Quantitative discharging material bin and detection method thereof

Abstract

The invention discloses a quantitative discharging device for materials, and aims to provide a quantitative discharging material bin and a detection method thereof, and the quantitative discharging material bin is convenient in discharging, fixed in single-time discharging amount and capable of automatically detecting the blockage state of a discharging port. When the discharging rod is not pressed by the pressure of the material pushing cap end, the material distributing groove is located in the material bin body, after the discharging rod is pressed by the pressure from the material pushing cap end, the material distributing groove moves downwards to the discharging port to complete discharging, the discharging amount is limited through the material distributing groove, it is guaranteed that the discharging amount is the same when the material pushing cap is extruded every time, and the discharging efficiency is improved. And a material blocking part is arranged between the discharging opening and the stock bin body, so that when the discharging rod moves downwards, the material distribution grooves separately pass through the stock bin body, the material blocking part and the discharging opening, the situation that the material distribution grooves communicate with the stock bin body and the discharging opening, and the discharging accuracy is affected is prevented.

Description

Technical Field

[0001] This invention relates to a quantitative material discharging device, and more specifically, to a quantitative material discharging silo and its detection method. Background Technology

[0002] During small-batch, small-scale experiments in the laboratory, it is necessary to transfer and add some reagents. The material silo generally includes a silo body, a discharge port, and a control switch for controlling the discharge. In order to facilitate operation by staff and to accommodate the transportation of small-volume materials, the material silo is usually designed to be small so that staff can easily pick up and use it.

[0003] Currently, material silos on the market are difficult to control in terms of discharge volume during use. Usually, operators need to adjust the discharge volume by controlling the opening time of the discharge port based on their own judgment. This results in large fluctuations in the discharge volume, making it difficult to achieve precise control. This makes the material silos unsuitable for working environments with high precision requirements. In addition, some materials adhere to the inner wall of the discharge port when passing through it, causing blockages, reducing discharge efficiency and affecting the accuracy of discharge. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a material silo with convenient discharge, fixed discharge amount per batch, and automatic detection of blockage at the discharge port, as well as a detection method thereof.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a material silo for quantitative discharge, comprising a silo body and a silo cover disposed on the top of the silo body, wherein a discharge rod is also provided in the silo body, a spring cover is provided between the discharge rod and the silo cover, a return spring is provided inside the spring cover, the return spring is configured to allow the discharge rod to move along its central axis in the silo body, and a distribution groove is provided at the bottom of the discharge rod, the distribution groove being used to limit the single discharge amount of the material silo.

[0006] The present invention is further configured such that: the bottom of the hopper is provided with a discharge port, and the upper end of the discharge port is also provided with a baffle, and the height of the baffle is greater than or equal to the width of the distribution trough.

[0007] The present invention is further configured such that: a feed inlet extends from the side wall of the main silo, and a feed cover is provided on the feed inlet.

[0008] Preferably, the top of the feeding rod is provided with a pusher cap, and a reserved gap is provided between the pusher cap and the hopper cover. The reserved gap is used to allow the pusher cap to move downward on the hopper cover and drive the feeding rod through the baffle part into the discharge port, and the width of the reserved gap is greater than or equal to the height of the baffle part.

[0009] This application also provides a detection method for a material silo with quantitative discharge, which further includes a detection device installed in the discharge port and a central control device electrically connected to the detection device. The detection device includes an infrared sensor, which is configured to disconnect the circuit when sensing material. The detection method includes the following steps: S1, checking the discharge port to determine the blockage of the discharge port.

[0010] S2. Press the push cap to make the material bin complete one discharge. After the infrared sensor senses the material passing through, it disconnects the circuit. At the same time, the central control device records the proportion of the circuit energization time within the total time in a single pulse cycle during this discharge, that is, the circuit duty cycle during this discharge, and records it as the initial blockage value X.

[0011] S3. After time period T, press the push cap again to make the material bin complete one discharge. The central control device records the circuit duty cycle during this discharge as X1.

[0012] S4. Detect X1. If X1≤xa, it is determined that there is enough material in the hopper and the process jumps to S5 to continue detection. Otherwise, if X>xa, it is determined that the discharge did not reach the single discharge value and there is insufficient material in the hopper. The central control device notifies the staff to add material.

[0013] S5. Compare X1 with X. If X1 > X, it is determined that the degree of blockage at the discharge port has decreased. The central control device updates X1 to the initial blockage value X and jumps back to S3 to detect again. Otherwise, if X1 < X, it jumps to S6 to continue detection.

