Powder scraper

Abstract

The utility model provides a powder scraper which comprises a base plate and a powder scraping module which are mutually detachable, at least one powder plate is arranged on the base plate, and the powder scraping module comprises at least one powder scraping structure in one-to-one correspondence with the at least one powder plate and a driving module used for driving the at least one powder scraping structure to rotate; each powder scraping structure comprises at least one curved-surface-shaped scraping piece, and when the powder scraping module covers the base plate, the at least one scraping piece on each powder scraping structure stands on the top face of the corresponding powder plate. The extending track on the top surface is a gradual extending curve which extends outwards from the starting point of the center of the powder disc to the edge of the powder disc; the driving module is used for driving the scraping pieces in the at least one powder scraping structure to rotate with the center of the corresponding powder disc as the axis, so that powder higher than the top face of the powder disc is scraped out of the powder disc.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coffee measurement, and in particular to a powder scraping device. BACKGROUND

[0002] In some production or competition scenarios, it is necessary to measure the color value of coffee powder. However, there are many variables that affect the color value of coffee powder. In order to improve the color value measurement accuracy of coffee powder, multiple portions of coffee powder are usually measured for color value, and the average value of the color value measurement results of each portion of coffee powder is taken as the color value of the coffee powder. However, factors such as the distance between the coffee powder and the colorimeter and the arrangement density of the coffee powder will affect the color value measurement of the coffee powder. Therefore, in the prior art, multiple measuring discs are filled with coffee powder, and a ruler is used to compact and scrape the coffee powder in the measuring disc, and then the color value of the coffee powder in each measuring disc is measured. However, this measurement method is relatively cumbersome and is not user-friendly.

[0003] Furthermore, the ruler in the prior art is generally a straight ruler. The straight ruler can have good effect when applied to relatively fine powder, but when applied to relatively coarse powder, such as cold extraction powder in coffee powder, the straight ruler will scratch deep grooves on the surface of the powder when scraping the powder due to the relatively large particles. Since there is more than one large particle powder on the surface of the powder disc, the straight ruler will accumulate scratches when scraping the surface, resulting in unevenness of the surface and further causing color value measurement error. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a powder scraping device that can efficiently and quickly form a more flat powder surface to facilitate subsequent measurement of the powder.

[0005] In a first aspect, the present application provides a powder scraping device, comprising:

[0006] The powder scraping device comprises a bottom disc and a powder scraping module that are detachable from each other, the bottom disc is provided with at least one powder disc, the powder scraping module comprises at least one powder scraping structure corresponding to each powder disc respectively, and a driving module for driving the at least one powder scraping structure to rotate;

[0007] The powder scraping structure comprises at least one curved scraping blade, when the powder scraping module covers the bottom disc, the at least one scraping blade on each powder scraping structure stands on the top surface of the corresponding powder disc, and the extension trajectory on the top surface is a gradually extending curve extending from the center of the powder disc to the edge of the powder disc;

[0008] The driving module is used to drive the scraping blades in the at least one powder scraping structure to rotate around the center of the corresponding powder disc respectively, so as to scrape the powder higher than the top surface of the powder disc to the outside of the powder disc.

[0009] Optionally, the evolvent curve of the extension of the wiper blade on the top surface of the powder tray presents a locus formed by the superposition of a uniform linear motion of the moving point along a straight line from the center of the powder tray to the edge of the powder tray and a circular motion of the moving point around the center of the powder tray.

[0010] Optionally, the evolvent curve of the extension of the wiper blade on the top surface of the powder tray presents a locus formed by the superposition of a uniform linear motion of the moving point along a straight line from the center of the powder tray to the edge of the powder tray and a circular motion of the moving point around the center of the powder tray.

[0011] Optionally, the evolvent curve of the extension of the wiper blade on the top surface of the powder tray presents an Archimedean spiral with the center of the powder tray as the starting point.

[0012] Optionally, the powder scraping structure includes two or three wiper blades extending from the center to the edge of the corresponding powder tray, and the two or three wiper blades are distributed in rotational symmetry.

