CN217910971U

CN217910971U - Spray gun

Info

Publication number: CN217910971U
Application number: CN202221763385.3U
Authority: CN
Inventors: 徐军; 王大会; 唐雷
Original assignee: Fujian Hansu Sanitary Technology Co ltd
Current assignee: Fujian Hansu Sanitary Technology Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-29
Anticipated expiration: 2032-07-08

Abstract

The utility model provides a spray gun, including the rifle body, rifle body front end has central delivery port and outer lane delivery port, still including setting up first passageway, second passageway, first control mechanism and the second control mechanism on the rifle body, first passageway and second passageway communicate with central delivery port and outer lane delivery port respectively, and first control mechanism is used for making first passageway jam or unblocked, and second control mechanism is used for making the second passageway jam or unblocked. The user can select the water outlet form that the first channel is discharged, the second channel is discharged or the first channel and the second channel are discharged simultaneously according to actual needs, so that the use requirements of the user are met.

Description

Spray gun

Technical Field

The utility model relates to a spray gun.

Background

After the kitchen and toilet appliances and facilities (such as kitchen and toilet appliances, cooking benches, tableware, sinks, toilets and the like) are used, pollutants are left on the surfaces of the kitchen and toilet appliances and facilities, and the kitchen and facilities need to be cleaned regularly in order to ensure normal use and sanitation of the kitchen and facilities, but the kitchen and facilities are cleaned by using a cleaning agent, so that the operation is complicated, and the cleaning agent is easy to remain on the surfaces of the kitchen and facilities and is not beneficial to human health. Cleaning with a cleaning device having a spray gun does not present this problem. However, in the prior art, the spray gun generally has only one water spraying channel, that is, only one water outlet form, which limits the use scenario of the spray gun and cannot meet the use requirements of users.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a spray gun can select suitable play water form according to actual need, satisfies user's user demand.

The utility model discloses a following technical scheme realizes:

a spray gun comprises a gun body, a first channel, a second channel, a first control mechanism and a second control mechanism, wherein the front end of the gun body is provided with a central water outlet and an outer ring water outlet, the first channel, the second channel, the first control mechanism and the second control mechanism are arranged on the gun body, the first channel and the second channel are respectively communicated with the central water outlet and the outer ring water outlet, the first control mechanism is used for enabling the first channel to be blocked or unblocked, and the second control mechanism is used for enabling the second channel to be blocked or unblocked. The user can select the water outlet form that the first channel is discharged, the second channel is discharged or the first channel and the second channel are discharged simultaneously according to actual needs, so that the use requirements of the user are met.

Furthermore, the gun body is divided into two detachable sections, the first control mechanism and the second control mechanism are respectively arranged on the two sections, the two sections are detachably connected through the connecting mechanism, and the two sections of structures can be more beneficial to manufacturing the gun body, so that the production efficiency is improved.

Further, coupling mechanism is including setting up the first buckle board on one of them section, setting up first buckle on another section, setting up extension section and the sealing washer on one of them section, is provided with the first buckle hole that matches with first buckle on the first buckle board, and the extension section inserts in another section, and the sealing washer setting is between extension section and this another section inner wall, and two sections connections are simple and convenient, do benefit to the assembly of rifle body, and the sealing washer is then avoided the junction to leak.

Furthermore, the first channel comprises a water inlet section, a first middle section and a first water outlet section, the second channel comprises a water inlet section, a second middle section and a second water outlet section, the first water outlet section and the second water outlet section are respectively communicated with the central water outlet and the outer ring water outlet, the first control mechanism comprises a first water passing part and a first blocking part, the second control mechanism comprises a second water passing part and a second blocking part, the first water passing part is provided with a first water passing cavity respectively communicated with the water inlet cavity, the first middle section and the second middle section, the second water passing part is provided with a second water passing cavity respectively communicated with the first middle section and the first water outlet section, the first blocking part is movably arranged in the first water passing cavity so that a communication port of the first water passing cavity and the second middle section is blocked or unblocked, the second blocking part is movably arranged in the second water passing cavity so that a communication port of the second water passing cavity and the first water outlet section is blocked or unblocked, and control of different channels is realized by a simple structure.

