Powder and particle supply device

Abstract

The present invention provides a powder and granular material supply device having a leakage prevention portion that can catch powder and granular material scattered from a supply port when the supply of powder and granular material stops, and does not hinder the supply of powder and granular material from the supply port during the supply of powder and granular material. The powder and granular material supply device (1) of the present invention is characterized in that it comprises a main body (2), a plurality of hoppers (3), and a plurality of leakage prevention portions (4), wherein the hoppers (3) have an inlet (31) for feeding powder and granular material into the hoppers (3), and a supply portion (32) for supplying powder and granular material stored in the hoppers (31) from the supply port (321), and the leakage prevention portion (4) has a receiving member (41) and a driving member (42), wherein the receiving member (41) can be moved by the driving member (42) to a first position where it can catch powder and granular material scattered from the supply port (321) and a second position where it can supply powder and granular material from the supply port (321).

Description

Technical Field

[0001] The present invention relates to a powder or granular material supply device, and more particularly to a powder or granular material supply device having a leakage prevention portion. Background Art

[0002] In a powder or granular material supplying device that supplies powder or granular material, when supply is started and then stopped, powder or granular material remains near the supply port. Therefore, there is a concern that the powder or granular material remaining near the supply port may collapse due to vibration or the like, and the powder or granular material may scatter from the supply port.

[0003] In addition, when the supply is stopped, it is ideal that the supply of powder and granular material is stopped immediately after the drive of the powder and granular material supply device is stopped. However, due to the nature of the powder and granular material, there is also a situation where the supply of powder and granular material is not stopped immediately after the drive of the powder and granular material supply device is stopped, thereby unintentionally continuing to supply powder and granular material remaining near the supply port.

[0004] In order to solve the above-mentioned problem, patent document 1 discloses a powder and particle supply device, which is a powder and particle supply device for supplying powder and particle, and comprises: a shell having an internal space for accommodating powder and particle; a conveying path, the upstream side of which is connected to the above-mentioned shell and has an opening at the downstream end; a conveying mechanism, which conveys powder and particle from the upstream to the downstream of the above-mentioned conveying path; a cover, which is provided at the above-mentioned downstream end of the above-mentioned conveying path and is tightly attached to the above-mentioned opening by means of a suction force generated by the negative pressure inside the above-mentioned conveying path; and a vent, which allows an airflow to flow that pushes the powder and particle at the downstream end of the above-mentioned conveying path back to the upstream side when the above-mentioned cover is tightly attached to the above-mentioned opening.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-131378

[0006] The powder and granular material supply device of Patent Document 1 changes the pressure in the conveying path when the cover is opened and closed, and therefore requires equipment such as a suction blower, etc. Consequently, the required equipment increases and the device structure becomes complicated. Summary of the Invention

[0007] Therefore, the present invention aims to provide a powder and granular material supply device having a leakage prevention portion that can catch powder and granular material scattered from a supply port when the supply of powder and granular material is stopped, and does not hinder the supply of powder and granular material from the powder and granular material supply device during the supply of powder and granular material.

[0008] The present invention is a powder and granular material feeding device, characterized in that the above-mentioned powder and granular material feeding device comprises: a main body; a plurality of storage containers that store powder and granular materials inside and can be connected to the above-mentioned main body; and a plurality of leakage prevention parts, the above-mentioned storage container has: an input port, into which the above-mentioned powder and granular materials can be input; and a feeding part having a feeding port, and supplying the above-mentioned powder and granular materials stored in the above-mentioned storage container from the above-mentioned feeding port, the above-mentioned leakage prevention part comprises: a receiving part that can receive the above-mentioned powder and granular materials scattered from the above-mentioned feeding port; and a driving part that moves the above-mentioned receiving part, the above-mentioned receiving part being able to move to a first position where it can receive the above-mentioned powder and granular materials scattered from the above-mentioned feeding port, and a second position where it can supply the above-mentioned powder and granular materials from the above-mentioned feeding port through the above-mentioned driving part, the above-mentioned feeding port being arranged above the upper opening of the container for measuring the above-mentioned powder and granular materials, and the above-mentioned receiving part being able to move above the above-mentioned upper opening.

[0009] With this configuration, the hopper can supply the powder or granular material stored therein from the supply port of the supply unit, and the receiving member can receive the powder or granular material. Furthermore, the receiving member can be moved by the drive unit. This configuration improves the accuracy of measuring the powder or granular material.

