Air ultrafine grinding machine and porous carbon material preparation method

Abstract

The application relates to the technical field of crushing equipment, and discloses an air superfine pulverizer and a porous carbon material preparation method, which comprise a rack, a crushing chamber installed on the rack, a feeding system assembly, a feeding pipe and a gas conveying pipe. Corresponding upper exhaust pipes and lower exhaust pipes are fixed on the crushing chamber, and an upslope surface is arranged at the connecting position of the upper exhaust pipes and the crushing chamber. The application can suck out part of the material by increasing the discharge suction force, collect and weigh the part of the material, reflect the material amount basis in the crushing chamber through the collected material amount per unit time, control the feeding amount of the pulverizer according to the material amount, avoid too much or too little material amount in the pulverizer, keep the material amount within a proper threshold value, ensure the crushing efficiency of the pulverizer, and accelerate the discharge of the material in the crushing chamber through the driving assembly and the valve assembly when the material amount in the crushing chamber is too large. Compared with the feeding amount adjustment mode, the application is more efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crushing equipment, in particular to an air superfine pulverizer and a porous carbon material preparation method. BACKGROUND

[0002] The air flow type pulverizer is a common material crushing equipment, which is provided with a crushing chamber, the feeding end of the crushing chamber is connected with a material feeding system, the discharging end of the crushing chamber is connected with a cyclone separator, a dust collector and an induced draft fan, compressed air is dried and then injected into the crushing chamber at high speed through the Laval nozzle of the side wall during operation, the material is crushed through friction and shearing in the crushing chamber, and the fine particles with small force are discharged through the discharging end, and the coarse particles remain in the crushing chamber for further crushing.

[0003] Such a pulverizer has certain deficiencies in actual use: the material quantity in the crushing chamber of the pulverizer is an important factor for ensuring the grinding efficiency, when the material quantity is small, the collision and contact between the materials are less, so that the grinding efficiency is low, but when the material quantity is large, the risk of blocking the material in the crushing chamber is increased, the material quantity in the crushing chamber cannot be visually observed in actual application, and the material quantity cannot be accurately reflected by weight under the action of air flow, so that it is difficult to measure, and only the feeding quantity can be passively controlled when the blocking occurs, which affects the working efficiency of the pulverizer and the stability of the system, and also reduces the service life of the pulverizer. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an air superfine pulverizer and a porous carbon material preparation method, which has the advantages of convenient detection of material quantity and adaptive regulation, improves the crushing efficiency, and solves the problems that the existing air flow type pulverizer cannot accurately monitor the material quantity in the crushing chamber, and thus it is not easy to regulate the feeding quantity, which increases the probability of blocking the crushing chamber or reduces the crushing efficiency.

[0005] To solve the above technical problems, the present application provides the following technical scheme: an air superfine pulverizer, comprising a rack, a crushing chamber mounted on the rack, a feeding system assembly, a feeding pipe and a gas conveying pipe, a position corresponding upper exhaust pipe and lower exhaust pipe are fixed on the crushing chamber, an upper slope surface is arranged at the connecting position of the upper exhaust pipe and the crushing chamber, a collecting pipe is mounted in the lower exhaust pipe, and a lower slope surface is arranged at the top end of the collecting pipe;

[0006] A driving assembly is mounted on the side wall of the lower exhaust pipe, and the driving assembly is used to drive the vertical movement of the collecting pipe;

[0007] A valve assembly is mounted at the top end of the collecting pipe, and the valve assembly is used to control the opening and closing of the top end of the collecting pipe;

[0008] The bottom end of the lower exhaust pipe is provided with a collecting cylinder, and a weighing assembly is arranged in the collecting cylinder and used for receiving and weighing the materials falling along the lower exhaust pipe.

[0009] When the crushing chamber is in operation, the airflow is discharged through the upper exhaust pipe, the valve assembly and the driving assembly are in operation, the valve assembly forces the top end of the lower exhaust pipe to open, and the driving assembly drives the collecting cylinder to move upwards, so that the downward slope of the top end of the collecting cylinder is close to the upward slope, so as to improve the suction force of the end of the upper exhaust pipe, the materials in the crushing chamber are sucked into the upper exhaust pipe and then fall along the lower exhaust pipe, and the weighing assembly is in operation to receive and weigh the materials.