Furthermore, the joint of the two sections is positioned at the first middle section and the second middle section, so that the production of the gun body is facilitated.

Furthermore, the first water passing cavity comprises a first lower section and a first upper section, the communicating ports of the first water passing cavity, the first middle section and the second middle section are respectively arranged on the first lower section and the first upper section, the diameter of the first lower section is larger than that of the first upper section, the first blocking piece comprises a first valve rod, a first water sealing ring arranged at the lower end of the first valve rod, and a first spring arranged between the lower end of the first valve rod and the lower end of the first water passing piece, the first water sealing ring is positioned at the connecting position of the first lower section and the first upper section so as to block the communicating port of the first water passing cavity and the second middle section, the first water sealing ring moves downwards by pressing down the first valve rod, the communicating port of the first water passing cavity and the second middle section is unblocked, and the position of the communicating port is ingeniously arranged, so that the first water sealing ring can block or unblock the communicating port by simply moving upwards and downwards.

Furthermore, the second water passing cavity comprises a second lower section and a second upper section, a communication port between the second water passing cavity and the first water outlet section is arranged at the second upper section, the diameter of the second lower section is larger than that of the second upper section, the second blocking piece comprises a second valve rod, a second water sealing ring arranged at the lower end of the second valve rod, and a second spring arranged at the lower end of the second valve rod and the lower end of the second water passing piece, the second water sealing ring is positioned at the joint of the second lower section and the second upper section to block the communication port between the second water passing cavity and the first water outlet section, and the second blocking piece is pressed to move the second water sealing ring downwards so that the communication port between the second water passing cavity and the first water outlet section is unblocked.

Furthermore, first water spare, second are crossed water spare upper end and all are provided with the button, are provided with the connecting tube on the button, stress plate and the first backup pad of interval arrangement about all having on first valve rod and the second valve rod, the connecting tube of two buttons inserts first water spare and the second respectively crosses water spare, and the upper end of first valve rod and second valve rod inserts respectively in the connecting tube that corresponds, and makes the stress plate support the connecting tube lower extreme, is provided with the third water trap that seals first water spare or the second of crossing water spare in the ring channel that stress plate and first backup pad formed. The button is arranged, so that the operation of a user is more convenient.

Furthermore, the lower ends of the first water passing piece and the second water passing piece are respectively provided with a bottom cover in a fastening mode, the bottom covers comprise bottom plates, second connecting pipes and spring columns, the second connecting pipes are arranged on the bottom plates, a circular ring plate is arranged at the lower end of each second connecting pipe, the second connecting pipes of the two bottom covers respectively extend into the first water passing piece and the second water passing piece, a fourth water sealing ring is arranged on the circular ring plate, the outer side of the fourth water sealing ring abuts against the inner wall of the first water passing piece or the inner wall of the second water passing piece, the first spring and the second spring are respectively arranged on the corresponding spring columns, and the lower ends of the first spring and the second spring are arranged on the corresponding bottom plates.

Furthermore, a second supporting plate and a third supporting plate are arranged at intervals on the lower sections of the first valve rod and the second valve rod, annular grooves are formed between the second supporting plate and the third supporting plate, and the first water sealing ring and the second water sealing ring are respectively arranged in the corresponding annular grooves.

Furthermore, the water spraying device also comprises a water spraying piece buckled at the front end of the gun body, and the water spraying piece is provided with a central spray hole communicated with the central water outlet and an outer ring spray hole communicated with the outer ring water outlet.

Furthermore, the gun further comprises a shell sleeved on the gun body, and two yielding holes for the two buttons to penetrate out are formed in the shell.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the utility model after the casing is removed.

Fig. 4 is the schematic cross-sectional structure diagram of the present invention after removing the outer shell.

Fig. 5 is the exploded schematic view of the utility model with the outer shell removed.

Fig. 6 is a schematic sectional view of the first plug according to the present invention.

