Steam cleaning gun

Abstract

The utility model relates to a steam cleaning gun, which comprises a gun handle main body provided with a first fluid inlet, a second fluid inlet and a fluid outlet; a first fluid channel is formed between the first fluid inlet and the fluid outlet, and a second fluid channel is formed between the second fluid inlet and the fluid outlet; the sides, close to the fluid outlet, of the first fluid channel and the second fluid channel are communicated and form a mixing channel; the first fluid channel and the mixing channel are connected through a pressurizing channel, so that water flow in the first fluid channel enters the mixing channel in a high-speed jet steam form, and cleaning liquid in the second fluid channel is sucked into the mixing channel to be mixed with the water flow and sprayed out from the fluid outlet; the gun handle main body is provided with a control piece for controlling the second valve assembly, and the control piece is used for switching the second valve assembly from an initial disconnection state to a connection state; a second one-way valve is arranged on the second valve assembly and used for stopping the fluid from being reversely conveyed to the fluid container.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure cleaning machine manufacturing, in particular to a steam cleaning gun. Background Art

[0002] Today, high-pressure water flushing is widely used in municipal sanitation and other fields. Because it uses high-pressure water jets to remove dirt, high-pressure cleaning is recognized worldwide as one of the most scientific, economical, and environmentally friendly cleaning methods.

[0003] The high-pressure water guns in the prior art usually connect the gun handle to an external high-pressure water pipe, and output the high-pressure water flow directly through the high-pressure water gun; to increase the cleaning effect, some high-pressure water guns will input detergent, mix the detergent and water flow to form a cleaning solution and spray it out.

[0004] However, this type of high-pressure cleaning gun still has certain defects: the water jet speed is only controlled by the water output from the high-pressure water pipe, and the jet efficiency is limited; since the cleaning liquid needs to be mixed, the cleaning liquid output channel and the water output channel need to be connected. When the water output is blocked, backflow is formed and flows back to the cleaning liquid output channel, mixing in the output channel and even in the cleaning liquid container, forming a large number of bubbles in the cleaning container, causing the air pressure in the container to increase and the purity of the cleaning liquid to decrease. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a steam cleaning gun.

[0006] The above-mentioned problem of the present invention is solved by the following technical solutions:

[0007] A steam cleaning gun includes a gun handle body having a first fluid inlet, a second fluid inlet, and a fluid outlet; the first fluid inlet is connected to an external high-pressure fluid pipe, and the second fluid inlet is connected to a fluid container;

[0008] A first fluid channel is formed between the first fluid inlet and the fluid outlet, and a second fluid channel is formed between the second fluid inlet and the fluid outlet; the first fluid channel and the second fluid channel are connected at a side close to the fluid outlet to form a mixing channel;

[0009] The first fluid channel and the mixing channel are connected by a pressurizing channel, so that the water in the first fluid channel enters the mixing channel in the form of high-speed jet-like steam, and the cleaning liquid in the second fluid channel is sucked into the mixing channel and mixed with the water flow and ejected from the fluid outlet;

[0010] a first valve assembly disposed in the first fluid channel, wherein the gun handle body is provided with a trigger for controlling the first valve assembly to switch the on / off state of the first fluid channel;

[0011] a second valve assembly disposed in the second fluid channel, wherein the gun handle body is provided with a control member for controlling the second valve assembly, the control member being provided with a torsion reset member and being in a holding position under the action of the torsion reset member;

[0012] In the holding position, the second valve assembly is in an open state;

[0013] Furthermore, the control member switches the second valve assembly to a communicating state under the action of an external force;

[0014] The second valve assembly is provided with a second one-way valve for preventing the fluid from being delivered in the reverse direction to the fluid container.

[0015] By adopting the above technical solution, a constricted boosting channel is set at the end of the first fluid channel, and the Venturi effect is used to generate negative pressure in the high-speed water flow, actively siphoning the cleaning liquid without the need for an additional power pump, making the mixing more uniform and the injection pressure stronger; and by setting a second one-way valve in the second valve assembly, the mixed liquid is blocked from flowing back to the second fluid channel.