[0013] Optionally, the bottom tray is provided with at least a first powder tray and a second powder tray, and the powder scraping module includes a first support and a second support respectively above the first powder tray and the second powder tray,

[0014] The at least one powder scraping structure includes a first powder scraping structure and a second powder scraping structure respectively fixed on the side of the first support and the second support facing the bottom tray;

[0015] The driving module includes a first driven gear and a second driven gear respectively fixed on the side of the first support and the second support away from the bottom tray, a driving gear cooperating with the first driven gear and the second driven gear, and a driving member for driving the driving gear to rotate.

[0016] Optionally, the first support is annular, and the first powder scraping structure includes at least one wiper blade extending from the center of the first support to the first support;

[0017] The powder scraping module further includes an upper cover covering the first driven gear and the second driven gear and fixed with the first support and the second support, and the upper cover is provided with a powder inlet through hole corresponding to the center through hole of the first support;

[0018] When the powder scraping module is covered above the bottom tray, the powder poured into the powder inlet through hole of the upper cover can fall into the corresponding powder tray through the center through hole of the first support.

[0019] Optionally, the upper cover is further provided with a handle on the side opposite to the first support and the second support, an inner cavity of the handle is used for accommodating the driving member, and a control button is arranged on the surface of the handle and used for controlling the start and stop of the driving member to control the at least one powder scraping structure to respectively scrape the powder in the corresponding powder disc.

[0020] Optionally, the bottom disc comprises a base and a cover sheet which are detachable from each other, the at least one powder disc is arranged on the base, and the periphery of each powder disc is protruded on the base;

[0021] The cover sheet is provided with through holes corresponding to the at least one powder disc one by one, each through hole is sleeved outside the protruded periphery of the corresponding powder disc, so that the top surface of the powder disc and the side of the cover sheet facing the powder scraping module are flush.

[0022] In the embodiment of the application, the powder in the powder disc which is higher than the top surface of the powder disc is scraped flat by rotating the powder scraping structure driven by the driving module, so that the automatic powder scraping is realized and the user is facilitated to operate; the powder scraping structure comprises at least one curved scraping sheet, and the driving module is used for driving the at least one scraping sheet to rotate around the center of the corresponding powder disc; compared with the straight ruler scraper, the scraping sheet has a longer powder scraping path, can push the large-particle powder to be flush with the top surface of the powder disc or out of the powder disc in a shorter time, and can continuously fill the excess powder into the grooves caused by scraping the large-particle powder in the process of rotation, so that the surface of the powder disc is more flat; in addition, each scraping sheet stands on the top surface of the corresponding powder disc, and the extension trajectory on the top surface is a gradually extending curve extending from the starting point of the center of the powder disc to the edge of the powder disc, so that the powder which is higher than the powder disc can be more quickly dispersed from the center to the periphery along the gradually opening trajectory of the curve under the pushing of the gradually extending curve, and when the powder contacts the wall of the powder disc, the powder will move out of the powder disc along the trajectory; the powder scraper of the application can efficiently and quickly form a flat powder disc surface. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the appearance structure diagram of one embodiment of the powder scraper of the application;

[0024] Figure 2 is Figure 1 the explosion structure diagram of the powder scraper shown in the figure;

[0025] Figure 3 and Figure 4 are respectively the explosion structure diagrams of the powder scraping module in the powder scraper of one embodiment of the application in two different views;

[0026] Figure 5 isFigure 3 a front view of the powder scraping structure shown in FIG. 1;

