JPH08243443A - Spray nozzle - Google Patents

Abstract

PURPOSE: To provide a spray nozzle comprising a main body, a nozzle and a diffuser which can be easily disassembled or assembled properly. CONSTITUTION: An elastic packing 4 is inserted into the insertion part of a nozzle body 2. In addition, a nozzle 5 is introduced into the recessed insertion part 23 of a diffuser 3. When inserting the nozzle 5 into the recessed insertion part 23, the central axis of a jet orifice 20 at the tip of an intake path 19 in the nozzle 5 matches the control axis of the jet passage 26 of the diffuser 3, because a tapered face formed on the inner wall surface of the main body 22 of the diffuser 3 coincides with a tapered face formed on the circumferential end of a flange 18 on the nozzle 5. Next, the diffuser 3 is screwed into the nozzle body 2 and is tightened. Thus, the bottom of the recessed insertion part 23 presses the flange 18 of the nozzle 5 in the advance direction of the diffuser 3, so that both are engaged with each other to prevent them from becoming separated. The disassembly procedures are performed oppositely to the assembly procedures.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray nozzle for spraying a liquid onto a target object in a mist state, which can be easily disassembled for easy cleaning, and can be easily assembled into a normal spray nozzle by anyone after cleaning. A spray nozzle that can be set.

[0002]

2. Description of the Related Art A spray nozzle for spraying a liquid in a mist state,
For spraying chemicals to control pests, spraying water so that vegetables are not kept dry and stored at low temperature to keep freshness, spraying disinfectant for disinfecting fingers, etc.
Its purpose of use is various. The spray nozzles used in various places have different manufacturing accuracy depending on the purpose of use. In the case of spraying a chemical solution for pest control or spraying water for preventing vegetables from drying, it suffices if the liquid is evenly spread and if it is in a mist state, the directionality is not a problem. Don't However, in the case of a spray nozzle that is used in a hand disinfecting device that sprays a disinfectant liquid in a mist state, when spraying a hand under the spray nozzle, the amount of liquid sprayed so that the entire finger can be disinfected in an appropriate amount. It is required that the mist has a certain funnel-like spread and is evenly sprayed. For this purpose, it is necessary to manufacture with high accuracy so that air and liquid are sprayed radially and uniformly without liquid leakage or air leakage.

For disinfecting a finger, a sensor detects that a hand is inserted and ejects a disinfectant solution from a nozzle in a mist state, and a hand disinfecting device is disclosed, for example, in Japanese Patent Publication No. 7-2155. There are kimonos. This hand sanitizer is equipped with a rising part at the rear end of the main part of the disinfecting device that houses the disinfectant solution tank, electromagnetic pump, etc., and a hood with a front opening is provided in front of this rising part to form a disinfection chamber. Then, a signal is sent to the electromagnetic pump inside the main body of the sterilizer by the detection of the hand inserted into the sterilization chamber in front of the two disinfectant spray nozzles installed in the center of the top and bottom of the sterilization chamber. The disinfectant solution sent and pumped from the disinfectant solution tank is ejected from the disinfectant solution spray nozzle through the disinfectant solution supply pipe. When the disinfectant sprayed from the two disinfectant spray nozzles begins to get on your hands,
While moving your palm to the left and right in the disinfecting room, spread the disinfectant solution widely on both hands, and after the disinfectant solution has stopped spraying from the two disinfectant solution spray nozzles, disinfect the solution with both hands outside the disinfectant room. Disinfection is completed by rubbing in.

[0004]

The two disinfectant spray nozzles are of a fixed type and cannot be easily removed from the disinfection chamber. However, when disinfecting a finger, the finger may come into contact with the two disinfectant spray nozzles and stain the tip of the disinfectant spray nozzle, or the disinfectant may dry and clog the tips of the two disinfectant spray nozzles. In such a case, it is necessary to take apart the disinfecting device main body, take out the two disinfectant spray nozzles, and replace the nozzles.

An object of the present invention is to clean or wash the nozzle tip so that the tip of the nozzle is clogged, or the chemical liquid used last time does not remain and mix in when another chemical liquid is used. In addition, anyone can easily disassemble it, and anyone can easily and surely center it when reassembling it to the original state.

[0006]

A spray nozzle according to a first aspect of the present invention is provided with an air passage for supplying air of a predetermined pressure supplied from the outside and an air passage adjacent to the air passage and supplied from the outside. A liquid passage for supplying a liquid, a nozzle body including an insertion portion for communicating with the air passage and for inserting a nozzle, a cylinder forming an introduction path for introducing air, and an outer peripheral surface of the cylinder. A nozzle provided with an appropriate number of holes formed therein, the nozzle being detachably attached to the insertion portion so that the introduction passage of the cylindrical body communicates with the air passage of the nozzle body; and the flange of the nozzle. Air that is closely fitted to the nozzle body and is removably fitted to the nozzle body and is jetted from the tip of the nozzle is supplied from the liquid passage of the nozzle body to the tip of the nozzle through the flange of the nozzle. Funnel mixed with liquid To thereby have a certain extent is obtained by constituting a diffuser spraying, by.

In the spray nozzle according to a second aspect of the present invention, the tip portion is formed of a cylindrical body, and an air passage for supplying air of a predetermined pressure supplied from the outside from a substantially central portion of the cylindrical body, A nozzle body provided with a liquid passage that is adjacent to the air passage and is formed in a wall surface of a tubular body and that conveys a liquid supplied from the outside, and an insertion portion that communicates with the air passage and inserts a nozzle. , Consisting of a cylindrical body forming an introduction path for introducing air and a flange provided on the outer peripheral surface of the cylindrical body and having an appropriate number of holes formed therein, and the introduction path of the cylindrical body communicates with the air passage of the nozzle body. As described above, a nozzle that is detachably inserted into the insertion portion via an elastic packing, and a nozzle that is closely fitted to the flange of the nozzle and is detachably fitted to the nozzle body, and ejects from the tip of the nozzle. To the air from the liquid passage of the nozzle body A diffuser for spraying to have a certain extent to the funnel-like mixed with a liquid to be supplied to the tip of the nozzle through the flange of the nozzle, which is constituted by.