[0010] Preferably, the bottom wall of the collecting cylinder is provided with a threaded hole and a guide hole, the driving assembly comprises a driving motor, a vertical screw rod and a vertical guide rod, the driving motor is fixed to the outer wall of the lower exhaust pipe, the output shaft of the driving motor penetrates into the interior of the exhaust pipe and is fixed with a first bevel gear, the vertical screw rod is installed on the inner side wall of the lower exhaust pipe through a first bearing seat, the top end of the vertical screw rod extends into the threaded hole and is threadedly connected with the threaded hole, the bottom end of the vertical screw rod is fixed with a second bevel gear, the second bevel gear is engaged with the first bevel gear, the top end of the vertical guide rod is movably inserted into the guide hole, the bottom end of the vertical guide rod is fixed with a connecting block, and the connecting block is fixedly connected with the inner wall of the lower exhaust pipe.

[0011] Preferably, the bottom wall of the collecting cylinder is further provided with an assembly hole, the valve assembly comprises a valve plate arranged in the interior of the collecting cylinder and a transmission assembly arranged in the assembly hole, the valve plate is rotatably connected with the inner wall of the collecting cylinder through a valve shaft, and the transmission assembly drives the valve plate to rotate by using the movement of the collecting cylinder itself.

[0012] Preferably, the transmission assembly comprises an incomplete rack, a horizontal shaft, an upper synchronous wheel and a lower synchronous wheel, the horizontal shaft is rotatably connected with the inner wall of the assembly hole, a transmission gear is fixed to the horizontal shaft, the top end of the incomplete rack extends into the assembly hole and is engaged with the transmission gear, the incomplete rack is further vertically slidably connected with the inner wall of the assembly hole, the bottom end of the incomplete rack extends to the outside of the assembly hole and is fixed with a base block, the base block is fixedly connected with the inner wall of the lower exhaust pipe, the lower synchronous wheel is fixed to the horizontal shaft, the upper synchronous wheel is fixed to the valve shaft, and a synchronous belt is connected between the upper synchronous wheel and the lower synchronous wheel.

[0013] Preferably, the weighing assembly comprises a horizontal bracket arranged in the interior of the collecting cylinder, a pressure sensor is fixed to the top of the horizontal bracket, a cross support is fixed to the pressure bearing surface of the pressure sensor, a tray is arranged above the cross support, the tray is arranged directly below the collecting cylinder, the tray is used for collecting the materials falling along the collecting cylinder, and a spring is fixedly connected between the tray and the cross support.

[0014] Preferably, the horizontal bracket is fixed with base shafts on both sides, the base shafts are rotationally connected with the inner wall of the collecting cylinder, the outer wall of the collecting cylinder is fixedly connected with an adjusting motor, the output shaft of the adjusting motor is fixedly connected with the base shaft, and the adjusting motor is used to drive the tray to overturn, so as to clean the materials in the tray.

[0015] Preferably, the horizontal bracket is further provided with a vibration assembly, and the vibration assembly is used to shake off the materials adhered to the tray when the tray is overturned.

[0016] Preferably, the vibration assembly comprises a transmission motor, a sleeve and a transmission shaft, the sleeve is rotationally connected with the base shaft, a driven gear and a cam are fixed on the sleeve, the cam is matched with the position of the tray, the transmission motor is fixed at the bottom of the horizontal bracket, a third bevel gear is fixedly connected with the output shaft of the transmission motor, the transmission shaft is installed at the bottom of the horizontal bracket through a second bearing seat, a fourth bevel gear is fixed at one end of the transmission shaft, the fourth bevel gear is engaged with the third bevel gear, a driving gear is fixedly connected with the other end of the transmission shaft, and the driving gear is engaged with the driven gear.

[0017] Preferably, the bottom end of the collecting cylinder is provided with a funnel shape, a screw conveyor is fixedly installed at the bottom end of the collecting cylinder, a Venturi tube is fixed at the end of the screw conveyor, a front branch pipe is fixed on the feeding pipe, the front branch pipe is fixedly connected with the air inlet end of the Venturi tube, the air outlet end of the Venturi tube is fixedly connected with a rear branch pipe, one end of the rear branch pipe is fixedly connected with the feeding pipe, and the connecting point of the rear branch pipe and the feeding pipe is arranged on the side close to the crushing chamber of the connecting point of the front branch pipe and the feeding pipe.

[0018] The application further discloses a porous carbon material preparation method.

[0019] Compared with the prior art, the air superfine grinding machine and the porous carbon material preparation method have the following beneficial effects:

[0020] 1. The air superfine grinding machine and the porous carbon material preparation method can avoid excessive or insufficient amount of materials in the grinding machine, so that the amount of materials is kept within a proper threshold, the grinding efficiency of the grinding machine is ensured, and the driving assembly and the valve assembly can accelerate the discharge of the materials in the crushing chamber when the amount of materials in the crushing chamber is too large, so that the adjustment of the feeding amount is more efficient.

