Sprayer with controllable dispersion range

Abstract

The invention discloses a sprayer with a controllable dispersion range, and relates to the technical field of atomization, the sprayer comprises a support device, a liquid supply device, an adjusting device and an atomization device, the liquid supply device is connected with the support device, the liquid supply device is communicated with the adjusting device through a pipeline, the atomization device is communicated with the adjusting device through a pipeline, and the atomization device is used for adjusting the spraying range. The supporting device serves as a main installation foundation and is used for installing other devices, the liquid supply device is used for supplying liquid to be sprayed, and when spraying is conducted on different areas, the length of a pipeline is adjusted through the adjusting device, and pressurized spraying is conducted on the liquid by arranging the atomizing device.

Description

Technical Field

[0001] The invention relates to the technical field of atomization, in particular to a sprayer with controllable diffusion range. Background Art

[0002] A sprayer is a device that uses high pressure to atomize medicine or other liquids into droplets. Currently, sprayers include manual and electric modes. The electric mode is mostly used during large-scale spraying.

[0003] Electric sprayers can be backpack-type or self-propelled. With the upgrading of automation equipment, the self-propelled type can meet the needs of large-area spraying. During atomization, since the liquid being transported, such as the liquid medicine, contains some soluble solid particles, and the fluid transport of the spray is mostly one-way, it is easy to cause solid particles to accumulate, thereby clogging the nozzle, increasing the local pressure and the spray range, and the controllability of the spray dispersion range cannot be guaranteed.

[0004] In addition, in large-scale spraying, in order to adapt to a large area, a longer pipeline is needed to facilitate spraying operations within a longer radiation radius. However, the overall length of the pipeline is the length of the liquid delivery, which will not only cause pressure loss along the liquid, resulting in fluctuations in the spray range, but also leave more liquid after the spray is completed, resulting in waste. Summary of the invention

[0005] The object of the present invention is to provide a sprayer with a controllable diffusion range to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions: The sprayer comprises a supporting device, a liquid supply device, an adjusting device and an atomizing device. The liquid supply device is connected to the supporting device, the liquid supply device is connected to the adjusting device through a pipeline, the atomizing device is connected to the adjusting device through a pipeline, and the atomizing device is used to adjust the spray range.

[0007] The supporting device is used as the main installation basis for installing other devices. The liquid supply device is used to supply the liquid to be sprayed. When spraying different areas, the length of the pipeline is adjusted by the adjusting device, and the liquid is pressurized and sprayed by setting the atomizing device.

[0008] Furthermore, the support device includes a vehicle body and a support frame, the support frame and the vehicle body are tightly connected, the liquid supply device includes a liquid storage barrel, a booster pump and a liquid supply pipe, the liquid storage barrel and the vehicle body are tightly connected, the liquid outlet of the liquid storage barrel is connected to the liquid supply pipe through the booster pump, and the end of the liquid supply pipe away from the booster pump is connected to the pipeline of the regulating device; The regulating device includes a guide assembly, an extension tube and a roller. The roller is rotatably connected to a support frame. A guide channel is provided on the support frame. The liquid supply pipe is connected to the guide channel pipeline. The extension tube is wrapped around the outside of the roller. The end of the guide channel is connected to the extension tube through the guide assembly. The extension tube includes a tube body. A plurality of drainage nozzles are arranged along the axial direction of the tube body. The drainage nozzles are made of rubber. The guide assembly and the drainage nozzles are intermittently connected. The end of the tube body away from the roller is connected to the atomization device pipeline. The length of the tube body between the conducted drainage nozzles and the atomization device is the conduction stroke.

