CN211652429U - Powder bulk density measuring device under high temperature - Google Patents
Powder bulk density measuring device under high temperature Download PDFInfo
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- CN211652429U CN211652429U CN201921899051.7U CN201921899051U CN211652429U CN 211652429 U CN211652429 U CN 211652429U CN 201921899051 U CN201921899051 U CN 201921899051U CN 211652429 U CN211652429 U CN 211652429U
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Abstract
The utility model provides a powder bulk density measuring device under high temperature, which comprises a base, a driving device, a heating device, a heat preservation device and a measuring device; the driving device comprises a cylinder and an oscillator; the heating device comprises a heating furnace for heating a sample to be detected, a heating funnel for storing the sample to be detected, a stirrer for pretreating the sample to be detected, a first blanking baffle and a temperature sensor for detecting the temperature of the sample to be detected; the heating funnel, the first blanking baffle, the temperature sensor and the stirrer are arranged in the heating furnace; the first blanking baffle is arranged below the heating funnel opening, and the stirrer is arranged in the middle of the heating furnace; by applying the technical scheme, the requirements for measuring the loose density and the tap density of the powder at high temperature can be met, and the measurement efficiency of the device is improved.
Description
Technical Field
The utility model relates to a field specifically indicates a powder bulk density measuring device under high temperature.
Background
The bulk density of the powder is a basic property of the powder aggregate, and is of great significance in the powder filling process. It relates to many disciplinary fields such as aerospace, chemical engineering, civil engineering, nuclear industry, pharmaceutical industry, food industry, composite materials, ceramic materials and the like. The 3D printing technology is known as the third industrial technology revolution, and one of the core problems restricting the development is material. At present, powder is used as one of main materials for 3D printing, but characterization of physical parameters of the powder at high temperature does not form a set of truly effective methods. How to characterize the physical parameters of the powder at high temperature is a problem to be solved urgently at present.
The characterization parameters of the existing powder bulk physical property are mainly expressed by bulk specific volume, bulk density, void ratio, filling rate and coordination number. There are three corresponding methods for measuring powder apparent density and tap density: funnel method, scott volumetric method, vibrating funnel method. The existing natural stacking loose density meter has certain defects in measuring loose density: the apparent density of the powder at high temperature cannot be measured; the loose density and the tap density cannot be measured simultaneously; the interference of external factors cannot be controlled.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a powder bulk density measuring device under high temperature has satisfied powder apparent density and tap density measurement demand under the high temperature, has improved the measurement of efficiency of device.
In order to solve the technical problem, the utility model provides a powder bulk density measuring device under high temperature: comprises a base, a driving device, a heating device, a heat preservation device and a measuring device;
the driving device comprises a cylinder and an oscillator; the heating device comprises a heating furnace for heating a sample to be detected, a heating funnel for storing the sample to be detected, a stirrer for pretreating the sample to be detected, a first blanking baffle and a temperature sensor for detecting the temperature of the sample to be detected; the heating funnel, the first blanking baffle, the temperature sensor and the stirrer are arranged in the heating furnace; the first blanking baffle is arranged below the heating funnel opening, and the stirrer is arranged in the middle of the heating furnace;
the heat preservation device comprises a first heat preservation furnace, a heat preservation funnel, a temperature sensor and a second blanking baffle, wherein the heat preservation funnel, the temperature sensor and the second blanking baffle are arranged in the first heat preservation furnace, and the second blanking baffle is arranged below the mouth of the heat preservation funnel;
the measuring device comprises a second heat-preserving furnace, a powder scraping plate for removing redundant samples to be measured, a measuring cylinder with standard capacity, a measuring supporting plate, an oscillator and a weighing sensor, the measuring cylinder and the measuring supporting plate are arranged in the second heat-preserving furnace, the powder scraping plate is arranged above the contact surface of the measuring cylinder, the measuring supporting plate is arranged below the contact surface of the measuring cylinder, and the weighing sensor is connected with the measuring supporting plate.
