JP2001205144A - Constant quantity discharge type hopper and constant quantity spraying device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constant quantity discharge type hopper capable of stably discharging a powdery material of constant quantity stored in a hopper main body. SOLUTION: A cylinder-shaped hopper main body 2, an elastomer film 3 provided so as to form a bottom surface of the hopper main body 2 and having a through-hole 3a, a cover body 4 provided detachably at an upper open part 2b of the hopper main body 2 and an air supply port 4a provided at the cover body 4 are provided, and a powdery material stored on the elastomer film 3 in the hopper main body 2 is discharged from the through-hole 3a provided at the elastomer film 3 by supplying pulsating vibrational wave of air having positive pressure from an air supply port 4a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quantitative discharge type hopper capable of quantitatively and stably discharging a powder material stored in a hopper body, and a quantitative spraying device using the same.

[0002]

2. Description of the Related Art A hopper is used for storing a powder material and supplying the powder material to a target place or apparatus.

FIG. 14 is a partially cutaway sectional view schematically showing a hopper for storing such a powder material.

[0004] The hopper 101 includes a hopper body 102.
And a material cutout valve 103 provided at a discharge port 102a of the hopper body 102.

[0005] The hopper body 102 has a conical portion 102c which is conically tapered downward at a lower portion thereof.
The powder material stored in the hopper body 102 is easily discharged from the discharge port 102a by the cone portion 102c. The member indicated by 104 is the hopper body 102
2 shows a lid that is detachably provided at the material input port 102b.

[0006]

However, in the conventional hopper 101, the powder material stored in the hopper body 102 may have a solidified portion Ps or a bridging phenomenon. Portion Ps or the bridging phenomenon causes the material outlet valve 1 to open even if the material cutout valve 103 is opened.
There was a problem that the amount of the powder material discharged from 02a varied.

Further, the solidified portion Ps and the bridging phenomenon occur, so that even if the material cutout valve 103 is opened, the discharge port 10
In some cases, no powder material is discharged from 2a.

In such a case, conventionally, the hopper body 1
Vibration is given to the hopper main body 102 by hitting the knocker 02 with a knocker or the like to break the solidified portion Ps or the bridge generated in the powder material stored in the hopper main body 102.

However, in such a method, if the solidified portion Ps or the bridge in the powder material is broken by hitting the hopper body 102 with a knocker, the discharge port 102 is suddenly broken.
a, a large amount of powder material may be discharged at one time, and the conventional hopper 101 discharges the powder material from the discharge port 102a quantitatively for a long time and stably. There is a problem that is difficult.

Further, such a hopper 101 is connected in the middle of the conduit, air for pneumatic transportation is supplied from one end of the conduit, and the material extracting valve 103 is opened or closed, so that the inside of the conduit is opened. As described above, even if a device that discharges the powder material stored in the hopper body 102 and sprays the powder material from the other end of the conduit with the air for pneumatic transportation is configured as described above, When the material hopper 101 is used, since the amount of the powder material discharged from the discharge port 102a when the material cutout valve 103 is opened varies, it cannot be used as a quantitative spraying device. It is.

The present invention has been made in order to solve the above-mentioned problems, and is intended to quantitatively, stably, and stably disperse a powder material stored in a hopper body 102 for a long time. It is an object of the present invention to provide a novel quantitative discharge hopper capable of discharging a material, and a novel quantitative spraying device using the quantitative discharge hopper.

[0012]

According to a first aspect of the present invention, there is provided a quantitative discharge type hopper according to the first aspect, wherein a hopper body having a cylindrical shape, an elastic film provided so as to form a bottom surface of the hopper body, having a through hole, and a hopper are provided. The upper opening of the main body is provided with a detachably provided lid and an air supply port provided on the hopper main body or the lid, and a positive pressure pulsating air vibration wave is supplied from the air supply port. Then, the elastic film was vibrated, and the powder material stored on the elastic film in the hopper body was discharged from the through-hole provided in the elastic film.

In this constant discharge hopper, when a positive pressure pulsating air vibration wave is supplied from the air supply port, the elastic film vibrates due to the positive pressure pulsating air vibration wave.

Due to the vibration of the elastic film, the powder material stored in the hopper main body is discharged from the through holes provided in the elastic film.

The elastic film oscillates as long as the amplitude, wavelength, and frequency of the pulsating vibration air of positive pressure are constant.

That is, from the through holes provided in the elastic film,
The discharge amount of the powder material stored in the hopper main body depends on the pulsating vibration air of positive pressure. Therefore, if the pulsating vibration air of positive pressure supplied from the air supply port is kept constant, a constant amount of the powder material can always be discharged from the through-hole of the elastic film.

In other words, the constant-rate discharge hopper is capable of constantly and stably supplying a fixed amount of powder material from the through-hole of the elastic film for a long time, if the pulsating vibration air of positive pressure is kept constant. Can be discharged at the rate of

Further, in this fixed-quantity discharge type hopper, the through-hole of the elastic membrane has the same shape as the cone of the hopper body, so that the powder material stored in the hopper body can be used to the end without waste. It can be discharged from the through holes of the elastic membrane.

Further, in this fixed discharge hopper, the solidified portion and the bridge portion are not generated in the powder material stored in the hopper main body due to the vibration of the elastic film.

That is, in this fixed discharge hopper, since the solidified portion and the bridge portion are not formed in the powder material stored in the hopper body, the discharge amount from the discharge port is changed as in the conventional hopper. No such phenomenon occurs.

Further, in this fixed discharge hopper, since the discharge amount of the powder material discharged from the through hole of the elastic film depends on the pulsating vibration air of the positive pressure, it is supplied from the air supply port. , Positive pressure pulsating air oscillating wave conditions (amplitude, wavelength,
There is also an advantage that the discharge amount of the powder material discharged from the through-hole of the elastic film can be changed only by changing the waveform, the frequency, and the like.

Furthermore, since the quantitative discharge type hopper is excellent in quantitativeness of the amount of the powder material discharged from the through hole of the elastic film, the through hole of the elastic film of the quantitative discharge type hopper is excellent. The provided side is connected to the middle of the conduit, and from one end of the conduit, a constant pressure air for pneumatic transportation or a pulsating air vibration wave of positive pressure is supplied, and from the other end of the conduit, the powder material is supplied. Can be sprayed from the other end of the conduit constantly and stably at a constant concentration of powder material.

[0023] The quantitative discharge type hopper according to claim 2 is
The elastic film of the fixed-quantity discharge hopper according to claim 1,
It is attached to the lower part of the hopper body by using an elastic film attaching device, the elastic film attaching device is provided with a pedestal having a hollow, and is provided so as to stand on the surface of the pedestal, and a push-up member having a hollow. A holding member having a hollow slightly larger than the outer periphery of the push-up member, and a surface outside the hollow formed in the pedestal, at a position outside the outer periphery of the holding member, formed on the pedestal on the surface of the pedestal. A V-groove provided so as to surround the hollow in a ring shape is formed, and a surface of the holding member facing the pedestal is fitted with the V-groove provided on the surface of the pedestal, and has a ring-shaped shape. , V
A protrusion in the shape of a letter is provided, a push-up member is placed on the surface of the pedestal, an elastic film is placed on the push-up member, and the pressing member is covered so as to cover both the push-up member and the elastic film. By tightening against the pedestal, the elastic film is pushed up by the push-up member in the direction of the holding member, so that the elastic film is stretched from the inside to the outer periphery, and the outer periphery of the elastic film stretched by the push-up member The portion is sandwiched between the outer periphery of the push-up member and the surface of the holding member that forms the hollow, a V-groove provided on the surface of the pedestal, and a V-shape provided on the surface of the holding member facing the pedestal. The upper surface of the holding member is attached to the lower portion of the cylindrical hopper body so as to be further stretched and clamped between the projections having the shape.

In the quantitative discharge type hopper according to the present invention, if the elastic film is not stretched evenly so as to form a bottom surface on the hopper body, when the pulsating air vibration wave of positive pressure is made constant, The vibration of the elastic film may not be constant, and the discharge amount of the powder material discharged from the through hole provided in the elastic film may vary.

