A portable spray device

Abstract

The present invention relates to the technical field of spray devices, specifically to a portable spray device, including a connecting frame, on which a driving member, a fan and a storage container are arranged. The beneficial effects of the present invention are as follows: after a clean water test spray is performed to check whether each connection is leaking, it is convenient to clean out the clean water remaining in the connecting water pipe, avoiding the situation that the concentration of the sprayed liquid is low during the initial period of spraying when the liquid medicine is first loaded, thereby ensuring the control effect of pests and diseases, and after the spraying of the liquid medicine is completed, it is convenient to clean out the liquid medicine remaining in the connecting water pipe, avoiding the liquid medicine remaining in the connecting water pipe affecting the next use, and at the same time avoiding the evaporation of water in the remaining part of the liquid medicine in the connecting water pipe when the spray device is not used in a short period of time, and the precipitated drug crystals in the connecting water pipe, and even attached to the nozzle, affecting the flow of the liquid medicine during the next use, and even blocking the nozzle, resulting in a situation where the spraying cannot be performed.

Description

Technical Field

[0001] The invention relates to the technical field of spray devices, and in particular to a portable spray device. Background Art

[0002] In the daily process of forestry pest control, spray devices are often needed. Spray devices are commonly used plant protection equipment, mainly used for spraying pesticides, disinfectants or water.

[0003] The portable spray device with a supporting frame disclosed in Chinese patent CN104971843B includes a supporting frame, a blower unit and a storage container for sprayed material, wherein a first upper unit with the storage container and a second lower unit with the blower unit are held on the supporting frame, and the first upper unit and the second lower unit have a spacing from each other in the vertical direction of the supporting frame, wherein the spacing is selected so that a movement gap is formed between the first upper unit and the second lower unit, and a damping stop element is arranged on one of the first upper unit and the second lower unit, which limits the movement gap and the damping stop element arranged on the one of the first upper unit and the second lower unit damps the elastic deflection of the first upper unit by abutting against the other of the first upper unit and the second lower unit.

[0004] However, by comparing the prior art and the comparative scheme, it can be seen that the portable spray device with a support frame and the existing spray device still have the following problems in actual use:

[0005] Before using the spray device, you need to add some clean water to the storage container for a test spray, check whether there are leaks at each connection, and after ensuring that there are no leaks at each connection, add water and liquid medicine to the storage container of the spray device, and then spray. During the test spray, the water pipe between the storage container and the nozzle will be filled with clean water, so that when the liquid medicine is first loaded, the concentration of the sprayed liquid medicine is low during the initial period of spraying, which affects the control effect of pests and diseases. At the same time, after the work is completed, the storage container needs to be cleaned to avoid the residual liquid medicine in the storage container affecting the concentration of the mixed liquid medicine next time, and some liquid medicine will remain in the water pipe between the storage container and the nozzle, affecting the next use. If the spray device is not used in a short period of time, the water in the remaining liquid medicine in the water pipe between the storage container and the nozzle will evaporate, and the drug crystals precipitated after the water in the liquid medicine evaporates will adhere to the water pipe between the storage container and the nozzle, and even to the nozzle, which will affect the flow of the liquid medicine the next time it is used, and even block the nozzle, resulting in a situation where the spray cannot be sprayed. Summary of the invention

[0006] The present invention provides a portable spray device to solve the above technical problems.

[0007] A portable spray device of the present invention adopts the following technical scheme: comprising a connecting frame, on which a driving member, a fan and a storage container are arranged, the fan is arranged at the output end of the driving member, a shoulder strap is arranged on the side of the connecting frame away from the fan, an air duct is arranged at the output end of the fan, a control handle is arranged on the air duct, a connecting water pipe is arranged on the storage container, a connecting member is arranged at one end of the connecting water pipe, the connecting water pipe is connected to the storage container through the connecting member, a switch valve is arranged on the connecting water pipe, a clamp is arranged on the switch valve, the switch valve is connected to the air duct through the clamp, and a spray mechanism is arranged at one end of the connecting water pipe away from the connecting member;

[0008] The spray mechanism includes a connecting component, on which an auxiliary component, a flow regulating component and a spray head are arranged;

[0009] The auxiliary component comprises a connection cover, a sealing member and an air inlet member are arranged on the connection cover, an adjusting member is arranged on the sealing member, and the adjusting member is slidably connected with the air inlet member;

[0010] The adjusting member includes a sliding rod, an adjusting head is provided at one end of the sliding rod, a clamping block is provided on the adjusting head, a spline shaft is provided at the end of the sliding rod away from the adjusting head, a second limit block is provided at the end of the spline shaft close to the sliding rod, a third limit block is provided at the end of the spline shaft away from the second limit block, and a second elastic member is provided on the third limit block.

