A full-angle, large-volume spray gun

Abstract

The present invention discloses a full-angle, large-volume spray gun, comprising: a gun body, comprising a liquid supply portion and a spray portion; a piston assembly, movably and sealingly connected to the spray portion; a piston seat spray head provided on the piston assembly, an elastic opening and closing telescopic part movably provided inside the piston seat spray head, the elastic opening and closing telescopic part extending to the outside of the piston seat spray head and a rotating groove provided at the extended end; a head cap, movably and adjustable connected to the piston seat spray head; a spray hole provided on the head cap, an adjustable, variable spray structure formed between the head cap and the rotating groove. The full-angle, large-volume spray gun realizes spraying operations at different angles and a large stroke design. By providing a spring-type elastic opening and closing telescopic part, a linked setting of liquid supply, air intake, and liquid spraying is realized, and rapid sealing between the combing head and the liquid spraying channel can be achieved, with fast response speed and good sealing performance. No dripping or leakage occurs during the liquid supply and liquid spraying process.

Description

Technical Field

[0001] The invention relates to the technical field of spray devices, in particular to a full-angle and large-volume spray gun. Background Art

[0002] Spray guns have become an indispensable item in people's lives, especially spray guns used in spraying operations. Due to the different positional relationships of the spraying, the spray guns are required to have different spray angles. Most of the spray guns in the prior art can only achieve multi-angle forward spraying, and some can achieve reverse spraying. For example, the applicant's prior application (publication date October 27, 2020, publication number CN111822180A) for a spray gun includes: a gun body, the gun body is provided with a spray liquid channel and a pressure liquid channel interconnected; a nozzle part, a pressure chamber part, and the pressure chamber part includes a piston cylinder The spray gun comprises a body, a pressure chamber and a piston, wherein the piston sliding seal is arranged inside the pressure chamber and the suction action of the spray gun is realized by the air pressure change inside the pressure chamber; an air hole is opened on the piston along the axial direction from the outside of the piston to the middle position; a liquid connecting part, an opening and closing device is arranged inside the liquid connecting part; a reverse spray device that realizes the spray gun's forward spray, reverse spray and 360-degree oblique side spray functions is sealed and plugged into the side of the opening and closing device facing the liquid container; an air and liquid inlet that is respectively connected to the pressure liquid channel and the opening and closing device is provided on the side wall of the bottom of the pressure chamber facing the liquid connecting part.

[0003] Although the prior application also achieves forward spray, reverse spray, 360-degree oblique side spray, as well as spray or foam spray and line spray functions, and can effectively prevent child operation and prevent liquid spillage during transportation, the spray gun has a hysteresis in the position linkage between the injection channel and the piston assembly, which limits the spray volume of the spray gun. Due to the hysteresis of the linkage, the sealing performance during use does not achieve the expected effect, and some dripping still occurs. In addition, the spray shape of the spray gun cannot be adjusted at will.

[0004] In response to the above problems, a full-angle, large-volume spray gun with good sealing performance is specially designed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems of slow resetting, sealing problems, limited spray volume, and the inability to adjust the spray angle shape at will due to the existence of linkage hysteresis in the use of existing spray guns, as well as the inability to achieve the requirement of full-angle leakage-free spraying operation in three-dimensional space. A full-angle and large-volume spray gun is provided, which has an all-plastic environmentally friendly structure, can achieve full-angle forward and reverse spraying without leakage operation in three-dimensional space, can achieve variable spraying with arbitrary adjustment of the spray angle and arbitrary change of the spray state, and can achieve large-stroke design and large-volume spraying, with rapid linkage response, fast resetting and good sealing performance.

[0006] The technical solution adopted by the present invention to achieve its invention object is: a full-angle large-spray volume spray gun, comprising:

[0007] The gun body includes an upper liquid part and a spray part;

[0008] A piston assembly is movably sealed and connected to the spraying portion; a piston seat nozzle is provided on the piston assembly, an elastic opening and closing telescopic member is movably provided inside the piston seat nozzle, and the elastic opening and closing telescopic member extends to the outside of the piston seat nozzle and a rotation groove is provided on the extended end;

[0009] The head cap is movably connected to the piston seat nozzle; the head cap is provided with a spray hole, and an adjustable variable spray structure is formed between the head cap and the rotating groove.

[0010] The full-angle, large-volume spray gun adopts a structure that directly sprays through a piston assembly. The piston assembly is directly set on the spraying part of the gun body, and a piston seat nozzle is set on the piston assembly. The liquid spraying operation is directly performed through the piston seat nozzle. Such a structure enables rapid linkage in the liquid spraying process, the liquid spraying speed is fast and the liquid spraying operation is simple. Moreover, the piston assembly is a direct spraying structure, and the stroke of the piston assembly can be set according to the spraying amount, which can achieve a large spraying amount design and increase the spraying amount. Moreover, due to the direct spraying of the piston assembly, the liquid spraying channel can be more precise and short, and the liquid from the liquid to the spraying is not limited by the channel length, thereby ensuring the spraying amount and being able to reach the set spraying amount. At the same time, an elastic opening and closing telescopic part is set inside the piston nozzle as a valve part for opening and closing the spraying channel. Through the elastic telescopic structure of the elastic opening and closing telescopic part, it can be quickly reset during the process of the piston assembly compressing the liquid spraying, and the spraying channel can be closed in time. The sealing performance is good and there will be no problems such as leakage and dripping. Since the spray gun will be used in different spraying places to meet the spraying requirements of different purposes, different liquid spraying angles and spraying shapes will be required. For this purpose, a rotating groove is provided on the elastic opening and closing telescopic part, and an adjustable variable spraying structure is formed between the rotating groove and the head cap. In this way, the angle and spraying shape of the liquid spray can be adjusted by adjusting the distance between the head cap and the rotating groove. When the spacing between the head cap and the rotating groove is adjusted to the minimum, the angle of liquid spraying is the largest, and a mist spraying structure is formed between it and the head cap. When the spacing between the head cap and the rotating groove is adjusted to be larger, the angle of liquid spraying becomes smaller, and finally the spraying angle can be made into a linear spray. By arbitrarily adjusting the spacing between the head cap and the rotating groove, the selection of spraying structures of different angles and shapes can be realized. This full-angle and large-volume spray gun can realize spraying operations at different angles through the setting of the adjustable variable spraying structure, meeting different spraying requirements. It sprays directly through the piston assembly, realizing a large stroke design, and meeting the large-volume design requirements. By setting up a spring-type elastic opening and closing telescopic part, the linkage setting of liquid application, air intake and liquid spraying is realized, which can achieve rapid sealing between the combing head and the liquid spraying channel, with fast response speed and good sealing performance. No dripping or leakage will occur during the liquid application and spraying process.

