Apparent density measuring instrument

Abstract

The utility model relates to the field of powder density measurement, in particular to an apparent density measuring instrument. The utility model relates to an apparent density measuring instrument, which comprises a base and a measuring rod, wherein the base upwards forms a weighing plane for placing a volume measuring vessel; the main supporting rod extends upwards from one side of the base; the funnel support extends from one end, far away from the base, of the main supporting rod to the position above the volume measuring vessel in the horizontal direction; the funnel is supported on the funnel bracket, and a discharge hole in the lower end of the funnel is opposite to an upward opening of the volume measuring vessel; the weighing module comprises a weighing sensor which is arranged below the volume measuring vessel of the weighing plane; and the weighing processing module is in signal connection with the weighing sensor and is used for processing the weight data obtained by the weighing sensor. According to the utility model, the weighing sensor is arranged below the weighing plane of the base, so that the weight information of the powder is obtained while the loose volume measurement is realized, thereby reducing the working steps and saving the experiment time.

Description

Technical Field

[0001] This utility model relates to the field of powder density measurement, and in particular to a loosely packed density measuring instrument. Background Art

[0002] Powder density is divided into loose density and tapped density depending on the packing method. Loose density refers to the bulk density measured after the powder is freely filled into a standard container under specified conditions, that is, the mass per unit volume when the powder is loosely packed.

[0003] The existing loose packing density meter is generally the MZ-103 type natural packing loose packing density meter, which conforms to the national standard GB / T16913.3-2008. Its working process is to use a plug made of stainless steel (to prevent the powder from falling after being loaded into the funnel) to block the funnel opening. Then, a certain mass of powder is loaded into the funnel, and the plug is pulled out to allow the powder to fall freely from the funnel opening at a certain height to fill the entire measuring cylinder. Then, the powder accumulated on the top of the measuring cylinder is scraped off with a scraper. The mass of the powder per unit volume in the measuring cylinder under loose packing conditions is then measured, which is the loose packing density of the powder.

[0004] However, in the process of realizing this utility model, the applicant found that after measuring the loose powder, it is also necessary to measure the mass of the powder on a balance, which is a rather cumbersome operation. Utility Model Content

[0005] I. Technical problems to be solved

[0006] This invention aims to solve at least partially one of the aforementioned technical problems.

[0007] II. Technical Solution

[0008] This utility model provides a loose density measuring instrument. The loose density measuring instrument includes: a base forming a weighing plane for placing a volumetric measuring instrument; a main support rod extending upwards from one side of the base; a funnel support extending horizontally from the end of the main support rod away from the base to above the volumetric measuring instrument; a funnel supported on the funnel support, with its lower outlet opposite to the upward opening of the volumetric measuring instrument; and a weighing module including: a weighing sensor positioned below the volumetric measuring instrument on the weighing plane; and a weighing processing module connected to the weighing sensor for processing the weight data obtained by the weighing sensor.

[0009] In some embodiments of this utility model, the weighing module further includes a weight display module, which is connected to the weighing processing module and displays the weight obtained by the weighing processing module.

[0010] In some embodiments of this utility model, the funnel includes: a funnel body; and a PTFE layer attached to the inner side of the funnel body.

[0011] In some embodiments of this utility model, the funnel body is made of plastic or stainless steel.

[0012] In some embodiments of this utility model, the main support rod is an electrically controlled lifting rod.

[0013] In some embodiments of this utility model, the electrically controlled lifting rod includes: a main rod, fixed on the base and extending upward; a lifting rod, sleeved inside the main rod; a funnel bracket fixed on the lifting rod; and a lifting motor, fixed on one side of the main rod on the base and connected to the lifting rod inside the main rod; wherein the lifting motor drives the lifting rod to move up and down longitudinally.

[0014] In some embodiments of this utility model, the electrically controlled lifting pole further includes: an electrically controlled lifting control module, whose signal is connected to the lifting motor; and an electrically controlled lifting display module, whose signal is connected to the electrically controlled lifting control module.

[0015] In some embodiments of this utility model, it further includes: a vibration feeding module, comprising: a vibration motor bracket, with one end of the self-supporting rod away from the base extending horizontally to the top of the volume measuring device, and its end forming a ring around the funnel; N vibration motors, uniformly fixed to the ring end of the vibration motor bracket, with their vibrating bodies abutting against the funnel, where N≥2.

[0016] In some embodiments of this utility model, in the vibratory feeding module, the vibratory motor bracket is disposed below the funnel bracket; and / or, N=3; and / or, it further includes: a vibratory motor control module, which is signal-connected to N vibratory motors and sets the vibration frequency of the vibratory motors.

[0017] In some embodiments of this utility model, the volume measuring instrument is: a measuring cup or a measuring cylinder; and / or, the end of the funnel support is annular, and the funnel is mounted on the annular end of the funnel support.

