Mass type metering mixer

Abstract

The invention discloses a mass type metering mixer, and belongs to the field of mixers.The mass type metering mixer mainly comprises a stirring assembly used for mixing materials in a centralized mode, a conveying assembly used for conveying the materials is fixedly installed on the stirring assembly, and a stirring bin inclining downwards is fixedly installed on a base; the conveying assembly comprises a machine frame fixedly installed on the base, and a temperature compensation module capable of being matched with the weighing sensor is fixedly installed on the base. Therefore, interference of environment temperature change on the weighing sensor and other sensors can be offset, metering deviation originally caused by temperature fluctuation such as workshop day and night temperature difference, season change and sensor physical property change is corrected, and material metering data are more accurate and stable. During production, weight error minimization can be guaranteed in metering of different materials such as plastic particles and chemical powder.

Description

Technical Field

[0001] The invention relates to the technical field of mixers, in particular to a mass metering mixer. Background Art

[0002] A mass metering mixer is a specialized device that uses material mass as its core measurement unit. It achieves uniform mixing of multiple raw materials by matching their mass ratios and then using stirring and conveying mechanisms. Its working principle is to first precisely meter each raw material according to a preset mass ratio, then homogenize the materials through a mixing chamber, ultimately ensuring product quality stability and batch consistency. It is a key piece of equipment for applications requiring high metering accuracy and mixing uniformity.

[0003] However, in the existing mass-type metering mixer, the device is equipped with a weighing sensor, which is significantly affected by ambient temperature fluctuations. When the equipment is in different working conditions, such as the temperature difference between day and night in the workshop or the change of seasons, the temperature change will cause the physical properties of the sensor, such as elastic deformation and electrical signal transmission, to change, which will lead to measurement data deviation and the inability to stably and accurately measure the material weight.

[0004] Therefore, it is necessary to provide a mass metering mixer to solve the above problems. Summary of the Invention

[0005] Based on the above problems existing in the prior art, the present invention aims to solve the problem of providing a mass metering mixer to solve the problem of temperature changes interfering with weighing sensors and other sensors.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a mass metering mixer, including a stirring assembly for centralized mixing of materials, a conveying assembly for conveying materials fixedly installed on the stirring assembly, the stirring assembly including a base, a downward-inclined stirring bin fixedly installed on the base, the conveying assembly including a frame fixedly installed on the base, a metering hopper fixedly installed on the frame, a weighing sensor fixedly installed on the metering hopper, a temperature compensation module capable of cooperating with the weighing sensor fixedly installed on the base, and a screw feeder fixedly installed on the frame.

[0007] Furthermore, a threaded piece is fixedly mounted on the output shaft of the screw feeder, a conveying pipe is fixedly mounted on the screw feeder, the threaded piece of the screw feeder can extend to the interior of the conveying pipe, a feed port is opened on the conveying pipe, and the opening of the feed port faces above the frame.

[0008] Furthermore, a material detection sensor is fixedly installed on the conveying pipe, and the detection end of the material detection sensor can be close to the feed port. The material detection sensor can adopt non-contact infrared radiation or ultrasonic sensing technology.

[0009] Furthermore, a micro-pneumatic knocker is fixedly mounted on the frame, and a plurality of groups of connecting plates extending outward are evenly fixedly mounted on the micro-pneumatic knocker, and the connecting plates can be in close contact with the outer wall of each conveying pipe respectively.

[0010] Furthermore, the bottom of the metering hopper is a discharge end, and a discharge valve for discharging materials is provided on the discharge end of the metering hopper, and the discharge valve adopts a pneumatic control mode.

[0011] Furthermore, a cylinder a is fixedly mounted on the frame, and an output shaft of the cylinder a is connected to the metering hopper. The cylinder a can push the metering hopper forward, thereby opening the discharge valve.

[0012] Furthermore, a stirring rod is installed on the internal bearing of the stirring bin, and the stirring rod of the stirring bin is fixedly connected to the output shaft of the external motor.

[0013] Furthermore, a discharge port baffle is provided at the bottom of the mixing bin, and a discharge box is fixedly installed on the base near the discharge port baffle.

