Powder fluidity testing device
By designing a powder flowability testing device, and utilizing a combination of a rotating shaft, weighing, and timing components, the problem of the inability of existing devices to accurately measure quantities was solved, enabling precise measurement of powder flowability, providing accurate flowability parameters, and reducing cost and complexity.
Patent Information
- Application Number
- CN202422871656.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing powder flowability testing devices cannot achieve accurate quantitative measurement, and are complex in structure, large in size, and expensive.
A powder flowability testing device was designed, comprising a powder container cavity, a rotating shaft, a weighing component, and a timing component. The rotating shaft drives the powder container cavity to rotate, and the powder flowability parameters are obtained by combining the weighing and timing components, thereby achieving quantitative measurement.
It enables precise quantitative measurement of powder flowability, provides more accurate flowability parameters, and provides a basis for subsequent processes. The device is small in size, simple in structure, low in cost, and easy to use.
Smart Images
Figure CN223597462U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chemical testing equipment technical field more specifically, relate to a powder fluidity testing device. BACKGROUND
[0002] In the process route of synchronous preparation of titanium tetrachloride by using titanium-containing blast furnace slag, the main process is high-temperature carbonization and low-temperature chlorination. Among them, the main equipment used in low-temperature chlorination process is fluidized bed, which has certain requirements for some characteristics of powder material itself, among which the fluidity of powder is an important indicator affecting the fluidization effect, that is, if the powder fluidity is not high enough, the fluidization effect will be poor, therefore, the fluidity of the powder needs to be characterized.
[0003] At present, the methods for characterizing the fluidity of powder mainly include repose angle method, particle size distribution method, shear method and Carr fluidity index method, etc. For example, there is a ring roller device that can measure the fluidity of powder at different temperatures, which includes a ring roller, a driving friction wheel, a driven friction wheel and a camera, etc. At the same time, the powder can be heated by using the resistance heating rod installed on the barrel wall, so that the spalling angle of the powder with different temperatures in the ring roller can be observed in real time to measure the fluidity of the powder.
[0004] However, the above-mentioned ring roller device for measuring the fluidity of powder has obvious shortcomings, that is, the method of using spalling angle to determine the fluidity size cannot realize accurate quantitative measurement, and the overall measurement device has large volume and complex structure, and the manufacturing cost is also relatively high. INVENTION CONTENTS
[0005] To solve the above technical problems, the utility model provides a kind of powder fluidity testing device, the size of powder fluidity can be more accurately determined, to provide more accurate fluidity parameter basis for subsequent process, overall volume is smaller and simple structure, manufacturing cost is lower, it is more convenient to use.
[0006] The powder fluidity testing device provided by the utility model comprises:
[0007] The powder containing cavity has a main cavity and a pipeline in communication with each other, and the end of the pipeline away from the main cavity has a switch member for controlling the opening and closing of the pipeline.
[0008] The rotating shaft is fixed to the outer peripheral part of the main cavity and is used to drive the rotation of the powder containing cavity.
[0009] The weighing component is placed below the outlet of the pipeline and is used to weigh the powder flowing out of the pipeline in real time.
[0010] Timing component for timing the powder flow out process, cooperating with the weighing component to assist in obtaining the powder flowability parameter.
[0011] Preferably, the powder flowability testing device further comprises:
[0012] Control component, in communication with the weighing component and the timing component to calculate the powder flowability parameter according to real-time weighing data and timing data.
[0013] Preferably, the powder flowability testing device further comprises:
[0014] Heating device having a heating cavity in which the powder containing cavity is placed, the heating cavity having a through hole allowing the rotating shaft to pass from the inside of the heating cavity to the outside.
[0015] Preferably, the powder flowability testing device has two pipes, each of which is connected to the opposite ends of the main cavity, and each of the two pipes has the switch component at the end away from the main cavity.
[0016] Preferably, the powder flowability testing device has a main cavity comprising:
[0017] A cylindrical sub-cavity coaxially arranged with the pipe;
[0018] Two bowl-shaped sub-cavities, each of which is in communication with the cylindrical sub-cavity and has the same diameter as the cylindrical sub-cavity at the first end and the same diameter as the pipe at the second end.
