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

Abstract

The utility model 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, 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 utility model relates to a liquid spray pump technical field, especially in two -way hand buckle formula spray gun can be inverted to spray liquid product. BACKGROUND

[0002] At present, pump spray heads are widely used in various fields of life, such as can be used on the watering can and the oil can in the kitchen, and the pump spray head is detachably installed on the bottle, jar or kettle. The basic principle of the pump spray head on the market at present is to use the movement of the piston in the pump body to make the gas in the pump body flow, the pressure becomes smaller, the pressure outside the pump body does not change, and the pressure difference between the inside and outside of the pump body is generated, so that the liquid is guided out of the pump body through the pressure difference.

[0003] However, the existing liquid spray pump cannot be inverted to clean when using the spray gun. For example, when cleaning the concave groove under the washing table and the concave groove of the toilet, the product needs to be inverted to spray. Because of the position problem of the inverted spray inlet, there is still a lot of liquid when the product is inverted, but it cannot be sucked, and it needs to be sprayed normally to complete the spraying. Inverted cleaning cannot be performed, and the practicality is poor.

[0004] Therefore, it is necessary to invent a two-way hand buckle type spray gun that can invert the product to spray liquid to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a two-way hand buckle type spray gun that can invert the product to spray liquid to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a two-way hand buckle type spray gun that can invert the product to spray liquid, comprising a gun body assembly, the top end of the gun body assembly is buckled and connected with an outer shell on one side;

[0007] The gun body assembly comprises a fixed frame, a piston cavity is integrally arranged on one side of the bottom end of the fixed frame, a water outlet channel is integrally arranged on the other side of the fixed frame, a water inlet channel is integrally arranged on the bottom end of the fixed frame, only the bottom end of the water inlet channel is open, an extension frame is integrally arranged on the side of the piston cavity away from the fixed frame, a limiting plate is integrally arranged on the side of the water inlet channel close to the extension frame, the top end of the limiting plate is arranged in an inclined manner, an extension cylinder is integrally arranged on the inner wall of the top end of the water inlet channel close to the fixed frame, a first water outlet hole and a second water outlet hole are formed through the inner wall of the top end of the water inlet channel close to the fixed frame, a ball valve seat is integrally arranged on the edge of the bottom end opening of the second water outlet hole, a first ball valve is movably arranged in the ball valve seat, a gun body fixing column and a gun body liquid inlet are integrally arranged on the other side of the inner wall of the top end of the water inlet channel, an exhaust groove is integrally arranged on the front end of the inner wall of the top end of the water inlet channel, a piston assembly is movably arranged in the upper end of the piston cavity, a valve and a water distribution head are arranged in the water outlet channel, and the water distribution head is located at the opening of the water outlet channel, a head cap is fixedly arranged on the end of the water outlet channel away from the fixed frame, a large ring is snap-fitted on the bottom end of the water inlet channel, a bottom cover assembly is arranged in the water inlet channel, an inverted joint assembly is arranged in the bottom cover assembly, a wrench assembly is movably arranged on the top of the gun body assembly, and an external spring assembly is arranged on the bottom end of the extension frame.

[0008] The bottom cover assembly comprises a straight cylinder and a circular plate, and the straight cylinder is fixedly arranged through the circular plate.

[0009] The inverted joint assembly comprises a horizontal pipe, and only one end of the horizontal pipe is open, a first liquid inlet pipe and a second liquid inlet pipe are integrally arranged on the top end of the horizontal pipe, the bottom end of each of the first liquid inlet pipe and the second liquid inlet pipe is communicated with the horizontal pipe, and a liquid inlet pipe is integrally arranged on the side of the bottom end of the horizontal pipe close to the first liquid inlet pipe.

[0010] The piston assembly comprises a piston body, a fixing block is integrally arranged on the top end of the piston body, and a limiting hole is formed through the middle of the front face of the fixing block.

[0011] The wrench assembly comprises a wrench body, a square slot matched with the fixing block is formed through the top end of the wrench body, and the wrench body is rotatably connected with the extension frame.

[0012] The external spring assembly comprises a horizontal rod, and the horizontal rod is located at the intersection of the top end of the limiting plate and the outer side wall of the water inlet channel.

