阅读说明：本技术 使用真空输送机的粉体自动输送系统 (Automatic powder conveying system using vacuum conveyor ) 是由 李齐烈 梁至鈗 于 2020-03-05 设计创作，主要内容包括：本发明涉及一种能够使计量误差最小化的粉体自动输送系统,其包括：粉体注入部,注入用于生产产品的粉体；粉体存储部,接收来自所述粉体注入部的粉体,并存储所接收的粉体；真空输送部,以真空吸入方式将注入至所述粉体注入部的粉体输送至所述粉体存储部；粉体移动通路,连接所述粉体注入部和所述真空输送部,从而形成输送粉体的通路；以及真空破坏部,调节所述粉体移动通路的压力,从而限制通过所述粉体移动通路发生的粉体的输送,因此,可以更加精确地进行输送。(The invention relates to an automatic powder conveying system capable of minimizing metering error, which comprises: a powder injection part for injecting powder for producing a product; a powder storage unit that receives the powder from the powder injection unit and stores the received powder; a vacuum conveying unit configured to convey the powder injected into the powder injection unit to the powder storage unit by vacuum suction; a powder moving passage connecting the powder injection part and the vacuum conveying part to form a passage for conveying powder; and a vacuum breaking part for regulating the pressure of the powder moving passage to limit the transportation of the powder generated through the powder moving passage, so that the powder can be transported more accurately.)

1. An automatic powder conveying system is characterized by comprising:

a powder injection unit (100) into which powder is injected;

a powder storage unit (200) that receives the powder from the powder injection unit (100) and stores the received powder;

a vacuum conveying unit (300) that conveys the powder injected into the powder injection unit (100) to the powder storage unit (200) by vacuum suction;

a powder moving passage (400) which connects the powder injection unit (100) and the vacuum conveying unit (300) and forms a passage for conveying powder; and

and a vacuum breaking part (500) for regulating the pressure of the powder moving passage (400) so as to limit the transportation of the powder generated through the powder moving passage (400).

2. The automatic powder conveying system according to claim 1,

the vacuum breaking unit (500) is a vacuum breaking valve that causes external air to flow directly into the powder movement path (400) and breaks the vacuum state of the powder movement path (400).

3. The automatic powder conveying system according to claim 1,

the vacuum breaking unit (500) injects a gas into the powder movement path (400), thereby breaking the vacuum state of the powder movement path (400).

4. The automatic powder conveying system according to claim 3,

the powder injection part (100) further comprises a powder measuring part (110) that measures at least one of a weight change of the powder injection part (100) and a weight of the powder supplied from the powder injection part (100) to the powder moving passage (400),

the vacuum breaking unit (500) is linked with the powder measuring unit (110), and operates when the weight change of the powder injection unit (100) measured by the powder measuring unit (110) or the amount of powder supplied from the injection unit (100) to the powder moving passage (400) approaches or reaches a predetermined value.

5. The automatic powder conveying system according to claim 4, further comprising a powder conveying amount adjusting section (600) for adjusting an amount of the powder supplied from the powder injecting section (100) to the powder moving passage (400).

6. The automatic powder conveying system according to claim 5,

the powder conveying amount adjusting part (600) is linked with the vacuum conveying part (300), and reduces or blocks the amount of powder supplied from the powder injecting part (100) to the powder moving passage (400) when the vacuum conveying part (300) is operated.

7. The automatic powder conveying system according to claim 6,

the powder conveying amount adjusting part (600) adjusts the cross-sectional area of a flow path through which the powder passes, thereby adjusting the amount of the powder passing.

8. The automatic powder conveying system according to claim 1,

a plurality of powder injection parts (100) and powder moving passages (400) are arranged according to the size of the used powder,

the powder storage unit (200) further includes powder injection branch pipes (210) connected to the plurality of powder injection units (100) through different powder moving passages (400).

9. The automatic powder conveying system according to claim 8,

the branch pipe (210) includes:

an upper branch pipe (210A) which is positioned on the upper side and is provided with a plurality of moving passage coupling parts for coupling the powder moving passages (400);

and a lower branch pipe (210B) which is obliquely connected to the upper branch pipe (210A) below the upper branch pipe (210A).