[0010] When the supply device is not supplying the powder or granular material, the receiving member of the leakage prevention portion can be positioned by the driving unit of the leakage prevention portion in a first position where it can receive the powder or granular material scattered from the supply port of the supply portion, thereby preventing the powder or granular material from leaking out of the supply port. When the supply portion is supplying the powder or granular material, the receiving member of the leakage prevention portion can be positioned by the driving unit of the leakage prevention portion in a second position where it can supply the powder or granular material from the supply port of the supply portion, thereby allowing the supply portion to supply the powder or granular material without being hindered by the receiving member.

[0011] In this specification, the following terms are used: "Powders and granules" include any of powders, granules, or a mixture of powders and granules. The applications of powders and granules are not limited to food, pharmaceuticals, construction, civil engineering, semiconductors, and so on.

[0012] "Supplying powder or granular material from the supply port" means discharging the powder or granular material from the supply port to the outside of the hopper. For example, the discharged powder or granular material falls into a container and is stored, and is supplied for the purpose of measuring the weight of the powder or granular material in the container with a weighing device.

[0013] "Leakage" refers to the unintentional supply of powder or granules due to vibration, etc., when the hopper is not supplying powder or granules from the supply port. The amount of leakage affects the angle of repose of the powder or granules.

[0014] The “supply unit” is exemplified by a screw conveyor and a screw feeder, but other powder or granular material supply units such as a vibration feeder and a belt conveyor may be used as long as they have a function of transferring the powder or granular material.

[0015] The “receiving member” is exemplified by a box-shaped body or a disk-shaped body having an opening at the top, and has a structure capable of receiving and holding the powder or granular material inside.

[0016] The "driving unit" is not particularly limited, and existing driving units can be used, and examples thereof include a hydraulic cylinder, a pneumatic cylinder, and a motor.

[0017] “Catching the powder or granular material” means holding the powder or granular material scattered from the supply port in the receiving member.

[0018] “The powder or granular material can be supplied from the supply port” means that the powder or granular material discharged from the supply port can be supplied without being hindered by the receiving member.

[0019] The present invention preferably comprises a plurality of hoppers radially arranged about the main body, with the supply port oriented toward the center of the main body, and a structure detachably connected to the main body. This structure allows the hoppers included in the powder and granular material supply device to be replaced with other hoppers, simplifying the process of switching from the powder and granular material supplied by the powder and granular material supply device to another powder and granular material. Furthermore, the hoppers being detachably connected to the main body improves the maintainability of the powder and granular material supply device.

[0020] In the present invention, when the supply unit supplies the powder or granular material, the powder or granular material accumulated in the receiving member is preferably supplied. This configuration allows the supply of powder or granular material accumulated in the receiving member, thereby improving material utilization. Furthermore, the operation of removing the powder or granular material accumulated in the receiving member is unnecessary. Furthermore, the receiving member can be moved from the second position to the first position while empty, thereby preventing the powder or granular material from scattering from the receiving member.

[0021] In the present invention, the main body preferably includes a main body portion and a base supporting the main body portion, and the hopper is configured to be attachable to and detachable from the base. The main body portion preferably includes a control unit for controlling the supply of the powder or granular material by the supply unit and the driving of the drive unit. This configuration allows the supply of the powder or granular material to be performed in the area of ​​the base, thereby improving the efficiency of the powder or granular material supply and the control of the drive unit.

[0022] According to the present invention, with a simple structure, powder or granular material scattered from the supply port of the powder or granular material supply device can be caught when the supply of the powder or granular material is stopped, and the powder or granular material can be supplied without being hindered by the leakage prevention portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view showing the powder and granular material supply device in the first embodiment.

[0024] Figure 2 It is a plan view showing the powder and granular material supply device in the first embodiment.

[0025] Figure 3 This is a schematic diagram showing the leakage prevention portion when the powder or granular material is not supplied from the supply portion in the first embodiment.

[0026] Figure 4 This is a schematic diagram showing the leakage prevention portion when the powder or granular material is supplied from the supply portion in the first embodiment. DETAILED DESCRIPTION

[0027] (First embodiment)

[0028] Reference Figures 1 to 4 A powder or granular material supply device 1 (hereinafter referred to as the supply device 1 ) will be described. The supply device 1 has the following structure: a main body 2; a plurality of hoppers 3 that store powder or granular material and can supply the stored powder or granular material and are connectable to the main body 2; and a plurality of leakage prevention units 4 . The supply device 1 also includes a meter 6 and a container 7 . The following description will be made with reference to the accompanying drawings.