[0011] Furthermore, a top cover is provided on the top of the storage container, a drainage pipe is provided on the bottom of the storage container, an air inlet pipe is provided on the bottom of the storage container, a stabilizing frame is provided inside the storage container, an air distribution pipe is provided on the stabilizing frame, a first connecting pipe is provided between the air distribution pipe and the air inlet pipe, a water outlet pipe is provided inside the storage container, and a first threaded pipe is provided at one end of the water outlet pipe.

[0012] Furthermore, the connecting piece includes a rotating tube, which is rotatably connected to one end of the connecting water pipe, a one-way air intake valve is arranged on the rotating tube, a first through hole is opened at the end of the rotating tube away from the connecting water pipe, a connecting ring is rotatably connected to the end of the rotating tube away from the connecting water pipe, the connecting ring is threadedly connected to the first threaded tube, a baffle is arranged at one end of the connecting ring close to the rotating tube, a second through hole is opened on the baffle, and the position of the second through hole corresponds to the position of the first through hole.

[0013] Furthermore, the connecting assembly includes a sleeve, which is arranged at one end of the air duct away from the fan, a second connecting pipe is arranged on the sleeve, a third connecting pipe is arranged at one end of the second connecting pipe, the third connecting pipe is arranged inside the sleeve, a fourth connecting pipe and a second threaded pipe are arranged on the second connecting pipe, an end of the connecting water pipe away from the rotating pipe is connected to the fourth connecting pipe, and a spray hood is arranged at one end of the sleeve.

[0014] Furthermore, the connection cover is threadedly connected to the second threaded tube, an air inlet hole and a connection hole are provided on the connection cover, and a connection groove is provided inside the connection cover.

[0015] Furthermore, the sealing member includes a sliding tube, which is slidably connected to the connecting cover through a connecting hole, a sealing plate is provided at one end of the sliding tube, a first limit block is provided at the end of the sliding tube away from the sealing plate, a first elastic member is provided on the first limit block, the first elastic member is provided between the first limit block and the connecting cover, a sliding hole, a first slot and a second slot are provided on the first limit block, the sliding hole passes through the first limit block, the sliding tube and the sealing plate, and the sliding rod is slidably connected to the first limit block, the sliding tube and the sealing plate through the sliding hole.

[0016] Furthermore, the air inlet component includes a ventilation pipe, which is provided with a ventilation hole. The position of the block corresponds to the position of the ventilation hole. A swivel and a hollow frame are provided at one end of the ventilation pipe. The swivel is provided inside the connecting groove. The ventilation pipe is rotatably connected to the connecting cover through the swivel. The second elastic component is provided between the third limit block and the hollow frame. A spline hole is provided on the hollow frame. The spline shaft is slidably connected to the hollow frame through the spline hole.

[0017] Furthermore, the flow regulating assembly includes a regulating tube, which is rotatably connected to the inside of the second connecting tube, a knob is provided at one end of the regulating tube, and an regulating hole is opened on the regulating tube.

[0018] Furthermore, the nozzle is arranged at one end of the third connecting pipe away from the second connecting pipe, and a rotating shaft is arranged on the nozzle, on which the first impeller and the second impeller are rotatably connected, and the inclination direction of the blades on the first impeller is opposite to the inclination direction of the blades on the second impeller.

[0019] Furthermore, there are multiple adjustment holes, which are distributed in a circular array on the adjustment tube, and the radius of the multiple adjustment holes gradually decreases, and the positions of the adjustment holes correspond to the position of the fourth connecting tube.

