JP2014207876A - Sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprayer which realizes compact size and light weight while increasing a spray range by spraying various liquids and chemical solutions such as agricultural chemicals in atomized and homogenized states.SOLUTION: A sprayer comprises: a casing; a blower provided at one end inside the casing; a blow head fixed to the other end of the casing and having through holes smaller than the inner shape of the casing formed in the spray direction; a nozzle fixed to the blow head and arranged such that the blowout direction forms a prescribed angle to an air flow from the blower in the through holes; and a tank connected to the nozzle via a liquid delivery tube and receiving a liquid.

Description

  The present invention relates to a sprayer for spraying chemical solutions such as agricultural chemicals and various liquids.

  2. Description of the Related Art Conventionally, a sprayer that is small and lightweight and includes a blower used as a vacuum cleaner or the like is known. For example, a tank for storing a liquid formed in a perpendicular direction in the middle of a casing connected to the blower is detachably attached, and the other end of the liquid feed pipe with one end facing the spray hole in the casing is connected to the tank. The one inserted in the above is known (see Patent Documents 1 and 2).

No. 6-12839 JP 10-328277 A

  However, in the structures of Patent Documents 1 and 2, since the spray hole of the liquid feed pipe is arranged and sprayed in the same direction as the airflow from the blower, the particle diameter of the spray liquid is not uniform and the scattering distance is limited. There is a risk of being. Furthermore, when spraying chemicals such as agricultural chemicals on plants and the like, the particle size greatly affects absorption into plants and the like, and thus it is desired to make the particles uniform.

  Accordingly, the present invention solves such problems, and improves the spray distance by spraying chemicals such as agricultural chemicals and various liquids in the form of fine particles in a uniform state, and is compact and lightweight. It is an object of the present invention to provide a sprayer that realizes the conversion.

  In order to solve the above problems, a sprayer according to claim 1 of the present invention is fixed to a casing, a blower provided at one end of the casing, and the other end of the casing. A nozzle body in which a small through-hole is formed toward the spraying direction, and a nozzle that is fixed to the nozzle body and is arranged such that the ejection direction has a predetermined angle with respect to the airflow from the blower in the through-hole. And a tank which is connected to the nozzle via a liquid feed pipe and which stores a liquid.

  The sprayer according to a second aspect of the present invention is the sprayer according to the first aspect, wherein the liquid is sprayed on the inner wall surface of the through hole in the nozzle body after the nozzle is ejected from the ejection hole. It is arranged at a position where it does not collide.

  The sprayer according to a third aspect of the present invention is the sprayer according to the first or second aspect, wherein the nozzle is configured such that the ejection direction of the liquid ejected from the ejection hole is in the through-hole. It is arranged so as to be orthogonal to the airflow.

  The sprayer according to claim 4 of the present invention is the sprayer according to any one of claims 1 to 3, wherein the nozzle has an ejection end surface having an ejection hole against an air flow from the blower. It is formed with an inclined surface so as to face.

  The sprayer according to claim 5 of the present invention is the sprayer according to any one of claims 1 to 3, wherein the nozzle has an ejection end surface having ejection holes against the airflow from the blower. It is formed to be horizontal.

  The sprayer according to claim 6 of the present invention is the sprayer according to any one of claims 1 to 3, wherein the nozzle has an ejection end surface having ejection holes against the airflow from the blower. And having a horizontal surface so that the tip of the inclined surface is horizontal to the airflow.

  Moreover, the atomizer according to claim 7 of the present invention is the atomizer according to any one of claims 1 to 6, wherein a groove inclined with respect to the axial direction is formed in the inner peripheral surface of the through hole. A shaped part is formed.

  Moreover, the sprayer according to claim 8 of the present invention is the sprayer according to any one of claims 1 to 7, wherein the nozzle has a plurality of branch portions that branch the ejection direction. The through hole is formed so as to correspond to the branch portion.