[0011] Preferably, the elastic opening and closing telescopic part is a combing head with an all-plastic spring structure, including a combing sealing seat body for realizing the opening and closing of the injection channel, the combing sealing seat body is connected to a combing channel body for forming multiple channels, the combing channel body is connected to a combing spring body, the combing spring body is connected to a combing head body, a combing liquid outlet channel is provided inside the combing head body, a core column is provided inside the combing liquid outlet channel, and the rotating groove is provided on the core column. The combing head adopts an all-plastic spring structure, and can preferably adopt an integrated injection molding structure. The combing head is provided with a combing sealing seat body for realizing rapid opening and rapid reset sealing of the piston seat nozzle. In order to increase the reset speed, a combing spring body is integrated into the combing head. The elastic force of the spring and the internal and external pressure difference can enable the combing sealing seat to quickly close the piston seat nozzle, thereby realizing sealing of the liquid and ensuring that the liquid will not drip through the piston seat nozzle regardless of whether the spray gun is in a forward spraying state or a reverse spraying state. A combing head body is integrally connected to the combing spring body, and a combing liquid channel is provided inside the combing head body. A core column for forming a rotating groove is provided inside the combing liquid channel. The liquid outlet angle and the spraying state are controlled by the combing liquid channel and the rotating groove to achieve multi-angle and multi-structure spraying requirements.

[0012] Preferably, the combing sealing seat, combing channel body, combing spring body and combing head body are coaxially arranged, and a liquid spraying combing structure is formed between the combing liquid outlet channel inside the combing head body and the core column and the rotating groove.

[0013] Preferably, a piston assembly cavity is provided inside the injection part, and the piston assembly includes a piston seat, a piston and an all-plastic spring. The piston is connected to the piston seat and is driven by the piston seat to slide sealedly inside the piston assembly cavity. A piston seat cavity is provided inside the piston; a spring cavity is provided inside the all-plastic spring, and the all-plastic spring is sealed and pressed between the piston seat cavity and the piston assembly cavity, forming an elastic variable diameter liquid spraying channel inside the all-plastic spring. In order to realize the setting of the direct injection structure of the piston assembly, the piston assembly cavity is directly provided inside the injection part, and the piston assembly and the piston assembly cavity are slidably connected to form a piston structure. Since the piston assembly cavity is directly provided inside the injection part, the stroke of the piston assembly cavity can be arbitrarily set as needed, which can meet the space requirements of the large injection stroke design. The piston assembly mainly includes a piston seat, inside which is arranged a piston which is in sliding sealing cooperation with the piston assembly cavity, and inside the piston is arranged a full-plastic spring with a spring cavity, which serves as a liquid channel. The spring cavity is changed by compression and expansion of the full-plastic spring, thereby changing the cavity diameter of the liquid channel, thereby forming an elastic variable diameter injection channel inside the full-plastic spring, realizing the requirement of layered sealing setting of the piston assembly cavity and the liquid channel, and realizing the design of the direct injection structure of the piston assembly, which saves time and effort in operation and has a good injection effect.

[0014] Preferably, a gas channel is provided on the upper edge of the injection portion in a direction parallel to the piston assembly cavity, and a corresponding gas valve is integrally provided on the piston seat. The gas valve is driven by the piston seat to open and close the seal inside the gas channel. The spray gun requires liquid injection operation during operation. In order to achieve the change of the pressure difference between the inside and outside of the liquid container, a gas channel is provided on the injection portion. At the same time, an gas valve is integrally provided on the piston seat. The piston seat drives the gas valve to move together during the compression and resetting process, thereby realizing the opening and closing operation of the gas channel, facilitating the change of the internal air pressure of the liquid container, and ensuring the normal operation of liquid injection. The linkage design structure can ensure a high degree of coordination of various operations without lag, and will not cause unresponsive operations. The liquid injection speed is fast, the injection effect is good, and the sealing is not timely, resulting in dripping liquid.

[0015] Preferably, the piston seat spray head is integrally mounted on the piston seat, with a spray chamber connected to the piston seat chamber disposed therein. The combing head is disposed within the spray chamber and forms an on-off spray structure with the piston seat chamber. This arrangement of the combing head within the spray chamber and forming an on-off spray structure with the spray chamber fulfills the multifunctional requirements of the combing head, enabling a single component to perform multiple functions, effectively reducing the number of components and simplifying the spray gun structure.

[0016] Preferably, the adjustable variable spray structure changes the liquid spray state by rotating the head cap in and out to change the distance between the head cap and the rotating groove.

[0017] Preferably, the upper liquid portion is provided with a pinball seat, a seat body channel is provided inside the pinball seat, a connector is provided inside the pinball seat, a connector channel is provided inside the connector, and the connector channel is connected with the seat body channel to form an upper liquid channel. The upper liquid portion is used to suck the liquid inside the liquid container into the upper liquid portion and then spray it out through the spray portion. Therefore, a pinball seat is provided inside the upper liquid portion, the pinball seat is used to form an upper liquid channel and an upper liquid switch, the seat body channel is provided inside the pinball seat, and a connector is provided inside the pinball seat, the connector channel is provided inside the connector, and the connector channel and the seat body channel form an upper liquid channel for realizing the liquid filling operation.

[0018] Preferably, a gun body air passage is disposed within the upper end of the upper liquid portion, a ball base air cavity is formed between the connector and the inner wall of the ball base, and an air hole is disposed on the upper portion of the ball base, connecting the ball base air cavity and the gun body air passage. The gun body air passage, the ball base air cavity, and the air hole form an air inlet passage to achieve a change in the pressure differential between the inside and outside of the liquid container.

[0019] Preferably, a valve-type sealing structure is formed between the top of the ball seat and the upper liquid portion, and the valve-type sealing structure cooperates with a liquid outlet valve ball to form a liquid supply valve. The valve-type sealing structure is formed between the top of the ball seat and the upper liquid portion to realize the on-off operation between the liquid supply and liquid spraying processes.

[0020] Preferably, the connector is provided with a liquid inlet for supplying liquid and an air pipe for supplying air. The liquid inlet is provided to facilitate the liquid in the liquid container to flow through the liquid inlet into the interior of the gun body and finally be sprayed out from the head cap during the liquid supply process, while the air pipe is provided to achieve communication between the external air and the interior of the liquid container, thereby changing the pressure difference between the interior and the exterior of the liquid container.

[0021] Preferably, the bottom of the upper liquid section is provided with an annular inner plug structure for forming a sealed plug-like connection with the liquid container. A sealing gasket is provided on the outer wall of the inner plug structure, and the sealing gasket and the inner plug structure form a double seal structure. The double seal structure provides a double seal connection between the liquid container and the gun body, ensuring that there will be no leakage during transportation and use, regardless of whether the liquid container is in the forward or reverse spraying state.

