CN210504783U

CN210504783U - Feeding device and urea machine

Info

Publication number: CN210504783U
Application number: CN201921242179.6U
Authority: CN
Inventors: 曾威; 黄家峰; 杨春雷; 赵志伟; 张秀峰; 符加园
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-12
Anticipated expiration: 2029-08-01

Abstract

The utility model provides a throw material device and urea machine. The feeding device comprises: a support; the device comprises a material storage part and a weighing sensor, wherein the material storage part is used for storing urea particles and is provided with a discharge hole; the storage part is arranged on the bracket through a weighing sensor so as to weigh the material weight of the urea particles stored in the storage part through the weighing sensor; scrape material portion, scrape material portion and rotatably set up in storage portion, scrape the inner wall extension of at least part orientation storage portion of material portion to scrape the urea granule that material portion rotated and will adhere to on the inner wall of storage portion through the drive and scrape and fall. The technical scheme of the utility model urea granule has solved among the prior art and has adopted the mode of artifical ration to throw the material, has the problem that wastes time and energy, measurement precision and uniformity are poor.

Description

Feeding device and urea machine

Technical Field

The utility model relates to an automobile-used urea solution produces technical field, particularly, relates to a throw material device and urea machine.

Background

In the production process of the automobile urea solution, urea particles and pure water need to be mixed and stirred in a stirring tank, so that the automobile urea solution is formed. In order to make the concentration of the urea solution reach a certain requirement, urea particles and pure water need to be conveyed into the stirring tank according to a certain proportion.

However, in the related art, usually, quantitative urea particles are weighed in a manual weighing mode, and then the weighed urea particles are manually added into the stirring tank, so that the problems of time and labor waste and poor measurement accuracy and consistency exist, and the quality stability of the obtained urea solution is poor.

Therefore, it is necessary to provide a feeding device capable of automatically, stably, reliably and quantitatively feeding urea granules into a stirring tank.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a throw material device and urea machine to the urea granule adopts artifical ration to throw the mode of material and throws the material among the solution prior art, has the problem that wastes time and energy, measurement precision and uniformity are poor.

In order to achieve the above object, according to the utility model discloses an aspect provides a throw material device, include: a support; the device comprises a material storage part and a weighing sensor, wherein the material storage part is used for storing urea particles and is provided with a discharge hole; the storage part is arranged on the bracket through a weighing sensor so as to weigh the material weight of the urea particles stored in the storage part through the weighing sensor; scrape material portion, scrape material portion and rotatably set up in storage portion, scrape the inner wall extension of at least part orientation storage portion of material portion to scrape the urea granule that material portion rotated and will adhere to on the inner wall of storage portion through the drive and scrape and fall.

Further, the scraping part includes: the rotating shaft is pivotally arranged in the material storage part; the stirring rake, a plurality of stirring rakes set up in the pivot along the axial looks interval of pivot, and the blade of each stirring rake all extends towards the inner wall of pivot.

Furthermore, the scraping end surface of the stirring paddle, which is far away from the rotating shaft, and the inner wall of the material storage part are arranged at intervals; wherein the spacing distance between the scraping end face and the inner wall is 5-10 mm.

Further, along the direction of keeping away from the discharge gate, the external diameter of a plurality of stirring rake increases gradually.

Further, the extending direction of the blade is perpendicular to the axis of the rotating shaft.

Further, weighing sensor is a plurality of, and a plurality of weighing sensor set up around the circumference interval of storage portion.

Further, the feeding device also comprises: the discharge pipe is arranged at the discharge port; the valve is arranged on the discharge pipe; the controller is electrically connected with the weighing sensor and is used for acquiring the total weight obtained by weighing by the weighing sensor and calculating the output weight of the urea particles output through the discharge port according to the change of the total weight; the controller is electrically connected with the valve to control the opening and closing of the valve according to the output weight.

Further, the feeding device also comprises: the driving part is arranged on the material storage part and is in driving connection with the material scraping part; the controller is electrically connected with the weighing sensor and is used for acquiring the total weight obtained by weighing by the weighing sensor and calculating the output weight of the urea particles output through the discharge port according to the change of the total weight; the controller is electrically connected with the driving part so as to control the driving part to drive the scraping part to rotate when the output weight is smaller than a preset value.