[0018] III. Beneficial Effects

[0019] As can be seen from the above technical solution, the present invention has at least one of the following beneficial effects compared with the prior art:

[0020] 1. In the existing technology, the loose volume and weight parameters are measured separately. That is, after the loose volume is determined, the volume measuring instrument is used together with the powder to measure the weight on a precision balance, which is a rather cumbersome operation.

[0021] In this invention, a weighing sensor is installed below the weighing plane of the base to obtain the weight information of the powder while measuring the loose volume, thereby reducing working steps and saving experimental time.

[0022] 2. In this utility model, the weighing module has an automatic leveling function, which can ensure that the volume measuring instrument A is in a stable state for measurement, thereby ensuring the accuracy of weighing.

[0023] 3. In this utility model, the weighing module can weigh the volumetric measuring instrument in advance, and after obtaining the volumetric level and the total weight of the powder, calculate the net weight of the powder, which reduces the workload of the experiment and saves the experimental time.

[0024] 4. In this utility model, the weighing module can preset the volume of the powder. After the powder is loosely packed, the loose density of the powder can be directly calculated from the net weight of the powder and the preset powder volume, which further reduces the workload of the experiment.

[0025] 5. In this utility model, the funnel includes: a funnel body; and a polytetrafluoroethylene (PTFE) layer attached to the inner side of the funnel body. The PTFE layer has higher non-stick properties and insulation performance. Placing the PTFE layer on the inner side of the funnel body can reduce friction generated by the powder, shorten the time the powder leaks down, resulting in more accurate measurement data and extending the service life of the funnel.

[0026] 6. In this invention, under the control of the vibration motor control module, the vibration motor accelerates the material leakage time and improves efficiency by adjusting the vibration frequency, thus avoiding damage to the funnel caused by the use of metal wire. Furthermore, compared to installing vibrating plates inside the funnel, this invention ensures the integrity of the funnel itself, has lower costs, is easier to install and maintain, and offers superior operability.

[0027] 7. In existing technology, the main support rod is fixed, and the funnel holder is fixed to the main support rod by a slider, thereby enabling manual adjustment of the funnel height. This setup not only fails to guarantee accuracy but also increases the workload of experiments.

[0028] In this invention, the main support rod is set as an electrically controlled lifting rod, which enables precise adjustment of the funnel height.

[0029] 8. In this invention, the experimenter can set the height via a program, and the program will execute the lifting process to move the funnel to the designated position, thereby avoiding measurement errors caused by human factors and reducing manual operation. Furthermore, the main lifting rod is equipped with a limit switch to prevent the lifting rod from exceeding the preset range. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the loose-pack density measuring instrument according to an embodiment of the present invention.

[0031] Figure 2 for Figure 1The enlarged horizontal cross-sectional view of the contact area between the vibrating motor and the funnel in the loose density measuring instrument shown. Detailed Implementation

[0032] The utility model concept is to simplify the operation steps of measuring the loose density of powder, and improve the standardization of the measurement process and the accuracy of the measurement results.

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and with reference to the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of the loose-pack density measuring instrument according to an embodiment of the present invention. Figure 2 for Figure 1 The image shows an enlarged horizontal cross-sectional view of the contact area between the vibrating motor and the funnel in the loose bulk density measuring instrument. Figure 1 and Figure 2 As shown, the loose packing density measuring instrument in this embodiment includes:

[0035] The base 10 forms an upward-facing weighing plane for placing the volumetric measuring instrument 11;

[0036] The main support rod 20 extends upward from one side of the base;

[0037] The funnel support 30 has a self-supporting rod that extends horizontally to the top of the volumetric measuring instrument at the end furthest from the base.

[0038] Funnel 40 is supported on a funnel bracket, with its lower outlet facing the upward opening of the volumetric measuring instrument.

[0039] Weighing module, used for weighing volumetric instruments and powders inside symmetrical measuring planes;

[0040] The vibrating feeding module is used to provide vibration to the hopper, promoting the rapid passage of powder through the hopper.

[0041] The following is a detailed description of each component of the loose density measuring instrument in this embodiment.

[0042] In existing technologies, the loose volume and weight are measured separately. That is, after determining the loose volume, the volumetric gauging device is used to measure the weight of the powder along with the powder on a precision balance, which is a cumbersome process. In this embodiment, a weighing sensor is installed below the weighing plane of the base, allowing the powder weight information to be obtained simultaneously with the loose volume measurement, thereby reducing the number of steps and saving experimental time.

[0043] Specifically, please refer to Figure 1The weighing module includes: a high-precision weighing sensor 51, which is located below the volumetric measuring device on the weighing plane; a weighing processing module, which is connected to the weighing sensor; and a weight display module 52, which is connected to the weighing processing module and displays the weight information obtained by the weighing processing module.

