CN111152987A

CN111152987A - Lithium hydroxide powder packaging system

Info

Publication number: CN111152987A
Application number: CN202010052228.0A
Authority: CN
Inventors: 崔俊勇; 沈克涛; 何建民
Original assignee: Qingdao Lihui Technology Co ltd
Current assignee: Qingdao Lihui Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-05-15

Abstract

The invention discloses a lithium hydroxide powder packaging system which comprises a packaging machine, a bag holding travelling mechanism, a bag sewing machine, a bag pushing machine, a metal detection machine, a weight rechecking machine, a shaping machine, a code spraying conveyor, a stacking mechanism and a control system which are sequentially connected along the conveying direction of a conveying line, wherein the packaging machine comprises a rack, a bin, a single-point weighing sensor, a bag clamping mechanism and a bag supporting mechanism, the bin is fixed on the rack, one end of the single-point weighing sensor is fixed on the rack, the other end of the single-point weighing sensor is fixedly connected with the bag clamping mechanism, and the bag clamping mechanism is fixedly connected with the bag supporting mechanism. The lithium hydroxide powder packaging system provided by the invention realizes intelligent automatic packaging of lithium hydroxide, improves packaging efficiency, realizes accurate weighing of materials, fully recovers the materials, reduces cost, and prevents scattered lithium hydroxide dust from damaging environment and workers.

Description

Lithium hydroxide powder packaging system

Technical Field

The invention relates to the technical field of material packaging equipment, in particular to a lithium hydroxide powder packaging system.

Background

Lithium hydroxide powder is an important raw material in the lithium battery industry, is expensive, and is very important to accurately weigh when being packaged. Lithium hydroxide has pungent taste, strong basicity and corrosivity, carbon dioxide and water are easily absorbed in the air, and lithium hydroxide dust flying out in the blanking and packaging process has serious harm to the environment and operators. Therefore, the automatic packaging of lithium hydroxide is realized, the packaging efficiency is improved, the manual participation is reduced, the environment is protected, the safety of operators is ensured, and the labor cost is reduced.

Disclosure of Invention

In order to solve the problems, the invention provides a lithium hydroxide powder packaging system, which realizes intelligent automatic packaging of lithium hydroxide, improves packaging efficiency, realizes accurate weighing of materials, removes dust and recovers the materials, avoids damage to environment and personnel safety, and reduces cost.

The technical scheme adopted by the invention is as follows:

the utility model provides a lithium hydroxide powder packaging system, includes the packagine machine that connects gradually along the direction of delivery of transfer chain, embraces bag running gear, sack closer, pushes away chartered plane, metal detection machine, weight reinspection machine, trimmer, spout a yard conveyer, pile up neatly mechanism and control system, packagine machine includes frame, feed bin, single-point weighing sensor, presss from both sides bag mechanism, props bag mechanism, the feed bin is fixed in the frame, single-point weighing sensor one end is fixed in the frame, the other end with press from both sides bag mechanism fixed connection, press from both sides bag mechanism fixed connection and prop bag mechanism.

By arranging the single-point weighing sensor, one end of the single-point weighing sensor is connected with the rack, and the other end of the single-point weighing sensor is connected with the bag clamping mechanism and the bag opening mechanism, when the materials are discharged and packaged, the material packaging bags are clamped on the bag clamping mechanism, and the bag openings are supported by the bag opening mechanism, so that the materials are prevented from being scattered outside the packaging bags; in the blanking process, the single-point weighing sensor is used for weighing the packaging material, when the packaging weight requirement is met, the single-point weighing sensor sends a signal to the control system, the control system closes the upstream valve and stops blanking, the number of the sensors is reduced, the time for calibrating the weighing sensors is shortened, meanwhile, the unstable weighing factors are reduced, and the weighing accuracy is improved.