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

[0014] Preferably, the front end of the piston cavity is integrally provided with a side hole, and the opening of the side hole is buckled and connected with a side cover; and the front end of the water inlet channel is provided with a clamping groove.

[0015] Preferably, the top end of the circular plate is provided with a liquid inlet channel, and the top end of the circular plate is provided with a circular hole; and the bottom end of the liquid inlet pipe is movably inserted into the circular hole and extends into the inner part of the large circle.

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

[0017] Preferably, the top end of the first liquid inlet pipe is provided with a ball valve groove, and the inside of the ball valve groove is movably provided with a third ball valve; the front end and the back end of the second liquid inlet pipe are provided with a straight groove; and the lower end of the inside of the second liquid inlet pipe is movably provided with a second ball valve.

[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 inside of the liquid inlet of the gun body; the top end of the second liquid inlet pipe is matched with the fixing column of the gun body, and the top end of the second liquid inlet pipe is inserted into the inside of the fixing column of the gun body; and the opening of the horizontal pipe is sealingly inserted with a sealing cover.

[0019] Preferably, the bottom end of the wrench body is provided with a positioning sliding groove close to the front end and the rear end of the extension frame; and the bottom end of the square groove is integrally provided with a piston limiting cylinder on the opening in a symmetrical manner.

[0020] Preferably, the outer sides of both ends of the cross rod are integrally provided with elastic rods, and the elastic rods are arranged in a "C" shape; one end of the elastic rod is integrally provided with a limiting block arranged in a circular shape, and the limiting block is matched with the positioning sliding groove; the limiting block is arranged in a circular shape to reduce friction, and is more smooth when sliding in the positioning sliding groove; and the inner side of the middle part of the cross rod is integrally provided with a limiting rib in a symmetrical manner, and the two limiting ribs are respectively located on both sides of the limiting plate.

[0021] The technical effects and advantages of the utility model are as follows:

[0022] 1. The utility model discloses a gun body assembly, bottom cover assembly and the setting of inverted joint assembly, and the ball valve is set between the water inlet channel and the limiting cylinder, two ball valves are set on the inverted joint assembly, when the liquid is sprayed in the positive direction, press the wrench assembly, make the air flow in the gun body assembly, the air pressure becomes small, the pressure of the gun body assembly outside does not change, the pressure difference is produced in the gun body assembly inside and outside, the liquid is sucked from the suction pipe, makes third ball valve jump upwards, the liquid is sucked into the gun body piston cylinder, because third ball valve is smaller than second ball valve in quality, so only third ball valve will jump upwards when the suction force is produced, second ball valve will not jump upwards and produce liquid leakage, thereby forming normal liquid spray, the ball valve replaces the valve of traditional liquid spray pump, the ball valve jumps and reacts fast, the water supply is more efficient, improves the liquid spray effect, cancels the metal reset spring simultaneously, and the liquid quality will not be affected because of spring rust.

[0023] 2. When the utility model is inverted, second ball valve slides to the one end of second liquid inlet pipe away from horizontal pipe due to gravity, thereby opening the seal, and third ball valve opens the seal due to gravity, liquid flows into the inside of straight cylinder from liquid inlet channel, forms the pressure difference when the wrench assembly is pressed, liquid is sucked into the inside of piston cavity from first liquid inlet pipe and second liquid inlet pipe, third ball valve is sealed to first liquid inlet pipe because of water pressure when the wrench assembly is pressed again, and first ball valve is pushed away by water pressure, liquid enters the inside of extension cylinder through second water outlet hole and is finally sprayed out along first water outlet hole and water outlet channel, thereby can realize inverted liquid spray, can spray all liquid in the bottle, convenient for cleaning dead angle, improve practicality. ACCURATE DRAWINGS

[0024] Figure 1 It is the whole explosion structure schematic diagram of the utility model.

[0025] Figure 2 It is the whole part sectional view structure schematic diagram of the utility model.

[0026] Figure 3 It is the gun body assembly structure schematic diagram of the utility model.

[0027] Figure 4 It is the bottom cover assembly structure schematic diagram of the utility model.

[0028] Figure 5 It is the inverted joint assembly structure schematic diagram of the utility model.

[0029] Figure 6 It is the piston assembly structure schematic diagram of the utility model.

[0030] Figure 7 It is the wrench assembly structure schematic diagram of the utility model.

