WO2013122040A1

WO2013122040A1 - Powder injection device

Info

Publication number: WO2013122040A1
Application number: PCT/JP2013/053225
Authority: WO
Inventors: 康暢今西
Original assignee: 伸晃化学株式会社
Priority date: 2012-02-16
Filing date: 2013-02-12
Publication date: 2013-08-22
Also published as: JP2013166576A; JP5982130B2

Abstract

A powder injection device includes a main body unit (1) that injects pressurized gas which is introduced from an air supply pipe (12) as a gas mixture, along with powder (W) flowing down from a hopper (14), from an exhaust pipe (15), and the air supply pipe (12), the hopper (14), and the exhaust pipe (15) are connected to the main body unit (1). The main body unit (11), the air supply pipe (12), an adapter (13), the hopper (14), and the exhaust pipe (15) are assembled into a single unit and accommodated in a casing (20). A pressurized gas source (30) is mounted on the adapter (13) from outside of the casing (20), and a powder container (40) that accommodates the powder (W) is mounted on the hopper (14). Using the configuration, it is possible to stabilize the amount of the powder that is injected in the gas mixture.

Description

Powder injection device

The present invention relates to a powder injection device capable of injecting powder to the outside as a mixed gas together with a pressurized gas. However, the term “powder” as used herein refers to a powdery article in an arbitrary dry state such as cement, cosmetics, pharmaceuticals, and foods.

A powder injection apparatus has been proposed in which a pressurized gas is introduced into a tank that stores powder, and the powder is mixed with the pressurized gas and injected as a mixed gas (for example, Patent Documents 1 and 2).

The pressurized gas is, for example, liquefied gas or compressed gas from an aerosol container, and a nozzle for injecting the mixed gas is provided in the upper part of the tank. Therefore, the powder sprayed as a mixed gas from the tip of the nozzle can be attached and applied so as to be sprayed onto the object.

JP 2001-79459 A JP 2006-116510 A

According to such a conventional technique, the powder in the tank is mixed with the pressurized gas introduced into the tank, and injected as a mixed gas from the nozzle to the outside, but the amount of powder in the mixed gas is temporally There is a problem in that it tends to fluctuate irregularly, and it is not always easy to reliably apply and apply a predetermined amount of powder to an object. In addition, the powder tank needs to have a sufficiently large surplus capacity for introducing a pressurized gas to generate a mixed gas, and has a problem that it tends to be larger than necessary.

Therefore, in view of the problems of the prior art, an object of the present invention is to inject a pressurized gas as a mixed gas by providing a main body part separately from the powder container for introducing a compressed gas together with the powder. An object of the present invention is to provide a powder injection device capable of stabilizing the amount of powder to be produced and reducing the overall size and weight.

The configuration of the present invention for achieving such an object includes a main body, an air supply pipe connected to the main body, a hopper, an exhaust pipe, an adapter connected to the air supply pipe, a main body, an air supply pipe, an adapter, A casing that assembles and stores the hopper and the exhaust pipe integrally, the main body portion introduces pressurized gas from the air supply pipe, and injects it from the exhaust pipe as a mixed gas together with the powder from the hopper, and the casing The gist is that a pressurized gas source and a powder container can be detachably attached to the adapter and the hopper, respectively, and the front end of the exhaust pipe is opened at the front.

The main body includes a first port for an air supply pipe, an intermediate port for a hopper, and a second port for an exhaust pipe. The first and second ports are bent in a V shape and communicate with each other. The port can open toward the bending point of the communication portion of the first and second ports, and the axial centers of the first and second ports can open outward.

Also, a bellows type air pump that can be operated by one hand with a hand holding the casing may be used as a pressurized gas source.

According to the configuration of the invention, when the pressurized gas from the air supply pipe is introduced, the main body unit mixes the powder from the hopper to generate a mixed gas, and discharges the powder from the exhaust pipe to the outside. Can be injected. At this time, the pressurized gas is supplied from the outside of the casing through a supply pipe by a pressurized gas source attached to the adapter, and the powder is supplied from the outside of the casing through a hopper from a powder container attached to the hopper. Supplied. Therefore, for example, when the pressurized gas source is operated intermittently and an operation period in which the pressurized gas is supplied to the main body and an idle period in which no pressurized gas is supplied are alternately repeated, The body moves to the main body by a substantially constant amount, and during the operation period, the pressurized gas is injected as a mixed gas together with the powder transferred to the main body, and as a result, a substantially constant amount of powder for each operation period. Can be stably ejected to the outside. In addition, the powder container does not need to introduce pressurized gas directly or generate a mixed gas, and it is not necessary to provide an extra capacity. Can do.

