Powder apparent density measuring device

Abstract

The utility model discloses a powder apparent density measuring device. The powder apparent density measuring device comprises a base, a connecting rod, a connecting bracket, a powder receiving mechanism, a powder cleaning mechanism and a blanking funnel, the connecting support is rotationally arranged on a center shaft of the base and fixedly connected with the connecting rod, the discharging hopper and the powder sweeping mechanism are arranged at the two ends of the connecting rod respectively, the powder receiving mechanism is arranged on the base and located below the discharging hopper, and the powder sweeping mechanism can remove powder adhering to the outer side of the powder receiving mechanism. According to the powder apparent density measuring device, through the arrangement of the powder cleaning mechanism, solid powder attached to the outer side of the powder receiving mechanism can be cleaned, and the situation that the solid powder is attached to the outer side wall of the powder receiving mechanism in the measuring process is avoided; and the measurement accuracy of the measurement device is further ensured, so that the device can accurately measure the apparent density of the solid powder.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy technology, and more specifically, to a powder loose density measuring device. Background Technology

[0002] Loose packing density is an important process performance parameter of powder, referring to the bulk density measured when powder freely fills a standard container under specified conditions. It is the mass per unit volume when the powder is loosely packed, expressed in g / cm³. It comprehensively reflects various properties of the powder and is crucial for the design of powder metallurgy and mechanical parts manufacturing processes, as well as product quality control. It also serves as the basis for mold design. Measurement methods generally include three types depending on the powder properties: the funnel method, the Scott volumetric meter method, and the vibrating funnel method. Among these, the funnel method is the most widely used, and in the field of powder metallurgy, the funnel-type loose packing density measuring device is frequently employed for loose packing density measurement.

[0003] Most common measuring devices are based on the GB / T 1479.1-2011 standard. During measurement, powder falls into a cylindrical cup through a small hole at the bottom of a funnel until the cup is completely filled and powder overflows. Afterward, a non-magnetic ruler is used to level the powder. However, this "non-magnetic ruler" is not considered a fixed accessory of the measuring device and lacks a unified standard. In actual production and testing, variations in length and material can easily affect the final measurement value. Furthermore, after measurement, trace amounts of powder often adhere to the walls of the cylindrical cup. If not cleaned promptly, this directly leads to a higher weighed powder than the actual weight, resulting in an inflated loose density value.

[0004] Therefore, there is an urgent need for a powder measuring device that can clean the outer wall of a cylindrical cup to avoid the adhesion of trace amounts of powder to the cylindrical cup wall, which would affect the accuracy of the measurement. Utility Model Content

[0005] This utility model provides a powder loose density measuring device, which is used to measure the loose density of solid powder. The powder loose density measuring device includes: a base, a connecting rod, a connecting bracket, a powder receiving mechanism, a powder cleaning mechanism, and a feeding funnel.

[0006] The connecting bracket is rotatably mounted on the central axis of the base. The connecting bracket is fixedly connected to the connecting rod. The feeding funnel and the powder cleaning mechanism are respectively located at both ends of the connecting rod. The powder receiving mechanism is located on the base and below the feeding funnel. The powder cleaning mechanism can remove the powder adhering to the outside of the powder receiving mechanism.

[0007] Preferably, the powder cleaning mechanism includes a rotating shaft, a scraper, a pair of brushes, and a rotating drive component;

[0008] The rotary drive is mounted on the connecting rod. One end of the rotary shaft passes through the connecting rod and is connected to the rotary drive. The other end of the rotary shaft is connected to the scraper. A pair of brushes are connected to the bottom of the scraper. The pair of brushes are located at both ends of the bottom of the scraper, and both brushes can clean the powder adhering to the outside of the powder receiving mechanism.

[0009] Preferably, the height of the scraper from the base is equal to the height of the top of the powder receiving mechanism from the base, the height of the brush is equal to the height of the powder receiving mechanism, and the scraper is parallel to the base.

[0010] Preferably, the powder receiving mechanism includes a cylindrical cup and a receiving tray;

[0011] The receiving tray is disposed on the base, the cylindrical cup is placed in the receiving tray and the central axis of the cylindrical cup can coincide with the central axis of the feeding funnel or scraper, and the height of the cylindrical cup is equal to the height of the brush so that the outer wall of the cylindrical cup can be cleaned by the brush.

[0012] Preferably, the diameter of the discharge opening of the discharge funnel is smaller than the diameter of the cylindrical cup, and the diameter of the cylindrical cup is smaller than the length of the scraper.

[0013] Preferably, the connecting bracket includes a bracket and a limiting block;

[0014] The bracket is rotatably mounted on the base, and a limiting groove is provided on the bracket. The limiting block can be locked and fixed in the limiting groove to restrict the rotation of the bracket.

