Powder packaging device and iron phosphate powder packaging equipment thereof

Abstract

The invention provides a powder packaging device and iron phosphate powder packaging equipment thereof. The powder packaging device comprises a support with a negative pressure pump, a material tank, an internal structure of the material tank, a packaging bag opening clamping and adjusting mechanism and a closed packaging mechanism. The material tank is divided into a feeding bin and a storage bin and is provided with a dust filter cartridge, a spiral conveying rod and other parts, and it is guaranteed that powder smoothly enters the storage bin. A packaging bag is automatically clamped and opened by the eccentric clamping shaft and the suction cups on the rhombic frame, and powder filling is facilitated. And after filling is completed, the packaging bag is moved into the fixed cover body, air in the bag is exhausted in an inflation extrusion mode, and heat sealing treatment is conducted through an electric heating sealing strip. In addition, the device is provided with auxiliary functions such as a weighing sensor, a dust removal vibration motor and a spiral dust settling sheet, and a dust removal ring and valve disc mechanism used for controlling opening and closing of a bag opening. According to the powder packaging machine, the powder packaging efficiency and environmental protection performance are improved, the packaging process is simplified, the equipment cost and the space requirement are reduced, and the powder packaging machine is particularly suitable for packaging of powder such as iron phosphate.

Description

Technical Field

[0001] The invention belongs to the field of powder packaging, and relates to a powder packaging device and iron phosphate powder packaging equipment thereof. Background Art

[0002] With the continuous advancement of modern industrial technology, ultrafine powder has been widely used in many fields such as lithium battery materials, catalysts, medicine, cosmetics, etc. due to its unique physical and chemical properties. In particular, iron phosphate (FePO4), as an important component of lithium-ion battery positive electrode materials, has continued to grow in market demand. However, the problems faced by ultrafine powder in the production and packaging process are becoming increasingly prominent, especially in the packaging link.

[0003] At present, most powder packaging equipment on the market adopts an assembly line production mode, and the loading and sealing links are separated from each other, which not only increases the length and complexity of the production line, but also increases the equipment cost. In addition, traditional powder packaging equipment usually relies on a spiral feeding system to achieve quantitative supply of materials, and the powder below is sent to the top storage bin by spiral conveying. Although this feeding method can meet certain precision requirements, in order to meet the requirement of directly using a spiral feeding rod to complete the feeding, the spiral feeding equipment needs to be set at an angle, which further increases the length of the packaging equipment, occupies more production space, and is not conducive to the compact layout inside the factory.

[0004] In addition, ultrafine powders are prone to dust during packaging. As a typical ultrafine powder, iron phosphate dust can easily escape into the air during packaging, resulting in a significant increase in dust content in the packaging workshop. High concentrations of dust not only affect the cleanliness of the production environment and increase the workload of cleaning and maintenance, but more importantly, pose a serious threat to the health of workers. Workers may suffer from respiratory diseases and other occupational diseases if exposed to high dust environments for a long time. Summary of the invention

[0005] The purpose of the present invention is to provide a powder packaging device, which adopts an integrated design of loading and sealing, and a vacuum feeding method, so as to reduce the equipment footprint, and perform efficient dust removal during the packaging process, thereby ensuring the cleanliness and safety of the working environment and protecting the health of operators.

[0006] In order to solve the above technical problems, the present invention provides a powder packaging device, comprising a bracket, a negative pressure pump is installed on one side of the bracket, a mounting bracket is arranged forward on the top of the bracket, a material tank is installed on the mounting bracket, the material tank is divided into a feed bin located at the upper part and a storage bin located at the lower part by a partition, a feed pipe connected with the feed bin is arranged outwardly at the upper end of the material tank, the feed pipe is connected with a suction hose, a negative pressure isolation cover is arranged downward on the top of the feed bin, the outer diameter of the negative pressure isolation cover is smaller than the inner diameter of the feed bin, a gap is left between the lower side of the negative pressure isolation cover and the partition, a dust filter cartridge is arranged on the top of the feed bin in the negative pressure isolation cover, a negative pressure port connected with the dust filter cartridge is arranged on the top of the material tank, and the negative pressure port is connected with the inlet end of the negative pressure pump through the negative pressure pipe;

[0007] The lower part of the material tank is conical, and a feeding pipe connected to the storage bin is downwardly arranged at the lower end of the material tank, and a driving motor is installed at the upper end of the material tank. The power output shaft of the driving motor is connected to a rotating shaft that passes downward through the partition and extends into the storage bin. A rotating hole that is sealingly rotatably connected to the rotating shaft is opened at the bottom of the dust filter cartridge, and a spiral feeding rod that extends upward into the lower end of the feeding pipe is connected to the lower end of the partition. A negative pressure isolation discharge barrel is arranged at the lower end of the partition. The negative pressure isolation discharge barrel is a horizontally arranged cylindrical shape, a feed port connected to the feed bin is provided at the upper end of the negative pressure isolation discharge barrel, a discharge port connected to the storage bin is provided at the lower end of the negative pressure isolation discharge barrel, a horizontal axis arranged along its length direction is rotatably connected inside the negative pressure isolation discharge barrel, a plurality of baffles distributed in a circumference and in contact with the inner wall of the negative pressure isolation discharge barrel are arranged outside the horizontal axis, and a discharge motor for driving the horizontal axis to rotate is installed on the side wall of the material tank;

