JP7102244B2 - Granule spraying device - Google Patents

Description

The present invention relates to a powder or granular material spraying device.

In many cases, the powder or granular material spraying device for spraying the powder or granular material on the object to be sprayed is required to have high spraying accuracy of the powder or granular material such as the spraying amount and the uniformity of the spraying width. For example, Patent Document 1 discloses a powder supply device including a trough for transferring powder and a vibrator for vibrating the trough. This powder supply device has multiple powder transfer paths on the trough with different powder transfer cross-sectional areas, and ranges from ultra-mass transfer to ultra-trace transfer depending on the target transfer amount per unit time. It is also disclosed in the same document that the amount of transfer can be dealt with.

Patent Document 2 discloses a powder or granular material supply device provided with a plurality of ultrasonic vibration transmitters provided corresponding to each of these different types of powder or granular material in order to mix different types of powder or granular material. Has been done. The document also discloses that each powder or granular material can be sent out quantitatively and continuously by the action of ultrasonic vibration.

Japanese Unexamined Patent Publication No. 2001-213508 JP-A-2002-273201

However, although the powder supply device described in Patent Document 1 can control the amount of powder or granular material sprayed, there is no description about the control of the spray width and the spraying accuracy when a plurality of the devices are used. It has not been. Further, the powder or granular material supply device described in Patent Document 2 uses a plurality of ultrasonic vibration transmitters to deliver each powder or granular material, but the interaction of vibrations between adjacent transmitters and the powder or granular material are produced. Due to disturbances such as electrostatic charging, the amount of powder or granular material sprayed may be uneven.

Therefore, the present invention is to provide a powder or granular material spraying device capable of eliminating the above-mentioned drawbacks of the prior art.

The present invention vibrates a hopper capable of storing powder or granular material inside and having a discharge port for the powder or granular material, and the powder or granular material located below the discharge port and discharged from the discharge port. A powder or granular material spraying device in which a plurality of powder or granular material spraying units including a transporting means for transporting and spraying to a spraying position by means are arranged in parallel on the same base plate.
Anti-vibration means are arranged between each of the powder or granular material spraying units and the base plate.
A powder or granular material spraying device in which a partition plate extending in the vertical direction is arranged between adjacent powder or granular material spraying units so as to separate the powder or granular material to be sprayed from the adjacent transport means. It is to provide.

According to the present invention, even when the powder or granular material spraying units are arranged and operated in parallel, the vibrations caused by the other powder or granular material spraying units are attenuated and the powder or granular material is sprayed stably and uniformly. Can be sprayed on the object.

FIG. 1 is a perspective view showing an embodiment of the powder or granular material spraying device of the present invention. FIG. 2 is an enlarged perspective view (corresponding to FIG. 1) of the discharge port and its vicinity in the powder or granular material spraying device of the present invention. FIG. 3 is an enlarged cross-sectional view of the outlet shown in FIG. 2 and its vicinity. FIG. 4 (a) is a perspective view showing the arrangement relationship of the trough, the partition plate and the conductive plate, and FIGS. 4 (b) and 4 (c) are enlarged models in the YZ plane showing the arrangement relationship of the trough and the partition plate. FIG. 4 (d) is an enlarged schematic view on an XZ plane showing the arrangement relationship of the trough, the partition plate, and the conductive plate. FIG. 5 is a cross-sectional view showing another embodiment of the powder or granular material spraying device of the present invention. 6A to 6C are schematic views showing the dimensions of the trough and the vibration generating means.

Hereinafter, the present invention will be described based on the preferred embodiment with reference to the drawings. FIG. 1 shows a powder or granular material spraying device 1 which is an embodiment of the powder or granular material spraying device of the present invention. The powder or granular material spraying device 1 conveys the powder or granular material P that can store the powder or granular material P inside and has the discharge port of the powder or granular material P and the powder or granular material P discharged from the hopper 2 to the spraying position. A plurality of powder or granular material spraying units 10 including the transporting means 3 for spraying the powder or granular material are arranged (hereinafter, the powder or granular material spraying unit 10 is also simply referred to as “unit 10”). The plurality of powder or granular material spraying units 10 are arranged in parallel on the same integrally molded base plate 5 via the vibration isolator means 6. In the following description, unless otherwise specified, one powder / granular material spraying unit 10 in the powder / granular material spraying device 1 will be described.

