Electric mist sprayer

Abstract

The utility model discloses an electric mist sprayer which comprises a liquid storage barrel, a fan and a mist spray gun, the fan is communicated with the mist spray gun through an air pipe; the liquid storage barrel is communicated with the mist spraying gun through a liquid conveying pipe; a hole is formed in the side wall of the mist spray gun; the liquid conveying pipe is communicated with the mist spraying gun through the hole; the liquid conveying pipe is located outside the air pipe. The liquid outlet of the liquid conveying pipe penetrates into the side wall of the mist spray gun and then is communicated with the liquid inlet of the central pipe, the main body of the liquid conveying pipe is always located outside the air pipe, even if the main body of the liquid conveying pipe is damaged, liquid medicine cannot flow to the fan, short circuit of a circuit and damage of components cannot be caused, and electric shock accidents cannot occur. Even if the part, located in the mist spray gun, of the infusion tube is damaged, the mist spray gun is far away from the fan, so that the liquid medicine is not easy to flow to the fan, short circuit of a circuit and damage of components are not easy to cause, and electric shock accidents are not easy to occur.

Description

Technical Field

[0001] The utility model relates to spraying equipment for crops, in particular to an electric misting machine. Background Art

[0002] Authorization announcement date: On December 28, 2018, the authorization announcement number was disclosed: CN208286254U. The utility model name: Patent for electric remote ultra-fine fog machine.

[0003] The electric remote ultra-fine mist machine has an electric fan outlet pipe connected to an air inlet pipe extending into the upper part of the medicine box, and the air inlet of the air inlet pipe is close to the electric fan. Therefore, when the medicine box is shaking or tilted toward the air inlet pipe, the medicine liquid will easily flow in from the air inlet of the air inlet pipe and flow out from the air outlet of the air inlet pipe to the electric fan, causing circuit short circuit, component damage, and even electric shock accidents.

[0004] Since a spray pipe is provided inside the air outlet pipe, one end of the spray pipe is connected to the bottom of the medicine box, and the other end extends to the air outlet of the air outlet pipe. Therefore, when the part of the spray pipe located in the air outlet pipe close to the electric blower is damaged, the medicine will easily flow out from the damaged part and flow to the electric blower, causing circuit short circuit, component damage, and even electric shock accidents.

[0005] Since the medicine box is filled with liquid medicine and the weight of the electric blower, the total weight is very heavy, so whether it is carried by hand or on the back, it will increase the labor intensity of the operator. Utility Model Content

[0006] The technical problem to be solved by the present technical scheme is to provide an electric misting machine, which can make the liquid outlet of the infusion tube penetrate into the side wall of the mist spray gun and then be connected with the liquid inlet of the central tube. The main body of the infusion tube is always located outside the air outlet pipe. Even if the main body of the infusion tube is damaged, the liquid medicine will not flow to the electric fan, causing circuit short circuit, component damage, or electric shock. Even if the part of the infusion tube located in the mist spray gun is damaged, since the mist spray gun is far away from the electric fan, the liquid medicine will not easily flow to the electric fan, causing circuit short circuit, component damage, or electric shock. In order to solve the above technical problems, the present technical scheme provides an electric misting machine.

[0007] It includes a liquid storage barrel, a fan and the mist spray gun;

[0008] The fan is connected to the mist spray gun through an air duct;

[0009] The liquid storage tank is connected to the mist spray gun through a liquid infusion tube;

[0010] The side wall of the mist spray gun is provided with a hole;

[0011] The liquid infusion tube is connected to the mist spray gun via the hole;

[0012] The infusion tube is located outside the air duct.

[0013] Various improvements of this technical solution are described as follows.

[0014] The mist spray gun comprises a rear barrel and a front barrel;

[0015] The hole is arranged on the side wall of the rear barrel;

[0016] The rear gun barrel is in the shape of a cylindrical barrel;

[0017] The outer wall of the rear gun barrel is provided with threads at both ends;

[0018] The front gun barrel is in the shape of a conical barrel;

[0019] The rear end of the front barrel is provided with a flange structure;

[0020] The rear end of the front barrel is sealed and connected to the front end of the rear barrel via a front sealing nut; the rear end of the rear barrel is provided with a rear sealing nut;

[0021] A central tube is provided inside the front barrel;

[0022] The rear end of the central tube extends to the front end of the rear barrel;

[0023] The central tube is connected to the front gun barrel through a rear ventilation support plate and a front ventilation support plate. A handle is provided on the side wall of the rear gun barrel;

[0024] The handle is in an "L" shape;

[0025] The handle is hollow.

[0026] The mist spray gun is equipped with a valve;

[0027] The valve is a push valve or a rotary valve.