[0014] Furthermore, a touch screen, a main power switch and an emergency stop button are provided on the base. The main power switch and the emergency stop button are arranged below the touch screen. The main power switch has waterproof and dustproof functions, and the emergency stop button adopts a striking red design.

[0015] Furthermore, a heat dissipation port is provided on the base, a heat dissipation fan is electrically installed inside the heat dissipation port, and the heat dissipation port adopts a honeycomb design.

[0016] The beneficial effects of the present invention are:

[0017] The mass-metering mixer provided by this invention incorporates a temperature compensation module on the load cell, thereby offsetting the interference of ambient temperature changes on the load cell and other sensors. This compensates for measurement deviations caused by temperature fluctuations, such as day-night temperature differences in the workshop and seasonal changes, and changes in the sensor's physical properties, resulting in more accurate and stable material measurement data. In production, whether measuring different materials such as plastic granules and chemical powders, this ensures that weight errors are minimized.

[0018] The mass metering mixer provided by the present invention connects the connecting plate through a micro-pneumatic knocker, and makes the connecting plate contact with the conveying pipe to achieve vibration, which can effectively improve the fluidity of the material. For sticky or easily agglomerated materials, vibration can prevent blockage, ensure smooth feeding, and greatly improve feeding efficiency.

[0019] The mass metering mixer provided by the present invention can monitor the material status in real time by adding a material detection sensor at the feed port. Once material shortage is detected, the system will immediately and automatically issue an early warning to avoid production interruptions caused by untimely manual inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 Schematic diagram of the mass metering mixer of the present invention;

[0022] Figure 2 It is an overall side view of the mass metering mixer;

[0023] Figure 3 It is an overall top view of the mass metering mixer;

[0024] Among them, the reference numerals in the figures are:

[0025] 10. Mixing assembly; 11. Base; 12. Touch screen; 13. Main power switch; 14. Emergency stop button; 15. Heat dissipation vent; 16. Mixing chamber; 17. Discharge port baffle; 18. Discharge box.

[0026] 20. Conveying assembly; 21. Frame; 22. Measuring hopper; 23. Weighing sensor; 24. Cylinder a; 25. Discharge valve; 26. Screw feeder; 261. Conveying pipe; 262. Feeding port; 264. Micro pneumatic knocker; 265. Connecting plate; 266. Material detection sensor; 28. Temperature compensation module. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0029] like Figure 1-Figure 3As shown, the present invention provides a mass metering mixer, including a stirring component 10, and a conveying component 20 fixedly mounted on the stirring component 10, wherein the stirring component 10 is used to achieve uniform mixing of materials, thereby eliminating uneven distribution between materials and ultimately achieving a preset mixing uniformity requirement, and the conveying component 20 is used to transfer the material to the interior of the stirring component 10, ensuring that the material moves continuously and stably along a preset path in the production process.

[0030] The stirring assembly 10 includes a base 11, and the conveying assembly 20 includes a frame 21 fixedly mounted on the base 11, and a plurality of groups of inclined screw feeders 26 are fixedly mounted on the end of the frame 21, and a threaded piece (not shown) is fixedly mounted on the output shaft of the screw feeder 26, and a conveying pipe 261 is fixedly mounted on the screw feeder 26, and the threaded piece of the screw feeder 26 can extend into the interior of the conveying pipe 261. At the same time, a feed port 262 is opened on the conveying pipe 261, and the opening of the feed port 262 faces the top of the frame 21, so as to facilitate manual or automated equipment to put materials. This design enables different types of materials to be accurately put into the interior of the conveying pipe 261 through the corresponding feed port 262 and fully contact with the threaded piece;

[0031] When the conveying assembly 20 is in use, the screw feeder 26 is first turned on, and the screw slices rotate at high speed under the drive of the motor, and the material is conveyed upward along the conveying pipe 261 by the screw propulsion principle. During the conveying process, different materials are preliminarily stirred and mixed in the conveying pipe 261. This pre-mixing design effectively improves the efficiency of subsequent deep stirring of the stirring assembly 10, reduces the overall mixing time, and at the same time reduces the workload of the stirring assembly 10, thereby extending the service life of the equipment.