As shown in FIG. 1, the hopper 2 has a rectangular cuboid shape in which the upper base is connected to a storage portion 20 having a right-angled trapezoidal shape longer than the lower base and the lower end of the storage portion 20 and has a rectangular shape in a side view. A discharge unit 21 is provided. The hopper 2 shown in the figure is arranged at a position above the transport means 3 described later.

The storage unit 20 has a space inside which the powder or granular material P can be stored, and the powder or granular material P can be temporarily stored in the internal space. The powder or granular material P is supplied from the upper opening 90 of the storage unit 20 to the internal space of the storage unit 20 by a powder or granular material supply device (not shown) such as a screw feeder. The discharge unit 21 has a moving path for the powder or granular material P inside.

As shown in FIG. 2, a discharge port 23 for the powder or granular material P is formed at the lower end of the discharge unit 21 (the end opposite to the storage unit 20 side), and the internal space of the storage unit 20 and the discharge port 23 are formed. The exit 23 communicates with the exit 23 via a moving path. With such a configuration of the hopper 2, the powder or granular material P temporarily stored inside can be discharged from the discharge port 23 via the moving path. The powder or granular material P discharged from the discharge port 23 falls onto the trough 30, which will be described later.

As shown in FIGS. 1 and 2, the transporting means 3 has a trough 30 for receiving the powder or granular material P discharged from the hopper 2 and a vibration generating means 35 for vibrating the trough 30, which are hoppers. It is located below the discharge port 23 of 2. The trough 30 in the present embodiment is a plate-shaped member extending outward from each side edge of the vibration generating means 35 in the depth direction X and the parallel direction Y orthogonal to the depth direction X.

By vibrating the trough 30 by the vibration generating means 35, the transport means 3 can transport the powder or granular material P discharged onto the trough 30 from the discharge port 23 to the spraying position and spray it. In the powder or granular material spraying unit 10 of the present embodiment, the end portion 30a of the trough 30 located on the discharge port 23 side is the spraying position, and the powder is powdered along the transport direction R which is the direction along the depth direction X. The granular material P is conveyed to the end portion 30a by the vibration generating means 35. With such a configuration, the powder or granular material P can freely fall from the end portion 30a of the trough 30 and can be sprayed on an object to be sprayed (not shown) located below the trough 30. ing.

As shown in FIGS. 1 and 2, the trough 30 is arranged so that a predetermined distance is formed between the upper surface 30s of the trough 30 and the discharge port 23. From the viewpoint of suppressing clogging of the powder or granular material P and smoothly discharging the powder or granular material P from the discharge port 23 of the hopper 2, the distance G (see FIG. 3) between the upper surface 30s of the trough 30 and the discharge port 23 is the powder. With respect to the maximum particle size r of the granular material P, preferably 1 time or more, more preferably 1.5 times or more, further preferably 2 times or more, and preferably 10 times or less, more preferably 8 times or less, further. It is preferably 5 times or less. More specifically, the interval G is preferably 1 time or more and 10 times or less, more preferably 1.5 times or more and 8 times or less, and further preferably 2 times or more with respect to the maximum particle diameter r of the powder or granular material P. It is 5 times or less.

The maximum particle diameter r of the powder or granular material P can be measured by a method according to the shape thereof. The method for measuring the maximum particle size r of the powder or granular material P is, for example, a dry sieve method (JIS Z8815-1994), a dynamic light scattering method, a laser diffraction method, a centrifugal sedimentation method, a gravity sedimentation method, an image imaging method, or an FFF (field).・ Flow fractionation) method, electrostatic detector method, Coulter method, etc. can be mentioned. Of these, it is preferable to adopt the maximum particle diameter r measured by the laser diffraction method or the Coulter method from the viewpoint of reproducibility and accuracy.

The width L3 of the trough 30 (see FIG. 4A) may be the same or different.

As shown in FIG. 2, the trough 30 has a parallel direction Y orthogonal to the transport direction R (depth direction X) from the viewpoint of evenly propagating the vibration to the trough 30 and widening the spray width of the powder or granular material P. It is preferable that the rib 31 extending to the surface is provided. As shown in the figure, on the upper surface 30s of the trough 30, the rectangular cuboid rib 31 is formed so as to project upward in the vertical direction Z and over both side edges of the trough 30 in the parallel direction Y. Further, it is also preferable that the rib 31 is located behind the discharge port 23 in the transport direction R. The cross-sectional shape of the rib 31 in the XZ plane is not particularly limited, and may be any shape such as a semicircle, an ellipse, or a rectangle.

