Continuous powder batching device

Abstract

The invention relates to a continuous powder batching device. The continuous powder batching operation is achieved through the following method that S1, zero calibration is conducted after a starting signal is received; s2, setting n = 1, wherein n is the number of static weighing times; s3, judging the relationship between the real-time weighing amount An of the static scale and the weighing set upper limit A on the static scale, entering step S4 when An is less than A on, and entering step S5 when An is greater than or equal to A on; s4, starting the first batching device, and closing the first batching device until An is greater than or equal to A < upper >; s5, recording a weighing value An < upper > after the static scale finishes charging and is stable, judging a relationship between a real-time weighing amount B of the dynamic scale and a weighing lower limit B < lower > of the dynamic scale, when B is less than B < lower >, starting a second batching device, and when An is less than a weighing lower limit A < lower > of the static scale, closing the second batching device; and S6, executing the first order to complete the detection step, batching and dynamic scale calibration at the same time. According to the invention, the precision of continuous powder batching can be improved.

Description

Technical Field

[0001] The present invention relates to the field of batching, and particularly to a powder continuous batching device. Background Art

[0002] In the prior art, for the continuous batching of powder, dynamic weighing is usually used for continuous batching. There are problems of low calibration accuracy and great calibration difficulty in the process of dynamic weighing continuous batching. At the same time, during the continuous batching process, manual material receiving is also required. After receiving and weighing the materials, they are compared with the measurement data of the dynamic scale, and then the dynamic scale is calibrated. In addition, the measurement deviation of the dynamic scale is large during the start-up and stop phases. At the same time, the small amount of manual material receiving is difficult to offset the measurement deviation that appears during the start-up and stop phases, resulting in a large measurement deviation of the dynamic scale during calibration, thus making the batching accuracy low during the production process, and further leading to a reduction in product quality. In view of the problem of low continuous batching accuracy of the dynamic scale, the common practice in the prior art is to add a transition bin at the front end of the dynamic scale and add a weighing device on the transition bin. This method can improve the calibration accuracy during dynamic calibration, but the calibration amount is still small and it is difficult to offset the measurement deviation of the dynamic scale during the start-up and stop phases. As the production volume increases, this calibration accuracy will still cause a large weight deviation. In actual production, the weighing value of the transition bin is still dynamically fluctuating. Although the principle of static weighing is adopted, the materials are still in a dynamic flow state during the weighing process. By controlling the batching accuracy of the dynamic scale through the rate of decrease of the weighing value, its essence is still dynamic weighing. Although the calibration accuracy has been improved, it is still difficult to offset the measurement deviation that appears during the start-up and stop phases of the dynamic scale and will still cause a large batching weight deviation. In addition, since dynamic continuous batching is calculated proportionally, as the production volume continues to increase, the batching deviation is still a large quantity, which is not conducive to the refined control of costs. When the measurement exceeds the tolerance seriously during the production process, the entire batching system cannot automatically judge and give an alarm. Once an error occurs in the transition bin, the parameters of the dynamic scale will be forcibly adjusted with the wrong data, thus causing production accidents.

[0003] In view of this, the present invention provides a powder continuous batching device, which improves the calibration accuracy of the dynamic scale by setting a static scale and using the static scale to assist in calibrating the dynamic scale, thereby improving the batching accuracy and reducing the product quality fluctuation, and solving the problems of low calibration accuracy, low batching accuracy and large product quality fluctuation in dynamic continuous batching in the prior art. Summary of the Invention

[0004] The present invention aims to provide a powder continuous batching device to solve the deficiencies in the prior art. The technical problems to be solved by the present invention are achieved through the following technical solutions.