[0022] Preferably, the lower end of the upper liquid portion is provided with a full-angle upper liquid valve assembly for realizing full-angle spraying of the forward spray and the forward spray; the full-angle upper liquid valve assembly is provided with a full-angle upper liquid channel, a forward spray liquid inlet pipe and a reverse spray valve connected to the full-angle upper liquid channel. The full-angle upper liquid valve assembly is provided on the upper liquid portion, which can realize full-angle forward spray and reverse spraying in a three-dimensional space of 360 degrees without dead angles, and the user can operate it at will. The reverse spray valve is provided to ensure that reverse spraying can be realized without affecting the forward spraying. The reverse spray valve is in a closed state during the forward spraying process, and the liquid is sprayed through the forward spray liquid inlet pipe to realize the upper liquid spraying operation without affecting the upper liquid effect. When in the reverse spraying state, the reverse spray valve is opened, and the liquid is sprayed through the reverse spray valve, which effectively solves the problem that reverse spraying cannot be realized in the prior art.

[0023] Preferably, the reverse jet valve comprises a reverse jet valve seat and a reverse jet valve ball. A reverse jet liquid channel is disposed within the reverse jet valve seat, which is opened and closed with the full-angle upper liquid channel via the reverse jet valve ball. A liquid inlet groove is provided on the reverse jet valve seat. This structure of the reverse jet valve enables rapid opening and closing of the reverse jet upper liquid channel. The liquid inlet groove can be a trough-shaped structure or a filter mesh structure with a filtering function, thereby preventing liquid foreign matter from clogging the reverse jet upper liquid channel.

[0024] Preferably, the forward spray liquid inlet pipe and the full-angle liquid supply channel are connected to form a forward spray liquid supply channel, and the reverse spray liquid channel is connected to the full-angle liquid supply channel to form a reverse spray liquid supply channel. Forward spray and reverse spray pass through the forward spray liquid supply channel and the reverse spray liquid supply channel, respectively. This design satisfies the requirement that the liquid supply position changes due to the change in liquid position during the upright and inverted placement of the liquid container, and can achieve smooth liquid supply operations for both forward and reverse spray.

[0025] Preferably, a filter base is further included, wherein a plurality of filter holes are provided inside the filter base. In order to prevent foreign matter in the liquid from clogging the liquid supply channel during the positive spraying process, a filter base is provided at the bottom of the liquid inlet pipe, and the filter holes on the filter base are used to remove foreign matter in the liquid, thereby ensuring smooth liquid supply.

[0026] Preferably, the gun further comprises a trigger, the trigger being provided with a travel aperture through which the piston assembly passes and is driven by the trigger to perform the liquid spraying motion. To accommodate the piston assembly spraying structure, the trigger is provided with an arcuate travel aperture to increase the trigger stroke, thereby ensuring the design requirement for high-volume spraying. Due to the use of the piston assembly for direct spraying, a sufficient travel operating space between the trigger and the liquid supply portion of the gun body allows for a greater, even maximum, trigger stroke, thus meeting the design requirement for high-volume spraying.

[0027] The beneficial effects of the present invention are as follows: the full-angle, large-volume spray gun realizes the linkage setting of liquid application, air intake, and liquid spraying by setting a spring-type combing head and a piston seat. Since the combing head adopts a spring structure, it can realize rapid sealing between the combing head and the liquid spraying channel, with fast response speed and good sealing performance. No dripping or leakage will occur during the liquid application and liquid spraying process. At the same time, since a variable spraying structure is provided between the combing head and the head cap, the spraying state can be changed by rotating the head cap, the spraying angle can be arbitrarily adjusted, the spraying state can be arbitrarily changed, and different spraying states such as spraying and spraying lines can be easily selected to meet the spraying needs of different users. By setting a full-angle liquid application valve assembly, the spray gun space is 360 degrees without dead angles, and can be rotated upright or inverted in three dimensions, and the spraying operation can be performed at any position, which greatly improves the practicality of the product without leakage or dripping. The double-sealed structure achieves a seal with the liquid container, effectively isolating the liquid container from the outside world and effectively improving sealing performance. Whether tilted, tilted, or inverted, the seal will not fail. The multi-layered connection between the gun body and the liquid container ensures reliable and airtight sealing, preventing liquid from spilling or leaking. The overall sealing, rapid shutoff capability, and isolation performance are excellent. The all-plastic, environmentally friendly structure enables full recovery and is environmentally friendly and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a structural schematic diagram of the full-angle and large-volume spray gun of the present invention;

[0029] FIG2 is a cross-sectional view of the full-angle, high-volume spray gun of the present invention;

[0030] FIG3 is a schematic diagram of an exploded structure of a full-angle, high-volume spray gun according to the present invention;

[0031] FIG4 is a schematic structural diagram of a piston seat in the present invention;

[0032] Figure 5 This is a structural schematic diagram of the combing head of the present invention;

[0033] Figure 6 This is a structural diagram of the combing head of the present invention from another angle;

[0034] Figure 7 This is a structural schematic diagram of the head cap and the combing head in a tightened state in the present invention;

[0035] Figure 8 This is a structural diagram of the head cap and the combing head in the present invention in a loosened state;

[0036] Figure 9 This is a side elevation view of the gun body of the present invention;

[0037] Figure 10 This is a structural schematic diagram of the full-angle liquid filling valve assembly of the present invention;

[0038] Figure 11 This is a top view of the filter base of the present invention;

[0039] Figure 12 This is a schematic diagram of the structure of the present invention for positively spraying compressed air;

[0040] Figure 13 This is a structural diagram of the present invention that sprays liquid;

[0041] Figure 14 This is a schematic diagram of a structure in which gas is injected into the present invention;

[0042] Figure 15 It is a structural schematic diagram of the present invention that is ejecting liquid;

[0043] Figure 16 This is a structural diagram of the reverse injection of compressed air according to the present invention;

[0044] Figure 17 This is a structural diagram of the present invention's reverse spraying liquid;

[0045] Figure 18 This is a schematic diagram of a structure of the present invention in which gas is injected backward;

[0046] Figure 19 It is a structural schematic diagram of the present invention for spraying liquid backward;

[0047] Figure 20 This is a structural schematic diagram of a full-angle liquid filling valve assembly in Example 3 of the present invention;

[0048] In the figure: 1, gun body, 100, spray channel, 101, upper liquid part, 102, spray part, 103, trigger adapter plate, 104, adapter hole, 105, trigger guide guard, 106, ball seat socket, 107, reinforcement plate, 108, gun body air channel;

[0049] 200, positive spray liquid channel, 300, air flow channel, 400, reverse spray liquid channel, 500, liquid container, 600, variable spray structure;

