阅读说明：本技术 一种乙硼烷的制备装置及方法 (Preparation device and method of diborane ) 是由 林坤 王少波 马朝选 闫云 王亚峰 王斌 张琴 于 2021-01-27 设计创作，主要内容包括：本发明涉及一种乙硼烷的制备装置及方法,属于化工技术领域。包括制备壳体、转轴、搅拌板、转杆、进料管、储料壳体、出气管、气管、进液管、电机、吸沫机构、第一传动机构、第二传动机构、启闭机构、出料机构和泵气机构；制备壳体的顶部设有出气管同时还贯穿转动连接有进料管,内部设有与进料管下端固定的储料壳体,底部贯穿转动连接有转杆,转杆上设有搅拌板和吸沫机构,转杆上端设有条形腔,条形腔的内底部安装有折叠气囊,折叠气囊的上端固定有抵杆,抵杆与储料壳体间设有出料机构；第一传动机构、出料机构与泵气机构的配合能控制出料速度与出料量。第二传动机构能在电机的带动下同时实现搅拌板搅拌提高制备速度。吸沫机构能及时吸收掉泡沫层。(The invention relates to a preparation device and a preparation method of diborane, and belongs to the technical field of chemical industry. The device comprises a preparation shell, a rotating shaft, a stirring plate, a rotating rod, a feeding pipe, a storage shell, an air outlet pipe, an air pipe, a liquid inlet pipe, a motor, a foam absorbing mechanism, a first transmission mechanism, a second transmission mechanism, an opening and closing mechanism, a discharging mechanism and an air pumping mechanism; the top of the preparation shell is provided with an air outlet pipe and is also connected with a feed pipe in a penetrating and rotating manner, a storage shell fixed with the lower end of the feed pipe is arranged in the preparation shell, the bottom of the preparation shell is connected with a rotating rod in a penetrating and rotating manner, the rotating rod is provided with a stirring plate and a foam absorbing mechanism, the upper end of the rotating rod is provided with a strip-shaped cavity, a folding air bag is arranged at the inner bottom of the strip-shaped cavity, the upper end of the folding air bag is fixed with a supporting; the first transmission mechanism, the discharging mechanism and the air pumping mechanism are matched to control the discharging speed and the discharging amount. The second transmission mechanism can simultaneously realize stirring of the stirring plate under the driving of the motor so as to improve the preparation speed. The foam absorbing mechanism can absorb the foam layer in time.)

1. A diborane preparation device is characterized in that: the device comprises a preparation shell (1), a rotating shaft (2), a stirring plate (3), a rotating rod (5), a feeding pipe (14), a storage shell (10), an air outlet pipe (16), an air pipe (17), a liquid inlet pipe (20), a motor (25), a foam absorbing mechanism, a first transmission mechanism, a second transmission mechanism, an opening and closing mechanism, a discharging mechanism and an air pumping mechanism;

the device comprises a preparation shell (1), an air outlet pipe (16) is arranged at the top of the preparation shell (1), and is also connected with a feeding pipe (14) in a penetrating and rotating mode, a storage shell (10) fixed to the lower end of the feeding pipe (14) is arranged in the preparation shell (1), a rotating rod (5) is connected to the bottom of the preparation shell (1) in a penetrating and rotating mode, a stirring plate (3) and a foam absorbing mechanism are arranged on the rotating rod (5), a strip-shaped cavity is arranged at the upper end of the rotating rod (5), a folding air bag (6) is installed at the inner bottom of the strip-shaped cavity, a supporting rod (7) penetrating the strip-shaped cavity is fixed to the upper end of the folding air bag; a liquid inlet pipe (20) and a discharge pipe are arranged on one side wall of the preparation shell (1), a fixing plate which is vertically arranged is fixed on the other side wall, a rotating shaft (2) is connected to the fixing plate in a penetrating and rotating mode, the upper end of the rotating shaft (2) is connected with the material inlet pipe (14) through a first transmission mechanism, the lower end of the rotating shaft (2) is connected with a rotating rod (5) through a second transmission mechanism, a motor (25) is installed at the upper end of the preparation shell (1), and the first transmission mechanism is connected with the motor (25); the bottom of the material storage shell (10) is provided with a plurality of discharge holes (23), cavities are arranged on two sides of each discharge hole (23), and opening and closing mechanisms are arranged in the cavities; the upper end of the preparation shell (1) is provided with an air pumping mechanism, and the air pumping mechanism is matched with the feeding pipe (14) to realize air pumping and air suction; one end of the air pipe (17) is connected with the air pumping mechanism, and the other end of the air pipe penetrates through the bottom of the rotating rod (5) and is connected with the folding air bag (6); when the air pumping mechanism pumps air, the folding air bag (6) is inflated and expanded, the abutting rod (7) drives the discharging structure to move upwards, the opening and closing mechanism is opened, and the discharging port (23) is communicated with the discharging structure; when the air pumping mechanism inhales, the air in the folding air bag (6) is sucked back, the abutting rod (7) drives the discharging structure to move upwards, and the opening and closing mechanism is closed.