In order to solve such a problem, the fixed-quantity discharge hopper attaches the elastic film to the hopper body by using an elastic film attachment.

In this elastic film mounting device, when the elastic film is placed on the push-up member placed on the pedestal and the holding member is tightened against the pedestal, the elastic film is moved by the push-up member. , And is pushed up in the direction of the holding member. As a result, the elastic film is extended from the inside of the elastic film to the outer peripheral side by being pushed up in the pressing member direction.

Initially, the elastic film stretched by the push-up member causes the pedestal to pass through the gap between the outer peripheral surface of the push-up member and the surface (inner peripheral surface) forming the hollow of the pressing member. And a V-shaped protrusion provided on the surface of the holding member facing the pedestal.

Further, when the pressing member is tightened to the pedestal by a tightening means such as a bolt, the elastic film is pushed up in the direction of the pressing member by the pushing member, and the outer peripheral surface of the pushing member is kept. And the hollow inner peripheral surface of the holding member. Further, by being pushed up by the push-up member in the direction of the holding member, a portion extended from the inside of the elastic body film to the outer peripheral side has a V-groove provided on the surface of the base and a surface of the holding member facing the base. Between the V-shaped projections provided on the front side. That is, in this elastic film attaching device, the elastic film is placed on the push-up member placed on the pedestal, and the pressing member is tightened against the pedestal. The elastic film is pushed up in the direction of the pressing member, whereby the elastic film is stretched from the inner side to the outer peripheral side, and furthermore, the outer peripheral portion of the elastic film stretched by the pushing member in this manner. As a result of being sandwiched between the V-groove provided on the surface of the pedestal and the V-shaped projection provided on the surface of the holding member facing the pedestal, the elastic membrane mounting fixture is pushed up on the pedestal. The elastic film can be uniformly stretched by a simple operation of placing the elastic film on the member and tightening the pressing member against the pedestal. Claim 3
The quantitative spraying device according to claim 1 is a quantitative spraying device using the quantitative discharge type hopper according to claim 1 or claim 2,
A hopper body of a fixed-quantity discharge hopper, which is provided with a conduit, is connected in the middle of the conduit, supplies air for pneumatic transportation from one end of the conduit, and is stored in the hopper body of the fixed-quantity discharge hopper. The powder material discharged into the conduit from the through-hole provided in the elastic membrane of the above was sprayed from the other end of the conduit together with air for pneumatic transportation.

In this quantitative spraying apparatus, since the quantitative discharge type hopper according to claim 1 or 2 is used, which is excellent in quantitativeness of the discharge amount of the powder material, a fixed amount of the powder material is discharged from the other end of the conduit. It is possible to stably spray a powder material having a predetermined concentration.

According to a fourth aspect of the present invention, there is provided a quantitative spraying device according to the third aspect, wherein the air for the pneumatic transportation is a pulsating vibration air of positive pressure.

In this fixed amount spraying device, the powder material discharged from the fixed amount discharge type hopper into the conduit is pneumatically transported to the other end of the conduit using the pulsating vibration air of positive pressure. Attachment and accumulation of powdered material in the conduit, as seen when supplying steady-pressure air into the conduit,
No blow-through phenomenon occurs.

Thus, the powder material is sprayed from the other end of the conduit while maintaining the concentration at the time when the powder material is discharged from the through-hole provided in the elastic film. Excellent in quantitative property of powder material sprayed from the other end. A quantitative spraying device according to claim 5 is a quantitative spraying device using the quantitative discharge type hopper according to claim 1 or 2, wherein the pulsating air generates a pulsating air vibration wave of a positive pressure. A pulsating air vibration wave generator having one end connected to the pulsating air vibration wave generator and branching on the way to form two branch pipes, one of which is a constant discharge hopper Is connected to an air supply port provided in the hopper main body or the lid body, and a hopper main body of a quantitative discharge type hopper is connected in the middle of the other branch pipe, and drives a pulsating air vibration wave generator. By,
From the end of one of the branch pipes, the powder material stored in the hopper body of the fixed discharge hopper and discharged into the conduit from the through hole provided in the elastic membrane of the fixed discharge hopper,
It was made to spray together with the pulsating air vibration wave of positive pressure generated by driving the pulsating air vibration wave generator. In this quantitative spraying device, since one pulsating air vibration wave generator is provided, the device configuration can be simplified.

In addition, in this quantitative spraying apparatus, if the pulsating air vibration wave generator is driven, the pulsating air vibration waves having the same phase and positive pressure can be supplied to the two branch pipes.

Thus, if the lengths of the two branch pipes are adjusted, the phase of the positive pressure pulsating air vibration wave supplied from the air supply port of the fixed discharge hopper and the phase of the other branch pipe,
The amplitude of the vibration of the elastic membrane can be increased or decreased by making the phase of the positive pressure pulsating air vibration wave the same or different at the connection between the other branch pipe and the fixed discharge hopper. Or you can. Also, the vibration of the elastic film can be similarly controlled by adjusting the pulsating air supply amounts to the two branch pipes.

In this quantitative spraying apparatus, the amplitude of the vibration of the elastic film is varied by adjusting the phase of the pulsating air vibration wave of the positive pressure, so that the concentration of the powder material sprayed from the end of the other branch pipe is increased. Can also be changed.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in more detail. FIG. 1 is a view schematically showing a fixed-quantity discharge hopper according to the present invention, and FIG.
FIG. 1 is an external perspective view schematically showing a quantitative discharge type hopper according to the present invention, and FIG. 1B is a schematic sectional view of the quantitative discharge type hopper shown in FIG.

The fixed-rate discharge hopper 1 has a cylindrical hopper body 2, an elastic film 3, and a lid 4 detachably provided at an upper opening (material inlet) 2b of the hopper body 2. And

FIG. 2 is a plan view schematically showing the elastic film 3.

The elastic film 3 is made of an elastic material such as synthetic rubber such as silicone rubber, and has a through hole 3a at the center thereof.
Having. In this example, the through-hole 3a of the elastic film 3 has a slit shape.

The lid 4 is detachably and hermetically attached to the upper opening (material input port) 2b of the hopper body 2.

The cover 4 is provided with an air supply port 4a.

The air supply port 4a is connected to an air pulsation wave generator 5 via a conduit T1.

The air pulsation wave generator 5 is connected to an air source 9 such as a blower via a conduit T2.
Is converted into a positive pressure air pulsation wave and supplied into the conduit T1. FIG. 3 is an explanatory view exemplifying a positive pressure air pulsation wave.

As shown in FIG. 3 (a), the pulsating vibration air of positive pressure supplied to the conduit T1 has a peak of positive amplitude, a valley of pulsating vibration of air, and a pulsation of atmospheric pressure. The vibration air may be an air vibration wave, or, as shown in FIG. 3B, the peak and the valley of the amplitude of the vibration air may be both positive pressure. The elastic film 3 may be provided so as to form the bottom surface of the hopper main body 2. In this example, the elastic film 3 is attached using the elastic film attachment 6. Hereinafter, the configuration of the elastic film attachment 6 will be described in more detail.

FIG. 4 is a perspective view schematically showing a state in which the elastic film 3 is attached to the elastic film attachment 6 used in the fixed discharge hopper 1. FIG. 5 is a perspective view showing the elastic member shown in FIG. FIG. 6 is an exploded perspective view schematically showing the configuration of the membrane attachment, and FIG. 6 is a cross-sectional view schematically showing the configuration of the elastic membrane attachment shown in FIG.

The elastic film attachment 6 includes a pedestal 62, a push-up member 63, and a holding member 64. Pedestal 6
2, a hollow h1 is provided, and a ring-shaped mounting surface S1 for mounting the push-up member 63 is provided on the outer periphery of the hollow h1. Further, the pedestal 62 is provided with a V-shaped groove Dv so as to surround the hollow h1 in a ring shape. The push-up member 63 has a hollow h2. In this example, as shown in FIG. 6, the push-up member 63 is provided with a stepped portion Q1 on its lower surface. When the push-up member 3 is placed on the pedestal 62, the stepped portion Q1 is It is arranged on the mounting surface S1.