[0020] The beneficial effects of the present invention are as follows: after testing with clean water to check whether there are leaks at each connection, it is convenient to clean out the clean water remaining in the connecting water pipe, so as to avoid the situation in which the concentration of the sprayed medicine is low during the initial period of spraying when the medicine is first loaded, thereby ensuring the control effect of pests and diseases; after the spraying of the medicine is completed, it is convenient to clean out the remaining medicine in the connecting water pipe, so as to avoid the remaining medicine in the connecting water pipe affecting the next use; and at the same time, when the spray device is not used in a short period of time, it is avoided that the water in the remaining part of the medicine in the connecting water pipe evaporates, the precipitated medicine crystals in the connecting water pipe, and even adheres to the nozzle, affecting the flow of the medicine during the next use, and even clogging the nozzle, resulting in a situation in which the spraying cannot be performed.

[0021] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of a first viewing angle of an embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a second viewing angle of an embodiment of the present invention;

[0025] Figure 3 It is a schematic cross-sectional structural diagram of a storage container according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of connecting water pipes according to an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the disassembled structure of the connecting piece according to an embodiment of the present invention;

[0028] Figure 6 It is a schematic cross-sectional structure diagram of the spray mechanism of an embodiment of the present invention from a first viewing angle;

[0029] Figure 7 It is a structural schematic diagram of the spray mechanism of an embodiment of the present invention in a first state at a second viewing angle;

[0030] Figure 8 It is a structural schematic diagram of the spray mechanism of an embodiment of the present invention in a second state at a second viewing angle;

[0031] Fig. 9 It is a schematic cross-sectional structural diagram of a connection assembly according to an embodiment of the present invention;

[0032] Fig.10 It is a cross-sectional structural schematic diagram of an auxiliary component of an embodiment of the present invention;

[0033] Fig.11 It is a schematic cross-sectional structural diagram of a connection cover according to an embodiment of the present invention;

[0034] Fig.12 It is a schematic structural diagram of a sealing member according to an embodiment of the present invention;

[0035] Fig.13 It is a schematic structural diagram of an air intake member according to an embodiment of the present invention;

[0036] Fig.14It is a structural schematic diagram of the adjusting member of an embodiment of the present invention from a first viewing angle;

[0037] Fig.15 It is a structural schematic diagram of the adjusting member of the embodiment of the present invention from a second viewing angle;

[0038] Fig.16 It is a schematic structural diagram of a flow regulating assembly according to an embodiment of the present invention;

[0039] Fig.17 Schematic diagram of the structure of the nozzle according to the embodiment of the present invention.

[0040] In the figure: 1, connecting frame; 2, driving member; 3, fan; 4, storage container; 401, top cover; 402, drain pipe; 403, air inlet pipe; 404, stabilizing frame; 405, air distribution pipe; 406, first connecting pipe; 407, water outlet pipe; 408, first threaded pipe; 5, shoulder strap; 6, air duct; 7, control handle; 8, connecting water pipe; 9, connecting member; 901, rotating pipe; 902, one-way air inlet valve; 903, first through hole; 904, connecting ring; 905, baffle; 906, second through hole; 10, switch valve; 11, clamp; 12, spray mechanism; 13, connecting assembly; 131, sleeve; 132, second connecting pipe; 133, third connecting pipe; 134, fourth connecting pipe; 135, second threaded pipe; 136, spray cover; 14, auxiliary assembly; 15, flow Quantity adjustment component; 151, adjustment tube; 152, knob; 153, adjustment hole; 16, nozzle; 161, shaft; 162, first impeller; 163, second impeller; 17, connecting cover; 171, air inlet; 172, connecting hole; 173, connecting groove; 18, sealing member; 181, slide tube; 182, sealing plate; 183, first limit block; 184, first elastic member; 18 5. Slide hole; 186. First card slot; 187. Second card slot; 19. Air inlet; 191. Air pipe; 192. Air hole; 193. Swivel; 194. Hollow frame; 195. Spline hole; 20. Adjustment member; 201. Slide rod; 202. Adjustment head; 203. Block; 204. Spline shaft; 205. Second limit block; 206. Third limit block; 207. Second elastic member. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] An embodiment of a portable spray device of the present invention, as Figure 1 , Figure 2 and Figure 4 As shown, it includes a connecting frame 1, on which a driving member 2, a fan 3 and a storage container 4 are arranged, the fan 3 is arranged at the output end of the driving member 2, a shoulder strap 5 is arranged on the side of the connecting frame 1 away from the fan 3, an air duct 6 is arranged at the output end of the fan 3, a control handle 7 is arranged on the air duct 6, a connecting water pipe 8 is arranged on the storage container 4, a connecting member 9 is arranged at one end of the connecting water pipe 8, the connecting water pipe 8 is connected to the storage container 4 through the connecting member 9, a switch valve 10 is arranged on the connecting water pipe 8, a clamp 11 is arranged on the switch valve 10, the switch valve 10 is connected to the air duct 6 through the clamp 11, and a spray mechanism 12 is arranged at the end of the connecting water pipe 8 away from the connecting member 9.