[0005] A continuous powder batching device comprises a powder storage bin, a first batching device and a mixer, wherein the improvement is that: it also comprises a static scale and a dynamic scale; the powder storage bin is used to store powder, and the lower part of the powder storage bin is connected to the first batching device; the first batching device is used to batch the powder in the powder storage bin into the static scale, and the end of the first batching device away from the powder storage bin is connected to the static scale; the static scale is used to statically weigh the powder and batch the powder into the dynamic scale, and the end of the static scale away from the first batching device is connected to the dynamic scale; the dynamic scale is used to control the batching speed and batch the powder into the mixer, and the end of the dynamic scale away from the static scale is connected to the mixer; the continuous powder batching operation is realized by the following method:

[0006] S1: Perform zero point calibration after receiving the start signal;

[0007] S2: Set n=1, where n is the number of static weighings;

[0008] S3: Determine the real-time weight of the static scale A n The upper limit of the static weighing is set to A 上 The relationship between n <A 上 Enter step S4 when A n ≥A 上 When entering step S5;

[0009] S4: Start the first batching device until A n ≥A 上 When the first batching device is closed;

[0010] S5: Record the static weighing weight after the material is added and stabilized A n上 , determine the real-time weighing weight B of the dynamic scale and the lower limit B of the dynamic scale 下 When B<B 下 When the second batching device is started, until A n Less than the lower limit of static weighing setting A 下 When the second batching device is closed;

[0011] S6: Execute the first order to complete the inspection steps, batching and dynamic weighing calibration at the same time.

[0012] Preferably, the static scale includes a weighing hopper connected to the first batching device, a first weighing sensor arranged beside the weighing hopper and supporting and weighing the weighing hopper, and a second batching device arranged below the weighing hopper and batching the powder to the dynamic scale.

[0013] Preferably, the static scale further includes a first weighing bracket, the first weighing sensor is disposed on the first weighing bracket, and the first weighing bracket is disposed on the dynamic scale.

[0014] Preferably, the dynamic scale includes a metering hopper connected to the static scale, a second weighing sensor disposed beside the metering hopper for supporting and weighing the metering hopper, and a third batching device disposed below the metering hopper for batching powder materials into the mixer.

[0015] Preferably, the dynamic scale further includes a second weighing bracket, the second weighing sensor is disposed on the second weighing bracket, and the second weighing bracket is disposed on a bearing base surface.

[0016] Preferably, the dynamic scale further includes a balance support disposed beside the metering hopper, the second weighing sensor is disposed below the balance support, and the second weighing sensor supports and weighs the metering hopper through the balance support.

[0017] Preferably, zero calibration includes the following steps:

[0018] S1-1: Close the first batching device and the second batching device, start the third batching device, run the third batching device idly, and display the real-time weighing weight B of the dynamic scale and the real-time flow rate Q of the dynamic scale in real time. After the real-time weighing weight B of the dynamic scale is stable, run for a set time;

[0019] S1-2: Manually calibrate the real-time weighing weight B of the dynamic scale = 0 and the real-time flow rate Q of the dynamic scale = 0.

[0020] Preferably, the first order completion detection step includes: when it is detected that the order is not completed, n is adjusted to n + 1, and return to step S3; when it is detected that the order is completed, the production ends.

[0021] Preferably, batching includes the following steps:

[0022] S6-2-1: Determine whether the third batching device is started. When the third batching device is started, enter step S6-2-2. When the third batching device is not started, determine the relationship between the real-time weighing weight B of the dynamic scale and the lower limit B of the weighing setting of the dynamic scale. When B ≥ B 下 of, when B ≥ B 下 , start the third batching device;

[0023] S6-2-2: Batch according to the flow rate Q 设定 and continuously carry out production;

[0024] S6-2-3: Execute the second order completion detection step;

[0025] S6-2-4: The production ends.