[0031] Figure 8 It is the external spring assembly structure schematic diagram of the utility model.

[0032] In the figure: 1, gun body assembly; 2, big circle; 3, bottom cover assembly; 4, inverted joint assembly; 5, piston assembly; 6, wrench assembly; 7, external spring assembly; 8, valve; 9, water distribution head; 10, head cap; 11, shell; 12, gasket; 13, suction pipe; 101, fixing frame; 102, piston cavity; 103, water outlet channel; 104, water inlet slot; 105, side hole; 106, side cover; 107, limiting plate; 108, extension frame; 109, clamping groove; 110, extension cylinder; 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, first ball valve; 301, straight cylinder; 302, round plate; 303, clamping block; 304, limiting cylinder; 305, limiting rod; 306, liquid inlet through hole; 307, round hole; 401, horizontal pipe; 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, fixed block; 503, limiting hole; 601, wrench body; 602, square groove; 603, piston limiting cylinder; 604, positioning sliding groove; 701, cross rod; 702, elastic rod; 703, limiting block; 704, limiting rib. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] The present application provides Figures 1-8The utility model provides a kind of two-way hand buckle type spray gun that product can be inverted and sprayed, including gun body assembly 1, the top side buckle connection of gun body assembly 1 is provided with shell 11, gun body assembly 1 includes fixed frame 101, fixed frame 101 is integrally formed with piston cavity 102 on the side bottom end close to shell 11, the other side of fixed frame 101 is integrally formed with water outlet passage 103, water outlet passage 103 is communicated with first water outlet hole 111, the bottom end of fixed frame 101 is integrally formed with water inlet passage 104, and only bottom end of water inlet passage 104 is opened, piston cavity 102 is integrally formed with extension frame 108 being inclinedly arranged on the side away from fixed frame 101, water inlet passage 104 is integrally formed with limit plate 107 on the side close to extension frame 108, and the top end of limit plate 107 is inclinedly arranged, the top end inner wall of water inlet passage 104 is integrally formed with extension cylinder 110 on the side close to fixed frame 101, the top end inner wall of water inlet passage 104 is penetrated and set with first water outlet hole 111 and second water outlet hole 112 on the side close to fixed frame 101, and the bottom end opening edge of second water outlet hole 112 is integrally formed with ball valve seat 113, first ball valve 117 is movably arranged in ball valve seat 113, the top end inner wall of water inlet passage 104 is integrally formed with gun body fixing column 114 and gun body liquid inlet 115 on the other side, the top end inner wall of water inlet passage 104 is integrally formed with exhaust groove 116, exhaust groove 116 is used when piston assembly 5 moves downward, opening gap, with ambient air exchange, keep bottle air pressure and ambient air pressure balance, piston cavity 102 is movably arranged with piston assembly 5 in the inside upper end, valve 8 and water distribution head 9 are installed in the inside of water outlet passage 103, and water distribution head 9 is located at the opening of water outlet passage 103, head cap 10 is fixedly installed at the end away from fixed frame 101 of water outlet passage 103, the bottom end of water inlet passage 104 is buckled and sleeved with big ring 2, water inlet passage 104 is provided with bottom cover assembly 3 inside, bottom cover assembly 3 is provided with inverted joint assembly 4 inside, gun body assembly 1 top movably sleeved with spanner assembly 6, extension frame 108 is provided with external spring assembly 7 at the bottom end, the front bottom end of piston cavity 102 is integrally formed with side hole 105, and side hole 105 is buckled and connected with side cover 106 at opening, the front bottom end of water inlet passage 104 is penetrated and set with clamping groove 109.

[0035] Further, the bottom cover assembly 3 comprises a straight cylinder 301 and a round plate 302, the straight cylinder 301 is fixedly and penetratingly arranged on the round plate 302, the bottom end of the round plate 302 movably and sleevedly arranged with a gasket 12, the gasket 12 is located at the bottom of the straight cylinder 301, the top end of the round plate 302 is penetratingly and openingly arranged with liquid inlet channels 306 at the front end and the rear end, the top end of the round plate 302 is penetratingly and openingly arranged with a round hole 307 at one side, the bottom end of the liquid inlet pipe 404 movably penetrates the round hole 307 and extends into the inside of the large ring 2, the top end of the round plate 302 is integrally and formedly arranged with a limiting cylinder 304 at the other side, the inside wall of one side of the limiting cylinder 304 is integrally and formedly arranged with a limiting rod 305, the top end of the limiting cylinder 304 movably inserts into the inside of the extending cylinder 110, the limiting rod 305 is close to one side of the ball valve seat 113, the front bottom end of the round plate 302 is integrally and formedly arranged with a clamping block 303, and the bottom cover assembly 3 is buckledly connected with the bottom cover assembly 3 through the clamping block 303 and the clamping groove 109.

