Metering device

Abstract

This utility model discloses a metering and discharging device, relating to the field of discharging equipment. It includes an inclined pipe, a telescopic device, a discharge baffle, and a control device. One end of the inclined pipe is connected to a hopper, and the other end slopes downwards. The inclined pipe has an opening. One end of the discharge baffle passes through the opening and extends into the inclined pipe. The telescopic device is fixedly connected to the other end of the discharge baffle, and can extend and retract the discharge baffle to put it in a discharging or stopped state. In the discharging state, a gap is left between the discharge baffle and the inclined pipe for material to pass through. In the stopped state, the outer wall of the discharge baffle can contact the inner wall of the inclined pipe to prevent material from being discharged from the port of the inclined pipe away from the hopper. The control device can control the extension and retraction of the telescopic device to put the discharge baffle in a stopped or discharging state. This utility model improves production efficiency, reduces material loss and labor costs, and improves the accuracy of discharging quantity control.

Description

Technical Field

[0001] This utility model relates to the field of material feeding equipment technology, and in particular to a metering material feeding device. Background Technology

[0002] In the production and processing of modified plastics and other materials, the material feeding process plays a crucial role in production efficiency and material loss control. Traditional modified plastic feeding devices are relatively rudimentary, typically consisting of a metal plate and handle assembly on the feeding pipeline. During operation, the operator needs to hold the bag opening with one hand and use the other to lift and press the handle to move the metal plate, opening or closing the feeding port. This simple feeding device has several drawbacks: because the feeding process relies on the operator's single-handed control of the handle, the feeding speed and amount are difficult to control precisely, resulting in significant fluctuations in the feeding amount each time. Excessive feeding easily leads to spillage, wasting material and requiring manual removal and reweighing of the bag; insufficient feeding necessitates repeatedly lifting and pressing the handle to add material to meet the weight requirements of each package. These cumbersome processes significantly reduce production efficiency while increasing material loss and labor costs. Therefore, there is an urgent need for a device that can achieve accurate metering and automated material feeding to solve the problems existing in the current technology. Utility Model Content

[0003] The purpose of this invention is to provide a metering and feeding device to solve the problems existing in the prior art, improve production efficiency, reduce material loss and labor costs, and improve the accuracy of feeding quantity control.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a metering and discharging device, including an inclined pipe, a telescopic device, a discharge baffle, and a control device, wherein: The inclined pipe is installed below the hopper, one end of the inclined pipe is connected to the hopper, and the other end of the inclined pipe extends away from the hopper. The inclined pipe is inclined relative to the vertical plane. An opening is provided on the surface of the inclined pipe near the hopper. One end of the discharge baffle passes through the opening and extends into the inclined pipe; The output end of the telescopic device is fixedly connected to the other end of the discharge baffle. The telescopic device can drive the discharge baffle to extend and retract along a first direction so that the discharge baffle is in a discharging state or a stopped discharging state. When the discharge baffle is in the discharging state, a gap is left between the outer wall of the discharge baffle and the inner wall of the inclined pipe for material to pass through. When the discharge baffle is in the stopped discharging state, the outer wall of the discharge baffle can contact the inner wall of the inclined pipe to prevent the material from being discharged from the port of the inclined pipe away from the hopper. The control device is signal-connected to the telescopic device, and the control device can control the telescopic device to extend or retract so that the feeding baffle is in the stopped feeding state or the feeding state.

[0005] Preferably, the control device can control the telescopic device to extend or retract to a set position at a set speed, the control device can control the time interval between the start of a single extension action of the telescopic device and the end of the corresponding single extension holding action, and the control device can control the time interval between the start of a single retraction action of the telescopic device and the end of the corresponding single retraction holding action.

[0006] Preferably, the telescopic device can drive the discharge baffle to extend and retract in the vertical direction.

[0007] Preferably, it further includes a telescopic speed adjustment device, which is connected to the telescopic device and is capable of adjusting the telescopic speed of the telescopic device.

[0008] Preferably, it further includes a guide device, which is fixedly connected to the inclined pipe, and the telescopic device is connected to the guide device and is capable of relative sliding with the guide device along the first direction.

[0009] Preferably, the device further includes a vertical pipe and the hopper, the upper end of the vertical pipe being fixedly connected to and communicating with the discharge port of the hopper, the lower end of the vertical pipe being fixedly connected to and communicating with the upper end of the inclined pipe, and the telescopic device being detachably fixedly connected to the vertical pipe.

[0010] Preferably, it also includes a trigger switch, which is communicatively connected to the control device.