However, as the pressurized gas source, an aerosol container using a compressed gas or a liquefied gas can be used in addition to a manual squeeze type air pump such as a bellows type or a balloon type. The casing is preferably formed in a size and shape that can be held with one hand even when the pressurized gas source is attached to the adapter and the powder container is attached to the hopper.

The main body is bent for a V-shape and communicates with the first and second ports for the air supply pipe and the exhaust pipe, and for the hopper that opens toward the bending point of the communication portion of the first and second ports. By providing an intermediate port, an almost constant amount of powder in the hopper is transferred toward the bending point of the main body during the rest period, and a mixed gas is generated by the pressurized gas from the first port during the operation period. Thus, the powder can be ejected to the outside by being discharged from the second port to the exhaust pipe. In addition, during the operation period, part of the pressurized gas flows into the hopper through the intermediate port and breaks the powder bridge so as to loosen the powder in the hopper, so that the hopper The powder inside can be reliably transferred to the main body. The intermediate port is provided between the first and second ports, and the main body includes the first and second ports, the intermediate port, and the V-shaped communication portion between the first and second ports. Is integrally molded in a compact.

The shaft center of the first and second ports opens outward at an acute angle or an obtuse angle, thereby smoothing the flow of pressurized gas at the inflection point and further stabilizing the amount of powder injected outside during each operation period Can be made. In addition, the axial center of a 1st, 2nd port may be arrange | positioned in the same plane with an intermediate | middle port, and does not need to be arrange | positioned in the same plane.

If a bellows-type air pump that can be operated with one hand with a hand that holds the casing is used for a casing that can be held with one hand, the powder can be conveniently sprayed with only one hand operation.

Overall assembly vertical section Whole exploded perspective view Exploded sectional view of main parts Expanded sectional view of the main part Usage diagram Operation explanatory diagram (1) Operation explanatory diagram (2) Main part structure explanatory drawing which shows other embodiment.

Hereinafter, embodiments of the invention will be described with reference to the drawings.

The powder injection device is constructed by assembling the main body 11, the air supply pipe 12, the adapter 13, the hopper 14, and the exhaust pipe 15 together in a casing 20 (FIGS. 1 and 2). The adapter 13 is for a bellows type air pump 30 as a pressurized gas source, and the hopper 14 is for a vial 40 as a powder container for storing the powder W.

The casing 20 is configured by connecting symmetrical dividing

members

21 and 21 so as to be opposed to each other. Each of the divided members 21 is provided with

storage spaces

21a, 21b,... 21e for the main body 11, the air supply pipe 12, the adapter 13, the hopper 14, and the exhaust pipe 15, as well as the divided members 21,

Connection portions

21f, 21f... For connecting 21 are formed.

The main body 11 has a first port 11a for the air supply pipe 12, a second port 11b for the exhaust pipe 15, and an intermediate port 11c for the hopper 14 (FIGS. 3 and 4). The first and

second ports

11a and 11b are bent and communicated with each other in a V shape, and the intermediate port 11c is located between the first and

second ports

11a and 11b, and the first and

second ports

11a , 11b is opened toward the bending point 11d of the communicating portion. The axial centers Ca and Cb of the first and

second ports

11a and 11b are arranged in the same plane together with the intermediate port 11c, open outward at an angle α <90 °, and angle β toward the bending point 11d, respectively. Bending symmetrically at> 90 ° and β ≦ 180 °. The axes Ca and Cb intersect at an angle γ≈90 ° at the bending point 11d. A trapezoidal leg plate 11 e having

triangular windows

11 f and 11 f is formed at the lower portion of the main body 11. However, the axial centers Ca and Cb of the first and

second ports

11a and 11b may be opened outward at an angle α ≧ 90 °, and the angle γ at the bending point 11d is set to 60 ° ≦ γ ≦ 140 °. It is not always necessary to arrange them in the same plane. Further, the bottom part below the bending point 11d is formed as a smooth curved surface, and no clear corners are provided.

