CN118744898A - Powder feeding machine and powder feeding system - Google Patents

Abstract

A powder feeder and a powder feeding system, the powder feeder includes a mounting body and a hopper, a turntable, a flattening mechanism, a scraping mechanism, a scraping mechanism, a receiving assembly and a discharging assembly mounted on the mounting body; wherein the hopper is configured to hold powder, and the powder can fall from the hopper onto the turntable, and the turntable is configured to be rotatable; the flattening mechanism is configured to flatten the powder on the turntable during its rotation, the scraping mechanism is configured to scrape the powder at the edge of the turntable into the receiving assembly, the scraping mechanism is configured to scrape the powder flattened by the flattening mechanism from the turntable into the discharging assembly, and the discharging assembly is configured to output the powder. The powder feeder provided in the embodiment of the present application can stably and accurately output the powder at a certain discharging speed, and the powder feeder has a simple structure and is easy to operate.

Description

Powder feeding machine and powder feeding system

Technical Field

The present invention relates to the technical field of powder conveying, and in particular to a powder feeder and a powder feeding system.

Background Art

A powder feeder is a device used to evenly distribute powder materials to various devices or systems to meet the needs of production processes. There are many types of powder feeders, depending on the different powder materials and process requirements. Common ones include: spiral powder feeders, impeller powder feeders, and vibrating powder feeders.

At present, micro powder feeders have important application prospects in the energy, chemical, pharmaceutical, food and other industries. They can improve production efficiency, reduce production costs, improve product quality, adapt to personalized needs and promote intelligent development, and contribute to the progress and development of the industry. Traditional commercial micro powder feeders are increasingly unable to meet related needs.

The various commercial micro powder feeders currently have the following development shortcomings: (1) The powder feeding accuracy is not high. In some equipment, the accuracy of adjusting and controlling the feeding amount is not enough, resulting in insufficient feeding accuracy, especially in industries that require precise proportioning and control, such as energy, chemical industry, and medicine. (2) The structure is too complicated. The structural design of some commercial micro powder feeders is relatively complex, requiring the operator to have certain operating experience and technical knowledge, and also to be relatively responsible for the subsequent cleaning and maintenance work.

Summary of the invention

The embodiments of the present application provide a powder feeder and a powder feeding system to solve the problems of low feeding accuracy and complex structure of current powder feeders.

The embodiment of the present application provides a powder feeder, comprising a mounting body and a hopper, a rotating disk, a flattening mechanism, an edge scraping mechanism, a material scraping mechanism, a material receiving assembly and a material discharging assembly mounted on the mounting body;

Wherein, the hopper is configured to hold powder, and the powder can fall from the hopper onto the turntable, and the turntable is configured to be rotatable; the flattening mechanism is configured to flatten the powder on the turntable during the rotation of the turntable, the scraping mechanism is configured to scrape the powder at the edge of the turntable into the receiving component, the scraping mechanism is configured to scrape the powder flattened by the flattening mechanism from the turntable into the discharging component, and the discharging component is configured to output the powder.

In one embodiment, the flattening mechanism comprises a flattening scraper located above the rotating disk and a first mounting frame mounted on the mounting body, and the flattening scraper is adjustably connected to the first mounting frame so that the gap between the flattening scraper and the rotating disk and/or the position of the flattening scraper on the rotating disk can be adjusted;

The scraping mechanism comprises a scraping blade located above the rotating disk and a second mounting frame mounted on the mounting body; wherein the scraping blade is adjustably connected to the second mounting frame so that the gap between the scraping blade and the rotating disk and/or the position of the scraping blade on the rotating disk can be adjusted;

The scraper mechanism includes a scraper blade located above the turntable and a third mounting frame mounted on the mounting body; wherein the scraper blade is adjustably connected to the second mounting frame so that the gap between the scraper blade and the turntable and/or the position of the scraper blade on the turntable can be adjusted.

In one embodiment, the first mounting frame, the second mounting frame and the third mounting frame respectively include threaded rods with threads, and the flattening scraper, the edge scraper and the material scraper are respectively provided with sleeves for sleeves on the threaded rods, and the sleeves are configured to be rotatable relative to the threaded rod and movable up and down relative to the threaded rod, and the threaded rod is provided with a locking nut for locking the sleeve on the threaded rod.

