Quantitative material adding device and adding system

Abstract

The invention provides a quantitative material adding device and system. The quantitative material adding device comprises a stock bin, wherein a discharging barrel is arranged at the bottom end of the stock bin; the rotating shaft is vertically and rotatably arranged in the stock bin; the paddle assembly is detachably arranged on the rotating shaft, the paddle assembly comprises at least one dispersing paddle and at least one gathering paddle, the dispersing paddle is used for dispersing materials in the stock bin, and the gathering paddle is used for gathering the materials in the stock bin; the feeding screw rod is detachably arranged at the bottom end of the rotating shaft, and the bottom end of the feeding screw rod extends into the discharging barrel; and the driving mechanism is in transmission connection with the rotating shaft, and the driving mechanism is used for driving the paddle assembly and the feeding screw rod to rotate so as to push the materials into the discharging barrel to be discharged. Through the synergistic effect of the scattering blades and the polymerization blades, the bridging and caking phenomena generated by accumulation of materials at the bottom of the stock bin are broken, the device is prevented from being blocked, continuous and uniform discharging is achieved, and the material adding efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of material addition technology, and in particular to a material quantitative addition device and addition system. Background Technology

[0002] In production activities, material adding devices are usually needed to add materials. The adding method is usually based on the material's own gravity combined with the valve control of the switch to add and output materials.

[0003] In existing technologies, the addition of materials relies on manual operation. Operators manually add materials periodically, which is not only labor-intensive, but also makes it difficult to accurately control the frequency and dosage of material addition. In addition, relying solely on the gravity of the material for addition and output can easily cause the material to form "bridging" clumps at the bottom of the silo, resulting in poor material output and even blockage of the addition pipeline, leading to uneven material feeding. Summary of the Invention

[0004] This application provides a material quantitative addition device and system, which avoids blockage in the addition pipeline, achieves continuous and uniform feeding, and improves material addition efficiency.

[0005] To achieve the above-mentioned objectives, this application adopts the following approach:

[0006] In a first aspect, this application provides a material quantitative addition device, comprising:

[0007] The hopper has a discharge cylinder at its bottom.

[0008] A rotating shaft, which is vertically rotatable within the hopper;

[0009] A blade assembly is detachably mounted on the rotating shaft. The blade assembly includes at least one dispersing blade and at least one converging blade. The dispersing blade is used to disperse the material in the hopper, and the converging blade is used to collect the material in the hopper.

[0010] A feeding screw, which is detachably mounted at the bottom end of the rotating shaft, with the bottom end of the feeding screw extending into the discharge cylinder;

[0011] A drive mechanism is connected to the rotating shaft and is used to drive the paddle assembly and the feeding screw to rotate so as to push the material into the discharge cylinder for discharge.

[0012] In one possible implementation, both the spreading blade and the converging blade have an angle with the rotation axis;

[0013] The angle between the spreading blade and the rotating shaft is not less than the angle between the converging blade and the rotating shaft.

[0014] In one possible implementation, the blade assembly further includes:

[0015] Mounting base, which is detachably mounted on the rotating shaft;

[0016] Both the dispersing blade and the aggregating blade are movably mounted on the mounting base, and the dispersing blade and the aggregating blade are offset along the axial direction of the rotation axis.

[0017] In one possible implementation, the blade assembly further includes:

[0018] A first angle adjustment component is disposed on the mounting base and is used to adjust the angle between one of the spreading blades and the converging blades.

[0019] A second angle adjustment component is disposed on the mounting base and is used to adjust the angle between the diverging blade and the converging blade.

[0020] A material distribution sensor is installed inside the silo.

[0021] Angle sensors are respectively provided on the spreading blades and the converging blades.

[0022] In one possible implementation, the feeding screw includes a variable screw diameter section and a constant screw diameter section, wherein the variable screw diameter section and the constant screw diameter section are connected axially along the feeding screw.

[0023] The variable diameter section is detachably connected to the rotating shaft, and the constant diameter section extends into the discharge cylinder.

[0024] In one possible implementation, the screw diameter of the variable screw diameter section is not less than the screw diameter of the constant screw diameter section, and the screw diameter of the variable screw diameter section gradually decreases from the side closer to the rotating shaft to the side closer to the discharge cylinder.