The air supply pipe 12 is a flexible pipe material. One end of the air supply pipe 12 is connected to the first port 11a of the main body 11 (FIGS. 1 and 3). The other end of the air supply pipe 12 is connected to an adapter 13 for the air pump 30.

The adapter 13 has positioning

flanges

13a and 13a at both ends, a large-diameter portion 13b and a small-diameter portion 13c are formed between the

flanges

13a and 13a, and a discharge port 13d projects on the flange 13a on the small-diameter portion 13c side. It is a stepped cylindrical member to be provided. The tip of the air supply pipe 12 is connected to the discharge port 13d.

The air pump 30 is formed by projecting a cylindrical head 32 on a bellows-shaped body 31 and attaching a check valve 33 to the tip of the head 32. An air suction port 31a is opened on the bottom surface of the body portion 31, and the valve body 33a of the check valve 33 can be opened outward. When the air pump 30 closes the air suction port 31a and compresses the body portion 31 in the axial direction, the check valve 33 can be opened to eject pressurized air to the outside, and the air suction port 31a is opened to form the body portion 31. When the pressing force is released, the check valve 33 is closed and air is sucked through the air suction port 31a, so that the body 31 is automatically restored to its original shape. The adapter 13 has a large-diameter portion 13b formed with a plurality of steps 13e that match the outer shape of the head 32 with the check valve 33 of the air pump 30, and the adapter 13 has a large head 32. The air pump 30 can be detachably mounted by being fitted to the diameter portion 13b.

The hopper 14 has a mounting ring 14b formed at the upper end on the large diameter side of the funnel-shaped hopper body 14a. The lower end of the hopper main body 14a on the small diameter side can be connected by being inserted into the intermediate port 11c of the main body 11, and a concave groove 14c that fits the mouth ring 41 of the vial 40 is formed inside the mounting ring 14b. Has been. The vial bottle 40 can store a predetermined amount of the powder W, and can seal the mouth portion via the rubber stopper 42. After the rubber stopper 42 is removed and opened, the mouth ring 41 is attached to the hopper 14. And is detachably mounted on the hopper 14. Further, the upper end portion of the hopper main body 14a that forms the inner diameter side of the concave groove 14c is adapted to the diameter of the vial bottle 40, and the inner surface is expanded in an upward tapered shape.

The exhaust pipe 15 is a flexible pipe material similar to the air supply pipe 12. One end of the exhaust pipe 15 is connected to the second port 11 b of the main body 11. The front end of the exhaust pipe 15 is opened projecting linearly from the front portion of the casing 20. However, the length of the exhaust pipe 15 may be matched with the front end of the casing 20.

The main body 11, the air supply pipe 12, the adapter 13, the hopper 14, and the exhaust pipe 15 are assembled together and stored in the casing 20 (FIGS. 1 and 2). At this time, the adapter 13 is fixed to the storage space 21c on the casing 20 side via the

flanges

13a and 13a, and the main body 11 has the leg plate 11e seated on the bottom surface of the storage space 21a. The hopper 14 is fixed by fitting the shape of the storage space 21d to the outer shape of the hopper main body 14a and fitting the attachment ring 14b into the engaging recess at the top of the storage space 21d. The air pump 30 and the vial 40 containing the powder W can be detachably attached to the adapter 13 and the hopper 14 from the outside of the casing 20, respectively. The supply pipe 12 and the exhaust pipe 15 are appropriately bent in the corresponding

storage spaces

21b and 21e, respectively.

In addition, each division member 21 of the main-body part 11, the adapter 13, the hopper 14, and the casing 20 is integrally molded by the appropriate plastic material, respectively. The same applies to the body 31 with the head 32 and the check valve 33 of the air pump 30.

In such a powder injection device, the air pump 30 and the vial bottle 40 can be attached to the adapter 13 and the hopper 14 from the outside of the casing 20, respectively, and the gripping portion at the rear of the casing 20 can be gripped and held with one hand ( FIG. 5). Further, when the body portion 31 is repeatedly pushed in the axial direction while opening and closing the air suction port 31a on the bottom surface of the air pump 30 using the thumb of the hand holding the casing 20 (in the direction of the arrow in FIG. 5), the air pump 30 applies the pressure. Pressurized air as pressurized gas is intermittently generated, and the air pump 30 can be used as a pressurized gas source.

