A PAM dosing device

Abstract

The present invention provides a PAM dosing device, which includes a reagent preparation device and a feeding device cooperating with the reagent preparation device. The feeding device includes a feeding box, a manipulator and a feeding station. The feeding station is used for placing bagged reagents to be added. The lower part of the feeding box is funnel-shaped and its lower end is connected to the feeding end of the reagent preparation device. The manipulator is arranged between the feeding box and the feeding station so that the manipulator transports the bagged reagents to the feeding box. An opening for the manipulator to pass through is arranged on one side of the feeding box close to the feeding station. A bag-opening knife is arranged inside the feeding box so that when the manipulator presses the bagged reagents against the bag-opening knife, the bag-opening knife cuts the lower part of the packaging bag of the bagged reagents. The bagged reagents are placed on the feeding station. The manipulator lifts the bagged reagents and transports them into the feeding box, and presses the bagged reagents against the bag-opening knife in the feeding box to cut the packaging bag. The pouring of the reagents is carried out in the closed feeding box, effectively avoiding the generation of dust.

Description

Technical Field

[0001] The present invention relates to the technical field of PAM dosing devices, and more particularly to a PAM dosing device. Background Art

[0002] Whether it is a municipal water treatment plant or a sewage treatment plant, a large amount of chemical agents are required in the purification treatment of water or sewage. Since the dosing form of the agent is often liquid and the concentration is low, water treatment plants or sewage treatment plants often need to prepare powder agents into liquid agents with a specific concentration. The types of agents are mainly PAM, PAC, sodium acetate, etc. At present, PAC and sodium acetate can be purchased as liquid agents for dilution and preparation, but PAM (polyacrylamide flocculant) solution is still prepared by dissolving powder agents. Polyacrylamide flocculant itself is harmless, but acrylamide monomers and incompletely polymerized short chains in the product are harmful to human health to a certain extent. The dosing concentration of PAM is generally 0.5% - 1%, but the purity of its powder PAM is above 90%. During the preparation process of the PAM solution, the powder PAM agent will enter the body of the water treatment plant management personnel through the respiratory tract and skin contact of people, which is harmful to human health. After investigation, some water treatment plant and sewage treatment plant management personnel reported that when the floor of the dosing room is wet and the powder during the preparation of the PAM agent spills onto the floor, it causes the floor to be slippery and poses certain safety problems.

[0003] It can be seen that the existing PAM dosing device is prone to generate dust, which will pollute the surrounding environment and cause harm to the human body. It is also easy to cause the agent to spill and make the ground slippery. Summary of the Invention

[0004] The purpose of the present invention is to provide a PAM dosing device that can effectively avoid generating dust.

[0005] The embodiments of the present invention are achieved by the following technical solutions:

[0006] A PAM dosing device includes a reagent preparation device and a feeding device cooperating with the reagent preparation device; the feeding device includes a feeding box, a manipulator, and a feeding station; the feeding station is used to place the bagged reagent to be added; the lower part of the feeding box is funnel-shaped and its lower end is connected to the feeding end of the reagent preparation device; the manipulator is arranged between the feeding box and the feeding station so that the manipulator transports the bagged reagent to the feeding box; an opening for the manipulator to pass through is arranged on one side of the feeding box close to the feeding station; a bag-opening knife is arranged inside the feeding box so that when the manipulator presses the bagged reagent against the bag-opening knife, the bag-opening knife cuts the lower part of the packaging bag of the bagged reagent.

[0007] Further, the manipulator includes a sliding part, a lifting cylinder, and a grasping part; the sliding part is slidably arranged on the track; the grasping part is connected to the lower part of the sliding part through the lifting cylinder, so that the grasping part moves along with the sliding part and the grasping part lifts under the drive of the lifting cylinder; the bag-opening knife is arranged below the manipulator, so that when the grasping part descends, the bag-opening knife abuts against the lower part of the bagged medicine.

