Bidirectional hand buckle type spray gun capable of inversely spraying liquid on product

Abstract

The invention discloses a bidirectional hand-buckled spray gun capable of inversely spraying liquid on a product, which relates to the technical field of liquid spraying pumps and comprises a gun body assembly, and a shell is connected to one side of the top end of the gun body assembly in a buckled manner. During inversion, the second ball valve slides to the end, away from the horizontal pipe, of the second liquid inlet pipe due to gravity so as to open the seal, meanwhile, the third ball valve opens the seal due to gravity, liquid flows into the straight barrel from the liquid inlet channel, and when the wrench assembly is extruded, a pressure difference is formed; liquid is sucked into the piston cavity from the first liquid inlet pipe and the second liquid inlet pipe, when the wrench assembly is extruded again, the third ball valve is pressed to the sealing face to seal the first liquid inlet pipe due to water pressure, the first ball valve is pushed away by the water pressure, and the liquid enters the extension cylinder through the water outlet hole and is finally sprayed out along the first water outlet hole and the water outlet channel; therefore, inverted liquid spraying can be achieved, all liquid in the bottle can be sprayed completely, sanitation dead corners can be cleaned conveniently, and practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of liquid spray pumps, and in particular to a two-way hand-trigger spray gun capable of spraying liquid by inverting a product. Background Art

[0002] At present, pump nozzles are widely used in various fields of life, such as watering cans and oil sprayers in the kitchen. Usually, pump nozzles can be detachably installed on bottles, cans or pots. The basic principle of pump nozzles on the market is to use the piston to move in the pump body, so that the gas in the pump body flows, the pressure decreases, and the pressure outside the pump body remains unchanged, so that a pressure difference is generated between the pump body and the outside, and the liquid is guided out of the pump body through the pressure difference.

[0003] However, when the existing spray pump is used with a spray gun for cleaning, there are some places (such as the groove under the laundry countertop and the toilet groove, which are dead corners, where the product needs to be turned upside down to spray). Due to the problem of the position of the liquid inlet of the reverse spray on the market, there is still a lot of liquid when it is turned upside down, but it cannot be sucked out. It needs to be turned right side up to spray all, and it cannot be inverted for cleaning, which is of poor practicality.

[0004] Therefore, it is necessary to invent a two-way hand trigger spray gun that can spray liquid upside down to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a two-way hand trigger spray gun which can spray liquid by inverting the product, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a two-way hand trigger spray gun capable of spraying liquid by inverting a product, comprising a gun body assembly, wherein a shell is provided at one side of the top end of the gun body assembly in a snap-fit ​​connection;

[0007] The gun body assembly includes a fixing frame, a piston cavity is integrally formed at the bottom end of one side of the fixing frame close to the shell, a water outlet channel is integrally formed at the other side of the fixing frame, a water inlet channel is integrally formed at the bottom end of the fixing frame, and the water inlet channel has only a bottom opening, an inclined extension frame is integrally formed at the side of the piston cavity away from the fixing frame, a limit plate is integrally formed at the side of the water inlet channel close to the extension frame, and the top of the limit plate is inclined, an extension cylinder is integrally formed at the top inner wall of the water inlet channel close to the fixing frame, a first water outlet hole and a second water outlet hole are penetrated by the top inner wall of the water inlet channel close to the fixing frame, and a ball valve is integrally formed at the edge of the bottom opening of the second water outlet hole. Seat, a first ball valve is movably provided inside the ball valve seat, a gun body fixing column and a gun body liquid inlet are integrally formed on the other side of the top inner wall of the water inlet channel, an exhaust groove is integrally formed on the front end of the top inner wall of the water inlet channel, a piston assembly is movably provided on the upper end of the piston cavity, a valve and a water diverter are installed inside the water outlet channel, and the water diverter is located at the opening of the water outlet channel, a head cap is fixedly installed on one end of the water outlet channel away from the fixing frame, a large circle is provided at the bottom end of the water inlet channel for snap-fitting connection, a bottom cover assembly is provided inside the water inlet channel, an inverted section assembly is provided inside the bottom cover assembly, a wrench assembly is movably provided on the top of the gun body assembly, and an external spring assembly is provided at the bottom end of the extension frame;

