CN212243898U - Powder dispensing device - Google Patents

Abstract

The utility model provides a powder distributor, including storage bottle, rotatory screw rod, annular ration storehouse and branch stub bar, rotatory screw rod wears to locate in the storage bottle and promotes the powder and flow toward the ejection of compact opening of storage bottle bottom, has connecting hole and ejection of compact partial shipment hole on the annular ration storehouse, has the holding chamber in the annular ration storehouse, and connecting hole and ejection of compact partial shipment hole all link up to the holding chamber from the outer fringe of annular ration storehouse, and connecting hole and ejection of compact partial shipment hole are located the upper and lower both sides in holding chamber respectively, and the bottom fixed connection of storage bottle is in the connecting hole; the material distributing head is rotatably arranged in the accommodating cavity, and a plurality of radial inward recesses which are enclosed with the inner edge of the annular quantitative bin to form the quantitative powder accommodating bin are circumferentially arranged on the outer edge of the material distributing head at intervals; when each radial inner recess rotates to face the connecting hole, the powder flowing from the discharging opening is contained and received below the discharging opening; when each radial indent rotates to towards ejection of compact partial shipment hole, be located ejection of compact partial shipment hole's top so that the powder falls to ejection of compact partial shipment hole.

Description

Powder dispensing device

Technical Field

The utility model relates to a powder filling equipment technical field specifically relates to a powder distributor.

Background

In the fields of medicine, food and the like, powder substances are frequently required to be distributed, such as catalytic reaction powder, capsule filling, salt, sugar powder addition and the like. Particularly for powder materials which are hazardous to humans and where metered dispensing is required. On the premise of mass filling production, the requirement of filling consistency is emphasized, and high-efficiency production is emphasized.

At present, some powder dispensing devices are equipped with balances in order to guarantee precision, but since such balances are expensive, they have limitations; still other powder dispensing devices, which are not closed due to their construction, allow air to come into contact with the powder, causing moisture absorption, which is particularly evident in relatively humid environments.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems in the prior art, the present invention provides a powder dispensing device.

The utility model discloses a powder distributor, including storage bottle and rotatory screw rod, the bottom of storage bottle has the discharge opening, rotatory screw rod wear to locate promote powder to flow toward the discharge opening in the storage bottle, powder distributor still includes annular ration storehouse and divides the stub bar; the annular quantitative bin is provided with a connecting hole and a discharging split charging hole, the annular quantitative bin is internally provided with an accommodating cavity, the connecting hole and the discharging split charging hole are communicated to the accommodating cavity from the outer edge of the annular quantitative bin, the connecting hole and the discharging split charging hole are respectively positioned at the upper side and the lower side of the accommodating cavity, and the bottom of the storage bottle is fixedly connected in the connecting hole; the material distributing head is rotatably arranged in the accommodating cavity, a plurality of radial inner recesses are circumferentially arranged on the outer edge of the material distributing head at intervals, and each radial inner recess and the inner edge of the annular quantitative bin enclose to form a quantitative powder accommodating bin; when each radial concave part rotates to face the connecting hole, powder flowing from the discharging opening is contained and received below the discharging opening; each radial indent rotates to orientation when the ejection of compact partial shipment hole, is located ejection of compact partial shipment hole's top is so that the powder falls extremely ejection of compact partial shipment hole.

Illustratively, the connection hole includes an upper connection hole and a lower connection hole, and the diameter of the upper connection hole is larger than that of the lower connection hole, so that the connection hole is a stepped hole with a large top and a small bottom.

Illustratively, the projection area of the lower connecting hole on the outer edge surface of the material distributing head is larger than the projection area of the radial inner recess on the outer edge surface of the material distributing head.

Illustratively, ejection of compact partial shipment hole includes upper portion partial shipment hole and lower part partial shipment hole, the diameter in upper portion partial shipment hole is less than the diameter in lower part partial shipment hole makes ejection of compact partial shipment hole is big end down's step hole.