[0025] In one possible implementation, it also includes:

[0026] A base, wherein the base is disposed on one side of the hopper;

[0027] A fixing frame is mounted on the base, the fixing frame has an opening, and the hopper is located within the opening;

[0028] At least one weighing component is disposed at the top of the fixed frame, and the weighing component is connected to the hopper via a positioning plate.

[0029] In one possible implementation, the hopper is provided with a feed inlet, and a baffle is rotatably provided on the feed inlet;

[0030] The discharge end of the discharge cylinder is equipped with a discharge locking tongue.

[0031] Secondly, this application provides a material metering system, including the material metering device described in any of the above claims, and

[0032] A mixing tank is provided at the discharge end of the discharge cylinder, and a differential pressure transmitter is provided at the bottom of the mixing tank.

[0033] A stirring shaft is rotatably disposed inside the mixing tank;

[0034] A power source is connected to the stirring shaft via a transmission, and the power source is used to drive the stirring shaft to rotate;

[0035] A pneumatic regulating valve, one end of which is connected to the mixing tank and the other end of which is connected to the liquid storage device;

[0036] A drain valve is provided at the lower end of the mixing tank;

[0037] The control device is electrically connected to the blade assembly, drive mechanism, weighing assembly, differential pressure transmitter, power source, pneumatic regulating valve and drain valve respectively.

[0038] In one possible implementation, the control device includes:

[0039] A control box, wherein a controller is provided inside the control box, and a user interface is provided on one outer surface of the control box, and the controller is electrically connected to the user interface.

[0040] The material quantitative addition device of this application drives the dispersing blades, the agglomerating blades, and the feeding screw to rotate via a rotating shaft. The dispersing blades disperse the material accumulated at the bottom of the silo to the surrounding areas, the agglomerating blades push the material on the inner wall of the silo towards the center, and the feeding screw outputs the material from the silo. Through the synergistic action of the dispersing blades and the agglomerating blades, the "bridging" and clumping phenomenon caused by the accumulation of material at the bottom of the silo is broken, preventing voids in the central area of ​​the silo, maintaining a uniform distribution of material at the bottom of the silo, forming a continuous material flow channel, avoiding blockage of the device's addition pipeline, achieving continuous and uniform feeding, and improving material addition efficiency. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0042] Figure 1 This is a schematic diagram of the material quantitative addition device in one embodiment of this application;

[0043] Figure 2 This is a side view of a material metering device in one embodiment of this application;

[0044] Figure 3 This is a top view of a quantitative addition device in one embodiment of this application;

[0045] Figure 4 This is a schematic diagram of the feeding screw in one embodiment of this application;

[0046] Figure 5 This is a schematic diagram of the weighing component in one embodiment of this application;

[0047] Figure 6 This is a schematic diagram of the material quantitative addition system in one embodiment of this application;

[0048] Figure 7 For this application Figure 6 Cross-sectional view of the material quantitative addition device.

[0049] Explanation of reference numerals in the attached figures:

[0050] 100. Hopper; 101. Discharge cylinder; 102. Inlet; 103. Baffle cover; 104. Discharge lock tongue; 105. Hopper; 106. Viewing window cover; 200. Rotating shaft; 300. Paddle assembly; 301. Spreading paddle; 302. Converging paddle; 303. Mounting base; 400. Feeding screw; 401. Variable screw diameter section; 402. Constant screw diameter section; 500. Drive mechanism; 600. Base; 601. Fixing frame; 700. Weighing assembly; 701. Positioning plate; 800. Mixing tank; 801. Mixing shaft; 802. Power source; 803. Pneumatic regulating valve; 804. Drain valve. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0052] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The following will be combined with the appendix... Figure 1-7 The embodiments of this application will be described below.