[0028] The valve body of the valve is located in the rear barrel;

[0029] The valve handle of the valve extends upward from the side wall of the rear gun barrel;

[0030] The liquid outlet of the valve is connected to the liquid inlet of the central tube;

[0031] The liquid inlet of the valve is connected to the liquid outlet of the connecting pipe;

[0032] The liquid inlet of the connecting pipe passes through the hole and out of the side wall of the rear barrel;

[0033] The side wall of the connecting pipe is sealed and connected to the hole;

[0034] or,

[0035] The valve body of the valve is located in the handle;

[0036] The valve handle of the valve extends forward from the side wall of the handle;

[0037] The hole is in communication with the head of the handle;

[0038] The liquid outlet of the valve is connected to the liquid inlet of the central tube through the first connecting pipe;

[0039] The liquid inlet of the valve is connected to the liquid outlet of the second connecting pipe;

[0040] The liquid inlet of the second connecting pipe extends from the tail of the handle;

[0041] or,

[0042] The valve is located outside the rear barrel;

[0043] The valve is fixed to the outer wall of the rear barrel;

[0044] or,

[0045] The valve is in a free state;

[0046] The liquid outlet of the valve is connected to the liquid inlet of the connecting pipe;

[0047] The liquid outlet of the connecting pipe penetrates into the hole and is connected with the liquid inlet of the central pipe.

[0048] The fan is fixed on the back plate;

[0049] The air outlet of the fan is directed downward, obliquely downward, or horizontally;

[0050] The back panel is provided with two straps;

[0051] The back plate is also fixed with a first pressure switch and a leakage protector;

[0052] The fan is electrically connected to a power plug through the first pressure switch and the leakage protector;

[0053] The leakage protector is provided with a waterproof cover;

[0054] The pressure inlet of the first pressure switch is connected with the liquid inlet of the infusion tube and the liquid outlet of the extended infusion tube through a first three-way connection;

[0055] The liquid inlet of the extended infusion tube is communicated with the liquid storage barrel.

[0056] A lower portion of one side of the liquid storage barrel is indented inwardly to form a control box;

[0057] The control box is provided with a two-way switch, an electric air pump, a relay, a one-way check valve, a pump and a second pressure switch;

[0058] The liquid inlet of the extended infusion tube is connected to the liquid storage barrel through the pump;

[0059] The liquid outlet of the pump and the liquid inlet of the extended infusion tube are connected to the electric air pump through the one-way check valve;

[0060] The liquid outlet of the pump and the liquid inlet of the extended infusion tube are connected through the second three-way one-way check valve;

[0061] The liquid outlet of the pump and the liquid inlet of the extended infusion tube are connected to the pressure inlet of the second pressure switch through a third three-way connection;

[0062] The pump is electrically connected to the bidirectional switch through the second pressure switch and the relay;

[0063] The electric air pump is electrically connected to the bidirectional switch; or,

[0064] The electric air pump is electrically connected to the relay; or,

[0065] The electric air pump is electrically connected to the bidirectional switch and the relay respectively;

[0066] The liquid inlet of the pump is communicated with the filter screen;

[0067] The filter screen is arranged at the bottom of the liquid storage barrel;

[0068] A water level sensing probe is provided at the bottom of the liquid storage barrel;

[0069] The water level sensing probe is electrically connected to the relay;

[0070] A stirring shaft is arranged in the middle of the barrel cover of the liquid storage barrel;

[0071] The stirring shaft is rotatably connected to the barrel cover of the liquid storage barrel;

[0072] A plurality of stirring blades are distributed on the side of the stirring shaft;

[0073] The upper end of the stirring shaft is fixedly connected to the rotating shaft of the motor;

[0074] The casing of the motor is fixedly connected to the barrel cover of the liquid storage barrel.

[0075] The air duct and the infusion tube are fixedly connected via a connector; or,

[0076] The air duct and the liquid infusion tube are bonded together in parallel; or,

[0077] The air duct and the infusion tube are juxtaposed and injection-molded to form an integral piece;

[0078] The air duct is a bellows;

[0079] The infusion tube is a corrugated tube or a hose;

[0080] The connecting piece is a tape, Velcro or a rubber band;

[0081] The liquid outlet of the extended infusion tube is provided with a first quick connector;

[0082] The liquid inlet of the extended infusion tube is provided with a second quick connector;

[0083] The first pressure switch and the second pressure switch are normally closed pressure switches;

[0084] The pump is a diaphragm pump;

[0085] The diaphragm pump is a dual-core diaphragm pump.

[0086] Compared with the prior art, the mist spray gun of this technical solution has the following beneficial effects.

[0087] 1. The technical solution adopts a technical means that a hole is opened in the side wall of the mist spray gun; the infusion tube is connected to the mist spray gun via the hole; the infusion tube is located outside the air duct. Therefore, the electric mist machine can make the liquid outlet of the infusion tube penetrate into the side wall of the mist spray gun and be connected with the liquid inlet of the central tube. The main body of the infusion tube is always located outside the air duct. Even if the main body of the infusion tube is damaged, the medicine will not flow to the fan, and will not cause a short circuit or damage to components, let alone an electric shock accident. Even if the part of the infusion tube located in the mist spray gun is damaged, since the mist spray gun is far away from the fan, the medicine is not easy to flow to the fan, and it is not easy to cause a short circuit or damage to components, let alone an electric shock accident.

