Powder barrel and powder distribution equipment

Abstract

The utility model discloses a powder barrel and powder distribution equipment, the powder barrel comprises a barrel body, a stirring rod, a funnel and a scraping strip, and the barrel body is provided with a containing cavity used for containing powder and a powder outlet communicated with the containing cavity; the stirring rod is suitable for rotating around the axis direction of the stirring rod, at least part of the stirring rod is arranged in the containing cavity and used for adjusting the opening degree of the powder outlet; one end of the funnel is connected with the barrel body, the other end of the funnel is provided with a powder leakage port, the funnel encloses a containing cavity, and the powder outlet and the powder leakage port are both communicated with the containing cavity; the scraping strip is at least partially arranged in the containing cavity, connected with the stirring rod and suitable for rotating around the axis direction of the stirring rod along with the stirring rod. By arranging the funnel, powder scattered all around when powder is discharged from the powder outlet of the barrel body can be stored and discharged from the powder leakage opening in a centralized mode, the powder distribution barrel can be compatible with a container with the small opening size, the scraping strip can scrape off the powder on the inner wall of the funnel, the powder is prevented from remaining in the funnel, powder loss is avoided, and the powder distribution precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a powder barrel and powder dispensing equipment. Background Art

[0002] In the process of new drug development or chemical material development, it is often necessary to mix solid powders and liquids or multiple solid powders to achieve a predetermined reaction and obtain the drug or material product expected by the experimental design. The addition of solid powder is a key link, and the addition accuracy of solid powder will directly affect the quality of the experimental product.

[0003] A powder dispensing device is a device for dispensing powder into corresponding containers as needed, which usually stores powder and performs powder dispensing operations through a powder barrel. The current powder barrel will cause powder to scatter around when dispensing powder. For example, Chinese utility model patent CN218724622U discloses a micro powder hopper, which has a cutout at the lower end of the output shaft. When the output shaft is driven to rotate and move up and down, the cutout can be connected and closed with the powder output hole at the lower end of the shell; because the cutout is a curved surface opened around the cylindrical output shaft, when the output shaft rotates, the powder falling from the gap between the cutout and the output hole will drift around due to the inertia of rotation. Therefore, for containers with smaller opening sizes, powder may scatter outside the container, causing powder loss, and the powder entering the container does not match the powder quantitatively discharged from the powder barrel, resulting in insufficient accuracy of powder distribution. Utility Model Content

[0004] The utility model aims to provide a powder barrel and a powder dispensing device to solve the problems that powder is scattered outside the container, causing powder loss, the powder entering the container does not match the powder quantitatively discharged from the powder barrel, and the powder dispensing accuracy is insufficient.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a powder barrel, comprising:

[0007] The barrel body has a containing cavity for containing powder and a powder outlet communicated with the containing cavity;

[0008] A stirring rod, adapted to rotate around its own axis, wherein at least a portion of the stirring rod is disposed in the accommodating cavity and is used to adjust the opening of the powder outlet;

[0009] A funnel, one end of which is connected to the barrel body, and the other end of which is provided with a powder leakage port, the funnel encloses a receiving cavity, and the powder outlet and the powder leakage port are both connected to the receiving cavity;

[0010] A scraper bar is at least partially disposed in the receiving cavity, the scraper bar is connected to the stirring rod, and is adapted to follow the stirring rod and rotate around the axis direction of the stirring rod.

[0011] In one embodiment, the radial dimension of the funnel gradually decreases from one end connected to the barrel body to one end of the powder leakage port; the diameter of the powder leakage port is less than or equal to the diameter of the powder outlet.

[0012] In one embodiment, one end of the barrel body close to the funnel is a conical structure, the funnel is detachably connected to the barrel body, and at least a portion of the conical structure is located in the funnel.

[0013] In one embodiment, the scraper strip also extends out of the funnel from the powder leakage port.

[0014] In one embodiment, the scraper strip includes a connecting section and a powder scraping section, the connecting section is connected to the stirring rod, the powder scraping section is connected to the connecting section, and the powder scraping section is at least partially arranged adjacent to or in contact with the inner wall of the receiving chamber, and is suitable for scraping powder off the inner wall of the receiving chamber.

[0015] In one embodiment, the scraper strip further includes a fixed section, which is connected to the connecting section and / or the powder scraping section, and the fixed section is movably connected to the outer surface of the barrel body near the powder outlet or the fixed section is movably connected to the inner surface of the funnel near one end of the barrel body.

[0016] In one embodiment, the powder barrel further includes a limiting structure, which is disposed on the outer surface of the barrel body near the powder outlet, and the fixing section is cooperatively connected with the limiting structure;

[0017] The limiting structure includes a retaining spring and a washer, the retaining spring is clamped on the outer surface of the barrel body close to the powder outlet, the fixed section is wrapped around the barrel body and is located on the side of the retaining spring facing away from the powder outlet; the washer is sleeved on the barrel body and is located between the retaining spring and the fixed section.

[0018] In one embodiment, the powder scraping section is arranged away from the stirring rod, and the powder scraping section and the inner wall of the receiving cavity have the same inclination angle relative to the axis of the stirring rod.

[0019] In one embodiment, the powder scraping section extends in a spiral shape, and the center line of the spiral is the axis of the stirring rod.

[0020] In one embodiment, the stirring rod extends from the powder outlet out of the barrel body and into the receiving cavity; the scraper is connected to the portion of the stirring rod extending out of the barrel body.

[0021] In one embodiment, the stirring rod is also suitable for moving along its own axial direction; a groove is provided at one end of the stirring rod extending out of the powder outlet along the axial direction of the stirring rod, and an end of the connecting section away from the powder scraping section extends into the groove, and an inner wall of the groove in the axial direction of the stirring rod is always spaced apart from the connecting section.

[0022] In one embodiment, one end of the fixed section is connected to the connecting section, and the other end of the fixed section is connected to the scraping section; the connecting section and the scraping section are arranged adjacent to each other, and the scraping strip further includes a connecting member, which connects and fixes the connecting section and the scraping section.

[0023] In one embodiment, the scraper strip further includes a guide section, which is connected to one end of the powder scraping section away from the connecting section, the guide section is located at the powder leakage port and at least partially extends from the powder leakage port to the funnel, and the portion of the guide section extending from the funnel extends toward the axial direction of the stirring rod.

[0024] In one embodiment, the powder barrel further includes a conduit, the conduit is connected to the funnel, a central hole of the conduit is communicated with the powder leakage port, and the conduit extends toward the axial direction of the stirring rod.

[0025] In one embodiment, a connecting port is provided at the connection between the barrel body and the funnel, and the connecting port connects the receiving cavity with the outside.

[0026] In one embodiment, the stirring rod includes a blocking section and a powder outlet section, the blocking section is connected to one end of the powder outlet section facing the powder leakage port, the diameter of the blocking section is equal to the caliber of the powder outlet, and at least part of the radial dimension of the powder outlet section is smaller than the caliber of the powder outlet.

[0027] In one embodiment, the outer peripheral surface of the powder outlet section includes a powder outlet surface, at least a portion of the powder outlet surface has an angle with the axis of the stirring rod, and an end of the powder outlet surface away from the blocking section is closer to the center line of the stirring rod than an end close to the blocking section.

[0028] In one embodiment, the stirring rod further includes a main body section and an extrusion section, the main body section is connected to one end of the powder outlet section away from the blocking section, the extrusion section is connected to the end of the main body section close to the powder outlet section or the extrusion section is connected to the powder outlet section, the extrusion section protrudes from the outer surface of the main body section, the extrusion section forms an extrusion surface, the extrusion surface faces the powder outlet section, and the extrusion surface has an angle with the axial and circumferential directions of the stirring rod.

