A continuous micro-metering device

Abstract

The present invention relates to the technical field of compounding materials, and discloses a continuous micro-metering device, including an outer shell, and a spiral shaft; a storage chamber is connected to the first end of the upper part of the outer shell near the servo motor, and a platform scale for weighing the entire continuous micro-metering device is arranged below the outer shell; a feeding port is connected to the second end of the outer shell, a vibrating orifice plate for continuous feeding is arranged in the feeding port, and a low material level meter is arranged above the vibrating orifice plate; a PLC controller controls the feeding accuracy of the vibrating orifice plate according to the weight reduction; the PLC controller receives the signal of the low material level meter, and controls the spiral shaft to start to feed the vibrating orifice plate. Through the continuous micro-metering device, materials can be continuously fed, and micro-metering and feeding can be controlled; in addition, when feeding materials, the feeding of the main raw material is also uniformly supplied at the same time, and the mixing device receives multiple materials while mixing, so as to quickly achieve the purpose of uniform mixing.

Description

Technical Field

[0001] This invention relates to the field of compounding technology, and in particular to a continuous micro-metering device. Background Technology

[0002] For the processing of trace element mixtures, existing methods involve manually adding the trace materials into a mixing device all at once, which places high demands on the mixing efficiency of the device. Poor mixing results in uneven proportions in certain areas of the product, thus affecting product quality. This invention proposes a metering device for continuous feeding of trace elements. The trace elements and main raw materials are fed simultaneously and uniformly, and the mixing device receives and mixes multiple materials at the same time, thereby achieving uniform mixing. Summary of the Invention

[0003] The present invention aims to provide a continuous micro-metering device to solve the aforementioned technical problem that may lead to uneven local proportions when mixing micro-materials in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A continuous micro-metering device includes a cylindrical outer shell and a spiral shaft inserted into and fitted within the outer shell. A servo motor is driven to the first end of the spiral shaft, which is used to convey materials. A storage chamber communicating with the outer shell is connected to the first end near the servo motor at the top of the outer shell. A platform scale for weighing the entire continuous micro-metering device is located below the outer shell. A downward-facing discharge port is connected to the second end of the outer shell, and a vibrating orifice plate for continuous feeding is installed inside the discharge port. A low-level gauge is installed above the vibrating orifice plate. The vibrating orifice plate, platform scale, low-level gauge, and servo motor are electrically connected to a PLC controller. The PLC controller controls the vibrating orifice plate to vibrate and discharge materials. A built-in weight sensor on the platform scale measures the weight reduction and outputs a signal to the PLC controller. The PLC controller controls the discharging accuracy of the vibrating orifice plate based on the weight reduction. The PLC controller receives the signal from the low-level gauge and controls the spiral shaft to start feeding materials into the vibrating orifice plate.

[0006] According to the continuous micro-metering device of the present invention, the inlet of the storage chamber is provided with a quick-opening mechanism.

[0007] According to the continuous micro-metering device of the present invention, the quick-opening mechanism includes a quick-install blind plate; the quick-install blind plate closes the storage chamber by a quick-install buckle.

[0008] According to the continuous micro-metering device of the present invention, the top of the outer casing is detachably connected to an upper cover, which is correspondingly disposed above the feed inlet.

[0009] The continuous micro-metering device according to the present invention further includes a vibrator connected to the vibrating orifice plate and driving the vibrating orifice plate to vibrate at a frequency; the vibrator is fixed on the feed port by a bracket.

[0010] According to the continuous micro-metering device of the present invention, the vibrating orifice plate is provided with a plurality of micro-holes, the diameter and number of micro-holes being determined according to the physical properties of the material and the required flow rate of the material.