2. A diborane manufacturing apparatus as defined in claim 1 wherein: first drive mechanism includes first gear (12), second gear (11) and third gear (13), the output shaft end of motor (25) is fixed with first gear (12), and second gear (11) are fixed on the outer wall of inlet pipe (14) and with first gear (12) meshing, and third gear (13) are fixed the upper end of pivot (2) and with first gear (12) meshing.

3. A diborane manufacturing apparatus as defined in claim 2 wherein: the diameter of the first gear (12) is larger than that of the third gear (13).

4. A diborane manufacturing apparatus as defined in claim 1 wherein: the second transmission mechanism comprises a first belt pulley (19), a second belt pulley (18) and a belt, the first belt pulley (19) is fixed at the lower end of the rotating shaft (2), the second belt pulley (18) is fixed at the lower end of the rotating rod (5), and the belt is sleeved between the first belt pulley (19) and the second belt pulley (18).

5. A diborane manufacturing apparatus as defined in claim 1 wherein: inhale foam mechanism and be responsible for (21) and soil pick-up pump including inhaling foam branch pipe (4), inhale the foam branch pipe (4) and fix on bull stick (5) outer wall, the outer wall of inhaling foam branch pipe (4) is equipped with a plurality of foam holes of inhaling, be equipped with in bull stick (5) and inhale the chamber of being connected of foam branch pipe (4) intercommunication with a plurality of, the bottom of connecting the chamber is rotated and is connected with the foam of inhaling who runs through bull stick (5) and is responsible for (21), inhales the foam and is responsible for (21) and be connected with the soil pick-up pump.

6. A diborane manufacturing apparatus as defined in claim 1 wherein: discharge mechanism is including fixing the slide bar at the bottom both ends of storage casing (10), the slide bar lower extreme runs through and is equipped with connecting plate (8), and the cover is equipped with first spring (15) on the slide bar, and the both ends of first spring (15) are contradicted with storage casing (10) and connecting plate (8) respectively, are equipped with many blanking pipes (9) on connecting plate (8), the lower extreme of connecting plate (8) with support pole (7) and connect.

7. A diborane manufacturing apparatus as defined in claim 1 wherein: the opening and closing mechanism comprises a supporting block arranged in the cavity, a wedge-shaped block (22) extending into the discharge hole (23) is fixed on one side of the supporting block, and the supporting block is elastically connected with the inner wall of the cavity through a second spring (24).

8. A diborane manufacturing apparatus as defined in claim 1 wherein: the air pumping mechanism comprises a cam (26), a device cavity (31), an air cavity (28), a piston (29) and a support column (27), the cam (26) is fixed on the outer wall of the feeding pipe (14), the device cavity (31) is located in the wall of the upper end shell of the preparation shell (1), the air cavity (28) is arranged on one side of the device cavity (31), the piston (29) is arranged in the air cavity (28), the support column (27) extending into the device cavity (31) is fixed on the side wall of the piston (29), a third spring (30) is sleeved on the support column (27), the tail end of the support column (27) is abutted against the outer wall of the cam (26) through a roller, and the air cavity (28) is connected with the air pipe (17).