[0029] In one embodiment, the extrusion surface further extends to the powder outlet surface of the powder outlet section and is smoothly connected to the powder outlet surface, and the extrusion surface and the powder outlet surface form an obtuse angle.

[0030] In one embodiment, there are multiple extrusion sections, and the multiple extrusion sections are spaced apart along the axial direction of the stirring rod; from the main section to the blocking section, the radial dimensions of the multiple extrusion sections protruding from the main section gradually decrease, and the radial dimension of the extrusion section closest to the blocking section protruding from the main section is not greater than the maximum radial dimension of the powder outlet section protruding from the main section.

[0031] In one embodiment, the barrel body further includes a cover, and the cover and the powder outlet are respectively located at two ends of the barrel body in the axial direction of the stirring rod; the powder barrel further includes a cover, an elastic structure and a docking joint, the cover is arranged at the cover, the elastic structure is connected to the cover and the stirring rod, the stirring rod is movably connected to the cover, and the docking joint is connected to an end of the stirring rod facing away from the powder outlet;

[0032] The cover body comprises a cover plate and an extension structure, wherein the cover plate is covered on the cover opening, the extension structure is connected to the cover plate and encloses a telescopic chamber, and the elastic structure is accommodated in the telescopic chamber;

[0033] The extension structure protrudes from a side of the cover plate facing the powder outlet, or the extension structure protrudes from a side of the cover plate facing away from the powder outlet.

[0034] In one embodiment, the powder barrel further includes a locking mechanism, and the locking mechanism is disposed on the barrel body and / or the cover body so that the barrel body and the cover body are detachably connected.

[0035] In a second aspect, the utility model provides a powder dispensing device, comprising a driving device and a powder barrel according to any one of the various embodiments of the first aspect, wherein the driving device is used to drive a stirring rod of the powder barrel to rotate.

[0036] By setting up the funnel, the powder scattered around when discharging powder from the powder outlet of the barrel can be collected and discharged from the powder outlet, and it is compatible with containers with smaller opening sizes. In addition, the scraper bar can scrape the powder on the inner wall of the funnel to avoid powder residue in the funnel, so that all the powder output from the barrel can enter the container through the funnel to avoid powder loss. The powder entering the container matches the powder quantitatively discharged from the powder barrel, and the powder distribution accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 is a cross-sectional view and a partial enlarged view of the powder barrel of the first embodiment;

[0039] Figure 2 is a partial cross-sectional view of the powder barrel of the first embodiment from another perspective;

[0040] Figure 3 is a perspective view of the powder barrel of the first embodiment, wherein the funnel is omitted;

[0041] Figure 4 is a perspective view of a scraper strip according to a first embodiment;

[0042] Figure 5 is a front view of the stirring rod of the first embodiment;

[0043] Figure 6 is a perspective view of a docking joint of the first embodiment;

[0044] Figure 7 is a perspective view of a cover body of the first embodiment;

[0045] Figure 8 is a cross-sectional view of a powder barrel of the second embodiment;

[0046] Fig. 9 is a front view of the powder barrel of the second embodiment, in which the funnel is omitted;

[0047] Fig.10 yes Fig. 9 A partial enlarged view of the middle A;

[0048] Fig.11 is a perspective view of a stirring rod according to the second embodiment.

[0049] Description of reference numerals:

[0050] 100-powder barrel;

[0051] 10-barrel body, 11-accommodating chamber, 12-powder outlet, 13-cover, 14-conical structure, 15-columnar structure, 16-limiting surface, 17-installation groove, 18-communication port;

[0052] 20-stirring rod, 21-card slot, 22-blocking section, 23-powder outlet section, 231-powder outlet surface, 24-main section, 25-extrusion section, 251-extrusion surface, 26-limiting boss, 27-stirring blade;

[0053] 30-funnel, 31-receiving chamber, 32-powder leakage port, 35-duct, 351-center hole;

[0054] 40-scraping strip, 41-connecting section, 42-powder scraping section, 43-fixing section, 44-connecting piece, 45-guiding section;

[0055] 51-circlip, 52-washer;

[0056] 60-cover body, 61-cover plate, 611-powder adding port, 612-first mounting hole, 62-extension structure, 621-telescopic chamber, 622-second mounting hole;

[0057] 70-elastic structure, 71-spring, 72-slider;

[0058] 80-joint, 81-matching groove;

[0059] 90-Locking mechanism. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0061] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0062] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0063] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0064] Please refer to Figure 1 An embodiment of the utility model provides a powder dispensing device, including a driving device (not shown) and a powder barrel 100 in any embodiment of the utility model, wherein the driving device is used to drive the stirring rod 20 of the powder barrel 100 to rotate.

[0065] The specific structure of the driving device is not limited, and it is used to drive the stirring rod 20 to rotate, so as to achieve stirring and discharging of the powder in the powder barrel 100.

[0066] The powder dispensing device of the embodiment of the utility model adopts the powder barrel 100 in the embodiment of the utility model. The powder barrel 100 is provided with a funnel 30, which can collect the powder scattered around when discharging from the powder outlet 12 of the barrel body 10 and concentrate it to leak out from the powder leakage port 32. It is compatible with containers with smaller opening sizes to prevent powder from scattering outside the container and causing powder loss. The powder entering the container matches the powder quantitatively discharged from the powder barrel 100, and the powder dispensing accuracy is high.

[0067] The powder barrel 100 of the embodiment of the utility model is described in detail below.

[0068] First embodiment

[0069] Please refer to Figures 1 to 4 The embodiment of the utility model provides a powder barrel 100, including a barrel body 10, a stirring rod 20, a funnel 30 and a scraper 40.

[0070] The barrel body 10 has a receiving chamber 11 for containing powder and a powder outlet 12 connected to the receiving chamber 11. The stirring rod 20 is suitable for rotating around its own axis direction. The stirring rod 20 is at least partially placed in the receiving chamber 11, and is used to adjust the opening of the powder outlet 12. One end of the funnel 30 is connected to the barrel body 10, and the other end is provided with a powder outlet 32. The funnel 30 encloses a receiving chamber 31, and the powder outlet 12 and the powder outlet 32 ​​are both connected to the receiving chamber 31. The scraper 40 is at least partially placed in the receiving chamber 31, and the scraper 40 is connected to the stirring rod 20, and is suitable for following the stirring rod 20 to rotate around the axis direction of the stirring rod 20.

[0071] The shape and structure of the barrel body 10 are not limited, and the accommodating chamber 11 is used to contain powder, which may be solid powder, granules, etc. When the powder barrel 100 is in use, the powder outlet 12 is located at the bottom of the barrel body 10, that is, the powder outlet 12 is located at the position of the barrel body 10 closest to the center of the earth, so that the powder contained in the accommodating chamber 11 will naturally flow toward the powder outlet 12 and gather under the action of gravity, which can facilitate the powder discharge operation.

[0072] The stirring rod 20 is roughly in the shape of a column extending in a straight line. When the powder barrel 100 is in use, the stirring rod 20 extends roughly in the vertical direction. The stirring rod 20 is at least partially accommodated in the accommodating chamber 11, and can rotate around its own axis, and the opening of the powder outlet 12 can be adjusted. The opening of the powder outlet 12 can be 0-100%. When the opening is 0, the powder outlet 12 is completely blocked by the stirring rod 20, and the powder outlet 12 cannot discharge powder at this time. When the opening is 100%, the powder outlet 12 is fully open, that is, the powder outlet 12 is completely unobstructed by the stirring rod 20, and the powder discharge speed is the fastest at this time. Optionally, the opening of the powder outlet 12 can be 0-60%, that is, when the opening of the powder outlet 12 is 60%, it cannot be fully opened when the opening is maximum, so as to control the maximum speed of powder discharge not to be too fast. Optionally, the stirring rod 20 can be inserted into the powder outlet 12 to facilitate the installation arrangement of the stirring rod 20 and the powder barrel 100. Through the special shape and structure of the stirring rod 20, the opening of the powder outlet 12 can be adjusted when the stirring rod 20 rotates. Since the powder outlet 12 must at least accommodate part of the stirring rod 20, the opening of the powder outlet 12 is 0-60%, which can meet the need to set the stirring rod 20 at the powder outlet 12. The specific value of the opening of the powder outlet 12 can be 0, 10%, 20%, 30%, 40%, 50%, 60%, etc., without limitation.

