopic rod, a third gear is engaged with the upper end of the first moving rack, a rotating column is installed on the third gear, a seventh rolling bearing is installed on the rotating column, the seventh rolling bearing is installed on the square connecting block through a fixed column, an avoidance opening for avoiding the fixed column is opened on one side of the square box body, a reset plate is installed at the lower end of the first moving rack, a support block installed on the square box body is provided below the telescopic rod, and a support block installed on the upper end of the support block There is a support wheel, the upper end of the support wheel contacts the lower end of the telescopic rod, the lower end of the support block is installed with a support plate, the reset plate and the support plate are connected by a reset spring, and a fourth gear is installed at one end of the rotating column. An L-shaped movable platform is provided on one side above the support platform, guide blocks are installed on both sides of the lower end of the L-shaped movable platform, a guide slide is installed at the upper end of the support platform, and the lower end of the guide block extends into the guide slide, and multiple second movable racks are installed on one side of the L-shaped movable platform. The second movable rack is located on one side of the heating box, and the second movable rack can be meshed with the fourth gear. A third movable rack is installed on the upper end of the L-shaped movable platform, and a fifth gear is installed on the upper end of the feed screw. The fifth gear is meshed with the third movable rack, and one end of the fifth gear is missing three teeth.

[0022] The beneficial effects of the present invention are as follows: the catalyst analyzes the characteristics of ultra-high temperature flue gas based on actual conditions, conducts in-depth theoretical analysis of the principle of catalyst deactivation caused by temperature, innovatively adds catalytic promoters, increases the catalyst specific surface area and thermal stability, reduces catalyst sintering and lattice changes, that is, protects the catalyst specific surface area, and improves the overall high-temperature resistance of the catalyst by adjusting the ratio of active material to catalyst and the processing method through the compounding of additives and improvements in processing technology;

[0023] When drying the carrier, the carrier can be spread out first to reduce its thickness, and then moved to the bottom of the heating box for drying. The carrier can be shaken during drying to improve the drying efficiency of the carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic flow chart of a method for preparing a dual-support denitration catalyst according to the present invention;

[0025] Figure 2 It is a structural schematic diagram of a carrier drying device according to the present invention;

[0026] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0027] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0028] Figure 5 is a schematic cross-sectional view of a carrier drying device according to the present invention as viewed from the side;

[0029] Figure 6 yes Figure 5 A partial enlarged view of point C in the middle;

[0030] Figure 7 yes Figure 5 A partial enlarged view of point D in the middle;

[0031] Figure 8 Schematic diagram of the connection relationship between the rotating shaft and the cam of the present invention;

[0032] Figure 9 It is a partial schematic diagram of the rocking frame of the present invention;

[0033] In the figure, 1. conveyor belt device; 2. fixed platform; 3. transmission belt; 4. support platform; 5. support leg; 6. collection box; 7. material box; 8. conical discharge pipe; 9. servo motor; 10. feed screw; 11. square box; 12. L-shaped fixing plate; 13. first rolling bearing; 14. feed port; 15. protective door; 16. connecting rod; 17. holding platform; 18. annular protective platform; 19. annular groove; 20. guide wheel; 21. drying Box body; 22, square connecting block; 23, square connecting groove; 24, guide hole; 25, guide rod; 26, drive frame; 27, heating box; 28, fixing rod; 29, rocking frame; 30, self-locking reducer; 31, first bevel gear; 32, one-way bearing; 33, second bevel gear; 34, rotating shaft; 35, circular through hole; 36, second rolling bearing; 37, cam; 38, L-shaped lifting plate; 39, third bevel gear; 40, fourth bevel gear Gear; 41, transmission shaft; 42, third rolling bearing; 43, transmission rod; 44, fourth rolling bearing; 45, first sprocket; 46, second sprocket; 47, transmission chain; 48, fifth rolling bearing; 49, fixed shaft; 50, first gear; 51, second gear; 52, rotating rod; 53, sixth rolling bearing; 54, connecting shaft; 55, square opening; 56, intercepting plate; 57, moving rod; 58, toggle plate; 59, inlet and outlet ; 60. Telescopic rod; 61. First movable rack; 62. Third gear; 63. Rotating column; 64. Seventh rolling bearing; 65. Fixed column; 66. Avoidance; 67. Reset plate; 68. Support block; 69. Support wheel; 70. Support plate; 71. Reset spring; 72. Fourth gear; 73. L-shaped movable platform; 74. Guide block; 75. Guide slide; 76. Second movable rack; 77. Third movable rack; 78. Fifth gear. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with specific embodiments:

[0035] A dual-support denitrification catalyst is composed of Al2O3, SiO2, V2O5, and WO3, wherein Al2O3 and SiO2 are mixed in a mass ratio of 1:4 as a support, and V2O5 and WO3 are mixed into the support, with a mass ratio of V2O5 to WO3 of 1:1. The mass of V2O5 and WO3 in the catalyst is 0.5%-1.05%.

[0036] A method for preparing a dual-support denitration catalyst comprises the following steps:

[0037] Step 1: Aluminum hydroxide powder and silica sol are mixed, added to deionized water of the same mass, heated and stirred, and then the solution is filtered to obtain a filter cake, the filter cake is dried, and then the filter cake is placed in a muffle furnace for calcination to obtain a powdered carrier;

[0038] Step 2: Mix ammonium metavanadate, ammonium metatungstate and the aforementioned carrier, add deionized water of the same mass, place in an ultrasonic device for ultrasonic immersion, filter the solution to obtain a block filter cake;

[0039] Step 3: Dry the filter cake in a drying oven, and then calcine it in a muffle furnace to obtain a dual-carrier ultra-high temperature denitrification catalyst.

[0040] Furthermore, the water bath heating temperature in step 1 is 80-85°C, the stirring time is 45-50 minutes, the filter cake is placed at 105°C and dried for 6 hours, and the dried filter cake is placed in a muffle furnace and calcined for 5 hours at a calcination temperature of 550-650°C.

[0041] Furthermore, the ultrasonic immersion time in step 2 is 30 minutes.

[0042] Furthermore, the block filter cake in step three is dried in a drying oven for 6 hours at a drying temperature of 105°C, and the dried block filter cake is placed in a muffle furnace and calcined for 5 hours at a calcination temperature of 500°C. The mass ratio of V2O5 and WO3 loaded in the dual-carrier ultra-high temperature denitrification catalyst is 1:1, and the mass percentage of V2O5 and WO3 in the catalyst is 0.5%-1.05%.

[0043] Specifically, taking a preparation method of a dual-support denitration catalyst as an example, the first preferred step is as follows:

[0044] Step 1: Mix aluminum hydroxide powder and silica sol, add to the same mass of deionized water, heat to 85°C in a water bath, stir for 45 minutes, filter the solution, dry the filter cake at 105°C for 6 hours, and then place the filter cake in a muffle furnace at 550°C for 5 hours to obtain a carrier. The mass ratio of aluminum oxide to silicon oxide in the carrier is 1:4;

[0045] Step 2: Mix ammonium metavanadate, ammonium metatungstate and the aforementioned carrier, add deionized water of the same mass, place in an ultrasonic device and ultrasonically immerse for 30 minutes, filter the solution to obtain a filter cake;

[0046] Step 3: Dry the filter cake in a drying oven at 105°C for 6 hours, and then calcine it in a muffle furnace at 500°C for 5 hours to obtain a dual-support ultra-high temperature denitration catalyst. The mass ratio of V2O5 and WO3 loaded in the dual-support ultra-high temperature denitration catalyst is 1:1, and V2O 5、 The mass percentage of WO3 in the catalyst is 0.5%.