[0014] S6. The central control device checks X1 again. If X1 ≤ 0.2, it is determined that the outlet blockage is relatively serious. The central control device notifies the staff to clean the outlet. Conversely, if X1 > 0.2, it is determined that the outlet blockage is relatively minor. The device jumps back to S3 to check again.

[0015] Preferably, step S5 further includes the calculation of the degree of blockage at the discharge port, including the following steps: S51, the central control device calculates the difference between X1 and X. If X-X1≥0.25, it is determined that the blockage value at this discharge time has increased significantly compared with the initial blockage value, and the central control device notifies the staff to add material. Conversely, if X-X1≤0.25, it is determined that the increase in the blockage value at this discharge time is small, and the central control device records the blockage value at this time.

[0016] S52. The central control device detects the data center. If the number of blocked data values ​​in the data center is 5, then delete the minimum value among X1 to X5; otherwise, add the data.

[0017] By adopting the above technical solution, the following benefits are achieved: 1. By providing a material distribution groove inside the feeding rod, when the feeding rod is not pressed down by the pressure of the pusher cap, the material distribution groove is inside the hopper. The material enters the interior of the material distribution groove under the action of gravity. When the feeding rod is subjected to pressure from the pusher cap, the material distribution groove moves downward to the discharge port to complete the discharge. The amount of material discharged is limited by the material distribution groove, ensuring that the amount of material discharged is the same each time the pusher cap is squeezed.

[0018] 2. Furthermore, to ensure the discharge volume during the discharge process, a baffle is provided between the discharge port and the hopper body, and the height of the baffle is greater than or equal to the width of the distribution trough. A reserved gap is also provided between the pusher cap and the hopper cover. This reserved gap allows the pusher cap to move downwards on the hopper cover and drive the discharge rod through the baffle into the discharge port. The width of the reserved gap is greater than or equal to the height of the baffle. This ensures that when the discharge rod moves downwards, the distribution trough passes through the hopper body, the baffle, and the discharge port separately. The distribution trough as a whole will not be simultaneously located within the hopper body and the discharge port, preventing the distribution trough from connecting the hopper body and the discharge port, which could lead to material leakage from the hopper body and affect the accuracy of the discharge.

[0019] 3. Simultaneously, a detection device is also provided inside the discharge port. The detection device is used to disconnect the control circuit when the material passes through, so that a short circuit is formed for a period of time within the discharge pulse cycle, thereby obtaining the proportion of the circuit energized time within the pulse cycle, that is, the duty cycle of the circuit. Specifically, the faster the material passes through the discharge port, the larger the duty cycle of the circuit. Within the discharge port, the main factor affecting the material discharge speed is the diameter of the discharge port, that is, the degree of blockage of the discharge port. The greater the blockage of the discharge port, the smaller the diameter of the discharge port and the smaller the duty cycle of the circuit. Conversely, the less the blockage of the discharge port, the larger the diameter of the discharge port and the larger the duty cycle of the circuit.

[0020] 4. Furthermore, to facilitate the judgment and calculation of the blockage status inside the discharge hopper, the circuit duty cycle X at the initial discharge is set as the initial blockage value. Generally, the initial blockage value X is the maximum duty cycle value for each discharge. During subsequent discharges, if X1 > X, it is determined that the blockage degree at the discharge port has decreased, and the duty cycle for that discharge is recorded as the new initial blockage value. Simultaneously, to prevent insufficient material remaining in the hopper, resulting in insufficient discharge volume, a maximum value is set. This maximum value is the single discharge volume when the discharge port is completely unblocked. If the circuit duty cycle X1 at that discharge is greater than the set maximum value, it is determined that the discharge volume is less than the single discharge volume. Furthermore, if the circuit duty cycle X2 during the current discharge is less than the initial blockage value X, it indicates that the blockage at the discharge port has increased during the current discharge. To prevent the increase in blockage from being too large and affecting the discharge volume, the difference between X2 and X is limited. When the difference is greater than the limit, it is determined that too much material is adhering to the side wall of the discharge port, and the discharge port needs to be cleaned to improve the accuracy of the overall discharge volume. In addition, by recording X2 in the central control device and recording the blockage status of the discharge port through the change in the circuit duty cycle, it is convenient for the staff to change the material of the discharge port according to the current material properties, thereby improving the overall usage effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a specific structure of an embodiment of a quantitative discharge material silo and its detection method according to the present invention;

[0022] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of a quantitative material discharge silo and its detection method according to the present invention;

[0023] Figure 3 This is the first part of a flowchart illustrating the discharge port detection process of an embodiment of a quantitative discharge material silo and its detection method according to the present invention.

