CN220104260U - Powder weighing device - Google Patents

Abstract

The utility model discloses a powder weighing device, which belongs to the technical field of powder weighing equipment and comprises a plurality of multi-station feeding components, a material weighing mechanism and a dust removing component; the multi-station feeding assemblies are in sealing connection and communication with the air inlet ends of the dust removing assemblies, and the bottoms of the air inlet ends of the dust removing assemblies are in sealing connection and communication with the tops of the material weighing mechanisms. By the mode, powder is prevented from splashing in the weighing process, a better sealing environment is provided for powder weighing, and the working environment is prevented from being polluted by the powder; the powder quality in the weighing assembly is effectively controlled, accurate quantitative mixing of various powder is realized, meanwhile, the weighed powder in the weighing assembly can be quickly conveyed out, the transportation efficiency is greatly improved, and the labor cost is saved; the powder quality collected in the collecting barrel is displayed rapidly and accurately through the electronic scale, and the powder can be discharged rapidly, so that the discharging efficiency is improved, and a lot of labor cost is saved.

Description

Powder weighing device

Technical Field

The utility model relates to the technical field of powder weighing equipment, in particular to a powder weighing device.

Background

In the current industrial production, the weighing of the powder is an extremely important link, and the method provides convenience for the proportional mixing of materials, and realizes the automatic simple operation of obtaining quantitative powder.

There are many powder weighing devices in the market at present, for example, chinese patent CN202223200076.8 discloses a fine powder metering and weighing device, the device can carry out ejection of compact weighing with powder storage jar body in, jar body below, and the powder of jar body directly falls into in the collection fill, and weighing mechanism weighs the powder in the collection fill, after weighing, opens the valve of collection fill lower extreme row material pipe, and the powder after the symmetry is got out.

However, the above patent has problems: firstly, the types of powder are various, different types of powder need to be mixed quantitatively, and the patent cannot realize quantitative mixing of different powders; secondly, the powder is easy to splash into the air in the falling process, so that the environment is polluted, and the patent does not provide a good sealing environment; thirdly, the powder collected after weighing cannot be carried out by the device, and labor can not be fully saved.

Based on the above, the present utility model provides a powder weighing device to solve the above problems.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a powder weighing device.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

a powder weighing device comprises a plurality of multi-station feeding components, a material weighing mechanism and a dust removing component;

the multi-station feeding assemblies are in sealing connection and communication with the air inlet end of the dust removing assembly, and the bottom of the air inlet end of the dust removing assembly is in sealing connection and communication with the top of the material weighing mechanism;

the multi-station feeding assembly comprises a storage box, a fixing frame, a driving motor, a packing auger and a conveying pipe; the bottom of the fixing frame is fixedly arranged at the upper end of the arc-shaped supporting frame, the top of the fixing frame is fixedly connected with the bottom of the storage box and the lower end of the conveying pipe respectively, the discharge end of the storage box is fixedly connected with the conveying pipe, the outer end of the conveying pipe is plugged, the outer end of the conveying pipe is fixedly connected with a driving motor, the driving end of the driving motor is fixedly connected with one end of the auger, the auger is positioned inside the conveying pipe, and the bottom of the storage box is communicated with the upper part of the outer end of the conveying pipe; the feeding end of the conveying pipe passes through the dust removing component and is communicated with the dust removing component;

the material weighing mechanism comprises a weighing assembly and a discharging assembly; the driving end of the discharging component is connected with a weighing component, and the upper end of the weighing component is in contact connection with the lower end of the dust removing component.

Furthermore, the fixing frames of the three multi-station feeding assemblies are fixedly connected to the upper ends of the arc-shaped supporting frames at equal intervals.

Further, the dust removing component comprises a dust removing cover, a round baffle, a dust removing pipe, a discharge hole and a dust removing box body; the dust removal box body is fixedly arranged on the workbench, the discharge hole is positioned at the lower end of the dust removal box body, one end of the dust removal pipe is fixedly arranged at the upper end of the dust removal box body, the other end of the dust removal pipe is fixedly connected with the upper end of the dust removal cover, the upper end of the round baffle is fixedly arranged at the lower end of the dust removal cover, the lower end of the round baffle is in contact connection with the material weighing mechanism, the discharge end of the conveying pipe penetrates through the round baffle and is positioned inside the round baffle, and the discharge end of the conveying pipe is positioned between the dust removal cover and the material weighing mechanism.