Fig. 7 is a schematic sectional view of the second plug according to the present invention.

Fig. 8 is a schematic sectional view of the first water passing cavity of the present invention.

Fig. 9 is a schematic sectional view of the second water passing cavity of the present invention.

Fig. 10 is a schematic structural view of the first valve rod of the present invention.

Wherein, 1, a shell; 2. a gun body; 21. a central water outlet; 22. a water outlet of the outer ring; 23. a water inlet section; 24. a first middle section; 241. a first stage; 242. a second stage; 25. a first water outlet section; 26. a second middle section; 27. a second water outlet section; 3. a first control mechanism; 31. a first water passing member; 311. a first water passing cavity; 313-314 and a communication port; 32. a first obstruction; 321. a first valve stem; 322. a first water sealing ring; 323. a first spring; 324. a stress plate; 325. a first support plate; 326. a third water sealing ring; 327. a second buckle; 328. a second support plate; 329. a third support plate; 33. a button; 331. connecting pipes; 34. a bottom cover; 341. a base plate; 342. a second connecting pipe; 343. a spring post; 344. a circular ring plate; 345. a second snap-in plate; 346. a second snap-fit hole; 347. a fourth water sealing ring; 4. a second control mechanism; 41. a second water passing member; 411. a second water passing cavity; 413. a communication port; 42. a second blocking member; 421. a second valve stem; 422. a second water sealing ring; 423. a second spring; 424. a stress plate; 425. a first support plate; 426. a third water sealing ring; 427. a second buckle; 428. a second support plate; 429. a third support plate; 43. a button; 431. connecting pipes; 44. a bottom cover; 441. a base plate; 442. a second connecting pipe; 443. a spring post; 444. a circular ring plate; 445. a second buckle plate; 446. a second fastening hole; 447. a fourth water sealing ring; 51. a first buckle plate; 52. a first buckle; 53. a first snap-fit hole; 54. an extension section; 55. a seal ring; 6. a water spraying member; 61. spraying a central hole; 62. spraying holes on the outer ring; 63. a third buckle plate; 64. a third buckle; 7. a positioning and fixing mechanism; 71. positioning a plate; 72. a limiting plate; 73. an inclined plate; 74. and a positioning strip.

Detailed Description

As shown in fig. 1 to 10, the spray gun includes a housing 1, a gun body 2 disposed in the housing 1, a first channel, a second channel, a first control mechanism 3, a second control mechanism 4 disposed on the gun body 2, and a water spraying member 6 fastened to the front end of the gun body 2. A positioning and fixing mechanism 7 is arranged between the shell 1 and the gun body 2. The front end of the gun body 2 is provided with a central water outlet 21 and an outer ring water outlet 22, and the water spraying piece 6 is provided with a central spray hole 61 communicated with the central water outlet 21 and an outer ring spray hole 62 communicated with the outer ring water outlet 22. The first channel and the second channel are respectively communicated with the central water outlet 21 and the outer ring water outlet 22, the first control mechanism 3 is used for enabling the first channel to be blocked or unblocked, and the second control mechanism 4 is used for enabling the second channel to be blocked or unblocked.

The first channel comprises a water inlet section 23, a first middle section 24 and a first water outlet section 25, the second channel comprises a water inlet section 23, a second middle section 26 and a second water outlet section 27, namely the first channel and the second channel have a common water inlet section 23, the first water outlet section 25 and the second water outlet section 27 are respectively communicated with the central water outlet 21 and the outer ring water outlet, the first control mechanism 3 comprises a first water passing piece 31, a first blocking piece 32, a button 33 arranged at the upper end of the first water passing piece 31 and a bottom cover 34 arranged at the lower end of the first water passing piece 31, the second control mechanism 4 comprises a second water passing piece 41, a second blocking piece 42, a button 43 arranged at the upper end of the second water passing piece 41 and a bottom cover 44 arranged at the lower end of the second water passing piece 41, the first water passing piece 31 is provided with a first water passing cavity 311 respectively communicated with the water inlet section 23, the first middle section 24 and the second middle section 26, the second water passing piece 41 is provided with a second water passing cavity 411 which is respectively communicated with the first water outlet section 24 and the first water outlet section 25, the second water passing piece 411 is provided with the second water passing piece 411 or the second water passing cavity 413, and the first water passing piece is provided with the second water passing cavity 411 or the second water passing piece 411, so that the second water passing piece is communicated with the second water passing piece 411, and the second water passing piece 23 or the second water passing piece 25.