[0053] This application provides a material quantitative addition device, see [link to relevant documentation]. Figure 1 and Figure 7 The material metering device includes: a hopper 100, a rotating shaft 200, a paddle assembly 300, a feeding screw 400, and a drive mechanism 500. The bottom end of the hopper 100 is connected to a vertically oriented discharge cylinder 101. The rotating shaft 200 is rotatably mounted within the hopper 100, and is coaxial with the discharge cylinder 101. The feeding screw 400 is detachably mounted on the bottom end of the rotating shaft 200. The feeding screw 400 is coaxial with the discharge cylinder 101, and its bottom end extends into the discharge cylinder 101. The screw diameter of the portion of the feeding screw 400 extending into the discharge cylinder 101 is equal to the diameter of the discharge cylinder 101. The blade assembly 300 is detachably mounted on the rotating shaft 200 and includes at least one dispersing blade 301 and at least one aggregating blade 302. The dispersing blade 301 is used to disperse the material accumulated in the hopper 100, and the aggregating blade 302 is used to collect the material dispersed on the inner wall of the hopper 100. The drive mechanism 500 is mounted on the top of the hopper 100 and the power output end of the drive mechanism 500 is connected to the top of the rotating shaft 200. The drive mechanism 500 is used to drive the blade assembly 300 and the feeding screw 400 to rotate, pushing the material in the hopper 100 into the discharge cylinder 101 and discharging it through the discharge cylinder 101.

[0054] In this embodiment, an appropriate amount of material is pre-loaded into the hopper 100. The rotating shaft 200 is driven to rotate by the drive mechanism 500. The rotating shaft 200 drives the paddle assembly 300 and the feeding screw 400 to rotate. The feeding screw 400 gradually transports the material in the hopper 100 to the discharge cylinder 101, and then continues to transport it to the next process through the discharge cylinder 101.

[0055] The rotating shaft 200 drives the blade assembly 300 to rotate, causing the dispersing blade 301 and the aggregating blade 302 to rotate around the rotating shaft 200. The dispersing blade 301 disperses the material accumulated at the bottom of the hopper 100 to the surrounding area, preventing the material from bridging and clumping due to accumulation. The aggregating blade 302 gathers the material near the inner wall of the hopper 100 towards the center of the hopper 100, preventing the formation of a void in the center that could interrupt unloading. Through the synergistic effect of the dispersing blade 301 and the aggregating blade 302, the material in the hopper 100 can be kept evenly distributed. When the feeding screw 400 feeds, a continuous material flow channel is formed, preventing blockages in the hopper 100 and the discharge cylinder 101, and achieving continuous and uniform feeding.

[0056] It is understandable that the output speed of the material is positively correlated with the rotational speed of the feed screw 400.

[0057] In some embodiments, see Figure 1 , Figure 2 and Figure 5 The material metering device also includes a hopper 105, which is located at the bottom of the silo 100, and a discharge cylinder 101 is located at the bottom of the hopper 105. This allows for convenient conveying of materials from the silo 100 to the discharge cylinder 101 via the hopper 105, achieving continuous feeding.

[0058] It should be noted that the hopper 105 has a funnel-shaped cross-section, with the open end of the hopper 105 connected to the hopper 100 and the closed end of the hopper 105 connected to the discharge cylinder 101.

[0059] Understandably, the material added to the hopper 100 accumulates in the hopper 105. The spreading blades 301 rotate to disperse the material in the hopper 100 and hopper 105 to the surrounding areas, while the converging blades 302 gather the material near the inner wall of the hopper 105 towards the center of the hopper 105, thus avoiding the formation of a void in the center that would cause the unloading to be interrupted, and achieving continuous and uniform feeding.

[0060] In some embodiments, see Figure 7 Both the dispersing blade 301 and the agglomerating blade 302 have an angle with the rotating shaft 200, and the angle between the dispersing blade 301 and the rotating shaft 200 is not less than the angle between the agglomerating blade 302 and the rotating shaft 200. This enhances the synergistic effect of the dispersing blade 301 and the agglomerating blade 302, improves the continuous flow of materials within the silo 100, and further prevents blockages within the device.

[0061] It should be noted that the angle between the spreading blade 301 and the rotating shaft 200 is the tilt angle of the spreading blade 301, and the angle between the converging blade 302 and the rotating shaft 200 is the tilt angle of the converging blade 302.

[0062] In one possible implementation, the angle between the spreading blade 301 and the rotating shaft 200 can be 30 to 60 degrees, and the angle between the converging blade 302 and the rotating shaft 200 can be 10 to 30 degrees.

[0063] In this embodiment, the larger tilt angle of the dispersing blade 301 allows the dispersing blade 301 to exert a greater dispersing force on the material when rotating, thereby improving the efficiency of agglomeration breaking. The smaller tilt angle of the polymerization blade 302 allows the polymerization blade 302 to generate a gentle pushing force on the material near the inner wall of the hopper 105, thereby reducing disturbance to the central area.