[0027] Figure 6 is an exploded structural schematic diagram of a powder scraper according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] Embodiments of the present application will be described in more detail with reference to the drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0029] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the description of the application and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0030] It should be understood that although the terms "first", "second", "third", etc. can be employed in this application to describe various information, such information should not be limited by these terms. These terms are only used to distinguish one piece of information from another piece of information. For example, a first information can also be referred to as a second information, and similarly, a second information can also be referred to as a first information, without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0031] As shown in FIG. 1, Figures 1 to 2 As shown in FIG. 1, Figure 1 is an appearance structural schematic diagram of a powder scraper according to an embodiment of the present application, Figure 2 is Figure 1 is an exploded structural schematic diagram of the powder scraper shown in FIG. 1. The powder scraper 1 comprises a bottom plate 11 and a powder scraping module 12 which are detachable from each other. The bottom plate 11 is provided with at least one powder tray 111. The powder scraping module comprises at least one powder scraping structure (not shown in the figure) corresponding to the at least one powder tray 111 respectively, and a driving module (not shown in the figure) for driving the at least one powder scraping structure to rotate. In Figure 2 , it is exemplified that the bottom plate 11 is provided with three powder trays 111, and the powder scraping module comprises three powder scraping structures. Alternatively, the three powder trays 111 can be arranged in a row, or as shown in Figure 2The plurality of powder trays are arranged in an equilateral triangle. The plurality of powder trays can facilitate the user to sequentially measure the attribute parameters of the powders in the plurality of powder trays, for example, to measure the color values of the coffee powders in the plurality of powder trays, and to average the detection results of the plurality of powder trays to obtain the final detection result.

[0032] Figure 3 and Figure 4 are respectively schematic diagrams of the explosion structure of the powder scraping module in the powder scraper of an embodiment of the present application in two different perspectives. As shown in Figure 3 , the powder scraping structure 121 in the powder scraping module 12 comprises at least one curved scraping sheet 1211. As shown in Figure 5 , the powder scraping structure 121 in the powder scraping module 12 comprises at least one curved scraping sheet 1211. As shown in Figure 5 , the powder scraping structure 121 in the powder scraping module 12 comprises at least one curved scraping sheet 1211. As shown in Figure 3 , the powder scraping structure 121 in the powder scraping module 12 comprises at least one curved scraping sheet 1211. As shown in

[0033] In some examples, the extending curve of the scraping sheet on the top surface of the powder tray is a trajectory formed by the superposition of the straight line motion along the straight line from the center of the powder tray to the edge of the powder tray and the circular motion around the center of the powder tray, with the center of the powder tray as the starting point. The straight line motion along the straight line from the center of the powder tray to the edge of the powder tray can be uniform linear motion, or equal acceleration linear motion, or variable acceleration linear motion, which is not limited herein. The circular motion around the center of the powder tray can be equal angular velocity circular motion, or variable angular velocity circular motion with fixed acceleration, or variable angular velocity circular motion with variable acceleration, which is not limited herein. For example, the extending curve of the scraping sheet on the top surface of the powder tray can be fan-shaped, arc-shaped or other curved shapes. For another example, as shown in Figure 5 , the extending curve of the scraping sheet 1211 on the top surface of the powder tray is an Archimedes spiral with the center of the powder tray as the starting point.

[0034] In the embodiments of the present application, the powder on the powder disc is scraped flat by driving the scraping structure to rotate, so that the powder can be scraped automatically, and the user can operate conveniently. The scraping structure includes at least one scraping sheet in a curved shape, and the driving module is used to drive the at least one scraping sheet to rotate around the center of the corresponding powder disc. Compared with a ruler-shaped scraper, the scraping sheet has a longer powder scraping path, and can push the large-particle powder to be flush with the top surface of the powder disc or out of the powder disc in a shorter time. In addition, the powder on the powder disc can be filled into the grooves caused by scraping the large-particle powder in the process of rotation, so that the surface of the powder disc is more flat. In addition, each scraping sheet stands on the top surface of the corresponding powder disc, and the extension trajectory on the top surface is a gradually extending curve extending from the center of the powder disc to the edge of the powder disc. The powder on the powder disc can be dispersed from the center to the periphery along the gradually opening trajectory of the curve under the pushing of the gradually extending curve. When the powder contacts the wall of the powder disc, the powder will move out of the powder disc along the trajectory.

[0035] Optionally, each scraping structure 121 includes two or three scraping sheets 1211 extending from the center to the periphery of the corresponding powder disc, and the two or three scraping sheets 1211 are distributed in rotational symmetry. The use of two or three scraping sheets can improve the scraping efficiency to quickly scrape the powder on the powder disc flat, and the structure processing cost is also lower. Alternatively, in some examples, the two or three scraping sheets can also be in different curved shapes, which is not limited here.

