Efficient water-saving foam sprinkling can for car washing

Abstract

The efficient water-saving foam sprinkling can comprises a can body, a can cover is arranged at the upper end of the can body, a pump pressure mechanism is arranged over the can cover, a can head is arranged at a liquid outlet of the pump pressure mechanism in a communicating mode, and an adjustable fan-shaped nozzle is arranged at the liquid outlet end of the can head in a communicating mode. The liquid mixing and water saving mechanism is matched with the pumping mechanism to realize uniform mixing of gas and liquid, so that the fineness and adhesion time of foam are remarkably improved, the foaming amount is remarkably increased, the half-life period of the foam is effectively prolonged, manual liquid mixing errors are avoided, the water saving rate is effectively improved, repeated spraying is greatly reduced through the adjustable fan-shaped nozzle, and the production efficiency is improved. The sustainable operation time after single liquid adding is prolonged, the comprehensive cleaning efficiency is improved, the water-saving effect is remarkable under the same cleaning effect, the car washing liquid consumption is reduced, rapid switching between the pre-washing cavity and the forward washing cavity is achieved through the flow control mechanism, simplicity and convenience are achieved, waste caused by liquid replacement when a single foam spraying can is operated is avoided, the foam spraying can does not need to be replaced, and the cost is reduced. And water resources are effectively saved.

Description

Technical Field

[0001] This invention relates to the field of foam sprayer technology, and more particularly to a high-efficiency water-saving foam sprayer for car washing. Background Technology

[0002] Foam sprayers for car washes are specially designed for spraying foam during car cleaning. By manually or with air pressure, car wash liquid and water are mixed to produce dense foam. The dense foam covers the car body, enhancing cleaning power and reducing friction damage to the paint.

[0003] Traditional household and self-service car wash foam sprayers generally suffer from the following problems: 1. The mixing ratio of water and car wash liquid relies on manual experience, resulting in uneven mixing and significant waste; 2. They consume a large amount of water, have poor water-saving effects, and low cleaning efficiency; 3. When switching between pre-wash and main wash foam, unused liquid needs to be poured out and rinsed clean before replacement, wasting time and water resources. Therefore, developing a car wash foam sprayer that produces uniform foam, automatically mixes liquid, and is water-saving and efficient is an urgent problem that technical personnel in this field need to solve. Summary of the Invention

[0004] In view of the shortcomings and defects in the existing technology, the present invention proposes a high-efficiency water-saving foam sprayer for car washing, which is used to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency water-saving foam sprayer for car washing includes a body, a lid at the top of the body, a pump mechanism directly above the lid, a nozzle connected to the outlet of the pump mechanism, an adjustable fan-shaped nozzle connected to the outlet of the nozzle, a mixing and water-saving mechanism inside the nozzle, a guide column connected between the lid and the inlet of the pump mechanism, a partition plate fixedly connected to the inner wall at the center of the body, the partition plate dividing the body into a pre-wash chamber and a main wash chamber, a flow control mechanism on the guide column, two suction tubes connected to the lower end of the guide column, the two suction tubes being inserted into the pre-wash chamber and the main wash chamber respectively, and two guide ports connected to the inner wall near the top of the body, the two guide ports being connected to the pre-wash chamber and the main wash chamber respectively.

[0006] Preferably, the mixing and water-saving mechanism includes a Venturi-type gas-liquid mixing chamber and a foam-stabilizing guide chamber disposed within the kettle head. The Venturi-type gas-liquid mixing chamber is composed of a contraction section, a throat section, and a diffusion section. The throat section is connected to the liquid outlet of the pump mechanism, and the diffusion section is connected to the foam-stabilizing guide chamber. The foam-stabilizing guide chamber has a multi-stage foaming net assembly on its annular inner wall near the diffusion section, and several symmetrically distributed spiral turbulence structures on its inner wall near the adjustable fan-shaped nozzle.

[0007] Preferably, the multi-stage foaming mesh assembly is composed of multiple layers of foaming mesh, the mesh density of the multiple layers of foaming mesh increases progressively along the flow direction of the foam stabilizing and guiding cavity, and the spacing between the multiple layers of foaming mesh is 5mm.