[0047] The second preferred step is as follows:

[0048] Step 1: Mix aluminum hydroxide powder and silica sol, add them to deionized water of the same mass, heat them in a water bath to 80°C, stir for 60 minutes, filter the solution, dry the filter cake at 105°C for 6 hours, and then place the filter cake in a muffle furnace and calcine it at 650°C for 5 hours to obtain a carrier. The mass ratio of aluminum oxide to silicon oxide in the carrier is 1:4.

[0049] Step 2: Mix ammonium metavanadate, ammonium metatungstate and the aforementioned carrier, add deionized water of the same mass, place in an ultrasonic device and ultrasonically immerse for 30 minutes, filter the solution to obtain a filter cake;

[0050] Step 3: Dry the filter cake in a drying oven at 105°C for 6 hours and then calcine it in a muffle furnace at 500°C for 5 hours to obtain a dual-support ultra-high temperature denitration catalyst. The mass ratio of V2O5 and WO3 loaded in the dual-support ultra-high temperature denitration catalyst is 1:1, and the mass percentage of V2O5 and WO3 in the catalyst is 1.05%.

[0051] The following is combined with Figure 2-9 A carrier drying device is described in detail:

[0052] A carrier drying device includes a conveyor belt device 1, which includes a fixed platform 2 and a transmission belt 3. Support platforms 4 are installed on both sides of the fixed platform 2. The four corners of the lower surface of the support platform 4 are installed on the ground through support legs 5. A collecting box 6 is placed on the ground on one side of the conveyor belt device 1. A material spreading mechanism is installed on the conveyor belt device 1. A drying mechanism is installed on the conveyor belt device 1; the material spreading mechanism includes a material box 7 installed above the support platform 4, a tapered discharge pipe 8 is installed at the lower end of the material box 7, and a material box 7 is installed on one side of the upper end of the support platform 4. There is a servo motor 9, the rotating end of the servo motor 9 is connected to the feed screw 10 through a coupling, a square box 11 is provided above the feed screw 10, the square box 11 is installed on the support platform 4 through an L-shaped fixing plate 12, first rolling bearings 13 are installed at both ends of the square box 11, the feed screw 10 passes through the first rolling bearing 13, a feed port 14 is opened at the upper end of the square box 11, the lower end of the tapered discharge pipe 8 is connected to the feed port 14, a protective door 15 is installed at the lower end of the tapered discharge pipe 8, and multiple connecting rods 16 are installed on the transmission belt 3 , a placing table 17 is installed on the upper end of the connecting rod 16, an annular protective platform 18 is installed on the outer side of the fixed platform 2, an annular groove 19 is opened on the inner side of the annular protective platform 18, guide wheels 20 are installed on both sides of the placing table 17, one end of the guide wheel 20 extends into the annular groove 19, a drying box 21 that can be moved up and down is provided above the placing table 17, a square connecting block 22 is installed on the upper end of the drying box 21, a square connecting groove 23 is opened at the lower end of the square box 11, the square connecting block 22 can be moved into the square connecting groove 23, and the upper end of the placing table 17 is opened. Multiple guide holes 24 are provided, and multiple guide rods 25 are installed at the lower end of the drying box 21. The lower ends of the guide rods 25 extend into the guide holes 24. A driving frame 26 is installed on the support platform 4, and the driving frame 26 can drive the drying box 21 to move up and down; the drying mechanism includes a heating box 27 located above the conveyor device 1, and the heating box 27 is installed on the support platform 4 through a fixing rod 28. The drying box 21 can be moved to the bottom of the heating box 27. A shaking frame 29 is installed in the drying box 21, and the shaking frame 29 can make the material in the drying box 21 shake;