Preferably, a first driving device is fixed at the top of the storage bin, a discharge pipe is fixedly communicated at the bottom of the storage bin, a fin plate valve is arranged in the discharge pipe and comprises a valve plate and a valve rod, and the valve rod vertically penetrates through the storage bin; the first driving device drives the valve rod to move up and down, the bottom of the valve rod is horizontally connected with a valve plate shaft, and the valve plate is rotatably connected to the valve plate shaft; the discharge pipe is characterized in that two sides of the valve plate are fixedly connected with sliding shafts, two opposite sides of the lower end of the discharge pipe wall are respectively and correspondingly provided with splayed sliding grooves, the sliding shafts are in sliding connection with the sliding grooves, and when the sliding shafts move to the lowest ends of the sliding grooves, the valve plate is used for completely closing the pipe orifices of the discharge pipe.

The first driving device drives the valve rod to move up and down so as to drive the sliding shaft on the valve plate to reciprocate along the sliding chute; when the packaging feeding is started, the valve rod drives the valve plate to move to the highest point, the opening degree of the finned plate valve is the largest at the moment, and the rough blanking is carried out; when the single-point weighing sensor detects that the feeding weight approaches to the packaging requirement, the valve rod drives the valve plate to move downwards along the sliding chute, the opening of the finned plate valve is gradually reduced, accurate blanking is carried out, and the valve plate of the finned plate valve is closed until the process value of the packaging requirement is reached; due to the ingenious design of the fin plate valve, the weighing precision is ensured, and meanwhile, the packaging efficiency is improved; the valve plate moves up and down to stir and loosen the materials in the discharge pipe, thereby preventing the materials from arching.

Preferably, the trapezoidal groove is seted up along under the valve plate, be equipped with the baffle on the both sides pipe wall that the spout was not seted up to the discharging pipe lower extreme respectively, the width of baffle with the valve plate width is the same, when the sliding shaft moved the spout minimum, the baffle down along with valve plate upper surface contact, and cover thereby the trapezoidal groove is completely closed the discharging pipe mouth. The design in dovetail groove makes under the valve plate can not stop the unloading immediately when reaching baffle department, but makes the material pass through from the dovetail groove, and along with the valve plate motion, the baffle covers the dovetail groove gradually, and the area that the material can pass through is more and more littleer, and the unloading is more and more accurate, covers the dovetail groove completely until the baffle, and the valve plate is closed the ejection of compact mouth of pipe with the baffle completely, has further improved the precision that the material weighed.

Preferably, a bag holding rotating device is arranged in front of the bag pushing machine on the conveying line, and comprises a frame, a lifting mechanism, a clamping mechanism and a rotating mechanism; the lifting mechanism comprises a lifting cylinder and a lifting support, the lifting cylinder is fixed on the frame, and a piston rod of the lifting cylinder is fixedly connected with the lifting support; the clamping mechanism comprises a clamping support, a clamping cylinder, a first bag clamp and a second bag clamp, the clamping cylinder and the first bag clamp are respectively fixed on the clamping support, a piston rod of the clamping cylinder is rotatably connected with the second bag clamp, and the clamping cylinder controls the first bag clamp and the second bag clamp to open and close; the rotating mechanism is connected with the lifting mechanism and the clamping mechanism and drives the clamping mechanism to rotate in a horizontal plane.

The piston rod of the clamping cylinder in the clamping mechanism retracts or extends to drive the second bag clamp and the first bag clamp to be separated and clamped, so that bagged materials can be loosened or clamped, and the piston rod of the lifting cylinder retracts or extends to drive the clamping mechanism to move up and down, so that the bagged materials are lifted up or put down; the rotating mechanism drives the clamping mechanism to rotate in a horizontal plane; the lifting mechanism, the rotating mechanism and the clamping mechanism are organically matched, so that the bagged materials are clamped, lifted, rotated and put down.

Preferably, a guide rail is fixed on the rack along the vertical direction, a sliding block is connected on the guide rail in a sliding manner, the sliding block is fixedly connected with the single-point weighing sensor, and the sliding block is driven by a second driving device and moves up and down along the guide rail; after the materials are completely loaded, the sliding block moves downwards along the guide rail to drive the bag clamping mechanism to send the packaging bags back to the conveying line, and the packaging bags filled with the materials move to the next station along with the conveying line; the slide block moves upwards along the guide rail to drive the bag clamping mechanism to reset, and then the next packaging and blanking is carried out.

