JP2007000798A - Spraying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spraying device which can evenly and uniformly spraying a particulate fluid to an objective surface of an object. <P>SOLUTION: The spraying devices 5A and 5B spray the particulate fluid S to the objective surface 1a, 1b of the object 1 by a spraying means 21 for spraying the particulate fluid S together with a gas A. In the spraying devices, a guide flow channel 22 from the spraying means 21 to a spraying nozzle N for the object 1 is bent halfway at the right angles or nearly right angles. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a spraying device that sprays a granular fluid onto a target surface of an object by an injection unit that injects the granular fluid together with a gas.

  The conventional spraying device has a configuration in which the granular fluid and gas sprayed from the spraying means are sprayed from the spraying port to the target surface of the target object through a straight tubular guide channel extending from the spraying means to the spraying port for the target object. (For example, see Patent Document 1).

  The spray port is provided with a mesh body for relaxing the momentum of the flow of the granular fluid and gas ejected by the ejecting means. In this case, the reflection of the granular fluid was suppressed.

JP 2004-141004 A

  However, in the case of the conventional device, the granular fluid and gas are sprayed from the spray port in a rectified state, and therefore the granular fluid is not sufficiently diffused, and the granular fluid is evenly distributed over the target surface of the object. There was a problem that it was difficult to spray.

  In addition, in a structure in which a mesh body is provided at the spout to reduce the momentum of the powder fluid and gas flow, a certain amount of powder fluid is diffused when the powder fluid collides with the mesh body. Even so, it has been difficult to uniformly and uniformly disperse the granular fluid on the target surface of the target object.

  In view of this situation, the main problem of the present invention is to effectively solve the above-mentioned problems with a rational improvement.

[1] A first characteristic configuration of the present invention relates to a spray device for a granular fluid,
In the spraying device for spraying the granular fluid to the target surface of the object by the spraying means for spraying the granular fluid together with the gas,
The guide channel extending from the spraying means to the spray port for the object is bent at a right angle or almost a right angle in the middle portion thereof.

  In other words, with this configuration, the guide flow path extending from the spraying means to the spray port for the object is bent at a right or almost right angle in the middle thereof, so that the granular fluid and gas sprayed from the spraying means The flow direction of the liquid is changed in the flow direction at the bent portion, so that the granular fluid and gas that have flowed through the flow path portion upstream from the bent portion may be in the rectified state. Colliding with the flow path wall, it becomes a turbulent state due to the collision with the flow path wall, and flows through the flow path portion downstream from the bent portion toward the spray port. By spraying the fluid and gas in a state in which the fluid and gas are effectively diffused from the spraying port, it is possible to evenly spray the granular fluid on the target surface of the target object.

  Note that the granular fluid includes not only powdered solids and granular solids but also mist liquids (that is, finely divided liquids), granular solid-liquid mixtures, and the like.

[2] The second characteristic configuration of the present invention is a preferable configuration in the implementation of the first characteristic configuration.
The opening area of the spray port is configured to be larger than the cross-sectional area of the flow path portion downstream from the bent portion in the guide flow path,
The flow path center portion of the flow path portion on the downstream side of the bent portion in the guide flow path is located on the central axis of the spray port.

  In other words, with this configuration, the granular fluid and gas flowing in the above-described turbulent flow state in the flow path portion downstream from the bent portion in the guide flow path have an opening area larger than the cross-sectional area of the downstream flow path portion. Can reach the large spraying port and be released in pressure, so that the granular fluid can be sprayed in a state where it is effectively diffused radially from the center of the spraying port. It is possible to spread evenly and uniformly on the target surface of the object.

[3] The third characteristic configuration of the present invention is a preferable configuration in the implementation of the first or second characteristic configuration.
The guide channel is composed of a vertical channel having the spout at the lower part and a horizontal channel communicating with the upper part of the vertical channel.