[0024] Figure 4 This is the second part of the discharge port detection flowchart of an embodiment of a quantitative discharge material silo and its detection method according to the present invention;

[0025] Figure 5 This is a flowchart illustrating the calculation of the degree of blockage at the discharge port in an embodiment of a quantitative discharge material silo and its detection method according to the present invention.

[0026] The attached diagram is labeled as follows: 1. hopper body; 2. hopper cover; 3. feed rod; 4. spring cover; 5. return spring; 6. feed trough; 7. discharge port; 8. baffle; 9. feed inlet; 10. feed cover; 11. push cap; 12. reserved gap. Detailed Implementation

[0027] Reference Figures 1 to 5 The present invention provides a further description of an embodiment of a quantitative material discharge silo and its detection method.

[0028] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0030] A quantitative material hopper includes a hopper body 1 and a hopper cover 2 disposed on the top of the hopper body 1. The hopper body 1 is also provided with a feeding rod 3. A spring cover 4 is provided between the feeding rod 3 and the hopper cover 2. A return spring 5 is provided inside the spring cover 4. The return spring 5 is configured to allow the feeding rod 3 to move along its central axis within the hopper body 1. A material distribution groove 6 is also provided at the bottom of the feeding rod 3. The material distribution groove 6 is used to limit the amount of material discharged from the hopper at one time.

[0031] The bottom of the silo is provided with a discharge port 7, and the upper end of the discharge port 7 is also provided with a baffle part 8. The height of the baffle part 8 is greater than or equal to the width of the distribution trough 6. The side wall of the main silo is provided with a feed port 9, and the feed port 9 is provided with a feed cover 10.

[0032] Preferably, the top of the feeding rod 3 is provided with a pusher cap 11, and a reserved gap 12 is provided between the pusher cap 11 and the hopper cover 2. The reserved gap 12 is used to allow the pusher cap 11 to move downward on the hopper cover 2 and drive the feeding rod 3 through the baffle part 8 into the discharge port 7, and the width of the reserved gap 12 is greater than or equal to the height of the baffle part 8.

[0033] By providing a material distribution groove 6 inside the feeding rod 3, when the feeding rod 3 is not pressed down by the pressure from the end of the pusher cap 11, the material distribution groove 6 is inside the hopper body 1. The material enters the interior of the material distribution groove 6 under the action of gravity. When the feeding rod 3 is subjected to pressure from the end of the pusher cap 11, the material distribution groove 6 moves downward to the discharge port 7 to complete the discharge. The amount of material discharged is limited by the material distribution groove 6, ensuring that the amount of material discharged is the same each time the pusher cap 11 is squeezed.

[0034] Furthermore, to ensure the discharge volume during the discharge process, a baffle 8 is provided between the discharge port 7 and the hopper body 1, and the height of the baffle 8 is greater than or equal to the width of the distribution trough 6. A reserved gap 12 is also provided between the pusher cap 11 and the hopper cover 2. The reserved gap 12 allows the pusher cap 11 to move downwards on the hopper cover 2 and drive the discharge rod 3 through the baffle 8 into the discharge port 7. The width of the reserved gap 12 is greater than or equal to the height of the baffle 8. This ensures that when the discharge rod 3 moves downwards, the distribution trough 6 passes through the hopper body 1, the baffle 8, and the discharge port 7 separately. The distribution trough 6 as a whole will not be simultaneously located in the hopper body 1 and the discharge port, preventing the distribution trough 6 from connecting the hopper body 1 and the discharge port, which could cause material leakage from the hopper body 1 and affect the accuracy of the discharge.

[0035] This application also provides a detection method for a material silo with quantitative discharge, which further includes a detection device installed in the discharge port and a central control device electrically connected to the detection device. The detection device includes an infrared sensor, which is configured to disconnect the circuit when sensing material. The detection method includes the following steps: S1, checking the discharge port to determine the blockage of the discharge port.