[0026] Preferably, the dynamic scale calibration includes the following steps:

[0027] S6-3-1: After closing the second batching device, record the weighing value A after the static scale discharging is completed and stabilized n下 , calculate the weighing value M of the static scale n , where M n = A n上 – A n下 , set the static scale weighing cumulative value M, M = M 1 + M 2 +…+ M n ;

[0028] S6-3-2: Record the dynamic scale weighing value B n and the dynamic scale cumulative batching quantity T n ;

[0029] S6-3-3: According to the static scale weighing cumulative value M, the dynamic scale weighing value B n and the dynamic scale cumulative batching quantity T n at the same time, calculate the batching weight deviation C between the static scale and the dynamic scale n , and the batching accuracy deviation D between the static scale and the dynamic scale n , where C n = M – T n - B n , D n =(T n + B n - M)÷ M;

[0030] S6-3-4: According to the batching weight deviation C between the static scale and the dynamic scale n and the batching accuracy deviation D between the static scale and the dynamic scale n adjust the dynamic scale correction coefficient K m , where the dynamic scale correction coefficient K m is used for adjusting the dynamic scale batching accuracy deviation, and the value range of m is a natural number greater than or equal to 0.

[0031] Preferably, adjust the dynamic scale correction coefficient K m , specifically including:

[0032] When |C n |> C or |D n |> D, adjust the dynamic scale correction coefficient K m to K m = K m-1 × M ÷(T n + B n ), where C is the dynamic scale batching weight deviation limit value, D is the dynamic scale batching accuracy deviation limit value, m represents the adjustment times of the correction coefficient, K0 For initializing the dynamic weighing correction coefficient, it is obtained from the dynamic weighing initialization calibration process before the system runs.

[0033] Preferably, for the dynamic weighing correction coefficient K m When adjusting, the measurement deviation δ is calculated simultaneously n =(T n +B n -M)÷M×100%, record and feedback δ n , set the allowable measurement deviation δ, when |δ n |>δ, a measurement fault alarm is given.

[0034] The present invention uses the static scale to assist in calibrating the dynamic scale and controls the total amount of batching through the static scale, thereby improving the batching accuracy and reducing the product quality fluctuation. After each weighing by the static scale, the batching deviation is calculated and fed back, so that the batching deviation can be understood in time, and production and / or quality accidents caused by large deviation and long-term production due to measurement faults can be avoided. The static scale only needs weights or accurately weighted objects for calibration. By calibrating the dynamic scale through the static scale, the calibration time and calibration cost can be reduced. After each weighing by the static scale, the static scale is calibrated from two dimensions of proportional deviation and weight deviation. In the early stage of production, the proportional deviation can better control the batching accuracy relative to the weight deviation. As the production volume increases, the weight deviation can better control the batching accuracy relative to the proportional deviation. The present invention detects the batching accuracy through these two dimensions of proportional deviation and weight deviation during the production process and calibrates the dynamic scale. During the production process of the present invention, as the production volume increases and the cumulative batching volume increases, the dynamic scale is calibrated through the accumulated value of the static scale. As the calibration amount increases, the calibration accuracy is further improved.

[0035] The present invention adopts a method of calibrating the dynamic scale with a static scale. The static scale has high accuracy, realizes the rapid and simple calibration of the dynamic scale, and does not require manual material receiving and weighing. At the same time, during the production process, the weighing value of the static scale is calculated cumulatively, and the dynamic scale is further calibrated through the accumulated value. The calibration amount is large, offsetting the large deviation of the dynamic scale measurement in the starting stage. The dynamic scale stop stage is not within the calibration time. The present invention calibrates the dynamic scale each time the static scale weighs and feeds back the deviation between the dynamic scale and the static scale, sets the allowable deviation value, and gives an alarm prompt when the feedback deviation exceeds the allowable deviation, avoiding the problem of easy production accidents after measurement faults. The present invention adopts double detection of the ratio of the weighing deviation between the static scale and the dynamic scale to the batching amount and the deviation value between the static scale and the dynamic scale, dynamically calibrates the dynamic scale during the production process, and realizes continuous batching with the static scale weighing cooperating with the dynamic scale weighing, so that the continuous batching measurement accuracy is close to the static scale measurement accuracy.

