CN116196454A - Handheld electrostatic sprayer - Google Patents

Abstract

The invention relates to electrostatic spraying equipment and discloses a handheld electrostatic sprayer which comprises a handheld shell, a liquid storage unit, a miniature diaphragm pump, a spraying module, a high-voltage module and a power module, wherein the liquid storage unit is connected with the handheld shell, the miniature diaphragm pump, the spraying module, the high-voltage module and the power module are arranged in the handheld shell, a water inlet interface of the miniature diaphragm pump is connected with the liquid storage unit, a water outlet interface of the miniature diaphragm pump is connected with the spraying module, a charge electrode is arranged in the spraying module, the charge electrode is connected with the high-voltage module, the miniature diaphragm pump and the high-voltage module are both connected with the power module, the high-voltage module can control the output of the high-voltage module according to the position state of the miniature diaphragm pump so as to output a high-voltage electric field when the water inlet interface and the water outlet interface are in a cut-off state, and prevent high voltage from being transmitted to the liquid storage unit and the handheld part to cause electric shock risks when mist drops are charged.

Description

Handheld electrostatic sprayer

Technical Field

The invention relates to electrostatic spraying equipment, in particular to a handheld electrostatic sprayer.

Background

Electrostatic spraying is a method of charging sprayed droplets by a high-voltage electrostatic generator, and because the sprayed droplets are charged with high voltage, a strong electrostatic field is formed between the droplets and a spray target. When the fog drops approach the spraying target under the action of the spraying force, the fog drops are more attracted by the spraying target under the action of the electrostatic force and can surround and adhere to the side surfaces and the back surfaces of the spraying target, so that the whole surfaces of the spraying target in different directions are reached, the deposition of the fog drops on the target object is improved, the deposition in a non-target area is reduced, and the utilization rate of the fog drops and the uniformity of the distribution of the fog drops on the whole surface of the spraying target are effectively improved.

An electrostatic spraying apparatus is an apparatus capable of spraying out droplets of a liquid raw material and causing the droplets to be electrostatically charged at a high voltage. Electrostatic spraying devices typically drive liquid materials through high pressure air to form droplets, or drive liquid materials through spray nozzles at high speeds to form droplets; the high-voltage electrode of the high-voltage electrostatic generator is arranged in the liquid raw material, or the liquid raw material or fog drops are provided with high-voltage electrodes by a metal flow guide pipe connected with the high-voltage electrode of the high-voltage electrostatic generator, so that the electrostatic spraying of the liquid raw material can be conveniently carried out, and the high-voltage electrostatic spraying device has the advantages of convenience in use, good spraying effect and high working efficiency, and is widely applied to the fields of material spraying, pesticide spraying, medical disinfection and the like. Especially in the medical disinfection field, because the sprayed charged fog drops can be attached to the surface of a target object in an omnibearing manner under the action of electrostatic adsorption without dead angles, the disinfection effect is greatly improved, and electrostatic spraying equipment, especially a handheld electrostatic sprayer, is widely used in recent years, so that great convenience is brought to medical disinfection work.

At present, the common hand-held electrostatic sprayer for sterilization mainly has two modes: one is to connect the high-voltage electrode of the high-voltage electrostatic generator into the water tank to charge the sterilizing liquid medicine in the water tank, so that the sprayed liquid medicine fog drops have high-voltage static electricity; the other is that the high-voltage electrode of the high-voltage electrostatic generator is connected to the water outlet of the spray nozzle, and the high-voltage electrode discharges the mist drops at the water outlet, so that the sprayed liquid medicine mist drops have high-voltage static electricity. Both the two modes can lead the disinfection liquid medicine to carry high-voltage static electricity, the disinfection work is usually carried out under the environment with high humidity, the high-voltage static electricity is easily transmitted to the hands of the disinfection personnel through a wet handheld static sprayer, the electric stimulation is generated on the disinfection personnel, and even the safety risk is caused.

Disclosure of Invention

The invention aims to solve the technical problem of providing a handheld electrostatic sprayer, which can reduce the leakage risk of high-voltage static electricity while carrying out electrostatic spraying.

In order to achieve the above object, the invention provides a handheld electrostatic sprayer, which comprises a handheld shell, a liquid storage unit, a micro diaphragm pump, a spraying module, a high-voltage module and a power module, wherein the liquid storage unit is connected with the handheld shell, the micro diaphragm pump, the spraying module, the high-voltage module and the power module are arranged in the shell, a water inlet interface of the micro diaphragm pump is connected with the liquid storage unit, a water outlet interface is connected with the spraying module, a charge electrode is arranged in the spraying module, the charge electrode is connected with the high-voltage module, the micro diaphragm pump and the high-voltage module are both connected with the power module, and the high-voltage module can control the output of the high-voltage module according to the position state of the micro diaphragm pump so as to output a high-voltage electric field when the water inlet interface and the water outlet interface are in a blocking state.