In the spray nozzle according to the invention as defined in claim 3, the tip portion is formed of a cylindrical body, and an air passage for supplying air of a predetermined pressure supplied from the outside from a substantially central portion of the cylindrical body, A nozzle body provided with a liquid passage that is adjacent to the air passage and is formed in a wall surface of a tubular body and that conveys a liquid supplied from the outside, and an insertion portion that communicates with the air passage and inserts a nozzle. , A cylindrical body forming an introduction path for introducing air, and a flange formed on the outer peripheral surface of the cylindrical body and having a proper number of holes and a tapered outer peripheral end surface having a smaller diameter toward the tip center. A nozzle that is removably inserted into the insertion portion via an elastic packing so that the introduction path of the cylindrical body communicates with the air passage of the nozzle body, and an inner surface is formed on an outer peripheral end surface of a flange of the nozzle. The same taper is formed. , The air tightly fitted to the flange of the nozzle and removably fitted to the nozzle body and ejected from the tip of the nozzle from the liquid passage of the nozzle body through the flange of the nozzle It is composed of a diffuser that mixes with the liquid supplied to the tip and sprays the funnel with a certain spread.

In the spray nozzle according to a fourth aspect of the present invention, the tip portion is formed of a cylindrical body, and an air passage for supplying air having a predetermined pressure supplied from the outside from a substantially central portion of the cylindrical body, A nozzle body provided with a liquid passage that is adjacent to the air passage and is formed in a wall surface of a tubular body and that conveys a liquid supplied from the outside, and an insertion portion that communicates with the air passage and inserts a nozzle. , A cylindrical body forming an introduction path for introducing air, and a flange formed on the outer peripheral surface of the cylindrical body and having a proper number of holes and a tapered outer peripheral end surface having a smaller diameter toward the tip center. A nozzle that is removably inserted into the insertion portion via an elastic packing so that the introduction path of the cylindrical body communicates with the air passage of the nozzle body, and an inner surface is formed on an outer peripheral end surface of a flange of the nozzle. The same taper is formed. A negative pressure chamber that communicates with the hole of the flange of the nozzle and mixes air and a liquid jetted at a predetermined pressure from the tip of the nozzle is provided between the tip of the nozzle and communicates with the negative pressure chamber. An injection passage is provided whose central axis coincides with the central axis of the nozzle and regulates and guides air mixed with the liquid in the negative pressure chamber to a predetermined amount, and is closely fitted to the flange of the nozzle and the nozzle body. The air that is removably fitted into the nozzle and is jetted from the tip of the nozzle is mixed with the liquid that is supplied from the liquid passage of the nozzle body to the tip of the nozzle through the flange of the nozzle, It is composed of a diffuser that sprays liquid from the injection port with a certain spread in a funnel shape.

In the spray nozzle according to a fifth aspect of the present invention, the tip portion is formed of a tubular body, and an air passage for supplying air of a predetermined pressure supplied from the outside from a substantially central portion of the tubular body, A nozzle body provided with a liquid passage that is adjacent to the air passage and is formed in a wall surface of a tubular body and that conveys a liquid supplied from the outside, and an insertion portion that communicates with the air passage and inserts a nozzle. , A cylindrical body forming an introduction path for introducing air, and a flange formed on the outer peripheral surface of the cylindrical body and having a proper number of holes and a tapered outer peripheral end surface having a smaller diameter toward the tip center. A nozzle that is removably inserted into the insertion portion via an elastic packing so that the introduction path of the cylindrical body communicates with the air passage of the nozzle body, and an inner surface is formed on an outer peripheral end surface of a flange of the nozzle. The same taper is formed. A negative pressure chamber that communicates with the hole of the flange of the nozzle and mixes air and a liquid jetted at a predetermined pressure from the tip of the nozzle is provided between the tip of the nozzle and communicates with the negative pressure chamber. A central axis coincides with the central axis of the nozzle and is provided with an injection passage for guiding and regulating the air mixed with the liquid in the negative pressure chamber to a predetermined amount, and a hood having notches formed at several points at its tip end is provided. The nozzle is provided so as to be closely fitted to the flange of the nozzle and removably fitted to the nozzle body, and to the air jetted from the tip of the nozzle from the liquid passage of the nozzle body through the flange of the nozzle. And a diffuser that mixes with the liquid supplied to the tip of the nozzle and sprays the liquid from the jet port at the tip of the jet passage so as to have a certain spread in a funnel shape.

In a spray nozzle according to a sixth aspect of the present invention, the tip portion is formed of a cylindrical body, and an air passage for supplying air of a predetermined pressure supplied from the outside from a substantially central portion of the cylindrical body, A nozzle body provided with a liquid passage that is adjacent to the air passage and is formed in a wall surface of a tubular body and that conveys a liquid supplied from the outside, and an insertion portion that communicates with the air passage and inserts a nozzle. , A cylindrical body forming an introduction path for introducing air, and a flange formed on the outer peripheral surface of the cylindrical body and having a proper number of holes and a tapered outer peripheral end surface having a smaller diameter toward the tip center. A nozzle that is removably inserted into the insertion portion via an elastic packing so that the introduction path of the cylindrical body communicates with the air passage of the nozzle body, and an inner surface is formed on an outer peripheral end surface of a flange of the nozzle. The same taper is formed. A negative pressure chamber that communicates with the hole of the flange of the nozzle and mixes air and a liquid jetted at a predetermined pressure from the tip of the nozzle is provided between the tip of the nozzle and communicates with the negative pressure chamber. A central axis coincides with the central axis of the nozzle and is provided with an injection passage for guiding and regulating the air mixed with the liquid in the negative pressure chamber to a predetermined amount, and a hood having notches formed at several points at its tip end is provided. A protection rod is provided upright in the vicinity of the injection port at the tip of the injection passage, is closely fitted to the flange of the nozzle, is detachably fitted to the nozzle body, and is ejected from the tip of the nozzle. Air is mixed with the liquid supplied to the tip of the nozzle from the liquid passage of the nozzle body through the flange of the nozzle, and the liquid is made to have a certain funnel-like spread from the jet port of the tip of the jet passage. With a diffuser to spray It is obtained by configuration Te.