9. A method for preparing diborane is characterized in that: the device of claim 1 when manufactured, the method steps comprising:

(1) injecting phosphoric acid into the preparation shell (1) through a liquid inlet pipe (20) to inject KBH₄Is added into the storage shell (10) through a feeding pipe (14);

(2) the feeding pipe (14) is plugged by a sealing cover, and the preparation shell (1) is vacuumized by using a vacuum pump;

(3) the starting motor (25) drives the feeding pipe (14) to rotate through the first transmission mechanism, so that the storage shell (10) is driven to rotate, the air pumping mechanism is driven to work, the air pumping mechanism pumps air and enters the folding air bag (6) through an air pipe, the folding air bag (6) is inflated and expanded, the abutting rod (7) drives the discharging structure to move upwards and opens the opening and closing mechanism, and KBH in the storage shell (10) is opened₄Enters the preparation shell (1) through a discharge hole (23) and a discharge structure; when the air pumping mechanism sucks air, the air in the folding air bag (6) is sucked back, the abutting rod (7) drives the discharging structure to move downwards, the opening and closing mechanism is closed, and discharging is stopped; KBH into the preparation housing (1)₄Reacting with phosphoric acid, simultaneously driving a rotating rod (5) to rotate through a second transmission mechanism, driving a stirring plate (3) through the rotating rod (5), sucking out foam generated in the reaction process through a foam sucking mechanism, and sucking out phosphoric acid and KBH₄Reacting the powder to generate diborane gas;

(4) the prepared diborane gas is collected through a gas outlet pipe (16).

10. A process for the preparation of diborane according to claim 9, wherein: the reaction pressure in the preparation vessel did not exceed 667 Pa.

Technical Field

The invention relates to a preparation device and a preparation method of diborane, and belongs to the technical field of chemical industry.

Background

Diborane is the simplest borane, is colorless gas, has special odor and active chemical property, can spontaneously combust in humid air, has high toxicity, and is often used as an organic reaction reducing agent, a fuel additive and a doping agent of a p-type semiconductor material.

Potassium borohydride (KBH) is currently used₄) The process of the device for preparing diborane from phosphoric acid is complicated, the adding speed and the adding amount are not easy to control in the adding process of potassium borohydride powder, and a thicker foam layer is easily generated on the surface to influence the reaction process.

Disclosure of Invention

In view of the above, the present invention is directed to an apparatus and a method for preparing diborane, the apparatus being capable of controlling KBH₄The adding speed and the adding amount of the powder can absorb the foam on the surface in time.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a diborane preparation device comprises a preparation shell, a rotating shaft, a stirring plate, a rotating rod, a feeding pipe, a storage shell, an air outlet pipe, an air pipe, a liquid inlet pipe, a foam absorbing mechanism, a first transmission mechanism, a second transmission mechanism, an opening and closing mechanism, a discharging mechanism and an air pumping mechanism;

the device comprises a preparation shell, a rotating rod, a stirring plate, a foam absorbing mechanism, a strip-shaped cavity, a folding air bag, a supporting rod and a discharging mechanism, wherein the top of the preparation shell is provided with an air outlet pipe and is also connected with a feed pipe in a penetrating and rotating manner; a liquid inlet pipe and a liquid outlet pipe are arranged on one side wall of the preparation shell, a fixed plate which is arranged up and down is fixed on the other side wall of the preparation shell, a rotating shaft is connected to the fixed plate in a penetrating and rotating mode, the upper end of the rotating shaft is connected with the liquid inlet pipe through a first transmission mechanism, the lower end of the rotating shaft is connected with a rotating rod through a second transmission mechanism, a motor is installed at the upper end of the preparation shell, and the first transmission mechanism is connected with; the bottom of the material storage shell is provided with a plurality of discharge ports, cavities are arranged on two sides of the discharge ports, and opening and closing mechanisms are arranged in the cavities; the upper end of the preparation shell is provided with an air pumping mechanism which is matched with the feeding pipe to realize air pumping and air suction; one end of the air pipe is connected with the air pumping mechanism, and the other end of the air pipe penetrates through the bottom of the rotating rod and is connected with the folding air bag; when the air pumping mechanism pumps air, the folding air bag is inflated and expanded, the abutting rod drives the discharging structure to move upwards, the opening and closing mechanism is opened, and the discharging port is communicated with the discharging structure; when the air pumping mechanism inhales air, the air in the folding air bag is sucked back, the abutting rod drives the discharging structure to move upwards, and the opening and closing mechanism is closed.

Furthermore, first drive mechanism includes first gear, second gear and third gear, the output shaft end of motor is fixed with first gear, and the second gear is fixed on the outer wall of inlet pipe and with first gear engagement, the third gear is fixed the upper end of pivot and with first gear engagement.

Further, the diameter of the first gear is larger than that of the third gear.

Furthermore, second drive mechanism includes first belt pulley, second belt pulley and belt, and first belt pulley is fixed the pivot lower extreme, the second belt pulley is fixed the lower extreme of bull stick, the cover is equipped with the belt between first belt pulley and the second belt pulley.