In this example, when the push-up member 63 is placed on the pedestal 62, the step Q
A lower extension portion Q <b> 2 provided to extend below 1 is set to fit in the hollow h <b> 1 of the pedestal 62. That is, the lower extension Q2 of the push-up member 63 is precisely machined to have an outer diameter D2 equal to or slightly smaller than the inner diameter D1 of the hollow h1 of the pedestal 62. Further, in this example, the push-up member 63 is provided with an inclined surface extending from the upper side to the lower side when viewed in cross section on the outer periphery of the upper portion Q3.

The holding member 64 has a hollow h3. Also, a surface S64 of the holding member 64 facing the pedestal 62.
Is provided with a ring-shaped projection Cv when viewed in a plan view and a V-shaped projection Cv when viewed in a cross-section so as to fit into a V-groove Dv provided on the surface of the pedestal 62.

In FIGS. 4 and 5, the member indicated by 65 is
3 shows fastening means such as bolts.

The hole indicated by h4 in FIG.
The fixing hole of the fastening means 65 formed in the holding member 64 and the hole indicated by h6 are the fastening means 65 formed in the pressing member 64.
Are respectively shown. In FIG. 5, a hole indicated by h5 is formed in the pedestal 62, and fixing means (not shown), such as a bolt, for attaching the elastic film attachment 6 to a target device.
A fixing hole for attaching the elastic film attaching member 6 and a hole indicated by h7 are formed in the pressing member 64, and the elastic film attaching device 6 is fixed to a target device by fixing means such as bolts (not shown).
Respectively, fixing holes for mounting are shown.

In this example, the inner diameter D4 of the hollow h3 of the holding member 64 is equal to the outer diameter D3 of the push-up member 63, or
Precision machined to slightly larger dimensions.

Next, the elastic membrane 3 is attached to the elastic membrane attachment 6.
The procedure for mounting the will be described.

When attaching the elastic film 3 to the elastic film attachment 6, first, the push-up member 63 is placed on the surface of the pedestal 2.

Next, the elastic film 3 is placed on the push-up member 63.

Next, the pressing member 6 is placed on the pushing member 63 so as to cover both the pushing member 63 and the elastic film 3.
4 is placed. At this time, the fixing holes h formed in the pedestal 62
4 and each of the fixing holes h6... Formed in the pressing member 64 are aligned.

Next, each of the fastening means 65, such as bolts, is screwed into each of the fixing holes h4,. Then, the holding member 64 is tightened.

In the elastic film attachment 6, the elastic film 3 is placed on the push-up member 63 placed on the pedestal 62,
When the holding member 64 is tightened to the pedestal 62,
The elastic film 3 is pressed by the push-up member 63 into the holding member 6.
It is pushed up in four directions. As a result, the elastic film 3 is extended from the inside of the elastic film 3 to the outer peripheral side by being pushed up in the pressing member 64 direction.

At first, the push-up member 63
The stretched elastic film 3 is provided on the surface of the pedestal 62 via a gap between the outer peripheral surface Q3 of the push-up member 63 and the surface (inner peripheral surface) forming the hollow h3 of the pressing member 64. The V-shaped protrusion Cv provided on the surface of the holding member 64 facing the pedestal 62 of the pressing member 64 is inserted between the V-shaped groove Dv and the holding member 64.

When the pressing member 64 is further tightened to the pedestal 62 by each of the tightening means 65 such as bolts, the elastic film 3 is pushed up in the direction of the holding member 64 by the pushing-up member 63. In this state, the outer peripheral surface Q3 of the push-up member 63 and the hollow h3 of the pressing member 64
Between the inner peripheral surface of the body. And the push-up member 6
3, the portion extended from the inside of the elastic film 3 to the outer peripheral side by being pushed up in the direction of the pressing member 64 becomes the V groove Dv provided on the surface of the pedestal 62 and the pedestal 62 of the pressing member 64. Is sandwiched between a V-shaped projection Cv provided on the surface facing the. That is,
In the elastic film attachment 6, the elastic film 3 is placed on the push-up member 63 placed on the pedestal 62, and the pressing member 6
4 is tightened against the pedestal 62, the elastic membrane 3
Is pushed up in the direction of the holding member 64 by the push-up member 63, whereby the elastic film 3 is stretched from the inner side to the outer peripheral side. The stretched outer peripheral portion of the elastic film 3 is provided with a V groove D provided on the surface of the pedestal 62.
v, and the pressing member 64 is sandwiched between the V-shaped protrusions Cv provided on the surface facing the pedestal 62, and as a result, in the elastic film attaching tool 6, the push-up member 63 is placed on the pedestal 62. With a simple operation of placing the elastic film 3 and tightening the pressing member 64 to the pedestal 62, the elastic film 3 can be brought into a taut state (a state in which the elastic film 3 is put in a uniform state). .

Further, in the elastic film attaching device 6, an inclined surface Q3 which extends from the upper side to the lower side when viewed in cross section is provided on the outer periphery of the push-up member 63. Since the inclined surface Q3 is an important element in the elastic film attachment 6, this operation will be described in detail below.

That is, in the elastic film attaching device 6, the inclined surface Q 3 extending from the upper side to the lower side when viewed in cross section is provided on the outer periphery of the push-up member 63. As a result, the portion extended from the inside of the elastic film 3 to the outer peripheral side becomes the pedestal 6.
2 easily transitions between a V-shaped groove Dv provided on the surface of the ring member 2 and a V-shaped projection Cv provided on the surface of the holding member 64 facing the base 62 in a ring shape. .

More specifically, the push-up member 6
When the outer diameter of the inclined surface Q3 is sufficiently smaller than the inner diameter D4 of the hollow h3 of the holding member 64, the elastic film 3
Are the inclined surface Q3 of the push-up member 63 and the holding member 64
Since there is a sufficient gap (interval) between the surface forming the hollow h3 and the elastic member 3
The portion extended from the inside to the outside of this is easily guided through the gap (interval) to the surface of the pedestal 62 in the direction of the V-shaped groove Dv provided in a ring shape.

Further, the inclined surface Q3 provided on the outer periphery of the push-up member 63 is formed so that the lower side expands from the upper side when viewed in cross section. Is guided along the surface of the inclined surface Q3 in the direction of the V-shaped groove Dv provided on the surface of the pedestal 62 in a ring shape. Then, each of the fastening means 65...
The fixing member h is screwed into each of the fixing holes h4,..., And the holding member 64 is tightened to the pedestal 62, so that the outer diameter of the inclined surface Q3 of the push-up member 63 is increased. Gradually approaches the inner diameter D4 of the hollow h3 of the pressing member 64, and the gap (interval) between the inclined surface Q3 of the inclined surface Q3 of the push-up member 63 and the surface forming the hollow h3 of the pressing member 64 is increased. When the thickness (thickness) of the elastic film 3 is approximately equal to the thickness (thickness) of the elastic film 3, the elastic film 3
And the surface of the pressing member 64 forming the hollow h3.

According to the above-described operation, the elastic film attachment 6 places the elastic film 3 on the push-up member 63 mounted on the pedestal 62, and then tightens the fastening means 65 such as bolts. The holding member 64 is mounted on the pedestal 62 by using
The elastic film 3 can be uniformly stretched by a simple operation of tightening the elastic film 3.

When the pressing member 64 is tightened to the pedestal 62 by using each of the tightening means 65... Such as bolts, the inclined surface Q3 on the outer periphery of the push-up member 63,
The space between the pressing member 64 and the hollow inner peripheral surface gradually narrows, and the outer peripheral surface Q3 of the push-up member 63 and the pressing member 64
Is firmly held between the inner peripheral surface of the hollow h3 and the elastic film 3 after the pressing member 64 is tightened to the pedestal 62.