[0008] The bottom cover assembly includes a straight tube and a circular plate, and the straight tube is fixedly arranged on the circular plate;

[0009] The inverted section assembly includes a horizontal tube, and the horizontal tube has only one end open, and the first liquid inlet pipe and the second liquid inlet pipe are respectively integrally formed on both sides of the top of the horizontal tube, and the bottom ends of the first liquid inlet pipe and the second liquid inlet pipe are both connected to the horizontal tube, and the bottom end of the horizontal tube is integrally formed with a liquid inlet pipe on one side close to the first liquid inlet pipe, and the liquid inlet pipe is connected to the inside of the horizontal tube;

[0010] The piston assembly includes a piston body, and a fixing block is integrally formed at the top of the piston body, and a limiting hole is provided through the middle of the front side of the fixing block;

[0011] The wrench assembly includes a wrench body, and a square groove matching the fixing block is formed through the top of the wrench body, and the wrench body is rotatably connected to the extension frame;

[0012] The external spring assembly includes a cross bar, and the cross bar is located at an angle between the top end of the limiting plate and the outer side wall of the water inlet channel.

[0013] Preferably, a gasket is movably sleeved at the bottom end of the circular plate, and the gasket is located at the bottom of the straight cylinder, and a straw is inserted at the bottom end of the liquid inlet pipe.

[0014] Preferably, a side hole is integrally formed at the bottom end of the front side of the piston chamber, and a side cover is snap-connected at the opening of the side hole, and a card slot is penetrated through the bottom end of the front side of the water inlet channel.

[0015] Preferably, the front and rear ends of the top of the circular plate are penetrated with liquid inlet channels, a circular hole is penetrated on one side of the top of the circular plate, and the bottom end of the liquid inlet pipe movably penetrates the circular hole and extends to the inside of the large circle.

[0016] Preferably, a limiting cylinder is integrally formed on the other side of the top of the circular plate, and a limiting rod is integrally formed on the inner wall of one side of the limiting cylinder, the top of the limiting cylinder is movably inserted into the extension cylinder, and the limiting rod is close to one side of the ball valve seat, and a clamping block is integrally formed on the bottom end of the front side of the circular plate, and the bottom cover assembly is snap-connected to the bottom cover assembly through the clamping block and the clamping groove.

[0017] Preferably, a ball valve groove is provided at the top opening of the first liquid inlet pipe, and a third ball valve is movably provided inside the ball valve groove, straight grooves are provided through the top of the front and back sides of the second liquid inlet pipe, and a second ball valve is movably provided at the lower end of the interior of the second liquid inlet pipe.

[0018] Preferably, the top end of the first liquid inlet pipe is matched with the liquid inlet of the gun body, and the top end of the first liquid inlet pipe is inserted into the interior of the liquid inlet of the gun body, the top end of the second liquid inlet pipe is matched with the fixed column of the gun body, and the top end of the second liquid inlet pipe is inserted into the interior of the fixed column of the gun body, and a sealing cover is sealed and inserted at the opening of the horizontal tube.

[0019] Preferably, the bottom end of the wrench body is provided with positioning grooves near the front and rear ends of the extension frame, and the bottom opening of the square groove is symmetrically and integrally formed with a piston limiting cylinder, and the piston limiting cylinder is adapted to the limiting hole.

[0020] Preferably, elastic rods are integrally formed at both ends of the outer side of the cross bar, and the elastic rods are arranged in a "C" shape, and a circular limit block is integrally formed at one end of the elastic rod, and the limit block is adapted to the positioning slot. The circular limit block can reduce friction and slide more smoothly inside the positioning slot. Limit ribs are symmetrically integrally formed in the middle of the inner side of the cross bar, and the two limit ribs are respectively located on both sides of the limit plate.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The present invention is provided with a gun body assembly, a bottom cover assembly and an inverted joint assembly, and a ball valve is arranged between the water inlet channel and the limit cylinder, and two ball valves are arranged on the inverted joint assembly. When spraying liquid in the forward direction, the wrench assembly is pressed to make the air inside the gun body assembly flow, the air pressure becomes smaller, the pressure outside the gun body assembly remains unchanged, a pressure difference is generated inside and outside the gun body assembly, and the liquid is sucked from the suction pipe, so that the third ball valve jumps upward, and the liquid is sucked into the gun body piston cylinder. Because the third ball valve has a smaller mass than the second ball valve, only the third ball valve will jump upward when suction is generated, and the second ball valve will not jump upward to cause liquid leakage, thereby forming a normal spray. The ball valve is used to replace the valve of the traditional spray pump, the ball valve has a fast jumping response, the water supply and discharge are more efficient, and the spray effect is improved. At the same time, the metal return spring is cancelled, and the liquid quality will not be affected by the rust of the spring.