[0009] The vehicle body is used to carry other devices, and a driving structure is arranged on it to drive the overall movement. The support frame is fixed on the vehicle body and rotatably supports the roller. Several turns of the extension tube are wound on the roller. According to different atomization areas, the extension tube on the roller is unwound to increase the radiation range of the spray. The liquid storage barrel is used to store liquid and is fixed on the vehicle body. The liquid is pressurized by a booster pump. The pressurized liquid is transported to the guide channel of the support frame through the liquid supply pipe. The liquid is sent to the guide component through the guide channel, and the liquid is sent to the extension tube by the guide component. The extension tube adopts a split structure, including a tube body made of flexible material, on which a plurality of drainage nozzles are arranged. The drainage nozzles are made of rubber. In the initial state, the part close to the axis of the tube body is in a sealed state. When diverting, the diversion component and the drainage nozzle are in a connected state, and the liquid is pumped into the tube body. At this time, the tube body is divided by the conductive drainage nozzle, the positioning conduction stroke close to the output end, and the truncation stroke close to the roller. The length of the conduction stroke is adjusted as needed to avoid excessive atomized liquid remaining in the tube body, causing waste. At the same time, the length of the pipeline connected to the entire spray flow path is greatly reduced, thereby reducing the extension loss and improving the atomization quality.

[0010] Furthermore, the flow guide assembly includes a central axis and a cannula, a through hole is provided on the support frame, one end of the tube body passes through the through hole, a rotation groove is provided on one side of the through hole, the central axis is placed in the rotation groove, a directional flow channel is provided on the central axis, the flow guide channel and the directional flow channel are connected, a rotating roller is sleeved on the outer ring of the central axis, the rotating roller and the central axis are rotatably connected, a plurality of slots are provided on the rotating roller, one end of the cannula is inserted into the slot, and the other end is connected with the gap between the adjacent drainage nozzles; When conducting: the outlet of the directional flow channel is connected to the inner side of the adjacent cannula, the outer side of the cannula is inserted into the drainage nozzle, and the drainage nozzle is connected to the inner cavity of the tube body.

[0011] The directional flow channel outlet on the central axis is set unidirectionally, along the radial direction of the central axis, for connecting the flow channel and the cannula. The rotating roller is supported by the central axis for rotation. When spraying a distant area, the tube body is dragged to move, and the tube body is unwound from the roller and enters the through hole. The through hole is connected to the rotating groove. At this time, one of the cannula is inserted into the nearest drainage nozzle, so that the front of the tube body here is conductive. As the tube body continues to unwind, the cannula is driven to move through the drainage nozzle and finally pulled out. The cannula is fixed in the slot of the rotating roller. The distance between two adjacent cannulae is set according to the drainage nozzle spacing, so that when the roller rotates, one cannula is detached from the drainage nozzle and the other cannula is inserted into the subsequent drainage nozzle, thereby ensuring the reliability of the conduction stroke. The conduction stroke length can be adjusted according to different spray areas to ensure the spray quality.

[0012] Furthermore, the adjusting device also includes a cutting component, a cutting groove is provided on one side of the through hole, the cutting component includes a crimping cylinder and a clamping roller, the crimping cylinder is placed in the cutting groove, a clamping roller is provided at the output end of the crimping cylinder, the clamping roller and the output end of the crimping cylinder are rotatably connected, and the outer ring of the clamping roller cuts off the end of the tube body close to the winding roller.

[0013] By setting a cut-off assembly, the rear section of the pipe body at the connected drainage nozzle is automatically cut off to prevent the liquid from flowing to the rear section, ensuring that the pumped liquid only flows along the drainage nozzle connection toward the pipe body outlet. The crimping cylinder is fixed by the cut-off groove, and the output end of the crimping cylinder rotates to connect the clamping roller, which partially presses the pipe body on the wall of the through hole, so that the local flow path of the pipe body is cut off.

[0014] Furthermore, the truncation groove and the rotation groove are arranged in sequence along the pipe feeding direction of the through hole.

[0015] By arranging the cut-off groove and the rotating groove in sequence along the conveying direction of the through hole, the pipe body forms a conducting stroke and a cut-off stroke, thereby ensuring the stability of pumping.

[0016] Furthermore, the adjusting device also includes an adjusting motor, the adjusting motor is fastened to the support frame, and the output end of the adjusting motor is transmission-connected to the winding roller.

[0017] By setting an adjustable motor, when the tube body on the roller is unwinding, the roller is driven to rotate to perform auxiliary unwinding. After the spraying is completed, the roller is driven to rotate to perform automatic rewinding.