Preferably, the miniature diaphragm pump comprises a pump motor, a diaphragm module, a check valve module and a water pipe interface module, wherein a deflection rod is arranged on an output shaft of the pump motor, the diaphragm module comprises a sucker support and a plurality of diaphragm suckers, a deflection rod interface is arranged in the middle of the sucker support and connected with the deflection rod through the deflection rod interface, the plurality of diaphragm suckers are arranged on the periphery of the sucker support, the check valve module comprises an inlet cavity, an outlet cavity, a water inlet check valve and a water outlet check valve, the water inlet check valve comprises a water inlet valve port and a water inlet valve plate, the water outlet check valve comprises a water outlet valve port and a water outlet valve plate, the water inlet valve port is communicated with the inlet cavity, the water inlet valve plate is arranged on the outlet side of the water outlet valve port, the water inlet interface and the water outlet interface are arranged on the water pipe interface module, the water inlet interface is communicated with the inlet cavity, the water outlet interface is communicated with the outlet cavity, and the water outlet valve port is communicated with the outlet cavity, and the diaphragm sucker is arranged in a coverage range opposite to the water inlet valve.

Preferably, a magnetic element is arranged on an output shaft of the pump motor, and a magnetic induction element is arranged on the periphery of the magnetic element so as to be capable of detecting the position state of the pump motor through the magnetic induction element, and the magnetic induction element is electrically connected with the high-voltage module.

Further preferably, the magnetic element is a magnetic ring with eccentric magnetic field, and the magnetic induction element is a hall sensor arranged at different positions on the periphery of the magnetic ring.

Preferably, the diaphragm sucking disc, the water inlet one-way valve and the water outlet one-way valve are all provided with high-resistance insulating films.

Preferably, the spraying module comprises a liquid flow channel and a spraying unit, the charged electrode is arranged in the liquid flow channel, the spraying unit comprises at least one spraying nozzle, one end of the liquid flow channel is connected with the water outlet port, the other end of the liquid flow channel is connected with the spraying nozzle, and the charged electrode is electrically connected with the high-voltage module.

Further preferably, the charging electrode is a plurality of electrode strips which are arranged on the side wall of the liquid flow channel and extend along the axial direction of the liquid flow channel, and the electrode strips are uniformly distributed on the radial direction of the side wall of the liquid flow channel.

Preferably, the charging electrode is a conductive electrode tube arranged on the liquid flow channel, and the tube wall of the conductive electrode tube is clung to the side wall of the liquid flow channel.

Preferably, the hand-held housing includes a grip portion provided with a ground electrode and a nozzle mounting port, and the spray unit is detachably connected with the nozzle mounting port and the liquid flow passage.

Further preferably, the handheld housing is provided with a liquid storage unit mounting interface, and the liquid storage unit is detachably mounted on the handheld housing through the liquid storage unit mounting interface.

Through the technical scheme, the handheld electrostatic atomizer provided by the invention has the advantages that the charging electrode is arranged in the spraying module, so that the high-voltage electric field generated by the high-voltage module is applied to the fog drop area, and the charging electrode is positioned far away from the liquid storage unit while the disinfectant liquid is charged, thereby being beneficial to forming the electric isolation of the liquid storage unit; the miniature diaphragm pump can form periodic partition between the water inlet interface and the water outlet interface, so that the water path of the spraying module and the liquid storage unit form periodic partition, and electric isolation between the spraying module and the liquid storage unit is facilitated; the high-voltage module outputs a high-voltage electric field according to the position state of the micro diaphragm pump, so that the high-voltage electric field can be generated when the waterway between the spraying module and the liquid storage unit is in a reliable isolation state, and the high-voltage electric field output is stopped when the waterway between the spraying module and the liquid storage unit is in a switching state between communication and isolation, so that the electric isolation between the spraying module and the liquid storage module is formed. On one hand, the high-voltage pulse type centralized release generated by the high-voltage module can be realized, the strength of an electrostatic field and the charge quantity carried by fog drops are effectively improved, and the distribution of the fog drops is more uniform; on one hand, the risk that the handheld shell is electrified due to the fact that high-voltage electricity is transmitted to the liquid storage unit can be prevented, on the other hand, high-voltage electricity generated by the high-voltage module is intensively released in a pulse mode, the strength of a high-voltage electric field and the electric charge quantity carried by fog drops are effectively improved, and the distribution of the fog drops and the adhesion on a spraying target are more uniform.

