CN218571275U

CN218571275U - Powder spreading device

Info

Publication number: CN218571275U
Application number: CN202222603432.4U
Authority: CN
Inventors: 姜兴旺
Original assignee: Zhongshan Haoqi Technology Co ltd
Current assignee: Zhongshan Haoqi Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-07
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a dusting device, which comprises a dusting frame, a conveying device and a powder supply device, wherein the dusting frame is provided with an accommodating cavity with an upward opening along the left and right directions; the conveying device is arranged on the powder scattering frame, a rotary conveying piece of the conveying device is arranged in the accommodating cavity along the left-right direction, the accommodating cavity is divided into annular powder conveying grooves by the rotary conveying piece, and at least one push plate located in the powder conveying grooves is arranged on the outer peripheral wall of the rotary conveying piece; the powder supply device is used for supplying powder to the left end or the right end of the powder conveying groove; the powder conveying groove is provided with a first linear conveying channel and a second linear conveying channel, the bottom wall of the first linear conveying channel is provided with at least one first powder scattering hole, the bottom wall of the second linear conveying channel is provided with at least one second powder scattering hole, and the size of the first powder scattering hole is smaller than that of the second powder scattering hole. The utility model provides a dusting device can reduce the degree of drying requirement to the powder, and the working capacity is stronger.

Description

Powder spreading device

Technical Field

The utility model relates to a dusting technical field, in particular to dusting device.

Background

The powder scattering device is widely applied to industries such as food processing, chemical production, pharmacy and the like, for example, in the food processing industry, the powder scattering device is needed to scatter dry powder to noodles to prevent the noodles from being bonded, and in the heat transfer printing process in the printing industry, the powder scattering device is needed to scatter hot melt powder to the heat transfer printing film printed with patterns. The existing powder spreading device generally comprises a strip-shaped powder spreading groove, one or more powder spreading holes are formed in the bottom wall of the powder spreading groove along the length direction of the powder spreading groove, a push plate or a spiral push rod is arranged in the powder spreading groove, powder is supplied to one end of the powder spreading groove by a hopper in the powder spreading process, then a cylinder pushes the push plate to push powder from one end of the powder spreading groove to the other end of the powder spreading groove, or a motor drives the spiral push rod to rotate so as to push the powder from one end of the powder spreading groove to the other end of the powder spreading groove, and the powder falls from the powder spreading holes in the process. The powder outlet amount of the powder scattering device is related to the size of the powder scattering hole and the humidity of the powder, the larger the powder scattering hole is, the larger the powder outlet amount is, the larger the humidity of the powder is, and the larger the viscosity among the powder is, so that the powder outlet amount is smaller and even the powder is blocked at the powder scattering hole. In the product production process, the powder output of the powder scattering device needs to meet the requirement, the powder output cannot be too large or too small, and the powder is dry when leaving the factory, the powder scattering device is usually designed to be used for scattering the dry powder, namely, the size of the powder scattering hole can meet the requirement of the powder output of the dry powder, however, in the actual production process, the powder in the hopper is easily affected by the external environment to increase the humidity, so that the powder output of the powder scattering device is reduced or even cannot be output, the production requirement cannot be met, and only new dry powder can be selected, therefore, the existing powder scattering device has higher requirement on the drying degree of the powder, the applicable humidity range of the powder is smaller, and the working capacity needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a dusting device can reduce the drying degree requirement to the powder, and the humidity range of the powder that is suitable for is wider, and the operational capability is stronger.

The powder spreading device comprises a powder spreading frame, a conveying device and a powder supply device, wherein the powder spreading frame is provided with an accommodating cavity with an upward opening along the left and right directions; the conveying device is arranged on the powder scattering frame, a rotary conveying piece of the conveying device is arranged in the accommodating cavity along the left-right direction, the accommodating cavity is divided into annular powder conveying grooves by the rotary conveying piece, and at least one push plate positioned in the powder conveying grooves is arranged on the outer peripheral wall of the rotary conveying piece; the powder supply device is used for supplying powder to the left end or the right end of the powder conveying groove; the powder conveying groove is provided with a first linear conveying channel and a second linear conveying channel, the bottom wall of the first linear conveying channel is provided with at least one first powder scattering hole, the bottom wall of the second linear conveying channel is provided with at least one second powder scattering hole, the size of the first powder scattering hole is smaller than that of the second powder scattering hole, and the rotary conveying piece can drive the push plate to push powder from the powder supply device to the first linear conveying channel or the second linear conveying channel.