  The sprayer according to a ninth aspect of the present invention is the sprayer according to any one of the first to eighth aspects, wherein the casing is supplied with an air flow from the blower into the tank. A pressure tube is provided.

  The sprayer according to claim 10 of the present invention is the sprayer according to any one of claims 1 to 9, wherein the ejection end face is located substantially at the center of the through hole.

  In the nebulizer of the present invention, chemical solutions such as agricultural chemicals and various liquids can be sprayed in a fine and uniform state, so that the spray distance can be improved. Moreover, since the air blower that generates a high-speed air flow is adopted, the structure of the sprayer can be made compact and light.

It is a partial cross section front view of the sprayer in the Example of this invention. It is a partially-omission right side view which expanded the nozzle body vicinity of the sprayer in the Example of this invention. It is an AA expanded sectional view of FIG. 2 of the sprayer in the Example of this invention. It is a partially expanded sectional view of another specification of the sprayer in the Example of this invention. It is a partially expanded sectional view of another specification which inclined the nozzle of the sprayer in the Example of this invention. It is a partially expanded sectional view of another specification which makes the ejection end surface of the nozzle of the sprayer in the Example of this invention an inclined surface. It is a partially expanded sectional view of another specification which comprises the ejection end surface of the nozzle of the sprayer in the Example of this invention from an inclined surface and a horizontal surface.

  Hereinafter, a sprayer according to an embodiment of the present invention will be described with reference to the drawings. In the sprayer, the side on which the spray liquid is sprayed is the front, and the other is the back.

  As shown in FIGS. 1 to 3, the sprayer 1 according to the embodiment of the present invention mainly includes a base 2, a casing 3 installed on the base 2, and a blower 4 installed in the casing 3. A nozzle body 5 installed at one end of the casing 3, a nozzle 6 fixed to the nozzle body 5, and a liquid feed pipe 8 connecting the nozzle 6 and the tank 10 are configured.

  The sprayer 1 has a casing 3 installed at one end of a substantially rectangular base 2 and a tank 10 described later installed at the other end. In addition, a grip portion 2 a for carrying the sprayer 1 is provided at a substantially central portion of the base 2.

  The casing 3 is open at both ends and is formed in a substantially cylindrical shape. In the present embodiment, for example, in order to cause a pressure change in the airflow due to a throttling effect, the casing 3 has an opening at one end with a large diameter and the other end near a substantially central portion in the longitudinal direction so as to have a small diameter. To provide an inclined portion. The casing 3 is installed such that the small diameter is located in the outer direction of the base 2.

A blower 4 is installed inside the casing 3 on the large diameter side at one end, and a nozzle body 5 is installed inside the small diameter side at the other end. In order for the blower 4 to generate a high-speed air flow, for example, it is desirable that the rotation speed of the motor used is about 20000 to 30000 rotations per minute, and the air volume thereby is about 2 m ³ per minute.

  The nozzle body 5 is fixed so as to cover the opening at the other end of the casing 3 and fixes the nozzle 6 at a predetermined position. As shown in FIGS. 2 and 3, in the present embodiment, the nozzle body 5 is fixed to the casing 3 via a cap 7 in order to improve the sealing performance. Specifically, the outer periphery of the front end portion of the casing 3 is a male screw portion, the inner periphery of the cap 7 is a female screw portion, and the two are screwed together in a state where the nozzle body 5 is in contact with the opening of the casing 3. To fix. The fixing of the nozzle body 5 is not limited to this. For example, fixing means such as screws may be provided on the casing 3 and the nozzle body 5 so that the nozzle body 5 may be fixed to the casing 3.

  The nozzle body 5 is formed with a recess 5a into which the nozzle 6 is inserted and a through hole 5b into which the airflow from the blower 4 flows. The concave portion 5a is formed in a shape in which at least the nozzle 6 can be inserted. In the present embodiment, for example, the concave portion 5a is formed in substantially the same shape as the nozzle 6 in which the branch portions 6a are provided radially in three directions at equal intervals.