[0073] It is understandable that the powder barrel 100 can achieve the functions of adjusting the opening of the powder outlet 12 and stirring the powder by rotating the stirring rod 20, or it can achieve the function of adjusting the opening of the powder outlet 12 by moving the stirring rod 20 along the axial direction (linear motion) and achieving the function of stirring the powder by rotating the stirring rod 20. This embodiment does not limit this.

[0074] The funnel 30 is arranged on the outside of the barrel body 10, and the funnel 30 has a larger end and a smaller end, and the larger end is connected to the barrel body 10. When the powder barrel 100 is in use, the larger end and the smaller end are roughly opposite in the vertical direction, and the smaller end is closer to the center of the earth. After the larger end of the funnel 30 is connected to the barrel body 10, a sealing structure can be formed between the barrel body 10, and the smaller end has a powder leakage port 32. In this way, the powder outlet 12 of the barrel body 10 is connected to the receiving chamber 31, and only the powder leakage port 32 of the receiving chamber 31 is connected to the outside world. When the powder outlet 12 is discharged, the powder scattered around falls on the inner wall of the funnel 30, and naturally flows toward the powder leakage port 32 along the inner wall of the funnel 30 under the action of gravity and falls into the container from the powder leakage port 32.

[0075] The scraper bar 40 is at least partially received in the receiving chamber 31. When the stirring rod 20 rotates, the scraper bar 40 can be driven to rotate, and the scraper bar 40 can scrape the powder remaining on the inner wall of the funnel 30 and discharge it from the powder leakage port 32. The specific shape and structure of the scraper bar 40 are not limited.

[0076] In the embodiment of the utility model, by providing a funnel 30, the powder scattered around when the powder is discharged from the powder outlet 12 of the barrel body 10 can be collected and discharged from the powder outlet 32, and it is compatible with containers with smaller opening sizes. The scraper 40 can scrape the powder on the inner wall of the funnel 30 to avoid the powder remaining in the funnel 30. The powder output from the barrel body 10 can all enter the container through the funnel 30 to avoid the loss of powder. The powder entering the container matches the powder quantitatively discharged from the powder barrel 100, and the powder distribution accuracy is high, which helps to improve the accuracy of subsequent experimental results.

[0077] Optional, reference Figure 1 and Figure 2 The radial dimension of the funnel 30 gradually decreases from the end connected to the barrel body 10 to the end of the powder leakage port 32. The diameter of the powder leakage port 32 is smaller than or equal to the diameter of the powder outlet 12.

[0078] The funnel 30 may be a rotationally symmetrical structure, and its radial dimension refers to the radial dimension of the stirring rod 20. The powder leakage port 32 and the powder outlet 12 may also be rotationally symmetrical, and their diameter also refers to the radial dimension of the stirring rod 20, without limitation.

[0079] Exemplarily, the funnel 30 may be roughly conical in structure, and the cross-section of the barrel body 10 at one end close to the funnel 30 may also be roughly circular. The radial dimension of the funnel 30 is the diameter. The radial dimension of the funnel 30 is gradually reduced from the end connected to the barrel body 10 to the end of the powder leakage port 32, so that the inner wall of the funnel 30 can form an inclined surface, which facilitates the powder to slide along the inner wall of the funnel 30 to the powder leakage port 32 under the action of gravity.

[0080] Exemplarily, the shape of the powder outlet 12 and the powder leakage port 32 may be circular, and the caliber thereof refers to the diameter. Since the powder at the powder outlet 12 will be dispersed around due to the action of the stirring rod 20, and the powder at the powder leakage port 32 will not be dispersed around due to the storage action of the funnel 30, compared with the method of directly discharging powder to the container through the powder outlet 12 without the funnel 30, the setting of the funnel 30 and the discharge of powder from the powder leakage port 32 can prevent the powder from scattering outside the container, so that the powder leakage port 32 can be adapted to the container with a smaller opening size, and the powder leakage port 32 can discharge powder into the container, and can still achieve high-precision powder dispensing operation under the special condition that the opening size of the container is small, thereby improving the application scope of the powder barrel 100. It is understandable that the powder outlet 12 and the powder leakage port 32 can also be other shapes, such as the shape of the powder leakage port 32 is circular, and the shape of the powder outlet 12 is semicircular, elliptical, fan-shaped, polygonal, etc., which is not limited here.

[0081] Optionally, the center lines of the stirring rod 20, the powder outlet 12, the funnel 30 and the powder outlet 32 ​​are all collinear. This arrangement can minimize the risk of powder sticking to the wall and speed up the falling speed of the powder.

[0082] Optional, reference Figure 1 and Figure 2 One end of the barrel body 10 close to the funnel 30 is a conical structure 14 , the funnel 30 is detachably connected to the barrel body 10 , and at least a portion of the conical structure 14 is located in the funnel 30 .

[0083] The conical structure 14 of the barrel body 10 extends upward from the powder outlet 12 (i.e., in the direction away from the powder leakage port 32), and has a shape in which the diameter at the powder outlet 12 is the smallest and gradually increases upward. The barrel body 10 may also include a columnar structure 15, and the conical structure 14 is smoothly connected to the columnar structure 15. When the funnel 30 is connected to the barrel body 10, the funnel 30 may be connected to the conical structure 14, or to the columnar structure 15, or to the junction of the conical structure 14 and the columnar structure 15, without limitation. The conical structure 14 and the columnar structure 15 may be rotationally symmetrical structures. Furthermore, the conical structure 14 may be conical, and the columnar structure 15 may be cylindrical, without limitation.

[0084] The detachable connection between the funnel 30 and the barrel body 10 can be screwed, clamped, sleeved, bonded, magnetically attracted, etc., without limitation. At least part of the conical structure 14 of the barrel body 10 is located in the funnel 30, so that the powder outlet 12 is located between the connection between the funnel 30 and the barrel body 10 and the powder leakage port 32, so that when the powder outlet 12 discharges powder, the powder will only be in the receiving cavity 31 of the funnel 30 and will not leak out from the connection between the funnel 30 and the barrel body 10, thereby improving the sealing performance.

[0085] Optional, reference Figure 2 , the scraper bar 40 also extends out of the funnel 30 from the powder leakage port 32. The scraper bar 40 extends out of the powder leakage port 32, and the powder can be gathered around the scraper bar 40 and discharged, which can play a role in guiding the discharge direction of the powder. For containers with smaller opening sizes, the part of the scraper bar 40 extending out of the funnel 30 can be extended into the container to guide the powder to enter the container from the opening of the container. The scraper bar 40 occupies a part of the space of the powder leakage port 32 at the powder leakage port 32, and the radial dimension of the scraper bar 40 at the powder leakage port 32 is much smaller than the caliber of the powder leakage port 32. The blocking effect of the scraper bar 40 on the powder can be ignored, and the effect on the powder discharge speed can be ignored. Optionally, the extension direction of the part of the scraper bar 40 extending out of the funnel 30 can be parallel to the axial direction of the stirring rod 20, which is conducive to guiding the powder to fall vertically into the container and preventing the powder from floating around. In addition, the upper end of the scraper bar 40 extending out of the funnel 30 is close to the inner wall of the powder leakage port 32, so that when the scraper bar 40 rotates with the stirring rod 20, its upper end can scrape off the powder remaining on the inner wall of the powder leakage port 32, further improving the powder distribution accuracy.