[0043] like Figure 3 As shown, a top cover 401 is provided on the top of the storage container 4, a drain pipe 402 is provided on the bottom of the storage container 4, a valve is provided on the drain pipe 402, an air inlet pipe 403 is provided on the bottom of the storage container 4, a stabilizing frame 404 is provided inside the storage container 4, an air distribution pipe 405 is provided on the stabilizing frame 404, a first connecting pipe 406 is provided between the air distribution pipe 405 and the air inlet pipe 403, a water outlet pipe 407 is provided inside the storage container 4, a first threaded pipe 408 is provided at one end of the water outlet pipe 407, the first threaded pipe 408 is provided on the outside of the storage container 4, and one end of the water outlet pipe 407 away from the first threaded pipe 408 is close to the bottom of the storage container 4.

[0044] like Figure 2 and Figure 5 As shown, the connecting member 9 includes a rotating tube 901, a one-way air intake valve 902, a first through hole 903, a connecting ring 904, a baffle 905 and a second through hole 906. The rotating tube 901 is rotatably connected to one end of the connecting water pipe 8, the rotating tube 901 is provided with a one-way air intake valve 902, the first through hole 903 is provided at the end of the rotating tube 901 away from the connecting water pipe 8, the connecting ring 904 is rotatably connected to the end of the rotating tube 901 away from the connecting water pipe 8, the connecting ring 904 is threadedly connected to the first threaded tube 408, the connecting ring 904 is provided with a baffle 905 at one end close to the rotating tube 901, the baffle 905 is provided with a second through hole 906, and the position of the second through hole 906 corresponds to the position of the first through hole 903.

[0045] like Figures 6 to 8 As shown, the spray mechanism 12 includes a connecting component 13, an auxiliary component 14, a flow regulating component 15 and a nozzle 16, and the connecting component 13 is provided with the auxiliary component 14, the flow regulating component 15 and the nozzle 16.

[0046] like Figure 4 and Fig. 9As shown, the connecting assembly 13 includes a sleeve 131, a second connecting pipe 132, a third connecting pipe 133, a fourth connecting pipe 134, a second threaded pipe 135 and a spray hood 136. The sleeve 131 is arranged at the end of the air duct 6 away from the fan 3, the second connecting pipe 132 is arranged on the sleeve 131, the third connecting pipe 133 is arranged at one end of the second connecting pipe 132, the third connecting pipe 133 is arranged inside the sleeve 131, the fourth connecting pipe 134 and the second threaded pipe 135 are arranged on the second connecting pipe 132, the end of the connecting water pipe 8 away from the rotating tube 901 is connected to the fourth connecting pipe 134, and a spray hood 136 is arranged at one end of the sleeve 131.

[0047] like Fig.10 As shown, the auxiliary component 14 includes a connecting cover 17, a sealing member 18, an air inlet member 19 and an adjusting member 20. The connecting cover 17 is provided with the sealing member 18 and the air inlet member 19. The sealing member 18 is provided with the adjusting member 20. The adjusting member 20 is slidably connected to the air inlet member 19.

[0048] like Figure 7 , Fig. 9 and Fig.11 As shown, the connection cover 17 is threadedly connected to the second threaded tube 135 , an air inlet hole 171 and a connection hole 172 are formed on the connection cover 17 , and a connection groove 173 is formed inside the connection cover 17 .