[0023] 2. When the present invention is inverted, the second ball valve slides to the end of the second liquid inlet pipe away from the horizontal pipe due to gravity, thereby opening the seal. At the same time, the third ball valve opens the seal due to gravity, and the liquid flows into the interior of the straight tube from the liquid inlet channel. When the wrench assembly is squeezed, a pressure difference is formed, and the liquid is sucked into the interior of the piston cavity from the first liquid inlet pipe and the second liquid inlet pipe. When the wrench assembly is squeezed again, the third ball valve is pressed to the sealing surface due to water pressure to seal the first liquid inlet pipe, and the first ball valve is pushed open by the water pressure. The liquid enters the interior of the extension tube through the second water outlet hole and is finally sprayed out along the first water outlet hole and the water outlet channel, thereby realizing inverted liquid spraying and spraying all the liquid in the bottle, making it convenient to clean dead corners and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall explosion structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the present invention.

[0026] Figure 3 It is a schematic diagram of the gun body assembly structure of the present invention.

[0027] Figure 4 It is a schematic diagram of the bottom cover assembly structure of the present invention.

[0028] Figure 5 It is a schematic diagram of the inverted joint assembly structure of the present invention.

[0029] Figure 6 It is a schematic diagram of the piston assembly structure of the present invention.

[0030] Figure 7 It is a schematic diagram of the structure of the wrench assembly of the present invention.

[0031] Figure 8 It is a schematic diagram of the structure of the external spring assembly of the present invention.

