Powder Material Quantitative Supply Device

Abstract

The present invention provides a quantitative powder material supply device in which the chamber of the quantitative supply unit to which fine powder is supplied is configured as a rotary exchange type to reduce supply time and improve product efficiency through an independent chamber method.

Description

Technology Field

[0001] The present invention relates to a quantitative supply device for powdered material. Background Technology

[0003] Devices for supplying powder in a precise quantity are generally made of metal, and among them, the screw conveyor system, which utilizes a rotating metal screw to quantitatively control the amount of powder supplied according to the rotation amount of the screw, is widely used.

[0004] However, generally, powder feeding devices using screw conveyors that utilize such metal screws are susceptible to operational failures, such as reduced supply efficiency or clogged supply paths, caused by powder absorbing moisture due to condensation on the screws. Furthermore, since the interior of the device cannot be viewed, it is difficult to determine whether the powder path is clogged or requires cleaning, and disassembling the device for maintenance or cleaning is very difficult, resulting in many inconveniences in actual use.

[0005] In addition, when adjusting the amount of powder supplied in a powder feeding device using a conventional screw conveyor system, it is inconvenient that the manager must manually configure the operation settings for each part. The problem to be solved

[0007] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a quantitative powder material supply device in which the chamber of the quantitative supply unit to which fine powder is supplied is configured as a rotary exchange type to reduce supply time and improve product efficiency through an independent chamber method.

[0008] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0010] A powder material quantitative supply device according to the present invention for solving the above problem comprises: a supply hopper that supplies a certain amount of stored fine powder to a quantitative supply unit; a quantitative supply unit mounted at the bottom of the supply hopper that divides and supplies a certain amount of fine powder while rotating horizontally; a rotary drive unit that rotates the quantitative supply unit at a certain speed; a metering hopper disposed at the bottom of the quantitative supply unit and receiving fine powder stored in the quantitative supply unit; a metering chamber formed eccentrically inside the metering hopper and receiving fine powder when aligned with a first chamber or a second chamber of the quantitative supply unit; and a load cell that measures the fine powder contained in the metering chamber.

[0011] The above-mentioned quantitative supply unit and metering hopper are arranged at a certain height apart and include a lifting unit that raises and lowers the supply hopper to feed fine powder stored in the quantitative supply unit into the metering chamber.

[0012] The above quantitative supply unit includes: a body portion located at the bottom of the supply hopper; a first chamber formed in the body portion for containing fine powder; a second chamber formed on one side of the first chamber for containing fine powder; and an air supply hole formed in the body portion for supplying compressed air from the outside.

[0013] The apparatus includes an opening / closing part provided at the bottom of each of the first and second chambers to prevent fine powder contained within the first and second chambers from spilling downward, and when the bottom of either the first chamber or the second chamber is positioned in alignment with the metering chamber and comes into contact with it, the opening / closing part positioned in alignment with the metering chamber opens.

[0014] The upper surface of the above-mentioned metering hopper is formed horizontally so as to come into close contact with the lower part of the quantitative supply section when the supply hopper is lowered, and the remaining upper surface, excluding the metering chamber, is configured to be closed. Effects of the invention

[0016] According to the present invention, the chamber of the quantitative supply unit to which fine powder is supplied is configured as a rotary exchange type, thereby reducing the supply time and improving product efficiency through an independent chamber method. Brief explanation of the drawing

[0018] FIG. 1 is an overall configuration diagram of a powder material quantitative supply device according to one embodiment of the present invention. FIG. 2 is a diagram showing the configuration of a supply hopper according to an embodiment of the present invention. FIG. 3 is a diagram showing the configuration of a quantitative supply unit according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a quantitative supply unit according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of an air supply hole according to an embodiment of the present invention. FIGS. 6 to 9 are diagrams showing the state in which fine powder is supplied through a powder material quantitative supply device according to an embodiment of the present invention. Specific details for implementing the invention

[0019] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable a person skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided appropriately described. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

[0020] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

[0021] First, FIG. 1 is an overall configuration diagram of a quantitative supply device for powdered material according to one embodiment of the present invention.