Further, as shown in FIG. 4A, it is also preferable that the trough 30 is provided with side walls 32, 32 protruding from the side edge thereof toward the hopper 2. By providing the side wall 32 on the trough 30, it becomes possible to more reliably receive the powder or granular material P discharged from the discharge port 23 of the hopper 2 by the trough 30, and the received powder or granular material P can be received at the spraying position. The inconvenience of being unintentionally sprayed from a direction other than (the end portion 30a of the trough 30) is less likely to occur. The height of the side wall 32 (the length in the vertical direction Z) is more preferably equal to or greater than the distance G between the upper surface 30s of the trough 30 and the discharge port 23. The side wall 32 may project from an upper surface other than the side edge of the trough (not shown) instead of the embodiment shown in FIG. 4 (a).

The trough 30, the rib 31 and the side wall 32 may be made of the same material or may be made of different materials. The material used for these members is not particularly limited, and metals such as steel, stainless steel, and aluminum, ceramics, conductive or non-conductive plastics, and the like can be used.

Returning to FIG. 1, the vibration generating means 35 in the conveying means 3 is fixed in a state where the upper surface of the vibration generating means 35 and the lower surface of the trough 30 are in contact with each other, and the upper surface of the vibration generating means 35 is the trough 30. It is smaller than the area. The vibration generating means 35 includes a control unit (not shown) that controls the voltage and frequency applied to the means 35, and the control unit controls the frequency and amplitude of the trough 30, resulting in a result. It is possible to control the transport state such as the transport speed of the powder or granular material P on the trough 30.

Specifically, since the trough 30 does not vibrate when the vibration generating means 35 is not activated, the transport of the powder or granular material P on the trough 30 is stopped or suppressed. On the other hand, when the vibration generating means 35 is operated, the trough 30 fixed to the means 35 starts to vibrate. The stop or suppression of the transport of the powder or granular material P on the trough 30 is released, and the powder or granular material P is transported in the direction indicated by the reference numeral R in the figure. As a result, the powder or granular material P falls from the end portion 30a of the trough 30 located on the transport direction R side and is sprayed on the object to be sprayed. The object to be sprayed may be continuously transported.

The vibration generating means 35 is not particularly limited as long as it can generate vibration capable of transporting the powder or granular material P on the trough 30 in a desired direction. For example, a piezoelectric element such as piezoelectric ceramic, a vibration feeder, or the like can be used. Can be used. The frequency of the vibration generating means 35 is not particularly limited, but is preferably 50 Hz or higher, more preferably 100 Hz or higher, and preferably 500 Hz from the viewpoint of transportability of powder or granular material, uniformity of spraying, and quantitativeness. Hereinafter, it is more preferably 300 Hz or less, more specifically, preferably 50 to 500 Hz, still more preferably 100 to 300 Hz.

From the viewpoint of achieving both stable and uniform spraying of the powder or granular material P and equipment maintenance of the powder or granular material spraying device 1, the interval W1 between the troughs 30 in the adjacent powder or granular material spraying units 10 (FIG. 4A). And (b)) can be appropriately changed according to the type of powder or granular material to be sprayed and the distance at which the powder or granular material is dropped, but from the viewpoint of preventing interference between the troughs 30, the interval W1 is a trough. It is preferable that the total amplitude value in the Y direction of 30 or more and the thickness of the partition plate 40 described later or more. For example, in the present embodiment, the total amplitude value of the trough 30 in the Y direction is about 0.1 mm, and the thickness of the partition plate 40 is 0.5 mm. Therefore, the interval W1 is set to at least 0.6 mm or more. be able to. The intervals W1 may be the same or different.