[0036] S2. Press the push cap to make the material bin complete one discharge. After the infrared sensor senses the material passing through, it disconnects the circuit. At the same time, the central control device records the proportion of the circuit energization time within the total time in a single pulse cycle during this discharge, that is, the circuit duty cycle during this discharge, and records it as the initial blockage value X.

[0037] S3. After time period T, press the push cap again to make the material bin complete one discharge. The central control device records the circuit duty cycle during this discharge as X1.

[0038] S4. Detect X1. If X1≤xa, it is determined that there is enough material in the hopper and the process jumps to S5 to continue detection. Otherwise, if X>xa, it is determined that the discharge did not reach the single discharge value and there is insufficient material in the hopper. The central control device notifies the staff to add material.

[0039] S5. Compare X1 with X. If X1 > X, it is determined that the degree of blockage at the discharge port has decreased. The central control device updates X1 to the initial blockage value X and jumps back to S3 to detect again. Otherwise, if X1 < X, it jumps to S6 to continue detection.

[0040] S6. The central control device checks X1 again. If X1 ≤ 0.2, it is determined that the outlet blockage is relatively serious. The central control device notifies the staff to clean the outlet. Conversely, if X1 > 0.2, it is determined that the outlet blockage is relatively minor. The device jumps back to S3 to check again.

[0041] Preferably, step S5 further includes the calculation of the degree of blockage at the discharge port, including the following steps: S51, the central control device calculates the difference between X1 and X. If X-X1≥0.25, it is determined that the blockage value at this discharge time has increased significantly compared with the initial blockage value, and the central control device notifies the staff to add material. Conversely, if X-X1≤0.25, it is determined that the increase in the blockage value at this discharge time is small, and the central control device records the blockage value at this time.

[0042] S52. The central control device detects the data center. If the number of blocked data values ​​in the data center is 5, then delete the minimum value among X1 to X5; otherwise, add the data.

[0043] By providing a detection device within the discharge port 7, the detection device disconnects the control circuit when material passes through, creating a short circuit for a period of time within the discharge pulse cycle. This allows the measurement of the circuit's energized time within the pulse cycle, i.e., the circuit's duty cycle. Specifically, the faster the material passes through the discharge port 7, the larger the circuit's duty cycle. Within the discharge port 7, the main factor affecting the material discharge speed is the diameter of the discharge port 7, i.e., the degree of blockage. The greater the blockage of the discharge port 7, the smaller its diameter and the smaller the circuit's duty cycle; conversely, the less the blockage, the larger its diameter and the larger the circuit's duty cycle.

[0044] Furthermore, to facilitate the judgment and calculation of the blockage status inside the discharge hopper, the circuit duty cycle X at the initial discharge is set as the initial blockage value. Generally, the initial blockage value X is the maximum duty cycle value for each discharge. During subsequent discharges, if X1 > X, it is determined that the blockage degree of discharge port 7 has decreased, and the duty cycle of that discharge is recorded as the new initial blockage value. Simultaneously, to prevent insufficient remaining material in the hopper 1, resulting in insufficient discharge volume, a maximum value is set. This maximum value is the single discharge volume of discharge port 7 when it is completely unblocked. If the circuit duty cycle X1 at that discharge is greater than the set maximum value, it is determined that the discharge volume is less than the single discharge volume. Furthermore, if the circuit duty cycle X2 during the current discharge is less than the initial blockage value X, it indicates that the blockage degree of the discharge port 7 has increased during the current discharge. To prevent the increase in the blockage degree from being too large and affecting the discharge volume, the difference between X2 and X is limited. When the difference is greater than the limit value, it is determined that too much material is adhering to the side wall of the discharge port 7, and the discharge port 7 needs to be cleaned to improve the accuracy of the overall discharge volume. In addition, by recording X2 in the central control device and recording the blockage state of the discharge port 7 through the change in the circuit duty cycle, it is convenient for the staff to change the material of the discharge port 7 according to the current material properties, thereby improving the overall usage effect.