[0011] Preferably, the width of the opening is not greater than the minimum external dimensions of the material.

[0012] Preferably, the telescopic speed regulating device is a throttle valve.

[0013] Preferably, the guiding device includes a baffle plate, which is fixedly connected to the outside of the opening of the inclined pipe. The baffle plate is provided with a guide hole, and the discharge baffle can pass through the guide hole and the opening in sequence and extend into the inclined pipe. The telescopic device is slidably connected to the guide hole along the first direction.

[0014] The present invention achieves the following technical advantages over the prior art: This utility model provides a metering and discharging device, including an inclined pipe, a telescopic device, a discharge baffle, and a control device. The inclined pipe is positioned below a hopper, with one end connected to the hopper and the other end extending away from the hopper. The inclined pipe is inclined relative to a vertical plane. An opening is formed on the surface of the inclined pipe near the hopper. One end of the discharge baffle passes through the opening and extends into the inclined pipe. The output end of the telescopic device is fixedly connected to the other end of the discharge baffle. The telescopic device can extend and retract the discharge baffle in a first direction to put the discharge baffle in a discharging state or a stopped discharging state. When the discharge baffle is in the discharging state, a gap is left between the outer wall of the discharge baffle and the inner wall of the inclined pipe for material to pass through. When the discharge baffle is in the stopped discharging state, the outer wall of the discharge baffle can contact the inner wall of the inclined pipe to prevent material from being discharged from the port of the inclined pipe away from the hopper. The control device is signal-connected to the telescopic device and can control the telescopic device to extend or retract to put the discharge baffle in a stopped discharging state or a discharging state.

[0015] This invention uses a control device to control the telescopic device, allowing it to periodically extend and retract at set time intervals. This controls the size of the discharge port opening and the opening and closing time, as well as the discharge and stopping times. When the hopper discharge is stable, it enables more accurate control of the single discharge amount, effectively reducing or avoiding overfilling or underfilling. It also effectively prevents material spillage caused by excessive material in the bag, improving the level of automation control. It eliminates the need for manual opening and closing of the discharge port and control of the discharge amount, increasing production efficiency and reducing material loss and labor costs. Material is discharged from the lower outlet of the inclined pipe. Compared to direct discharge from a vertical pipe, the inclined pipe reduces the material's falling speed, improving the accuracy of discharge amount control. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the metering and feeding device provided in Example 1; Figure 2 This is a schematic diagram of the control system of the metering and feeding device provided in Example 1; Figure 3 This is a partial structural diagram of the feeding baffle and baffle plate provided in Example 1; In the diagram: 100, metering and feeding device; 1, inclined pipe; 101, opening; 2, telescopic device; 3, feeding baffle; 4, control device; 5, hopper; 6, vertical pipe; 7, trigger switch; 8, throttle valve; 9, baffle plate; 10, clamp device; 1001, hinge; 11, feeding port; 12, control panel; 13, power switch; 14, solenoid valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "center," "longitudinal," "transverse," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "clockwise," and "counterclockwise," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, it should be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The purpose of this invention is to provide a metering and feeding device to solve the problems existing in the prior art, improve production efficiency, reduce material loss and labor costs, and improve the accuracy of feeding quantity control.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 like Figures 1-3 As shown, this embodiment provides a metering and discharging device 100, including an inclined pipe 1, a telescopic device 2, a discharge baffle 3, and a control device 4. The inclined pipe 1 is positioned below a hopper 5, with one end connected to the hopper 5 and the other end extending away from the hopper 5. The inclined pipe 1 is inclined relative to a vertical plane. An opening 101 is formed on the surface of the inclined pipe 1 near the hopper 5. One end of the discharge baffle 3 passes through the opening 101 and extends into the inclined pipe 1. The output end of the telescopic device 2 is fixedly connected to the other end of the discharge baffle 3. Device 2 can drive the discharge baffle 3 to extend or retract in the first direction so that the discharge baffle 3 is in the discharge state or the discharge state is stopped; when the discharge baffle 3 is in the discharge state, there is a gap between the outer wall of the discharge baffle 3 and the inner wall of the inclined pipe 1 for material to pass through; when the discharge baffle 3 is in the discharge state, the outer wall of the discharge baffle 3 can contact the inner wall of the inclined pipe 1 to prevent material from being discharged from the port of the inclined pipe 1 away from the hopper 5; the control device 4 is signal connected to the telescopic device 2, and the control device 4 can control the telescopic device 2 to extend or retract so that the discharge baffle 3 is in the discharge state or the discharge state.