[0064] The difference in tilt angle between the dispersing blade 301 and the agglomerating blade 302 creates a gradient dispersion-agglomeration effect, which ensures that the material flows continuously and uniformly in the hopper 100 and the bin 105, preventing blockages in the device.

[0065] In some embodiments, see Figure 1 and Figure 7 Both the dispersing blade 301 and the converging blade 302 can be plate-shaped structures, or both can be frame structures, or one can be a plate-shaped structure and the other a frame structure. This allows for convenient movement of materials.

[0066] For example, the dispersing blade 301 has a frame structure, and the agglomerating blade 302 has a plate-like structure. Thus, the rotating shaft 200 drives both the dispersing blade 301 and the agglomerating blade 302 to rotate. When the dispersing blade 301 breaks up agglomerates, it increases the pressure at the contact surface between the dispersing blade 301 and the agglomerates, improving the agglomeration breaking efficiency. When the agglomerating blade 302 pushes the material, it increases the pushing range of the agglomerating blade 302, improving the material's agglomeration efficiency.

[0067] In one possible implementation, at least one of the spreading blade 301 and the converging blade 302 can deflect to one side. It should be noted that the deflection directions of the spreading blade 301 and the converging blade 302 can be the same or different, and the deflection angles of the spreading blade 301 and the converging blade 302 can be the same or different. For example, the spreading blade 301 and the converging blade 302 can both deflect clockwise, or both deflect counterclockwise, or one can deflect clockwise and the other counterclockwise.

[0068] In some embodiments, see Figure 7The blade assembly 300 also includes a mounting base 303, which is detachably mounted on the rotating shaft 200. Both the spreading blade 301 and the converging blade 302 are movably mounted on the mounting base 303, and are offset from each other along the axial direction of the rotating shaft 200. This allows for quick installation of the blade assembly 300.

[0069] In one possible implementation, the number of both the spreading blade 301 and the converging blade 302 can be one or more. It should be noted that one spreading blade 301 and one converging blade 302 constitute a set of blades, and adjacent sets of blades are installed at intervals on the rotating shaft 200.

[0070] In one possible implementation, the spreading blade 301 and the converging blade 302 can be located on the same side of the rotating shaft 200, or they can be located on different sides of the rotating shaft 200.

[0071] In one possible implementation, the mounting base 303 is connected to the rotating shaft 200 by bolts.

[0072] In some embodiments, the paddle assembly 300 further includes a first angle adjustment component, a second angle adjustment component, and a material distribution sensor. The first angle adjustment component is mounted on the mounting base 303 and is used to adjust the angle of one of the dispersing paddle 301 and the agglomerating paddle 302. The second angle adjustment component is mounted on the mounting base 303 and is used to adjust the angle of the other of the dispersing paddle 301 and the agglomerating paddle 302. The material distribution sensor is located inside the hopper 100, and angle sensors are respectively provided on the dispersing paddle 301 and the agglomerating paddle 302. In this way, the tilt angle of the dispersing paddle 301 and the agglomerating paddle 302 can be adjusted to adapt to different material characteristics, improving the environmental adaptability and long-term operational stability of the device.

[0073] In one possible implementation, a first angle adjustment component is used to adjust the tilt angle of the spreading blade 301, and a second angle adjustment component is used to adjust the tilt angle of the converging blade 302.

[0074] In one possible implementation, both the first angle adjustment component and the second angle adjustment component can be electrically driven rotating mechanisms, which may include servo motors and gear transmission mechanisms.

[0075] It should be noted that the servo motor and gear transmission mechanism are mounted on the mounting base 303. The power input end of the gear transmission mechanism is connected to the output end of the servo motor, and the spreading blade 301 or the converging blade 302 is connected to the power output end of the gear transmission mechanism. In this way, the servo motor provides power, and the gear transmission mechanism transmits the power, driving the spreading blade 301 or the converging blade 302 to rotate in the vertical plane, thereby adjusting the tilt angle of the spreading blade 301 or the converging blade 302.

[0076] Of course, the electric rotating mechanism can also be driven directly by a servo motor to rotate the spreading blade 301 or the converging blade 302 to adjust the tilt angle of the spreading blade 301 or the converging blade 302.

