Multifunctional spraying device

Abstract

The multifunctional spraying device comprises a spraying gun body, an air inlet switching assembly is arranged on the spraying gun body, a nozzle assembly is arranged at the air outlet end of the spraying gun body, and a flow adjusting assembly is arranged between the nozzle assembly and the air inlet switching assembly; a lining mounting seat is fixedly mounted in the spray gun main body, and a valve switch assembly is arranged on the lining mounting seat; an air bag is arranged at the top of the spray gun main body, and a detachable storage bag is arranged in the air bag; the storage bag is connected with the nozzle assembly, and the air bag is connected with the air inlet switching assembly through the valve switch assembly; a feeding connector is arranged on the nozzle assembly, and a stroke adjusting switch is arranged at the tail of the spray gun body. A toggle switch assembly is further arranged in the spray gun body and comprises a trigger and a deflector rod, and the deflector rod stretches out and draws back relative to the nozzle assembly when the trigger rotates relative to the spray gun body. The spray gun body is provided with the nozzle assembly and the air bag, discharging can be conducted by connecting the pump body with the nozzle assembly, discharging can be smoother by extruding the material storage bag through the air bag, and universality is good.

Description

Technical Field

[0001] The invention belongs to the technical field of spraying equipment, and in particular relates to a multifunctional spraying device. Background Art

[0002] Spraying devices are commonly used in daily life, and are generally connected to spray guns; generally, traditional spraying devices have relatively simple functions and poor versatility, and cannot adapt to various spraying environments; the existing patent text with patent number CN204276210U discloses a high-efficiency, energy-saving and environmentally friendly HVLP low-pressure warm air spraying equipment, including a body, a filter device, a first-stage turbocharger, a second-stage turbocharger, a third-stage turbocharger, a heater, a high-speed motor and a nozzle, and the body is provided with a first-stage turbocharger, and the input end of the first-stage turbocharger is provided with a filter device; the existing disclosed HVLP low-pressure warm air spraying equipment only has a boosting function, and can only be used for wind pressure discharge, and has poor versatility. In the existing spraying environment, the spraying range of the construction is usually large and small, and the traditional HVLP low-pressure warm air spraying equipment cannot adapt to this working condition. Therefore, it is necessary to design a multifunctional spraying device to overcome the above difficulties. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention designs a multifunctional spraying device. The spray gun body of the present invention is provided with a nozzle assembly and an air bag. The nozzle assembly is connected to a pump body to discharge materials, and the material storage bag is squeezed by the air bag to discharge materials more smoothly. The usage scenarios can be switched freely, and the versatility is good.

[0004] The inventive object of the present invention is achieved through the following technical solutions: a multifunctional spraying device, comprising a spray gun main body, an air intake adapter assembly for air intake is provided on the spray gun main body, a nozzle assembly is provided at the air outlet end of the spray gun main body, and a flow regulating assembly is provided between the nozzle assembly and the air intake adapter assembly; a liner mounting seat is fixedly installed in the spray gun main body, and a valve switch assembly is provided on the liner mounting seat; a detachable air bag is provided on the top of the spray gun main body, and a detachable material storage bag is provided in a chamber surrounded by the air bag; the material storage bag is connected to the nozzle assembly, and the air bag is connected to the air intake adapter assembly through the valve switch assembly; a feed interface is provided on the nozzle assembly, and a stroke regulating switch threadedly connected to the rear of the spray gun main body is provided; a toggle switch assembly is also provided in the spray gun main body, and the toggle switch assembly includes a trigger and a lever, and when the trigger is rotated relative to the spray gun main body, the lever is retracted relative to the nozzle assembly.

[0005] Preferably, the toggle switch assembly also includes a connecting shaft, a sealing ring, a sealing sleeve and a return spring; the trigger is rotatably connected to the spray gun body, and the connecting shaft is slidably connected to the spray gun body; the trigger is slidably inserted into the connecting shaft, and the connecting shaft is fixedly connected to the lever; the lever is slidably inserted into the liner mounting seat, and the lever is provided with a retaining ring, and the return spring is arranged between the retaining ring and the step of the liner mounting seat; the handle of the spray gun body is provided with an anti-mistaken touch switch assembly rotatably connected to it.

[0006] Preferably, a rotating part for mounting a trigger is provided in the spray gun body, and the outer contour of the rotating part is matched with the outer contour of the trigger; a first limit groove for mounting a connecting shaft is provided in the spray gun body; a stroke adjustment switch is provided at the tail of the spray gun body coaxially with the connecting shaft, and the stroke adjustment switch moves relative to the connecting shaft when the stroke adjustment switch is rotated; a slot is provided on the connecting shaft, and a ring protrusion is provided at the tail of the lever, and the ring protrusion is fixedly installed in the slot; the anti-mistouch switch assembly includes a limit stop rod and a torsion spring, the limit stop rod is rotatably connected to the spray gun body, and the torsion spring is arranged between the spray gun body and the limit stop rod; in a default state, the end of the limit stop rod abuts against the outer wall of the trigger.