[0086] Optional, reference Figures 1 to 4The scraper strip 40 includes a connecting section 41 and a powder scraping section 42. The connecting section 41 is connected to the stirring rod 20, and the powder scraping section 42 is connected to the connecting section 41. The powder scraping section 42 is at least partially arranged adjacent to the inner wall of the receiving chamber 31, and is suitable for scraping off the powder on the inner wall of the receiving chamber 31.

[0087] Among them, the powder scraping section 42 can be directly connected or indirectly connected to the connecting section 41. Indirect connection means that the powder scraping section 42 and the connecting section 41 can be connected through an intermediate component, without limitation. The connection method between the connecting section 41 and the stirring rod 20 can be a fixed connection, a rotatable connection, a movable connection, etc., without limitation. The powder scraping section 42 is at least partially arranged adjacent to or in contact with the inner wall of the receiving chamber 31 (i.e., the inner wall of the funnel 30). Preferably, at least part of the powder scraping section 42 is arranged adjacent to the inner wall of the receiving chamber 31, that is, at least part of the powder scraping section 42 has a small distance from the inner wall of the receiving chamber 31, and the distance is smaller than the size of the powder. In this way, it can avoid direct friction between the powder scraping section 42 and the inner wall of the receiving chamber 31, which affects the working efficiency and service life of the powder scraping section 42, and can also well scrape off the powder on the inner wall of the receiving chamber 31. The fact that the powder scraping section 42 at least partially contacts the inner wall of the receiving chamber 31 can be understood as the fact that the powder scraping section 42 at least partially contacts the inner wall of the receiving chamber 31 slightly, thereby minimizing the friction between the two. The powder scraping section 42 can sweep through various positions of the inner wall of the receiving chamber 31 in the circumferential direction and most positions in the axial direction during the rotation of the stirring rod 20, and can scrape the powder off the inner wall of the receiving chamber 31 to avoid the powder remaining on the inner wall of the receiving chamber 31 and causing the discharge amount to be less than expected.

[0088] Optional, reference Figures 1 to 4 The scraper strip 40 also includes a fixed section 43, which is connected to the connecting section 41 and / or the powder scraping section 42. The fixed section 43 is movably connected to the outer surface of the barrel body 10 near the powder outlet 12 or the fixed section 43 is movably connected to the inner surface of the funnel 30 near one end of the barrel body 10.

[0089] Among them, the fixed section 43 can be directly or indirectly connected to the connecting section 41, and the fixed section 43 can also be directly or indirectly connected to the powder scraping section 42. For the indirect connection, please refer to the above similar instructions. If the fixed section 43 is movably connected to the barrel body 10, the movable connection method of the fixed section 43 and the barrel body 10 can be a rotational connection, a movable connection, etc., without limitation. If the fixed section 43 is movably connected to the funnel 30, the movable connection method of the fixed section 43 and the funnel 30 can be a rotational connection, a movable connection, etc., without limitation. The fixed section 43 is used to limit the scraping strip 40, to ensure that the connecting section 41 is smoothly connected to the stirring rod 20, and that the powder scraping section 42 can always be in a position close to or slightly in contact with the inner wall of the receiving chamber 31, to ensure the reliability of the powder scraping operation.

[0090] Optional, reference Figures 1 to 4The powder barrel 100 further includes a limiting structure, which is disposed on the outer surface of the barrel body 10 near the powder outlet 12, and the fixing section 43 is cooperatively connected with the limiting structure.

[0091] Among them, the fixed section 43 is movably connected to the outer surface of the barrel body 10. Optionally, the fixed section 43 can rotate around the barrel body 10 under the limitation of the limiting structure and the structure of the barrel body 10, and the axis of rotation is roughly the rotation axis of the stirring rod 20. The specific structure of the limiting structure is not limited. By setting the limiting structure, the fixed section 43 is connected with the limiting structure in coordination, and the limiting structure plays a limiting role, ensuring that the fixed section 43 will not be separated from the barrel body 10 and making the fixed section 43 movably connected to the barrel body 10, realizing the limitation of the scraper bar 40, and ensuring that the posture of the scraper bar 40 can scrape off the powder on the inner wall of the funnel 30.

[0092] Optional, reference Figures 1 to 4 The limiting structure includes a clamping spring 51, which is clamped on the outer surface of the barrel 10 near the powder outlet 12. The fixed section 43 is wound around the barrel 10 and is located on the side of the clamping spring 51 facing away from the powder outlet 12. The clamping spring 51 can limit the fixed section 43 from moving downward and leaving the barrel 10.

[0093] Optionally, the limiting structure further includes a washer 52 , which is sleeved on the barrel body 10 and located between the retaining spring 51 and the fixing section 43 .

[0094] The spring clip 51 is elastic and can be installed or removed from the barrel body 10 by elastic deformation. The washer 52 is wear-resistant and is arranged between the spring clip 51 and the fixed section 43 to avoid the problem of serious wear caused by direct contact between the fixed section 43 and the spring clip 51, thereby improving the relative rotation smoothness between the fixed section 43 and the barrel body 10.

[0095] The fixed section 43 can be sleeved on the outer surface of the conical structure 14 of the barrel body 10. The diameter of the conical structure 14 is small at the end close to the powder leakage port 32, and the diameter gradually increases in the direction away from the powder leakage port 32. The fixed section 43 can be set to be roughly annular, and the inner diameter is larger than the outer diameter of the end of the conical structure 14 close to the powder leakage port 32, and smaller than the outer diameter of the maximum outer diameter of the conical structure 14 (for example, the junction of the conical structure 14 and the columnar structure 15), so that the outer surface of the conical structure 14 can have a limiting effect on the fixed section 43. The fixed section 43 is inserted into the conical structure 14 from the end of the conical structure 14 close to the powder leakage port 32, and abuts against the outer surface of the conical structure 14 at a certain position of the conical structure 14 and cannot continue to move to the end away from the powder leakage port 32.

[0096] The retaining spring 51 and the washer 52 can be arranged on the outer surface of the conical structure 14, and the inner diameter of the fixed section 43 can be set to a reasonable value, so that in the axial direction of the stirring rod 20, the fixed section 43 is limited by the outer surface of the conical structure 14 at the end away from the powder leakage port 32, and is limited by the retaining spring 51 and the washer 52 at the end close to the powder leakage port 32, and the fixed section 43 can rotate relative to the conical structure 14 at this position.

[0097] Optionally, the outer surface of the barrel body 10 may also be provided with a limiting surface 16 and a mounting groove 17 surrounding the barrel body 10, the limiting surface 16 faces the side of the powder leakage port 32, the mounting groove 17 is located near the side of the limiting surface 16 close to the powder leakage port 32, the retaining spring 51 is sleeved in the mounting groove 17 and extends to the outer surface of the barrel body 10, the limiting surface 16 is arranged opposite to the retaining spring 51 and the washer 52 and forms an annular groove, and the fixing section 43 is accommodated in the groove. In this way, the setting of the mounting groove 17 can enable the retaining spring 51 to stably engage with the barrel body 10, play a basic supporting role, and the setting of the limiting surface 16 enables the fixing section 43 to be accommodated in the groove, and the limiting effect is improved.

[0098] Optional, reference Figures 1 to 4 The powder scraping section 42 is disposed away from the stirring rod 20 , and the powder scraping section 42 and the inner wall of the receiving chamber 31 are at the same inclination angle relative to the axis of the stirring rod 20 .