Further, inhale the foam mechanism and be responsible for and the soil pick-up pump including inhaling the foam branch pipe, inhaling the foam, inhale the foam branch pipe and fix on the bull stick outer wall, the outer wall that inhales the foam branch pipe is equipped with a plurality of foam absorption holes, be equipped with in the bull stick with many the connection chamber that inhales the foam branch pipe intercommunication, the bottom of connecting the chamber is rotated and is connected with the foam that inhales that runs through the bull stick and is responsible for, inhales the foam and is responsible for and be connected with the soil pick-up pump.

Further, discharge mechanism is including fixing the slide bar at the bottom both ends of storage casing, the slide bar lower extreme runs through and is equipped with the connecting plate, and the cover is equipped with first spring on the slide bar, and the both ends of first spring are contradicted with storage casing and connecting plate respectively, are equipped with many blanking pipes on the connecting plate, the lower extreme of connecting plate with support the pole and connect.

Furthermore, the opening and closing mechanism comprises a supporting block arranged in the cavity, a wedge block extending into the discharge port is fixed on one side of the supporting block, and the supporting block is elastically connected with the inner wall of the cavity through a second spring.

Further, the air pumping mechanism comprises a cam, a device cavity, an air cavity, a piston and a support column, the cam is fixed on the outer wall of the feeding pipe, the air cavity is arranged on one side of the device cavity, the piston is arranged in the air cavity, the support column extending into the device cavity is fixed on the side wall of the piston, a third spring is sleeved on the support column, the tail end of the support column abuts against the outer wall of the cam through a roller, and the air cavity is connected with the air pipe.

A method of preparing diborane, said method steps comprising:

(1) injecting phosphoric acid into the preparation shell through a liquid inlet pipe, and adding KBH₄Adding the materials into a material storage shell through a feeding pipe;

(2) the feeding pipe is plugged by the sealing cover, and the preparation shell is vacuumized by using a vacuum pump;

(3) the starting motor drives the feeding pipe to rotate through the first transmission mechanism, so that the storage shell is driven to rotate, the air pumping mechanism is driven to work, the air pumping mechanism enters the folding air bag through the air pipe during air pumping, the folding air bag is inflated and expanded, the abutting rod drives the discharging structure to move upwards and open the opening and closing mechanism, and KBH in the storage shell₄Entering the preparation shell through a discharge hole and a discharge structure; when the air pumping mechanism sucks air, the air in the folded air bag is sucked back, the abutting rod drives the discharging structure to move downwards, the opening and closing mechanism is closed, and discharging is stopped; KBH into preparation housing₄Reacting with phosphoric acid, simultaneously driving a rotating rod to rotate through a second transmission mechanism, driving a stirring plate through the rotating rod, sucking out foam generated in the reaction process through a foam sucking mechanism, and mixing phosphoric acid and KBH₄Powder reactionGenerating diborane gas;

(4) and collecting the prepared diborane gas through an air outlet pipe.

Further, the reaction pressure in the preparation vessel does not exceed 667 Pa.

Advantageous effects

The KBH can be controlled by arranging the first transmission mechanism, the discharging mechanism and the air pumping mechanism₄The discharge speed and the discharge amount of the powder. Meanwhile, the transmission of the second transmission mechanism is realized under the driving of the motor, the transmission efficiency is high, and the second transmission mechanism drives the stirring plate to stir so as to improve the preparation speed. Through setting up the foam absorbing mechanism, can in time absorb the thick foam blanket in reaction process.

Drawings

FIG. 1 is a schematic diagram of the apparatus of the present invention;

FIG. 2 is an enlarged view of the structure at A in the apparatus according to the present invention;

FIG. 3 is an enlarged view of the structure at B in the apparatus according to the present invention;

wherein: 1-preparing a shell, 2-rotating shaft, 3-stirring plate, 4-foam absorbing branch pipe, 5-rotating rod, 6-folding air bag, 7-resisting rod, 8-connecting plate, 9-blanking pipe, 10-material storing shell, 11-second gear, 12-first gear, 13-third gear, 14-material feeding pipe, 15-first spring and 16-air outlet pipe, 17-air pipe, 18-second belt pulley, 19-first belt pulley, 20-liquid inlet pipe, 21-foam absorption main pipe, 22-wedge block, 23-discharge port, 24-second spring, 25-motor, 26-cam, 27-prop, 28-air cavity, 29-piston, 30-third spring and 31-device cavity.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