[0022] A powder material quantitative supply device according to one embodiment of the present invention includes a supply hopper (100), a quantitative supply unit (200), a rotary drive unit (300), a metering hopper (400), a metering chamber (500), and a load cell (600).

[0023] The above supply hopper ((100)) is formed with a wide upper section and a narrow lower section, and is equipped with an opening / closing plate on the upper section.

[0024] A certain amount of fine powder used in the medical field can be stored inside the supply hopper (100).

[0025] The above supply hopper (100) may include a lifting part (110) that lowers when fine powder is fed into the metering chamber (500) and returns to an initial state when the feeding of fine powder is completed.

[0026] The above lifting unit (110) may be installed at the rear end of the supply hopper (100) and may be configured to be raised by driving a motor using pneumatic and hydraulic cylinders or a rack and pinion.

[0027] The above lifting unit (110) can be operated through the control of the control unit, and can also be raised by a worker manually operating the lifting lever.

[0028] The supply hopper (100) can normally be positioned at a certain height apart from the metering hopper (400).

[0029] When fine powder stored in the quantitative supply unit (200) is fed into the metering chamber (500), the supply hopper (100) is lowered by operating the lifting unit (110) so that the quantitative supply unit (100) and the metering chamber (500) are in close contact with each other, and when the feeding of fine powder is completed, the lifting unit (110) is raised so that the quantitative supply unit (200) and the metering chamber (500) are separated back to their initial state.

[0030] The lower interior of the supply hopper (100) is formed with a partition plate (120) that isolates the interior of the supply hopper (100) from the quantitative supply unit (200).

[0031] A supply hole (130) is formed through the above-mentioned plate (120) to correspond to either of the first or second chambers (220) (230) of the quantitative supply unit (200). Accordingly, fine powder stored inside the supply hopper (100) can be supplied to the quantitative supply unit (200) through the supply hole (130).

[0032] When the supply port (130) and the first chamber (220) are aligned, fine powder from the supply hopper (100) is supplied to the first chamber (220), and when the supply of fine powder to the first chamber (220) is completed, the body part (210) is rotated by the rotation drive unit (300).

[0033] When the body part (210) rotates, the upper part of the first chamber (220) containing fine powder is closed by the partition plate (120), and the second chamber (230) is positioned in alignment with the supply port (130) to receive fine powder from the supply hopper (100).

[0034] A locking groove (140) is formed at the lower end of the supply hopper (100) to form a condition in which the body part (210) of the quantitative supply part (200) can be coupled and rotated.

[0035] The above-mentioned locking groove (140) is coupled with a locking projection (211) formed at the top of the body part (210), and the body part (210) can rotate horizontally by the operation of the rotational drive unit (300).

[0036] The above quantitative supply unit (200) is mounted at the bottom of the supply hopper (100) and rotates horizontally to supply a certain amount of fine powder to the metering chamber (500).

[0037] The quantitative supply unit (200) may include a body part (210), a first chamber (220), a second chamber (230), and an air supply hole (240).

[0038] The above body part (210) is formed in a cylindrical shape and can be coupled to the lower part of the supply hopper (100).

[0039] The body part (210) rotates horizontally by the driving of the rotational driving part (300).

[0040] The upper part of the body part (210) may include a protruding stopper (211) that allows horizontal rotation of the body part (210) while connecting the body part (210) to the supply hopper (100).

[0041] The above-mentioned stopper (211) is coupled to a stopper groove (140) formed at the bottom of the supply hopper (100), and when the body part (210) rotates by the driving of the rotary drive unit (300), the stopper (211) rotates horizontally within the stopper groove (140).

[0042] The first chamber (220) is formed vertically in the body part (210) and contains a certain amount of fine powder.

[0043] The second chamber (230) is formed vertically on the body part (210) and is formed on one side of the first chamber (220) to contain a certain amount of fine powder.