10. The automatic powder conveying system according to claim 9,

the powder moving passages (400) have different materials according to the specific gravity of the powder passing through.

Technical Field

The present invention relates to an automatic powder conveying system, and more particularly, to an automatic powder conveying system capable of minimizing a metering error occurring in a process of conveying powder using a vacuum conveyor.

Background

The powder conveying apparatus is an apparatus for conveying powder from a fine powder state to a solid body having a diameter of several centimeters, and conventionally, apparatuses used for conveying powder include a screw conveyor type, a rope conveyor type, a suction conveyor type, and the like.

Fig. 1 is a diagram showing a conventional powder raw material conveying apparatus using a vacuum hopper, the conventional powder raw material conveying apparatus including: a frame disposed at a predetermined height; a vacuum hopper 2 fixedly provided at an upper portion of the frame, having a suction pipe and a first air discharge pipe provided at an outer circumferential surface thereof to communicate with the inside thereof, and having a powder raw material discharge port formed at a lower portion thereof; a first solenoid valve 3 having one end disposed at the suction pipe and the other end connected to the supply hose; a raw material supply hopper 7 provided at a position lower than the vacuum hopper to accommodate the powder raw material P to be conveyed; a supply hose having one end connected to the first solenoid valve and the other end close to the lower surface of the raw material supply hopper; a ball valve 4 provided at a powder raw material discharge port of the vacuum hopper to discharge the raw material contained in the vacuum hopper; a second electromagnetic valve, one end of which is arranged at the first air outlet pipe of the vacuum hopper; a second air outlet pipe, one end of which is connected to the second electromagnetic valve; a blower connected to the other end of the second air outlet duct to communicate with the vacuum hopper and to vacuum the inside of the vacuum hopper; a pressure sensor disposed in the vacuum hopper to measure a vacuum state of the vacuum hopper; and a control unit which receives an output of the pressure sensor, controls the blower and the first and second electromagnetic valves, and conveys the powder raw material contained in the raw material supply hopper to the upper vacuum hopper, and controls the ball valve to discharge the powder raw material conveyed to the vacuum hopper.

However, the conventional powder raw material conveying apparatus using the conventional vacuum hopper has a disadvantage in that the amount of the powder raw material flowing into the vacuum hopper is adjusted only by the electromagnetic valve, and thus, a highly arranged vacuum pump is required and the electromagnetic valve needs to be accurately controlled. In addition, in the raw material supply hopper, since the supply hose for conveying the powder raw material to the vacuum hopper is formed with a single diameter, when the powder raw material having a relatively large diameter is supplied, there is a possibility that the supply hose is clogged.

Disclosure of Invention

Technical problem to be solved

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an automatic powder conveying system using a vacuum conveyor of a new type, which can accurately convey powder without using a highly disposed vacuum pump.

Further, it is another object of the present invention to provide an automatic powder conveying system in which a separate powder conveying amount adjusting part is formed in a powder injecting part for supplying powder and a vacuum state formed in a powder moving path is adjusted, thereby accurately conveying powder without precise control of an electromagnetic valve.

Another object of the present invention is to provide an automatic powder conveying system including a plurality of branch pipes having different diameters to smoothly convey powder having various diameters.

(II) technical scheme

The automatic powder conveying system according to the present invention for achieving the above object includes: a powder injection unit 100 for injecting powder; a powder storage unit 200 that receives the powder from the powder injection unit 100 and stores the received powder; a vacuum transfer unit 300 for transferring the powder injected into the powder injection unit 100 to the powder storage unit 200 by vacuum suction; a powder moving passage 400 connecting the powder injection unit 100 and the vacuum transfer unit 300 to form a passage for transferring powder; and a vacuum breaking unit 500 for regulating the pressure of the powder moving passage 400 to restrict the powder transport through the powder moving passage 400.

In this case, the vacuum breaking unit 500 is a vacuum breaking valve that breaks the vacuum state of the powder moving passage 400 by directly flowing external air into the powder moving passage 400.

In addition, the vacuum breaking unit 500 is characterized in that the vacuum breaking unit breaks the vacuum state of the powder moving passage 400 by injecting a gas into the powder moving passage 400.