[0032] In addition, a material detection sensor 266 is fixedly installed on each conveying pipe 261. The detection end of the material detection sensor 266 can be close to the feed port 262. The material detection sensor 266 can adopt non-contact infrared radiation or ultrasonic sensing technology. When the material is normally fed, the signal emitted by the material detection sensor 266 is blocked by the material, and the system is in normal working condition. Once the material at the feed port 262 is lower than the preset height, the signal is restored to smooth flow. At this time, the material detection sensor 266 immediately transmits the material shortage signal to the equipment control system.

[0033] At the same time, a micro-pneumatic knocker 264 is fixedly mounted on the frame 21, and a plurality of groups of outwardly extending connecting plates 265 are evenly fixedly mounted on the micro-pneumatic knocker 264. The connecting plates 265 are made of hard nylon and have a smooth surface, and can be in close contact with the outer wall of each conveying pipe 261. When conveying sticky or easily agglomerated materials, the operator sets the knocking frequency through the touch screen 12. At this time, the micro-pneumatic knocker 264 generates an impact force through compressed air, which can be transmitted to the conveying pipe 261 through the connecting plates 265, causing the material adhered to the inner wall of the pipe to fall off due to the instantaneous force. At the same time, the inner wall of the conveying pipe 261 can be coated with a Teflon anti-stick coating to further reduce material adhesion.

[0034] It should be noted that the micro pneumatic knocker 264 is subjected to intermittent force rather than continuous vibration. After the impact force is dispersed by the connecting plate 265, the vibration energy transmitted to the frame 21 is greatly reduced, and it hardly affects the measurement stability of the weighing sensor 23.

[0035] The inside of the frame 21 is fixedly installed with mutually symmetrical metering hoppers 22, and the discharge end of the conveying pipe 261 can be close to the metering hopper 22 to ensure that the material can flow in smoothly. After the material inside the conveying pipe 261 is initially stirred and mixed, it will gradually be conveyed upward, so that the material will continuously enter the metering hopper 22 for collection. At the same time, the bottom of the metering hopper 22 is the discharge end. A discharge valve 25 for blocking the material is provided on the discharge end of the metering hopper 22. The discharge valve 25 adopts pneumatic control, so it has the characteristics of rapid response, good sealing, and precise control of material discharge.

[0036] Furthermore, a weighing sensor 23 is fixedly mounted on each of the two groups of metering hoppers 22. The weighing sensor 23 may be a high-precision strain gauge sensor, thereby being able to monitor the weight change of the material in the metering hopper 22 in real time and accurately.

[0037] A cylinder a24 is fixedly mounted on the frame 21, and the output shaft of the cylinder a24 is connected to the metering hopper 22. After the operator sets the metering weight of the material in the control system through the touch screen 12, the screw feeder 26 starts working, and then continuously squeezes the material into the metering hopper 22. As the material is continuously added, the weighing sensor 23 can feed back the weight data to the control system, and finally display it on the touch screen 12. When the material weight reaches the specified value, the control system immediately issues an instruction. At this time, the cylinder a24 operates to push the metering hopper 22 forward, thereby opening the discharge valve 25, and allowing the material to quickly and accurately enter the stirring assembly 10 below. This metering method, combined with the automated control process, effectively avoids the errors and instability of manual metering, ensures the consistency of the raw material ratio of each batch of products, and significantly improves product quality and production efficiency.

[0038] The base 11 is provided with a touch screen 12, a main power switch 13 and an emergency stop button 14. The control components are all installed in a position that is convenient for operation. The operator can intuitively set various parameters and monitor the operating status of the equipment through the touch screen 12. For example, the operator can quickly set the speed of the screw feeder 26, the weighing sensor 23 and the stirring time and other parameters, and view the operating status of the equipment in real time. The main power switch 13 and the emergency stop button 14 can be set below the touch screen 12, and the main power switch 13 has waterproof and dustproof functions. At the same time, the emergency stop button 14 adopts a striking red design, so that the operator can quickly press it in case of an emergency to immediately cut off all power output of the equipment to ensure the safety of personnel and equipment.

