Water gun

Abstract

The utility model provides a water gun which comprises a gun body, a spray head connected with the gun body and a flow channel communicated with the gun body and the spray head, and the flow channel comprises a main flow channel arranged in the gun body; the multiple branch flow channels are all arranged in the spray head and do not communicate with one another; and the spray head can move relative to the gun body, so that the main runner is communicated with different branch runners respectively. The water gun provided by the utility model has various different water shapes so as to be suitable for different use scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water gun technical field especially relates to a water gun. BACKGROUND

[0002] Water gun is an important cleaning, irrigation tool, is widely used in family, industry, gardens and municipal fields etc. Water gun removes dirt and impurities through water pressure water flow, irrigates different types of plants etc. Therefore, its design needs to consider water pressure control, water spraying area, nozzle design, material selection and many other aspects. Water gun can not only be used for daily cleaning, but also can be used for cleaning of industrial equipment, large public facilities and garden spraying etc.

[0003] The nozzle design in water gun determines the form and intensity of water flow. There are many types of nozzles (such as fan-shaped, needle-shaped, columnar and rotating nozzle) on the market, which are suitable for different cleaning and irrigation needs. Due to the limitations of municipal water supply pressure, the design of household water gun is difficult to balance the range and water pressure. Fan-shaped water type, water spray is dispersed, the cleaning range is larger, but the diffusion of water flow leads to the decline of water pressure. If stubborn stains are dealt with, the cleaning ability is insufficient. Needle-shaped and columnar water type can maintain the maximum water pressure, but due to the small contact area of cleaning water flow and the working surface, the efficiency is low when cleaning large working surface.

[0004] In order to solve the above problems, some water guns with rotating nozzle driven by water flow have appeared on the market, which can better solve the contradiction between water pressure and range. However, the driving force of this kind of water gun is water pressure, which has the problem of water pressure loss. At the same time, because the movable parts are introduced, the structure is relatively complex, and the environmental adaptability is poor. If the water source is impure, there is a risk of rotation component jamming. INVENTION CONTENTS

[0005] The utility model provides a water gun with multiple different water shapes to adapt to different use scenarios.

[0006] The utility model provides a water gun, including gun body, with the spray head of gun body link and the flow channel of intercommunication gun body and spray head, flow channel includes:

[0007] Main flow channel, set up in gun body;

[0008] Multiple branch flow channels, multiple branch flow channels are all set up in spray head and are not interconnected;

[0009] The spray head can act relative to the gun body, so that the main flow channel is respectively interconnected with different branch flow channels.

[0010] Further, the branch flow channels include a first fluid channel, a second fluid channel and a third fluid channel, which correspond to three different water shapes.

[0011] Further, the branch flow channels include a first fluid channel, a second fluid channel and a third fluid channel, which correspond to three different water shapes.

[0012] Further, the oscillation part includes a main cavity and a first flow regulation partition and a second flow regulation partition arranged in the main cavity, an oscillation channel is formed between the first flow regulation partition and the second flow regulation partition, a first feedback channel is formed between the first flow regulation partition and the main cavity, a second feedback channel is formed between the second flow regulation partition and the main cavity, the first feedback channel and the second feedback channel are respectively located on opposite sides of the oscillation channel; the inlet channel, the oscillation channel, the first feedback channel, the second feedback channel and the outlet channel are in communication to form the first fluid channel.

[0013] Further, the oscillation channel has a shape of being wide in the middle and narrow at both ends, and the width of the oscillation channel near the inlet channel is greater than the width of the oscillation channel near the outlet channel.

[0014] Further, the shape of the inlet channel gradually narrows from the end away from the oscillation channel to the end near the oscillation channel, the inlet channel forms a throat near the oscillation channel, and the width of the throat is less than or equal to the minimum width of the oscillation channel.

[0015] Further, the shape of the outlet channel gradually expands from the end near the oscillation channel to the end away from the oscillation channel; the outlet channel forms a spray hole near the oscillation channel, and the width of the spray hole is less than the width of the throat.

[0016] Further, the branch flow channels include a second fluid channel and a third fluid channel, and the second fluid channel and the third fluid channel are both cylindrical, and the diameter of the second fluid channel is less than the diameter of the third fluid channel.

[0017] Further, the gun body is provided with an elastic positioning member, one end of the gun body forms an annular insertion slot, and one end of the elastic positioning member protrudes from the inner wall of the annular insertion slot; the spray head is provided with an annular connector corresponding to the annular insertion slot, the inner wall of the annular connector is provided with a plurality of positioning grooves, and when the elastic positioning member is clamped in one of the positioning grooves, one of the branch flow channels is in communication with the main flow channel.