[0021] 2. The air superfine grinding machine and the porous carbon material preparation method, by setting the adjusting motor and the vibration assembly, the material in the tray can be poured out after each weighing is finished by starting the adjusting motor, the material is avoided to stay in the tray and influence the precision of next weighing, and the inverted tray is vibrated by the vibration assembly, so that the material is cleaned more cleanly.

[0022] 3. The air superfine grinding machine and the porous carbon material preparation method, by setting the screw conveyor, the front branch pipe, the Venturi tube and the rear branch pipe, the material collected in the collecting cylinder can be sucked into the crushing chamber again, the recycling and regrinding are facilitated, and the automation degree is high. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure diagram of the air superfine grinding machine of the present application Figure 1 ;

[0024] Figure 2 It is a three-dimensional structure diagram of the air superfine grinding machine of the present application Figure 2 ;

[0025] Figure 3 It is a connecting structure diagram of the crushing chamber of the present application

[0026] Figure 4 It is a sectional view of the crushing chamber of the present application

[0027] Figure 5 It is a sectional view of the driving assembly working state of the present application

[0028] Figure 6 It is an enlarged view of A part of the present application Figure 5 ;

[0029] Figure 7 It is an enlarged view of B part of the present application Figure 5 ;

[0030] Figure 8 It is a partial sectional view of the collecting pipe of the present application

[0031] Figure 9 It is an enlarged view of C part of the present application Figure 8 ;

[0032] Figure 10 It is a sectional view of the collecting cylinder of the present application

[0033] Figure 11 It is a working schematic diagram of the vibration assembly of the present application

[0034] Figure 12 It is an enlarged view of D part of the present application Figure 11 .

[0035] In the figure: 1, rack; 2, crushing chamber; 21, upper exhaust pipe; 211, upper slope; 22, lower exhaust pipe; 3, upper feeding system assembly; 4, upper feeding pipe; 5, gas conveying pipe; 6, collecting pipe; 61, lower slope; 62, assembly hole; 7, driving assembly; 71, driving motor; 72, vertical screw; 73, vertical guide rod; 74, first bevel gear; 75, first bearing seat; 76, second bevel gear; 77, connecting block; 8, valve assembly; 81, valve plate; 82, transmission assembly; 821, incomplete rack; 822, horizontal shaft; 823, upper synchronous wheel; 824, lower synchronous wheel; 825, transmission gear; 826, base block; 827, synchronous belt; 83, valve shaft; 9, weighing assembly; 91, horizontal bracket; 92, pressure sensor; 93, cross support; 94, tray; 95, spring; 96, base shaft; 97, adjusting motor; 98, vibration assembly; 981, transmission motor; 982, sleeve; 983, transmission shaft; 984, driven gear; 985, cam; 986, third bevel gear; 987, driving gear; 988, fourth bevel gear; 989, second bearing seat; 10, collecting cylinder; 11, screw conveyor; 12, Venturi tube; 13, front branch pipe; 14, rear branch pipe. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] As introduced in the background, the deficiencies in the prior art exist, in order to solve the above technical problems, the present application provides an air superfine grinding machine and a porous carbon material preparation method.

[0038] Embodiment one: please refer to Figures 1-7 An air superfine grinding machine, comprising a rack 1, a crushing chamber 2 installed on the rack 1, an upper feeding system assembly 3, an upper feeding pipe 4, and a gas conveying pipe 5, wherein the crushing chamber 2 is fixed with a position corresponding upper exhaust pipe 21 and lower exhaust pipe 22, the upper exhaust pipe 21 is provided with an upper slope 211 at the connection with the crushing chamber 2, the lower exhaust pipe 22 is installed with a collecting pipe 6, and the top end of the collecting pipe 6 is provided with a lower slope 61.

[0039] The side wall of the lower exhaust pipe 22 is installed with a driving assembly 7, and the driving assembly 7 is used to drive the vertical movement of the collecting pipe 6.

[0040] The top end of the collecting pipe 6 is installed with a valve assembly 8, and the valve assembly 8 is used to control the opening and closing of the top end of the collecting pipe 6.