[0036] Compared with the prior art, the present invention can improve the accuracy of continuous powder batching, achieve refined continuous batching, thereby ensuring the stability of product quality; at the same time, the refined continuous batching can strictly control the product ratio, which helps to improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural diagram of the present invention;

[0038] Figure 2 is a schematic structural diagram of the static scale in the present invention;

[0039] Figure 3 is a schematic structural diagram of the dynamic scale in the present invention;

[0040] Figure 4 is a flow chart of the present invention;

[0041] Figure 5 is a flow chart for initial calibration of the dynamic scale before the system operation of the present invention;

[0042] Figure 6 is a zero calibration flow chart of the present invention;

[0043] The reference numerals in the drawings are as follows: 1 - powder storage bin; 2 - first batching device; 3 - static scale; 4 - dynamic scale; 5 - mixer; 3.1 - weighing hopper; 3.2 - first weighing sensor; 3.3 - first weighing support; 3.4 - second batching device; 4.1 - metering hopper; 4.2 - balance support; 4.3 - second weighing sensor; 4.4 - second weighing support; 4.5 - third batching device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0045] Refer to Figures 1 to 6As shown, a continuous powder batching device comprises a powder storage bin 1, a first batching device 2 and a mixer 5, and the improvement thereof is that: it also comprises a static scale 3 and a dynamic scale 4; the powder storage bin 1 is used to store powder, and the lower part of the powder storage bin 1 is connected to the first batching device 2; the first batching device 2 is used to batch the powder in the powder storage bin 1 into the static scale 3, and the end of the first batching device 2 away from the powder storage bin 1 is connected to the static scale 3; the static scale 3 is used to statically weigh the powder and batch the powder into the dynamic scale 4, and the end of the static scale 3 away from the first batching device 2 is connected to the dynamic scale 4; the dynamic scale 4 is used to control the batching speed and batch the powder into the mixer 5, and the end of the dynamic scale 4 away from the static scale 3 is connected to the mixer 5; the continuous powder batching operation is realized by the following method:

[0046] S1: After receiving the start signal, zero point calibration is performed, which includes the following steps:

[0047] S1-1: turn off the first batching device and the second batching device, start the third batching device, run the third batching device idly, display the real-time weighing weight B and the real-time flow rate Q of the dynamic scale in real time, and run the dynamic scale for a set time after the real-time weighing weight B stabilizes. Since the third batching device is run idly, after running for a set time, the real-time weighing weight B and the real-time flow rate Q of the dynamic scale should both be 0.

[0048] S1-2: Manually calibrate the real-time weighing weight B of the dynamic scale = 0, and the real-time flow rate Q of the dynamic scale = 0. At this point, the zero point calibration is completed.

[0049] S2: Set n=1, where n is the number of static weighings;

[0050] S3: Determine the real-time weight of the static scale A n The upper limit of the static weighing is set to A 上 The relationship between n <A 上 When the powder in the static scale is less than the set upper limit, it is necessary to add material to the static scale, so the process goes to step S4; when A n ≥A 上 When the powder in the static scale is greater than the set upper limit, there is no need to add material to the static scale, so the process goes to step S5;

[0051] S4: Start the first batching device until A n ≥A 上 When the first batching device is closed;

[0052] S5: Record the static weighing weight after the material is added and stabilized A n上 , determine the real-time weighing weight B of the dynamic scale and the lower limit B of the dynamic scale下 When B < B 下 At this time, the powder in the dynamic scale is insufficient, so the second batching device needs to be started until A n is less than the lower limit A of the static scale weighing setting 下 When it is, that is, when the powder in the static scale is less than the lower limit, the second batching device is closed;

[0053] S6: At the same time, perform the first order completion detection step, batching, and dynamic scale calibration.

[0054] Among them, the first order completion detection step includes: when it is detected that the order is not completed, n is adjusted to n + 1, and return to step S3; when it is detected that the order is completed, the production ends. Such a setting can replenish the materials in the hopper at any time during the batching process.

[0055] Among them, the batching includes the following steps:

[0056] S6-2-1: Judge whether the third batching device is started. When the third batching device is started, enter step S6-2-2. When the third batching device is not started, judge the relationship between the real-time weighing value B of the dynamic scale and the lower limit B of the dynamic scale weighing setting 下 When B ≥ B 下 At this time, start the third batching device;

[0057] S6-2-2: Batch according to the flow rate Q 设定 and continuously carry out production;

[0058] S6-2-3: Execute the second order completion detection step;

[0059] S6-2-4: The production ends.