[0077] In one possible implementation, a material distribution sensor is used to detect the accumulation state of materials in the silo 100 and hopper 105. The material distribution sensor can be an array infrared sensor or a distributed pressure sensor.

[0078] With this setup, the material distribution sensor detects the accumulation state of materials in the hopper 100 and the bin 105 in real time, and the first angle adjustment component and the second angle adjustment component dynamically adjust the tilt angle of the dispersing blade 301 and the agglomerating blade 302 according to the detection data of the material distribution sensor.

[0079] In some embodiments, see Figure 4 The feeding screw 400 includes a variable diameter section 401 and a constant diameter section 402. The variable diameter section 401 and the constant diameter section 402 are connected axially along the feeding screw 400. The variable diameter section 401 is detachably connected to the rotating shaft 200, and the constant diameter section 402 extends into the discharge cylinder 101. This allows for continuous and stable feeding by the feeding screw 400, improving the accuracy and reliability of material addition.

[0080] It should be noted that the variable screw diameter section 401 achieves initial compression and degassing of the material by gradually reducing the screw diameter, thereby reducing air impurities in the material. The constant screw diameter section 402 continues to compress the material during the material conveying process, improving the material density and stability during the material conveying process, and thus improving the accuracy and reliability of material addition.

[0081] In one possible implementation, the variable diameter section 401 and the rotating shaft 200 can be connected by bolts, pins, or other means.

[0082] In some embodiments, see Figure 4The screw diameter of the variable screw diameter section 401 is not less than that of the constant screw diameter section 402, and the screw diameter of the variable screw diameter section 401 gradually decreases from the side closer to the rotating shaft 200 to the side closer to the discharge cylinder 101. In this way, the compression and venting efficiency of the material can be improved, and the stability of the feeding screw 400 can be further improved.

[0083] It is understandable that the screw diameter of the variable screw diameter section 401 gradually decreases from the hopper 100 side to the discharge cylinder 101 side, so that the material is subjected to less pressure on the hopper 100 side, gradually transitioning to being subjected to greater pressure on the discharge cylinder 101 side, and then transitioning to the stable conveying of the constant screw diameter section 402, thereby reducing the initial compression resistance of the material and improving the compression effect of the material.

[0084] It should be noted that the pitch of the feed screw 400 remains unchanged.

[0085] In some embodiments, the feeding screw 400 may include a variable pitch section and a constant pitch section, which are connected axially along the feeding screw 400. The variable pitch section is detachably connected to the rotating shaft 200, and the constant pitch section extends into the discharge cylinder 101. The pitch of the variable pitch section is not less than the pitch of the constant pitch section 402, and the pitch of the variable pitch section gradually decreases from the hopper 100 side to the discharge cylinder 101 side. This improves the compression and venting efficiency of the material, further enhances the stability of the feeding screw 400, and improves the accuracy and reliability of material addition.

[0086] It should be noted that the screw diameter of the feed screw 400 remains unchanged.

[0087] In one possible implementation, the feeding screw 400 may include a variable screw diameter section 401 and a constant screw diameter section 402, as well as a variable pitch section and a constant pitch section. The variable screw diameter section 401 may also be a variable pitch section, and the constant screw diameter section 402 may also be a constant pitch section.

[0088] In some embodiments, see Figure 7 The drive mechanism 500 may include a gear reducer and a power motor. The gear reducer is located at the top of the hopper 100, and the power output end of the gear reducer is connected to the top of the rotating shaft 200. The output end of the power motor is connected to the power input end of the gear reducer.

[0089] In some embodiments, see Figure 2 and Figure 7 The hopper 100 may include a cylinder and a pressure cover. The pressure cover is fixedly installed at the top of the cylinder by bolts, the hopper 105 is fixedly installed at the bottom of the cylinder by bolts, and the drive mechanism 500 is installed at the top of the pressure cover.

[0090] In one possible implementation, see Figure 3The pressure cap has a viewing window that communicates with the cylinder body, and the viewing window is covered with a transparent viewing window cover 106. This allows operators to easily observe the status of the material inside the hopper 100.

