CN219442106U - Watering can - Google Patents

Abstract

The utility model provides a watering can, comprising: a liquid storage container; a straw extending from the interior of the reservoir to the exterior; a connector matched with the suction pipe, wherein a first venturi tube is arranged in the connector, a first passage and a second passage are arranged in the connector, the suction pipe is communicated with the first passage, one end of the first passage is introduced into a water source, and the first passage is communicated with the second passage through the first venturi tube; a low pressure nozzle mechanism connected with the connector, wherein the low pressure nozzle mechanism comprises a second venturi tube, a third passage communicated with the other end of the first passage and a fourth passage with one end communicated with the third passage are arranged in the low pressure nozzle mechanism, the other end of the fourth passage is communicated with the outside, and the third passage is communicated with the fourth passage through the second venturi tube; can form high-quality foam under low pressure, and promote cleaning effect.

Description

Watering can

Technical Field

The utility model relates to the technical field of monitoring of car washes, in particular to a spray can.

Background

The foam watering can is a common high-efficiency automobile cleaning tool, and can spray cleaning liquid into foam to the surface of the automobile body, so that a more thorough and effective cleaning effect is achieved.

The foam watering cans commonly used at present mainly comprise two types, namely a pneumatic foam watering can used on an air compressor and a high-pressure foam watering can used on a high-pressure cleaning machine. The pneumatic foam watering can has the advantages of rich foam, but inconvenient use. Since foam sprayers are typically standard fittings for high pressure (greater than 60 bar) washers, such sprayers have difficulty producing high quality foam in the low pressure area.

How to form high quality foam at low pressure is a technical problem that is urgently needed to be solved at present.

Disclosure of Invention

The utility model solves the problem of providing a watering can, which can form high-quality foam under low pressure and improve the cleaning effect.

In order to solve the above problems, the present utility model provides a watering can comprising: a liquid storage container; a straw extending from the interior of the reservoir to the exterior; a connector matched with the suction pipe, wherein a first venturi tube is arranged in the connector, a first passage and a second passage are arranged in the connector, the suction pipe is communicated with the first passage, one end of the first passage is introduced into a water source, and the first passage is communicated with the second passage through the first venturi tube; the low-pressure nozzle mechanism is connected with the connector and comprises a second venturi tube, a third passage communicated with the other end of the first passage and a fourth passage with one end communicated with the third passage are arranged in the low-pressure nozzle mechanism, the other end of the fourth passage is communicated with the outside, and the third passage is communicated with the fourth passage through the second venturi tube.

Optionally, the connector includes: the rotary interface is connected with the water source.

Optionally, the outside of rotary interface has the protective sheath that extends and runs through the trompil of protective sheath, the trompil symmetry distributes in rotary interface both sides.

Optionally, the low pressure nozzle mechanism further includes a nozzle sleeve connected with the connector, a nozzle is disposed at an end of the nozzle sleeve, the second venturi tube is axially fixed in the nozzle sleeve, and the second venturi tube is axially connected with the first venturi tube.

Optionally, the nozzle sleeve is fixedly connected or detachably connected with the connector.

Optionally, the second venturi tube is provided with through holes penetrating through the wall of the second venturi tube, and the through holes are distributed on the end wall of the second venturi tube near one side of the first venturi tube.

Optionally, the width of the through hole is 2.5mm, and the length is 8-10 mm.

Optionally, the nozzle includes with the connecting plate that the nozzle cover is connected, towards the nozzle cover outside and bulge in the arcwall face of connecting plate surface, have the hydrojet mouth between the arcwall face, the hydrojet mouth is the platykurtic.

Optionally, the first venturi tube is provided with a limit groove, the bottom of the limit groove is provided with a liquid inlet, and after the low-pressure nozzle mechanism is connected with the connector, the liquid inlet is aligned with the second passage.

Optionally, the connector includes: the first groove and the second groove are respectively provided with a sealing ring for being respectively in sealing connection with the nozzle sleeve and the suction pipe.

Optionally, the connector further includes: and the pressure balance structure is used for communicating the first passage and the third passage and keeping the air pressure in the liquid storage container to be the same as the atmospheric pressure.

Optionally, the connector further includes: and the convex structure is connected with the suction pipe and is used for sucking the cleaning liquid in the liquid storage container into the second passage.