[0007] Preferably, a threaded connection section is provided on the outer side of the side opening end of the liner mounting seat, and the threaded connection section is hollow, and a valve switch assembly is provided in the liner mounting seat; the valve switch assembly includes a limit sleeve, a valve core and a first spring, and the limit sleeve is fixedly installed on the opening end of the liner mounting seat; the valve core is arranged in the threaded connection section and facing the limit sleeve, and the first spring is arranged between the valve core and the step of the liner mounting seat.

[0008] Preferably, the spray gun body is provided with a nozzle assembly connected to the spray gun body with a snap fit, the nozzle assembly comprising a nozzle housing and a nozzle core; a sealing ring and a sealing sleeve are provided at the open end of the nozzle housing, the sealing ring is clamped on the step of the nozzle housing, and the sealing sleeve is fitted on the sealing ring; a sealing bead is fixedly installed at the end of the lever, the nozzle core is arranged in the nozzle housing, a first sealing member is provided on the nozzle core, and the sealing bead is arranged adjacent to the first sealing member.

[0009] Preferably, the outside of the spray gun body is provided with a push-pull box body detachably connected to it; the push-pull box body is provided with a paint tank, a fan and a pump body; the nozzle housing is provided with a feed interface connected to the inner core of the nozzle, and the feed interface and the bottom of the paint tank are provided with a first pipeline connecting the two, and the feed interface and the first pipeline are detachably connected; a second pipeline connecting the two is provided between the fan and the air intake adapter assembly; the inside of the push-pull box body is provided with a pressure switch and a three-way joint, the top of the paint tank is provided with a first inlet, the first end of the three-way joint is connected to the first inlet, the second end of the three-way joint is connected to the pump body, and the third end of the three-way joint is connected to the pressure switch; the nozzle assembly also includes a first nozzle head, the first nozzle head is installed on the nozzle housing, and the first nozzle head is provided with a plurality of first discharge holes distributed in an annular manner; the side of the paint tank is provided with a placement barrel body arranged side by side with it.

[0010] Preferably, a cover assembly is provided at the open end of the paint tank; the cover assembly includes an upper cover body, a locking handle, a locking seat, a limit bayonet and a pressure relief valve; the upper cover body is hinged to the paint tank, and a first mounting seat and a second mounting seat are respectively provided on the upper cover body, and the ends of the locking handle are respectively inserted in the first mounting seat and the second mounting seat; a limit bayonet is provided between the first mounting seat and the second mounting seat bracket, and a locking seat is fixedly installed on the paint tank, and the locking seat is arranged close to the first mounting seat; a pressure relief valve is provided on the upper cover body; a detachable air bag is provided above the spray gun body, and a storage bag is provided in the air bag; a third pipeline connecting the air bag and the liner mounting seat is provided between the air bag and the liner mounting seat, and the valve switch assembly is in an open state when the third pipeline is installed on the liner mounting seat; a detachable fourth pipeline is provided between the storage bag and the feed interface.

[0011] Preferably, the outside of the spray gun body is provided with a push-pull box body detachably connected to it, and a fan is arranged in the push-pull box body, and a second pipeline connecting the fan and the air intake adapter assembly is arranged between the two; an air bag detachably connected to it is arranged on the top of the spray gun body, and a storage bag is arranged in the air bag; a feed interface connected to the inner core of the nozzle is arranged on the nozzle shell, and a fourth pipeline connecting the two is arranged between the feed interface and the storage bag; a liner mounting seat is arranged in the spray gun body, and a valve switch assembly is arranged at the open end of the liner mounting seat, and a third pipeline connecting the two is arranged between the air bag and the liner mounting seat; an adapter threadedly connected to it is arranged at the open end of the liner mounting seat, and the adapter and the third pipeline are connected to each other; a flow regulating assembly is also arranged in the liner mounting seat, and the flow regulating assembly includes a knob and a baffle; the knob and the baffle are fixedly connected, and the knob is arranged between the liner mounting seat and the inner wall of the spray gun body.

[0012] Preferably, a threaded connection section is provided at the side open end of the liner mounting seat, and the threaded connection section is hollow. A valve switch assembly is provided in the threaded connection section of the liner mounting seat; the valve switch assembly comprises a limit sleeve, a valve core and a first spring, and the limit sleeve is fixedly mounted on the open end of the liner mounting seat; the valve core is arranged in the threaded connection section and facing the limit sleeve, and the first spring is arranged between the steps of the valve core and the liner mounting seat; the adapter is threadedly connected to the threaded connection section, and a ejector pin is provided on the end of the adapter facing the valve core, and when the adapter is threadedly connected to the liner mounting seat, the ejector pin pushes the valve core out of the limit sleeve; the valve core is a rubber part.