[0091] In some embodiments, see Figure 1 , Figure 2 and Figure 7 The material metering device further includes a base 600, a fixing frame 601, and at least one weighing component 700. The base 600 is disposed on one side of the hopper 100, the fixing frame 601 is disposed on the base 600, the fixing frame 601 has an opening, and the hopper 100 is located within the opening. The weighing component 700 is disposed on the top of the fixing frame 601 and is connected to the hopper 100 via a positioning plate 701. This allows for real-time and accurate detection of the remaining material in the hopper 100.

[0092] In one possible implementation, the weighing component 700 can be a weighing sensor.

[0093] In one possible implementation, there can be multiple weighing components 700, which are evenly arranged on the top of the fixing frame 601 along the circumference of the hopper 100. Each weighing component 700 is connected to the circumferential outer wall of the hopper 100 via a positioning plate 701. This improves the accuracy of the weighing components 700.

[0094] In some embodiments, see Figure 1 and Figure 7 The hopper 100 is provided with a feed inlet 102, and a baffle 103 is rotatably mounted on the feed inlet 102. In this way, material is added into the hopper 100 through the feed inlet 102, and the feed inlet 102 is closed by the baffle 103, so as to prevent the material in the hopper 100 from jumping out of the feed inlet 102 when the spreading blade 301 and the aggregating blade 302 are rotating.

[0095] In one possible implementation, the free end of the cover 103 can be snapped into the feed port 102.

[0096] In some embodiments, see Figure 1 and Figure 7 The discharge end of the discharge cylinder 101 is equipped with a discharge locking tongue 104. In this way, the discharge cylinder 101 can be blocked when the device is not discharging material, so as to prevent material from leaking out of the discharge cylinder 101.

[0097] In one possible implementation, the unloading latch 104 may include a mounting frame, which is fixedly mounted on the discharge cylinder 101. A rotating rod is rotatably mounted on the mounting frame, with both ends of the rotating rod fixedly connected to a sealing plate. The sealing plate is used to close the discharge port of the discharge cylinder 101. A coil spring is sleeved on the rotating rod, with one end of the coil spring connected to the rotating rod and the other end of the coil spring connected to the mounting frame.

[0098] It should be noted that, initially, the unloading latch 104 closes the outlet of the discharge cylinder 101. When the feeding screw 400 starts working, its rotation conveys the material downwards along the discharge cylinder 101. The material exerts a downward force on the unloading latch 104, causing it to open the outlet of the discharge cylinder 101, allowing the material to exit from the outlet. When the feeding screw 400 stops working, the material stops exerting force on the unloading latch 104, and the unloading latch 104 returns to its initial state, re-closing the outlet of the discharge cylinder 101.

[0099] In addition, embodiments of this application also provide a material quantitative addition system, see [link to relevant documentation]. Figure 6 and Figure 7 The system includes the material metering device described in any of the above embodiments, as well as a mixing tank 800, a mixing shaft 801, a power source 802, a pneumatic regulating valve 803, a drain valve 804, and a control device. The mixing tank 800 is located at the discharge end of the discharge cylinder 101, and the inlet of the mixing tank 800 is connected to the outlet of the discharge cylinder 101. A differential pressure transmitter is installed at the bottom of the mixing tank 800. A mixing shaft 801 is rotatably installed inside the mixing tank 800, and one end of the mixing shaft 801 extends out of the mixing tank 800 and the power source. The output end of 802 is connected to the drive, and the stirring shaft 801 is driven to rotate by the power source 802 to stir the solution in the stirring tank 800. The liquid inlet of the stirring tank 800 is connected to the liquid storage device through the pneumatic regulating valve 803. The liquid outlet of the stirring tank 800 is connected to the drain valve 804. The control device is electrically connected to the paddle assembly 300, drive mechanism 500, weighing assembly 700 in the material quantitative addition device, as well as the differential pressure transmitter, power source 802, pneumatic regulating valve 803 and drain valve 804.