Further, along the direction from top to bottom, storage portion includes first storage section and second storage section, and first storage section is the column setting, and second storage section is the taper setting, and the point department of second storage section is equipped with the discharge gate.

Further, the support comprises a mounting platform and a plurality of support legs, and the plurality of support legs are connected with the bottom of the mounting platform; wherein, be equipped with the mounting hole on the mounting platform, storage portion wears to establish mounting hole department, and weighing sensor's one end is connected with mounting platform, and weighing sensor's the other end is connected with storage portion.

Further, the feeding device also comprises: the vacuum material sucking mechanism is connected with the discharge hole through a hose; or the screw feeding mechanism is connected with the discharge port through a hose.

According to the utility model discloses a further aspect provides a urea machine, include: a stirring tank; the feeding device is used for quantitatively conveying urea particles into the stirring tank, and is the feeding device; and the water supply device is used for quantitatively supplying pure water to the stirring tank.

Use the technical scheme of the utility model, the weighing sensor who throws the material device can weigh the material weight of the urea granule of storage in the storage portion, and the change of weighing the material weight that obtains through weighing sensor can calculate the output weight through the outside urea granule of export of discharge gate, and when output weight reached predetermined numerical value, the control discharge gate was in the closed condition to the assurance was thrown the material device and can be to carrying quantitative urea granule in the agitator tank. The application provides a weighing sensor sets up in the outside of storage portion, and the assembly of support, weighing sensor and storage portion is convenient more, laborsaving, swift to be favorable to promoting the assembly efficiency of throwing the material device. In addition, because urea particles are easy to absorb moisture and agglomerate, the flowability is poor, and the urea particles attached to the inner wall of the storage part cannot smoothly flow to the discharge hole, so that part of the urea particles stored in the storage part cannot be smoothly conveyed outwards, the conveying efficiency of the urea particles is affected, and the waste of the urea particles is caused. The application provides a throw material device scrapes including scraping material portion, can scrape the urea granule of attaching to on the inner wall of storage portion, and the urea granule that is scraped flows towards discharge gate department to outwards carry through the discharge gate smoothly, and then be favorable to promoting to throw material device's reliability, stability and transport efficiency, avoid causing the waste of the urea granule of attaching to on the inner wall of storage portion.

The application provides a urea machine includes the feeding device that this application provided, and feeding device can add the urea granule in can automatic, reliable and stable, the ration to the agitator tank to can guarantee the urea solution that urea machine production obtained concentration, guarantee the quality of urea solution.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding 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:

fig. 1 shows a schematic structural diagram of a feeding device according to an alternative embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a support; 11. mounting a platform; 12. a support leg; 20. a material storage part; 21. a first storage section; 22. a second storage section; 221. a discharge port; 30. a weighing sensor; 40. a scraping part; 41. a rotating shaft; 42. a stirring paddle; 421. scraping the end face; 50. a discharge pipe; 60. a valve; 70. a drive section.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In order to solve the urea granule among the prior art and adopt the mode of artifical ration to throw the material, have the problem that wastes time and energy, measure precision and uniformity are poor, the utility model provides a throw material device and urea machine.

As shown in fig. 1, the feeding device comprises a bracket 10, a storage part 20, a weighing sensor 30 and a scraping part 40, wherein the storage part 20 is used for storing urea particles, and the storage part 20 is provided with a discharge hole 221; the storage portion 20 is disposed on the bracket 10 by the load cell 30 to weigh the material weight of the urea particles stored in the storage portion 20 by the load cell 30, the scraping portion 40 is rotatably disposed in the storage portion 20, and at least a part of the scraping portion 40 extends toward the inner wall of the storage portion 20 to scrape off the urea particles attached to the inner wall of the storage portion 20 by driving the scraping portion 40 to rotate.

