Liquid mixing device for cleaning water gun

Abstract

The utility model discloses a liquid mixing device for cleaning a water gun, which comprises a liquid mixing pipe and a liquid storage bottle, and is mainly characterized in that an adjustably mounted foam nozzle is arranged at the front end of the liquid mixing pipe, a liquid mixing port and a liquid suction cavity are arranged in the liquid mixing pipe, an air inlet is arranged on the liquid mixing pipe, the air inlet, the liquid suction cavity and the liquid mixing port are communicated in sequence, a liquid suction pipe is arranged in the liquid storage bottle, and the liquid suction pipe is communicated with the liquid suction cavity. The lower end of the liquid suction pipe extends into the cleaning liquid stored in the liquid storage bottle, and the upper end of the liquid suction pipe is communicated with the liquid suction cavity or separates the liquid suction cavity; thus, when the upper end of the liquid suction pipe is communicated with the liquid suction cavity, air pressure siphoning can be formed when water enters the liquid mixing opening, then cleaning liquid and external air are sucked into the liquid mixing opening through the liquid suction pipe together, and after the air, the water and the cleaning liquid are mixed together at the liquid mixing opening, the air, the water and the cleaning liquid are conveyed to the foam nozzle through the water guide pipe in the liquid mixing pipe to spray out foam. Therefore, the liquid mixing device not only can master the usage amount and the mixing concentration of the cleaning liquid at any time, but also can control the mixing or interruption of the cleaning liquid, and is simple to use and convenient to operate.

Description

Technical Field

[0001] The utility model relates to a liquid mixing device, in particular to a liquid mixing device for cleaning a water gun. Background Art

[0002] At present, cleaning water guns can be used for spraying and watering landscaping, and can also be used to rinse dirty items. When used for rinsing dirty items, in order to improve the rinsing efficiency and cleaning cleanliness, a mixing device is often installed at the water outlet of the water gun. The structure of the mixing device usually includes a mixing pipe and a liquid storage bottle, and the rear end of the mixing pipe is detachably mounted on the water outlet of the water gun, and the liquid storage bottle has cleaning liquid built in and is detachably mounted on the mixing pipe. In this way, when in use, the water inlet of the water gun outlet needs to enter the liquid storage bottle through the mixing pipe, and be diluted and mixed with the cleaning liquid in the liquid storage bottle before being sprayed out together for use, that is, the water inlet needs to be mixed with all the cleaning liquids before it can be sprayed. This liquid mixing method not only makes it impossible for users to understand the amount of cleaning liquid used and the mixed concentration after use, but also makes the mixed water and cleaning liquid still in liquid state after spraying, and cannot achieve the best foam state for mixed use; at the same time, after the liquid mixing device is installed at the water outlet end of the water gun, it can only be used for flushing dirty items. Only by manually removing the liquid mixing device can it be used for spraying and watering landscaping. Obviously, this method of use is quite troublesome and inconvenient; in addition, after the water is mixed with the cleaning liquid, the spraying direction is adjusted and the water shape is changed by adjusting multiple nozzles. In actual operation, the nozzles need to be switched frequently, which is more troublesome. Utility Model Content

[0003] The technical problem to be solved by the present utility model is to overcome the defects of the prior art and provide a liquid mixing device for a cleaning water gun which can not only control the usage amount and mixing concentration of the cleaning liquid at any time, but also can mix and spray it in a foam state, and can also control the mixing or interruption of the cleaning liquid, and is simple to use and easy to operate.