In the elastic film attachment 6, when the elastic film 3 is attached, the elastic film 3 is
A V-shaped protrusion Cv provided in a ring shape between the inclined surface Q3 of the holding member 64 and the surface forming the hollow h3 of the holding member 64, and the surface of the holding member 64 facing the pedestal 62; Since it is in a double locked state between the pedestal 62 and the V-shaped groove Dv provided in a ring shape, after the pressing member 64 is tightened to the pedestal 62, the elastic film 3 There is no slack.

Next, the operation of the fixed discharge hopper 1 will be described. FIG. 7 is an explanatory view schematically showing the operation of the fixed-quantity discharge hopper 1.

When using the constant-rate discharge type hopper 1, first, a powder material is stored in the hopper body 2.

Next, the lid 4 is hermetically attached to the hopper body 2 (see FIG. 1). When the air source (the air source 9 shown in FIG. 1) and the pulsating air vibration wave generator (the pulsating air vibration wave generator 5 shown in FIG. 1) are in a stopped state, the elastic film 3 is placed in the state shown in FIG. In the initial state as shown in a).
FIG. 7A shows a state in which the powder material is not stored in the hopper main body 2, so that the initial state of the elastic film 3 is expressed as a state that is straight in the lateral direction. However, in reality, the center of the elastic film 3 is curved downward due to the weight of the powder material stored in the hopper body 2, and the elastic film 3 is moved to a conventional hopper (see FIG. 14). (See cone section 102c shown in FIG. 14).

Next, the air source (the air source 9 shown in FIG. 1) and the pulsating air vibration wave generator (the pulsating air vibration wave generator 5 shown in FIG. 1) are driven, and the lid (the lid shown in FIG. 1) is driven. A pulsating vibration air of positive pressure is supplied from an air supply port (air supply port 4a shown in FIG. 1) provided in 4). When the supply amount of the positive pressure pulsating air vibration wave from the air supply port (the air supply port 4a shown in FIG. 1) is small (when the positive pressure pulsating air vibration wave is in a trough state of the amplitude). FIG. 7 shows the elastic film 3
As shown in FIG. 7B, from the initial state shown in FIG.
The center is curved downward.

Air supply port (air supply port 4a shown in FIG. 1)
When the supply amount of the pulsating air vibration wave of positive pressure is increased (a state in which the pulsating vibration air of positive pressure is going from the trough of the amplitude to the peak), the elastic film 3 As shown in FIG. 7C, the center is curved downward from the state shown in FIG. 7B.

Further, a state in which the supply amount of the positive pressure pulsating vibration air from the air supply port (the air supply port 4a shown in FIG. 1) is increased (the positive pressure pulsating vibration air wave becomes the peak of the amplitude) 7), as shown in FIG. 7D,
The center is curved downward from the state shown in FIG.

After that, the supply amount of the positive pressure pulsating vibration air from the air supply port (the air supply port 4a shown in FIG. 1) is reduced (the positive pressure pulsating vibration air becomes smaller in amplitude). When the elastic film 3 is in a state of going from a mountain to a valley), the state shown in FIG.

Further, the state in which the supply amount of the positive pressure pulsating vibration air from the air supply port (the air supply port 4a shown in FIG. 1) is smaller (the positive pressure pulsating vibration air wave has a smaller amplitude). When the elastic film 3 comes close to the valley), as shown in FIG.
The state shown in FIG.

Then, the state in which the supply amount of the positive pressure pulsating vibration air from the air supply port (the air supply port 4a shown in FIG. 1) is reduced (the positive pressure pulsating vibration air becomes the valley of the amplitude). 7), the elastic film 3 is in the state shown in FIG.

While the pulsating vibration air of positive pressure is being supplied from the air supply port (air supply port 4a shown in FIG. 1), the elastic film 3 has the center of the elastic film 3 as the antinode of the amplitude. Also,
Assuming that the peripheral portion of the elastic film 3 is an amplitude node, the center of the elastic film 3 is curved downward from the initial state shown in FIG. 7A to the state shown in FIG. From the state where the center of the elastic film 3 is curved downward as shown in FIG.
The vibration returning to the initial state shown in FIG.

The vibration of the elastic film 3 causes the elastic film 3
The powder material stored in the hopper body 2 is discharged from the through hole 3a provided in the hopper.

The elastic film 3 oscillates as long as the amplitude, wavelength, and frequency of the pulsating vibration air of positive pressure are constant.

That is, the through holes 3a provided in the elastic film 3
The discharge amount of the powder material discharged from the nozzle depends on the pulsating vibration air of positive pressure supplied from the air supply port (the air supply port 4a shown in FIG. 1). Therefore, if the pulsating vibration air of positive pressure supplied from the air supply port (air supply port 4a shown in FIG. 1) is kept constant, the pulsating air vibration wave from the elastic body membrane 3 always passes through the through hole 3a.
A certain amount of powder material can be discharged.

That is, if the pulsating vibration air of positive pressure is kept constant, the constant discharge hopper 1 can constantly and stably supply the powder material from the through-hole 3a of the elastic film 3 for a long time. , Can be discharged at a constant rate.

Further, as shown in FIGS. 7 (a) to 7 (d), in this fixed-quantity discharge type hopper 1, the through hole 3a of the elastic membrane 3 has the same shape as the cone of the hopper body 2. Therefore, the powder material stored in the hopper body 2 can be discharged from the through-hole 3a of the elastic membrane 3 to the end without waste.

Even if a solidified portion or a bridge portion may be formed in the powder material stored in the hopper body 2, such a solidified portion or a bridge portion is formed by the elastic film 3. Since the powder material is immediately collapsed by the vibration, no solidified portion or bridge portion occurs in the powder material stored in the hopper body 2.

That is, in the fixed discharge hopper 1, no solidified portion or bridge portion is formed in the powder material stored in the hopper main body 2, so that the conventional hopper (see the hopper 101 shown in FIG. 14). ) In the powder material stored in the hopper main body (see the hopper main body 102 shown in FIG. 14) by the consolidated part (the consolidated part Ps shown in FIG. 14) and the bridge part, the discharge port ( The outlet 102 shown in FIG.
A phenomenon such as a change in the amount of emission from a) does not occur.

In the fixed discharge hopper 1, as described above, the discharge amount of the powder material discharged from the through hole 3a of the elastic film 3 depends on the pulsating vibration air of positive pressure. Therefore, only by changing the conditions (amplitude, wavelength, waveform, frequency, etc.) of the positive pressure pulsating air vibration wave supplied from the air supply port (air supply port 4a shown in FIG. 1), There is also an advantage that the discharge amount of the powder material discharged from the hole 3a can be changed.

Further, since the quantitative discharge type hopper 1 is excellent in quantitativeness of the discharge amount of the powder material discharged from the through hole 3a of the elastic film 3, the elastic film of the quantitative discharge type hopper 1 is excellent. 3 is connected to the middle of a conduit (not shown), and from one end of the conduit (not shown), pulsation of constant-pressure air for pneumatic transportation or positive pressure. If an air vibration wave is supplied and the powder material is sprayed from the other end of the conduit (not shown), the powder material is always stably supplied from the other end of the conduit (not shown). A constant concentration of powder material can be sprayed.

That is, the tubular hopper main body 2 is connected to the middle of a conduit (not shown), and air for pneumatic transportation is supplied from one end of the conduit (not shown). ) Is stored in the hopper body 2 from the other end of the hopper body 2, and flows through a through-hole 3 a provided in the elastic membrane 3 (not shown).
If a device for spraying the powder material discharged into the inside together with air for pneumatic transportation is assembled, this device functions as a fixed amount spraying device.

As described above, the fixed discharge hopper 1
Is used as a fixed amount spraying device, while the fixed amount spraying device is used, the center of the elastic body film 3 is always curved downward from the initial state, or in the initial state from the downward curved state. The weight W of the powder material stored on the elastic film 3 so as to vibrate, and the pressure P in the hopper body 2
It is preferable that the sum of 2 and the energy applied to the elastic film 3 is maintained so as to be larger than the pressure Pt in the conduit (not shown) (W + P2> Pt).