In this embodiment, the weighing sensor 30 of the feeding device can weigh the material weight of the urea particles stored in the storage portion 20, the output weight of the urea particles output through the discharge port 221 can be calculated through the change of the material weight weighed by the weighing sensor 30, and when the output weight reaches a predetermined value, the discharge port 221 is controlled to be in a closed state, so that the feeding device can be ensured to convey quantitative urea particles into the stirring tank. The application provides a weighing sensor 30 sets up in the outside of storage portion 20, and the assembly of support 10, weighing sensor 30 and storage portion 20 is convenient more, laborsaving, swift to be favorable to promoting the assembly efficiency of throwing the material device. In addition, since urea particles are liable to absorb moisture and agglomerate, resulting in poor flowability, the urea particles adhered to the inner wall of the storage portion 20 cannot smoothly flow toward the discharge port 221, and thus, a part of the urea particles stored in the storage portion 20 cannot be smoothly conveyed outward, which affects the conveying efficiency of the urea particles and causes waste of the urea particles. The application provides a throw material device scrapes including scraping material portion 40, can scrape the urea granule of attaching to on the inner wall of storage portion 20, and the urea granule that is scraped flows towards discharge gate 221 department to outwards carry through discharge gate 221 smoothly, and then be favorable to promoting the reliability of throwing the material device, stability and conveying efficiency, avoid causing the waste of the urea granule of attaching to on the inner wall of storage portion 20.

As shown in fig. 1, the scraping portion 40 includes a rotating shaft 41 and a plurality of paddles 42, the rotating shaft 41 is pivotally disposed in the storing portion 20, the plurality of paddles 42 are disposed on the rotating shaft 41 at intervals along an axial direction of the rotating shaft 41, and blades of each of the paddles 42 extend toward an inner wall of the rotating shaft 41. Like this, pivot 41 rotates and drives a plurality of stirring rake 42 synchronous rotation, and the urea granule that will adhere to on the inner wall of storage portion 20 is scraped jointly to the blade of each stirring rake 42, and the urea granule that is scraped is gathered together towards discharge gate 221 department under the stirring effect of each stirring rake 42 and the effect of gravity to guarantee that the material in the storage portion 20 is by make full use of.

It should be noted that the material referred to in this application refers to urea granules located in the stock section 20.

Alternatively, the scraping end surface 421 of the stirring paddle 42 far away from the rotating shaft 41 is arranged at an interval with the inner wall of the storing part 20; wherein, the spacing distance between the scraping end surface 421 and the inner wall is 5 mm-10 mm. Thus, when the distance between the scraping end surface 421 and the inner wall is within the above numerical range, it is ensured that the stirring paddle 42 can reliably rotate, and that the stirring paddle 42 can contact the urea particles attached to the inner wall of the storing portion 20.

As shown in fig. 1, along the direction from top to bottom, the storing portion 20 includes a first storing section 21 and a second storing section 22, the first storing section 21 is arranged in a column shape, the second storing section 22 is arranged in a cone shape, and a discharge hole 221 is arranged at the tip of the second storing section 22. The first material storage section 21 arranged in a columnar shape can store more materials, and the second material storage section 22 arranged in a tapered shape is more convenient for the materials to gather together and flow towards the material outlet 221.

As shown in fig. 1, the discharge port 221 is located at the bottom of the stock portion 20 in the vertical direction; in the horizontal direction, since the discharge hole 221 is located at the center of the storing portion 20, a depression is formed in the center of the material during the falling of the material, the material near the inner circumferential wall of the storing portion 20 is not easy to flow and is easily attached to the inner wall of the storing portion 20, and the diameter of the depression is gradually increased in the direction from bottom to top.

In an alternative embodiment of the present application, in order to better scrape off the material adhered to the inner peripheral wall of the storing portion 20, the outer diameter of the plurality of paddles 42 is gradually increased in a direction away from the discharge port 221, so that the paddles 42 are larger than the size of the recess to be able to contact and scrape off the urea particles in a cost-effective manner.

Alternatively, the outer diameters of some of the paddles 42 in the plurality of paddles 42 are equal.

As shown in fig. 1, the outer diameters of the plurality of paddles 42 located within the first stock section 21 are equal; the outer diameter of the paddles 42 located in the second stock section 22 is smaller than the outer diameter of the paddles 42 located in the first stock section 21.

Alternatively, the paddles 42 are arranged at equal intervals in the axial direction of the shaft 41, so that the processing and assembling of the scraping part 40 are facilitated.