[0004] The technical problem of the utility model is achieved through the following technical solutions:

[0005] A liquid mixing device for a cleaning water gun comprises a liquid mixing tube and a liquid storage bottle. The rear end of the liquid mixing tube is detachably mounted on the water outlet of the water gun, and the liquid storage bottle is detachably mounted on the liquid mixing tube. The front end of the liquid mixing tube is provided with an adjustably mounted foam nozzle. A sealed water guide pipe is provided in the liquid mixing tube. The rear end of the water guide pipe is provided with a trumpet-shaped liquid mixing port. A liquid suction cavity is formed between the rear end of the water guide pipe and the liquid mixing tube. An air inlet is provided on the liquid mixing tube. The air inlet, the liquid suction cavity and the liquid mixing port are sequentially connected. A pipette is provided in the liquid storage bottle, and the lower end of the pipette extends into the cleaning liquid stored in the liquid storage bottle, and the upper end of the pipette is connected to the liquid suction cavity or blocks the liquid suction cavity; the upper end of the pipette is connected to the liquid suction cavity, and water enters the mixing port to form an air pressure siphon, and the air pressure siphon sucks the cleaning liquid in the liquid storage bottle and the outside air through the air inlet into the mixing port through the pipette, and after the air, water and cleaning liquid are mixed together at the mixing port, they are transported to the foam nozzle through the water guide pipe to spray foam.

[0006] The bottom of the mixing tube is provided with a connecting seat, and a suction hole connected to the liquid suction chamber is provided between the mixing tube and the connecting seat, and the connecting seat is provided with an external vent hole connected to the outside; the connecting seat is provided with a valve core that rotates at a fixed angle around the axis of the connecting seat; the liquid storage bottle is detachably mounted on the connecting seat and closes the valve core, and the valve core is provided with a vertically penetrating valve core hole, and the valve core is provided with an internal vent hole connected to the liquid storage bottle; the upper end of the pipette is equipped with a valve core hole; the valve core is driven to rotate at a fixed angle in the connecting seat. When the valve core rotates, the valve core hole is connected to the suction hole and the internal vent hole is connected to the external vent hole, and the air pressure siphon in the mixing port sucks the cleaning liquid in the liquid storage bottle into the mixing port through the pipette, the valve core hole, the suction hole, and the liquid suction chamber in sequence. When the valve core rotates, the valve core hole is staggered to the suction hole and the internal vent hole is staggered to the external vent hole, and the air pressure siphon in the mixing port cannot suck the cleaning liquid in the liquid storage bottle.

[0007] The connecting seat is provided with a rotating drive ring on the outside, and a connecting shaft is provided inside the drive ring. The connecting shaft passes through the limiting slot hole on the side of the connecting seat and is connected to the valve core. The drive ring rotates at a fixed angle around the axis of the connecting seat, and drives the valve core to rotate synchronously at a fixed angle around the axis of the connecting seat through the connecting shaft.

[0008] The limiting slot is an arc-shaped hole radially arranged on the outer surface of the connecting seat. The connecting shaft is driven by the driving ring to slide back and forth in the limiting slot, thereby forming a synchronous fixed-angle rotation limit of the driving ring and the valve core.

[0009] The outer surface of the driving ring is provided with an arrow mark, and the outer surface of the connecting seat is correspondingly provided with a letter mark indicating the corresponding arrow mark.

[0010] The water guide pipe is composed of a front section pipe and a rear section pipe, the front section pipe is provided with a front channel running through along the axis, the rear section pipe is provided with a rear channel running through along the axis, the front end of the front channel is provided with a front bell mouth connected to the foam nozzle, the rear end of the front channel is provided with a rear bell mouth, the front end of the rear section pipe is fitted and inserted into the rear bell mouth of the front channel, the mixing liquid port is provided at the rear end of the rear channel, an annular air intake gap is formed between the rear section pipe and the mixing liquid pipe, and the air intake is connected to the liquid suction cavity through the air intake gap.

[0011] The mixing tube is provided with a pressurizing channel running through along the axis. The front end of the pressurizing channel is connected to the liquid suction cavity and is on the same axis as the mixing port. The rear end of the pressurizing channel is provided with a trumpet-shaped pressurizing port.

[0012] The front end of the foam nozzle is provided with a V-shaped spray hole located in the center and a trumpet-shaped spray port surrounding the V-shaped spray hole.