In one embodiment, it further comprises a sealing cover, which is mounted on the mounting body and cooperates with the mounting body to form a sealing cavity; the hopper, the rotating disk, the flattening mechanism, the edge scraping mechanism, and the material scraping mechanism are all located in the sealing cavity;

The material receiving assembly comprises a material receiving cylinder for receiving the powder material scraped off by the scraping mechanism, and the material discharging assembly comprises a material discharging cylinder for receiving the powder material scraped off by the scraping mechanism, and at least the upper end openings of the material receiving cylinder and the material discharging cylinder are located in the sealing cavity;

Among them, the sealed cavity is connected to an upper air inlet pipe, and the discharge barrel is connected to a discharge pipe and a lower air inlet pipe located outside the sealed cavity. When gas is respectively introduced into the upper air inlet pipe and the lower air inlet pipe, the powder in the discharge barrel is sprayed out from the discharge pipe under the pressure difference between the upper air pressure and the lower air pressure.

In one embodiment, the discharge pipe and the lower air inlet pipe form a bifurcated structure, wherein the lower air inlet pipe is located below the discharge pipe.

In one embodiment, the discharge pipe is inclined upward compared to the water direction along the direction away from the bifurcation point; and/or the lower air inlet pipe is inclined downward compared to the horizontal direction along the direction away from the bifurcation point.

In one embodiment, a collecting container is further included, and the collecting container is detachably connected to the receiving barrel.

In one embodiment, the mounting body includes a circular base, and the hopper, the turntable, the flattening mechanism, the scraping mechanism, the scraping mechanism, the receiving barrel and the discharging barrel are all mounted on the base, and the sealing cover is a cylindrical structure, which is sealed with the base.

In one embodiment, the hopper is provided with a material discharge outlet at one end close to the turntable, and an adjustment baffle is provided at the material discharge outlet, and the adjustment baffle is configured to be able to close the material discharge outlet and adjust the size of the material discharge outlet.

In one embodiment, it further includes a driving motor for driving the turntable to rotate, and the driving motor is a variable frequency servo motor.

In one embodiment, it further includes a stirring component located in the hopper, and the rotating shaft of the turntable extends into the hopper and is connected to the stirring component, so that the turntable and the stirring component rotate synchronously.

An embodiment of the present application further provides a powder feeding system, comprising a weighing device, a data processing device and the powder feeder as described above, wherein the weighing device is configured to weigh the powder feeder during the feeding process of the powder feeder and send the weight data to the data processing device, and the data processing device processes the data.

The technical solution provided in the embodiment of the present application can make the powder material falling on the turntable be evenly transported to the discharging assembly by setting a flattening mechanism, a scraping mechanism, and a scraping mechanism, so that the powder material can be stably and accurately discharged from the discharging assembly at a certain discharging speed, and realize continuous and stable feeding of the powder material. Moreover, the solution provided in the present application realizes the method of discharging the powder material by rotating the turntable and scraping the material from the turntable, which has a simple structure, convenient operation, and easy cleaning and maintenance.

Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

FIG1 is a schematic structural diagram of a powder feeder according to an embodiment of the present application;

FIG2 is a schematic structural diagram of a sealing cover of a powder feeder in an open state according to an embodiment of the present application;

FIG3 is an enlarged view of point A in FIG2 ;

FIG4 is a schematic structural diagram of a powder feeder without a sealing cover installed according to an embodiment of the present application;

FIG5 is a schematic diagram of the structure of a powder feeding system according to an embodiment of the present application.

Description of reference numerals:

1-base; 2-sealing cover; 21-upper air inlet pipe; 3-sealing ring; 4-turntable; 5-flattening mechanism; 51-flattening scraper; 52-first mounting frame; 6-scraping mechanism; 61-scraping scraper; 611-sleeve; 612-connecting arm; 62-second mounting frame; 63-locking nut; 7-scraping mechanism; 71-scraping scraper; 72-third mounting frame; 8-discharging assembly; 81-discharging barrel; 82-discharging pipe; 83-lower air inlet pipe; 9-collecting assembly; 91-collecting barrel; 92-collecting container; 10-driving motor; 11-support frame; 12-hopper; 121-discharging outlet; 122-adjusting baffle; 123-adjusting bolt; 13-fixing chuck; 14-fixing column; 15-clamp; 100-powder feeder; 200-weighing device; 300-data processing device.