[0050] 2. Trigger, 20. Trigger connection part, 21. Linkage slot, 22. Trigger operating part, 23. Rotation axis, 24. Travel hole;

[0051] 3. Thread ring, 31. Thread ring anti-rotation structure;

[0052] 4. Piston seat, 41. Piston seat cavity, 43. Air valve, 44. Trigger linkage, 45. Piston seat nozzle, 46. Spray cavity, 47. Trigger stopper, 48. Piston spray channel;

[0053] 5. Piston, 51. Piston push plane, 52. Spring seat, 53. Piston chamber;

[0054] 6. All-plastic spring, 61. Spring cavity;

[0055] 7. Head cap, 71. Jet hole;

[0056] 8. Combing head, 81. Combing sealing seat, 82. Combing channel, 83. Combing spring, 84. Combing head, 85. Combing liquid outlet channel, 86. Rotating groove, 87. Core column;

[0057] 9. Pinball seat, 900. Upper part of pinball seat, 901. Middle part of pinball seat, 902. Lower part of pinball seat, 903. Bottom of pinball seat, 904. Connecting plane, 905. Sealing ring, 91. Seat body channel, 92. Upper liquid valve body structure, 93. Liquid outlet valve ball, 94. Inner plug structure, 95. Air hole, 96. Connector socket, 97. Pinball seat air cavity;

[0058] 10. Sealing gasket;

[0059] 11. Gun body injection channel, 12. Piston assembly cavity, 13. Spring mounting seat, 14. Gas channel, 15. Sealing seat,

[0060] 16. Connector, 160. Connector channel, 161. Liquid inlet, 162. Air pipe, 163. Sealing disk;

[0061] 17. Full-angle liquid supply valve assembly, 170. Full-angle liquid supply channel, 171. Forward spray liquid inlet pipe, 172. Reverse spray valve, 173. Reverse spray valve seat, 174. Reverse spray valve ball, 175. Reverse spray liquid channel, 176. Liquid inlet tank;

[0062] 18. Liquid inlet straw, 19. Filter base, 190. Filter hole. DETAILED DESCRIPTION

[0063] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. The left and right mentioned in the present invention refer to the spray gun nozzle being perpendicular to the human body when spraying, and the up and down refer to the upper and lower parts of the spray gun in the upright position.

[0064] Example 1:

[0065] exist Figure 1 、 Figure 2 In the embodiment shown, a full-angle, large-volume spray gun comprises:

[0066] The gun body 1 includes an upper liquid portion 101 and a spray portion 102;

[0067] The piston assembly is movably sealed and connected to the injection portion 102; the piston assembly is provided with a piston seat nozzle 45, and the piston seat nozzle 45 is internally provided with an elastic opening and closing telescopic member, which extends to the outside of the piston seat nozzle and the extended end is provided with a rotation groove 86;

[0068] The head cap 7 is adjustably and movably connected to the piston seat nozzle 45; the head cap 7 is provided with a spray hole 71, and an adjustable variable spray structure is formed between the head cap 7 and the rotating groove 86.

[0069] like Figure 7 As shown, when the head cap 7 is tightened, the variable spray structure 600 changes, the atomization angle is large, and the distance is close. When the head cap 7 is tightened, it is tightly attached to the top of the separating head body 84, and the liquid flows out from the rotating groove 86 of the separating head body, so that the liquid is in a rotating atomizing spray state when it is sprayed out.

[0070] like Figure 8As shown, when the cap 7 is loosened, the variable spray structure 600 changes, the angle gradually decreases, the distance increases, and eventually becomes a straight spray. When the cap 7 is loosened, a gap appears between the cap 7 and the top of the combing head body. As the gap gradually increases, the rotating groove 86 at the top of the combing head body gradually loses its function, causing the spray angle to gradually decrease, and finally forming a straight spray, a linear spray state. At this time, the distance between the cap and the top of the combing head body can be adjusted as needed to determine the spray state, which can be mist, water mist, line mist, or straight line, etc.

[0071] Example 2:

[0072] exist Figure 1 、 Figure 2 、 Figure 3 The illustrated embodiment features a full-angle, high-volume spray gun. All components are made of plastic, achieving an all-plastic, environmentally friendly, and biodegradable design, significantly enhancing the product's recyclability and environmental performance. The full-angle, high-volume spray gun comprises a gun body 1, a trigger 2, and a threaded ring 3. The gun body 1 includes an upper liquid portion 101 and a spray portion 102. The threaded ring 3 is connected to the lower end of the upper liquid portion 101. The trigger 2 is rotatably connected to the upper end of the spray portion 102. A piston assembly is disposed between the trigger 2 and the spray portion 102.

[0073] The piston assembly is movably sealed and connected to the spraying portion 102; the piston assembly is provided with a piston seat nozzle 45, and an elastic opening and closing telescopic member is movably provided inside the piston seat nozzle 45. The elastic opening and closing telescopic member extends to the outside of the piston seat nozzle and the extended end is provided with a rotating groove 86; in this embodiment, the elastic opening and closing telescopic member is a fully plastic spring-type combing head;

[0074] The head cap 7 is adjustably and movably connected to the piston seat nozzle 45; the head cap 7 is provided with a spray hole 71, and an adjustable variable spray structure is formed between the head cap 7 and the rotating groove 86.

[0075] The piston assembly includes a piston seat 4, a piston 5, and an all-plastic spring 6. The piston seat 4 defines a piston seat cavity 41, the piston 5 defines a piston cavity 53, a spring seat 52 defines a piston injection passage 48, and a gas valve 43 is disposed on the piston seat 4, along the axial direction of the piston and parallel to the axis of the piston seat cavity 41. In this embodiment, the gas valve 43 is integrally formed with the piston seat 4 via a connecting rod.

[0076] The spray section 102 is internally provided with a gun body spray channel 11 and a piston assembly cavity 12, which are interconnected. A spring mounting seat 13 is provided within the piston assembly cavity 12, extending from the gun body spray channel 11 and communicating with the piston assembly cavity. A gas channel 14 is provided on the spray section 102, parallel to and below the piston assembly cavity 12. A gas valve 43 is provided within the gas channel 14, operating in a sealed manner via the piston seat. A sealing seat 15 is provided at the end of the gas channel 14. The sealing seat 15 cooperates with the gas valve 43. When the gas valve 43 is in the sealing seat 15 position, the gas valve 43 and the sealing seat 15 are sealed. When the gas valve 43 moves into the gas channel 14, the gas channel 14 is opened, communicating with the external air, allowing external air to enter the gun body through the gas channel. The gas channel 14 communicates with the gun body air cavity within the gun body.