[0011] The beneficial effects of this invention are:

[0012] In operation, this continuous micro-metering equipment allows materials to be manually or mechanically fed into the storage chamber. The platform scale records the total weight of the entire continuous micro-metering equipment containing the material at that moment. When the downstream mixing equipment needs to dispense materials, the servo motor starts, and the screw shaft rotates under the drive of the servo motor, propelling the material forward. The material is conveyed from the first end of the outer casing to the second end and falls onto the vibrating perforated plate. After the material conveying reaches the set time, the servo motor stops, the vibrating perforated plate continues to vibrate, and the material passes through the micro-holes and enters the mixing equipment through the discharge port. The mixing equipment can be continuously supplied, allowing for continuous operation and uniform mixing. If the material reduction (measured by the platform scale) is compared with the actual mixing requirements based on the discharge accuracy of the vibrating perforated plate, the feedback is sent to the PLC controller. The PLC controller adjusts the amplitude of the vibrating perforated plate to adjust the discharge accuracy. When the low-level gauge loses its signal, it sends a feedback to the PLC controller, which then controls the screw shaft to replenish the material. Furthermore, the vibrating orifice plate continuously feeds materials as long as the downstream mixing equipment requires feeding; if the vibrating orifice plate is disconnected from feeding for an extended period, it will cause uneven mixing in the downstream mixing equipment. With a continuous micro-metering device, materials can be continuously fed, and the micro-metering and feeding can be controlled. In addition, while materials are being fed, the main raw materials are also supplied evenly at the same time. The mixing equipment receives and mixes multiple materials simultaneously, thus achieving rapid and uniform mixing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the vibrating orifice plate.

[0015] Figure label:

[0016] 1-Servo motor, 2-Air seal chamber, 3-Screw shaft, 4-Outer shell, 5-Storage chamber, 6-Top cover, 7-Platform scale, 8-Low level gauge, 9-Discharge port, 10-Vibrating plate, 11-Bracket, 12-Vibrator, 13-Bearing, 14-Micro hole, 15-Quick-install blind flange. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0018] Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0019] Example 1

[0020] Please see Figure 1 , Figure 2 This invention provides a continuous micro-metering device, comprising a cylindrical outer shell 4 and a spiral shaft 3 inserted and fitted inside the outer shell 4; the first end of the spiral shaft 3 is connected to a servo motor 1 for conveying materials; a storage chamber 5 communicating with the outer shell 4 is connected to the first end near the servo motor 1 at the top of the outer shell 4; a platform scale 7 for weighing the entire continuous micro-metering device is provided at the bottom of the outer shell 4; a downward-facing discharge port 9 is connected to the second end of the outer shell 4, and a continuous feeding mechanism is provided inside the discharge port 9. A vibrating orifice plate 10 is provided, with a low-level gauge 8 installed above it. The vibrating orifice plate 10, platform scale 7, low-level gauge 8, and servo motor 1 are electrically connected to a PLC controller. The PLC controller controls the vibrating orifice plate 10 to vibrate and discharge material. The weight sensor built into the platform scale 7 measures the weight reduction and outputs a signal to the PLC controller. The PLC controller controls the discharge accuracy of the vibrating orifice plate 10 based on the weight reduction. The PLC controller receives the signal from the low-level gauge 8 and controls the screw shaft 3 to start and replenish material to the vibrating orifice plate 10.

[0021] The platform scale 7 supports the entire continuous micro-metering equipment. The platform scale 7 has a weight sensor inside. When the material is transported to the downstream mixing equipment (such as a mixer) for batching, the weight reduction of the continuous micro-metering equipment is the weight of the material used for batching that is transported away, thereby achieving the purpose of metering.

[0022] The entrance to the storage chamber 5 is equipped with a quick-opening mechanism.

[0023] The quick-opening mechanism includes a quick-install blind plate 15; the quick-install blind plate 15 closes the storage chamber 5 via a quick-install buckle.

[0024] The aforementioned quick-opening mechanism enables rapid opening and closing, facilitating the quick loading of materials into the storage chamber and improving work efficiency.

[0025] The top of the outer shell 4 is detachably connected to the upper cover 6, which is positioned above the discharge port 9.

[0026] In the above description, the outer casing 4 has a U-shaped cross-section, and the upper cover 6 can close the opening of the outer casing 4 before being used with the screw shaft 3 to convey materials. In addition, the upper cover 6 can be disassembled for equipment maintenance.