[0053] The drying process of the carrier by this device is as follows: the staff puts the powdered carrier into the material box 7, starts the conveyor belt device 1, and the transmission belt 3 moves. The transmission belt 3 drives the connecting rod 16 and the holding platform 17 to move. The holding platform 17 drives the drying box 21 to move through the guide hole 24 and the guide rod 25. One end of the guide wheel 20 extends into the annular groove 19, which can support and limit the holding platform 17, so that the holding platform 17 and the drying box 21 are kept perpendicular to the transmission belt 3. When the transmission belt 3 moves, The drying box 21 can be driven to move to the bottom of the square box 11, and then the driving frame 26 drives the drying box 21 to move upward. The guide hole 24 and the guide rod 25 can ensure the moving direction of the drying box 21, and make the upper end of the square connecting block 22 enter the square connecting groove 23. Then the protective door 15 is opened. Under the action of gravity, the material can fall into the space formed by the square box 11 and the drying box 21 through the tapered discharge pipe 8. A screw conveyor can also be installed in the material box 7 to facilitate discharge. When the material enters the drying box After 21, the servo motor 9 is started to rotate, and the servo motor 9 can drive the feeding screw 10 to rotate, and make the falling material move to the end of the feeding screw 10, and then the material can be spread out. After a period of time, the protective door 15 is closed, and the servo motor 9 continues to rotate for a period of time. After the remaining material is spread out, the servo motor 9 is turned off, and the drying box 21 is dropped onto the holding table 17 through the driving frame 26, and then the holding table 17 and the drying box 21 are driven to move by the transmission belt 3, and the drying box 21 is moved to the bottom of the heating box 27 for During drying, the material in the drying box 21 is shaken by the shaking frame 29, which can improve work efficiency. When the drying box 21 moves, the transmission belt 3 can move the next drying box 21 to the bottom of the square box 11, and then drive the drying box 21 to move upward through the driving frame 26, which can facilitate re-feeding. The above process is repeated to continuously spread and dry the material. When the drying box 21 moves to the end of the conveyor belt device 1, the material can fall into the collection box 6 for collection under the action of gravity.

[0054] Refer to the instruction manual Figure 2 , Instruction Manual Figure 3 and instructions attached Figure 8The driving frame 26 includes a self-locking reducer 30 installed on the upper end of the support platform 4. A first bevel gear 31 is installed at the power input end of the self-locking reducer 30. A one-way bearing 32 is installed at one end of the feed screw 10. A second bevel gear 33 is installed on the outside of the one-way bearing 32. The first bevel gear 31 and the second bevel gear 33 are meshed. The power output end of the self-locking reducer 30 is connected to a rotating shaft 34. A circular through hole 35 is opened on the fixed platform 2. The rotating shaft 34 passes through the circular through hole 35. Second rolling bearings 36 are installed on both sides of the circular through hole 35. The outer side of the rotating shaft 34 is fixedly connected to the inner ring of the second rolling bearing 36. Cams 37 are installed at both ends of the rotating shaft 34. L-shaped lifting plates 38 are installed on the surfaces of both sides of the drying box 21. The L-shaped lifting plates 38 are located above the cams 37.

[0055] The process of the driving frame 26 driving the drying box 21 to move up and down is as follows: when the servo motor 9 rotates forward to drive the feed screw 10 to rotate, the feed screw 10 can rotate inside the one-way bearing 32, and will not drive the one-way bearing 32 and the second bevel gear 33 to rotate. When the servo motor 10 rotates reversely to drive the feed screw 10 to rotate, it can drive the one-way bearing 32 and the second bevel gear 33 to rotate. The second bevel gear 33 is engaged with the first bevel gear 31, and can drive the first bevel gear 31 and the power input end of the self-locking reducer 30 to rotate. After deceleration by the self-locking reducer 30, the rotating shaft 34 can be driven by the power output end of the self-locking reducer 30. The rotating shaft 34 can drive the cam 37 to rotate. When the end of the cam 37 closer to the rotating shaft 34 rotates upward, the L-shaped lifting plate 38 and the drying box 21 can be pushed upward to facilitate feeding. Then the servo motor 9 is started to rotate forward to spread the material. The self-locking effect of the self-locking reducer 30 can prevent the rotating shaft 34 from rotating, so that the drying box 21 can be kept at a higher position. After the material is spread, the servo motor 9 is started again to reverse and drive the rotating shaft 34 to rotate, so that the lower end of the cam 37 rotates upward, and then the drying box 21 can return to its original position under the action of gravity.