  Moreover, the through-hole 5b is formed toward the spray direction so as to communicate with the recess 5a. Specifically, the inner shape of the casing 3 is formed at a position where the nozzle 6 inserted in the nozzle body 5 faces the ejection hole 6b of the branching portion 6a and causes a pressure change in the airflow due to the throttling effect. It is formed in a smaller size. In the present embodiment, the through hole 5b has a diameter of about 8 to 8.5 mm and is formed so as to be parallel to the installation surface of the sprayer 1, but is not limited thereto. Of course, the shape of the through-hole 5b can be changed as appropriate so as to cause a pressure change in the airflow due to the throttling effect.

  The nozzle 6 is connected to the tank 10 via the liquid feed pipe 8 and ejects chemicals such as agricultural chemicals and various liquids accommodated in the tank 10. The nozzle 6 includes the plurality of branch portions 6 a that branch the ejection direction, and is fixed with the ejection hole 6 b facing the through hole 5 b of the nozzle body 5. The branch portion 6a is formed in a substantially cylindrical shape. In the present embodiment, the ejection hole 6b has a diameter of about 1 mm, and the ejection end surface 6c in which the ejection hole 6b is formed has a diameter of about 1.5 to 2 mm.

  More specifically, the position where the liquid ejected from the ejection hole 6b of the nozzle 6 by the airflow from the blower 4, that is, the sprayed liquid atomized by the high-speed airflow does not collide with the inner wall surface of the through hole 5b in the nozzle body 5 It is fixed with. For example, as shown in FIG.2 and FIG.3, it fixes so that the ejection hole 6b may be located in the approximate center position of the inner shape in the through-hole 5b of the front side.

  Further, the present invention is not limited to this, and as shown in FIG. 4, the branch portion 6 a is arranged so as to be flush with the front side of the nozzle body 5 and is fixed so as to be close to the inner wall surface of the through hole 6 b. You can also Thereby, the spray liquid ejected from the ejection hole 6b does not collide with the inner wall surface of the through hole 5b, and the particle diameter can be made uniform.

  Furthermore, the nozzle 6 is fixed so as to have a predetermined angle with respect to the airflow from the blower 4. Specifically, the ejection direction of the ejection holes 6 b in the nozzle 6 has a predetermined angle with respect to the airflow from the blower 4. The ejection end surface 6c in which the ejection holes 6b are formed is a smooth surface with respect to the flow direction of the liquid, that is, the direction of the airflow so that the liquid flowing along the ejection end surface 6c does not become a turbulent flow.

  In this embodiment, as shown in FIG. 3, the branching portion 6a of the nozzle 6 is orthogonal to the through-hole 5b. However, the present invention is not limited to this, and as shown in FIG. In the state where the branching portion 6a is inclined with respect to the through hole 5b of the nozzle body 5, it may be inclined about 10 degrees with respect to the front-rear direction. In such a case, the ejection end face 6 c of the nozzle 6 is provided so as to be horizontal to the airflow from the blower 4. That is, the jet direction of the liquid in the tank 10 jetted from the jet hole 6b of the nozzle 6 is orthogonal or inclined with respect to the airflow in the through hole 5b.

  Thus, by making the ejection end face 6c horizontal with respect to the airflow, the liquid ejected from the ejection hole 6b can be thinly stretched along the ejection end face 6c by the high-speed airflow to form a thin film flow. .

  In the present embodiment, the nozzle 6 configured as described above has a connecting member 9 provided at one end portion of the liquid feeding pipe 8 with respect to the nozzle 6 fitted in the recess 5a of the nozzle body 5. It is fixed to the nozzle body 5 by connecting from the opposite end surfaces. Specifically, the outer periphery of the tip of the connecting member 9 is a male screw part, and the inner periphery of the nozzle 6 is a female screw part, and they are fixed by screwing them together. The fixing of the nozzle 6 is not limited to this. As a result, the nozzle 6 is fixed in a state of being inserted into the recess 6 a of the nozzle body 5.