[0018] Furthermore, the atomization device includes a spray rod and a knob, one end of the spray rod is connected to the tube body, a spray head is provided at the end of the spray rod away from the tube body, a liquid inlet, a spray stroke and a pressure regulating groove are provided on the spray head, the liquid inlet is connected to the spray rod, the liquid inlet and the pressure regulating groove are arranged opposite to each other, one end of the knob passes through the pressure regulating groove and is inserted into the liquid inlet, the knob is conically arranged on the side close to the liquid inlet, the knob and the pressure regulating groove are threadedly connected, and the spray stroke and the liquid inlet are connected.

[0019] The liquid transported by the tube body is introduced into the nozzle through the spray rod and atomized by the nozzle. The spray stroke adopts the form of a Venturi tube, including a tapered section, a parallel section and a gradually expanding section, which is convenient for atomization of high-pressure liquid. One end of the knob passes through the pressure regulating groove and is inserted into the liquid inlet. The knob is set in a conical shape and is spirally connected to the pressure regulating groove. By rotating the knob, the depth of the knob inserted into the liquid inlet is adjusted, thereby adjusting the flow cross-sectional area between the knob and the liquid inlet, thereby adjusting the spray pressure and adjusting the range of dispersion.

[0020] Furthermore, the atomizing device further comprises a pressure-sensitive sheet and a paddle, a liquid separation port is provided on one side of the liquid inlet, the pressure-sensitive sheet is connected to the liquid separation port inlet, the paddle is rotatably connected to the liquid separation port outlet, and the paddle cross-sectional area is larger than the liquid separation port outlet cross-sectional area. By setting the pressure-sensitive sheet, the outlet pressure of the liquid inlet is detected, and a filter is set on the side of the liquid inlet close to the spray stroke to prevent clogging caused by entering the spray stroke.

[0021] Under normal conditions, the liquid in the liquid inlet flows in one direction and pushes the paddle to fit the outlet of the liquid separation port. The pressure-sensitive sheet can be an elastic metal sheet, and the pressure-sensitive sheet hardly deforms, that is, the liquid separation port is in a cut-off state, at which time the impurities are filtered by the filter disc; when more impurities accumulate, the filter holes of the filter disc are blocked, the flow cross-section is reduced, the pressure at the liquid separation port is increased, and the pressure-sensitive sheet is deformed. During the deformation of the pressure-sensitive sheet into the liquid separation port, the liquid separation port and the liquid inlet are connected, and part of the liquid enters the liquid separation port from the liquid inlet. Since the filter disc is in a partially blocked state, liquid continues to enter the spray stroke, which will produce a pressure drop. The liquid entering the liquid separation port pushes the paddle to deflect a certain angle, and the liquid leaks from the liquid separation port and impacts the impurities. The direction of the jet impact produces an angle difference with the flow direction of the fluid in the liquid inlet, so that the fluid near the filter disc is in a local turbulent state, thereby increasing the shear force on the impurity particles, allowing the drug particles inside to be quickly dissolved, and preventing local blockage.

[0022] As an optimization, the cross-sectional area of ​​the inlet of the liquid separation port is set to increase along the liquid delivery direction. By setting the diameter of the liquid separation port to increase, when the pressure-sensitive plate is deformed toward the liquid separation port, due to the increase in the cross-sectional area, a flow gap is generated between the periphery of the pressure-sensitive plate and the wall of the liquid separation port, and the liquid directly enters the liquid separation port, which is convenient for adjusting the liquid flow state.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the extension tube adopts a split structure, including a tube body made of flexible material, on which a plurality of drainage nozzles are arranged, the drainage nozzles are made of rubber material, and in the initial state, the part close to the axis of the tube body is in a sealed state, and when diversion is performed, the diversion assembly and the drainage nozzle are in a connected state, and the liquid is pumped into the tube body. At this time, the tube body uses the conductive drainage nozzle as the dividing line, the positioning conductive stroke close to the output end, and the truncation stroke close to the roller. The length of the conduction stroke is adjusted as needed to avoid excessive atomized liquid remaining in the tube body, causing waste. At the same time, the length of the pipeline connected to the entire spray flow path is greatly reduced, thereby reducing the extension loss and improving the atomization quality. When spraying a distant area, the tube body is dragged to move, and the tube body is unwound from the roller and enters the through hole. The through hole is connected to the rotating groove. At this time, one of the insert tubes is inserted into the nearest drainage nozzle, so that the front of the tube body here is conductive. As the tube body continues to unwind, the insert tube is driven to move through the drainage nozzle and finally pulled out. The insert tube is fixed in the slot of the rotating roller. The distance between two adjacent insert tubes is set according to the drainage nozzle spacing, so that when the rotating roller rotates, one insert tube is detached from the drainage nozzle and the other insert tube is inserted into the subsequent drainage nozzle, thereby ensuring the reliability of the conduction stroke. The conduction stroke length can be adjusted according to different spray areas to ensure the spray quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the truncation component of the present invention; Figure 3 It is a schematic diagram of the structure of the flow guide assembly of the present invention; Figure 4 for Figure 2 A magnified view of a part of the view; Figure 5 It is a schematic diagram of the sequentially conducting state of the extension tubes of the present invention; Figure 6 for Figure 5 A magnified view of a part B of the view; Figure 7 It is a schematic diagram of the nozzle structure of the present invention.