[0056] Refer to the instruction manual Figure 2 , Instruction Manual Figure 3 and instructions attached Figure 4, the protective door 15 includes a third bevel gear 39 mounted on one end of the rotating shaft 34, the third bevel gear 39 is meshed with a fourth bevel gear 40, a transmission shaft 41 is mounted on the fourth bevel gear 40, a third rolling bearing 42 is mounted on the upper end of the transmission shaft 41, one end of the third rolling bearing 42 is mounted on the self-locking reducer 30, a transmission rod 43 is provided on one side of the transmission shaft 41, a fourth rolling bearing 44 is mounted on the lower end of the transmission rod 43, and the lower end of the fourth rolling bearing 44 is mounted on the support platform 4, a first sprocket 45 is mounted on the lower end of the transmission shaft 41, a second sprocket 46 is mounted on the transmission rod 43, the first sprocket 45 and the second sprocket 46 are connected by a transmission chain 47, and a fifth sprocket 46 is mounted on the upper end of the transmission rod 43. Rolling bearing 48, the fifth rolling bearing 48 is mounted on the square box 11 through a fixed shaft 49, a first gear 50 is mounted on the upper end of the transmission rod 43, the first gear 50 is meshed with a second gear 51, a rotating rod 52 is mounted on the second gear 51, a sixth rolling bearing 53 is mounted on the lower end of the rotating rod 52, and the sixth rolling bearing 53 is mounted on the square box 11 through a connecting shaft 54, a square opening 55 is opened at the lower end of the tapered discharge pipe 8, an intercepting plate 56 is mounted in the square opening 55, the second gear 51 and the intercepting plate 56 are connected by a crank slider mechanism, only half of the first gear 50 has teeth, and one rotation of the first gear 50 can cause the second gear 51 to rotate one circle;

[0057] The process of opening and closing the protective door 15 is as follows: Under normal conditions, one end of the intercepting plate 56 passes through the square opening 55 and extends into the tapered discharge pipe 8 to prevent the material from falling. When the servo motor 9 reverses and drives the rotating shaft 34 to rotate, the drying box 21 can be pushed upward by the cam 37. One end of the cam 37 has a circular edge. At this time, when the rotating shaft 34 continues to rotate, it will not cause the drying box 21 to move up and down. When the rotating shaft 34 rotates, it can drive the third bevel gear 39 to rotate. The third bevel gear 39 and the fourth bevel gear 4 0 meshes, which can drive the fourth bevel gear 40, the transmission shaft 41, and the first sprocket 45 to rotate. The first sprocket 45 and the second sprocket 46 are connected by a transmission chain 47, which can make the second sprocket 46, the transmission rod 43, and the first gear 50 rotate. The first gear 50 has teeth only at half of the position. Therefore, when the drying box 21 rises to the highest point, the first gear 50 and the second gear 51 will be meshed. Since the outer diameter of the first gear 50 is larger than the outer diameter of the second gear 51, when the first gear 50 rotates four times, the second gear 51 will be meshed. When the material is spread evenly, the servo motor 9 is started to rotate forward, and the intercepting plate 56 is pushed back to its original position, and the lower end of the conical discharge pipe 8 is closed, and the servo motor 9 is started to rotate forward to spread the material evenly. After the material is spread evenly, the servo motor 9 is started to rotate backward, and the gear transmission is used to drive the rotating shaft 34 to rotate. At this time, the smaller end of the cam 37 can be rotated upward, and the drying box 21 can be moved downward under the action of gravity. When the rotating shaft 34 rotates, the first gear 50 will also be rotated. At this time, the position where the first gear 50 has no teeth rotates to the side of the second gear 51, and the second gear 51 will not be rotated.