In the spray nozzle according to a seventh aspect of the present invention, the diffuser is fitted to the nozzle body by forming a male screw on the outer peripheral surface of the lead-out cylinder of the nozzle body and forming a female screw on the inner surface of the diffuser. This is done by screwing a diffuser onto the nozzle body.

According to an eighth aspect of the present invention, in a spray nozzle, the liquid supplied from the liquid passage of the nozzle body to the tip of the nozzle via the flange of the nozzle is pressurized and supplied with air. It is ejected together with air by the ejection, and is drawn up by the negative pressure generated at this time.

[0014]

According to the first aspect of the present invention, since the nozzle body, the nozzle and the diffuser can be disassembled, the tip of the nozzle is clogged or the previously used chemical solution remains when another chemical solution is used. If it becomes necessary to clean or wash it to prevent it from getting mixed in, it can be easily disassembled by anyone, and it can be easily assembled again by anyone, and the nozzle body The air passage, the nozzle introduction passage, and the diffuser injection passage can be accurately centered. According to the second aspect of the invention, since the nozzle is inserted into the nozzle body via the elastic packing, the diffuser can be attached by the elastic packing so that the diffuser does not easily come off. According to the third aspect of the invention, the outer peripheral end surface of the nozzle flange is formed to have a taper with a smaller diameter toward the tip center, and the inner wall surface of the diffuser is formed to have the same taper as the flange. After disassembling the main body, the nozzle, and the diffuser, the nozzle can be easily fitted to the diffuser when reassembling, and the centering can be performed accurately and easily.

According to the fourth aspect of the present invention, the diffuser is provided with a negative pressure chamber so as not to come into close contact with the tip of the nozzle,
Liquid is supplied to the negative pressure chamber from the hole of the nozzle flange,
Air is injected from the tip of the nozzle into this negative pressure chamber at a predetermined pressure to generate a negative pressure in the negative pressure chamber, and the negative pressure sucks up the fluid to mix the air and the liquid, and then the liquid mixing air is injected in the injection passage. Since the flow is rectified and guided, it is possible to always provide a constant spray liquid. According to the invention of claim 5,
Since the hood is provided with cutouts at the appropriate points at the tip of the diffuser, even if the tip of the diffuser is accidentally blocked by a hand etc., it escapes from the cutout provided in the hood. It is possible to prevent the air from flowing back into the liquid container through the liquid passage. Claim 6
According to the invention described in (1), since the hood is provided at the tip portion of the diffuser with appropriate cutouts, and the defense rod is provided in the vicinity of the injection port at the tip of the injection passage so as to stand lower than the height of the hood. Even if you insert your finger into the tip of the nozzle, the air will flow back into the liquid storage container through the liquid passage without the tip of the finger blocking the jet opening at the tip of the jet passage with the hood and blocking the jet port at the tip of the jet passage. There is nothing to do. According to the invention of claim 7, since the diffuser is configured to be screwed into the nozzle body, the pressing force of the diffuser toward the rear end side of the nozzle body and the elasticity of the diffuser fitted to the insertion portion of the nozzle body. Since the nozzle is sandwiched between the nozzle body and the diffuser by the elastic force of the packing, it is possible to prevent liquid leakage from occurring between the nozzle body and the diffuser. Claim 8
According to the invention described in (1), the liquid supplied to the negative pressure chamber of the diffuser is entrained in the air of a predetermined pressure ejected from the tip of the nozzle and is pumped up by the negative pressure. It does not require any special equipment to do.

[0016]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 8 show an embodiment of a spray nozzle according to the present invention. In the figure, reference numeral 1 is a spray nozzle, which sprays a liquid in a funnel shape with a certain spread. Reference numeral 2 denotes a nozzle body, 3 denotes a diffuser fitted to the nozzle body, and an elastic packing 4 and a nozzle 5 are housed between the nozzle body 2 and the diffuser 3 as shown in FIG.

The nozzle body 2 is, as shown in FIGS.
The introduction cylinder 6 having a circular cross section and the extraction cylinder 7 provided at a right angle to the introduction cylinder 6 are configured. A liquid passage 8 is provided from the upper part and an air passage 9 is provided from the lower part in the introduction cylinder 6, the air passage 9 is guided to a substantially central position of the discharge cylinder 7, and the liquid passage 8 is the air passage. It is guided to the inside of the wall surface of the lead-out tubular body 7 adjacent to 9. Reference numeral 10 denotes an insertion portion, into which the elastic packing 4 and the nozzle 5 are inserted, which is formed in a circular cross section and communicates with the air passage 9. A step 11 is formed at the tip of the insertion portion 10,
It is a liquid reservoir for making it possible to uniformly supply the liquid supplied from the liquid passage 8. As shown in FIG. 4, reference numeral 12 denotes a male screw formed on the outer peripheral surface of the lead-out tubular body 7, and reference numeral 13 in FIG. 3 denotes an O-ring fitted in the ring groove 14 of the lead-out tubular body 7. The O-ring 13 serves as a seal that prevents air from entering between the outer peripheral surface of the lead-out cylinder 7 of the nozzle body 2 and the inner wall surface of the diffuser 3. 15
Is a cam, which is formed in the shape of a quarter arc, and has a spray nozzle 1
It is used when adjusting the axis angle of the above from a vertical position to a horizontal position of approximately 90 degrees in multiple stages. Reference numeral 16 is a concave portion formed on the circumferential surface of the cam 15, and is for determining the axial angle of the spray nozzle 1 by fitting a stopper. The elastic packing 4 is formed in a ring shape, and synthetic rubber made of rubber or synthetic resin having elasticity is used.
Optimally made of rubber. The elastic packing 4 is housed in the insertion portion 10.