[0077] The piston seat 4 is movably mounted within the piston assembly cavity 12. The all-plastic spring 6 is internally provided with a spring cavity 61. The all-plastic spring 6 is sealed and compressed between the piston cavity 53 and the piston assembly cavity 12. During compression, an elastically variable diameter spray channel is formed within the all-plastic spring 6. One end of the all-plastic spring 6 is sleeved onto the spring seat 52, and the other end is sleeved onto the spring mounting seat 13. The spring 6 is compressed or reset by the movement of the piston seat 4.

[0078] One end of the piston 5 is sealed and embedded in the piston seat cavity 41, and the other end of the piston 5 is movably and sealingly engaged with the piston assembly cavity 12, and is driven to slide within the piston assembly cavity 12 by the piston seat 4. The end of the piston 5 that engages with the piston assembly cavity is provided with a piston push surface 51, and the end of the piston seat is mounted on the piston push surface 51 and drives the piston 5 to move together.

[0079] like Figure 4 As shown, a trigger linkage 44 and a piston seat nozzle 45 are provided at one end of the piston seat 4 extending out of the piston assembly cavity 12. The trigger linkage 44 is symmetrically arranged on the outer wall of the piston seat 4. The trigger linkage 44 has a semicircular arc structure, and a linkage slot 21 is correspondingly provided on the trigger 2. The linkage slot 21 cooperates with the trigger linkage 44. When the trigger 2 is pulled downward, the trigger linkage 44 is driven to move together, thereby pushing the piston seat 4 to move inside the piston assembly cavity 12, thereby realizing the compression operation of the piston 5.

[0080] The piston seat spray head 45 is provided with a spray chamber 46 connected to the piston spray channel 48. The spray chamber 46, the piston spray channel 48, the spring cavity 61 and the gun body spray channel 11 together form a liquid spray channel 100.

[0081] A trigger stopper 47 is provided on the outside of the piston seat nozzle 45 near the end thereof, for limiting the position of the trigger 2 during the reset process, and preventing the trigger from being disengaged from the piston seat.

[0082] A cap 7 is threadedly connected to the end of the piston seat nozzle 45. The cap 7 can be screwed in and out along the axis of the piston seat nozzle 45 to adjust the distance between the cap 7 and the end of the piston seat nozzle 45, thereby adjusting the liquid discharge state. The cap 7 is provided with a spray hole 71. After passing through the spray channel 100, the liquid is finally sprayed out through the spray hole 71.

[0083] A combing head 8 is provided in the injection cavity 46 inside the piston seat nozzle 45. The combing head 8 adopts a full plastic spring structure. Figure 5 As shown, the combing head 8 includes a combing seal seat 81, a combing channel body 82 connected to the combing seal seat 81, a combing spring body 83 integrally connected to the combing channel body 82, and a combing head body 84 integrally connected to the combing spring body 83. A combing liquid outlet channel 85 is provided inside the combing head body 84, and a core column 87 is provided inside the combing liquid outlet channel 85. The rotating groove 86 is provided on the core column 87. Figure 5 As shown, the combing seal seat 81, combing channel body 82, combing spring body 83 and combing head body 84 are coaxially arranged, and the combing liquid outlet channel 85 inside the combing head body 84 forms a liquid spray combing structure with the core column 87 and the rotating groove 86. Figure 6 As shown, the combing liquid outlet channel 85 is connected to the rotating groove 86. The combing channel body 82 is arranged in a multi-channel structure. The end of the rotating groove 86 extends to the outside of the combing head body 84, and a variable spray structure 600 is formed between the rotating groove 86 and the inner wall of the outlet end of the head cap 7. The configuration of the variable spray structure 600 can achieve multi-angle and multi-form spraying.

[0084] like Figure 7 As shown, when the head cap 7 is tightened, the variable spray structure 600 changes, the atomization angle is large, and the distance is close. When the head cap 7 is tightened, it is tightly attached to the top of the separating head body 84, and the liquid flows out from the rotating groove 86 of the separating head body, so that the liquid is in a rotating atomizing spray state when it is sprayed out.

[0085] like Figure 8 As shown, when the cap 7 is loosened, the variable spray structure 600 changes, the angle gradually decreases, the distance increases, and eventually becomes a straight spray. When the cap 7 is loosened, a gap appears between the cap 7 and the top of the combing head body. As the gap gradually increases, the rotating groove 86 at the top of the combing head body gradually loses its function, causing the spray angle to gradually decrease, and finally forming a straight spray, a linear spray state. At this time, the distance between the cap and the top of the combing head body can be adjusted as needed to determine the spray state, which can be mist, water mist, line mist, or straight line, etc.

[0086] like Figure 3 、 Figure 9 As shown, a pinball seat socket 106 is provided inside the upper liquid portion 101 of the gun body 1. Several reinforcing plates 107 are provided between the pinball seat socket 106 and the inner wall of the gun body. A gun body air passage 108 is formed between the reinforcing plates 107 and the inner wall of the gun body. A pinball seat 9 is sealed and inserted inside the pinball seat socket. The pinball seat 9 includes an integrally arranged pinball seat upper portion 900, a pinball seat middle portion 901, a pinball seat lower portion 902 and a pinball seat bottom portion 903. The pinball seat upper portion 900 is used to achieve plug-in cooperation with the pinball seat socket 106, thereby forming a valve body-type sealing structure at the top of the pinball seat upper portion 900. The valve body-type sealing structure cooperates with a liquid outlet valve ball 93 to form an upper liquid valve. The valve body-type sealing structure specifically includes an upper liquid valve body structure 92 provided at the top of the pinball seat upper portion and a liquid outlet valve ball 93 movably provided between the upper liquid valve body structure 92 and the top of the pinball seat socket of the gun body. The axial length of the reinforcing plate 107 matches the length of the upper portion of the ball holder. The diameter of the middle portion 901 of the ball holder is larger than that of the upper portion 900. A connecting plane 904 is provided at the junction of the upper portion 900 and the middle portion 901 of the ball holder. The lower end of the reinforcing plate abuts against the connecting plane 904. An air hole 95 is provided axially in the connecting plane. The middle portion 901 of the ball holder is sealed and engaged with the inner wall of the gun body.

[0087] The interior of the ball seat 9 is arranged in a cavity structure, and a seat body channel 91 is arranged inside the upper part 900 of the ball seat. The seat body channel 91 is used to form a liquid channel during the liquid filling process.

[0088] like Figure 2 、 Figure 3 As shown, a connector socket 96 is integrally provided inside the cavity 901 of the middle portion of the ball seat coaxially with the cavity. The inner cavity of the connector socket 96 is communicated with the seat body channel 91. A connector 16 is inserted into the connector socket 96. The upper portion of the connector 16 is sealed and engaged with the inner wall of the connector socket 96. A connector channel 160 is provided inside the connector 16. The connector channel 160 is communicated with the seat body channel 91. A sealing disk 163 is provided below the connector 16. A liquid inlet 161 is provided below the sealing disk 163 along the axis of the connector. An air pipe 162 is provided on the upper surface of the sealing disk 163 parallel to the axis of the connector and facing the lower disk surface of the sealing disk. A full-angle liquid supply valve assembly 17 is connected to the liquid inlet 161. The full-angle liquid supply valve assembly 17 enables the spray gun to rotate 360 ​​degrees in any direction.