[0041] The bottom end of the lower exhaust pipe 22 is provided with a collecting cylinder 10, and a weighing assembly 9 is arranged in the collecting cylinder 10, which is used to receive and weigh the materials falling along the lower exhaust pipe 22;

[0042] When the crushing chamber 2 is in operation, the airflow is discharged through the upper exhaust pipe 21, the valve assembly 8 and the driving assembly 7 are operated, the valve assembly 8 forces the top end of the lower exhaust pipe 22 to open, the driving assembly 7 drives the collecting pipe 6 to move upward, and then the downward slope surface 61 at the top end of the collecting pipe 6 is close to the upward slope surface 211, so as to improve the suction force at the end of the upper exhaust pipe 21, the materials in the crushing chamber 2 are sucked into the upper exhaust pipe 21 and then fall along the lower exhaust pipe 22, and the weighing assembly 9 is operated to receive and weigh the materials;

[0043] The upper feeding system assembly 3, the crushing chamber 2, the feeding pipe 4 and the gas conveying pipe 5 are all prior art structures, the upper feeding system assembly 3 is used to store and output raw materials, the feeding pipe 4 is used to input the raw materials into the crushing chamber 2, the feeding pipe 4 and the gas conveying pipe 5 are connected with the crushing chamber 2, the feeding pipe 4 and the gas conveying pipe 5 are connected with the air compressor, and high-speed airflow is arranged inside, the upper exhaust pipe 21 is used to collect the materials after crushing and meeting the particle size requirements, and the outer diameter of the collecting pipe 6 matches the inner diameter of the lower exhaust pipe 22;

[0044] In use, the crushing chamber is in operation and crushing the internal material, the material meeting the particle size is discharged through the upper exhaust pipe 21, and during the crushing work, the material amount in the crushing chamber 2 is detected every certain period of time, and the specific detection work is as follows: the driving assembly 7 and the valve assembly 8 are started, and when the valve assembly 8 is in operation, the originally closed top end of the collecting pipe 6 is opened, and when the driving assembly 7 is in operation, the collecting pipe 6 is first driven to move upward vertically, and finally the downward slope 61 at the top end of the collecting pipe 6 is close to the upward slope 211, and the discharge gap is formed between the upward slope 211 and the downward slope 61, the discharge gap is smaller than the previous exhaust cross section of the upper exhaust pipe 21, so that the wind speed is increased, the suction force is also increased, and then the material in the crushing chamber 2 is sucked into the upper exhaust pipe, the suction force in the upper exhaust pipe is small, so that the material entering the upper exhaust pipe falls under the action of gravity, then passes through the collecting pipe 6, and finally falls downward along the inner cavity of the lower exhaust pipe, after a period of time, the driving assembly 7 and the valve assembly 8 are started again, the valve assembly 8 controls the top end of the collecting pipe 6 to be closed, and the driving assembly 7 drives the collecting pipe 6 to move downward to reset, and then the weighing assembly 9 is started, the weighing assembly 9 receives the previously fallen material and weighs the material, so as to determine the collected material under the same suction force per unit time, when the weight of the material is large, it can reflect that the material base in the crushing chamber 2 is large, when the weight is small, it can reflect that the material base in the crushing chamber 2 is small, when the weight is within the specified range, it indicates that the material base in the crushing chamber 2 is moderate, which can achieve the best stirring efficiency, when the material amount in the crushing chamber 2 is too small, the feeding amount can be increased, and when the material amount in the crushing chamber 2 is too large, the driving assembly 7 and the valve assembly 8 can be started to suck out part of the material in the crushing chamber 2, so as to quickly reduce the base, and the feeding amount can also be adjusted to achieve control.

[0045] By installing the collecting pipe 6, the driving assembly 7, the valve assembly 8 and the weighing assembly 9 on the crushing chamber 2, the material amount in the crushing chamber 2 is detected at regular intervals during the crushing process, and during the detection, part of the material is sucked out by increasing the discharge suction, and the part of the material is collected and weighed, the material amount collected per unit time reflects the material amount base in the crushing chamber 2, and finally the material amount is used to control the feeding amount of the mill, which can avoid that the material amount in the mill is too much or too little, so that the material amount is kept within a suitable threshold, which ensures the crushing efficiency of the mill, and when the material amount in the crushing chamber 2 is too large, the driving assembly 7 and the valve assembly 8 can also accelerate the discharge of the material in the crushing chamber 2, which is more efficient than adjusting the feeding amount.

[0046] Example two: refer to Figures 4-9Unlike the above-mentioned embodiments, the bottom wall of the collecting pipe 6 is provided with a threaded hole and a guide hole, and the driving assembly 7 comprises a driving motor 71, a vertical screw rod 72 and a vertical guide rod 73. The driving motor 71 is fixed to the outer wall of the lower exhaust pipe 22, the output shaft of the driving motor 71 penetrates into the interior of the exhaust pipe and is fixed with a first bevel gear 74, the vertical screw rod 72 is installed on the inner side wall of the lower exhaust pipe 22 through a first bearing seat 75, the top end of the vertical screw rod 72 extends into the threaded hole and is threadedly connected with the threaded hole, the bottom end of the vertical screw rod 72 is fixed with a second bevel gear 76, the second bevel gear 76 is engaged with the first bevel gear 74, and the top end of the vertical guide rod 73 is movably inserted into the guide hole, and the bottom end of the vertical guide rod 73 is fixed with a connecting block 77 which is fixedly connected with the inner wall of the lower exhaust pipe 22.