[0008] A lifting drive mechanism is provided on one side of the bracket close to the mounting frame, and the lifting drive mechanism is connected to the lifting frame. Support arms are provided forward on both the left and right sides of the lifting frame, and the free end of each support arm is rotatably connected to two eccentric clamping shafts arranged in opposite directions, and each eccentric clamping shaft is rotatably connected to the corresponding support arm at an eccentric position, and the two eccentric clamping shafts on the same support arm clamp the opening edge of the packaging bag by rotating and matching, and each support arm is provided with a clamping drive assembly for driving the corresponding two eccentric clamping shafts to rotate;

[0009] The free end of each support arm is equipped with a telescopic motor arranged along the length direction of the eccentric clamping shaft, and the telescopic shafts of the two telescopic motors are cooperatively connected with a rhombus frame movable in a horizontal plane, and the rhombus frame is composed of four connecting rods connected in a head-to-tail rotation manner, and the front and rear positions of the rhombus frame are connected with suction cups that can move with the rhombus frame, and the openings of the two suction cups are arranged opposite to each other to cooperate in sucking the two side walls of the packaging bag;

[0010] A base is arranged forward at the lower end of the bracket, a fixed cover body with a front opening is arranged upward on one side of the base close to the bracket, a movable cover body with an upper opening is hingedly connected to one side of the base close to the fixed cover body, a mounting groove is arranged downwardly on the base, an end of the mounting groove away from the bracket is rotatably connected to an electric hydraulic telescopic rod, a free end of the electric hydraulic telescopic rod is rotatably connected to the lower end of the movable cover body, a first rubber sealing ring is arranged at the edge of the open end of the fixed cover body, and a second rubber sealing ring is arranged at the edge of the open end of the movable cover body;

[0011] The outlet end of the negative pressure pump is connected with an air outlet pipe, and the air outlet pipe is connected with an exhaust pipe, a first air injection pipe and a second air injection pipe. The exhaust pipe, the first air injection pipe and the second air injection pipe are all provided with solenoid valves. The first air injection pipe is connected and communicated with the fixed cover body. An air injection cylinder connected with the second air injection pipe is horizontally arranged at the upper end of the fixed cover body. An electric heat seal is arranged in the fixed cover body at the front side of the air injection cylinder. The front side of the air injection cylinder is connected to multiple piston tubes forwardly, and the rear side of the electric heat seal is provided with multiple piston shafts that are sealingly and slidably connected to the piston tubes one by one. A sealing support strip that cooperates with the electric heat seal is arranged in the movable cover body away from its hinge.

[0012] By adopting the above technical scheme, when packaging powder materials, first insert the extraction hose into the material tank filled with powder materials, start the negative pressure pump, and then open the exhaust pipe to exhaust air, generating negative pressure suction to draw the powder materials into the feed bin along the extraction hose, and the negative pressure isolation cover plays a barrier role to prevent the powder materials from being directly adsorbed onto the dust filter cartridge, so that the powder materials can directly sink to the bottom of the feed bin, and the spiral dust settling sheet plays a role of dust precipitation to prevent excessive dust from being adsorbed onto the dust filter cartridge, and slides into the negative pressure isolation discharge barrel along the feed port, and the discharge motor drives the baffle to rotate, and under the premise of maintaining the pressure separation between the feed bin and the storage bin, the powder materials fall from the discharge port into the storage bin;

[0013] The operator takes a packaging bag, keeps the opening flat, and inserts it from bottom to top between the two eccentric clamping shafts on both sides. The clamping drive assembly drives the two eccentric clamping shafts to rotate at the same time to clamp the two sides of the packaging bag opening. Then the two telescopic motors shorten at the same time, and the diamond frame flattens forward and backward, driving the two suction cups to squeeze and suck the outer wall of the packaging bag. After sucking, the telescopic motors extend at the same time, and the diamond frame becomes pointed forward and backward, driving the two suction cups to move outward at the same time to open the opening of the packaging bag. The lifting drive mechanism drives the lifting frame to move upward, driving the packaging bag to move upward so that the feeding tube extends into it, and the driving motor drives the spiral feeding rod to rotate, gradually adding the powder in the storage barrel into the packaging bag until the loading is completed;

[0014] After the packaging bag is full, the lifting drive mechanism drives the lifting frame to descend, so that the packaging bag is placed in the fixed cover body, the electric hydraulic telescopic rod is extended to drive the movable fixed cover to rotate upward to fit with the fixed cover body, and the bag mouth of the packaging bag extends out of it, the suction cup is separated from the packaging bag, the negative pressure pump is started, the first air injection pipe is opened, the feed pipe is opened, and air is inflated between the fixed cover body and the movable cover body, and at the same time, powder is extracted and added into the feed bin. The inflation pressure in the fixed cover body and the movable cover body increases, and the air in the packaging bag is gradually squeezed out. After the air is completely squeezed out, the second air injection pipe is opened to inject air into the air injection cylinder, and the electric heat seal strip is pushed to squeeze the bag mouth in the direction of the sealing support strip, and the electric heat seal strip is energized to heat and heat-seal the opening of the packaging bag;

[0015] After the sealing is completed, the electric hydraulic telescopic rod drives the movable fixed cover to rotate downward and reset, and the electric telescopic rod drives the eccentric clamping shaft to rotate in the opposite direction to loosen the two sides of the packaging bag, thus completing one powder packaging.

[0016] The present invention is further configured such that a plurality of support seats are provided on the outer wall of the material tank, and the lower end of each support seat is connected to the upper end of the mounting frame via a weighing sensor.