DETAILED DESCRIPTION

The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme. Therefore, it should be understood that any feature shown and/or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

In addition, when describing representative embodiments, the specification may have presented the method and/or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and/or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

An embodiment of the present application provides a powder feeder, as shown in Figures 1 to 4, including a mounting body and a hopper 12 mounted on the mounting body, a turntable 4, a flattening mechanism 5, a scraping mechanism 6, a scraping mechanism 7, a discharging assembly 8 and a receiving assembly 9.

Among them, the hopper 12 is configured to hold powder, and the powder can fall from the hopper 12 onto the turntable 4, and the turntable 4 is configured to be able to rotate; the flattening mechanism 5 is configured to flatten the powder on the turntable 4 during the rotation of the turntable 4, the scraping mechanism 5 is configured to scrape the powder at the edge of the turntable 4 into the receiving component 9, and the scraping mechanism 7 is configured to scrape the powder flattened by the flattening mechanism 5 from the turntable 4 to the discharging component 8, and the discharging component 8 is configured to output the powder.

The technical solution provided by the embodiment of the present application can make the powder material falling on the turntable 4 be uniformly transported to the discharging assembly 8 by setting the flattening mechanism 5, the scraping mechanism 6, and the scraping mechanism 7, so that the powder material falling on the turntable 4 can be uniformly transported to the discharging assembly 8, so that the discharging assembly 8 can realize continuous and stable feeding of the powder material. Among them, the flattening mechanism 5 is used to flatten the powder material falling on the turntable 4, and the scraping mechanism 6 hangs the powder material at the edge of the turntable 4 into the receiving assembly 9. The scraping mechanism 6 can not only prevent the powder material at the edge of the turntable 4 from falling to the periphery of the turntable 4 and causing waste of powder material, but also facilitate the flattening mechanism 5 to more easily flatten the powder material on the turntable 4 to be uniform, especially the powder material near the edge of the turntable 4 can be evenly distributed. After the powder material on the turntable 4 is evenly flattened, the scraping mechanism 7 can scrape the powder material on the turntable 4 into the discharging assembly 8 at a uniform speed during the rotation of the turntable 4, so that the powder material can be stably and accurately output from the discharging assembly 8 at a certain discharging speed.

Moreover, the solution provided by the present application realizes the powder output by rotating the turntable 4 and scraping the material from the turntable 4, which has a simple structure, convenient operation, and easy cleaning and maintenance. The powder feeder provided by the embodiment of the present application is suitable for the powder supply needs of multiple industries such as energy, chemical industry, medicine, and food.

In one embodiment, as shown in Figures 2 and 3, the flattening mechanism 5 includes a flattening scraper 51 located above the turntable 4 and a first mounting frame 52 mounted on the mounting body, and the flattening scraper 51 is adjustably connected to the first mounting frame 52 so that the gap between the flattening scraper 51 and the turntable 4 and/or the position of the flattening scraper 51 on the turntable 4 can be adjusted.

The scraping mechanism 6 includes a scraping blade 61 located above the turntable 4 and a second mounting frame 62 mounted on the mounting body; wherein the scraping blade 61 is adjustably connected to the second mounting frame 62 so that the gap between the scraping blade 61 and the turntable 4 and/or the position of the scraping blade 61 on the turntable 4 can be adjusted.

The scraper mechanism 7 includes a scraper blade 71 located above the turntable 4 and a third mounting frame 72 mounted on the mounting body; wherein the scraper blade 71 is adjustably connected to the second mounting frame 72 so that the gap between the scraper blade 71 and the turntable 4 and/or the position of the scraper blade 71 on the turntable 4 can be adjusted.

Optionally, the first mounting frame 52, the second mounting frame 62 and the third mounting frame 72 respectively include threaded rods with threads, and the flattening scraper 51, the edge scraper 61 and the material scraper 71 are respectively provided with sleeves 611 for sleeves on the threaded rods, and the sleeves 611 are configured to be rotatable relative to the threaded rods and movable up and down relative to the threaded rods, and the threaded rods are provided with locking nuts 63 for locking the sleeves 611 on the threaded rods.