[0047] The guide hole, the vertical guide rod 73 and the connecting block 77 are all arranged in two groups and in annular array distribution, and the threaded hole, the vertical screw rod 72, the vertical guide rod 73 and the guide hole are all vertically arranged. In use, the driving motor 71 is started, and after the driving motor 71 operates, the first bevel gear 74 is driven to rotate, the second bevel gear 76 is driven to rotate when the first bevel gear 74 rotates, the vertical screw rod 72 is driven to rotate when the second bevel gear 76 rotates, and the collecting pipe 6 is driven to move vertically upward when the vertical screw rod 72 rotates. When the second bevel gear 76 is driven to rotate in the reverse direction by the driving motor 71, the collecting pipe 6 is driven to move vertically downward. After the collecting pipe 6 moves vertically upward, the downhill surface 61 at the top end of the collecting pipe 6 moves close to the uphill surface 211, at this time, the material can only be discharged through the gap between the uphill surface 211 and the downhill surface 61. Since the wind speed of the gap is faster than before and the wind pressure is larger, the material of different particle sizes in the crushing chamber 2 can all be sucked into the upper exhaust pipe;

[0048] By arranging the driving motor 71, the collecting pipe 6 can be driven to move vertically after the driving motor 71 operates, which is beneficial to accurately adjusting the height of the collecting pipe 6 and then adjusting the gap between the downhill surface 61 and the uphill surface 211, so that the suction force at the bottom end of the upper exhaust pipe is increased, and the material inside the crushing chamber 2 is conveniently collected.

[0049] Embodiment three, refer to Figure 7 Figure 9Unlike the above embodiments, the bottom wall of the collecting pipe 6 is also provided with an assembly hole 62, the valve assembly 8 includes a valve plate 81 installed inside the collecting pipe 6 and a transmission assembly 82 installed in the assembly hole 62, the valve plate 81 is rotationally connected with the inner wall of the collecting pipe 6 through a valve shaft 83, the transmission assembly 82 drives the valve plate 81 to rotate by using the movement of the collecting pipe 6 itself, the transmission assembly 82 includes an incomplete rack 821, a horizontal shaft 822, an upper synchronous wheel 823 and a lower synchronous wheel 824, the horizontal shaft 822 is rotationally connected with the inner wall of the assembly hole 62, a transmission gear 825 is fixed on the horizontal shaft 822, the top end of the incomplete rack 821 extends into the assembly hole 62 and is engaged with the transmission gear 825, the incomplete rack 821 is also vertically slidably connected with the inner wall of the assembly hole 62, the bottom end of the incomplete rack 821 extends outside the assembly hole 62 and is fixed with a base block 826, the base block 826 is fixedly connected with the inner wall of the lower exhaust pipe 22, the lower synchronous wheel 824 is fixed on the horizontal shaft 822, the upper synchronous wheel 823 is fixed on the valve shaft 83, a synchronous belt 827 is connected between the upper synchronous wheel 823 and the lower synchronous wheel 824;

[0050] Wherein, the valve plate 81 is arranged in the top end of the collecting pipe 6, in use, when the collecting pipe 6 moves vertically upward, the transmission gear 825 and the rack produce relative displacement, at this time the transmission rack rolls along the rack, in turn drives the horizontal shaft 822 to rotate, when the horizontal shaft 822 rotates, drives the lower synchronous wheel 824 to rotate, when the lower synchronous wheel 824 rotates, drives the upper synchronous wheel 823 to rotate through the synchronous belt 827, when the upper synchronous wheel 823 rotates, drives the valve shaft 83 to rotate, when the valve shaft 83 rotates, drives the valve plate 81 to overturn, finally makes the valve plate 81 rotate to the vertical state, opens the top end of the collecting pipe 6, while when the collecting pipe 6 moves vertically downward, the transmission gear 825 rotates reversely, rotates the valve plate 81 to the horizontal state, closes the top end of the collecting pipe 6;

[0051] By setting the valve assembly 8 as the transmission assembly 82 and the valve plate 81, when the collecting pipe 6 moves vertically, the valve plate 81 can be driven to rotate by the transmission assembly 82, so as to realize opening and closing, the valve assembly 8 does not occupy the space outside the top end of the collecting pipe 6, does not affect the vertical movement of the collecting pipe 6, and does not need additional power.