Drawings

FIG. 1 is a schematic external construction of an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of a hand-held housing according to one embodiment of the present invention;

FIG. 3 is a schematic diagram of a micro diaphragm pump according to one embodiment of the present invention;

FIG. 4 is a schematic diagram of a pump motor according to one embodiment of the invention;

FIG. 5 is a schematic diagram of the forward (a) and backward (b) configurations of a diaphragm module according to one embodiment of the present invention;

FIG. 6 is a schematic view of the forward (a) and backward (b) configurations of a check valve module according to one embodiment of the present invention;

FIG. 7 is a schematic view of the forward (a) and backward (b) structures of a water line interface module according to one embodiment of the present invention;

FIG. 8 is a schematic diagram of a spray module configuration according to one embodiment of the present invention;

fig. 9 is a schematic diagram of the relationship between the pressure of the diaphragm suction cup and the pulse electrostatic field according to an embodiment of the present invention.

Reference numerals illustrate:

1. hand-held housing 11 grip

111. Nozzle mounting opening of grounding electrode 12

2. Reservoir unit 21 reservoir unit bracket

3. Micro diaphragm pump 301 water inlet interface

302. Pump motor with water outlet 31

311. Magnetic induction element of deflection rod 312

32. Diaphragm module 321 sucker support

3211. Diaphragm sucker with deflection rod interface 322

33. Inlet cavity of one-way valve module 331

332. Outlet chamber 333 water inlet one-way valve

3331. Valve block for water inlet valve port 3332

334. Outlet one-way valve 3341 outlet valve port

3342. Water pipe interface module of water outlet valve plate 34

4. Charged electrode of spray module 41

42. Liquid flow channel 43 spray unit

431. High-pressure module of spray nozzle 5

6. Power supply module

Detailed Description

In the present invention, unless otherwise stated, the azimuth words such as "front and rear" are used to indicate azimuth or positional relationship based on the azimuth or positional relationship of the hand-held electrostatic atomizer of the present invention in actual use. Wherein the direction indicated by the azimuth term "front" is the direction away from the user. The description of the orientation or positional relationship of the components in the present invention is consistent with the mounting orientation in actual use thereof.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The following detailed description of the embodiments of the invention is provided in connection with the accompanying drawings, it being understood that the embodiments described herein are for purposes of illustration and explanation only, and the scope of the invention is not limited to the following embodiments.

An embodiment of the handheld electrostatic atomizer of the present invention, as shown in fig. 1 and 2, comprises a handheld housing 1, a liquid storage unit 2, a micro diaphragm pump 3, an atomizer module 4, a high voltage module 5, and a power module 6. The hand-held housing 1 may be made of a polymer material such as plastic, and may be provided in various shapes that are advantageous for an operator to hold, such as a pistol shape, so that a user can conveniently hold the hand-held housing 1 with his hand for electrostatic spray disinfection. The liquid storage unit 2 can be various containers capable of storing water containing disinfectant with a certain concentration, and the liquid storage unit 2 is connected with the handheld housing 1, specifically, the liquid storage unit 2 can be installed on the handheld housing 1, and can also be connected with the handheld housing 1 through a water pipeline. In using the liquid storage unit mounted on the hand-held housing 1, the liquid storage unit 2 may be used in various suitable shapes mounted on the hand-held housing 1, such as a circle, a square, a clip shape, and the like.

The miniature diaphragm pump 3, the spraying module 4, the high-pressure module 5 and the power supply module 6 are all installed in the handheld shell 1, wherein the miniature diaphragm pump 3 is a plug pump which is used for isolating pumped liquid from a driving plug through a diaphragm, a water inlet interface 301 and a water outlet interface 302 are arranged on the miniature diaphragm pump 3, and when the miniature diaphragm pump 3 works, disinfectant is sucked from the water inlet interface 301 through the cooperation of the periodical reciprocating motion of the diaphragm and the check valve and is conveyed out through the water outlet interface 302. In the working process of the micro diaphragm pump 3, the one-way valve is continuously opened and closed along with the movement of the diaphragm, so that the one-way circulation of the disinfectant from the water inlet interface 301 to the water outlet interface 302 is ensured, and the liquid path between the water inlet interface 301 and the water outlet interface 302 is in an alternately-blocked state.