[0008] Further, the grasping part includes a mounting plate, a sliding plate, sliding blocks, sliders, and grasping needles; the mounting plate is connected to the lifting cylinder; one sliding plate is slidably arranged at each end of the mounting plate, and the sliding directions of the two sliding plates are both parallel to the length direction of the mounting plate; one slider is slidably arranged at each end of the sliding plate, and the sliding directions of the two sliders are both parallel to the length direction of the sliding plate; each slider is provided with a grasping needle; the grasping needle protrudes downward from the lower surface of the mounting plate, so that when the mounting plate moves downward, the grasping needle inserts downward into the interior of the bagged medicine; each sliding plate and slider are provided with a driving device for driving them to slide.

[0009] Further, the driving device includes a driving motor and a driving screw; threads are arranged at both ends of the driving screw, and the directions of the threads at both ends of the driving screw are opposite; the two sliding plates are respectively threadedly connected to one end of a driving screw; the two sliders on each sliding plate correspond to a set of driving devices, and the two sliders are respectively threadedly connected to one end of a driving screw.

[0010] Further, a chute for the sliding plate to slide is arranged on the upper surface of the mounting plate; a chute for the slider to slide is arranged on the upper surface of the sliding plate; the grasping needle passes through the sliding plate and the mounting plate and protrudes from the lower surface of the mounting plate; through holes for the grasping needle to pass through are arranged on both the mounting plate and the sliding plate.

[0011] Further, a plurality of anti-slip grooves are distributed on the outer wall of the grasping needle along the length direction of the grasping needle.

[0012] Further, a pushing plate is also arranged below the mounting plate; a pushing spring for pushing the pushing plate away from the mounting plate is arranged between the pushing plate and the mounting plate; a through hole for the grasping needle to pass through is also arranged on the pushing plate.

[0013] Further, an air flow channel is arranged inside the grasping needle; a plurality of air holes communicating with the air flow channel are arranged on the outer wall of the grasping needle; the grasping needle is also connected with an air pipe.

[0014] Further, a packaging bag collection station is also provided on one side of the opening of the feeding box; the upper part of the packaging bag collection station is enclosed into a pipe shape by a baffle; a packaging bag collection box is provided at the lower part of the packaging bag collection station; and an exhaust fan is also provided inside the packaging bag collection station.

[0015] Further, a lifting platform is provided at the incoming material station; the bagged medicament is placed above the lifting platform.

[0016] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0017] When the PAM dosing device of the present invention is in use, the bagged medicament is placed at the incoming material station. Subsequently, the manipulator moves to the position of the bagged medicament, picks up the bagged medicament and transports it into the feeding box. The manipulator presses the bagged medicament against the bag-opening knife inside the feeding box, so that the bag-opening knife cuts open the packaging bag of the bagged medicament, and then the medicament in the packaging bag drops into the feeding box. The medicament inside the feeding box drops into the medicament preparation device through the funnel-shaped part at the lower part of the feeding box. The medicament preparation device can be a common medicament preparation device. It can automatically obtain an appropriate amount of medicament from the feeding box according to needs and mix it with water to form a medicament with an appropriate ratio.

[0018] When using this PAM dosing device, only need to place the bagged medicament at the incoming material station, and the manipulator will automatically grab the packaging bag of the medicament and transport the medicament according to needs. It can also automatically release the medicament into the feeding box. The whole process does not require the operator to contact the medicament too much, avoiding harm to the human body caused by medicament dust. In addition, the two processes that are prone to generate dust, namely opening the packaging bag and pouring out the medicament, are carried out inside the closed feeding box, effectively avoiding the generation of dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required to be used in the embodiment will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic structural diagram of the PAM dosing device provided by the present invention;

[0021] Figure 2 It is a schematic diagram of the cooperation between the manipulator and the bagged medicament;

[0022] Figure 3 It is a top view of the manipulator;

[0023] Figure 4 It is a schematic diagram of the cooperation between the bag-opening knife and the feeding box;

[0024] Figure 5 Schematic diagram of the grasping needle.