[0019] Preferably, the powder flowability testing device has an axial indication scale on the main cavity.
[0020] Preferably, the powder flowability testing device has an indication component on the rotating shaft near the free end for indicating the vertically downward direction.
[0021] Preferably, the powder flowability testing device further comprises:
[0022] A receiving tray placed on the weighing component for receiving the powder falling from the pipe, having a flat bottom and an edge part extending outwardly along the periphery of the bottom.
[0023] Preferably, the powder flowability testing device further comprises:
[0024] A liquid injection component having a circular injection tip, and the diameter of the injection tip is smaller than the diameter of the through hole.
[0025] Preferably, in the powder flowability testing device, the powder accommodating cavity is a glass powder accommodating cavity.
[0026] From the above technical solutions can be seen, the powder flowability testing device provided by the utility model, because including powder accommodating cavity, with the main cavity and pipeline that communicate with each other, the pipeline's end that is far from the main cavity has the switch piece for controlling the pipeline opening and closing, therefore when opening switch piece can put powder into the main cavity, when closing switch piece can guarantee that powder does not flow out from the pipeline part, because also including rotating shaft, with the outer circumferential part of the main cavity fixed, for driving the powder accommodating cavity rotates, therefore when closing the switch piece can rotate the rotating shaft to drive the powder accommodating cavity to rotate to make the powder in its interior mix evenly, because also including weighing component, place under the outlet of the pipeline, for the real-time weighing of the powder that flows out from the pipeline, also including timing component, for the timing of powder flow-out process, with the weighing component cooperates to assist to obtain powder flowability parameter, therefore can combine the weighing and experienced time of the flow-out powder to characterize the flow-out speed of powder simultaneously, realize the quantitative determination of powder flowability, so that the powder flowability testing device can more accurately determine the flowability size, provide more accurate flowability parameter basis for subsequent process, and does not need large equipment, the overall structure is smaller and simpler, the manufacturing cost is lower, and it is more convenient to use. BRIEF DESCRIPTION OF DRAWINGS
[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the drawings needed to be used in the embodiment or prior art description simple introduction, obviously, the drawings in the following description only the embodiment of the utility model, for those skilled in the art come, under the premise of not paying creative labor, can also obtain other drawings according to the drawings provided.
[0028] Figure 1 It is the schematic diagram of the embodiment of the powder flowability testing device provided by the utility model;
[0029] Figure 2 It is the powder flowability test result schematic diagram under normal temperature;
[0030] Figure 3 It is the powder flowability test result schematic diagram under high temperature;
[0031] Figure 4 It is the powder flowability test result schematic diagram of water-containing powder under high temperature. DETAILED DESCRIPTION
[0032] The utility model discloses a powder fluidity testing device, can more accurately determine the flowability of powder, provide more accurate flowability parameter basis for subsequent process, whole volume is smaller and simple structure, the production cost is lower, it is more convenient to use, can but not limited to be used for the flowability detection of carbonized slag.