As shown in fig. 1-3, a diborane preparation device comprises a preparation shell 1, a rotating shaft 2, a stirring plate 3, a rotating rod 5, a feeding pipe 14, a storage shell 10, an air outlet pipe 16, an air pipe 17, an air inlet pipe 20, a foam absorbing mechanism, a first transmission mechanism, a second transmission mechanism, an opening and closing mechanism, a discharging mechanism and an air pumping mechanism;

the top of the preparation shell 1 is provided with an air outlet pipe 16 and is also connected with a feeding pipe 14 in a penetrating and rotating manner, a storage shell 10 fixed with the lower end of the feeding pipe 14 is arranged in the preparation shell 1, the bottom of the preparation shell 1 is connected with a rotating rod 5 in a penetrating and rotating manner, the rotating rod 5 is provided with a stirring plate 3 and a foam absorbing mechanism, the upper end of the rotating rod 5 is provided with a strip-shaped cavity, the inner bottom of the strip-shaped cavity is provided with a folding air bag 6, the upper end of the folding air bag 6 is fixed with a supporting rod 7 penetrating through the strip-shaped cavity, and a discharging; a liquid inlet pipe 20 and a discharge pipe are arranged on one side wall of the preparation shell 1, a fixing plate which is arranged up and down is fixed on the other side wall, a rotating shaft 2 is connected to the fixing plate in a penetrating and rotating mode, the upper end of the rotating shaft 2 is connected with a material inlet pipe 14 through a first transmission mechanism, the lower end of the rotating shaft 2 is connected with a rotating rod 5 through a second transmission mechanism, a motor 25 is installed at the upper end of the preparation shell 1, and the first transmission mechanism is connected with the motor 25; the bottom of the material storage shell 10 is provided with a plurality of discharge holes 23, cavities are arranged on two sides of each discharge hole 23, and an opening and closing mechanism is arranged in each cavity; the upper end of the preparation shell 1 is provided with an air pumping mechanism which is matched with the feeding pipe 14 to realize air pumping and air suction; one end of the air pipe 17 is connected with the air pumping mechanism, and the other end penetrates through the bottom of the rotating rod 5 and is connected with the folding air bag 6; when the air pumping mechanism pumps air, the folding air bag 6 is inflated and expanded, the abutting rod 7 drives the discharging structure to move upwards, the opening and closing mechanism is opened, and the discharging opening 23 is communicated with the discharging structure; when the air pumping mechanism inhales, the air in the folding air bag 6 is sucked back, the abutting rod 7 drives the discharging structure to move upwards, and the opening and closing mechanism is closed.

First drive mechanism includes first gear 12, second gear 11 and third gear 13, the output shaft end of motor 25 is fixed with first gear 12, and second gear 11 is fixed on the outer wall of inlet pipe 14 and with first gear 12 meshing, third gear 13 is fixed the upper end of pivot 2 and with first gear 12 meshing.

The diameter of the first gear 12 is much larger than the diameter of the third gear 13.

The second transmission mechanism comprises a first belt pulley 19, a second belt pulley 18 and a belt, the first belt pulley 19 is fixed at the lower end of the rotating shaft 2, the second belt pulley 18 is fixed at the lower end of the rotating rod 5, and the belt is sleeved between the first belt pulley 19 and the second belt pulley 18.

Inhale foam mechanism and be responsible for 21 and sewage suction pump including inhaling foam branch pipe 4, inhaling the foam, inhale foam branch pipe 4 and fix on 5 outer walls of bull stick, the outer wall of inhaling foam branch pipe 4 is equipped with a plurality of foam absorption holes, be equipped with the chamber of being connected with the 4 intercommunications of a plurality of foam absorption branch pipes in the bull stick 5, the bottom of connecting the chamber is rotated and is connected with the foam of inhaling who runs through bull stick 5 and is responsible for 21, and the foam is responsible for 21 and is connected with the sewage suction pump.

Discharge mechanism is including fixing the slide bar at the bottom both ends of storage casing 10, the slide bar lower extreme runs through and is equipped with connecting plate 8, and the cover is equipped with first spring 15 on the slide bar, and first spring 15's both ends are contradicted with storage casing 10 and connecting plate 8 respectively, are equipped with many blanking pipes 9 on the connecting plate 8, the lower extreme of connecting plate 8 with support the pole 7 and connect.