Preferably, the bag clamping mechanism comprises a clamping plate and a bag clamping cylinder, and the bag clamping cylinder controls the opening and closing of the clamping plate; bag supporting mechanism includes supporting seat, support cylinder, connecting rod, first support, second support and vaulting pole, supporting seat fixed connection in on the clamp bag cylinder, and both ends difference rotatable coupling first support and second support, the cylinder end of the body and the tailpiece of the piston rod of support cylinder rotatable coupling respectively in same one end of first support, second support, the connecting rod both ends respectively with first support, second support rotatable coupling, and with supporting seat cross arrangement, the other end of first support and second support is equipped with the vaulting pole respectively. The bag opening mechanism adopts a four-bar mechanism, is flexible in action, and adjusts the distance between the two support rods through the extension and retraction of the piston rod of the support cylinder, so that the bag opening mechanism meets the requirements of packaging bags with different sizes.

Preferably, a weighing sensor is arranged on a fulcrum of the frame supporting bin. The weighing sensor and the first driving device are respectively in communication connection with the control system, the blanking amount of the bin is detected in real time through the weighing sensor, the opening and closing of the finned plate valve can be controlled, and the weighing sensor and the single-point weighing sensor are arranged in a double weighing mode, so that the material packaging and weighing accuracy is further guaranteed; the weighing sensor not only can play a role in weighing the materials in the packaging process, but also can be used as a continuous material level meter, and when the weighing sensor detects that the weight of the materials in the storage bin reaches a set lowest value, the control system opens the upstream valve to supply materials to the storage bin; when the situation that the materials in the storage bin reach the highest value is detected, the control system closes the upstream valve and stops feeding, and automatic feeding of the storage bin is achieved.

Preferably, still including locating the dust excluding hood of the discharge gate top of discharging pipe, dust excluding hood one end is fixed in on the slider, the top is equipped with the dust removal interface, and dust removal interface connection locates the outside dust pelletizing system of packagine machine, through setting up the dust excluding hood, the dust that drifts away in the unloading in-process of will packing passes through the dust pelletizing system and is siphoned away by the dust removal interface to retrieve, prevented the harm of drifted lithium hydroxide dust to environment and staff, and retrieve the material that drifts away, prevented the waste of material, the cost is reduced.

According to the lithium hydroxide powder packaging system provided by the invention, the single-point weighing sensors are arranged, so that the number of the sensors is reduced, the time for calibrating the weighing sensors is reduced, and the weighing accuracy is improved; by arranging the finned plate valve, the organic combination of rough blanking and accurate blanking is realized, the blanking accuracy is ensured, the working efficiency is improved, and meanwhile, the material arching is prevented; the bag holding rotating mechanism is arranged, so that the bagged materials can horizontally rotate, the structure is simple, and the automatic operation is realized; through setting up dust excluding hood and dust pelletizing system, retrieve the material that drifts away, prevented the waste of material, the cost is reduced has prevented the harm of the lithium hydroxide dust that drifts away to environment and staff.

Drawings

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

FIG. 2 is a schematic perspective view of another embodiment of the present invention;

fig. 3 is a schematic view of the overall structure of the packaging machine of the present invention;

FIG. 4 is a schematic structural view of a single point load cell, bag gripper mechanism portion of the present invention;

FIG. 5 is a schematic perspective view of the bag opening mechanism;

FIG. 6 is a schematic perspective view of a bin and a fin valve;

FIG. 7 is a schematic view of a structure of a fin valve;

FIG. 8 is a schematic perspective disassembled structure of a fin valve;

FIG. 9 is a schematic perspective view of a bag holding rotating device;

FIG. 10 is a schematic view of the structure of the installation position of the dust hood.

