Chemical raw material quantitative packaging device and method

Abstract

The present application relates to a kind of chemical raw materials quantitative packaging device and method, belong to chemical raw material packaging technical field.The present application provides a kind of chemical raw materials quantitative packaging device, including rack, support plate, temporary storage box, packaging bag clamping assembly and plugboard assembly, the top of rack is equipped with hopper and motor, temporary storage box is installed on rack, the bottom end of hopper is inserted into temporary storage box, support plate is located below temporary storage box, the bottom of temporary storage box is equipped with discharge port, discharge port is equipped with door assembly, packaging bag clamping assembly is used to tightly fixed in the inlet end of the packaging bag that is sleeved in the bottom of temporary storage box on temporary storage box, plugboard assembly can be inserted at the set height position in temporary storage box.The motor in the present application provides a kind of chemical raw materials quantitative packaging device can also maintain uniform speed operation in late stage of discharging, the present application provides a kind of chemical raw materials quantitative packaging method can effectively improve packaging efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical raw material packaging, in particular to a chemical raw material quantitative packaging device and method. BACKGROUND

[0002] The quantitative packaging of chemical raw materials refers to the process of accurately measuring and packaging liquid, powder, granular and other forms of chemicals according to predetermined weight, volume or molar number. This process is widely used in the fields of chemical industry, pharmaceutical industry, pesticide industry, food additives industry, new energy material industry, etc., and has very high requirements on precision, safety, environmental protection and automation level.

[0003] For powder chemical raw materials, due to their poor flowability, easy dusting, easy moisture absorption, easy agglomeration and other characteristics, special equipment and technology are needed to ensure precision, efficiency, safety and environmental protection in the automatic quantitative packaging process.

[0004] In the prior art, powder packaging equipment is generally used for packaging and processing powder chemical raw materials, such as the powder packaging equipment disclosed in Chinese patent application file CN108688836A. The equipment includes a rack, a base, a cylinder, a lifting table, a feeding bin and a carrier. The rack is vertically arranged on one side of the base. The lifting table is arranged on the upper end of the base and located on the side of the rack through the cylinder. The feeding bin is arranged on the upper side of the rack and located on the upper part of the lifting table. The carrier is arranged at the front end of the lifting table and located at the lower end of the discharge port of the feeding bin.

[0005] When the equipment is in use, the carrier is used to fix the packaging bag at the bottom of the feeding bin, and then the motor is started to control the rotation of the auger device in the feeding bin to load the powder material in the feeding bin into the packaging bag. The structure is simple, convenient to use, and effectively improves the packaging efficiency. However, in order to ensure the accuracy of the loading, the feeding speed needs to be controlled to be fast first and then slow. When the target amount is approached, the motor needs to be slowed down or operated in a point-by-point manner, which will slow down the whole discharging process and affect the packaging efficiency. SUMMARY

[0006] The present application provides a chemical raw material quantitative packaging device to solve the technical problem of the prior art that the powder packaging equipment needs to control the motor to slow down in the late filling stage to prolong the discharging time, resulting in reduced packaging efficiency.

[0007] The present application also provides a chemical raw material quantitative packaging method for packaging and processing powder chemical raw materials. The motor can maintain a uniform speed, and the packaging efficiency is higher.

[0008] To solve the above problems, the chemical raw material quantitative packaging device provided by the present application adopts the following technical scheme:

[0009] A chemical raw material quantitative packaging device comprises:

[0010] A rack is provided with a feeding hopper and a motor at the top of the rack, the inside of the feeding hopper is provided with a vertical auger conveying device, and the motor is in transmission connection with the auger conveying device to control the auger conveying device to run downward to discharge materials;

[0011] A supporting plate is movably installed on the rack below the feeding hopper and used for supporting a packaging bag;

[0012] Further comprising:

[0013] A temporary storage box is installed on the rack below the feeding hopper, the bottom end of the feeding hopper extends into the temporary storage box to discharge materials into the inner cavity of the temporary storage box, the supporting plate is below the temporary storage box, the bottom of the temporary storage box is provided with a discharge port, and a door assembly is arranged at the discharge port, the door assembly blocks the discharge port when the temporary storage box stores materials and opens the discharge port when the temporary storage box discharges materials;

[0014] A packaging bag clamping assembly is installed on the outer sidewall of the temporary storage box and used for tightly fixing the inlet end of the packaging bag sleeved on the bottom of the temporary storage box on the temporary storage box;

[0015] A plug plate assembly is arranged at the rear side of the temporary storage box, slidably installed on the rack in the front-rear direction, and capable of being inserted into the temporary storage box at a set height position, and when the plug plate assembly is inserted into the temporary storage box, the plug plate assembly is adapted to the inner sidewall of the temporary storage box in the circumferential direction to divide the inner cavity of the temporary storage box into a storage cavity and a quantitative discharge cavity arranged in sequence from top to bottom.