[0058] Refer to the instruction manual Figure 2 , Instruction Manual Figure 3 , Instruction Manual Figure 4 , Instruction Manual Figure 5 , Instruction Manual Figure 6 and instructions attached Figure 9, the shaking frame 29 includes a moving rod 57 located in the drying box 21, and a plurality of toggle plates 58 are installed at the lower end of the moving rod 57. An inlet and outlet 59 is opened on one side of the drying box 21. Telescopic rods 60 are installed at both ends of the moving rod 57. One end of the telescopic rod 60 passes through the inlet and outlet 59 and extends to the outside of the drying box 21. A first moving rack 61 is installed at one end of the telescopic rod 60. The upper end of the first moving rack 61 is engaged with a third gear 62. A rotating column 63 is installed on the third gear 62. A seventh rolling bearing 64 is installed on the rotating column 63. The seventh rolling bearing 64 is installed on the square connecting block 22 through a fixed column 65. A avoidance opening 66 for avoiding the fixed column 65 is opened on one side of the square box 11. A reset plate 67 is installed at the lower end of the first moving rack 61. A support block 68 installed on the square box 11 is provided below the telescopic rod 60. A support block 68 is installed on the upper end of the support block Wheel 69, the upper end of the support wheel 69 contacts the lower end of the telescopic rod 60, and a support plate 70 is installed at the lower end of the support block 68. The reset plate 67 and the support plate 70 are connected by a reset spring 71. A fourth gear 72 is installed at one end of the rotating column 63, and an L-shaped movable platform 73 is provided on one side above the support platform 4. Guide blocks 74 are installed on both sides of the lower end of the L-shaped movable platform 73. A guide slide 75 is installed on the upper end of the support platform 4. The lower end of the guide block 74 extends into the guide slide 75. A plurality of second movable racks 76 are installed on one side of the L-shaped movable platform 73. The second movable rack 76 is located on one side of the heating box 27. The second movable rack 76 can mesh with the fourth gear 72. A third movable rack 77 is installed on the upper end of the L-shaped movable platform 73. A fifth gear 78 is installed on the upper end of the feed screw 10. The fifth gear 78 meshes with the third movable rack 77. One end of the fifth gear 78 lacks three teeth;

[0059] The process of shaking the material by the shaking frame 29 is as follows: Under normal conditions, the moving rod 57 and the toggle plate 58 are both located on one side of the drying box 21. When the feed screw 10 rotates, the fifth gear 78 is driven to rotate. The fifth gear 78 is engaged with the third moving rack 77, which can drive the third moving rack 77 to move to one side. The third moving rack 77 can drive the second moving rack 76 to move through the L-shaped moving platform 73. The guide block 74 and the guide slide 75 can ensure the moving direction of the L-shaped moving platform 73. In the direction, the second movable rack 76 is engaged with the fourth gear 72, which can drive the fourth gear 72, the rotating column 63, and the third gear 62 to rotate. The third gear 62 is engaged with the first movable rack 61, which can push the first movable rack 61, the telescopic rod 60, the movable rod 57, and the toggle plate 58 toward the inside of the drying box 21. The support block 68 and the support wheel 69 can support the first movable rack 61 and reduce the friction when the first movable rack 61 moves. When the toggle plate 58 moves, it can be After the fifth gear 78 is meshed with the third moving rack 77 again, the third moving rack 77 can be pushed again, and the toggle plate 58 can be moved through the gear transmission. The material can be shaken by the elastic force of the reset spring 71, and the first moving rack 61 can be pushed back to its original position, and the third gear 62 can be reversed. When the third gear 62 reverses, the fourth gear 72 is driven to reverse through the rotating shaft 63. Through the engagement of the fourth gear 72 with the second moving rack 76, the second moving rack 76, the L-shaped moving platform 73, and the third moving rack 77 can be returned to their original positions. Then, after the fifth gear 78 is meshed with the third moving rack 77 again, the third moving rack 77 can be pushed again, and the toggle plate 58 can be moved through the gear transmission. The material can be shaken by the continuous rotation of the feed screw 10.