[0039] The above components can effectively improve the convenience and safety of operation, reduce the risk of misoperation, and at the same time reduce the learning cost of operators through the intelligent interactive interface of the touch screen 12, thereby improving production efficiency.

[0040] The base 11 is provided with a heat dissipation vent 15, and a heat dissipation fan is electrically installed inside the heat dissipation vent 15. At the same time, the heat dissipation vent 15 adopts a honeycomb design, and together with the heat dissipation fan inside the heat dissipation vent 15, it can quickly dissipate the heat generated by the operation of the device. When the device is running, the heat dissipation vent 15 and the heat dissipation fan inside the heat dissipation vent 15 will automatically adjust the speed according to the feedback signal of the internal temperature sensor. When the temperature is low, it will run at a low speed to reduce energy consumption. When the temperature exceeds a preset threshold, it will run at full speed to quickly remove the heat generated by the heat-generating components.

[0041] The temperature sensor model can be an NTC thermistor sensor, which is small in size and easy to install near the heat dissipation port 15 or on the surface of the heating component, and can provide real-time feedback of the temperature signal to control the speed of the cooling fan.

[0042] A mixing bin 16 is fixedly mounted on the base 11 near the bottom of the two groups of metering hoppers 22. When the discharge valve 25 is opened, the material will be concentrated inside the mixing bin 16 for storage. A stirring rod is installed on the internal bearing of the mixing bin 16. At the same time, the stirring rod of the mixing bin 16 is fixedly connected to the output shaft of the external motor, so that turning on the motor will drive the stirring rod to rotate, thereby allowing the material inside the mixing bin 16 to be stirred for a second time. The stirring time can be pre-set through the touch screen 12, and the control system accurately controls the stirring process according to the time signal.

[0043] At the same time, the angle of the mixing bin 16 is gradually tilted downward, and the tilt angle is 15°-30°, and can be adjusted according to the characteristics of the material, so that the material inside the mixing bin 16 will always be at the bottom under the action of gravity, ensuring that the material is evenly distributed during the mixing process and avoiding dead corners. A discharge port baffle 17 is provided at the bottom of the mixing bin 16, and a discharge box 18 is fixedly installed on the base 11 near the discharge port baffle 17. A cylinder b (not shown) for driving the discharge port baffle 17 is provided on the discharge port baffle 17;

[0044] After the stirring is completed, the cylinder b on the discharge port baffle 17 is retracted, driving the discharge port baffle 17 to open. At the same time, the discharge port baffle 17 adopts a large-diameter design to ensure that the material is discharged quickly. At the same time, the discharge port baffle 17 can be made of silicone material to ensure sealing performance and prevent material leakage. At this time, the discharged material falls directly into the discharge box 18. The discharge box 18 adopts a drawer-type design and a roller is installed at the bottom (not shown) to facilitate material collection and transportation. The entire discharge process of the equipment has a high degree of automation, which reduces manual intervention and reduces the risk of material contamination. At the same time, the fast discharge speed improves production efficiency and shortens the batch production cycle.

[0045] A temperature compensation module 28 is fixedly mounted on the base 11. The temperature compensation module 28 can cooperate with the weighing sensor 23. The temperature compensation module 28 is electrically connected to an external power supply. When the ambient temperature changes, the temperature compensation module 28 collects temperature data around the weighing sensor 23 in real time, thereby automatically adjusting the sensor output signal. For example, when the temperature rises and causes a positive deviation in the sensor output, the temperature compensation module 28 corrects the signal in the reverse direction to offset the effect of the temperature change on the measurement accuracy, ensuring that the measurement error is always controlled within a certain range. This cooperation can improve the measurement stability of the equipment under different ambient temperatures, and is particularly suitable for high-temperature workshops or production scenarios with large temperature differences between day and night, thereby avoiding imbalance in material ratios caused by temperature fluctuations.

[0046] At the same time, the temperature compensation module 28 is integrated with the base 11 , and the base 11 is made of metal. The metal material of the base 11 assists in heat dissipation, further improving the stability and service life of the module itself.