[0023] In this embodiment, the telescopic device 2 is controlled by the control device 4 to periodically extend and retract at set time intervals, thereby controlling the size of the discharge port opening 101 and the opening and closing time of the discharge port. When the material discharge from the hopper 5 is stable, that is, when the discharge baffle 3 is in the discharge position, the amount of material passing through the gap between the discharge baffle 3 and the inclined pipe 1 per unit time is constant. Therefore, by controlling the discharge time, a relatively precise control of the single discharge amount can be achieved, which can effectively reduce or avoid the problem of overfilling or underfilling of material, and can effectively prevent material spillage caused by overfilling in the bag. Combined with controlling the stop discharge time, continuous production can be achieved, improving the level of automation control. There is no need for manual opening or closing of the discharge port and the discharge amount, which improves production efficiency and reduces material loss and labor costs. The material is discharged from the lower outlet of the inclined pipe 1. Compared with the direct discharge of the vertical pipe 6, the inclined pipe 1 helps to reduce the falling speed of the material and improves the accuracy of the discharge amount control.

[0024] It should be noted that the centerline of the inclined pipe 1 forms an acute angle with the vertical plane. The included angle between the two can be set and adjusted according to usage requirements or experimental verification to regulate the material discharge speed and ensure that the material does not accumulate on the inclined pipe 1. This ensures that the discharge baffle 3 can quickly open and cut off the flow of material when it is opened and closed, and avoids the phenomenon of the discharge baffle 3 getting stuck or material residue accumulating in the pipe.

[0025] In this specific embodiment, the control device 4 can control the telescopic device 2 to extend or retract to a set position at a set speed. The control device 4 can control the time interval between the start of a single extension action of the telescopic device 2 and the end of the corresponding single extension holding action. The control device 4 can control the time interval between the start of a single retraction action of the telescopic device 2 and the end of the corresponding single retraction holding action. Control device 4 controls the degree of opening of the discharge port each time by controlling the retraction length of telescopic device 2. When the material discharge in hopper 5 is stable, the discharge amount per unit time can be guaranteed to be the same or basically the same. Through prior calibration, the time interval (first time interval) from the start of each extension action of telescopic device 2 to the end of the discharge port remaining closed (end of a single extension holding action) can be determined, and the time interval (second time interval) from the start of each retraction action of telescopic device 2 to the end of the discharge port remaining open (end of a single retraction holding action) can be determined. During the second time interval, telescopic device 2 controls the discharge baffle 3 to rise from the stop discharge position to the discharge position and maintain it in the discharge position, at which time material is discharged into the bag. During the first time interval, telescopic device 2 controls the discharge baffle 3 to fall from the discharge state to the stop discharge state, stopping the discharge, so as to seal the bag, transfer it, and insert a new bag. Telescopic device 2 extends and retracts periodically with the first and second time intervals to achieve continuous material discharge operation.

[0026] In this specific embodiment, the telescopic device 2 can drive the feeding baffle 3 to extend and retract in the vertical direction.

[0027] In this specific embodiment, a telescopic speed adjustment device is also included. The telescopic speed adjustment device is connected to the telescopic device 2 and can adjust the telescopic speed of the telescopic device 2.

[0028] In this specific embodiment, a guiding device is also included. The guiding device is fixedly connected to the inclined pipe 1. The output end of the telescopic device 2 is connected to the guiding device and can slide relative to the guiding device in the first direction. The guiding device can guide the extension and retraction of the telescopic device 2 to ensure that the discharge baffle 3 remains smooth when moving up and down and will not deviate.

[0029] In this specific embodiment, the guiding device includes a baffle 9, which is fixedly connected to the outside of the opening 101 of the inclined pipe 1. The baffle 9 is provided with a guide hole, and the feeding baffle 3 can pass through the guide hole and the opening 101 in sequence and extend into the inclined pipe 1. The telescopic device 2 is slidably connected to the guide hole in the first direction.

[0030] In this specific embodiment, it also includes a vertical pipe 6 and a hopper 5. The upper end of the vertical pipe 6 is fixedly connected to and communicates with the discharge port of the hopper 5, and the lower end of the vertical pipe 6 is fixedly connected to and communicates with the upper end of the inclined pipe 1. The telescopic device 2 is detachably fixedly connected to the vertical pipe 6, which facilitates the disassembly, vertical movement and position adjustment of the device.