[0013] Preferably, the push-pull box body is also provided with a pair of placement barrels, and a pair of fans are provided below the placement barrels, and the two fans are connected to each other; the open end of the spray gun body is provided with a nozzle assembly connected to the flow regulating assembly, and the nozzle assembly includes a nozzle shell and a nozzle core, and a second nozzle head is also provided between the nozzle shell and the nozzle core; the second nozzle head is rotatably connected to the nozzle shell; the second nozzle head is provided with a pair of second discharge holes, and the second nozzle head is also provided with a pair of toggle protrusions.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The spray gun body of the present invention can be selectively connected to a paint tank or an air bag, and the discharging mode can be switched freely; when spraying water-based sand paint, the spraying area is often large, so the paint tank is selected for discharging; when the spraying range is small and the spraying is relatively fine, the air bag is used for extrusion discharging; 2. The paint tank, fan, pump body and placement barrel are all integrated and placed in a push-pull box body, which is convenient to carry and convenient to switch the spraying working position; 3. The flow regulating component can be used to conveniently control the size of the air intake; at the same time, the stroke regulating switch is used to limit the left and right strokes of the lever, so that the discharge amount of the nozzle assembly can be accurately adjusted, and the versatility is good; 4. The valve switch component can conveniently control the connection state between the spray gun body and the air bag, and the valve switch component automatically opens when the air bag is connected; 5. The anti-mistouch switch component can jam the trigger in the unused state to avoid accidental spraying of paint when the trigger is pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of the present invention; Figure 2 It is the internal structure diagram of the present invention; Figure 3 It is a schematic diagram of the assembled state of the paint can and the cover assembly of the present invention; Figure 4 A perspective view of the first nozzle tip used when installing the air bag to the spray gun body; Figure 5 It is a three-dimensional picture of the spray gun body without the air bag installed; Figure 6 This is an exploded view of the spray gun body without the air bag installed; Figure 7 Exploded view of installing the air bag to the spray gun body; Figure 8 This is an exploded view of the valve switch assembly; Fig. 9 It is the internal structure diagram of the present invention; Fig.10 The internal structure diagram of the present invention is to install the air bag and the first nozzle head; Fig.11 is a three-dimensional diagram of a first nozzle head; Fig.12 A schematic diagram of the working state of the second embodiment of the present invention; Fig.13 A three-dimensional view of the spray gun body with the air bag and the second nozzle head installed; Fig.14 The internal structure diagram of the present invention is to install the air bag and the second nozzle head; Fig.15 is a three-dimensional diagram of a second nozzle head; Markings in the figure: 1. Spray gun body; 2. Air inlet adapter assembly; 3. Nozzle assembly; 31. Feed interface; 32. Nozzle housing; 33. Nozzle core; 34. First sealing member; 35. First nozzle head; 36. First discharge hole; 4. Flow adjustment assembly; 41. Knob; 42. Baffle; 5. Liner mounting seat; 51. Threaded connection section; 6. Valve switch assembly; 61. Limit sleeve; 62. Valve core; 63. First spring; 7. Air bag; 8. Storage bag; 9. Toggle switch assembly; 91. Trigger; 92. Lever; 93. Connecting shaft; 94. Sealing ring; 95. Sealing sleeve; 96. Reset spring; 97. Baffle ring; 98. Slot; 99. Annular protrusion; 910. Sealing bead; 10. Stroke adjustment switch ;11. Anti-accidental touch switch assembly;111. Limit stop bar;112. Torsion spring;12. Rotating part;13. First limit groove;14. Push-pull box;15. Paint tank;16. Fan;17. Pump body;18. First pipeline;19. Second pipeline;20. Pressure switch;21. Three-way joint;22. First inlet;23. Place barrel body;24. Cover assembly;241. Upper cover body;242. Locking handle;243. Locking seat;244. Limit bayonet;245. Pressure relief valve;246. First mounting seat;247. Second mounting seat;25. Third pipeline;26. Adapter;261. Ejector pin;27. Second nozzle head;271. Second discharge hole;272. Toggle protrusion;28. Fourth pipeline. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: Example 1 like Figure 1-11 As shown, the present embodiment discloses a multifunctional spraying device, comprising a spray gun body 1, on which an air intake adapter assembly 2 for air intake is provided, a nozzle assembly 3 is provided at the air outlet end of the spray gun body 1, and a flow regulating assembly 4 is provided between the nozzle assembly 3 and the air intake adapter assembly 2; a liner mounting seat 5 is fixedly installed in the spray gun body 1, and a valve switch assembly 6 is provided on the liner mounting seat 5; a detachable air bag 7 is provided on the top of the spray gun body 1, and a detachable material storage bag 8 is provided in a chamber surrounded by the air bag 7; the material storage bag 8 is connected to the nozzle assembly 3, and the air bag 7 is connected to the air intake adapter assembly 2 through the valve switch assembly 6; a feed interface 31 is provided on the nozzle assembly 3, and a stroke regulating switch 10 threadedly connected thereto is provided at the tail of the spray gun body 1; a toggle switch assembly 9 is also provided in the spray gun body 1, and the toggle switch assembly 9 includes a trigger 91 and a lever 92, and when the trigger 91 rotates relative to the spray gun body 1, the lever 92 is retracted relative to the nozzle assembly 3.