FIG3 clearly shows the structure of the scraper 61 and the second mounting frame 62. The second mounting frame 62 includes a threaded rod with threads. The scraper 61 is connected to a sleeve 611 through a connecting arm 612. The sleeve 611 is sleeved on the threaded rod. The threaded rod is provided with locking nuts 63 located at the upper and lower ends of the sleeve 611. The position of the scraper 61 on the turntable 4 can be adjusted by rotating the sleeve 611 relative to the threaded rod, and the sleeve 611 can be moved up and down along the threaded rod to adjust the height position of the scraper 61. When the scraper 61 is adjusted to a suitable position, the sleeve 611 can be locked by the locking nuts 63 at the upper and lower ends of the sleeve 611, so that the position of the scraper 61 is locked. The arrangement of the flattening scraper 51 and the scraping scraper 71 is basically the same as the arrangement of the scraper 61. Among them, since the flattening scraper 51 is used to flatten the powder, the gap between the flattening scraper 51 and the turntable 4 can be set according to the flattening thickness of the powder to be achieved, and the scraper 61 is used to scrape the powder on the edge of the turntable 4. Therefore, the scraper 61 is located at the edge of the turntable 4 and close to the turntable 4. The scraper 71 is also set to be close to the turntable 4 to scrape the powder on the turntable 4. By adjusting the angle and position of the scraper 71 on the turntable 4, the amount of powder scraped off per unit time can be adjusted.

In one embodiment, the powder is scraped from the turntable 4 into the discharging assembly 8 by the scraping mechanism 7 and then discharged from the discharging assembly 8 by pneumatic force. The use of pneumatic conveying of powder can prevent the problem of uneven and unstable powder output caused by powder agglomeration or getting stuck at a bend.

As shown in the example of Figures 1 and 2, the feeder also includes a sealing cover 2, which is installed on the installation body and cooperates with the installation body to form a sealed cavity; the hopper 12, the turntable 4, the flattening mechanism 5, the scraping mechanism 6, and the scraping mechanism 7 are all located in the sealed cavity. The receiving assembly 9 includes a receiving barrel 91 for receiving the powder scraped by the scraping mechanism 6, and the discharging assembly 8 includes a discharging barrel 81 for receiving the powder scraped by the scraping mechanism 7. At least the upper end openings of the discharging barrel 81 and the receiving barrel 91 are located in the sealed cavity; wherein the sealed cavity is connected to the upper air inlet pipe 21, and Figures 1 and 2 show that the upper air inlet pipe 21 is arranged on the sealing cover 2. The discharging barrel 81 is connected to a discharging pipe 82 and a lower air inlet pipe 83 located outside the sealed cavity. When gas is introduced into the upper air inlet pipe 21 and the lower air inlet pipe 83 respectively, the powder in the discharging barrel 81 is ejected from the discharging pipe 82 under the pressure difference between the upper air pressure and the lower air pressure.

Specifically, gas is introduced into the sealed cavity through the upper air inlet pipe 21, so that the sealed cavity has a certain pressure, and thus after the powder enters the discharge tube 81, the pressure above the powder is the pressure in the sealed cavity, and the powder flows downward under the action of the gas pressure above, and after the gas is introduced into the lower air inlet pipe 83, the gas below exerts an upward gas pressure on the powder, and the powder is ejected from the discharge pipe 82 under the pressure difference between the upper air pressure and the lower air pressure, thereby realizing pneumatic conveying. This pneumatic conveying method is simple and can ensure the stability and accuracy of powder conveying for a long time.

In one example, the discharge pipe 82 and the lower air inlet pipe 83 form a bifurcated structure, and the lower air inlet pipe 83 is located below the discharge pipe 82. In this way, the downward air pressure from the discharge barrel 81 will push the powder downward, and upward air pressure is formed in the lower air inlet pipe 83, while the air pressure in the discharge pipe 82 is low, so that the powder is pushed by the upward airflow and the downward airflow and ejected from the discharge pipe 82.

Optionally, the discharge pipe 82 is tilted upward in a direction away from the bifurcation point of the bifurcation structure compared to the water direction, and the lower air inlet pipe 83 is tilted downward in a direction away from the bifurcation point compared to the horizontal direction. In the case where the upper air inlet pipe 21 and the lower air inlet pipe 83 are not ventilated, such as in the process of calibrating the powder feeder in an example described below, the powder can flow out from the lower air inlet pipe 83, while the discharge pipe 82 is tilted upward and the powder will not flow out.