[0031] Preferably, the telescopic device 2 is detachably and fixedly connected to the vertical device via the clamp device 10; the clamp device 10 includes two semi-rings rotatably connected by hinges 1001, the telescopic device 2 is fixedly connected to one of the semi-rings, and after the two semi-rings are fitted onto the vertical pipe 6, the two semi-rings are locked to tighten onto the vertical pipe 6. The semi-rings are stainless steel rings with a width of 7cm and a thickness of 1.5cm.

[0032] In this specific embodiment, a trigger switch 7 is also included, which is communicatively connected to the control device 4. The trigger switch 7 enables the metering and discharging device 100 to start or stop working. When it is started, the control device 4 controls the telescopic device 2 to extend and retract periodically at a set time interval.

[0033] In this specific embodiment, the width (a) of the opening 101 is not greater than the minimum external dimensions of the material, ensuring that the granular material will not spill from the gap of the opening 101 during the subsequent lifting and lowering of the feeding baffle 3. For granular materials with a diameter of about 2 mm and uniform size, the width of the opening 101 is preferably 2 mm.

[0034] In this specific embodiment, the telescopic speed adjustment device is a throttle valve 8.

[0035] In this specific embodiment, the feeding baffle 3 is a stainless steel sheet with a thickness of 1.8mm, and the baffle 9 is a stainless steel baffle with a length (b) of 5cm and a width (c) of 1cm. The inner diameter of the guide hole is 10mm.

[0036] In this specific embodiment, the length of the opening 101 is about half the outer diameter of the pipe, and the discharge baffle 3 can fit tightly with the inner wall portion below the opening 101 of the inclined pipe 1, and can move up and down at the opening 101.

[0037] In this specific embodiment, the telescopic device 2 includes a cylinder, a solenoid valve 14, and an air source. The cylinder and the air source are connected via the solenoid valve 14. The solenoid valve 14 can change the airflow direction entering the cylinder to switch between extension and retraction. The control device 4 is signal-connected to the solenoid valve 14. In this specific embodiment, the telescopic speed adjustment device includes one or two throttle valves 8. At least one of the gas inlets and outlets of the two chambers of the cylinder can be connected to the throttle valve 8, which can adjust the air intake of the corresponding chamber. A cylinder Y-type connector is connected above the guide hole. An adjustable stroke cylinder of model SCJ32X150-50S is mounted above the Y-type connector. This cylinder is equipped with two throttle valves 8 of model SL8-M5, which can control the air intake of the upper and lower chambers respectively, improving the flexibility of adjustment.

[0038] In this specific embodiment, the control device 4 uses a time delay relay to time and control the time interval.

[0039] In this specific embodiment, the trigger switch 7 is a diffuse reflection photoelectric switch.

[0040] In this specific embodiment, a small iron plate with a length of 255mm and a width of 170mm is installed on the cylinder base. This small iron plate is used to install and fix the control system of the cylinder device. The control system includes a control panel 12, a power switch 13 (used to control the opening and closing of the control system), a triggerable delay time relay (the delay time is adjustable from 1 second to 999 seconds), a diffuse reflection photoelectric switch (the detection distance is 1-5cm), and a solenoid valve 14.

[0041] Example 2 This embodiment provides a metering and discharging method based on the metering and discharging device 100 in Embodiment 1, including the following steps: Material in the hopper 5 enters the inclined pipe 1; the telescopic device 2 is periodically extended and retracted by the control device 4 at set time intervals. The control method includes: S1, the telescopic device 2 is retracted by the control device 4 to move the discharge baffle 3 to the discharging position, allowing the material to pass through the gap between the discharge baffle 3 and the inner wall of the inclined pipe 1 for uniform discharging (within the working cycle, the amount of material passing through in any time interval of the same length is the same); S2, after the discharging reaches a first set time, the telescopic device 2 is extended by the control device 4 to move the discharge baffle 3 to the stop discharging position to stop discharging and maintain the stop discharging for a second set time; steps S1 and S2 are repeated sequentially.

[0042] It should be noted that only one type of material is fed each time to ensure uniform feeding.