Further, the upper end of the weighing assembly is in contact connection with the lower end of the circular baffle.

Further, the weighing assembly comprises an electronic scale, a collecting barrel and a limiting assembly; the electronic scale is fixedly arranged at the driving end of the discharging component, the limiting component is fixedly arranged at the pressure measuring end of the electronic scale, the bottom end of the collecting barrel is fixedly connected with the limiting component, and the limiting component is positioned between the collecting barrel and the electronic scale; the top of the collecting barrel is abutted with the bottom annular plate of the circular baffle plate.

Further, the limiting assembly comprises an air cylinder, a limiting support column, a limiting column, a moving plate and a support plate; the lower end of the limiting support column is fixedly connected with the pressure measuring end of the electronic scale, the upper end of the limiting support column is fixedly connected with the bottom end of the support plate, the upper end of the support plate is in contact connection with the bottom end of the collecting barrel, the cylinder is fixedly connected to the pressure measuring end of the electronic scale, the telescopic rod of the cylinder is fixedly connected with the moving plate, the upper end of the moving plate is fixedly provided with a plurality of limiting columns, the support plate is provided with a plurality of through holes, and the plurality of limiting columns are respectively in sliding connection with the corresponding through holes;

further, when the powder mass is weighed, the upper end of the limiting column is flush with the upper end of the supporting plate, and when the powder is transported out, the upper end of the limiting column passes through the upper end of the supporting plate and the limiting column is contacted with the side edge of the collecting barrel;

furthermore, two nuts are connected to the telescopic rod of the air cylinder of the limiting assembly in a threaded mode, the two nuts are located at the upper end and the lower end of the moving plate respectively, and the moving plate is locked on the telescopic rod of the air cylinder through the two nuts.

Further, the concave groove is formed in the upper end of the supporting plate, and the bottom end of the collecting barrel is embedded into the concave groove in the upper end of the supporting plate.

Further, the discharging assembly comprises a plurality of sliding guide rails, a plurality of fixed blocks, a positive and negative driving motor, a threaded rod, a plurality of guide rail sliding blocks and a base; the left end and the right end of the frame are fixedly provided with fixed blocks, the threaded rods are respectively connected with the fixed blocks in a rotating way, the front and back driving motor is fixedly arranged at one end of the frame, and one end of each threaded rod is fixedly connected with the driving end of the front and back driving motor; the lower end of the base is in threaded connection with the threaded rod, the front end and the rear end of the base are respectively fixedly connected with guide rail sliding blocks, each guide rail sliding block is respectively in sliding connection with the sliding guide rail, the two sliding guide rails are respectively fixedly connected with the front end and the rear end of the frame, and the top of the base is fixedly connected with the lower end of the electronic scale.

Advantageous effects

When powder enters the storage box through a feed inlet at the upper end of the storage box, the driving motor is started, the driving motor drives the auger to rotate, the auger drives the powder to be transported out of the discharge end of the storage box and enter the conveying pipe, and then the powder enters the dust removing assembly from the discharge end of the conveying pipe and then falls into the material weighing mechanism below; when different powders are mixed, the driving motors are started in sequence, so that different powders quantitatively enter a material weighing mechanism for mixing and weighing; the quantitative mixing of various powder is realized by completing the transportation of various powder, thereby not only providing convenience for the industrial production of mixed powder, but also improving the mixing efficiency of the powder;

when the discharge end of the conveying pipe is positioned between the dust hood and the material weighing mechanism, the driving motor is started to rotate, then the dust collection box body is started to collect dust, the dust collection box body collects the powder splashed below the dust collection opening of the dust hood through the dust collection pipe, the absorbed powder passes through the dust hood and enters the dust collection box body through the dust collection pipe, and after the absorbed powder is treated by the dust collection box body, the powder is discharged from the discharge opening at the lower end of the dust collection box body; in the powder weighing process, the powder is prevented from splashing, a better sealing environment is provided for powder weighing, the working environment is prevented from being polluted by the powder, the splashed powder is collected, and a certain cost is reduced;