[0029] The main body 2 includes a main body portion 21 and a base 5 supporting the main body portion 21. The hopper 3 is detachably mounted on the base 5. The main body 21 includes a control unit 211. The control unit 211 is connected to the hopper 3 via the main body 2 to control the supply of powder and granular material by the supply unit 32 (described later) and the driving of the driving unit 42 (described later). This control can be performed manually or automatically through settings.

[0030] The base 5 includes a mounting portion 51 and a plurality of legs 52. The legs 52 include guide receiving portions 53. By engaging the guide receiving portions 53 with the guide portions 35 of the stocker 3 described later, the stocker 3 is connected to the main body 2. The base 5 of this embodiment can connect four stockers 3. The main body 21 is placed on the upper portion of the mounting portion 51 of the base 5, which is hollow inside.

[0031] The hopper 3 has an inlet 31 for inserting powder or granular material into the hopper 3, and a supply portion 32 for supplying the powder or granular material stored in the hopper 3 from the supply port 321. The position for supplying the powder or granular material from the supply port 321 to the container 7 is pre-set. In this embodiment, the supply portion 32 is a cylindrical screw feeder. The hopper 3 also has a plurality of casters 33, including casters with rotation stoppers at the bottom, an elastic member 34, and a guide portion 35 inserted into the main body 2. The casters 33 enable the hopper 3 to be moved.

[0032] The hoppers 3 are arranged radially in a plurality (here, four) with the main body 2 as the center, and are arranged so that the supply opening 321 faces the center of the main body 2. The rest of the supply section 32 is located in the interior space of the hopper 3, and the powder or granular material stored in the hopper 3 is supplied from the opening of the supply section 32 to the interior of the supply section 32.

[0033] The accumulator 3 is a structure that can be connected to the main body 2 in a detachable manner. For example, a mechanical insertion structure can be exemplified. The accumulator 3 is pressed relative to the main body 2, and the guide portion 35 is inserted into the main body 2, thereby installing the accumulator 3 on the main body 2. The accumulator 3 is pulled out from the main body 2, and the guide portion 35 is pulled away from the main body 2, thereby detaching the accumulator 3 from the main body 2. At this time, when the accumulator 3 is installed on the main body 2, the guide portion 35 is inserted into the main body 2 and engages with the guide receiving portion 53. In this way, the accumulator 3 and the main body 2 are fixed, and the direction of the supply port 321 can be prevented from being deviated. The elastic component 34 is a component that has elasticity and buffers impact. It is located on the outside of the guide portion 35 and contacts the main body 2 when the accumulator 3 is installed on the main body 2. The elastic component 34 can prevent the accumulator 3 itself from contacting the main body 2 and being damaged when the accumulator 3 is subjected to an unexpected impact from the outside.

[0034] The hopper 3 is moved to the position for supplying powder or granular material, and the guide portion 35 of the hopper 3 and the front end of the supply portion 32 including the supply port 321 are pressed into the interior of the base 5 of the main body 2, and the rotation prevention stopper of the caster 33 is activated to fix the position, and the main body 2 and the hopper 3 are connected with a cable (not shown), thereby completing the installation of the hopper 3 to the main body 2. On the other hand, the cable connecting the main body 2 and the hopper 3 is removed, the rotation prevention stopper of the caster 33 is released, the hopper 3 is pulled out from the main body 2, and the hopper 3 is moved from the position for supplying powder or granular material, thereby completing the separation of the hopper 3 from the main body 2. Therefore, the main body 2 and the hopper 3 can be easily loaded and unloaded, and the installed hopper 3 and other hoppers 3 can be easily replaced.

[0035] The hopper 3 can be replaced with another hopper 3, making it easier to switch the powder or granular material to be supplied. The hopper 3 can be detached from the main body 2, allowing maintenance to be performed while the hopper 3 is detached from the main body 2, thereby improving the maintainability of the supply device 1. For example, if the supply unit 32 or the leakage prevention unit 4 fails, it can be easily repaired or replaced.