In the rest period in which the pressurized air from the air pump 30 is not generated, the powder W in the vial 40 flows down toward the bending point 11d of the main body 11 through the hopper 14 (FIG. 6A). )), The powder W moving into the main body 11 is regulated to a substantially constant amount (FIG. 1). This is because when a certain amount of the powder W accumulates in the main body 11 and closes the small-diameter opening at the lower end of the hopper 14, a bridge is formed at the lower end of the hopper 14, and no more flows down to the main body 11.

Subsequently, the air intake port 31a of the air pump 30 is closed and the body portion 31 is compressed (in the direction of arrow K1 in FIG. 6 (B)), and the pressurized air from the air pump 30 is generated for the operation period. 11 and the powder W accumulated in 11 can be injected outside from the exhaust pipe 15 as a mixed gas (in the direction of arrow K2 in the figure). At this time, a part of the pressurized air from the air pump 30 flows into the hopper 14 (in the direction of arrow K3 in the figure) and breaks the powder W bridge so as to loosen the powder W in the hopper 14. To do.

Therefore, by repeating the same operation below, the powder W in the vial 40 can be sprayed to the outside by a substantially constant amount every operation period, and can be applied to the object and applied. Note that the amount of powder W that flows down from the hopper 14 to the main body 11 during each suspension period of the air pump 30, that is, the amount of powder W that is injected outside from the exhaust pipe 15 during each operation period of the air pump 30 is In the case where the vial bottle 40 and the hopper 14 on the casing 20 are held in the vertical direction (FIG. 7A) or tilted from the vertical direction (FIG. 7B), the change is practically almost the same. Absent. Further, since the powder W in the hopper 14 is loosened during the operation period, the injection amount of the powder W for each operation period is hardly changed regardless of the fluidity of the powder W.

In the above description, an appropriate additional nozzle 16 can be attached to the tip of the exhaust pipe 15 in order to regulate the injection range of the powder W (FIG. 8). For example, FIGS. 8A and 8B are a front view and a half sectional side view of the cylindrical throttle-shaped additional nozzle 16, and FIGS. 8C and 8D are fan-shaped diffusion-type additional nozzles. It is the front view of a nozzle 16, and a half section side view.

Note that the air pump 30 as a pressurized gas source may be a balloon-type squeeze-type air pump instead of the bellows type, or an aerosol container using liquefied gas or compressed gas. Further, the vial 40 as a powder container may be any other type of container as long as it can be easily mounted on the upper end of the hopper 14.

The present invention is not limited by the above-described embodiments, and can be implemented with appropriate modifications within a range that can be adapted to the gist of the present invention, all of which are within the technical scope of the present invention. Is included.

This application claims the benefit of priority based on Japanese Patent Application No. 2012-31391 filed on Feb. 16, 2012. The entire contents of the specification of Japanese Patent Application No. 2012-31391 filed on February 16, 2012 are incorporated herein by reference.

The powder injection device according to the present invention can be widely and suitably applied as powder W to various dry powders such as cement, cosmetics, pharmaceuticals, and foods.

W ... powder Ca, Cb ... axial center 11 ... main body 11a ... first port 11b ... second port 11c ... intermediate port 11d ... bending point 12 ... air supply pipe 13 ... adapter 14 ... hopper 15 ... exhaust pipe 20 ... casing 30 ... Air pump

Claims

A main body, an air supply pipe, a hopper, an exhaust pipe connected to the main body, an adapter connected to the air supply pipe, and the main body, the air supply pipe, the adapter, the hopper, and the exhaust pipe are assembled and stored together. The main body portion introduces pressurized gas from the air supply pipe and injects it from the exhaust pipe as a mixed gas together with the powder from the hopper, and the casing includes the adapter, A powder injection apparatus, wherein a pressurized gas source and a powder container can be detachably attached to the hopper from the outside, respectively, and a front end of the exhaust pipe is opened at a front portion.
The main body includes a first port for the air supply pipe, an intermediate port for the hopper, and a second port for the exhaust pipe, and the first and second ports are bent and communicated in a V shape. The powder injection apparatus according to claim 1, wherein the intermediate port opens toward a bending point of a communication portion of the first and second ports.
3. The powder injection apparatus according to claim 2, wherein the axial centers of the first and second ports open outward.
The powder injection device according to any one of claims 1 to 3, wherein a bellows type air pump that can be operated with one hand by a hand holding the casing is used as a pressurized gas source.