[0027] This continuous micro-metering device also includes a vibrator 12 connected to the vibrating orifice plate 10 and driving the vibrating orifice plate 10 to vibrate at a frequency; the vibrator 12 is fixed on the feed port 9 by a bracket 11.

[0028] The low level gauge 8 is fixed inside the discharge port 9 and above the vibrating orifice plate 10 to monitor the material accumulated on the vibrating orifice plate 10.

[0029] The vibrating orifice plate 10 has a plurality of micro-holes 14, the diameter and number of micro-holes 14 being determined according to the physical properties of the material and the required flow rate of the material.

[0030] In the above, the low level gauge 8 detects the height of the material on the vibrating orifice plate 10. When the material is lower than the low level gauge 8, it needs to be replenished. The servo motor 1 is started to convey the material to the lower feed port 9 and the vibrating orifice plate 10.

[0031] Example 2

[0032] Please see Figure 1 , Figure 2 This is a specific application of the continuous micro-metering device provided in Example 1.

[0033] This continuous micro-metering equipment mainly consists of a servo motor 1, an air-sealed chamber 2, a screw shaft 3, an outer casing 4, a storage chamber 5, a top cover 6, a platform scale 7, a low-level gauge 8, a discharge port 9, a vibrating plate 10, a support 11, a vibrator 12, and bearings 13. The servo motor 1 and air-sealed chamber 2 are mounted on the outer casing 4; the screw shaft 3 is mounted on the outer casing 4 via bearings 13 and the servo motor 1; the storage chamber 5 is welded to the outer casing 4; the top cover 6 is bolted to the outer casing 4 for sealing; the platform scale 7 supports the entire continuous micro-metering equipment; the low-level gauge 8 is threaded to the discharge port 9, which is connected to the outer casing 4; and the vibrator 12 is mounted on the support 11. The vibrating perforated plate 10, platform scale 7, and servo motor 1 are electrically connected to a PLC controller. The PLC controller controls the vibrating perforated plate 10 to vibrate and discharge material (achieved through a vibrator 12, which is electrically connected to the PLC controller). The weight sensor built into the platform scale 7 measures the weight reduction and outputs a signal. The PLC controller can control the discharge accuracy of the vibrating perforated plate 10 based on the weight reduction, or activate / deactivate the servo motor 1 and screw shaft 3 to replenish material. Discharge accuracy can be understood as the weight of the discharged material, the discharge rate, etc.

[0034] In the above, the outer casing 4 provides support for all components and, together with the top cover 6, provides a space for material conveying. The main function of the servo motor 1 is to provide conveying power to the screw shaft 3, which is used to convey materials; the bearing 13, in conjunction with the servo motor 1, supports the screw shaft 3. The air seal chamber 2 achieves sealing between the screw shaft 3 and the outer casing 4 by controlling the air path. The storage chamber 5 is welded to the outer casing 4 and has a quick-release blind plate 15 on it, which is fixed and sealed by quick-release buckles. It is the feeding port for micro-materials; when feeding is needed, the quick-release blind plate 15 is opened; after feeding, the quick-release blind plate 15 is locked. The platform scale 7 supports the entire continuous micro-metering equipment and has a weight sensor inside. When materials pass through this equipment to be fed to the downstream mixer, the reduced weight is the weight of the proportioned material, thereby achieving the purpose of metering. The low-level gauge 8 is used to send control signals for starting and stopping the screw shaft 3. When the material above the vibrating orifice plate 10 is lower than the low-level gauge 8, the low-level gauge 8 sends a signal to the PLC controller, which then controls the servo motor 1 to start. After the servo motor 1 starts and transmits material for a set time, the servo motor 1 stops. The discharge port 9 is the connection channel for material to enter the mixing equipment. The vibrating orifice plate 10 inside has several micro-holes 14. The diameter and number of micro-holes 14 need to be determined according to the required material flow rate, as well as parameters such as the material's flowability, particle size, and density. It is the basis for controlling the material discharge speed of the entire equipment. The bracket 11 is used to connect the vibrator 12. The vibrator 12 is equipped with a speed control valve. By adjusting the air flow rate entering the vibrator 12, the amplitude is adjusted to control the material discharge speed on the vibrating orifice plate 10. The PLC controller can adjust the amplitude of the vibrator 12 based on signal feedback.

