Online automatic dosing system

Abstract

The utility model relates to the field of chemical feeding devices, in particular to an on-line automatic chemical feeding system which comprises a feeding mechanism, an unpacking mechanism, a stirring machine and a conveying mechanism. The feeding mechanism is used for carrying bag bodies packaged with materials to the unpacking mechanism. The unpacking mechanism is used for unpacking the bag body and comprises a hopper and a bag breaking assembly; the bag breaking assembly comprises one or more saw blades horizontally arranged in the feeding opening. In the unpacking process, the bag body is placed on the saw blade through the feeding mechanism, downward pressure is applied to the bag body so that the saw blade can cut the lower bag face of the bag body, and unpacking is achieved. The stirrer is used for stirring materials; the feeding mechanism is used for conveying materials output by the stirrer into equipment to be added with chemicals; according to the system, full-mechanical operation is adopted to replace manual operation, so that operators can be prevented from contacting and breathing material dust, the efficiency is improved, and the health of the operators can be guaranteed.

Description

Technical Field

[0001] This application relates to the field of dosing devices, and more particularly to an online automatic dosing system. Background Technology

[0002] In some wastewater treatment processes, chemicals are often added for treatment, such as adding PAM material (hereinafter referred to as PAM material) into the PAM machine.

[0003] In related technologies, PAM materials are generally packaged in woven bags, and traditional PAM machine application still relies on manual operation. The specific steps are as follows:

[0004] First, workers manually remove the woven bags containing PAM material from the pallet, then move them to the PAM machine. Finally, workers manually cut open the woven bags with a cold knife and pour the material into a temporary storage bin. In this process, whether it is manually handling the PAM material or manually cutting open the woven bags, not only is the labor intensity high and the efficiency low, but workers are also prone to inhaling PAM material, which is detrimental to their health. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this application is to provide an online automatic dosing system.

[0006] To achieve the above objectives, this application provides the following technical solution.

[0007] An online automatic dosing system, the system comprising, in sequence along the operation steps, a feeding mechanism, an unpacking mechanism, a mixer, and a delivery mechanism;

[0008] The feeding mechanism is used to transport the bags containing the materials to the unpacking mechanism;

[0009] The unpacking mechanism is used to unpack the bag. The unpacking mechanism includes a hopper and a bag-breaking component. The hopper includes a feed inlet and a discharge inlet. The bag-breaking component includes one or more saw blades horizontally arranged in the feed inlet, with the saw teeth of the saw blades facing upwards. During unpacking, the bag is placed on the saw blades by the feed mechanism, and the bag is unpacked by applying downward pressure to the bag so that the saw blades can cut through the lower surface of the bag.

[0010] The mixer is used to receive the material output from the hopper's discharge port and to mix the material.

[0011] The feeding mechanism is used to transport the material output from the mixer to the equipment where the medicine is to be added.

[0012] As an optional embodiment of this application, the bag-breaking assembly includes two saw blades arranged in an X-shape.

[0013] As an optional implementation of this application, during unpacking, the bag is unpacked by applying downward pressure to the bag on the saw blade through the feeding mechanism.

[0014] As an optional embodiment of this application, the unpacking mechanism further includes a support frame and a vibrating component mounted on the hopper for driving the hopper to vibrate; the hopper is mounted on the support frame; wherein the hopper is at least vertically movable relative to the frame; and an elastic support member is provided between the hopper and the frame, the elastic support member being used to provide elastic force to support the hopper.

[0015] As an optional embodiment of this application, the elastic support includes a guide shaft and a spring. The guide shaft extends vertically and is fixed on the hopper. The guide shaft is movably inserted vertically through the support frame. The spring is sleeved on the guide shaft to support the hopper.

[0016] As an optional embodiment of this application, the support frame is provided with a mounting hole, and the guide shaft passes through the mounting hole vertically; wherein, the diameter of the mounting hole is larger than the diameter of the guide shaft, so that the guide shaft has space to move radially within the mounting hole.

[0017] As an optional embodiment of this application, a limiting mechanism is also installed between the support frame and the hopper, the limiting mechanism being used to limit the range of motion of the hopper in the vertical direction.

[0018] As an optional embodiment of this application, the mixer includes a housing, and a sandwich space is formed in the peripheral wall and / or bottom wall of the housing, and a heating unit is provided in the sandwich space.