[0044] The first and second chambers (220) (230) are penetrated through the body part (210) to form a space, and the upper part of the penetrated first and second chambers (220) (230) is open, and the lower part has a first opening / closing part (250) formed so that the space can be opened and closed.

[0045] The above air supply hole (240) can be formed through the body portion (210) between the first and second chambers (220) (230).

[0046] The above air supply hole (240) is a hole for supplying compressed air from the outside to the metering hopper (400) instantaneously.

[0047] The air supply hole (240) may include a first supply hole (241) and a second supply hole (242).

[0048] The first supply hole (241) is horizontally penetrated into the interior of the body part (210), and a supply hose supplying compressed air from the outside can be connected to the outer end of the first supply hole (241).

[0049] Here, it is preferable that the supply hose be formed of a flexible material to flexibly respond to the lifting operation of the supply hopper (100).

[0050] The second supply hole (242) can be formed by bending it vertically at the inner end of the first supply hole (241).

[0051] The second supply hole (242) is formed to be open toward the upper surface (410) of the metering hopper (400). Accordingly, compressed air introduced through the first supply hole (241) and the second supply hole (242) is instantaneously discharged onto the upper surface (410) to remove fine powder remaining on the upper surface (410), thereby enabling accurate weight measurement of the fine powder.

[0052] The bottom surface of the body part (210) may include an expansion space (243) that communicates with the second supply hole (242).

[0053] The above expansion space (243) is recessed inwardly to a certain height on the bottom surface of the body part (210) and can be formed with a width equal to the diameter of the first chamber (220) and the second chamber (230). Accordingly, compressed air supplied through the second supply hole (242) spreads into the diffusion space (243), thereby instantly blowing away and removing fine powder remaining on the upper surface (410) of the metering hopper (400).

[0054] The above-mentioned expansion space (243) may include an outward slope (244) and a guide surface (245) to blow fine powder outward from the metering hopper (400).

[0055] The above outward slope (244) can be formed at an angle on the inner side of the expansion space (243).

[0056] The slope of the outward slope (244) is formed to slope outward toward the body part (210) as it extends from the upper part of the expansion space (243) to the lower part. Accordingly, when compressed air is discharged to the upper surface (410), fine powder remaining on the upper surface (410) is blown outward toward the metering hopper (400).

[0057] The guide surface (245) can be formed on the outer side of the expansion space (243).

[0058] The guide surface (245) forms a gentle slope from the end of the second supply hole (242) toward the outer direction of the body part (210). Accordingly, the discharge direction of the compressed air instantaneously discharged through the second supply hole (242) is changed toward the outer direction of the metering hopper (400) along the outward slope (244), and the compressed air with the changed direction is guided along the guide surface to blow and remove fine powder remaining on the upper surface (410) toward the outer direction of the metering hopper (400).

[0059] Therefore, since fine powder remaining on the upper surface (410) is not introduced into the metering chamber (500), accurate metering of fine powder becomes possible.

[0060] The first opening / closing unit (250) can be operated by the control of the control unit, and can be operated through manual operation by a worker operating the opening / closing lever.

[0061] The first opening / closing part (250) can be rotatably mounted at the bottom of the first and second chambers (220) (230).

[0062] The first opening / closing part (250) may include a shaft (251), a rotating plate (252), and a driving motor (253).

[0063] The shaft (251) can be horizontally connected to the lower part of the body portion (210) through which the first and second chambers (220) (230) are penetrated.

[0064] The above-mentioned rotating plate (252) is formed on both sides centered on the shaft to close and open the penetrating lower portions of the first and second chambers (220) (230).

[0065] The above drive motor (253) is fixed to the end of the shaft (251) and rotates the shaft (251). The drive motor (253) can be operated by the control of the control unit.

[0066] In addition, the rotary drive unit (300) causes the motor unit (320) to rotate the gear unit (310) to rotate the quantitative supply unit (200) horizontally.