[0017] The toggle switch assembly 9 also includes a connecting shaft 93, a sealing ring 94, a sealing sleeve 95 and a reset spring 96; the trigger 91 is rotatably connected to the spray gun body 1, and the connecting shaft 93 is slidably connected to the spray gun body 1; the trigger 91 is slidably inserted into the connecting shaft 93, and the connecting shaft 93 is fixedly connected to the lever 92; the lever 92 is slidably inserted into the liner mounting seat 5, and the lever 92 is provided with a retaining ring 97, and the reset spring 96 is arranged between the retaining ring 97 and the step of the liner mounting seat 5; the handle of the spray gun body 1 is provided with an anti-mistaken touch switch assembly 11 rotatably connected to it. A rotating part 12 for mounting a trigger 91 is provided in the spray gun body 1, and the outer contour of the rotating part 12 is adapted to the outer contour of the trigger 91; a first limit groove 13 for mounting a connecting shaft 93 is provided in the spray gun body 1; a stroke adjustment switch 10 is provided at the tail of the spray gun body 1 coaxially with the connecting shaft 93, and when the stroke adjustment switch 10 is rotated, the stroke adjustment switch 10 moves relative to the connecting shaft 93; a slot 98 is provided on the connecting shaft 93, and a ring protrusion 99 is provided at the tail of the lever 92, and the ring protrusion 99 is fixedly installed in the slot 98; the anti-mistouch switch assembly 11 includes a limit stop rod 111 and a torsion spring 112, the limit stop rod 111 is rotatably connected to the spray gun body 1, and the torsion spring 112 is arranged between the spray gun body 1 and the limit stop rod 111; in the default state, the end of the limit stop rod 111 abuts against the outer wall of the trigger 91. A threaded connection section 51 is provided on the outer side of the side opening end of the liner mounting seat 5, and the threaded connection section 51 is hollow. A valve switch assembly 6 is provided in the liner mounting seat 5; the valve switch assembly 6 includes a limiting sleeve 61, a valve core 62 and a first spring 63, and the limiting sleeve 61 is fixedly installed on the opening end of the liner mounting seat 5; the valve core 62 is arranged in the threaded connection section 51 and facing the limiting sleeve 61, and the first spring 63 is arranged between the valve core 62 and the step of the liner mounting seat 5. The spray gun body 1 is provided with a nozzle assembly 3 connected with the spray gun body 1 by a snap, and the nozzle assembly 3 includes a nozzle housing 32 and a nozzle core 33; a sealing ring 94 and a sealing sleeve 95 are provided at the open end of the nozzle housing 32, the sealing ring 94 is stuck on the step of the nozzle housing 32, and the sealing sleeve 95 is fitted on the sealing ring 94; a sealing bead 910 is fixedly installed at the end of the lever 92, the nozzle core 33 is arranged in the nozzle housing 32, a first sealing member 34 is provided on the nozzle core 33, and the sealing bead 910 is arranged adjacent to the first sealing member 34.The outside of the spray gun body 1 is provided with a push-pull box body 14 detachably connected to it; the push-pull box body 14 is provided with a paint tank 15, a fan 16 and a pump body 17; the nozzle housing 32 is provided with a feed interface 31 connected to the nozzle inner core 33, and the feed interface 31 and the bottom of the paint tank 15 are provided with a first pipeline 18 connecting the two, and the feed interface 31 and the first pipeline 18 are detachably connected; a second pipeline 19 connecting the fan 16 and the air intake adapter assembly 2 is provided between the two; the push-pull box body 14 is provided with a pressure switch 20 and a three-way joint 21, the A first inlet 22 is provided at the top of the paint tank 15, a first end of the three-way joint 21 is connected to the first inlet 22, a second end of the three-way joint 21 is connected to the pump body 17, and a third end of the three-way joint 21 is connected to a pressure switch 20, and the pressure switch 20 is used to relieve pressure to prevent excessive pressure in the paint tank 15; the nozzle assembly 3 also includes a first nozzle head 35, which is mounted on the nozzle housing 32, and a plurality of first discharge holes 36 distributed in an annular manner are provided on the first nozzle head 35; a placement barrel 23 is provided on the side of the paint tank 15 and is arranged side by side with the paint tank 15. The open end of the paint tank 15 is provided with a cover assembly 24; the cover assembly 24 includes an upper cover body 241, a locking handle 242, a locking seat 243, a limit bayonet 244 and a pressure relief valve 245; the upper cover body 241 is hinged to the paint tank 15, and a first mounting seat 246 and a second mounting seat 247 are respectively provided on the upper cover body 241, and the ends of the locking handle 242 are respectively inserted in the first mounting seat 246 and the second mounting seat 247; a limit bayonet 244 is provided between the first mounting seat 246 and the second mounting seat 247 brackets. 44. A locking seat 243 is fixedly mounted on the paint tank 15, and the locking seat 243 is arranged close to the first mounting seat 246; a pressure relief valve 245 is arranged on the upper cover body 241; a detachable air bag 7 is arranged above the spray gun body 1, and a storage bag 8 is arranged in the air bag 7; a third pipeline 25 connecting the air bag 7 and the liner mounting seat 5 is arranged between the air bag 7 and the liner mounting seat 5, and the valve switch assembly 6 is in an open state when the third pipeline 25 is installed on the liner mounting seat 5; a detachable fourth pipeline 28 is arranged between the storage bag 8 and the feed interface 31.