[0099] The funnel 30 is conical, and the shape of the powder scraping section 42 matches the shape of the inner wall of the funnel 30 in the longitudinal section. Figure 2 As shown, in the longitudinal section, the shape of the inner wall of the funnel 30 is a straight line, and the powder scraping section 42 is roughly a rod-shaped extending straight line. The powder scraping section 42 and the inner wall of the receiving chamber 31 have the same inclination angle relative to the axis of the stirring rod 20, so that the powder scraping section 42 can be arranged adjacent to or in contact with various parts of the funnel 30, and can scrape off the powder at various places to avoid powder residue.

[0100] It should be understood that since the powder outlet 12 is located between the connection between the funnel 30 and the barrel 10 and the powder outlet 32, most of the powder coming out of the powder outlet 12 is scattered downward (i.e., in the direction close to the powder outlet 32), and the inner wall of the funnel 30 may receive powder mainly at the position flush with the powder outlet 12. Therefore, the end of the powder scraping section 42 away from the powder outlet 32 ​​should at least be set to the position where the inner wall of the funnel 30 is flush with the powder outlet 12. In order to provide redundancy, the powder scraping section 42 can be set to the position where the inner wall of the funnel 30 is flush with the powder outlet 12 and is higher (i.e., away from the direction of the powder outlet 32), close to the connection between the funnel 30 and the barrel 10. In this way, it can be ensured that the powder received at various positions on the inner wall of the funnel 30 can be scraped off by the powder scraping section 42.

[0101] Optional, reference Figure 2 and Figure 3The stirring rod 20 extends from the powder outlet 12 to the barrel 10 and into the receiving chamber 31, and the scraper 40 is connected to the portion of the stirring rod 20 extending from the barrel 10. This arrangement makes it easy to connect the scraper 40 to the stirring rod 20 so that the stirring rod 20 drives the scraper 40 to rotate.

[0102] Optional, reference Figures 1 to 4 The stirring rod 20 is also suitable for moving along its own axial direction. A groove 21 is provided at one end of the stirring rod 20 extending out of the powder outlet 12 along the axial direction of the stirring rod 20, and one end of the connecting section 41 away from the powder scraping section 42 extends into the groove 21. The inner wall of the groove 21 in the axial direction of the stirring rod 20 is always spaced from the connecting section 41.

[0103] At least one of the two side walls of the connecting section 41 and the slot 21 in the radial direction of the stirring rod 20 may be kept in contact, or both may be spaced apart, so that when the stirring rod 20 rotates, the connecting section 41 can be driven to rotate, and then the entire scraper 40 can be driven to rotate. The stirring rod 20 can control the opening of the powder outlet 12 by moving along its own axial direction. In order to avoid the stirring rod 20 driving the scraper 40 to move in the axial direction when moving along its own axial direction, thereby affecting the working stability of the scraper 40, and to avoid the scraper 40 hindering the smooth movement of the stirring rod 20 in the axial direction, the slot 21 is provided in the stirring rod 20, and the inner wall of the slot 21 in the axial direction of the stirring rod 20 is always spaced apart from the connecting section 41, that is, any position of the stirring rod 20 moving in its own axial direction will not generate a transmission relationship with the connecting section 41 in the axial direction, and the stirring rod 20 can only drive the scraper 40 to rotate around the axial direction, but cannot drive the scraper 40 to move in the axial direction, thereby ensuring the position and movement stability of the scraper 40, and also ensuring the working stability of the stirring rod 20.

[0104] Optional, reference Figure 3 and Figure 4 One end of the fixed section 43 is connected to the connecting section 41 , and the other end of the fixed section 43 is connected to the powder scraping section 42 ; the connecting section 41 and the powder scraping section 42 are arranged adjacent to each other, and the scraping strip 40 also includes a connecting member 44 , which connects the fixed connecting section 41 and the powder scraping section 42 .

[0105] The connecting section 41 has at least a portion of the same extension direction as the powder scraping section 42, so that the two can be arranged adjacent to each other at a certain position. The connecting member 44 can be any feasible structure such as a buckle or a clip, so that the connecting member 44 is connected and fixed to the powder scraping section 42. In this way, the connecting section 41 can drive the powder scraping section 42 to rotate through the fixing section 43, and the connecting section 41 can also drive the powder scraping section 42 to rotate through the connecting member 44, so that the overall structural strength and stability of the scraping strip 40 are improved, and the reliability and service life of the powder scraping operation are improved.

[0106] Optional, reference Figures 2 to 4The scraper strip 40 also includes a guide section 45, which is connected to one end of the powder scraping section 42 away from the connecting section 41. The guide section 45 is located at the powder leakage port 32 and at least partially extends out of the funnel 30 from the powder leakage port 32. The part of the guide section 45 extending out of the funnel 30 extends toward the axial direction of the stirring rod 20.

[0107] The extension direction of the guide section 45 can be roughly the axial direction of the stirring rod 20, and the guide section 45 can play a role in guiding the powder discharge direction. When the opening size of the container is small, the guide section 45 can be extended into the opening of the container so that the powder can enter the container along the guide section 45, so that the feeding of the container with a small opening size can be compatible.

[0108] Optional, reference Figure 1 and Figure 5 The stirring rod 20 includes a blocking section 22 and a powder outlet section 23. The blocking section 22 is connected to one end of the powder outlet section 23 facing the powder leakage port 32. The diameter of the blocking section 22 is equal to the caliber of the powder outlet 12. At least part of the radial dimension of the powder outlet section 23 is smaller than the caliber of the powder outlet 12.

[0109] The outer circumferential shape of the blocking section 22 is adapted to the inner wall shape of the powder outlet 12, for example, the cross section is circular, and the outer circumferential shape of the powder outlet section 23 is at least partially incompatible with the inner wall shape of the powder outlet 12, and its specific shape and structure can be set as needed without limitation. The blocking section 22 and the powder outlet section 23 are set, and the stirring rod 20 is moved axially so that one of the blocking section 22 and the powder outlet section 23 is located at the powder outlet 12, so that the blocking section 22 can block the powder outlet 12, so that the opening of the powder outlet 12 is 0, and the powder outlet section 23 can make the opening of the powder outlet 12 greater than 0, and the different positions of the powder outlet section 23 relative to the powder outlet 12 can be adjusted to adjust the different openings of the powder outlet 12 to achieve different powder outlet speeds.

[0110] Optional, reference Figure 5 The outer peripheral surface of the powder outlet section 23 includes a powder outlet surface 231, at least a portion of the powder outlet surface 231 has an angle with the axis of the stirring rod 20, and the end of the powder outlet surface 231 away from the blocking section 22 is closer to the center line of the stirring rod 20 than the end close to the blocking section 22.

[0111] The powder discharge surface 231 can be a plane, a curved surface, a combination of a plane and a plane, a combination of a plane and a curved surface, etc., without limitation. The entire powder discharge surface 231 can be tilted relative to the axis of the stirring rod 20, so that when different positions of the powder discharge surface 231 are located at the powder discharge port 12, the size of the opening formed by the powder discharge surface 231 and the inner wall of the powder discharge port 12 can be changed, so as to adjust the opening of the powder discharge port 12. It is also possible that part of the area of ​​the powder discharge surface 231 is tilted relative to the axis of the stirring rod 20, and part of the area is parallel to the axis of the stirring rod 20, so that the size of the opening formed by the powder discharge surface 231 and the inner wall of the powder discharge port 12 can be adjusted first and then remain unchanged, which can reduce the precision requirement for the movement of the stirring rod 20 in the axial direction.

[0112] Optional, reference Figure 1 and Figure 5 The stirring rod 20 further includes a main body section 24 and an extrusion section 25. The main body section 24 is connected to one end of the powder outlet section 23 away from the blocking section 22. The extrusion section 25 is connected to the end of the main body section 24 close to the powder outlet section 23 or the extrusion section 25 is connected to the powder outlet section 23, and the extrusion section 25 protrudes from the outer surface of the main body section 24. The extrusion section 25 is formed with an extrusion surface 251, which faces the powder outlet section 23, and the extrusion surface 251 has an angle with the axial direction and the circumferential direction of the stirring rod 20.