[0017] The present invention is further configured such that a dust removal vibration motor is installed at the bottom of the dust filter cartridge.

[0018] The present invention is further configured such that a connecting sleeve rotatably connected to the rotating shaft is vertically arranged below the dust filter cartridge in the negative pressure isolation cover, and a plurality of spiral dust-receiving sheets distributed in a circle are connected between the outer wall of the connecting sleeve and the inner wall of the negative pressure isolation cover.

[0019] The present invention is further configured such that the lifting drive mechanism includes a slide rail vertically arranged on the front side of the bracket, a lifting drive motor is installed on the upper end of the slide rail, a power output shaft of the lifting drive motor is downwardly connected to a threaded shaft, and a threaded sleeve is provided on the rear side of the lifting frame which is slidably connected to the slide rail and threadedly connected to the threaded shaft.

[0020] The present invention is further configured such that the front side of the bracket is vertically provided with limiting sliding grooves on both sides of the slide rail, and the left and right sides of the lifting frame are provided with limiting sliding bars slidably connected to the corresponding vertical slide rails.

[0021] The present invention is further configured such that each clamping drive assembly includes an electric telescopic rod rotatably connected to the outside of a corresponding support arm, each eccentric clamping shaft extends out of the corresponding support arm and is provided with a transmission gear, the two transmission gears on each support arm are meshed with each other, one of the transmission gears on each support arm is provided with a transmission arm outwardly, and the free end of each rotating arm is rotatably connected to the free end of the corresponding electric telescopic rod.

[0022] The present invention is further configured such that a first vertical connecting shaft is provided at one end of each suction cup away from its opening, each connecting rod is rotatably connected to a secondary connecting rod inwardly, the free end of each secondary connecting rod is rotatably connected to the corresponding first vertical connecting shaft, a sliding sleeve connected thereto is horizontally provided at one end of each suction cup away from its opening, the front and rear rotating joints of the rhombus frame are rotatably connected to the two connecting rods through a second vertical connecting shaft, each second vertical connecting shaft is provided with a sealing sliding shaft sealingly slidably connected to the corresponding sliding sleeve, and a vent is provided on the side wall of each sliding sleeve away from the corresponding suction cup position.

[0023] The present invention is further configured such that the first rubber sealing ring is provided with a first soft rubber strip on the upper side of the opening end of the fixed cover body that can be squeezed open by the gas in the packaging bag, and the second rubber sealing ring is provided with a second soft rubber strip on the side of the opening end of the movable cover body away from its hinge that can be squeezed open by the gas in the packaging bag.

[0024] The present invention also discloses an iron phosphate powder packaging machine, based on the above-mentioned powder packaging device, a hollow dust removal ring is arranged on the outer side of the lower part of the feeding pipe, the lower side of the dust removal ring is a downward inclined surface, a plurality of dust suction holes are opened on the lower side of the dust removal ring, the upper end of the dust removal ring is connected with a dust suction pipe arranged upward along the feeding pipe, the free end of the dust suction pipe is connected with the material pipe and connected with the feeding bin, a valve disk capable of blocking the feeding pipe is rotatably connected in the feeding pipe, a worm gear is arranged on one side of the valve disk extending out of the feeding pipe, a switch motor is installed on the feeding pipe, and a power output shaft of the switch motor is connected with a worm meshing with the worm gear.

[0025] By adopting the above technical solution, the switch motor drives the valve disk to rotate to control the opening and closing. At this time, the negative pressure pump works at low power, and the suction force generated by the dust suction hole can suck away the dust floating upward from the packaging bag to prevent it from floating out of the packaging bag and polluting the production environment.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] First, the present invention adopts vacuum feeding to replace the traditional spiral feeding, which reduces the space occupied by the spiral conveying pipe, and integrates the loading and sealing into one, so that the volume integration of the equipment is higher, the space occupied is smaller, and the manufacturing cost of the equipment is lower;

[0028] Secondly, when the powder is bagged, the dust floating upward from the packaging bag is continuously sucked away by the dust removal ring to prevent the dust from floating out of the packaging bag and polluting the production environment. In particular, when packaging powder such as iron phosphate, the harm caused by dust to the human body can be effectively reduced;

[0029] Thirdly, the present invention adopts the method of inflation and extrusion for vacuum packaging. Compared with the traditional vacuum packaging, the dust in the packaging bag will not be sucked away due to the negative pressure, which can not only avoid the powder from entering the air to pollute the environment, but also prevent the powder in the packaging bag from becoming less;

[0030] Fourthly, the present invention adopts a new packaging bag clamping and packaging bag opening structure, which has an ingenious and simple structure and can clamp the packaging bag more stably. When opening the packaging bag, there is no need to use an additional pneumatic structure or complex pipeline connection, and it can be achieved through ingenious structural transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a partial cross-sectional view used to show the internal structure of the material tank;

[0033] Figure 3 yes Figure 2 A magnified view of middle;

[0034] Figure 4 It is a partial cross-sectional view of the material tank;

[0035] Figure 5 Used to show the positional relationship between the negative pressure isolation cover and the dust filter cartridge;

[0036] Figure 6 Used to show the structural diagram of the part except the material tank;

[0037] Figure 7 Used to display the structure on the lifting frame;

[0038] Figure 8 Used to demonstrate the connection between the diamond frame and the suction cup;

[0039] Fig. 9 Used to display the internal structure of the fixed cover;

[0040] Fig.10 Used to display the internal structure of the movable cover.