[0060] In addition, the batching step may also include:

[0061] Select the batching mode. In automatic mode, automatically start the third batching device to batch according to the flow rate Q 设定 ; in manual mode, manually start the third batching device to batch according to the flow rate Q 设定 and display the real-time cumulative batching amount T of the dynamic scale, the real-time weighing value B of the dynamic scale, and the real-time flow rate Q of the dynamic scale in real time.

[0062] The dynamic scale calibration includes the following steps:

[0063] S6-3-1: After closing the second batching device, record the weighing value A after the static scale unloading is completed and stable n下 , calculate the weighing value M of the static scale n , where M n = A n上 – A n下 , set the static scale weighing cumulative value M, M = M1 +M 2 +…+M n ;

[0064] S6-3-2: Record the dynamic weighing value B n and the cumulative batching quantity T of the dynamic scale n ;

[0065] S6-3-3: Calculate the weighing weight deviation C between the static scale and the dynamic scale, n the dynamic weighing value B n and the cumulative batching quantity T of the dynamic scale n , and the weighing accuracy deviation D between the static scale and the dynamic scale n , where C n = M – T n - B n , D n = (T n + B n - M) ÷ M;

[0066] S6-3-4: Adjust the correction coefficient K of the dynamic scale n according to the weighing weight deviation C between the static scale and the dynamic scale n and the weighing accuracy deviation D between the static scale and the dynamic scale m , where the correction coefficient K of the dynamic scale m is used to adjust the weighing accuracy deviation of the dynamic scale, m represents the adjustment times of the correction coefficient, and the value range of m is a natural number greater than or equal to 0. K 0 is the initial correction coefficient of the dynamic scale, which is obtained from the initial calibration process of the dynamic scale before the system runs.

[0067] Adjust the correction coefficient K of the dynamic scale m , specifically including: when |C n | > C or |D n | > D, adjust the correction coefficient K of the dynamic scale m to K m = K m-1 × M ÷ (T n + B n ), where C is the limit value of the weighing weight deviation of the dynamic scale, D is the limit value of the weighing accuracy deviation of the dynamic scale, m represents the adjustment times of the correction coefficient, and K 0 is the initial correction coefficient of the dynamic scale, which is obtained from the initial calibration process of the dynamic scale before the system runs. It can be seen from the above formula that each adjustment of the correction coefficient K of the dynamic scale m is based on the previous K m-1Adjusted on the basis of this, and this application uses the static weighing cumulative weight value minus the dynamic weighing memory and the difference and ratio between the dynamic weighing cumulative batching value to make a double judgment, and corrects the dynamic weighing measurement coefficient, so that the dynamic weighing batching accuracy is approximately the same as the static weighing batching accuracy; in the early stage of production, the proportion deviation relative to the weight deviation can better control the batching accuracy. As the production volume increases, the weight deviation relative to the proportion deviation can better control the batching accuracy. Through the static weighing and dynamic weighing batching weight deviation C n And the static weighing and dynamic weighing batching accuracy deviation D n Detect the batching accuracy from two dimensions, which can take into account both the early stage and the late stage of batching, thereby improving the overall batching accuracy.

[0068] When adjusting the dynamic weighing correction coefficient K m At the same time, calculate the measurement deviation δ n =(T n +B n -M)÷M×100%, record and feedback δ n , set the allowable measurement deviation δ. When |δ n |>δ, a measurement failure alarm will be issued. When the deviation is large, the system will alarm to remind the operator.

[0069] Furthermore, the static scale 3 includes a weighing hopper 3.1 connected to the first batching device 2, a first weighing sensor 3.2 disposed beside the weighing hopper 3.1 to support and weigh the weighing hopper 3.1, and a second batching device 3.4 disposed below the weighing hopper 3.1 to batch powder materials to the dynamic scale 4.

[0070] Furthermore, the static scale 3 further includes a first weighing bracket 3.3, the first weighing sensor 3.2 is disposed on the first weighing bracket 3.3, and the first weighing bracket 3.3 is disposed on the dynamic scale 4.

