Electrostatic dispersal head

Abstract

To provide a charging / spraying head configured so that a cable connection part of an induction electrode part can be attached and fixed to a main body part, without influencing an arrangement position of a liquid particle charging part of the induction electrode part.SOLUTION: A charging / spraying head 10 is provided with: a main body part 12 having a nozzle part that discharges liquid particles to be sprayed; and an induction electrode part 24 that has a ring part 2430 that charges the liquid particles discharged from the nozzle part and a cable connection part which is pulled out from the ring part 2430 and which a voltage application cable 44 for applying predetermined voltages is connected to when the ring part 2430 charges the liquid particles, which is further provided with a cable connection part mounting structure 45 whose position can be adjusted in a predetermined direction in accordance with a position of the cable connection part of the induction electrode part 24 and which attaches and fixes the cable connection part of the induction electrode part 24 to the main body part 12.SELECTED DRAWING: Figure 5

Description

Technical Field

[0005] ,

[0004] , ,

[0001] The present invention relates to a charged spraying head for charging and spraying liquid particles.

Background Art

[0002] Conventionally, in a charged spraying head for charging and spraying fine particles of water as a liquid, charged liquid particles with an average particle diameter of 10 to 300 μm can be sprayed, and it is provided in a fire extinguishing facility such as a building that becomes a spraying target section. By electrically adsorbing the charged liquid particles sprayed with the smoke generated by a fire, the smoke can be eliminated, and by electrically adhering the charged liquid particles to the fire extinguishing target object, it is possible to improve the fire extinguishing efficiency. Also, by electrically adsorbing the dust floating in the air at the building demolition site or the like to the charged liquid particles, it is possible to remove the dust from the air.

[0003] FIG. 15 shows a conventional charged spraying head, and FIG. 16 shows a cross-sectional view of a conventional charged spray head. As shown in FIGS. 15 and 16, the charged spraying head 100 is composed of a main body portion 120, a water-side electrode portion 140, an electrode connection portion 160, a liquid conduit portion 180, a main body cover portion 200, a nozzle portion 220, an induction electrode portion 240, and an arm portion 260.

[0004] Here, in the description of FIGS. 15 and 16, the X - Y - Z directions are directions orthogonal to each other. Specifically, the Y-axis direction is the water flow direction passing through the charged spraying head 100 and the up - down direction, the X direction is the left - right direction, and the Z direction is the front - back direction. Also, the +X side in the X direction is the right side, the -X side is the left side, the +Y side in the Y direction is the upper side, the -Y side is the lower side, the +Z side in the Z direction is the front side, and the -Z side is the rear side.

[0005] Furthermore, the Y-axis direction, which is vertical, represents the direction of water flow through the head. Therefore, the upper +Y side is sometimes called the inflow side, and the lower -Y side is sometimes called the outflow side. This is also true for the XYZ directions in Figures 1 to 14, which represent embodiments of the present invention. Note that the XYZ directions are relative directions that change depending on the mounting state of the charged spraying head 100 in the spraying target area.

[0006] The main body 120, liquid conduit 180, main body cover 200, nozzle 220, and arm 260 are insulators made of an insulating material such as polyvinyl chloride resin. The water-side electrode 140 and electrode connecting part 160 are conductors made of a conductive material such as metal.

[0007] An electrode mounting hole 121 is formed through the main body 120 in the direction of the head axis 350 (up and down direction). The water side electrode part 140 is fitted into the electrode mounting hole 121 from the outflow side. The liquid conduit part 180 is fitted to the main body 120 from the inflow side via a terminal chamber 124 formed on the inflow side of the main body 120. The electrode connecting part 160 is screwed into the water side electrode part 140 through the liquid conduit part 180, thereby attaching and fixing the water side electrode part 140 to the electrode mounting hole 121 and connecting and fixing the liquid conduit part 180 to the water side electrode part 140.

[0008] Multiple screw holes 164 are provided in the electrode connection section 160, allowing the terminals of an earth cable inserted via a waterproof connector to be connected through electrode connector mounting holes 127 formed in the lateral direction (perpendicular to the vertical direction, to the right in Figure 16) of the terminal chamber 124. The upper part of the liquid conduit section 180 is brought out to the outside via the main body cover section 200, and water is supplied from an external water supply pump or the like.

[0009] A nozzle portion 220 is provided at the outlet end of the water-side electrode portion 140, which is arranged along the head axis 350 direction (vertical direction) of the main body portion 102, and water particles with an average particle diameter of 10 to 300 μm are released from the nozzle portion 220. In the open space on the outlet side of the nozzle portion 220, the ring portion 243 (liquid particle charging portion) of the induction electrode portion 240 is held by the arm portion 260, and the water particles released from the nozzle portion 220 are charged. The induction electrode portion 240 is formed by covering a conductive electrode core material 241 with an insulating coating 242.

[0010] Furthermore, as shown in Figure 15, an electrode lead-out portion 244 is formed so as to extend upward after being taken out laterally (in a direction perpendicular to the vertical direction, to the left in Figure 15) from a predetermined position on the ring portion 243 of the induction electrode portion 240, and a cable connection portion 245 connected to the electrode core material 241 inside the ring is pulled out from the tip of the electrode lead-out portion 244. [Prior art documents] [Patent Documents]

[0011] [Patent Document 1] Japanese Patent Publication No. 2009-106405 [Patent Document 2] Japanese Patent Publication No. 2018-183712 [Overview of the Initiative] [Problems that the invention aims to solve]

[0012] Incidentally, in the conventional electrostatic spraying head 100, the induction electrode section 240 is held in a centered state by an electrode holding structure including the arm section 260, such that the central axis of the ring section 243 coincides with the head axis 350 that passes through the discharge axis of the nozzle section 220. This makes it possible to uniformly charge water particles as they pass through the center of the ring section 243 after being discharged from the nozzle section 220.

[0013] Furthermore, in order to charge the water particles passing through the center of the ring portion 243 of the induction electrode portion 240, a predetermined voltage is applied between the water-side electrode portion 140 and the induction electrode portion 240. Therefore, an earth cable is inserted through the electrode connector mounting hole 127 via a waterproof connector and connected to the electrode connecting portion 160 which is connected to the water-side electrode portion 140. At the same time, a voltage application cable is connected via a waterproof connector to the cable connection portion 245 at the tip of the electrode lead-out portion 244 that is taken out from the ring portion 220.