[0032] In the figure: 1. gun body assembly; 2. large circle; 3. bottom cover assembly; 4. inverted section assembly; 5. piston assembly; 6. wrench assembly; 7. external spring assembly; 8. valve; 9. water diverter; 10. head cap; 11. shell; 12. gasket; 13. straw; 101. fixing frame; 102. piston chamber; 103. water outlet channel; 104. water inlet groove; 105. side hole; 106. side cover; 107. limit plate; 108. extension frame; 109. card slot; 110. extension tube; 111. first water outlet hole; 112. second water outlet hole; 113. ball valve seat; 114. gun body fixing column; 115. gun body liquid inlet; 116. exhaust groove; 117 , the first ball valve; 301, straight cylinder; 302, round plate; 303, clamping block; 304, limiting cylinder; 305, limiting rod; 306, liquid inlet hole; 307, round hole; 401, horizontal tube; 402, first liquid inlet pipe; 403, second liquid inlet pipe; 404, liquid inlet pipe; 405, second ball valve; 406, ball valve groove; 407, third ball valve; 408, sealing cover; 409, straight groove; 501, piston body; 502, fixing block; 503, limiting hole; 601, wrench body; 602, square groove; 603, piston limiting cylinder; 604, positioning slide groove; 701, cross bar; 702, elastic rod; 703, limiting block; 704, limiting rib. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention provides Figure 1-8The bidirectional hand trigger spray gun shown in the figure can spray liquid by inverting the product, including a gun body assembly 1, a shell 11 is provided on one side of the top of the gun body assembly 1 by snap connection, the gun body assembly 1 includes a fixing frame 101, a piston cavity 102 is integrally formed at the bottom end of one side of the fixing frame 101 close to the shell 11, a water outlet channel 103 is integrally formed at the other side of the fixing frame 101, the water outlet channel 103 is connected to the first water outlet hole 111, a water inlet channel 104 is integrally formed at the bottom end of the fixing frame 101, and the water inlet channel 104 has only a bottom opening, and the piston cavity 102 is away from the fixing frame 1 01 is integrally provided with an inclined extension frame 108, a side of the water inlet channel 104 close to the extension frame 108 is integrally provided with a limit plate 107, and the top of the limit plate 107 is inclined, and the top inner wall of the water inlet channel 104 is integrally provided with an extension cylinder 110 close to the fixed frame 101, and the top inner wall of the water inlet channel 104 is provided with a first water outlet hole 111 and a second water outlet hole 112 through the side of the fixed frame 101, and the bottom opening edge of the second water outlet hole 112 is integrally provided with a ball valve seat 113, and the ball valve seat 113 is integrally provided with a first water outlet hole 111 and a second water outlet hole 112 through the first water outlet hole 111 and a second water outlet hole 112. A first ball valve 117 is movably provided inside, a gun body fixing column 114 and a gun body liquid inlet 115 are integrally formed on the other side of the top inner wall of the water inlet channel 104, and an exhaust groove 116 is integrally formed on the top inner wall of the water inlet channel 104. The exhaust groove 116 is used to open the gap when the piston assembly 5 moves downward, exchange air with the outside, and keep the air pressure in the bottle balanced with the outside air pressure. The piston assembly 5 is movably provided on the upper end of the piston cavity 102, and a valve 8 and a water diverter 9 are installed inside the water outlet channel 103, and the water diverter 9 is located at the opening of the water outlet channel 103. 03 A head cap 10 is fixedly installed at one end away from the fixed frame 101, a large circle 2 is provided at the bottom end of the water inlet channel 104 by snap-fitting, a bottom cover assembly 3 is provided inside the water inlet channel 104, an inverted section assembly 4 is provided inside the bottom cover assembly 3, a wrench assembly 6 is movably provided at the top of the gun body assembly 1, an external spring assembly 7 is provided at the bottom end of the extension frame 108, a side hole 105 is integrally formed at the bottom front end of the piston chamber 102, and a side cover 106 is snap-fitted at the opening of the side hole 105, and a card slot 109 is penetrated through the bottom front end of the water inlet channel 104.

[0035] Furthermore, the bottom cover assembly 3 includes a straight cylinder 301 and a circular plate 302, and the straight cylinder 301 is fixedly penetrated on the circular plate 302, and the bottom end of the circular plate 302 is movably sleeved with a gasket 12, and the gasket 12 is located at the bottom of the straight cylinder 301, and the top front end and the rear end of the circular plate 302 are penetrated with a liquid inlet channel 306, and a circular hole 307 is penetrated on one side of the top of the circular plate 302, and the bottom end of the liquid inlet pipe 404 is movably penetrated through the circular hole 307 and extends To the inside of the large circle 2, a limiting cylinder 304 is integrally formed on the other side of the top of the circular plate 302, and a limiting rod 305 is integrally formed on the inner wall of one side of the limiting cylinder 304. The top of the limiting cylinder 304 is movably inserted into the extension cylinder 110, and the limiting rod 305 is close to one side of the ball valve seat 113. A clamping block 303 is integrally formed on the bottom end of the front side of the circular plate 302, and the bottom cover assembly 3 is connected to the bottom cover assembly 3 by a clamping block 303 and a clamping groove 109.