In addition, the powder injection part 100 further includes a powder measuring part 110 that measures a weight change of the powder injection part 100 or at least one of an amount and a weight of the powder supplied from the powder injection part 100 to the powder moving passage 400, and the vacuum breaking part 500 is operated in conjunction with the powder measuring part 110 when the weight change of the powder injection part 100 measured by the powder measuring part 110 or the amount of the powder supplied from the powder injection part 100 to the powder moving passage 400 approaches or reaches a predetermined value.

In addition, the present invention is characterized by further comprising: a powder conveying amount adjusting part 600 for adjusting the amount of the powder supplied from the powder injecting part 100 to the powder moving passage 400.

In addition, the present invention is characterized in that the powder conveying amount adjusting part 600 is linked with the vacuum conveying part 300, and reduces or blocks the amount of powder supplied from the powder injecting part 100 to the powder moving passage 400 when the vacuum conveying part 300 is operated.

In addition, the powder conveying amount adjusting unit 600 adjusts the amount of the powder passing through the passage by adjusting the cross-sectional area of the passage through which the powder passes.

In addition, the powder injection part 100 and the powder moving passage 400 are provided in plural numbers according to the size of the powder to be used, and the powder storage part 200 further includes a powder injection branch pipe 210 connected to the plural powder injection parts 100 into which the different powders are injected through the different powder moving passages 400.

In addition, the present invention is characterized in that the branch pipe 210 includes: an upper branch pipe 210A located at an upper side and formed with a plurality of movement passage coupling portions to which the powder movement passages 400 are coupled; and a lower branch pipe 210B obliquely connected to the upper branch pipe 210A below the upper branch pipe 210A.

In addition, the present invention is characterized in that the plurality of powder moving passages 400 have different materials according to the specific gravity of the powder passing therethrough.

(III) advantageous effects

The automatic powder conveying system can immediately block the powder conveyed to the powder storage part at a designated time by breaking the vacuum of the powder moving passage, so that the automatic powder conveying system has the advantage of more accurately adjusting the conveyed powder amount.

On the other hand, the present invention can adjust the cross-sectional area of the flow path through which the powder transported from the powder injection part to the powder movement path passes, and therefore, has an advantage that the powder can be restricted from rapidly moving to the powder storage part under the initial vacuum pressure.

Drawings

Fig. 1 is a diagram illustrating a conventional powder raw material conveying apparatus.

Fig. 2 is a front view showing an automatic powder conveying system according to a first embodiment of the present invention.

Fig. 3 is a schematic view showing that external air in the automatic powder conveying system according to the first embodiment of the present invention flows into the powder moving passage through the vacuum breaking part.

Fig. 4 is a front view showing an automatic powder conveying system according to a second embodiment of the present invention.

Fig. 5 is a schematic view showing the movement of powder by the powder conveying amount adjusting part of the automatic powder conveying system according to the second embodiment of the present invention.

Fig. 6 is a front view showing an automatic powder conveying system according to a third embodiment of the present invention.

Description of the reference numerals

1000: the automatic powder conveying system 100 of the present invention: powder injection part

110: powder measuring unit 200: powder storage part

210: powder injection branch pipe 210A: upper branch pipe

210B: the lower branch pipe 300: vacuum conveying part

400: powder movement path 500: vacuum breaking part

600: powder conveyance amount adjustment unit M: mixing section

Detailed Description

Advantages, features and methods of implementing embodiments of the present invention will be clearly understood by referring to the embodiments and the accompanying drawings described in detail below. However, the present invention is not limited to the following embodiments, which are provided only for more complete description of the present invention and for a person of ordinary skill in the art to which the present invention pertains to fully describe the scope of the present invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals denote the same constituent elements.

In describing the embodiments of the present invention, a detailed description of the same will be omitted when it is considered that a detailed description of the common general knowledge or configuration may unnecessarily obscure the gist of the present invention. The following terms are defined in consideration of functions in the embodiments of the present invention, and may be different depending on the intention of a user or an operator, a convention, and the like. Therefore, the definitions of the terms should be determined based on the entire contents in the present specification.