Illustratively, the projected area of the upper part split charging hole on the outer edge surface of the material distributing head is larger than the projected area of the radial inner concave on the outer edge surface of the material distributing head.

Illustratively, the lower part partial shipment hole is connected with the partial shipment pipe, the one end that the partial shipment pipe kept away from the ejection of compact partial shipment hole is the shape of closing up.

Exemplarily, one end of the distributing head is connected with a radial inward-concave position indicator extending out of the annular quantitative bin, the radial inward-concave position indicator comprises a plurality of optical coupling blocking pieces and a photoelectric sensor, the plurality of optical coupling blocking pieces are fixedly connected with the distributing head, and the plurality of optical coupling blocking pieces correspond to the plurality of radial inward concavities one to one; the photoelectric sensor is fixed on the annular quantitative bin; the photoelectric sensor is provided with an induction groove, and each optical coupling separation blade rotates along with the material distributing head relative to the induction groove.

Exemplarily, the storage bottle comprises a first bottle body, a second bottle body and a third bottle body, the cross-sectional area of the first bottle body is larger than that of the third bottle body, the second bottle body is located between the first bottle body and the third bottle body, the second bottle body is in a circular truncated cone shape, and the discharge opening is arranged at the bottom of the third bottle body.

Illustratively, the rotary screw has a shaft section extending into the second cylinder, and a spiral groove extends on the outer edge of the shaft section.

Exemplarily, be provided with the sealing washer between the outer fringe of branch stub bar and the inner edge of annular ration storehouse, the sealing washer is at least two, in the axial direction of branch stub bar, at least two the sealing washer divide into two sets ofly, two sets of the sealing washer is located respectively the left and right both sides of radial indent.

The utility model discloses a rotatory screw rod promotes the powder, and form quantitative powder holding storehouse through the cooperation of the radial indent on the branch stub bar and the inner edge of annular ration storehouse, furthermore, because the holding chamber has in the annular ration storehouse, have connecting hole and the ejection of compact partial shipment hole that is located the upper and lower both sides in holding chamber respectively on the annular ration storehouse, it rotates to the pan feeding position towards the connecting hole to drive the radial indent when dividing the stub bar to rotate, the powder that flows from ejection of compact opening is connect in the ejection of compact opening below of storage bottle, then, radial indent rotates to the ejection of compact position towards ejection of compact partial shipment hole, be located ejection of compact partial shipment hole directly over, so that the powder falls to ejection of compact partial shipment hole naturally, thereby can carry out powder filling in succession quantitatively; the quantitative split charging can be realized only through the rotating radial inward recess without additionally arranging a high-precision balance; and moreover, the annular quantitative bin is arranged, so that the powder can only be discharged from the discharge split charging hole to be filled, the outlet is sealed, the powder and the air are effectively isolated, and the powder moisture absorption can be avoided.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention. In the drawings, like reference numbers generally represent like parts or steps.

Fig. 1 is a perspective view of a powder dispensing apparatus according to an embodiment of the present invention;

fig. 2 is an assembly view of a powder dispensing apparatus according to an embodiment of the invention;

fig. 3 is an exploded view of a powder dispensing apparatus according to an embodiment of the invention;

fig. 4 is an internal structural view of a powder dispensing apparatus according to an embodiment of the present invention;

FIG. 5 is a perspective view of the dispensing head of FIG. 3;

fig. 6 is a block diagram of the annular dosing chamber of fig. 3.