[0025] In the figure: 1. supporting device; 11. vehicle body; 12. supporting frame; 121. flow guide channel; 122. cut-off groove; 123. rotating groove; 124. through hole; 2. liquid supply device; 21. liquid storage barrel; 22. booster pump; 23. liquid supply pipe; 3. regulating device; 31. flow guide assembly; 311. central axis; 3111. directional flow channel; 312. rotating roller; 313. cannula; 32. extension tube; 321. tube body; 322. drainage nozzle; 33. cut-off assembly; 331. clamping roller; 332. crimping cylinder; 34. winding roller; 35. regulating motor; 4. atomizing device; 41. liquid spray rod; 42. nozzle; 421. liquid inlet; 422. spray stroke; 423. pressure regulating groove; 424. liquid dispensing port; 43. knob; 44. pressure sensing sheet; 45. paddle. DETAILED DESCRIPTION

[0026] 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.

[0027] Example: Figure 1-Figure 7 As shown, the present invention provides a technical solution of a sprayer with a controllable diffusion range.

[0028] The sprayer includes a supporting device 1, a liquid supply device 2, an adjusting device 3 and an atomizing device 4. The liquid supply device 2 is connected to the supporting device 1, the liquid supply device 2 is connected to the adjusting device 3 by a pipeline, the atomizing device 4 is connected to the adjusting device 3 by a pipeline, and the atomizing device 4 is used to adjust the spray range.

[0029] The support device 1 is used as the main installation base for installing other devices. The liquid supply device 2 is used to supply the liquid to be sprayed. When spraying different areas, the length of the pipeline is adjusted by the adjustment device 3, and the liquid is pressurized and sprayed by setting the atomization device 4.

[0030] Further, the support device 1 includes a vehicle body 11 and a support frame 12, the support frame 12 and the vehicle body 11 are fastened together, the liquid supply device 2 includes a liquid storage barrel 21, a booster pump 22 and a liquid supply pipe 23, the liquid storage barrel 21 and the vehicle body 11 are fastened together, the liquid outlet of the liquid storage barrel 21 is connected to the liquid supply pipe 23 through the booster pump 22, and the end of the liquid supply pipe 23 away from the booster pump 22 is connected to the pipeline of the regulating device 3; The regulating device 3 includes a flow guide component 31, an extension tube 32 and a roller 34. The roller 34 is rotatably connected to the support frame 12. A flow guide channel 121 is provided on the support frame 12. The liquid supply pipe 23 is connected to the flow guide channel 121 through a pipeline. The extension tube 32 is wrapped around the outside of the roller 34. The end of the flow guide channel 121 is connected to the extension tube 32 through the flow guide component 31. The extension tube 32 includes a tube body 321. A plurality of drainage nozzles 322 are arranged along the axial direction of the tube body 321. The drainage nozzles 322 are made of rubber. The flow guide component 31 and the drainage nozzles 322 are intermittently connected. The end of the tube body 321 away from the roller 34 is connected to the pipeline of the atomizing device 4. The length of the tube body 321 between the connected drainage nozzles 322 and the atomizing device 4 is the conduction stroke.