[0041] Among them, 1. bracket; 2. negative pressure pump; 3. mounting frame; 4. material tank; 5. support seat; 6. weighing sensor; 7. feed bin; 8. storage bin; 9. feed pipe; 10. suction hose; 11. negative pressure isolation cover; 12. dust filter cartridge; 13. dust removal vibration motor; 14. negative pressure port; 15. negative pressure pipe; 16. connecting sleeve; 17. spiral dust plate; 18. feeding pipe; 19. driving motor; 20. rotating shaft; 21, rotating hole; 22, spiral feed rod; 23, dust removal ring; 24, dust suction hole; 25, dust suction pipe; 26, valve plate; 27, worm gear; 28, switch motor; 29, worm; 30, negative pressure isolation discharge barrel; 31, feed port; 32, discharge port; 33, horizontal shaft; 34, baffle; 35, discharge motor; 36, slide rail; 37, lifting drive motor; 38, threaded shaft; 39, lifting frame; 40, Threaded sleeve; 41, limit slide; 42, limit slide; 43, support arm; 44, eccentric clamping shaft; 45, electric telescopic rod; 46, transmission gear; 47, transmission arm; 48, telescopic motor; 49, connecting rod; 50, suction cup; 51, first vertical connecting shaft; 52, secondary connecting rod; 53, sliding sleeve; 54, second vertical connecting shaft; 55, sealing sliding shaft; 56, vent hole; 57, base; 58, fixed cover ; 59. movable cover; 60. mounting groove; 61. electric hydraulic telescopic rod; 62. first rubber sealing ring; 63. second rubber sealing ring; 64. first soft rubber strip; 65. second soft rubber strip; 66. air outlet pipe; 67. exhaust pipe; 68. first air injection pipe; 69. second air injection pipe; 70. solenoid valve; 71. air injection cylinder; 72. electric heat seal; 73. piston tube; 74. piston shaft; 75. sealing support strip. DETAILED DESCRIPTION

[0042] The following is a further detailed description of a powder packaging device and a ferric phosphate powder packaging device proposed by the present invention in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar parts.

[0043] Example, see Figure 1-10, Embodiment, a powder packaging device, with reference to the figure, a powder packaging device, including a bracket 1, a negative pressure pump 2 is installed on one side of the bracket 1, a mounting frame 3 is arranged forward on the top of the bracket 1, a material tank 4 is installed on the mounting frame 3, and three support seats 5 are arranged on the outer wall of the material tank 4, and the lower end of each support seat 5 is connected to the upper end of the mounting frame 3 through a weighing sensor 6, and the weight in the storage tank is monitored in real time through the three weighing sensors 6, and the weight of the bag is calculated by the weight reduced in the storage tank. The material tank 4 is divided into a feed bin 7 located at the upper part and a storage bin 8 located at the lower part by a partition, and a feed pipe 9 connected to the feed bin 7 is arranged outward from the upper end of the material tank 4, and the feed pipe 9 is connected to a pumping hose 10, and a cylindrical negative pressure isolation cover 11 is arranged downward from the top of the feed bin 7, and the outer diameter of the negative pressure isolation cover 11 is smaller than the inner diameter of the feed bin 7, and a gap is left between the lower side of the negative pressure isolation cover 11 and the partition.

[0044] A dust filter cartridge 12 is arranged at the top of the feed bin 7 in the negative pressure isolation cover 11, and a dust removal vibration motor 13 is installed at the bottom of the dust filter cartridge 12. The vibration motor vibrates regularly to shake off the dust attached to the dust filter cartridge 12 to prevent the dust filter cartridge 12 from being blocked due to long-term use. A negative pressure port 14 connected to the dust filter cartridge 12 is arranged on the top of the material tank 4, and the negative pressure port 14 is connected to the inlet end of the negative pressure pump 2 through a negative pressure pipe 15. A connecting sleeve 16 rotatably connected to the rotating shaft 20 is vertically arranged below the dust filter cartridge 12 in the negative pressure isolation cover 11. A plurality of spiral dust settling sheets 17 distributed in a circular pattern are connected between the outer wall of the connecting sleeve 16 and the inner wall of the negative pressure isolation cover 11. When the dust passes upward through the gaps between the spiral dust settling sheets 17, it can be more quickly deposited on the spiral dust settling sheets 17 under the blocking effect of the spiral dust settling sheets 17, and slide down along the spiral dust settling sheets 17 to the bottom of the feed bin 7.

[0045] The lower part of the material tank 4 is conical, and a feeding pipe 18 connected to the storage bin 8 is downwardly arranged at the lower end of the material tank 4. A driving motor 19 is installed at the upper end of the material tank 4. The power output shaft of the driving motor 19 is connected to a rotating shaft 20 that passes downward through the partition and extends into the storage bin 8. A rotating hole 21 sealed and rotatably connected to the rotating shaft 20 is opened at the bottom of the dust filter cartridge 12. A spiral feeding rod 22 that extends upward into the lower end of the feeding pipe 18 is connected to the lower end of the rotating shaft 20, and the powder is transported downward by the rotation of the spiral feeding rod 22. A circle of hollow dust removal ring 23 is arranged on the outer side of the lower part of the feeding pipe 18. The lower side of the dust removal ring 23 is an inclined surface inclined downward, which is convenient for extending downward into the packaging bag. A plurality of dust suction holes 24 are opened on the lower side of the dust removal ring 23. The upper end of the dust removal ring 23 is connected with a dust suction pipe 25 arranged upward along the feeding pipe 18. The free end of the dust suction pipe 25 is connected to the material pipe 4 and is connected to the feeding bin 7. A valve disk 26 capable of blocking the feeding pipe 9 is rotatably connected in the feeding pipe 9. One side of the valve disk 26 extends out of the feeding pipe 9 and is provided with a worm gear 27. A switch motor 28 is installed on the feeding pipe 9. The power output shaft of the switch motor 28 is connected with a worm 29 meshing with the worm gear 27. The switch motor 28 drives the valve disk 26 to rotate to control the opening and closing. The suction force generated by the dust suction hole 24 can suck away the dust floating upward from the packaging bag to prevent it from floating out of the packaging bag and polluting the production environment.