[0019] As an optional embodiment of this application, the feeding mechanism includes a bolt conveyor.

[0020] As an optional implementation of this application, the system further includes a temporary storage station; the material is placed at the temporary storage station by a pallet for the feeding mechanism to grab and transport; the temporary storage station is also equipped with a vision detection unit, the vision detection unit includes a 3D camera, the 3D camera is used to capture the position information of the pallet and the bag on the pallet, and the feeding mechanism grabs the bag according to the position information.

[0021] Compared with the prior art, this application has the following advantages:

[0022] First, the system provided in this application adopts fully mechanized operation to replace manual operation. That is, the process of material feeding, unpacking and finally conveying to the equipment to be added is carried out autonomously. This can avoid workers coming into contact with or breathing material dust, which improves efficiency and protects the health of workers.

[0023] In addition, the system is equipped with a mixer, so that the material will be mixed by the mixer before entering the feeding mechanism after being unpacked, thereby breaking up the material and preventing it from clumping.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0025] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0026] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0027] Figure 1 A schematic diagram of the structure of this application is shown. Figure 1 ;

[0028] Figure 2 A schematic diagram of the structure of this application is shown. Figure 2 ;

[0029] Figure 3 A schematic diagram of the feeding mechanism of this application is shown;

[0030] Figure 4 This diagram shows the structure of the feeding mechanism of this application in the state of gripping the bag;

[0031] Figure 5 A schematic diagram of the gripper structure of this application is shown;

[0032] Figure 6 A schematic diagram of the gripper structure of this application is shown. Figure 1 (The grappling hook is in its initial state);

[0033] Figure 7 A schematic diagram of the gripper structure of this application is shown. Figure 2 (The hook is in a clamping state);

[0034] Figure 8 A schematic diagram of the unpacking mechanism of this application is shown;

[0035] Figure 9 It shows Figure 8 A magnified view of a portion of the middle hopper;

[0036] Figure 10 A partial exploded view of the unpacking mechanism of this application is shown;

[0037] Figure 11This diagram shows the structure of the gripper-assisted unpacking mechanism in the unpacking state.

[0038] Figure 12 A cross-sectional view of the mixer of this application is shown.

[0039] Explanation of the labels in the diagram:

[0040] N. Bag body;

[0041] 1. Feeding mechanism; 11. Robotic arm; 12. Gripper; 121. Base; 122. Hook assembly; 1221. Hook; 1221a. Puncture end; 1222. Rotary shaft; 123. Cylinder; 1231. Connecting rod; 124. Base plate; 1241. Displacement opening; 125. Elastic component; 1251. Guide rod; 1252. First spring; 1253. Limit block;

[0042] 2. Unpacking mechanism; 21. Hopper; 210. Vibrating motor; 211. First connecting lug; 22. Saw blade; 23. Support rod; 24. Support frame; 241. Second connecting lug; 25. Elastic support; 251. Guide shaft; 252. Second spring; 253. Limiting plate; 254. Limiting bolt;

[0043] 3. Mixer; 31. Casing; 311. Interlayer space; 32. Motor; 33. Mixing components;

[0044] 4. Screw conveyor;

[0045] 5. PAM machine;

[0046] 6. Visual inspection unit; 61. 3D camera; 62. Tray; 621. Edge guard. Detailed Implementation

[0047] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] Reference Figure 1-12 As shown, this embodiment provides an online automatic dosing system, which is mainly used for dosing PAM machine 5. That is, PAM material (hereinafter referred to as PAM material or material) is added to PAM machine 5. PAM material is mainly used in sewage treatment and is generally packaged in a bag N such as a woven bag.

[0049] Traditional PAM dosing processes rely heavily on manual labor. The entire process is not only labor-intensive and inefficient, but also exposes workers to PAM dust, which is detrimental to their health.

[0050] Based on this, this embodiment provides an online automatic dosing system (hereinafter referred to as the system), which enables the dosing process to be carried out mechanically and automatically. Specifically:

[0051] like Figure 1 As shown, the system includes, in sequence along the operation process, a feeding mechanism 1, an unpacking mechanism 2, a mixer 3, and a conveying mechanism. The following is a detailed description of each component.