[0031] The vehicle body 11 is used to carry other devices, and a driving structure is arranged on it to drive the overall movement. The support frame 12 is fixed on the vehicle body 11 and rotatably supports the roller 34. The roller 34 is wound with a plurality of turns of the extension tube 32. The extension tube 32 on the roller 34 is unwound according to different atomization areas to increase the radiation range of the spray. The liquid storage barrel 21 is used to store liquid and is fixed on the vehicle body. The liquid is pressurized by the booster pump 22. The pressurized liquid is transported to the guide channel 121 of the support frame 12 through the liquid supply pipe 23, and the liquid is sent to the guide component 31 through the guide channel 121. The guide component 31 sends the liquid into the extension tube 32. The extension tube 32 adopts a split structure, including a tube body 321 made of a flexible material, on which a plurality of drainage nozzles 322 are arranged. The drainage nozzles 322 are made of rubber material. In the initial state, the part close to the axis of the tube body 321 is in a sealed state. When diversion is performed, the diversion component 31 and the drainage nozzle 322 are in a connected state, and the liquid is pumped into the tube body 321. At this time, the tube body 321 uses the conductive drainage nozzle 322 as the dividing line, the positioning conduction stroke close to the output end, and the truncation stroke close to the roller 34. The length of the conduction stroke is adjusted as needed to avoid excessive atomized liquid remaining in the tube body 321 and causing waste. At the same time, the length of the pipeline connected to the entire spray flow path is greatly reduced, thereby reducing the extension loss and improving the atomization quality.

[0032] Furthermore, the flow guide component 31 includes a central axis 311 and a cannula 313, a through hole 124 is provided on the support frame 12, one end of the tube body 321 passes through the through hole 124, a rotation groove 123 is provided on one side of the through hole 124, the central axis 311 is placed in the rotation groove 123, a directional flow channel 3111 is provided on the central axis 311, the flow guide channel 121 and the directional flow channel 3111 are connected, a roller 312 is sleeved on the outer ring of the central axis 311, the roller 312 and the central axis 311 are rotatably connected, a plurality of slots are provided on the roller 312, one end of the cannula 313 is inserted into the slot, and the other end is gap-connected with the adjacent drainage nozzle 322; When connected: the outlet of the directional flow channel 3111 is connected to the inner side of the adjacent cannula 313 , the outer side of the cannula 313 is inserted into the drainage nozzle 322 , and the drainage nozzle 322 is connected to the inner cavity of the tube body 321 .

[0033] The outlet of the directional flow channel 3111 on the central axis 311 is unidirectionally arranged along the radial direction of the central axis 311, and is used to connect the flow guide channel 121 and the cannula 313. The central axis 311 is used to rotatably support the rotating roller 312. When spraying a farther area, the tube body 321 is dragged to move, and the tube body 321 is unwound from the roller 34 and enters the through hole 124. The through hole 124 is connected to the rotating groove 123. At this time, one of the insert tubes 313 is inserted into the nearest drainage nozzle 322, so that the front of the tube body 321 here is conductive. As the tube body 321 continues to unwind, the insert tube 313 is driven to move through the drainage nozzle 322 and finally pulled out. The insert tube 313 is fixed in the slot of the rotating roller 312. The distance between two adjacent insert tubes 313 is set according to the spacing between the drainage nozzles 322, so that when the rotating roller 312 rotates, one insert tube 313 is detached from the drainage nozzle 322, and the other insert tube 313 is inserted into the subsequent drainage nozzle 322, thereby ensuring the reliability of the conductive stroke. The conductive stroke length can be adjusted according to different spraying areas to ensure the spray quality.

[0034] Furthermore, the adjusting device 3 also includes a cutting component 33, a cutting groove 122 is provided on one side of the through hole 124, and the cutting component 33 includes a crimping cylinder 332 and a clamping roller 331. The crimping cylinder 332 is placed in the cutting groove 122, and a clamping roller 331 is provided at the output end of the crimping cylinder 332. The clamping roller 331 and the output end of the crimping cylinder 332 are rotatably connected, and the outer ring of the clamping roller 331 cuts off the end of the tube body 321 close to the winding roller 34.