[0016] According to the above technical scheme, the powder discharged from the feeding hopper is first stored in the temporary storage box, when the height of the powder in the temporary storage box is higher than the height of the plug plate assembly, the plug plate assembly is inserted into the temporary storage box to divide the temporary storage box into the quantitative discharge cavity, the amount of the powder in the quantitative discharge cavity is fixed, and the powder in the quantitative discharge cavity is completely filled into the packaging bag to realize quantitative filling. During the discharging process of the quantitative discharge cavity and after the filling of the packaging bag is completed, the packaging bag is taken down and a new packaging bag is fixed at the discharge port of the temporary storage box, and the motor does not need to be stopped to stop discharging, the feeding hopper can be continuously in the discharging state, the discharged powder can be temporarily stored in the storage cavity, and after the plug plate assembly leaves the temporary storage box, the powder in the storage cavity falls into the quantitative discharge cavity, which can shorten the time required for filling the quantitative discharge cavity. Compared with the discharging mode of directly discharging the powder from the feeding hopper into the packaging bag, the motor does not need to be controlled to slow down in the later filling stage, and the packaging efficiency can be effectively improved.

[0017] Further, the plug plate assembly comprises a plug plate provided with a downwardly open groove at the bottom, a scraper plate arranged in parallel below the plug plate, two symmetrically arranged screw rods arranged at the left and right ends of the groove, two driving motors respectively connected with the two screw rods, and two sets of scissors arms respectively connected with the two screw rods.

[0018] With the above technical scheme, after the plug plate assembly is inserted into the temporary storage box, the driving motor controls the rotation of the screw rod, the screw rod drives the scissors arms to swing downward, and pushes the scraper plate downward. When the limiting plane on the moving block is in contact with the groove wall, the protruding part of the unlocking pin is pushed by the groove wall, so that the locking pin is separated from the screw rod. The screw rod continues to rotate, and the two movable ends of the top of the scissors arm are driven to move close to each other, so that the scissors arm is elongated, and the scraper plate continues to move downward. The scraper plate has a long enough downward movement stroke, so that the scraper plate can push all the powder in the temporary storage box downward, preventing the powder from being blocked in the temporary storage box.

[0019] Further, the plug plate assembly further comprises two symmetrically arranged sliding blocks, the sliding blocks are slidingly assembled on the scraper plate in the left-right direction, and two movable blocks are slidingly assembled on the sliding blocks in the front-rear direction.

[0020] With the above technical scheme, the two movable ends of the bottom of the scissors arm are movably connected on the scraper plate in the front-rear and left-right directions.

[0021] Further, the top of the scraper plate is provided with a sliding groove with an upward opening, the sliding blocks are slidingly assembled in the sliding groove in the left-right direction, and the left and right groove walls of the sliding groove have magnetism. When the sliding block is in contact with the corresponding groove wall, the sliding block can be adsorbed on the groove wall.

[0022] With the above technical scheme, during the reverse rotation of the screw rod to drive the moving blocks to move away from each other, the rotation of the moving blocks is hindered due to the adsorption of the sliding blocks by the groove walls. Therefore, the screw rod can first drive the moving blocks to move away from each other to retract the scissors arms, and then drive the moving blocks to rotate to make the scissors arms flip up to the horizontal state and be retracted into the groove, so that the movement process of the scissors arms is more determined.

[0023] Further, the circumferential outer wall of the scraper is matched and fitted with the circumferential inner wall of the temporary storage box.

[0024] By adopting the technical scheme, when the scraper moves downward, the powder adhered to the inner wall of the temporary storage box can be scraped off, the discharging is more thorough, and loss is avoided.

[0025] Further, the front end of the plug plate is provided with a containing groove, a vibration motor is movably arranged in the containing groove in the front-rear direction, a second elastic member is connected between the vibration motor and the groove bottom of the containing groove, the vibration motor is pushed by the second elastic member to extend to the outside of the baffle, and the vibration motor can be retracted into the containing groove when being pressed.

[0026] By adopting the technical scheme, during the process that the plug plate assembly is inserted into the temporary storage box, the vibration motor at the front end disturbs the powder accumulated in the temporary storage box, reduces the insertion resistance of the baffle assembly, and makes the baffle assembly easy to be inserted into the temporary storage box.

[0027] Further, the packaging bag clamping assembly comprises a connecting rod, a fixed plate, a pressing plate and a third elastic member, the connecting rod is vertically connected to the outer wall of the temporary storage box, the fixed plate is connected to one end of the connecting rod away from the temporary storage box, the pressing plate is slidably sleeved on the connecting rod, and the third elastic member is connected between the fixed plate and the pressing plate.