[0088] 2. The technical solution adopts a mist spray gun including a rear barrel and a front barrel; the hole is set on the side wall of the rear barrel; the rear barrel is in the shape of a cylindrical barrel; threads are respectively set at both ends of the outer wall of the rear barrel; the front barrel is in the shape of a conical barrel; a flange structure is set at the rear end of the front barrel; the rear end of the front barrel is sealed and connected with the front end of the rear barrel by a front sealing nut, so it is conducive to the connection and installation of the center tube and the infusion tube; since the rear end of the rear barrel is equipped with a rear sealing nut, it is conducive to the connection and installation with the air duct; since the center tube is set inside the front barrel; the rear end of the center tube extends to the front end of the rear barrel; the center tube is connected to the front barrel by a rear ventilation support plate and a front ventilation support plate, so it can ensure that the center tube is coaxial with the front barrel.

[0089] 3. This technical solution adopts a handle provided on the side wall of the rear barrel; the handle is in an "L" shape; the handle is hollow, so it is easy to hold and creates favorable conditions for further improvements later.

[0090] 4. This technical solution uses a mist spray gun equipped with a valve; the valve is a technical means of pressing the valve, so it is beneficial to control the spraying of the liquid medicine.

[0091] 5. This technical solution is conducive to one-handed operation and control because the valve body of the valve is located in the rear barrel; the valve handle of the valve extends upward from the side wall of the rear barrel; the liquid outlet of the valve is connected with the liquid inlet of the central tube; the liquid inlet of the valve is connected with the liquid outlet of the connecting tube; the liquid inlet of the connecting tube passes through the side wall of the rear barrel through the hole; the side wall of the connecting tube is sealed and connected with the hole; the valve body of the valve is located in the handle; the valve handle of the valve extends forward from the side wall of the handle; the hole is connected with the head of the handle; the valve The liquid outlet of the door is connected with the liquid inlet of the central tube through the first connecting tube; the liquid inlet of the valve is connected with the liquid outlet of the second connecting tube; the liquid inlet of the second connecting tube extends from the tail of the handle, so it is more conducive to one-handed operation and control; because the valve is located outside the rear barrel; the valve is fixed on the outer wall of the rear barrel; or the valve is in a free state; the liquid outlet of the valve is connected with the liquid inlet of the connecting tube; the liquid outlet penetration hole of the connecting tube is connected with the liquid inlet of the central tube, so it is simple to manufacture.

[0092] 6. The technical solution adopts the following technical means: the fan is fixed on the back plate; the air outlet of the fan faces downward or obliquely downward or horizontally; the back plate is provided with two shoulder straps; the back plate is also fixed with a first pressure switch and a leakage protector; the fan is electrically connected to the power plug through the first pressure switch and the leakage protector; the leakage protector is provided with a waterproof cover; the pressure inlet of the first pressure switch is connected with the liquid inlet of the infusion tube and the liquid outlet of the extended infusion tube through the first three-way valve; the liquid inlet of the extended infusion tube is connected with the liquid storage barrel, so the liquid storage barrel can be placed in a fixed place, and the operator only needs to carry the back plate for spraying operations. The total weight of the back plate and its load is light, which can greatly reduce the labor intensity of the operator. At the same time, the valve can control the working state of the fan through the first pressure switch, the leakage protector can serve as a switch and leakage protection, and the waterproof cover can prevent the leakage protector from damage.

[0093] 7. The technical solution adopts a control box formed by an inward concave lower part of one side of the liquid storage barrel; a two-way switch, an electric air pump, a relay, a one-way check valve, a pump and a second pressure switch are arranged in the control box; the liquid inlet of the extended infusion tube is connected with the liquid storage barrel through the pump; the liquid outlet of the pump and the liquid inlet of the extended infusion tube are connected with the electric air pump through the one-way check valve; the liquid outlet of the pump and the liquid inlet of the extended infusion tube are connected with the second pressure switch through the second three-way one-way check valve; the liquid outlet of the pump and the liquid inlet of the extended infusion tube are connected with the second pressure switch through the third three-way; the pump is electrically connected to the two-way switch through the second pressure switch and the relay; the electric air pump is electrically connected to the two-way switch; the water level sensing probe is electrically connected to the relay; a stirring shaft is arranged in the middle of the barrel cover of the liquid storage barrel; the stirring shaft is rotatably connected to the barrel cover of the liquid storage barrel; a plurality of stirring blades are distributed on the side of the stirring shaft; the upper end of the stirring shaft is fixedly connected to the rotating shaft of the motor; the casing of the motor is fixedly connected to the barrel cover of the liquid storage barrel Means, so the two-way switch can control the working state of the pump and the working state of the electric air pump. The electric air pump can discharge the medicine remaining in the extended infusion tube and the infusion tube, so as to achieve the purpose of making full use of the medicine; the liquid inlet of the pump is connected with the filter; the filter is arranged at the bottom of the liquid storage barrel; a water level sensing probe is arranged at the bottom of the liquid storage barrel, and the one-way check valve can prevent the medicine from flowing to the electric air pump. When the medicine is used up, the relay can control the pump to stop working, and the valve can control the working state of the pump through the second pressure switch. The filter can not only filter the medicine, but also help the pump to draw out the medicine in the liquid storage barrel as much as possible. When the relay controls the pump to stop working, the electric air pump is started. Through the push of air pressure, the residual medicine in the extended infusion tube and the infusion tube can be discharged and atomized, so as to achieve full use of the medicine. Of course, the electric air pump can also be manually turned on, and the stirring blade can stir the medicine evenly.