[0014] However, when a voltage application cable is connected by connecting a waterproof connector to the cable connection part 245, the load and stress of the waterproof connector and voltage application cable are applied to the ring part 243, causing the ring part 243, which is held in place by the electrode holding structure, to move and negatively affecting the centering of the ring part 243 so that its central axis is aligned with the head shaft 350. Therefore, a cable connection part mounting structure is required that attaches and fixes the cable connection part 245, to which the waterproof connector is connected, to the main body part 120 so that the load and stress of the waterproof connector and voltage application cable are not applied to the ring part 243.

[0015] While it is feasible to add such a cable connection mounting structure to the electrostatic spraying head, considering the dimensional variations of the induction electrode section 240 and the cable connection mounting structure, as well as the assembly variations of the electrostatic spraying head, measures must be taken to prevent loads or deformation stresses from being applied to the induction electrode section 240 by the mounting and fixing of the cable connection mounting structure. This remains an issue that needs to be resolved.

[0016] The present invention aims to provide a charged spraying head that allows the cable connection portion of the induction electrode to be attached and fixed to the main body without affecting the arrangement position of the liquid particle charging portion of the induction electrode. [Means for solving the problem]

[0017] (Electrostatic dispersal head 1) The present invention relates to an electrostatic spraying head for spraying charged liquid particles onto a target area, at least, A main body having a nozzle portion for discharging liquid particles to spray charged liquid particles, a liquid particle charging portion for charging the liquid particles discharged from the nozzle portion, and a cable connection portion to which a power cable for applying a predetermined voltage when charging the liquid particles by the liquid particle charging portion is connected, and an induction electrode portion having the same; Comprising It is characterized in that a cable connection portion mounting structure is provided which is position-adjustable in a predetermined direction corresponding to the position of the cable connection portion of the induction electrode portion and attaches and fixes the cable connection portion of the induction electrode portion to the main body portion.

[0018] (Charged spraying head 2) The present invention is a charged spraying head for spraying charged water particles onto a spraying target area, At least A main body having a nozzle portion for discharging liquid particles for spraying in order to spray charged liquid particles, An induction electrode portion to which a predetermined voltage is applied to charge the liquid particles discharged from the nozzle portion, Comprising The induction electrode portion Is arranged such that the discharge axis of the liquid particles from the nozzle portion becomes the center of the opening, and a ring portion for charging the passed liquid particles, An electrode lead-out portion drawn from the ring portion, A cable connection portion formed on the electrode lead-out portion to which a power cable for applying a predetermined voltage by connecting a predetermined connector is connected, Comprising It is characterized in that a cable connection portion mounting structure is provided which is position-adjustable in a predetermined direction corresponding to the position of the cable connection portion of the induction electrode portion and attaches and fixes the cable connection portion to which the predetermined connector is connected to the main body portion.

[0019] (Position adjustment direction of cable connection portion mounting structure) The cable connection portion mounting structure is position-adjustable in each of the three-dimensional directions.

[0020] (Cable connection portion mounting structure) The cable connection part mounting structure is a main body fixing part that is mounted and fixed at a predetermined position of the main body, a first moving part that is position-adjustable in a first direction which can be any of the three-dimensional directions with respect to the main body fixing part and is mounted and fixed to the main body fixing part, a second moving part that is position-adjustable in any of the three-dimensional directions and in a second direction different from the first direction with respect to the first moving part and is mounted and fixed to the first moving part, a third moving part that is position-adjustable in any of the three-dimensional directions and in a third direction different from the first direction and the second direction with respect to the second moving part, and is mounted and fixed to the second moving part and to which the cable connection part is mounted and fixed, and includes.

[0021] (Cable connection part mounting structure made of a plate member) The main body fixing part, the first moving part, the second moving part, and the third moving part are plate members, The second moving part has a first bent surface part that is mounted and fixed to the first moving part and extends in the second direction, and a second bent surface part that is mounted and fixed to the third moving part and extends in the third direction.

[0022] (Structure that can be position-adjusted in any of the three-dimensional directions) As a structure that can be position-adjusted in any of the first to third directions with respect to the plate member to which it is mounted and fixed, a through hole formed in one plate member, a long hole formed in the other plate member in the direction where position adjustment is possible, a fastening part inserted through the through hole and the long hole, a fastening receiving part to which the fastening part is fastened, and includes.

Effect of the invention

[0023] (Effect by the charging and spraying head 1) The present invention relates to a charged spraying head for spraying charged liquid particles onto a target area, comprising at least a main body having a nozzle for discharging liquid particles to spray charged liquid particles, a liquid particle charging unit for charging the liquid particles discharged from the nozzle, and an induction electrode unit having a cable connection unit that is drawn out from the liquid particle charging unit and to which a power cable for applying a predetermined voltage when charging liquid particles by the liquid particle charging unit is connected, and the induction electrode unit is position-adjustable in a predetermined direction corresponding to the position of the cable connection unit, and a cable connection unit mounting structure is provided for attaching and fixing the cable connection unit of the induction electrode unit to the main body, so that the load and stress on the cable side connected to the cable connection unit of the induction electrode unit are suppressed and prevented from being applied to the liquid particle charging unit of the induction electrode unit, and the position of the liquid particle charging unit of the induction electrode unit does not shift, making it possible to perform uniform and stable charging on liquid particles passing through the liquid particle charging unit of the induction electrode unit.

[0024] Furthermore, since the cable connection mounting structure can be adjusted in a predetermined direction to correspond to the position of the cable connection part of the induction electrode, even if there are dimensional variations in the cable connection mounting structure or the induction electrode, or assembly variations in the charged dispersion head, the position can be adjusted to match the dimensional and assembly variations, thereby suppressing and preventing the load and deformation stress applied to the induction electrode side by the mounting and fixing of the cable connection mounting structure. From this point of view as well, the position of the liquid particle charging part of the induction electrode does not shift, and it becomes possible to perform uniform and stable charging on liquid particles passing through the liquid particle charging part of the induction electrode.

[0025] Furthermore, the same effect as the electrostatic dispersal head 1 occurs with the electrostatic dispersal head 2.

[0026] (Effect of the cable connection mounting structure) Furthermore, the cable connection mounting structure is adjustable in each of the three dimensions and comprises a main body fixing part that is attached and fixed to a predetermined position on the main body, a first movable part that is adjustable in a first direction which is any of the three dimensions relative to the main body fixing part and is attached and fixed to the main body fixing part, a second movable part that is adjustable in a second direction which is any of the three dimensions relative to the first movable part and is different from the first direction and is attached and fixed to the first movable part, and a third movable part that is adjustable in a third direction which is any of the three dimensions relative to the second movable part and is different from the first and second directions and is attached and fixed to the second movable part, and the cable connection part is attached and fixed to it. As such, the position of each of the first to third directions can be adjusted individually, and the position of the cable connection mounting structure can be easily adjusted.