An automatic powder conveying system 1000 according to the present invention will be described below with reference to the drawings.

Fig. 2 shows an automatic powder conveying system according to a first embodiment of the present invention, and referring to fig. 2, the automatic powder conveying system according to the first embodiment includes: a powder injection unit 100 for injecting powder; a powder storage unit 200 for receiving and storing the powder from the powder injection unit 100; a mixing unit M that receives and mixes the powder from the powder storage unit 200, and further includes: a powder moving path 400 for conveying powder from the powder injection unit 100 to the powder storage unit 200; a vacuum transfer unit 300 for transferring the powder in the powder injection unit 100 to the powder storage unit 200; and a vacuum breaking part 500 formed in the powder moving passage 400, wherein when the powder is transferred to the powder storage part 200 by a set amount, the vacuum breaking part 500 raises the pressure of the powder moving passage 400 to restrict the powder of the set amount or more from flowing into the powder storage part 200.

Fig. 3 is a schematic view for explaining in more detail that gas is supplied to a powder moving path through a vacuum breaking part, in an automatic powder conveying system that conveys powder by a vacuum suction method, when the performance of a vacuum forming part of the vacuum conveying part 300 is poor, it is difficult to determine and block the movement of powder conveyed to the powder storage part 200 through the powder moving path 400 at a specific time, and conversely, in the present invention, the vacuum breaking part 500 is formed in the powder moving path 400, and when the amount of powder conveyed to the powder storage part 200 from the powder injection part 100 reaches a predetermined amount, the vacuum breaking part 500 raises the pressure of the powder moving path 400, so that the conveyance of powder through the powder moving path 400 can be more quickly and accurately blocked.

On the other hand, the powder injection part 100 may further include a powder measuring part 110 that measures the weight of the powder transferred from the powder injection part 100 to the powder storage part 200, and the powder weight measuring method of the powder measuring part 110 may include a method that uses a change in the weight of the powder injection part 100 occurring according to the transfer of the powder and a method that measures the amount of the powder supplied from the injection part 100 to the powder moving passage 400 and converts the amount into the weight.

When the powder measuring unit 110 is linked to the vacuum breaking unit 500 and the weight of the powder measured by the powder measuring unit 110 approaches or reaches a predetermined arbitrary value, the vacuum breaking unit 500 may be operated to immediately block the powder transported through the powder moving passage 400 from further flowing into the powder storage unit 200, and the vacuum breaking unit 500 may break the vacuum state of the powder moving passage 400, as shown in the schematic diagram of fig. 3, may be a system in which the powder moving passage 400 communicates with the outside air, and the outside air is sucked into the powder moving passage 400 to break the vacuum of the powder moving passage 400, or may be a system in which a gas is injected from the vacuum breaking unit 500 into the powder moving passage 400.

That is, after determining the type and amount of the necessary powder, the vacuum conveying part 300 vacuums a specific space of the powder storage part 200 connected to the powder moving passage 400, measures the weight of the powder conveyed from the powder injection part 100 to the powder storage part 200 at the powder measuring part 110 while conveying the powder stored in the powder injection part 100 to the powder storage part 200, and when the weight of the powder measured by the powder measuring part 110 is close to a predetermined value, the vacuum breaking part 500 coupled to the powder moving passage 400 flows gas into the powder moving passage 400, thereby breaking the vacuum formed in the powder moving passage 400 and stopping the conveyance of the powder through the powder moving passage 400.

Fig. 4 is a perspective view showing an automatic powder conveying system according to a second embodiment of the present invention, and fig. 5 is a schematic view showing the movement of powder occurring in a powder injection part provided with a powder conveying amount adjusting part.

Referring to fig. 4, the automatic powder conveying system of the present invention may further include: and a powder conveying amount adjusting part 600 that adjusts the amount of the powder supplied from the powder injecting part 100 to the powder moving passage 400. More specifically, when the air in the powder storage unit 200 or a specific space connected to the powder moving path 400 is discharged from the vacuum conveying unit 300 to the outside to be in a vacuum state, the pressure difference between the powder injecting unit 100 and the powder storage unit 200 is maximized, and a large amount of powder is instantaneously sucked into the powder storage unit 200, so that the amount of powder conveyed to the powder storage unit 200 may exceed a predetermined value, and therefore, the amount of powder discharged from the powder injecting unit 100 is adjusted by the powder conveying amount adjusting unit 600 to solve the problem that a large amount of powder is instantaneously conveyed to the powder storage unit 200 under the initial vacuum pressure.