[0049] like Figures 10 to 12 As shown, the sealing member 18 includes a sliding tube 181, a sealing plate 182, a first limit block 183, a first elastic member 184, a sliding hole 185, a first card slot 186 and a second card slot 187. The sliding tube 181 is slidably connected to the connecting cover 17 through the connecting hole 172. A sealing plate 182 is provided at one end of the sliding tube 181. A first limit block 183 is provided at one end of the sliding tube 181 away from the sealing plate 182. The first limit block 183 is provided with a first elastic member 184. The first elastic member 184 is arranged between the first limit block 183 and the connecting cover 17. The first limit block 183 is provided with a sliding hole 185, a first card slot 186 and a second card slot 187. The sliding hole 185 runs through the first limit block 183, the sliding tube 181 and the sealing plate 182.

[0050] like Fig.10 , Fig.11 and Fig.13 As shown, the air inlet member 19 includes a vent pipe 191, a vent hole 192, a swivel 193, a hollow frame 194 and a spline hole 195. The vent pipe 191 is provided with a vent hole 192. A swivel 193 and a hollow frame 194 are provided at one end of the vent pipe 191. The swivel 193 is arranged inside the connecting groove 173. The vent pipe 191 is rotatably connected to the connecting cover 17 through the swivel 193. The hollow frame 194 is provided with a spline hole 195.

[0051] like Figures 10 to 15 As shown, the adjusting member 20 includes a slide bar 201, an adjusting head 202, a block 203, a spline shaft 204, a second limit block 205, a third limit block 206 and a second elastic member 207. The slide bar 201 is slidably connected with the first limit block 183, the slide tube 181 and the sealing plate 182 through the slide hole 185. An adjusting head 202 is provided at one end of the slide bar 201, and a block 203 is provided on the adjusting head 202. The position of the block 203 corresponds to the position of the vent hole 192. A spline shaft 204 is provided at the end of 201 away from the adjusting head 202, and the spline shaft 204 is slidably connected to the hollow frame 194 through the spline hole 195. A second limit block 205 is provided at the end of the spline shaft 204 close to the sliding rod 201, and a third limit block 206 is provided at the end of the spline shaft 204 away from the second limit block 205. A second elastic member 207 is provided on the third limit block 206, and the second elastic member 207 is arranged between the third limit block 206 and the hollow frame 194.

[0052] like Figures 6 to 9 , Fig.16 As shown, the flow regulating assembly 15 includes a regulating tube 151, a knob 152 and an regulating hole 153. The regulating tube 151 is rotatably connected to the inside of the second connecting tube 132. A knob 152 is provided at one end of the regulating tube 151. The regulating tube 151 is provided with an regulating hole 153. There are multiple regulating holes 153, which are distributed in a circular array on the regulating tube 151, and the radius of the multiple regulating holes 153 gradually decreases. The position of the regulating hole 153 corresponds to the position of the fourth connecting tube 134.

[0053] like Figure 6 , Fig.17 As shown, the nozzle 16 is arranged at one end of the third connecting pipe 133 away from the second connecting pipe 132, and a rotating shaft 161 is arranged on the nozzle 16, and a first impeller 162 and a second impeller 163 are rotatably connected to the rotating shaft 161, and the inclination direction of the blades on the first impeller 162 is opposite to the inclination direction of the blades on the second impeller 163.

[0054] The working process is as follows:

[0055] S1. Before use, a test spray is performed. When performing the test spray, the top cover 401 is opened to add clean water into the storage container 4, and the driving member 2 is started. The driving member 2 drives the fan 3. A part of the airflow blown out by the fan 3 is sprayed out along the air duct 6, and a part of the airflow enters the storage container 4 along the air inlet pipe 403 and the air distribution pipe 405. The pressure in the storage container 4 increases, and the clean water is pressed into the water outlet pipe 407. At this time, the positions of the first through hole 903 and the second through hole 906 correspond to each other, so that the clean water enters the connecting water pipe 8 from the connecting member 9, and is sprayed out from the nozzle 16 along the fourth connecting pipe 134, the second connecting pipe 132 and the third connecting pipe 133;