[0089] The lower part 902 of the billiard seat is connected to the middle part 901 of the billiard seat in a stepped manner, and the caliber of the lower part of the billiard seat is larger than the caliber of the middle part of the billiard seat. A sealing ring 905 is provided on the inner wall of the connection between the lower part 902 of the billiard seat and the middle part 901 of the billiard seat. The sealing ring 905 is sealed and docked with the upper plate of the sealing disk 163 on the connecting piece. A billiard seat air cavity 97 is formed between the upper plate surface of the sealing disk 163 and the outer wall of the connecting piece and the inner wall of the middle part 901 of the billiard seat. The billiard seat air cavity 97 is communicated with the air pipe 162 and the air hole 95 respectively, and the air hole 95 is communicated with the gun body air channel 108.

[0090] The lower part 902 of the ball seat has a flared structure with the diameter gradually increasing downward. The bottom 903 of the ball seat is integrally extended from the middle part 902 of the ball seat. The bottom 903 of the ball seat is annularly provided with an inner plug structure 94 for forming a sealed plug-type connection with the liquid container. A sealing gasket 10 is provided on the outer wall of the inner plug structure 94. The sealing gasket 10 and the inner plug structure 94 form a double sealing structure to prevent liquid leakage during use and transportation, and at the same time avoid contamination.

[0091] like Figure 10 As shown, the full-angle upper liquid valve assembly 17 is provided with a full-angle upper liquid channel 170 inside, and the full-angle upper liquid valve assembly 17 is provided with a positive spray liquid inlet pipe 171 connected to the full-angle upper liquid channel 170 and a reverse spray valve 172 connected to the full-angle upper liquid channel 170. A liquid inlet suction pipe 18 is plugged into the positive spray liquid inlet pipe 171, and a filter base 19 is connected to the lower end of the liquid inlet suction pipe 18. Figure 11 As shown, the filter base 19 is internally provided with a plurality of filter holes 190. The size of the filter holes 190 can be designed based on the concentration of the liquid and the particle size. The filter base 19 effectively prevents foreign matter from entering the gun body, preventing blockage of the liquid passage during use. The forward-spraying liquid inlet pipe 171 and the full-angle upper liquid passage 170 are connected to form a forward-spraying upper liquid passage 200.

[0092] Specifically, the positive spray upper liquid channel 200 is formed by the positive spray liquid inlet pipe 171, the full-angle upper liquid channel 170, the connecting piece channel 160, and the seat body channel 91.

[0093] The air pipe 162 , the ball seat air cavity 97 , the air hole 95 , the gun body air passage 108 and the air passage 14 are connected to form an air flow passage 300 .

[0094] The reverse spray valve 172 includes a reverse spray valve seat 173 and a reverse spray valve ball 174. The reverse spray valve seat is provided with a liquid inlet groove 176. A reverse spray liquid channel 175 is provided within the reverse spray valve seat 173. The reverse spray liquid channel 175 is opened and closed with the full-angle upper liquid channel 170 via the reverse spray valve ball 174. The reverse spray liquid channel 175 communicates with the full-angle upper liquid channel 170 to form a reverse spray upper liquid channel 400.

[0095] Specifically, the reverse spray liquid supply channel is formed by the reverse spray liquid channel 175, the full-angle liquid supply channel 170, the connector channel 160, and the seat body channel 91 for supplying liquid during reverse spraying.

[0096] The thread ring 3 is screwed to the gun body 1, and a thread ring anti-rotation structure 31 is provided on the inner wall of the lower end of the thread ring 3, which is used to increase the anti-rotation function of the thread ring 3, prevent the container from leaking due to loosening of the thread ring during use and transportation, and avoid contamination.

[0097] A trigger adapter plate 103 is provided on the upper part of the spraying part 102 of the gun body 1, and an adapter hole 104 is provided on the trigger adapter plate 103. A pair of trigger guide guard plates 105 are symmetrically provided on the outer side of the piston assembly cavity 12 for guiding and protecting the trigger.

[0098] The trigger 2 includes a trigger connection portion 20 and a trigger operating portion 22. A rotation axis 23 is integrally provided on the trigger connection portion 20. The trigger between the trigger operating portion 22 and the trigger connection portion 20 is arranged in an arc-shaped structure, and a travel hole 24 is provided in the arc-shaped structure. The piston seat extends through the travel hole 24 and extends outside the trigger. Specifically, the trigger stopper 47 contacts the outer arc surface of the travel hole 24 in the trigger and moves along the outer arc surface of the travel hole 24. The trigger operating portion and the trigger connection portion are arranged in an S-shaped structure as a whole.

[0099] When the full-angle, large-volume spray gun is used, it is connected to the liquid container 500 via the threaded ring 3 . The double sealing structure inside the threaded ring 3 prevents the liquid inside the liquid container 500 from leaking.

[0100] Figures 12 to 15 This is the process of the full-angle, large-volume spray gun being used for normal spraying, when the trigger is pulled for the first time, compressed air, liquid, gas entering the container, and liquid spraying.

[0101] When spraying straight or tilted at any angle, the liquid container 500 and the spray gun are placed in an upright or tilted position, and the head cap 7 is tightened or loosened to select the rotary atomization spray state or the linear spray state.

[0102] like Figure 12As shown, the trigger 2 is pulled to compress the air. The trigger 2 is pulled toward the gun body 1, and the trigger drives the piston seat 4 to move along the piston assembly cavity 12 toward the inside of the piston assembly cavity 12. The piston 5 is driven by the piston seat 4 to move inward along the piston assembly cavity 12. At this time, the all-plastic spring 6 is compressed, the gas inside the piston assembly cavity 12 is compressed, and the pressure inside the piston assembly cavity is reduced. At this time, the combing head 8 is affected by the compressed gas inside the piston assembly cavity 12 and deforms and moves toward the head cap 7. The combing sealing seat 81 is separated from the seal between it and the piston assembly cavity 12, and the liquid spraying channel 100 is released. Since the gas inside the piston assembly cavity 12 is compressed, the compressed gas causes the liquid outlet valve ball 93 to press downward on the upper liquid valve body structure 92 to achieve a seal with the ball seat. The reverse spray valve ball 174 in the full-angle upper liquid valve assembly is forced downward by gravity to seal the reverse spray liquid channel 175, so that the reverse spray liquid channel 175 is closed to the full-angle upper liquid channel 170.