[0052] The feeding mechanism 1 is used to transport the bag N containing the packaged material to the unpacking mechanism 2.

[0053] The structure of the feeding mechanism 1 is as follows:

[0054] like Figure 3 and Figure 4 As shown, the feeding mechanism 1 mainly includes a robotic arm 11 and a gripper 12. The gripper 12 is mounted on the robotic arm 11 and is mainly used to grip the bag containing the material. The robotic arm 11 is mainly used to drive the gripper 12 to move, and the robotic arm 11 moves the gripper 12 and the bag held by the gripper 12 to the unpacking mechanism 2.

[0055] The gripper 12 mainly includes a base 121, a hook assembly 122, and a drive component.

[0056] like Figure 5 As shown, the base 121 mainly serves as a carrier for mounting the claw assembly 122 and the drive components, and the upper part of the base 121 is mounted on the robotic arm 11. In some embodiments, the base 121 is generally rectangular in shape.

[0057] The hook assembly 122 includes two sets, which are spaced apart at the bottom of the base 121 along a first direction. The first direction can be understood as the length direction of the base 121, and the direction that is horizontal and perpendicular to the first direction is called the second direction. The second direction can also be understood as the width direction of the base 121.

[0058] The two sets of hook assemblies 122 have basically the same structure, so this embodiment will use one of them as an example for specific explanation:

[0059] like Figure 5 As shown, the hook assembly 122 includes a plurality of hooks 1221 arranged side by side in a second direction. For example, in this embodiment, the case where each hook assembly 122 uses 4 hooks 1221 is shown, and each hook 1221 has a basically the same structure.

[0060] Among them, the hook 1221 is basically U-shaped, with one end tapering to form a pointed tip as the puncture end 1221a. The puncture end 1221a is mainly used to puncture the upper surface of the bag.

[0061] All hooks 1221 can rotate around a rotation axis parallel to the second direction to release and clamp the bag. In some embodiments, the hook assembly 122 also includes a rotating shaft 1222 rotatably connected to the base 121. The rotating shaft 1222 extends along the second direction, and the central axis of the rotating shaft 1222 constitutes the rotation axis. All hooks 1221 in the same hook assembly 122 are fixed on the same rotating shaft 1222, and all hooks 1221 are rotated synchronously by the rotating shaft 1222. Specifically, the end of the hook 1221 away from the puncture end 1221a is fixed on the rotating shaft 1222.

[0062] When clamping, such as Figure 3 As shown, the entire gripper 12 moves to the upper side of the bag body, and then the hook 1221 flips. During the flipping process, the piercing end 1221a of the hook 1221 gradually pierces the upper surface of the bag body. As the flipping continues, a portion of the hook 1221 gradually inserts into the bag body, hooking the bag body from inside. At this time, it is equivalent to the hook 1221 supporting and hanging the upper surface of the bag body inside the bag body. Figure 4 The state shown.

[0063] Furthermore, in this embodiment, during operation, the hooks 1221 in the two sets of hook assemblies 122 rotate in opposite directions, that is, the two rotating shafts 1222 rotate in opposite directions. In this way, the two sets of hook assemblies 122 cooperate with each other to hook the entire bag body. Since the hooks 1221 on both sides face opposite directions, the bag body is not easy to fall off after being hooked.

[0064] The driving component is mainly used to drive the rotating shaft 1222 to rotate so as to drive the hook 1221 to flip. In some embodiments, each hook assembly 122 is provided with a corresponding driving component.

[0065] In some embodiments, the driving component may be a linearly extendable driving component, such as cylinder 123, hydraulic cylinder, electric cylinder, etc.; taking cylinder 123 as an example: Figure 5 As shown, the cylinder body of cylinder 123 is hinged to base 121 around an axis parallel to the second direction. A connecting rod 1231 is provided at the end of cylinder 123. One end of the connecting rod 1231 is fixed to the rotating shaft 1222, and the other end is hinged to the end of cylinder 123 around an axis parallel to the second direction. Thus, by the extension and retraction of cylinder 123, the connecting rod 1231 can be pushed to rotate, thereby driving the rotating shaft 1222 to rotate, so as to realize the rotation of hook 1221 and thus achieve the clamping of bag body.