[0056] S2. The airflow in the air duct 6 blows the first impeller 162 and the second impeller 163, so that the first impeller 162 and the second impeller 163 rotate on the rotating shaft 161. Since the inclination direction of the blades on the first impeller 162 is opposite to the inclination direction of the blades on the second impeller 163, the rotation directions of the first impeller 162 and the second impeller 163 are also opposite. The first impeller 162 and the second impeller 163 rotating in opposite directions break up the clean water sprayed from the nozzle 16, and then the airflow tears the broken clean water into pieces to form a spray, which is sprayed out from the spray hood 136 along the airflow, and check whether each connection is leaking;

[0057] S3. After the inspection is completed, the rotating tube 901 is rotated so that the positions of the first through hole 903 and the second through hole 906 are interlaced, the outlet pipe 407 is no longer connected to the connecting water pipe 8, and the clean water in the storage container 4 is discharged through the drain pipe 402. The regulating head 202 is pulled upward and rotated so that the block 203 is disengaged from the first slot 186 and is inserted into the second slot 187. The regulating head 202 drives the spline shaft 204 through the slide rod 201, and the spline shaft 204 drives the vent pipe 191 to rotate through the hollow frame 194, so that the vent hole 192 is aligned with the flow regulating component 15 (such as Figure 8 shown);

[0058] S4, continue to start the driving member 2 to drive the fan 3, and the Venturi effect generated when the high-speed airflow blows through the nozzle 16 causes negative pressure to be generated at the nozzle 16, so that the remaining clean water in the connecting water pipe 8 is pumped to the nozzle 16, and the outside air enters the connecting water pipe 8 from the connecting member 9 through the one-way air inlet valve 902, so that the remaining clean water in the connecting water pipe 8 is sprayed out from the nozzle 16;

[0059] S5. Then, the adjusting head 202 is pulled upward and rotated, so that the clamping block 203 is disengaged from the second clamping slot 187 and clamped into the first clamping slot 186. The adjusting head 202 drives the spline shaft 204 through the slide bar 201, and the spline shaft 204 drives the vent pipe 191 to rotate through the hollow frame 194, so that the vent hole 192 is aligned with the third connecting pipe 133 (such as Figure 7As shown in the figure, the Venturi effect generated when the high-speed airflow blows through the nozzle 16 causes negative pressure to be generated at the nozzle 16, and the remaining clean water in the fourth connecting pipe 134, the second connecting pipe 132 and the third connecting pipe 133 is drawn to the nozzle 16 and sprayed out from the nozzle 16. The outside air enters from the air inlet 171, pushes the sealing plate 182 to move, and enters the second connecting pipe 132 from the air hole 192 along the vent pipe 191 to complete the test spraying, so as to avoid the low concentration of the sprayed liquid in the initial period of time when the liquid is first loaded, thereby ensuring the control effect of pests and diseases;

[0060] S6, when spraying liquid medicine, add the liquid medicine into the storage container 4, then start the driving member 2, the driving member 2 drives the fan 3, part of the airflow blown out by the fan 3 is sprayed out along the air duct 6, and part of the airflow enters the storage container 4 along the air inlet pipe 403 and the air distribution pipe 405, the pressure in the storage container 4 increases, and the liquid medicine is pressed into the water outlet pipe 407, and the rotating tube 901 is rotated so that the positions of the first through hole 903 and the second through hole 906 correspond to each other, so that the liquid medicine enters the connecting water pipe 8 from the connecting member 9, and is sprayed out from the nozzle 16 along the fourth connecting pipe 134, the second connecting pipe 132 and the third connecting pipe 133;

[0061] S7, the airflow in the air duct 6 blows the first impeller 162 and the second impeller 163, so that the first impeller 162 and the second impeller 163 rotate on the rotating shaft 161. Since the inclination direction of the blades on the first impeller 162 is opposite to the inclination direction of the blades on the second impeller 163, the rotation directions of the first impeller 162 and the second impeller 163 are also opposite. The first impeller 162 and the second impeller 163 rotating in opposite directions break up the liquid medicine sprayed from the nozzle 16, and then the airflow tears the broken liquid medicine into a spray, which is sprayed out from the spray cover 136 along the airflow;