Optionally, the connector further includes: the container interface surrounds the protruding structure, and the container interface is clamped with the liquid storage container.

Optionally, a slot is arranged at the end part of the suction pipe connected with the convex structure

Compared with the prior art, the technical scheme of the utility model has the following advantages:

in the technical scheme of the utility model, a suction pipe extends from the inside of the liquid storage container to the outside; a connector matched with the suction pipe, wherein a first venturi tube is arranged in the connector, a first passage and a second passage are arranged in the connector, the suction pipe is communicated with the first passage, one end of the first passage is introduced into a water source, and the first passage is communicated with the second passage through the first venturi tube; a low pressure nozzle mechanism connected with the connector, wherein the low pressure nozzle mechanism comprises a second venturi tube, a third passage communicated with the other end of the first passage and a fourth passage with one end communicated with the third passage are arranged in the low pressure nozzle mechanism, the other end of the fourth passage is communicated with the outside, and the third passage is communicated with the fourth passage through the second venturi tube; during operation, the water spray gun enters the connector, flows through the first passage, flows into the first venturi tube after accumulating pressure, generates negative pressure in the first venturi tube based on the Venturi effect, and the cleaning solution stored in the liquid storage container is sucked into the second passage through the suction tube. The mixture of water and cleaning solution is sprayed out from the second passage and enters the third passage, negative pressure is generated when the mixed fluid flows through the second venturi tube, air is sucked through the fourth passage, the air is mixed with the water and the cleaning solution in the third passage after passing through the fourth passage, then the mixture is sprayed out, and finally foam mixed with the water, the air and the cleaning solution is sprayed out from the front end of the low-pressure nozzle mechanism to form a fan-shaped foam jet, so that the generation of the foam can be realized under low source pressure without too large pressure, and the application range is wider.

Further, through holes penetrating through the wall of the second venturi tube are formed in the second venturi tube, the through holes are distributed on the end wall of the second venturi tube close to one side of the first venturi tube, the width of each through hole is 2.5mm, and the length of each through hole is 8-10 mm, the slender through holes can reduce leakage of negative pressure, air can be effectively utilized, accordingly more air is allowed to participate in foam generation, and foam generation quality is improved.

Further, the nozzle includes with the connecting plate that the nozzle cover is connected, towards the nozzle cover outside and bulge in the arcwall face on connecting plate surface, have the hydrojet mouth between the arcwall face, the hydrojet mouth is the platykurtic, this kind is in the front end that the nozzle is located the nozzle cover, and the hydrojet mouth is platykurtic (duckbilled type nozzle), and when its generation fan-shaped efflux produced, can not destroy the foam bubble, can generate stable foam efflux.

Further, the connector further includes: and the pressure balance structure is used for communicating the first passage and the third passage, so that the air pressure in the liquid storage container is the same as the atmospheric pressure, and the effect of refluxing redundant cleaning liquid is achieved.

Drawings

FIG. 1 is a schematic view of a watering can according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a watering can according to one embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a watering can according to an embodiment of the utility model;

FIG. 4 is a cross-sectional view of a low pressure nozzle mechanism according to one embodiment of the present utility model;

FIG. 5 is a schematic view of a second venturi according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a connector according to an embodiment of the utility model;

FIG. 7 is a cross-sectional view of a connector according to an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of a first venturi in an embodiment of the present utility model;

FIG. 9 is a schematic view of a nozzle according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a straw according to an embodiment of the present utility model;

fig. 11 is a cross-sectional view of A-A of fig. 10.

Detailed Description

At present, the spray can is required to form foam at a pressure of more than 60bar, and the foam forming quality still needs to be improved, so that the spray can needs to be improved.