[0013] The adjustable installation of the foam nozzle at the front end of the mixing liquid tube means that the foam nozzle is rotated at a fixed angle around the axis of the mixing liquid tube and is mounted on the front end of the mixing liquid tube. The fixed-angle rotation structure includes a radially surrounding arc groove on the outer circumferential surface of the front end of the mixing liquid tube, and a corresponding limit screw is provided on the foam nozzle that extends into the arc groove. The foam nozzle rotates relative to the front end of the mixing liquid tube and drives the limit screw to slide back and forth in the arc groove, thereby forming a fixed-angle rotation limit of the foam nozzle.

[0014] The rear end of the mixing pipe is provided with a connecting pipe and a union nut movably sleeved on the outside of the connecting pipe. The rear end of the mixing pipe is sealed and inserted into the water outlet end of the water gun through the connecting pipe, and then detachably threadedly connected to the water gun by the union nut.

[0015] Compared with the prior art, the present invention mainly provides an adjustably mounted foam nozzle at the front end of the mixing pipe, a sealed water guide pipe is provided in the mixing pipe, a trumpet-shaped mixing port is provided at the rear end of the water guide pipe, a liquid suction cavity is formed between the rear end of the water guide pipe and the mixing pipe, an air inlet is provided on the mixing pipe, and the air inlet, the liquid suction cavity and the mixing port are connected in sequence; at the same time, a liquid suction pipe is provided in the liquid storage bottle, the lower end of the liquid suction pipe extends into the cleaning liquid stored in the liquid storage bottle, and the upper end of the liquid suction pipe is connected to the liquid suction cavity; in this way, when the water outlet end of the water gun supplies water to the mixing device and water enters the mixing port, an air pressure siphon is formed, and the cleaning liquid in the liquid storage bottle and the outside air are sucked into the mixing port through the air pressure siphon through the liquid suction pipe, so that the air, water and cleaning liquid are mixed together at the mixing port and can be transported through the water guide pipe. Obviously, since the incoming water no longer directly enters the liquid storage bottle to be diluted and mixed with the cleaning liquid before being sprayed out for use, the user only needs to check the cleaning liquid capacity in the liquid storage bottle to grasp the usage and mixing concentration of the cleaning liquid at any time; at the same time, a valve core that rotates at a fixed angle is provided above the liquid storage bottle to control the mixing or interruption of the cleaning liquid, so that when a mixing device is installed at the water outlet of the water gun, it can also be flexibly switched between spraying and watering of landscaping and flushing of dirty items; in addition, the foam nozzle is adjustably installed at the front end of the mixing pipe, so when the foam nozzle has only one spray hole, it only needs to adjust the foam nozzle to drive the spray hole to various angles, thereby realizing the adjustment of the spraying direction and the change of water shape. It is simple to use and relatively convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional structural diagram of the present utility model.

[0017] Figure 2 for Figure 1 Enlarged view of point A.

[0018] Figure 3 for Figure 1 Stereoscopic image.

[0019] Figure 4 for Figure 3 Exploded diagram of .

[0020] Figure 5 This is a three-dimensional exploded view of the connection seat.

[0021] Figure 6 Schematic diagram of the structure of the mixing tube.

[0022] Figure 7 It is a structural diagram of the valve core.

[0023] Figure 8 This is a cross-sectional view of the front section of the tube.

[0024] Figure 9 This is a cross-sectional view of the rear section of the pipe.

[0025] Figure 10 It is a structural schematic diagram of the foam nozzle in the parallel spraying state.

[0026] Figure 11 It is a structural diagram of the foam nozzle in a vertical spraying state.

[0027] Figure 12 This is a schematic diagram of the water inlet path, air inlet path and liquid inlet path installed on a water gun of the utility model.