[0043] The material feeding operation process in this embodiment is as follows: During material discharge, first connect the filling bag to the discharge port 11. The operator lightly touches or swipes the diffuse reflection photoelectric switch on the panel. At this time, the time delay relay is activated, and the normally open contact of the time delay relay closes to activate the solenoid valve 14, which in turn controls the cylinder to start working. The cylinder rod moves upward instantaneously, pulling the discharge baffle 3, opening the discharge port to begin discharging. Since the material density, weight, and other characteristics of each granulator are different during production, an electronic scale can be used to assist in weighing during the first discharge. The time delay relay is adjusted to the discharge time required for each bag of material. After the time delay relay reaches the required time, it controls the cylinder to push the discharge baffle 3 back to its initial position in the pipeline, closing the discharge port, thus ending one discharge process. To ensure accurate metering of each bag of material, a delay time relay allows for microsecond-level adjustment and control. The cylinder body is equipped with two adjustable throttle valves 8. During the initial calibration of each bag of granules, if the weight differs by a few grams, the throttle valve 8 knob on the upper side of the cylinder can be slightly tightened clockwise to slow the closing speed of the discharge baffle 3, thus compensating for the missing weight. Conversely, if the weight is a few grams too high during the initial calibration, the throttle valve 8 knob on the upper side of the cylinder needs to be rotated counterclockwise to speed up the closing speed of the discharge baffle 3, reducing the amount of material discharged slightly. This ensures that the weight of each bag of granules is accurate and consistent, achieving high precision in weight measurement.

[0044] This embodiment features an ingenious structural design, low cost, and simple operation. Compared to traditional feeding structures, operators only need to touch a switch to accurately feed each bag of material, significantly reducing labor intensity. Simultaneously, this device significantly improves work efficiency, effectively avoids material spillage and waste, and reduces material loss, providing an efficient, precise, and economical solution for the feeding stage in the production of granular materials such as modified plastics.

[0045] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A metering and discharging device, characterized in that: Includes inclined pipes, telescopic devices, discharge baffles, and control devices, wherein: The inclined pipe is installed below the hopper, one end of the inclined pipe is connected to the hopper, and the other end of the inclined pipe extends away from the hopper. The inclined pipe is inclined relative to the vertical plane. An opening is provided on the surface of the inclined pipe near the hopper. One end of the discharge baffle passes through the opening and extends into the inclined pipe; The output end of the telescopic device is fixedly connected to the other end of the discharge baffle. The telescopic device can drive the discharge baffle to extend and retract along a first direction so that the discharge baffle is in a discharging state or a stopped discharging state. When the discharge baffle is in the discharging state, a gap is left between the outer wall of the discharge baffle and the inner wall of the inclined pipe for material to pass through. When the discharge baffle is in the stopped discharging state, the outer wall of the discharge baffle can contact the inner wall of the inclined pipe to prevent the material from being discharged from the port of the inclined pipe away from the hopper. The control device is signal-connected to the telescopic device, and the control device can control the telescopic device to extend or retract so that the feeding baffle is in the stopped feeding state or the feeding state.

2. A metering apparatus according to claim 1, wherein: The control device can control the telescopic device to extend or retract to a set position at a set speed. The control device can control the time interval between the start of a single extension action of the telescopic device and the end of the corresponding single extension holding action. The control device can control the time interval between the start of a single retraction action of the telescopic device and the end of the corresponding single retraction holding action.

3. A metering apparatus as claimed in claim 1, wherein: The telescopic device can drive the discharge baffle to extend and retract in the vertical direction.

4. A metering apparatus as claimed in claim 1, wherein: It also includes a telescopic speed adjustment device, which is connected to the telescopic device and can adjust the telescopic speed of the telescopic device.

5. A metering apparatus as claimed in claim 1, wherein: It also includes a guide device, which is fixedly connected to the inclined pipe, and the telescopic device is connected to the guide device and is capable of relative sliding with the guide device along the first direction.

6. A metering apparatus as claimed in claim 1, wherein: It also includes a vertical pipe and the hopper, the upper end of the vertical pipe is fixedly connected to and communicates with the discharge port of the hopper, the lower end of the vertical pipe is fixedly connected to and communicates with the upper end of the inclined pipe, and the telescopic device is detachably fixedly connected to the vertical pipe.

7. A metering apparatus as claimed in claim 1, wherein: It also includes a trigger switch, which is communicatively connected to the control device.

8. A metering apparatus as claimed in claim 1, wherein: The width of the opening is not greater than the minimum external dimensions of the material.

9. A metering apparatus as claimed in claim 4, wherein: The telescopic speed adjustment device is a throttle valve.

10. A metering apparatus as claimed in claim 5, wherein: The guiding device includes a baffle plate, which is fixedly connected to the outside of the opening of the inclined pipe. The baffle plate is provided with a guide hole. The discharge baffle can pass through the guide hole and the opening in sequence and extend into the inclined pipe. The telescopic device is slidably connected to the guide hole along the first direction.

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