On the basis, in the watering can provided by the utility model, the suction pipe extends from the inside to the outside of the liquid storage container; the connector is matched with the suction pipe, a first venturi tube is arranged in the connector, a first passage and a second passage are arranged in the connector, the suction pipe is communicated with the first passage, one end of the first passage is introduced into a water source, and the first passage is communicated with the second passage through the first venturi tube; the low-pressure nozzle mechanism is connected with the connector and comprises a second venturi tube, a third passage communicated with the other end of the first passage and a fourth passage with one end communicated with the third passage are arranged in the low-pressure nozzle mechanism, the other end of the fourth passage is communicated with the outside, and the third passage is communicated with the fourth passage through the second venturi tube; during operation, the water spray gun enters the connector, flows through the first passage, then flows into the first venturi tube after accumulating pressure, generates negative pressure in the first venturi tube based on the Venturi effect, and the cleaning liquid stored in the liquid storage container is sucked into the second passage through the suction tube. The mixture of water and cleaning liquid is sprayed from the second passage and enters the third passage, negative pressure is generated when the mixed fluid flows through the second venturi tube, air is sucked through the fourth passage, the air is mixed with the water and the cleaning liquid in the third passage after passing through the fourth passage, then the mixture is sprayed, and finally foam mixed with the water, the air and the cleaning liquid is sprayed from the front end of the low-pressure nozzle mechanism to form a fan-shaped foam jet flow, so that the generation of the foam can be realized under low source pressure without too great pressure, and the application range is wider.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

FIG. 1 is a schematic view of a watering can according to an embodiment of the present utility model; FIG. 2 is an exploded view of a watering can according to one embodiment of the present utility model; FIG. 3 is a cross-sectional view of a watering can according to an embodiment of the utility model; FIG. 4 is a cross-sectional view of a low pressure nozzle mechanism according to one embodiment of the present utility model; FIG. 5 is a schematic view of a second venturi according to an embodiment of the present utility model; FIG. 6 is a schematic diagram of a connector according to an embodiment of the utility model; FIG. 7 is a cross-sectional view of a connector according to an embodiment of the present utility model; FIG. 8 is a cross-sectional view of a first venturi tube according to an embodiment of the present utility model, and FIG. 9 is a schematic view of a nozzle according to an embodiment of the present utility model; FIG. 10 is a schematic view of a straw according to an embodiment of the present utility model; fig. 11 is a cross-sectional view of A-A of fig. 10.

Referring first to fig. 1 to 3, the watering can comprises a reservoir 6, a straw 5, a connector 4 and a low pressure nozzle mechanism.

The suction pipe 5 extends from the inside to the outside of the liquid storage container 6;

the connector 4 is matched with the suction pipe 5, the connector 4 is internally provided with a first Venturi tube 3, the connector 4 is internally provided with a first passage and a second passage which is communicated with the suction pipe 5, one end of the first passage is introduced into a water source, and the first passage is communicated with the second passage through the first Venturi tube 3;

the low-pressure nozzle mechanism is connected with the connector 4 and comprises a second Venturi tube 2, a third passage communicated with the other end of the first passage and a fourth passage with one end communicated with the third passage are arranged in the low-pressure nozzle mechanism, the other end of the fourth passage is communicated with the outside, and the third passage is communicated with the fourth passage through the second Venturi tube 2.

In this embodiment, during operation, the water spray gun enters the connector 4, flows through the first passage, then flows into the first venturi tube 3 after accumulating, negative pressure is generated in the first venturi tube 3 based on the venturi effect, the cleaning liquid stored in the liquid storage container 6 is sucked into the second passage through the suction tube 5, the mixture of water and cleaning liquid is sprayed out of the second passage and enters the third passage, negative pressure is generated when the mixed fluid flows through the second venturi tube 2, air is sucked through the fourth passage, the air is mixed with the water and cleaning liquid in the third passage and then sprayed out, and finally foam mixed with the water, the air and the cleaning liquid is sprayed out of the front end of the low-pressure nozzle mechanism to form a fan-shaped foam jet.

In the present embodiment, the first venturi tube 3 is a copper venturi tube.

In the present embodiment, the second venturi tube 2 is an intake venturi tube.

In this embodiment, please refer to fig. 4 and fig. 5 in combination, the low pressure nozzle mechanism further includes a nozzle sleeve 1 connected to the connector 4, a nozzle 11 is disposed at an end of the nozzle sleeve 1, the second venturi tube 2 is axially fixed in the nozzle sleeve 1, and the second venturi tube 2 is axially connected to the first venturi tube 3.

In the embodiment, the nozzle sleeve 1 and the second venturi tube 2 are assembled by assembling an O-shaped ring 7 on an O-shaped ring groove 21 reserved on the air inlet venturi tube 2, the O-shaped ring 7 and the O-shaped ring groove 21 are plugged into the nozzle sleeve 1, and the O-shaped ring 7 is in contact with an inner hole 12 of the nozzle sleeve 1 to play a sealing role.