Reference numerals: 1. a packaging machine; 2. a bag holding travelling mechanism; 3. a bag sewing machine; 4. pushing the bag machine; 5. a metal detector; 6. a weight rechecking machine; 7. a code spraying conveyor; 8. a shaping machine; 9. a stacking mechanism; 10. a conveying line; 11. a dust removal system; 12. an automatic tray magazine; 13. a stacking manipulator; 14. a forklift; 15. packaging bags; 100. a frame; 101. a storage bin; 102. a single point weighing sensor; 103. a bag clamping mechanism; 1031. a splint; 1032. a bag clamping cylinder; 104. a bag opening mechanism; 1041. a supporting seat; 1042. a support cylinder; 1043. a connecting rod; 1044. a first bracket; 1045. a second bracket; 1046. a stay bar; 105. a first servo motor; 106. a discharge pipe; 1061. a chute; 1062. a baffle plate; 107. a fin valve; 1071. a valve plate; 1072. a valve stem; 1073. a valve plate shaft; 1074. a sliding shaft; 1075. a trapezoidal groove; 108. a guide rail; 109. a slider; 110. a dust removal interface; 111. a weighing sensor; 112. a dust hood; 200. a bag holding rotating device; 201. a frame; 202. a lifting mechanism; 2021. a lift cylinder; 2022. lifting the support; 203. a clamping mechanism; 2031. clamping the bracket; 2032. a clamping cylinder; 2033. a first bag clamp; 2034. a second bag holder; 204. a rotation mechanism; 2041. a rotating cylinder; 2042. a rack; 2043. a sector gear; 2044. a connecting rod.

Detailed Description

In order that those skilled in the art will be better able to understand the present invention, the following detailed description of the invention is given in conjunction with the accompanying drawings.

A lithium hydroxide powder packaging system comprises a packaging machine 1, a bag holding travelling mechanism 2, a bag sewing machine 3, a bag pushing machine 4, a metal detection machine 5, a weight rechecking machine 6, a shaping machine 7, a code spraying conveyor 8, a stacking mechanism 9 and a control system (not shown in the figure), which are sequentially connected along the conveying direction of a conveying line 10, wherein the packaging machine comprises a rack 100, a stock bin 101, a single-point weighing sensor 102, a bag clamping mechanism 103 and a bag supporting mechanism 104, the stock bin 101 is fixed on the rack 100, one end of the single-point weighing sensor 102 is fixed on the rack 100, the other end of the single-point weighing sensor is fixedly connected with the bag clamping mechanism 103, and the bag clamping mechanism 103 is fixedly connected with the bag supporting mechanism 104; the bag clamping mechanism 103 comprises a clamping plate 1031 and a bag clamping cylinder 1032, and the bag clamping cylinder 1032 controls the opening and closing of the clamping plate 1031 so as to loosen or clamp the packaging bag 15; the bag supporting mechanism 104 includes a supporting base 1041, a supporting cylinder 1042, a connecting rod 1043, a first support 1044, a second support 1045 and a supporting rod 1046, the supporting base 1041 is fixedly connected to the bag clamping cylinder 1032, two ends of the supporting base are respectively rotatably connected to the first support 1044 and the second support 1045, a cylinder body end and a piston rod end of the supporting cylinder 1042 are respectively rotatably connected to the same ends of the first support 1044 and the second support 1045, two ends of the connecting rod 1043 are respectively rotatably connected to the first support 1044 and the second support 1045 and are arranged to intersect with the supporting base 1041, and the other ends of the first support 1044 and the second support 1045 are respectively provided with the supporting rod 1046. The bag supporting mechanism 104 adopts a four-bar linkage mechanism, is flexible in action, and adjusts the distance between the two supporting rods 1046 by extending and retracting the piston rods of the supporting cylinders 1042, so that the requirements of packaging bags with different sizes are met.

A first driving device is fixed on the top of the storage bin 101, the first driving device is a first servo motor 105, the bottom of the first driving device is fixedly communicated with a discharge pipe 106, a fin valve 107 is arranged in the discharge pipe 106, the fin valve comprises a valve plate 1071 and a valve rod 1072, and the valve rod 1072 vertically penetrates through the storage bin 101; the first servo motor 105 drives the valve rod 1072 to move up and down, the bottom of the valve rod 1072 is horizontally connected with a valve plate shaft 1073, and the valve plate 1071 is rotatably connected with the valve plate shaft 1073; valve plate 1071 both sides fixed connection sliding shaft 1074, sliding shaft 1074 stretches out valve plate 1071's both sides, splayed spout 1061 is seted up respectively to the relative both sides of discharging pipe 106 wall lower extreme, sliding shaft 1074 stretch out the part of valve plate 1071 both sides with spout 1061 sliding connection, when sliding shaft 1074 moved spout 1061 least significant end, valve plate 1071 will the mouth of pipe of discharging pipe 106 is closed completely.