In a preferred embodiment: the device also comprises a cylinder support, a furnace support and an oscillator support.
In a preferred embodiment: the volume of the heat preservation funnel is larger than that of the heating funnel, and the volume of the heat preservation funnel is larger than that of the measuring cylinder.
In a preferred embodiment: the temperature adjusting ranges of the heating furnace, the first heat preserving furnace and the second heat preserving furnace are 20-800 ℃.
In a preferred embodiment: the sensitivity of the weighing sensor is 1 mV/V.
In a preferred embodiment: and heat insulation layers are arranged outside the heating furnace, the first heat preservation furnace and the second heat preservation furnace.
In a preferred embodiment: the heating furnace, the first heat preservation furnace and the second heat preservation furnace are fixed on the furnace support, and the heating furnace support is fixed on the base.
In a preferred embodiment: and an air cylinder is fixed on the air cylinder support, and the bottom of the air cylinder support is fixed on the base.
In a preferred embodiment: the oscillator is fixed on the oscillator support, and the bottom of the oscillator support is fixed on the base.
In a preferred embodiment: the cylinder and the oscillator are connected with a servo motor to control movement.
Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:
the utility model provides a powder bulk density measuring device under high temperature, simple structure, convenient to use measure accurately, utilize the funnel method to measure powder apparent density and tap density, through the heating of heating furnace to the funnel and graduated flask in the device, build high temperature border, satisfied powder apparent density and tap density measurement demand under the high temperature, improved the measurement of efficiency of device. This experimental apparatus is because the measuring environment is inside, the effectual interference that has prevented external environment.
Drawings
FIG. 1 is an isometric view of the overall structure of a preferred embodiment of the invention;
fig. 2 is a front sectional view of the overall structure in the preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
The utility model relates to a powder bulk density measuring method under high temperature, including following step:
a device for measuring bulk density of powder at high temperature, referring to fig. 1 to 2: comprises a base 9, a driving device, a heating device, a heat preservation device and a measuring device;
the driving device comprises a cylinder 2 and an oscillator 7; the heating device comprises a heating furnace 3 for heating a sample to be detected, a heating funnel 12 for storing the sample to be detected, a stirrer 11 for pretreating the sample to be detected, a first blanking baffle 10 and a temperature sensor 5 for detecting the temperature of the sample to be detected; the heating funnel 12, the first blanking baffle 10, the temperature sensor 5 and the stirrer 11 are arranged in the heating furnace 3; the first blanking baffle 10 is arranged below the opening of the heating funnel 12, and the stirrer 11 is arranged in the middle of the heating furnace 3;
the heat preservation device comprises a first heat preservation furnace 13, a heat preservation funnel 14, a temperature sensor 5 and a second blanking baffle 15, wherein the heat preservation funnel 14, the temperature sensor 5 and the second blanking baffle 15 are arranged in the first heat preservation furnace 13, and the second blanking baffle 15 is arranged below a port 14 of the heat preservation funnel;
the measuring device comprises a second holding furnace 17, a powder scraping plate 6 for removing redundant samples to be measured, a measuring cylinder 16 with standard capacity, a metering supporting plate, an oscillator 7 and a weighing sensor, wherein the measuring cylinder 16 and the metering supporting plate are arranged in the second holding furnace 17, the powder scraping plate 6 is arranged above the contact surface of the measuring cylinder 16, the metering supporting plate is arranged below the contact surface of the measuring cylinder 16, and the weighing sensor is connected with the metering supporting plate.
Specifically, the device also comprises a cylinder support 1, a furnace support and an oscillator support 8. And the cylinder 2 is fixed on the cylinder support 1, and the bottom of the cylinder support 1 is fixed on the base 9. The oscillator support 8 is fixedly provided with an oscillator 7, and the bottom of the oscillator support 8 is fixedly arranged on a base 9. The cylinder 2 and the oscillator 7 are connected with a servo motor to control movement. The volume of the heat preservation funnel 14 is larger than that of the heating funnel 12, and the volume of the heat preservation funnel 14 is larger than that of the measuring cylinder 16.