In this embodiment, both the nozzle housing 1 and the second venturi tube 2 constitute a single suction assembly.

In the present embodiment, the nozzle housing 1 is fixedly connected or detachably connected to the connector 4.

In this embodiment, referring to fig. 9, the nozzle 11 includes a connecting plate 11a connected to the nozzle sleeve 1, an arc surface 11b facing the outside of the nozzle sleeve 1 and protruding from the surface of the connecting plate, and a liquid spraying opening 11c between the arc surfaces 11b, where the liquid spraying opening 11c is flat.

In this embodiment, referring to fig. 5, the second venturi tube 2 has a through hole 22 penetrating the wall of the second venturi tube 2, and the through hole 22 is distributed on the end wall of the second venturi tube 2 near the side of the first venturi tube 3.

In this embodiment, the nozzle 11 is positioned at the front end of the nozzle sleeve, and the liquid spraying opening is flat (duckbill nozzle), so that the stable foam jet can be generated without breaking foam bubbles when the fan jet is generated.

In this embodiment, the width of the through hole 22 is 2.5mm and the length is 8 to 10mm.

In this embodiment, the elongated through hole 22 is specifically designed for a low-pressure washer, so that leakage of negative pressure can be reduced, air can be utilized more effectively, and more air is allowed to participate in foam generation, and quality of foam generation is improved.

In this embodiment, referring to fig. 4 and 8 in combination, the first venturi tube 3 has a limiting groove 31, the bottom of the limiting groove 31 has a liquid inlet 32, and after the low pressure nozzle mechanism is connected to the connector 4, the liquid inlet 32 is aligned with the second passage.

In this embodiment, please refer to fig. 2 and 7 in combination, the first venturi tube 3 is provided with O-rings 9 and 10, and the nozzle sleeve 1, the second venturi tube 2 and the first venturi tube 3 are integrally assembled inside the connector 4.

In the present embodiment, please refer to fig. 6 and 7 in combination, the connector 4 includes: the first groove 41 and the second groove 42 have sealing rings 8 and 10, respectively, on the first groove 41 and the second groove 42 for forming a sealing connection with the nozzle housing 1 and the suction pipe 5, respectively.

In this embodiment, please continue to refer to fig. 6 and 7, the connector 4 further includes: the pressure balancing structure 46 is used for communicating the first passage and the third passage, so that the air pressure in the liquid storage container 6 is consistent with the atmospheric pressure, and the function of refluxing the redundant cleaning liquid is achieved.

In this embodiment, please continue to refer to fig. 6, 7, 10 and 11, the connector 4 further includes: the protruding structure 45, the protruding structure 45 is connected with the suction pipe 5, is used for sucking the cleaning solution in the liquid storage container 6 into the second passageway.

In this embodiment, please continue to refer to fig. 6 and 7, the connector 4 further includes: the container interface 48, the container interface 48 surrounds the protruding structure 45, and the container interface 48 and the liquid storage container 6 joint, it can cooperate buckle 61 on the liquid storage container 6, protruding structure 45 and buckle 61 are the rotatory buckle connection of 90, and its advantage is the unnecessary stroke of avoiding the rotation, is fit for the kettle of non-solid of revolution.

In this embodiment, referring to fig. 10 to 11, the end of the suction tube 5 connected to the protruding structure 45 is provided with a slot 51, and the slot 51 is convenient for sucking the cleaning agent, so as to avoid waste caused by liquid residue.

Wherein the suction tube 5 in fig. 10 and 11 is in a straightened state.

In this embodiment, please continue to refer to fig. 6 and 7, the connector 4 further includes: a rotary interface 47, the rotary interface 47 being connected to a water source.

In the present embodiment, the outer side of the rotary interface 47 has an extended protecting sleeve 47a and an opening 47b penetrating the protecting sleeve 47a, and the openings 47b are symmetrically distributed at both sides of the rotary interface 47.

In this embodiment, the protective sheath 47a is retractable.

In the present embodiment, the number of the openings 47b is two; in other embodiments, the number of the openings 47b may be plural, and may be set according to actual requirements.

In this embodiment, the outer side of the rotary interface 47 is provided with a telescopic sheath 48 for ensuring the connection strength between the spray can and the spray gun, avoiding the spray gun from shaking, and two holes 47b are provided to structurally ensure the mold-stripping feasibility of the rotary interface 47, and the holes 47b can also be used as check holes for ensuring the connection reliability.