[0066] As can be seen, the gripper 12 provided in this embodiment grips the upper part of the bag body, so the lower part of the bag body is basically exposed and unobstructed, which makes it easier to cut open the lower part of the bag body later to open the package. Opening the package can be understood as opening the bag body to take out the material inside the bag.

[0067] Since the empty bag remains hooked onto the hook 1221 even after unpacking, the bag is unlikely to fall off the hook 1221 even if it rotates in the opposite direction. Based on this, in some embodiments:

[0068] like Figure 6 and Figure 7 As shown, the gripper 12 also includes a base plate 124 disposed at the bottom of the base 121, the base plate 124 being disposed parallel to the base 121; in the vertical direction, a gap space is formed between the base 121 and the base plate 124 to serve as the installation space for the hook assembly 122.

[0069] In addition, the base plate 124 is provided with a clearance opening 1241 for each hook 1221 position to avoid the flipping of the hook 1221. In this embodiment, the clearance opening 1241 is basically a strip-shaped hole structure extending along the first direction. By setting the clearance opening 1241, when the hook 1221 is flipped, its piercing end 1221a can pass through the clearance opening 1241 to pass through the base plate 124 to hook the bag.

[0070] In the initial state, such as Figure 6 As shown, the hook 1221 is housed within the space, meaning the hook 1221 does not extend beyond the base plate 124 when in the clamping state; Figure 7 As shown, the hook 1221 extends at least partially from the relief opening 1241 to hook the bag body.

[0071] In actual use, the entire gripper 12 moves vertically downward. As the gripper 12 moves downward, the bottom plate 124 will first contact the bag surface. As the gripper 12 continues to move downward, the bottom plate 124 will press down on the upper bag surface of the bag body, thereby flattening and unfolding the upper bag surface of the bag body. When the gripper 12 moves down to the set position, it drives the hook 1221 to flip. The hook 1221 will then turn out through the clearance port 1241 and then penetrate into the bag body to achieve the gripping of the bag body.

[0072] After the bag is unpacked, when it is necessary to remove the empty bag from the hook 1221, the hook 1221 rotates in the opposite direction and gradually enters the initial state. During this process, the bottom plate 124 forms a block on the upper side of the bag to prevent the bag from moving with the hook 1221. In this way, the hook 1221 can be continuously pulled out of the bag, and the empty bag will fall down automatically.

[0073] In order for the bottom plate 124 to better press down on the bag containing the material, in some embodiments, such as Figure 6 As shown, the base plate 124 is vertically movable relative to the base 121. An elastic component 125 is provided between the base plate 124 and the base 121. The elastic component 125 is used to provide an elastic force to drive the base plate 124 to move vertically away from the base 121.

[0074] Specifically, the elastic component 125 includes a guide rod 1251, a first spring 1252, and a limiting block 1253. The guide rod 1251 is vertically movably inserted through the base 121, and the end of the guide rod 1251 away from the base 121 is fixed to the base plate 124. The first spring 1252 is sleeved on the guide rod 1251. The two ends of the first spring 1252 abut against the base plate 124 and the base 121, respectively. Of course, in some other embodiments, the two ends of the first spring 1252 may be fixed to the base plate 124 and the base 121, respectively.

[0075] The limiting block 1253 is fixed to the end of the guide rod 1251 away from the bottom to limit the guide rod 1251. In its natural state, such as Figure 6 As shown, under the push of the first spring 1252, the limiting block 1253 abuts against the base 121 to limit the bottom plate 124 from moving further away from the base 121 in the vertical direction.

[0076] As the entire gripper 12 moves downward, when the bottom plate 124 comes into contact with the upper bag surface of the bag, as the gripper 12 continues to move downward, the bottom plate 124, guided by the guide rod 1251, will gradually overcome the elastic force of the first spring 1252 to compress the spring. Consequently, the first spring 1252 will exert a pushing force on the bottom plate 124, pushing the pressure plate downward to press the upper bag surface of the bag, so as to flatten the upper bag surface of the bag.