[0103] like Figure 13 As shown, during the liquid filling operation, release the trigger 2. Since the pressure inside the container is greater than the pressure inside the seat channel 91, the liquid outlet valve ball 93 bounces upward, making way for the upper liquid channel 200. The liquid enters the liquid inlet pipette 18 from the filter hole 190 on the filter base 19, enters the upper liquid channel 200 through the liquid inlet pipette 18, enters the liquid spray channel 100 through the channel made way by the liquid outlet valve ball 93, and finally passes through the combing head and the spray hole 71 of the head cap.

[0104] After the liquid is added, the internal pressure of the container decreases. Pull the trigger again and the gas flows as follows: Figure 14 As shown, when the trigger is pulled to compress the all-plastic spring, the air valve 43 on the piston seat 4 moves along the air passage 14 toward the interior of the air passage 14, and the air valve 43 and the sealing seat 15 are released from the sealed state, and the air passage 14 is opened. External air enters the gun body air passage 108 between the ball seat and the gun body through the air passage 14, enters the ball seat air cavity 97 through the air hole 95, and finally enters the container through the air pipe 162. That is, the external air enters the container through the air passage 300, and the pressure inside the container increases, realizing the liquid spraying operation. Figure 15 As shown, the internal pressure of the container is greater than the internal pressure of the spray channel 100, which causes the liquid inside the spray channel to spray outward under the pressure.

[0105] Figures 16 to 19 This is the process of the full-angle, large-volume spray gun entering the container and spraying the liquid when the trigger is pulled for the first time.

[0106] When spraying backward or tilting backward at any angle, the liquid container 500 and the spray gun are placed in an inverted or tilted position, and the head cap 7 is tightened or loosened to select the rotary atomization spray state or the linear spray state.

[0107] like Figure 16 As shown, pull the trigger 2 to compress the air. The trigger 2 is pulled toward the direction of the gun body 1, and the trigger drives the piston seat 4 to move along the piston assembly cavity 12 toward the inside of the piston assembly cavity 12. Driven by the piston seat 4, the piston 5 moves inward along the piston assembly cavity 12. At this time, the all-plastic spring 6 is compressed, and the gas inside the piston assembly cavity 12 is compressed, and the pressure inside the piston assembly cavity is reduced. At this time, the combing head 8 is affected by the compressed gas inside the piston assembly cavity 12, and deforms and moves to the side of the head cap 7, making way for the liquid spray channel 100. Since the gas inside the piston assembly cavity 12 is compressed, the compressed gas causes the liquid outlet valve ball 93 to press upward on the upper liquid valve body structure 92, thereby achieving a seal with the ball seat. Since the spray gun is in an inverted state, the reverse spray valve ball 174 in the full-angle upper liquid valve assembly slides downward to the bottom of the reverse spray liquid channel 175 (the bottom when inverted is the top when upright) under the action of gravity, making way for the reverse spray liquid channel 175, so that the reverse spray liquid channel 175 is connected with the full-angle upper liquid channel 170, and the reverse spray upper liquid channel 400 is opened.

[0108] like Figure 17 As shown, during the liquid filling operation, release the trigger 2. Since the pressure inside the container is greater than the pressure inside the seat channel 91, the liquid outlet valve ball 93 bounces downward, breaking away from the seal between it and the liquid upper valve body structure 92, and letting go of the liquid upper channel 200. The liquid enters the liquid upper channel 200 from the reverse spray liquid channel 400, passes through the channel let by the liquid outlet valve ball 93, and enters the liquid spray channel 100, and finally passes through the spray hole 71 of the head cap of the combing head.

[0109] After the liquid is added, the internal pressure of the container decreases. Pull the trigger again and the gas flows as follows: Figure 18 As shown, when the trigger is pulled to compress the all-plastic spring, the air valve 43 on the piston seat 4 moves along the air passage 14 toward the interior of the air passage 14, and the air valve 43 and the sealing seat 15 are released from the sealed state, and the air passage 14 is opened. External air enters the gun body air passage 108 between the ball seat and the gun body through the air passage 14, enters the ball seat air cavity 97 through the air hole 95, and finally enters the container through the air pipe 162. That is, the external air enters the container through the air passage 300, and the pressure inside the container increases, realizing the liquid spraying operation. Figure 19 As shown, the internal pressure of the container is greater than the internal pressure of the spray channel 100, which causes the liquid inside the spray channel to spray outward under the pressure.

[0110] Example 3:

[0111] exist Figure 20In the embodiment shown, the technical solution in this embodiment is basically the same as that in Example 1, except that: in order to prevent foreign matter inside the liquid from clogging the reverse spray upper liquid channel during the reverse spray process, the liquid inlet groove on the reverse spray valve seat 173 adopts a filter mesh structure.

[0112] This full-angle, large-volume spray gun is equipped with a spring-loaded combing head and an integrated piston seat with an air valve, which realizes the linked setting of liquid application, air intake, and liquid spraying. Since the combing head adopts a spring structure, the combing head can rebound quickly when the trigger is released, and immediately seal to prevent the occurrence of dripping. Therefore, during the liquid application and spraying process, the pressure difference between the inside and outside of the gun body cooperates with the elastic force of the spring structure to achieve rapid sealing between the combing head and the liquid spraying channel, with fast response speed and good sealing performance. No dripping or leakage will occur during the liquid application and spraying process. At the same time, since a variable spraying structure is provided between the combing head and the head cap, the spraying state can be changed by rotating the head cap, and different spraying states such as spray and line spray can be easily selected to meet the spraying needs of different users.

[0113] This full-angle, high-volume spray gun, equipped with a full-angle liquid filling valve assembly, achieves 360-degree spraying capability. Whether spraying upright or tilted during forward spraying, or inverted or tilted during reverse spraying, it can effectively spray without leaking or dripping. The full-angle, three-dimensional rotation and upright / inverted operation without blind spots greatly enhance the product's practicality.

[0114] The full-angle, large-volume spray gun is provided with a double sealing structure on the ball seat, which realizes sealing with the liquid container through the double sealing structure. The liquid container is well isolated from the outside world, and the sealing performance is effectively improved. Whether it is tilted, tilted or inverted, it will not cause sealing failure. At the same time, an anti-rotation structure is provided on the threaded ring, which further limits the rotation stop of the liquid container. The connection reliability and sealing of the gun body and the liquid container are achieved at multiple levels. The liquid is not easy to overflow or flow out, and the overall sealing, rapid flow-off capability and isolation effect are good.

[0115] This full-angle, large-volume spray gun has a reverse spray valve seat that adopts a filter mesh structure and a filter base with filter holes when spraying forward, which effectively avoids the occurrence of foreign matter blockage during spraying. At the same time, it can more effectively achieve different spraying effects without affecting the spraying effect due to foreign matter.