[0046] A negative pressure isolation discharge barrel 30 is provided at the lower end of the partition. The negative pressure isolation discharge barrel 30 is a horizontally arranged cylindrical shape. A feed port 31 connected to the feed bin 7 is opened at the upper end of the negative pressure isolation discharge barrel 30, and a discharge port 32 connected to the storage bin 8 is opened at the lower end of the negative pressure isolation discharge barrel 30. A horizontal axis 33 arranged along its length direction is rotatably connected inside the negative pressure isolation discharge barrel 30. A plurality of baffles 34 distributed in a circle and in contact with the inner wall of the negative pressure isolation discharge barrel 30 are arranged outside the horizontal axis 33. A discharge motor 35 for driving the horizontal axis 33 to rotate is installed on the side wall of the material tank 4. When the baffle 34 rotates, there can always be two baffles 34 in contact with the inner wall of the negative pressure isolation discharge barrel 30 to prevent the negative pressure in the feed bin 7 from being transmitted to the storage bin 8.

[0047] A lifting drive mechanism is provided on one side of the bracket 1 close to the mounting frame 3, and the lifting drive mechanism includes a slide rail 36 vertically arranged on the front side of the bracket 1, a lifting drive motor 37 is installed on the upper end of the slide rail 36, and a threaded shaft 38 is connected downwardly to the power output shaft of the lifting drive motor 37. The lifting drive mechanism is connected to a horizontally arranged lifting frame 39, and a threaded sleeve 40 is provided on the rear side of the lifting frame 39, which is slidably connected to the slide rail 36 and threadedly connected to the threaded shaft 38. A limiting slide groove 41 is vertically provided on both sides of the slide rail 36 on the front side of the bracket 1, and a limiting slide bar 42 slidably connected to the corresponding vertical slide rail 36 is provided on the left and right sides of the lifting frame 39. A support arm 43 is provided forward on both the left and right sides of the lifting frame 39, and the free end of each support arm 43 is rotatably connected with two eccentric clamping shafts 44 arranged in opposite directions, and each eccentric clamping shaft 44 is rotatably connected to the corresponding support arm 43 at an eccentric position, and the two eccentric clamping shafts 44 on the same support arm 43 clamp the opening edge of the packaging bag by rotating and cooperating, and each support arm 43 is provided with a clamping drive assembly for driving the corresponding two eccentric clamping shafts 44 to rotate, and each clamping drive assembly includes an electric telescopic rod 45 rotatably connected to the outer side of the corresponding support arm 43, and each eccentric clamping shaft 44 extends outward from the corresponding support arm 43 and is provided with a transmission gear 46, and the two transmission gears 46 on each support arm 43 are meshed with each other, and one of the transmission gears 46 on each support arm 43 is provided with a transmission arm 47 outwardly, and the free end of each rotating arm is rotatably connected to the free end of the corresponding electric telescopic rod 45, so that the two eccentric clamping shafts 44 can be driven to rotate simultaneously by the extension and retraction of the electric telescopic rod 45.

[0048] A telescopic motor 48 arranged along the length direction of the eccentric clamping shaft 44 is installed on the upper side of the free end of each support arm 43. The telescopic shafts of the two telescopic motors 48 are cooperatively connected to a diamond frame that moves in a horizontal plane. The diamond frame is composed of four connecting rods 49 that are rotatably connected end to end. A suction cup 50 that can move with the diamond frame is connected at the front and back ends. The openings of the two suction cups 50 are arranged opposite to each other to cooperate in sucking the two side walls of the packaging bag. A first vertical connecting shaft 51 is provided at the end of each suction cup 50 away from its opening, and each connecting rod 49 is rotatably connected to a secondary connecting rod 52 inwardly, and the free end of each secondary connecting rod 52 is rotatably connected to the corresponding first vertical connecting shaft 51, and the free end of each secondary connecting rod 52 is provided with a connecting hole rotatably connected to the corresponding first vertical connecting shaft 51, so that two small diamonds are formed on the front and rear sides of the diamond frame, and a sliding sleeve 53 connected thereto is horizontally provided at the end of each suction cup 50 away from its opening. The front and rear rotating joints of the diamond frame are rotatably connected to the two connecting rods 49 through a second vertical connecting shaft 54, and the free end of each connecting rod 49 is provided with a connecting hole rotatably connected to the corresponding second vertical connecting shaft 54. Each second vertical connecting shaft 54 ​​is provided with a sealing sliding shaft 55 sealingly and slidingly connected with the corresponding sliding sleeve 53. Two ventilation holes 56 are provided on the side wall of each sliding sleeve 53 away from the corresponding suction cup 50. When the telescopic motor 48 is shortened, the diamond frame and the small diamonds inside become flattened to the front and rear sides, so that the sealing sliding shaft 55 slides toward the suction cup 50 until it slides to the suction cup 50 position. When the telescopic motor 48 is extended, the diamond frame and the small diamonds inside become pointed to the front and rear sides, so that the sealing sliding shaft 55 slides away from the suction cup 50 until it slides through the ventilation hole 56, so that the ventilation hole 56 is connected with the suction cup 50. At this time, air is admitted into the suction cup 50, and the suction cup 50 can be separated from the packaging bag.