[0016] The above technical solution is further configured as follows: the second valve assembly includes a second valve body having a second inlet and a second outlet; a second valve core is provided in the second valve body, and the second valve core moves in the second valve body under the drive of the control component to switch the state of the second valve assembly.

[0017] The above technical solution is further configured as follows: the second valve core is a rotating core, which is provided with a blocking surface and a water flow surface along the circumference; the control member is a knob limitedly installed on the rotating core;

[0018] The torsion return component is arranged between the control component and the gun handle body.

[0019] By adopting the above technical solution, the reset member is twisted to automatically return the knob to close the passage of the cleaning liquid, thereby avoiding waste or leakage caused by misoperation.

[0020] The above technical solution is further configured as follows: the fluid container has a container inlet and a container outlet, the container outlet is provided with a first one-way valve, and the first one-way valve and the second one-way valve have the same fluid delivery direction.

[0021] Through the above technical solution, a double one-way valve structure is set up to form a secondary barrier for the backflowing liquid, completely preventing the cleaning liquid from being contaminated or diluted, and avoiding liquid backflow.

[0022] The above technical solution is further configured as follows: the boost channel is provided at the output end of the first fluid channel and is constricted along the fluid delivery direction; the ratio of the inner diameter H of the output end to the inner diameter L of the input end is 1 / 4 <H / L<1 / 2。

[0023] The above technical solution is further configured as follows: the first valve assembly includes a first valve body having a first inlet and a first outlet, and the first valve body contains a first valve core that moves in a straight line. The first valve core moves away from the valve port under the action of the trigger to connect the first inlet and the first outlet.

[0024] The above technical solution is further configured as follows: the fluid channel in the first valve body is configured as a first input channel connected to the first inlet, and a first output channel connected to the first outlet; the first input channel and the first output channel are configured to form an angle;

[0025] The first valve core and the first output channel are coaxially arranged.

[0026] The above technical solution is further configured as follows: a stop shaft is provided on the first valve core, the stop shaft extends out of the first valve body, a shifting rod is provided outside the first valve body, and the shifting rod is used to shift the stop shaft;

[0027] The driving end of the trigger contacts the shift rod and drives the shift rod to move.

[0028] The above technical solution is further configured as follows: a first reset member is provided in the gun handle body to hold the trigger and drive the driving end away from the detent rod.

[0029] By adopting the above technical solution, it is ensured that the trigger is turned off as soon as it is released, avoiding the risk of continuous spraying.

[0030] The above technical solution is further configured as follows: the gun handle body is further provided with a locking member for locking the trigger.

[0031] By adopting the above technical solution, a locking piece is provided on the trigger to lock the trigger to prevent accidental triggering, which is particularly suitable for high-pressure operation scenarios and improves safety.

[0032] Compared with the existing technology, the beneficial effects of the present invention are: by setting a constricted boosting channel at the end of the first fluid channel, the Venturi effect is used to make the high-speed water flow generate negative pressure, actively siphoning the cleaning liquid without the need for an additional power pump, making the mixing more uniform and the injection pressure stronger; and a double one-way valve structure is set to form a secondary barrier to the reflux mixed liquid, blocking the mixed liquid from flowing back to the second fluid channel; it completely prevents the cleaning liquid from being contaminated or diluted, and achieves a breakthrough in efficient mixing, pollution prevention, low energy consumption and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0034] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0035] Figure 3 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0036] Figure 4 Schematic diagram of the exploded structure of the second valve assembly.

[0037] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0038] Figure 6 for Figure 3 Schematic diagram of the enlarged structure of part B in the middle.

[0039] Figure 7 Schematic diagram of the exploded structure of the first valve assembly and the trigger.

[0040] Figure 8 Schematic diagram of the cross-sectional structure of the first valve assembly.

[0041] Figure 9 Schematic diagram of the connection structure between the first valve assembly and the trigger.