[0052] Embodiment four, refer to Figure 10 and Figure 11 Unlike the above embodiments, the weighing assembly 9 includes a horizontal bracket 91 installed inside the collecting cylinder 10, a pressure sensor 92 is fixed on the top of the horizontal bracket 91, a cross bracket 93 is fixed on the pressure bearing surface of the pressure sensor 92, a tray 94 is arranged above the cross bracket 93, the tray 94 is arranged directly below the collecting pipe 6, the tray 94 is used to collect the materials falling along the collecting pipe 6, a spring 95 is fixedly connected between the tray 94 and the cross bracket 93.

[0053] Wherein, the tray 94 is located directly below the collection tube 6, the diameter of the tray 94 is greater than the diameter of the collection tube 6, the material in the collection tube 6 falls directly on the tray 94, the pressure sensor 92 monitors the weight change to realize the weighing, by setting the weighing assembly 9 as the tray 94 and the pressure sensor 92 installed inside the collection cylinder 10, the tray 94 receives the material and then monitors the weight through the pressure sensor 92, which facilitates the rapid weighing of the material.

[0054] Embodiment five, refer to Figures 10-12 Different from the above embodiments, the horizontal bracket 91 is fixed with a base shaft 96 on both sides, the base shaft 96 is rotatably connected with the inner wall of the collection cylinder 10, the outer wall of the collection cylinder 10 is fixedly connected with an adjusting motor 97, the output shaft of the adjusting motor 97 is fixedly connected with the base shaft 96, the adjusting motor 97 is used to drive the tray 94 to overturn, so as to clean the material in the tray 94, the horizontal bracket 91 is also provided with a vibration assembly 98, the vibration assembly 98 is used to vibrate the material adhered on the tray 94 when the tray 94 is overturned, the vibration assembly 98 includes a transmission motor 981, a sleeve 982 and a transmission shaft 983, the sleeve 982 is rotatably connected with the base shaft 96, the sleeve 982 is fixed with a driven gear 984 and a cam 985, the cam 985 is matched with the position of the tray 94, the transmission motor 981 is fixed at the bottom of the horizontal bracket 91, the output shaft of the transmission motor 981 is fixedly connected with a third bevel gear 986, the transmission shaft 983 is installed at the bottom of the horizontal bracket 91 through a second bearing seat 989, one end of the transmission shaft 983 is fixedly connected with a fourth bevel gear 988, the fourth bevel gear 988 is engaged with the third bevel gear 986, the other end of the transmission shaft 983 is fixedly connected with a driving gear 987, the driving gear 987 is engaged with the driven gear 984.

[0055] Wherein, the sleeve 982 and the transmission shaft 983 are limited to two groups, and the third bevel gear 986 is symmetrically distributed on both sides, two second bearing seats 989 are preferentially arranged on each transmission shaft 983;

[0056] In use, after each weighing of the weighing assembly 9 ends, the material weighed last needs to be poured out to avoid affecting subsequent weighing. The specific operation is as follows. The adjusting motor 97 is started, the adjusting motor 97 drives the base shaft 96 to rotate when it operates, the base shaft 96 drives the horizontal bracket 91 to overturn 180 degrees when it rotates, and then the tray 94 is overturned 180 degrees, so that the material in the tray 94 is poured out and falls to the bottom of the collecting cylinder 10. Then, the transmission motor 981 is started, the transmission motor 981 drives the third bevel gear 986 to rotate when it operates, the third bevel gear 986 drives the fourth bevel gear 988 to rotate when it rotates, the fourth bevel gear 988 drives the transmission shaft 983 to rotate when it rotates, the transmission shaft 983 drives the driving gear 987 to rotate when it rotates, the driving gear 987 drives the driven gear 984 to rotate when it rotates, the driven gear 984 drives the sleeve 982 to rotate when it rotates, and the cam 985 on the sleeve 982 also rotates. The cam 985 intermittently pushes the inverted tray 94 during rotation, and the tray 94 is reset under the action of the spring 95, thereby realizing a high-frequency vibration effect. The vibration of the tray 94 causes the material adhered to the inner wall of the tray 94 to fall off;

[0057] By arranging the adjusting motor 97 and the vibration assembly 98, the material in the tray 94 can be poured out by starting the adjusting motor 97 after each weighing ends, so as to avoid the material remaining in the tray 94 affecting the accuracy of subsequent weighing. In addition, the vibration assembly 98 also vibrates the inverted tray 94, so that the material is cleaned more thoroughly.