The opening and closing mechanism comprises a supporting block arranged in the cavity, a wedge-shaped block 22 extending into the discharge hole 23 is fixed on one side of the supporting block, and the supporting block is elastically connected with the inner wall of the cavity through a second spring 24.

The air pumping mechanism comprises a cam 26, a device cavity 31, an air cavity 28, a piston 29 and a support column 27, wherein the cam 26 is fixed on the outer wall of the feeding pipe 14, the device cavity 31 is positioned in the wall of the upper end shell of the preparation shell 1, the air cavity 28 is arranged on one side of the device cavity 31, the piston 29 is arranged in the air cavity 28, the support column 27 extending into the device cavity 31 is fixed on the side wall of the piston 29, a third spring 30 is sleeved on the support column 27, the tail end of the support column 27 is supported against the outer wall of the cam 26 through a roller, and the air cavity 28 is connected with the air pipe 17.

A method of preparing diborane, said method steps comprising:

(1) injecting phosphoric acid into the preparation shell 1 through the liquid inlet pipe 20, and adding KBH₄Is added into the storage shell 10 through a feeding pipe 14;

(2) the feeding pipe 14 is plugged by a sealing cover, and the interior of the preparation shell 1 is vacuumized by using a vacuum pump;

(3) the motor 25 is started, the feeding pipe 14 is driven to rotate through the first transmission mechanism, the material storage shell 10 is driven to rotate, the air pumping mechanism is driven to work, when the air pumping mechanism pumps air, the air enters the folding air bag 6 through the air pipe, the folding air bag 6 inflates and expands, the abutting rod 7 drives the discharging structure to move upwards and open and closeKBH in mechanism, storage housing 10₄Enters the preparation shell 1 through the discharge hole 23 and the discharge structure; when the air pumping mechanism sucks air, the air in the folding air bag 6 is sucked back, the abutting rod 7 drives the discharging structure to move downwards, the opening and closing mechanism is closed, and discharging is stopped; KBH into the preparation housing 1₄Reacting with phosphoric acid, simultaneously driving a rotating rod 5 to rotate through a second transmission mechanism, driving a stirring plate 3 through the rotating rod 5, sucking out foams generated in the reaction process through a foam sucking mechanism, and sucking phosphoric acid and KBH₄Reacting the powder to generate diborane gas;

(4) diborane gas produced is collected through outlet 16.

The reaction pressure in the preparation vessel did not exceed 667 Pa.

Example 1

The utility model provides a diborane preparation facilities, including preparing casing 1, the upper end of preparing casing 1 is equipped with outlet duct 16, the lateral wall of preparing casing 1 is equipped with feed liquor pipe 20 and discharging pipe, the upper end of preparing casing 1 runs through to rotate and is connected with inlet pipe 14, be equipped with in the preparation casing 1 with the fixed storage casing 10 of 14 lower extremes of inlet pipe, the bottom of preparing casing 1 runs through to rotate and is connected with bull stick 5, the outer wall of bull stick 5 is equipped with stirring board 3 and inhales foam branch pipe 4, the outer wall of inhaling foam branch pipe 4 is equipped with a plurality of foam holes of inhaling, be equipped with in the bull stick 5 with the chamber of being connected of 4 intercommunications of a plurality of foam branch pipes, the bottom of connecting the chamber is rotated and is connected with the foam of inhaling who runs through bull stick 5 and is responsible for 21, the reaction can produce a large amount of foam, the foam is.

The lateral wall of preparation casing 1 is fixed with two fixed plates, run through rotation on the fixed plate and be connected with pivot 2, preparation casing 1 upper end is equipped with motor 25, the output shaft end of motor 25 is fixed with first gear 12, the outer wall of inlet pipe 14 is fixed with second gear 11 with first gear 12 meshing, the upper end of pivot 2 is fixed with third gear 13 with first gear 12 meshing, starter motor 25 drives first gear 12 and rotates, first gear 12 drives second gear 11 and rotates, first gear 11 drives storage casing 10 through inlet pipe 14 and rotates.

The lower extreme of pivot 2 is fixed with first belt pulley 19, the lower extreme of bull stick 5 is fixed with second belt pulley 18, first belt pulley 19 overlaps between second belt pulley 18 and is equipped with the belt, first gear 12 drives third gear 13 and rotates, drive first belt pulley 19 through pivot 2 and rotate, drive stirring board 3 through bull stick 5 and rotate, thereby improve reaction rate, because the diameter of second gear 12 is far greater than the diameter of third gear 13, in order to make the quick rotation of stirring board 3.