[0042] The following are marked on the accompanying drawings: 100, gun handle body; 110, water mixing element; 111, first fluid channel; 112, second fluid channel; 113, pressurization channel; 114, mixing channel; 101, first fluid inlet; 102, second fluid inlet; 103, fluid outlet; 120, baffle; 200, fluid container; 201, container inlet; 202, container outlet; 210, first one-way valve; 220, plugging cover; 300, first valve assembly; 310, first valve body; 301, first inlet; 302, first outlet; 311, first input Channel; 312, first output channel; 320, first valve core; 321, blocking shaft; 322, sealing gasket; 330, shift rod; 331, rotating rod; 313, limiting groove; 400, second valve assembly; 401, second inlet; 402, second outlet; 410, second one-way valve; 420, second valve body; 430, second valve core; 403, second input channel; 404, second output channel; 431, plug; 440, torsional reset member; 500, trigger; 501, locking groove; 1, control member; 2, first reset member; 3, locking member. DETAILED DESCRIPTION

[0043] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0044] like Figure 1-9 As shown, this embodiment discloses a steam cleaning gun.

[0045] A steam cleaning gun includes a gun handle body 100 having a first fluid inlet 101, a second fluid inlet 102, and a fluid outlet 103; the first fluid inlet 101 is connected to an external high-pressure fluid pipe, and the second fluid inlet 102 is connected to a fluid container 200;

[0046] A first fluid channel 111 is formed between the first fluid inlet 101 and the fluid outlet 103, and a second fluid channel 112 is formed between the second fluid inlet 102 and the fluid outlet 103. The first fluid channel 111 and the second fluid channel 112 are connected on the side close to the fluid outlet 103 to form a mixing channel 114.

[0047] The first fluid channel 111 and the mixing channel 114 are connected via a pressurizing channel 113, so that the water in the first fluid channel 111 enters the mixing channel 114 in the form of high-speed jet-like steam, and the cleaning liquid in the second fluid channel 112 is sucked into the mixing channel 114, mixed with the water, and ejected from the fluid outlet 103;

[0048] A first valve assembly 300 is provided in the first fluid channel 111. The gun handle body 100 is provided with a trigger 500 for controlling the first valve assembly 300 to switch the first fluid channel 111 between on and off states.

[0049] A second valve assembly 400 is provided in the second fluid channel 112. The gun handle body 100 is provided with a control member 1 for controlling the second valve assembly 400. The control member 1 is provided with a torsion return member 440 and is in a holding position under the action of the torsion return member 440.

[0050] In the holding position, the second valve assembly 400 is in an open state;

[0051] Furthermore, the control member 1 switches the second valve assembly 400 to a communication state under the action of an external force;

[0052] The second valve assembly 400 is provided with a second one-way valve 410 for preventing the fluid from being delivered in the reverse direction to the fluid container 200 .

[0053] The above is the basic solution of this embodiment.

[0054] Specific reference Figure 1 and Figure 2As shown, the gun handle body 100 has a gun structure, comprising a grip portion and a barrel portion. A first fluid inlet 101 is located at the lower end of the grip portion and is connected to a high-pressure fluid pipe. A fluid outlet 103 is located at the head of the barrel portion. Fluid input from the first fluid inlet 101 is output to the fluid outlet 103 to clean objects. Simultaneously, a second fluid inlet 102 is located at the rear of the barrel portion, connected to a fluid container 200. Cleaning fluid enters the second fluid channel 112 through the second fluid inlet 102 and enters the mixing channel 114 at the head of the second fluid channel 112, where it mixes with steam input from the first fluid channel 111 to form a mixed solution, which is then output from the fluid outlet 103 to achieve a cleaning effect.

[0055] To facilitate pipe connections within the gun handle body 100, in this embodiment, a Y-shaped mixing element 110 is provided within the gun handle body 100. The fluid outlet 103 is provided at the head of the mixing element 110. The other two branches of the mixing element 110 are connected to the first fluid inlet 101 and the second fluid inlet 102 via pipes, respectively. The fluid channel within the mixing element 110 is part of the first fluid channel 111 and the second fluid channel 112, and the channel connected to the fluid outlet 103 is the mixing channel 114. In addition, the pressurization channel 113 is also provided within the mixing element 110.