when the electronic scale is required to be detected, the electronic scale of the weighing assembly of the material weighing mechanism is opened, the discharging end of the conveying pipe continuously conveys powder to the collecting barrel, when the numerical value on the electronic scale reaches a target value, the driving motor is closed, the air cylinder of the limiting assembly is started, the telescopic rod is outwards extended by the air cylinder and drives the nut to move, the nut drives the limiting column to move through the moving plate, and the upper end of the limiting column penetrates through the upper end of the supporting plate and extends to the outer side of the upper end of the supporting plate; when the discharging assembly drives the discharged collecting barrel to the original place, the air cylinder is started, and the telescopic rod of the air cylinder contracts, so that the upper end of the limiting column does not extend to the outer side of the upper end of the supporting plate; when the limiting column is in contact connection with the side end of the collecting barrel, the forward and reverse driving motor is started, the forward and reverse driving motor drives the threaded rod to rotate forward, the threaded rod drives the guide rail sliding block to move rightwards through the base, the base drives the collecting barrel at the upper end of the electronic scale to move rightwards, when the collecting barrel reaches a discharging position, the forward and reverse driving motor is stopped to rotate, after discharging is finished, the forward and reverse driving motor is started to rotate reversely, the collecting barrel moves rightwards, and when the feeding end of the collecting barrel is positioned right below the lower end of the circular baffle, the forward and reverse driving motor is closed to rotate; the powder quality collected in the collecting barrel is displayed rapidly and accurately through the electronic scale, the information acquisition speed is greatly improved, the powder can be discharged rapidly, the discharging efficiency is improved, and a lot of labor cost is saved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a perspective view of a main body structure of a powder weighing apparatus according to the present utility model;

FIG. 2 is a front view of a powder weighing apparatus according to the present utility model;

FIG. 3 is a right side view of a powder weighing apparatus according to the present utility model;

FIG. 4 is a perspective view of a main body of a powder weighing apparatus according to the present utility model;

FIG. 5 is a cross-sectional view taken along the B-B direction of FIG. 2;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is a perspective view of a main body of a powder weighing apparatus according to the present utility model;

fig. 8 is an enlarged view at C in fig. 7.

Reference numerals in the drawings represent respectively:

1. a multi-station feeding assembly; 11. a storage bin; 12. a fixing frame; 13. a driving motor; 14. an auger; 15. a material conveying pipe; 16. an arc-shaped supporting frame; 2. a material weighing mechanism; 21. a weighing assembly; 211. an electronic scale; 212. a collecting barrel; 213. a limit component; 2131. a cylinder; 2132. limiting support columns; 2133. a limit column; 2134. a nut; 2135. a moving plate; 2136. a support plate; 22. a discharge assembly; 221. a sliding guide rail; 222. a fixed block; 223. a forward and reverse driving motor; 224. a threaded rod; 225. a guide rail slide block; 226. a base; 3. a dust removal assembly; 31. a dust hood; 32. a circular baffle; 33. a dust removal pipe; 34. a discharge port; 35. a dust removing box body.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is further described below with reference to examples.

In some embodiments, please refer to fig. 1-8 of the specification, a powder weighing device includes a plurality of multi-station feeding assemblies 1, a material weighing mechanism 2 and a dust removing assembly 3; the multi-station feeding assemblies 1 are in sealing connection and communication with the air inlet ends of the dust removing assemblies 3, and the bottoms of the air inlet ends of the dust removing assemblies 3 are in sealing connection and communication with the tops of the material weighing mechanisms 2;

when powder enters the multi-station feeding assembly 1 through the multi-station feeding assembly 1, a plurality of multi-station feeding assemblies 1 are started to transport different powder above the material weighing mechanism 2, when the powder falls down, the dust removing assembly 3 collects the powder splashed in the falling process of the powder in a concentrated manner, when the powder falls down to the material weighing mechanism 2, the quality of the collected powder is obtained by observing the material weighing mechanism 2, when the powder with a required quantity is collected, the multi-station feeding assembly 1 is stopped to transport, and the material weighing mechanism 2 is started to transfer the collected powder;