[0008] Preferably, the upper end of the center position of the kettle body is provided with a threaded interface, the lower end of the center position of the kettle lid is provided with an annular connector, the annular inner wall of the annular connector is provided with an external thread, the external thread is threadedly connected to the threaded interface, and a sealing ring is fixedly connected to the top surface of the kettle lid located inside the annular connector, and the threaded interface and the sealing ring are pressed together.

[0009] Preferably, the flow control mechanism includes two vertical flow guide holes disposed at the lower end of the liquid guide column, and an inverted Y-shaped liquid guide hole disposed at the upper end of the liquid guide column. Both vertical flow guide holes are connected to the inverted Y-shaped liquid guide hole. Both suction tubes pass through the sealing ring and are respectively connected to the two vertical flow guide holes. Two symmetrically distributed fixing blocks are fixedly connected to the annular sidewall of the liquid guide column. Both fixing blocks have circular cavities. Valve stems are movably inserted through the opposing inner walls of the two circular cavities. The two valve stems are respectively movably sealed through the two vertical flow guide holes. Sealing gaskets are fixedly embedded in the sidewalls of the two fixing blocks facing the liquid guide column. The valve stems are movably sealed through the sealing gaskets. Adjusting screws are rotatably inserted through the inner walls of the two circular cavities away from the valve stems. Threaded holes are disposed on the sidewalls of the two valve stems facing the adjusting screws. The two adjusting screws are respectively threadedly connected to the two threaded holes. Knobs are fixedly connected to the ends of the two adjusting screws located outside the circular cavities.

[0010] Preferably, both the sealing ring and the sealing gasket are made of oil-resistant asbestos rubber.

[0011] Preferably, each of the two liquid inlets has an annular threaded protrusion at the end away from the body of the vessel. A sealing cap is threaded onto each of the two annular threaded protrusions. A T-shaped block is fixedly connected to the side wall at the center of each of the two sealing caps. An annular ring is fitted onto each of the two T-shaped blocks. A binding rope is fixedly connected to each of the two annular rings. Both binding ropes are fixedly connected to the body of the vessel.

[0012] Preferably, the T-shaped block and the sealing cap are integrally formed, and the annular ring and the binding rope are both made of elastic rubber.

[0013] Compared with the prior art, the beneficial effects of this invention are as follows: By combining the liquid mixing and water-saving mechanism with the pump pressure mechanism, uniform gas-liquid mixing is achieved, which significantly improves the fineness and adhesion time of the foam, significantly increases the foaming volume and effectively extends the foam half-life, avoids errors caused by manual liquid mixing, and effectively improves the water-saving rate.

[0014] The adjustable fan-shaped nozzle significantly reduces repeated spraying, extends the continuous working time after a single refill, improves overall cleaning efficiency, and saves water significantly while achieving the same cleaning effect, thus reducing the amount of car wash liquid used.

[0015] 3. The bottle body is divided into a pre-rinse chamber and a forward rinse chamber by a partition plate. The flow control mechanism allows for quick switching between the pre-rinse chamber and the forward rinse chamber. This is simple and convenient, avoiding the waste of liquid replacement when operating a single foam spray bottle, and eliminating the need to replace the foam spray bottle, thus effectively saving water resources. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a high-efficiency water-saving foam sprayer for car washing proposed in this invention; Figure 2 This is a perspective view of a high-efficiency water-saving foam sprayer for car washing proposed in this invention; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B in the middle; Figure 5 for Figure 4 A magnified view of a section at point C; Figure 6 This is a schematic diagram of the flow control mechanism of a high-efficiency water-saving foam sprayer for car washing proposed in this invention; Figure 7 for Figure 2 A magnified view of a section at point D; Figure 8 This is a schematic diagram of the sealing cap of a high-efficiency water-saving foam sprayer for car washing proposed in this invention.