[0094] 8. The technical solution adopts the technical means of fixing the air duct and the infusion tube through a connector; or, the air duct and the infusion tube are bonded together in parallel; or, the air duct and the infusion tube are injection molded in parallel to form an integral part; the air duct is a bellows; the infusion tube is a bellows or a hose; the connector is a tape or nylon fastener or a rubber band, so it is easy to carry; the technical means of providing a first quick connector at the outlet of the extended infusion tube; and the technical means of providing a second quick connector at the inlet of the extended infusion tube are adopted, so it is conducive to quick plugging and unplugging; the technical means of adopting the first pressure switch and the second pressure switch are normally closed pressure switches, so when the pressure decreases, the first pressure switch and the second pressure switch can automatically be in the normally closed state; the technical means of adopting the pump is a diaphragm pump; and the diaphragm pump is a dual-core diaphragm pump, so it is conducive to preventing liquid reflux. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] The mist spray gun and the electric mist machine of the utility model are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0096] Figure 1 It is a schematic diagram of the overall structure of the electric fog machine in this embodiment.

[0097] Figure 2 It is a structural schematic diagram of the first type of mist spray gun in this embodiment.

[0098] Figure 3 It is a structural schematic diagram of the second type of mist spray gun in this embodiment.

[0099] Figure 4 It is a schematic structural diagram of the third type of mist spray gun in this embodiment.

[0100] Figure 5 It is a schematic structural diagram of a fourth type of mist spray gun in this embodiment.

[0101] Figure 6 It is a structural schematic diagram of a rear ventilation support plate and a front ventilation support plate.

[0102] The description of the reference numerals is as follows.

[0103] 1~Backboard;

[0104] 2~ Straps;

[0105] 3~Fan;

[0106] 4~Air duct;

[0107] 5. Mist spray gun;

[0108] 6~Connectors;

[0109] 7~Infusion tube;

[0110] 8~First pressure switch;

[0111] 9~First three links;

[0112] 10~First quick connector;

[0113] 11~Second quick connector;

[0114] 12~Extend the infusion tube;

[0115] 13~Leakage protector;

[0116] 14~Waterproof cover;

[0117] 15~Power plug;

[0118] 16~Valve;

[0119] 17~hole;

[0120] 18~Center tube;

[0121] 19~Connecting pipe;

[0122] 20~rear barrel;

[0123] 21~Front barrel;

[0124] 22~rear ventilation support plate;

[0125] 23~Front ventilation support plate;

[0126] 24~rear sealing nut;

[0127] 25~Front sealing nut;

[0128] 26~handle;

[0129] 27~Liquid storage tank;

[0130] 28~Motor;

[0131] 29~Stirring shaft;

[0132] 30~Stirring blade;

[0133] 31~Control box;

[0134] 32~Bidirectional switch;

[0135] 33~Electric air pump;

[0136] 34~Relay;

[0137] 35~One-way check valve;

[0138] 36~Pump;

[0139] 37~Second three-way;

[0140] 38~Filter;

[0141] 39~Water level sensor probe;

[0142] 40~Second pressure switch;

[0143] 41~3rd 3rd;

[0144] 42~Filter. DETAILED DESCRIPTION

[0145] The technical problem to be solved by the present embodiment is to provide an electric mist machine, which can make the liquid outlet of the infusion tube penetrate into the side wall of the mist spray gun and then be connected with the liquid inlet of the central tube. The main body of the infusion tube is always located outside the air duct. Even if the main body of the infusion tube is damaged, the medicine will not flow to the fan, and will not cause circuit short circuit, component damage, or electric shock accidents. Even if the part of the infusion tube located in the mist spray gun is damaged, since the mist spray gun is far away from the fan, the medicine will not easily flow to the fan, and will not easily cause circuit short circuit, component damage, or electric shock accidents.

[0146] like Figure 1 As shown,

[0147] In order to solve the above technical problems, this embodiment provides an electric fog machine.

[0148] It includes a liquid storage tank 27, a fan 3 and a mist spray gun 5;

[0149] The fan 3 is connected to the mist spray gun 5 through the air duct 4;

[0150] The liquid storage barrel 27 is connected to the mist spray gun 5 through the liquid infusion tube 7;

[0151] The side wall of the mist spray gun 5 is provided with a hole 17;

[0152] The liquid infusion tube 7 is connected to the mist spray gun 5 via the hole 17;

[0153] The liquid infusion tube 7 is located outside the air duct 4 .