[0028] Further, the rear side of the temporary storage box is provided with a plug hole for matching and inserting the plug plate assembly, and a baffle is hinged to the rear inner wall of the temporary storage box and covers the plug hole.

[0029] By adopting the technical scheme, the baffle is arranged at the plug hole to prevent material leakage.

[0030] Further, the bottom end of the front wall and the rear wall of the temporary storage box is semicircular, the sealing door assembly comprises a flexible sealing plate and two groups of belt assemblies corresponding to the front and rear sides of the temporary storage box, the belt assembly comprises a driving pulley, a driven pulley and a rotary belt sleeved outside the driving pulley and the driven pulley, the driven pulley is coaxial with the semicircular bottom end of the temporary storage box, the flexible sealing plate is connected between the two rotary belts and tightly abuts against the temporary storage box, the flexible sealing plate seals the discharge port when moving to the position directly below the temporary storage box, and the flexible sealing plate opens the discharge port when moving to the left side or the right side of the temporary storage box.

[0031] By adopting the technical scheme, the packaging bag sleeved on the bottom of the temporary storage box does not affect the movement of the flexible sealing plate, and the opening and closing of the discharge port are facilitated.

[0032] The beneficial effect of the chemical raw material quantitative packaging device provided by the application is that the motor for controlling the operation of the auger conveying device can be kept in an open state for a long time, and does not need to be frequently started and stopped, which is beneficial to prolong the service life of the motor. The application can realize quantitative loading, so that the amount of powder loaded in each packaging bag remains constant. The application can reduce the generation of dust and avoid the loss of powder. The application can also avoid the adhesion of powder to the inner side wall of the temporary storage box, and the discharge is more complete.

[0033] The application further provides a chemical raw material quantitative packaging method, which is completed by using the above chemical raw material quantitative packaging device, and comprises the following steps:

[0034] S1, the top of the packaging bag is sleeved on the bottom of the temporary storage box, and the top of the packaging bag is pressed and fixed on the temporary storage box by using the packaging bag clamping assembly;

[0035] S2, the movable plate is controlled to move to a set position below the temporary storage box, so that the movable plate supports the packaging bag and keeps the packaging bag in a stacked state being pressed from top to bottom;

[0036] S3, the motor is started to control the operation of the auger conveying device, and the powdery chemical raw material in the feeding hopper is discharged into the temporary storage box;

[0037] S4, when the height of the powdery chemical raw material in the temporary storage box is higher than the plug plate assembly, the plug plate assembly is controlled to be inserted into the temporary storage box, so that the inner cavity of the temporary storage box is divided into a storage cavity and a quantitative discharge cavity arranged in sequence from top to bottom;

[0038] S5, the storage cavity continues to receive the powdery chemical raw material discharged from the feeding hopper, the door assembly controls the opening of the discharge port, the powdery chemical raw material in the quantitative discharge cavity falls into the packaging bag through the discharge port, and the movable plate moves downward at the same time, so that the packaging bag gradually unfolds in the process of receiving the powder.

[0039] The beneficial effect of the chemical raw material quantitative packaging method provided by the application is that the temporary storage box is arranged to realize quantitative discharge, the motor does not need to be slowed down in the later stage of filling, and the feeding hopper can be kept in a uniform discharge state, which is beneficial to improve the production and packaging efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 The structure diagram of the chemical raw material quantitative packaging device provided by the application Figure 1 ;

[0041] Figure 2 The structure diagram of the chemical raw material quantitative packaging device provided by the application Figure 2 ;

[0042] Figure 3Structure schematic diagram of temporary storage box in chemical raw material quantitative packaging device Figure 1 ;

[0043] Figure 4 Structure schematic diagram of temporary storage box in chemical raw material quantitative packaging device Figure 2 ;

[0044] Figure 5 Structure schematic diagram of plug-in plate assembly in chemical raw material quantitative packaging device Figure 1 ;

[0045] Figure 6 Structure schematic diagram of plug-in plate assembly in chemical raw material quantitative packaging device Figure 2 ;

[0046] Figure 7 Structure schematic diagram of plug-in plate assembly in chemical raw material quantitative packaging device Figure 3 ;

[0047] Figure 8 State schematic diagram of mutual locking between moving block and screw rod in chemical raw material quantitative packaging device

[0048] Figure 9 State schematic diagram of mutual unlocking between moving block and screw rod in chemical raw material quantitative packaging device

[0049] Figure 10 Structure schematic diagram of temporary storage box in chemical raw material quantitative packaging device