It can be understood that the way in which the discharge component 8 outputs the powder is not limited to the method of achieving pneumatic conveying by the pressure difference between the upper air pressure and the lower air pressure as described above. It can also be, for example, that air force is applied only from the top, or the powder is output only by gravity. However, in the present application, the above-mentioned method of applying air force from the top and applying air force from the bottom, and the powder is ejected from the outlet of the discharge pipe under the action of the pressure difference, can more accurately convey the powder at a predetermined feeding speed.

In the example shown in Figures 1-3, the installation body includes a circular base 1, and the hopper 12, turntable 4, flattening mechanism 5, scraping mechanism 6, scraping mechanism 7, and receiving barrel 91 and discharging barrel 81 are all installed on the base 1. The sealing cover 2 is a cylindrical structure, which is sealed with the base 1. An annular sealing groove can be set on the base 1, and a sealing ring 3 is placed in the sealing groove. The sealing cover 2 can be buckled on the base 1 and can be fixedly connected by a clamp 15. The state of the sealing cover 2 connected to the base 1 by the clamp 15 is shown in Figure 1. The sealing between the base 1 and the sealing cover 2 can be achieved by the fixed connection of the sealing ring 3 and the clamp 15 to avoid air leakage in the sealing cavity.

The pipeline connected to the lower end of the discharge barrel 81 and the pipeline connected to the lower part of the receiving barrel 91 are both extended from the lower part of the base 1. The receiving assembly 9 also includes a collecting container 92, which is detachably connected to the pipe opening below the receiving barrel 91. As shown in FIG3 , the lower end of the receiving barrel 91 is connected to a connecting pipe extending downward from the base 1, and the collecting container 92 is detachably connected to the connecting pipe, so that the receiving barrel 91 receives the powder scraped off by the scraping blade 61 and enters the collecting container 92. When the powder in the collecting container 92 accumulates to a certain extent, it can be poured into the hopper 12 for re-transportation of the powder, or poured into other powder storage containers. The powder scraped off from the edge of the turntable 4 by the receiving assembly 9 can better prevent the powder from falling to the periphery of the turntable 4, thereby reducing the difficulty of cleaning and maintenance, and effectively preventing the waste of powder.

In the example shown in FIG2 , the silo 12 is supported on the base 1 by a plurality of fixing columns 14. The plurality of fixing columns 14 may be threaded columns with external threads, an annular fixing chuck 13 is provided on the outside of the silo 12, and the plurality of fixing columns 14 are arranged at intervals along the circumferential direction around the silo 12. After the fixing columns 14 pass through the fixing chuck 13, the fixing chuck 13 is fastened to the fixing columns 14 by fastening nuts.

In one embodiment, in order to allow the powder in the hopper 12 to fall onto the turntable 4, a discharge outlet 121 is provided at the lower end of the hopper 12 near the turntable. As shown in FIG4 , an adjustable baffle 122 may be provided at the discharge outlet 121. The adjustable baffle 122 is configured to be able to adjust the size of the discharge outlet 121, and the discharge outlet 121 may be closed by the adjustable baffle 122. The adjustable baffle 122 may be configured to change the size of the discharge outlet 121 by moving up and down, or may be configured to change the size of the discharge outlet 121 by moving left and right or rotating. In the example shown in FIG4 , an elongated hole extending up and down is provided on the adjustable baffle 122, and an adjusting bolt 123 is installed on the hopper 12 through the elongated hole. When the adjusting bolt 123 is loosened, the adjusting baffle 122 may be moved up and down to adjust the size of the drop outlet 121.

In one embodiment, in order to rotate the turntable 4, the powder feeder also includes a drive motor 10 for driving the turntable 4 to rotate. The drive motor 10 can be a variable frequency servo motor. The rotation speed of the turntable 4 can be adjusted by adjusting the working frequency of the servo motor, thereby adjusting the powder conveying speed.