In order to further improve the precision of material weighing, in this embodiment, the trapezoidal groove 1075 is formed in the lower edge of the valve plate 1071, the baffle 1062 is respectively arranged on the pipe walls of two sides of the lower end of the discharge pipe 106, which are not provided with the chute 1061, the width of the baffle 1062 is the same as that of the valve plate 1071, and when the sliding shaft 1074 moves to the lowest end of the chute 1061, the lower edge of the baffle 1062 contacts with the upper surface of the valve plate 1071 and covers the trapezoidal groove 1075, so as to completely close the pipe orifice of the discharge pipe 106. The design of dovetail groove 1075 makes valve plate 1071 not stop the unloading immediately when following arrival baffle 1062 department down, but makes the material pass through from dovetail groove 1075, along with the motion of valve plate 1071, baffle 1062 covers dovetail groove 1075 gradually, the area that the material can pass through is more and more little, the unloading is more and more accurate, until reaching the technology numerical value that the packing required, baffle 1062 covers dovetail groove 1075 completely this moment, valve plate 1071 and baffle 1062 close discharging pipe 106 mouth of pipe completely, stop the unloading, the precision that the material weighed has further been improved.

In this embodiment, a bag holding rotating device 200 is arranged in front of the bag pushing machine 4 on the conveying line 10, and the bag holding rotating device 200 includes a frame 201, a lifting mechanism 202, a clamping mechanism 203, and a rotating mechanism 204; the lifting mechanism 202 comprises a lifting cylinder 2021 and a lifting bracket 2022, the lifting cylinder 2021 is fixed on the frame 201, and a piston rod of the lifting cylinder 2021 is fixedly connected with the lifting bracket 2022; the clamping mechanism 203 comprises a clamping bracket 2031, a clamping cylinder 2032, a first bag clamp 2033 and a second bag clamp 2034, the clamping cylinder 2032 and the first bag clamp 2033 are respectively fixed on the clamping bracket 2031, a piston rod of the clamping cylinder 2032 is rotatably connected with the second bag clamp 2034, the first bag clamp 2033 is rotatably connected with the second bag clamp 2034, and the clamping cylinder 2032 controls the opening and closing of the first bag clamp 2033 and the second bag clamp 2034; the rotating mechanism 204 connects the lifting mechanism 202 and the clamping mechanism 203 and drives the clamping mechanism 203 to rotate in a horizontal plane; the rotating mechanism 204 comprises a rotating cylinder 2041, a rack 2042, a sector gear 2043 and a connecting rod 2044, the rotating cylinder 2041 is fixed on the lifting bracket 2022, and a piston rod of the rotating cylinder 2041 is fixedly connected with the rack 2042; the sector gear 2043 is fixed to the top end of the connecting rod 2044 and is meshed with the rack 2042; the connecting rod 2044 vertically penetrates through the lifting bracket 2022 and is rotatably connected with the lifting bracket 2022, and the lower end of the connecting rod 2044 is connected with a clamping bracket 2031; the piston rod of the rotating cylinder 2041 retracts or extends to drive the rack 2042 to reciprocate, the rack 2042 is meshed with the sector gear 2043, the linear motion of the rack 2042 is converted into the rotary motion of the sector gear 2043, and therefore the clamping mechanism 203 is driven to rotate through the connecting rod 2044.

In order to realize automatic packaging, weighing and transporting of materials, in this embodiment, a guide rail 108 is fixed on the rack 100 along a vertical direction, a slider 109 is slidably connected on the guide rail 108, the slider 109 is fixedly connected with the single-point weighing sensor 102, the slider 109 is driven by a second driving device, and moves up and down along the guide rail 108, and the second driving device is a second servo motor (not shown in the figure); after the materials are loaded, the sliding block 109 moves downwards along the guide rail 108 to drive the bag clamping mechanism 103 to send the packaging bags 15 back to the conveying line 10, and the packaging bags 15 filled with the materials move to the next station along with the conveying line 10; the slide block 109 moves upwards along the guide rail 108 to drive the bag clamping mechanism 103 to reset for next packaging and blanking, and the conveying line 10 is a conveying belt.