[0045] For example, a material is prepared to be discharged from the discharge hopper. When the discharge port 7 is completely unblocked, the circuit duty cycle for a single discharge is measured to be 0.8. The push cap 11 is pressed, causing the material distribution groove 6 of the feed rod 3 to enter the discharge port 7. Simultaneously, the detection device measures this circuit duty cycle as X, which is recorded as the initial blockage value of the material hopper. The push cap is pressed again, and the circuit duty cycle at this time is recorded as X1. If X1 > X, it indicates that the blockage degree of the discharge port 7 has decreased compared to the initial discharge. The central control device replaces the original initial blockage value X with... If X1 is replaced by X, then if X1 < X, it means that some material adheres to the inner wall of the discharge port 7 during this discharge. At the same time, by recording the difference between X1 and X, if X - X1 ≥ 0.25, it means that more material adheres to the side wall of the discharge port 7, resulting in a smaller discharge volume. Staff need to intervene and clean the discharge port 7. Furthermore, by setting the minimum duty cycle of the circuit of the discharge port 7 to 0.2, when the central control device detects that the current circuit duty cycle is 0.2, it means that the blockage is serious and the discharge port 7 needs to be cleared.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A material bin for quantitative discharge, comprising a bin body (1) and a bin cover (2) arranged on the top of the bin body (1), characterized in that, The hopper body (1) is further provided with a discharging rod (3), the discharging rod (3) and the hopper cover (2) are provided with a spring cover (4), the spring cover (4) is provided with a reset spring (5), the reset spring (5) is configured to allow the discharging rod (3) to move along the axis direction in the hopper body (1), the bottom of the discharging rod (3) is further provided with a distribution chute (6), and the distribution chute (6) is used to limit the single discharging amount of the material hopper.

2. A bin for dosed discharge according to claim 1, characterized in that The bottom of the hopper is provided with a discharging port (7), the upper end of the discharging port (7) is further provided with a material blocking part (8), and the height of the material blocking part (8) is greater than the width of the distribution chute (6).

3. A bin for dosed discharge according to claim 1, characterized in that The main hopper side wall is provided with a feeding port (9) extending upward, and the feeding port (9) is provided with a feeding cover (10).

4. A bin for dosed discharge according to claim 2, characterized in that The top of the discharging rod (3) is provided with a pushing cap (11), the pushing cap (11) and the hopper cover (2) are further provided with a reserved gap (12), the reserved gap (12) is used to allow the pushing cap (11) to move downward on the hopper cover (2) and drive the discharging rod (3) to pass through the material blocking part (8) and enter the discharging port (7), and the width of the reserved gap (12) is greater than the height of the material blocking part (8).

5. A method of detecting a material bin suitable for quantitative discharge according to claims 1 to 4, characterized in that, Further comprising a detection device arranged in the discharging port and a central control device electrically connected with the detection device, the detection device comprises an infrared sensor configured to open the circuit when sensing the material, and the detection method comprises the following steps: S1, checking the discharging port to judge the blockage condition of the discharging port; S2, pressing the pushing cap to make the material hopper complete a discharging, the infrared sensor is disconnected after sensing the material, and the central control device records the ratio of the circuit energization time in the total time in a single pulse cycle, that is, the circuit duty cycle of this discharging, and records it as the initial blockage value X, and records the circuit duty cycle when the discharging port is completely unblocked as Xa; S3, after T time period, press the pushing cap again to make the material hopper complete a discharging, and the central control device records the circuit duty cycle of this discharging as X1; S4, detecting X1, if X1≤Xa, it is judged that the material in the hopper body is sufficient, and the detection continues to S5, otherwise, if X>Xa, it is judged that the single discharging value of this discharging cannot be reached, and the material in the hopper body is insufficient, and the central control device informs the staff to add material; S5, comparing X1 and X, if X1>X, it is judged that the blockage degree of the discharging port is reduced, the central control device updates X1 as the initial blockage value X, and returns to S3 for detection again, otherwise, if X1≤X, it continues to S6 for detection; S6, the central control device detects X2 again, if X2≤0.2, it is judged that the discharging port is seriously blocked, the central control device informs the staff to clean the discharging port, otherwise, if X2>0.2, it is judged that the blockage degree of the discharging port is small, and returns to S3 for detection again.

6. The detection method for a quantitatively discharging material silo according to claim 5, characterized in that, The step S5 further comprises calculation of the degree of blockage of the discharge outlet, comprising the following steps: S51, the central control device calculates the difference between X1 and X, if X-X1≥0.25, it is judged that the blockage value during this time of discharging is greatly increased compared with the initial blockage value, the central control device informs the staff to add material, otherwise, if X-X1≤0.25, it is judged that the increase of the blockage value during this time of discharging is small, the central control device records the blockage value of this time; S52, the central control device detects the data center, if the number of blockage value data in the data center = 5, the minimum value in X1 to X5 is deleted, otherwise, the data is added.

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