The water inlet interface 301 is connected with the liquid storage unit 2, so that the configured disinfectant can be sucked from the liquid storage unit 2 for spraying and disinfection, the spraying module 4 of the water outlet interface 302 is connected, so that the disinfectant can be conveyed into the spraying module 4 to form disinfectant mist drops, and the spraying range of the disinfectant and the spraying uniformity of the disinfectant are improved. The spraying module 4 may be various devices capable of spraying tiny droplets of liquid in a large range, and a charging electrode 41 is disposed in the spraying module 4, when the disinfectant enters the spraying module 4, the disinfectant can contact with the charging electrode 41, and the charging electrode 41 can charge the disinfectant under the action of a high-voltage electric field, so that the droplets of disinfectant sprayed by the spraying module 4 have electrostatic charges. The disinfection liquid droplets with static charges can form repulsive force with each other, so that the spraying range of the disinfection liquid droplets is wider, when the disinfection liquid droplets with static charges are close to a disinfection target object, electrostatic attraction can be generated between the disinfection liquid droplets and the target object, so that the disinfection liquid droplets can be adsorbed on the spraying target object more, part of the disinfection liquid droplets can be adhered to the back side of the spraying target object in a surrounding manner, and the utilization rate of the disinfection liquid and the disinfection effect of the target object are improved.

The high voltage module 5 may use various existing electronic devices capable of generating a high voltage electric field, where the high voltage refers to a voltage with a voltage value greater than 1KV, the electrostatic output end of the high voltage module 5 is usually provided with two electrodes, one electrode is grounded to form a zero potential, the other electrode is connected with the charging electrode 41, the high voltage electric potential generated by the high voltage module 5 is transferred to the spraying module 4, and a high voltage electric field is generated around the charging electrode 41, so that the disinfectant mist sprayed by the spraying module 4 is charged with electrostatic charges.

The miniature diaphragm pump 3 and the high-pressure module 5 are both connected with the power module 6, the miniature diaphragm pump 3 works under the power action of the power module 6 to continuously pump out the disinfectant in the liquid storage unit 2, and a certain pressure is formed to be transmitted to the spraying module 4 for forming uniform disinfectant mist drops; the high-voltage module 5 converts the electric energy provided by the power supply module 6 into a high-voltage electric field, and the high-voltage electric field is transmitted to the spraying module 4 so that the disinfectant mist drops have more static charges. The miniature diaphragm pump 3 is provided with a state sensing device capable of sensing the rotation position state of the miniature diaphragm pump 3, the state sensing device can be a metal sheet, a magnetic sheet and the like marking piece and a corresponding detecting piece arranged on the diaphragm, or can be an encoder or a position marking disc and a marking detecting piece arranged on a pump motor for driving the diaphragm to move, the state sensing device is electrically connected with the high-pressure module 5, can transmit rotation position information of the miniature diaphragm pump 3 to the high-pressure module 5, and can control the high-pressure module 5 to periodically work according to the rotation state of the miniature diaphragm pump 3, a pulse type high-voltage electric field is generated when a liquid path between the water inlet interface 301 and the water outlet interface 302 is normally and reliably blocked, and electrostatic field output is stopped when the liquid path between the water inlet interface 301 and the water outlet interface 302 is switched between communication and blocking. Therefore, the electrostatic field generated by the high-voltage module 5 can be concentrated between the micro diaphragm pump 3 and the spraying module 4, the charge-to-mass ratio of disinfectant droplets output by the spraying module 4 is improved, the charge efficiency generated by the high-voltage module 5 is improved, other parts of the electrostatic sprayer, particularly the disinfectant in the liquid storage unit 2, are not electrified, and the risk of electric shock to a user is reduced. The structure of the high voltage module 5 and the control structure for generating the pulse static electricity are conventional technologies in the related art, and will not be described in detail in this specification.

In some embodiments of the handheld electrostatic sprayer of the present application, as shown in fig. 3 to 7, the micro diaphragm pump 3 includes a pump motor 31, a diaphragm module 32, a check valve module 33, and a water pipe interface module 34, and the pump motor 31, the diaphragm module 32, the check valve module 33, and the water pipe interface module 34 are sequentially connected.

The output shaft of the pump motor 31 is provided with a deflection lever 311, and when the pump motor 31 rotates, the end of the deflection lever 311 can be driven to perform a circular motion around the rotation shaft of the pump motor 31.

The membrane module 32 includes a suction cup holder 321 and a membrane suction cup 322. The suction cup support 321 is a cross-shaped hard support, a deflection rod interface 3211 is arranged at the center of the cross-shaped suction cup support 321, the end part of the deflection rod 311 is arranged in the deflection rod interface 3211, and when the pump motor 31 rotates, the suction cup support 321 can be driven to swing around through the deflection rod 311. The four ends of the cross-shaped sucker support 321 are respectively connected with a diaphragm sucker 322, so that the diaphragm sucker 322 is uniformly arranged on the periphery of the sucker support 321. When the sucker support 321 swings around under the drive of the deflection rod 311, the diaphragm sucker 322 on the periphery of the sucker support 321 can be driven to sequentially perform compression and stretching movements.