[0036] The inverted section assembly 4 includes a horizontal tube 401, and the horizontal tube 401 has only one end open. The first liquid inlet tube 402 and the second liquid inlet tube 403 are integrally formed on both sides of the top of the horizontal tube 401, and the bottom ends of the first liquid inlet tube 402 and the second liquid inlet tube 403 are both connected to the horizontal tube 401. The outer wall of the first liquid inlet tube 402 is sealed with the inner circular surface of the gun body liquid inlet port 115. The bottom end of the horizontal tube 401 is close to the first liquid inlet tube 402. The side is integrally formed with a liquid inlet tube 404, and the liquid inlet tube 404 is connected to the inside of the horizontal tube 401. The bottom end of the liquid inlet tube 404 is plugged into There is a suction pipe 13, a ball valve groove 406 is provided at the top opening of the first liquid inlet pipe 402, and a third ball valve 407 is movably provided inside the ball valve groove 406, a straight groove 409 is provided through the top of the front and back of the second liquid inlet pipe 403, a second ball valve 405 is movably provided at the lower end of the second liquid inlet pipe 403, the mass of the second ball valve 405 is greater than the third ball valve 407, a ball valve is used to replace the valve of the traditional liquid injection pump, the ball valve jumps and responds quickly, the water supply and discharge are more efficient, the liquid injection effect is improved, and the metal return spring is cancelled, and the liquid quality will not be affected by the rust of the spring. The top of the liquid pipe 402 is matched with the gun body liquid inlet 115, and the top of the first liquid inlet pipe 402 is inserted into the inside of the gun body liquid inlet 115, the top of the second liquid inlet pipe 403 is matched with the gun body fixed column 114, and the top of the second liquid inlet pipe 403 is inserted into the inside of the gun body fixed column 114, and the opening of the horizontal tube 401 is sealed and plugged with a sealing cover 408. When inverted, the second ball valve 405 slides to the end of the second liquid inlet pipe 403 away from the horizontal tube 401 due to gravity, thereby opening the seal, and at the same time, the third ball valve 407 opens the seal due to gravity, and the liquid flows into the liquid inlet channel 306 from the liquid inlet channel 306. When the wrench assembly 6 is squeezed inside the straight cylinder 301, a pressure difference is formed, and liquid is sucked into the piston chamber 102 from the first liquid inlet pipe 402 and the second liquid inlet pipe 403. When the wrench assembly 6 is squeezed again, the third ball valve 407 is pressed to the sealing surface due to water pressure to seal the first liquid inlet pipe 402, and the first ball valve 117 is pushed open by the water pressure, and the liquid enters the extension cylinder 110 through the second water outlet hole 112 and is finally sprayed out along the first water outlet hole 111 and the water outlet channel 103, thereby realizing inverted liquid spraying and spraying all the liquid in the bottle, making it convenient to clean dead corners and improving practicality.

[0037] The piston assembly 5 includes a piston body 501 , and a fixing block 502 is integrally formed at the top of the piston body 501 . A limiting hole 503 is formed through the middle of the front side of the fixing block 502 .

[0038] The wrench assembly 6 includes a wrench body 601, and a square groove 602 adapted to the fixed block 502 is formed through the top of the wrench body 601, and positioning grooves 604 are formed at the front and rear ends of the bottom of the wrench body 601 near the extension frame 108. The bottom opening of the square groove 602 is symmetrically integrally formed with a piston limiting cylinder 603, and the piston limiting cylinder 603 is adapted to the limiting hole 503, and the wrench body 601 is rotatably connected to the extension frame 108.

[0039] The external spring assembly 7 includes a cross bar 701, and the cross bar 701 is located at the angle between the top of the limit plate 107 and the outer wall of the water inlet channel 104. Both ends of the outer side of the cross bar 701 are integrally provided with elastic rods 702, and the elastic rods 702 are arranged in a "C" shape. The "C" shape can make the elastic rod 702 have better elastic force. One end of the elastic rod 702 is integrally provided with a circular limit block 703, and the limit block 703 is adapted to the positioning slide groove 604. The inner middle part of the cross bar 701 is symmetrically integrally provided with a limit rib 704, and the two limit ribs 704 are respectively located on both sides of the limit plate 107.

[0040] Working principle of the present invention:

[0041] When spraying liquid in the forward direction, the wrench assembly 6 is pressed to make the air inside the gun body assembly 1 flow, the air pressure becomes smaller, the pressure outside the gun body assembly 1 remains unchanged, and a pressure difference is generated inside and outside the gun body assembly 1. The liquid is sucked from the suction tube, causing the third ball valve 407 to jump upward, and the liquid is sucked into the gun body piston cylinder. Because the third ball valve 407 has a smaller mass than the second ball valve 405, only the third ball valve 407 will jump upward when suction is generated, and the second ball valve 405 will not jump upward to cause liquid leakage, thereby forming a normal liquid spray. The liquid flows into the interior of the piston chamber 102 from the first liquid inlet pipe 402. The wrench assembly 6 is pressed again. The third ball valve 407 is pressed to the sealing surface due to water pressure to seal the first liquid inlet pipe 402, and the first ball valve 117 is pushed open by the water pressure. The liquid enters the interior of the extension tube 110 through the second water outlet hole 112 and is finally sprayed out along the first water outlet hole 111 and the water outlet channel 103.