[0049] A base 57 is provided forwardly at the lower end of the bracket 1, and a fixed cover body 58 with an opening at the front side is provided upwardly on one side of the base 57 close to the bracket 1, and a movable cover body 59 with an opening at the upper end is hingedly connected to one side of the base 57 close to the fixed cover body 58, and a mounting groove 60 is provided downwardly at the base 57, and an electric hydraulic telescopic rod 61 is rotatably connected to the end of the mounting groove 60 away from the bracket 1, and the free end of the electric hydraulic telescopic rod 61 is rotatably connected to the lower end of the movable cover body 59, and the movable cover body 59 can be driven by the electric hydraulic telescopic rod 61 to rotate from horizontal to vertical to fit with the fixed cover body 58. A first rubber sealing ring 62 is provided at the edge of the open end of the fixed cover body 58, and a second rubber sealing ring 63 is provided at the edge of the open end of the movable cover body 59. The first rubber sealing ring 62 is provided with a first soft rubber strip 64 which can be squeezed open by the gas in the packaging bag on the upper side of the open end of the fixed cover body 58, and the second rubber sealing ring 63 is provided with a second soft rubber strip 65 which can be squeezed open by the gas in the packaging bag on the side away from the hinge of the open end of the movable cover body 59, so as to facilitate the extrusion of the packaging bag.

[0050] The outlet end of the negative pressure pump 2 is connected to an air outlet pipe 66, and the air outlet pipe 66 is connected to an exhaust pipe 67, a first air injection pipe 68 and a second air injection pipe 69. An electromagnetic valve 70 is provided on the exhaust pipe 67, the first air injection pipe 68 and the second air injection pipe 69. The first air injection pipe 68 is connected and communicated with the fixed cover body 58. An air injection cylinder 71 connected to the second air injection pipe 69 is horizontally arranged at the upper end of the fixed cover body 58, an electric heat seal strip 72 is arranged in the fixed cover body 58 at the front side of the air injection cylinder 71, the front side of the air injection cylinder 71 is connected to three piston tubes 73, and the rear side of the electric heat seal strip 72 is provided with three piston shafts 74 that are sealingly and slidably connected to the piston tubes 73 one by one. When air is injected into the air injection cylinder 71 through the second air injection pipe 69, the electric heat seal strip 72 can be pushed to be squeezed in the direction of the sealing support strip 75, and a sealing support strip 75 that cooperates with the electric heat seal strip 72 is arranged in the movable cover body 59 away from its hinge.

[0051] Working principle: When packaging powder materials, first insert the extraction hose 10 into the material tank filled with powder materials, start the negative pressure pump 2, and then open the exhaust pipe 67 to exhaust, generating negative pressure suction to draw the powder materials into the feed bin 7 along the extraction hose 10, and the negative pressure isolation cover 11 plays a barrier role to prevent the powder materials from being directly adsorbed onto the dust filter cartridge 12, so that the powder materials can directly sink to the bottom of the feed bin 7, and the spiral dust settling sheet 17 plays a role in dust precipitation to prevent excessive dust from being adsorbed onto the dust filter cartridge 12, and slides into the negative pressure isolation discharge barrel 30 along the feed port 31, and the discharge motor 35 drives the baffle 34 to rotate, and under the premise of maintaining the pressure separation between the feed bin 7 and the storage bin 8, the powder materials fall from the discharge port 32 into the storage bin 8;

[0052] The operator takes a packaging bag, keeps the opening flat, and inserts it from bottom to top between the two eccentric clamping shafts 44 on both sides. The electric telescopic rod 45 is extended and retracted to drive the two eccentric clamping shafts 44 to rotate and clamp the two sides of the packaging bag opening at the same time. Then, the two telescopic motors 48 are shortened at the same time, and the diamond frame becomes flat at the front and rear sides, driving the two suction cups 50 to squeeze and suck the outer wall of the packaging bag inward. After sucking, the telescopic motors 48 are extended at the same time, and the diamond frame becomes pointed at the front and rear sides, driving the two suction cups 50 to move outward at the same time to open the opening of the packaging bag.

[0053] After the packaging bag is opened, the lifting drive mechanism drives the lifting frame 39 to move upward, driving the packaging bag to move upward so that the feeding tube 18 extends into it, and the driving motor 19 drives the spiral feeding rod 22 to rotate, gradually adding the powder in the storage barrel into the packaging bag. During the process, the switch motor 28 drives the valve disk 26 to rotate to block the feeding tube 9, and the negative pressure pump 2 works at low power to generate negative pressure in the dust removal ring 23 to suck the floating dust into the feeding bin 7 through the dust suction hole 24 until the loading is completed;