[0025] Icons: 1 - medicament preparation device, 2 - feeding box, 21 - bag opening knife, 3 - manipulator, 31 - sliding part, 32 - lifting cylinder, 33 - track, 34 - mounting plate, 341 - sliding groove, 342 - connecting rod, 35 - sliding plate, 38 - grasping needle, 381 - anti-slip groove, 382 - air flow channel, 383 - air hole, 384 - air pipe, 39 - pushing plate, 391 - pushing spring, 392 - guiding rod, 4 - lifting platform, 5 - driving motor, 6 - driving screw, 7 - through hole, 8 - packaging bag collection station, 81 - packaging bag collection box, 9 - bagged medicament. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0028] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0030] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] As Figures 1-5 shown, the present invention provides a PAM dosing device, which includes a reagent preparation device 1 and a feeding device cooperating with the reagent preparation device 1. The reagent preparation device 1 can be a common reagent preparation device 1. It can automatically obtain an appropriate amount of reagent from the feeding tank 2 as needed and mix it with water to form a reagent with an appropriate ratio. The feeding device includes a feeding tank 2, a manipulator 3, and a feeding station. The feeding station is used to place the bagged reagent 9 to be added. The lower part of the feeding tank 2 is funnel-shaped and its lower end is connected to the feeding end of the reagent preparation device 1. The powdered reagent can be placed inside the feeding tank 2 and then fall to the reagent preparation device 1 through the funnel-shaped part. The manipulator 3 is arranged between the feeding tank 2 and the feeding station, so that the manipulator 3 reciprocates between the inside of the feeding tank 2 and the feeding station, and then transports the bagged reagent 9 to the feeding tank 2. The upper part of the feeding tank 2 is box-shaped, and an opening for the manipulator 3 to pass through is provided on one side close to the feeding station, which is convenient for the manipulator 3 to reciprocate between the inside of the feeding tank 2 and the feeding station. As Figure 4 shown, a bag-opening knife 21 is arranged inside the feeding tank 2. The bag-opening knife 21 is cross-shaped, and its four endpoints are connected to the four walls of the feeding tank 2. At the same time, the bag-opening knife 21 is located below the manipulator 3, so that when the manipulator 3 presses the bagged reagent 9 downward onto the bag-opening knife 21, the bag-opening knife 21 cuts the lower part of the packaging bag of the bagged reagent 9. Then, the reagent in the packaging bag leaks out through the cut and falls to the funnel part of the feeding tank 2 through the gap between the blades.

[0033] When the PAM dosing device of the present invention is in use, the bagged reagent is placed at the feeding station. Subsequently, the manipulator 3 moves to the bagged reagent 9, lifts the bagged reagent, and transports it inside the feeding tank 2. The manipulator 3 presses the bagged reagent 9 against the bag-opening knife 21 inside the feeding tank 2, so that the bag-opening knife 21 cuts the packaging bag of the bagged reagent 9, and then the reagent in the packaging bag falls inside the feeding tank 2. The reagent inside the feeding tank 2 falls into the reagent preparation device 1 through the funnel-shaped part at the lower part of the feeding tank 2.

[0034] When using this PAM dosing device, only the bagged chemical agent 9 needs to be placed at the incoming material station. The manipulator 3 will automatically grab the packaging bag of the chemical agent according to the need and transfer the chemical agent. It can also automatically release the chemical agent into the feeding box 2. The operator does not need to come into excessive contact with the chemical agent during the whole process, avoiding harm to the human body caused by chemical agent dust. In addition, the two processes that are prone to generate dust, namely, opening the packaging bag and pouring out the chemical agent, are carried out in the enclosed feeding box 2, effectively avoiding the generation of dust. It also avoids the chemical agent spilling onto the ground during the dosing process and causing the ground to be slippery.