[0154] In this embodiment, a hole 17 is opened on the side wall of the mist spray gun 5; the infusion tube 7 is connected to the mist spray gun 5 by means of the hole 17; the infusion tube 7 is located outside the air duct 4. Therefore, the electric mist machine can make the liquid outlet of the infusion tube pass through the side wall of the mist spray gun and be connected with the liquid inlet of the central tube. The main body of the infusion tube is always located outside the air duct. Even if the main body of the infusion tube is damaged, the medicine will not flow to the fan, and will not cause a short circuit or damage to components, and will not cause electric shock accidents. Even if the part of the infusion tube located in the mist spray gun is damaged, since the mist spray gun is far away from the fan, the medicine will not easily flow to the fan, and will not easily cause a short circuit or damage to components, and will not cause electric shock accidents.

[0155] Various modifications of this embodiment are described in detail below.

[0156] like Figures 1 to 6 As shown,

[0157] The mist spray gun 5 comprises a rear barrel 20 and a front barrel 21;

[0158] The hole 17 is provided on the side wall of the rear barrel 20;

[0159] The rear gun barrel 20 is in the shape of a cylindrical barrel;

[0160] Both ends of the outer wall of the rear gun barrel 20 are respectively provided with threads;

[0161] The front gun barrel 21 is in the shape of a conical barrel;

[0162] The rear end of the front barrel 21 is provided with a flange structure;

[0163] The rear end of the front barrel 21 is sealed with the front end of the rear barrel 20 via a front sealing nut 25;

[0164] The rear end of the rear barrel 20 is provided with a rear sealing nut 24;

[0165] A center tube 18 is provided inside the front barrel 21;

[0166] The rear end of the center tube 18 extends to the front end of the rear barrel 20;

[0167] The central tube 18 is connected to the front barrel 21 through a rear ventilation support plate 22 and a front ventilation support plate 23 .

[0168] In this embodiment, the mist spray gun 5 includes a rear barrel 20 and a front barrel 21; the hole 17 is arranged on the side wall of the rear barrel 20; the rear barrel 20 is in the shape of a cylindrical barrel; threads are arranged at both ends of the outer wall of the rear barrel 20; the front barrel 21 is in the shape of a conical barrel; a flange structure is arranged at the rear end of the front barrel 21; the rear end of the front barrel 21 is sealed and connected with the front end of the rear barrel 20 by a front sealing nut 25, so it is conducive to the connection and installation of the center tube 18 with the infusion tube 7; since the rear end of the rear barrel 20 is equipped with a rear sealing nut 24, it is conducive to the connection and installation with the air duct; since the center tube 18 is arranged inside the front barrel 21; the rear end of the center tube 18 extends to the front end of the rear barrel 20; the center tube 18 is connected to the front barrel 21 by a rear ventilation support plate 22 and a front ventilation support plate 23, so it can be ensured that the center tube 18 is coaxially arranged with the front barrel 21.

[0169] like Figures 1 to 6 As shown,

[0170] A handle 26 is provided on the side wall of the rear barrel 20;

[0171] The handle 26 is in an "L" shape;

[0172] The handle 26 is hollow.

[0173] In this embodiment, the side wall of the rear barrel 20 is provided with a handle 26; the handle 26 is in an "L" shape; the handle 26 is hollow, so it is easy to hold and creates favorable conditions for further improvements later.

[0174] like Figures 1 to 5 As shown,

[0175] The mist spray gun 5 is provided with a valve 16;

[0176] The valve 16 is a push valve or a rotary valve.

[0177] In this embodiment, since the mist spray gun 5 is equipped with a valve 16; the valve 16 is a technical means of pressing the valve, it is beneficial to control the spraying of the liquid medicine.

[0178] like Figures 1 to 5 As shown,

[0179] See also Figure 3 , the valve body of the valve 16 is located in the rear barrel 20;

[0180] The valve handle of the valve 16 extends upwardly out of the side wall of the rear barrel 20;

[0181] The liquid outlet of the valve 16 is connected to the liquid inlet of the central tube 18;

[0182] The liquid inlet of the valve 16 is connected to the liquid outlet of the connecting pipe 19;

[0183] The liquid inlet of the connecting pipe 19 passes through the side wall of the rear barrel 20 through the hole 17;

[0184] The side wall of the connecting pipe 19 is sealedly connected to the hole 17;

[0185] Of course, it could also be,

[0186] See also Figure 4 , the valve body of the valve 16 is located in the handle 26;

[0187] The valve handle of the valve 16 extends forwardly out of the side wall of the handle 26;

[0188] The hole 17 is in communication with the head of the handle 26;

[0189] The liquid outlet of the valve 16 is connected to the liquid inlet of the central tube 18 through the first connecting pipe 19;

[0190] The liquid inlet of the valve 16 is connected to the liquid outlet of the second connecting pipe 19;

[0191] The liquid inlet of the second connecting pipe 19 extends from the rear end of the handle 26;

[0192] It can also be,

[0193] See also Figure 1 to Figure 2 and Figure 5 , the valve 16 is located outside the rear barrel 20;

[0194] The valve 16 is fixed to the outer wall of the rear barrel 20;

[0195] Of course, it could also be,

[0196] Valve 16 is in a free state;

[0197] The liquid outlet of the valve 16 is connected to the liquid inlet of the connecting pipe 19;

[0198] The liquid outlet of the connecting tube 19 penetrates the hole 17 and is connected with the liquid inlet of the central tube 18 .