[0050] Explanation of reference signs

[0051] 1, rack; 2, supporting plate; 3, feeding hopper; 4, motor; 5, temporary storage box; 501, insertion hole; 502, discharging port; 6, plug-in plate; 601, groove; 7, driving pulley; 8, driven pulley; 9, rotary belt; 10, flexible sealing plate; 11, baffle; 12, scraper; 13, scissor arm; 14, sliding block; 15, movable block; 16, vibration motor; 17, driving motor; 18, screw rod; 181, locking hole; 19, moving block; 191, limiting plane; 20, first elastic member; 21, locking member; 211, locking pin; 212, connecting plate; 213, unlocking pin; 22, pressing plate; 23, lifting cylinder; 24, mounting plate; 25, belt driving motor; 26, fixed plate; 27, connecting rod; 28, third elastic member; 29, protective shell. DETAILED DESCRIPTION

[0052] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Those skilled in the art should know that the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0053] The following is one of the embodiments of the chemical raw material quantitative packaging device provided by the present application:

[0054] As shown in Figure 1 , Figure 2 , a chemical raw material quantitative packaging device comprises a rack 1, a feeding hopper 3, a motor 4, a temporary storage box 5, a sealing door assembly, a packaging bag clamping assembly, a supporting plate 2 and a plug-in plate assembly.

[0055] As shown in Figure 1 , Figure 2 , the rack 1 is arranged on the horizontal ground, and the bottom of the rack 1 is provided with moving wheels.

[0056] The feeding hopper 3 is inverted conical, installed on the top of the rack 1, and located at the front side of the rack 1. The top end of the feeding hopper 3 is provided with a feeding port, and the bottom end is provided with a discharging port. A vertical extending spiral conveying device is arranged in the inner cavity of the feeding hopper 3.

[0057] The motor 4 is installed on the top of the rack 1, and the motor 4 is drivingly connected with the spiral conveying device to drive the spiral conveying device to operate to discharge the powdery chemical raw material in the feeding hopper 3 from the discharging port.

[0058] The temporary storage box 5 is connected to the rack 1 through the mounting plate 24 and located below the feeding hopper 3. The discharging port at the bottom end of the feeding hopper 3 is inserted into the temporary storage box 5.

[0059] As shown in Figure 1 and Figure 10 , the bottom ends of the front side plate and the rear side plate constituting the temporary storage box 5 are semicircular, and the bottom ends of the left side plate and the right side plate extend to the top of the semicircular part of the front side plate and the rear side plate. The bottom end of the temporary storage box 5 is provided with an opening penetrating up and down, forming a discharging port 502 of the temporary storage box 5.

[0060] As shown in Figure 4 , the rear side plate constituting the temporary storage box 5 is provided with left and right extending insertion holes 501, and the inner side of the rear side plate is provided with a baffle 11 opposite to and covering the insertion holes 501. The top end of the baffle 11 is hinged to the rear side plate of the temporary storage box 5, and a torsional spring is arranged at the hinged position. The baffle 11 is used to block the insertion holes 501 when the plug-in plate assembly is not inserted into the insertion holes 501, to prevent the powdery chemical raw material in the temporary storage box 5 from leaking.

[0061] AsFigure 3 , Figure 4 As shown, the sealing assembly includes a belt assembly and a flexible sealing plate 10. The belt assembly has two sets, which are respectively located on the front and rear sides of the temporary storage box 5. The belt assembly includes a driving pulley 7, a driven pulley 8 arranged at intervals, and a rotary belt 9 fitted on the outside of the driving pulley 7 and the driven pulley 8.

[0062] The driving pulley 7 and the driven pulley 8 have the same diameter. The driven pulley 8 is coaxial with the semi-circular parts at the bottom of the front and rear side plates of the temporary storage box 5.

[0063] like Figure 4 As shown, in order to avoid interference, when there is insufficient space in the belt assembly located at the rear of the temporary storage box 5 to accommodate the drive pulley 7 in the belt assembly located at the front of the temporary storage box 5, the drive pulley 7 at that location can be replaced by multiple small pulleys arranged in a semi-circle.

[0064] A flexible sealing plate 10 is connected between two rotary belts 9 in two sets of belt assemblies. The flexible sealing plate 10 is a soft rubber plate that can be bent and deformed. The width of the flexible sealing plate 10 in the front-to-back direction is greater than the width of the temporary storage box 5 in the front-to-back direction. The flexible sealing plate 10 is in close contact with the outer circumferential wall of the temporary storage box 5. When the rotary belt 9 rotates to a position where the flexible sealing plate 10 is directly below the temporary storage box 5, the flexible sealing plate 10 blocks the discharge port 502 at the bottom of the temporary storage box 5. When the rotary belt 9 moves the flexible sealing plate 10 to the left or right wall of the temporary storage box 5, the discharge port 502 opens.