[0067] The above gear section (310) is divided into a driving gear and a driven gear, the driving gear is a gear fixed to the rotation shaft of the motor section (320), and the driven gear is a gear formed on the outer surface of the body section (210), so that the body section can be rotated by the rotation of the driving gear.

[0068] Here, the motor unit (320) can rotate automatically under the control of the control unit, and can also be operated by a worker manually operating the motor unit.

[0069] The above metering hopper (400) can be placed at the bottom of the metering supply unit (200).

[0070] The metering hopper (400) can be fixed at a position spaced apart by a certain height from the lower part of the metering supply unit (200).

[0071] The outer diameter of the metering hopper (400) can be formed to be the same as the outer diameter of the metering supply unit (200).

[0072] The upper part of the metering hopper (400) has a horizontal upper surface (410) formed thereon, and the upper surface (410) is closed on all sides except for the metering chamber (500).

[0073] The above metering chamber (500) can be formed in the metering hopper (400).

[0074] The metering chamber (500) is eccentrically positioned in the metering hopper (400), the upper part is formed to be open, and the lower part is equipped with a second opening / closing part (510).

[0075] The lower space of the metering chamber (500) is opened and closed by the operation of the second opening / closing part (510) above.

[0076] The above second opening / closing part (510) opens the lower space of the weighing chamber (500) when the weighing of the fine powder introduced into the weighing chamber (500) is completed.

[0077] The second opening / closing unit (510) can be operated by the control of the control unit, and can be operated by manual operation in which a worker operates the opening / closing lever.

[0078] The second opening / closing part (510) may include a shaft (511), a rotating plate (512), and a driving motor (513).

[0079] The shaft (511) can be horizontally connected to the space at the bottom of the metering chamber (500).

[0080] The above-mentioned rotating plate (512) is formed on both sides centered on the shaft (511) to close and open the penetrating lower part of the metering chamber (500).

[0081] The above drive motor (513) is fixed to the end of the shaft (511) to rotate the shaft (511), and the drive motor (513) can be operated by the control of the control unit.

[0082] In addition, the load cell (600) is provided at the bottom of the weighing chamber (500) and weighs the fine powder contained in the weighing chamber (500).

[0083] When the weight of the fine powder is measured through the load cell (600), the measured weight information is transmitted to the control unit, and if it is within the error range of the preset weight, the control unit is controlled to rotate the second opening / closing unit (510).

[0084] Additionally, an electrostatic barrier (700) may be included on the inner surface of the first chamber (220), the second chamber (230), and the metering chamber (500).

[0085] The fine powder contained in the first chamber (220), second chamber (230), and metering chamber (500) may generate static electricity due to friction between particles. If the fine powder is a highly reactive chemical or a flammable substance, there is a high risk of fire due to frictional heat or sparks caused by static electricity, and the static electricity barrier (700) of the present invention prevents such phenomena.

[0086] The above electrostatic barrier film (700) may be either a carbon nanotube film or a graphene film.

[0087] In this way, when an electrostatic barrier film (700) is coated on the first chamber (220), the second chamber (230), and the metering chamber (500), it has electrical resistance, thereby reducing friction between particles of fine powder and inducing natural discharge, thereby suppressing the generation of static electricity.

[0088] The following describes the process of supplying fine powder through the powder material quantitative supply device of the present invention.

[0089] Referring to FIGS. 6 to 9, a certain amount of fine powder is stored inside the supply hopper (100).

[0090] When the motor part (320) of the rotary drive unit (300) is driven, the body part (210) rotates and fine powder is supplied into the first and second chambers (220) (230) through the supply port (130). At this time, the lower part of the first and second chambers (220) (230) is closed by the first opening / closing part (250).

[0091] In this state, the supply hopper (100) is lowered by the lifting unit (110), and the quantitative supply unit (200) is rotated by the rotary drive unit (300).

[0092] The first chamber (220) of the above quantitative supply unit (200) is positioned in alignment with the metering chamber (500) and is in close contact with it, and the shaft (251) of the first opening / closing unit (250) rotates to supply fine powder from the first chamber (220) into the metering chamber (500).