[0036] The leakage prevention unit 4 includes a receiving member 41 capable of catching powder or granular material scattered from the supply port 321, and a driving unit 42 for moving the receiving member 41. The receiving member 41 is a box-shaped member having an opening 411 opened at the top. The leakage prevention unit 4 is a member extending and protruding in the transverse direction. The leakage prevention unit 4 of this embodiment is arranged below the supply unit 32, and one end is fixed to the leg 52 of the base 5. However, the installation position is not particularly limited, and any position can be adopted as long as the receiving member 41 can be located in the first position A and the second position B described later.

[0037] The receiving member 41 is connected to the driving unit 42 in a state where the opening 411 faces upward. This allows the receiving member 41 to receive powder or granular material falling from above.

[0038] The receiving member 41 is preferably shaped such that the opening 411 expands upward. This can enhance the effect of preventing the powder or granular material from leaking out of the supply port 321 of the supply unit 32.

[0039] The shape of the receiving member 41 is not particularly limited as long as it has an opening 411 and can receive the powder or granular material discharged from the supply port 321. Examples thereof include a cube, a circle, an ellipsoid, and a polygonal body with the opening 411 facing upward.

[0040] The size of the receiving member 41 is not particularly limited as long as it is large enough to receive the powder or granular material scattered from the supply port 321 , but is determined from the viewpoint of preventing interference with other receiving members 41 or other components.

[0041] The material of the receiving member 41 is not particularly limited, and existing materials can be appropriately used according to the characteristics of the powder or granular material. For example, existing thermosetting resins, thermoplastic resins, metal materials such as stainless steel can be used.

[0042] The drive unit 42 is capable of moving connected components. In this embodiment, the drive unit 42 is a power cylinder, and the receiving component 41 is connected to the front end of a piston rod 421 extending from the power cylinder via an L-shaped component. Furthermore, by using a power cylinder, the receiving component 41 can be moved using hydraulic or pneumatic pressure. Examples of the drive unit 42 include, but are not limited to, a power cylinder and a motor.

[0043] The receiving member 41 can be moved to the first position A (a position capable of receiving the powder or granular material scattered from the supply port 321) along the axial direction X of the supply portion 32 by the driving portion 42. Figure 3 ) and a second position B (a position where powder or granules can be supplied from the supply port 321, see Figure 4The supply port 321 is located above the receiving member 41 at the first position A and is located obliquely above and in front of the front wall of the receiving member 41 at the second position B.

[0044] The drive unit 42 and the supply unit 32 are a power cylinder and a cylindrical screw feeder, respectively. The piston rod 421 of the power cylinder can be extended and retracted in the same direction as the axial direction X of the screw of the screw feeder (not shown). The receiving member 41 connected to the front end of the piston rod 421 of the power cylinder serving as the drive unit 42 is movable in the same direction as the axial direction X of the screw of the screw feeder, thereby being able to move to a first position A and a second position B.

[0045] like Figure 3 As shown, when the supply portion 32 does not supply powder or granular material, the receiving member 41 is located at the first position A capable of receiving the powder or granular material scattered from the supply port 321 by the driving portion 42. Figure 2 、 Figure 3 As shown, the receiving member 41 of the leakage prevention portion 4 can receive the powder or granular material scattered from the supply port 321 .

[0046] like Figure 4 As shown, when the supply unit 32 supplies the powder or granular material, the receiving member 41 is positioned by the driving unit 42 at the second position B where the powder or granular material can be supplied from the supply port 321 .

[0047] The measuring device 6 and the measuring container 7 are arranged inside the base 5. The measuring container 7 can store powder or granular material and is placed above the measuring device 6. At this time, the hopper 3 is attached to the main body 2 with the vicinity of the front end of the supply portion 32, including the supply port 321, inserted into the interior of the base 5. The supply port 321 is located above the container 7 and above the upper opening 71 of the container 7, which serves as a location for supplying powder or granular material into the container 7. The receiving member 41 can be moved above the upper opening 71 and below the supply port 321.