[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0034] The utility model provides a kind of powder fluidity testing device's embodiment as shown in the figure, Figure 1 As shown in the figure, Figure 1 The utility model provides a kind of powder fluidity testing device's embodiment of the utility model can include:
[0035] Powder containing cavity 1, with mutually communicating main cavity 11 and pipeline 12, the volume of this main cavity 11 is larger, and it is the main space for containing powder, and the size of main cavity 11 can be selected according to the number of powder to be tested, the shape of this main cavity 11 is not limited, and it can be cylindrical cavity, square cavity, or other arbitrary shape cavity, such as irregular shape or ellipsoid etc., and the pipeline 12 is used for the path of powder entering and flowing out, in order to accurately test the flowability, the speed of powder flowing out cannot be too fast, therefore the inner diameter of pipeline 12 is less than the inner diameter of main cavity 11, so that powder flows down from the narrower path, and the specific inner diameter size can be selected according to the actual needs of flowability test, which is not limited here, the end of pipeline 12 away from main cavity 11 has switch piece 2 for controlling the opening and closing of pipeline 12, in this case, when switch piece 2 is opened, powder can be input into the powder containing cavity 1, and powder can also flow out from the powder containing cavity 1 to test the flowability, and when switch piece 2 is closed, the internal space of pipeline 12 can be completely isolated from the external environment, so that the powder can be limited in the powder containing cavity 1, and will not be thrown out, at this time, the powder containing cavity 1 can be rotated to mix the powder in it evenly, so as to provide conditions for powder flowability test;
[0036] The rotating shaft 3 is fixed with the outer peripheral part of the main cavity 11, and is used to drive the powder containing cavity 1 to rotate. It should be noted that the rotating shaft 3 and the main cavity 11 can be an integral whole. At this time, the main cavity 11 with the rotating shaft 3 can be directly manufactured by using a corresponding mold during manufacturing. Alternatively, the rotating shaft 3 and the main cavity 11 can be fixed together by using a clamping method, a threaded connection method or an adhesive method. Of course, other connection methods can also be selected. Here, the specific fixing position of the rotating shaft 3 is not limited, and the rotating shaft 3 can be located at the outer peripheral part of the main cavity 11. The upper and lower positions can be adjusted, but the upper and lower positions of the rotating shaft 3 are preferably located at the middle position of the outer peripheral part of the main cavity 11. In this way, the weights on both sides of the powder containing cavity 1 can be ensured to be approximately consistent during the rotation of the powder containing cavity 1, so that the stress is more balanced, and the powder in the main cavity can have higher uniformity. The shape of the rotating shaft 3 can be a circular rod, a square rod or other shapes, as long as the rotating shaft 3 can rotate effectively. Here, the shape of the rotating shaft 3 is not limited.
[0037] The weighing component 4 is located below the outlet of the pipeline 12, and is used to weigh the powder flowing out of the pipeline 12 in real time. It should be noted that the powder flowing out of the pipeline 12 is completely dependent on the action of gravity. If the flowability of the powder is good, the flow speed is fast, and the weight measured by the weighing component 4 increases faster. Conversely, the weight measured by the weighing component 4 increases slower. In this way, the flowability of the powder can be quantitatively characterized. The weighing component can be an electronic scale, a mechanical scale or an automatic check weighing scale. The weighing component can be selected according to actual needs. Moreover, a portable weighing component with a small volume can be selected. In this way, the weighing component can be easily moved to below the pipeline 12 where the flowability of the powder needs to be measured. When the measurement is completed, the weighing component can be easily taken away. For the overall measurement process, more time is saved.
[0038] The timing component 5 is used to time the powder flowing out process, and cooperates with the weighing component 4 to assist in obtaining the flowability parameter of the powder. In this case, when the powder starts to flow out, the timing function of the timing component 5 can be started. During the entire process of the powder flowing out, several time points can be selected, such as the fifth second, the tenth second, the fifteenth second, etc. When these time points are reached, the weight measured by the weighing component 4 is recorded. In this way, the weight of the powder flowing out at each time can be quantitatively known. By plotting or software processing these data, quantitative powder flowability data can be obtained. If the flowability of a batch of powder is high, the weight measured by the weighing component 4 changes faster. Conversely, the weight measured by the weighing component 4 changes slower. As can be seen, the flowability of the powder can be quantitatively obtained. When it is determined that the flowability of the powder is not good enough, the powder is prevented from entering the fluidized bed for subsequent processes, so as to avoid process defects. Only when it is determined that the flowability of the powder is good enough, the powder can enter the fluidized bed. In this way, the process effect can be ensured to be good enough, and the probability of process defects can be reduced.