[0113] The extrusion section 25 can be any feasible shape and structure without limitation. The extrusion section 25 protrudes from the outer surface of the main section 24 and also protrudes from the outer surface of the powder outlet section 23, so that the extrusion section 25 can play a stirring role on the powder in the barrel 10. The extrusion section 25 can be an integral structure with the main section 24, or a split structure formed by connecting by means of snap connection, screw connection, etc. without limitation. The extrusion surface 251 can be a plane, a curved surface, etc. without limitation. The extrusion surface 251 is inclined relative to the axis of the stirring rod 20, and has an angle with the axial and circumferential directions of the stirring rod 20, and the extrusion surface 251 faces the powder outlet section 23, so that when the stirring rod 20 drives the extrusion section 25 to stir the powder, the extrusion surface 251 can apply pressure to the powder toward the powder outlet section 23, so that the powder moves toward the powder outlet section 23, thereby making the powder flow out of the powder outlet 12 smoother. Optionally, the orientation of the extrusion surface 251 is also compatible with the rotation direction of the stirring rod 20. This arrangement can facilitate the extrusion surface 251 to generate thrust on the powder in both the rotation direction of the stirring rod 20 and the axial direction of the stirring rod 20, which is more conducive to powder discharge.

[0114] Optional, reference Figure 5 The extrusion surface 251 also extends to the powder outlet surface 231 of the powder outlet section 23 and is smoothly connected to the powder outlet surface 231 , and the extrusion surface 251 and the powder outlet surface 231 form an obtuse angle.

[0115] The extrusion surface 251 and the powder discharge surface 231 are smoothly connected to avoid stress concentration at the connection between the two, which is beneficial to improving the structural strength of the stirring rod 20; in addition, it can also avoid powder jamming at the connection between the extrusion surface 251 and the powder discharge surface 231.

[0116] For embodiments in which both the extrusion surface 251 and the powder discharge surface 231 are planes, the two can directly form an obtuse angle. For embodiments in which at least one of the extrusion surface 251 and the powder discharge surface 231 is a curved surface, the angle between the section at any point on the curved surface and another plane or another section at any point on the curved surface can be measured. In other words, the extrusion surface 251 and the powder discharge surface 231 together form a "V"-shaped groove, and the angle between the two surfaces is the opening angle of the "V"-shaped groove, and the opening angle is an obtuse angle. The specific value of the obtuse angle is not limited. For example, the obtuse angle is 120°. Furthermore, both the extrusion surface 251 and the powder discharge surface 231 have an angle with the axis of the stirring rod 20, for example, the angle is 30°, 45°, or other angles, without limitation. The extrusion surface 251 and the powder outlet surface 231 are arranged to form an obtuse angle, so that the extrusion surface 251 and the powder outlet surface 231 have a relatively long extension length on the axis of the stirring rod 20, so that the stirring rod 20 can move a long distance along its own axis, so as to facilitate the adjustment of the powder outlet 12 to multiple different openings. At the same time, the extrusion section 25 can realize the extrusion of the powder, so that the powder can be more smoothly gathered to the powder outlet surface 231.

[0117] Optional, reference Figure 1 and Figure 3 The barrel body 10 further includes a cover 13, and the cover 13 and the powder outlet 12 are respectively located at two ends of the barrel body 10 in the axial direction of the stirring rod 20. The powder barrel 100 further includes a cover 60, an elastic structure 70 and a docking joint 80, the cover 60 is covered at the cover 13, the elastic structure 70 is connected to the cover 60 and the stirring rod 20, the stirring rod 20 is movably connected to the cover 60, and the docking joint 80 is connected to the end of the stirring rod 20 facing away from the powder outlet 12.

[0118] Optionally, the cover body 60 includes a cover plate 61 and an extension structure 62, the cover plate 61 is covered on the cover opening 13, the extension structure 62 is connected to the cover plate 61, the extension structure 62 protrudes from the side of the cover plate 61 toward the powder outlet 12, the extension structure 62 encloses a telescopic chamber 621, and the elastic structure 70 is accommodated in the telescopic chamber 621.

[0119] The cover plate 61 is roughly plate-shaped, and the shape of the surrounding side surfaces of the cover plate 61 is the same as the shape of the inner wall of the cover opening 13, and both can be circular or non-circular. When the cover plate 61 is covered on the cover opening 13, the surrounding side surfaces of the cover plate 61 are closely arranged with the inner wall of the cover opening 13, so that the cover plate 61 and the barrel body 10 are relatively fixed in the circumferential direction and axial direction of the stirring rod 20, and the barrel body 10 can limit the rotation and movement of the cover body 60 relative to the barrel body 10.

[0120] The cover plate 61 may be provided with a powder adding port 611, which is in communication with the accommodating chamber 11, and powder can be added to the barrel body 10 through the powder adding port 611. After the powder is added, the powder adding port 611 may be sealed. The cover plate 61 may also be provided with a first mounting hole 612 spaced apart from the powder adding port 611, the first mounting hole 612 is directly opposite to the powder outlet 12 in the axial direction of the stirring rod 20, the extension structure 62 is connected to the outer periphery of the first mounting hole 612, and the first mounting hole 612 is in communication with the telescopic chamber 621. The extension structure 62 is roughly cylindrical with one end open, and a second mounting hole 622 is provided at the unopened end, the second mounting hole 622 is directly opposite to the powder outlet 12 in the axial direction of the stirring rod 20, and the second mounting hole 622 is in communication with the telescopic chamber 621.

[0121] The elastic structure 70 may include a spring 71, a slider 72, etc., without limitation. The structure of the joint 80 is not limited, and is optional. Figure 1 and Figure 6 A mating groove 81 is provided at one end of the docking joint 80 away from the stirring rod 20. The cross-sectional shape of the mating groove 81 is non-circular, and can be specifically a regular polygon, which is used to cooperate with the driving device. The driving device can drive the docking joint 80 to rotate by extending into the mating groove 81, thereby driving the stirring rod 20 to rotate. There is no need to set up other connecting structures. The structure is simple and the operation is easy.

[0122] Combination Figure 1 and Figure 5 , the stirring rod 20 is inserted into the first mounting hole 612 and the second mounting hole 622. Specifically, the main section 24 of the stirring rod 20 is inserted into the first mounting hole 612 and the second mounting hole 622. The docking joint 80 is connected to the end of the main section 24 away from the powder outlet section 23, which can be screwed, clamped, etc., without limitation. One end of the elastic structure 70 elastically abuts against the extension structure 62, and the other end abuts against the docking joint 80. The elastic structure 70 is always in a compressed state, and the elastic tension acts on the docking joint 80 to drive the stirring rod 20 to have a tendency to move toward the cover plate 61. A limiting boss 26 can also be provided on the periphery of the main section 24. The limiting boss 26 is used to abut against the extension structure 62 to limit the displacement of the stirring rod 20 toward the side of the cover plate 61.

[0123] The stirring rod 20 may also be connected to a stirring blade 27 . The stirring blade 27 may be a curved rod-shaped component, a spiral rod-shaped component, or a plurality of blade-shaped structures, without limitation.

[0124] When the powder discharge operation is not performed, under the elastic tension of the elastic structure 70, the blocking section 22 of the stirring rod 20 blocks the powder discharge port 12; when the powder discharge operation is performed, the driving device cooperates with the docking head 80 and provides rotation and downward pressure, the rotational force drives the stirring rod 20 to rotate, the stirring blade 27 rotates to stir the powder in the barrel body 10, and the extrusion section 25 can apply downward pressure to drive the powder to move toward the powder discharge port 12; when the stirring rod 20 is pressed downward, the elastic structure 70 is further compressed, the blocking section 22 extends out of the barrel body 10 and the powder discharge section 23 is located at the powder discharge port 12, the powder discharge section 23 adjusts the opening of the powder discharge port 12 to realize the powder discharge operation.