[0035] In this embodiment, the manipulator 3 includes a sliding part 31, a lifting cylinder 32 and a grasping part. The sliding part 31 is slidably arranged on the track 33, and a corresponding motor is provided for driving. The combination of the sliding part 31, the track 33 and the motor is a conventional combination form of the manipulator 3, and the specific structure will not be described in detail in the specification. The grasping part is connected to the lower part of the sliding part 31 through the lifting cylinder 32, so that the grasping part follows the sliding part 31 to move and the grasping part rises and falls under the drive of the lifting cylinder 32. The bag-opening knife 21 is arranged below the manipulator 3, so that when the grasping part descends, the bag-opening knife 21 abuts against the lower part of the bagged chemical agent 9. As Figure 2 and 3 shown, the grasping part includes a mounting plate 34, a sliding plate 35, sliding blocks, sliders and grasping needles 38. The mounting plate 34 is connected to the lifting cylinder 32. One sliding plate 35 is slidably arranged at each end of the mounting plate 34, and the sliding directions of the two sliding plates 35 are both parallel to the length direction of the mounting plate 34. In order to ensure that the sliding of the sliding plate 35 along the mounting plate 34 is smoother, the mounting plate 34 is provided with a dovetail-shaped chute 341. At the same time, the sliding plate 35 is also provided with dovetail-shaped sliding blocks in cooperation with the chute 341. One slider is slidably arranged at each end of the sliding plate 35, and the sliding directions of the two sliders are both parallel to the length direction of the sliding plate 35. In order to ensure that the sliding of the slider along the sliding plate 35 is smoother, the sliding plate 35 is provided with a dovetail-shaped chute 341. At the same time, the slider is also provided with dovetail-shaped sliding blocks in cooperation with the chute 341. Each slider is provided with a grasping needle 38. The grasping needle 38 protrudes downward from the lower surface of the mounting plate 34, so that when the mounting plate 34 moves downward, the grasping needle 38 is inserted downward into the interior of the bagged chemical agent 9. Each sliding plate 35 and slider are provided with a driving device for driving their sliding.

[0036] When grasping the bagged medicine 9, the sliding part 31 slides above the incoming material station and controls the lifting cylinder 32 to descend, so that the grasping needle 38 moves downward and inserts into the packaging bag. The driving device is used to control the two sliding plates 35 to move away from each other and control the two sliders in each group to also move in the direction away from each other. This causes the four grasping needles 38 to spread out in all directions, thereby tightening the packaging bag. This also enables the tightened packaging bag to be stably hung on the grasping needles 38, thus facilitating the lifting and transfer of the bagged medicine 9 into the feeding box 2. Commonly, the packaging bag is generally a nylon bag, which has relatively high strength. The grasping needle 38 will not be torn due to the force during the process of spreading it open.

[0037] After the bagged medicine 9 is transported into the feeding box 2, the lifting cylinder 32 descends to press the bottom of the packaging bag against the bag opening knife 21, thereby cutting the lower part of the packaging bag. After the medicine in the packaging bag is poured out, there will inevitably be more residues inside. At this time, the two sliders in each group continue to maintain a tightened state, while the two sliding plates 35 move closer to each other and then move away quickly to be tightened. In this way, the packaging bag can be continuously vibrated strongly, thereby shaking off the medicine inside it.

[0038] After the medicine is shaken off completely, the sliding part 31 moves outside the feeding box 2, thereby sending out the empty packaging bag. The four grasping needles 38 gradually gather together, which can cause the packaging bag to loosen and fall off.

[0039] In this way, it is convenient to grasp the bagged medicine 9 and transfer it. It is also convenient to shake off the medicine in the packaging bag, avoiding the pollution of the environment by the residual medicine in the packaging bag and also avoiding the waste caused by the residue.

[0040] In order to facilitate the grasping of the bagged medicine 9, several bagged medicines 9 can be neatly placed at the incoming material station according to the placement requirements, or the tray carrying the bagged medicine 9 can be directly placed at the incoming material station through a forklift or other devices. It can be grasped through the accurate movement of the manipulator 3.

[0041] In this embodiment, the driving device includes a driving motor 5 and a driving screw 6. Threads are provided at both ends of the driving screw 6 and the directions of the threads at both ends of the driving screw 6 are opposite. The two sliding plates 35 are each threadedly connected to one end of a driving screw 6. The two sliders on each sliding plate 35 correspond to a set of driving devices and the two sliders are each threadedly connected to one end of a driving screw 6.

[0042] This structure causes the two sliders or sliding plates 35 connected to both ends to move in opposite directions when the driving screw 6 rotates. Thus, they move away from or close to each other.