[0028] Figure 13 for Figure 12 Appearance drawing. DETAILED DESCRIPTION

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 13 As shown, 1. Mixing pipe, 11. Boosting channel, 12. Boosting port, 13. Connecting seat, 131. Letter mark, 132. External vent, 133. Neck, 134. Limiting slot, 14. Arc groove, 2. Connecting pipe, 21. Union nut, 3. Foam nozzle, 31. V-shaped spray hole, 32. Trumpet-shaped nozzle, 33. Limiting screw, 34. Bump, 4. Liquid storage bottle, 41. Suction tube, 5. Water guide pipe, 51. Front section pipe, 511. Front Channel, 512. Front bell mouth, 513. Rear bell mouth, 52. Rear section tube, 521. Rear channel, 522. Conical end, 6. Valve core, 61. Cylindrical tube, 611. Valve core hole, 612. Side hole, 62. Disc, 621. Internal vent hole, 7. Drive ring, 71. Arrow mark, 72. Connecting shaft, 8. Decorative cover, 81. Ventilation slot, 91. Liquid mixing port, 92. Liquid suction chamber, 93. Air inlet, 94. Air inlet gap, 95. Liquid suction hole.

[0031] A liquid mixing device for cleaning a water gun, such as Figure 12 、 Figure 13 As shown, it can be installed at the outlet of a water gun and mixes air, water, and cleaning liquid to spray out the mixture in a foamy state for optimal use. Of course, the water gun is only one of the water supply components configured with the liquid mixing device in this embodiment. The liquid mixing device can also be installed at the outlet of other water supply components while still maintaining its advantages. Similar water supply components include water supply pipes, water supply connectors, etc.

[0032] The liquid mixing device comprises a liquid mixing tube 1 and a liquid storage bottle 4; wherein the liquid mixing tube 1 is a horizontal hollow straight tube, the rear end of the liquid mixing tube, i.e. Figure 1The right end of the view shown is detachably mounted on the water outlet of the water gun, and the specific structure is as follows: the rear end of the mixing tube 1 is provided with a connecting tube 2 and a movable sleeve on the outside of the connecting tube 21, the rear end of the mixing tube 1 is first sealed and inserted into the water outlet of the water gun through the connecting tube 2, and then the nut 21 is detachably threaded on the water gun. At this time, the mixing device can form a connection with the water outlet of the water gun through the mixing tube 1, and vice versa, the mixing device can be removed and connected to the water gun.

[0033] The front end of the mixing liquid tube 1 is provided with an adjustably installed foam nozzle 3, which is actually a foam nozzle that is rotated at a fixed angle around the axis of the mixing liquid tube 1 and is mounted on the front end of the mixing liquid tube. The specific structure is: a radially surrounding arc groove 14 is provided on the outer circumferential surface of the front end of the mixing liquid tube 1, and a limit screw 33 is correspondingly provided on the foam nozzle 3. When the foam nozzle 3 is mounted on the front end of the mixing liquid tube 1 and the limit screw 33 is extended into the arc groove 14, when the foam nozzle 3 rotates relative to the front end of the mixing liquid tube 1, the limit screw 33 will be driven to slide back and forth in the arc groove 14, thereby forming a fixed-angle rotation limit for the foam nozzle 3 and preventing the foam nozzle 3 from falling off from the front end of the mixing liquid tube 1.

[0034] At the same time, the front end of the foam nozzle 3 is provided with a V-shaped spray hole 31 located in the center and a trumpet-shaped nozzle 32 surrounding the V-shaped spray hole. In this way, even if the foam nozzle 3 has only one spray hole, the V-shaped spray hole 31 can be driven to various positions by simply adjusting the foam nozzle to rotate at a certain angle relative to the front end of the mixing tube, thereby realizing the adjustment of the spraying direction and the change of the water shape. It is simple to use and relatively convenient to operate.

[0035] In this embodiment, the foam nozzle 3 is rotated at a fixed angle of 90 degrees relative to the front end of the mixing pipe 1, so that the foam nozzle can form a foam nozzle as shown in FIG. Figure 10 The parallel spraying state shown and Figure 11 The vertical spraying state shown in the figure realizes various cleaning methods in multiple scenarios.