As shown in FIGS. 3 and 5, the nozzle 5 is composed of a tubular body 17 and a flange 18, and the inside of the tubular body 17 is from an air passage 9 formed in the introduction tubular body 6 of the nozzle body 2. It is formed in the introduction path 19 for introducing the pressure-fed air, and is formed in a taper shape having a small diameter toward the tip. The rear end diameter of the introduction passage 19 is formed to be substantially the same as the diameter of the air passage 9 formed in the introduction cylindrical body 6 of the nozzle body 2, and the central axis position of the air passage 9 and the introduction passage 19 are formed. The position of the central axis of is matched. This introduction route 1
A small-diameter injection port 20 is formed at the tip of 9. The flange 18 is provided on the outer peripheral surface near the tip of the cylindrical body 17, and is formed in a disc shape. An appropriate number of holes 21 are formed in the flange 18, and the holes 21 are
It is for passing the liquid supplied from the liquid passage 8 and filling the step 11 of the insertion portion 10. Further, the circumferential end surface of the flange 18 is provided with a taper of an angle α so as to have a small warp in the front end direction (rightward in FIG. 3).

As shown in FIG. 3, the diffuser 3 is formed in a lid shape, and a main body 22 is formed with a fitting recess 23 for fitting into the lead-out cylinder 7 of the nozzle main body 2. Reference numeral 24 is a female screw formed on the inner wall surface of the main body 22, and is configured to be screwed with the male screw 12 formed on the outer peripheral surface of the lead-out tubular body 7. Further, the inner wall surface of the main body 22 is provided with a taper with an angle α so that the inner wall surface of the main body 22 has a small diameter in the tip end direction (rightward in FIG. 3), similarly to the taper formed on the circumferential end surface of the flange 18. Reference numeral 25 in FIG. 3 denotes a negative pressure chamber, which is the fitting recess 2
3 is provided between the tip of the nozzle 5 and the tip of the nozzle 5 and communicates with the hole 21 of the flange 18 of the nozzle 5
In the chamber where a negative pressure is formed by the air injected at a predetermined pressure from the injection port 20 of the liquid, the liquid is sucked up from the liquid passage 8 through the hole 21 of the flange 18 and the negative pressure chamber 25 is formed when the negative pressure is formed. And is sucked by the negative pressure chamber 25 into the air jetted from the jet port 20 of the nozzle 5 to be mixed. The main body 22 is provided with an injection passage 26 that communicates with the negative pressure chamber 25, the central axis of which coincides with the central axis of the ejection port 20 of the nozzle 5, and guides the air ejected from the ejection port 20 of the nozzle 5. Has been. The injection passage 26 has a diameter larger than the diameter of the injection port 20 and a predetermined length, and the air injected from the injection port 20 of the nozzle 5 in the negative pressure chamber 25 is
Further, the air jetted from the jet port 20 of the nozzle 5 guides the air mixed with the liquid formed by entraining the liquid filling the negative pressure chamber 25. This injection passage 26 is
Since it has a predetermined length, the air jetted from the jet port 20 of the nozzle 5 into the negative pressure chamber 25 filled with the liquid and mixed with the liquid is rectified while traveling in the jet passage 26, and the liquid and the air are mixed. It has the effect of making the ratio uniform.

In FIG. 7, 27 is a defense rod and 28 is a hood. The hood 28 is formed at the tip of the main body 22 of the diffuser 3, and is formed so as to surround the spray port at the tip of the injection passage 26. The hood 28 is provided with a plurality of cutouts 2 at appropriate locations (in this embodiment, four locations at equal intervals).
9 are provided. In this way, the hood 28 having the notch 29 is provided at the tip of the main body 22 of the diffuser 3 when the chemical solution (for example, a disinfectant) sprayed from the injection nozzle 1 is put on the hand beyond the injection nozzle 1. In addition, it is to prevent the spray port at the tip of the injection passage 26 from being inadvertently blocked by the back of the hand or the like. When the spray port at the tip of the spray passage 26 is blocked by the back of a hand or the like, the air sprayed from the spray port 20 of the nozzle 5 is
Since there is no place to go because it cannot enter the inside of the diffuser 3, the liquid is stored from the negative pressure chamber 25 of the diffuser 3 through the hole 21 of the nozzle 5 and the step 11 of the nozzle body 2 and the liquid passage 8 of the nozzle body 2. Enter the container. When the air jetted from the jet port 20 of the nozzle 5 enters the liquid storage container in this way, the liquid storage container may be deformed or significantly depending on the pressure of the air jetted from the jet port 20 of the nozzle 5. In some cases, the liquid container may be damaged. However, in this embodiment, since the hood 28 having the cutout 29 is provided at the tip of the main body 22 of the diffuser 3, the chemical solution (for example, a disinfectant) sprayed from the injection nozzle 1 by reaching out in front of the injection nozzle 1. When the hand is put on the hand, even if the back of the hand is applied to the tip of the injection nozzle 1, the spray port at the tip of the injection passage 26 is not blocked, and the back of the hand or the like inadvertently blocks the tip of the hood 28 of the diffuser 3. Even if this happens, since the hood 28 has the notch 29, the injection passage 2
The mist-like liquid spouted from the spray port at the tip of 6 is notched 2
There is no possibility that the liquid will escape from 9 and flow back from the liquid passage 8 into the liquid storage container.