  The liquid feed pipe 8 connects the nozzle 6 and the tank 10. One end of the liquid feed tube 8 is connected to the nozzle 6, and the other end is immersed in the bottom of the liquid stored in the tank 10.

  The tank 10 can store, for example, 2 liters of liquid, and a cock 11 for adjusting the amount of liquid supplied is provided in the middle of the liquid feeding tube 9. Further, the casing 3 is provided with a pressurizing pipe 12 for sending the airflow from the blower 4 into the tank 10 and pressurizing the inside of the tank 10.

  The sprayer 1 configured as described above sucks the liquid in the tank 10 when the air flow from the blower 4 is discharged from the through hole 5b of the nozzle body 5, and ejects the nozzle 6 through the liquid feed pipe 8. The liquid is ejected from the hole 6b, and the spray liquid is dispersed by a high-speed air stream.

  At this time, since the ejection end face 6c of the nozzle 6 is fixed so as to be horizontal to the airflow from the blower 4, the ejected liquid is thinly stretched by the high-speed airflow along the ejection end face 6c to become a thin film flow. . Then, when the thin film flow is accelerated by the high-speed air flow and leaves the tip located on the front side of the ejection end face 6c, the film state cannot be maintained and is broken into fine particles due to the surface tension. Erupted.

  Moreover, since the ejection hole 6b of the nozzle 6 is fixed at a position where the ejected liquid, that is, the spray liquid does not collide with the inner wall surface of the through hole 5b in the nozzle body 5, the spray liquid sprayed in the form of fine particles. It is possible to spray far away with a uniform particle size.

  As described above, according to the nebulizer 1 of the present invention described above, chemical solutions such as agricultural chemicals and various liquids can be sprayed in the form of fine particles and in a uniform state, so that the spray distance can be improved. In addition, since the blower 4 that generates a high-speed airflow is employed, 200 to 500 cc of spray liquid per minute can be sprayed, and the structure of the sprayer 1 can be made compact and lightweight.

  Moreover, in the said Example, although the ejection end surface 6c horizontal to an airflow was provided, as shown in FIG. 6, in the state where the branch part 6a of the nozzle 6 was orthogonally crossed with respect to the through-hole 5b. The jet end face 6c may be formed to have an inclined surface so as to face the airflow from the blower 4. Furthermore, even if it forms so that the ejection end surface 6c may have an inclined surface so that it may face with respect to the airflow from the air blower 4, and the branch part 6a of the nozzle 6 inclines with respect to the through-hole 5b of the jet head body 5. It ’s good.

  The said inclined surface inclines about 30-45 degree | times on the basis of an airflow direction, and faces with respect to an airflow. By providing the inclined surface facing the airflow in this way, it is possible to spray in a state where the spray diameter is made more uniform as compared with the ejection end face 6c which is horizontal to the airflow. That is, since the inclined surface is thinly stretched by the high-speed airflow through the inclined surface with the front side becoming higher, and the inclined surface is easily subjected to the airflow, the sucked liquid spreads over a wide range in front of the ejection hole 6b in the inclined surface. It becomes easy. And since it becomes sharp-headed in the edge part of the ejection end surface 6c in the said front side, it can spray in the state which made the spray diameter more uniform.

  Also, if the inclination angle is less than 30 degrees with respect to the airflow direction, it is not preferable because the difference in spray diameter is slightly different from the ejection end face 6c that is horizontal to the airflow. On the other hand, if the inclination angle is larger than 45 degrees with respect to the airflow direction, the airflow tends to flow into the ejection holes 6b of the nozzle 6 and the suction force decreases, resulting in a decrease in the spray amount.