[0077] In order to ensure that the hook 1221 can stably hold the bag body when hooking it, in some embodiments, the hook 1221 is specifically constructed such that, in the clamping state, as... Figure 7 As shown, the hook 1221 extends out of the inner wall of the base plate 124 (e.g. Figure 7The portion shown in section A is at least parallel to the base plate 124, meaning the inner wall of the portion of the hook 1221 located outside the base plate 124 is parallel to the base plate 124. At this time, the piercing end 1221a of the hook 1221 is basically horizontal. The reason for this arrangement is that, in the clamping state, the bag body is equivalent to the hook being below the hook 1221. If the piercing end 1221a of the hook 1221 is upturned, the bag body will be pulled down under the weight of the material inside the bag, making it easy for the upturned piercing end 1221a to pierce the upper surface of the bag body again from inside the bag body. Consequently, the bag body below the hook 1221 is likely to fall down. Conversely, if the piercing end 1221a of the hook 1221 is downturned, the bag body is likely to slip off the hook 1221, which is also not conducive to the stable clamping of the bag body.

[0078] In addition, in order to reduce the weight of the base plate 124, the base plate 124 has a hollow structure, that is, several through holes are opened on the base plate 124, and the weight of the base plate 124 is reduced by material reduction.

[0079] like Figure 1 and Figure 2 As shown, in order to enable the robotic arm 11 to automatically position and grasp materials, the system also includes a temporary storage station, which can be understood as an area set on one side of the robotic arm 11 for temporarily storing materials.

[0080] Generally, bags containing materials are stacked on pallets 62. When in use, the pallets 62 containing materials are moved to a temporary storage station. In order to position the pallets 62, a positioning mechanism is set on the floor of the temporary storage station. The positioning mechanism uses a three-sided baffle method for positioning. The three sides of the pallet 62 are positioned by the three baffles 621. During operation, the pallet 62 is pushed between the three baffles 621 by a manual pallet jack.

[0081] The temporary storage station is also equipped with a visual inspection unit 6, which includes a 3D camera 61. The 3D camera 61 is used to capture the position information of the tray 62 and the bags on the tray 62. The feeding mechanism 1 grasps the bags according to the position information. Specifically:

[0082] The 3D camera 61 takes a picture of the entire tray 62 to collect three-dimensional image information. The computer software performs 3D vision optimization calculations and sends the obtained woven bag grab coordinates to the robotic arm 11. The robotic arm 11 moves to the corresponding position according to the coordinates, and then grabs the woven bag with the gripper 12 and transfers it to the unpacking mechanism 2 for subsequent unpacking operations.

[0083] The specific structure of unpacking mechanism 2 is as follows:

[0084] The unpacking mechanism 2 is used to unpack the bag. Unpacking can be understood as opening the bag of the packaging material to allow the material inside the bag to flow out.

[0085] In this embodiment, as Figure 8 As shown, the unpacking mechanism 2 includes a hopper 21 and a bag-breaking assembly.

[0086] The hopper 21 is basically cone-shaped, with an opening at the top serving as a feeding port and an opening at the bottom serving as a discharging port. The material falls into the hopper 21 from the feeding port and then flows out from the discharging port.

[0087] The bag-breaking assembly is mainly used to break open the lower surface of the bag. The bag-breaking assembly includes one or more saw blades 22 horizontally arranged in the feed inlet, with the saw teeth of the saw blades 22 facing upwards. For example, in this embodiment... Figure 9 As shown, the bag-breaking assembly includes two saw blades 22, which are arranged in an X-shape and are both fixed to the hopper 21.

[0088] In addition, in order to support the saw blade 22, a number of support rods 23 located on the lower side of the saw blade 22 are fixedly connected inside the hopper 21.

[0089] When unpacking, such as Figure 11 As shown, the bag is placed on the saw blade 22 by the feeding mechanism 1. The bag is opened by applying downward pressure to the bag so that the saw blade 22 cuts through the lower surface of the bag. When the bag is pressed down, the lower surface of the bag will be gradually pierced by the saw teeth of the saw blade 22. Since the two saw blades 22 are arranged in an X-shape, the lower surface of the bag will be broken in an X-shape under the action of the two saw blades 22, so that the lower surface of the bag is basically completely broken. After the bag is broken, the material inside the bag can flow out under the action of gravity, for example, into the hopper 21, and finally out through the discharge port of the hopper 21.