[0062] S8. When the spraying flow rate needs to be adjusted during the spraying of the liquid medicine, the flow regulating component 15 can be rotated. Since there are multiple regulating holes 153, the multiple regulating holes 153 are distributed in a circular array on the regulating tube 151, and the radius of the multiple regulating holes 153 gradually decreases, the amount of the sprayed liquid medicine can be adjusted by rotating the flow regulating component 15 to change the positions of the regulating holes 153 with different radii corresponding to the fourth connecting tube 134;

[0063] S9, after the spraying is completed, the rotating tube 901 is rotated so that the positions of the first through hole 903 and the second through hole 906 are staggered, the water outlet pipe 407 and the connecting water pipe 8 are no longer connected, the remaining liquid medicine in the storage container 4 is discharged through the drain pipe 402, and the storage container 4 is cleaned. Since the positions of the first through hole 903 and the second through hole 906 are staggered at this time, the water outlet pipe 407 and the connecting water pipe 8 are no longer connected, so as to prevent the liquid medicine or water from entering the connecting water pipe 8 again during the cleaning process of the storage container 4;

[0064] S10, then pull the adjusting head 202 upward and rotate the adjusting head 202, so that the block 203 is separated from the first slot 186 and inserted into the second slot 187, the adjusting head 202 drives the spline shaft 204 through the slide bar 201, and the spline shaft 204 drives the vent pipe 191 to rotate through the hollow frame 194, so that the vent hole 192 is aligned with the flow regulating component 15 (such as Figure 8 shown);

[0065] S11, the driving member 2 is continuously started to drive the fan 3, and the Venturi effect generated when the high-speed airflow blows through the nozzle 16 causes negative pressure to be generated at the nozzle 16, so that the remaining liquid medicine in the connecting water pipe 8 is drawn to the nozzle 16, and the outside air enters the connecting water pipe 8 from the connecting member 9 through the one-way air inlet valve 902, so that the remaining liquid medicine in the connecting water pipe 8 is sprayed out from the nozzle 16;

[0066] S12, then pull the adjusting head 202 upward and rotate the adjusting head 202, so that the clamping block 203 is separated from the second clamping slot 187 and clamped into the first clamping slot 186, the adjusting head 202 drives the spline shaft 204 through the slide bar 201, and the spline shaft 204 drives the vent pipe 191 to rotate through the hollow frame 194, so that the vent hole 192 is aligned with the third connecting pipe 133 (such as Figure 7 As shown in FIG. 1 ), the Venturi effect generated when the high-speed airflow blows through the nozzle 16 generates a negative pressure at the nozzle 16, and the remaining liquid in the fourth connecting pipe 134, the second connecting pipe 132 and the third connecting pipe 133 is drawn to the nozzle 16 and sprayed out from the nozzle 16;

