Powder bucket and powder dispensing device

Abstract

A powder bucket and a powder dispensing device are provided. The powder bucket includes a bucket body, a stirring rod, a funnel, and a scraper. The bucket body defines a first accommodating cavity and has a powder outlet in communication with the first accommodating cavity. The stirring rod is rotatable around an axis of the stirring rod, at least partially placed in the first accommodating cavity, and configured to adjust an opening degree of the powder outlet. The funnel has one end connected to the bucket body and the other end having a powder leakage port. The powder outlet and the powder leakage port are both in communication with a second accommodating cavity defined by the funnel. The scraper is at least partially placed in the second accommodating cavity, connected to the stirring rod, and rotatable around the axis of the stirring rod following rotation of the stirring rod.

What is claimed is: 
     
         1 . A powder bucket, comprising:
 a bucket body, defining a first accommodating cavity for storing powder and having a powder outlet in communication with the first accommodating cavity;   a stirring rod, rotatable around an axis of the stirring rod, at least partially placed in the first accommodating cavity, and configured to adjust an opening degree of the powder outlet;   a funnel, having one end connected to the bucket body and the other end having a powder leakage port, wherein the funnel defines a second accommodating cavity, and the powder outlet and the powder leakage port are both in communication with the second accommodating cavity; and   a scraper, at least partially placed in the second accommodating cavity, connected to the stirring rod, and rotatable around the axis of the stirring rod following rotation of the stirring rod.   
     
     
         2 . The powder bucket of  claim 1 , wherein a radial dimension of the funnel gradually decreases from the end of the funnel connected to the bucket body to the other end of the funnel having the powder leakage port; and a caliber of the powder leakage port is smaller than or equal to a caliber of the powder outlet. 
     
     
         3 . The powder bucket of  claim 1 , wherein the bucket body has a conical structure at one end of the bucket body close to the funnel, the funnel is detachably connected to the bucket body, and the conical structure is at least partially located in the funnel. 
     
     
         4 . The powder bucket of  claim 1 , wherein the scraper extends out of the funnel from the powder leakage port. 
     
     
         5 . The powder bucket of  claim 1 , wherein the scraper comprises a connecting segment and a powder-scraping segment, the connecting segment is connected to the stirring rod, the powder-scraping segment is connected to the connecting segment, and the powder-scraping segment is at least partially adjacent to or in contact with an inner wall of the second accommodating cavity, and is configured to scrape off powder on the inner wall of the second accommodating cavity. 
     
     
         6 . The powder bucket of  claim 5 , wherein the scraper further comprises a fixing segment, and the fixing segment is connected to the connecting segment and/or the powder-scraping segment; and the fixing segment is movably connected to an outer surface of the bucket body close to the powder outlet, or the fixing segment is movably connected to an inner surface of the funnel at one end of the funnel close to the bucket body. 
     
     
         7 . The powder bucket of  claim 6 , further comprising a limiting structure, wherein the limiting structure is disposed on the outer surface of the bucket body close to the powder outlet, and the fixing segment is cooperatively connected to the limiting structure; and
 the limiting structure comprises a circlip and a washer, the circlip is snapped to the outer surface of the bucket body close to the powder outlet, and the fixing segment is wound around the bucket body and located at one side of the circlip away from the powder outlet; and the washer is sleeved on the bucket body and located between the circlip and the fixing segment.   
     
     
         8 . The powder bucket of  claim 5 , wherein an inclination angle of the powder-scraping segment relative to the axis of the stirring rod is equal to an inclination angle of the inner wall of the second accommodating cavity relative to the axis of the stirring rod; and/or
 the powder-scraping segment extends in a spiral with a centerline of the spiral being the axis of the stirring rod.   
     
     
         9 . The powder bucket of  claim 5 , wherein the stirring rod extends out of the bucket body from the powder outlet and extends into the second accommodating cavity; and the scraper is connected to a part of the stirring rod extending out of the bucket body. 
     
     
         10 . The powder bucket of  claim 9 , wherein the stirring rod is movable in an axial direction of the stirring rod; the stirring rod defines a slot in the axial direction of the stirring rod at one end of the stirring rod extending out of the powder outlet, one end of the connecting segment away from the powder-scraping segment extends into the slot, and an inner wall of the slot in the axial direction of the stirring rod is spaced apart from the connecting segment. 
     