  Further, as shown in FIG. 7, the nozzle 6 has an inclined surface so that the ejection end surface 6 c faces the airflow from the blower 4 in a state where the branch portion 6 a of the nozzle 6 is orthogonal to the through-hole 5 b, and the inclination The front end of the surface may be formed to have a horizontal plane so as to be horizontal to the airflow. Further, the ejection end surface 6 c may be formed to have an inclined surface and a horizontal surface, and the branch portion 6 a of the nozzle 6 may be inclined with respect to the through hole 5 b of the nozzle body 5.

  The said inclined surface inclines about 40-55 degree | times on the basis of an airflow direction, and faces with respect to an airflow. More preferably, the inclination is about 45 to 50 degrees. Further, the horizontal plane is formed by cutting the nozzle 6 having a diameter of 1 mm at the ejection hole 6b of the nozzle 6 and a diameter of 1.5 mm at the ejection end face 6c in which the ejection hole 6b is formed by cutting at an inclination angle of 45 degrees. It is formed by horizontally cutting a lower position of about 0.2 to 0.3 mm in the vertical direction (the axial direction of the nozzle 6) from the tip of the inclined surface. At this time, in the longitudinal sectional view of the nozzle 6, the ejection end face 6c located on the front side with respect to the airflow is formed to be a horizontal plane.

  Compared with the ejection end face 6c (see FIG. 6) in which only the inclined surface facing the airflow is formed by providing the inclined surface facing the airflow and the horizontal plane that is horizontal to the airflow in this way. The thickness of the sprayed liquid band can be reduced, and the spray can be sprayed far away with increased straightness.

  That is, on the ejection end face 6c (see FIG. 6) where only the inclined surface facing the airflow is formed, the spray diameter can be made more uniform and sprayed in a state along the inclined surface. Since this is sprayed by the air flow, the thickness of the subsequent spray liquid band can be increased and sprayed over a wide range.

  On the other hand, by forming the tip of the inclined surface so as to have a horizontal surface so as to be horizontal to the airflow, similarly, the front side is thinly stretched by the high-speed airflow through the inclined surface that becomes higher, and the Since the inclined surface easily receives airflow, the sucked liquid easily spreads over a wide area in front of the ejection hole 6b in the inclined surface. Thereafter, spraying can be performed in a state where the spraying direction is set to the horizontal direction by a horizontal plane which is horizontal to the airflow. Thereby, it is possible to spray far away in a state where the spray diameter is made more uniform, and the thickness of the spray liquid sprayed is made thinner and the straightness is further increased. That is, in the said horizontal surface, it is the meaning that at least one part of the ejection end surface 6c located in the front side with respect to an airflow becomes a horizontal surface in the longitudinal cross-sectional view of the nozzle 6.

  Moreover, it is desirable to set the position of the nozzle 6 so that the center position of the sprayed liquid band is positioned at the approximate center of the inner shape in the through hole 5b. Specifically, the position of the horizontal plane in the nozzle 6 is set to be positioned below the center position of the inner shape in the through hole 5b. Thereby, the spray liquid ejected from the ejection hole 6b does not collide with the inner wall surface of the through hole 5b, and the particle diameter can be made uniform.

  At this time, if the inclination angle is less than 40 degrees with respect to the airflow direction, it is preferable that the spray diameter is uniform because it is slightly different from the ejection end face 6c (see FIG. 3) that is horizontal to the airflow. Absent. On the other hand, if the inclination angle is larger than 55 degrees with respect to the airflow direction, the airflow tends to flow into the ejection holes 6b of the nozzle 6 and the suction force decreases, resulting in a decrease in the spray amount. In this way, the inclination angle is different from that of the ejection end face 6c (see FIG. 6) where only the inclined face facing the airflow is formed. This is because the air resistance with respect to the ejection end face 6c of the nozzle 6 changes minutely by forming a horizontal plane.