[0116] The above embodiment is only a partial embodiment of the present invention, not all embodiments. At the same time, based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field based on the technical solution of this application without making any creative work should fall within the scope of protection of the present invention.

Claims

1. A full-angle, large-volume spray gun, characterized in that include: The gun body (1) comprises an upper liquid portion (101) and a spray portion (102); A piston assembly is movably sealed and connected to the injection portion (102); a piston seat nozzle (45) is provided on the piston assembly, an elastic opening and closing telescopic member is movably provided inside the piston seat nozzle (45), the elastic opening and closing telescopic member extends to the outside of the piston seat nozzle to form an extension end, and the extension end is provided with a rotation groove (86); The head cap (7) is movably connected to the piston seat nozzle (45); the head cap (7) is provided with a spray hole (71), and an adjustable variable spray structure is formed between the head cap (7) and the rotating groove (86); The elastic opening and closing telescopic member is a combing head with an all-plastic spring structure, comprising a combing sealing seat body for realizing opening and closing of the injection channel, a combing channel body for forming multiple channels connected to the combing sealing seat body, a combing spring body connected to the combing channel body, a combing head body connected to the combing spring body, a combing liquid outlet channel provided inside the combing head body, a core column provided inside the combing liquid outlet channel, and a rotating groove provided on the core column; A piston assembly cavity is provided inside the injection part. The piston assembly includes a piston seat, a piston and a fully plastic spring. The piston is connected to the piston seat and is driven by the piston seat to slide sealedly inside the piston assembly cavity. A piston cavity is provided inside the piston; an elastic variable diameter spray channel is formed inside the fully plastic spring.

2. The full-angle, high-volume spray gun according to claim 1, characterized in that: The combing sealing seat body (81), the combing channel body (82), the combing spring body (83) and the combing head body (84) are coaxially arranged, and a liquid spraying combing structure is formed between the combing liquid outlet channel (85) inside the combing head body (84), the core column (87) and the rotating groove (86).

3. The full-angle, high-volume spray gun according to claim 1, characterized in that: A spring cavity (61) is provided inside the all-plastic spring (6), and the all-plastic spring (6) is sealed and pressed between the piston cavity (53) and the piston assembly cavity (12).

4. The full-angle, high-volume spray gun according to claim 3, characterized in that: A gas passage (14) is provided on the injection portion (102) in a direction parallel to the piston assembly cavity (12), and a corresponding gas valve (43) is integrally provided on the piston seat (4). The gas valve (43) is arranged inside the gas passage (14) in a sealed opening and closing manner driven by the piston seat.

5. The full-angle, high-volume spray gun according to claim 3, characterized in that: The piston seat spray head (45) is integrally arranged on the piston seat (4); a spray chamber (46) communicating with the piston chamber (53) is arranged inside the piston seat spray head (45); the elastic opening and closing telescopic member is arranged inside the spray chamber (46) and forms an opening and closing spray structure with the piston chamber (53).

6. The full-angle, high-volume spray gun according to any one of claims 1 to 5, characterized in that: The adjustable variable injection structure achieves a change in the liquid injection state by rotating the head cap (7) in and out to change the distance between the head cap (7) and the rotating groove (86).

7. The full-angle, high-volume spray gun according to any one of claims 1 to 5, characterized in that: The upper liquid portion (101) is provided with a ball seat (9) inside, a seat body channel (91) inside the ball seat (9), a connecting piece (16) inside the ball seat (9), a connecting piece channel (160) inside the connecting piece (16), and the connecting piece channel (160) is connected with the seat body channel (91) to form an upper liquid channel (200).

8. The full-angle, high-volume spray gun according to claim 7, characterized in that: A gun body air passage (108) is provided inside the upper end of the upper liquid portion (101), a ball seat air cavity (97) is formed between the connecting piece (16) and the inner wall of the ball seat (9), and an air hole (95) is provided on the upper part of the ball seat (9) for connecting the ball seat air cavity (97) and the gun body air passage (108).

9. The full-angle, high-volume spray gun according to claim 7, characterized in that: A valve body type sealing structure is formed between the top of the ball seat (9) and the upper liquid portion (101), and the valve body type sealing structure cooperates with a liquid outlet valve ball (93) to form an upper liquid valve.

10. The full-angle, large-volume spray gun according to claim 7, characterized in that: The connecting piece (16) is provided with a liquid inlet (161) for supplying liquid and an air pipe (162) for air intake.

11. The full-angle, high-volume spray gun according to any one of claims 1 to 5, characterized in that: The bottom of the upper liquid portion (101) is provided with an inner plug structure (94) in an annular shape for forming a sealed plug connection with the liquid container, and a sealing gasket (10) is provided on the outer wall of the inner plug structure (94). The sealing gasket (10) and the inner plug structure (94) form a double sealing structure.

12. The full-angle, high-volume spray gun according to any one of claims 1 to 5, characterized in that: The lower end of the upper liquid portion (101) is provided with a full-angle upper liquid valve assembly (17) for achieving full-angle spraying of the forward spray and the reverse spray; the full-angle upper liquid valve assembly (17) is provided with a full-angle upper liquid channel (170), a forward spray liquid inlet pipe (171) and a reverse spray valve (172) connected to the full-angle upper liquid channel (170).

13. The full-angle, large-volume spray gun according to claim 12, characterized in that: The reverse spray valve (172) includes a reverse spray valve seat (173) and a reverse spray valve ball (174). A reverse spray liquid channel (175) is provided inside the reverse spray valve seat (173). The reverse spray liquid channel (175) is opened and closed with the full-angle upper liquid channel (170) through the reverse spray valve ball (174). A liquid inlet groove (176) is provided on the reverse spray valve seat.

14. The full-angle, high-volume spray gun according to claim 12, characterized in that: The forward spray liquid inlet pipe (171) and the full-angle upper liquid channel (170) are connected to form a forward spray upper liquid channel, and the reverse spray liquid channel (175) is connected to the full-angle upper liquid channel (170) to form a reverse spray upper liquid channel (400).

15. The full-angle, high-volume spray gun according to any one of claims 1 to 5, characterized in that: It also includes a filter base (19), wherein a plurality of filter holes (190) are provided inside the filter base (19).

16. The full-angle, high-volume spray gun according to any one of claims 1 to 5, characterized in that: It also includes a trigger (2) and a threaded ring (3), wherein the trigger (2) is provided with a travel movable hole (24), and the piston assembly passes through the travel movable hole (24) and is driven by the trigger (2) to perform liquid spraying movement; the threaded ring (3) is screwed to the gun body (1), and a threaded ring rotation-stopping structure (31) is provided on the inner wall of the lower end of the threaded ring (3).

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