[0036] The outer circumferential surface of the foam nozzle 3 is provided with a plurality of protrusions 34, which not only increase the friction force during the rotation operation of the foam nozzle 3, but also indicate which spraying state of the V-shaped spray hole 31 corresponds to when the foam nozzle rotates to the current position.

[0037] The mixing pipe 1 is provided with a water pipe 5 sealed by an O-ring, and the water pipe is composed of a front pipe 51 and a rear pipe 52; the front pipe 51 is provided with a front channel 511 extending along the axis, and the rear pipe 52 is provided with a rear channel 521 extending along the axis; the front end of the front channel 511 is provided with a front bell mouth 512 connected to the foam nozzle 3, so as to Figure 1Taking the example shown, the front end of the front section pipe 51 needs to extend out of the front end of the mixing liquid pipe 1. When the foam nozzle 3 is rotated at a certain angle and fitted onto the front end of the mixing liquid pipe 1, the front bell mouth 512 is connected with the V-shaped spray hole 31 of the foam nozzle 3 to form water outlet. An O-ring is also provided on the outer circumferential surface of the front end of the front section pipe 51 for contacting the inner circumferential surface of the foam nozzle 3 to achieve dynamic sealing.

[0038] The rear end of the front channel 511 is provided with a rear bell mouth 513, and the front end of the rear section tube 52 is fitted into the rear bell mouth 513 of the front channel 511 through the tapered end 522. The rear end of the rear channel 521 is provided with a trumpet-shaped liquid mixing port 91, and a liquid suction cavity 92 is formed between the rear end of the rear section tube 52 and the liquid mixing tube 1. An annular air intake gap 94 is formed between the outer circumferential surface of the rear section tube 52 and the inner circumferential surface of the liquid mixing tube 1. The liquid mixing tube 1 is provided with an air inlet 93 connected to the outside world. The air inlet is connected to the liquid suction cavity 92 through the air intake gap. Therefore, the air inlet 93, the liquid suction cavity 92 and the liquid mixing port 91 are connected in sequence. At the same time, the air intake gap 94 is used to block the water in the liquid mixing tube 1 and prevent it from flowing out directly from the air inlet 93.

[0039] The air inlet 93 is arranged in the groove at the top of the mixing tube 1 and is enclosed by a decorative cover 8 covering the groove. The decorative cover is provided with multiple arc-shaped air-permeable slots 81, which does not affect the air intake and can also play a protective and aesthetic role.

[0040] The bottom of the mixing tube 1 is provided with a connecting seat 13 of a connected structure. The connecting seat is a round cover-shaped internal threaded seat, and the axis of the connecting seat 13 is perpendicular to the axis of the mixing tube 1; a suction hole 95 connected to the suction cavity 92 is provided between the mixing tube 1 and the connecting seat 13, and an external vent hole 132 connected to the outside is also provided on the connecting seat 13.

[0041] The connecting seat 13 is provided with a valve core 6 that rotates at a fixed angle around the axis of the connecting seat, and a double-channel O-ring is provided on the outer circumference of the valve core, which contacts the connecting seat 13 to achieve dynamic sealing; the liquid storage bottle 4 is detachably mounted on the connecting seat 13 by screwing and enclosing the valve core 6 inside; the valve core 6 is composed of a cylindrical tube 61 and a disc 62 coaxially connected to the bottom of the cylindrical tube, a vertically through-going valve core hole 611 is provided in the cylindrical tube 61, and an internal vent hole 621 communicating with the liquid storage bottle 4 is provided on the disc 62.

[0042] The liquid storage bottle 4 is a transparent cylindrical bottle. Of course, the bottle body shape can also be designed into any other shape, and the transparent material allows the user to directly check the cleaning liquid capacity in the liquid storage bottle; the liquid storage bottle 4 is provided with a pipette 41, the lower end of the pipette extends into the cleaning liquid stored in the liquid storage bottle 4, and the upper end of the pipette 41 is inserted into the valve core hole 611.