[0027] (Effects of a cable connection mounting structure using a plate member and a structure that allows for position adjustment) Furthermore, the main body fixing part, the first movable part, the second movable part, and the third movable part are plate members, and the second movable part has a first bent surface part that is attached and fixed to the first movable part and extends in the second direction, and a second bent surface part that is attached and fixed to the third movable part and extends in the third direction, and the structure is such that the position can be adjusted in any of the first to third directions with respect to the plate member to which it is attached and fixed, and is provided with a through hole formed in one plate member, an elongated hole formed in the other plate member in a direction that allows for position adjustment, a fastening part that is inserted through the through hole and the elongated hole, and a fastening receiving part that fastens the fastening part, thus making it possible to realize a cable connection mounting structure that can be adjusted in position with a simple structure of plate members and fastening parts. [Brief explanation of the drawing]

[0028] [Figure 1] This is an explanatory diagram showing the front view of the electrostatic dispersal head. [Figure 2] This is an explanatory diagram showing the top and bottom surfaces of the electrostatic dispersal head. [Figure 3] This is a perspective view of the electrostatic spraying head as seen from the outflow side. [Figure 4] This is an explanatory diagram showing the internal structure of the electrostatic dispersal head in cross-section. [Figure 5] This is an explanatory diagram showing the front view of a static discharge head equipped with a cable connection mounting structure. [Figure 6] This is an explanatory diagram showing a plan view of a static charge spraying head equipped with a cable connection mounting structure. [Figure 7] This is an explanatory diagram showing the side view of a static discharge head equipped with a cable connection mounting structure. [Figure 8] This is a perspective view showing the main unit mounting plate removed. [Figure 9] This is an explanatory diagram showing the first movable plate removed. [Figure 10] This is an explanatory diagram showing the second movable plate removed. [Figure 11] This is an explanatory diagram showing the third movable plate removed. [Figure 12] This is an explanatory diagram showing the cable connection mounting structure. [Figure 13] This is an explanatory diagram showing the cable connection mounting structure. [Figure 14] This is an explanatory diagram showing the third movable plate portion for attaching and securing the waterproof connector. [Figure 15] This is an explanatory diagram showing a conventional electrostatic dispersal head. [Figure 16] This is a cross-sectional view showing the internal structure of a conventional electrostatic dispersal head. [Modes for carrying out the invention]

[0029] The following describes in detail an embodiment of the electrostatic dispersion head according to the present invention with reference to the drawings. However, the present invention is not limited to the following embodiments.

[0030] [Basic Concepts of the Embodiment] First, the basic concept of the embodiment will be explained. The embodiment generally relates to a charged spraying head that sprays charged liquid particles onto a target area.

[0031] Here, "charged spraying head" refers to a device that sprays charged water particles onto a target area. The configuration of the charged spraying head according to the present invention includes at least: a main body having a nozzle that releases liquid particles for spraying charged liquid particles; a liquid particle charging unit that charges the liquid particles released from the nozzle; an induction electrode unit having a cable connection unit that extends from the liquid particle charging unit and to which a power cable for applying a predetermined voltage when the liquid particles are charged by the liquid particle charging unit is connected; and a cable connection unit mounting structure that can be positioned in a predetermined direction corresponding to the position of the cable connection unit of the induction electrode unit and attaches and fixes the cable connection unit of the induction electrode unit to the main body.

[0032] Furthermore, "charged liquid particles" refer to liquid particles that have been charged and sprayed from a charged spraying head. These are liquid particles that have been charged by an inductive charging method, for example, by applying a predetermined high voltage from a high-voltage power supply device as a power source between an inductive electrode section, which is one electrode, and the water-side electrode section of the charged spraying head, which is the other electrode, and adjusting the potential of the inductive electrode section relative to the water-side electrode section so that the liquid particles pass through the high electric field generated in the liquid particle charging section of the inductive electrode section. The liquid being sprayed is any liquid that has a smoke-reducing effect, a fire-extinguishing effect, a dust-removing effect, etc., and includes, for example, water supplied under pressure by an external water pump.

[0033] Furthermore, in order to apply a predetermined voltage between the induction electrode section and the water-side electrode section, power cables are connected to both sections. The power cable connected to the cable connection section of the induction electrode section is sometimes called the "voltage application cable," and the power cable connected to the water-side electrode section is sometimes called the "ground cable."

[0034] Furthermore, as a specific embodiment of the "inductive electrode section," the liquid particle charging section may be arranged such that the emission axis of liquid particles from the nozzle section of the main body is at the center of the opening, and the passing liquid particles may be charged in the form of a ring section, with the cable connection section formed in the electrode lead-out section that extends from the ring section.

[0035] Furthermore, the "cable connection mounting structure" is a structure for attaching and fixing the cable connection to the main body so that the load and stress of a predetermined connector or power cable connected to the cable connection does not apply to the liquid particle charging part (ring part) of the induction electrode. Moreover, since the cable connection mounting structure can be adjusted in a predetermined direction to correspond to the position of the cable connection on the induction electrode, even if there are dimensional variations in the cable connection mounting structure or the induction electrode, or assembly variations in the charged dispersion head, the position can be adjusted to match these variations, thereby suppressing and preventing the load and deformation stress applied to the induction electrode side when it is attached and fixed by the cable connection mounting structure.

[0036] Furthermore, the "predetermined direction" in adjusting the position of the cable connection mounting structure refers to any direction that takes into account dimensional variations in the cable connection mounting structure and induction electrode parts, as well as assembly variations in the charge dispersion head, etc., and includes, for example, each of the three dimensions. "Each of the three dimensions" refers to a direction in which each of the three dimensions is orthogonal to the other two directions, when each direction is designated as the "first direction," "second direction," and "third direction."

[0037] Furthermore, as a specific embodiment of the cable connection mounting structure when the cable connection mounting structure is adjustable in each of the three dimensions, it comprises: a main body fixing part that is fixed to a predetermined position on the main body; a first movable part that is adjustable in a first direction which is any of the three dimensions relative to the main body fixing part and is fixed to the main body fixing part; a second movable part that is adjustable in a second direction which is any of the three dimensions relative to the first movable part and is different from the first direction, and is fixed to the first movable part; and a third movable part that is adjustable in a third direction which is any of the three dimensions relative to the second movable part and is different from the first and second directions, and is fixed to the second movable part and to which the cable connection part is fixed.