And a weighing sensor 111 is arranged on a fulcrum of the frame 100 supporting the bin 101. The quantity of the weighing sensors 111 is 3, the weighing sensors 111 and the first servo motor 105 are respectively in communication connection with the control system, the blanking amount of the bin 101 is detected in real time through the weighing sensors 111, the opening and closing of the fin plate valve 107 can be controlled, the weighing sensors 111 and the single-point weighing sensor 102 are arranged in a dual weighing mode, and the weighing accuracy of material packaging is further guaranteed. The weighing sensor 111 not only can play a role in weighing the packaging, blanking and material, but also can be used as a continuous material level meter, and when the weighing sensor 111 detects that the weight of the material in the storage bin 101 reaches a set lowest value, the control system opens an upstream valve to supply the material to the storage bin 101; when the situation that the materials in the storage bin 101 reach the highest value is detected, the control system closes the upstream valve and stops feeding, and automatic feeding of the storage bin 101 is achieved.

This embodiment is still including locating the dust excluding hood 112 of the discharge gate top of discharging pipe 106, dust excluding hood 112 one end is fixed in on the slider 109, the top is equipped with dust removal interface 110, and dust removal interface 110 is connected and is located packagine machine 1 outside dust pelletizing system 11 through setting up dust excluding hood 112, inhales away by dust pelletizing interface 110 through dust pelletizing system 11 with the dust that drifts away in the unloading process of packing to retrieve, prevented the harm of the lithium hydrate dust that drifts away to environment and staff, and retrieve the material that drifts away, prevented the waste of material, the cost is reduced.

The process of packaging the lithium hydroxide powder is as follows: the bag clamping mechanism 103 clamps 15 openings of the packaging bags, the bag opening mechanism 104 opens the 15 openings of the packaging bags, the control system controls the first servo motor 105 to drive the fin valve 107 to perform blanking, and when the blanking amount weighed by the weighing sensor 111 meets the packaging requirement, the fin valve 107 is closed to finish blanking; in the blanking process, the single-point weighing sensor 102 is used for weighing the packaging bags 15 filled with the materials in real time, and simultaneously, the blanking amount is controlled; dust generated in the blanking process is sucked out by the dust hood 112 for recycling; after the blanking is finished, the second servo motor drives the sliding block 109 to move downwards along the guide rail 108, and the packaging bag 15 is placed on the conveying line 10; the bag holding travelling mechanism 2 acts to convey the packaging bag 15 to the bag sewing machine 3 to seal the packaging bag 15, the sealed packaging bag 15 moves to the bag holding rotating device 200 along with the conveying line 10, and the bag holding rotating device 200 horizontally rotates the packaging bag 15 for 90 degrees, so that the long edge of the bottom surface of the packaging bag 15 is changed from being parallel to the conveying line 10 to being perpendicular to the conveying line 10; then, the packaging bag 15 is pushed down through a bag pushing machine 4, metal detection is carried out on the materials in the packaging bag 15 through a metal detection machine 5, and the weight of the materials in the packaging bag 15 is rechecked through a weight rechecking machine 6; spraying codes on the packaging bags 15 through a code spraying conveyor 7; the materials in the packaging bag 15 are uniformly distributed in the packaging bag 15 through the shaping machine 8, so that stacking is facilitated; and then conveyed to a stacking mechanism 9 for stacking, wherein the stacking mechanism 9 comprises an automatic tray warehouse 12 and a stacking manipulator 13, and is conveyed away by a forklift 14 after being fully stacked.