Wherein the reference symbols are

10-storage bottle

11-first bottle

12-second bottle

13-third bottle

101-discharge opening

102-feed opening

20-rotating screw

21-shaft segment

211-helical groove

22-drive member connection section

23-helical section of stirring

30-distributing head

301-center hole

31-radial concavity

311-open mouth

321-first groove

322-second recess

31' -quantitative powder bin

340-sealing ring

341 first seal ring

342-second seal ring

40-ring shaped quantitative bin

401-end face

41-connecting hole

411-upper connecting hole

412-lower connecting hole

42-discharging split charging hole

421-upper part split charging hole

422-lower part split charging hole

43-accommodation chamber

50-end cap

60 drive element

61-output shaft

70-cover body

80-indicator for radial concave position

81-optical coupling baffle

82-photoelectric inductor

821-Induction tank

83-connecting shaft

84-connecting seat

90-split charging tube

91-powder channel

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the present invention and are not intended to limit the invention to the particular embodiments described herein. Based on the embodiments of the present invention described in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the powder dispensing apparatus includes a storage bottle 10, a rotary screw 20, a dispensing head 30, and an annular dosing bin 40.

The storage bottle 10 is used for storing powder, the storage bottle 10 has a discharge opening 101, and it should be understood that the storage bottle 10 further has a feed opening 102, the discharge opening 101 is communicated with the feed opening 102, for example, the feed opening 102 is located at the top of the storage bottle 10, and the discharge opening 101 is located at the bottom of the storage bottle 10.

As an exemplary embodiment, the storage bottle 10 includes a first bottle 11, a second bottle 12 and a third bottle 13, the cross-sectional area of the first bottle 11 is larger than that of the third bottle 13, the second bottle 12 is located between the first bottle 11 and the third bottle 13, and the second bottle 12 is in a truncated cone shape, so that a throat can be formed at the lower part of the storage bottle 10 to facilitate the powder falling. The discharge opening 101 is disposed at the bottom of the third bottle body 13, and the feeding opening 102 is disposed at an end of the first bottle body 11 away from the second bottle body, in the embodiment shown in the figure, the feeding opening 102 is located at the top of the first bottle body 11, so that the powder can be conveniently supplemented, and the powder can be conveniently and rapidly pushed to the discharge opening 101.

Further, the first bottle 11 is connected with a cover 70 for closing the feeding opening 102, so as to prevent external impurities from contaminating the powder in the storage bottle 10.

Rotatory screw rod 20 wears to locate and promotes the powder and flow toward ejection of compact opening 101 in the storage bottle 10, and rotatory screw rod 20 not only plays the stirring effect to the powder, prevents to become arched effect, can also impel the powder, makes the powder flow toward ejection of compact opening 101.

The rotary screw 20 has a shaft section 21 and a driver attachment section 22 in addition to a stirring screw section 23 which can stir the powder. The stirring screw section 23 is a middle section of the rotating screw 20 and is located in the first bottle body 11. The shaft rod section 21 is a lower section of the rotary screw 20, the lower section extends into the second bottle body 12, a spiral groove 211 extends on the outer edge of the shaft rod section 21, and the spiral groove 211 can prevent large powder from falling into the spiral groove 211 to block the discharging opening 101 below. A driving wheel (not shown) can be connected to the driving member connecting section 22, and the driving wheel is, for example, a gear connected to a motor, and can drive the whole rotating screw 20 to rotate under the driving of the motor; the drive wheel may also be in engagement with a gear on the motor, so that it can be easily removed to replace the entire powder dispensing apparatus. To further facilitate disassembly, the driver attachment section 22 is an upper section of the rotary screw 20 that extends outside the accumulator bottle 10.

Referring to fig. 6, the annular quantitative bin 40 is provided with a connecting hole 41 and a discharging split charging hole 42, the annular quantitative bin 40 is provided with an accommodating cavity 43 therein, the connecting hole 41 and the discharging split charging hole 42 are both communicated with the accommodating cavity 43 from the outer edge of the annular quantitative bin, the connecting hole 41 and the discharging split charging hole 42 are respectively located at the upper side and the lower side of the accommodating cavity 43, and the bottom of the storage bottle 10 is fixedly connected in the connecting hole 41. Specifically, the third bottle body 13 may be tubular, and the tubular third bottle body 13 is fixedly coupled in the coupling hole 41. The annular quantitative bin 40 has a feeding position and a discharging position, specifically, the feeding position corresponds to the position of the connecting hole 41, and the discharging position corresponds to the position of the discharging split charging hole 42. In addition, the inner wall of the annular quantitative bin 40 is smooth, so that the arching can be prevented, and on the other hand, because the material distributing head 30 is rotatably arranged in the accommodating cavity 43, the friction of the material distributing head 30 can be reduced due to the smooth inner wall, and the service life of the material distributing head 30 is prolonged.