[0036] Optionally, as shown in Figures 2 to 5 The bottom disc 11 is provided with at least a first powder disc 111 and a second powder disc 112. The scraping module 12 includes a first support 123 and a second support 124 located above the first powder disc 111 and the second powder disc 112 respectively. The at least one scraping structure includes a first scraping structure 121 and a second scraping structure 122 fixed on one side of the first support 123 and the second support 124 respectively, which faces the bottom disc 11. The driving module includes a first driven gear 125 and a second driven gear 126 fixed on one side of the first support 123 and the second support 124 respectively, which faces away from the bottom disc 11, a driving gear 127 matched with the first driven gear 125 and the second driven gear 126, and a driving member (not shown in the figure) for driving the driving gear 127 to rotate.

[0037] Alternatively, in some examples, the first driven gear and the second driven gear can also not be simultaneously driven to rotate by the driving gear, but the driving gear and the first driven gear can be matched, and the second driven gear and the first driven gear can be matched, so that after the driving gear drives the first driven gear to rotate, the first driven gear drives the second driven gear to rotate.

[0038] In the example in which the base disc is provided with at least three powder discs, optionally, the at least three powder discs are arranged around the center, so that the at least three driven gears corresponding to the at least three powder discs are arranged around the driving gear 127 and matched with the driving gear 127, so that the driving gear drives the at least three driven gears corresponding to the at least three powder discs to rotate simultaneously. Alternatively, optionally, the at least three powder discs and the at least three driven gears corresponding to the at least three powder discs are arranged in a row respectively, and any two adjacent driven gears are matched two by two, and the driving gear drives one driven gear located at the edge of the row to rotate, and then drives other driven gears to rotate in turn.

[0039] Optionally, as shown in Figures 3 to 5 the first support 123 is annular, and the first powder scraping structure 121 includes at least one scraping sheet 1211 extending from the center of the annular first support 123 to the first support. The powder scraping module further includes an upper cover 128 covering the first driven gear 125 and the second driven gear 126 and fixed with the first support 123 and the second support 124, and the upper cover 128 is provided with a powder inlet through hole 1281 corresponding to the center through hole of the first support 123.

[0040] When the powder scraping module 12 covers the base disc 11, even during the process in which the driving module drives the powder scraping structures to rotate to scrape powder, the user can add powder to the powder inlet through hole 1281 of the upper cover 128 in real time. The powder heated from the powder inlet through hole of the upper cover can fall into the corresponding powder disc through the center through hole of the first support 123. In the example in which the base disc 11 is provided with at least two powder discs, optionally, the upper cover 128 is provided with at least two powder inlet through holes corresponding to the at least two powder discs one by one, and each powder inlet through hole is used to add powder to each corresponding powder disc.

[0041] Optionally, the upper cover 128 is further provided with a handle 1282 on the side away from the first support and the second support, the inner cavity of the handle 1282 is used to accommodate the driving member, and the surface of the handle 1282 is provided with a control button (not shown in the figure) for controlling the start and stop of the driving member, so as to control the at least one powder scraping structure to scrape the powder in the corresponding powder disc.

[0042] In some examples, the base 11 can include a base and a cover that are detachable from each other. Figure 6 is an exploded structural schematic diagram of the powder scraper according to an embodiment of the present application. As shown, the base 11 includes a base 13 and a cover 14 stacked one on top of the other, wherein the at least one powder tray is arranged on the base 13, and the periphery of each of the powder trays (e.g. the periphery 1111 of the coffee tray 111) is raised on the base 13. The cover 14 is provided with through holes 141 corresponding to the at least one powder tray one by one, each of the through holes 141 is sleeved outside the raised periphery of the corresponding powder tray, so that the top surface of the powder tray and the side of the cover facing the powder scraping module are flush. Figure 6

[0043] After the powder scraping structure scrapes the powder that is higher than the top surface of the powder tray out of the powder tray, the powder will accumulate on the outer edge of the powder tray, affecting the user's measurement of the powder in the powder tray. By arranging the cover in the base 11, the powder that is higher than the top surface of the powder tray can be scraped onto the surface of the cover. Since the base and the cover are detachably arranged, the cover can be removed from the base, and the periphery of each of the powder trays on the base remains clean and tidy, facilitating the user's measurement of the scraped powder in each of the powder trays.