  That is, in the configuration in which the guide channel is bent at a right angle or substantially at a right angle in the middle portion, the channel portion downstream from the bent portion is a horizontal channel, or a vertical channel with a spray port at the top. In the downstream flow path portion, there is a risk of generating a granular fluid leaving the air flow due to its own weight and remaining in the downstream flow path portion, and in particular, the injection amount of the granular fluid in the injection means Regardless of the control, if the device is controlled to a predetermined amount, there is a risk that the amount of powdered fluid sprayed from the spout will vary due to the generation of residual powdered fluid. There is.

  In this regard, in the case of the third feature configuration, the particulate fluid and gas that have passed through the lateral flow path that is the upstream flow path portion are turbulent due to collision with the flow path wall as described above. It flows into the vertical flow channel that is the flow channel portion downstream from the bent part, and flows in the turbulent state through the vertical flow channel toward the lower spray port. Therefore, even if a granular fluid is generated that comes into contact with the flow channel of the vertical flow channel and once leaves the airflow, the granular fluid is continuously promoted in the vertical flow channel by its own weight. Therefore, it will be in the state of getting into the airflow again and will reach the spraying port together with the gas, thereby effectively preventing the powdered fluid from remaining in the guide flow path, and the spraying performance as a spraying device can be improved. This can be further improved.

[4] A fourth characteristic configuration of the present invention relates to a spray device for a granular fluid,
In the spraying device for spraying the granular fluid to the target surface of the object by the spraying means for spraying the granular fluid together with the gas,
A disturbing means for disturbing the flow of the granular fluid and the gas flowing through the guide flow path is provided at an intermediate position of the guide flow path from the spraying means to the spray port for the object.

  In other words, with this configuration, the flow of the granular fluid and gas ejected from the ejecting means becomes a turbulent state by being disturbed by the disturbing means even if it is in a rectified state until then, and the disturbance means is arranged. The flow path portion downstream from the installation location flows toward the spray port, and by this turbulence, the powder fluid and gas are sprayed in a state of being effectively diffused from the spray port, thereby The granular fluid can be uniformly distributed on the target surface of the object.

  Note that the granular fluid includes not only powdered solids and granular solids but also mist liquids (that is, finely divided liquids), granular solid-liquid mixtures, and the like.

[5] The fifth characteristic configuration of the present invention is a preferable configuration in the implementation of the fourth characteristic configuration.
The disturbance means is a baffle plate that makes the flow of the granular fluid and the gas turbulent by colliding the granular fluid and the gas injected from the injection means.

  That is, with this configuration, the flow of the granular fluid and the gas is made simple, such as providing a baffle plate that collides the granular fluid and the gas ejected from the ejecting means in the middle of the guide channel. It can be effectively turbulent by collision with the baffle plate, and by turbulent flow, it is spread evenly over the target surface of the target object in a state where the granular fluid is effectively diffused from the spout. can do.

[6] The sixth feature configuration of the present invention is a preferred configuration in the implementation of the fifth feature configuration.
The guide channel is formed by being bent at a right angle or almost a right angle in the middle part thereof,
The baffle plate is provided at the center or substantially the center position of the bent portion in a posture orthogonal to the flow of the granular fluid and the gas in the flow channel portion upstream from the bent portion of the guide flow path. With
The non-blocking portion is provided on the side portion of the baffle plate when viewed in the flow direction of the granular fluid and gas in the upstream flow path portion.

  In other words, with this configuration, a part of the granular fluid and gas flowing in the upstream channel portion is turbulent by colliding with the baffle plate, and the other part is a side part of the baffle plate. By detouring to the back side of the baffle plate (that is, the side opposite to the collision surface) through the non-blocking part, the detoured thing collides with the flow path wall of the bent part, and the detoured parts As a result of the collision, the turbulent flow is generated, whereby the flow of the granular fluid and the gas passing through the bent portion becomes a turbulent state and flows through the downstream flow path portion toward the spray port.

  That is, by the complex turbulence as described above, it is possible to spread the granular fluid and gas in a state in which the granular fluid and gas are more effectively diffused from the spraying port. Can be more uniformly and evenly distributed.