According to the utility model discloses dusting device has following beneficial effect at least: the size in first dusting hole is less than the size in second dusting hole, the dusting work of dry powder is applicable to in first dusting hole, the dusting work of second dusting hole is applicable to the powder of relative moist powder, in the production process, when supplying the powder drying in the powder device, conveyor's gyration transport piece drives the push pedal and follows the powder and locate to first dusting hole propelling movement with the powder, the powder will be followed first dusting hole and shed, the powder in the powder supply device increases humidity and becomes when relative moist by the external influence, can need not to change the powder, carry a reverse motion through the gyration, drive the push pedal with the powder from supplying powder device to second dusting hole propelling movement, the powder can be followed the second dusting hole and shed this moment, through the aforesaid setting, the utility model provides a powder device can reduce the degree of drying requirement to the powder, the humidity range of the powder that is suitable for can be wider, the working capacity is stronger.

According to the utility model discloses a some embodiments, the push pedal sets up along upper and lower direction, just under the push pedal the lateral wall with distance between the defeated powder groove diapire is less than 1mm.

According to some embodiments of the invention, the push pedal is provided with a plurality of and follows the circumference interval arrangement of gyration transport piece.

According to some embodiments of the utility model, the push pedal is the elastic plate.

According to some embodiments of the utility model, conveyor include motor and two rotate install in hold the synchronizing wheel in chamber, the gyration is carried the piece and is conveyer belt or conveying chain, the gyration is carried a cover and is located two the synchronizing wheel and with synchronizing wheel intermeshing, the motor install in dusting frame is connected rather than one of them synchronizing wheel transmission.

According to some embodiments of the utility model, it is provided with support piece to hold the intracavity, support piece is located the gyration is carried an inboard, support piece can support the gyration is carried an inner wall.

According to some embodiments of the utility model, the powder supply device includes hopper and valve, the hopper is located dusting frame upside, the discharge gate has been seted up to the hopper lower extreme, the discharge gate intercommunication to defeated powder groove one end, the valve set up in the discharge gate, the valve is used for control the discharge gate size.

According to the utility model discloses a some embodiments, first dusting hole sets up to the bar hole that extends the setting along left right direction, the width in first dusting hole is d ₁ The second dusting hole is a strip-shaped hole extending along the left and right directions, and the width of the second dusting hole is d ₂ Wherein d is not less than 0.5mm ₁ ≤1.2mm，1.2mm≤d ₂ ≤2mm。

According to the utility model discloses a some embodiments, first dusting hole is provided with a plurality ofly and along controlling the direction interval arrangement, every first dusting hole's length is L ₁ A first round hole is arranged between every two adjacent first dusting holes, and the diameter of each first round hole is d ₃ The distance between the first round hole and the first dusting hole closest to the first round hole is S ₁ Wherein d3 is more than or equal to 0.5mm<1.2mm，S ₁ ≥8mm，8mm≤L ₁ ≤15mm。

According to some embodiments of the utility model, the second dusting hole is provided with a plurality ofly and along left right direction interval arrangement, every the length of second dusting hole is L ₂ A second round hole is arranged between two adjacent second dusting holes, and the diameter of the second round hole is d ₄ Between the second round hole and the second dusting hole closest to the second round holeIs a distance S ₂ Wherein d is more than or equal to 1.2mm ₄ ≤2mm，S2≥8mm，8mm≤L2≤15mm。

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a top view of a powdering device according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is a schematic view of the powdering device shown in FIG. 1;

fig. 5 is an exploded view of the powdering device shown in fig. 1.

Reference numerals:

the powder scattering device comprises a powder scattering frame 100, an accommodating cavity 110, a powder conveying groove 111, a first linear conveying channel 111a, a second linear conveying channel 111b, a first powder scattering hole 131, a first circular hole 132, a second powder scattering hole 141, a second circular hole 142, a conveying device 200, a rotary conveying piece 210, a push plate 211, a motor 220, a synchronous wheel 230, a powder supply device 300, a hopper 310, a discharge hole 311 and a valve 320.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, the powdering device according to an embodiment of the present invention includes a powdering rack 100, a conveying device 200, and a powder supply device 300, wherein the powdering rack 100 is provided with an accommodating chamber 110 with an upward opening in a left-right direction; the conveying device 200 is mounted on the dusting rack 100, a rotary conveying member 210 of the conveying device 200 is arranged in the accommodating cavity 110 along the left-right direction, the rotary conveying member 210 divides the accommodating cavity 110 into annular powder conveying grooves 111, each powder conveying groove 111 is provided with a first linear conveying channel 111a and a second linear conveying channel 111b, one of the first linear conveying channel 111a and the second linear conveying channel 111b is positioned on the front side of the rotary conveying member 210, the other one of the first linear conveying channel 111a and the second linear conveying channel 111b is positioned on the rear side of the rotary conveying member 210, and the outer peripheral wall of the rotary conveying member 210 is provided with at least one push plate 211 positioned in the powder conveying groove 111; the powder supply device 300 is used for supplying powder to the left end or the right end of the powder conveying groove 111; the bottom wall of the first linear conveying channel 111a is provided with at least one first powder scattering hole 131, the bottom wall of the second linear conveying channel 111b is provided with at least one second powder scattering hole 141, the size of the first powder scattering hole 131 is smaller than that of the second powder scattering hole 141, and the rotary conveying piece 210 can drive the push plate 211 to push powder from the powder supply device 300 to the first linear conveying channel 111a or the second linear conveying channel 111 b.

First dusting hole 131's size is less than the size of second dusting hole 141, first dusting hole 131 is applicable to the dusting work of dry powder, second dusting hole 141 is applicable to the dusting work of relatively moist powder, in the production process, when supplying the powder in the powder device 300 dry, conveyor 200's gyration is carried piece 210 and is driven push pedal 211 with the powder from supplying powder device 300 to the propelling movement of first dusting hole 131, the powder will be followed first dusting hole 131 and shed, the powder in supplying powder device 300 receives external influence to increase humidity and when becoming relatively moist, can need not to change the powder, through gyration carrier 210 reverse motion, drive push pedal 211 with the powder from supplying powder device 300 to second dusting hole propelling movement 141, the powder can spill from second dusting hole 141 this moment, through the aforesaid setting, the utility model provides a dusting device can reduce the degree of drying requirement to the powder, the humidity range of the powder that is suitable for can be wider, can compromise dry powder and the dusting work of moist powder, the working capacity is stronger.

The utility model provides a dusting device has reduced the degree of drying requirement to the powder, correspondingly, has also reduced the degree of drying requirement of the storage requirement of powder, product production environment.

The utility model provides a dusting device can realize carrying out dusting work to the powder of different humidity through the just reversal of gyration transport piece 210, need not to spill powder hole 141 for first scattering powder hole 131 and second and design conveyor 200 respectively, and the structure is retrencied ingenious.

In a specific implementation process, the first powder scattering hole 131 may be a circular hole or a strip-shaped hole, wherein when the first powder scattering hole 131 is a circular hole, the first powder scattering hole 131 is provided with a plurality of holes and is linearly arranged along the left-right direction, and at this time, the size of the first powder scattering hole 131 refers to the diameter of the first powder scattering hole 131; when the first powder scattering hole 131 is a strip-shaped hole, one first powder scattering hole 131 may be provided, and a plurality of first powder scattering holes 131 may also be provided and linearly arranged in the left-right direction, and at this time, the size of the first powder scattering hole 131 refers to the width of the first powder scattering hole 131.

In a specific implementation process, the second powder spreading hole 141 may be a circular hole or a strip-shaped hole, wherein when the second powder spreading hole 141 is a circular hole, the second powder spreading holes 141 are provided with a plurality of holes and are linearly arranged along the left-right direction, and at this time, the size of the second powder spreading hole 141 refers to the diameter of the second powder spreading hole 141; when the second powder spreading holes 141 are strip-shaped holes, one second powder spreading hole 141 may be provided and extend in the left-right direction, and a plurality of second powder spreading holes 141 may be provided and arranged linearly in the left-right direction, in which case, the size of the second powder spreading hole 141 refers to the width of the second powder spreading hole 141.

It should be noted that, the utility model discloses in, dry and humidity are comparatively speaking, in the actual production process, the powder in the hopper 310 receives external environment influence and increases humidity after, the humidity of powder can not increase to the powder caking blocking and the unable degree of using usually, the powder just becomes relative humidity, and because the size that spills the powder hole of current dusting device is to dry powder play powder volume and design, so the powder becomes moist back, will lead to current dusting device to go out the powder volume and become less or even unable play powder.