Referring to fig. 5, the dispensing head 30 is rotatably disposed in the accommodating cavity 43, and in order to drive the dispensing head 30 to rotate, the dispensing head 30 is connected to an output shaft 61 of a driving member 60 through a central hole 301, where the driving member 60 is, for example, a driving motor. In order to fix the axial position of the material distributing head 30 relative to the annular quantitative bin 40, so that the material distributing head 30 can only rotate circumferentially relative to the annular quantitative bin 40, the material distributing head 30 can be limited in the accommodating cavity 43 to rotate through the end cover 50. A plurality of radial recesses 31 are circumferentially arranged on the outer edge of the distributing head 30 at intervals, each radial recess 31 and the inner edge of the annular quantitative bin 40 enclose to form a quantitative powder accommodating bin 31' (as shown in fig. 4), wherein when each radial recess 31 rotates to face the connecting hole 41 (i.e. the feeding position), the radial recess 31 is positioned below the discharging opening 101 to receive powder flowing from the discharging opening 101; each radial indent 31 is located above the discharge sub-packaging hole 42 when rotated towards the discharge sub-packaging hole 42 (i.e. the discharge position) so that the powder falls down to the discharge sub-packaging hole 42 (wherein, in order to be able to more conveniently blank, each radial indent 31 is preferably located directly above the discharge sub-packaging hole 42 when rotated towards the discharge sub-packaging hole 42). It should be noted that the outer edge of the distributing head 30 refers to a portion of the distributing head 30 away from the center, and the inner edge of the annular quantitative bin 40 refers to a portion of the annular quantitative bin 40 that forms a cavity wall surface of the accommodating cavity 43.

It will be appreciated that the radial recess 31 is open as the radial recess 31 is recessed radially inwardly from the outer edge of the dispensing head 30. For example, the radial recess 31 is generally in the form of an open bowl, so as to be able to contain a measured quantity of powder. The radial recess 31 may also be open hemispherical. The shape of the radial recess 31 is not particularly limited as long as it has an opening and can contain powder. In addition, the volume of the radial recess 31 may be determined according to the powder filling requirement, for example, 10 microliters, 12 microliters, etc. may be set. The number of the radial recesses 31 on the head 30 may also be determined according to actual needs, such as 4, 6, etc., and the number of the radial recesses 31 given in the embodiment of the figure is 4.

The powder filling process of the powder distribution device comprises the following steps: powder with good fluidity is stored in the storage bottle 10, and when powder needs to be filled, the screw 20 is rotated to start, so that the powder is pushed to the discharging opening 101; meanwhile, the distributing head 30 rotates, taking one of the radial recesses 31 as an example, the radial recess 31 rotates to a feeding position for filling, the opening 311 of the radial recess 31 faces upwards, powder flowing from the discharging opening is received below the discharging opening 101, and a certain amount of powder is pre-loaded on the radial recess 31 due to the certain volume of the radial recess 31; with the continuous rotation of the distributing head 30, the radial inner recess 31 loaded with quantitative powder rotates to the open 311 to be enclosed with the inner edge of the annular quantitative bin 40; then, the material distributing head 30 continues to rotate, the radial indent 31 holding a certain amount of powder rotates to the discharging position, and the opening 311 of the radial indent 31 is located right above the discharging sub-packaging hole 42 and faces downwards, so that the powder naturally falls to the discharging sub-packaging hole 42 to add the powder into the target container (i.e. discharging). The filling and discharging processes of the rest of the radial recesses 31 are the same, and the details thereof are not repeated herein.