The temperature adjusting ranges of the heating furnace 3, the first holding furnace 13 and the second holding furnace 17 are 20-800 ℃. And heat insulation layers are arranged on the peripheries of the heating furnace 3, the first heat preservation furnace 13 and the second heat preservation furnace 17. In this embodiment, the thermal insulation layer is made of thermal insulation material A l 2O 3. The heat preservation funnel 14, the heating funnel 12, the measuring cylinder 16 and the stirrer 11 are all made of 2Cr25N i20 stainless steel materials. The heating furnace 3, the first heat preservation furnace 13 and the second heat preservation furnace 17 are fixed on the furnace support, and the heating furnace support 4 is fixed on the base 9.
In this example, the load cell sensitivity was 1 mV/V.
The use method of the powder bulk density measuring device at high temperature comprises the following steps:
(1) before measurement, the switches of the weighing sensor, the heating furnace 3, the first holding furnace 13, the second holding furnace 17 and the stirrer 11 are respectively zeroed, and then the switches of the first blanking baffle 10, the second blanking baffle 15 and the powder scraping plate 6 are closed;
(2) adding powder to be detected into a heating funnel 12, and opening a stirrer 11 to pretreat the powder to be detected; after the treatment is finished, the switches of the heating furnace 3, the first heat preservation furnace 13 and the second heat preservation furnace 17 are opened, the temperature is adjusted, and the powder to be measured is continuously heated; observe temperature sensor 5's numerical value, when waiting for temperature sensor 5's numerical value to reach the assigned temperature, the powder is heated evenly for a period of heat preservation, opens first blanking baffle 10 switch afterwards, and the powder that awaits measuring freely falls to in the heat preservation funnel. After the heat-preservation funnel is filled with the powder to be detected, the first blanking baffle 10 is closed; after the powder is stabilized, slowly opening the second blanking baffle 15, after the powder to be detected freely flows into the measuring cylinder 16 from the heat-insulating funnel, and when the measuring cylinder 16 is full of powder and overflows, closing the second blanking baffle 15; pushing the powder on the top of the measuring cylinder 16 flat by using a powder scraping plate 6; and the weighing sensor reads final weight data, and the value is the stacking mass of the powder when the powder falls freely.
(3) After the value is measured, the oscillator 7 is controlled to tap the powder in the measuring cylinder 16, and after the powder is tapped, the weighing sensor reads weight data again, wherein the value is the stacking mass of the powder after tapping. In order to improve the accuracy of the experiment, multiple groups of measurement experiments need to be carried out, and finally, the average value is taken as the apparent density and the tap density of the powder.
(4) According to the steps, different temperatures are set, and the apparent density and the tap density of the powder at high temperature can be measured.
The utility model provides a powder bulk density measuring device under high temperature, simple structure, convenient to use measure accurately, utilize the funnel method to measure powder apparent density and tap density, through heating furnace 3 to the funnel and the 16 heats of graduated flask in the device, build the high temperature border, satisfied powder apparent density and tap density measurement demand under the high temperature, improved the measurement of efficiency of device. This experimental apparatus is because the measuring environment is inside, the effectual interference that has prevented external environment.
The above, only be the preferred embodiment of the present invention, but the design concept of the present invention is not limited to this, and any skilled person familiar with the technical field is in the technical scope disclosed in the present invention, and it is right to utilize this concept to perform insubstantial changes to the present invention, all belong to the act of infringing the protection scope of the present invention.