FIG. 8 is a block diagram schematically showing an example of a fixed-quantity spraying device using the fixed-discharge type hopper 1. As shown in FIG.

The fixed-quantity spray device 11 includes the fixed-discharge type hopper 1, the air source 9, and the pulsating vibration air generator 5.

The air source 9 and the pulsating vibration air generator 5 are connected by a conduit T2. When the air source 9 is driven, the pulsating vibration air generator 5 is connected to the pulsating vibration air generator 5 via the conduit T2. Compressed air at a constant pressure is supplied.
Then, the air source 9 is driven, and the pulsating air vibration wave generator 5 is driven.
Is driven, the steady-pressure compressed air supplied to the pulsating air vibration wave generator 5 via the conduit T2 is converted into a positive-pressure pulsating air vibration wave, and supplied to the conduit T1. I have. One end of a conduit T1 is connected to the pulsating vibration air generator 5. The conduit T1 branches on the way and
These are the conduits (branch pipes) T1a and T1b.

In the middle of one conduit (branch tube) T1a,
An on-off valve V1 and a pressure regulating valve Vp1 are provided.
The F1 provided in the middle of the conduit (branch tube) T1a
The member device indicated by denotes a dust filter that removes dust contained in the positive pressure pulsating vibration air generated by driving the air source 9 and the pulsating vibration air generation device 5, which is provided as necessary. ing. In addition, a fixed amount discharge type hopper 1 is connected in the middle of the other conduit (branch tube) T1b.

More specifically, in the middle of the other conduit (branch tube) T1b, the through hole 3a provided in the elastic film 3 of the fixed quantity discharge type hopper 1 is connected. Further, in the middle of the other conduit (branch tube) T1b, an on-off valve V2 is provided on the side closer to the pulsating air vibration wave generating device 5 from a connection portion C between the conduit (branch tube) T1b and the constant-rate discharge type hopper 1.
And a pressure regulating valve Vp2. The member device indicated by F2 provided in the middle of the other conduit (branch tube) T1b was generated by driving the air source 9 and the pulsating air vibration wave generator 5 provided as necessary.
4 shows a dust filter that removes dust contained in a pulsating air vibration wave of positive pressure. Next, this quantitative spraying device 1
1 will be described.

When quantitatively spraying a powder material of a fixed concentration from the other end eT1b of the other conduit (branch tube) T1b of the metering spray device 11, first, the powder material is put into the hopper body 2. To accommodate.

Next, the material input port 2b of the hopper body 2
Then, the lid 4 is hermetically attached. Next, the on-off valves V1, V
2 is opened, and the opening / closing amounts of the pressure adjusting valves Vp1 and Vp2 are appropriately adjusted.

At this time, while the powder material of a constant concentration is quantitatively sprayed from the other end eT1b of the conduit (branch tube) T1b of the constant-quantity spraying device 11, the elastic film 3 moves as shown in FIG. )
7 (d) and the elastic body obtained by summing the weight W of the powder material stored on the elastic body membrane 3 and the pressure P2 in the hopper body 2 so as to vibrate in the opposite direction. Adjustment is made so that the energy applied to the membrane 3 becomes larger than the pressure Pt in the conduit (not shown) (W + P2> P
t). Next, the air source 9 is driven at a predetermined driving amount, and the pulsating air vibration wave generating device 5 is driven at a predetermined driving amount, so that a pulsating air vibration wave of a predetermined positive pressure is supplied into the conduit T1. The positive pressure pulsating air vibration wave supplied into the conduit T1 is adjusted to a predetermined pressure by the pressure regulating valve Vp1, and then, through the conduit (branch tube) T1a, from the air supply port 4a into the hopper body 2. Supplied to

The positive pressure pulsating vibration air supplied into the conduit T1 is supplied to the conduit (branch tube) T1b after being adjusted to a predetermined pressure by the pressure regulating valve Vp2.

The elastic film 3 is provided with a pulsating vibration air of positive pressure supplied into the hopper body 2 and a conduit (branch tube) T1b.
With the pulsating air vibration wave of positive pressure being supplied inside,
Perform steady oscillation.

The steady vibration is caused by the weight W of the powder material stored on the elastic film 3 and the pressure P in the hopper body 2.
2 is adjusted so that the energy applied to the elastic film 3 is larger than the pressure Pt in the conduit (not shown).
(A) to FIG. 7 (d) and the vibration reverse thereto.

Due to the steady vibration of the elastic film 3, a certain amount of powder material is discharged from the through holes 3a provided in the elastic film 3.

From the through holes 3a provided in the elastic film 3,
The powder material discharged into the conduit (branch tube) T1b is mixed with the positive pressure pulsating air vibration wave supplied into the conduit (branch tube) T1b, dispersed, and dispersed. It is pneumatically transported to the other end eT1b of T1b, and is sprayed with air from the other end eT1b.

In the constant-quantity spraying apparatus 11, since a positive-pressure pulsating air vibration wave is supplied into the conduit (branch tube) T1b, the steady-pressure air is supplied into the conduit (branch tube) T1b. Conduit (branch) T as seen in the case
Adhesion and deposition of the powder material in 1b and blow-through phenomenon do not occur.

As a result, the powder material is sprayed from the other end eT1b of the conduit (branch tube) T1b while maintaining the concentration at the time of being discharged from the through-hole 3a provided in the elastic film 3. This device 11 includes the other end e of a conduit (branch tube) T1b.
It is excellent in quantitativeness of the powder material sprayed from T1b. In addition, in this device 11, since each of the air source and the pulsating air vibration wave generating device is provided one by one, the device configuration can be simplified.

Not only the pulsating air vibration wave generator
In the case of a base, by adjusting the lengths of the conduit (branch tube) T1a and the conduit (branch tube) T1b, the positive pressure pulsating air vibration wave supplied into the hopper body 2 and the conduit (branch tube) T1a The phase of the positive pressure pulsating air vibration wave supplied to the connection portion C of the branch pipe (T1b) between the conduit (branch pipe) T1b and the constant-rate discharge type hopper 1 can be changed arbitrarily, whereby the elasticity The amplitude of the body membrane 3 can be changed arbitrarily.

For example, if the length of the conduit (branch tube) T1a and the length of the conduit (branch tube) T1b are adjusted, the positive pressure pulsating air vibration wave supplied into the hopper main body 2 may have an amplitude peak. , Conduit (branch tube) T1b, conduit (branch tube) T1b
The positive pressure pulsating air vibration wave supplied to the connection portion C between the hopper 1 and the fixed discharge hopper 1 can be made to have a peak of the amplitude. In this case, the amplitude of the elastic film 3 is reduced. Can be.

Also, for example, a conduit (branch tube) T1a,
If the length of the conduit (branch tube) T1b is adjusted, when the positive pressure pulsating air vibration wave supplied into the hopper main body 2 has a peak of amplitude, the conduit (branch tube) T1b of the conduit (branch tube) may be adjusted. ) T
The pulsating vibration air of positive pressure, which is supplied to the connection portion C between the hopper 1b and the constant-rate discharge hopper 1, can be made to have a valley of the amplitude. In this case, the amplitude of the elastic film 3 is increased. be able to.

As described above, in the fixed amount spraying apparatus 11,
By adjusting the length of the conduit (branch tube) T1a and the length of the conduit (branch tube) T1b, the powder discharged from the through-hole 3a of the elastic film 3 can be arbitrarily changed by changing the amplitude of the elastic film 3. By changing the discharge amount of the body material, the powder material can be stably sprayed from the other end eT1b of the conduit (branch tube) T1b quantitatively.

The other end eT1b of the conduit (branch tube) T1b
Can be changed by changing the size and shape of the through-hole 3a. Further, in the embodiment of the invention described above, the elastic film 3 is
Although the example in which the plurality of through-holes 3a are provided has been mainly described, the concentration of the powder material sprayed from the other end eT1b of the conduit (branch pipe) T1b is determined by the plurality of through-holes 3a,. Can also be changed by providing.