[0039] From the above technical solutions can be seen, the embodiment of the powder flowability testing device provided by the utility model, because including powder containing cavity, with each other intercommunication main cavity and pipeline, the pipeline is away from the main cavity one end has for controlling the pipeline opening and closing switch spare, therefore when opening switch spare can put powder into main cavity, when closing switch spare can guarantee that the powder does not flow out from the pipeline part, because still including rotating shaft, with the outer circumferential part of main cavity fixed, for driving powder containing cavity rotation, therefore when closing the switch spare can rotate the rotating shaft to drive powder containing cavity rotation to make its internal powder constantly mixes evenly, because still including weighing component, place in the pipeline export below, for the powder that flows out from the pipeline carries out real-time weighing, still including timing component, for the powder flow-out process carries out timing, with weighing component cooperation to assist to obtain powder flowability parameter, therefore can simultaneously combine the weighing and experienced time of flowing powder to characterize the flow-out speed of powder, realizes the quantitative determination powder flowability, so that the powder flowability testing device can more accurately determine the flowability size, provides more accurate flowability parameter basis for subsequent process, and does not need large equipment, overall structure is smaller and simple, the manufacturing cost is lower, is more convenient to use.
[0040] In one specific embodiment of the above-mentioned powder flowability testing device, with reference to Figure 1 The device can further include:
[0041] a control assembly 6, which is in communication with the weighing component 4 and the timing component 5 to calculate the powder flowability parameter according to the real-time weighing data and timing data. It should be noted that, by using the control assembly 6, more and more precise weighing data and timing data can be obtained, that is, the sampling time interval of the weighing data can be set to be smaller, for example, as low as 0.1 second, so that a more precise graph of the powder weight change over time can be drawn, thereby allowing relevant personnel to have a more intuitive understanding of the powder flowability and better ensure the accuracy of the powder flowability test results.
[0042] It also needs to be explained that the powder flowability test scheme in the prior art uses resistance heating rods installed on the cylinder wall to heat the powder, but this method also has a problem that it cannot guarantee the uniformity of the overall heating of the powder. After all, it can only heat the powder close to the cylinder wall first, and then continuously transmit to the powder located inside through heat conduction to heat the internal powder. This heat transfer method relying on powder heat conduction inevitably has the problem of unevenness. To solve this problem, in another specific embodiment of the above powder flowability testing device, a heating device can also be included. This heating device can have a heating cavity that can place the powder containing cavity 1, and the heating cavity is provided with a through hole that can allow the rotating shaft to pass from the inside of the heating cavity to the outside direction. Specifically, the heating device can be but not limited to a muffle furnace. The heating process of this heating device can ensure that all spaces inside the heating cavity have the same high temperature. When the powder containing cavity 1 is placed in the heating cavity, the powder inside it can all be in the same high temperature environment, and the rotation of the powder itself can also ensure that the powder can be in contact with the high temperature environment in the heating cavity. In this way, direct heating of the high temperature environment to all the powder is realized, and the heat transfer between the powder is no longer needed, so that the powder heating is more uniform. This embodiment is suitable for testing the flowability of the powder at different temperatures. Specifically, when the flowability of the powder at different temperatures needs to be tested, the temperature of the heating device can be adjusted to the corresponding temperature, and then the powder containing cavity 1 is placed in the heating cavity of the heating device. The rotating shaft is then extended from the through hole of the heating cavity to the outside and connected to the rotating drive device. While using the heating device to heat the powder in the powder containing cavity 1, the rotating drive device can be used to drive the powder containing cavity 1 to rotate. In this way, the powder with a certain temperature and uniformity can be obtained, and then the flowability test can be performed to obtain the powder flowability test result at a certain temperature. When the flowability of the powder at other temperatures needs to be tested, the heating temperature of the heating device can be set to the corresponding temperature value, and the same rotation and test can be performed. The rotating drive device can be a motor. The motor connected to the rotating shaft can realize uniform rotation. The speed of the motor can be adjusted according to actual needs. In some cases, other ways of rotation can also be used. The rotating shaft can also be rotated manually. This place is not limited.
