JP2021178267A - Nozzle with bubble generating mechanism - Google Patents

Abstract

To provide a nozzle with a bubble generating mechanism having enhanced applicability to a pump.SOLUTION: A nozzle with a bubble generating mechanism to be installed in a discharge pipe passage X of a pump device, includes: a water absorption side part 3 to be connected to the discharge pipe passage X; a nozzle body part 2 to be connected to a tip 3a of the water absorption side part 3 and having a handle part 4 to be held by an operator's hands; and a UFB generator 20 contained in at least either one of the nozzle body part 2 and the water absorption side part 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to a nozzle with a bubble generation mechanism.

For example, in the agricultural field and the like, the use of microbubbles (hereinafter referred to as MB) and ultrafine bubbles (hereinafter referred to as UFB) is attracting attention. MB is a bubble having a diameter of 1 μm or more and less than 100 μm. UFB is a bubble having a diameter of less than 1 μm. There are various types of gas used when dissolving or containing fine bubbles in a liquid. There are also various types of liquids. In the agricultural field, mainly, fine air bubbles are generated in water and oxygen in the air is used. Therefore, a high pressure pump or the like is used. Patent Document 1 describes a system in which fine bubbles such as MB and UFB are contained in water supplied to a field to circulate nutrients. The microbubble generator dissolves the microbubbles in the wastewater pumped by the pump. On the other hand, Patent Document 2 discloses a shower head in which a bubble generation mechanism for generating MB or the like is incorporated.

Japanese Unexamined Patent Publication No. 2018-7646 International Publication No. 2013/012069

Conventional bubble generators applied to pumps tend to be larger and more expensive. In addition, there were many restrictions on the place of use and installation. For example, high-pressure pumps include stationary pumps and portable pumps, but it is difficult to install a bubble generator because the pump itself is large. Conventional shower heads with a built-in bubble generation mechanism are designed for home use (for general water pressure) and are difficult to apply to high-pressure pumps.

It is an object of the present invention to provide a nozzle with a bubble generation mechanism having enhanced applicability to a pump.

The present invention is a nozzle (1) with a bubble generation mechanism attached to the discharge pipe (X) of the pump device, and has a water absorption side portion (3) connected to the discharge pipe (X) of the pump device and water absorption. A nozzle body portion (2) having a handle portion (4) connected to the tip portion (3a) of the side portion (3) and held by an operator's hand, and a nozzle body portion (2) or a water absorption side portion (3). ), A fine bubble generator (20) built in at least one of the above.

According to the nozzle with a bubble generation mechanism (1), the water absorption side portion (3) connected to the discharge pipe line (X) of the pump device or the nozzle body portion (2) connected to the tip end side thereof. A fine bubble generator (20) is built in. When the high-pressure liquid sent from the pump device passes through the water absorption side portion (3) and the nozzle body portion (2), the fine bubble generator (20) generates fine bubbles and mixes them with the discharged liquid. .. As described above, since the fine bubble generator (20) is built in the nozzle attached to the discharge pipe line (X) of the pump device, the applicability to the pump is enhanced.

The fine bubble generator (20) may be built in the handle portion (4) of the nozzle body portion (2). Since the fine bubble generator (20) is built in the handle (4), which is composed of a combination of relatively simple parts, the fine bubble generation mechanism can be easily performed without significantly changing the original nozzle structure. Can be installed.

The handle portion (4) of the nozzle body portion (2) may include a liquid flow path opening / closing mechanism (30) that can be operated by an operator's hand. In this case, the operator can switch between discharging and stopping the liquid by operating the opening / closing mechanism (30), which enhances the convenience of using the nozzle (1) with the bubble generating mechanism.

INDUSTRIAL APPLICABILITY According to the present invention, a nozzle with a bubble generation mechanism having enhanced applicability to a pump is provided.

It is a vertical sectional view of the nozzle with a bubble generation mechanism which concerns on one Embodiment of this invention. It is a vertical sectional view showing the vicinity of the fine bubble generator of FIG. 1 in an enlarged manner.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The nozzle 1 with a bubble generation mechanism of the present embodiment described below is connected to, for example, a stationary or portable pump and is used for agricultural work and the like.

First, with reference to FIG. 1, the basic configuration of the nozzle 1 with a bubble generation mechanism according to the embodiment will be described. The nozzle 1 with a bubble generation mechanism is attached to a discharge pipe line X of a pump device (not shown) to discharge (spray) a liquid such as water. The nozzle 1 with a bubble generation mechanism includes a tubular water absorption side portion (suction side portion) 3 connected to the discharge pipe line X, and a nozzle body portion 2 held by an operator. The nozzle 1 with a bubble generation mechanism can be applied to any type of pump device.