[0043] In this embodiment, a chute 341 for the sliding plate 35 to slide is provided on the upper surface of the mounting plate 34. A chute 341 for the slider to slide is provided on the upper surface of the sliding plate 35. The grasping needle 38 passes through the sliding plate 35 and the mounting plate 34 and protrudes from the lower surface of the mounting plate 34. Both the mounting plate 34 and the sliding plate 35 are provided with through holes 7 for the grasping needle 38 to pass through. Such a setting enables components such as the sliding plate 35, the slider, the driving motor 5, and the driving screw 6 to be arranged on the upper surface of the mounting plate 34. The lower surface of the mounting plate 34 remains flat, thereby preventing various protruding components on the lower surface of the mounting plate 34 from pressing against the packaging bag when it fits against the packaging bag, so that the grasping needle 38 cannot be effectively inserted into the package. In order to mount the driving motor 5 and the driving screw 6 on the upper surface of the mounting plate 34, the upper surface of the mounting plate 34 is connected to the lifting motor through a plurality of connecting rods 342.

[0044] In this embodiment, a plurality of anti-slip grooves 381 are distributed along the length direction of the outer wall of the grasping needle 38. When the grasping needle 38 tightens the packaging bag, the packaging bag sinks into the anti-slip grooves 381, thereby preventing the packaging bag from slipping along the grasping needle 38 during the transfer of the packaged medicine 9.

[0045] In this embodiment, a push-back plate 39 is further provided below the mounting plate 34. A push-back spring 391 for pushing the push-back plate 39 away from the mounting plate 34 is provided between the push-back plate 39 and the mounting plate 34. The push-back plate 39 is also provided with a through hole 7 for the grasping needle 38 to pass through. When the mounting plate 34 moves downward, the push-back plate 39 first contacts the packaging bag. Continuing to press down, the push-back spring 391 is compressed, and the thrust of the push-back spring 391 on the push-back plate 39 flattens the upper surface of the packaged medicine 9, enabling the grasping needle 38 to be inserted more into the packaging bag. When the four grasping needles 38 release the packaging bag, the packaging bag may still be stuck inside the anti-slip grooves 381 and unable to fall from the grasping needles 38. At this time, the elastic force of the push-back spring 391 pushes the push-back plate 39, which in turn pushes the packaging bag to fall from the grasping needles 38. To ensure the lifting stability of the push-back plate 39, the push-back plate 39 is connected to the mounting plate 34 through four guide rods 392.

[0046] In this embodiment, an air flow channel 382 is provided inside the grasping needle 38. A plurality of air holes 383 communicating with the air flow channel 382 are provided on the outer wall of the grasping needle 38. The grasping needle 38 is also connected to an air pipe 384. During the process of shaking off the residual medicine in the packaging bag, high-speed air flows out of the air holes 383, thereby assisting in blowing off the residual medicine in the packaging bag.

[0047] In this embodiment, a packaging bag collection station 8 is further provided on one side of the opening of the feeding box 2. The upper part of the packaging bag collection station 8 is enclosed in a pipe shape by a baffle. A packaging bag collection box 81 is provided at the lower part of the packaging bag collection station 8. A suction fan is also provided inside the packaging bag collection station 8.

[0048] The packaging bag collection station 8 can conveniently collect the empty packaging bags. At the same time, the tubular shape of the packaging bag collection station 8 also prevents the small amount of medicine remaining in the packaging bag from drifting randomly. The exhaust fan can suck away the small amount of medicine in the packaging bag collection station 8 to prevent it from floating out. The packaging bag collection station 8 also isolates the large amount of dust generated inside the feeding box 2. If the dust in the feeding box 2 drifts towards the packaging bag collection station 8, it will also be sucked away by the exhaust fan. This better avoids dust raising. In order to better isolate the dust in the feeding box 2, a rubber curtain board is provided between the feeding box 2 and the packaging bag collection station 8. This enables the manipulator 3 to pass through smoothly and also isolates the packaging bag collection station 8 and the feeding box 2.