[0058] In the sixth embodiment, refer to Figure 3 Different from the above embodiments, the bottom end of the collecting cylinder 10 is arranged in a funnel shape, the bottom end of the collecting cylinder 10 is fixedly installed with a screw conveyor 11, the end of the screw conveyor 11 is fixedly installed with a Venturi tube 12, the upper feeding pipe 4 is fixedly installed with a front branch pipe 13, the front branch pipe 13 is fixedly connected with the air inlet end of the Venturi tube 12, the air outlet end of the Venturi tube 12 is fixedly installed with a rear branch pipe 14, one end of the rear branch pipe 14 is fixedly connected with the upper feeding pipe 4, and the connection point of the rear branch pipe 14 and the upper feeding pipe 4 is arranged on the side close to the crushing chamber 2 of the connection point of the front branch pipe 13 and the upper feeding pipe 4.

[0059] The first valve is arranged at one end of the front branch pipe 13 close to the connection point of the front branch pipe 13 and the upper feeding pipe 4, the second valve is arranged at one end of the upper feeding pipe 4 close to the connection point of the front branch pipe 13 and the upper feeding pipe 4, the third valve is arranged at one end of the rear branch pipe 14 close to the connection point of the rear branch pipe 14 and the upper feeding pipe 4, and the fourth valve is arranged at one end of the upper feeding pipe 4 close to the connection point of the rear branch pipe 14 and the upper feeding pipe 4. In the initial state, the first valve and the third valve are closed, and the second valve and the fourth valve are opened.

[0060] In use, when a certain material is collected in the collecting cylinder 10, the screw conveyor 11 is started to discharge the material, the first valve and the third valve are opened, and the second valve and the fourth valve are closed, at this time, the airflow in the feeding pipe 4 changes the flow direction, first sequentially passes through the front branch pipe 13, the Venturi tube 12 and the rear branch pipe 14, and finally backflows into the feeding pipe 4, when the airflow passes through the Venturi tube 12, suction is generated, the material output by the screw conveyor 11 is sucked out, and then is discharged into the crushing chamber 2 again along with the airflow;

[0061] By setting the screw conveyor 11, the front branch pipe 13, the Venturi tube 12 and the rear branch pipe 14, the material collected in the collecting cylinder 10 can be sucked into the crushing chamber 2 again, which facilitates recycling and regrinding, and the degree of automation is high.

[0062] Embodiment six, a porous carbon material preparation method, comprising: first, the raw material starch, powder carbon, cellulose is formed by molding drying process section, then through high temperature treatment, water vapor activation, preparation of biomass hard carbon, porous carbon material, then the biomass hard carbon, porous carbon material is washed, dried, through the air superfine grinding mill in one of the above embodiments grinding, form the final product porous carbon material.

[0063] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. An air-based ultrafine grinding mill, comprising a frame, a grinding chamber mounted on the frame, a feeding system assembly, a feeding pipe, and an air conveying pipe, characterized in that: The grinding chamber is fixed with an upper exhaust pipe and a lower exhaust pipe at corresponding positions. The upper exhaust pipe is provided with an upper slope at the connection with the grinding chamber. A collection pipe is installed inside the lower exhaust pipe, and a lower slope is provided at the top of the collection pipe. A drive assembly is installed on the side wall of the lower exhaust pipe, and the drive assembly is used to drive the collection pipe to move vertically; A valve assembly is installed at the top of the collection pipe, and the valve assembly is used to control the opening and closing of the top of the collection pipe. A collection cylinder is installed at the bottom of the lower exhaust pipe, and a weighing component is installed inside the collection cylinder. The weighing component is used to receive and weigh the material falling along the lower exhaust pipe. When the crushing chamber is in operation, the airflow is discharged through the upper exhaust pipe. The valve assembly and drive assembly operate, and the valve assembly forces the top of the lower exhaust pipe to open. The drive assembly drives the collection pipe to move upward, so that the lower slope of the top of the collection pipe is close to the upper slope. A discharge gap is formed between the upper and lower slopes. The discharge gap is smaller than the previous exhaust cross section of the upper exhaust pipe, thereby increasing the suction force at the end of the upper exhaust pipe. The material in the crushing chamber is sucked into the upper exhaust pipe and then falls down along the lower exhaust pipe. The weighing assembly operates to receive and weigh the material.