[0017] In the diagram: 1. Kettle body, 2. Kettle lid, 3. Pump mechanism, 4. Kettle head, 5. Adjustable fan-shaped nozzle, 6. Liquid guide column, 7. Partition plate, 8. Pre-wash chamber, 9. Forward wash chamber, 10. Suction tube, 11. Liquid guide port, 12. Venturi gas-liquid mixing chamber, 13. Bubble stabilizing guide chamber, 14. Spiral turbulence structure, 15. Foaming net, 16. Threaded interface, 17. Annular connector, 18. Sealing ring, 19. Vertical guide hole, 20. Inverted Y-shaped liquid guide hole, 21. Fixing block, 22. Circular cavity, 23. Valve stem, 24. Sealing gasket, 25. Adjusting screw, 26. Threaded hole, 27. Knob, 28. Annular threaded protrusion, 29. Sealing cap, 30. T-block, 31. Annular ring, 32. Binding rope. Detailed Implementation

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figure 1-8 As shown, a high-efficiency water-saving foam sprayer for car washing includes a body 1, a lid 2 at the upper end of the body 1, a threaded interface 16 at the upper center of the body 1, and an annular connector 17 at the lower center of the lid 2. The annular connector 17 has an external thread on its annular inner wall, which is threaded to the threaded interface 16. A sealing ring 18 is fixedly connected to the top surface of the lid 2 inside the annular connector 17. The threaded interface 16 and the sealing ring 18 are pressed together. The sealing ring 18, made of oil-resistant asbestos rubber, is used to seal between the body 1 and the lid 2. The external thread on the annular connector 17, in conjunction with the threaded interface 16, fixes the lid 2 to the upper end of the body 1. A pumping mechanism 3 is located directly above the lid 2. The pumping mechanism 3 is prior art and will not be described in detail here.

[0021] A nozzle 4 is connected to the outlet of the pump mechanism 3. An adjustable fan-shaped nozzle 5 is connected to the outlet of the nozzle 4. The adjustable fan-shaped nozzle 5 can switch between water jet mode and fan-shaped foam mode, adapting to various working conditions such as car body washing, large-area foaming, and fine corner cleaning. The adjustable fan-shaped nozzle 5 is existing technology and will not be elaborated upon here. The adjustable fan-shaped nozzle 5 significantly reduces repeated spraying, extends the continuous working time after a single refill, improves overall cleaning efficiency, and significantly saves water while achieving the same cleaning effect, reducing the amount of car wash liquid used. The nozzle 4 is equipped with a mixing and water-saving mechanism, including a Venturi-type gas-liquid mixing chamber 12 and a foam-stabilizing guide chamber 13. The Venturi-type gas-liquid mixing chamber 12 consists of a contraction section, a throat section, and a diffusion section. The throat section is connected to the outlet of the pump mechanism 3, and the diffusion section is connected to the foam-stabilizing guide chamber 13. Water flowing through the Venturi-type gas-liquid mixing chamber 12 creates negative pressure, causing air to be drawn in. The foaming liquid is premixed with the car wash liquid. The annular inner wall of the foaming guide cavity 13 near the diffuser section is equipped with a multi-stage foaming net assembly. The inner wall of the foaming guide cavity 13 near the adjustable fan-shaped nozzle 5 is equipped with several symmetrically distributed spiral turbulence structures 14. The spiral turbulence structures 14 in the foaming guide cavity 13 can balance the foaming pressure and eliminate pulsation. Finally, the foam is sprayed out through the adjustable fan-shaped nozzle 5, which significantly improves the fineness and adhesion time of the foam, significantly increases the foaming volume and effectively extends the foam half-life, avoids the error of manual mixing, and effectively improves the water saving rate. The multi-stage foaming net assembly is composed of multiple layers of foaming net 15. The mesh density of the multiple layers of foaming net 15 increases step by step along the flow direction of the foaming guide cavity 13. The spacing of the multiple layers of foaming net 15 is 5mm, and the specific number of multiple layers of foaming net 15 is 2-4 layers. The premixed car wash liquid is refined into uniform foam by the multiple layers of foaming net 15 with the mesh density increasing step by step along the flow direction, which improves the fineness and stability of the foam.