the multi-station feeding assemblies 1 realize quantitative mixing of various powders, so that the mixing efficiency of different powders is greatly improved, the dust removing assembly 3 can prevent the powder from splashing, the environment is not polluted by the powder when the powder is weighed, and meanwhile, the material weighing mechanism 2 can quickly transfer the weighed powder, so that the transportation efficiency is greatly improved;

the multi-station feeding assembly 1 comprises a storage box 11, a fixing frame 12, a driving motor 13, an auger 14 and a conveying pipe 15; the bottom of the fixing frame 12 is fixedly arranged at the upper end of the arc-shaped supporting frame 16, the top of the fixing frame 12 is fixedly connected with the bottom of the storage box 11 and the lower end of the conveying pipe 15 respectively, the discharge end of the storage box 11 is fixedly connected with the conveying pipe 15, the outer end of the conveying pipe 15 is plugged, the outer end of the conveying pipe 15 is fixedly connected with the driving motor 13, the driving end of the driving motor 13 is fixedly connected with one end of the auger 14, the auger 14 is positioned inside the conveying pipe 15, and the bottom of the storage box 11 is communicated with the upper part of the outer end of the conveying pipe 15; the feeding end of the conveying pipe 15 passes through the dust removing assembly 3 and is communicated with the dust removing assembly 3;

preferably, the fixing frames 12 of the three multi-station feeding assemblies 1 are fixedly connected to the upper ends of the arc-shaped supporting frames 16 at equal intervals;

when powder enters the storage box 11 through a feed inlet at the upper end of the storage box 11, a driving motor 13 is started, the driving motor 13 drives a packing auger 14 to rotate, the packing auger 14 drives the powder to be transported out of a discharge end of the storage box 11 and enter a conveying pipe 15, and then the powder enters a dust removing assembly 3 from the discharge end of the conveying pipe 15 and then falls into a material weighing mechanism 2 below; when different powders are mixed, the driving motors 13 are started in sequence, so that different powders enter the material weighing mechanism 2 quantitatively for mixing and weighing;

the quantitative mixing of various powder is realized by completing the transportation of various powder, thereby not only providing convenience for the industrial production of mixed powder, but also improving the mixing efficiency of the powder;

the dust removing assembly 3 comprises a dust removing cover 31, a circular baffle 32, a dust removing pipe 33, a discharge hole 34 and a dust removing box body 35; the dust removing box body 35 is fixedly arranged on the workbench, the discharge port 34 is positioned at the lower end of the dust removing box body 35, one end of the dust removing pipe 33 is fixedly arranged at the upper end of the dust removing box body 35, the other end of the dust removing pipe 33 is fixedly connected with the upper end of the dust removing cover 31, the upper end of the round baffle 32 is fixedly arranged at the lower end of the dust removing cover 31, the lower end of the round baffle 32 is in contact connection with the material weighing mechanism 2, the discharge end of the material conveying pipe 15 passes through the round baffle 32 and is positioned in the round baffle 32, and the discharge end of the material conveying pipe 15 is positioned between the dust removing cover 31 and the material weighing mechanism 2;

when the discharge end of the conveying pipe 15 is positioned between the dust hood 31 and the material weighing mechanism 2, the driving motor 13 is started to rotate, then the dust collection box 35 is started to collect dust, the dust collection box 35 collects the powder splashed below the dust collection opening of the dust hood 31 through the dust collection pipe 33, the absorbed powder passes through the dust hood 31 and enters the dust collection box 35 through the dust collection pipe 33, and after the absorbed powder is processed by the dust collection box 35, the powder is discharged from the discharge opening 34 at the lower end of the dust collection box 35;

in the powder weighing process, the powder is prevented from splashing, a better sealing environment is provided for powder weighing, the working environment is prevented from being polluted by the powder, the splashed powder is collected, and a certain cost is reduced;