[7] The seventh characteristic configuration of the present invention is a preferable configuration in the implementation of any one of the fourth to sixth characteristic configurations. The characteristic is that the opening area of the spray port is the guide flow. It is configured to be larger than the cross-sectional area of the road,
The center of the guide channel is located on the center axis of the spray port.

  In other words, with this configuration, the granular fluid and gas flowing in the above-described turbulent flow state in the flow path portion downstream from the bent portion in the guide flow path have an opening area larger than the cross-sectional area of the downstream flow path portion. Can reach the large spraying port and be released in pressure, so that the granular fluid can be sprayed in a state where it is effectively diffused radially from the center of the spraying port. It is possible to spread evenly and uniformly on the target surface of the object.

Embodiment
FIGS. 1-6 shows embodiment of the spreading | diffusion apparatus 5A, 5B of this invention which spread | distributes the salt S which is a granular fluid uniformly over the object surface 1a, 1b of the rice ball 1 which is a target object uniformly, The target surface 1a of the rice ball rice 1 on the conveyance path in the rice ball manufacturing / packaging process in which the rice ball rice 1 produced in a triangular shape in the rice ball rice production apparatus 2 is conveyed to the packaging apparatus 10 in a state of being placed on the conveyor 3. , 1b are provided with two spraying devices 5A, 5B for sprinkling a predetermined amount of salt S on both surfaces.

  The rice ball manufacturing / packaging process from the rice ball manufacturing apparatus 2 to the packaging apparatus 10 consists of the rice ball manufacturing apparatus 2 and two spraying devices (first spraying device 5A and second spraying device 5B) provided at two locations on the transport path. ) In addition to the packaging device 10, the conveyor 3 that transports the rice balls 1, the centering device 4 that positions the rice balls 1 that are being transported in the center in the width direction of the conveyor 3, and the upstream of the transport path The reversing device 6 that reverses the rice ball 1 that has passed through the first spraying device 5A before the second spraying device 5B on the downstream side, and the supply device that supplies the laver bag 12 in which the laver 11 is accommodated in the conveying path of the rice ball 1 7. Partially heat-sealing the upper conveyor 8 that touches the seaweed bag 12 so as to wrap the rice ball 1 and the inner side surface of the seaweed bag 12 (contacting surface of the rice ball 1), 12 is composed of a point heater 9 to state wrapped your rice ball 1.

  Onigiri rice 1 conveyed on the conveyor 3 toward the centering device 4 is laid and conveyed so that one apex 1c of the triangle faces the conveying direction in the laid state. The conveyor width of the centering device 4 The two arms 4a that open and close in the direction are positioned in the center of the conveyor width direction, and the conveying posture of the rice ball 1 on the conveyor 3 is made constant.

  The first spraying device 5A and the second spraying device 5B are provided so as to sprinkle a predetermined amount of salt S from above on both sides of the target surfaces 1a and 1b of the rice ball 1 on the transport conveyor 3, and the first spraying device 5A and the second spraying device 5B A reversing device 6 provided between the first spraying device 5A and the second spraying device 5B passes through the first spraying device 5A located on the upstream side of the transport path, and the salt is applied to the one side target surface 1a of the rice ball 1 After sprinkling S, the rice ball 1 is sandwiched by the sandwiching arm 6a, the sandwiching arm 6a is reversed with the conveyor width direction as the rotation axis X, and one of the rice balls 1 sprinkled with the salt S by the first spraying device 5A. The rice balls 1 are transported in a state of being repeated so that the side target surface 1a comes to the lower side, and a predetermined amount of salt S is applied to the other side target surface 1b by the second spraying device 5B located on the downstream side of the transport path. Sprinkled.

  Rice balls 1 with a predetermined amount of salt S sprinkled on both the target surfaces 1a and 1b are transported starting from the bottom side surface 1d of the triangle in the transport direction and fed to the transport path by the supply device 7. It touches the nori bag 12 which accommodates.

  The supply device 7 is configured such that the nori bag 12 containing the nori 11 in a completely sealed state is sucked and held by the sucking and holding unit 7a, so that the conveyor width direction is the left-right direction of the nori bag 12 (that is, the opening direction). After the bottom side surface 1d of the rice ball 1 being fed to the transport path is in contact with the laver bag 12, the suction holding by the suction holding portion 7a is released by being pulled by the upper conveyor 8, and suction holding The part 7a sucks and holds the next laver bag 12 and supplies it to the transport path.