[0054] After the packaging bag is full, the lifting drive mechanism drives the lifting frame 39 to descend, so that the packaging bag is placed in the fixed cover body 58, and the electric hydraulic telescopic rod 61 is extended to drive the movable fixed cover to rotate upward until it fits with the fixed cover body 58, and the bag mouth of the packaging bag extends out of it, the suction cup 50 is separated from the packaging bag, and the negative pressure pump 2 is started. The first air injection pipe 68 is opened, the feeding pipe 9 is opened, and air is inflated between the fixed cover body 58 and the movable cover body 59. At the same time, powder is extracted and added to the feeding bin 7. The inflation pressure in the fixed cover body 58 and the movable cover body 59 increases, and the air in the packaging bag is gradually squeezed out. After the air is completely squeezed out, the second air injection pipe 69 is opened to inject air into the air injection cylinder 71, pushing the electric heat seal strip 72 to squeeze and press the bag mouth in the direction of the sealing support strip 75, and the electric heat seal strip 72 is electrically heated to heat-seal the opening of the packaging bag;

[0055] After the sealing is completed, the electric hydraulic telescopic rod 61 drives the movable fixed cover to rotate downward and reset, and the electric telescopic rod 45 drives the eccentric clamping shaft 44 to rotate in the opposite direction to loosen the two sides of the packaging bag, thereby completing a powder packaging.

[0056] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0057] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A powder packaging device, comprising a bracket (1), a negative pressure pump (2) is installed on one side of the bracket (1), a mounting frame (3) is arranged forward on the top of the bracket (1), a material tank (4) is installed on the mounting frame (3), and the material tank (4) is divided into a feed bin (7) located at the upper part and a storage bin (8) located at the lower part by a partition, characterized in that: A feed pipe (9) communicating with the feed bin (7) is disposed outwardly from the upper end of the material tank (4), the feed pipe (9) being connected to a suction hose (10), a negative pressure isolation cover (11) being disposed downwardly from the top of the feed bin (7), the outer diameter of the negative pressure isolation cover (11) being smaller than the inner diameter of the feed bin (7), a gap being left between the lower edge of the negative pressure isolation cover (11) and the partition plate, a dust filter cartridge (12) being disposed at the top of the feed bin (7) in the negative pressure isolation cover (11), a negative pressure port (14) communicating with the dust filter cartridge (12) being disposed at the top of the material tank (4), the negative pressure port (14) being communicated with the inlet end of the negative pressure pump (2) through a negative pressure pipe (15); The lower part of the material tank (4) is conical, and a feeding pipe (18) communicating with the storage bin (8) is arranged downwardly at the lower end of the material tank (4). A driving motor (19) is installed at the upper end of the material tank (4). The power output shaft of the driving motor (19) is connected to a rotating shaft (20) passing through the partition downward and extending into the storage bin (8). A rotating hole (21) sealed and rotatably connected to the rotating shaft (20) is provided at the bottom of the dust filter cartridge (12). The lower end of the rotating shaft (20) is connected to a spiral feeding rod (22) extending upward into the lower end of the feeding pipe (18). A negative pressure isolation discharge barrel (30) is arranged at the lower end of the partition. The negative pressure isolation discharge barrel (30) is a horizontally arranged cylindrical shape, the upper end of the negative pressure isolation discharge barrel (30) is provided with a feed port (31) connected to the feed bin (7), the lower end of the negative pressure isolation discharge barrel (30) is provided with a discharge port (32) connected to the storage bin (8), the negative pressure isolation discharge barrel (30) is rotatably connected to a horizontal shaft (33) arranged along its length direction, a plurality of baffles (34) are arranged outside the horizontal shaft (33) and are distributed in a circumference and in contact with the inner wall of the negative pressure isolation discharge barrel (30), and a discharge motor (35) for driving the horizontal shaft (33) to rotate is installed on the side wall of the material tank (4); A lifting drive mechanism is provided on one side of the bracket (1) close to the mounting frame (3), and the lifting drive mechanism is connected to a lifting frame (39). Support arms (43) are provided forward on both the left and right sides of the lifting frame (39), and the free end of each support arm (43) is rotatably connected to two eccentric clamping shafts (44) arranged in opposite directions, and each eccentric clamping shaft (44) is rotatably connected to the corresponding support arm (43) at an eccentric position, and the two eccentric clamping shafts (44) on the same support arm (43) clamp the opening edge of the packaging bag by rotating and matching, and each support arm (43) is provided with a clamping drive assembly for driving the corresponding two eccentric clamping shafts (44) to rotate; The free end of each support arm (43) is equipped with a telescopic motor (48) arranged along the length direction of the eccentric clamping shaft (44), and the telescopic shafts of the two telescopic motors (48) are cooperatively connected with a rhombus frame movable in a horizontal plane, and the rhombus frame is composed of four connecting rods (49) connected end to end for rotation, and the front and rear positions of the rhombus frame are connected with suction cups (50) that can move with the rhombus frame, and the openings of the two suction cups (50) are arranged opposite to each other to cooperate with sucking the two side walls of the packaging bag; A base (57) is arranged forward at the lower end of the bracket (1); a fixed cover body (58) with a front opening is arranged upward on one side of the base (57) close to the bracket (1); a movable cover body (59) with an upper opening is hingedly connected to one side of the base (57) close to the fixed cover body (58); a mounting groove (60) is arranged downward on the base (57); an end of the mounting groove (60) away from the bracket (1) is rotatably connected to an electric hydraulic telescopic rod (61); a free end of the electric hydraulic telescopic rod (61) is rotatably connected to the lower end of the movable cover body (59); a first rubber sealing ring (62) is arranged at the edge of the open end of the fixed cover body (58); and a second rubber sealing ring (63) is arranged at the edge of the open end of the movable cover body (59); The outlet end of the negative pressure pump (2) is connected to an air outlet pipe (66), and the air outlet pipe (66) is connected to an exhaust pipe (67), a first air injection pipe (68) and a second air injection pipe (69). The exhaust pipe (67), the first air injection pipe (68) and the second air injection pipe (69) are all provided with an electromagnetic valve (70). The first air injection pipe (68) is connected to and communicates with the fixed cover body (58). The upper end of the fixed cover body (58) is horizontally provided with a solenoid valve (70) connected to the second air injection pipe (69). The fixed cover body (58) is provided with an electric heat seal strip (72) at the front side of the gas injection cylinder (71); the front side of the gas injection cylinder (71) is connected to a plurality of piston tubes (73) in front; the rear side of the electric heat seal strip (72) is provided with a plurality of piston shafts (74) which are sealingly and slidably connected to the piston tubes (73) in a one-to-one correspondence; and the movable cover body (59) is provided with a sealing support strip (75) which cooperates with the electric heat seal strip (72) away from its hinge.