[0038] Furthermore, the "main body fixing part," "first movable part," "second movable part," and "third movable part" of the cable connection mounting structure may be plate members. In the case of plate members, the "second movable part" has a first bent surface portion that is attached and fixed to the first movable part and extends in the second direction, and a second bent surface portion that is attached and fixed to the third movable part and extends in the third direction.

[0039] Furthermore, when used as plate components, the "main body fixing part," "first movable part," "second movable part," and "third movable part" may be referred to as the "main body fixing plate," "first movable plate," "second movable plate," and "third movable plate."

[0040] Furthermore, the structure for adjusting the position of the first to third movable parts in any of the first to third directions relative to the plate member to which it is attached and fixed is arbitrary, but for example, it shall include a through hole formed in one plate member, an elongated hole formed in the other plate member in a direction that allows for position adjustment, a fastening part inserted through the through hole and the elongated hole, and a fastening receiving part to which the fastening part is fastened.

[0041] Here, taking as an example a first movable part and a second movable part that can be positioned in a second direction relative to the first movable part, a through hole is provided in either the first or second movable part, and an elongated hole formed in the second direction is provided in the movable part that does not have a through hole. Furthermore, the structure of the fastening part and the fastening receiving part is arbitrary, but for example, the fastening part may be a "screw" and the fastening receiving part may be a "nut" such as a wing nut or a "screw hole" formed in the through hole.

[0042] In the embodiments described below, the "induction electrode section" comprises a "ring section, an electrode lead-out section, and a cable connection section," the "cable connection section mounting structure" comprises a "main body fixing plate, a first movable plate, a second movable plate, and a third movable plate," the "position-adjustable direction of the cable connection section mounting structure" is "each of the three-dimensional directions that are the first, second, and third directions," the "first direction" is the "up and down direction," the "second direction" is the "front and back direction," the "third direction" is the "left and right direction," the "fastening part of the position-adjustable structure" is a "screw," the "fastening receiving part of the position-adjustable structure" is a "screw hole or wing nut," and the "charged liquid particles to be scattered" are "charged water particles."

[0043] [Specific details of the embodiment] The specific details of the embodiment will be explained as follows: a. Structure of the electrostatic dispersal head b. Cable connection mounting structure c. Components of the cable connection mounting structure c1.Body fixing plate c2. 1st moving plate c3.Second moving plate c4. 3rd moving plate d. Adjustment of the position of the cable connection mounting structure e. Modifications of the present invention

[0044] [a. Structure of the electrostatic dispersal head] First, the structure of the electrostatic spraying head before the cable connection mounting structure is installed will be described. In this description, refer to Figure 1, which shows the front view of the electrostatic spraying head; Figure 2, which shows the top and bottom views of the electrostatic spraying head; Figure 3, which is a perspective view of the electrostatic spraying head as seen from the outlet side; and Figure 4, which shows a cross-section of the internal structure of the electrostatic spraying head. Note that Figure 2(A) shows the top view, Figure 2(B) shows the bottom view, and Figure 4 shows the cross-section of the cutting line aa in Figure 2(A). Also, Figures 1 and 4 are shown with the earth cable connected.

[0045] As shown in Figures 1 to 4, the electrostatic spraying head 10 of this embodiment is composed of a main body 12, a water-side electrode 14, an electrode connecting part 16, a liquid conduit 18, a main body cover 20, a nozzle 22, an induction electrode 24, and an arm 26.

[0046] The main body 12, liquid conduit 18, main body cover 20, nozzle 22, and arm 26 are insulators manufactured from insulating materials. Examples of insulating materials include polyvinyl chloride resin, polyphenylene sulfide resin, urethane resin, polytetrafluoroethylene resin, polychlorotrifluoroethylene resin, ceramics (alumina ceramics), and glass enamel.

[0047] The water-side electrode portion 14 and the electrode connecting portion 16 are conductors made of a conductive material. As the conductive material, metal is used, but conductive resins, fiber bundles, rubber, etc. other than metal may also be used, or composites of these may be used.

[0048] As shown in the cross-section of Figure 4, an electrode mounting hole 1210 is formed through the main body 12 in the direction of the head axis 35 (up and down direction), which is the direction of water flow. The water-side electrode portion 14 is inserted into the electrode mounting hole 1210 from the outflow side (bottom side). A liquid conduit portion 18 is positioned in a terminal chamber 1240 formed on the inflow side (top side) of the electrode mounting hole 1210. An electrode connecting portion 16, inserted through the liquid conduit portion 18, is screwed onto the upper end of the water-side electrode portion 14 that is exposed from the electrode mounting hole 1210 into the terminal chamber 1240. This secures the water-side electrode portion 14 to the electrode mounting hole 1210 and connects and secures the outflow side of the liquid conduit portion 18 to the inflow side of the water-side electrode portion 14.

[0049] Multiple screw holes 1640 are formed in the electrode connecting portion 16, and the terminal 38 of the earth cable 34, which is inserted via a waterproof cable connector 36 that is attached to an electrode connector mounting hole 1270 formed laterally (perpendicular to the vertical direction, to the right in Figure 4) relative to the terminal chamber 1240 of the main body portion 12, is fixed and connected to one of the screw holes 1640 by a screw 40.

[0050] The liquid conduit section 18 is exposed to the outside through a main body cover section 20 provided at the inlet opening of the terminal chamber 1240, and pressurized water is supplied to it by an external water supply pump or the like. The pressure of the water supplied to the liquid conduit section 18 is adjusted, for example, within the range of 0.1 to 1.0 MPa.

[0051] A nozzle section 22 is attached to the outlet side (lower end side) of the water-side electrode section 14, which is mounted along the head axis 35 direction of the main body section 12. As shown in Figure 3, the nozzle section 22 has nozzle holes 2210 formed therein and releases water particles with a predetermined average particle diameter, for example, an average particle diameter of 10 to 300 μm.

[0052] In the open space on the outflow side of the nozzle section 22, an induction electrode section 24 is arranged using three arm sections 26, for example, as shown in Figure 3. The induction electrode section 24 is, for example, ring-shaped, and as shown in the cross-section in Figure 4, it is formed by covering a conductive electrode core material 2410 with an insulating coating 2420. An electrode lead-out section 2440 is formed to extend upward after being taken out laterally (in a direction perpendicular to the vertical direction, to the left in Figure 1) from a predetermined position in the ring section 2430. At the tip of the electrode lead-out section 2440, a cable connection section 2450 connected to the electrode core material 2410 inside the ring is exposed, and a voltage application cable is connected to the cable connection section 2450.