[0015] Preferably, the base is provided with a level measuring element to ensure that the base is level.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model discloses a powder loose density measuring device. By setting up a powder cleaning mechanism, it can clean the solid powder adhering to the outside of the powder receiving mechanism, avoiding the presence of solid powder adhering to the outer wall of the powder receiving mechanism during the measurement process. This prevents the weighed powder weight from being higher than the actual weight, further ensuring that the powder weight weighed by the powder receiving mechanism is equal to the actual powder weight, improving the measurement accuracy of the measuring device, and ensuring that the device can accurately measure the powder loose density value. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the powder loose density measuring device of this utility model;

[0019] Figure 2This is a top view schematic diagram of the powder loose density measuring device of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Bracket; 2. Limiting block; 3. Fastening bolt; 4. Connecting rod; 5. Rotating shaft; 6. Scraper; 7. Brush; 8. Base; 9. Discharge funnel; 10. Cylindrical cup; 11. Receiving tray; 12. Horizontal measuring component; 13. Rotary drive component. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Many specific details are set forth in the following description to enable those skilled in the art to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] like Figure 1 As shown, a powder loose density measuring device is used to measure the loose density of solid powder. The device comprises: a base 8, a connecting rod 4, a connecting bracket, a powder receiving mechanism, a powder cleaning mechanism, and a feeding funnel 9. The connecting bracket is rotatably mounted on the central axis of the base 8 and fixedly connected to the connecting rod 4. The feeding funnel 9 and the powder cleaning mechanism are respectively located at both ends of the connecting rod 4. The powder receiving mechanism is mounted on the base 8 and located below the feeding funnel 9. The powder cleaning mechanism can remove powder adhering to the outside of the powder receiving mechanism.

[0026] In this embodiment, the powder loose density measuring device, through the setting of a powder cleaning mechanism, can clean the solid powder adhering to the outside of the powder receiving mechanism, avoiding the presence of solid powder adhering to the outer wall of the powder receiving mechanism during the measurement process. This prevents the weighed powder weight from being higher than the actual weight, further ensuring that the weighed powder weight of the powder receiving mechanism is equal to the actual powder weight, improving the measurement accuracy of the measuring device, and ensuring that the device can accurately measure the powder loose density value. The rotating connecting bracket and the powder cleaning mechanism and feeding funnel 9 respectively located at both ends of the connecting bracket further enable the measuring device to clean the solid powder adhering to the outside of the powder receiving mechanism without changing the position of the powder receiving mechanism after receiving powder using the funnel method. The structure is simple, the steps are clear, and it is easy for operators to use.

[0027] See Figure 1 The powder cleaning mechanism includes a rotating shaft 5, a scraper 6, a pair of brushes 7, and a rotating drive component 13. The rotating drive component 13 is mounted on a connecting rod 4, which is fixed to a bracket by fastening bolts 3. One end of the rotating shaft 5 passes through the connecting rod 4 and is connected to the rotating drive component 13, while the other end is connected to the scraper 6. A pair of brushes 7 are connected to the bottom of the scraper 6, located at opposite ends of the bottom of the scraper 6, and both brushes 7 can clean the powder adhering to the outside of the powder receiving mechanism. The height of the scraper 6 from the base 8 is equal to the height of the top of the powder receiving mechanism from the base 8, and the height of the brushes 7 is equal to the height of the powder receiving mechanism. The scraper 6 is parallel to the base 8. The powder receiving mechanism includes a cylindrical cup 10 and a receiving tray 11. The receiving tray 11 is set on the base 8, the cylindrical cup 10 is placed in the receiving tray 11 and the central axis of the cylindrical cup 10 can coincide with the central axis of the feeding funnel 9 or the scraper 6. The height of the cylindrical cup 10 is equal to the height of the brush 7 so that the outer wall of the cylindrical cup 10 can be cleaned by the brush 7.

[0028] In a preferred embodiment, the scraper 6 is made of austenitic stainless steel, the rotary drive 13 is preferably a rotary motor, the thickness of the scraper 6 is 1.0 cm, the length of the scraper 6 is 1 cm longer than the outer diameter of the cylindrical cup 10, the central axis of the scraper 6 coincides with the rotating shaft 5, and the scraper 6 extends 0.5 cm on each side of its central axis relative to the cylindrical cup 10 for mounting the brush 7, and the length of the brush 7 is the same as the height of the cylindrical cup 10, and the bristles of the brush 7 are greater than 0.5 cm to ensure that the bristles of the brush 7 abut against the cup wall of the cylindrical cup 10.

[0029] In this embodiment, when the powder cleaning mechanism rotates to the powder receiving mechanism, the rotating drive 13 drives the rotating shaft 5 to rotate, thereby causing the scraper 6 and brush 7 at the end of the rotating shaft 5 to rotate. This allows the scraper 6 to contact the mouth of the cylindrical cup 10, and the rotating scraper 6 flattens the solid powder located at the mouth of the cylindrical cup 10. The rotation of the brush 7 physically cleans the outer wall of the cylindrical cup 10, effectively removing the solid powder adhering to the outer wall of the cylindrical cup 10, preventing the solid powder adhering to the outer wall of the cylindrical cup 10 from affecting the measurement results, and improving the measurement accuracy of the device. The setting of its receiving tray 11 further effectively avoids the problem of inconvenient collection of overflowing solid powder, prevents solid powder from splashing during the measurement process, and improves environmental protection.