The check valve module 33 comprises an inlet cavity 331, an outlet cavity 332, a water inlet check valve 333 and a water outlet check valve 334, wherein the inlet cavity 331 is arranged in the peripheral area of the outlet cavity 332, the inlet cavity 331 and the outlet cavity 332 are coaxially arranged, a diaphragm partition plate is arranged at one ends of the inlet cavity 331 and the outlet cavity 332, the inlet cavity 331 is communicated with the water inlet port 301, the outlet cavity 332 is communicated with the water outlet port 302, the water inlet check valve 333 is arranged on a liquid path between the inlet cavity 331 and the diaphragm suction disc 322, and the water outlet check valve 334 is arranged on a liquid path between the diaphragm suction disc 322 and the outlet cavity 332.

The water inlet check valve 333 and the water outlet check valve 334 are provided with four, the water inlet check valve 333 comprises a water inlet valve port 3331 and a water inlet valve plate 3332, and the water outlet check valve 334 comprises a water outlet valve port 3341 and a water outlet valve plate 3342. The water inlet ports 3331 are disposed on the diaphragm plate at positions corresponding to the inlet chamber 331, and the four water inlet ports 3331 are uniformly distributed on the diaphragm plate and are all communicated with the inlet chamber 331. The water inlet valve block 3332 is arranged at the outlet side of the water inlet valve port 3331, namely, the side close to the membrane sucking disc 322, the water inlet valve block 3332 is close to the water inlet valve port 3331, when the membrane sucking disc 322 stretches, the disinfectant entering from the water inlet valve port 3331 can prop up the water inlet valve block 3332, so that the water inlet one-way valve 333 is opened, and the disinfectant enters the membrane sucking disc 322; when the diaphragm suction cup 322 compresses, the disinfectant pushes the water inlet valve plate 3332 to close the water inlet valve port 3331, so that the water inlet check valve 333 is closed to prevent the disinfectant from flowing back into the inlet cavity 331. The water outlet ports 3341 are disposed on the diaphragm plate at positions corresponding to the outlet chamber 332, and the four water outlet ports 3341 are uniformly distributed on the diaphragm plate and all communicate with the outlet chamber 332. The water outlet valve block 3342 is arranged at the outlet side of the water outlet valve port 3341, namely at one side in the outlet cavity 332, the water outlet valve block 3342 is close to the water outlet valve port 3341, when the diaphragm suction disc 322 stretches, the disinfectant in the outlet cavity 332 pushes the water outlet valve block 3342 to seal the water outlet valve port 3341, so that the water outlet one-way valve 334 is closed, and the disinfectant in the outlet cavity 332 is prevented from flowing back; when the diaphragm suction cup 322 is compressed, the disinfectant is pushed to push the water valve plate 3342 open, so that the water outlet one-way valve 334 is opened, the disinfectant enters the outlet cavity 332 through the water outlet valve port 3341, and the disinfectant is output from the outlet cavity 332.

When the check valve module 33 is mounted on the diaphragm module 32, the four diaphragm sucking discs 322 are respectively located at positions corresponding to one water inlet check valve 333 and one water outlet check valve 334, and each diaphragm sucking disc 322 covers the corresponding water inlet valve port 3331 and the corresponding water outlet valve port 3341, so that the expansion and contraction of the diaphragm sucking discs 322 can push the water inlet valve port 3331 and the water outlet valve port 3341 to open and close, and the disinfectant in the inlet cavity 331 is continuously conveyed into the outlet cavity 332, so that the disinfectant is pumped out. The diaphragm partition plate, the water inlet valve plate 3332 and the water outlet valve plate 3342 are made of insulating materials, such as silica gel, insulating rubber and the like, when the water inlet valve plate 3332 closes the water inlet valve port 3331, electric insulation between the inlet cavity 331 and the diaphragm sucking disc 322 can be achieved, and when the water outlet valve plate 3342 closes the water outlet valve port 3341, electric insulation between the outlet cavity 332 and the diaphragm sucking disc 322 can be achieved, so that electric insulation between the water inlet interface 301 and the water outlet interface 302 of disinfectant is achieved, electric isolation of the spraying module 4 is reliably achieved, and high-voltage electrostatic fields at the spraying module 4 are prevented from being conducted to other parts such as the water storage module 2.