2. The air-based ultrafine grinding mill according to claim 1, characterized in that: The bottom wall of the collection pipe is provided with a threaded hole and a guide hole. The drive assembly includes a drive motor, a vertical screw, and a vertical guide rod. The drive motor is fixed to the outer wall of the lower exhaust pipe. The output shaft of the drive motor passes through the interior of the exhaust pipe and is fixed with a first bevel gear. The vertical screw is mounted on the inner wall of the lower exhaust pipe through a first bearing seat. The top end of the vertical screw extends into the threaded hole and is threadedly connected to the threaded hole. A second bevel gear is fixed to the bottom end of the vertical screw. The second bevel gear meshes with the first bevel gear. The top end of the vertical guide rod is movably inserted into the guide hole. A connecting block is fixed to the bottom end of the vertical guide rod. The connecting block is fixedly connected to the inner wall of the lower exhaust pipe.

3. The air-based ultrafine grinding mill according to claim 1, characterized in that: The bottom wall of the collecting pipe is also provided with an assembly hole. The valve assembly includes a valve plate installed inside the collecting pipe and a transmission assembly installed in the assembly hole. The valve plate is rotatably connected to the inner wall of the collecting pipe through a valve shaft. The transmission assembly drives the valve plate to rotate by the movement of the collecting pipe itself.

4. An air-based ultrafine grinding mill according to claim 3, characterized in that: The transmission assembly includes an incomplete rack, a horizontal shaft, an upper synchronous pulley, and a lower synchronous pulley. The horizontal shaft is rotatably connected to the inner wall of the mounting hole, and a transmission gear is fixed on the horizontal shaft. The top end of the incomplete rack extends into the mounting hole and meshes with the transmission gear. The incomplete rack is also vertically slidably connected to the inner wall of the mounting hole. The bottom end of the incomplete rack extends to the outside of the mounting hole and is fixed to a base block. The base block is fixedly connected to the inner wall of the lower exhaust pipe. The lower synchronous pulley is fixed on the horizontal shaft, and the upper synchronous pulley is fixed on the valve shaft. A synchronous belt connects the upper synchronous pulley and the lower synchronous pulley.

5. An air-based ultrafine grinding mill according to claim 1, characterized in that: The weighing assembly includes a horizontal bracket installed inside the collection cylinder. A pressure sensor is fixed to the top of the horizontal bracket. A cross bracket is fixed to the pressure-bearing surface of the pressure sensor. A tray is provided above the cross bracket and is positioned directly below the collection pipe. The tray is used to collect materials falling along the collection pipe. A spring is fixedly connected between the tray and the cross bracket.

6. An air-based ultrafine grinding mill according to claim 5, characterized in that: Both sides of the horizontal bracket are fixed with base shafts, which are rotatably connected to the inner wall of the collection cylinder. An adjustment motor is fixedly connected to the outer wall of the collection cylinder, and the output shaft of the adjustment motor is fixedly connected to the base shaft. The adjustment motor is used to drive the tray to flip, thereby cleaning the material in the tray.

7. An air-based ultrafine grinding mill according to claim 6, characterized in that: The horizontal bracket is also equipped with a vibration assembly, which is used to shake off the material adhering to the tray when the tray is flipped.

8. An air-based ultrafine grinding mill according to claim 7, characterized in that: The vibration assembly includes a drive motor, a sleeve, and a drive shaft. The sleeve is rotatably connected to the base shaft. A driven gear and a cam are fixed on the sleeve. The cam is matched with the position of the tray. The drive motor is fixed to the bottom of the horizontal bracket. A third bevel gear is fixedly connected to the output shaft of the drive motor. The drive shaft is mounted on the bottom of the horizontal bracket through a second bearing seat. A fourth bevel gear is fixed to one end of the drive shaft and meshes with the third bevel gear. A drive gear is fixedly connected to the other end of the drive shaft and meshes with the driven gear.

9. An air-based ultrafine grinding mill according to claim 8, characterized in that: The bottom of the collecting cylinder is provided with a funnel shape, and a screw conveyor is fixedly installed at the bottom of the collecting cylinder. A venturi tube is fixed at the end of the screw conveyor. A front branch pipe is fixed on the feeding pipe. The front branch pipe is fixedly connected to the air inlet end of the venturi tube. A rear branch pipe is fixed to the exhaust end of the venturi tube. One end of the rear branch pipe is fixedly connected to the feeding pipe. The connection point between the rear branch pipe and the feeding pipe is located on the side of the connection point between the front branch pipe and the feeding pipe near the crushing chamber.

10. A method for preparing porous carbon materials, characterized in that: The method for preparing this porous carbon material uses an air-based ultrafine grinding mill as described in any one of claims 1-9.

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