The nozzle 1 with a bubble generation mechanism is particularly applied to a high pressure pump capable of pumping a liquid such as water at a high pressure. The pump device may be a stationary pump or a portable pump. The discharge pipe X may be a flexible pipe such as a hose connected to the discharge portion of the pump device. The discharge pipe line X may be a fixed pipe or the like. The discharge pipe line X may be a combination of a fixed pipe and a flexible pipe. The power source (drive source) of the pump is not particularly limited. The pump device to which the nozzle 1 with the bubble generation mechanism is applied may be a motor type pump device, a battery type (rechargeable) pump device, or an engine type pump device. ..

The nozzle 1 with a bubble generation mechanism discharges high-pressure water from the discharge port 12 at the tip. The nozzle 1 with a bubble generating mechanism is provided with a nozzle lance mounting member 11 provided at the tip, and the nozzle lance mounting member 11 is a rod-shaped spray nozzle which is a member different from the nozzle 1 with a bubble generating mechanism. Nozzle lance (not shown) is attached. The nozzle lance mounting member 11 may not be mounted, and only the nozzle 1 with a bubble generation mechanism may be used for spraying high-pressure water.

The water absorption side portion 3 has an outer tubular member 5 which forms the main body of the water absorption side portion 3 and has a tangible shape, and an inner tubular member 6 inserted inside the outer tubular member 5. A first flow path P1 for introducing a liquid such as water is formed in the inner tubular member 6. The base end portion 3b of the water absorption side portion 3 is connected to the discharge pipe line X. The base end portion 10b of the nozzle main body portion 2 is connected to the tip end portion 3a of the water absorption side portion 3. The first flow path P1 (inner tubular member 6) of the water absorption side 3 and the second flow path P2 in the nozzle body 2 are connected by the internal connecting pipe 7 arranged in the housing 10 of the nozzle body 2. Has been done. The connecting structure of the nozzle body 2 and the water absorption side 3 is not limited to the structure shown in FIG. 1, and various known structures applicable to the nozzle for pump may be adopted.

The nozzle body 2 has a housing 10 that houses various mechanical and electrical components required for the nozzle. The housing 10 is a cylindrical member having a diameter larger than that of the water absorption side portion 3. The nozzle body 2 has a handle 4 held by an operator's hand. The central portion and the tip portion of the housing 10 correspond to the handle portion 4. The handle portion 4 is formed as, for example, a cylindrical portion having an appropriate size (diameter) so that it can be easily gripped by one hand of an operator.

The nozzle 1 with a bubble generation mechanism has a structure capable of dissolving or containing fine bubbles in high-pressure water sent from a pump. The fine bubbles generated in the pump 100 are, for example, UFB having a diameter of less than 1 μm. In the pump 100, MB having a diameter of 1 μm or more and less than 100 μm may be generated as fine bubbles. The pump 100 is used, for example, for irrigation and the like, and enables the growth of agricultural products to be promoted.

More specifically, the handle portion 4 contains (accommodates) a UFB generator (fine bubble generator) 20 that generates UFB which is fine bubbles. The handle portion 4 has a cylindrical nozzle lance mounting member 11 to which the nozzle lance is mounted. The nozzle lance mounting member 11 has a mounting portion 11a including a screw portion, and for example, a nozzle lance connecting portion is screwed into and fixed to the mounting portion 11a. The nozzle lance mounting member 11 is fixed to the tip portion 10a of the housing 10. The UFB generator 20 is built in a region extending over the tip portion 10a of the housing 10 and the nozzle lance mounting member 11. Existing parts of the pump nozzle are utilized, and as a result, as shown in FIG. 1, with the UFB generator 20 built-in, the external dimensions of the entire nozzle are (before mounting the UFB generator 20). (Compared to), it hasn't changed much.

The peripheral configuration of the UFB generator 20 and the UFB generator 20 will be described with reference to FIGS. 1 and 2. As shown in FIGS. 1 and 2, the UFB generator 20 has two members arranged concentrically (around a common axis) with the third flow path P3 in the housing 10. The UFB generator 20 has an introduction member 21 attached to the tip portion 10a of the housing 10 and a UFB generating member (fine bubble generating portion) 22 built in the nozzle lance mounting member 11. As shown in FIG. 2, the base end portion 21b of the introduction member 21 is embedded in the tip end portion 10a of the housing 10. The introduction holes 21h formed in the wall portion on the base end side of the cylindrical introduction member 21 are concentrically arranged and communicate with the third flow path P3 of the nozzle main body portion 2. The third flow path P3 and the introduction hole 21h have the same diameter, but the cylindrical portion 21c formed on the downstream side of the introduction hole 21h is formed so as to be a flow path having a diameter larger than that of the third flow path P3. Has been done.