[0035] The cut-off assembly 33 is provided to automatically cut off the rear section of the tube body 321 at the connected drainage nozzle 322, preventing the liquid from flowing to the rear section, ensuring that the pumped liquid only flows along the connected section of the drainage nozzle 322 toward the outlet of the tube body 321. The crimping cylinder 332 is fixed by the cut-off groove 122, and the output end of the crimping cylinder 332 is rotated to connect the clamping roller 331, which partially presses the tube body 321 on the wall surface of the through hole 124, so that the local flow path of the tube body 321 is cut off.

[0036] Furthermore, the truncation groove 122 and the rotation groove 123 are arranged in sequence along the pipe feeding direction of the through hole 124 .

[0037] By sequentially arranging the truncation groove 122 and the rotation groove 123 along the conveying direction of the through hole 124, the tube body 321 forms a conducting stroke and a truncation stroke, thereby ensuring the stability of pumping.

[0038] Furthermore, the adjusting device 3 also includes an adjusting motor 35 , the adjusting motor 35 is fastened to the support frame 12 , and the output end of the adjusting motor 35 is transmission-connected to the winding roller 34 .

[0039] By setting up the regulating motor 35, when the tube body 321 on the winding roller 34 is unwinding, the winding roller 34 is driven to rotate to perform auxiliary unwinding, and after the spraying is completed, the winding roller 34 is driven to rotate to perform automatic rewinding.

[0040] Furthermore, the atomization device 4 includes a spray rod 41 and a knob 43, one end of the spray rod 41 is connected to the tube body 321, and a nozzle 42 is provided at the end of the spray rod 41 away from the tube body 321, and a liquid inlet 421, a spray stroke 422 and a pressure regulating groove 423 are provided on the nozzle 42, the liquid inlet 421 is connected to the spray rod 41, the liquid inlet 421 and the pressure regulating groove 423 are arranged opposite to each other, one end of the knob 43 passes through the pressure regulating groove 423 and is inserted into the liquid inlet 421, the knob 43 is conically arranged near the side of the liquid inlet 421, the knob 43 and the pressure regulating groove 423 are threadedly connected, and the spray stroke 422 and the liquid inlet 421 are connected.

[0041] The liquid transported by the tube body 321 is introduced into the nozzle 42 through the spray rod 41 and is atomized by the nozzle 42. The spray stroke 422 adopts a Venturi tube form, including a tapered section, a parallel section and a gradually expanding section, which is convenient for atomizing the high-pressure liquid. One end of the knob 43 passes through the pressure regulating groove 423 and is inserted into the liquid inlet 421. The knob 43 is set in a cone shape and is spirally connected to the pressure regulating groove 423. By rotating the knob 43, the depth of the knob 43 inserted into the liquid inlet 421 is adjusted, thereby adjusting the flow cross-sectional area between the knob 43 and the liquid inlet 421, thereby adjusting the spray pressure and adjusting the range of dispersion.

[0042] Furthermore, the atomizing device 4 further includes a pressure-sensitive sheet 44 and a paddle 45. A liquid separation port 424 is provided on one side of the liquid inlet 421. The pressure-sensitive sheet 44 is connected to the inlet of the liquid separation port 424. The paddle 45 is rotatably connected to the outlet of the liquid separation port 424. The cross-sectional area of ​​the paddle 45 is larger than the cross-sectional area of ​​the outlet of the liquid separation port 424. By providing the pressure-sensitive sheet 44, the outlet pressure of the liquid inlet 421 is detected, and a filter is provided on the side of the liquid inlet 421 close to the spray stroke 422 to prevent the liquid from entering the spray stroke 422 and causing blockage.

[0043] Under normal conditions, the liquid in the liquid inlet 421 flows in one direction and pushes the paddle 45 to fit the outlet of the liquid separation port 424. The pressure-sensitive sheet 44 can be an elastic metal sheet and is almost not deformed, that is, the liquid separation port 424 is in a cut-off state, at which time the impurities are filtered by the filter disc; when more impurities accumulate, the filter holes of the filter disc are blocked, the flow cross section is reduced, the pressure at the liquid separation port 424 is increased, and the pressure-sensitive sheet 44 is deformed. During the deformation of the pressure-sensitive sheet 44 into the liquid separation port 424, the liquid separation port 424 and the liquid inlet 421 are connected, and part of the liquid separation port 424 is connected to the liquid separation port 424. The liquid enters the liquid separation port 424 from the liquid inlet 421. Since the filter is in a partially blocked state, liquid continues to enter the spray stroke 422, which will cause a pressure drop. The liquid entering the liquid separation port 424 pushes the paddle 45 to deflect a certain angle, and the liquid flows out from the liquid separation port 424 and impacts the impurities. The direction of the jet impact has an angle difference with the flow direction of the fluid in the liquid inlet 421, so that the fluid near the filter is in a locally turbulent state, thereby increasing the shear force on the impurity particles, allowing the drug particles inside to be quickly dissolved and preventing local blockage.