The powder distributing device pushes powder by rotating the screw rod 20, and forms a quantitative powder containing bin 31' by matching the material distributing head 30 with the annular quantitative bin 40, the material distributing head 30 drives the radial inward recess 31 to rotate to a feeding position facing the connecting hole 41 when rotating, powder flowing from the discharging opening 101 is contained below the discharging opening 101 of the storage bottle, and then the powder is rotated to a discharging position right above the discharging split charging hole 42, so that the powder naturally falls to the discharging split charging hole, and powder filling can be continuously and quantitatively carried out; the quantitative split charging can be realized only through the quantitative powder containing bin without additionally arranging a high-precision balance; moreover, annular ration storehouse sets up for the powder can only be followed ejection of compact partial shipment hole 42 and gone out in order to carry out the filling, has realized that the export seals, effectively keeps apart powder and air, can avoid the powder moisture absorption.

Referring to fig. 2 and 6 in combination, as an exemplary embodiment, the connection hole 41 includes an upper connection hole 411 and a lower connection hole 412, and the diameter of the upper connection hole 411 is larger than that of the lower connection hole 412 so that the connection hole 41 is a stepped hole with a large top and a small bottom. Therefore, the powder filling process is not easy to block, and arching is prevented.

Further, the projected area of the lower connecting hole 412 on the outer edge surface of the distributing head 30 is larger than the projected area of the radial inner recess 31 on the outer edge surface of the distributing head 30. Thus, powder accumulation at the lower connection hole 412 can be prevented.

As an exemplary embodiment, the discharging dispensing hole 42 includes an upper dispensing hole 421 and a lower dispensing hole 422, and the diameter of the upper dispensing hole 421 is smaller than that of the lower dispensing hole 422, so that the discharging dispensing hole 42 is a stepped hole with a small top and a large bottom. Therefore, in the powder filling process, the powder can be ensured to fall smoothly, the blockage is not easy to occur, and the arching is prevented.

Further, the projected area of the upper dispensing hole 421 on the outer edge surface of the dispensing head 30 is larger than the projected area of the radial recess 31 on the outer edge surface of the dispensing head 30. Therefore, in the powder filling process, the powder can be ensured to fall smoothly, and the powder is prevented from being accumulated at the radial inward concave 31.

Further, lower part partial shipment hole 422 is connected with partial shipment pipe 90, and the one end that partial shipment pipe 90 kept away from ejection of compact partial shipment hole 42 is the shape of restrainting, for example, when partial shipment pipe 90 is the pipe, the one end diameter that partial shipment pipe 90 kept away from ejection of compact partial shipment hole 42 reduces gradually, has powder passageway 91 in the partial shipment pipe 90, is the design of restrainting through this powder passageway 91 and the combination one end of keeping away from ejection of compact partial shipment hole 42, can fill the powder that radial indent 31 falls smoothly to the target container in.

Referring to fig. 2 and 3, in an embodiment of the present invention, a radial inward concave position indicator 80 extending outside the annular quantitative bin 40 is connected to one end of the material distributing head 30, and the radial inward concave position indicator 80 is used for indicating the position of the radial inward concave 31 in the annular quantitative bin 40.

Specifically, radial indent position indicator 80 includes a plurality of opto-coupler separation blades 81 and photoelectric sensor 82, a plurality of opto-coupler separation blades 81 and branch stub bar 30 fixed connection, for example, a plurality of opto-coupler separation blades 81 integrated into one piece are in the outer fringe of connecting axle 83, or a plurality of opto-coupler separation blades 81 are connected in the outer fringe of connecting axle 83, and connecting axle 83 passes through connecting seat 84 and divides stub bar 30 coaxial setting. The optical coupling blocking pieces 81 correspond to the radial recesses 31 one by one, and the one-to-one correspondence here means that the number of the optical coupling blocking pieces 81 is equal to the number of the radial recesses 31, and the setting angle of each optical coupling blocking piece 81 in the circumferential direction is equal to the setting angle of each radial recess 31 in the circumferential direction. The photoelectric sensor 82 is fixed on the annular quantitative bin 40, for example, on the end surface 401 of the annular quantitative bin 40, the photoelectric sensor 82 is provided with a sensing groove 821, and each light coupling blocking sheet 81 rotates relative to the sensing groove 821 along with the material distributing head 30.