[0018] Further, the gun body comprises a holding part and a connecting part, the extending direction of the holding part is arranged at an obtuse angle with the extending direction of the connecting part, a flow control switch is arranged at the intersection position of the holding part and the connecting part, and the spray head is arranged at one end of the connecting part away from the holding part.

[0019] The water gun has multiple different water shapes by arranging multiple branch flow channels in the spray head and the spray head moving relative to the gun body, so as to adapt to different use scenarios.

[0020] To make the advantages of the utility model clearer, the utility model embodiments will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective structural schematic view of the water gun of the preferred embodiment of the utility model.

[0022] Figure 2 is a sectional view of the water gun of the preferred embodiment of the utility model.

[0023] Figure 3 is an exploded structural schematic view of the water gun of the preferred embodiment of the utility model.

[0024] Figure 4 is a sectional view of the spray head of the water gun of the preferred embodiment of the utility model.

[0025] Figures 5A to 5C is the internal flow self-excited deflection process of the first fluid channel in the spray head of the water gun of the preferred embodiment of the utility model.

[0026] Figure 6 is the water flow effect actually generated from the first fluid channel in the spray head of the water gun of the preferred embodiment of the utility model.

[0027] Figure 7 is a schematic view of the spray head of the water gun of the preferred embodiment of the utility model.

[0028] Figure 8 is a schematic view of the gun body of the water gun of the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0029] To further explain the technical means and effects taken by the utility model to achieve the predetermined purpose, the specific embodiments, structures, features and effects of the water gun according to the utility model are described in detail as follows by combining the drawings and embodiments.

[0030] The foregoing and other technical contents, features and effects of the present application will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. Through the description of the specific embodiments, the technical means and effects adopted by the present application to achieve the predetermined purposes can be more deeply and specifically understood. However, the accompanying drawings are provided for reference and illustration only, and are not intended to limit the present application.

[0031] Please refer to Figures 1 to 3 The embodiment provides a water gun, which is mainly used for regular cleaning such as cleaning courtyards, vehicles, bicycles and household equipment, and garden spraying.

[0032] The water gun comprises a gun body 1, a spray head 2 connected with the gun body 1 and a flow channel connecting the gun body 1 and the spray head 2.

[0033] In the embodiment, the gun body 1 comprises a holding part 130 and a connecting part 140, and the extension direction of the holding part 130 is arranged at an obtuse angle with the extension direction of the connecting part 140. The spray head 2 is arranged at one end of the connecting part 140 away from the holding part 130, and the length extension direction of the spray head 2 is consistent with the length extension direction of the connecting part 140. The extension direction of the holding part 130, the length extension direction of the connecting part 140 and the length extension direction of the spray head 2 are approximately consistent with the flow direction of the fluid in the gun body 1. The flow channel comprises a main flow channel 10 arranged in the gun body 1 and a plurality of branch flow channels arranged in the spray head 2 and not connected with each other. The spray head 2 can move relative to the gun body 1, so that the main flow channel 10 is connected with different branch flow channels, and the water gun has a plurality of different water shapes to adapt to different use scenarios.

[0034] As Figure 4 The branch flow channel comprises a first fluid passage 20, which is formed in a jet oscillator 200 arranged in the spray head 2. The jet oscillator 200 is further provided with a shell 201. The jet oscillator 200 comprises an inlet part 210, an oscillation part 220 and an outlet part 230. The inlet part 210 is provided with an inlet passage 211, and the outlet part 230 is provided with an outlet passage 231. The oscillation part 220 comprises a main cavity 221, a first flow regulation partition plate 222 and a second flow regulation partition plate 223 arranged in the main cavity 221. The main cavity 221 is approximately square, and the inlet part 210 and the outlet part 230 are arranged at two ends of the main cavity 221.

[0035] The first rectifier baffle 222 and the second rectifier baffle 223 are mirror-symmetrically arranged and side-by-side inside the main cavity 221. The length extension direction of the first rectifier baffle 222 and the second rectifier baffle 223 is consistent with the length extension direction of the nozzle 2. The cross-section of the first rectifier baffle 222 and the second rectifier baffle 223 is smaller in the middle and larger at both ends, with the end near the inlet 210 being larger than the end near the outlet 230. The inner sides of the first rectifier baffle 222 and the second rectifier baffle 223 that are close to each other are curved, while the outer sides of the first rectifier baffle 222 and the second rectifier baffle 223 that are close to each other are straight.