One or more protective rods 27 are provided near the spray port at the tip of the injection passage 26 (two in this embodiment).
The hood 28 is provided upright and is lower than the height of the hood 28 formed at the tip of the main body 22 of the diffuser 3. This is because if the hood 28 formed at the tip of the main body 22 of the diffuser 3 is provided higher than the height of the hood 28, the tip of the defense rod 27 may be hit by a hand or the like, which may be an obstacle. Functionally, it does not have to be provided lower than the height of the hood 28 formed at the tip of the main body 22 of the diffuser 3. The protection rod 27 is provided to prevent the spray port at the tip of the injection passage 26 from being inadvertently blocked with a fingertip or the like. When the spray port at the tip of the jet passage 26 is closed as described above, the air jetted from the jet port 20 of the nozzle 5 flows backward from the hole 21 of the nozzle 5 through the liquid passage 8 of the nozzle body 2 into the liquid storage container. The liquid container may be deformed or damaged. Since the hood 28 having the notch 29 is provided at the tip of the main body 22 of the diffuser 3, even if the tip of the hood 28 of the diffuser 3 is inadvertently blocked by the back of a hand or the like, the mist shape blown out from the spray port at the tip of the injection passage 26 Notch 2 for liquid
Since it escapes from 9, the spray port at the tip of the injection passage 26 is not blocked. However, since the diameter of the hood 28 of the diffuser 3 is large enough to fit a fingertip of a person, when a finger is stuck in the hood 28 of the diffuser 3, the tip of the body 22 of the diffuser 3 is attached. If the hood 28 having the notch 29 is provided, the injection passage 2
It is not possible to prevent the spray port at the tip of 6 from being blocked, and the phenomenon in which the air jetted from the jet port 20 of the nozzle 5 flows backward from the liquid passage 8 into the liquid storage container may occur. However, in this embodiment, since the protection rod 27 is provided in the vicinity of the spray port at the tip of the injection passage 26, the hood 2 of the diffuser 3 is provided.
Even if an attempt is made to insert a finger into the hood 8, it is not possible to insert the finger into the hood 28 due to the obstruction of the protection rod 27, and it is possible to prevent the spray port at the tip of the injection passage 26 from being blocked during spraying the liquid.
From the spray port at the tip of the spray passage 26, the liquid is sprayed in a mist form with a certain expanse in a funnel shape.

Next, the operation of this embodiment will be described.
Insert the elastic packing 4 into the insertion part 10 of the nozzle body 2,
The nozzle 5 is inserted into the fitting recess 23 of the diffuser 3.
When the nozzle 5 is inserted into the fitting recess 23 of the diffuser 3, the taper surface formed on the inner wall surface of the main body 22 of the diffuser 3 (the wall surface of the fitting recess 23) and the circumferential end surface of the flange 18 of the nozzle 5 are attached. Since the taper surface formed at the same position coincides with the tapered surface formed in the diffuser 3, it is only necessary to insert the nozzle 5 into the fitting recess 23 of the diffuser 3 and the central axis of the injection port 20 at the tip of the introduction path 19 of the nozzle 5 and the injection passage 26 of the diffuser 3. The central axis of can be easily matched. Thereafter, the diffuser 3 is screwed into the nozzle body 2 and tightened. By tightening the diffuser 3, the bottom surface of the fitting recess 23 presses the flange 18 of the nozzle 5 in the direction in which the diffuser 3 advances (leftward in FIG. 2). As a result, the nozzle 5 is
The rear end of the cylindrical body 17 of the nozzle 5 presses the elastic packing 4 in an attempt to move it to the left. The cylinder 1 of this nozzle 5
The pressing by the rear end of 7 causes a reaction force of the elastic packing 4, and the pressing force of the diffuser 3 toward the rear end side of the nozzle body 2 and the elastic packing 4 fitted to the insertion portion 10 of the nozzle body 2 are pushed. Due to the elastic force, the diffuser 3 is fitted to the nozzle body 2 so as not to be easily separated.

In the air passage 9 provided in the introduction cylinder 6 of the nozzle body 2 of the spray nozzle 1 assembled in this way, as shown by an arrow A in FIG. And so on. When air having a predetermined pressure is supplied from the air passage 9 by an electromagnetic pump or the like, it is introduced into the introduction passage 19 of the nozzle 5 from the center of the elastic packing 4 through the air passage 9 and from the injection port 20 at the tip of the introduction passage 19. It is vigorously injected into the negative pressure chamber 25 of the diffuser 3.

On the other hand, the liquid passage 8 provided in the introduction cylinder 6 of the nozzle body 2 of the spray nozzle 1 communicates with a liquid container (not shown), as shown by an arrow B in FIG. , The liquid is supplied without being pressurized. Now
When a predetermined pressure of air is supplied from the air passage 9 by an electromagnetic pump or the like and is injected from the tip end injection port 20 of the introduction passage 19 of the nozzle 5 into the negative pressure chamber 25 of the diffuser 3, the introduction passage 1
The air injected from the injection port 20 at the tip of 9 sucks out the air initially in the negative pressure chamber 25, and causes a negative pressure in the negative pressure chamber 25. When the pressure in the negative pressure chamber 25 becomes negative due to the air jetted from the jet port 20 at the tip of the inlet path 19, the liquid is sucked up from the liquid passage 8 and the step 11 of the insertion portion 10 of the nozzle body 2 is filled with the liquid. , Through the hole 21 of the flange 18 of the nozzle 5 to fill the negative pressure chamber 25. When the negative pressure chamber 25 is filled with the liquid, the injection port 2 at the tip of the introduction path 19 is filled.
The air injected from 0 entrains the liquid filled in the negative pressure chamber 25 to become air in which the liquid is mixed, and the injection passage 2
6 is injected. Injection port 20 at the tip of this introduction path 19
The liquid entrained in the negative pressure chamber 25 by the air ejected from is continuously performed as long as the air is ejected from the ejection port 20 at the tip of the introduction passage 19, and the negative pressure chamber 25 is continuously negatively charged. New liquid is supplied from the inside of the liquid passage 8 which supplies the liquid under pressure. When the operation of the electromagnetic pump or the like is stopped, the injection of air from the injection port 20 at the tip of the introduction path 19 of the nozzle 5 is stopped, and the liquid filled in the negative pressure chamber 25 becomes a hole in the flange 18 of the nozzle 5. It returns to the step 11 of the insertion part 10 of the nozzle body 2 through 21 and further returns to the liquid storage container through the liquid passage 8 of the nozzle body 2. Therefore, when the electromagnetic pump or the like is not operated, the liquid passage 8 and the nozzle 5
The hole 21 of the flange 18 and the negative pressure chamber 25 are not filled with liquid, and are in a state of containing air. And
The liquid mixed air introduced into the injection passage 26 of the diffuser 3 is rectified in the injection passage 26 to make the mixing ratio of liquid and air uniform. Then, the liquid is sprayed in a mist form with a spread from the spray port at the tip of the spray passage 26.