[0056] In this embodiment, the first fluid inlet 101 inputs water, and the second fluid inlet 102 inputs cleaning liquid.

[0057] The cleaning liquid is input in the following manner: when the water flow in the first fluid channel 111 passes through the pressurizing channel 113 and enters the mixing fluid channel, due to the action of the pressurizing channel 113, the water flow forms a high-speed jet of steam in the pressurizing channel 113 and enters the mixing channel 114, generating a vacuum negative pressure in the mixing channel 114 to produce a siphon effect, thereby sucking the cleaning liquid in the second fluid channel 112 located on the other side of the mixing channel 114 into the mixing channel 114 to form a mixed solution.

[0058] In this embodiment, a second valve assembly 400 is provided in the second fluid channel 112. The second valve assembly 400 controls the on-off of the second fluid channel 112. When the fluid outlet 103 is clogged and the mixed liquid or water flow encounters an obstruction during the output process, the fluid in the mixing channel 114 flows back into the unpowered second fluid channel 112. However, due to the stop of the second valve assembly 400, the backflowing fluid is blocked at the front of the second fluid channel 112 and does not enter the rear of the second fluid channel 112 or even the fluid container 200, thereby avoiding the mixing of the backflowing fluid and the cleaning liquid.

[0059] In addition, in order to ensure the stopping effect of the second valve assembly 400, in this embodiment, in the initial state, the second valve assembly 400 is in a disconnected state. During normal cleaning, the user only operates the trigger 500 to open the first valve assembly 300, so that the first fluid channel 111 is opened. At this time, the fluid outlet 103 only sprays pure water; when it is necessary to increase the cleaning function, the control part 1 is operated to open the second valve assembly 400, so that the second fluid channel 112 is opened. At this time, the cleaning liquid is sucked into the mixing channel 114 under the action of negative pressure, mixed with the water flow to form a mixed solution that is sprayed out.

[0060] After the external force on the control member 1 is removed, the control member 1 is reset, the second valve assembly 400 is automatically disconnected, the second fluid channel 112 is disconnected, and the cleaning liquid cannot be transported.

[0061] At the same time, in this state, even if the fluid outlet 103 is blocked and the water flow cannot be output, resulting in backflow, due to the disconnection of the second valve assembly 400, the water flow cannot smoothly pass through the second fluid channel 112, thereby achieving the blocking of the backflow fluid.

[0062] Since there is a gap in the second valve assembly 400, a very small amount of fluid can seep out of the gap. Therefore, in this embodiment, a second one-way valve 410 is provided at the inlet of the second valve assembly 400. The fluid can only be input into the second valve assembly 400 from the outside through the inlet and cannot be output in the reverse direction, thereby ensuring that the refluxed fluid does not enter the fluid container 200.

[0063] Specifically, in this embodiment, the second valve assembly 400 includes a second valve body 420 having a second inlet 401 and a second outlet 402; a second valve core 430 is provided in the second valve body 420, and the second valve core 430 moves in the second valve body 420 under the drive of the control component 1 to switch the state of the second valve assembly 400.

[0064] Preferably, in this embodiment, the second valve assembly 400 adopts a ball valve structure, and the second valve core 430 rotates in the second valve body 420 to open or block the passage between the second inlet 401 and the second outlet 402 .

[0065] Specific reference Figure 4 and Figure 5 As shown, a second input channel 403 and a second output channel 404 are provided in the second valve body 420, the second input channel 403 is connected to the second inlet 401, the second output channel 404 is connected to the second outlet 402, and the second valve core 430 moves between the second input channel 403 and the second output channel 404 to disconnect or connect the second input channel 403 and the second output channel 404.

[0066] Specifically, the second valve core 430 is a rotating core, which is provided with a blocking surface and a water flow surface along the circumference; the control member 1 is a knob limitedly installed on the rotating core;

[0067] The torsion restoration member 440 is disposed between the control member 1 and the gun handle body 100 .