The water inlet port 301 and the water outlet port 302 are provided on the water pipe port module 34, and when the water pipe port module 34 is mounted on the check valve module 33, the water inlet port 301 communicates with the inlet chamber 331 so as to be capable of sucking the sterilizing liquid in the liquid storage unit 2 into the inlet chamber 331; the outlet port 302 communicates with the outlet chamber 332 to enable delivery of the sanitizing liquid in the outlet chamber 332 to the spray module 4.

When the pump motor 31 rotates, the pressure change of the disinfectant in the four membrane sucking discs 322 is shown as A, B, C, D in fig. 9, when the pressure of the disinfectant in the membrane sucking discs 322 is greater than zero, the water inlet check valve 333 is closed, the water outlet check valve 334 is opened, and the liquid path between the water inlet interface 301 and the water outlet interface 302 is in an insulating state; when the pressure of the disinfectant in the membrane sucker 322 is less than zero, the water inlet check valve 333 is opened, the water outlet check valve 334 is closed, and the liquid path between the water inlet interface 301 and the water outlet interface 302 is also in an insulating state; when the pressure of the sterilizing liquid in the membrane suction cup 322 is changed between greater than zero and less than zero, the water inlet check valve 333 and the water outlet check valve 334 are both in an open state and a closed state, at this time, the water inlet check valve 333 and the water outlet check valve 334 are not completely closed, and the liquid path between the water inlet interface 301 and the water outlet interface 302 is not in an insulating state, which easily causes high-voltage static electricity to be conducted from the spray module 4 to the liquid storage unit 2, and causes an electric shock risk.

The high-voltage module 5 generates a pulse type electrostatic field as shown in part E of fig. 9 according to the rotation state of the micro diaphragm pump 3, generates a high-voltage electrostatic field when the four water inlet check valves 333 and the four water outlet check valves 334 are both in a reliably opened state or a reliably closed state, and stops generating a high-voltage electrostatic field when the water inlet check valves 333 and the water outlet check valves 334 are not completely closed, so that reliable electrical isolation between the spray module 4 and the liquid storage unit 2 can be ensured.

In a preferred embodiment of the handheld electrostatic atomizer of the present application, as shown in fig. 2 and 3, a magnetic element is provided on the output shaft of the pump motor 31, which is typically provided at the trailing end of the output shaft of the pump motor 31, i.e. the end opposite the deflection lever 311. A plurality of magnetic induction elements 312 are provided on the outer periphery of the pump motor 31 at positions corresponding to the magnetic elements, and when the pump motor 31 rotates, the magnetic elements can be driven to rotate synchronously, and the magnetic induction elements 312 can detect a change in magnetic flux caused by the rotation of the magnetic elements, so that the state information of the rotation position of the pump motor 31 can be detected, and the deflection position of the deflection lever 311 can be known. The magnetic induction element 312 is electrically connected to the high-voltage module 5, and can transmit the deflection position information of the deflection lever 311 detected to the high-voltage module 5, so that the high-voltage module 5 can generate a pulsed high-voltage electrostatic field according to the deflection position information of the deflection lever 311, and a high-voltage electrostatic field is generated when the water inlet interface 301 and the water outlet interface 302 are reliably insulated.

As a specific implementation mode of the handheld electrostatic atomizer, the magnetic element adopts a magnetic ring with eccentric magnetic field, and when the magnetic ring rotates, the magnetic field around the magnetic ring can generate strong and weak change. The magnetic induction element 312 adopts two hall sensors orthogonally distributed around the periphery of the magnetic ring. By two hall sensors distributed in quadrature, the change of the magnetic field around the magnetic ring can be sensed better, thereby accurately detecting the rotational position state of the pump motor 31.

In some embodiments of the handheld electrostatic sprayer of the present application, high barrier films are provided on the surfaces of the membrane suction cup 322, the water inlet check valve 333, and the water outlet check valve 334. The high-blocking insulating film may be formed by coating the surfaces of the diaphragm suction cup 322, the water inlet check valve 333, and the water outlet check valve 334 with a pressure-resistant high-resistivity insulating paint DH351 or a TPV paint IMV-1040A. The high-resistance insulating film can increase the insulativity between the inlet cavity 331 and the diaphragm suction cup 322 when the water inlet valve plate 3332 closes the water inlet valve port 3331, and increase the insulativity between the diaphragm suction cup 322 and the outlet cavity 332 when the water outlet valve plate 3342 closes the water outlet valve port 3341, thereby ensuring the electrical isolation between the spraying module 4 and the liquid storage unit 2, preventing the high voltage generated by the high-voltage module 5 from being transmitted to the liquid storage unit 2 and the handheld part of the sprayer, and causing the electrical stimulation of operators.