[0093] Here, when the above-mentioned quantitative supply unit (200) rotates, compressed air is supplied from the outside to the air supply hole (240) and instantly blows away fine powder particles remaining on the upper surface (410). Accordingly, fine powder can be measured precisely and supplied in a quantitative amount.

[0094] When fine powder is supplied to the weighing chamber (500), the load cell (600) weighs the fine powder, and if the weight is within a preset weight, the shaft (511) of the second opening / closing part (510) is rotated, and when the rotating plate (512) is rotated, the fine powder in the weighing chamber (500) is supplied to the collection part (C) provided at the bottom of the weighing hopper (400).

[0095] When fine powder is supplied to the collection unit (C), the supply hopper (100) is raised through the lifting unit (110), and the quantitative supply unit (200) is rotated by the rotary drive unit (300), and the second chamber (230) is positioned in alignment with the metering chamber (500), and the first chamber (220) is positioned in alignment with the supply port (130), so that fine powder is supplied to the first chamber (220), and while repeating this process, fine powder is supplied in a quantitative amount.

[0096] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0098] 100: Supply hopper 110: Elevator 120: Plate 130: Supply worker 140: Locking groove 200: Quantitative supply unit 210: Body part 220: First chamber 230: Second chamber 240: Air supply hole 241: 1st Supply Hole 242: Second supply hole 243: Expansion space 244: Outward slope 245: Guide side 250: 1st opening / closing section 300: Rotary drive unit 310: Gear section 320: Motor section 400: Weighing hopper 410: Top surface 500: Metering chamber 510: Second opening / closing section 600: Load cell 700: Antistatic barrier

Claims

Claim 1 A powder material quantitative supply device comprising: a supply hopper (100) that supplies a certain amount of stored fine powder to a quantitative supply unit (200); a quantitative supply unit (200) mounted on the lower part of the supply hopper (100) and rotating horizontally to supply a certain amount of fine powder in small portions; a rotary drive unit (300) that rotates the quantitative supply unit (200) at a certain speed; a metering hopper (400) disposed on the lower part of the quantitative supply unit (200) and receiving fine powder stored in the quantitative supply unit (200); a metering chamber (500) formed eccentrically inside the metering hopper (400) and receiving fine powder when aligned with the first chamber (220) or the second chamber (230) of the quantitative supply unit (200); and a load cell (600) that measures the fine powder contained in the metering chamber (500). Claim 2 A powder material quantitative supply device according to claim 1, wherein the quantitative supply unit (200) and the metering hopper (400) are spaced apart at a certain height, and the device includes a lifting unit (110) for raising and lowering the supply hopper (100) to feed fine powder stored in the quantitative supply unit (200) into the metering chamber (500). Claim 3 A powder material quantitative supply device according to claim 1, wherein the quantitative supply unit (200) comprises: a body portion (210) located at the bottom of the supply hopper (100); a first chamber (220) formed in the body portion (210) for containing fine powder; a second chamber (230) formed on one side of the first chamber (220) for containing fine powder; and an air supply hole (240) formed in the body portion (210) for supplying compressed air from the outside. Claim 4 A powder material quantitative supply device according to claim 3, comprising an opening / closing part (250) provided at the bottom of each of the first and second chambers (220) (230) so as to be openable / closable so as not to pour out the fine powder contained inside the first and second chambers (220) (230), wherein when the bottom of either the first chamber (220) or the second chamber (230) is positioned in alignment with the metering chamber (500) and comes into contact with it, the opening / closing part (250) positioned in alignment with the metering chamber (500) among the opening / closing parts (250) is opened. Claim 5 A powder material quantitative supply device according to claim 1, wherein the upper surface (410) of the metering hopper (400) is formed horizontally and comes into close contact with the lower part of the quantitative supply unit (200) when the supply hopper (100) is lowered, and the remaining upper surface (410) excluding the metering chamber (500) is configured to be closed.

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