[0043] Therefore, the valve core 6 is driven to rotate at a fixed angle in the connecting seat 13. When the valve core 6 rotates, the valve core hole 611 is connected to the liquid suction hole 95, that is, the upper end of the liquid suction tube 41 is directly connected to the liquid suction cavity 92, and the internal air vent 621 is also connected to the external air vent 132. At this time, the air pressure siphon formed by the water entering the mixing port 91 will suck the cleaning liquid in the liquid storage bottle 4 into the mixing port 91 through the liquid suction tube 41, the valve core hole 611, the liquid suction hole 95, and the liquid suction cavity 92 in sequence, and simultaneously suck the outside air into the mixing port 91 through the air inlet 93, so that the air, water and cleaning liquid are mixed together in the mixing port 91, and then can be transported to the foam nozzle 3 through the water guide pipe 5 to spray foam. This working state is mainly suitable for washing dirty items; moreover, an O-ring needs to be provided in the port of the valve core hole 611 to play a sealing role when the valve core hole 611 is connected to the liquid suction hole 95.

[0044] Therefore, the water inlet of the above-mentioned liquid mixing device no longer directly enters the liquid storage bottle 4 to be diluted and mixed with the cleaning liquid before being sprayed out for use. Therefore, the user only needs to check the cleaning liquid capacity in the liquid storage bottle 4 to know the usage amount and mixing concentration of the cleaning liquid at any time.

[0045] When the valve core 6 rotates, the valve core hole 611 is driven to stagger away from the suction hole 95, that is, the upper end of the suction tube 41 blocks the suction cavity 92, and at the same time the internal vent hole 621 is also staggered away from the external vent hole 132. At this time, the air pressure siphon formed by the water entering the mixing port 91 cannot suck in the cleaning liquid in the liquid storage bottle 4 for mixing, and the incoming water is directly transported to the foam nozzle 3 through the water pipe 5 for spraying. This working state is mainly suitable for spraying and watering of landscaping.

[0046] Obviously, by using a valve core that rotates at a fixed angle above the liquid storage bottle 4 to control the mixing or interruption of the cleaning liquid, it is possible to flexibly switch between spraying and watering landscaping and flushing of dirty items when a mixing device is installed at the water outlet of the water gun.

[0047] The valve core 6 is driven to rotate at a fixed angle in the connecting seat 13. The drive ring 7 is rotatably mounted outside the connecting seat 13. Usually, a neck 133 with a smaller outer diameter is provided between the connecting seat 13 and the mixing tube 1. After the drive ring 7 is rotatably mounted on the neck 133, the outer diameter of the drive ring can be nearly the same as the outer diameter of the connecting seat 13, thereby ensuring that the drive ring 7 does not affect the aesthetic appearance after it is installed in place.

[0048] The driving ring 7 can be a circular ring formed by two semicircular rings fastened together and fixed to each other. A connecting shaft 72 is provided in the driving ring 7, and the connecting shaft passes through the side of the connecting seat 13, that is, the limiting groove 134 on the side of the neck 133 is inserted into the side hole 612 of the valve core 6 to form a fixation. Therefore, when the driving ring 7 rotates around the axis of the connecting seat 13 at a fixed angle, the valve core 6 can be driven by the connecting shaft 72 to rotate synchronously around the axis of the connecting seat at a fixed angle.

[0049] The limiting slot 134 is an arc-shaped hole radially arranged on the outer surface of the neck 133. The connecting shaft 72 is driven by the driving ring 7 to slide back and forth in the limiting slot 134, thereby forming a synchronous fixed-angle rotation limit of the driving ring 7 and the valve core 6.

[0050] The outer surface of the driving ring 7 is provided with an arrow mark 71, and the outer surface of the connecting seat 13 is provided with a letter mark 131 corresponding to the arrow mark, such as a letter mark indicating foam and a letter mark indicating closed, so as to indicate the working condition of the liquid mixing device corresponding to the rotation position of the driving ring 7.