Exemplarily, when the material distributing head 30 has 4 radial recesses 31, there are 4 corresponding optical coupling blocking pieces 81, and the 4 optical coupling blocking pieces 81 are distributed in a cross shape on the outer edge of the connecting shaft 83, that is, the angle between two adjacent optical coupling blocking pieces 81 is 90 degrees. In an embodiment not shown, when the material distributing head 30 has 6 radial recesses 31, there are 6 light coupling blocking plates 81, and an angle between two adjacent light coupling blocking plates 81 is 60 degrees.

The working process of the radial inward-concave position indicator 80 will be described in detail below by taking the example that the material distributing head 30 has 4 radial inward recesses 31, and the radial inward-concave position indicator 80 has 4 corresponding optical coupling blocking sheets 81: the 4 radial recesses 31 are respectively defined as No. 1 radial recess, No. 2 radial recess, No. 3 radial recess and No. 4 radial recess, and the 4 optocoupler blocking pieces 81 are respectively defined as No. 1 optocoupler blocking piece, No. 2 optocoupler blocking piece, No. 3 optocoupler blocking piece and No. 4 optocoupler blocking piece, wherein the No. 1 optocoupler blocking piece, No. 2 optocoupler blocking piece, No. 3 optocoupler blocking piece and No. 4 optocoupler blocking piece are respectively in one-to-one correspondence with the No. 1 radial recess, No. 2 radial recess, No. 3 radial recess and No. 4 radial recess, when the No. 1 optocoupler blocking piece rotates into the induction groove 821 along with the distributing head 30, the photoelectric sensor 82 sends a signal that the No. 1 radial recess is located at a discharging position, and the No; when the No. 2 optical coupling separation blade rotates into the induction groove 821 along with the distributing head 30, the photoelectric sensor 82 sends a No. 2 radial inward concave position signal, and the No. 2 radial inward concave discharging is carried out; when the No. 3 optical coupling baffle plate rotates into the induction groove 821 along with the distributing head 30, the photoelectric sensor 82 sends a signal that No. 3 is radially inwards concave at the discharging position, and No. 3 is radially inwards concave for discharging; when the No. 4 opto-coupler separation blade rotates into the induction groove 821 along with the distributing head 30, the photoelectric sensor 82 sends a No. 4 radial inwards concave position signal, and the No. 4 radial inwards concave discharge is carried out.

Referring to fig. 2 and 3 in combination, in an embodiment of the present invention, in order to prevent the powder from falling out through the gap, a sealing ring 340 is disposed between the outer edge of the material dividing head 30 and the inner edge of the annular quantitative bin 40, the sealing ring 340 may include two sealing rings, such as a first sealing ring 341 and a second sealing ring 342, in the axial direction of the material dividing head 30, the first sealing ring 341 and the second sealing ring 342 are respectively located on the left side and the right side of the radial indent 31, specifically, referring to fig. 5 in combination, the outer edges on the left side and the right side of the radial indent 31 of the material dividing head 30 are distributed with a first groove 321 and a second groove 322, and the first sealing ring 341 and the second sealing ring 342 are respectively located in the first groove 321 and the second groove 322, so as to avoid the powder from the gap between the outer edge of the material dividing head 30 and the inner edge of the.