[0100] In this embodiment, the liquid level and solution concentration in the mixing tank 800 are preset. Based on these parameters, the rotational speed of the feeding screw 400 and the initial opening of the pneumatic regulating valve 803 are set to determine the output rate of the material and liquid. The feeding screw 400 is driven to rotate by the drive mechanism 500, conveying material into the mixing tank 800. Liquid is conveyed into the mixing tank 800 via the pneumatic regulating valve 803. The stirring shaft 801 is driven to rotate by the power source 802, stirring the mixed liquid in the mixing tank 800 to ensure thorough mixing of the material and liquid. The liquid level in the mixing tank 800 is monitored in real time by a differential pressure transmitter. When the liquid level in the mixing tank 800 reaches a preset height, the solution concentration in the mixing tank 800 also reaches a preset concentration. At this point, the solution in the mixing tank 800 is conveyed to the next process via the drain valve 804. When the liquid level in the mixing tank 800 is lower than the preset liquid level height, the control device increases the opening of the pneumatic regulating valve 803. When the liquid level in the mixing tank 800 is higher than the preset liquid level height, the control device decreases the opening of the pneumatic regulating valve 803, so that the liquid level in the mixing tank 800 is always kept at the preset liquid level, thereby stabilizing the solution concentration at the set value.

[0101] The dispersing blade 301 and the agglomerating blade 302 are driven to rotate by the drive mechanism 500. The dispersing blade 301 and the agglomerating blade 302 agitate the material, so that the material flows continuously and evenly in the silo 100 and the hopper 105. The material distribution sensor detects the accumulation state of the material in the silo 100 and the hopper 105 in real time. The control device adjusts the tilt angle of the dispersing blade 301 and the agglomerating blade 302 according to the detection results of the material distribution sensor. The current angle of the dispersing blade 301 and the agglomerating blade 302 is detected in real time by the angle sensor. The remaining material in the silo 100 and the hopper 105 is detected in real time by the weighing component 700.

[0102] In one possible implementation, the control device includes a control box containing a controller, and a user interface on an outer surface of the control box, with the controller electrically connected to the user interface. This allows for real-time display of the current status information of the material quantitative addition system via the user interface, facilitating operation.

[0103] It should be noted that the user interface can at least display the current and set liquid levels of the solution in the mixing tank 800, the opening and closing degree of the pneumatic regulating valve 803, the rotational speed of the feeding screw 400, and the amount of remaining material in the hopper 100 and the hopper 105.

[0104] In one example, the controller is a PLC controller.

[0105] It is understandable that the controller can be electrically connected to the power motor, servo motor, material distribution sensor, angle sensor, weighing sensor, differential pressure transmitter, power source 802, pneumatic regulating valve 803 and drain valve 804 respectively.

[0106] In one possible implementation, a concentration sensor may be installed inside the mixing tank 800. The concentration sensor is used to detect the concentration of the solution inside the mixing tank 800 in real time, and the concentration sensor is electrically connected to the controller.

[0107] In one possible implementation, the material metering system also includes an alarm electrically connected to the controller. This allows the operator to be alerted to any malfunction in the material metering system.

[0108] In one possible implementation, the bottom wall of the mixing tank 800 is inclined, and the bottom wall of the mixing tank 800 gradually descends from the pneumatic regulating valve 803 towards the drain valve 804. This allows for convenient discharge of the solution from the mixing tank 800 via the drain valve 804.

[0109] In one possible implementation, the stirring shaft 801 can be tilted, and the bottom end of the stirring shaft 801 extends to the bottom wall of the mixing tank 800 near the drain valve 804. In this way, the stirring effect of the stirring shaft 801 can be improved.

[0110] In one possible implementation, a flow meter can be installed on the drain valve 804 to detect the flow rate of the solution discharged from the mixing tank 800.

[0111] In one possible implementation, a flow meter may be installed on the pneumatic regulating valve 803 to detect the flow rate of the solution flowing into the mixing tank 800.

[0112] In the above embodiment, when the preset liquid level in the mixing tank 800 remains unchanged, the solution concentration in the mixing tank 800 is positively correlated with the output speed of the material, that is, the solution concentration in the mixing tank 800 is positively correlated with the rotational speed of the feeding screw 400. Therefore, a correspondence table between the rotational speed of different feeding screws 400 and the solution concentration can be formulated based on the same preset liquid level. When it is necessary to prepare solutions of different concentrations, the corresponding rotational speed of the feeding screw 400 can be directly selected according to the correspondence table.

[0113] Of course, a table can also be created to correspond the feed screw speed of 400 rpm to the solution concentration under different preset liquid levels.

[0114] Understandably, when it is necessary to adjust the solution concentration, the solution concentration can be changed by increasing or decreasing the rotation speed of the feed screw 400, thereby increasing or decreasing the output speed of the material.