As described above, the powder / granular material spraying unit 10 transports the powder / granular material P to a predetermined spraying position by the vibration generated by the vibration generating means 35, and sprays the powder / granular material P. When the powder or granular material spraying unit 10 having such a mechanism is used alone, the amount and width of the powder or granular material P to be sprayed do not change so much with the passage of time, and stable and uniform spraying is possible. It has become. On the other hand, from the viewpoint of improving the manufacturing efficiency of the product, when a plurality of powder or granular material spraying units 10 are arranged in parallel and each unit 10 is operated at the same time to spray the powder or granular material P, the powder or granular material P is generated from the unit 10. The vibrating vibration propagates to the other unit 10, and the amount and width of the powder or granular material P sprayed may fluctuate greatly in a certain period due to the interaction of the vibrations, and the spraying accuracy may decrease. In particular, when the adjacent powder or granular material spraying units 10 are operated at the same time, this fluctuation becomes remarkable.

From the viewpoint of suppressing such fluctuations and stably and uniformly spraying the powder or granular material P, as shown in the figure, between the unit base 7 and the base plate 5 in the powder or granular material spraying unit 10, It is preferable that the anti-vibration means 6 is arranged. The vibration isolator 6 is for preventing the vibration generated in each unit 10 from propagating to the other units 10 via the base plate 5. The anti-vibration means 6 of the present embodiment has a configuration in which a plurality of columnar members are arranged between the unit base 7 and the base plate 5. By having the anti-vibration means 6, even when the powder or granular material spraying units 10 are arranged and operated in parallel, the vibration generated from each unit 10 is attenuated and the powder is stably and uniformly powdered. The granules can be sprayed on the object to be sprayed.

As described above, the vibration isolator 6 is for preventing the vibration generated from each unit 10 from propagating to the other units 10 via the base plate 5. As the anti-vibration means 6, a material capable of reducing the propagation of vibration can be used. For example, the elasticity of an organic elastic member, a spring or the like using an anti-vibration material such as natural rubber, urethane rubber, nitrile rubber or chloroprene rubber can be used. It can be used as a mechanical element having or in combination thereof. As the other anti-vibration means 6, a viscous mechanical element can be used, and as an example thereof, a member having a vibration damping mechanism such as a dashpot may be used. Of these, it is preferable to use nitrile rubber as the vibration isolating means 6 from the viewpoint of effectively suppressing the propagation of vibration of the powder or granular material spraying unit 10, and from the viewpoint of achieving both prevention of vibration propagation and static elimination. It is more preferable to use conductive nitrile rubber. These can be used alone or in combination of two or more.

When a member made of the above-mentioned anti-vibration material is used as the anti-vibration means 6, the shape thereof is, for example, a cylinder such as a cylinder, a square cylinder, a truncated cone cylinder, a columnar shape, a prismatic shape, or a truncated cone shape. Examples thereof include a columnar shape such as a semi-cylindrical shape, a sheet shape, and a flat plate shape. When the anti-vibration means 6 has a cylindrical shape or a columnar shape, its axial direction may be along the upper surface of the base plate 5 or may be in the vertical direction. These can be arranged individually or in combination.

As shown in FIG. 1, it is preferable that the partition plate 40 is arranged between the adjacent powder or granular material spraying units 10 at least at the spraying position of the powder or granular material P in the trough 30 and in the vicinity thereof. As shown in FIGS. 1, 4 (a) and 4 (b), the partition plate 40 extends in the vertical direction (Z direction in the same figure), and each powder sprayed from the trough 30 in the adjacent transport means 3. They are arranged so as to separate the granules P. As shown in FIG. 4C, the partition plate 40 is provided with an extension portion 41 whose upper portion extends toward the hopper 2 side from the upper surface 30s of the trough 30, and is arranged so as to separate adjacent troughs 30. You may. With such a configuration, even when a plurality of units 10 are operated at the same time, disturbances such as air resistance and airflow when the powder or granular material P is freely dropped are suppressed, and the powder or granular material P is suppressed. The body P can be sprayed stably and uniformly.

From the viewpoint of more stable and uniform spraying of the powder or granular material P, the length H4 of the partition plate 40 in the vertical direction Z (see FIG. 4A) is the distance from the upper surface of the trough 30 to the object to be sprayed. It can be adjusted as appropriate, but it is preferably 50% or more, more preferably 70% or more, and less than 100% with respect to the distance from the upper surface of the trough 30 to the object to be sprayed. It is preferable to have.