[0044] As an optimization, the inlet cross-sectional area of ​​the liquid separation port 424 is set to increase along the liquid delivery direction. By setting the diameter of the liquid separation port 424 to increase, when the pressure-sensitive sheet 44 is deformed toward the liquid separation port 424, due to the increase in cross-sectional area, a flow gap is generated between the periphery of the pressure-sensitive sheet 44 and the wall of the liquid separation port 424, and the liquid directly enters the liquid separation port 424, which facilitates the adjustment of the liquid flow state.

[0045] The working principle of the present invention is as follows: the extension tube 32 adopts a split structure, including a tube body 321 made of a flexible material, on which a plurality of drainage nozzles 322 are arranged, and the drainage nozzles 322 are made of rubber material. In the initial state, the portion close to the axis of the tube body 321 is in a sealed state. When diverting, the diversion component 31 and the drainage nozzle 322 are in a connected state, and the liquid is pumped into the tube body 321. At this time, the tube body 321 uses the conductive drainage nozzle 322 as a dividing line, and the positioning conduction stroke close to the output end and the truncation stroke close to the roller 34. The length of the conduction stroke is adjusted as needed to avoid excessive atomized liquid remaining in the tube body 321, which causes waste. At the same time, the length of the pipeline connected to the entire spray flow path is greatly reduced, thereby reducing the extension loss and improving the atomization quality. When spraying a distant area, the tube body 321 is dragged to move, and the tube body 321 is unwound from the roller 34 and enters the through hole 124. The through hole 124 is connected to the rotating groove 123. At this time, one of the intubations 313 is inserted into the nearest drainage nozzle 322, so that the tube body 321 at this location The front is conducted, and as the tube body 321 continues to unwind, the insertion tube 313 is driven to move through the drainage nozzle 322 and finally pulled out. The insertion tube 313 is fixed in the slot of the roller 312, and the distance between two adjacent insertion tubes 313 is set according to the spacing of the drainage nozzles 322, so that when the roller 312 rotates, one insertion tube 313 is detached from the drainage nozzle 322, and the other insertion tube 313 is inserted into the subsequent drainage nozzle 322, thereby ensuring the reliability of the conduction stroke. The conduction stroke length can be adjusted according to different spray areas to ensure the spray quality.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A sprayer with controllable diffusion range, characterized in that: The sprayer comprises a supporting device (1), a liquid supply device (2), an adjusting device (3) and an atomizing device (4); the liquid supply device (2) and the supporting device (1) are connected, the liquid supply device (2) and the adjusting device (3) are connected by a pipeline, the atomizing device (4) and the adjusting device (3) are connected by a pipeline, and the atomizing device (4) is used to adjust the spray range; The support device (1) comprises a vehicle body (11) and a support frame (12), the support frame (12) and the vehicle body (11) being tightly connected, the liquid supply device (2) comprising a liquid storage barrel (21), a booster pump (22) and a liquid supply pipe (23), the liquid storage barrel (21) and the vehicle body (11) being tightly connected, the liquid outlet of the liquid storage barrel (21) being connected to the liquid supply pipe (23) via the booster pump (22), and the end of the liquid supply pipe (23) away from the booster pump (22) being connected to a pipeline of the regulating device (3); The regulating device (3) comprises a flow guide assembly (31), an extension tube (32) and a roller (34); the roller (34) is rotatably connected to a support frame (12); a flow guide channel (121) is provided on the support frame (12); the liquid supply pipe (23) and the flow guide channel (121) are connected via a pipeline; the extension tube (32) is wound around the outside of the roller (34); the end of the flow guide channel (121) is connected to the extension tube (32) via the flow guide assembly (31); The extension tube (32) comprises a tube body (321), a plurality of drainage nozzles (322) are arranged along the axial direction of the tube body (321), the drainage nozzles (322) are made of rubber, the flow guide assembly (31) and the drainage nozzles (322) are intermittently connected, the end of the tube body (321) away from the roller (34) is connected to the pipeline of the atomizing device (4), and the length of the tube body (321) between the drainage nozzles (322) and the atomizing device (4) is the conduction stroke.