The UFB generating member 22 is housed (stored) in the cylindrical main body portion 11b of the nozzle lance mounting member 11. The main body portion 11b is fixed to the tip portion 21a of the introduction member 21 protruding from the tip portion 10a of the housing 10, for example, by screwing. The annular inlet end surface 22f of the UFB generating member 22 is in contact with the annular tip surface 21e of the introduction member 21. The outlet end surface 22e of the UFB generating member 22 faces the step surface 11d formed in the nozzle lance mounting member 11, and is abutted against, for example, the step surface 11d.

In the UFB generating member 22 having a cylindrical shape as a whole, the conical inlet tapered portion 22b, the outlet cylindrical portion 22a, and the orifice portion 22c which is a pore formed between the inlet tapered portion 22b and the outlet cylindrical portion 22a. And are formed. These inlet tapered portions 22b, orifice portion 22c, and outlet cylindrical portion 22a are formed symmetrically around the central axis (corresponding to the axes of the third flow path P3 and the introduction member 21) and communicate with each other. ..

In the UFB generator 20 configured as described above, the third flow path P3 in the nozzle main body 2, the cylindrical portion 21c in the introduction member 21, the inlet tapered portion 22b in the UFB generating member 22, and the orifice portion 22c. The UFB generation space formed by the outlet cylindrical portion 22a and the fourth flow path P4 in the nozzle lance mounting member 11 communicate with each other. The UFB generating member 22 generates UFB by the cavitation effect when the high pressure water is passed through the nozzle. The innumerable UFBs generated in the UFB generating member 22 are discharged to the downstream side of the UFB generating member 22 and sent to the nozzle lance together with the high pressure water. When the pump device and the nozzle 1 with a bubble generating mechanism are used for agriculture, the UFB is, for example, fine bubbles of air (oxygen). The high-pressure water in which the UFB is dissolved or contained is discharged from the nozzle lance and supplied (for example, sprayed) to the field. By supplying water containing UFB to the field, for example, the growth of agricultural products can be promoted and the yield can be expected to increase.

The specific configuration of the UFB generator 20 is not limited to the above configuration shown in FIG. As the UFB generator 20, for example, various types of bubble generators disclosed in Japanese Patent No. 6279179 may be applied. In any case, it is incorporated in the nozzle body 2 of the nozzle 1 with a bubble generation mechanism, and UFB is generated with the passage of high-pressure water.

Further, in the nozzle 1 with a bubble generation mechanism, the handle portion 4 of the nozzle body portion 2 includes the opening / closing mechanism 30 of the liquid flow path. The opening / closing mechanism 30 is housed in an opening / closing lever 31 rotatably attached to the tip portion 10a of the housing 10 and an opening / closing cavity portion 10c in the housing 10, and projects from the inner surface (upper surface) of the opening / closing lever 31. The opening / closing member 33 pushed up by the raised protrusion 32 is included. As shown in FIG. 2, the opening / closing cavity portion 10c in the housing 10 is oriented in a direction orthogonal to the axial direction of the second flow path P2 and the third flow path P3 (direction corresponding to the diameter of the housing 10). It extends, and the opening / closing member 33 is held between the coil spring 39 and the protrusion 32. In the closed state shown in FIG. 2, the opening / closing member 33 is urged by the coil spring 39 and is located at the lower closing position, and shuts off the second flow path P2 and the third flow path P3.

The opening / closing lever 31 is arranged below the housing 10 and faces the bottom wall portion 10f of the housing 10. When the opening / closing lever 31 is grasped by the operator's hand and the opening / closing lever 31 rotates around the rotation fulcrum 38 (rotates counterclockwise in the figure), the protrusion 32 that comes into contact with the lower end 33b of the opening / closing member 33 is a coil spring. The opening / closing member 33 is pushed up against the urging force of 39. By sliding the opening / closing member 33 upward, the narrowly constricted flow path opening portion 33a formed in the body portion of the opening / closing member 33 communicates with the second flow path P2.

By such an operation, the second flow path P2 and the third flow path P3 are opened (opened). With the opening / closing member 33 located at the open position, the engaging piece 36 penetrates into the opening 10e formed in the bottom wall portion 10f of the housing 10 and engages with the bottom wall portion 10f. The engaging piece 36 is rotatable about a rotation fulcrum 35 and is urged rearward (counterclockwise in the figure) by a torsion spring 37. By maintaining the state in which the engaging piece 36 is engaged with the bottom wall portion 10f, the open state of the flow path is maintained. For example, when the operator wants to stop the discharge (sprinkling) of water while the water is being sent from the pump, the operator can release the open state by pressing the release button 34 with a finger (index finger or the like). That is, when the release button 34 is pressed, the engaging piece 36 rotates forward (clockwise in the figure) against the urging force of the torsion spring 37, and the engaging piece 36 is engaged with the bottom wall portion 10f. Is released. The opening / closing member 33 is lowered by receiving the urging force of the coil spring 39, and returns to the above-mentioned closing position.