In the actual production process, a worker can determine whether the powder in the powder supply device 300 is dry or wet according to the hand feeling based on experience, or can determine whether the powder is dry or wet through test dusting, specifically, the dusting device selects the first powder scattering hole 131 to try to perform dusting, if the powder output amount of the first powder scattering hole 131 is insufficient, the powder can be determined to be wet, then the second powder scattering hole 141 is selected to scatter powder in the formal production process, if the powder output amount of the first powder scattering hole 131 meets the production requirement, the powder can be determined to be dry, and then the first powder scattering hole 131 is selected to scatter powder in the formal production process. Foretell two kinds of modes all need not to measure the concrete humidity of powder, convenient production, consequently also need not the utility model discloses a definition powder is moist or dry humidity value.

Of course, in the specific implementation process, it is also possible to determine whether the dusting device selects the first dusting hole 131 or the second dusting hole 141 for dusting operation by measuring the specific humidity of the powder, wherein the humidity value for defining whether the powder is wet or dry can be obtained through a limited number of experiments, and in addition, different types of powder used for different products, different production processes, different powder output amounts, and different humidity values for defining whether the powder is wet or dry are different, so that the humidity for defining whether the powder is wet or dry needs to be determined according to actual conditions, and is not specifically limited herein.

It is conceivable that, in some embodiments, the push plate 211 is disposed along the up-down direction, and the distance between the lower side wall of the push plate 211 and the bottom wall of the powder conveying groove 111 is less than 1mm, so as to avoid that the powder scattering is affected by excessive powder remaining on the bottom wall of the powder conveying groove 111 during the powder pushing process of the push plate 211. In a specific implementation process, the distance between the lower side wall of the push plate 211 and the bottom wall of the powder conveying groove 111 may be 0mm, that is, the lower side wall of the push plate 211 and the bottom wall of the powder conveying groove 111 are in contact with each other, so that powder is not substantially remained on the bottom wall of the powder conveying groove 111 in a powder pushing process.

It is conceivable that, in some embodiments, the push plate 211 is an elastic plate, and the distance between the lower side wall of the push plate 211 and the bottom wall of the powder conveying groove 111 is 0mm, that is, the lower side wall of the push plate 211 and the bottom wall of the powder conveying groove 111 contact with each other, and when the rotary conveying member 210 drives the push plate 211 to move, the push plate 211 is an elastic plate, which can reduce the abrasion of the push plate 211 to the bottom wall of the powder conveying groove 111.

Certainly, in the specific implementation process, the lower side wall of the pushing plate 211 can also be provided with bristles, and the bristles are in contact with the bottom wall of the powder conveying groove 111, so that powder basically cannot remain on the bottom wall of the powder conveying groove 111 in the powder pushing process, and at this time, the distance between the lower side wall of the pushing plate 211 and the bottom wall of the powder conveying groove 111 can be larger than 1mm.

Referring to fig. 1, 4 and 5, it is conceivable that, in some embodiments, the push plates 211 are provided in a plurality and are arranged at intervals along the circumferential direction of the rotary conveying member 210, and in a specific implementation, the plurality of push plates 211 are uniformly arranged along the circumferential direction of the rotary conveying member 210. Through setting up a plurality of push plates 211, can improve the efficiency of carrying the powder to first straight line transfer passage 111a or second straight line transfer passage 111b, in addition, when carrying the powder to first straight line transfer passage 111a or second straight line transfer passage 111b, the gyration is carried piece 210 only need along corresponding direction operation can, need not positive and negative direction round trip movement, conveyor 200 control is simple, moves more smoothly.

Referring to fig. 4 and 5, it is conceivable that, in some embodiments, the conveying device 200 includes a motor 220 and two synchronizing wheels 230 rotatably mounted in the accommodating cavity 110, the rotary conveying member 210 is a conveyor belt or a conveyor chain, the rotary conveying member 210 is sleeved on the two synchronizing wheels 230 and is engaged with the synchronizing wheels 230, and the motor 220 is mounted on the dusting frame 100 and is in transmission connection with one of the synchronizing wheels 230. Through the aforesaid setting, the phenomenon of skidding can not appear between gyration transport piece 210 and the synchronizing wheel 230, avoids the condition that dusting in-process gyration transport piece 210 skidded and leads to unable drive push pedal 211 to carry the powder, makes the utility model provides a dusting device reliability is stronger.