[0049] In this embodiment, a lifting table 4 is provided at the incoming material station. The bagged medicine 9 is placed above the lifting table 4. The lifting table 4 can gradually lift the medicine above it upwards to facilitate the grasping by the manipulator 3.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A PAM dosing device, characterized in that: It includes a medicament preparation device (1) and a feeding device cooperating with the medicament preparation device (1); the feeding device includes a feeding box (2), a manipulator (3) and a feeding station; the feeding station is used for placing the bagged medicament (9) to be added; the lower part of the feeding box (2) is funnel-shaped and its lower end is connected to the feeding end of the medicament preparation device (1); the manipulator (3) is arranged between the feeding box (2) and the feeding station, so that the manipulator (3) transfers the bagged medicament (9) to the feeding box (2); an opening for the manipulator (3) to pass through is arranged on one side of the feeding box (2) close to the feeding station; a bag-opening knife (21) is arranged inside the feeding box (2), so that when the manipulator (3) presses the bagged medicament (9) against the bag-opening knife (21), the bag-opening knife (21) cuts the lower part of the packaging bag of the bagged medicament (9). The manipulator (3) includes a sliding part (31), a lifting cylinder (32) and a grasping part; the sliding part (31) is slidably arranged on a track (33); the grasping part is connected to the lower part of the sliding part (31) through the lifting cylinder (32), so that the grasping part moves along with the sliding part (31) and the grasping part rises and falls under the drive of the lifting cylinder (32); the bag-opening knife (21) is arranged below the manipulator (3), so that when the grasping part descends, the bag-opening knife (21) abuts against the lower part of the bagged medicament (9). The grasping part includes a mounting plate (34), a sliding plate (35), sliding blocks, sliders and grasping needles (38); the mounting plate (34) is connected to the lifting cylinder (32); one sliding plate (35) is slidably arranged at each end of the mounting plate (34), and the sliding directions of the two sliding plates (35) are both parallel to the length direction of the mounting plate (34); one slider is slidably arranged at each end of the sliding plate (35), and the sliding directions of the two sliders are both parallel to the length direction of the sliding plate (35); each slider is provided with one grasping needle (38); the grasping needle (38) protrudes downward from the lower surface of the mounting plate (34), so that when the mounting plate (34) moves downward, the grasping needle (38) inserts downward into the interior of the bagged medicament (9); each sliding plate (35) and slider are provided with a driving device for driving its sliding, so that after the grasping needle (38) inserts downward into the interior of the bagged medicament (9), the two sliders in each group continue to maintain a tensioned state, and the two sliding plates (35) approach each other and then quickly move away and tighten, so that the packaging bag can be continuously vibrated.

2. The PAM dosing device according to claim 1, wherein: The driving device includes a driving motor (5) and a driving screw rod (6); both ends of the driving screw rod (6) are provided with threads and the directions of the threads at both ends of the driving screw rod (6) are opposite; each of the two sliding plates (35) is threadedly connected to one end of a corresponding driving screw rod (6); the two sliders on each sliding plate (35) correspond to a set of driving devices and each of the two sliders is threadedly connected to one end of a driving screw rod (6).

3. The PAM dosing device according to claim 2, characterized in that: The upper surface of the mounting plate (34) is provided with a chute (341) for the sliding plate (35) to slide; the upper surface of the sliding plate (35) is provided with a chute (341) for the slider to slide; the grasping needle (38) passes through the sliding plate (35) and the mounting plate (34) and protrudes from the lower surface of the mounting plate (34); both the mounting plate (34) and the sliding plate (35) are provided with through holes (7) for the grasping needle (38) to pass through.

4. The PAM dosing device according to claim 3, wherein: A number of anti-slip grooves (381) are distributed along the length direction of the outer wall of the grasping needle (38).

5. The PAM dosing device according to claim 4, wherein: A push plate (39) is further provided below the mounting plate (34); a push spring (391) for pushing the push plate (39) away from the mounting plate (34) is arranged between the push plate (39) and the mounting plate (34); the push plate (39) is also provided with a through hole (7) for the grasping needle (38) to pass through.

6. The PAM dosing device according to claim 5, wherein: An air flow channel (382) is arranged inside the grasping needle (38); a number of air holes (383) communicating with the air flow channel (382) are arranged on the outer wall of the grasping needle (38); the grasping needle (38) is further connected with an air pipe (384).

7. The PAM dosing device according to claim 6, wherein: On one side of the opening of the feeding box (2), a packaging bag collection station (8) is further provided; the upper part of the packaging bag collection station (8) is enclosed into a pipe shape by a baffle; a packaging bag collection box (81) is arranged at the lower part of the packaging bag collection station (8); a suction fan is further arranged inside the packaging bag collection station (8).

8. The PAM dosing device according to claim 7, wherein: A lifting platform (4) is arranged at the incoming material station; the bagged medicament (9) is placed above the lifting platform (4).

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