[0044] The above has described the embodiments of the present application, and the above description is exemplary and is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical application, or improvement to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.​

Claims

1. A doctor blade, characterized in that, The device comprises a base plate and a powder scraping module, the base plate is provided with at least one powder plate, the powder scraping module comprises at least one powder scraping structure corresponding to the at least one powder plate respectively and a driving module for driving the at least one powder scraping structure to rotate; The powder scraping structure comprises at least one curved scraping sheet, when the powder scraping module covers the base plate, the at least one scraping sheet on each powder scraping structure stands on the top surface of the corresponding powder plate, and the extending track on the top surface is a gradually extending curve extending from the center of the powder plate to the edge of the powder plate; The driving module is used for driving the scraping sheets in the at least one powder scraping structure to rotate around the center of the corresponding powder plate respectively, so as to scrape the powder higher than the top surface of the powder plate to the outside of the powder plate.

2. The doctor blade according to claim 1, wherein The gradually extending curve of the scraping sheet on the top surface of the powder plate presents a moving point starting from the center of the powder plate, and the track is formed by the superposition of the straight line motion along the straight line from the center to the edge of the powder plate and the circular motion around the center of the powder plate.

3. The doctor blade according to claim 2, wherein The gradually extending curve of the scraping sheet on the top surface of the powder plate presents the moving point starting from the center of the powder plate, and the track is formed by the superposition of the uniform straight line motion along the straight line from the center to the edge of the powder plate and the circular motion around the center of the powder plate with the same angular velocity.

4. The doctor according to claim 3, wherein The gradually extending curve of the scraping sheet on the top surface of the powder plate presents an Archimedes spiral starting from the center of the powder plate.

5. The doctor according to claim 2, wherein The powder scraping structure comprises two or three scraping sheets extending from the center to the edge of the corresponding powder plate, and the two or three scraping sheets are distributed in rotational symmetry.

6. The doctor blade according to any one of claims 1 to 5, characterized in that The base plate is provided with at least a first powder plate and a second powder plate, the powder scraping module comprises a first support and a second support located above the first powder plate and the second powder plate respectively, The at least one powder scraping structure comprises a first powder scraping structure and a second powder scraping structure fixed on the side of the first support and the second support facing the base plate respectively; The driving module comprises a first driven gear and a second driven gear fixed on the side of the first support and the second support away from the base plate respectively, a driving gear matched with the first driven gear and the second driven gear, and a driving member for driving the driving gear to rotate.

7. The doctor according to claim 6, wherein The first support is annular, and the first powder scraping structure comprises at least one scraping sheet extending from the center of the first support to the first support; The powder scraping module further comprises an upper cover covering the first driven gear and the second driven gear and fixed with the first support and the second support, and the upper cover is provided with a powder inlet hole corresponding to the center through hole of the first support; When the powder scraping module covers the base plate, the powder poured into the powder inlet hole of the upper cover can fall into the corresponding powder plate through the center through hole of the first support.

8. The doctor according to claim 7, wherein The upper cover is further provided with a handle on the side away from the first support and the second support, an inner cavity of the handle is used for accommodating the driving member, and a control button is arranged on the surface of the handle and used for controlling the start and stop of the driving member to control the at least one powder scraping structure to respectively scrape the powder in the corresponding powder disc.

9. The doctor blade according to any one of claims 1 to 5, wherein The bottom disc comprises a base and a cover sheet which are detachable from each other, the at least one powder disc is arranged on the base, and the periphery of each powder disc is protruded on the base; The cover sheet is provided with through holes corresponding to the at least one powder disc respectively, each through hole is sleeved outside the protruded periphery of the corresponding powder disc, so that the top surface of the powder disc and the side of the cover sheet facing the powder scraping module are flush.

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