[0018] The specific operation process of this embodiment is as follows: in the default state, the trigger 91 is in an unpulled state under the action of the return spring 96, and the sealing bead 910 on the lever 92 just abuts against the first sealing member 34 of the nozzle inner core 33, so that the nozzle assembly 3 is in a closed state and the paint cannot be sprayed out; when the trigger 91 is pulled, the trigger rotates relative to the spray gun body 1, the return spring 96 is compressed, and the trigger 91 drives the lever 92 away from the first sealing member 34, so that the nozzle assembly 3 is in an open state; in the default state, the nozzle assembly 3 is in a closed state, the limit stopper 111 is in a horizontal state, and the limit stopper 111 just abuts against the trigger 91, and the trigger 91 cannot be moved. At this time, the limit stopper 111 needs to be pushed downward first, so that the inclined angle between the limit stopper 111 and the trigger 91 becomes smaller, and the trigger 91 can be freely moved back and forth. When large-scale spraying of water-bag sand is required, water-bag sand paint needs to be added to the paint tank 15; because the locking handle 242 is inserted into the locking seat 243 and the locking handle 242 is in the lowered state, the locking handle 242 cannot move axially relative to the locking seat 243, and the upper cover body 241 is in the closed state; when the upper cover body 241 needs to be opened to add paint, the locking handle 242 is turned and the locking handle 242 is pushed away from the locking seat 243, so that the upper cover body 241 can be opened; after adding the paint, the upper cover body 241 is closed and locked by the locking handle 242.

[0019] Then, the paint tank 15 is connected through the first pipeline 18, and the connection between the airbag 7 and the nozzle assembly 3 is disconnected; because the valve core 62 is squeezed by the first spring 18, the valve core 62 will be against the limit sleeve 61, the valve switch assembly 6 is in a closed state, and the gas can only enter the nozzle assembly 3. Then, the paint tank 15 is pressurized through the pump body 17, and the paint enters the nozzle assembly 3 from the bottom of the paint tank 15 along the first pipeline 18; at this time, the size of the air intake can be controlled by the flow regulating assembly 4, so that the spraying discharge speed can be accurately controlled.

[0020] When small-scale spraying is required, just place the paint in the storage bag 8, and then install the storage bag 8 into the airbag 7; connect the threaded connection section 51 through the adapter 26, so that the ejector pin 261 in the adapter 26 will push the valve core 62, so that the valve core 62 is away from the limiting sleeve 61, and the valve switch assembly 6 is in an open state, and then the airbag 7 and the adapter 26 are connected through the third pipeline 25; then the fan 16 is turned on, and the spray gun body 1 is pressurized through the second pipeline 19, and the gas enters the airbag 7 along the third pipeline 25; a storage bag 8 is provided in the chamber of the airbag 7, and the storage bag 8 is connected to the feed interface 31 of the nozzle assembly 3 through the fourth pipeline 28, so that the airbag 7 will squeeze the storage bag 8 when inflated, and the paint in the storage bag 8 will enter the nozzle assembly 3 along the fourth pipeline 28, and then be sprayed out from the first nozzle head 35.