[0065] like Figure 1 As shown, a protective shell 29 is connected to the front side of the temporary storage box 5. The protective shell 29 is used to cover the belt assembly located on the front side of the temporary storage box 5. A belt drive motor 25 is installed on the protective shell 29 and is connected to the drive pulley 7 to drive the belt assembly.

[0066] like Figure 1 , Figure 2 As shown, the packaging bag clamping assembly is installed on the outside of the protective shell 29. The packaging bag clamping assembly includes a connecting rod 27, a fixing plate 26, a pressure plate 22, and a third elastic element 28. The connecting rod 27 is vertically connected to the protective shell 29. The fixing plate 26 is connected to the end of the connecting rod 27 facing away from the protective shell 29. The pressure plate 22 is slidably fitted on the connecting rod 27. The third elastic element 28 is connected between the fixing plate 26 and the pressure plate 22. The third elastic element 28 is a compression spring. The third elastic element 28 applies a pressing force to the pressure plate 22 toward the protective shell 29 to press the top of the packaging bag onto the temporary storage box 5.

[0067] like Figure 1 , Figure 2As shown, the pallet 2 is located below the temporary storage box 5, and the rack 1 is connected with a lifting cylinder 23 for driving the lifting movement of the pallet 2, and the pallet 2 is connected to the lifting output end of the lifting cylinder 23.

[0068] As shown in Figure 5 , Figure 6 , Figure 7 As shown, the plug-in plate assembly includes a plug-in plate 6, a scraper 12, a screw rod 18, a driving motor 17, a locking piece 21, a sliding block 14 and a scissor arm 13.

[0069] The plug-in plate 6 is horizontally arranged, and the bottom of the plug-in plate 6 is provided with a downwardly open groove 601. The front end of the plug-in plate 6 is provided with a plurality of left and right spaced accommodating grooves, and a vibration motor 16 is slidingly inserted into the accommodating groove. The vibration motor 16 is connected with the bottom surface of the accommodating groove by a second elastic member. In the natural state, the vibration motor 16 is pushed by the second elastic member to protrude forwardly from the plug-in plate 6. When the vibration motor 16 is pressed, it can be completely inserted into the accommodating groove. The vibration motor 16 is used to disturb the powder accumulated in the temporary storage box 5 during the process of inserting the plug-in plate assembly into the temporary storage box 5, thereby reducing the resistance of the powder to the plug-in plate assembly.

[0070] As shown in Figure 5 , the scraper 12 is located below the plug-in plate 6 and parallel to the plug-in plate 6. The circumferential outer wall of the scraper 12 is adapted to fit with the circumferential inner wall of the temporary storage box 5, so that the plug-in plate assembly can divide the inner cavity of the temporary storage box 5 into a storage cavity and a quantitative discharge cavity arranged in sequence when it is inserted into the temporary storage box 5. When the scraper 12 moves downward, it can scrape off the powder adhering to the inner wall of the temporary storage box 5, so that the discharge is more thorough. The top of the scraper 12 is provided with a chute with an upward opening, and magnetic blocks are embedded on the left and right side walls of the chute, so that the left and right side walls of the chute have magnetic properties.

[0071] As shown in Figure 6 , the screw rod 18 is provided with two screw rods 18, which are connected to the plug-in plate 6 along the front and rear directions and are left-right symmetrical. The two screw rods 18 are located in the groove 601 and are respectively located near the left and right side walls of the groove 601.

[0072] As shown in Figure 6 , Figure 9 Each of the front and rear sides of the screw rod 18 is provided with a threaded segment, the screw directions of the two threaded segments are opposite, and each of the front and rear ends of the screw rod 18 is provided with a locking hole 181 extending along the radial direction of the screw rod 18. Each of the two threaded segments on each screw rod 18 is connected with a moving block 19, and the two moving blocks 19 on the screw rod 18 are front and rear symmetrical, as shown in Figure 7 The side of the moving block 19 away from the other screw rod 18 is provided with a limiting plane 191.

[0073] The driving motors 17 are provided with two, both of which are installed on the rear side of the plug plate 6 and are in transmission connection with the two screw rods 18 respectively to drive the rotation of the two screw rods 18.

[0074] As shown in Figure 8 , the locking piece 21 is provided on the moving block 19, which includes a connecting plate 212 and locking pins 211 and unlocking pins 213 connected to the upper and lower ends of the connecting plate 212 respectively, the unlocking pins 213 are longer than the locking pins 211, and the first elastic element 20 is connected between the connecting plate 212 and the moving block 19, which is a compression spring.