[0048] The weight of the powder or granular material supplied from the supply device 1 and stored in the container 7 can be measured by the meter 6. By connecting the main body 2 and the meter 6 with a cable (not shown), the supply flow rate of the powder or granular material supplied from the hopper 3 can also be controlled by the main body 2 according to the weight of the powder or granular material stored in the container 7 measured by the meter 6. The meter 6 can also be a meter having a conveyor capable of conveying the container 7 on its upper portion. By adopting such a meter 6, the conveyance and installation of the container 7 become easy. As examples of the conveyor, a roller conveyor, a belt conveyor, etc. are exemplified. With respect to the supply device 1, the supply flow rate of the powder or granular material supplied from the hopper 3 can be controlled by the above-mentioned main body 2, and the receiving component 41 of the leakage prevention portion 4 can catch the powder or granular material scattered from the supply port 321, thereby being able to supply a specified weight of powder or granular material from the hopper 3 to the container 7 with high precision.

[0049] The operating sequence of the supply device 1 will be described. The hopper 3 is attached to the main body 2. The number of hoppers 3 attached to the main body 2 is arbitrary and can be determined based on the type and amount of the powder or granular material to be supplied. The powder or granular material to be stored in the hopper 3 can be added to the hopper 3 at any time, as long as it is before the powder or granular material is supplied. However, from the perspective of operability, it is preferably attached to the main body 2 after the powder or granular material has been added to the hopper 3.

[0050] When the hopper 3 is not attached to the main body 2, the receiving member 41 of the leakage prevention unit 4 is located in the first position A. Even when the hopper 3 is attached to the main body 2, as long as the supply of powder or granular material from the hopper 3 has not yet begun, the receiving member 41 of the leakage prevention unit 4 is similarly located in the first position A. Thus, even if powder or granular material spills from the supply port 321 when the hopper 3 is attached to the main body 2, the powder or granular material is caught by the receiving member 41 located in the first position A, thereby preventing the powder or granular material from leaking out.

[0051] The control unit 211 of the main body 2 is operated to supply powder or granular material from the hopper 3 mounted on the main body 2. At this time, the receiving member 41 located below the hopper 3 for supplying powder or granular material is moved from the first position A to the second position B by the driving unit 42 before the powder or granular material is supplied from the supply port 321. This allows the powder or granular material to be supplied from the hopper 3 without being obstructed by the receiving member 41.

[0052] The supply of powder or granular material from the hopper 3 can be stopped manually or automatically. In this case, the receiving member 41 located below the hopper 3 for which the supply of powder or granular material is to be stopped is moved by the drive unit 42 from the second position B to the first position A after the supply of powder or granular material from the supply port 321 is stopped. Consequently, as in the aforementioned state where the supply of powder or granular material from the hopper 3 has not yet begun, even if powder or granular material falls from the supply port 321, it is caught by the receiving member 41 in the first position A, thereby preventing leakage of the powder or granular material. Unlike the hopper 3 for which the supply of powder or granular material is to be stopped, the receiving member 41 located below the other hopper 3 for which the supply of powder or granular material remains stopped remains in the first position A. Consequently, powder or granular material that falls from the supply port 321 of the other hopper 3 is caught by the receiving member 41, thereby preventing leakage of the powder or granular material.

[0053] The start and stop of the supply of the powder or granular material from the hopper 3 can be repeated any number of times according to the status of the supply operation. In this case, the receiving member 41 located below the hopper 3 is moved each time the supply of the powder or granular material from the hopper 3 is started or stopped, thereby similarly preventing leakage of the powder or granular material.

[0054] When powder or granular material is supplied from multiple hoppers 3, the powder or granular material is supplied sequentially from each hopper 3. At this time, the receiving member 41 located below the hopper 3 supplying the powder or granular material is located in the second position B, while the receiving member 41 located below the hopper 3 not supplying the powder or granular material is located in the first position A. This allows the weight of the powder or granular material supplied from each hopper 3 to the container 7 to be measured.

[0055] When the weighing device 6 determines that the weight of the powder or granular material stored in the container 7 has reached the set weight, the powder or granular material supply process is completed, the container 7 is unloaded, a new container 7 is set, and the next powder or granular material supply process is carried out.

[0056] After all the powder and granular material supply processing is completed, the hopper 3 is detached from the main body 2. At this time, the supply of powder and granular material from the hopper 3 is stopped, so the receiving member 41 located below the hopper 3 is located in the first position A. Therefore, even if powder and granular material scatters from the supply port 321 when the hopper 3 is detached from the main body 2, the powder and granular material is caught by the receiving member 41 located in the first position A, thereby preventing the powder and granular material from leaking out.

[0057] (Second embodiment)

[0058] In the second embodiment of the present invention, when the hopper 3 supplies the powder or granular material, the receiving member 41 located below the hopper 3 can also supply the powder or granular material stored in the receiving member 41 to the container 7 by rotating or the like.