From the same viewpoint, the partition plate 40 has a maximum particle diameter r or more so that the distance D4 (see FIG. 4D) between the end portion of the trough 30 and the outer end portion of the partition plate is equal to or larger than the maximum particle diameter r in the depth direction X of the partition plate 40. It is preferable to arrange the particles so that they are arranged so as to be 10 times or more the maximum particle diameter r, further preferably 20 times or more the maximum particle diameter r, and the maximum particle diameter r. It is preferable to arrange the particles so as to be 150 times or less of the above. That is, it is preferable that the partition plate 40 extends from the end portion 30a of the trough 30 so as to be within the above-mentioned length range.

The distance W4 between the adjacent partition plates 40 (see FIG. 4A) can be appropriately changed according to the width L3 of the trough 30 and the distance W1. The intervals between the partition plates 40 may be the same or different from each other.

The material of the partition plate 40 is not particularly limited, and for example, a metal such as iron, stainless steel, or aluminum, a plastic such as acrylic resin, or the like can be used.

From the viewpoint of enabling more stable and uniform spraying of the powder or granular material P, the partition plate 40 is preferably attached to the conductive plate 50. As shown in FIGS. 1 and 4A, the conductive plate 50 extends in the vertical direction Z like the partition plate 40, and is arranged over the parallel direction Y of the units 10. It is also preferable that the conductive plate 50 is grounded. Further, from the viewpoint of not hindering the free fall of the powder or granular material P at the spraying position, the conductive plate 50 is along the transport direction R of the powder or granular material P in the transport means 3 as shown in FIG. 4 (d). It is also preferable that the powder or granular material P is located behind the end portion 30a of the trough, which is the spraying position of the powder or granular material P, in the transport direction R. Since the conductive plate 50 has such a configuration, the arrangement interval of the partition plates 40 is kept constant, and suction and repulsion due to static electricity generated between the powder particles and the powder particles and the partition plate are suppressed. Can be done. As a result, unevenness in the amount and width of the powder or granular material P sprayed from each unit 10 can be further suppressed.

The conductive plate 50 shown in the figure is attached to a single conductive plate 50 in which a plurality of partition plates 40 are integrally molded, but the distance between adjacent partition plates 40 is maintained at a desired distance. If possible, the number of conductive plates 50 is not particularly limited, and a plurality of conductive plates 50 may be used. As such an example, there is an embodiment in which a plurality of L-shaped conductive plates 50 having a partition plate 40 attached to one end of the conductive plate 50 in the parallel direction Y are arranged in parallel in the parallel direction Y. The material of the conductive plate 50 is not particularly limited as long as it is a conductive material, and examples thereof include metal materials such as stainless steel, aluminum, and copper, conductive ceramics, and conductive resins.

The dimensions of the conductive plate 50 are not particularly limited as long as the attached partition plate 40 can be fixedly held. The length of the conductive plate 50 shown in FIGS. 1 and 4 (a) in the parallel direction Y is substantially the same as the length in the parallel direction Y of the parallel units 10, and the length in the vertical direction Z is It is substantially the same as the length of the partition plate 40.

From the viewpoint of keeping the distance between the adjacent partition plates 40 constant and realizing stable spraying of the powder or granular material P, it is also preferable that the conductive plate 50 is fixed by another member. As such an example, for example, as shown in FIG. 4D, the conductive plate 50 can be attached to one end of the base plate 5 and fixed.

As shown in FIG. 5, from the viewpoint of removing static electricity generated by friction between the powder or granular materials P and improving the spraying accuracy of the powder or granular material P of the powder or granular material P, the powder or granular material is sprayed from the transport means 3. It is preferable to further have a static eliminator 60 for static eliminating P. Further, from the viewpoint of increasing the static elimination efficiency of the powder or granular material P, it is also preferable that the static elimination device 60 is arranged along the parallel direction Y of the units 10 (the front-rear direction of the drawing page). With such a configuration, the ionized gas A can be generated from the static eliminator 60 with respect to the powder or granular material P falling from the trough 30 and its vicinity. As a result, the powder or granular material P can be stably sprayed by suppressing suction and repulsion due to static electricity generated between the powder or granular material and the powder or granular material and the partition plate.

The static eliminator 60 may be arranged alone or in plurality. For example, the static elimination devices 60 may be arranged independently so that ionized gas can be generated in the entire parallel direction Y of all the units 10, and a plurality of static elimination devices 60 are arranged so that one static elimination device 60 is arranged for each unit 10. It may have been. As a mode of spraying the ionized gas, for example, the falling powder or granular material P may be sprayed linearly in the width direction Y (the same direction as the parallel direction Y of the unit 10), or a plurality of dots may be sprayed.