In some embodiments of the handheld electrostatic sprayer of the present application, as shown in fig. 8, spray module 4 includes a flow channel 42 and a spray unit 43, one end of flow channel 42 is connected to water outlet port 302, and the other end is connected to spray unit 43, and the disinfectant enters spray unit 43 through flow channel 42. The charging electrode 41 is disposed in the liquid flow channel 42 and electrically connected with the high-voltage module 5, when the disinfectant flows through the position where the charging electrode 41 is located, the high-voltage electric field on the charging electrode 41 can charge the disinfectant, so that the disinfectant can have a large amount of static charges, according to the polarity of the charging electrode 41, the disinfectant can have positive charges or negative charges, and the disinfectant with the static charges is sprayed out through the spraying unit 43 to form disinfectant droplets with the static charges.

The spray nozzle 431 may be any of a variety of conventional nozzles as desired. The liquid flow channel 42 is connected to an inlet of the spray nozzle 431, and supplies the disinfectant to the spray nozzle 431, and a wide range of disinfectant droplets are discharged through the spray nozzle 431.

In a preferred embodiment of the handheld electrostatic atomizer of the present application, a plurality of electrode strips extending axially along the flow channel 42 are provided on the side wall of the flow channel 42, and the plurality of electrode strips are fixed on the side wall of the flow channel 42 and are uniformly distributed in the radial direction of the flow channel 42 to form the charging electrode 41. The charge electrode 41 formed by the plurality of electrode bars can charge the sterilizing liquid in a larger range, and the amount of electrostatic charge in the sterilizing liquid is increased.

In another preferred embodiment of the handheld electrostatic atomizer of the present application, the charging electrode 41 is a conductive electrode tube disposed in the liquid flow channel 42, the diameter of the conductive electrode tube is equal to that of the liquid flow channel 42, the conductive electrode tube is fixed in the liquid flow channel 42, and the periphery of the wall of the conductive electrode tube is tightly attached to the side wall of the liquid flow channel 411, so that the disinfectant passing through the liquid flow channel 42 flows through the conductive electrode tube, and the carrying amount and uniformity of the electrostatic charges in the disinfectant are improved by the high-intensity uniform magnetic field in the conductive electrode tube.

In some embodiments of the handheld electrostatic sprayer of the present application, as shown in fig. 1 and 2, the handheld housing 1 includes a grip 11 and a nozzle mounting opening 12. The holding part 11 is arranged in a shape which is convenient for a user to hold with one hand, the nozzle mounting opening 12 is arranged at the front end of the sprayer, the spraying unit 43 which is convenient for being arranged in the nozzle mounting opening 12 sprays disinfectant droplets in a direction away from the user, and the influence of the disinfectant droplets on the user is reduced.

The ground electrode 111 is disposed on the outer wall of the grip 11, and the ground electrode 111 generally has a large surface area, and the ground electrode 111 is disposed at the boundary between the rear end surface and the side surface of the grip 11, so that the hand of the user is more likely to be in close contact with the ground electrode 111, and the ground electrode of the high-voltage module 5 is formed by the human body.

The spray unit 43 is installed in the nozzle installation opening 12 and detachably connected to the nozzle installation opening 12, and when the spray unit 43 is installed at the nozzle installation opening 12, the spray unit 43 simultaneously forms a connection with the liquid flow channel 42, and when the spray unit 43 is detached from the nozzle installation opening 12, the spray unit 43 simultaneously separates from the liquid flow channel 42. The detachable structure of the spraying unit 43 facilitates cleaning and replacement of the spraying unit 43, and is beneficial to prolonging the service life of the handheld electrostatic sprayer.

In a preferred embodiment of the handheld electrostatic atomizer of the present application, as shown in fig. 1 and 2, a liquid storage unit mounting interface is provided on the handheld housing 1, and the liquid storage unit 2 may be mounted on the handheld housing 1 through the liquid storage unit mounting interface, and spray disinfection is performed by using a disinfectant contained in the liquid storage unit 2; the liquid storage unit 2 can be detached from the liquid storage unit mounting interface, so that disinfectant can be conveniently added into the liquid storage unit 2.