[0021] Example 2 like Figure 12-15 As shown, the difference between this embodiment and embodiment 1 lies in the nozzle assembly and the fan. The nozzle assembly in this embodiment uses a second nozzle head, the discharge is more precise and the discharge direction can be adaptively adjusted; two fans are connected to each other, the air volume adjustment range is wider and the air volume is larger; the outside of the spray gun body 1 disclosed in this embodiment is provided with a push-pull box body 14 detachably connected to it, and a fan 16 is arranged in the push-pull box body 14, and a second pipeline 19 connecting the fan 16 and the air intake adapter assembly 2 is arranged between the two; the top of the spray gun body 1 is provided with an air bag 7 detachably connected to it, and a storage bag 8 is arranged in the air bag 7; the nozzle housing 32 is provided with a feed interface 31 connected to the nozzle inner core 33 A fourth pipeline 28 connecting the feed interface 31 and the storage bag 8 is provided between the two; a liner mounting seat 5 is provided in the spray gun body 1, and a valve switch assembly 6 is provided at the open end of the liner mounting seat 5, and a third pipeline 25 connecting the two is provided between the airbag 7 and the liner mounting seat 5; the open end of the liner mounting seat 5 is provided with a adapter 26 threadedly connected thereto, and the adapter 26 is communicated with the third pipeline 25; a flow regulating assembly 4 is also provided in the liner mounting seat 5, and the flow regulating assembly 4 includes a knob 41 and a baffle 42; the knob 41 and the baffle 42 are fixedly connected, and the knob 41 is arranged between the liner mounting seat 5 and the inner wall of the spray gun body 1. A threaded connection section 51 is provided at the side open end of the liner mounting seat 5, and the threaded connection section 51 is hollow. A valve switch assembly 6 is provided in the threaded connection section 51 of the liner mounting seat 5; the valve switch assembly 6 comprises a limiting sleeve 61, a valve core 62 and a first spring 63, and the limiting sleeve 61 is fixedly mounted on the open end of the liner mounting seat 5; the valve core 62 is arranged in the threaded connection section 51 and is arranged toward the limiting sleeve 61, and the first spring 63 is arranged between the valve core 62 and the step of the liner mounting seat 5; the adapter 26 is threadedly connected to the threaded connection section 51, and a ejector pin 261 is provided on the end of the adapter 26 facing the valve core 62, and when the adapter 26 is threadedly connected to the liner mounting seat 5, the ejector pin 261 pushes the valve core 62 out of the limiting sleeve 61; the valve core 62 is a rubber part. The push-pull box body 14 is also provided with a pair of placement barrel bodies 23, and a pair of fans 16 are provided below the placement barrel bodies 23, and the two fans 16 are connected to each other; the open end of the spray gun body 1 is provided with a nozzle assembly 3 connected to the flow regulating assembly 4, and the nozzle assembly 3 includes a nozzle shell 32 and a nozzle core 33, and a second nozzle head 27 is also provided between the nozzle shell 32 and the nozzle core 33; the second nozzle head 27 is rotatably connected to the nozzle shell 32; the second nozzle head 27 is provided with a pair of second discharge holes 271, and the second nozzle head 27 is also provided with a pair of toggle protrusions 272.

[0022] The specific operation process of this embodiment is as follows: when fine spraying is required, the paint is first loaded into the storage bag 8, and then the storage bag 8 is installed in the airbag 7; the airbag 7 is connected to the liner mounting seat 5 through the third pipeline 25, and an adapter 26 is provided between the third pipeline 25 and the liner mounting seat 5; when the adapter 26 is threadedly connected to the liner mounting seat 5, the ejector pin 261 in the adapter 26 pushes the valve core 62, so that the valve switch assembly 6 is always in an open state. Then, the spray gun body 1 is inflated and pressurized synchronously through two fans 16. Since the open end of the nozzle housing 32 is provided with a sealing ring 94 and a sealing sleeve 95, the nozzle assembly 3 is in a closed state when the trigger 91 is not pulled, and the paint cannot be sprayed out; when the trigger 91 is pulled, the lever 92 moves away from the nozzle core 33, so that the paint enters the second nozzle head 27 from the storage bag 8, and is finally sprayed out from the second discharge hole 271; here, the second nozzle head 27 can rotate relative to the nozzle housing 32, so that the spraying angle can be conveniently switched during the spraying process, and the versatility is better.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A multifunctional spraying device, comprising a spray gun body (1), characterized in that: An air intake adapter assembly (2) for air intake is provided on the spray gun body (1), a nozzle assembly (3) is provided at the air outlet end of the spray gun body (1), and a flow regulating assembly (4) is provided between the nozzle assembly (3) and the air intake adapter assembly (2); an inner liner mounting seat (5) is fixedly installed in the spray gun body (1), and a valve switch assembly (6) is provided on the inner liner mounting seat (5); a detachable air bag (7) is provided on the top of the spray gun body (1), and a detachable material storage bag (8) is provided in a chamber surrounded by the air bag (7); the material storage bag (8 ) is connected to the nozzle assembly (3), and the airbag (7) is connected to the air intake adapter assembly (2) through the valve switch assembly (6); the nozzle assembly (3) is provided with a feed interface (31), and the tail of the spray gun body (1) is provided with a stroke adjustment switch (10) threadedly connected thereto; the spray gun body (1) is also provided with a toggle switch assembly (9), and the toggle switch assembly (9) includes a trigger (91) and a lever (92), and when the trigger (91) is rotated relative to the spray gun body (1), the lever (92) is extended and retracted relative to the nozzle assembly (3).