In one embodiment, the powder feeder also includes a stirring component (not shown in the figure) located in the hopper 12, and the rotating shaft of the turntable 4 extends into the hopper 12 and is connected to the stirring component, so that the turntable 4 and the stirring component rotate synchronously. That is to say, while the drive motor 10 drives the turntable 4 to rotate, it also drives the stirring component to rotate, so that while the hopper 12 provides powder to the turntable 4, the stirring component stirs the powder in the hopper 12, which can prevent the powder from agglomerating and make the powder loose so that the powder is discharged at a uniform speed. In the example shown in Figures 1 to 4, the drive motor 10 is installed below the base 1, and the rotating shaft driven by the drive motor 10 passes through the base 1 and is connected to the turntable 4, and extends into the hopper 12 to be connected to the stirring component. An embodiment of the present application further provides a powder feeding system, as shown in FIG5 , comprising a weighing device 200, a data processing device 300 and the powder feeder 100 as described above, wherein the weighing device 200 is configured to weigh the powder feeder 100 during the feeding process of the powder feeder 100 and send the weight data to the data processing device 300, and the data processing device 300 processes the data.

Among them, data analysis software can be configured on the data processing device 300. In the process of the powder feeder 100 conveying powder, the weight of the powder feeder 100 is constantly reduced. The data processing device 300 can calculate the feeding speed of the powder feeder 100 (that is, the speed at which the weight of the powder feeder 100 decreases) in real time through the weight data of the powder feeder 100, thereby realizing online monitoring and data recording of the powder feeder 100 for powder conveying.

In the example shown in FIG. 5 , a support frame 11 is disposed below the base 1 of the powder feeder 100 , and the powder feeder 100 is supported on the weighing device 200 through the support frame 11 .

The following is a detailed description of the process of conveying powder materials using the powder feeder shown in FIGS. 1 to 4 .

1. Pour the powdered material into the silo 12, and the material discharge outlet 121 at the lower end of the silo 12 is closed. Then set the frequency of the inverter of the drive motor 10 to 20HZ (frequency modulation range 0-50HZ), and the drive motor 10 drives the turntable 4 and the stirring component to rotate, and the stirring component starts to pre-stir the powder in the silo 12 to prevent the powder from agglomerating.

2. Before the powder feeder officially feeds, calibrate the feeding speed of the powder (i.e. adjust the powder feeder to the predetermined feeding speed). Open the discharge outlet 121 of the silo 12, and the powder flows from the silo to the turntable 4. The material on the turntable 4 is flattened and scraped to the discharge barrel 81. Adjust the frequency of the flattening scraper 51, the edge scraper 61, the material scraper 71 and the drive motor 10 to adjust the feeding speed. At this time, the sealing cover 2 is not installed on the base 1, and each scraper can be easily adjusted. After entering the discharge barrel 81, the powder flows out from the lower air inlet pipe 83 by gravity. In this process, the discharge quality is recorded, the feeding speed is obtained, and it is continuously adjusted to obtain the predetermined feeding speed.

In the stage of calibrating the feeding speed, the powder feeder can be placed on the weighing device 200, the discharge quality of the powder feeder can be obtained by the weighing device 200, and the discharge quality and the discharge speed of the powder can be recorded by the data processing device 300. If the powder feeder is not placed on the weighing device 200 at this time, the amount of powder output by the powder feeder can be weighed, and the feeding speed can be obtained and adjusted according to the amount of powder output.

3. The sealing cover 2 is buckled and fixed to the base 1, and the powder feeder is placed on the weighing device 200. Gas is introduced through the upper air inlet pipe 21 and the lower air inlet pipe 83, and the drive motor 10 is started to drive the turntable 4 to rotate.

4. The data processing device 300 receives the weight data sent by the weighing device 200 during the feeding process of the powder feeder, and records and tracks the real-time feeding speed and linearity.

The powder feeder provided in this embodiment can achieve accurate feeding of powder materials such as coal powder, limestone powder, biomass particles, etc. (0.20-10.00 g/min), and its linearity is above 99%. Moreover, the powder feeder has the advantages of simple structure, convenient operation, high accuracy and small error.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features.