Examples of the method of generating the ionized gas in the static eliminator 60 include a method of generating ionizing gas such as soft X-rays, ultraviolet rays, and α rays, a method of generating using corona discharge, and a method of generating using high frequency. Can be mentioned. As the static eliminator 60, a commercially available product can also be used. Examples of such a commercially available product include an ionizer (MODEL ASIBS) manufactured by Kasuga Electric Works Ltd.

Due to its physical properties, the powder or granular material P is easily affected by the external environment such as air flow and humidity, and as a result, the spraying accuracy such as the spraying amount and the spraying width may be lowered. From the viewpoint of reducing the influence of the external environment such as air flow and improving the spraying accuracy of the powder or granular material P, as shown in FIG. 5, the entire powder or granular material spraying device 1 is housed in the isolation chamber 70. preferable. The isolation chamber 70 is hermetically formed so as to cover the entire powder or granular material spraying device 1 composed of a plurality of units 10, and is capable of blocking disturbance due to air.

The isolation chamber 70 may be a room that can accommodate the entire powder or granular material spraying device 1, or may be a box-shaped member that can be sealed. The material of the isolation chamber 70 is not particularly limited, and for example, a metal such as steel, stainless steel, or aluminum, a plastic such as acrylic resin, or the like can be used.

In the powder or granular material spraying device of the present invention, when spraying powder or granular material having deliquescent property such as magnesium chloride or powder or granular material composed of swelling and adhesive particles such as water-absorbent polymer, humidity and the like are used. The external environment may be affected, and the powder or granular materials may aggregate or adhere to each other, or adhere to the constituent members of the unit 10 such as the discharge port 23 and the trough 30. Due to these phenomena, the desired spraying accuracy of the powder or granular material P may not be maintained.

As shown in FIG. 5, the isolation chamber 70 is provided with the powder or granular material P, as shown in FIG. 5, from the viewpoint of stably and uniformly spraying the powder or granular material P even when the powder or granular material having deliquescent property or adhesiveness is to be sprayed. It is preferable that the dry air supply means 80 for supplying the dry air to the inside is provided. As the dry air supply means 80, a known means such as a compressor can be used, and the dry air supply means 80 may be provided at one place or a plurality of places.

Further, it is also preferable that the dry air supply means 80 is provided at a position where the dry air supplied from the means 80 is not directly blown onto the powder or granular material P. In the figure, the dry air supply means 80 is provided behind the unit 10, and instead of or in addition to the dry air supply means 80, is provided above the unit 10 (top surface of the isolation chamber 70) and the like. You may.

The dry air supplied from the dry air supply means 80 has, for example, a temperature of −5 ° C. or higher and 55 ° C. or lower, and a humidity of 1% RH or lower.

The powder or granular material P to be sprayed by the powder or granular material spraying apparatus of the present invention is, for example, organic powder such as paper powder, pulp, wood powder, activated charcoal, sugar, wheat powder, resin pellets, resin beads and water-absorbent polymer particles. Examples thereof include granules, powders of metal or metal salts such as metal powder, sodium chloride, potassium chloride, calcium chloride, magnesium chloride and lime, and powders of inorganic substances such as glass. These powders and granules may be made to have adhesiveness by further mixing, adding or coating a binder such as an adhesive. The shape of the powder or granular material is not particularly limited, and examples thereof include a spherical shape, a go stone shape, an elliptical shape, and a needle shape.

The object to be sprayed with the powder or granular material P is not particularly limited, and for example, a sheet-shaped base material or a laminate in which a composition or a functional material is applied or sprayed on the sheet-shaped base material. And so on. Examples of the sheet-like base material include fiber sheets, non-woven fabrics, resin films, woven fabrics, knitted fabrics, papers, etc. produced by various manufacturing methods, and laminates in which a plurality of the same or different types of these are laminated. Examples of the laminate in which the material is applied or sprayed on the sheet-like base material include a laminate in which an electrolyte such as salt is sprayed, a hot melt adhesive, a heat-generating composition containing an oxidizing metal, and water. Examples thereof include a laminate coated with.