[0199] This embodiment adopts the technical means that the valve body of the valve 16 is located in the rear barrel 20; the valve handle of the valve 16 extends upward from the side wall of the rear barrel 20; the liquid outlet of the valve 16 is connected with the liquid inlet of the central tube 18; the liquid inlet of the valve 16 is connected with the liquid outlet of the connecting tube 19; the liquid inlet of the connecting tube 19 passes through the side wall of the rear barrel 20 through the hole 17; the side wall of the connecting tube 19 is sealed and connected with the hole 17, so it is conducive to single-handed operation and control; the valve body of the valve 16 is located in the handle 26; the valve handle of the valve 16 extends forward from the side wall of the handle 26; the hole 17 is connected with the head of the handle 26; The liquid outlet of the valve 16 is connected with the liquid inlet of the central tube 18 through the first connecting tube 19; the liquid inlet of the valve 16 is connected with the liquid outlet of the second connecting tube 19; the liquid inlet of the second connecting tube 19 extends from the tail of the handle 26, so it is more conducive to one-handed operation and control; because the valve 16 is located outside the rear barrel 20; the valve 16 is fixed to the outer wall of the rear barrel 20; or the valve 16 is in a free state; the liquid outlet of the valve 16 is connected with the liquid inlet of the connecting tube 19; the liquid outlet of the connecting tube 19 is connected with the liquid inlet of the central tube 18 through the hole 17, so it is simple to manufacture.

[0200] like Figure 1 As shown,

[0201] The fan 3 is fixed on the back plate 1;

[0202] The air outlet of the fan 3 is downward, obliquely downward, or horizontally;

[0203] The back panel 1 is provided with two straps 2;

[0204] The back plate 1 is also fixed with a first pressure switch 8 and a leakage protector 13;

[0205] The fan 3 is electrically connected to the power plug 15 through the first pressure switch 8 and the leakage protector 13;

[0206] The leakage protector 13 is provided with a waterproof cover 14;

[0207] The pressure inlet of the first pressure switch 8 is connected to the liquid inlet of the infusion tube 7 and the liquid outlet of the extended infusion tube 12 through the first three-way connection 9;

[0208] The liquid inlet of the extended infusion tube 12 is communicated with the liquid storage barrel 27 .

[0209] In this embodiment, the fan 3 is fixed on the back plate 1; the air outlet of the fan 3 faces downward or obliquely downward or horizontally; the back plate 1 is provided with two straps 2; the back plate 1 is also fixed with a first pressure switch 8 and a leakage protector 13; the fan 3 is electrically connected to the power plug 15 through the first pressure switch 8 and the leakage protector 13; the leakage protector 13 is provided with a waterproof cover 14; the pressure inlet of the first pressure switch 8 is connected with the liquid inlet of the infusion tube 7 and the liquid outlet of the extended infusion tube 12 through the first three-way 9; the liquid inlet of the extended infusion tube 12 is connected with the liquid storage barrel 27, so the liquid storage barrel 27 can be placed in a fixed place, and the operator only needs to carry the back plate 1 for spraying operations. The total weight of the back plate 1 and its load is light, which can greatly reduce the labor intensity of the operator. At the same time, the valve 16 can control the working state of the fan 3 through the first pressure switch 8, the leakage protector 13 can also serve as a switch and leakage protection, and the waterproof cover 14 can prevent the leakage protector 13 from being damaged.

[0210] like Figure 1 As shown,

[0211] The lower part of one side of the liquid storage barrel 27 is indented inward to form a control box 31;

[0212] The control box 31 is provided with a two-way switch 32, an electric air pump 33, a relay 34, a one-way check valve 35, a pump 36 and a second pressure switch 40;

[0213] The liquid inlet of the extended infusion tube 12 is connected to the liquid storage barrel 27 through the pump 36;

[0214] The liquid outlet of the pump 36 and the liquid inlet of the extended infusion tube 12 are connected to the electric air pump 33 through a one-way check valve 35;

[0215] The liquid outlet of the pump 36 and the liquid inlet of the extended infusion tube 12 are connected through a second three-way non-return valve 35;

[0216] The liquid outlet of the pump 36 and the liquid inlet of the extended infusion tube 12 are connected to the pressure inlet of the second pressure switch 40 through the third three-way connection 41;

[0217] Relay 34 is an intermediate relay;

[0218] The pump 36 is electrically connected to the two-way switch 32 via the second pressure switch 40 and the relay 34 (normally closed contact);

[0219] The electric air pump 33 is electrically connected to the two-way switch 32;

[0220] Of course, it could also be,

[0221] The electric air pump 33 is electrically connected to the relay 34 (normally open contact);

[0222] It can also be,

[0223] The electric air pump 33 is electrically connected to the two-way switch 32 and the relay 34 (normally open contact) respectively;