the material weighing mechanism 2 comprises a weighing assembly 21 and a discharging assembly 22; the driving end of the discharging component 22 is connected with a weighing component 21, and the upper end of the weighing component 21 is in contact connection with the lower end of the circular baffle 32;

when powder falls into the weighing assembly 21 from the multi-station feeding assembly 1, observing the weight change displayed on the weighing assembly 21, and when the numerical value displayed on the weighing assembly 21 is the powder with the required quantity, closing the driving motor 13 to rotate, and starting the discharging assembly 22 to convey the weighed powder in the weighing assembly 21;

the quality of the powder in the weighing assembly 21 is effectively controlled, so that accurate quantitative mixing of various powder is realized, meanwhile, the weighed powder in the weighing assembly 21 can be quickly conveyed out, the transportation efficiency is greatly improved, and the labor cost is saved;

the weighing assembly 21 comprises an electronic scale 211, a collecting barrel 212 and a limiting assembly 213; the electronic scale 211 is fixedly arranged at the driving end of the discharging component 22, the limiting component 213 is fixedly arranged at the pressure measuring end of the electronic scale 211, the bottom end of the collecting barrel 212 is fixedly connected with the limiting component 213, and the limiting component 213 is positioned between the collecting barrel 212 and the electronic scale 211; the top of the collection tub 212 is abutted with the bottom annular plate of the circular baffle 32;

in some embodiments, as shown in fig. 1-8, the limit assembly 213 includes a cylinder 2131, a limit post 2132, a limit post 2133, a moving plate 2135, and a support plate 2136; the lower end of the limiting support column 2132 is fixedly connected with the pressure measuring end of the electronic scale 211, the upper end of the limiting support column 2132 is fixedly connected with the bottom end of the supporting plate 2136, the upper end of the supporting plate 2136 is in contact connection with the bottom end of the collecting barrel 212, the air cylinder 2131 is fixedly connected with the pressure measuring end of the electronic scale 211, the telescopic rod of the air cylinder 2131 is fixedly connected with the moving plate 2135, the upper end of the moving plate 2135 is fixedly provided with a plurality of limiting columns 2133, the supporting plate 2136 is provided with a plurality of through holes, the plurality of limiting columns 2133 are respectively in sliding connection with the corresponding through holes, when the powder mass is weighed, the upper end of the limiting columns 2133 is flush with the upper end of the supporting plate 2136, and when the powder is transported out, the upper end of the limiting columns 2133 passes through the upper end of the supporting plate 2136 and is in contact with the side edge of the collecting barrel 212;

preferably, two nuts 2134 are screwed on the telescopic rod of the air cylinder 2131 of the limiting assembly 213, the two nuts 2134 are respectively positioned at the upper end and the lower end of the moving plate 2135, and the two nuts 2134 fixedly lock the moving plate 2135 on the telescopic rod of the air cylinder 2131;

when detection is needed, the electronic scale 211 of the weighing assembly 21 of the material weighing mechanism 2 is opened, the discharging end of the material conveying pipe 15 continuously conveys powder to the collecting barrel 212, when the numerical value on the electronic scale 211 reaches a target value, the driving motor 13 is closed, the air cylinder 2131 of the limiting assembly 213 is started, the air cylinder 2131 extends the telescopic rod outwards and drives the moving plate 2135 locked by the nut 2134 to move, the moving plate 2135 drives the limiting post 2133 to move, and the upper end of the limiting post 2133 passes through the supporting plate 2136 and extends to the upper part of the supporting plate 2136; when the upper end of the limiting post 2133 contacts with the side edge of the collecting barrel 212, the limiting post 2133 limits the collecting barrel 212, so that the collecting barrel 212 is prevented from toppling when moving; then the weighing assembly 21 is driven to move to a discharging position by the discharging assembly 22 to discharge, and when the discharging assembly 22 is started to reset the discharged collecting barrel 212 to the weighing position, the air cylinder 2131 is started, and the telescopic rod of the air cylinder 2131 is contracted, so that the upper end of the limiting post 2133 releases the limiting effect on the collecting barrel 212;