In an embodiment not shown, the number of the sealing rings 340 is not limited to two, and may be more than two, and in the axial direction of the material distributing head 30, the two sealing rings are divided into two groups, and the two groups of sealing rings are respectively located at the left and right sides of the radial indent 31.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper", "lower", "inner", "outer", "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A powder distribution device comprises a storage bottle (10) and a rotary screw (20), wherein a discharge opening (101) is formed in the bottom of the storage bottle, the rotary screw is arranged in the storage bottle in a penetrating manner to push powder to flow to the discharge opening, and the powder distribution device is characterized in that: the powder distribution device also comprises an annular quantitative bin (40) and a material distribution head (30);

the annular quantitative bin is provided with a connecting hole (41) and a discharging split charging hole (42), an accommodating cavity (43) is arranged in the annular quantitative bin, the connecting hole and the discharging split charging hole are communicated to the accommodating cavity from the outer edge of the annular quantitative bin, the connecting hole and the discharging split charging hole are respectively positioned at the upper side and the lower side of the accommodating cavity, and the bottom of the storage bottle is fixedly connected in the connecting hole;

the material distributing head is rotatably arranged in the accommodating cavity, a plurality of radial inner recesses (31) are circumferentially arranged on the outer edge of the material distributing head at intervals, and each radial inner recess and the inner edge of the annular quantitative bin enclose to form a quantitative powder accommodating bin;

when each radial concave part rotates to face the connecting hole, powder flowing from the discharging opening is contained and received below the discharging opening; each radial indent rotates to orientation when the ejection of compact partial shipment hole, is located ejection of compact partial shipment hole's top is so that the powder falls extremely ejection of compact partial shipment hole.

2. The powder dispensing apparatus according to claim 1, wherein the connection hole (41) includes an upper connection hole (411) and a lower connection hole (412), and the diameter of the upper connection hole is larger than that of the lower connection hole so that the connection hole is a stepped hole having a large top and a small bottom.

3. Powder dispensing device according to claim 2, wherein the projected area of the lower connecting hole (412) on the outer edge face of the dividing head is larger than the projected area of the radially inner recess on the outer edge face of the dividing head.

4. The powder dispensing apparatus of claim 1, wherein the discharge dispensing hole (42) comprises an upper dispensing hole (421) and a lower dispensing hole (422), and the diameter of the upper dispensing hole is smaller than that of the lower dispensing hole, so that the discharge dispensing hole is a stepped hole with a smaller top and a larger bottom.

5. Powder dispensing device according to claim 4, wherein the projected area of the upper dispensing aperture (421) on the peripheral surface of the dispensing head is larger than the projected area of the radially inner recess on the peripheral surface of the dispensing head.

6. A powder dispensing apparatus as claimed in claim 5, wherein a dispensing tube (90) is connected to the lower dispensing opening (422), the dispensing tube being convergent at an end remote from the outlet dispensing opening.

7. Powder dispensing device according to claim 1, wherein a radially recessed position indicator (80) protruding outside the annular dosing bin is connected to one end of the dispensing head, the radially recessed position indicator (80) comprising:

the optical coupling blocking pieces (81) are fixedly connected with the distributing head (30), and the optical coupling blocking pieces (81) correspond to the radial inner recesses (31) one by one; and

a photosensor (82) fixed to the annular dosing chamber (40);

the photoelectric sensor is provided with an induction groove (821), and each optical coupling blocking piece (81) rotates along with the distributing head (30) relative to the induction groove (821).

8. The powder dispensing apparatus according to any one of claims 1 to 7, wherein the storage bottle comprises a first bottle body (11) having a larger cross-sectional area than a third bottle body (12) and a second bottle body (13) located between the first and third bottle bodies and having a truncated cone shape, and the discharge opening (101) is provided at the bottom of the third bottle body (13).

9. Powder dispensing device according to claim 8, wherein the rotating screw (20) has a shaft section (21) projecting into the second bottle, the outer edge of which extends a helical groove (211).

10. Powder dispensing device according to any one of claims 1-7, wherein at least two sealing rings (340) are arranged between the outer edge of the dispensing head and the inner edge of the annular dosing bin, wherein in the axial direction of the dispensing head the at least two sealing rings are divided into two groups, which are located on the left and right sides of the radial recess (31).

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