  Furthermore, as shown in FIG. 7, a groove-like portion 5 c that is inclined with respect to the axial direction of the through hole 5 b can be formed on the inner peripheral surface of the through hole 5 b in the nozzle body 5. The groove-like portion 5c is formed at equal intervals on the entire circumference from one end portion to the other end portion of the inner peripheral surface of the through hole 5b. For example, the groove 5c is formed with an inclination of about 5 to 30 degrees with respect to the axial direction of the through hole 5b. More preferably, it is formed with an inclination of about 10 to 15 degrees. Moreover, the depth of the groove-shaped part 5c shall be about 0.2-0.5 mm, and the width | variety of the groove-shaped part 5c shall be about 1-2 mm.

  By providing the groove 5c in this manner, the spray liquid ejected from the through hole 5b is sprayed while forming a swirling flow. Thereby, it can spray to a distant place in the state which made the thickness of the belt of the sprayed liquid sprayed substantially constant. In addition, when spraying chemicals such as agricultural chemicals on plants and the like, the chemicals can be made to penetrate to the back side of the leaves by a swirling flow. Therefore, efficiency can be improved without spraying a large amount of chemical solution, which leads to cost reduction.

  At this time, if the inclination angle is less than 5 degrees with respect to the axial direction, a swirl flow is not easily formed, which is not preferable. On the other hand, if the inclination angle is larger than 30 degrees with respect to the axial direction, it is not preferable because the spraying distance is reduced due to an increase in air resistance.

  In the embodiment described above, the shape, dimensions, material, and the like of the base 2, the casing 3, the nozzle body 5, and the nozzle 6 can be changed as appropriate. Of course, a part of the configuration can be omitted, and a part of the configuration can be extracted.

DESCRIPTION OF SYMBOLS 1 Sprayer 2 Base 3 Casing 4 Blower 5 Blower 5a Recessed part 5b Recessed hole 5c Groove-shaped part 6 Nozzle 6a Branching part 6b Ejection hole 6c Ejection end face 7 Cap 8 Liquid feed pipe 9 Connecting member 10 Tank

Claims (10)

A casing,
A blower provided at one end of the casing;
A jet body fixed to the other end of the casing and having a through-hole that is smaller than the inner shape of the casing toward the spray direction,
A nozzle that is fixed to the nozzle body and arranged so that a jetting direction has a predetermined angle with respect to the airflow from the blower in the through hole;
A tank that is connected to the nozzle via a liquid feed pipe and that stores liquid;
A sprayer comprising:   2. The sprayer according to claim 1, wherein the nozzle is disposed at a position where the sprayed liquid that has been ejected does not collide with an inner wall surface of the through hole in the nozzle body.   3. The sprayer according to claim 1, wherein the nozzle is disposed so that a spraying direction of the sprayed spray is orthogonal to the air flow in the through hole.   The sprayer according to any one of claims 1 to 3, wherein the nozzle is formed with an inclined surface such that a jet end face having a jet hole faces an air flow from the blower.   The sprayer according to any one of claims 1 to 3, wherein the nozzle is formed such that a jet end face having a jet hole is horizontal with respect to an airflow from the blower.   The nozzle has an inclined surface so that an ejection end surface having an ejection hole faces the airflow from the blower, and has a horizontal surface so that a tip portion of the inclined surface is horizontal to the airflow. The nebulizer according to any one of claims 1 to 3.   The sprayer according to any one of claims 1 to 6, wherein a groove-like portion inclined with respect to the axial direction is formed on an inner peripheral surface of the through hole.   The sprayer according to any one of claims 1 to 7, wherein the nozzle has a plurality of branch portions that branch the ejection direction, and the through hole is formed to correspond to the branch portion. .   The sprayer according to any one of claims 1 to 8, wherein the casing is provided with a pressurization pipe that sends an airflow from the blower into the tank. The sprayer according to any one of claims 1 to 9, wherein the ejection end face is located at a substantially center of the through hole.

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