the powder quality collected in the collecting barrel 212 is rapidly and accurately displayed through the electronic scale 211, so that the information acquisition speed is greatly improved;

in some embodiments, as shown in fig. 1-8, the outfeed assembly 22 includes a plurality of slide rails 221, a plurality of fixed blocks 222, a forward and reverse drive motor 223, a threaded rod 224, a plurality of rail blocks 225, and a base 226; the left end and the right end of the frame are fixedly provided with fixed blocks 222, a threaded rod 224 is respectively and rotatably connected with the fixed blocks 222, a forward and reverse driving motor 223 is fixedly arranged at one end of the frame, and one end of the threaded rod 224 is fixedly connected with the driving end of the forward and reverse driving motor 223; the lower end of the base 226 is in threaded connection with the threaded rod 224, the front end and the rear end of the base 226 are respectively and fixedly connected with the guide rail slide blocks 225, each guide rail slide block 225 is respectively and slidably connected with the sliding guide rail 221, the two sliding guide rails 221 are respectively and fixedly connected with the front end and the rear end of the frame, and the top of the base 226 is fixedly connected with the lower end of the electronic scale 211;

when the limit post 2133 is in contact connection with the side end of the collecting barrel 212, the forward rotation of the forward and reverse driving motor 223 is started, the forward and reverse driving motor 223 drives the threaded rod 224 to rotate forward, the threaded rod 224 drives the guide rail slide block 225 to move rightwards through the base 226, the base 226 drives the collecting barrel 212 at the upper end of the electronic scale 211 to move rightwards, when the collecting barrel 212 reaches a discharging position, the forward and reverse driving motor 223 is stopped, after the discharging is finished, the forward and reverse driving motor 223 is started, the collecting barrel 212 moves rightwards, and when the feeding end of the collecting barrel 212 is positioned right below the lower end of the circular baffle 32, the forward and reverse driving motor 223 is turned off;

the powder can be rapidly discharged, the discharging efficiency is improved, and a lot of labor cost is saved;

the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The utility model provides a powder weighing device, includes a plurality of multistation material loading subassembly (1), material weighing mechanism (2) and dust removal subassembly (3), its characterized in that:

the multi-station feeding assemblies (1) are in sealing connection and communication with the air inlet ends of the dust removing assemblies (3), and the bottoms of the air inlet ends of the dust removing assemblies (3) are in sealing connection and communication with the tops of the material weighing mechanisms (2);

the multi-station feeding assembly (1) comprises a storage box (11), a fixing frame (12), a driving motor (13), a packing auger (14) and a conveying pipe (15); the bottom of the fixing frame (12) is fixedly arranged at the upper end of the arc-shaped supporting frame (16), the top of the fixing frame (12) is fixedly connected with the bottom of the storage box (11) and the lower end of the conveying pipe (15) respectively, the discharge end of the storage box (11) is fixedly connected with the conveying pipe (15), the outer end of the conveying pipe (15) is blocked, the outer end of the conveying pipe (15) is fixedly connected with the driving motor (13), the driving end of the driving motor (13) is fixedly connected with one end of the auger (14), the auger (14) is positioned inside the conveying pipe (15), and the bottom of the storage box (11) is communicated with the upper part of the outer end of the conveying pipe (15); the feeding end of the conveying pipe (15) passes through the dust removing component (3) and is communicated with the dust removing component (3);

the material weighing mechanism (2) comprises a weighing assembly (21) and a discharging assembly (22); the driving end of the discharging component (22) is connected with a weighing component (21), and the upper end of the weighing component (21) is in contact connection with the lower end of the dust removing component (3).

2. The powder weighing device according to claim 1, characterized in that the fixing frames (12) of the three multi-station feeding assemblies (1) are fixedly connected to the upper ends of the arc-shaped supporting frames (16) at equal intervals.