That is, instead of using the elastic film 3, an elastic film 3A shown in FIG. 9 having a plurality of through holes 3a.
Can change the concentration of the powder material sprayed from the other end eT1b.

The other end eT1b of the conduit (branch tube) T1b
Usually, nozzle heads of various shapes are connected depending on the type of powder material to be used and the type of an object to be sprayed with the powder material.

FIG. 10 is an exploded perspective view exemplarily showing a nozzle head suitable for uniformly applying a powder material over a relatively wide area.

The nozzle head 12 has a cap body 13 having a shape obtained by cutting a cylindrical body in approximately half along the axial direction.
And a tubular spray head 14 provided in the cap body 13. The spray head 14 has a slit-shaped opening 1.
4a is provided.

Further, a connection member 15 is connected to the spray head 14 on the side opposite to the side where the slit-shaped opening 14a is provided. The connection member 15 includes a connection pipe 15a.
And a conduit (branch pipe) T3a branched from the connection pipe 15a,
T3b, T3c, T3d, and T3e. The lengths of the conduits (branch pipes) T3a, T3b, T3c, T3d, and T3e are made equal.

Further, conduits (branch pipes) T3a, T3b, T
Each of 3c, T3d, and T3e is connected to the spray head 14 at substantially equal intervals.

The connection pipe 15a is connected to the other end eT1b of the conduit (branch pipe) T1b. In the nozzle head 12, an equal length conduit (branch pipe) is provided at a position of the spray head 14 provided with the slit-shaped opening 14a on a side opposite to the side provided with the slit-shaped opening 14a. T
3a, T3b, T3c, T3d, and T3e are connected at equal intervals.

As a result, the same load is applied to the powder material that has been pneumatically transported to the other end eT1b of the conduit (branch tube) T1b, and the conduit (branch tube) T3a, T3b, T3c, T
Since the pneumatic transport is performed in each of 3d and T3e, the same concentration of the powder material is supplied to each of the connection portions of the conduits (branch tubes) T3a, T3b, T3c, T3d, and T3e and the spray head 14.

Further, as described above, the conduit (branch tube) T
Spray head 3a, T3b, T3c, T3d, T3e
4 are connected at equal intervals.

As a result, the powder material having substantially the same concentration is supplied from one end to the other end of the spray head 14, and the powder material supplied to the spray head 14 is
After being dispersed in the hollow part of the inside, it is sprayed from the slit-shaped opening 14a, so that the slit-shaped opening 14a
The powder material is sprayed from one end to the other end at substantially the same concentration.

Further, since the spray head 14 is housed in the cap 13, the powder material does not scatter in directions other than the opening of the cap 13.

That is, the nozzle head 12 is relatively
It is suitable for applying the powder material uniformly over a wide range.

More specifically, the nozzle head 12
Is designed to store the release agent powder in the hopper body 2 and is suitable, for example, as a nozzle head for uniformly applying the release agent powder over a wide area such as a mold surface of a mold of an injection molding machine. ing. Next, the configuration of the pulsating air vibration wave generator 5 will be described in more detail.

FIG. 11 is a sectional view schematically showing the structure of the pulsating vibration air generator 5. The pulsating vibration air generator 5 includes an air supply port 52a and an air discharge port 5a.
2b, a valve seat 53 provided in the hollow chamber 52, a valve body 54 for opening and closing the valve seat 53,
A rotary cam 55 for opening and closing the valve body 54 with respect to the valve seat 53; The air supply port 52a has a conduit T2
Is connected to the air discharge port 52b.
The conduit T1 is connected. In FIG. 11, a portion indicated by 52c indicates a pressure adjustment port provided in the hollow chamber 52 as necessary, and a pressure adjustment valve 57 is provided in the pressure adjustment port 52c to conduct and shut off the air. It is provided to be.

In FIG. 11, a member device 58 provided in the middle of the conduit T2 is a flow control device (flow control valve) for adjusting the flow rate of the compressed air generated by driving the air source 9. The flow control device (flow control valve) 58 is provided as needed. The valve body 54 includes a shaft 54a, and a rotating roller 56 is rotatably provided at a lower end of the shaft 54a. Further, the main body 51 of the pulsating air vibration wave generating device 5 is provided with a shaft body accommodation hole h51 for accommodating the shaft body 54a of the valve body 54 in an airtight and vertically movable manner. The rotating cam 55 includes an inner rotating cam 55a and an outer rotating cam 55b.

Inner rotary cam 55a and outer rotary cam 55
In each of b, a predetermined concavo-convex pattern is formed so as to be separated by a distance substantially corresponding to the diameter of the rotating roller 56.

As the rotary cam 55, one having a concavo-convex pattern in which the powder material is easily mixed and dispersed according to the physical properties of the powder material is used. Inner rotating cam 55 of rotating cam 55
a between the outer rotating cam 55b and the outer rotating cam 55b.
Is rotatably fitted.

In FIG. 11, a member indicated by ax indicates a rotation shaft of a rotation drive means (not shown) such as a motor, and a rotation cam 55 is replaceably mounted on the rotation shaft ax. It is supposed to be.

Next, the pulsating air vibration wave generator 5
A method for supplying a positive pressure pulsating air vibration wave into the conduit T1 will be described. When supplying a positive pressure pulsating air vibration wave into the conduit T1, first, a rotation driving means (not shown).
A rotating cam 55 having a concavo-convex pattern in which the powder material is easily mixed and dispersed according to the physical properties of the powder material on the rotation axis ax.
Attach.

Next, by driving the air source 9, compressed air is supplied into the conduit T2. The compressed air supplied into the conduit 2 is adjusted to a predetermined flow rate by the flow control device (flow control valve) 58 when the flow control device (flow control valve) 58 is provided. Is supplied from the air supply port 52a into the hollow chamber 52. Also,
By driving the air source 9 and driving the rotation driving means (not shown), the rotation driving means (not shown) is driven.
The rotation cam 55 attached to the rotation shaft ax is rotated at a predetermined rotation speed.

As a result, the rotating roller 56 rotates between the inner rotating cam 55a and the outer rotating cam 55b of the rotating cam 55 driven to rotate at a predetermined rotation speed, and is provided on the rotating cam 55. The valve body 54 moves up and down with good reproducibility in accordance with the uneven pattern that is
The valve seat 53 is opened and closed according to the concave / convex pattern provided in.

Further, the pressure adjusting port 52 is provided in the hollow chamber 52.
When the pressure adjusting valve 57 is provided, the positive pressure pulsating air vibration wave supplied to the conduit T1 is adjusted by appropriately adjusting the pressure adjusting valve 57 provided in the pressure adjusting port 52c. Adjust pressure.

By the above operation, a positive pressure pulsating air vibration wave is supplied to the conduit T1.

The wavelength of the positive pressure pulsating air vibration wave supplied into the conduit T1 is appropriately adjusted by the concavo-convex pattern provided on the rotating cam 55 and / or the rotating speed of the rotating cam 55.

Further, the waveform of the positive pressure pulsating air vibration wave can be adjusted by the concave / convex pattern provided on the rotary cam 55, and the amplitude of the positive pressure pulsating air vibration wave can be adjusted by driving the air source 9. In the case where the flow rate is controlled or a flow control device (flow control valve) 58 is provided, the flow control device (flow control valve) 58 is adjusted, and a pressure control valve is connected to the pressure control port 52c. When the valve 57 is provided, the pressure can be adjusted by appropriately adjusting the pressure adjusting valve 57 provided in the pressure adjusting port 52c, or by adjusting them in combination.

The pulsating air vibration wave generator is not limited to the pulsating air vibration wave generator 5 shown in FIG. 11, and other pulsating air vibration wave generators can be used.

FIG. 12 is an explanatory view schematically showing another example of such a pulsating vibration air generator.