Referring to fig. 1 and 4, it is conceivable that, in some embodiments, a support 120 is disposed in the accommodating chamber 110, the support 120 is located inside the rotary conveying member 210, and the support 120 can support the inner wall of the rotary conveying member 210, so that the inner wall of the rotary conveying member 210 can abut against the support 120 during dusting, thereby preventing the situation that the pushing plate 211 cannot normally push the powder due to too large recess of the rotary conveying member 210 towards the inner side.

Referring to fig. 1, 4 and 5, it is conceivable that, in some embodiments, the powder supply device 300 includes a hopper 310 and a valve 320, the hopper 310 is located on the upper side of the dusting frame 100, a discharge hole 311 is formed at a lower end of the hopper 310, the discharge hole 311 is communicated to one end of the powder conveying groove 111, the valve 320 is disposed at the discharge hole 311, and the valve 320 is used for controlling the size of the discharge hole 311 to control the discharging speed of the hopper 310. In the powder scattering process, after the push plates 211 move from one end of the first linear conveying channel 111a (or the second linear conveying channel 111 b) close to the hopper 310 to the other end thereof by controlling the blanking speed of the hopper 310 and the movement speed of the rotary conveying member 210, the powder pushed by each push plate 211 is scattered, so that the push plates 211 are prevented from pushing the powder to the second conveying channel 111b (or the first conveying channel 111 a).

In one embodiment, the valve 320 may be controlled manually by a worker or automatically by the linear motor 220 or an air cylinder.

Referring to fig. 2, it is conceivable that, in some embodiments, the first powder scattering hole 131 is provided as a bar-shaped hole extending in the left-right direction, and the first powder scattering hole 131 has a width d ₁ The second powder spreading hole 141 is a strip-shaped hole extending in the left-right direction, and the width of the second powder spreading hole 141 is d ₂ Wherein d is not less than 0.5mm ₁ ≤1.2mm，1.2mm≤d ₂ Up to 2mm, so that the first dusting hole 131 may be adapted to dusting dry powders and the second dusting hole 141 may be adapted to dusting relatively wet powders.

Referring to fig. 1 and 2, it is conceivable that the first powder scattering holes 131 are provided in plurality and spaced apart in the left and right direction in some embodiments, and each of the first powder scattering holes 131 has a length L ₁ A first circular hole 132 is formed between two adjacent first powder spreading holes 131, and the diameter of the first circular hole 132 is d ₃ The distance between the first circular hole 132 and the closest first powder spreading hole 131 is S ₁ Wherein d is more than or equal to 0.5mm ₃ <1.2mm，S ₁ ≥8mm，8mm≤L ₁ Less than or equal to 15mm, through the above-mentioned setting, the interval between two adjacent first dusting holes 131 is suitable, and first round hole 132 is used for the transition dusting, so, the dusting in-process, the powder can not be linked into a straight line when spilling and falling on the work piece, and the dusting effect is better, effectively avoids out the too big condition of powder volume, and the dusting is more even.

It should be noted that, in a specific production process, the equipment provided with the powder scattering device is also generally provided with a shaking device, and the shaking device can shake the workpiece so as to uniformly disperse the powder on the workpiece.

Referring to fig. 1 and 3, it is conceivable that the second powder spreading holes 141 are provided in plurality and spaced apart in the left and right direction in some embodiments, and each second powder spreading hole 141 has a length L ₂ A second circular hole 142 is arranged between two adjacent second powder scattering holes 141, and the diameter of the second circular hole 142 is d ₄ The distance between the second circular hole 142 and the nearest second dusting hole 141 is S ₂ Wherein d is more than or equal to 1.2mm ₄ ≤2mm，S ₂ ≥8mm，8mm≤L ₂ Less than or equal to 15mm. Through the setting, the interval between two adjacent second dusting holes 141 is suitable, and second round hole 142 is used for the transition dusting, so, the dusting in-process, the powder can not be linked into a straight line when spilling on the work piece, and the dusting effect is better, effectively avoids the too big condition of meal outlet volume, and the dusting is more even.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The present embodiment has been described in detail with reference to the drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the present invention.