The upper end of the rotating rod 5 is provided with a strip-shaped cavity, the inner bottom of the strip-shaped cavity is provided with a folding air bag 6, and the upper end of the folding air bag 6 is fixed with a support rod 7 penetrating through the strip-shaped cavity. The bottom of the material storage shell 10 is provided with a plurality of discharge ports 23, round cavities are formed in two sides of the plurality of discharge ports 23, abutting blocks are arranged in the round cavities, wedge-shaped blocks 22 extending into the discharge ports 23 are fixed on one sides of the abutting blocks, and the abutting blocks are elastically connected with the inner walls of the round cavities through second springs 24; two slide bars are fixed at the bottom of the material storage shell 10, a connecting plate 8 penetrates through the slide bars, a first spring 15 is sleeved on each slide bar, the lower end of each connecting plate 8 is connected with a supporting rod 7, a plurality of blanking pipes 9 are arranged on each connecting plate 8, the blanking pipes 9 are inserted into a discharge hole 23, and two wedge-shaped blocks 22 are abutted to each other, so that KBH is stored₄The powder is discharged through the discharge port 23 and the blanking pipe 9, falls on the surface of phosphoric acid, the piston 29 moves to the right, and the gas in the folding air bag 6 is sucked back, so that the blanking pipe 9 moves up and down in a reciprocating manner, and the discharge speed and the discharge amount of KBH4 powder can be controlled.

The outer wall of the feeding pipe 14 is provided with a cam 26, the upper end of the preparation shell 1 is provided with a device cavity 31, one side of the device cavity 31 is provided with an air cavity 28, a piston 29 is arranged in the air cavity 28, the side wall of the piston 29 is fixedly provided with a support column 27 extending into the device cavity 31, the support column 27 is sleeved with a third spring 30, the tail end of the support column 27 abuts against the outer wall of the cam 26 through a roller, the air cavity 28 is connected with an air pipe 17, and the air pipe 17 penetrates through the bottom of the rotating rod 5 and is connected with the folding air bag.

A preparation method of diborane comprises the following specific steps:

phosphoric acid is injected into the storage shell 10 through the liquid inlet pipe 20, and newly prepared KBH free of carbonate ions is added into the storage shell 10 through the feed pipe 14₄The powder is sealed by a sealing plug, the starting motor 25 drives the first gear 12 to rotate, and the first gear 12 drives the second gear 11The first gear 11 drives the material storage shell 10 to rotate through the feeding pipe 14, the connecting plate 8 rotates along with the first gear, the feeding pipe 14 drives the cam 26 to rotate along with the first gear, the abutting column 27 always abuts against the outer wall of the cam 26 through the roller under the elastic action of the third spring 30, so that the piston 29 can reciprocate left and right through the prop 27, when the piston 29 moves left, the air in the air chamber 28 is squeezed into the folding air bag 6 through the air pipe 17, the folding air bag 6 inflates and expands, the prop 7 is driven to move upwards, thereby pushing the connecting plate 8 to move upwards, inserting a plurality of blanking pipes 9 into the discharge port 23, pushing the two wedge-shaped blocks 22 open, so that KBH4 powder is discharged through the discharge hole 23 and the blanking pipe 9 and falls on the surface of phosphoric acid, the piston 29 moves to the right, the gas in the folding air bag 6 is sucked back, thereby realizing the reciprocating movement of the up-moving of the blanking pipe 9 and controlling the discharging speed and the discharging amount of KBH4 powder.

First gear 12 drives third gear 13 and rotates, it rotates to drive first belt pulley 19 through pivot 2, it rotates to drive stirring board 3 through bull stick 5, thereby improve reaction rate, because the diameter of second gear 12 is far greater than the diameter of third gear 13, in order to make the quick rotation of stirring board 3, KBH4 powder and phosphoric acid reaction produce diborane gas, discharge through outlet duct 16, the reaction can produce a large amount of foams, will inhale the foam and be responsible for 21 and be connected with the soil pick-up pump this moment, the foam of production inhales through inhaling foam branch pipe 4 and discharges, the effect of the reaction is improved.

In summary, the invention includes but is not limited to the above embodiments, and any equivalent replacement or local modification made under the spirit and principle of the invention should be considered as being within the protection scope of the invention.