[0036] The inverted joint assembly 4 comprises a horizontal pipe 401, and the horizontal pipe 401 is open at only one end, and a first liquid inlet pipe 402 and a second liquid inlet pipe 403 are integrally arranged on the top end of the horizontal pipe 401 on both sides respectively, and the bottom end of the first liquid inlet pipe 402 and the second liquid inlet pipe 403 are communicated with the horizontal pipe 401, the outer side wall of the first liquid inlet pipe 402 is sealed with the inner circular surface of the liquid inlet port 115 of the gun body, and the bottom end of the liquid inlet pipe 404 is integrally arranged on the side of the bottom end of the horizontal pipe 401 close to the first liquid inlet pipe 402, and the liquid inlet pipe 404 is communicated with the inside of the horizontal pipe 401, and the bottom end of the liquid inlet pipe 404 is inserted and arranged with the suction pipe 13, the top end opening of the first liquid inlet pipe 402 is provided with a ball valve groove 406, and the inside of the ball valve groove 406 is movably provided with a third ball valve 407, and the top end of the front and back of the second liquid inlet pipe 403 is provided with a straight groove 409, and the inside of the second liquid inlet pipe 403 is movably provided with a second ball valve 405, and the mass of the second ball valve 405 is greater than that of the third ball valve 407, the ball valve is used instead of the valve of the traditional liquid injection pump, the ball valve jumps and reacts quickly, and the water is more efficient, the liquid injection effect is improved, the metal return spring is cancelled, and the liquid quality is not affected by the rust of the spring, 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 inside 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 inside of the gun body fixing column 114, and the opening of the horizontal pipe 401 is sealingly inserted with a sealing cover 408, when the bottle is 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, and the third ball valve 407 opens the seal due to gravity, liquid flows into the inside of the straight cylinder 301 from the liquid inlet channel 306, when the wrench assembly 6 is squeezed, a pressure difference is formed, liquid is sucked into the inside of the piston cavity 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 to seal the first liquid inlet pipe 402 due to water pressure, and the first ball valve 117 is pushed away by water pressure, liquid enters the extension cylinder 110 inside through the second water outlet hole 112, and finally is sprayed out along the first water outlet hole 111 and the water outlet channel 103, so that inverted liquid injection can be realized, all liquid in the bottle can be sprayed out, dead angle cleaning is facilitated, and practicability is improved.

[0037] The piston assembly 5 comprises a piston body 501, and the top end of the piston body 501 is integrally provided with a fixing block 502, and the front middle part of the fixing block 502 is provided with a limiting hole 503.

[0038] The wrench assembly 6 comprises a wrench body 601, and a square slot 602 adapted to the fixing block 502 is formed through the top end of the wrench body 601; positioning sliding grooves 604 are formed at the bottom end of the wrench body 601 close to the front end and the rear end of the extension frame 108; a piston limiting cylinder 603 is integrally formed at the bottom end opening of the square slot 602 in a symmetrical manner, and the piston limiting cylinder 603 is adapted to the limiting hole 503; and the wrench body 601 is rotationally connected with the extension frame 108.

[0039] The external spring assembly 7 comprises a horizontal rod 701 located at the top end of the limiting plate 107 and the outside wall of the water inlet channel 104, and elastic rods 702 are integrally formed at the two ends of the horizontal rod 701 in a symmetrical manner, and the elastic rods 702 are arranged in a "C" shape, so that the elastic rods 702 have better elasticity; a limiting block 703 in a circular shape is integrally formed at one end of the elastic rod 702, and the limiting block 703 is adapted to the positioning sliding groove 604; limiting ribs 704 are integrally formed at the middle part of the inner side of the horizontal rod 701 in a symmetrical manner, and the two limiting ribs 704 are located at the two sides of the limiting plate 107, respectively.