[0071] Furthermore, the dynamic scale includes a metering hopper 4.1 connected to the static scale 3, a second weighing sensor 4.3 disposed beside the metering hopper 4.1 to support and weigh the metering hopper 4.1, and a third batching device 4.5 disposed below the metering hopper 4.1 to batch powder materials to the mixer 5.

[0072] Furthermore, the dynamic scale 4 further includes a second weighing bracket 4.4, the second weighing sensor 4.3 is disposed on the second weighing bracket 4.4, and the second weighing bracket 4.4 is disposed on the bearing surface.

[0073] Further, the dynamic scale 4 further includes a balance support 4.2. The balance support 4.2 is arranged beside the metering hopper 4.1. The second weighing sensor 4.3 is arranged below the balance support 4.2. The second weighing sensor 4.3 supports and weighs the metering hopper 4.1 through the balance support 4.2.

[0074] In this embodiment, the powder storage bin 1 is used to store powder. The first batching device 2 is used to batch the powder in the powder storage bin 1 into the static scale 3. The static scale 3 is used for static weighing of the powder and, after the weighing is completed, batches the powder into the dynamic scale 4 through the second batching device 3.4. The dynamic scale 4 is used to control the batching speed and batches the powder into the mixer 5 through the third batching device 4.5, thereby realizing continuous batching of the powder. The weighing hopper 3.1 is used to store powder and is supported and weighed by the first weighing sensor 3.2. The weighing hopper 3.1 is connected to the first batching device 2. The first weighing sensor 3.2 is arranged on the first weighing bracket 3.3. The second batching device 3.4 is installed below the weighing hopper 3.1 and is used to batch the powder in the weighing hopper 3.1 into the metering hopper 4.1 of the dynamic scale 4. The static scale 3 is arranged on the second weighing bracket 4.4 of the dynamic scale 4 through the first weighing bracket 3.3. The metering hopper 4.1 is used to store powder. The metering hopper 4.1 is connected to the second batching device 3.4. The metering hopper 4.1 and the third batching device 4.5 are arranged on the balance support 4.2. A second weighing sensor 4.3 is arranged below the balance support 4.2 and is arranged on the second weighing bracket 4.4 through the second weighing sensor 4.3. The third batching device 4.5 is installed below the metering hopper 4.1 and is used to batch the powder in the metering hopper 4.1 into the mixer 5. The dynamic scale 4 is arranged on the load-bearing base surface through the second weighing bracket 4.4.

[0075] In this embodiment, the static scale 3 is used to assist in calibrating the dynamic scale 4, and the total amount of batching is controlled by the static scale 3, thereby improving the batching accuracy and reducing the product quality fluctuation. After each weighing by the static scale 3, the batching deviation is calculated and fed back, so that the batching deviation can be understood in time, and production and / or quality accidents caused by large deviation and long-term production due to metering failures can be avoided. The static scale 3 can be calibrated only with weights or objects of accurate weight. By calibrating the dynamic scale 4 with the static scale 3, the calibration time and calibration cost can be reduced. After each weighing, the static scale 3 is calibrated from two dimensions of proportional deviation and weight deviation. In the early stage of production, the batching accuracy can be better controlled by the proportional deviation relative to the weight deviation. As the production volume increases, the weight deviation relative to the proportional deviation can better control the batching accuracy. In this embodiment, during the production process, the batching accuracy is detected from these two dimensions of proportional deviation and weight deviation, and the dynamic scale 4 is calibrated. In this embodiment, during the production process, as the production volume increases and the cumulative batching amount increases, the dynamic scale 4 is calibrated by the cumulative value of the static scale 3. As the calibration amount increases, the calibration accuracy is further improved.