[0022] A liquid guide column 6 is connected between the lid 2 and the inlet of the pump mechanism 3. A partition plate 7 is fixedly connected to the inner wall at the center of the body 1, dividing the body 1 into a pre-wash chamber 8 and a forward wash chamber 9. A flow control mechanism is provided on the liquid guide column 6. Two suction tubes 10 are connected to the lower end of the liquid guide column 6 and are respectively inserted into the pre-wash chamber 8 and the forward wash chamber 9. The flow control mechanism includes two vertical flow guide holes 19 located at the lower end of the liquid guide column 6 and a flow control mechanism located at the upper end of the liquid guide column 6. The system has an inverted Y-shaped liquid guide hole 20, and two vertical flow guide holes 19 that are connected to the inverted Y-shaped liquid guide hole 20. Two suction tubes 10 pass through the sealing ring 18 and are connected to the two vertical flow guide holes 19 respectively. Two symmetrically distributed fixing blocks 21 are fixedly connected to the annular side wall of the liquid guide column 6. Each fixing block 21 has a circular cavity 22. A valve stem 23 is movably inserted through the opposing inner walls of the two circular cavities 22. The valve stem 23 is completely inserted into the vertical flow guide hole 19. It can effectively cut off the flow of the vertical guide hole 19. Two valve stems 23 are respectively set to movably seal through the two vertical guide holes 19. Two fixed blocks 21 are fixed with embedded sealing gaskets 24 on the side walls facing the liquid guide column 6. The sealing gaskets 24 made of oil-resistant asbestos rubber can prevent car wash liquid from entering the circular cavity 22. The valve stems 23 are set to movably seal through the sealing gaskets 24. Adjusting screws 25 are rotatably installed on the inner walls of the two circular cavities 22 away from the valve stems 23. Threaded holes 26 are provided on the side walls of the two valve stems 23 facing the adjusting screws 25. The two adjusting screws 25 are respectively threaded to the two threaded holes 26. A knob 27 is fixedly connected to the end of the two adjusting screws 25 outside the circular cavity 22. The knob 27 is used to rotate the adjusting screws 25, so that the adjusting screws 25 rotate and drive the valve stems 23 to move horizontally along the vertical guide hole 19 in conjunction with the threaded holes 26. The sealing ring 18 and the sealing gaskets 24 are both made of oil-resistant asbestos rubber.

[0023] When pre-washing is required, rotate the knob 27 on one side of the front wash chamber 9 to rotate the adjusting screw 25. This rotation of the adjusting screw 25, in conjunction with the threaded hole 26, causes the valve stem 23 to move horizontally and block the vertical guide hole 19 on one side of the front wash chamber 9. This allows the suction tube 10 in the pre-wash chamber 8 to connect with the pump mechanism 3 through the vertical guide hole 19 on the other side and the inverted Y-shaped liquid guide hole 20, thereby delivering the pre-wash liquid to the jug head 4. When front wash liquid is required, rotate the knobs 27 on both sides of the liquid guide column 6 respectively. The vertical guide hole 19 on one side of the pre-wash chamber 8 is closed, and the vertical guide hole 19 on one side of the forward wash chamber 9 is opened. This allows the forward wash liquid in the forward wash chamber 9 to work with the pump mechanism 3 to guide the forward wash liquid into the nozzle 4 along the suction tube 10, the vertical guide hole 19, and the inverted Y-shaped liquid guide hole 20. The flow control mechanism allows for quick switching between the pre-wash chamber 8 and the forward wash chamber 9. This is simple and convenient, avoids the waste of liquid replacement when operating a single foam sprayer, and eliminates the need to replace the foam sprayer, effectively saving water resources.

[0024] Two liquid guide ports 11 are connected to the inner wall of the vessel body 1 near the top surface. The two liquid guide ports 11 are respectively connected to the pre-wash chamber 8 and the front wash chamber 9. Each of the two liquid guide ports 11 has an annular threaded protrusion 28 at the end away from the vessel body 1. Each of the two annular threaded protrusions 28 is threaded with a sealing cap 29. The sealing cap 29, together with the annular threaded protrusion 28, seals the liquid guide port 11. The design of the liquid guide ports 11 facilitates the addition of liquid or cleaning of the inside of the vessel body 1 without having to add liquid or clean it after rotating the lid 2 each time. The two sealing caps 29 are fixedly connected to the side walls at their center positions. Each T-shaped block 30 is fitted with an annular ring 31, and each annular ring 31 is fixedly connected with a binding rope 32. Both binding ropes 32 are fixedly connected to the body 1. The T-shaped blocks 30 and the sealing caps 29 are integrally formed. Both the annular rings 31 and the binding ropes 32 are made of elastic rubber. The annular rings 31 that are movably fitted on the T-shaped blocks 30, together with the binding ropes 32, limit the sealing caps 29 to prevent them from being lost.