  The upper conveyor 8 sandwiches the seaweed bag 12 and the rice ball 1 that is in contact with the bottom side surface 1d between the upper conveyor 8 and the conveyor 3 as a conveying means, so that the seaweed bag 12 is in contact with the rice ball 1 as a whole. Win.

  The downstream end of the nori bag 12 in contact with the rice ball 1 on the upper and lower sides is partially heated by the point heater 9 so that the inner sides of the nori bag 12 are heat-sealed. Then, the rice ball 1 is wrapped in a laver bag 12 containing the laver 11, and the rice ball 1 and the laver bag 12 are conveyed together with air to the packaging device 10 that is sealed in the outer bag 13 in a completely sealed state.

  The packaging device 10 accommodates the rice ball 1 and the seaweed bag 12 wrapped with the rice ball 1 in the outer bag 13, and heat-seals the outer bag 13 with air in the outer bag 13. After complete sealing, a part of the outer bag 13 is sandwiched and heated to compress the air in the outer bag 13 and increase the air pressure in the outer bag 13.

  The first and second spraying devices 5A and 5B that sprinkle salt S onto the target surfaces 1a and 1b of the rice ball 1 respectively spray the salt S together with the pressurized air A, and the salt S from the spraying means 21. The guide passage 22 extends to the sprinkling port N with respect to the target surfaces 1a and 1b of the rice balls 1 to which the rice balls 1 are spread, and the guide passage 22 is a bent portion continuous from the injection flow passage tube 23 of the injection means 21. A flow channel portion on the upstream side of the channel portion 24 having a diameter of about 2 cm, and a flow passage portion on the downstream side of the bent portion that has the spout N in the lower portion and communicates with the horizontal flow passage tube 24 in the upper portion. It is composed of a longitudinal channel tube 25 having a diameter of about 5 cm.

  At the center position of the upper end portion 25a of the longitudinal channel pipe 25 where the guide channel 22 is bent, it opposes the communication hole 26 with the lateral channel pipe 24, and the salt S and the additive in the lateral channel pipe 24 are located. A baffle plate that collides the salt S injected from the injection means 21 and the pressurized air A in a posture orthogonal to the flow of the compressed air A to make the flow of the salt S and the pressurized air A turbulent. 27 extends in a suspended state from the upper end portion 25a of the longitudinal channel 25 so that the lower end portion 27a of the baffle plate 27 is at the same height as the lower edge portion 26a of the communication hole 26. Is set to

  And the non-blocking part 27c is provided in the both sides of the baffle plate 27 in the flow direction view of the salt S and the pressurized air A in the horizontal channel pipe 24.

  The injection means 21 includes a pressurized air injection device 28 that injects pressurized air A, a container 29 that contains salt S, and a lateral flow channel pipe 24 of the guide flow channel 22 directly from the pressurized air injection device 28. An injection flow channel pipe 23 that communicates in a tubular manner, a salt supply pipe 30 that communicates with a middle portion of the injection flow channel tube 23 and supplies the salt S in the container 29 to the injection flow channel tube 23, and a middle portion of the salt supply pipe 30 The vacuum release device 31 provided so as to be connected to the pressure release device 31, the pressurized air injection device 28, and the control device 32 that controls the operation of the vacuum release device 31. By injecting A, the inside of the injection flow path pipe 23 is exhausted and decompressed (that is, in a vacuum state), whereby the inside of the container 29 is passed through the salt supply pipe 30 communicating with the middle part of the injection flow path pipe 23. A predetermined amount of the salt S is sucked and supplied to the jet passage pipe 23. Has a configuration which is injected from the injection channel tube 23 with pressurized air A sideways flow pipe 24 of the guide channel 22 (configuration using the ejector effect).