[0047] It should be noted that the model of the weighing sensor 23 in the article can be L6E-C3-100KG-3B, which is made of aluminum alloy, has a silicone rubber seal and an anodized surface, and adopts a single-point structure;

[0048] At the same time, the model of the material detection sensor 266 can be KRE65-1N, which is suitable for the detection of liquids, granular objects and block objects, and is not affected by scaling and material accumulation on the sensor surface itself, and has a strong anti-static function;

[0049] Finally, the model of the temperature compensation module 28 may be ADS1248, which can support thermocouple temperature measurement and cold-end compensation methods such as RTD or NTC in a single chip, thereby facilitating the implementation of temperature compensation function in the device.

[0050] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. Mass metering mixer, characterized by: The invention comprises a stirring assembly (10) for centrally mixing materials, a conveying assembly (20) for conveying materials being fixedly mounted on the stirring assembly (10), the stirring assembly (10) comprising a base (11), a stirring bin (16) tilted downward being fixedly mounted on the base (11), the conveying assembly (20) comprising a frame (21) fixedly mounted on the base (11), a metering hopper (22) fixedly mounted on the frame (21), a weighing sensor (23) fixedly mounted on the metering hopper (22), a temperature compensation module (28) capable of cooperating with the weighing sensor (23) fixedly mounted on the base (11), and a screw feeder (26) fixedly mounted on the frame (21).

2. The mass metering mixer according to claim 1, characterized in that: A threaded piece is fixedly mounted on the output shaft of the screw feeder (26), and a conveying pipe (261) is fixedly mounted on the screw feeder (26). The threaded piece of the screw feeder (26) can extend into the interior of the conveying pipe (261). A feed port (262) is provided on the conveying pipe (261), and the opening of the feed port (262) faces upwards of the frame (21).

3. The mass metering mixer according to claim 2, characterized in that: A material detection sensor (266) is fixedly mounted on the conveying pipe (261), and a detection end of the material detection sensor (266) can be close to the feed port (262). The material detection sensor (266) can adopt non-contact infrared radiation or ultrasonic sensing technology.

4. The mass metering mixer according to claim 2, characterized in that: A micro-pneumatic knocker (264) is fixedly mounted on the frame (21), and a plurality of groups of outwardly extending connecting plates (265) are evenly fixedly mounted on the micro-pneumatic knocker (264), and the connecting plates (265) can be in close contact with the outer walls of each conveying pipe (261).

5. The mass metering mixer according to claim 1, characterized in that: The bottom of the metering hopper (22) is a discharge end, and a discharge valve (25) for discharging materials is provided on the discharge end of the metering hopper (22), and the discharge valve (25) adopts a pneumatic control mode.

6. The mass metering mixer according to claim 5, characterized in that: A cylinder a (24) is fixedly mounted on the frame (21), and an output shaft of the cylinder a (24) is connected to the metering hopper (22). The cylinder a (24) can push the metering hopper (22) forward, thereby opening the discharge valve (25).

7. The mass metering mixer according to claim 1, characterized in that: The internal bearing of the stirring chamber (16) is equipped with a stirring rod, and the stirring rod of the stirring chamber (16) is fixedly connected to the output shaft of the external motor.

8. The mass metering mixer according to claim 7, characterized in that: A discharge port baffle (17) is provided at the bottom of the mixing bin (16), and a discharge box (18) is fixedly mounted on the base (11) near the discharge port baffle (17).

9. The mass metering mixer according to claim 1, characterized in that: The base (11) is provided with a touch screen (12), a main power switch (13) and an emergency stop button (14). The main power switch (13) and the emergency stop button (14) are arranged below the touch screen (12). The main power switch (13) has a waterproof and dustproof function, and the emergency stop button (14) adopts a red eye-catching design.

10. The mass metering mixer according to claim 1, characterized in that: The base (11) is provided with a heat dissipation port (15), a heat dissipation fan is electrically installed inside the heat dissipation port (15), and the heat dissipation port (15) adopts a honeycomb design.

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