[0042] When the liquid is sprayed inverted, the second ball valve 405 slides to the end of the second liquid inlet pipe 403 away from the horizontal pipe 401 due to gravity, thereby opening the seal. At the same time, the third ball valve 407 opens the seal due to gravity, and the liquid flows into the interior of the straight cylinder 301 from the liquid inlet channel 306. When the wrench assembly 6 is squeezed, a pressure difference is formed, and the liquid is sucked into the interior of the piston chamber 102 from the first liquid inlet pipe 402 and the second liquid inlet pipe 403. When the wrench assembly 6 is squeezed again, the third ball valve 407 is pressed to the sealing surface due to water pressure to seal the first liquid inlet pipe 402, and the first ball valve 117 is pushed open by water pressure, and the liquid enters the extension cylinder 110 through the second water outlet hole 112 and is finally sprayed out along the first water outlet hole 111 and the water outlet channel 103.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-way hand trigger spray gun that can spray liquid by inverting the product, characterized by: It comprises a gun body assembly (1), wherein a shell (11) is provided on one side of the top end of the gun body assembly (1) in a snap-fit ​​connection; The gun body assembly (1) comprises a fixing frame (101), a piston chamber (102) is integrally formed at the bottom end of one side of the fixing frame (101) close to the housing (11), a water outlet channel (103) is integrally formed at the other side of the fixing frame (101), a water inlet channel (104) is integrally formed at the bottom end of the fixing frame (101), and only the bottom end of the water inlet channel (104) is open, and an inclined extension frame (108) is integrally formed at the side of the piston chamber (102) away from the fixing frame (101), A limiting plate (107) is integrally formed on one side of the water inlet channel (104) close to the extension frame (108), and the top of the limiting plate (107) is inclined; an extension tube (110) is integrally formed on one side of the top inner wall of the water inlet channel (104) close to the fixing frame (101); a first water outlet hole (111) and a second water outlet hole (112) are formed through one side of the top inner wall of the water inlet channel (104) close to the fixing frame (101), and a bottom opening edge of the second water outlet hole (112) is integrally formed. A ball valve seat (113) is provided, a first ball valve (117) is movably provided inside the ball valve seat (113), a gun body fixing column (114) and a gun body liquid inlet (115) are integrally formed on the other side of the top inner wall of the water inlet channel (104), an exhaust groove (116) is integrally formed on the front end of the top inner wall of the water inlet channel (104), a piston assembly (5) is movably provided at the upper end of the piston chamber (102), a valve (8) and a water diverter (9) are installed inside the water outlet channel (103), and the water diverter (9) is located at the opening of the water outlet channel (103), a head cap (10) is fixedly installed at one end of the water outlet channel (103) away from the fixing frame (101), a large circle (2) is provided at the bottom end of the water inlet channel (104) in a snap-fit ​​connection, a bottom cover assembly (3) is provided inside the water inlet channel (104), an inverted section assembly (4) is provided inside the bottom cover assembly (3), a wrench assembly (6) is provided at the top of the gun body assembly (1), and an external spring assembly (7) is provided at the bottom end of the extension frame (108); The bottom cover assembly (3) comprises a straight cylinder (301) and a circular plate (302), and the straight cylinder (301) is fixedly disposed through the circular plate (302); The inverted joint assembly (4) comprises a horizontal tube (401), and the horizontal tube (401) has only one end open, and a first liquid inlet tube (402) and a second liquid inlet tube (403) are integrally formed on both sides of the top of the horizontal tube (401), and the bottom ends of the first liquid inlet tube (402) and the second liquid inlet tube (403) are both connected to the horizontal tube (401), and a liquid inlet tube (404) is integrally formed on a side of the bottom end of the horizontal tube (401) close to the first liquid inlet tube (402), and the liquid inlet tube (404) is connected to the inside of the horizontal tube (401); The piston assembly (5) comprises a piston body (501), and a fixing block (502) is integrally formed at the top of the piston body (501), and a limiting hole (503) is provided through the middle of the front side of the fixing block (502); The wrench assembly (6) comprises a wrench body (601), and a square groove (602) adapted to the fixing block (502) is formed through the top of the wrench body (601), and the wrench body (601) is rotatably connected to the extension frame (108); The external spring assembly (7) comprises a cross bar (701), and the cross bar (701) is located at an angle between the top end of the limiting plate (107) and the outer side wall of the water inlet channel (104).