[0115] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments" used in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Additionally, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0116] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A material metering device, characterized in that, include: A hopper (100) is provided with a discharge cylinder (101) at the bottom end of the hopper (100); A rotating shaft (200) is vertically rotatable within the hopper (100); A blade assembly (300) is detachably mounted on the rotating shaft (200). The blade assembly (300) includes at least one dispersing blade (301) and at least one converging blade (302). The dispersing blade (301) is used to disperse the material in the hopper (100), and the converging blade (302) is used to collect the material in the hopper (100). A feeding screw (400) is detachably mounted at the bottom end of the rotating shaft (200), and the bottom end of the feeding screw (400) extends into the discharge cylinder (101); A drive mechanism (500) is connected to the rotating shaft (200) for driving the paddle assembly (300) and the feeding screw (400) to rotate so as to push the material into the discharge cylinder (101) for discharge.

2. The material metering device according to claim 1, characterized in that, Both the spreading blade (301) and the converging blade (302) have an angle with the rotating shaft (200); The angle between the spreading blade (301) and the rotating shaft (200) is not less than the angle between the converging blade (302) and the rotating shaft (200).

3. The material metering device according to claim 1, characterized in that, The blade assembly (300) also includes: Mounting base (303), which is detachably mounted on the rotating shaft (200); Both the spreading blade (301) and the converging blade (302) are movably mounted on the mounting base (303), and the spreading blade (301) and the converging blade (302) are offset along the axial direction of the rotating shaft (200).

4. The material metering device according to claim 3, characterized in that, The blade assembly (300) also includes: A first angle adjustment component is disposed on the mounting base (303) and is used to adjust the angle of one of the spreading blades (301) and the converging blades (302). A second angle adjustment component is disposed on the mounting base (303) and is used to adjust the angle of the other of the spreading blade (301) and the converging blade (302); A material distribution sensor is installed inside the silo (100); Angle sensors are provided on the spreading blade (301) and the converging blade (302), respectively.

5. The material metering device according to claim 1, characterized in that, The feeding screw (400) includes a variable screw diameter section (401) and a constant screw diameter section (402), and the variable screw diameter section (401) and the constant screw diameter section (402) are connected along the axial direction of the feeding screw (400); The variable diameter section (401) is detachably connected to the rotating shaft (200), and the constant diameter section (402) extends into the discharge cylinder (101).

6. The material metering device according to claim 5, characterized in that, The diameter of the variable diameter section (401) is not less than the diameter of the constant diameter section (402), and the diameter of the variable diameter section (401) gradually decreases from the side closer to the rotating shaft (200) to the side closer to the discharge cylinder (101).

7. The material metering device according to claim 1, characterized in that, Also includes: A base (600) is disposed on one side of the hopper (100); A fixing frame (601) is disposed on the base (600), the fixing frame (601) has an opening, and the hopper (100) is located in the opening; At least one weighing component (700) is disposed at the top of the fixed frame (601), and the weighing component (700) is connected to the hopper (100) via a positioning plate (701).

8. The material metering device according to claim 1, characterized in that, The hopper (100) is provided with a feed inlet (102), and a baffle (103) is rotatably provided on the feed inlet (102). The discharge end of the discharge cylinder (101) is provided with a discharge locking tongue (104).

9. A material quantitative addition system, characterized in that, Including the material metering device according to any one of claims 1-8, and A mixing tank (800) is provided at the discharge end of the discharge cylinder (101), and a differential pressure transmitter is provided at the bottom end of the mixing tank (800). A stirring shaft (801) is rotatably disposed within the mixing tank (800); A power source (802) is connected to the stirring shaft (801) for driving the stirring shaft (801) to rotate; A pneumatic regulating valve (803) is provided, one end of which is connected to the mixing tank (800), and the other end of which is connected to the liquid storage device. A drain valve (804) is provided at the lower end of the mixing tank (800); The control device is electrically connected to the blade assembly (300), drive mechanism (500), weighing assembly (700), differential pressure transmitter, power source (802), pneumatic regulating valve (803) and drain valve (804).

10. The material metering system according to claim 9, characterized in that, The control device includes: A control box, wherein a controller is provided inside the control box, and a user interface is provided on one outer surface of the control box, and the controller is electrically connected to the user interface.

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