  The vacuum release device 31 provided so as to be connected to the middle portion of the salt supply pipe 30 is configured to release the vacuum state due to the ejector effect by sending pressurized air A for releasing the vacuum state to the salt supply pipe 30. The vacuum release device 31 is operated simultaneously with the stop of the injection of the pressurized air A by the pressurized air injection device 28 by the control device 32, and the pressurized air A is sent from the salt supply pipe 30 to the injection flow channel tube 23. While the salt S in the salt supply pipe 30 on the downstream side of 31 is discharged to the guide flow path 22, the vacuum state in the injection flow path pipe 23, which is in a reduced pressure (vacuum) state due to the ejector effect, is released, and at the same time the vacuum The salt S remaining in the salt supply pipe 30 upstream of the release device 31 is returned to the container 29.

  By adjusting the injection time of the pressurized air A by the pressurized air injection device 28, the vacuum time (that is, the suction time of the salt S) in the injection flow channel pipe 23 can be adjusted. The supply amount (dispersion amount) can be adjusted.

  It should be noted that the amount of salt S sprayed by the spraying means 21 and sprayed on the target surfaces 1a and 1b of the rice ball 1 from the spray port N is adjusted to 1 g for each surface.

  Further, separately from the injection means 21, the pressurized air A for agitation is injected into the container 29, whereby the salt S in the container 29 is agitated and dried to prevent the salt S from solidifying and supply the salt smoothly. A stirrer / dryer 33 is provided for suction from the tube 30.

  The salt S and the pressurized air A injected from the injection means 21 are communicated with the injection flow path pipe 23 of the injection means 21 in a straight-flow state in a straight state from a horizontal flow path pipe 24 through a communication hole 26 to a vertical flow path pipe 25. And part of the salt S and the pressurized air A collide with the collision surface 27b of the baffle plate 27 provided at the upper end portion 25a of the longitudinal channel tube 25 to be turbulent. The baffle plate 27 detours to the back side of the baffle plate 27 (that is, the side opposite to the collision surface 27b) through the non-blocking portions 27c on both sides of the baffle plate 27, and further, the detoured salt S and the airflow A flow vertically. It collides with the flow path wall of the pipe 25, or the detoured salt S and the airflow A collide with each other, resulting in a turbulent state, and the vertical flow path pipe 25 is formed in the vertical flow path pipe 25. It flows toward the lower spraying port N and is sprayed from the spraying port N to the target surfaces 1a and 1b of the rice ball 1 It is.

  The lower part of the vertical channel pipe 25 provided with the spraying port N has a triangular shape in which the inner peripheral surface 34a is substantially in contact with the entire peripheral surface of the rice ball 1, and the central axis P of the spraying port N is vertical. It is formed in a triangular cylindrical cover 34 that is extended so as to be positioned coaxially with the central portion Q of the direction flow channel pipe 25, and is formed at a height that is approximately twice the thickness of the rice ball 1.

  The triangular cylindrical cover 34 is formed so as to be movable in the vertical direction so as to cover the rice ball 1 that has been conveyed to the position below the spout N on the conveyor 3. Is positioned just below the spout N and descends when the salt S and pressurized air A are sprayed from the spraying means 21 and covers the rice ball 1, which is covered with the triangular cylindrical cover 34. Salt S is sprayed in the state.

  That is, the flow of the salt S and the pressurized air A in the longitudinal channel pipe 25 having a diameter of about 5 cm flows in a turbulent state while maintaining a high fluid pressure, and is almost the same size as the rice ball 1. Since it can be diffused in the triangular cylindrical cover 34, a predetermined amount of salt S is uniformly and evenly distributed over the target surfaces 1 a and 1 b of the rice ball 1 covered with the triangular cylindrical cover 34. can do.

[Another embodiment]
Next, another embodiment will be listed.

  In the above-described embodiment, the guide flow path 22 is composed of the horizontal flow path pipe 24 as the flow path portion on the upstream side of the bent portion and the vertical flow path pipe 25 as the flow path portion on the downstream side. The guide channel 22 may be bent at a right or almost right angle in the middle thereof, the upstream channel portion being a vertical channel and the downstream channel portion being a horizontal channel, In addition, various configurations such as a configuration in which both downstream flow channel portions are lateral flow channels (that is, a configuration including a horizontal flow channel portion and a depth flow channel portion) can be employed. .