[0125] Optional, reference Figure 3 and Figure 7 The powder barrel 100 further includes a locking mechanism 90, which is disposed on the barrel body 10 and / or the cover body 60 so that the barrel body 10 and the cover body 60 can be detachably connected.

[0126] The locking mechanism 90 can be any feasible structure such as a plunger, a buckle, etc., without limitation. The function of the locking mechanism 90 is to relatively fix the cover body 60 and the barrel body 10 in the axial direction of the stirring rod 20 to prevent the stirring rod 20 from moving the cover body 60 when the stirring rod 20 moves in the axial direction. The locking mechanism 90 can relatively fix or detach the barrel body 10 and the cover body 60 in any feasible manner without limitation. For example, Figure 3 and Figure 7 As shown, the locking mechanism 90 is two plungers, and the two plungers are arranged at an interval. When the plungers are simultaneously inserted into the barrel body 10 and the cover body 60, the barrel body 10 and the cover body 60 are relatively fixed in the axial direction of the stirring rod 20. When the plungers are inserted into one of the barrel body 10 or the cover body 60, but not into the other, the barrel body 10 and the cover body 60 are not fixed in the axial direction of the stirring rod 20 and can be separated and disassembled. Providing a detachably connected cover body 60 and barrel body 10 can facilitate the assembly of the powder barrel 100. Optionally, assembly grooves (not shown) are provided on opposite sides of the cover body 60, and the plunger is arranged in the assembly groove, and the ball head of the plunger can extend out of the assembly groove in the absence of external force, and can be retracted into the assembly groove under the action of external force; when the barrel body 10 and the cover body 60 are fixedly connected, the ball head of the plunger extends out and engages with the barrel body 10, and when the ball head of the plunger retracts under the action of external force, the cover body 60 can be separated from the barrel body 10.

[0127] Second embodiment

[0128] This embodiment is basically the same as the first embodiment described above, with the following differences.

[0129] Optional, reference Figures 8 to 10 The powder scraping section 42 extends in a spiral shape, and the center line of the spiral is the axis of the stirring rod 20.

[0130] Optionally, the connecting section 41 of the scraping strip 40 is connected and fixed to the end of the stirring rod 20 extending from the barrel body 10, and the powder scraping section 42 is directly connected to the connecting section 41, and there is no need to set the fixed section 43 to be movably connected to the outer surface of the barrel body 10, and there is no need to set the slot 21 opened at the end of the stirring rod 20 extending from the barrel body 10. The powder scraping section 42 extending in a spiral shape, at least part of the powder scraping section 42 is also arranged adjacent to or in contact with the inner wall of the funnel 30, which can achieve the purpose of scraping the powder on the inner wall of the funnel 30. In addition, the scraping strip 40 is connected and fixed to the stirring rod 20, and when the stirring rod 20 moves along the axial direction, the scraping strip 40 moves synchronously. Such a setting can increase the working area of ​​the powder scraping section 42 on the inner wall of the funnel 30, so that the powder scraping effect is better. In order to further improve the powder scraping effect, the vertical distance (i.e., the pitch) between any two adjacent spirals of the spiral powder scraping section 42 is less than the downward stroke of the stirring rod 20 when the powder is discharged. Optionally, the change in the circumferential dimension of the spiral powder scraping segment 42 is substantially equal to the change in the inner diameter of the funnel 30 , so as to maximize the adjacent area or contact area between the powder scraping segment 42 and the inner wall of the funnel 30 .

[0131] Optional, reference Figure 8 The powder barrel 100 further includes a conduit 35 , which is connected to the funnel 30 , wherein a central hole 351 of the conduit 35 is connected to the powder leakage port 32 , and the conduit 35 extends toward the axial direction of the stirring rod 20 .

[0132] The conduit 35 and the funnel 30 can be connected in any feasible manner such as screw connection or clamping connection without limitation. The conduit 35 is a straight rod structure and extends along the axial direction of the stirring rod 20 in the direction away from the funnel 30. After the powder leaks from the powder leakage port 32, it is transported in the center hole 351 of the conduit 35. When feeding, the axial direction of the stirring rod 20 can be set to a vertical direction, so that the powder falls along the vertical direction when being transported in the center hole 351, which can avoid the powder from adhering to the inner wall of the conduit 35 as much as possible. The outer diameter of the conduit 35 can be roughly equal to the caliber of the powder leakage port 32. The end of the conduit 35 away from the funnel 30 can be extended into a smaller container or a deeper container, such as a capsule test tube, to realize the feeding operation of a very small container; or extended into a constant volume bottle to avoid the powder from adhering to the inner wall of the constant volume bottle.

[0133] Optional, reference Figure 8 and Fig.11 There are multiple extrusion sections 25, and the multiple extrusion sections 25 are arranged at intervals along the axis direction of the stirring rod 20. From the main section 24 to the blocking section 22, the radial dimensions of the multiple extrusion sections 25 protruding from the main section 24 gradually decrease, and the radial dimension of the extrusion section 25 closest to the blocking section 22 protruding from the main section 24 is not greater than the maximum radial dimension of the powder discharge section 23 protruding from the main section 24.

[0134] The multiple extrusion sections 25 may be an integral structure with the main section 24 and / or the powder outlet section 23, or may be a split structure connected by means of snap connection, screw connection, etc., without limitation. In this embodiment, the powder outlet surface 231 of the powder outlet section 23 may be one or more. When there are multiple powder outlet surfaces 231, the multiple powder outlet surfaces 231 are arranged at intervals along the circumference of the powder outlet section 23. The multiple extrusion sections 25 may correspond to the same powder outlet surface 231, and the extrusion sections 25 may be arranged or not arranged on other powder outlet surfaces 231. The radial dimensions of the multiple extrusion sections 25 protruding from the main section 24 gradually decrease, and can adapt to the conical shape of the conical structure 14 of the barrel body 10. The radial dimension of the extrusion section 25 closest to the blocking section 22 protruding from the main section 24 is no greater than the maximum radial dimension of the powder outlet section 23 protruding from the main section 24, so that the extrusion section 25 closest to the blocking section 22 can be extended into the powder outlet 12 to press down and stir the powder at the powder outlet 12 to prevent the powder from clogging the powder outlet 12.

[0135] Optional, reference Figure 8 , the extension structure 62 protrudes from the side of the cover plate 61 facing away from the powder outlet 12. The extension structure 62 may be a cylindrical structure with two ends open, one end of which is connected to the cover plate 61, and the other end of which extends in a direction away from the funnel 30. The elastic structure 70 includes a spring 71 and a slider 72. The slider 72 is connected and fixed to one end of the stirring rod 20 close to the docking joint 80. One end of the spring 71 abuts against the cover plate 61, and the other end abuts against the slider 72. The slider 72 and the inner wall of the extension structure 62 can slide relative to each other in the axial direction and circumferential direction of the stirring rod 20.

[0136] Optional, reference Figures 8 to 10 A connecting opening 18 is provided at the connection between the barrel body 10 and the funnel 30 , and the connecting opening 18 connects the receiving cavity 31 with the outside.

[0137] The connecting port 18 can be provided in the barrel body 10 or the funnel 30, or can be provided in both the barrel body 10 and the funnel 30. The connecting port 18 is not connected to the accommodating chamber 11 of the barrel body 10 to prevent the outside air from entering the accommodating chamber 11 and causing the powder to be damp and oxidized. The connecting port 18 is connected to the accommodating chamber 31 of the funnel 30, so that the accommodating chamber 31 can be connected to the outside through the connecting port 18, so that the air pressure in the accommodating chamber 31 is the same as the outside air pressure, and the negative pressure generated in the accommodating chamber 31 is prevented from affecting the powder discharge from the powder leakage port 32. The connecting port 18 is arranged at the connection between the barrel body 10 and the funnel 30, and there will be no powder at this position, so as to prevent the powder from leaking out of the connecting port 18 and affecting the powder distribution accuracy.