Claims

1. A powdering device, comprising:

a dusting frame (100) which is provided with an accommodating cavity (110) with an upward opening along the left and right direction;

the conveying device (200) is installed on the dusting frame (100), a rotary conveying member (210) of the conveying device (200) is arranged in the accommodating cavity (110) along the left-right direction, the rotary conveying member (210) divides the accommodating cavity (110) into annular powder conveying grooves (111), and at least one push plate (211) located in the powder conveying grooves (111) is arranged on the outer peripheral wall of the rotary conveying member (210);

the powder supply device (300) is used for supplying powder to the left end or the right end of the powder conveying groove (111);

the powder conveying groove (111) is provided with a first linear conveying channel (111 a) and a second linear conveying channel (111 b), the bottom wall of the first linear conveying channel (111 a) is provided with at least one first powder scattering hole (131), the bottom wall of the second linear conveying channel (111 b) is provided with at least one second powder scattering hole (141), the size of the first powder scattering hole (131) is smaller than that of the second powder scattering hole (141), and the rotary conveying piece (210) can drive the push plate (211) to push powder from the powder supply device (300) to the first linear conveying channel (111 a) or the second linear conveying channel (111 b).

2. A powdering device according to claim 1, characterized in that said push plate (211) is arranged in up-down direction and the distance between the lower side wall of said push plate (211) and the bottom wall of said powder-feeding groove (111) is less than 1mm.

3. A powdering device according to claim 1, characterized in that the push plate (211) is provided in plurality and arranged at intervals in the circumferential direction of the rotary transport member (210).

4. A dusting device according to claim 2, characterized in that said push plate (211) is an elastic plate, the lower side wall of said push plate (211) and the bottom wall of said powder conveying groove (111) are in mutual contact.

5. A dusting device according to claim 1, characterized in that said conveying device (200) comprises a motor (220) and two synchronizing wheels (230) rotatably mounted to said containing cavity (110), said rotary conveying member (210) is a conveyor belt or a conveyor chain, said rotary conveying member (210) is sleeved on said two synchronizing wheels (230) and meshed with said synchronizing wheels (230), said motor (220) is mounted to said dusting frame (100) and in transmission connection with one of said synchronizing wheels (230).

6. A powdering device according to claim 5, characterized in that a support (120) is arranged in the receiving chamber (110), said support (120) being located inside the rotary transport member (210), said support (120) being capable of supporting the inner wall of the rotary transport member (210).

7. The dusting device of claim 1, wherein the powder supply device (300) comprises a hopper (310) and a valve (320), the hopper (310) is located at the upper side of the dusting frame (100), the lower end of the hopper (310) is provided with a discharge hole (311), the discharge hole (311) is communicated to one end of the powder conveying groove (111), the valve (320) is arranged at the discharge hole (311), and the valve (320) is used for controlling the size of the discharge hole (311).

8. A powdering device according to any one of claims 1-7, characterised in that the first powder spreading holes (131) are arranged as strip-shaped holes extending in the left-right direction, the width of the first powder spreading holes (131) being d ₁ The second powder spreading hole (141) is a strip-shaped hole extending along the left-right direction, and the width of the second powder spreading hole (141) is d ₂ Wherein d is not less than 0.5mm ₁ ≤1.2mm，1.2mm≤d2≤2mm。

9. A powdering device according to claim 8, characterized in that said first powder scattering holes (131) are provided in plurality and arranged at intervals in the left-right direction, and each of said first powder scattering holes (131) has a length L ₁ A first round hole (132) is arranged between two adjacent first powder spreading holes (131), and the diameter of the first round hole (132) is d ₃ The distance between the first round hole (132) and the first powder spreading hole (131) closest to the first round hole is S ₁ Wherein d3 is more than or equal to 0.5mm<1.2mm，S ₁ ≥8mm，8mm≤L ₁ ≤15mm。

10. A powdering device according to claim 8, wherein said second powder spreading holes (141) are provided in plurality and arranged at intervals in the left-right direction, and each of said second powder spreading holes (141) has a length L ₂ A second round hole (142) is formed between every two adjacent second powder scattering holes (141), and the diameter of each second round hole (142) is d ₄ The distance between the second round hole (142) and the second powder scattering hole (141) which is closest to the round hole is S ₂ Wherein d4 is more than or equal to 1.2mm and less than or equal to 2mm, S2 is more than or equal to 8mm, L2 is more than or equal to 8mm and less than or equal to 15mm.