     
         11 . The powder bucket of  claim 6 , wherein the fixing segment has one end connected to the connecting segment, and the other end connected to the powder-scraping segment; and the connecting segment is adjacent to the powder-scraping segment, the scraper further comprises a connecting member, and the connecting segment and the powder-scraping segment are connected and fixed to the connecting member. 
     
     
         12 . The powder bucket of  claim 5 , wherein the scraper further comprises a guiding segment, the guiding segment is connected to one end of the powder-scraping segment away from the connecting segment, the guiding segment is located at the powder leakage port, at least a part of the guiding segment extends out of the funnel from the powder leakage port, and the part of the guiding segment extending out of the funnel extends in an axial direction of the stirring rod. 
     
     
         13 . The powder bucket of  claim 1 , further comprising a conduit, wherein the conduit is connected to the funnel, has a central hole in communication with the powder leakage port, and extends in an axial direction of the stirring rod. 
     
     
         14 . The powder bucket of  claim 1 , wherein a communication opening is defined at a connection between the bucket body and the funnel, and the communication opening is used for communicating the second accommodating cavity with the outside. 
     
     
         15 . The powder bucket of  claim 1 , wherein the stirring rod comprises a blocking segment and a powder-outlet segment, the blocking segment is connected to one end of the powder-outlet segment close to the powder leakage port, the blocking segment has a diameter equal to a caliber of the powder outlet, and at least a part of the powder-outlet segment has a radial dimension smaller than the caliber of the powder outlet. 
     
     
         16 . The powder bucket of  claim 15 , wherein an outer circumferential surface of the powder-outlet segment comprises a powder-outlet surface, at least a part of a region of the powder-outlet surface has an angle relative to the axis of the stirring rod, and one end of the powder-outlet surface away from the blocking segment is closer to the axis of the stirring rod than one end of the powder-outlet surface close to the blocking segment. 
     
     
         17 . The powder bucket of  claim 16 , wherein the stirring rod further comprises a main-body segment and an extrusion segment, the main-body segment is connected to one end of the powder-outlet segment away from the blocking segment, the extrusion segment is connected to an end portion of the main-body segment close to the powder-outlet segment or the extrusion segment is connected to the powder-outlet segment, the extrusion segment protrudes from an outer surface of the main-body segment, the extrusion segment has an extrusion surface facing the powder-outlet segment, and the extrusion surface has an angle relative to each of an axial direction of the stirring rod and a circumferential direction of the stirring rod. 
     
     
         18 . The powder bucket of  claim 17 , wherein the extrusion surface further extends to the powder-outlet surface of the powder-outlet segment, and is smoothly connected to the powder-outlet surface, and the extrusion surface has an obtuse angle relative to the powder-outlet surface; and/or
 the extrusion segment is implemented as a plurality of extrusion segments, and the plurality of extrusion segments are arranged at intervals in the axial direction of the stirring rod; and in a direction from the main-body segment to the blocking segment, a radial dimension of the plurality of extrusion segments protruding from the main-body segment decreases gradually, and in a radial direction of the stirring rod, a radial dimension of a part of an extrusion segment that is closest to the blocking segment and protrudes from the main-body segment is not larger than a maximum radial dimension of a part of the powder-outlet segment protruding from the main-body segment.   
     
     
         19 . The powder bucket of  claim 1 , wherein the bucket body further comprises a cover opening, and the cover opening and the powder outlet are located at two ends of the bucket body in an axial direction of the stirring rod, respectively; and the powder bucket further comprises a cover body, an elastic structure, and a butt joint, the cover body covers 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 butt joint is connected to one end of the stirring rod away from the powder outlet;
 the cover body comprises a cover plate and an extension structure, the cover plate covers the cover opening, the extension structure is connected to the cover plate, the extension structure and the cover plate cooperatively define a collapsible chamber, and the elastic structure is accommodated in the collapsible chamber; and   the extension structure protrudes from one side of the cover plate close to the powder outlet, or the extension structure protrudes from one side of the cover plate away from the powder outlet.   
     
     
         20 . A powder dispensing device, comprising a driving device and the powder bucket of  claim 1 , wherein the driving device is configured to drive the stirring rod of the powder bucket to rotate.