[0053] The electrode core material 2410 of the induction electrode section 24 is a conductor made of a conductive material. As the conductive material, metal is used, but conductive resins, fiber bundles, rubber, etc. other than metal may also be used, or a composite material combining these materials may be used.

[0054] Furthermore, the insulating material for the insulating coating 2420 in the induction electrode section 24 is, for example, polyvinyl chloride resin, polyphenylene sulfide resin, urethane resin, polytetrafluoroethylene resin, polychlorotrifluoroethylene resin, ceramics (alumina ceramics), glass enamel, etc., and the electrode core material 2410 is insulated by coating (covering) it with, for example, soft polyvinyl chloride (flexible polyvinyl chloride). At this time, the electrode core material 2410 is coated a predetermined number of times so that no pinholes remain in the coating. Also, if the coating thickness is too large, there is a possibility that the outer water particles of the water particle flux released from the nozzle section 22 will hit the inner side of the ring section 2430 of the induction electrode section 24. This can lead to problems such as a decrease in the charging efficiency of water particles in the induction electrode section 24, a decrease in the amount of charged water particles dispersed after passing through the induction electrode section 24, and adverse effects on directivity, so the coating thickness is adjusted so that it does not become too large. The number of times the coating is applied is arbitrary, and in this embodiment, the electrode core material 2410 is covered by applying a coating twice using soft polyvinyl chloride.

[0055] As shown in the cross-section of Figure 4, the ring portion 2430 of the induction electrode portion 24 is held in a predetermined position in the open space on the outflow side of the nozzle portion 22 by three arm portions 26, a fixing portion 28, and a fixing plate portion 30 that constitute the electrode holding structure 25. The pivot portion 2610 on the outer upper end of the arm portion 26 abuts against the outer corner of the groove portion 1280 of the main body portion 12, while the pressing portion 2620 on the inner upper end of the arm portion 26 is floating above the groove portion 1280.

[0056] When the fixing part 28 is rotated and screwed into the groove part 1280 side (upper side), the fixing plate part 30 is pressed upward, and the pressing part 2620 of the arm part 26 is pressed toward the groove part 1280. As a result, the arm part 26 rotates around the pivot point part 2610, and the holding part 2630 tilts inward. Then, due to the tilting of the three arm parts 26, the ring part 2430 of the induction electrode part 24 is pressed at three points by the holding part 2630 of the arm part 26, and the induction electrode part 24 is held in a state in which the central axis of the ring part 2430 is centered on the head axis 35.

[0057] The terminal of the earth cable is connected to one of the screw holes 1640 of the electrode connection part 16, and the voltage application cable is connected to the cable connection part 2450 of the induction electrode part 24. A predetermined voltage in the range of +0.5kV to +20kV or -0.5kV to -20kV is applied between the water side electrode part 14 and the induction electrode part 24 as a DC voltage, AC voltage, pulse voltage, etc., as a predetermined adjustment range within the voltage range in which water particles can be charged. A predetermined external electric field is formed around the ring part 2430 of the induction electrode part 24, and water particles emitted from the nozzle part 22 and passing through the ring part 2430 of the induction electrode part 24 are charged and dispersed.

[0058] For example, when a DC voltage is applied between the water-side electrode 14 and the induction electrode 24, if the polarity of the induction electrode 24 is positive when the water-side electrode 14 is set to a reference potential (earth potential, 0V), negatively charged water particles will be generated. If the polarity of the induction electrode 24 is negative when the water-side electrode 14 is set to a reference potential (earth potential, 0V), positively charged water particles will be generated. Furthermore, if the voltage applied between the water-side electrode 14 and the induction electrode 24 is in the range of +0.5kV to +20kV or -0.5kV to -20kV, the generation of spark discharge is prevented, and charged water particles are generated while ensuring safety.

[0059] When using the electrostatic spraying head 10 to remove dust from the air, for example at a building demolition site, the electrostatic water particles sprayed from the electrostatic spraying head 10 electrically attract and capture airborne dust particles, causing them to fall and be removed from the air. Furthermore, when the electrostatic spraying head 10 is installed in a fire extinguishing system, the electrostatic water particles sprayed from the electrostatic spraying head 10 electrically attract and capture airborne smoke particles, causing them to fall and providing a smoke extinguishing effect. In addition, the electrostatic water particles electrically attract to the object being extinguished, thereby improving the fire extinguishing performance.

[0060] [b. Cable connection mounting structure] Next, the cable connection mounting structure provided on the electrostatic spraying head will be described. In this description, please refer to Figure 5, which shows the front view of the electrostatic spraying head equipped with the cable connection mounting structure; Figure 6, which shows the top view of the electrostatic spraying head equipped with the cable connection mounting structure; and Figure 7, which shows the side view (viewed from the left side) of the electrostatic spraying head equipped with the cable connection mounting structure.

[0061] First, the cable connection portion, which is attached and fixed by the cable connection mounting structure, will be described. As shown in Figures 5 to 7, the cable connection portion 2450 of the electrostatic spraying head 10 (not shown in Figures 5 to 7 because the waterproof connector 42 is connected) is exposed at the tip of the electrode lead-out portion 2440 that is drawn out from the ring portion 2430 of the induction electrode portion 24, which is held in the open space on the outflow side of the nozzle portion 22 by the arm portion 26, and the voltage application cable 44 is electrically connected via the waterproof connector 42. The structure and type of the waterproof connector 42 are arbitrary, but a known waterproof connector with a highly insulating structure and waterproof structure that can withstand the high voltage applied between the induction electrode portion 24 and the water-side electrode portion 14 is used.

[0062] Next, the cable connection mounting structure will be described. As shown in Figures 5 to 7, the cable connection mounting structure 45 adjusts its position in each of the three dimensions, i.e., the up-down, left-right, and front-back directions, to correspond to the position of the cable connection 2450 to which the waterproof connector 42 to which the voltage application cable 44 is connected, and attaches and fixes the cable connection 2450 to one of the fixed surface portions 1260 of the main body 12. For example, it comprises a main body fixing plate 46, a first movable plate 48, a second movable plate 50, and a third movable plate 52. In this embodiment, the fixed surface portions 1260 are formed in three locations on the left side and front-back sides of the main body 12, and in Figures 5 to 7, the cable connection 2450 is attached and fixed to the left fixed surface portion 1260.