[0090] In some embodiments, during unpacking, the bag can be unpacked by applying downward pressure to the bag on the saw blade 22 by the feeding mechanism 1. That is, after the robotic arm 11 moves the bag containing the material onto the saw blade 22, the robotic arm 11 presses down on the bag containing the material. During the pressing process, the elastic force of the first spring 1252 will push the bottom plate 124 to press down on the bag, so that the lower surface of the bag is pierced by the saw blade 22, thus achieving unpacking.

[0091] After unpacking, the material falls into hopper 21 and eventually flows out from the discharge port of hopper 21. Because the material (i.e., PAM material) has poor flowability, it easily clogs hopper 21 and is difficult to flow out smoothly. Therefore, in this embodiment, the unpacking mechanism 2 is further improved:

[0092] The unpacking mechanism 2 further includes a support frame 24 and a vibrating component mounted on the hopper 21 for driving the hopper 21 to vibrate, wherein, for example Figure 10 As shown, the vibrating component can be a vibrating motor 210, which is fixed on the lower outer wall of the hopper 21.

[0093] The hopper 21 is mounted on the support frame 24 and supported by the support frame 24.

[0094] To accommodate the vibration of the hopper 21, the hopper 21 is at least vertically movable relative to the frame; and an elastic support 25 is provided between the hopper 21 and the frame, the elastic support 25 being used to provide elastic force to support the hopper 21, wherein the elastic support 25 is preferably multiple sets, arranged sequentially along the circumference of the hopper 21; in some embodiments, the specific structure of the elastic support 25 is as follows:

[0095] like Figure 9 As shown, the elastic support 25 includes a guide shaft 251 and a second spring 252. The guide shaft 251 extends vertically and is fixed on the hopper 21. The guide shaft 251 is vertically movably inserted through the support frame 24. For example, a first connecting ear 211 is fixed on the outer peripheral wall of the hopper 21, and a second connecting ear 241 is fixed on the top side of the support frame 24. The guide shaft 251 is vertically movably inserted through the second connecting ear 241, and the upper end of the guide shaft 251 is fixed on the first connecting ear 211.

[0096] The second spring 252 is sleeved on the guide shaft 251, and the two ends of the second spring 252 abut or are fixed to the first connecting ear 211 and the second connecting ear 241 respectively, so as to support the hopper 21.

[0097] In order to ensure that the hopper 21 has room to move in the horizontal direction to cooperate with vibration, in some embodiments, the support frame 24 is provided with a mounting hole, for example, the mounting hole is provided on the second connecting lug 241; the guide shaft 251 passes through the mounting hole vertically; wherein, the diameter of the mounting hole is larger than the diameter of the guide shaft 251, so that the guide shaft 251 has space to move radially within the mounting hole, where radial can also be understood as the horizontal direction.

[0098] In addition, in order to limit the vertical range of motion of the hopper 21, a limiting mechanism is installed between the support frame 24 and the hopper 21. The limiting mechanism is used to limit the vertical range of motion of the hopper 21.

[0099] Specifically, such as Figure 9As shown, the limiting mechanism includes a limiting disc 253 and a limiting bolt 254. The limiting bolt 254 is vertically threaded onto the second connecting ear 241, with its upper end extending above the second connecting ear 241, serving as a limiting end to restrict the downward movement of the first connecting ear 211. The limiting disc 253 is fixed to the lower end of the guide shaft 251 and is located below the second connecting ear 241. At this time, the limiting bolt 254 is equivalent to the lower limit, while the limiting disc 253 serves as the upper limit, so that the hopper 21 can only move vertically within the range defined by the limiting bolt 254 and the limiting disc 253.

[0100] The specific structure of mixer 3 is as follows:

[0101] like Figure 11 As shown, the mixer 3 is used to receive the material output from the discharge port of the hopper 21 and to mix the material. That is, the feed port of the mixer 3 is connected to the discharge port of the hopper 21. Since the hopper 21 needs to vibrate, a flexible connection is required between the feed port of the mixer 3 and the discharge port of the hopper 21. For example, the two are connected by a flexible hose such as an accordion tube.

[0102] The reason for setting up mixer 3 is that PAM material is prone to moisture absorption and clumping. Mixing with mixer 3 can break up the clumped PAM material.

[0103] Among them, such as Figure 12 As shown, the mixer 3 mainly includes a housing 31, a stirring component 33 disposed inside the housing 31, and a motor 32 that drives the stirring component 33 to rotate. The stirring component 33 is driven to rotate by the motor 32, thereby realizing the stirring of the material inside the housing 31.