The lithium hydroxide powder packaging system provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and central concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a lithium hydroxide powder packaging system, includes the packagine machine that connects gradually along the direction of delivery of transfer chain, embraces bag running gear, sack closer, pushes away chartered plane, metal detection machine, weight reinspection machine, trimmer, spout a yard conveyer, pile up neatly mechanism and control system, its characterized in that, packagine machine includes frame, feed bin, single-point weighing sensor, presss from both sides bag mechanism, props bag mechanism, the feed bin is fixed in the frame, single-point weighing sensor one end is fixed in the frame, the other end with press from both sides bag mechanism fixed connection, press from both sides bag mechanism fixed connection and prop bag mechanism.

2. The lithium hydroxide powder packaging system according to claim 1, wherein a first driving device is fixed on the top of the storage bin, a discharge pipe is fixedly communicated with the bottom of the storage bin, a fin valve is arranged in the discharge pipe and comprises a valve plate and a valve rod, and the valve rod vertically penetrates through the storage bin; a weighing sensor is arranged on a fulcrum of the frame supporting bin; the first driving device drives the valve rod to move up and down, the bottom of the valve rod is horizontally connected with a valve plate shaft, and the valve plate is rotatably connected to the valve plate shaft; the discharge pipe is characterized in that two sides of the valve plate are fixedly connected with sliding shafts, two opposite sides of the lower end of the discharge pipe wall are respectively and correspondingly provided with splayed sliding grooves, the sliding shafts are in sliding connection with the sliding grooves, and when the sliding shafts move to the lowest ends of the sliding grooves, the valve plate is used for completely closing the pipe orifices of the discharge pipe.

3. The lithium hydroxide powder packaging system according to claim 2, wherein the lower edge of the valve plate is provided with a trapezoidal groove, the two side walls of the lower end of the discharge pipe, which are not provided with the chute, are respectively provided with a baffle plate, the width of the baffle plate is the same as the width of the valve plate, and when the sliding shaft moves to the lowest end of the chute, the lower edge of the baffle plate contacts with the upper surface of the valve plate and covers the trapezoidal groove to completely close the opening of the discharge pipe.

4. The lithium hydroxide powder packaging system according to claim 1, wherein a bag holding rotating device is arranged in front of the conveying line upward-pushing machine, and comprises a frame, a lifting mechanism, a clamping mechanism and a rotating mechanism; the lifting mechanism comprises a lifting cylinder and a lifting support, the lifting cylinder is fixed on the frame, and a piston rod of the lifting cylinder is fixedly connected with the lifting support; the clamping mechanism comprises a clamping support, a clamping cylinder, a first bag clamp and a second bag clamp, the clamping cylinder and the first bag clamp are respectively fixed on the clamping support, a piston rod of the clamping cylinder is rotatably connected with the second bag clamp, and the clamping cylinder controls the first bag clamp and the second bag clamp to open and close; the rotating mechanism is connected with the lifting mechanism and the clamping mechanism and drives the clamping mechanism to rotate in a horizontal plane.

5. The lithium hydroxide powder packaging system according to claim 1, wherein a guide rail is fixed on the frame along a vertical direction, the guide rail is slidably connected with a sliding block, the sliding block is fixedly connected with the single-point weighing sensor, and the sliding block is driven by a second driving device to move up and down along the guide rail.

6. The lithium hydroxide powder packaging system according to claim 1, wherein the bag clamping mechanism comprises a clamping plate and a bag clamping cylinder, and the bag clamping cylinder controls the clamping plate to open and close; bag supporting mechanism includes supporting seat, support cylinder, connecting rod, first support, second support and vaulting pole, supporting seat fixed connection in on the clamp bag cylinder, and both ends difference rotatable coupling first support and second support, the cylinder end of the body and the tailpiece of the piston rod of support cylinder rotatable coupling respectively in same one end of first support, second support, the connecting rod both ends respectively with first support, second support rotatable coupling, and with supporting seat cross arrangement, the other end of first support and second support is equipped with the vaulting pole respectively.

7. The lithium hydroxide powder packaging system according to claim 1, wherein a load cell is disposed on a fulcrum of the frame support bin.

8. The lithium hydroxide powder packaging system according to claim 1, further comprising a dust hood disposed above the discharge port of the discharge pipe, wherein one end of the dust hood is fixed on the slider, a dust removal port is disposed at the top of the dust hood, and the dust removal port is connected to a dust removal system disposed outside the packaging machine.