[0063] [c. Components of the cable connection mounting structure] Here, we will describe each of the components of the cable connection mounting structure 45: the main body fixing plate 46, the first movable plate 48, the second movable plate 50, and the third movable plate 52. Note that the vertical, horizontal, and front-to-back directions in Figures 8 to 11 correspond to the directions when the device is installed on the electrostatic dispersing head shown in Figures 5 to 7.

[0064] (c1. Main body fixing plate) First, let's explain the main body fixing plate. For this explanation, please refer to Figure 8, which shows the main body fixing plate removed from the unit. Figure 8(A) shows the top view, and Figure 8(B) shows the front view (the view from the left side in Figures 5 to 7).

[0065] As shown in Figures 5 to 7, the main body fixing plate 46 is a plate member that is attached and fixed to the fixing surface portion 1260 of the main body portion 12 in the cable connection mounting structure 45. As shown in Figure 8, the main body fixing plate 46 has a rectangular main body fixing surface portion 4610 on the rear side when viewed from the front, and a rectangular movable plate fixing surface portion 4620 on the front side that extends above the main body fixing surface portion 4610.

[0066] Four through-holes 4630 are formed in the main body fixing surface portion 4610. The through-holes 4630 are formed to correspond to the four screw holes 1262 provided in the fixing surface portion 1260 of the main body portion 12 shown in Figures 5 to 7. As a result, the main body fixing plate 46 is attached and fixed by screws to the fixing surface portion 1260 located on the electrode lead-out portion 2440 side (left side) of the main body portion 12, as shown in Figures 5 to 7.

[0067] Furthermore, a stopper portion 4650 is bent and formed at the front end of the movable plate fixing surface portion 4620 of the main body fixing plate 46, and a screw hole 4640 is provided on the lower side. The stopper portion 4650 serves to restrict a portion of the rotation of the first movable plate 48, which is positioned on top of the left side of the main body fixing plate 46, and guides it to support vertical movement. The screw hole 4640 is used when adjusting the position of the first movable plate 48 with respect to the main body fixing plate 46 and attaching and fixing it.

[0068] (c2. 1st moving plate) Next, the first movable plate will be described. For this description, please refer to Figure 9, which shows the first movable plate removed from the diagram. Figure 9(A) shows the front view (viewed from the left side in Figures 5 to 7), and Figure 9(B) shows the side view (viewed from the front side in Figures 5 to 7).

[0069] As shown in Figure 9, the first movable plate 48 is positioned on top of the left side of the main body fixing plate 46 shown in Figure 8, and is a plate member whose position can be adjusted to move freely in the vertical direction relative to the main body fixing plate 46. As shown in Figure 9, the first movable plate 48 has a vertically movable surface portion 4830 that extends vertically on the lower side and a front-to-back movable surface portion 4840 that extends in the front-to-back direction on the upper side.

[0070] On the lower side of the vertically movable surface portion 4830, vertically elongated holes 4810 are formed in the vertical direction. When placed on top of the main body fixing plate 46, the vertically elongated holes 4810 face the screw holes 4640 of the main body fixing plate 46. As shown in Figure 7, the first movable plate 48 is attached and fixed to the main body fixing plate 46 at a vertically adjusted position within the range of the vertically elongated holes 4810 by screwing the screws 54 through the vertically elongated holes 4810 into the screw holes 4640 of the main body fixing plate 46. Alternatively, the screw holes 4640 of the main body fixing plate 46 may be made through holes, and the screws 54 may be passed through the vertically elongated holes 4810 and the through holes, with wing nuts screwed onto the screws 54 from the opposite side.

[0071] A front-to-rear elongated hole 4820 is formed on the upper front side of the front-to-rear movable surface portion 4840, and the front-to-rear elongated hole 4820 is used when adjusting the position of the second movable plate 50 relative to the first movable plate 48 and attaching and fixing it.

[0072] (c3. 2nd moving plate) Next, the second movable plate will be explained. For this explanation, please refer to Figure 10, which shows the second movable plate removed from the diagram. Figure 10(A) shows a top view, and Figures 10(B) and 10(C) show side views (in Figures 5 to 7, (B) is a view from the front, and (C) is a view from the left side).

[0073] The second movable plate 50 is positioned on top of the left side of the first movable plate 48 shown in Figure 9, and is a plate member whose position can be adjusted to move freely in the front-rear direction relative to the first movable plate 48. As shown in Figure 10(A), it is a plate member bent at a right angle, with a first bent surface portion 5010 formed on one bent side extending in the front-rear direction, and a second bent surface portion 5020 formed on the other bent side extending in the left-right direction.

[0074] As shown in Figure 10(C), a through-hole 5030 is formed in the first bent surface portion 5010. The through-hole 5030 is formed so as to be in a position opposite to the front and rear elongated hole 4820 when the first bent surface portion 5010 of the second movable plate 50 is placed on top of the front and rear movable surface portion 4840 of the first movable plate 48 as shown in Figure 9. As shown in Figures 5 to 7, the second movable plate 50 is attached and fixed to the first movable plate 48 at a position adjusted in the front and rear direction within the range of the front and rear elongated hole 4820 by passing a screw 56 through the through-hole 5030 of the second movable plate 50 to the front and rear elongated hole 4820 of the first movable plate 48 and screwing a wing nut 58 onto the screw 56 from the right side.

[0075] Furthermore, as shown in Figure 10(B), the second bent surface portion 5020 has left and right elongated holes 5040 formed in the left and right direction, and these left and right elongated holes 5040 are used when adjusting the position of the third movable plate 52 relative to the second movable plate 50 and attaching and fixing it.

[0076] (c4. 3rd moving plate) Finally, the third movable plate will be explained. For this explanation, please refer to Figure 11, which shows the third movable plate removed from the diagram. Figure 11(A) shows the front view (viewed from the front in Figures 5 to 7), and Figure 11(B) shows the side view (viewed from the right side in Figures 5 to 7).

[0077] The third movable plate 52 is positioned on top of the second bent surface portion 5020 of the second movable plate 50 shown in Figure 10, and is a plate member that can be freely adjusted in the left-right direction relative to the second movable plate 50, and to which a cable connection portion including a waterproof connector 42 is attached and fixed.

[0078] As shown in Figure 11, the third movable plate 52 includes a left-right movable surface portion 5230 that extends in the left-right direction and a connector fixing surface portion 5240 that extends downward from the lower side of the left-right movable surface portion 5230.