[0036] An oscillation channel 224 is formed between the first rectifier baffle 222 and the second rectifier baffle 223. A first feedback channel 225 is formed between the first rectifier baffle 222 and the main cavity 221. A second feedback channel 226 is formed between the second rectifier baffle 223 and the main cavity 221. The first feedback channel 225 and the second feedback channel 226 are located on opposite sides of the oscillation channel 224. The inlet channel 211, the oscillation channel 224, the first feedback channel 225, the second feedback channel 226, and the outlet channel 231 are interconnected to form a first fluid channel 20.

[0037] In this embodiment, the oscillation channel 224 has a shape that is wide in the middle and narrow at both ends, and the width of the oscillation channel 224 near the inlet channel 211 is greater than the width of the oscillation channel 224 near the outlet channel 231.

[0038] Furthermore, the shape of the inlet channel 211 gradually narrows from the end away from the oscillation channel 224 to the end closer to the oscillation channel 224, and a throat 211a is formed at the end of the inlet channel 211 closer to the oscillation channel 224. The width of the throat 211a is less than or equal to the minimum width of the oscillation channel 224.

[0039] Furthermore, the shape of the outlet channel 231 gradually widens from the end near the oscillation channel 224 to the end away from the oscillation channel 224; a nozzle 231a is formed at the end of the outlet channel 231 near the oscillation channel 224. The width of the nozzle 231a is smaller than the width of the throat 211a.

[0040] The first fluid channel 20 can be used to form a swept oscillating jet, and the internal flow self-excited deflection process of the jet oscillator 200 is as follows: Figures 5A to 5C As shown:

[0041] Please refer to Figure 5A, the oscillation part 220 has two feedback channels (a first feedback channel 225 and a second feedback channel 226) inside, and fluid enters from the inlet channel 211 in an upward direction. Due to the Coanda effect, the main flow flows close to the wall surface of the second rectifying baffle 223. Because the width of the oscillation channel 224 is much larger than the width of the inlet throat 211a, a separation bubble is formed on the left side of the oscillation channel 224. The main flow is ejected to the left from the outlet channel 231, and due to the flow limiting effect of the pre-designed jet hole 231a, part of the fluid flows back to the upper part of the throat 211a through the second feedback channel 226, filling and gradually forming a separation bubble on the right side of the oscillation channel 224.

[0042] Please refer to Figure 5B With the passage of time, the backflow causes the separation bubble on the right side of the oscillation channel 224 to grow continuously, thereby gradually pushing the main flow to the first rectifying baffle 222 and the second feedback channel 226, and the process also changes the direction of the main flow ejected from the outlet channel 231.

[0043] Please refer to Figure 5C The main flow has been completely pushed to the first rectifying baffle 222 and the second feedback channel 226, the main flow flows close to the wall surface of the first rectifying baffle 222, the main flow is ejected to the right from the outlet channel 231, and due to the flow limiting effect of the jet hole 231a, part of the fluid flows back to the upper part of the throat 211a through the first feedback channel 225, filling and gradually forming a separation bubble on the left side of the oscillation channel 224. The above process is repeated, and the effect of a sweeping oscillating jet flow periodically swinging left and right at the jet hole 231a (as shown in Figure 6 ).

[0044] The water gun of the utility model completely relies on the fluid characteristics inside itself, and under the stable inlet pressure, a self-excited, self-sustaining sweeping oscillating jet flow can be generated at the outlet, does not contain any movable mechanical parts, and has stable and reliable structure. Without reducing the water pressure, the water gun of the utility model can increase the cleaning area of the water flow, and thus improve the cleaning efficiency of the water gun.

[0045] In the embodiment, the branch channel further includes a second fluid channel 30 and a third fluid channel 40. The second fluid channel 30 and the third fluid channel 40 are arranged in the shell 201, and the structure for forming the second fluid channel 30 and the third fluid channel 40 can be integrally formed with the fluidic oscillator 200. In the embodiment, the second fluid channel 30 and the third fluid channel 40 are both cylindrical, and the diameter of the second fluid channel 30 is smaller than that of the third fluid channel 40, but the utility model is not limited thereto.

[0046] The second fluid channel 30 is used to form a needle type water flow, and the water flow is columnar, but the water outlet hole is small, so that a high water pressure is maintained, and is used for cleaning stubborn small area stains.

[0047] The third fluid channel 40 is used to generate a large flow water type, and the water flow is also columnar, but the opening is larger, and is not used for stubborn stain cleaning, but pursues the maximum flow.

[0048] Further, the spray head 2 is rotatably arranged on the gun body 1, and rotating the spray head 2 can make the first fluid channel 20, the second fluid channel 30 and the third fluid channel 40 respectively communicate with the main flow channel 10, so that different water shapes are switched by rotating the spray head 2.