2. A two-way trigger spray gun capable of spraying liquid upside down according to claim 1, characterized in that: A gasket (12) is movably sleeved at the bottom end of the circular plate (302), and the gasket (12) is located at the bottom of the straight cylinder (301). A suction tube (13) is inserted at the bottom end of the liquid inlet pipe (404).

3. A two-way trigger spray gun capable of spraying liquid upside down according to claim 2, characterized in that: The front bottom end of the piston chamber (102) is integrally formed with a side hole (105), and a side cover (106) is snap-fittedly connected at the opening of the side hole (105), and a slot (109) is penetrated through the front bottom end of the water inlet channel (104).

4. A two-way trigger spray gun capable of spraying liquid upside down according to claim 3, characterized in that: The front and rear ends of the top of the circular plate (302) are both penetrated by a liquid inlet channel (306), a circular hole (307) is penetrated on one side of the top end of the circular plate (302), and the bottom end of the liquid inlet pipe (404) movably penetrates the circular hole (307) and extends to the inside of the large circle (2).

5. A two-way trigger spray gun capable of spraying liquid upside down according to claim 4, characterized in that: A limiting cylinder (304) is integrally formed on the other side of the top of the circular plate (302), and a limiting rod (305) is integrally formed on the inner wall of one side of the limiting cylinder (304). The top of the limiting cylinder (304) is movably inserted into the interior of the extension cylinder (110), and the limiting rod (305) is close to one side of the ball valve seat (113). A clamping block (303) is integrally formed on the bottom end of the front face of the circular plate (302), and the bottom cover assembly (3) is snap-connected to the bottom cover assembly (3) via the clamping block (303) and the clamping groove (109).

6. A two-way trigger spray gun capable of spraying liquid upside down according to claim 5, characterized in that: A ball valve groove (406) is provided at the top opening of the first liquid inlet pipe (402), and a third ball valve (407) is movably provided inside the ball valve groove (406). Straight grooves (409) are provided through the top of the front and back surfaces of the second liquid inlet pipe (403), and a second ball valve (405) is movably provided at the lower end of the second liquid inlet pipe (403).

7. A two-way trigger spray gun capable of spraying liquid upside down according to claim 6, characterized in that: The top end of the first liquid inlet pipe (402) is matched with the liquid inlet port (115) of the gun body, and the top end of the first liquid inlet pipe (402) is inserted into the interior of the liquid inlet port (115) of the gun body; the top end of the second liquid inlet pipe (403) is matched with the gun body fixing column (114), and the top end of the second liquid inlet pipe (403) is inserted into the interior of the gun body fixing column (114); and a sealing cover (408) is provided at the opening of the horizontal tube (401) for sealing insertion.

8. A two-way trigger spray gun capable of spraying liquid upside down according to claim 7, characterized in that: The bottom end of the wrench body (601) is provided with positioning grooves (604) at the front and rear ends close to the extension frame (108), and the bottom opening of the square groove (602) is symmetrically integrally formed with a piston limiting cylinder (603), and the piston limiting cylinder (603) is adapted to the limiting hole (503).

9. A two-way trigger spray gun capable of spraying liquid upside down according to claim 8, characterized in that: Both ends of the outer side of the cross bar (701) are integrally provided with elastic rods (702), and the elastic rods (702) are arranged in a "C" shape. One end of the elastic rod (702) is integrally provided with a circular limit block (703), and the limit block (703) is adapted to the positioning slide groove (604). The inner middle part of the cross bar (701) is symmetrically integrally provided with limit ribs (704), and the two limit ribs (704) are respectively located on both sides of the limit plate (107).

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