[0068] Specific reference Figure 4 As shown, the rotating core is configured to be rod-shaped, and one end thereof extends to the outside of the second valve body 420. In this embodiment, the knob is movably provided on the gun handle body 100 and can be operated by the user. Therefore, the end of the rotating core extends to the outside of the gun handle body 100 and is connected to the knob; the other end of the rotating core is provided with two opposite sealing surfaces and two water-passing surfaces along the circumferential direction, and the rotating core is provided with a groove at the sealing surface portion, and a plug 431 is provided in the groove. The plug 431 blocks the two opposite openings of the second input channel 403 and the second output channel 404, thereby placing the second valve assembly 400 in a disconnected state.

[0069] In this embodiment, the usage of the second valve assembly 400 is consistent with that of the ball valve in the prior art, and will not be described in detail here.

[0070] Preferably, in this embodiment, the torsion return member 440 is a return torsion spring, which is torsionally abutted between the gun handle body 100 and the knob and is always in a loaded state, so that the knob controls the second valve assembly 400 to be in a disconnected state without being subjected to external force. When cleaning fluid is needed, the knob is twisted to open the fluid channel of the second valve assembly 400, and the cleaning fluid can be delivered; after releasing the knob, the knob automatically resets to disconnect the fluid channel of the second valve assembly 400.

[0071] At the same time, a gap is left between the groove and the plug 431. When the rotating core rotates to the open state, the two water-passing surfaces correspond to the two openings of the second input channel 403 and the second output channel 404 respectively. At this time, the cleaning liquid can flow through the gap, and the second valve assembly 400 is in the open state.

[0072] In this embodiment, the fluid container 200 has a container inlet 201 and a container outlet 202 . The container outlet 202 is provided with a first one-way valve 210 . The first one-way valve 210 and the second one-way valve 410 have the same fluid delivery direction.

[0073] Specific reference Figure 2 and Figure 3As shown, the container inlet 201 of the fluid container 200 is provided with an openable plug 220 for replenishing cleaning liquid into the fluid container 200. A second one-way valve 410 is provided at the container outlet 202, and the second one-way valve 410 is arranged inside the fluid container 200 to block the container outlet 202 unidirectionally. The cleaning liquid can only be output from the fluid container 200 through the second one-way valve 410 at the container outlet 202 and cannot be input reversely through the container outlet 202.

[0074] When the fluid container 200 is installed on the gun handle main body 100, the container outlet 202 is connected to the second inlet 401 of the second valve assembly 400, so that the first one-way valve 210 and the second one-way valve 410 form a secondary block to隔断 the reflux fluid.

[0075] Preferably, in this embodiment, the valve ports of the first one-way valve 210 and the second one-way valve 410 are both set as constricted structures along the fluid transportation direction.

[0076] In this embodiment, the pressure increasing channel 113 is arranged at the output end of the first fluid channel 111 and is constricted along the fluid transportation direction; the ratio of the inner diameter H of the output end to the inner diameter L of the input end is 1 / 4 < H / L < 1 / 2.

[0077] Specifically refer to Figure 6 As shown, the input end of the pressure increasing channel 113 is connected to the output end of the first fluid channel 111, and the output end of the pressure increasing channel 113 is connected to the input end of the mixing channel 114.

[0078] The water flow enters the pressure increasing channel 113 from the first fluid channel 111. Due to the decrease in the inner diameter of the pressure increasing channel 113, the water pressure increases. When reaching the output end of the pressure increasing channel 113, the inner diameter of the mixing channel 114 suddenly increases. Then, the water flow is sprayed into the mixing channel 114 in the form of high-pressure fluid.

[0079] Preferably, in this embodiment, setting the range of the ratio of the inner diameter H of the input end to the inner diameter L of the output end as 1 / 4 < H / L < 1 / 2 can obtain the optimal spray state.

[0080] The specific implementation manner of the first valve assembly 300 in this embodiment is: the first valve assembly 300 includes a first valve body 310 having a first inlet 301 and a first outlet 302. A first valve core 320 that moves linearly is arranged inside the first valve body 310. The first valve core 320 moves away from the valve port under the action of the trigger 500 to connect the first inlet 301 and the first outlet 302.