[0043] In another specific embodiment of the above powder flowability testing device, continuing to refer to Figure 1, the number of the pipes 12 can be preferably two, and respectively communicated with two ends of the main cavity 11 which are away from each other, and the ends of the two pipes 12 which are away from the main cavity 11 are provided with the switch element 2, in this case, the two ends of the main cavity 11 are symmetrically structured, so that the force during rotation can be more balanced, and the mixing uniformity of the powder can be further improved, and in this case, the powder can be put into and flowed out from any one of the pipes 12 for testing, so that the operation is more convenient.
[0044] Further, with continuous reference to Figure 1 , the main cavity 11 can include:
[0045] The cylindrical sub-cavity 111 is coaxially arranged with the pipe 12, which is the main part for containing the powder, and the inner diameter thereof can be selected according to the actual amount of the powder to be contained, and in one preferred example, the inner diameter is 100 mm and the height is 75 mm;
[0046] The two bowl-shaped sub-cavities 112 are both communicated with the cylindrical sub-cavity 111, and the first end thereof is the same as the diameter of the cylindrical sub-cavity 111, and the second end thereof is the same as the diameter of the pipe 12, and the bowl-shaped sub-cavity 112 can form a transition area between the cylindrical sub-cavity 111 and the pipe 12, and the inner surface thereof can be a plane or an arc surface, as long as the powder can naturally fall to the pipe 12 under the action of gravity, and when the bowl-shaped sub-cavity 112 is a plane, the angle between the inner surface thereof and the axial direction of the device can be preferably 30°, and the height of the bowl-shaped sub-cavity 112 can be preferably 75 mm, so that the powder can move downward faster, and the friction between the powder and the inner surface of the bowl-shaped sub-cavity 112 will not affect the moving speed, and of course, the angle and the height can be adaptively adjusted according to actual needs, and the connection between the bowl-shaped sub-cavity 112 and the pipe 12 can be preferably arc-shaped transition, so as to avoid the accumulation of the powder at the connection and affect the flowability measurement results, and the preferred diameter of the pipe 12 can be 10 mm, and the height can be 150 mm, and of course, the diameter and the height can be adaptively adjusted according to actual needs, which are not limited herein.
[0047] Further, with continuous reference to Figure 1, the main cavity 11 has an axial indicating scale 7, which can be used to indicate the weight of the powder corresponding to each position. This can be calibrated in advance, specifically, the weight of the powder in the cavity can be obtained by multiplying the powder density and the volume corresponding to each scale position, and the weight is calibrated on the indicating scale. In this case, during the process of the powder falling under the action of gravity, the relevant personnel can know the weight value of the powder in the device at each moment by directly observing the indicating scale. Accordingly, a graph can be drawn, and ultimately the quantitative powder flowability parameter can be obtained. It can be seen that this provides another powder flowability measurement method. Without the cooperation of the weighing component 4, the powder flowability measurement can also be realized, thereby further improving the convenience of using the device.
[0048] In the above-mentioned various embodiments of the powder flowability testing device, further referring to Figure 1 , the part near the free end of the rotating shaft 3 can be provided with an indicating component 31 for indicating the vertically downward direction. The indicating component 31 can be a straight rod perpendicular to the rotating shaft 3, and can be integrated with the rotating shaft 3, or can be connected by clamping, threading or riveting, etc. Herein, it is not limited. By using the indicating component 31, the relevant personnel can determine from the external environment whether the pipeline 12 is in the vertically downward state, so that the powder flowability measurement can be performed without taking it out from the heating cavity. In addition, the rotating shaft 3 can be provided with two, when one rotating shaft is provided with such an indicating component 31, the other rotating shaft can be connected to the rotating driving device to realize rotation. This can be selected according to actual needs.
[0049] In the above-mentioned various embodiments of the powder flowability testing device, referring to Figure 1 , the device can further include a receiving tray 8 placed on the weighing component 4 for receiving the powder falling from the pipeline 12. The receiving tray 8 has a flat bottom 81 and an edge portion 82 extending outwardly and obliquely along the periphery of the bottom. Such an edge portion 82 can avoid environmental pollution caused by the falling of too much powder on the ground. The edge portion 82 can be flat or arc-shaped. When using such a receiving tray 8, the weighing component needs to be zeroed after being placed on the weighing component to realize peeling, so as to avoid the influence of the weight of the weighing component itself on the measurement of the weight of the powder. In addition, the size of the receiving tray 8 can be determined according to the amount of powder to be contained. When the falling powder is more, a larger volume receiving tray is needed, and when the falling powder is less, a smaller volume receiving tray can be selected. Herein, it is not limited.