The pulsating air vibration wave generator 5A has the same structure as the pulsating air vibration wave generator 5 except for the following structure, and the corresponding members are denoted by the corresponding reference numerals. Therefore, the description is omitted. The pulsating air vibration wave generator 5A includes a cylindrical tubular body 72 and a tubular body 7.
A rotary valve 73 attached to the rotation shaft 72a is provided with the center axis of the cylindrical body 72 as the rotation shaft 72a so that the inside of the cylinder 2 is roughly divided into two. The rotation shaft 72a is configured to rotate at a predetermined rotation speed by rotation driving means (not shown) such as an electric motor. A conduit T2 and a conduit T1 are connected to the outer peripheral wall of the tubular body 72 at a predetermined distance.

When a pulsating air vibration wave having a desired positive pressure is supplied into the conduit T1 by using the pulsating air vibration wave generator 5A, the air source 9 is driven and a predetermined pressure is supplied into the conduit T2. Supply compressed air.

If a flow control device (flow control valve) 58 is provided in the middle of the conduit T2,
By appropriately adjusting the flow rate control device (flow rate control valve) 58, the flow rate of the compressed air supplied into the conduit T2 is adjusted.

Further, by rotating the rotating shaft 72a at a predetermined rotation speed by a rotation driving means (not shown) such as an electric motor, the rotary valve 73 attached to the rotation shaft 72a is rotated at a predetermined rotation speed. Rotate.

Then, for example, when the rotary valve 73 is at the position shown by the solid line, the conduit T2 and the conduit T1 are in a conductive state, and the compressed air generated from the air source 9 is It is supplied from T2 to conduit T1.

Further, for example, when the rotary valve 73 is at the position shown by the imaginary line, the conduit T2 and the conduit T1 are shut off by the rotary valve 73.

At this time, the rotary valve 73 in the cylindrical body 72 is
The compressed air is supplied from the conduit T2 to the one space Sa partitioned by the above, and the air is compressed in this space Sa.

On the other hand, in one space Sb in the cylindrical body 72 partitioned by the rotary valve 73, the compressed air stored in the space Sb is supplied into the conduit T1.

By repeating such an operation by rotating the rotary valve 73, a pulsating vibration air of positive pressure is sent into the conduit T1.

FIG. 13 is an exploded perspective view schematically illustrating another example of the pulsating vibration air generator. The pulsating air vibration wave generator 5B includes a cylindrical tubular body 82 and a rotary valve body 83 rotatably provided in the tubular body 82. The cylindrical body 82 has a structure in which one end 82e is open and the other end is closed by a lid 82c, and the side peripheral surface S82 is provided with an intake port 82a and a wave transmitting port 82b. .

A conduit T2 connected to the air source 9 is connected to the intake port 82a, and a conduit T1 connected to the fixed-quantity feeder device 51 is connected to the wave transmitting port 82b.

In FIG. 13, the portion indicated by reference numeral 82d indicates a rotary bearing hole for pivotally mounting the rotary valve element 83. The rotary valve element 83 has a cylindrical shape having a hollow h83, and an opening h84 is provided in the side peripheral surface S83.
Further, the rotary valve element 83 has a structure in which one end 83e is open and the other end is closed by a lid 83c.

[0147] The rotary valve body 83 has a rotary shaft 85 extending on the center axis of rotation. The rotary shaft 85 is connected to a rotary drive unit (not shown) such as an electric motor. When the rotary drive unit (not shown) is driven, the rotary valve 83 moves around the rotary shaft 85. To rotate. The outer diameter of the side peripheral surface S83 of the rotary valve body 83 substantially matches the inner diameter of the cylindrical body 82. When the rotary valve body 83 is housed in the cylindrical body 82 and the rotary valve body 83 is rotated. The side peripheral surface S83 of the rotary valve body 83 slides along the inner peripheral surface of the cylindrical body 82.

In FIG. 13, the portion indicated by 83d is a rotary bearing hole 82 provided in the lid 82c of the cylindrical body 82.
d shows a rotating shaft rotatably housed. The rotary valve element 83 is rotatably provided in the cylindrical body 82 with the rotary shaft 83d attached to the rotary bearing hole 82d.

When supplying a pulsating vibration air of a desired positive pressure into the conduit T1 by using the pulsating vibration air generator 5B, the air source 9 is driven to supply compressed air into the conduit T2. Supply.

In the case where a flow control device (flow control valve) (not shown) is provided in the middle of the conduit T2, the flow control device (flow control valve) (not shown) is provided.
Is adjusted as appropriate to adjust the flow rate of the compressed air supplied into the conduit T2.

Further, the rotary valve 85 is rotated at a predetermined rotation speed by rotating the rotation shaft 85 at a predetermined rotation speed by a rotation driving means (not shown) such as an electric motor.

Then, for example, the opening h of the rotary valve body 83
When the valve 84 is at the position of the transmission port 82b, the conduit T2 and the conduit T1 are brought into conduction, and at this time, compressed air is sent out to the conduit T1.

Also, for example, the side peripheral surface S8 of the rotary valve body 83
When 3 is at the position of the transmission port 82b, the space between the conduit T2 and the conduit T1 is cut off by the side peripheral surface S83, and no compressed air is sent to the conduit T1 at this time.

By repeating such an operation by rotating the rotary valve element 83, a pulsating vibration air of positive pressure is sent into the conduit T1. In the above-described embodiment, the example in which the air supply port 4a is provided in the lid 4 has been described.
May be provided above the side surface of.

As described in detail above, claim 1 is as follows.
In the quantitative discharge type hopper described in (1), when a positive pressure pulsating air vibration wave is supplied from the air supply port, the elastic film vibrates by the positive pressure pulsating air vibration wave.

Due to the vibration of the elastic film, the powder material stored in the hopper main body is discharged from the through holes provided in the elastic film.

The elastic film oscillates as long as the amplitude, wavelength, and frequency of the pulsating vibration air of positive pressure are constant.

That is, through the through holes provided in the elastic film,
The discharge amount of the powder material stored in the hopper main body depends on the pulsating vibration air of positive pressure. Therefore, if the pulsating vibration air of positive pressure supplied from the air supply port is kept constant, a constant amount of the powder material can always be discharged from the through-hole of the elastic film.

That is, if the constant-rate pulsating air oscillating wave is kept constant, the constant-rate discharge type hopper can constantly and stably supply a fixed amount of powder material from the through-hole of the elastic film for a long time. Can be discharged at the rate of

Further, in this fixed discharge hopper, the through-hole of the elastic membrane has the same shape as the cone of the hopper main body, so that the powder material stored in the hopper main body can be used to the end without waste. It can be discharged from the through holes of the elastic membrane.

Further, in the fixed-quantity discharge type hopper, no solidified portion or bridge portion occurs in the powder material stored in the hopper main body due to the vibration of the elastic film.

That is, in this fixed discharge hopper, since no solidified portion or bridge portion is formed in the powder material stored in the hopper main body, the powder stored in the hopper main body is different from the conventional hopper. No phenomenon such as a change in the discharge amount from the discharge port occurs in the material due to the consolidated portion or the bridge portion.

Further, in this fixed discharge hopper, since the discharge amount of the powder material discharged from the through hole of the elastic film depends on the pulsating vibration air of the positive pressure, it is supplied from the air supply port. , Positive pressure pulsating air oscillating wave conditions (amplitude, wavelength,
There is also an advantage that the discharge amount of the powder material discharged from the through-hole of the elastic film can be changed only by changing the waveform, the frequency, and the like.

Further, since the quantitative discharge type hopper is excellent in quantitativeness of the discharge amount of the powder material discharged from the through hole of the elastic film, the through hole of the elastic film of the quantitative discharge type hopper is excellent. The provided side is connected to the middle of the conduit, and from one end of the conduit, a constant pressure air for pneumatic transportation or a pulsating air vibration wave of positive pressure is supplied, and from the other end of the conduit, the powder material is supplied. Can be sprayed from the other end of the conduit constantly and stably at a constant concentration of powder material.