As described above, according to this embodiment, when the spray nozzle 1 is assembled, the air passage 9 of the nozzle body 2, the injection port 20 at the tip of the introduction passage 19 of the nozzle 5, and the injection passage of the diffuser 3 are provided. Since the centering of 26 can be performed accurately, all the air jetted from the jet port 20 at the tip of the introduction passage 19 of the nozzle 5 is guided into the jet passage 26 of the diffuser 3, and the air jetted from the jet port 20. Is the diffuser 3
The liquid can be normally sprayed from the spray port at the tip of the injection passage 26 without colliding with the wall surface of the inlet of the injection passage 26 and forming bubbles in the negative pressure chamber 25.

FIG. 8 shows a usage state of the spray nozzle 1 according to the present invention. In FIG. 8, a rising part 31 is integrally provided at the rear end of the disinfecting device main body 30 that houses a disinfectant solution tank, an electromagnetic pump, and the like, and a spherical front opening hood 32 is provided on the front side of the rising part 31. The spray nozzle 1 is provided at the upper end of the disinfection chamber 33 to be formed. A sensor for detecting insertion of a hand into the disinfection chamber 33 is attached in front of the spray nozzle 1, and when the both hands are inserted into the disinfection chamber 33, the sensor detects that and the disinfectant main body 3
A signal is sent to an electromagnetic pump inside 0, air is pressure-fed, the disinfectant solution is pumped up at a negative pressure through a disinfectant solution supply pipe, mixed with the pressure-fed air, and ejected from the spray nozzle 1 in a mist state. . Then, when the disinfectant solution ejected from the spray nozzle 1 begins to be applied to the hand, the disinfectant solution is sprinkled widely on both hands while moving the palm left and right in the disinfection chamber 33,
After the disinfection of the disinfectant solution has stopped from the spray nozzle 1, the disinfection solution is rubbed with both hands outside the disinfection chamber to complete the disinfection. The spray nozzle 1 attached to the upper end of the disinfection chamber 33 can easily remove the nozzle 5 by removing the diffuser 3, and the nozzle 5 and the diffuser 3 can be cleaned, and the fitting recess 2 of the diffuser 3 can be assembled.
Nozzle 5 is attached to 3 and diffuser 3 is attached to nozzle body 2
It can be easily restored to its original state by simply attaching (screwing) to.

9 and 10 show another usage state of the spray nozzle 1 according to the present invention. In FIG.
40 is a liquid atomizer. 41 is a storage container, the main body 42
It is detachably attached to and stores the liquid sprayed from the main body 42. The liquid to be stored in the storage container 41 is generally assumed to be a medical liquid used by doctors, nurses, nurses and the like, and includes disinfectant, physiological saline, detergent and the like. Particularly, it is effective for those that require spraying without using the container to use the liquid. 1 is a spray nozzle, which is provided so that the nozzle direction can be adjusted in a plurality of steps or in a stepless manner from a position of a substantially vertical position to a position of a substantially 90 ° width,
A negative pressure is applied to the liquid in the storage container 41 through a pipe communicating with a hole formed in the spray nozzle 1 by ejecting air supplied at a predetermined pressure from an electromagnetic pump built in the main body 42 of the liquid sprayer 40. It is pumped up with and sprayed with the air. Reference numeral 43 denotes a spraying time adjusting knob. By turning the spraying time adjusting knob 43, the operation time of the electromagnetic pump incorporated in the main body 42 is adjusted. By adjusting the spraying time of the spraying nozzle 1, the spraying nozzle 1 is adjusted. The amount of liquid sprayed from 1 is adjusted.

Reference numeral 44 denotes a sensor, which is provided in the vicinity of the spray nozzle 1 as shown in FIG. 2 and detects the insertion of the hand when the hand is inserted below the spray nozzle 1. . Then, the control circuit incorporated in the main body 42 of the liquid sprayer 40 is activated by the detection of the sensor 44. This spray nozzle 1 is basically the same as that of FIG. 2, but as shown in FIG. 10, the diffuser 3 makes the axial angle of the spray nozzle 1 vertical as shown by an arrow A with the introduction cylinder 6 as a rotation axis. It is different in that it is rotatably attached so as to be adjustable in a plurality of stages from a position to a position of approximately 90 degrees laterally. A cam 15 formed in the shape of a quarter arc is fixed to the introduction cylinder 6, and a plurality of recesses 16 are provided on the circumferential surface of the cam 15, and the stopper 50 is fitted into the recess 16. By doing so, the axial angle of the spray nozzle 1 is determined. Further, since the diffuser 3 of the spray nozzle 1 is configured to be detachable by screwing, the injection passage 26 of the diffuser 3 or the introduction passage 19 of the nozzle 5,
For cleaning when the injection port 20 of the nozzle 5 is clogged,
The screw-type diffuser 3 is rotated to be removed from the nozzle body 2, and the nozzle 5 is stored in the insertion portion 10 of the nozzle body 2 (may be stored in the fitting recess 23 of the diffuser 3). And separate it from the diffuser 3. The spray nozzle 1 can be assembled simply by inserting the nozzle 5 into the fitting recess 23 of the diffuser 3 and attaching (screwing) the diffuser 3 to the nozzle body 2.