[0044] In this embodiment, the weighing module has an automatic leveling function, which can ensure that the volumetric measuring instrument A is in a stable state for measurement, thereby ensuring the accuracy of weighing.

[0045] It should also be noted that the weighing processing module has data processing capabilities, enabling it to monitor the total mass of the container and its contents in real time using the weighing sensor 51, and display the result on the weight display module 52. Furthermore, the weighing processing module can also:

[0046] ① Peeling function

[0047] The weighing module can weigh the volumetric volumetric material in advance, and after obtaining the volumetric volumetric volume and the total weight of the powder, calculate the net weight of the powder, which greatly reduces the workload of experiments and saves experimental time.

[0048] ②Density calculation function

[0049] The weighing module can preset the volume of the powder. After the powder is loosely packed, the loose density of the powder can be directly calculated from the net weight of the powder and the preset powder volume, which further reduces the workload of the experiment.

[0050] For other technical details regarding the base of the loose-pack density measuring instrument in this embodiment, please refer to the relevant descriptions in the prior art, which will not be repeated here.

[0051] In existing technologies, in the loose density measuring instrument of the funnel method, it is permissible to poke the funnel from above with a metal object when the solid does not pass through. However, prolonged use of this method can enlarge the discharge hole and reduce the smoothness of the funnel surface due to friction, resulting in measured values ​​that do not reflect the true situation. In this embodiment, a PTFE layer is provided on the inner side of the funnel body, and a vibration motor is provided on the outer side of the funnel, thereby reducing friction between the powder and the inner side of the funnel and improving the throughput efficiency.

[0052] In this embodiment, the funnel 40 includes: a funnel body; and a polytetrafluoroethylene (PTFE) layer attached to the inner side of the funnel body. The PTFE layer has higher non-stick and insulating properties. Placing the PTFE layer inside the funnel body reduces friction from the powder, shortens the time the powder leaks down, resulting in more accurate measurements and extended funnel lifespan.

[0053] In this embodiment, the funnel body is made of stainless steel, but this invention is not limited to this. In other embodiments of this invention, the funnel body can also be made of other materials, such as plastic, and all of these methods can achieve the present invention and are within the protection scope of this invention.

[0054] Please refer to Figure 1 and Figure 2 In this embodiment, the vibration feeding module includes: a vibration motor bracket 61, which is located below the funnel bracket, with one end of the self-supporting rod away from the base extending horizontally to the top of the volume measuring device, and its end forming a ring around the funnel; three vibration motors 62, which are evenly fixed to the ring end of the vibration motor bracket, and their vibrating bodies abut against the funnel; and a vibration motor control module (not shown in the figure), which is connected to the three vibration motors and sets the vibration frequency of the vibration motors.

[0055] In this embodiment, under the control of the vibration motor control module, the vibration motor accelerates the material leakage time and improves efficiency by adjusting the vibration frequency, thus avoiding damage to the funnel caused by the use of metal wire. Furthermore, compared to installing vibrating plates inside the funnel, the technical solution in this embodiment ensures the integrity of the funnel itself, has lower costs, is easier to install and maintain, and offers superior operability.

[0056] In this embodiment, the vibratory feeding module includes three vibratory motors, but this invention is not limited thereto. In other embodiments of this invention, the number of vibratory motors can be set according to the size of the funnel and the power of the vibratory motors, and all of these methods can achieve the present invention and are within the protection scope of this invention.

[0057] For other technical details regarding the funnel in the loose-pack density measuring instrument of this embodiment, please refer to the relevant descriptions in the prior art, which will not be repeated here.

[0058] In existing technologies, the main support rod is fixed, and the funnel support is fixed to the main support rod by a slider, thereby enabling manual adjustment of the funnel height. This method suffers from inconsistent accuracy and increases the workload of experiments. In this embodiment, the main support rod is configured as an electrically controlled lifting rod, achieving precise adjustment of the funnel height.

[0059] Specifically, please refer to Figure 1 The main support rod 20 includes: a main rod 21, fixed to the base and extending upward; a lifting rod 22, sleeved inside the main rod; a funnel bracket fixed to the lifting rod; a lifting motor 23, fixed to one side of the main rod on the base and connected to the lifting rod inside the main rod; an electric lifting control module 24, with a signal connected to the lifting motor; and an electric lifting display module (not shown in the figure), with a signal connected to the electric lifting control module.

[0060] The electrically controlled lifting module includes buttons for raising, lowering, and setting the preset funnel height. Researchers can use this module to control the lifting motor, which drives the lifting rod to move vertically up and down. Furthermore, the electrically controlled lifting display module shows information such as the current funnel height and the preset funnel height.

[0061] In this embodiment, the experimenter can set the height through a program, and the program will execute the lifting process to move the funnel to the designated position, thereby avoiding measurement errors caused by human factors and reducing manual operation. Furthermore, the main lifting rod is equipped with a limit switch to prevent the lifting rod from exceeding the preset range.