[0076] This embodiment adopts a method of calibrating the dynamic scale with a static scale. The static scale has high accuracy, realizes the fast and simple calibration of the dynamic scale, and does not require manual material receiving and weighing. At the same time, during the production process, the weighing value of the static scale is calculated cumulatively, and the dynamic scale is further calibrated by the cumulative value. The calibration amount is large, offsetting the large deviation of the dynamic scale measurement in the startup stage. The dynamic scale stop stage is not within the calibration time. This embodiment adopts the static scale to calibrate the dynamic scale each time it weighs and feeds back the deviation between the dynamic scale and the static scale, and sets the allowable deviation value. When the feedback deviation exceeds the allowable deviation, an alarm prompt is given to avoid the problem of production accidents that are likely to occur after metering failures. This embodiment adopts double detection of the ratio of the weighing deviation between the static scale and the dynamic scale to the batching amount and the deviation value between the static scale and the dynamic scale, dynamically calibrates the dynamic scale during the production process, and realizes continuous batching by the weighing of the static scale in cooperation with the weighing of the dynamic scale, so that the continuous batching measurement accuracy is close to the static scale measurement accuracy.

[0077] This embodiment can improve the accuracy of continuous powder batching, realize fine continuous batching, and thus ensure the stability of product quality. At the same time, fine continuous batching can strictly control the product ratio, which helps to improve the product quality.

[0078] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0079] Note that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments described in accordance with the present application. As used herein, unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and / or combinations thereof.

[0080] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that these terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0081] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0082] For ease of description, spatial relative terms such as "above", "on top of", "on the upper surface", "above", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "on top of" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the corresponding interpretations of the spatial relative descriptions used herein will be made.

[0083] In the detailed description above, reference has been made to the accompanying drawings, which form a part hereof. In the drawings, like reference numerals typically identify like components, unless the context indicates otherwise. The illustrated embodiments described in the detailed specification, drawings, and claims are not meant to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0084] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A continuous powder batching device, comprising a powder storage bin (1), a first batching device (2) and a mixer (5), characterized in that: The invention also comprises a static scale (3) and a dynamic scale (4); the powder storage bin (1) is used for storing powder, and the lower part of the powder storage bin (1) is connected to the first batching device (2); the first batching device (2) is used for batching the powder in the powder storage bin (1) into the static scale (3), and the end of the first batching device (2) away from the powder storage bin (1) is connected to the static scale (3); the static scale (3) is used for statically weighing the powder and batching the powder into the dynamic scale (4), and the end of the static scale (3) away from the first batching device (2) is connected to the dynamic scale (4); the dynamic scale (4) is used for controlling the batching speed and batching the powder into the mixer (5), and the end of the dynamic scale (4) away from the static scale (3) is connected to the mixer (5); the continuous batching operation of the powder is realized by the following method: S1: Perform zero point calibration after receiving the start signal; S2: Set n=1, where n is the number of static weighings; S3: Determine the real-time weight of the static scale A n The upper limit of the static weighing is set to A 上 The relationship between n <A 上 Enter step S4 when A n ≥A 上 When entering step S5; S4: Start the first batching device until A n ≥A 上 When the first batching device is closed; S5: Record the static weighing weight after the material is added and stabilized A n上 , determine the real-time weighing weight B of the dynamic scale and the lower limit B of the dynamic scale 下 When B<B 下 When the second batching device is started, until A n Less than the lower limit of static weighing setting A 下 When the second batching device is closed; S6: Execute the first order to complete the inspection steps, batching and dynamic weighing calibration at the same time.

2. A powder continuous batching device according to claim 1, characterized in that: The static scale (3) comprises a weighing bucket (3.1) connected to the first batching device (2), a first weighing sensor (3.2) arranged beside the weighing bucket (3.1) and supporting and weighing the weighing bucket (3.1), and a second batching device (3.4) arranged below the weighing bucket (3.1) and batching powder to the dynamic scale (4); the static scale (3) also comprises a first weighing bracket (3.3), the first weighing sensor (3.2) is arranged on the first weighing bracket (3.3), and the first weighing bracket (3.3) is arranged on the dynamic scale (4).