[0138] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0139] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A powder barrel, characterized in that: include: The barrel body has a containing cavity for containing powder and a powder outlet communicated with the containing cavity; A stirring rod, adapted to rotate around its own axis, wherein at least a portion of the stirring rod is disposed in the accommodating cavity and is used to adjust the opening of the powder outlet; A funnel, one end of which is connected to the barrel body, and the other end of which is provided with a powder leakage port, the funnel encloses a receiving cavity, and the powder outlet and the powder leakage port are both connected to the receiving cavity; A scraper bar is at least partially disposed in the receiving cavity, the scraper bar is connected to the stirring rod, and is adapted to follow the stirring rod and rotate around the axis direction of the stirring rod.

2. The powder barrel according to claim 1, characterized in that: The radial dimension of the funnel gradually decreases from one end connected to the barrel body to one end of the powder leakage port; the diameter of the powder leakage port is smaller than or equal to the diameter of the powder outlet.

3. The powder barrel according to claim 1, characterized in that: One end of the barrel body close to the funnel is a conical structure, the funnel is detachably connected to the barrel body, and at least a part of the conical structure is located in the funnel.

4. The powder barrel according to claim 1, characterized in that: The scraper strip also extends out of the funnel from the powder leakage port.

5. The powder barrel according to claim 1, characterized in that: The scraping strip includes a connecting section and a powder scraping section, wherein the connecting section is connected to the stirring rod, and the powder scraping section is connected to the connecting section. The powder scraping section is at least partially arranged adjacent to or in contact with the inner wall of the receiving cavity, and is suitable for scraping powder off the inner wall of the receiving cavity.

6. The powder barrel according to claim 5, characterized in that: The scraper strip also includes a fixed section, which is connected to the connecting section and / or the powder scraping section. The fixed section is movably connected to the outer surface of the barrel body near the powder outlet or the fixed section is movably connected to the inner surface of the funnel near one end of the barrel body.

7. The powder barrel according to claim 6, characterized in that: The powder barrel further comprises a limiting structure, which is arranged on the outer surface of the barrel body near the powder outlet, and the fixing section is cooperatively connected with the limiting structure; The limiting structure includes a retaining spring and a washer, the retaining spring is clamped on the outer surface of the barrel body close to the powder outlet, the fixed section is wrapped around the barrel body and is located on the side of the retaining spring facing away from the powder outlet; the washer is sleeved on the barrel body and is located between the retaining spring and the fixed section.

8. The powder barrel according to claim 5, characterized in that: The powder scraping section is arranged away from the stirring rod, and the powder scraping section and the inner wall of the receiving cavity have the same inclination angle relative to the axis of the stirring rod.

9. The powder barrel according to claim 5, characterized in that: The powder scraping section extends in a spiral shape, and the center line of the spiral is the axis of the stirring rod.

10. The powder barrel according to claim 5, characterized in that: The stirring rod extends from the powder outlet to the barrel body and extends into the receiving cavity; the scraper is connected to the portion of the stirring rod extending from the barrel body.

11. The powder barrel according to claim 10, characterized in that: The stirring rod is also suitable for moving along its own axial direction; a groove is provided at one end of the stirring rod extending out of the powder outlet along the axial direction of the stirring rod, and an end of the connecting section away from the powder scraping section extends into the groove, and an inner wall of the groove in the axial direction of the stirring rod is always spaced apart from the connecting section.

12. The powder barrel according to claim 6, characterized in that: One end of the fixed section is connected to the connecting section, and the other end of the fixed section is connected to the powder scraping section; the connecting section is arranged adjacent to the powder scraping section, and the scraping strip further comprises a connecting member, which connects and fixes the connecting section and the powder scraping section.

13. The powder barrel according to claim 5, characterized in that: The scraper strip also includes a guide section, which is connected to one end of the powder scraping section away from the connecting section. The guide section is located at the powder leakage port and at least partially extends from the powder leakage port to the funnel. The part of the guide section extending from the funnel extends toward the axial direction of the stirring rod.

14. The powder barrel according to claim 1, characterized in that: The powder barrel further comprises a conduit, the conduit is connected to the funnel, a central hole of the conduit is communicated with the powder leakage port, and the conduit extends toward the axial direction of the stirring rod.

15. The powder barrel according to claim 1, characterized in that: A communication port is provided at the connection between the barrel body and the funnel, and the communication port is connected with the receiving cavity and the outside.

16. The powder barrel according to any one of claims 1 to 15, characterized in that: The stirring rod includes a blocking section and a powder outlet section, the blocking section is connected to one end of the powder outlet section facing the powder leakage port, the diameter of the blocking section is equal to the caliber of the powder outlet, and at least part of the radial dimension of the powder outlet section is smaller than the caliber of the powder outlet.

17. The powder barrel according to claim 16, characterized in that: The outer peripheral surface of the powder outlet section includes a powder outlet surface, at least a portion of the powder outlet surface has an angle with the axis of the stirring rod, and an end of the powder outlet surface away from the blocking section is closer to the center line of the stirring rod than an end close to the blocking section.

18. The powder barrel according to claim 16, characterized in that: The stirring rod also includes a main body section and an extrusion section, the main body section is connected to one end of the powder outlet section away from the blocking section, the extrusion section is connected to the end of the main body section close to the powder outlet section or the extrusion section is connected to the powder outlet section, the extrusion section protrudes from the outer surface of the main body section, the extrusion section is formed with an extrusion surface, the extrusion surface faces the powder outlet section, and the extrusion surface forms an angle with the axial direction and the circumferential direction of the stirring rod.

19. The powder barrel according to claim 18, characterized in that: The extrusion surface also extends to the powder outlet surface of the powder outlet section and is smoothly transitionally connected to the powder outlet surface, and the extrusion surface and the powder outlet surface form an obtuse angle.

20. The powder barrel according to claim 18, characterized in that: There are multiple extrusion sections, and the multiple extrusion sections are arranged at intervals along the axial direction of the stirring rod; from the main section to the blocking section, the radial dimensions of the multiple extrusion sections protruding from the main section gradually decrease, and the radial dimension of the extrusion section closest to the blocking section protruding from the main section is not greater than the maximum radial dimension of the powder outlet section protruding from the main section.

21. The powder barrel according to any one of claims 1 to 15, characterized in that: The barrel body further comprises a cover opening, wherein the cover opening and the powder outlet are respectively located at two ends of the barrel body in the axial direction of the stirring rod; the powder barrel further comprises a cover body, an elastic structure and a docking joint, wherein the cover body is arranged at the cover opening, the elastic structure is connected to the cover body and the stirring rod, the stirring rod is movably connected to the cover body, and the docking joint is connected to an end of the stirring rod facing away from the powder outlet; The cover body comprises a cover plate and an extension structure, wherein the cover plate is covered on the cover opening, the extension structure is connected to the cover plate and encloses a telescopic chamber, and the elastic structure is accommodated in the telescopic chamber; The extension structure protrudes from a side of the cover plate facing the powder outlet, or the extension structure protrudes from a side of the cover plate facing away from the powder outlet.

22. The powder barrel according to claim 21, characterized in that: The powder barrel further comprises a locking mechanism, and the locking mechanism is arranged on the barrel body and / or the cover body so that the barrel body and the cover body are detachably connected.

23. A powder dispensing device, characterized in that It comprises a driving device and a powder barrel according to any one of claims 1 to 22, wherein the driving device is used to drive a stirring rod of the powder barrel to rotate.

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