[0049] Please refer to Figure 2 and Figure 7 , the gun body 1 is provided with an elastic positioning piece 110, and the gun body 1 is formed with an annular slot 120 at one end, and one end of the elastic positioning piece 110 protrudes from the inner wall of the annular slot 120. Figure 2 and Figure 8 , the spray head 2 is provided with an annular connector 240 corresponding to the annular slot 120, and the inner wall of the annular connector 240 is provided with a plurality of positioning grooves 241 (three in the embodiment), when the elastic positioning piece 110 is clamped in one of the positioning grooves 241, one of the first fluid channel 20, the second fluid channel 30 and the third fluid channel 40 communicates with the main flow channel 10.

[0050] The water gun further comprises a flow control switch 5 for controlling the flow size of the main flow channel 10.

[0051] The flow control switch 5 comprises a rotating handle 51 and a flow control valve 52 connected with the rotating handle 51. The flow control switch 5 is arranged at the intersection position of the holding part 130 and the connecting part 140.

[0052] In the description of the utility model, it needs to be explained that, unless there is explicit provision and limitation, the terms "installation", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0053] The above merely describes the embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with the embodiments, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the technical solution of the present application, and can make equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A water gun comprising a gun body, a nozzle connected to the gun body, and a flow channel communicating the gun body and the nozzle, characterized in that, The flow channel comprises: a main flow channel arranged in the gun body; a plurality of branch flow channels, each of which is arranged in the nozzle and is not in communication with each other; The nozzle can act relative to the gun body, so that the main flow channel is respectively in communication with different branch flow channels.

2. The water gun of claim 1, wherein, The branch flow channel comprises a first fluid passage, a second fluid passage and a third fluid passage, and the first fluid passage, the second fluid passage and the third fluid passage correspond to three different water shapes.

3. The water gun of claim 1, wherein, The plurality of branch flow channels comprises a first fluid passage formed in a fluidic oscillator; the fluidic oscillator comprises an inlet part, an oscillation part and an outlet part, the inlet part is provided with an inlet channel, the outlet part is provided with an outlet channel, and the inlet channel is in communication with the main flow channel.

4. The water gun of claim 3, wherein, The oscillation part comprises a main cavity and a first and a second flow regulating partition plate arranged in the main cavity, an oscillation channel is formed between the first and the second flow regulating partition plate, a first feedback channel is formed between the first flow regulating partition plate and the main cavity, a second feedback channel is formed between the second flow regulating partition plate and the main cavity, and the first and the second feedback channels are respectively located on opposite sides of the oscillation channel; the inlet channel, the oscillation channel, the first feedback channel, the second feedback channel and the outlet channel are in communication to form the first fluid passage.

5. The water gun of claim 4, wherein, The oscillation channel has a shape of being wide in the middle and narrow at both ends, and the width of the oscillation channel near the inlet channel is greater than the width of the oscillation channel near the outlet channel.

6. The water gun of claim 4, wherein, The shape of the inlet channel gradually narrows from the end away from the oscillation channel to the end close to the oscillation channel, and the inlet channel is formed with a throat near the oscillation channel, and the width of the throat is less than or equal to the minimum width of the oscillation channel.

7. The water gun of claim 6, wherein, The shape of the outlet channel gradually expands from the end close to the oscillation channel to the end away from the oscillation channel; the outlet channel is formed with a spray hole near the oscillation channel, and the width of the spray hole is less than the width of the throat.

8. The water gun of claim 1, wherein, The plurality of branch flow channels comprises a second fluid passage and a third fluid passage, and the second fluid passage and the third fluid passage are both cylindrical, and the diameter of the second fluid passage is less than the diameter of the third fluid passage.

9. The water gun of claim 1, wherein, The gun body is provided with an elastic positioning member, one end of the gun body is formed with an annular insertion slot, and one end of the elastic positioning member protrudes from the inner wall of the annular insertion slot; the nozzle is provided with an annular joint corresponding to the annular insertion slot, the inner wall of the annular joint is provided with a plurality of positioning grooves, and when the elastic positioning member is clamped in one of the positioning grooves, one of the plurality of branch flow channels is in communication with the main flow channel.

10. The water gun of claim 1, wherein, The gun body comprises a holding part and a connecting part, the extension direction of the holding part is arranged at an obtuse angle with the extension direction of the connecting part, a flow control switch is arranged at the intersection position of the holding part and the connecting part, and the nozzle is arranged at one end of the connecting part away from the holding part.

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