In the description of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims (12)

1. The powder feeder is characterized by comprising a mounting main body, a hopper, a rotary table, a flattening mechanism, a scraping mechanism, a receiving assembly and a discharging assembly, wherein the hopper, the rotary table, the flattening mechanism, the scraping mechanism and the receiving assembly are arranged on the mounting main body;

wherein the hopper is arranged to hold powder, the powder can fall onto the rotary table from the hopper, and the rotary table is arranged to be rotatable; the flattening mechanism is arranged to flatten powder on the turntable in the rotating process of the turntable, the scraping mechanism is arranged to scrape the powder at the edge of the turntable into the material receiving assembly, the scraping mechanism is arranged to scrape the flattened powder from the turntable into the material discharging assembly, and the material discharging assembly is arranged to output the powder.

2. The powder feeder of claim 1, wherein the leveling mechanism includes a leveling blade above the turntable and a first mount mounted to the mounting body, the leveling blade being adjustably connected to the first mount such that a gap between the leveling blade and the turntable and/or a position of the leveling blade on the turntable is adjustable;

the scraping mechanism comprises a scraping plate positioned above the turntable and a second mounting frame arranged on the mounting main body; wherein the edge scraping blade is adjustably connected to the second mounting frame such that a gap between the edge scraping blade and the turntable and/or a position of the edge scraping blade on the turntable is adjustable;

The scraping mechanism comprises a scraping scraper positioned above the turntable and a third mounting frame mounted on the mounting main body; wherein the scraping scraper is adjustably connected to the second mounting frame, so that a gap between the scraping scraper and the turntable and/or a position of the scraping scraper on the turntable can be adjusted.

3. The powder feeder of claim 2, wherein the first, second and third mounting frames each include a threaded rod having threads, and wherein the flattening blade, the edge scraping blade and the scraping blade are each provided with a sleeve for being sleeved on the threaded rod, the sleeve being rotatably disposed relative to the threaded rod and being movable up and down relative to the threaded rod, and wherein the threaded rod is provided with a lock nut for locking the sleeve on the threaded rod.

4. The powder feeder of claim 1, further comprising a sealing cap mounted to the mounting body and cooperating with the mounting body to form a sealing cavity; the hopper, the turntable, the flattening mechanism, the edge scraping mechanism and the scraping mechanism are all positioned in the sealing cavity;

The material collecting assembly comprises a material collecting cylinder for receiving the powder scraped by the scraping mechanism, the material discharging assembly comprises a material discharging cylinder for receiving the powder scraped by the scraping mechanism, and at least the upper end openings of the material collecting cylinder and the material discharging cylinder are positioned in the sealing cavity;

The sealed cavity is communicated with an upper air inlet pipe, the discharging barrel is connected with a discharging pipe and a lower air inlet pipe which are positioned on the outer side of the sealed cavity, and powder in the discharging barrel is sprayed out from the discharging pipe under the pressure difference effect of air pressure above and air pressure below when air is respectively introduced into the upper air inlet pipe and the lower air inlet pipe.

5. The powder feeder of claim 4, wherein the discharge pipe and the lower inlet pipe form a bifurcated structure, wherein the lower inlet pipe is located below the discharge pipe.

6. The powder feeder of claim 5, wherein the discharge pipe is inclined upward in a direction away from the bifurcation as compared to the water direction; and/or the lower air inlet pipe is inclined downwards in a direction away from the bifurcation point compared with the horizontal direction.

7. The powder feeder of claim 5, further comprising a collection container removably connected to the receiving cylinder.

8. The powder feeder of claim 5, wherein the mounting body includes a circular base, the hopper, the turntable, the flattening mechanism, the scraping mechanism, the receiving cylinder and the discharging cylinder are all mounted on the base, and the sealing cover is of a cylindrical structure and is in sealing fit with the base.

9. The powder feeder according to claim 1, wherein the hopper is provided with a discharge outlet at one end near the turntable, an adjusting baffle is provided at the discharge outlet, and the adjusting baffle is configured to close the discharge outlet and adjust the size of the discharge outlet.

10. The powder feeder of any one of claims 1-9, further comprising a drive motor for driving the turntable to rotate, the drive motor being a variable frequency servo motor.

11. A powder feeder as claimed in any one of claims 1 to 9, further comprising a stirring member located in the hopper, the shaft of the turntable extending into the hopper and being connected to the stirring member so that the turntable rotates in synchronism with the stirring member.

12. A powder feeding system comprising weighing means arranged to weigh the powder feeder during feeding thereof and to send weight data to the data processing means, and a powder feeder according to any one of claims 1-11, the data processing means processing the data.