[0060] The above are only preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. As long as the technical effects of the present invention are achieved by any same or similar means, they should fall within the scope of protection of the present invention.

[0061] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Any changes that may be made to certain parts thereof by those skilled in the art all reflect the principles of the present invention and fall within the scope of protection of the present invention.

Claims

1. A carrier drying device, comprising a conveyor belt device (1), wherein the conveyor belt device (1) comprises a fixed platform (2) and a transmission belt (3), support platforms (4) are installed on both sides of the fixed platform (2), and the four corners of the lower surface of the support platform (4) are installed on the ground through support legs (5), and a collection box (6) is placed on the ground on one side of the conveyor belt device (1), characterized in that: The conveyor belt device (1) is equipped with a material spreading mechanism, and the conveyor belt device (1) is equipped with a drying mechanism; The material spreading mechanism includes a material box (7) installed above the support platform (4), a conical discharge pipe (8) is installed at the lower end of the material box (7), a servo motor (9) is installed on one side of the upper end of the support platform (4), the rotating end of the servo motor (9) is connected to the feed screw (10) through a coupling, a square box (11) is provided above the feed screw (10), the square box (11) is installed on the support platform (4) through an L-shaped fixing plate (12), first rolling bearings (13) are installed at both ends of the square box (11), the feed screw (10) passes through the first rolling bearing (13), a feed port (14) is opened at the upper end of the square box (11), the lower end of the conical discharge pipe (8) is connected to the feed port (14), a protective door (15) is installed at the lower end of the conical discharge pipe (8), a plurality of connecting rods (16) are installed on the transmission belt (3), and a holding rod (16) is installed at the upper end of the connecting rod (16). Table (17), the fixed table (2) is installed with an annular protective table (18) on the outside, and an annular groove (19) is opened on the inside of the annular protective table (18). Guide wheels (20) are installed on both sides of the surface of the holding table (17), and one end of the guide wheel (20) extends into the annular groove (19). A drying box (21) that can move up and down is provided above the holding table (17). A square connecting block (22) is installed on the upper end of the drying box (21). A square connecting groove (23) is opened at the lower end of the square box (11). The square connecting block (22) can be moved into the square connecting groove (23). A plurality of guide holes (24) are opened at the upper end of the holding table (17). A plurality of guide rods (25) are installed at the lower end of the drying box (21). The lower end of the guide rod (25) extends into the guide hole (24). A driving frame (26) is installed on the support table (4). The driving frame (26) can drive the drying box (21) to move up and down; The drying mechanism includes a heating box (27) located above the conveyor belt device (1). The heating box (27) is mounted on the support platform (4) via a fixing rod (28). The drying box (21) can be moved below the heating box (27). A shaking frame (29) is installed in the drying box (21). The shaking frame (29) can cause the material in the drying box (21) to shake.

2. A carrier drying device according to claim 1, characterized in that: The driving frame (26) includes a self-locking reducer (30) installed on the upper end of the support platform (4), a first bevel gear (31) is installed on the power input end of the self-locking reducer (30), a one-way bearing (32) is installed on one end of the feed screw (10), a second bevel gear (33) is installed on the outer side of the one-way bearing (32), the first bevel gear (31) and the second bevel gear (33) are meshed, and a rotating shaft (34) is connected to the power output end of the self-locking reducer (30), a circular through hole (35) is opened on the fixed platform (2), the rotating shaft (34) passes through the circular through hole (35), and second rolling bearings (36) are installed on both sides of the circular through hole (35), the outer side of the rotating shaft (34) and the inner ring of the second rolling bearing (36) are fixedly connected, and cams (37) are installed on both ends of the rotating shaft (34), and L-shaped lifting plates (38) are installed on the surfaces of both sides of the drying box (21), and the L-shaped lifting plates (38) are located above the cams (37).