[0224] The liquid inlet of the pump 36 is connected to the filter screen 38;

[0225] The filter screen 38 is arranged at the bottom of the liquid storage barrel 27;

[0226] A water level sensing probe 39 is provided at the bottom of the liquid storage barrel 27;

[0227] The water level sensing probe 39 is electrically connected to the relay 34;

[0228] A stirring shaft 29 is provided in the middle of the barrel cover of the liquid storage barrel 27;

[0229] The stirring shaft 29 is rotatably connected to the barrel cover of the liquid storage barrel 27;

[0230] A plurality of stirring blades 30 are distributed on the side of the stirring shaft 29;

[0231] The upper end of the stirring shaft 29 is fixedly connected to the rotating shaft of the motor 28;

[0232] The housing of the motor 28 is fixedly connected to the cover of the liquid storage barrel 27 .

[0233] In this embodiment, the lower part of one side of the liquid storage barrel 27 is recessed inward to form a control box 31; a two-way switch 32, an electric air pump 33, a relay 34, a one-way check valve 35, a pump 36 and a second pressure switch 40 are arranged in the control box 31; the liquid inlet of the extended infusion tube 12 is connected to the liquid storage barrel 27 through the pump 36; the liquid outlet of the pump 36 and the liquid inlet of the extended infusion tube 12 are connected to the electric air pump 33 through the one-way check valve 35; the liquid outlet of the pump 36 and the liquid inlet of the extended infusion tube 12 are connected through the second three-way check valve 37; the liquid outlet of the pump 36 and the liquid inlet of the extended infusion tube 12 are connected The liquid inlet of the infusion tube 12 is connected to the second pressure switch 40 through the third three-way connection 41; the pump 36 is electrically connected to the two-way switch 32 through the second pressure switch 40 and the relay 34; the electric air pump 33 is electrically connected to the two-way switch 3; or, the electric air pump 33 is electrically connected to the relay 34; or, the electric air pump 33 is electrically connected to the two-way switch 32 and the relay 34 respectively; the water level sensor probe 39 is electrically connected to the relay 34; a stirring shaft 29 is provided in the middle of the barrel cover of the liquid storage barrel 27; the stirring shaft 29 is rotatably connected to the barrel cover of the liquid storage barrel 27; a plurality of stirring blades 30 are distributed on the side of the stirring shaft 29 ; The upper end of the stirring shaft 29 is fixedly connected to the rotating shaft of the motor 28; the casing of the motor 28 is fixedly connected to the barrel cover of the liquid storage barrel 27, so the two-way switch 32 can control the working state of the pump 36 and the working state of the electric air pump 33. The electric air pump 33 can discharge the medicine remaining in the extended infusion tube 12 and the infusion tube 7, so as to achieve the purpose of fully utilizing the medicine; the liquid inlet of the pump 36 is connected to the filter screen 38; the filter screen 38 is arranged at the bottom of the liquid storage barrel 27; the bottom of the liquid storage barrel 27 is provided with a water level sensing probe 39, a one-way check valve 35 can prevent the medicine liquid from flowing to the electric air pump 33. When the medicine liquid is used up, the relay 34 can control the pump 36 to stop working according to the signal of the water level sensing probe 39. The valve 16 can control the working state of the pump 36 through the second pressure switch 40. The filter 38 can not only filter the medicine liquid, but also help the pump 36 to drain the medicine liquid in the liquid storage barrel 27 as much as possible. When the relay 34 controls the pump 36 to stop working, the electric air pump 33 can be started. Through the push of air pressure, the residual medicine liquid in the extended infusion tube 12 and the infusion tube 7 can be discharged and atomized, so as to realize the full utilization of the medicine liquid.

[0234] like Figure 1 As shown,

[0235] The air duct 4 and the infusion tube 7 are fixedly connected by a connector 6; or,

[0236] The air duct 4 and the liquid infusion tube 7 are bonded together in parallel; or,

[0237] The air duct 4 and the liquid infusion tube 7 are juxtaposed and injection-molded to form an integral part;

[0238] The air duct 4 is a corrugated tube;

[0239] The infusion tube 7 is a corrugated tube or a hose;

[0240] The connecting member 6 is a tape or a Velcro or a rubber band;

[0241] The liquid outlet of the extended infusion tube 12 is provided with a first quick connector 10;

[0242] The liquid inlet of the extended infusion tube 12 is provided with a second quick connector 11;

[0243] The first pressure switch 8 and the second pressure switch 40 are normally closed pressure switches;

[0244] Pump 36 is a diaphragm pump;

[0245] The diaphragm pump is a dual-core diaphragm pump;

[0246] The air inlet of the fan 3 is provided with a filter screen 42 .