2. The multifunctional spraying device according to claim 1, characterized in that: The toggle switch assembly (9) further comprises a connecting shaft (93), a sealing ring (94), a sealing sleeve (95) and a return spring (96); the trigger (91) is rotatably connected to the spray gun body (1), and the connecting shaft (93) is slidably connected to the spray gun body (1); the trigger (91) is slidably inserted into the connecting shaft (93), and the connecting shaft (93) is fixedly connected to the lever (92); the lever (92) is slidably inserted into the liner mounting seat (5), and a retaining ring (97) is provided on the lever (92), and the return spring (96) is arranged between the retaining ring (97) and the step of the liner mounting seat (5); the handle of the spray gun body (1) is provided with an anti-mistaken touch switch assembly (11) rotatably connected thereto.

3. The multifunctional spraying device according to claim 2, characterized in that: The spray gun body (1) is provided with a rotating part (12) for mounting a trigger (91), and the outer contour of the rotating part (12) is adapted to the outer contour of the trigger (91); the spray gun body (1) is provided with a first limit groove (13) for mounting a connecting shaft (93); the rear end of the spray gun body (1) is provided with a stroke adjustment switch (10) coaxially arranged with the connecting shaft (93); when the stroke adjustment switch (10) is rotated, the stroke adjustment switch (10) moves relative to the connecting shaft (93); the connecting shaft (93) is provided with a first limit groove (13) for mounting a connecting shaft (93); ) is provided with a slot (98), the tail of the lever (92) is provided with an annular protrusion (99), and the annular protrusion (99) is fixedly installed in the slot (98); the anti-mistouch switch assembly (11) comprises a limit stop rod (111) and a torsion spring (112), the limit stop rod (111) is rotatably connected to the spray gun body (1), and the torsion spring (112) is arranged between the spray gun body (1) and the limit stop rod (111); in a default state, the end of the limit stop rod (111) abuts against the outer wall of the trigger (91).

4. The multifunctional spraying device according to claim 2, characterized in that: A threaded connection section (51) is provided on the outer side of the side opening end of the liner mounting seat (5), and the threaded connection section (51) is hollow. A valve switch assembly (6) is provided in the liner mounting seat (5); the valve switch assembly (6) comprises a limiting shaft sleeve (61), a valve core (62) and a first spring (63); the limiting shaft sleeve (61) is fixedly mounted on the opening end of the liner mounting seat (5); the valve core (62) is arranged in the threaded connection section (51) and is arranged toward the limiting shaft sleeve (61), and the first spring (63) is arranged between the valve core (62) and the step of the liner mounting seat (5).

5. The multifunctional spraying device according to claim 2, characterized in that: The spray gun body (1) is provided with a nozzle assembly (3) which is snap-connected thereto, and the nozzle assembly (3) comprises a nozzle housing (32) and a nozzle core (33); a sealing ring (94) and a sealing shaft sleeve (95) are provided at the open end of the nozzle housing (32), the sealing ring (94) is snap-fitted onto the step of the nozzle housing (32), and the sealing shaft sleeve (95) is fitted onto the sealing ring (94); a sealing bead (910) is fixedly mounted on the end of the lever (92), the nozzle core (33) is arranged in the nozzle housing (32), a first sealing member (34) is provided on the nozzle core (33), and the sealing bead (910) is arranged adjacent to the first sealing member (34).

6. The multifunctional spraying device according to claim 5, characterized in that: The outside of the spray gun body (1) is provided with a push-pull box body (14) which is detachably connected to the spray gun body; the push-pull box body (14) is provided with a paint tank (15), a fan (16) and a pump body (17); the nozzle housing (32) is provided with a feed interface (31) which is connected to the nozzle inner core (33); the feed interface (31) and the bottom of the paint tank (15) are provided with a first pipeline (18) connecting the two, and the feed interface (31) and the first pipeline (18) are detachably connected; a second pipeline (19) connecting the two is provided between the fan (16) and the air intake adapter assembly (2); the push-pull box body (14) is provided with a pressure switch inside. (20) and a three-way joint (21), the top of the paint tank (15) is provided with a first inlet (22), the first end of the three-way joint (21) is connected to the first inlet (22), the second end of the three-way joint (21) is connected to the pump body (17), and the third end of the three-way joint (21) is connected to the pressure switch (20); the nozzle assembly (3) also includes a first nozzle head (35), the first nozzle head (35) is mounted on the nozzle housing (32), and the first nozzle head (35) is provided with a plurality of first discharge holes (36) distributed in an annular manner; and the side of the paint tank (15) is provided with a placement barrel (23) arranged side by side with the paint tank (15).