3. A carrier drying device according to claim 2, characterized in that: The protective door (15) includes a third bevel gear (39) mounted on one end of a rotating shaft (34), the third bevel gear (39) is meshed with a fourth bevel gear (40), a transmission shaft (41) is mounted on the fourth bevel gear (40), a third rolling bearing (42) is mounted on the upper end of the transmission shaft (41), one end of the third rolling bearing (42) is mounted on the self-locking reducer (30), a transmission rod (43) is provided on one side of the transmission shaft (41), a fourth rolling bearing (44) is mounted on the lower end of the transmission rod (43), the lower end of the fourth rolling bearing (44) is mounted on the support platform (4), a first sprocket (45) is mounted on the lower end of the transmission shaft (41), a second sprocket (46) is mounted on the transmission rod (43), the first sprocket (45) and the second sprocket (46) are connected by a transmission chain (47), and a transmission rod (43) is mounted on the upper end. A fifth rolling bearing (48) is mounted on the square box (11) via a fixed shaft (49). A first gear (50) is mounted on the upper end of the transmission rod (43). The first gear (50) is meshed with a second gear (51). A rotating rod (52) is mounted on the second gear (51). A sixth rolling bearing (53) is mounted on the lower end of the rotating rod (52). The sixth rolling bearing (53) is mounted on the square box (11) via a connecting shaft (54). A square opening (55) is opened at the lower end of the tapered discharge pipe (8). An intercepting plate (56) is mounted in the square opening (55). The second gear (51) and the intercepting plate (56) are connected via a crank slider mechanism. Only half of the first gear (50) has teeth. One rotation of the first gear (50) can cause the second gear (51) to rotate one rotation.

4. A carrier drying device according to claim 3, characterized in that: The shaking frame (29) includes a moving rod (57) located in the drying box (21), a plurality of toggling plates (58) are installed at the lower end of the moving rod (57), an inlet and outlet (59) are opened on one side of the drying box (21), and telescopic rods (60) are installed at both ends of the moving rod (57), one end of the telescopic rod (60) passes through the inlet and outlet (59) and extends to the outside of the drying box (21), and a first moving rack (61) is installed at one end of the telescopic rod (60), and the upper end of the first moving rack (61) is meshed with a third gear (62), and the third gear (63) is engaged with the third gear (64). A rotating column (63) is installed on the three gears (62), a seventh rolling bearing (64) is installed on the rotating column (63), the seventh rolling bearing (64) is installed on the square connecting block (22) through the fixed column (65), a side of the square box (11) is provided with an avoidance opening (66) for avoiding the fixed column (65), a reset plate (67) is installed at the lower end of the first movable rack (61), a support block (68) installed on the square box (11) is provided below the telescopic rod (60), and a support block (68) is installed on the upper end of the support block (68). A support wheel (69) is provided, wherein the upper end of the support wheel (69) contacts the lower end of the telescopic rod (60), a support plate (70) is installed at the lower end of the support block (68), the reset plate (67) and the support plate (70) are connected by a reset spring (71), a fourth gear (72) is installed at one end of the rotating column (63), an L-shaped moving platform (73) is provided on one side above the support platform (4), guide blocks (74) are installed on both sides of the lower end of the L-shaped moving platform (73), a guide slide (75) is installed at the upper end of the support platform (4), and the guide block (74) is installed. The lower end extends into the guide slide (75), and a plurality of second movable racks (76) are installed on one side of the L-shaped movable platform (73). The second movable racks (76) are located on one side of the heating box (27). The second movable racks (76) can be engaged with the fourth gear (72). A third movable rack (77) is installed on the upper end of the L-shaped movable platform (73), and a fifth gear (78) is installed on the upper end of the feed screw (10). The fifth gear (78) is engaged with the third movable rack (77), and one end of the fifth gear (78) lacks three teeth.

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