[0050] In the above-mentioned embodiments of the powder flowability testing device, a liquid injection component can also be included, which has a circular injection tip with a diameter smaller than that of the through hole. The liquid injection component can be used to inject a certain amount of liquid, such as water, into the through hole, so that the flowability of the powder containing a certain amount of water can be measured, and the application range of the device is wider. The liquid injection component can be a syringe or other types of injection components, which are not limited herein.
[0051] In the above-mentioned embodiments of the powder flowability testing device, the powder containing cavity 1 can be preferably made of glass. The glass material has a smooth surface, which is not easy to cause powder adhesion and residue, and does not affect the powder leaving speed. The strength of the glass material is large enough, and it is easy to manufacture. The powder containing cavity 1 can be manufactured integrally with the rotating shaft 3, so that the connection is more firm. If the test temperature is room temperature to 100℃, the transparent sodium calcium silicon glass can be used, and if the temperature is 100℃ to 1000℃, the near-transparent quartz glass can be used to adapt to the high-temperature environment. Of course, other materials can also be selected according to actual needs, which are not limited herein.
[0052] The process of using the above-mentioned powder flowability testing device to test the powder flowability can be as follows:
[0053] First step: the measured powder is preloaded into the powder flowability testing device. One-third to two-thirds of the total volume of the device can be filled with powder, and the switch part (cover plate) is closed.
[0054] Second step: the entire powder flowability testing device is placed in a muffle furnace with a side hole (for powder flowability testing at room temperature, this step of heating in the muffle furnace is not needed). The entire powder flowability testing device is rotated to uniformly heat the powder to the required temperature.
[0055] Third step: the indication component (i.e. the vertical mark) is observed to ensure that the powder can be vertically discharged, and the weight and corresponding time of the falling powder are recorded synchronously.
[0056] Fourth step: the relationship curve between the weight and time of the falling powder is obtained, so as to quantitatively characterize the flowability of the powder.
[0057] Further, when the flowability of the powder containing a certain amount of water needs to be detected, the end switch part is opened, the liquid injection component is inserted into the pipeline, and a suitable amount of water is quickly added and uniformly mixed. Then, the third and fourth steps are used for measurement.
[0058] The above-mentioned testing process is described below by taking three examples:
[0059] Example one:
[0060] The flowability of slag powder containing 13.5-14.5% titanium carbide at room temperature was tested. First, the switch was turned on, and 981g of the powder to be measured was pre-loaded into the testing device. The switch was then closed, and the powder was fed vertically. The relationship between the powder mass and time was recorded simultaneously by observing the indicator scale. The vertical axis represents the powder mass in grams, and the horizontal axis represents the falling time in seconds. A graph was plotted to obtain the flowability of the titanium carbide-containing slag powder at room temperature. (Details are shown below.) Figure 2 As shown, Figure 2 This is a schematic diagram of the powder flowability test results at room temperature. It can be seen that the powder completely falls after about 40 seconds at room temperature, which can provide a quantitative basis for flowability.
[0061] Example 2:
[0062] The flowability of high-temperature titanium carbide-containing slag powder (13.5-14.5%) was tested. First, the switch was turned on, and 981g of the powder to be measured was pre-loaded into the testing device. The switch was then closed, and the entire testing device was placed inside a muffle furnace. Rotation was started to uniformly heat the powder to 600℃ and hold for 30 minutes. The position of the testing device was adjusted, and the vertical mark was observed to ensure vertical powder feeding. The relationship between powder mass and time was recorded simultaneously. The vertical axis represents powder mass in grams, and the horizontal axis represents falling time in seconds. A graph was plotted to obtain the flowability of the high-temperature titanium carbide-containing slag powder. (Details are shown below.) Figure 3 As shown, Figure 3 This is a schematic diagram of the powder flowability test results at high temperature. It can be seen that under these high temperature conditions, the powder completely falls after about 30 seconds, which provides a quantitative basis for the flowability of powder at high temperature.