Since the materials are gathered toward the side of the discharging port 221 under the action of gravity, the closer to the discharging port 221, the longer the time for which the materials stay, and the longer the time for which the materials are absent exists in the side of the storing portion 20 away from the discharging port 221, the less the effect of the stirring paddles 42 arranged in the side of the storing portion 20 away from the discharging port 221 is. Therefore, considering the economic cost and the scraping effect of the scraping part 40 together, in an alternative embodiment of the present application, which is not shown in the drawing, the spacing distance between two adjacent stirring paddles 42 is gradually increased along the direction away from the discharge port 221, that is, fewer stirring paddles 42 are arranged on the side of the storing part 20 away from the discharge port 221.

As shown in fig. 1, the extending direction of the blade is perpendicular to the axis of the rotating shaft 41. Simple structure, convenient assembly and low production cost.

Alternatively, the blade is a simple flat plate structure extending in the horizontal direction, i.e., in the radial direction of the rotating shaft 41. When the driving part 70 drives the rotating shaft 41 to rotate, each stirring paddle 42 rotates around the axis of the rotating shaft 41 along with the rotating shaft 41, and a material scraping effect is achieved.

Optionally, the storage portion 20 is a storage tank placed along a vertical direction, the rotating shaft 41 extends along the vertical direction and is located in the storage tank, the blades extend along a horizontal direction, and ends of the blades, which are far away from the rotating shaft 41, are spaced from the inner peripheral wall of the storage tank.

As shown in fig. 1, the load cell 30 is plural, and plural load cells 30 are provided at intervals around the circumference of the magazine 20. By increasing the number of the load cells 30, the stability of the attachment of the magazine 20 to the rack 10 is ensured. Weighing accuracy can also be improved by providing a plurality of load cells 30.

Alternatively, two load cells 30 are provided as a set, and the two load cells 30 are oppositely disposed on both sides of the magazine 20.

Alternatively, a plurality of load cells 30 are evenly distributed around the periphery of the magazine 20.

Alternatively, load cell 30 is a cantilevered load cell.

As shown in fig. 1, the feeding device further includes a discharging pipe 50, a valve 60 and a controller, the discharging pipe 50 is disposed at the discharging port 221, the valve 60 is disposed on the discharging pipe 50, and the controller is electrically connected to the weighing sensor 30 and is configured to obtain a total weight weighed by the weighing sensor 30 and calculate an output weight of the urea particles output through the discharging port 221 according to a change of the total weight; the controller is electrically connected to the valve 60 to control the opening and closing of the valve 60 according to the output weight. Thus, the controller, the valve 60 and the weighing sensor 30 are matched to realize automatic, quantitative and accurate output of urea particles.

It should be noted that the total weight referred to in the present application refers to the total weight of the stock portion 20, the scraping portion 40 provided in the stock portion 20, the urea granules located in the stock portion 20, and other structures provided on the stock portion 20. Since only the amount of change of the urea particles conveyed out through the outlet 221 is changed, the output weight of the urea particles conveyed out through the outlet 221 can be obtained by subtracting the total weight measured first from the total weight measured later.

As shown in fig. 1, the feeding device further includes a driving portion 70 and a controller, the driving portion 70 is disposed on the storage portion 20 and is in driving connection with the scraping portion 40, and the controller is electrically connected to the weighing sensor 30 and is configured to obtain a total weight weighed by the weighing sensor 30 and calculate an output weight of the urea granules output through the discharge port 221 according to a change of the total weight; the controller is electrically connected to the driving part 70 to control the driving part 70 to drive the scraping part 40 to rotate when the output weight is less than a predetermined value. Thus, the controller, the weighing sensor 30 and the driving part 70 are matched to avoid material jamming, so that smooth output of urea particles is ensured, and the output efficiency of the urea particles is ensured.

The total weight referred to in the present application refers to the total weight of the stock portion 20, the scraping portion 40 provided in the stock portion 20, the urea granules provided in the stock portion 20, and the driving portion 70 provided on the stock portion 20.

Alternatively, the driving part 70 is a motor, and an output end of the motor is in driving connection with the rotating shaft 41.