[0029]

According to the present invention, it is possible to prevent liquid leakage from occurring between the nozzle body and the diffuser, and when the tip of the nozzle is clogged or another chemical liquid is used, the previously used chemical liquid can be used. It can be easily disassembled by anyone in the event that it needs to be cleaned or washed to prevent it from being left behind and mixed in, and the diffuser will easily fit the nozzle into the diffuser when reassembled. Only then, anyone can easily perform centering, and the tip of the diffuser will not get dirty with fingers.

[Brief description of drawings]

FIG. 1 is an overall outline view of a spray nozzle according to the present invention.

2 is a cross-sectional view of the spray nozzle shown in FIG.

FIG. 3 is an assembled sectional view of the spray nozzle shown in FIG.

4 is an overall perspective view of a nozzle body of the spray nozzle shown in FIG.

5 is a right side view of the nozzle body shown in FIG.

6 is a partially cutaway overall perspective view of the nozzle of the spray nozzle shown in FIG. 1. FIG.

7 is a partial cutaway perspective view of the diffuser of the spray nozzle shown in FIG. 1. FIG.

FIG. 8 is an overall view showing a usage example of the spray nozzle shown in FIG.

9 is an overall perspective view showing another usage example of the spray nozzle shown in FIG. 1. FIG.

10 is a cross-sectional configuration diagram of the spray nozzle illustrated in FIG.

[Explanation of symbols]

1 ………………………………………………………… Spray nozzle 2 …………………………………………………… Nozzle body 3… …………………………………………………… Diffuser 4 ………………………………………………………… Elastic packing 5 ………… ………………………………………………… Nozzle 6 ………………………………………………………… Introduction cylinder 7 ……………… ……………………………………… Outgoing cylinder 8 ………………………………………………………… Liquid passage 9 ………………… …………………………………… Air passage 10 ……………………………………………… Insertion part 11 ………………………… ………………………………… Step 12 …………………………………………………… Male screw 13 …………………………………… …………… O-ring 14 …………………………………………………… Ring groove 15 …………………………………………………… … Cam 16 ………………………………………………………… Concave 17 …………………………………………………… Cylinder 18 …… ……………………………………………… Flange 19 ……………………………………………… Introduction route 20 …………………… ……………………………………… Injection port 21 …………………………………………………… Hole 22 ……………………………… …………………… Main body 23 …………………………………………………… Fitting recess 24 ………………………………………… ………… Female screw 25 …………………………………………………… Negative pressure chamber 26 …………………………………………………… Fire path 27 …………………………………………………… Defense rod 28 …………………………………………………… Hood 29 …… ……………………………………………… Notch 30 …………………………………………………… Disinfector body 31 ……………… ………………………………………… Rise section 32 …………………………………………………… Hood 33 …………………………… ……………………… Disinfection room 40 …………………………………………………… Liquid atomizer 41 ……………………………………… …………… Storage container 42 …………………………………………………… Main body 43 …………………………………………………… Spraying time adjustment knob 44 ………………………………………………………… Sensor 50 …………………………………… ........................ stopper

Claims (8)