[0075] In the locked state, the first elastic element 20 is in a natural state, the locking pin 211 is inserted into the locking hole 181 on the screw rod 18, and the end of the unlocking pin 213 away from the connecting plate 212 passes through the moving block 19 to the outside of one side of the limiting plane 191 in the moving block 19, and the structure of the locked state is as shown in Figure 8 , in this state, the moving block 19 can rotate synchronously with the screw rod 18, when the moving block 19 rotates with the screw rod 18 to the limiting plane 191 and the groove wall of the groove 601, the locking piece 21 is unlocked, and the state at this time is as shown in Figure 9 , the unlocking pin 213 is pushed into the moving block 19 by the groove wall of the groove 601, the unlocking pin 213 drives the locking pin 211 to separate from the locking hole 181, at this time, the connecting relationship between the moving block 19 and the screw rod 18 is only the screw transmission connection, and since the limiting plane 191 on the moving block 19 is in contact with the groove wall of the groove 601, the moving block 19 is stopped, when the screw rod 18 continues to rotate, it will drive the moving block 19 to move on the screw rod 18, so that the two moving blocks 19 are close to each other.

[0076] As shown in Figure 5 , the sliding block 14 is provided with two, which are arranged symmetrically left and right, and are slidingly assembled on the scraper 12 in the slide groove on the scraper 12 in the left-right direction. The sliding block 14 is provided with two movable blocks 15 arranged in front and back, both of which are slidingly assembled on the sliding block 14 in the front and back direction.

[0077] The scissors arm 13 is provided with two groups, which are located between the plug plate 6 and the scraper 12 and are arranged symmetrically left and right. The scissors arm 13 has two top movable ends and two bottom movable ends, the two top movable ends of the scissors arm 13 are hinged with the two moving blocks 19 on the screw rod 18 respectively, and the two bottom movable ends of the scissors arm 13 are hinged with the two movable blocks 15 on the sliding block 14 of the corresponding side respectively.

[0078] When the two screw rods 18 drive the moving blocks 19 to rotate in the locking state, the two groups of scissor arms 13 can be driven to overturn downward to the vertical state. When the two screw rods 18 continue to rotate to the unlocking state, the two moving blocks 19 on the screw rods 18 are driven to move close to each other, so that the scissor arms 13 are elongated downward. At the same time, when the two groups of scissor arms 13 rotate to the vertical state, the two sliding blocks 14 are respectively moved to the left and right ends in the sliding grooves on the scraper 12, and are respectively adsorbed on the left and right groove walls with magnetism on the sliding grooves. In the process of reverse rotation of the screw rods 18 to reset the scissor arms 13, under the magnetic attraction of the left and right groove walls, the sliding blocks 14 are not easy to leave the corresponding left and right groove walls, so in the process of reverse rotation of the screw rods 18, the two moving blocks 19 are first moved away from each other, driving the scissor arms 13 to first retract upward, and when the scissor arms 13 are retracted to the shortest limit size, the moving blocks 19 are rotated by the screw rods 18, so that the scissor arms 13 are turned upward and retracted into the groove 601 on the plug plate 6.

[0079] The rack 1 is provided with a horizontal moving cylinder, the plug plate 6 is connected to the output end of the horizontal moving cylinder, and the horizontal moving cylinder is used to drive the plug plate assembly to move forward. The temporary storage box 5 is provided with a material level sensor, and the material level sensor is in control connection with the horizontal moving cylinder. When the material level sensor detects that the height of the powder in the temporary storage box 5 is higher than the height of the plug hole 501, the horizontal moving cylinder controls the plug plate assembly to be inserted into the temporary storage box 5 from the plug hole 501.

[0080] In use, the inner cavity of the temporary storage box 5 is divided into a storage cavity and a quantitative discharging cavity by inserting the plug plate assembly into the temporary storage box 5, so that quantitative discharging can be realized, and the storage cavity can continuously receive the powder discharged from the feeding hopper 3 during discharging and replacement of a new packaging bag, so that the motor 4 can be in a working state for a long time, and does not need to be frequently started and stopped, the motor 4 has smaller loss and longer service life. After the plug plate assembly in the application is inserted into the temporary storage box 5, the scraper 12 can be controlled to move downward to scrape off the powder adhered to the inner side wall of the temporary storage box 5, so that the powder is discharged more completely, and the loss generated during discharging is reduced.

[0081] In the embodiment, the front end of the plug plate 6 is provided with a containing groove, and the second elastic member and the vibration motor 16 are installed in the containing groove. In other embodiments, the front end of the plug plate 6 is not provided with the containing groove, and the second elastic member and the vibration motor 16 are not provided.