As shown in fig. 1, the stand 10 includes a mounting platform 11 and a plurality of legs 12, the plurality of legs 12 being connected to a bottom of the mounting platform 11; wherein, be equipped with the mounting hole on mounting platform 11, storage portion 20 wears to establish mounting hole department, and weighing sensor 30's one end is connected with mounting platform 11, and weighing sensor 30's the other end is connected with storage portion 20.

Alternatively, the other end of the weighing sensor 30 is connected with the first stock section 21 of the stock portion 20, i.e. the first stock section 21 is arranged through the mounting hole, and the second stock section 22 is located below the mounting platform 11. Because first storage section 21 is the column setting, it is more convenient, stable to be connected between weighing sensor 30 and the first storage section 21.

Optionally, weighing sensor 30's the other end is connected with the second storage section 22 of storage portion 20, because second storage section 22 is the taper setting, can prevent that storage portion 20 from sinking under the effect of gravity to be favorable to guaranteeing the installation stability of storage portion 20.

Optionally, the feeding device further comprises a vacuum suction mechanism, the vacuum suction mechanism is connected with the discharge port 221 through a hose, and the vacuum suction mechanism is used for conveying urea particles to the stirring tank. Because urea granules are easy to damp and agglomerate, and the urea granules have good fluidity in a vacuum environment, the vacuum material sucking mechanism is used for conveying materials, and the condition can be effectively avoided.

Alternatively, the hose is connected to the discharge pipe 50, so that the connection stability between the hose and the discharge pipe 50 and the connection stability between the vacuum suction mechanism and the storage portion 20 can be ensured.

Optionally, the feeding device further comprises a screw feeding mechanism, the screw feeding mechanism is connected with the discharge port 221 through a hose, and the screw feeding mechanism is used for conveying urea particles to the stirring tank. Because urea granule is wet the caking easily, and the screw rod rotates the mobility that can promote urea granule, breaks up the urea granule after caking, consequently utilizes screw rod feed mechanism to carry the material, can avoid this condition to take place effectively.

Alternatively, the hose is connected to the discharge pipe 50, so that the connection stability between the hose and the discharge pipe 50 and the connection stability between the screw feeding mechanism and the storage portion 20 can be ensured.

The application also provides a urea machine, including the agitator tank, throw material device and water supply installation, throw the material device and be used for carrying the urea granule to agitator tank internal ration, throw the material device and be foretell throw the material device, water supply installation is used for carrying the pure water to agitator tank internal ration.

Because the urea machine that this application provided includes the feeding device that this application provided, the feeding device can add the urea granule in can automatic, reliable and stable, the ration to the agitator tank to can guarantee the urea solution that urea machine production obtained concentration, guarantee the quality of urea solution.

The application also provides a feeding method of the urea machine, which comprises the following steps: weighing the material weight of the urea particles stored in the material storage part 20 of the feeding device by using a weighing sensor 30 of the feeding device, and controlling the on-off of a discharge hole 221 of the material storage part 20 according to the change of the material weight so as to quantitatively convey the urea particles into the stirring tank; wherein, the feeding device is the feeding device.

The feeding method provided by the application utilizes the feeding device provided by the application to feed urea particles, and the feeding device can automatically, stably, reliably and quantitatively add urea particles into the stirring tank, so that the concentration of the urea solution obtained by the urea machine production and the quality of the urea solution can be guaranteed.

Optionally, the feeding method further comprises: when the weight change of the material is less than the predetermined speed, the material scraping part 40 of the feeding device is controlled to scrape off the urea particles attached to the inner wall of the material storage part 20 and make the scraped urea particles flow to the material outlet 221, so that the feeding efficiency is improved, and the waste of the urea particles is avoided.

Alternatively, when the upper surface of the material in the storing portion 20 is a plane extending in the horizontal direction, the rotation of the scraping portion 40 is controlled to stop.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the application provides a throw material device can be automatic, reliably, quantitatively outwards carry urea granule. The weighing sensor 30 of the feeding device can accurately weigh the weight of the urea particles output through the discharge port 221 of the storage part 20, and the urea particles can be quantitatively added when the concentration of the urea solution is low, so that the concentration of the urea solution is improved, and the quality of the urea solution is further ensured. The scraping part 40 of the feeding device can improve the fluidity of the urea particles in the storage part 20, and the urea particles in the storage part 20 can be ensured to smoothly flow out through the discharge hole 221 of the storage part 20. The application provides a throw material device has good practicality.