At this time, the powder conveying amount adjusting part 600 is linked with the vacuum conveying part 300, so that the operation time of the vacuum conveying part 300 can be set as the time of reducing or blocking the amount of the powder supplied from the powder injecting part 100 to the powder conveying path 400, and further, it is possible to measure a change in pressure at a position where the vacuum transfer part 300 becomes an initial vacuum state when discharging the internal gas to the outside, and when the pressure difference between the measured pressure and the powder injecting part 100 reaches a designated value or more, the powder transport amount adjusting part 600 may operate, further, the powder conveying amount adjusting part 600 may adjust the amount of the powder discharged from the powder injecting part 100, as shown in FIG. 5, the cross-sectional area of the internal flow passage 610 of the powder conveyance amount adjusting section 600 is adjusted by the cross-sectional area adjusting section 620, thereby adjusting the amount of powder passing through the flow path 610 inside the powder conveying amount adjusting unit 600.

Fig. 6 is a perspective view showing an automatic powder conveying system according to a third embodiment of the present invention, and referring to fig. 6, the automatic powder conveying system of the present invention includes a plurality of powder injection parts 100 and a plurality of powder moving passages 400 corresponding to the size and specific gravity of powder, and the powder storage part 200 may be connected to each of the powder injection parts 100 through a single powder moving passage 400, respectively.

For example, in the case of manufacturing an anode of a secondary battery, a powder having a specific gravity close to 2 is required as a heavy material, in contrast, in the case of manufacturing a cathode, a powder having a specific gravity less than 1 is required as a powder, and if the inner diameter of a tube for transporting a powder having a heavy characteristic having a specific gravity of 2 or more is larger than a predetermined size, there is a problem that the powder cannot be transported and the tube is crushed by a vacuum pressure, and if the inner diameter of a tube for transporting a powder having a light specific gravity less than 1 is smaller than a predetermined size, a large amount of time may be required for transporting the powder, and therefore, it is preferable to form the powder moving passage 400 using a tube suitable for various powder characteristics.

That is, in order to transport powders having different sizes and specific gravities to the mixing part M through the powder storage part 200, the powder moving path 400 optimized for the transport of each powder is required, and in the present invention, in order to transport powders having different properties to the mixing part M through one powder storage part 200, the plurality of powder moving paths 400 are connected to each powder injection part 100, thereby solving the problem of breakage of the powder moving path 400 and the problem of delay in time required for transporting the powder, which may occur during the transport of the powder.

In this case, the powder storage part 200 may include a powder injection branch pipe 210 formed with a movement path coupling part 211 coupling a plurality of powder movement paths 400, and the powder injection branch pipe 210 may include: an upper branch pipe 210A positioned at an upper side and formed with the movement path coupling part 211; and a lower branch pipe 210B positioned below the upper branch pipe 210A, one side of which in the longitudinal direction is obliquely coupled to the lower side of the upper branch pipe 210A, and the other side of which in the longitudinal direction is obliquely coupled to a side surface of the powder storage main body 220 of the powder storage part 200. Specifically, the upper branch pipes 210A receive the powder supplied through each of the powder moving passages 400, and the powder supplied to the upper branch pipes 210A is naturally transported to the powder storage main body 220 through the lower branch pipes 210B formed to be inclined from the upper side to the lower side.

Further, it is preferable that the material of the powder moving passage 400 is set to be different depending on the specific gravity of the powder, for example, when the powder for manufacturing the anode having a specific gravity close to 2 is transported, the PVC material of 50 to 100A is preferably used, and when the powder for manufacturing the cathode having a specific gravity less than 1 is transported, the urethane material of 75 to 100A is preferably used.

The present invention is not limited to the above-described embodiments, and the application range of the present invention is various, and various modifications can be made by a person having ordinary skill in the art within the scope not departing from the gist of the present invention claimed in the claims.