[0051] In addition, a pressurizing channel 11 is provided in the mixing tube 1 along the axis. The front end of the pressurizing channel is connected to the liquid suction cavity 92 and is on the same axis as the mixing port 91. The rear end of the pressurizing channel 11 is provided with a trumpet-shaped pressurizing port 12.

[0052] The utility model provides a plurality of trumpet-shaped structures at the pipe ports for passing water, such as the boosting channel 11, the water pipe 5, and the foam nozzle 3. The purpose is to form a high-low pressure chamber for the water in the mixing pipe 1 and to increase the siphon pressure at the mixing port 91 so as to easily inhale the cleaning liquid.

[0053] The above description is only a specific embodiment of the present invention. Those skilled in the art should understand that any structural design equivalent to this embodiment should be included in the protection scope of the present invention.

Claims

1. A liquid mixing device for cleaning a water gun, comprising a liquid mixing tube (1) and a liquid storage bottle (4), wherein the rear end of the liquid mixing tube is detachably mounted on the water outlet end of the water gun, and the liquid storage bottle (4) is detachably mounted on the liquid mixing tube (1), characterized in that The front end of the mixing liquid pipe (1) is provided with an adjustable foam nozzle (3), a sealed water pipe (5) is provided in the mixing liquid pipe (1), a trumpet-shaped mixing liquid port (91) is provided at the rear end of the water pipe (5), a liquid suction cavity (92) is formed between the rear end of the water pipe (5) and the mixing liquid pipe (1), an air inlet (93) is provided on the mixing liquid pipe (1), and the air inlet, the liquid suction cavity (92) and the mixing liquid port (91) are connected in sequence; a liquid suction pipe (41) is provided in the liquid storage bottle (4), and the lower end of the liquid suction pipe extends into the liquid stored in the liquid storage bottle (4) The cleaning liquid, the upper end of the liquid suction pipe (41) is connected to the liquid suction chamber (92) or blocks the liquid suction chamber (92); the upper end of the liquid suction pipe (41) is connected to the liquid suction chamber (92), water enters the mixing port (91) to form an air pressure siphon, and the air pressure siphon sucks the cleaning liquid in the liquid storage bottle (4) and the outside air through the air inlet (93) into the mixing port (91) through the liquid suction pipe (41), and the air, water and cleaning liquid are mixed together in the mixing port (91), and then transported to the foam nozzle (3) through the water guide pipe (5) to spray foam.

2. A liquid mixing device for cleaning water gun according to claim 1, characterized in that The bottom of the mixing liquid tube (1) is provided with a connecting seat (13), a liquid suction hole (95) communicating with the liquid suction cavity (92) is provided between the mixing liquid tube and the connecting seat, and an external vent hole (132) communicating with the outside is provided on the connecting seat (13); a valve core (6) that rotates at a fixed angle around the axis of the connecting seat is provided in the connecting seat (13); the liquid storage bottle (4) is detachably mounted on the connecting seat (13) and the valve core (6) is enclosed therein, a vertically penetrating valve core hole (611) is provided in the valve core, and an internal vent hole (621) communicating with the liquid storage bottle (4) is provided on the valve core; the upper end of the liquid suction tube (41) is inserted into the valve core hole (611); the valve The core (6) is driven to rotate at a fixed angle in the connecting seat (13). When the valve core (6) rotates, the valve core hole (611) is connected to the liquid suction hole (95) and the internal vent hole (621) is connected to the external vent hole (132). The air pressure siphon in the mixing liquid port (91) sucks the cleaning liquid in the liquid storage bottle (4) into the mixing liquid port (91) through the liquid suction tube (41), the valve core hole (611), the liquid suction hole (95), and the liquid suction cavity (92). When the valve core (6) rotates, the valve core hole (611) is staggered away from the liquid suction hole (95) and the internal vent hole (621) is staggered away from the external vent hole (132), the air pressure siphon in the mixing liquid port (91) cannot suck the cleaning liquid in the liquid storage bottle (4).