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, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "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 inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

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 above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A feeding device, comprising:

a support (10);

the urea storage device comprises a storage part (20) and a weighing sensor (30), wherein the storage part (20) is used for storing urea particles, and the storage part (20) is provided with a discharge hole (221); the storage part (20) is arranged on the bracket (10) through the weighing sensor (30) so as to weigh the material weight of the urea particles stored in the storage part (20) through the weighing sensor (30);

scraping part (40), scraping part (40) rotatably set up in storing portion (20), scraping part (40) at least part towards the inner wall of storing portion (20) extends to through the drive scrape material part (40) and rotate and will be attached to urea granule on the inner wall of storing portion (20) scrapes off.

2. The charging device according to claim 1, characterized in that the scraper (40) comprises:

a rotating shaft (41), wherein the rotating shaft (41) is pivotally arranged in the storing part (20);

the stirring paddles (42) are arranged on the rotating shaft (41) at intervals along the axial direction of the rotating shaft (41), and blades of each stirring paddle (42) extend towards the inner wall of the rotating shaft (41).

3. The feeding device according to claim 2, characterized in that a scraping end surface (421) of the stirring paddle (42) far away from the rotating shaft (41) is arranged at a distance from the inner wall of the storing part (20); wherein, the spacing distance between the scraping end face (421) and the inner wall is 5 mm-10 mm.

4. The charging device according to claim 2,

the outer diameter of the stirring paddles (42) is gradually increased along the direction far away from the discharge hole (221).

5. The charging device according to claim 2, characterized in that the extension direction of the blades is perpendicular to the axis of the rotating shaft (41).

6. The charging device according to claim 1, characterized in that the load cell (30) is provided in plurality, and a plurality of the load cells (30) are arranged at intervals around the circumference of the magazine portion (20).

7. The charging device according to any one of claims 1 to 6, further comprising:

a discharge pipe (50), wherein the discharge pipe (50) is arranged at the discharge opening (221);

a valve (60), wherein the valve (60) is arranged on the tapping pipe (50);

the controller is electrically connected with the weighing sensor (30) and is used for acquiring the total weight weighed by the weighing sensor (30) and calculating the output weight of the urea particles output through the discharge hole (221) according to the change of the total weight; the controller is electrically connected with the valve (60) to control the opening and closing of the valve (60) according to the output weight.

8. The charging device of claim 1, further comprising:

the driving part (70), the driving part (70) is arranged on the storing part (20) and is in driving connection with the scraping part (40);

the controller is electrically connected with the weighing sensor (30) and is used for acquiring the total weight weighed by the weighing sensor (30) and calculating the output weight of the urea particles output through the discharge hole (221) according to the change of the total weight; the controller is electrically connected with the driving part (70) so as to control the driving part (70) to drive the scraping part (40) to rotate when the output weight is smaller than a preset value.

9. The feeding device according to claim 1, wherein the material storage portion (20) comprises a first material storage section (21) and a second material storage section (22) from top to bottom, the first material storage section (21) is arranged in a column shape, the second material storage section (22) is arranged in a cone shape, and the tip end of the second material storage section (22) is provided with the material outlet (221).

10. The charging device according to claim 1, characterized in that said stand (10) comprises a mounting platform (11) and a plurality of legs (12), said plurality of legs (12) being connected to the bottom of said mounting platform (11);

wherein, be equipped with the mounting hole on mounting platform (11), storage portion (20) are worn to establish mounting hole department, the one end of weighing sensor (30) with mounting platform (11) are connected, the other end of weighing sensor (30) with storage portion (20) are connected.

11. The charging device of claim 1, further comprising:

the vacuum material sucking mechanism is connected with the discharge hole (221) through a hose; or

The screw feeding mechanism is connected with the discharge hole (221) through a hose.

12. A urea machine, characterized in that it comprises:

a stirring tank;

a feeding device for quantitatively delivering urea granules into the stirring tank, wherein the feeding device is the feeding device of any one of claims 1 to 11;

and the water supply device is used for quantitatively supplying pure water to the stirring tank.