According to the nozzle 1 with a bubble generation mechanism of the present embodiment having the configuration described above, the UFB generator 20 is built in the water absorption side portion 3 connected to the discharge pipe line X of the pump device. When the high-pressure liquid sent from the pump device passes through the water absorption side portion 3 and the nozzle main body portion 2, fine bubbles are generated by the UFB generator 20 and mixed with the discharged liquid such as water. As described above, since the UFB generator 20 is built in the nozzle attached to the discharge pipe line X of the pump device, the applicability to the pump is enhanced. In addition, it can be connected and used regardless of the pump device of the connection source, and UFB can be generated more easily.

In particular, in the present embodiment, the UFB generator 20 is built in the handle portion 4 of the nozzle body portion 2. Since the UFB generator 20 is built in the handle 4 composed of a combination of relatively simple (uncomplicated) parts, the fine bubble generation mechanism can be easily obtained without significantly changing the original nozzle structure. Can be installed.

Further, the handle portion 4 of the nozzle body portion 2 includes a liquid flow path opening / closing mechanism 30 that can be operated by an operator's hand. The operator can switch between spraying (discharging) and stopping the liquid by operating the opening / closing mechanism 30, and the handleability is improved. This enhances the convenience of using the nozzle 1 with the bubble generation mechanism.

In the past, even if an attempt was made to apply a fine bubble generation mechanism to a pump, the device tended to be large and expensive. In addition, there were many restrictions on the place of use and installation. According to this embodiment, UFB water can be obtained by using a normal (general purpose) pump without using an expensive pump device. It can also be attached to a portable machine, dramatically improving the degree of freedom in the place of use. When the nozzle 1 with a bubble generation mechanism is applied to the discharge hose of the rechargeable sprayer, UFB water can be generated by using the conventional sprayer. Since a lightweight and compact rechargeable sprayer is used, UFB water can be sprayed regardless of whether it is outdoors or indoors, even in a place where there is no power source or water source nearby.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, the fine bubble generator may be built in the water absorption side portion 3 of the nozzle 1 with a bubble generation mechanism. The arrangement of the fine bubble generator can be appropriately changed depending on the layout of each member in the nozzle 1 with the bubble generation mechanism. Even if the fine bubble generator (specifically, the UFB generating member 22 of the above embodiment) is arranged at any of the portions, the compactness of the nozzle as a whole is ensured. The fine bubble generator may be provided on both the nozzle main body 2 and the water absorption side portion 3, or may be provided at an intermediate position (straddling) between the nozzle main body portion 2 and the water absorption side portion 3.

The fine bubble generator may be installed on the discharge path of the liquid in the nozzle. The nozzle lance (spray nozzle) may be attached to the tip of the nozzle with a bubble generation mechanism, and a spray hose may be attached, or a joint for connecting the spray pipe may be attached.

The present invention is not limited to the sprayer, and the present invention may be applied to, for example, a high pressure washer. In that case, the fine bubble generator may be installed in the vicinity of the spray switchgear (so-called gun). The present invention may be applied to a nozzle with a bubble generation mechanism that does not have an opening / closing mechanism.

1 ... Nozzle with bubble generation mechanism, 2 ... Nozzle body, 3 ... Water absorption side, 3a ... Tip, 3b ... Base end, 4 ... Handle, 11 ... Nozzle lance mounting member, 11a ... Mounting, 12 ... Discharge port, 20 ... UFB generator (fine bubble generator), 21 ... introduction member, 22 ... UFB generator (fine bubble generator), 22c ... orifice part, 30 ... opening / closing mechanism, X ... (of pump device) Discharge pipeline.

Claims (3)

A nozzle (1) with a bubble generation mechanism attached to the discharge pipe line (X) of the pump device.
The water absorption side portion (3) connected to the discharge pipe line (X) of the pump device, and
A nozzle body portion (2) connected to the tip portion (3a) of the water absorption side portion (3) and having a handle portion (4) held by an operator's hand.
A nozzle with a bubble generation mechanism, comprising a fine bubble generator (20) built in at least one of the nozzle body portion (2) or the water absorption side portion (3). The nozzle with a bubble generation mechanism according to claim 1, wherein the fine bubble generator (20) is built in the handle portion (4) of the nozzle body portion (2). The nozzle with a bubble generation mechanism according to claim 2, wherein the handle portion (4) of the nozzle body portion (2) includes a liquid flow path opening / closing mechanism (30) that can be operated by the operator's hand. ..

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