[0082] In the embodiment, the door assembly comprises a belt assembly and a flexible sealing plate 10, the flexible sealing plate 10 is driven by the belt assembly to reciprocate between the bottom of the temporary storage box 5 and the side of the temporary storage box 5, so as to realize the closing and opening of the discharge port 502, in other embodiments, the door assembly comprises two door plates which are symmetrical and hinged at opposite ends on the temporary storage box 5, the two door plates are respectively connected with the left inner side wall and the right inner side wall of the temporary storage box 5 through inclined electric telescopic rods, the two ends of the electric telescopic rods are hinged with the door plates and the left inner side wall or the right inner side wall of the corresponding side of the temporary storage box 5, the opening of the discharge port 502 can be realized by controlling the door plates to turn down through the electric telescopic rods, and the discharge port 502 is closed when the sealing plate is turned to the horizontal state.

[0083] In the embodiment, the flexible sealing plate 10 is made of rubber soft plate, in other embodiments, the flexible sealing plate 10 can be made of nylon cloth, felt and other materials.

[0084] The chemical raw material quantitative packaging method provided by the application is completed by using the chemical raw material quantitative packaging device, and the method comprises the following steps:

[0085] S1, the top of the packaging bag is sleeved on the bottom of the temporary storage box 5, and the packaging bag clamping assembly is used to press and fix the top of the packaging bag on the temporary storage box 5;

[0086] S2, the supporting plate 2 is controlled to move to the set position below the temporary storage box 5, so that the supporting plate 2 supports the packaging bag and keeps the packaging bag in the stacked state which is pressed from top to bottom;

[0087] S3, the motor 4 is started, and the auger conveying device is controlled to operate, so as to discharge the powdery chemical raw material in the feeding hopper 3 into the temporary storage box 5;

[0088] S4, when the height of the powdery chemical raw material in the temporary storage box 5 is higher than that of the plug plate assembly, the plug plate assembly is controlled to be inserted into the temporary storage box 5, so as to divide the inner cavity of the temporary storage box 5 into the storage cavity and the quantitative discharge cavity which are arranged in sequence from top to bottom;

[0089] S5, the storage cavity continues to undertake the powder chemical raw materials discharged by the feeding hopper 3, the belt drive motor 25 drives the rotary belt 9 to rotate, the rotary belt 9 drives the flexible sealing plate 10 to move from the bottom of the temporary storage box 5 to the left side of the temporary storage box 5, and the discharge port 502 is opened; the driving motor 17 is started, the screw rod 18 is driven to rotate, the screw rod 18 drives the scissor arm 13 to overturn downward, the scraper 12 moves downward, the scissor arm 13 overturns to the vertical state, the screw rod 18 continues to rotate, the two moving blocks 19 are driven to move close to each other, the scissor arm 13 is elongated, the scraper 12 continues to move downward, the scraper 12 pushes the powder chemical raw materials in the temporary storage box 5 to fall into the packaging bag through the discharge port 502; while the powder falls into the packaging bag, the lifting cylinder 23 drives the supporting plate 2 to move downward at a constant speed, so that the packaging bag is gradually unfolded while loading the powder, to undertake the powder.

Claims

1. A chemical raw material quantitative packaging device, comprising: a rack, a feeding hopper and a motor are arranged on the top of the rack, a vertical auger conveying device is arranged in the feeding hopper, the motor is in transmission connection with the auger conveying device to control the auger conveying device to run downward to discharge materials; a supporting plate, which is movably arranged on the rack and below the feeding hopper, is used to support the packaging bag; characterized in that further comprising: a temporary storage box, which is arranged on the rack and below the feeding hopper, the bottom end of the feeding hopper extends into the temporary storage box to discharge materials into the inner cavity of the temporary storage box, the supporting plate is below the temporary storage box, the bottom of the temporary storage box is provided with a discharge port, a door assembly is arranged at the discharge port, the door assembly blocks the discharge port when the temporary storage box stores materials and opens the discharge port when the temporary storage box discharges materials; a packaging bag clamping assembly, which is arranged on the outer sidewall of the temporary storage box, is used to press and fix the inlet end of the packaging bag sleeved on the bottom of the temporary storage box on the temporary storage box; a plug plate assembly, which is arranged on the rear side of the temporary storage box, is slidably arranged on the rack in the front-rear direction, the plug plate assembly can be inserted into the temporary storage box at a set height position, and when the plug plate assembly is inserted into the temporary storage box, the inner sidewall of the temporary storage box is adaptively fitted in the circumferential direction to divide the inner cavity of the temporary storage box into a material storage cavity and a quantitative discharging cavity arranged in sequence from top to bottom; the plug plate assembly comprises a plug plate provided with a downwardly opened groove at the bottom, a scraper arranged parallel below the plug plate, two symmetrically arranged screw rods at the left and right ends of the groove extending in the front-rear direction, two driving motors in transmission connection with the two screw rods, and two sets of scissor arms connected to the two screw rods; two moving blocks are spirally connected to the screw rods, two movable ends on one side of the scissor arms are hingedly connected to the two moving blocks, and two movable ends on the other side are hingedly connected to the scraper in the front-rear and left-right directions; the moving blocks have a limiting plane parallel to the axis of the screw rod, a locking member is elastically movably arranged on the moving block, the locking member comprises a locking pin and an unlocking pin longer than the locking pin, the screw rod is provided with a locking hole, the locking pin is inserted into the locking hole, and the unlocking pin is located outside the screw rod and protrudes from the limiting plane; after the moving block rotates with the screw rod by a set angle, the limiting plane is fitted with the corresponding groove surface of the groove, and the unlocking pin is driven by the corresponding groove surface to make the locking pin disengage from the locking hole.