In the fixed quantity discharge type hopper according to the second aspect, since the elastic film is attached to the bottom surface of the hopper body by using the elastic film attachment which can easily and uniformly stretch the elastic film, It is possible to easily assemble a fixed discharge hopper excellent in fixed discharge property.

According to the third aspect of the present invention, the quantitative spraying apparatus is excellent in quantitativeness of the discharge amount of the powder material.
, The powder material having a certain concentration can be sprayed stably from the other end of the conduit.

According to the fourth aspect of the present invention, the powder material discharged into the conduit from the constant discharge hopper is pneumatically transported to the end of the conduit by using a positive pressure pulsating air vibration wave. The powder material adheres to the inside of the conduit, as was seen when supplying air at a constant pressure into the conduit.
No accumulation or blow-through occurs.

Thus, from the end of the conduit, the powder material is
Since the spraying is performed while maintaining the concentration at the time of being discharged from the through-hole provided in the elastic film, this quantitative spraying device is excellent in quantitativeness of the powder material sprayed from the other end of the conduit. .
In the quantitative spraying device according to the fifth aspect, since one pulsating air vibration wave generator is provided, the device configuration can be simplified.

In addition, in this quantitative spraying device, by driving the pulsating air vibration wave generator, the pulsating air vibration waves of the same phase and the positive pressure can be supplied to the two branch pipes.

Thus, by adjusting the length of the two branch pipes, the phase of the positive pressure pulsating air vibration wave supplied from the air supply port of the fixed discharge hopper and the phase of the other branch pipe can be adjusted.
The amplitude of the vibration of the elastic membrane can be increased or decreased by making the phase of the positive pressure pulsating air vibration wave the same or different at the connection between the other branch pipe and the fixed discharge hopper. Or you can.

In this quantitative spraying apparatus, the amplitude of the vibration of the elastic film is varied by adjusting the phase of the pulsating air vibration wave of the positive pressure, so that the concentration of the powder material sprayed from the end of the other branch pipe is increased. Can also be changed.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a fixed discharge hopper according to the present invention, and FIG. 1A is an external perspective view schematically showing a fixed discharge hopper according to the present invention. 1
FIG. 2B is a schematic cross-sectional view of the fixed discharge hopper shown in FIG.

FIG. 2 is a plan view schematically showing an example of an elastic film used in a fixed-quantity discharge hopper according to the present invention.

FIGS. 3 (a) and 3 (b) are explanatory diagrams exemplarily showing positive-pressure air pulsation waves used in the constant-rate discharge hopper according to the present invention.

FIG. 4 is a perspective view schematically showing a state in which an elastic film is attached to an elastic film attachment used in the fixed-quantity discharge hopper according to the present invention.

FIG. 5 is an exploded perspective view schematically showing a configuration of the elastic membrane attachment shown in FIG.

FIG. 6 is a cross-sectional view schematically showing the configuration of the elastic film attachment shown in FIG.

FIG. 7 is an explanatory view schematically showing the operation of the fixed-quantity discharge type hopper according to the present invention.

FIG. 8 is a configuration diagram schematically showing an example of a fixed-quantity spraying device using a fixed-quantity discharge hopper according to the present invention.

FIG. 9 is a plan view schematically showing another example of the elastic film used in the fixed-quantity discharge hopper according to the present invention.

FIG. 10 is an exploded perspective view exemplarily showing a nozzle head of the fixed amount spraying apparatus according to the present invention.

FIG. 11 is a cross-sectional view schematically showing a configuration of a pulsating air vibration wave generator suitable for a quantitative discharge type hopper according to the present invention and a quantitative spraying device according to the present invention.

FIG. 12 is a cross-sectional view schematically showing another configuration of a pulsating air vibration wave generator suitable for the quantitative discharge type hopper according to the present invention and the quantitative spraying device according to the present invention.

FIG. 13 is a cross-sectional view schematically showing another configuration of a pulsating air vibration wave generator suitable for the quantitative discharge type hopper according to the present invention and the quantitative spraying device according to the present invention.

FIG. 14 is a partially cutaway sectional view schematically showing a conventional hopper.

[Explanation of symbols]

 Reference Signs List 1 Quantitative discharge type hopper 2 Hopper main body 2a Discharge port 2b Material input port 3, 3A Elastic film 3a Through hole 4 Lid 4a Air supply port 5 Pulsating air vibration wave generator 6 Elastic film fixing device 9 Air source 62 Base 63 Push-up member 64 Holding member h1, h2, h3 Hollow Cv Projection Dv V-groove S1 Mounting surface

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kiyoshi Morimoto 1188 Shimotsukari, Nagaizumi-cho, Sunto-gun, Shizuoka Pref.

Claims (5)

[Claims] 1. A hopper main body having a cylindrical shape, an elastic film provided to form a bottom surface of the hopper main body and having a through hole, and a lid detachably provided at an upper opening of the hopper main body. A body, and an air supply port provided in the hopper body or the lid, and by supplying a positive pressure pulsating air vibration wave from the air supply port, vibrates the elastic body film, A quantitative discharge type hopper configured to discharge a powder material stored on the elastic film in the cylindrical hopper body from a through hole provided in the body film. 2. The elastic membrane is attached to a lower portion of the hopper body using an elastic membrane attachment, the elastic membrane attachment comprising: a pedestal having a hollow; and a surface of the pedestal. A push-up member having a hollow, and a pressing member having a hollow slightly larger than the outer periphery of the push-up member, and a surface of the pedestal having a hollow outer side formed in the pedestal. A V-groove provided so as to surround a hollow formed in the pedestal in a ring shape at a position outside the outer periphery of the pressing member, and a surface of the pressing member facing the pedestal is formed on the surface. , So as to fit into a V-groove provided on the surface of the pedestal, and
A ring-shaped, V-shaped projection is provided; the push-up member is placed on the surface of the pedestal; the elastic film is placed on the push-up member; By tightening the pressing member against the pedestal so as to cover the body membrane together, the elastic film is pushed up by the push-up member in the direction of the holding member, so that the elastic membrane is moved from the inner side to the outer side. In the stretched state, the outer peripheral portion of the elastic film stretched by the push-up member is sandwiched between the outer periphery of the push-up member and the surface of the holding member that forms the hollow, and provided on the surface of the pedestal. Between the V-groove provided and the V-shaped projection provided on the surface of the holding member facing the pedestal, so as to be further stretched and held, The fixed volume discharge hopper according to claim 1, wherein an upper surface of the member is attached to a lower portion of the cylindrical hopper body. 3. A fixed-quantity spray device using the fixed-quantity discharge hopper according to claim 1 or 2, further comprising a conduit, wherein a hopper body of the fixed-quantity discharge hopper is connected to the middle of the conduit. Supplying air for pneumatic transportation from one end of the conduit, stored in a hopper body of the fixed-rate discharge hopper,
The powder material discharged from the through hole provided in the elastic film of the fixed-quantity discharge hopper into the conduit, from the other end of the conduit, together with the air for pneumatic transportation, was sprayed. Metering spray device. 4. The quantitative spraying apparatus according to claim 3, wherein the air for pneumatic transportation is a pulsating vibration air of positive pressure. 5. A fixed amount spraying device using the fixed amount discharge type hopper according to claim 1 or 2, comprising a conduit and a pulsating air vibration wave generating device for generating a positive pressure pulsating vibration air wave. The conduit has one end connected to a pulsating air vibration wave generator, and branches on the way to form two branch pipes.
One branch pipe is connected to an air supply port provided in a hopper body or a lid of the fixed-quantity discharge hopper,
In the middle of the other branch pipe, a hopper body of the fixed-rate discharge hopper is connected, and by driving the pulsating air vibration wave generator,
From the end of one of the branch pipes, the powder material stored in the hopper body of the fixed-quantity discharge hopper and discharged into the conduit through a through hole provided in the elastic membrane of the fixed-quantity discharge hopper, A quantitative spraying device that is sprayed together with a positive pressure pulsating air vibration wave generated by driving a pulsating air vibration wave generating device.