In this embodiment, the connector 4 further comprises a liquid suction hole 43 for sucking the cleaning liquid in the liquid storage container 6.

In this embodiment, the connector 4 further comprises an inner step surface 44.

In this embodiment, the connector 4 is assembled with the first venturi tube 3 in such a way that the nozzle sleeve 1, the second venturi tube 2 and the first venturi tube 3 are integrally assembled in the connector 4, and are limited by the step surface 33 and the inner step surface 44, and under the correct limitation, the limiting groove 31 on the first venturi tube 3 is aligned with the liquid suction hole 43, and the liquid inlet hole 32 is formed at the bottom of the limiting groove 31 for sucking the cleaning agent.

In this embodiment, referring to fig. 3, an external water source enters the first venturi tube 3 assembled inside the connector 4 through the rotary interface 47, negative pressure is generated based on venturi effect, cleaning liquid is sucked from the liquid storage container 6 through the suction tube 5, the cleaning liquid and the venturi tube are primarily mixed into the second venturi tube 2, negative pressure is generated based on venturi effect again, air is sucked from the hole 13 on the nozzle sleeve 1, mixed into water flow through the through hole 22, foam is formed, and finally the foam is sprayed out from the nozzle 11, wherein (1) represents water flow, (2) represents air flow, and (3) represents cleaning liquid flow.

Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.

Claims (14)

1. A watering can, comprising:

a liquid storage container;

a straw extending from the interior of the reservoir to the exterior;

a connector matched with the suction pipe, wherein a first venturi tube is arranged in the connector, a first passage and a second passage are arranged in the connector, the suction pipe is communicated with the first passage, one end of the first passage is introduced into a water source, and the first passage is communicated with the second passage through the first venturi tube;

the low-pressure nozzle mechanism is connected with the connector and comprises a second venturi tube, a third passage communicated with the other end of the first passage and a fourth passage with one end communicated with the third passage are arranged in the low-pressure nozzle mechanism, the other end of the fourth passage is communicated with the outside, and the third passage is communicated with the fourth passage through the second venturi tube.

2. The watering can of claim 1 wherein said connector comprises: the rotary interface is connected with the water source.

3. The watering can of claim 2 wherein the outside of the swivel joint has an extending protective sheath and openings extending through the protective sheath, the openings being symmetrically disposed on either side of the swivel joint.

4. The watering can of claim 1 wherein the low pressure nozzle mechanism further comprises a nozzle sleeve connected to the connector, the nozzle sleeve having a nozzle at an end thereof, the second venturi tube being axially secured within the nozzle sleeve, the second venturi tube being axially connected to the first venturi tube.

5. The spray can of claim 4 wherein the nozzle boot is fixedly or removably attached to the connector.

6. The watering can of claim 4 wherein said second venturi has through holes extending through the wall of said second venturi, said through holes being distributed in the end wall of said second venturi adjacent the side of said first venturi.

7. The watering can of claim 6 wherein the through hole has a width of 2.5mm and a length of 8-10 mm.

8. The spray can of claim 4 wherein the nozzle includes a web connected to the nozzle housing, an arcuate surface facing outwardly of the nozzle housing and projecting from a surface of the web, a spray orifice being provided between the arcuate surfaces, the spray orifice being flattened.

9. The watering can of claim 4 wherein the first venturi tube has a stop groove therein, wherein the bottom of the stop groove has a liquid inlet, and wherein the liquid inlet is aligned with the second passageway after the low pressure nozzle mechanism is connected to the connector.

10. The watering can of claim 4 wherein said connector further comprises: the first groove and the second groove are respectively provided with a sealing ring for being respectively in sealing connection with the nozzle sleeve and the suction pipe.

11. The watering can of claim 1 wherein said connector comprises: and the pressure balance structure is used for communicating the first passage and the third passage and keeping the air pressure in the liquid storage container to be the same as the atmospheric pressure.

12. The watering can of claim 1 wherein said connector further comprises: and the convex structure is connected with the suction pipe and is used for sucking the cleaning liquid in the liquid storage container into the second passage.

13. The watering can of claim 12 wherein said connector further comprises: the container interface surrounds the protruding structure, and the container interface is clamped with the liquid storage container.

14. The watering can of claim 12 wherein the end of the straw to which the raised structure is attached is provided with a slot.