[0059] The material utilization rate can be improved by supplying the powder or granular material stored in the receiving member 41. In addition, when the supply of the powder or granular material from the hopper 3 is stopped, the empty receiving member 41 can be moved from the first position A to the second position B, thereby preventing the powder or granular material from scattering from the receiving member 41.

[0060] The method for supplying the powder or granular material stored in the receiving member 41 is not particularly limited. For example, the receiving member 41 may be provided with a door on its bottom surface and opened, or the receiving member 41 may be rotated so that the powder or granular material stored in the receiving member 41 is dropped from the opening 411 and supplied.

[0061] The other structures of the powder and granular material supply device 1 of the second embodiment are the same as those of the supply device 1 of the first embodiment, and therefore the same reference numerals are used, and the description thereof is cited.

[0062] The operation sequence of the supply device 1 in this embodiment will be described. Operations other than the operation when supplying powder or granular material from the hopper 3 attached to the main body 2 are the same as those in the first embodiment, and the description thereof is therefore incorporated herein.

[0063] When supplying powder or granular material from the hopper 3 attached to the main body 2, the receiving member 41 located below the hopper 3, which supplies the powder or granular material, first rotates, thereby supplying the powder or granular material stored in the receiving member 41. The leakage prevention unit 4 then returns to its original position, returning the receiving member 41 to a state where the powder or granular material can be received. The drive unit 42 then moves the receiving member 41 from the first position A to the second position B before supplying the powder or granular material from the supply port 321. This allows the powder or granular material to be supplied from the hopper 3 without being obstructed by the receiving member 41.

[0064] The present invention is not limited to the above-described embodiment and can be modified without departing from the technical spirit of the present invention. Such modifications and equivalents are also included in the technical scope of the present invention. For example, while the number of hoppers 3 attached to the main body 2 is four in the above-described embodiment, an appropriate number such as one, two, three, or five can be selected. In the above-described embodiment, the leakage prevention portion 4 is used to measure the weight of the powder or granular material supplied to the container 7, but the present invention can also be applied to powder or granular material processing equipment for other purposes.

[0065] Description of Reference Numerals

[0066] 1...Powder and granular material supply device; 2...Main body; 21...Main body; 211...Control unit; 3...Hosting container; 31...Inlet port; 32...Supply unit; 321...Supply port; 33...Castor; 34...Elastic member; 35...Guide unit; 4...Leakage prevention unit; 41...Receiving member; 411...Opening; 42...Drive unit; 421...Piston rod; 5...Base; 51...Loading unit; 52...Leg; 53...Guide receiving unit; 6...Measuring device; 7...Container; 71...Upper opening; A...First position; B...Second position.

Claims

1. A powder and granular material supply device, characterized in that: The powder and granular material supply device comprises: main body; a plurality of storage containers for storing powder or granular material therein and capable of being connected to the main body; and Multiple leakage prevention parts, The hopper has: an input port, capable of inputting the powder or granular material into the interior of the hopper; and The supply unit has a supply port and supplies the powder or granular material stored in the hopper from the supply port. The leakage prevention portion includes: a receiving member capable of receiving the powder or granular material scattered from the supply port; and A driving unit moves the receiving component. The receiving member is movable by the driving unit to a first position where it can receive the powder or granular material scattered from the supply port, and a second position where it can supply the powder or granular material from the supply port. The supply port is arranged above the upper opening of the container for measuring the powder or granular material. The receiving member can be moved above the upper opening. When the supply unit does not supply the powder or granular material, the receiving member is located at the first position. When the supply unit supplies the powder or granular material, the receiving member is located at the second position.

2. The powder and granular material supply device according to claim 1, characterized in that: The stockers are arranged in a plurality radially around the main body, are arranged with the supply ports facing the center of the main body, and are detachably connected to the main body.

3. The powder and granular material supply device according to claim 1 or 2, characterized in that: When the supply unit supplies the powder or granular material, the powder or granular material stored in the receiving member is supplied.

4. The powder and granular material supply device according to claim 1 or 2, characterized in that: The main body includes a main body portion and a base supporting the main body portion, and the hopper is detachably mounted on the base. The main body portion includes a control portion for controlling the supply of powder or granular material by the supply portion and the driving of the driving portion.

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