As a method of spraying powder or granular material using the powder or granular material spraying device of the present invention, for example, particles of a water-absorbent polymer are sprayed on a sheet-like base material made of a continuously conveyed fiber sheet to absorb water. A method of forming a sheet can be mentioned. Further, on a sheet-like base material made of a fiber sheet that is continuously transported, powders and granules such as oxidizing metal particles, water-absorbent polymer particles, and a solid electrolyte are mixed alone or multiple times, or a mixture thereof. And spraying to form an exothermic composition. In addition to this, the method for producing a functional sheet by spraying the powder or granular material on the object to be sprayed can be used without particular limitation. In any case, the powder or granular material spraying device of the present invention can stably and uniformly spray the powder or granular material, so that the productivity of the target product is improved.

The powder or granular material spraying device of the present invention is not limited to the above embodiment. For example, from the viewpoint of equalizing the vibration propagating to the trough 30, it is also preferable to set the dimensions of the trough 30 and the rib 31 and the contact area between the trough 30 and the vibration generating means 35 within a specific range.

Specifically, as shown in FIGS. 6A to 6C, the length L2 of the rib 31 in the depth direction X is preferably 2% or more and 80% or less with respect to the length L1 in the parallel direction Y. More preferably, it is 5% or more and 50% or less. The length L1 is preferably 50% or more and 200% or less, and more preferably 80% or more and 100% or less with respect to the length L3 of the trough 30 in the parallel direction Y (see FIG. 6A).

Similarly, the area of the trough 30 in the XY plane is preferably 2.5 times or more, preferably 10 times or less, and more preferably 5 times or less the area of the vibration addition surface 35a in the vibration generating means 35. Further, it is preferably 2.5 times or more and 10 times or less, and more preferably 2.5 times or more and 5 times or less (see FIG. 6C).

Similarly, the length L5 of the vibration addition surface 35a in the parallel direction Y is preferably 5% or more and 150% or less, and more preferably 10% or more and 100% or less with respect to the length L3 of the trough 30. Further, the length L5 of the vibration addition surface 35a in the depth direction X is preferably 5% or more and 150% or less, and more preferably 10% or more and 100% or less with respect to the length L3 of the trough 30 (FIG. 6). (C).

Similarly, as shown in FIG. 6C, the vibration generating means 35 includes a trough center line CL2 that divides the width of the trough 30 in the parallel direction Y into two equal parts in the top view, and the vibration generating means in the parallel direction Y. It is also preferable that the width of the vibration adding surface 35a of 35 is arranged so as to coincide with the transport center line CL1 that divides the width into two equal parts.

1 Powder / granular material spraying device 2 Hopper 3 Transport means 5 Base plate 6 Anti-vibration means 7 Unit base 10 Powder / granular material spraying unit 30 Trough 31 Rib 35 Vibration generating means 40 Partition plate 50 Conductive plate 60 Static elimination device 70 Isolation room 80 Dry air supply Means X Depth direction Y Parallel direction (width direction)
Z vertical direction

Claims (4)

A powder or granular material spraying device in which a plurality of powder or granular material spraying units are arranged in parallel on the same base plate at intervals in a direction orthogonal to the transporting direction of the powder or granular material.
The powder or granular material spraying unit has a hopper capable of storing powder or granular material inside and having a discharge port for the powder or granular material, and the powder or granular material located below the discharge port and discharged from the discharge port. It is equipped with a transporting means that transports the body to the spraying position by a vibration generating means and sprays it.
Anti-vibration means are arranged between each of the powder or granular material spraying units and the base plate.
A powder or granular material spraying device in which a partition plate extending in the vertical direction is arranged between adjacent powder or granular material spraying units so as to separate the powder or granular material to be sprayed from the adjacent transport means. It also has a static eliminator
The powder or granular material spraying device according to claim 1, wherein the static eliminator is arranged along the parallel direction of the powder or granular material spraying unit. Conductive plates extending in the vertical direction are arranged in the parallel direction of the powder or granular material spraying unit.
When viewed along the transport direction of the powder or granular material in the transport means, the conductive plate is located behind the spray position in the transport direction.
The partition plate is attached to the conductive plate,
The powder or granular material spraying device according to claim 1 or 2, wherein the conductive plate is grounded. The entire powder or granular material spraying device is housed in the isolation chamber.
The powder or granular material spraying device according to any one of claims 1 to 3, wherein the isolation chamber includes means for supplying dry air to the isolation chamber.

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