3. Powder weighing device according to claim 2, characterized in that the dust removal assembly (3) comprises a dust hood (31), a circular baffle (32), a dust removal pipe (33), a discharge port (34) and a dust removal box (35); the dust removal box body (35) is fixedly mounted on the workbench, the discharge port (34) is located at the lower end of the dust removal box body (35), one end of the dust removal pipe (33) is fixedly mounted at the upper end of the dust removal box body (35), the other end of the dust removal pipe (33) is fixedly connected with the upper end of the dust removal cover (31), the upper end of the round baffle (32) is fixedly mounted at the lower end of the dust removal cover (31), the lower end of the round baffle (32) is in contact connection with the material weighing mechanism (2), the discharge end of the conveying pipe (15) penetrates the round baffle (32) and is located inside the round baffle (32), and the discharge end of the conveying pipe (15) is located between the dust removal cover (31) and the material weighing mechanism (2).

4. A powder weighing apparatus according to claim 3, characterized in that the upper end of the weighing assembly (21) is in contact with the lower end of the circular baffle (32).

5. The powder weighing apparatus of claim 4, wherein the weighing assembly (21) comprises an electronic scale (211), a collection bucket (212) and a limiting assembly (213); the electronic scale (211) is fixedly arranged at the driving end of the discharging assembly (22), the limiting assembly (213) is fixedly arranged at the pressure measuring end of the electronic scale (211), the bottom end of the collecting barrel (212) is fixedly connected with the limiting assembly (213), and the limiting assembly (213) is positioned between the collecting barrel (212) and the electronic scale (211); the top of the collecting barrel (212) is abutted with the bottom annular plate of the circular baffle plate (32).

6. The powder weighing apparatus of claim 5, wherein the limit assembly (213) comprises a cylinder (2131), a limit post (2132), a limit post (2133), a moving plate (2135), and a support plate (2136); the utility model discloses a pressure measuring device, including electronic scale (211), pressure measuring support column (2132), support plate (2136), cylinder (2131), fixed connection movable plate (2135) on the telescopic link of cylinder (2131), movable plate (2135) upper end fixed mounting has a plurality of spacing post (2133), a plurality of through-hole has been seted up on support plate (2136) and the bottom fixed connection of backup pad (2136), the upper end of backup pad (2136) is connected with the bottom contact of collecting vessel (212), cylinder (2131) fixed connection is on the pressure measuring end of electronic scale (211), fixed mounting has a plurality of spacing post (2133) on the telescopic link, and a plurality of through-hole has been seted up on backup pad (2136) respectively with corresponding through-hole sliding connection.

7. The powder weighing apparatus according to claim 6, wherein an upper end of the stopper post (2133) is flush with an upper end of the support plate (2136) when weighing the powder mass, the upper end of the stopper post (2133) passes through the upper end of the support plate (2136) when transporting the powder, and the stopper post (2133) contacts a side of the collecting vessel (212).

8. The powder weighing device according to claim 7, characterized in that two nuts (2134) are screwed on the telescopic rod of the air cylinder (2131) of the limiting assembly (213), the two nuts (2134) are respectively located at the upper end and the lower end of the moving plate (2135), and the two nuts (2134) lock the moving plate (2135) on the telescopic rod of the air cylinder (2131).

9. The powder weighing device according to claim 8, characterized in that the upper end of the support plate (2136) is provided with a concave groove, and the bottom end of the collecting barrel (212) is embedded in the concave groove at the upper end of the support plate (2136).

10. The powder weighing apparatus of claim 9, wherein the outfeed assembly (22) comprises a plurality of slide rails (221), a plurality of fixed blocks (222), a forward and reverse drive motor (223), a threaded rod (224), a plurality of rail blocks (225), and a base (226); the left end and the right end of the frame are fixedly provided with fixed blocks (222), threaded rods (224) are respectively connected with the fixed blocks (222) in a rotating mode, a positive and negative driving motor (223) is fixedly arranged at one end of the frame, and one end of each threaded rod (224) is fixedly connected with the driving end of the positive and negative driving motor (223); the lower extreme and threaded rod (224) threaded connection of base (226), both ends are fixedly connected with guide rail slider (225) respectively around base (226), each guide rail slider (225) respectively with sliding guide (221) sliding connection, two sliding guide (221) are fixed connection respectively at the frame front and back end, base (226) top and electronic scale (211) lower extreme fixed connection.