2. A powder packaging device according to claim 1, characterized in that: The outer wall of the material tank (4) is provided with a plurality of support seats (5), and the lower end of each support seat (5) is connected to the upper end of the mounting frame (3) via a weighing sensor (6).

3. A powder packaging device according to claim 1, characterized in that: A dust removal vibration motor (13) is installed at the bottom of the dust filtering cartridge (12).

4. A powder packaging device according to claim 1, characterized in that: A connecting sleeve (16) rotatably connected to the rotating shaft (20) is vertically arranged in the negative pressure isolation cover (11) below the dust filter cartridge (12), and a plurality of spiral dust collecting plates (17) distributed in a circular pattern are connected between the outer wall of the connecting sleeve (16) and the inner wall of the negative pressure isolation cover (11).

5. A powder packaging device according to claim 1, characterized in that: The lifting drive mechanism comprises a slide rail (36) vertically arranged on the front side of the bracket (1); a lifting drive motor (37) is installed at the upper end of the slide rail (36); a power output shaft of the lifting drive motor (37) is downwardly connected to a threaded shaft (38); and a threaded sleeve (40) is provided on the rear side of the lifting frame (39) and is slidably connected to the slide rail (36) and threadedly connected to the threaded shaft (38).

6. A powder packaging device according to claim 5, characterized in that: The front side of the bracket (1) is vertically provided with limiting sliding grooves (41) on both sides of the slide rail (36), and the left and right sides of the lifting frame (39) are provided with limiting sliding bars (42) slidably connected to the corresponding vertical slide rails (36).

7. A powder packaging device according to claim 1, characterized in that: Each clamping drive assembly includes an electric telescopic rod (45) rotatably connected to the outer side of the corresponding support arm (43); each eccentric clamping shaft (44) extends out of the corresponding support arm (43) and is provided with a transmission gear (46); two transmission gears (46) on each support arm (43) are meshed with each other; one of the transmission gears (46) on each support arm (43) is provided with a transmission arm (47) outwardly; and the free end of each rotating arm is rotatably connected to the free end of the corresponding electric telescopic rod (45).

8. A powder packaging device according to claim 1, characterized in that: A first vertical connecting shaft (51) is arranged at one end of each suction cup (50) away from its opening, each connecting rod (49) is connected to a secondary connecting rod (52) in a rotatable manner inwardly, and a free end of each secondary connecting rod (52) is rotatably connected to the corresponding first vertical connecting shaft (51). A sliding sleeve (53) communicating with the corresponding first vertical connecting shaft (51) is arranged horizontally outward at one end of each suction cup (50) away from its opening, and the front and rear rotating joints of the rhombus frame are rotatably connected to the two connecting rods (49) through a second vertical connecting shaft (54), and each second vertical connecting shaft (54) is provided with a sealing sliding shaft (55) in a sealing and slidable manner connected to the corresponding sliding sleeve (53), and a vent hole (56) is arranged on the side wall of each sliding sleeve (53) away from the corresponding suction cup (50).

9. A powder packaging device according to claim 1, characterized in that: The first rubber sealing ring (62) is provided with a first soft rubber strip (64) on the upper side of the opening end of the fixed cover body (58) which can be squeezed open by the gas in the packaging bag, and the second rubber sealing ring (63) is provided with a second soft rubber strip (65) on the side of the opening end of the movable cover body (59) away from the hinge which can be squeezed open by the gas in the packaging bag.

10. An iron phosphate powder packaging machine, based on a powder packaging device according to any one of claims 1 to 9, characterized in that: A hollow dust removal ring (23) is arranged on the outer side of the lower part of the feeding pipe (18); the lower side of the dust removal ring (23) is an inclined surface inclined downward; a plurality of dust suction holes (24) are opened on the lower side of the dust removal ring (23); the upper end of the dust removal ring (23) is connected with a dust suction pipe (25) arranged upward along the feeding pipe (18); the free end of the dust suction pipe (25) is connected with the material pipe (4) and is connected with the feeding bin (7); a valve disc (26) capable of blocking the feeding pipe (9) is rotatably connected in the feeding pipe (9); one side of the valve disc (26) protrudes from the feeding pipe (9) and is provided with a worm gear (27); a switch motor (28) is installed on the feeding pipe (9); the power output shaft of the switch motor (28) is connected with a worm (29) meshing with the worm gear (27).

Images