3. A powder continuous batching device according to claim 1, characterized in that: The dynamic scale comprises a weighing hopper (4.1) connected to the static scale (3), a second weighing sensor (4.3) arranged beside the weighing hopper (4.1) and supporting and weighing the weighing hopper (4.1), and a third batching device (4.5) arranged below the weighing hopper (4.1) and batching powder into the mixer (5); the dynamic scale (4) also comprises a second weighing bracket (4.4), the second weighing sensor (4.3) is arranged on the second weighing bracket (4.4), and the second weighing bracket (4.4) is arranged on a load-bearing base surface.

4. A powder continuous batching device according to claim 3, characterized in that: The dynamic scale (4) further comprises a balancing support (4.2), wherein the balancing support (4.2) is arranged on the side of the weighing bucket (4.1), and the second weighing sensor (4.3) is arranged below the balancing support (4.2), and the second weighing sensor (4.3) supports and weighs the weighing bucket (4.1) through the balancing support (4.2).

5. A powder continuous batching device according to claim 1, characterized in that: Zero point calibration includes the following steps: S1-1: turn off the first batching device and the second batching device, start the third batching device, run the third batching device idly, display the real-time weighing weight B and the real-time flow rate Q of the dynamic scale in real time, and run the dynamic scale for a set time after the real-time weighing weight B is stable; S1-2: Manually calibrate the real-time weighing weight B of the dynamic scale = 0, and the real-time flow rate Q of the dynamic scale = 0.

6. A powder continuous batching device according to claim 1, characterized in that: The first order completion detection step includes: when it is detected that the order is not completed, n is adjusted to n+1, and returns to step S3; when it is detected that the order is completed, the production ends.

7. A powder continuous batching device according to claim 1, characterized in that: The batching process includes the following steps: S6-2-1: Determine whether the third batching device is started. When the third batching device is started, enter step S6-2-2. When the third batching device is not started, determine the real-time weighing weight B of the dynamic scale and the lower limit B of the dynamic scale. 下 When B≥B 下 When the third batching device is started; S6-2-2: By flow rate Q 设定 Carry out batching and continuous production; S6-2-3: Execute the second order completion detection step; S6-2-4: Production completed.

8. A powder continuous batching device according to claim 1, characterized in that: Dynamic scale calibration includes the following steps: S6-3-1: After closing the second batching device, record the weighing value A after the static weighing unloading is completed and stabilized n下 , calculate the static weighing value M n , where M n =A n上 –A n下 , set the static weighing cumulative value M, M = M1 + M2 + ... + M n ; S6-3-2: Record the dynamic weighing value B n And the dynamic weighing cumulative batching amount T n ; S6-3-3: Based on the static weighing cumulative value M and dynamic weighing value B at the same time n And dynamic weighing cumulative batching quantity T n Calculate the weight deviation C of static and dynamic weighing ingredients n , and the accuracy deviation D between static weighing and dynamic weighing n , where C n =M–T n -B n , D n =(T n +B n -M)÷M; S6-3-4: According to the weight deviation C of static and dynamic weighing ingredients n And the accuracy deviation D between static weighing and dynamic weighing n Dynamic correction factor K m Adjustment is made, where the dynamic correction coefficient K m Used to adjust the accuracy deviation of dynamic weighing ingredients. The value range of m is a natural number greater than or equal to 0.

9. A powder continuous batching device according to claim 8, characterized in that: Dynamic correction factor K m Adjustments include: When |C n |>C or |D n |>D, the dynamic correction factor K m Adjust to K m =K m-1 ×M÷(T n +B n ), where C is the dynamic weighing batching weight deviation limit, D is the dynamic weighing batching accuracy deviation limit, m represents the number of times the correction coefficient is adjusted, and K0 is the initialization dynamic scale correction coefficient, which is obtained by the dynamic scale initialization calibration process before the system is run.

10. A powder continuous batching device according to claim 9, characterized in that: Dynamic correction factor K m When making adjustments, the measurement deviation δ is calculated at the same time n =(T n +B n -M)÷M×100%, record and feedback δ n , set the allowable measurement deviation δ, when |δ n |>δ, metering failure alarm occurs.

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