The gun body 2 is divided into two detachable sections, the first control mechanism 3 and the second control mechanism 4 are respectively arranged on the two sections, the two sections are detachably connected through a connecting mechanism, specifically, the connecting position of the two sections is located on the first middle section 24 and the second middle section 26, namely, the first middle section 24 and the second middle section 26 both comprise a first section 241 and a second section 242, the inner diameter of the first section 241 is basically the same as the outer diameter of the other section, the connecting mechanism comprises a first buckling plate 51 arranged on the first section 241 of the first middle section 24 and the second middle section 26, a first buckle 52 arranged on the second section 242 of the first middle section 24 and the second middle section 26, an extending section 54 and two sealing rings 55 arranged at the end parts of the second section 242 of the second middle section 26 and the second middle section 26, a first buckling hole 53 matched with the first buckle 52 is arranged on the first buckling plate 51, after the extending section 54 is inserted into the corresponding first section 241, the first buckle 52 is clamped in the first buckling hole 53, and a sealing ring 55 is arranged between the extending section 54 and the inner wall of the first section 241.

The first water passing cavity 311 comprises a first lower section and a first upper section which are communicated with each other, the diameter of the first lower section is larger than that of the first upper section, the communication port of the first water passing cavity 311 and the water inlet section 23 is arranged on the left side of the first lower section, the communication port 313 of the first water passing cavity 311 and the first middle section 24 is arranged on the right side of the first lower section, and the communication port 314 of the first water passing cavity 311 and the second middle section 26 is arranged on the right side of the first upper section.

The first blocking member 32 comprises a first valve rod 321, a second supporting plate 328 and a third supporting plate 329 which are sleeved on the lower section of the first valve rod 321 in an up-and-down manner, a stress plate 324 and a first supporting plate 325 which are sleeved on the upper section of the first valve rod 321 in an up-and-down manner, a first water sealing ring 322, a first spring 323 arranged between the lower end of the first valve rod 321 and the lower end of the first water passing member 31, wherein annular grooves are formed by the second supporting plate 328 and the third supporting plate 329, the first water sealing ring 322 is arranged in the annular grooves, and the outer side of the first water sealing ring 322 abuts against the inner wall of the first lower section. The upper end of the first valve rod 321 is provided with a button 33, the button 33 is provided with a connecting pipe 331, the connecting pipe 331 is inserted into the first water passing part 31 downwards, the upper end of the first valve rod 321 is inserted into the connecting pipe 331 upwards, the lower end of the connecting pipe 331 is propped against the stress plate 324, the stress plate 324 and the first support plate 325 form an annular groove, a third water sealing ring 326 is arranged in the annular groove, and the outer side of the third water sealing ring 326 is propped against the inner wall of the first water passing part 31, so that the first water passing part 31 is sealed, and liquid is prevented from flowing out from the upper end of the first water passing part 31. The lower end of the first valve rod 321 is provided with a bottom cover 34, the bottom cover 34 includes a circular bottom plate 341, a second connecting pipe 342 and a spring column 343 which are arranged on the bottom plate 341, a circular ring plate 344 which is arranged at the lower end of the second connecting pipe 342, two second fastening plates 345 which are oppositely arranged on the bottom plate 341 and a second fastening hole 346 which is arranged on the second fastening plate 345, the lower end of the first water passing member 31 is provided with a second fastening 327 which is matched with the second fastening hole 346, the spring column 343 is located at the center of the bottom plate 341, the lower section of the first spring 323 is arranged on the spring column 343, the lower end of the first spring is arranged on the bottom plate 341, the second connecting pipe 342 extends into the first water passing member 31, and the circular ring plate 344 is provided with a fourth water sealing ring 347 which is abutted against the inner wall of the first water passing member 31 at the outer side so as to prevent the liquid from flowing out from the lower end of the first water passing member 31. When the first spring 323 is in a normal state, the first water seal ring 322 is positioned at the top of the first lower section to separate the first lower section from the first upper section, so that the communication port 314 on the right side of the first upper section is blocked, and the first water seal ring 322 is moved downward by pressing the first valve rod 321 downward, so that the communication port 314 is opened.