[0067] S13. External air enters from the air inlet 171, pushes the sealing plate 182 to move, and enters the second connecting pipe 132 from the air hole 192 along the vent pipe 191, so as to prevent the residual liquid medicine in the connecting water pipe 8 from affecting the next use. At the same time, it is prevented that the water in the residual liquid medicine in the connecting water pipe 8 evaporates when the spray device is not used for a short period of time, and the precipitated medicine crystals in the connecting water pipe 8 and even adhere to the nozzle 16, which affects the flow of the liquid medicine during the next use and even blocks the nozzle 16, resulting in the inability to spray.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable spray device, characterized in that: It comprises a connecting frame, on which a driving member, a fan and a storage container are arranged, the fan is arranged at the output end of the driving member, a shoulder strap is arranged on the side of the connecting frame away from the fan, an air duct is arranged at the output end of the fan, a control handle is arranged on the air duct, a connecting water pipe is arranged on the storage container, a connecting member is arranged at one end of the connecting water pipe, the connecting water pipe is connected to the storage container through the connecting member, a switch valve is arranged on the connecting water pipe, a clamp is arranged on the switch valve, the switch valve is connected to the air duct through the clamp, and a spray mechanism is arranged at one end of the connecting water pipe away from the connecting member; The spray mechanism comprises a connecting assembly, on which an auxiliary assembly, a flow regulating assembly and a spray head are arranged; The auxiliary component comprises a connection cover, a sealing member and an air inlet member are arranged on the connection cover, an adjusting member is arranged on the sealing member, and the adjusting member is slidably connected with the air inlet member; The adjusting member comprises a slide rod, an adjusting head is arranged at one end of the slide rod, a clamping block is arranged at the adjusting head, a spline shaft is arranged at one end of the slide rod away from the adjusting head, a second limit block is arranged at one end of the spline shaft close to the slide rod, a third limit block is arranged at one end of the spline shaft away from the second limit block, and a second elastic member is arranged on the third limit block; The connection assembly includes a sleeve, the sleeve is arranged at one end of the air duct away from the fan, a second connecting pipe is arranged on the sleeve, a third connecting pipe is arranged at one end of the second connecting pipe, the third connecting pipe is arranged inside the sleeve, a fourth connecting pipe and a second threaded pipe are arranged on the second connecting pipe, and a spray hood is arranged at one end of the sleeve; The sealing member comprises a sliding tube, a sealing plate is arranged at one end of the sliding tube, a first limit block is arranged at one end of the sliding tube away from the sealing plate, a first elastic member is arranged on the first limit block, the first elastic member is arranged between the first limit block and the connecting cover, a sliding hole, a first clamping groove and a second clamping groove are opened on the first limit block, the sliding hole passes through the first limit block, the sliding tube and the sealing plate, and the sliding rod is slidably connected with the first limit block, the sliding tube and the sealing plate through the sliding hole; The air inlet member includes a ventilation pipe, a ventilation hole is provided on the ventilation pipe, the position of the block corresponds to the position of the ventilation hole, a swivel and a hollow frame are provided at one end of the ventilation pipe, the ventilation pipe is rotatably connected to the connecting cover through the swivel, the second elastic member is arranged between the third limit block and the hollow frame, a spline hole is provided on the hollow frame, and the spline shaft is slidably connected to the hollow frame through the spline hole.

2. A portable spray device according to claim 1, characterized in that: A top cover is provided on the top of the storage container, a drain pipe is provided on the bottom of the storage container, an air inlet pipe is provided on the bottom of the storage container, a stabilizing frame is provided inside the storage container, an air distribution pipe is provided on the stabilizing frame, a first connecting pipe is provided between the air distribution pipe and the air inlet pipe, a water outlet pipe is provided inside the storage container, and a first threaded pipe is provided at one end of the water outlet pipe.

3. A portable spray device according to claim 2, characterized in that: The connecting member includes a rotating tube, which is rotatably connected to one end of the connecting water pipe, a one-way air intake valve is arranged on the rotating tube, a first through hole is opened at one end of the rotating tube away from the connecting water pipe, a connecting ring is rotatably connected to the end of the rotating tube away from the connecting water pipe, the connecting ring is threadedly connected to the first threaded tube, a baffle is arranged at one end of the connecting ring close to the rotating tube, a second through hole is opened on the baffle, the position of the second through hole corresponds to the position of the first through hole, and the end of the connecting water pipe away from the rotating tube is connected to the fourth connecting pipe.

4. A portable spray device according to claim 3, characterized in that: The connecting cover is threadedly connected to the second threaded tube, an air inlet hole and a connecting hole are provided on the connecting cover, a connecting groove is provided inside the connecting cover, the sliding tube is slidably connected to the connecting cover through the connecting hole, and the swivel is arranged inside the connecting groove.

5. A portable spray device according to claim 3, characterized in that: The flow regulating assembly comprises a regulating tube, which is rotatably connected to the inside of the second connecting tube, a knob is arranged at one end of the regulating tube, and a regulating hole is opened on the regulating tube.

6. A portable spray device according to claim 3, characterized in that: The nozzle is arranged at one end of the third connecting pipe away from the second connecting pipe, and a rotating shaft is arranged on the nozzle, and a first impeller and a second impeller are rotatably connected to the rotating shaft, and the inclination direction of the blades on the first impeller is opposite to the inclination direction of the blades on the second impeller.

7. A portable spray device according to claim 5, characterized in that: There are multiple adjustment holes, which are distributed in a circular array on the adjustment tube, and the radius of the multiple adjustment holes gradually decreases. The positions of the adjustment holes correspond to the position of the fourth connecting tube.

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