2. The chemical material quantitative packaging device according to claim 1, characterized in that, the plug plate assembly further comprises two symmetrically arranged sliding blocks, the sliding blocks are slidably assembled on the scraper in the left-right direction, two movable blocks are slidably assembled on the sliding blocks in the front-rear direction, and the two movable ends of the bottom end of the scissor arms are hingedly connected to the two movable blocks.

3. The chemical material quantitative packaging device according to claim 2, characterized in that, the top of the scraper is provided with a sliding groove with an upward opening, the sliding blocks are slidably assembled in the sliding groove in the left-right direction, and the left and right sidewalls of the sliding groove have magnetism, and the sliding blocks can be adsorbed on the corresponding sidewall when they are slidably assembled on the sidewall.

4. The chemical material packaging apparatus as claimed in claim 2 or 3, wherein the circumferential outer sidewall of the scraper is adaptively fitted with the circumferential inner sidewall of the temporary storage box.

5. The chemical material packaging apparatus as claimed in claim 2 or 3, wherein the front end of the plug plate is provided with a receiving groove, a vibration motor is movably inserted into the receiving groove in the front-rear direction, a second elastic member is connected between the vibration motor and the groove bottom of the receiving groove, the vibration motor is pushed by the second elastic member to extend to the outside of the baffle, and the vibration motor can be retracted into the receiving groove when it is pressed.

6. The chemical material packaging apparatus as claimed in any one of claims 1 to 3, wherein The packaging bag clamping assembly comprises a connecting rod, a fixing plate, a pressing plate and a third elastic member, the connecting rod is vertically connected to the outer side wall of the temporary storage box, the fixing plate is connected to one end of the connecting rod away from the temporary storage box, the pressing plate is slidingly sleeved on the connecting rod, and the third elastic member is connected between the fixing plate and the pressing plate.

7. The chemical material packaging apparatus as claimed in any one of claims 1 to 3, wherein The rear side of the temporary storage box is provided with a plug hole for the plug plate assembly to be adapted to plug into, and a baffle is hinged to the rear inner side wall of the temporary storage box and covers the plug hole.

8. The chemical material packaging apparatus as claimed in any one of claims 1 to 3, wherein The bottom end of the front side wall and the rear side wall of the temporary storage box is semicircular, the sealing door assembly comprises a flexible sealing plate and two groups of belt assemblies corresponding to the front and rear sides of the temporary storage box, the belt assembly comprises a driving pulley and a driven pulley distributed in an upper and lower manner and a rotary belt sleeved outside the driving pulley and the driven pulley, the driven pulley is coaxial with the semicircular bottom end of the temporary storage box, the flexible sealing plate is connected between the two rotary belts and tightly abuts against the temporary storage box, and the flexible sealing plate blocks the discharge port when being moved to the front of the temporary storage box and opens the discharge port when being moved to the left side or the right side of the temporary storage box.

9. A method for quantitative packaging of chemical raw materials, which is completed by using the quantitative packaging device for chemical raw materials according to claim 1, characterized in that, The method comprises the following steps: S1, the top of the packaging bag is sleeved on the bottom of the temporary storage box, and the packaging bag clamping assembly is used to press and fix the top of the packaging bag on the temporary storage box; S2, the supporting plate is controlled to move to a set position below the temporary storage box, so that the supporting plate supports the packaging bag and keeps the packaging bag in a stacked state being pressed from top to bottom; S3, the motor is started to control the auger conveying device to operate, and the powdery chemical raw materials in the feeding hopper are discharged into the temporary storage box; S4, when the height of the powdery chemical raw materials in the temporary storage box is higher than the plug plate assembly, the plug plate assembly is controlled to be inserted into the temporary storage box, so that the inner cavity of the temporary storage box is divided into a storage cavity and a quantitative discharge cavity arranged in sequence from top to bottom; S5, the storage cavity continues to receive the powdery chemical raw materials discharged from the feeding hopper, the sealing door assembly controls the discharge port to be opened, the powdery chemical raw materials in the quantitative discharge cavity fall into the packaging bag through the discharge port, and the supporting plate moves downward at the same time, so that the packaging bag is gradually unfolded in the process of receiving the powdery materials.

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