The handheld shell 1 can be further provided with a liquid storage unit bracket 21 extending to the lower side of the liquid storage unit 2, and the liquid storage unit bracket 21 can form a support for the liquid storage unit 2 from the lower side of the liquid storage unit 2, so that the position stability of the liquid storage unit 2 is improved.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "a particular implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. In this specification, their schematic representations are not necessarily directed to the same embodiment.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a plurality of simple variants of the technical proposal of the invention can be carried out, comprising that each specific technical feature is combined in any suitable way, and in order to avoid unnecessary repetition, the invention does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims (10)

1. The utility model provides a hand-held type electrostatic atomizer, its characterized in that, including handheld casing (1), stock solution unit (2), miniature diaphragm pump (3), spraying module (4), high pressure module (5) and power module (6), stock solution unit (2) with handheld casing (1) is connected, miniature diaphragm pump (3), spraying module (4), high pressure module (5) and power module (6) set up in casing (1), the water inlet interface (301) of miniature diaphragm pump (3) with stock solution unit (2) are connected, and water outlet interface (302) with spraying module (4) are connected, be provided with charge electrode (41) in spraying module (4), charge electrode (41) with high pressure module (5) are connected, miniature diaphragm pump (3) and high pressure module (5) all with power module (6) are connected, high pressure module (5) can control according to the position state of miniature diaphragm pump (3) high pressure output module (301) can be in when water outlet interface (302) are in water outlet interface.

2. The hand-held electrostatic atomizer according to claim 1, wherein the micro-membrane pump (3) comprises a pump motor (31), a membrane module (32), a check valve module (33) and a water pipe interface module (34), a deflection rod (311) is arranged on an output shaft of the pump motor (31), the membrane module (32) comprises a suction disc support (321) and a plurality of membrane suction discs (322), a deflection rod interface (3211) is arranged in the middle of the suction disc support (321), the micro-membrane pump is connected with the deflection rod (311) through the deflection rod interface (3211), a plurality of membrane suction discs (322) are arranged on the periphery of the suction disc support (321), the check valve module (33) comprises an inlet cavity (331), an outlet cavity (332), a water inlet check valve (333) and a water outlet check valve (334), the water inlet check valve (333) comprises a water inlet valve port (3331) and a water inlet valve plate (3332), the water outlet check valve (334) comprises a water outlet valve port (3341) and a water outlet valve plate (3342), the valve port (31) is communicated with the water inlet (3331) and the water inlet (3332) at the inlet (3332), the water outlet valve plate (3342) is arranged on the outlet side of the water outlet valve port (3341), the water inlet interface (301) and the water outlet interface (302) are arranged on the water pipe interface module (34), the water inlet interface (301) is communicated with the inlet cavity (331), the water outlet interface (302) is communicated with the outlet cavity (332), and the diaphragm sucking disc (322) is arranged opposite to the one-way valve module (33) so that the water inlet valve port (3331) and the water outlet valve port (3341) are located in the coverage range of the diaphragm sucking disc (322).

3. The hand-held electrostatic atomizer according to claim 2, characterized in that a magnetic element is provided on the output shaft of the pump motor (31), the periphery of which magnetic element is provided with magnetic induction elements (312) to enable the detection of the position state of the pump motor (31) by means of the magnetic induction elements (312), the magnetic induction elements (312) being connected with the high-voltage module (5).

4. A hand-held electrostatic atomizer according to claim 3, characterized in that the magnetic element is a magnetic ring with an eccentric magnetic field, and the magnetic induction element (312) is a hall sensor arranged at different positions on the periphery of the magnetic ring.

5. The hand-held electrostatic atomizer according to claim 2, wherein the membrane suction cup (322), the water inlet check valve (333) and the water outlet check valve (334) are each provided with a high-barrier film.

6. A hand-held electrostatic atomizer according to any one of claims 1-5, characterized in that the spray module (4) comprises a flow channel (42) and a spray unit (43), the charge electrode (41) being arranged in the flow channel (42), the spray unit (43) comprising at least one spray nozzle (431), one end of the flow channel (42) being connected to the water outlet (302) and the other end being connected to the spray nozzle (431), the charge electrode (41) being electrically connected to the high voltage module (5).

7. The hand-held electrostatic atomizer according to claim 6, wherein the charging electrode (41) is a plurality of electrode strips arranged on the side wall of the flow channel (42) and extending axially along the flow channel (42), and the electrode strips are uniformly distributed in the radial direction of the side wall of the flow channel (42).

8. The hand-held electrostatic atomizer according to claim 6, characterized in that the charging electrode (41) is a conductive electrode tube arranged in the flow channel (42), the tube wall of which is in close contact with the side wall of the flow channel (42).

9. A hand-held electrostatic atomizer according to claim 6, characterized in that the hand-held housing (1) comprises a grip portion (11) and a nozzle mounting opening (12), the grip portion (11) being provided with a ground electrode (111), the atomizer unit (43) being detachably connected to the nozzle mounting opening (12) and a flow channel (42).

10. A hand-held electrostatic atomizer according to claim 9, characterized in that the hand-held housing (1) is provided with a reservoir unit mounting interface, through which reservoir unit mounting interface the reservoir unit (2) is detachably mounted on the hand-held housing (1).

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