[0030] In a preferred embodiment, the diameter of the discharge opening of the feeding funnel 9 is smaller than the diameter of the cylindrical cup 10, and the diameter of the cylindrical cup 10 is smaller than the length of the scraper 6. This arrangement ensures that all solid powder can pass through the feeding funnel 9 and fall into the cylindrical cup 10.

[0031] In a preferred embodiment, the connecting bracket includes a bracket 1 and a limiting block 2; the bracket 1 is rotatably mounted on the base 8, and a limiting groove is provided on the bracket 1, and the limiting block 2 can be snapped and fixed on the limiting groove to limit the rotation of the bracket 1.

[0032] In this embodiment, a limiting groove is provided on the support 1. After the support 1 rotates to the required powder cleaning mechanism or feeding funnel 9, a limiting block 2 is locked on the limiting groove to restrict the rotation of the support 1, so that it can run firmly and stably during the measurement process, avoid the movement caused by the support 1 not being fixed, and further improve the safety of the measuring device.

[0033] like Figure 2 As shown, a level measuring element 12 is provided on the base 8 to ensure that the base 8 is level. The level measuring element 12 is preferably a spirit level, but it can also be a plastic level, a glass level, an electronic level, etc.

[0034] Based on the above-mentioned powder loose density measuring device, this utility model also provides a method of using the powder loose density measuring device, which is as follows: When using the powder loose density measuring device for measurement, the feeding funnel 9 is rotated to the top of the cylindrical cup 10. At this time, the limiting block 2 is engaged with the limiting groove on the bracket 1 to fix the bracket 1, and the solid powder is fed into the cylindrical cup 10 through the feeding funnel 9; when the solid powder in the cylindrical cup 10 begins to overflow into the receiving tray 11, the feeding end of the feeding funnel 9 is closed, the limiting block 2 is released, and the powder cleaning mechanism at the other end of the bracket 1 is rotated. Move the rotating shaft 5 to the top of the cylindrical cup 10. When the rotating shaft 5 coincides with the central axis of the cylindrical cup 10, the brush 7 abuts against the outer wall of the cylindrical cup 10, the scraper 6 just contacts the mouth of the cylindrical cup 10, the limiting block 2 engages with the limiting groove on the bracket 1 to fix the bracket 1, and the rotating motor is turned on, so that the scraper 6 flattens the solid powder at the mouth of the cylindrical cup 10, and the brush 7 cleans the outer wall of the cylindrical cup 10 to clean the outer wall of the cylindrical cup 10. After cleaning, take out the cylindrical cup 10 and weigh it to obtain the weight of the solid powder in the cylindrical cup 10, and then obtain the loose density of the solid powder.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A powder loose packing density measuring device, wherein the powder loose packing density measuring device is used to measure the loose packing density of solid powder, characterized in that, The powder loose density measuring device includes: a base, a connecting rod, a connecting bracket, a powder receiving mechanism, a powder cleaning mechanism, and a feeding funnel; The connecting bracket is rotatably mounted on the central axis of the base. The connecting bracket is fixedly connected to the connecting rod. The feeding funnel and the powder cleaning mechanism are respectively located at both ends of the connecting rod. The powder receiving mechanism is located on the base and below the feeding funnel. The powder cleaning mechanism can remove the powder adhering to the outside of the powder receiving mechanism.

2. The powder loose density measuring device according to claim 1, characterized in that, The powder cleaning mechanism includes a rotating shaft, a scraper, a pair of brushes, and a rotating drive component. The rotary drive is mounted on the connecting rod. One end of the rotary shaft passes through the connecting rod and is connected to the rotary drive. The other end of the rotary shaft is connected to the scraper. A pair of brushes are connected to the bottom of the scraper. The pair of brushes are located at both ends of the bottom of the scraper, and both brushes can clean the powder adhering to the outside of the powder receiving mechanism.

3. The powder loose density measuring device according to claim 2, characterized in that, The height of the scraper from the base is equal to the height of the top of the powder receiving mechanism from the base, the height of the brush is equal to the height of the powder receiving mechanism, and the scraper is parallel to the base.

4. The powder loose density measuring device according to claim 3, characterized in that, The powder receiving mechanism includes a cylindrical cup and a receiving tray; The receiving tray is disposed on the base, the cylindrical cup is placed in the receiving tray and the central axis of the cylindrical cup can coincide with the central axis of the feeding funnel or scraper, and the height of the cylindrical cup is equal to the height of the brush so that the outer wall of the cylindrical cup can be cleaned by the brush.

5. The powder loose density measuring device according to claim 4, characterized in that, The diameter of the discharge opening of the feeding funnel is smaller than the diameter of the cylindrical cup, and the diameter of the cylindrical cup is smaller than the length of the scraper.

6. The powder loose density measuring device according to claim 1, characterized in that, The connecting bracket includes a bracket and a limiting block; The bracket is rotatably mounted on the base, and a limiting groove is provided on the bracket. The limiting block can be locked and fixed in the limiting groove to restrict the rotation of the bracket.

7. The powder loose density measuring device according to claim 1, characterized in that, The base is equipped with a level measuring element to ensure that the base is level.

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