[0025] In use, the invention uses a partition plate 7 to divide the kettle body 1 into a pre-wash chamber 8 and a front-wash chamber 9. The sealing caps 29 on the two liquid inlets 11 are unscrewed, and water and car wash liquid are poured into the pre-wash chamber 8 and front-wash chamber 9 respectively through the two liquid inlets 11 according to the mixing ratio. Then, the sealing caps 29 are tightened onto the liquid inlets 11 in conjunction with the annular threaded protrusions 28, so that the pre-wash chamber 8 and front-wash chamber 9 respectively store the pre-wash liquid and the front-wash liquid. The advantage is that it eliminates the need to rotate the kettle cap 2 each time. The inside of the cleaning vessel 1 is cleaned to facilitate adding liquid or cleaning the inside of the vessel 1. When pre-washing is required, the knob 27 on one side of the front washing chamber 9 is rotated and the adjusting screw 25 is driven to rotate. The rotation of the adjusting screw 25, in conjunction with the threaded hole 26, drives the valve stem 23 to move horizontally and blocks the vertical guide hole 19 on one side of the front washing chamber 9. This allows the suction tube 10 in the pre-washing chamber 8 to connect with the pump mechanism 3 in conjunction with the vertical guide hole 19 on the other side and the inverted Y-shaped liquid guide hole 20, thereby enabling the pre-washing liquid to be delivered into the vessel head 4. When a positive wash solution is needed, turn the knobs 27 on both sides of the liquid guide column 6 to close the vertical guide hole 19 on one side of the pre-wash chamber 8 and open the vertical guide hole 19 on one side of the positive wash chamber 9. This allows the positive wash solution in the positive wash chamber 9 to work with the pump mechanism 3 to guide the positive wash solution into the nozzle 4 along the suction tube 10, the vertical guide hole 19, and the inverted Y-shaped liquid guide hole 20. The flow control mechanism allows for quick switching between the pre-wash chamber 8 and the positive wash chamber 9. This is simple and convenient, avoids the waste of liquid replacement when operating a single foam sprayer, and eliminates the need to replace the foam sprayer, effectively saving water resources. After the wash liquid or pre-wash liquid enters the nozzle 4, the water flow creates negative pressure in the Venturi-type gas-liquid mixing chamber 12, allowing the intake air and car wash liquid to achieve gas-liquid pre-mixing. Subsequently, the pre-mixed car wash liquid is refined into uniform foam through a multi-layered foaming net 15 with progressively increasing mesh density along the flow direction, improving the fineness and stability of the foam. Then, the spiral turbulence structure 14 in the foam stabilizing and guiding chamber 13 can balance the foaming pressure and eliminate pulsation. Finally, it is sprayed out through the adjustable fan-shaped nozzle 5, significantly improving the fineness and adhesion time of the foam, significantly increasing the foaming volume and effectively extending the foam half-life, avoiding manual mixing errors, effectively improving the water-saving rate, and the adjustable fan-shaped nozzle 5 greatly reduces repeated spraying. The continuous working time after a single liquid addition is extended, improving the overall cleaning efficiency. Under the same cleaning effect, the water-saving effect is significant, reducing the amount of car wash liquid used.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency water-saving foam sprayer for car washing, comprising a body (1), a lid (2) at the upper end of the body (1), a pump mechanism (3) directly above the lid (2), a nozzle (4) connected to the outlet of the pump mechanism (3), and an adjustable fan-shaped nozzle (5) connected to the outlet end of the nozzle (4), characterized in that, The kettle head (4) is equipped with a mixing and water-saving mechanism. A liquid guide column (6) is connected between the kettle lid (2) and the liquid inlet of the pump pressure mechanism (3). A partition plate (7) is fixedly connected to the inner wall at the center of the kettle body (1). The partition plate (7) divides the kettle body (1) into a pre-wash chamber (8) and a front wash chamber (9). A flow control mechanism is provided on the liquid guide column (6). Two suction tubes (10) are connected to the lower end of the liquid guide column (6). The two suction tubes (10) are respectively inserted into the pre-wash chamber (8) and the front wash chamber (9). Two liquid guide ports (11) are connected to the inner wall of the kettle body (1) near the top surface. The two liquid guide ports (11) are respectively connected to the pre-wash chamber (8) and the front wash chamber (9).