[0079] Through holes 5210 are formed in the left and right movable surface portion 5230. The through holes 5210 are formed so that when the third movable plate 52 is placed on top of the front surface portion 5020 of the second movable plate 50 shown in Figure 10, they are positioned opposite to the left and right elongated holes 5040. As shown in Figures 5 to 7, the third movable plate 52 is attached and fixed to the second movable plate 50 at a position adjusted in the left and right direction within the range of the left and right elongated holes 5040 by passing a screw 60 through the through hole 5210 of the third movable plate 52 to the left and right elongated holes 5040 of the second movable plate 50 and screwing a wing nut 62 onto the screw 60 from the rear.

[0080] Furthermore, two through holes 5220 are formed in the connector fixing surface portion 5240 of the third movable plate 52. As shown in Figures 5 to 7, the connector fixing portion 64 is attached and fixed to the third movable plate 52 by screws 66 passed through the through holes 5220, and the waterproof connector 42 is attached and fixed to the third movable plate 52 by the connector fixing portion 64.

[0081] [d. Position adjustment of the cable connection mounting structure] Finally, the position adjustment of the cable connection mounting structure will be explained. In this explanation, refer to Figures 12 and 13, which show the cable connection mounting structure separately, and Figure 14, which shows the third movable plate portion for mounting and fixing the waterproof connector separately. Note that Figure 12(A) shows the front view, Figure 12(B) shows the top view, Figure 13(A) shows the left view, Figure 13(B) shows the top view, Figure 14(A) shows the front view, Figure 14(B) shows the left view, and Figure 14(C) shows the cross-section of the cutting line bb in Figure 14(A).

[0082] As shown in Figures 12 and 13, the first movable plate 48 is placed on top of the left side of the main body fixing plate 46, and the screws 54 are passed through the upper and lower elongated holes 4810 of the first movable plate 48 and the main body fixing plate 4 6The first movable plate 48 is attached and fixed to the main body fixing plate 46 by screwing it into the screw hole 4640 (see Figure 8). Therefore, by loosening the screw 54, the first movable plate 48 can be moved vertically relative to the main body fixing plate 46 to adjust its position.

[0083] During this position adjustment, as shown in Figures 12 and 13, the front end of the first movable plate 48 is partially restricted from rotating around the screw 54 by the stopper portion 4650 of the main body fixing plate 46. This supports the vertical movement of the first movable plate 48 relative to the main body fixing plate 46 and prevents the first movable plate 48 from rotating unnecessarily.

[0084] Furthermore, the first bent surface portion 5010 of the second movable plate 50 is superimposed on the upper front side of the left side of the first movable plate 48, and the second movable plate 5 0 With the through-hole 5030 (see Figure 10) of the first bent surface portion 5010 aligned with the front and rear elongated holes 4820 of the first movable plate 50, a screw 56 is passed through the through-hole 5030 and the front and rear elongated holes 4820 from the left side, and a wing nut 58 is screwed onto the screw 56 from the right side. Therefore, by loosening the wing nut 58, the position of the second movable plate 50 can be adjusted by moving it in the front and rear direction relative to the first movable plate 48.

[0085] Furthermore, the third movable plate 52 is positioned on top of the front right side of the second bent surface portion 5020 of the second movable plate 50. With the through hole 5210 (see Figure 11) of the third movable plate 52 aligned with the left and right elongated holes 5040 of the second bent surface portion 5020 of the second movable plate 50, the screw 60 is passed through the through hole 5210 and the left and right elongated holes 5040 from the front, and the wing nut 62 is screwed onto the screw 60 from the rear. Therefore, by loosening the wing nut 62, the position of the third movable plate 52 can be adjusted by moving it left and right relative to the second movable plate 50.

[0086] Furthermore, as shown in Figure 14(C), a connector fixing part 64 is attached and fixed to the lower part of the third movable plate 52 by screws 66 passed through holes 5220 at two locations on the connector fixing surface portion 5240, and the waterproof connector 42 is attached and fixed to the third movable plate 52 by the connector fixing part 64. The structure of the connector fixing part 64 is arbitrary, but for example, it can be a bifurcated curved locking part 6410, and the waterproof connector 42 is attached and fixed by engaging the curved locking part 6410 with a plurality of vertical projections formed around the body of the waterproof connector 42.

[0087] Therefore, as shown in Figures 5 to 7, when the main body fixing plate 46 is attached and fixed to the fixing surface portion 1260 of the main body portion 12 located on the electrode lead-out portion 2440 side, and the cable connection portion 2450 to which the waterproof connector 42 is connected by the connector fixing portion 64 is attached and fixed to the third movable plate 52, the position of the connector fixing portion 64 can be adjusted in the vertical, horizontal, and front-back directions, which are three dimensions, by loosening the screws 54, wing nuts 58, and wing nuts 62.

[0088] Therefore, even if there are tolerance-based dimensional variations in the cable connection mounting structure 45, the electrode lead-out portion 2440 drawn out from the ring portion 2430 of the induction electrode portion 24, etc., or assembly variations in the static charge dispersion head 10, the position of the connector fixing portion 64 can be adjusted by moving the first movable plate 48, the second movable plate 50, and the third movable plate 52 to match these variations. As a result, no load or deformation stress is applied to the ring portion 2430 side via the cable connection portion 2450 to which the waterproof connector 42 is connected by the mounting and fixing of the connector fixing portion 64, and the centering of the induction electrode portion 24 is not adversely affected.

[0089] Furthermore, since the cable connection section 2450 to which the waterproof connector 42 is connected is attached and fixed to the main body section 12 so that the load and stress of the waterproof connector 42 and the voltage application cable 44 are not applied to the ring section 2430, the influence on the centering of the induction electrode section 24 can also be suppressed and prevented. Accordingly, the cable connection section mounting structure 45 ensures that the centering of the ring section 2430 of the induction electrode section 24 is reliably and stably maintained, making it possible to perform uniform and stable charging on water particles passing through the ring section 2430 of the induction electrode section 24.

[0090] [e. Variations of the present invention] Modifications of the electrostatic spraying head according to the present invention will now be described. In addition to the embodiments described above, the electrostatic spraying head according to the present invention includes the following modifications.

[0091] (Elongated holes and through holes in two plate members) In the above embodiment, the structure allows movement in a predetermined direction between two overlapping plate members among the first movable plate 48, the second movable plate 50, and the third movable plate 52 by forming an elongated hole in one plate and a corresponding through-hole in the other plate, but if the plate members on which the elongated hole and the through-hole are provided are separate plate members, it is arbitrary which plate member to provide the elongated hole and the through-hole in.