[0040] Principle of the utility model:

[0041] When the liquid is sprayed in the normal direction, the wrench assembly 6 is pressed, so that the air in the gun body assembly 1 flows, the air pressure becomes smaller, the pressure outside the gun body assembly 1 does not change, and the pressure difference is generated between the inside and the outside of the gun body assembly 1, the liquid is sucked into the suction pipe, the third ball valve 407 jumps upward, and the liquid is sucked into the piston cylinder, because the mass of the third ball valve 407 is smaller than that of the second ball valve 405, only the third ball valve 407 jumps upward when the suction force is generated, the second ball valve 405 does not jump upward to cause the liquid to leak, so that normal liquid spraying is formed, the liquid flows into the inside of the piston cavity 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 to seal the first liquid inlet pipe 402 due to the water pressure, and the first ball valve 117 is pushed away by the water pressure, the liquid enters the extension cylinder 110 through the second water outlet hole 112, and finally is sprayed along the first water outlet hole 111 and the water outlet channel 103;

[0042] When the liquid is sprayed in the inverted direction, 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, so as to open the seal, and the third ball valve 407 opens the seal due to gravity, the liquid flows into the inside of the straight cylinder 301 from the liquid inlet channel 306, the pressure difference is formed when the wrench assembly 6 is squeezed, the liquid is sucked into the inside of the piston cavity 102 from the first liquid inlet pipe 402 and the second liquid inlet pipe 403, the third ball valve 407 is pressed to the sealing surface to seal the first liquid inlet pipe 402 due to the water pressure when the wrench assembly 6 is squeezed again, and the first ball valve 117 is pushed away by the water pressure, the liquid enters the extension cylinder 110 through the second water outlet hole 112, and finally is sprayed along the first water outlet hole 111 and the water outlet channel 103.

[0043] It should be pointed out finally that: the above only for the preferred embodiments of the utility model have, and do not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A two-way hand-operated spray gun that can spray liquid while the product is inverted, characterized in that: It includes a gun body assembly (1), and a shell (11) is snap-fitted to one side of the top of the gun body assembly (1). The gun assembly (1) includes a mounting bracket (101). A piston chamber (102) is integrally formed at the bottom end of the mounting bracket (101) near the outer shell (11). A water outlet channel (103) is integrally formed on the other side of the mounting bracket (101). A water inlet channel (104) is integrally formed at the bottom end of the mounting bracket (101), and the water inlet channel (104) has only an opening at the bottom end. An inclined extension bracket (108) is integrally formed on the side of the piston chamber (102) away from the mounting bracket (101). A limiting plate (107) is integrally formed on the side of the water inlet channel (104) near the extension frame (108), and the top of the limiting plate (107) is inclined. An extension cylinder (110) is integrally formed on the inner wall of the top of the water inlet channel (104) near the fixing frame (101). A first water outlet (111) and a second water outlet (112) are opened through the inner wall of the top of the water inlet channel (104) near the fixing frame (101), and the bottom opening edge of the second water outlet (112) is integrally formed. There is a ball valve seat (113), and a first ball valve (117) is movably installed inside the ball valve seat (113). A gun body fixing post (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 at the front end of the top inner wall of the water inlet channel (104). A piston assembly (5) is movably installed at the upper end of the piston chamber (102). A valve (8) and a water distributor (9) are installed inside the water outlet channel (103). (9) At the opening of the water outlet channel (103), a cap (10) is fixedly installed at one end of the water outlet channel (103) away from the fixed frame (101). A large ring (2) is snapped into the bottom end of the water inlet channel (104). A bottom cover assembly (3) is installed inside the water inlet channel (104). An inverted section assembly (4) is installed inside the bottom cover assembly (3). A wrench assembly (6) is movably connected to the top of the gun body assembly (1). An external spring assembly (7) is installed at the bottom end of the extension frame (108). The bottom cover assembly (3) includes a straight cylinder (301) and a circular plate (302), and the straight cylinder (301) is fixedly disposed on the circular plate (302); The inverted section assembly (4) includes a horizontal tube (401), and the horizontal tube (401) is open at only one end. The top two sides of the horizontal tube (401) are respectively integrally formed with a first liquid inlet tube (402) and a second liquid inlet tube (403), and the bottom ends of the first liquid inlet tube (402) and the second liquid inlet tube (403) are connected to the horizontal tube (401). The bottom end of the horizontal tube (401) near the side of the first liquid inlet tube (402) is integrally formed with a liquid inlet tube (404), and the liquid inlet tube (404) is connected to the interior of the horizontal tube (401). The piston assembly (5) includes a piston body (501), and a fixing block (502) is integrally formed on the top of the piston body (501). A limiting hole (503) is opened through the center of the front side of the fixing block (502). The wrench assembly (6) includes a wrench body (601), and a square groove (602) adapted to the fixing block (502) is provided through the top of the wrench body (601). The wrench body (601) is rotatably connected to the extension frame (108). The external spring assembly (7) includes a crossbar (701), and the crossbar (701) is located at the angle between the top of the limiting plate (107) and the outer wall of the water inlet channel (104).