2. A sprayer with controllable diffusion range according to claim 1, characterized in that: The flow guide component (31) comprises a central axis (311) and a plug (313); a through hole (124) is provided on the support frame (12); one end of the tube body (321) passes through the through hole (124); a rotation groove (123) is provided on one side of the through hole (124); the central axis (311) is placed in the rotation groove (123); a directional flow channel (3111) is provided on the central axis (311); the flow guide channel (121) and the directional flow channel (3111) are connected; a rotating roller (312) is sleeved on the outer ring of the central axis (311); the rotating roller (312) and the central axis (311) are rotatably connected; a plurality of slots are provided on the rotating roller (312); one end of the plug (313) is inserted into the slot; and the other end is gap-connected to an adjacent drainage nozzle (322); When connected: the outlet of the directional flow channel (3111) is connected to the inner side of the adjacent cannula (313), the outer side of the cannula (313) is inserted into the drainage nozzle (322), and the drainage nozzle (322) is connected to the inner cavity of the tube body (321).

3. A sprayer with controllable diffusion range according to claim 2, characterized in that: The regulating device (3) further comprises a cutting component (33), a cutting groove (122) being provided on one side of the through hole (124), the cutting component (33) comprising a crimping cylinder (332) and a clamping roller (331), the crimping cylinder (332) being disposed in the cutting groove (122), a clamping roller (331) being provided at the output end of the crimping cylinder (332), the clamping roller (331) being rotatably connected to the output end of the crimping cylinder (332), and the outer ring of the clamping roller (331) cutting off the end of the tube body (321) close to the winding roller (34).

4. A sprayer with controllable diffusion range according to claim 3, characterized in that: The truncation groove (122) and the rotation groove (123) are arranged in sequence along the pipe feeding direction of the through hole (124).

5. A sprayer with controllable diffusion range according to claim 4, characterized in that: The regulating device (3) further comprises an regulating motor (35), wherein the regulating motor (35) is firmly connected to the support frame (12), and an output end of the regulating motor (35) is drivingly connected to the winding roller (34).

6. A sprayer with controllable diffusion range according to claim 5, characterized in that: The atomizing device (4) comprises a liquid spraying rod (41) and a knob (43); one end of the liquid spraying rod (41) is connected to the tube body (321); a nozzle (42) is provided at one end of the liquid spraying rod (41) away from the tube body (321); the nozzle (42) is provided with a liquid inlet (421), a spray stroke (422) and a pressure regulating groove (423); the liquid inlet (421) is connected to the liquid spraying rod (41); the liquid inlet (421) and the pressure regulating groove (423) are arranged opposite to each other; one end of the knob (43) passes through the pressure regulating groove (423) and is inserted into the liquid inlet (421); the knob (43) is arranged in a conical shape on a side close to the liquid inlet (421); the knob (43) and the pressure regulating groove (423) are threadedly connected; and the spray stroke (422) is connected to the liquid inlet (421).

7. A sprayer with controllable diffusion range according to claim 6, characterized in that: The atomizing device (4) further comprises a pressure-sensitive sheet (44) and a paddle (45); a liquid separation port (424) is provided on one side of the liquid inlet (421); the pressure-sensitive sheet (44) is connected to the inlet of the liquid separation port (424); the paddle (45) is rotatably connected to the outlet of the liquid separation port (424); and the cross-sectional area of ​​the paddle (45) is larger than the cross-sectional area of ​​the outlet of the liquid separation port (424).

8. The sprayer with controllable diffusion range according to claim 7, characterized in that: The inlet cross-sectional area of ​​the liquid separation port (424) is arranged to increase gradually along the liquid delivery direction.

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