[0092] (Arrangement structure of movable plates that enables movement in three dimensions) Furthermore, in the above embodiment, the first movable plate 48 and the second movable plate 50 are superimposed in order between the main body fixing plate 46, which is attached and fixed to the main body portion 12, and the third movable plate 52, which attaches and fixes the cable connection portion 2450 to which the waterproof connector 42 is connected, thereby allowing movement in the three-dimensional directions of up and down, left and right, and front and back. However, it is arbitrary which plate members are made movable in which direction. In this embodiment, the first movable plate is made vertically movable relative to the main body fixing plate 46, the second movable plate is made horizontally movable relative to the first movable plate, and the third movable plate is made horizontally movable relative to the second movable plate. However, for example, the first movable plate may be made horizontally movable or horizontally movable relative to the main body fixing plate 46, the second movable plate may be made vertically movable or horizontally movable relative to the first movable plate, and the third movable plate may be made vertically movable or horizontally movable relative to the second movable plate. In other words, the direction of movement of each plate member should be selected so that they can move in any of the vertical, horizontal, and horizontal directions, which together form a three-dimensional direction.

[0093] (others) Furthermore, the present invention is not limited to the embodiments described above, and includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the embodiments described above. [Explanation of Symbols]

[0094] 10: Electrostatic dispersal head 12: Main body 1210: Electrode mounting hole 1240:Terminal room 1260:Fixed surface part 1262: Screw hole 1270: Electrode connector mounting hole 1280: Groove 14: Water side electrode part 16: Electrode connection part 1640: Screw hole 18:Liquid conduit section 20: Main body cover 22: Nozzle section 2210: Nozzle hole 24: Induction electrode part 2410: Electrode core material 2420: Insulating coating 2430: Ring section 2440: Electrode extraction part 2450: Cable connection part 25: Electrode holding structure 26: Arm section 2610: Pivot point 2620: Pressing part 2630 : Holding part 28: Fixed part 30: Fixing plate section 34: Ground cable 36: Cable connector 42: Waterproof connector 44: Voltage application cable 45: Cable connection mounting structure 46: Main body fixing plate 4610: Main body fixing surface part 4620: Moving plate fixed surface part 4630: Through hole 4640: Screw hole 4650: Stopper section 48: First moving board 4810: Upper and lower elongated holes 4820: Front and rear elongated holes 4830: Vertical moving surface section 4840: Back and forth moving surface part 50: Second moving board 5010: First curved surface part 5020:Second curved surface part 5030: Through hole 5040: Left and right long holes 52: Third moving board 5210, 5220: Through-hole 5230: Left and right moving surface section 5240: Connector fixing surface 54, 56, 60, 66: Screws 58,62: Wing nuts 64: Connector fixing part 6410: Curved locking section

Claims

1. A charged spraying head for spraying charged liquid particles onto a target area, at least, A waterproof connector equipped with a high-insulation structure and a waterproof structure, A main body having a nozzle section for dispersing the charged liquid particles, An induction electrode section having a liquid particle charging section for charging liquid particles discharged from the nozzle section, and a cable connection section to which a power cable for applying a predetermined voltage when the liquid particles are charged by the liquid particle charging section is connected via the waterproof connector, the induction electrode section having a liquid particle charging section for charging liquid particles by the liquid particle charging section, Equipped with, A static charge spraying head is characterized by having a connector fixing portion with a bifurcated curved locking portion, the connector fixing portion being adjustable in each of the three dimensions corresponding to the position of the cable connection portion of the induction electrode portion, and a cable connection portion mounting structure being provided for attaching and fixing the waterproof connector to the main body by engaging the curved locking portion of the connector fixing portion with a plurality of vertical projections formed on the outer circumference of the waterproof connector.

2. A charged spraying head for spraying charged liquid particles onto a target area, at least, A waterproof connector equipped with a high-insulation structure and a waterproof structure, A main body having a nozzle section for dispersing the charged liquid particles, An induction electrode section to which a predetermined voltage is applied and which charges the liquid particles released from the nozzle section, Equipped with, The induction electrode portion is, The nozzle portion is positioned so that the discharge axis of the liquid particles is at the center of the opening, and a ring portion is provided to charge the liquid particles that have passed through it. The electrode extraction portion drawn out from the ring portion, A cable connection portion is formed in the electrode lead-out portion, to which a power cable for connecting the waterproof connector and applying the predetermined voltage is connected, Equipped with, A static charge spraying head is characterized by having a connector fixing portion with a bifurcated curved locking portion, the connector fixing portion being adjustable in each of the three dimensions corresponding to the position of the cable connection portion of the induction electrode portion, and a cable connection portion mounting structure being provided for attaching and fixing the waterproof connector to the main body by engaging the curved locking portion of the connector fixing portion with a plurality of vertical projections formed on the outer circumference of the waterproof connector.

3. In the electrostatic spraying head according to claim 1 or 2, The main body is equipped with three fixing surfaces around its perimeter. The charging spraying head is characterized in that the cable connection mounting structure is attached and fixed to any of the fixed surfaces.

4. In the electrostatic spraying head according to claim 1 or 2, The aforementioned cable connection mounting structure is, A main body fixing part that is attached and fixed to a predetermined position on the main body, The first movable part is adjustable in position in any of the three-dimensional directions relative to the main body fixing part, and is attached and fixed to the main body fixing part. A second movable part is positioned relative to the first movable part in a second direction which is one of the three-dimensional directions and different from the first direction, and is attached to and fixed to the first movable part. A third movable part is positioned relative to the second movable part in any of the three-dimensional directions, and is different from the first and second directions, and is attached and fixed to the second movable part, and the waterproof connector is attached and fixed by the connector fixing part, A charged spraying head characterized by having the following features.

5. In the electrostatic spraying head according to claim 4, The main body fixing portion, the first movable portion, the second movable portion, and the third movable portion are plate members. The electrostatic spraying head is characterized in that the second movable part has a first bent surface portion that is attached to and fixed to the first movable part and extends in the second direction, and the third movable part has a second bent surface portion that is attached to and fixed to the third movable part and extends in the third direction.

6. In the electrostatic spraying head according to claim 5, As a structure that allows the position of the plate member to be adjusted in any of the first to third directions, A through hole formed in one of the plate members, The other plate member has an elongated hole formed in a direction that allows for position adjustment, A fastening portion inserted through the aforementioned through hole and the aforementioned elongated hole, The fastening receiving portion to which the fastening portion is fastened, A charged spraying head characterized by having the following features.

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