[0035] In operation, materials are manually or mechanically fed into the storage chamber of this continuous micro-metering equipment. After feeding, the quick-release blind plate 15 is closed. The platform scale 7 records the total weight of the entire continuous micro-metering equipment containing materials at this time. When the downstream mixing equipment needs to dispense materials, the servo motor 1 is turned on, and the screw shaft 3 rotates and propels the material forward under the drive of the servo motor 1. The material is conveyed from the first end of the outer casing 4 to the second end and falls above the vibrating orifice plate 10. After the conveying reaches the set time, the servo motor 1 stops, and the vibrator 12 drives the vibrating orifice plate 10 to vibrate continuously during operation. The material passes through the micro-holes 14 and enters the mixing equipment from the discharge port 9. If the amount of material reduction (weighed by the platform scale 7) does not meet the required amount of the mixed material, the PLC controller can adjust the dispensing accuracy of the vibrating orifice plate 10 by adjusting the amplitude of the vibrator 12. When the material level falls below the low-level gauge 8 above the vibrating orifice plate 10, the low-level gauge 8 sends a signal to the PLC controller indicating that material needs to be replenished. The PLC controller then controls the servo motor 1 to restart and continue feeding material to replenish the vibrating orifice plate 10. The vibrating orifice plate 10 continuously vibrates and discharges material under the action of the vibrator 12, thus achieving the purpose of continuous micro-feeding. In addition, the vibrating orifice plate 10 continuously feeds material whenever the downstream mixing equipment needs to feed. Through the continuous micro-metering equipment, material can be continuously fed, and the micro-metering and feeding can be controlled. In addition, when the material is fed, the main raw material is also supplied evenly at the same time. The mixing equipment receives and mixes multiple materials simultaneously, thereby quickly achieving the purpose of uniform mixing.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A continuous micro-metering device, characterized in that: It comprises a cylindrical outer shell, and a spiral shaft which is passed through and matched in the outer shell; the first end of the spiral shaft is connected to the servo motor, and the spiral shaft is used to convey materials; the upper part of the outer shell is connected to the first end close to the servo motor with a storage chamber which is connected to the outer shell, and the lower part of the outer shell is provided with a platform scale for weighing the entire continuous micro-metering device; the second end of the outer shell is connected with a downwardly arranged feeding port, and a vibrating orifice plate for continuous feeding is arranged in the feeding port, and a low material level meter is arranged above the vibrating orifice plate; the vibrating orifice plate, the platform scale, the low material level meter, and the servo motor are electrically connected to a PLC controller, and the PLC controller controls the vibrating orifice plate to vibrate and discharge materials; the built-in weight sensor of the platform scale obtains the weight reduction and outputs a signal to the PLC controller, and the PLC controller controls the feeding accuracy of the vibrating orifice plate according to the weight reduction; the PLC controller receives the signal of the low material level meter, and controls the spiral shaft to start to feed the vibrating orifice plate; The entrance of the storage chamber is provided with a quick opening mechanism; The top of the outer shell is detachably connected to an upper cover, and the upper cover is correspondingly arranged above the discharge port.

2. The continuous micro-dosing device according to claim 1, characterized in that: The quick-opening mechanism comprises a quick-install blind plate; the quick-install blind plate closes the storage chamber through a quick-install buckle.

3. The continuous micro-dosing device according to claim 1, characterized in that: It also includes a vibrator which is connected to the vibration hole plate and drives the vibration hole plate to vibrate at a certain frequency; the vibrator is fixed on the feeding port through a bracket.

4. The continuous micro-metering device according to claim 1, characterized in that: The vibration orifice plate is provided with a plurality of micro holes, and the diameter and number of the micro holes are determined according to the physical properties of the material and the required flow rate of the material.

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