[0247] In this embodiment, the air duct 4 and the infusion tube 7 are fixedly connected by a connector 6; or, the air duct 4 and the infusion tube 7 are bonded together in parallel; or, the air duct 4 and the infusion tube 7 are injection molded in parallel to form an integral part; the air duct 4 is a bellows; the infusion tube 7 is a bellows or a hose; the connector 6 is a tape or nylon fastener or a rubber band, so it is easy to carry; since the liquid outlet of the extended infusion tube 12 is provided with a first quick connector 10; the liquid inlet of the extended infusion tube 12 is provided with a second quick connector 11, it is conducive to quick plugging and unplugging; since the first pressure switch 8 and the second pressure switch 40 are normally closed pressure switches, when the pressure decreases, the first pressure switch and the second pressure switch can automatically be in a normally closed state; since the pump 36 is a diaphragm pump; the diaphragm pump is a dual-core diaphragm pump, it is conducive to preventing liquid reflux. Since the air inlet of the fan 3 is provided with a filter 42, it is helpful to prevent debris from entering the fan.

[0248] The atomization principle is as follows.

[0249] The liquid medicine flows from the liquid storage tank 27 to the mist spray gun 5 under the action of pressure. At the same time, the high-speed airflow generated by the fan 3 passes through the mist spray gun 5 and mixes with the pressurized liquid medicine. Under the action of high speed and high pressure, the liquid medicine is broken into tiny droplets.

Claims

1. An electric mist machine, It comprises a liquid storage barrel (27), a fan (3) and a mist spray gun (5); The fan (3) is connected to the mist spray gun (5) through an air duct (4); The liquid storage barrel (27) is connected to the mist spray gun (5) through a liquid infusion tube (7); Features: The side wall of the mist spray gun (5) is provided with a hole (17); The liquid infusion tube (7) is connected to the mist spray gun (5) via the hole (17); The liquid infusion tube (7) is located outside the air duct (4).

2. The electric misting machine according to claim 1, Features: The mist spray gun (5) comprises a rear gun barrel (20) and a front gun barrel (21); The rear gun barrel (20) is in the shape of a cylindrical barrel; The front gun barrel (21) is in the shape of a conical barrel; The hole (17) is arranged on the side wall of the rear barrel (20); Both ends of the outer wall of the rear gun barrel (20) are respectively provided with threads; The rear end of the front gun barrel (21) is provided with a flange structure; The rear end of the front gun barrel (21) and the front end of the rear gun barrel (20) are sealed and connected via a front sealing nut (25); The rear end of the rear gun barrel (20) is provided with a rear sealing nut (24); A central tube (18) is provided inside the front gun barrel (21); The rear end of the central tube (18) extends to the front end of the rear barrel (20); The central tube (18) is connected to the front gun barrel (21) via a rear ventilation support plate (22) and a front ventilation support plate (23).

3. The electric misting machine according to claim 2, Features: The side wall of the rear gun barrel (20) is provided with a handle (26); The handle (26) is in an "L" shape; The handle (26) is hollow.

4. The electric misting machine according to claim 3, Features: The mist spray gun (5) is provided with a valve (16); The valve (16) is a push valve or a rotating valve.

5. The electric misting machine according to claim 4, Features: The valve body of the valve (16) is located in the rear barrel (20); or, The valve body of the valve (16) is located inside the handle (26); or, The valve (16) is located outside the rear barrel (20).

6. The electric misting machine according to claim 5, Features: The fan (3) is fixed on the back plate (1); The air outlet of the fan (3) is directed downward, obliquely downward, or horizontally; The back panel (1) is provided with two shoulder straps (2); The back plate (1) is also fixed with a first pressure switch (8) and a leakage protector (13); The fan (3) is electrically connected to a power plug (15) via the first pressure switch (8) and the leakage protector (13); The leakage protector (13) is provided with a waterproof cover (14).

7. The electric misting machine according to claim 6, Features: A lower portion of one side of the liquid storage barrel (27) is indented inwardly to form a control box (31); The control box (31) is provided with a two-way switch (32), an electric air pump (33), a relay (34), a one-way check valve (35), a pump (36) and a second pressure switch (40); The liquid inlet of the extended infusion tube (12) is connected to the liquid storage barrel (27) through the pump (36); The liquid outlet of the pump (36) and the liquid inlet of the extended infusion tube (12) are connected to the electric air pump (33) through the one-way check valve (35); The pump (36) is electrically connected to the bidirectional switch (32) via the second pressure switch (40) and the relay (34); The electric air pump (33) is electrically connected to the bidirectional switch (32); or, The electric air pump (33) is electrically connected to the relay (34); or, The electric air pump (33) is electrically connected to the bidirectional switch (32) and the relay (34) respectively; The liquid inlet of the pump (36) is in communication with the filter screen (38); The filter screen (38) is arranged at the bottommost surface of the liquid storage barrel (27); A water level sensing probe (39) is provided at the bottom of the liquid storage barrel (27); The water level sensing probe (39) is electrically connected to the relay (34).

8. The electric misting machine according to claim 7, Features: The air duct (4) and the liquid infusion tube (7) are fixedly connected via a connector (6); or, The air duct (4) and the liquid infusion tube (7) are bonded together in parallel; or, The air duct (4) and the liquid infusion tube (7) are juxtaposed and injection-molded to form an integral part.

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