The second water passing cavity 411 comprises a second lower section and a second upper section which are communicated, the diameter of the second lower section is larger than that of the second upper section, the communication port between the second water passing cavity 411 and the first middle section 24 is arranged on the left side of the second lower section, the communication port 413 between the second water passing cavity 411 and the first water outlet section 25 is arranged on the right side of the second upper section, and the second water outlet section 27 is communicated with the second middle section 26.

The second blocking member 42 comprises a second valve rod 421, a second supporting plate 428 and a third supporting plate 429 which are sleeved on the lower section of the second valve rod 421 at upper and lower intervals, a stress plate 424 and a first supporting plate 425 which are sleeved on the upper section of the second valve rod 421 at upper and lower intervals, a second water sealing ring 422 and a second spring 423 which is arranged between the lower end of the second valve rod 421 and the lower end of the second water passing member 41, wherein the second supporting plate 428 and the third supporting plate 429 form an annular groove, the second water sealing ring 422 is arranged in the annular groove, and the outer side of the second water sealing ring 422 abuts against the inner wall of the second lower section. The upper end of the second valve stem 421 is provided with a button 43, the button 43 is provided with a connecting pipe 431, the connecting pipe 431 is inserted into the second water passing member 41 downwards, the upper end of the second valve stem 421 is inserted into the connecting pipe 431 upwards, the lower end of the connecting pipe 431 is abutted against the stress plate 424, the stress plate 424 and the first supporting plate 425 form an annular groove, a third water sealing ring 426 is arranged in the annular groove, the outer side of the third water sealing ring 426 is abutted against the inner wall of the second water passing member 41, so that the second water passing member 41 is sealed, and liquid is prevented from flowing out from the upper end of the second water passing member 41. The lower end of the second valve rod 421 is provided with a bottom cover 44, the bottom cover 44 includes a circular bottom plate 441, a second connecting pipe 442 and a spring column 443 arranged on the bottom plate 441, a circular ring plate 444 arranged at the lower end of the second connecting pipe 442, two second buckling plates 445 arranged on the bottom plate 441 oppositely, and a second buckling hole 446 arranged on the second buckling plate 445, the lower end of the first water passing element 31 is provided with a second buckle 427 matched with the second buckling hole 446, the spring column 443 is located at the center of the bottom plate 441, the lower section of the first spring 323 is arranged on the spring column 443, the lower end of the first spring is arranged on the bottom plate 441, the second connecting pipe 442 extends into the second water passing element 41, and the circular ring plate 444 is provided with a fourth water sealing ring 447 which abuts against the inner wall of the second water passing element 41 at the outer side so as to prevent the liquid from flowing out from the lower end of the second water passing element 41. When the second spring 423 is in a normal state, the second water sealing ring 422 is located at the top of the second lower section to separate the second lower section from the second upper section, so that the communication port 413 located on the right side of the second upper section is blocked, and the second valve rod 421 is pressed downwards to move the second water sealing ring 422 downwards, so that the communication port 413 is unblocked.

The water spraying piece 6 arranged at the front end of the gun body 2 is provided with a third buckle plate 63, the third buckle plate 63 is provided with a third buckle hole, the gun body 2 is provided with a third buckle 64 matched with the third buckle hole, and the water spraying piece 6 is detachably arranged on the gun body 2 through the matching of the third buckle plate 63 and the third buckle 64.