7. The multifunctional spraying device according to claim 6, characterized in that: The open end of the paint tank (15) is provided with a cover assembly (24); the cover assembly (24) comprises an upper cover body (241), a locking handle (242), a locking seat (243), a limit snap-on (244) and a pressure relief valve (245); the upper cover body (241) is hinged to the paint tank (15); a first mounting seat (246) and a second mounting seat (247) are respectively provided on the upper cover body (241); the ends of the locking handle (242) are respectively inserted into the first mounting seat (246) and the second mounting seat (247); a limit snap-on (244) is provided between the brackets of the first mounting seat (246) and the second mounting seat (247); 4), a locking seat (243) is fixedly mounted on the paint tank (15), and the locking seat (243) is arranged close to the first mounting seat (246); a pressure relief valve (245) is arranged on the upper cover body (241); a detachable air bag (7) is arranged above the spray gun body (1), and a material storage bag (8) is arranged in the air bag (7); a third pipeline (25) connecting the air bag (7) and the liner mounting seat (5) is arranged between the air bag (7) and the liner mounting seat (5), and when the third pipeline (25) is installed on the liner mounting seat (5), the valve switch assembly (6) is in an open state; a detachable fourth pipeline (28) is arranged between the material storage bag (8) and the feed interface (31).

8. The multifunctional spraying device according to claim 5, characterized in that: The spray gun body (1) is provided with a push-pull box body (14) on the outside thereof and is detachably connected thereto, a fan (16) is provided inside the push-pull box body (14), and a second pipeline (19) connecting the fan (16) and the air intake adapter assembly (2) is provided between the two. The top of the spray gun body (1) is provided with an air bag (7) detachably connected thereto, and a material storage bag (8) is provided inside the air bag (7). The nozzle housing (32) is provided with a feed interface (31) connected to the nozzle inner core (33), and a fourth pipeline (28) connecting the two is provided between the feed interface (31) and the material storage bag (8). The spray gun body (1) is provided with an inner liner mounting seat (5). The open end of the liner mounting seat (5) is provided with a valve switch assembly (6), and a third pipeline (25) connecting the airbag (7) and the liner mounting seat (5) is provided between the airbag (7) and the liner mounting seat (5); the open end of the liner mounting seat (5) is provided with an adapter (26) threadedly connected thereto, and the adapter (26) and the third pipeline (25) are in communication with each other; a flow regulating assembly (4) is also provided in the liner mounting seat (5), and the flow regulating assembly (4) comprises a knob (41) and a baffle (42); the knob (41) and the baffle (42) are fixedly connected, and the knob (41) is arranged between the liner mounting seat (5) and the inner wall of the spray gun body (1).

9. The multifunctional spraying device according to claim 8, characterized in that: A threaded connection section (51) is provided at the side opening end of the liner mounting seat (5); the threaded connection section (51) is hollow; a valve switch assembly (6) is provided in the threaded connection section (51) of the liner mounting seat (5); the valve switch assembly (6) comprises a limit sleeve (61), a valve core (62) and a first spring (63); the limit sleeve (61) is fixedly mounted at the opening end of the liner mounting seat (5); the valve core (62) is arranged in the threaded connection section (51) and faces the first spring (63). The adapter (26) is threadedly connected to the threaded connection section (51); a push pin (261) is provided on the end of the adapter (26) facing the valve core (62); when the adapter (26) is threadedly connected to the liner mounting seat (5), the push pin (261) pushes the valve core (62) away from the limit sleeve (61); and the valve core (62) is a rubber part.

10. The multifunctional spraying device according to claim 8, characterized in that: The push-pull box (14) is further provided with a pair of placement barrels (23), and a pair of fans (16) are provided below the placement barrels (23), and the two fans (16) are connected to each other; the open end of the spray gun body (1) is provided with a nozzle assembly (3) connected to the flow regulating assembly (4), and the nozzle assembly (3) includes a nozzle housing (32) and a nozzle inner core (33), and a second nozzle head (27) is further provided between the nozzle housing (32) and the nozzle inner core (33); the second nozzle head (27) is rotatably connected to the nozzle housing (32); the second nozzle head (27) is provided with a pair of second discharge holes (271), and the second nozzle head (27) is further provided with a pair of toggling protrusions (272).

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