2. The bidirectional hand-operated spray gun according to claim 1, characterized in that: The bottom end of the circular plate (302) is movably fitted with a washer (12), and the washer (12) is located at the bottom of the straight cylinder (301). The bottom end of the liquid inlet pipe (404) is fitted with a suction tube (13).

3. A bidirectional hand-operated spray gun for spraying liquid while the product is inverted, as described in claim 2, characterized in that: The piston chamber (102) has a side hole (105) integrally formed at the bottom front end, and a side cover (106) is snap-fitted at the opening of the side hole (105). The water inlet channel (104) has a slot (109) through it at the bottom front end.

4. A two-way hand-operated spray gun for spraying liquid while the product is inverted, as described in claim 3, characterized in that: The top front end and rear end of the circular plate (302) are provided with liquid inlet channels (306), and a circular hole (307) is provided on one side of the top end of the circular plate (302). The bottom end of the liquid inlet pipe (404) is movably passed through the circular hole (307) and extends into the interior of the large circle (2).

5. A two-way hand-operated spray gun for spraying liquid while the product is inverted, as described in 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 one side of the inner wall 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 the ball valve seat (113). A locking block (303) is integrally formed on the bottom front of the circular plate (302), and the bottom cover assembly (3) is snapped together with the bottom cover assembly (3) through the locking block (303) and the locking groove (109).

6. A bidirectional hand-operated spray gun for spraying liquid while the product is inverted, as described in claim 5, characterized in that: The first liquid inlet pipe (402) has a ball valve groove (406) at the top opening, and a third ball valve (407) is movably installed inside the ball valve groove (406). The second liquid inlet pipe (403) has a straight groove (409) through the top of both the front and back sides, and a second ball valve (405) is movably installed inside the lower end of the second liquid inlet pipe (403).

7. A bidirectional hand-operated spray gun for spraying liquid while the product is inverted, as described in claim 6, characterized in that: The top end of the first liquid inlet pipe (402) is adapted to the liquid inlet (115) of the gun body, and the top end of the first liquid inlet pipe (402) is inserted into the inside of the liquid inlet (115) of the gun body. The top end of the second liquid inlet pipe (403) is adapted to the gun body fixing post (114), and the top end of the second liquid inlet pipe (403) is inserted into the inside of the gun body fixing post (114). A sealing cap (408) is provided at the opening of the horizontal pipe (401).

8. A bidirectional hand-operated spray gun for spraying liquid while the product is inverted, as described in claim 7, characterized in that: The bottom end of the wrench body (601) is provided with positioning grooves (604) near the front and rear ends of the extension frame (108). The bottom opening of the square groove (602) is symmetrically and integrally formed with piston limiting cylinders (603), and the piston limiting cylinders (603) are adapted to the limiting holes (503).

9. A bidirectional hand-operated spray gun for spraying liquid while the product is inverted, as described in claim 8, characterized in that: Both outer ends of the crossbar (701) are integrally formed with elastic rods (702), and the elastic rods (702) are C-shaped. One end of the elastic rod (702) is integrally formed with a circular limiting block (703), and the limiting block (703) is adapted to the positioning groove (604). The middle inner side of the crossbar (701) is symmetrically formed with limiting ribs (704), and the two limiting ribs (704) are located on both sides of the limiting plate (107).

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