[0081] Specifically refer to Figure 7 and Figure 8As shown, the fluid channel in the first valve body 310 is configured as a first input channel 311 connected to the first inlet 301, and a first output channel 312 connected to the first outlet 302; the first input channel 311 and the first output channel 312 are configured at an angle;

[0082] The first valve core 320 and the first output channel 312 are coaxially arranged. The inlet of the first output channel 312 is a valve port. When the first valve core 320 is tightly attached to the valve port, the valve port is blocked, thereby disconnecting the first output channel 312 and the first input channel 311.

[0083] The first valve core 320 and the first output channel 312 are arranged on the same straight line. When the first valve core 320 is driven, a sealing gasket 322 is provided at the head of the first valve core 320 to seal the end of the first output channel 312. In the initial state, the sealing gasket 322 is tightly attached to the end of the first output channel 312, blocking the opening of the first output channel 312 and disconnecting the first fluid channel 111. During use, the trigger 500 is operated to move the first valve core 320 away from the first output channel 312, connecting the first output channel 312 with the first input channel 311. The first fluid channel 111 is opened and can convey water.

[0084] In this embodiment, the trigger 500 drives the first valve core 320 in the following manner: a stop shaft 321 is provided on the first valve core 320, and the stop shaft 321 extends outside the first valve body 310. A shift lever 330 is provided outside the first valve body 310, and the shift lever 330 is used to shift the stop shaft 321.

[0085] The driving end of the trigger 500 contacts the shift rod 330 and drives the shift rod 330 to move.

[0086] Specific reference Figure 9 As shown, the stop shaft 321 is arranged radially along the first valve core 320, and extends to the outside of the first valve core 320 through the limiting groove 313 on the first valve body 310. The shift rod 330 is arranged on the radial side of the stop shaft 321, and can move the stop shaft 321 toward the side away from the first outlet 302, thereby driving the first valve core 320 to move.

[0087] In this embodiment, the limiting groove 313 is arranged along the axial direction of the first valve body 310 .

[0088] The trigger 500 has an upper end serving as a driving end and a lower end serving as a hinged end, which is connected to the gun grip body 100. A user presses the upper end to push the driving end into the gun grip body 100. The driving end contacts the lower end of the lever 330, driving the lower end of the lever 330 and causing the lever 330 to move.

[0089] Preferably, in this embodiment, two shift rods 330 are provided and symmetrically arranged on both radial sides of the first valve body 310 , and the upper ends are rotatably connected to the first valve body 310 via a rotating rod 331 .

[0090] The driving end of the trigger 500 drives the lower end of the shifting rod 330 to rotate the shifting rod 330 around the rotating rod 331 . During the rotation, the blocking shaft 321 is driven to move linearly along the limiting slot 313 .

[0091] Preferably, in this embodiment, a first restoring member 2 is provided in the gun handle body 100 to hold the trigger 500 and drive the driving end away from the detent rod 330 .

[0092] The first return member 2 is a return spring disposed inside the gun handle body 100 and supporting the trigger 500 . A baffle 120 is formed inside the gun handle body 100 , and the return spring is supported between the baffle 120 and the trigger 500 .

[0093] In this embodiment, there is a locking structure for the trigger 500 , specifically, a locking member 3 for locking the trigger 500 is further provided on the gun handle body 100 .

[0094] Specific reference Figure 9 As shown, the driving end of the trigger 500 is provided with a locking groove 501, and a movable locking member 3 is provided in the gun handle body 100. The locking member 3 can extend into the gun handle body 100 and be stuck in the locking groove 501, thereby locking the trigger 500 so that the trigger 500 cannot be pressed into the inside of the gun handle body 100 under the action of external force.

[0095] The locking groove 501 is a groove provided at the driving end. The locking member 3 is a shift block. The shift block is shifted to move toward the driving end of the trigger 500 and is inserted into the locking groove 501 to lock the trigger 500.