[0062] In this embodiment, the weighing processing module, the vibration motor control module, and the electric lifting module are set up separately, as are the weight display module and the electric lifting display module. However, this utility model is not limited to this. In other embodiments of this utility model, they can be uniformly set up. For example, the vibration motor control module can be integrated into the vibration motor; or, a unified processing module and display module can be set up in the loose density measuring instrument to achieve the corresponding functions. This can also realize this utility model and is within the protection scope of this utility model.

[0063] This concludes the description of all embodiments of this utility model. Based on the above description, those skilled in the art should have a clear understanding of this utility model.

[0064] It should be noted that the directional terms mentioned in the embodiments, such as "center," "lateral," "longitudinal," "top," "bottom," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," indicate the orientation or positional relationship based solely on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, throughout the accompanying drawings, the same elements are represented by the same or similar reference numerals. Also, the shapes and dimensions of the components in the drawings do not reflect actual size and proportion, but are only schematic representations of the embodiments of the present invention.

[0065] Those skilled in the art will understand that in the claims and description of this utility model, the word "comprising" does not exclude the presence of elements not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements (or steps).

[0066] For certain implementations, if they are not key aspects of this utility model and are well-known to those skilled in the art, they have not been described in detail in the accompanying drawings or text due to space limitations. In such cases, reference can be made to relevant prior art for understanding. Furthermore, the purpose of providing the above embodiments is merely to ensure that this utility model meets legal requirements, and this utility model can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

[0067] Similarly, it should be understood that, for the sake of brevity, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this approach should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, each aspect of the invention comprises fewer than all the features of the preceding single embodiment. Furthermore, embodiments may be used in combination with each other or with other embodiments based on design and reliability considerations; that is, technical features from different embodiments can be freely combined to form more embodiments. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the present invention.

[0068] The above specific embodiments have provided a detailed description of the purpose, technical means, and beneficial effects of this utility model. It should be understood that the purpose of the detailed description is to enable those skilled in the art to understand this utility model more clearly, and it is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A loose density measuring instrument, characterized in that, include: The base forms an upward-facing weighing plane for placing the volumetric measuring instrument. The main support rod extends upward from one side of the base; The funnel support extends horizontally from the end of the main support rod away from the base to the top of the volumetric measuring device; The funnel is supported on a funnel holder, with its lower outlet facing the upward opening of the volumetric measuring instrument. Weighing module, including: A weighing sensor is disposed below the volume measuring device on the weighing plane; The weighing processing module is connected to the weighing sensor and processes the weight data obtained by the weighing sensor.

2. The loose density measuring instrument according to claim 1, characterized in that, The weighing module further includes a weight display module, which is connected to the weighing processing module and displays the weight obtained by the weighing processing module.

3. The loose density measuring instrument according to claim 1, characterized in that, The funnel includes: Funnel body; The PTFE layer is attached to the inner side of the funnel body.

4. The loose density measuring instrument according to claim 3, characterized in that, The funnel body is made of plastic or stainless steel.

5. The loose density measuring instrument according to claim 1, characterized in that, The main support rod is an electrically controlled lifting rod.

6. The loose density measuring instrument according to claim 5, characterized in that, The electrically controlled lifting mast includes: The main rod is fixed to the base and extends upward. A lifting rod is fitted inside the main rod; the funnel bracket is fixed to the lifting rod; A lifting motor is fixed to one side of the main rod on the base and connected to the lifting rod inside the main rod; The lifting motor drives the lifting rod to move up and down longitudinally.

7. The loose density measuring instrument according to claim 6, characterized in that, The electrically controlled lifting mast also includes: An electric lifting control module is connected to the lifting motor via a signal connection. The electric lifting display module is connected to the electric lifting control module via a signal connection.

8. The loose density measuring instrument according to claim 1, characterized in that, Also includes: Vibration feeding module, including: The vibration motor bracket extends horizontally from the end of the main support rod away from the base to the top of the volumetric measuring device, and its end is a ring-shaped arrangement around the funnel. N vibration motors are evenly fixed to the annular end of the vibration motor bracket, and their vibrating bodies abut against the funnel, where N≥2.

9. The loose density measuring instrument according to claim 8, characterized in that, In the vibratory feeding module The vibration motor bracket is located below the funnel bracket; And / or, N = 3; And / or, it also includes: a vibration motor control module, which is signal-connected to the N vibration motors and sets the vibration frequency of the vibration motors.

10. The loose packing density measuring instrument according to any one of claims 1 to 9, characterized in that, The volume measuring instrument is: a measuring cup or a measuring cylinder; And / or, the end of the funnel support is annular, and the funnel is mounted on the annular end of the funnel support.

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