Claims (10)
1. The utility model provides a powder bulk density measuring device under high temperature which characterized in that: comprises a base, a driving device, a heating device, a heat preservation device and a measuring device;
the driving device comprises a cylinder and an oscillator; the heating device comprises a heating furnace for heating a sample to be detected, a heating funnel for storing the sample to be detected, a stirrer for pretreating the sample to be detected, a first blanking baffle and a temperature sensor for detecting the temperature of the sample to be detected; the heating funnel, the first blanking baffle, the temperature sensor and the stirrer are arranged in the heating furnace; the first blanking baffle is arranged below the heating funnel opening, and the stirrer is arranged in the middle of the heating furnace;
the heat preservation device comprises a first heat preservation furnace, a heat preservation funnel, a temperature sensor and a second blanking baffle, wherein the heat preservation funnel, the temperature sensor and the second blanking baffle are arranged in the first heat preservation furnace, and the second blanking baffle is arranged below a mouth of the heat preservation funnel;
the measuring device comprises a second heat-preserving furnace, a powder scraping plate for removing redundant samples to be measured, a measuring cylinder, a measuring supporting plate, an oscillator and a weighing sensor, the measuring cylinder and the measuring supporting plate are arranged in the second heat-preserving furnace, the powder scraping plate is arranged above a contact surface of the measuring cylinder, the measuring supporting plate is arranged below the contact surface of the measuring cylinder, and the weighing sensor is connected with the measuring supporting plate.
2. The apparatus for measuring bulk density of powder at high temperature according to claim 1, wherein: the device also comprises a cylinder support, a furnace support and an oscillator support.
3. The apparatus for measuring bulk density of powder at high temperature according to claim 1, wherein: the volume of the heat preservation funnel is larger than that of the heating funnel, and the volume of the heat preservation funnel is larger than that of the measuring cylinder.
4. The apparatus for measuring bulk density of powder at high temperature according to claim 1, wherein: the temperature adjusting ranges of the heating furnace, the first heat preserving furnace and the second heat preserving furnace are 20-800 ℃.
5. The apparatus for measuring bulk density of powder at high temperature according to claim 1, wherein: the sensitivity of the weighing sensor is 1 mV/V.
6. The apparatus for measuring bulk density of powder at high temperature according to claim 1, wherein: and heat insulation layers are arranged outside the heating furnace, the first heat preservation furnace and the second heat preservation furnace.
7. The apparatus for measuring bulk density of powder at high temperature according to claim 2, wherein: the heating furnace, the first heat preservation furnace and the second heat preservation furnace are fixed on the furnace support, and the heating furnace support is fixed on the base.
8. The apparatus for measuring bulk density of powder at high temperature according to claim 2, wherein: and an air cylinder is fixed on the air cylinder support, and the bottom of the air cylinder support is fixed on the base.
9. The apparatus for measuring bulk density of powder at high temperature according to claim 2, wherein: the oscillator is fixed on the oscillator support, and the bottom of the oscillator support is fixed on the base.
10. The apparatus for measuring bulk density of powder at high temperature according to claim 1, wherein: the cylinder and the oscillator are connected with a servo motor to control movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899051.7U CN211652429U (en) | 2019-11-06 | 2019-11-06 | Powder bulk density measuring device under high temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899051.7U CN211652429U (en) | 2019-11-06 | 2019-11-06 | Powder bulk density measuring device under high temperature |
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| CN211652429U true CN211652429U (en) | 2020-10-09 |
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| CN201921899051.7U Active CN211652429U (en) | 2019-11-06 | 2019-11-06 | Powder bulk density measuring device under high temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018757A (en) * | 2021-11-09 | 2022-02-08 | 黑龙江普莱德新材料科技有限公司 | Automatic device and method for accurately measuring tap density |
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2019
- 2019-11-06 CN CN201921899051.7U patent/CN211652429U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018757A (en) * | 2021-11-09 | 2022-02-08 | 黑龙江普莱德新材料科技有限公司 | Automatic device and method for accurately measuring tap density |
| CN114018757B (en) * | 2021-11-09 | 2023-10-13 | 中建材黑龙江石墨新材料有限公司 | Automatic device and method for accurately measuring tap density |
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