[0096] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A steam cleaning gun, characterized by: The invention comprises a gun handle body (100) having a first fluid inlet (101), a second fluid inlet (102) and a fluid outlet (103); the first fluid inlet (101) is connected to an external high-pressure fluid pipe, and the second fluid inlet (102) is connected to a fluid container (200); A first fluid channel (111) is formed between the first fluid inlet (101) and the fluid outlet (103), and a second fluid channel (112) is formed between the second fluid inlet (102) and the fluid outlet (103); the first fluid channel (111) and the second fluid channel (112) are connected at a side close to the fluid outlet (103) to form a mixing channel (114); The first fluid channel (111) and the mixing channel (114) are connected via a pressurizing channel (113), so that the water flow in the first fluid channel (111) enters the mixing channel (114) in the form of high-speed jet-like steam, and the cleaning liquid in the second fluid channel (112) is sucked into the mixing channel (114) to be mixed with the water flow and ejected from the fluid outlet (103); A first valve assembly (300) is provided in the first fluid channel (111); a trigger (500) for controlling the first valve assembly (300) is provided on the gun handle body (100) to switch the on / off state of the first fluid channel (111); A second valve assembly (400) is provided in the second fluid channel (112); a control member (1) for controlling the second valve assembly (400) is provided on the gun handle body (100); the control member (1) is provided with a torsion reset member (440) and is in a holding position under the action of the torsion reset member (440); In the holding position, the second valve assembly (400) is in an open state; Furthermore, the control member (1) switches the second valve assembly (400) to a communication state under the action of an external force; The second valve assembly (400) is provided with a second one-way valve (410) for preventing the fluid from being delivered in the reverse direction to the fluid container (200).

2. The steam cleaning gun according to claim 1, characterized in that: The second valve assembly (400) includes a second valve body (420) having a second inlet (401) and a second outlet (402); a second valve core (430) is provided in the second valve body (420), and the second valve core (430) moves in the second valve body (420) under the drive of the control member (1) to switch the state of the second valve assembly (400).

3. The steam cleaning gun according to claim 2, characterized in that: The second valve core (430) is a rotating core, which is provided with a sealing surface and a water flow surface along the circumference; the control member (1) is a knob installed on the rotating core in a limited manner; The torsion return member (440) is arranged between the control member (1) and the gun handle body (100).

4. The steam cleaning gun according to claim 1, characterized in that: The fluid container (200) has a container inlet (201) and a container outlet (202), and the container outlet (202) is provided with a first one-way valve (210). The first one-way valve (210) and the second one-way valve (410) have the same fluid delivery direction.

5. The steam cleaning gun according to claim 1, characterized in that: The boost channel (113) is provided at the output end of the first fluid channel (111) and is in a constricted shape along the fluid delivery direction; the ratio of the inner diameter H of the output end to the inner diameter L of the input end is 1 / 4 <H / L<1 / 2。 6. The steam cleaning gun according to claim 1, characterized in that: The first valve assembly (300) comprises a first valve body (310) having a first inlet (301) and a first outlet (302). A first valve core (320) is provided in the first valve body (310) and moves in a straight line. The first valve core (320) moves away from the valve port under the action of a trigger (500) to connect the first inlet (301) and the first outlet (302).

7. The steam cleaning gun according to claim 6, characterized in that: The fluid channel in the first valve body (310) is configured as a first input channel (311) connected to the first inlet (301), and a first output channel (312) connected to the first outlet (302); the first input channel (311) and the first output channel (312) are configured to form an angle; The first valve core (320) and the first output channel (312) are coaxially arranged.

8. The steam cleaning gun according to claim 7, characterized in that: A blocking shaft (321) is provided on the first valve core (320), and the blocking shaft (321) extends outside the first valve body (310). A shifting rod (330) is provided outside the first valve body (310), and the shifting rod (330) is used to shift the blocking shaft (321); The driving end of the trigger (500) contacts the shifting rod (330) and drives the shifting rod (330) to move.

9. The steam cleaning gun according to claim 8, characterized in that: A first reset member (2) is provided in the gun handle body (100) to hold the trigger (500) and drive the driving end away from the shifting rod (330).

10. The steam cleaning gun according to claim 1, characterized in that: The gun handle body (100) is also provided with a locking member (3) for locking the trigger (500).

Images