The shell 1 is provided with two abdicating holes for the two buttons to penetrate out. Two positioning and fixing mechanisms 7 are oppositely arranged between the shell 1 and the gun body 2. The positioning and fixing mechanism 7 comprises two positioning plates 71 arranged on the gun body 2, a limiting plate 72 arranged on the right side of the two positioning plates 71, a tilting plate 73 arranged at the left ends of the two positioning plates 71 and a positioning strip 74 arranged on the inner side of the shell 1, wherein the tilting plate 73 tilts upwards, the positioning strip 74 is positioned between the two positioning plates 71, the left end of the positioning strip 74 is abutted against the end part of the tilting plate 73, and the right end of the positioning strip is abutted against the limiting plate 72, so that the installation of the shell 1 and the gun body 2 is more convenient.

When the first valve rod 321 and the second valve rod 421 are not pressed, the communication port 314 between the first water passing member 31 and the second middle section 26 is blocked, the communication port 413 between the second water passing member 41 and the first water outlet section 25 is blocked, that is, the first channel and the second channel are blocked, when only the first valve rod 321 is pressed, the communication port 314 between the first water passing member 31 and the second middle section 26 is unblocked, the water inlet section 23 and the second middle section 26 are communicated with the second water outlet section 27, that is, the second channel is unblocked, the outer ring spray hole 62 can spray water, when only the second valve rod 421 is pressed, the second water passing member 41 is communicated with the communication port 413 of the first water outlet section 25, the water inlet section 23 and the first middle section 24 are communicated with the first water outlet section 25, that is the first channel is unblocked, and when the first valve rod 321 and the second valve rod 421 are pressed, the first channel and the second channel are unblocked.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims

1. The utility model provides a spray gun, includes the rifle body (2), and rifle body (2) front end has central delivery port (21) and outer lane delivery port (22), its characterized in that: the water spray gun further comprises a first channel, a second channel, a first control mechanism (3) and a second control mechanism (4) which are arranged on the gun body (2), wherein the first channel and the second channel are respectively communicated with the central water outlet (21) and the outer ring water outlet (22), the first control mechanism (3) is used for enabling the first channel to be blocked or unblocked, and the second control mechanism (4) is used for enabling the second channel to be blocked or unblocked.

2. A spray gun as claimed in claim 1, in which: the gun body (2) is divided into two detachable sections, the first control mechanism (3) and the second control mechanism (4) are respectively arranged on the two sections, and the two sections are detachably connected through a connecting mechanism.

3. A spray gun as claimed in claim 2, in which: the connecting mechanism comprises a first buckling plate (51) arranged on one section, a first buckle (52) arranged on the other section, an extending section (54) arranged on one section and a sealing ring (55), wherein a first buckling hole (53) matched with the first buckle (52) is formed in the first buckling plate (51), the extending section (54) is inserted into the other section, and the sealing ring (55) is arranged between the extending section (54) and the inner wall of the other section.

4. A spray gun as claimed in claim 2 or 3, in which: the first channel comprises a water inlet section (23), a first middle section (24) and a first water outlet section (25), the second channel comprises a water inlet section (23), a second middle section (26) and a second water outlet section (27), the first water outlet section (25) and the second water outlet section (27) are respectively communicated with the central water outlet (21) and the outer ring water outlet (22), the first control mechanism (3) comprises a first water passing part (31) and a first blocking part (32), the second control mechanism (4) comprises a second water passing part (41) and a second blocking part (42), the first water passing part (31) is provided with a first water passing cavity (311) which is respectively communicated with the water inlet cavity, the first middle section (24) and the second middle section (26), the second water passing part (41) is provided with a second water passing cavity (411) which is respectively communicated with the first middle section (24) and the first water outlet section (25), and the first water passing cavity (32) is movably arranged in the first water passing cavity (24) so that the second water passing cavity (411) is communicated with the second water outlet cavity (42) or the second water passing cavity (411) is communicated with the second water passing part (42) so that the first water passing part (311) is unblocked or the second water passing part (32).

5. A spray gun according to claim 4, wherein: the junction of the two sections is located in a first (24) and second (26) intermediate section.