[0063] Example three:
[0064] The flowability of high-temperature slag powder with 2% water content and 13.5-14.5% titanium carbide content was tested. First, the switch was turned on, and 981g of the powder to be measured was pre-loaded into the testing device. The switch was then closed, and the entire testing device was placed in a muffle furnace. Rotation was started to uniformly heat the powder to 605℃ and hold for 30 minutes. Next, the feeding cover at the end of the feed leg was opened, and water (2% of the powder mass) was quickly added using a syringe and mixed thoroughly. Finally, the position of the testing device was adjusted, and the vertical mark was observed to ensure vertical powder feeding. The relationship between powder mass and time within the device was recorded simultaneously. The vertical axis represents the powder mass in grams, and the horizontal axis represents the falling time in seconds. A graph was plotted to obtain the flowability of the high-temperature slag powder with water content and titanium carbide content. (Details are shown below.) Figure 4 As shown, Figure 4As shown in the diagram of the flowability test results of the high-temperature water-containing powder, it can be seen that after about 35 seconds, the powder falls down completely under the high-temperature water-containing condition, thereby providing a quantitative basis for the flowability of the high-temperature water-containing powder.
[0065] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A powder flowability testing device, characterized by, The application relates to a powder flowability parameter testing device, which comprises the following parts: a powder accommodating cavity with a main cavity and a pipeline in communication with each other, wherein one end of the pipeline away from the main cavity is provided with a switch part for controlling the opening and closing of the pipeline; a rotating shaft fixed to the outer peripheral part of the main cavity for driving the powder accommodating cavity to rotate; a weighing part arranged below the outlet of the pipeline for weighing the powder flowing out of the pipeline in real time; a timing part for timing the powder flowing process and cooperating with the weighing part to assist in obtaining the powder flowability parameter.
2. The powder flowability testing apparatus according to claim 1, wherein The application further comprises: a control assembly in communication connection with the weighing part and the timing part to calculate the powder flowability parameter according to the real-time weighing data and timing data.
3. The powder flowability testing apparatus according to claim 2, wherein The application further comprises: a heating device with a heating cavity in which the powder accommodating cavity can be arranged, wherein the heating cavity is provided with a through hole allowing the rotating shaft to pass from the inside of the heating cavity to the outside.
4. The powder flowability testing apparatus according to claim 3, wherein The number of the pipelines is two, and the pipelines are respectively communicated with two opposite ends of the main cavity, and the two ends of the pipelines away from the main cavity are respectively provided with the switch parts.
5. The powder flowability testing apparatus according to claim 4, wherein The main cavity comprises: a cylindrical sub-cavity coaxially arranged with the pipeline; two bowl-shaped sub-cavities in communication with the cylindrical sub-cavity, and the first end of each bowl-shaped sub-cavity is the same in diameter with the cylindrical sub-cavity, and the second end is the same in diameter with the pipeline.
6. The powder flowability testing apparatus according to claim 5, wherein The main cavity is provided with an indicating scale in the axial direction.
7. The powder flow tester of any one of claims 1 to 6, wherein The rotating shaft is provided with an indicating part near the free end for indicating the vertically downward direction.
8. The powder flow tester of any one of claims 1 to 6, wherein The application further comprises: a receiving disc arranged on the weighing part for receiving the powder falling from the pipeline, which has a flat bottom and an edge part extending outwardly along the periphery of the bottom.
9. The powder flow tester of any one of claims 3 to 6, wherein, The application further comprises: a liquid injection part with a circular injection front end, and the diameter of the injection front end is smaller than that of the through hole.
10. The powder flow tester of any one of claims 1 to 6, wherein The powder accommodating cavity is made of glass.