3. A liquid mixing device for cleaning a water gun according to claim 2, characterized in that The connecting seat (13) is provided with a rotatably mounted driving ring (7) on the outside, and a connecting shaft (72) is provided inside the driving ring. The connecting shaft passes through a limiting slot (134) on the side of the connecting seat (13) and is connected to the valve core (6). The driving ring (7) rotates at a fixed angle around the axis of the connecting seat (13), and drives the valve core (6) to rotate synchronously at a fixed angle around the axis of the connecting seat via the connecting shaft (72).

4. A liquid mixing device for cleaning a water gun according to claim 3, characterized in that The limiting slot (134) is an arc-shaped hole radially arranged on the outer surface of the connecting seat (13). The connecting shaft (72) is driven by the driving ring (7) to slide back and forth in the limiting slot (134), thereby forming a synchronous fixed-angle rotation limit of the driving ring (7) and the valve core (6).

5. A liquid mixing device for cleaning water gun according to claim 3, characterized in that The outer surface of the driving ring (7) is provided with an arrow mark (71), and the outer surface of the connecting seat (13) is correspondingly provided with a letter mark (131) indicating a corresponding arrow mark.

6. A liquid mixing device for cleaning a water gun according to claim 1, characterized in that The water guide pipe (5) is composed of a front section pipe (51) and a rear section pipe (52), wherein a front channel (511) extending along the axis is provided in the front section pipe, and a rear channel (521) extending along the axis is provided in the rear section pipe (52), wherein the front end of the front channel (511) is provided with a front bell mouth (512) connected to the foam nozzle (3), and the rear end of the front channel (511) is provided with a rear bell mouth (513), and the front end of the rear section pipe (52) is fitted into the rear bell mouth (513) of the front channel (511), and the liquid mixing port (91) is provided at the rear end of the rear channel (521). An annular air intake gap (94) is formed between the rear section pipe (52) and the liquid mixing pipe (1), and the air intake port (93) is connected to the liquid suction chamber (92) via the air intake gap (94).

7. A liquid mixing device for cleaning a water gun according to claim 1, characterized in that The mixing liquid tube (1) is provided with a boosting channel (11) extending along the axis. The front end of the boosting channel is connected to the liquid suction chamber (92) and is located on the same axis as the mixing liquid port (91). The rear end of the boosting channel (11) is provided with a trumpet-shaped boosting port (12).

8. A liquid mixing device for cleaning water gun according to claim 1, characterized in that The front end of the foam nozzle (3) is provided with a V-shaped spray hole (31) located in the center and a trumpet-shaped nozzle (32) surrounding the V-shaped spray hole.

9. A liquid mixing device for cleaning a water gun according to claim 1, characterized in that The adjustable installation of the foam nozzle (3) at the front end of the mixing liquid pipe (1) means that the foam nozzle (3) is mounted on the front end of the mixing liquid pipe at a fixed angle around the axis of the mixing liquid pipe (1). The fixed angle rotation set includes a radially surrounding arc groove (14) provided on the outer circumferential surface of the front end of the mixing liquid pipe (1), and a corresponding limit screw (33) is provided on the foam nozzle (3) and extends into the arc groove. The foam nozzle (3) rotates relative to the front end of the mixing liquid pipe (1) and drives the limit screw (33) to slide back and forth in the arc groove (14), thereby forming a fixed angle rotation limit of the foam nozzle (3).

10. A liquid mixing device for cleaning a water gun according to claim 1, characterized in that The rear end of the mixing pipe (1) is provided with a connecting pipe (2) and a union nut (21) movably sleeved on the outside of the connecting pipe. The rear end of the mixing pipe (1) is sealed and inserted into the water outlet end of the water gun through the connecting pipe (2), and is then detachably threadedly connected to the water gun by the union nut (21).

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