2. The high-efficiency water-saving foam sprayer for car washing according to claim 1, characterized in that, The mixing and water-saving mechanism includes a Venturi gas-liquid mixing chamber (12) and a foam-stabilizing guide chamber (13) disposed in the kettle head (4). The Venturi gas-liquid mixing chamber (12) is composed of a contraction section, a throat section and a diffusion section. The throat section is connected to the outlet of the pump pressure mechanism (3). The diffusion section is connected to the foam-stabilizing guide chamber (13). The foam-stabilizing guide chamber (13) has a multi-stage foaming net assembly on the annular inner wall near the diffusion section. The foam-stabilizing guide chamber (13) has several symmetrically distributed spiral turbulence structures (14) on the inner wall near the adjustable fan-shaped nozzle (5).

3. The high-efficiency water-saving foam sprayer for car washing according to claim 2, characterized in that, The multi-level foaming mesh assembly is composed of multiple layers of foaming mesh (15). The mesh density of the multiple layers of foaming mesh (15) increases gradually along the flow direction of the foam stabilizing guide cavity (13), and the spacing between the multiple layers of foaming mesh (15) is 5 mm.

4. The high-efficiency water-saving foam sprayer for car washing according to claim 1, characterized in that, The upper end of the center of the kettle body (1) is provided with a threaded interface (16), and the lower end of the center of the kettle lid (2) is provided with an annular connector (17). The annular inner wall of the annular connector (17) is provided with an external thread, which is threadedly connected to the threaded interface (16). The top surface of the kettle lid (2) located inside the annular connector (17) is fixedly connected with a sealing ring (18), and the threaded interface (16) and the sealing ring (18) are pressed together.

5. A high-efficiency water-saving foam sprayer for car washing according to claim 4, characterized in that, The flow control mechanism includes two vertical flow guide holes (19) located at the lower end of the liquid guide column (6). The upper end of the liquid guide column (6) is provided with an inverted Y-shaped liquid guide hole (20). Both vertical flow guide holes (19) are connected to the inverted Y-shaped liquid guide hole (20). Both suction tubes (10) pass through the sealing ring (18) and are connected to the two vertical flow guide holes (19) respectively. Two symmetrically distributed fixing blocks (21) are fixedly connected to the annular sidewall of the liquid guide column (6). Both fixing blocks (21) are provided with circular cavities (22). Valve stems (23) are movably inserted through the opposite inner walls of the two circular cavities (22). The valve stem (23) is movably sealed through two vertical guide holes (19). Each of the two fixed blocks (21) has a sealing gasket (24) fixedly embedded on the side wall facing the liquid guide column (6). The valve stem (23) is movably sealed through the sealing gasket (24). Each of the two circular cavities (22) has an adjusting screw (25) rotatably inserted on the inner wall away from the valve stem (23). Each of the two valve stems (23) has a threaded hole (26) on the side wall facing the adjusting screw (25). The two adjusting screws (25) are threadedly connected to the two threaded holes (26) respectively. Each of the two adjusting screws (25) has a knob (27) fixedly connected to one end outside the circular cavity (22).

6. A high-efficiency water-saving foam sprayer for car washing according to claim 5, characterized in that, Both the sealing ring (18) and the sealing gasket (24) are made of oil-resistant asbestos rubber.

7. A high-efficiency water-saving foam sprayer for car washing according to claim 1, characterized in that, Both of the liquid inlets (11) are provided with annular threaded protrusions (28) at the ends away from the body (1). Both annular threaded protrusions (28) are threaded with sealing caps (29). T-shaped blocks (30) are fixedly connected to the side walls at the center of the two sealing caps (29). Both T-shaped blocks (30) are fitted with annular rings (31). Both annular rings (31) are fixedly connected with binding ropes (32). Both binding ropes (32) are fixedly connected to the body (1).

8. A high-efficiency water-saving foam sprayer for car washing according to claim 7, characterized in that, The T-shaped block (30) and the sealing cap (29) are integrally formed, and the annular ring (31) and the binding rope (32) are both made of elastic rubber.

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