[0104] Based on the characteristic that PAM material is prone to moisture and condensation, in this embodiment, it is preferable to heat and keep the material in the mixer 3 at the same time as stirring, so as to keep the mixer 3 dry. For example, a double-layer space 311 is formed in the peripheral wall and / or bottom wall of the housing 31, and a heating unit is provided in the double-layer space 311. For example, the heating unit is filled with heat-conducting oil in the double-layer space 311, and the heat-conducting oil is heated by electric heating elements, thereby using the temperature of the heat-conducting oil to heat the inner wall of the housing 31 to achieve drying.

[0105] The specific structure of the feeding mechanism is as follows:

[0106] like Figure 2 and Figure 8 As shown, the feeding mechanism is used to transport the material output from the mixer 3 to the equipment to be dosed (e.g., PAM machine 5). In some embodiments, the feeding mechanism is preferably a screw conveyor 4, the inlet of which is connected to the outlet of the mixer 3, and the outlet of which extends to the dosing port of the PAM machine 5.

[0107] In addition, in order to keep the inside of the screw conveyor 4 dry, it is preferable to install a heating element in the casing 31 of the screw conveyor.

[0108] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0109] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0110] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An on-line automatic dosing system, characterized in that, The system includes, in sequence along the work process, a feeding mechanism, an unpacking mechanism, a mixer, and a conveying mechanism; The feeding mechanism is used to transport the bags containing the materials to the unpacking mechanism; The unpacking mechanism is used to unpack the bag. The unpacking mechanism includes a hopper and a bag-breaking assembly. The hopper includes a feed inlet and a discharge inlet. The bag-breaking assembly includes two horizontally arranged saw blades in the feed inlet. The two saw blades are arranged in an X-shape and are fixed to the hopper. The saw teeth of the saw blades face upward. During unpacking, the bag is placed on the saw blades by the feed mechanism. The bag is unpacked by applying downward pressure to the bag so that the saw blades can cut through the lower surface of the bag. The mixer is used to receive the material output from the hopper's discharge port and to mix the material. The feeding mechanism is used to transport the material output from the mixer to the equipment where the medicine is to be added.

2. An on-line automatic dosing system according to claim 1, characterized in that, During unpacking, the bag is unpacked by applying downward pressure to the bag on the saw blade through the feeding mechanism.

3. The on-line automatic dosing system according to claim 1, characterized in that, The unpacking mechanism further includes a support frame and a vibrating component mounted on the hopper for driving the hopper to vibrate; the hopper is mounted on the support frame; wherein the hopper is at least able to move vertically relative to the frame; and an elastic support is provided between the hopper and the frame, the elastic support being used to provide elastic force to support the hopper.

4. An on-line automatic dosing system according to claim 3, characterized in that, The elastic support includes a guide shaft and a spring. The guide shaft extends vertically and is fixed on the hopper. The guide shaft is movably inserted vertically through the support frame. The spring is sleeved on the guide shaft to support the hopper.

5. An on-line automatic dosing system according to claim 4, characterized in that, The support frame is provided with mounting holes, and the guide shaft passes through the mounting holes vertically; wherein the diameter of the mounting holes is larger than the diameter of the guide shaft, so that the guide shaft has space to move radially within the mounting holes.

6. An on-line automatic dosing system according to claim 3, characterized in that, A limiting mechanism is also installed between the support frame and the hopper, which is used to limit the range of motion of the hopper in the vertical direction.

7. The online automatic dosing system according to claim 1, characterized in that, The mixer includes a casing, and a sandwich space is formed in the peripheral wall and / or bottom wall of the casing, and a heating unit is provided in the sandwich space.

8. The online automatic dosing system according to claim 1, characterized in that, The feeding mechanism includes a bolt conveyor.

9. The on-line automatic dosing system according to claim 1, characterized in that, The system also includes a temporary storage station; the material is placed at the temporary storage station by a pallet for the feeding mechanism to grab and transport; the temporary storage station is also equipped with a vision detection unit, which includes a 3D camera. The 3D camera is used to capture the position information of the pallet and the bags on the pallet, and the feeding mechanism grabs the bags according to the position information.

Images