  In the above-described embodiment, the disturbing means for disturbing the flow of the granular fluid and the gas was the baffle plate 27 provided at the bent portion of the guide flow path 22, but the disturbing means is not limited to this configuration. Various configurations such as a rotating body that disturbs the flow of the granular fluid and the gas can be adopted.

  In the above-described embodiment, the baffle plate 27 as the disturbing means is provided at the bent portion which is a communication portion between the horizontal channel pipe 24 and the vertical channel pipe 25. It is not limited to the position, and can be arranged at various positions.

  Further, as long as the disturbance means is provided in the middle of the guide flow path 22, the guide flow path 22 may be configured in a straight line from the injection means 21 to the spray port N.

  In the above-described embodiment, the salt S is sprayed as the powder fluid sprayed by the spraying devices 5A and 5B. However, the powder fluid is not limited to the salt S, and powder such as wheat flour or granulated sugar. Can be used to spray various granular fluids such as fine particles such as mist or fine liquid such as mist.

  Moreover, the gas injected by the injection means 21 is not limited to the pressurized air A, and various gases such as nitrogen and carbon dioxide can be injected according to the application.

The figure which shows the onigiri manufacture and packaging process which is embodiment of the dispersion | spreading apparatus of this invention. Diagram showing the spraying device in the rice ball manufacturing and packaging process The figure which shows the state which is spraying the granular fluid in a dispersion device The figure which shows the state which is spraying the granular fluid in a dispersion device The figure which shows the state which is stirring the granular fluid in a dispersion device Enlarged sectional view of the bent part of the guide channel of the spraying device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Target object 1a Target surface 1b Target surface 5A Spreading device 5B Spraying device 21 Injection means 22 Guide flow path 24 Upstream flow path part (lateral flow path)
25 Downstream channel part (vertical channel)
25a Bending point 27 Disturbing means (baffle plate)
27c Non-blocking part A Gas N Sprinkling port P Center axis Q of spraying port Center part S of flow path Granule fluid

Claims (7)

A spraying device for spraying the granular fluid to the target surface of the object by an injection means for injecting the granular fluid together with the gas,
A spraying device in which a guide channel extending from the spraying means to the spraying port for the object is bent at a right angle or almost a right angle at a midway portion thereof. The opening area of the spray port is configured to be larger than the cross-sectional area of the flow path portion downstream from the bent portion in the guide flow path,
The spraying device according to claim 1, wherein a flow path center portion of a flow path portion on a downstream side of a bent portion in the guide flow path is positioned on a central axis of the spray port.   The spraying device according to claim 1 or 2, wherein the guide channel is composed of a vertical channel having the spray port at a lower portion and a horizontal channel communicating with an upper portion of the vertical channel. A spraying device for spraying the granular fluid to the target surface of the object by an injection means for injecting the granular fluid together with the gas,
A spraying device provided with a disturbing means for disturbing the flow of the granular fluid and the gas flowing through the guide channel at a midpoint of the guide channel extending from the spraying unit to the spray port for the object.   The spraying device according to claim 4, wherein the disturbing unit is a baffle plate that makes the flow of the granular fluid and the gas turbulent by colliding the granular fluid and the gas injected from the injection unit. The guide channel is formed by being bent at a right angle or almost a right angle in the middle part thereof,
The baffle plate is provided at the center or substantially the center position of the bent portion in a posture orthogonal to the flow of the granular fluid and the gas in the flow channel portion upstream from the bent portion of the guide flow path. With
The spraying device according to claim 5, wherein a non-blocking portion is provided on a side portion of the baffle plate in a flow direction of the granular fluid and gas in the upstream flow path portion. The opening area of the spray port is configured to be larger than the cross-sectional area of the guide channel,
The spraying device according to any one of claims 4 to 6, wherein a flow path center portion of the guide flow path is positioned on a central axis of the spraying port.

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