[Claims] 1. An air passage for supplying air of a predetermined pressure supplied from the outside, a liquid passage for supplying a liquid supplied from the outside adjacent to the air passage, and a nozzle communicating with the air passage. The tubular body comprises a nozzle body having an insertion portion to be worn, a tubular body forming an introduction path for introducing air, and a flange provided on an outer peripheral surface of the tubular body and having an appropriate number of holes formed therein. A nozzle which is removably inserted into the insertion portion so that the introduction path of the nozzle communicates with the air passage of the nozzle body,
The tip of the nozzle is closely fitted to the flange of the nozzle and is detachably fitted to the nozzle body so that the air jetted from the tip of the nozzle can flow from the liquid passage of the nozzle body through the flange of the nozzle. A spray nozzle configured by a diffuser that mixes with a liquid supplied to the sprayer and sprays the spreader. 2. An air passage, the tip of which is made of a tubular body, and which supplies air of a predetermined pressure supplied from the outside from a substantially central portion of the tubular body, and a wall surface of the tubular body which is adjacent to the air passage. A nozzle body having a liquid passage formed inside for conveying a liquid supplied from the outside, a nozzle body including an insertion portion for communicating with the air passage and inserting a nozzle, and a cylinder forming an introduction passage for introducing air. A body and a flange provided on the outer peripheral surface of the cylindrical body and having an appropriate number of holes formed therein, and an elastic packing is attached to the insertion portion so that the introduction path of the cylindrical body communicates with the air passage of the nozzle body. A nozzle that is removably inserted through the nozzle, and air that is closely fitted to the flange of the nozzle and is removably fitted to the nozzle body and that is ejected from the tip of the nozzle from the liquid passage of the nozzle body. The tip of the nozzle through the flange of the nozzle A spray nozzle configured by a diffuser that mixes with a liquid supplied to an end and sprays with a spread. 3. An air passage, the tip of which is made of a tubular body, for feeding air of a predetermined pressure supplied from the outside from a substantially central portion of the tubular body, and a wall surface of the tubular body adjacent to the air passage. A nozzle body having a liquid passage formed inside for conveying a liquid supplied from the outside, a nozzle body including an insertion portion for communicating with the air passage and inserting a nozzle, and a cylinder forming an introduction passage for introducing air. The body and a flange formed on the outer peripheral surface of the cylindrical body and having an appropriate number of holes and a tapered outer peripheral end surface having a smaller diameter toward the center of the tip end, and the introduction path of the cylindrical body of the nozzle main body. A nozzle that is removably inserted into the insertion portion via an elastic packing so as to communicate with the air passage, and an inner surface is formed with the same taper as that formed on the outer peripheral end surface of the nozzle flange. , When tightly fitted to the nozzle flange Both of them are removably fitted to the nozzle body and mixed with the liquid supplied from the liquid passage of the nozzle body to the nozzle tip through the flange of the nozzle into the air jetted from the nozzle tip to spread. A spray nozzle that is configured by a diffuser that holds and sprays. 4. The air passage for supplying air of a predetermined pressure supplied from the outside from a substantially central portion of the tubular body, and a wall surface of the tubular body adjacent to the air passage. A nozzle body having a liquid passage formed inside for conveying a liquid supplied from the outside, a nozzle body including an insertion portion for communicating with the air passage and inserting a nozzle, and a cylinder forming an introduction passage for introducing air. The body and a flange formed on the outer peripheral surface of the cylindrical body and having an appropriate number of holes and a tapered outer peripheral end surface having a smaller diameter toward the center of the tip end, and the introduction path of the cylindrical body of the nozzle main body. A nozzle that is removably inserted into the insertion portion via an elastic packing so as to communicate with the air passage, and an inner surface is formed with the same taper as that formed on the outer peripheral end surface of the nozzle flange. , Communicating with the hole in the flange of the nozzle, A negative pressure chamber that mixes air and liquid jetted at a predetermined pressure from the tip of the nozzle is provided between the tip of the nozzle and communicates with the negative pressure chamber, and its central axis coincides with the central axis of the nozzle. An injection passage for regulating and guiding the air mixed with the liquid in the negative pressure chamber to a predetermined amount is provided, and the injection passage is closely fitted to the flange of the nozzle and detachably fitted to the nozzle body. The air jetted from the tip is mixed with the liquid supplied from the liquid passage of the nozzle body to the tip of the nozzle through the flange of the nozzle to have a certain funnel-shaped spread from the jet port of the tip of the jet passage. A spray nozzle that is configured by a diffuser that sprays a liquid. 5. An air passage for supplying air from a substantially central portion of the tubular body, the tip of which is a tubular body, and air supplied from outside, and a wall surface of the tubular body adjacent to the air passage. A nozzle body having a liquid passage formed inside for conveying a liquid supplied from the outside, a nozzle body including an insertion portion for communicating with the air passage and inserting a nozzle, and a cylinder forming an introduction passage for introducing air. The body and a flange formed on the outer peripheral surface of the cylindrical body and having an appropriate number of holes and a tapered outer peripheral end surface having a smaller diameter toward the center of the tip end, and the introduction path of the cylindrical body of the nozzle main body. A nozzle that is removably inserted into the insertion portion via an elastic packing so as to communicate with the air passage, and an inner surface is formed with the same taper as that formed on the outer peripheral end surface of the nozzle flange. , Communicating with the hole in the flange of the nozzle, A negative pressure chamber that mixes air and liquid jetted at a predetermined pressure from the tip of the nozzle is provided between the tip of the nozzle and communicates with the negative pressure chamber, and its central axis coincides with the central axis of the nozzle. An injection passage for guiding and regulating the air mixed with the liquid in the negative pressure chamber to a predetermined amount is provided, and a hood having notches at appropriate points is provided at the tip end, and the hood is tightly fitted to the flange of the nozzle. The air jetted from the tip of the nozzle is removably fitted into the nozzle body and mixed with the liquid supplied from the liquid passage of the nozzle body to the tip of the nozzle through the flange of the nozzle. A spray nozzle comprising: a diffuser for spraying a liquid with a certain funnel-shaped spread from an injection port at the tip of the injection passage. 6. The air passage for supplying air of a predetermined pressure supplied from the outside from a substantially central portion of the tubular body, and a wall surface of the tubular body adjacent to the air passage. A nozzle body having a liquid passage formed inside for conveying a liquid supplied from the outside, a nozzle body including an insertion portion for communicating with the air passage and inserting a nozzle, and a cylinder forming an introduction passage for introducing air. The body and a flange formed on the outer peripheral surface of the cylindrical body and having an appropriate number of holes and a tapered outer peripheral end surface having a smaller diameter toward the center of the tip end, and the introduction path of the cylindrical body of the nozzle main body. A nozzle that is removably inserted into the insertion portion via an elastic packing so as to communicate with the air passage, and an inner surface is formed with the same taper as that formed on the outer peripheral end surface of the nozzle flange. , Communicating with the hole in the flange of the nozzle, A negative pressure chamber that mixes air and liquid jetted at a predetermined pressure from the tip of the nozzle is provided between the tip of the nozzle and communicates with the negative pressure chamber, and its central axis coincides with the central axis of the nozzle. An injection passage for guiding the air mixed with the liquid in the negative pressure chamber by regulating it to a predetermined amount is provided, and a hood with notches formed at appropriate points is provided at the tip end, in the vicinity of the injection port at the tip of the injection passage. A protection rod is provided upright to fit tightly to the flange of the nozzle and is removably fitted to the nozzle main body, and the air jetted from the tip of the nozzle is supplied to the air from the liquid passage of the nozzle main body. And a diffuser that mixes with the liquid supplied to the tip of the nozzle through the flange of the nozzle and sprays the liquid with a certain spread in a funnel shape from the injection port at the tip of the injection passage. And a spray nozzle. 7. The fitting of the diffuser to the nozzle body is performed by forming a male screw on the outer peripheral surface of the lead-out cylinder of the nozzle body,
The spray nozzle according to claim 1, wherein a female screw is formed on the inner surface of the diffuser, and the diffuser is screwed onto the nozzle body. 8. The liquid supplied from the liquid passage of the nozzle main body to the tip of the nozzle through the flange of the nozzle is jetted together with air by the jetting of pressurized air, which is generated at this time. 8. The spray nozzle according to claim 1, which is pumped up by a negative pressure that is applied.