6. A spray gun according to claim 4, characterized in that: the first water passing cavity (311) comprises a first lower section and a first upper section, communication ports of the first water passing cavity (311), the first middle section (24) and the second middle section (26) are respectively arranged on the first lower section and the first upper section, the diameter of the first lower section is larger than that of the first upper section, the first blocking piece (32) comprises a first valve rod (321), a first water sealing ring (322) arranged at the lower end of the first valve rod (321), and a first spring (323) arranged between the lower end of the first valve rod (321) and the lower end of the first water passing piece (31), the first water sealing ring (322) is located at the joint of the first lower section and the first upper section so as to block the communication ports of the first water passing cavity (311) and the second middle section (26), the first water sealing ring (322) moves downwards by pressing down the first valve rod (321), and the communication ports of the first water passing cavity (311) and the second middle section (26) are unblocked.

7. A spray gun according to claim 5, characterized in that: the second water passing cavity (411) comprises a second lower section and a second upper section, a communication port of the second water passing cavity (411) and the first water outlet section (25) is arranged at the second upper section, the diameter of the second lower section is larger than that of the second upper section, the second blocking piece (42) comprises a second valve rod (421), a second water sealing ring (422) arranged at the lower end of the second valve rod (421), and a second spring (423) arranged at the lower end of the second valve rod (421) and the lower end of the second water passing piece (41), the second water sealing ring (422) is arranged at the joint of the second lower section and the second upper section to block the communication port of the second water passing cavity (411) and the first water outlet section (25), and the second water sealing ring (422) moves downwards by pressing down the second blocking piece (42) to enable the communication port of the second water passing cavity (411) and the first water outlet section (25) to be unblocked.

8. A spray gun according to claim 6, wherein: first water spare (31), second are crossed and are all provided with the button on water spare (41), are provided with the connecting pipe on the button, stress plate (324) and first backup pad of interval arrangement about all having on first valve stem (321) and second valve stem (421), the connecting pipe of two buttons inserts first water spare (31) and second respectively and crosses water spare (41), insert respectively the connecting pipe that corresponds in the upper end of first valve stem (321) and second valve stem (421), and make stress plate (324) support the connecting pipe lower extreme, be provided with the third water sealing circle that seals first water spare (31) or second and cross water spare (41) in the annular groove that stress plate (324) and first backup pad formed.

9. A spray gun according to claim 6, characterized in that: the lower ends of the first water passing piece (31) and the second water passing piece (41) are buckled and connected with a bottom cover, the bottom cover comprises a bottom plate, a second connecting pipe and a spring column, the second connecting pipe and the spring column are arranged on the bottom plate, the lower end of the second connecting pipe is provided with a circular plate, the second connecting pipes of the two bottom covers extend into the first water passing piece (31) and the second water passing piece (41) respectively, the circular plate is provided with a fourth water sealing ring, the outer side of the fourth water sealing ring abuts against the inner wall of the first water passing piece (31) or the second water passing piece (41), the first spring (323) and the second spring (423) are arranged on the corresponding spring column respectively, and the lower ends of the first spring and the second spring are arranged on the corresponding bottom plate.

10. A spray gun according to claim 6, characterized in that: the lower sections of the first valve rod (321) and the second valve rod (421) are respectively provided with a second supporting plate and a third supporting plate at intervals, an annular groove is formed between the second supporting plate and the third supporting plate, and the first water sealing ring (322) and the second water sealing ring (422) are respectively arranged in the corresponding annular grooves.

11. A spray gun according to claim 1, 2 or 3, wherein: the water spray gun further comprises a water spray piece (6) buckled and arranged at the front end of the gun body (2), and the water spray piece (6) is provided with a central spray hole (61) communicated with the central water outlet (21) and an outer ring spray hole (62) communicated with the outer ring water outlet (22).

12. A spray gun according to claim 6, characterized in that: the gun further comprises a shell (1) sleeved on the gun body (2), and two yielding holes for the two buttons to penetrate through are formed in the shell (1).