Dual mode adjustable pressure wash gun

Abstract

The application discloses a dual-mode adjustable pressure washing lance, comprising a lance body, a quick-release straight-flow / atomizing nozzle, a straight-through flow channel, an integrated rotary pressure regulating and mode switching mechanism, an anti-backflow valve and a multiple sealing structure. The single knob is used to realize continuous water pressure adjustment and water mode switching, and the medical-grade material and anti-slip holding design are used to realize simple operation, stable water outlet and hygiene and safety. The structure effectively solves the problems of single function, uncontrollable water pressure, easy water leakage and complex operation of the existing products, and is suitable for popularization and use in families, old-age care and medical institutions.

Description

Technical Field

[0001] This invention relates to the field of auxiliary rinsing equipment technology, specifically to a dual-mode adjustable pressure rinsing water gun. Background Technology

[0002] In the existing field of rinsing equipment, especially water guns used for personal cleaning, wound care, or medical auxiliary rinsing, there are common problems such as limited functionality, complex operation, and insufficient safety. Traditional rinsing water guns mostly use a fixed nozzle structure, supporting only a single water output mode (such as direct spray or atomization only), making it difficult to meet the water flow pattern requirements of different usage scenarios. Even if some products have mode switching functions, it often requires changing the nozzle or operating multiple independent adjustment parts, which is cumbersome and not user-friendly for elderly users or caregivers. In addition, most products lack precise water pressure adjustment capabilities, with water pressure usually at a fixed level or relying on the pressure of the water source itself. They cannot be continuously and gently adjusted according to the user's skin sensitivity or wound condition, which can easily cause discomfort or even secondary injury due to sudden changes or excessive water pressure. This poses significant safety hazards, especially in highly sensitive scenarios such as elderly care, maternal and infant care, and postoperative wound cleaning.

[0003] In terms of structural design, existing flushing water guns often employ a bent or throttling layout in their internal flow channels, resulting in high water flow resistance and significant pressure loss, affecting water output stability and flushing efficiency. Simultaneously, sealing performance is generally insufficient, leading to leakage at interfaces after prolonged use. Furthermore, most products lack anti-backflow devices, potentially causing sewage backflow during water outages or under negative pressure, posing a risk of cross-infection and failing to meet medical or household hygiene standards. Regarding materials, while some products claim "antibacterial" properties, they often use ordinary plastics, lacking materials truly meeting medical-grade safety certifications. The surfaces also lack anti-slip treatment, making them prone to slipping when operated with wet hands, posing a safety hazard. In addition, the non-removable or complex nozzle structure limits the product's flexibility in switching between different uses, reducing its practicality and expandability.

[0004] Therefore, there is an urgent need for a new type of flushing water gun that integrates dual-mode adjustable pressure, integrated operation, high-efficiency flow channel, multiple seals to prevent backflow, quick-change nozzles, and medical-grade safety materials to fill the market gap and improve user experience and safety. Summary of the Invention

[0005] I. Technical problems to be solved The technical problem to be solved by the present invention is the various problems mentioned in the background art above, and a dual-mode adjustable pressure flushing water gun is provided.

[0006] II. Technical Solution To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a dual-mode adjustable pressure flushing water gun, including a gun body housing, a replaceable nozzle head assembly at the front end of the gun body housing, the nozzle head assembly including a direct flow nozzle and an atomizing nozzle, a water inlet at the rear end of the gun body housing, a central valve body flow channel and a valve core assembly inside, the central valve body flow channel being a straight-through flow channel structure, a mode switching mechanism integrated on the gun body housing, and a control trigger and a side operating handle on the outside.

[0007] As an improvement, the mode switching mechanism is an integrated rotary adjustment structure, including a single adjustment knob that realizes both flushing mode switching and water pressure adjustment functions.

[0008] As an improvement, the DC nozzle and atomizing nozzle adopt a quick-release connection structure, which can be detachably connected to the main body housing of the gun body through the end connector.

[0009] As an improvement, the main body of the gun is composed of an upper shell and a lower shell that are fastened together. Two sets of seals are symmetrically arranged inside, and an anti-backflow valve is integrated at the water inlet.

[0010] As an improvement, the main body shell of the gun is made of medical-grade antibacterial material and has an anti-slip texture on the surface.

[0011] As an improvement, the side operating handle is equipped with an ergonomic grip.

[0012] III. Beneficial Effects The advantages of this invention compared to the prior art are: 1. This dual-mode adjustable pressure rinsing water gun features an innovative dual-mode adjustable pressure design, supporting free switching between direct rinsing and atomized spray modes, and achieving continuous stepless water pressure adjustment. It can precisely adapt to diverse usage scenarios such as sensitive skin care, wound cleaning, and daily cleaning, effectively avoiding discomfort or tissue damage caused by excessive water pressure. Its integrated rotary pressure adjustment / mode switching structure integrates two functions into a single knob operation, simplifying the human-machine interface and making it easy for caregivers and ordinary users to operate, significantly improving ease of use. The internal straight-through flow channel layout greatly reduces water flow resistance and pressure loss, ensuring stable and uniform water pressure, improving rinsing efficiency and user experience consistency.

[0013] The entire unit is equipped with a multi-layered sealing structure and an inlet anti-backflow valve to effectively prevent leakage and sewage backflow, ensuring hygiene and safety during use. The nozzle features a quick-release connection design for easy replacement and cleaning, expanding its application capabilities in various scenarios. The entire gun body is made of medical-grade antibacterial material, combined with an anti-slip texture and an ergonomic side grip, balancing grip comfort and safety. It is particularly suitable for environments with high requirements for hygiene, safety, and ease of use, such as elderly care, maternal and infant households, and medical institutions, and has good potential for widespread adoption. Attached Figure Description

[0014] Figure 1 This is a front view of the dual-mode adjustable pressure flushing water gun of the present invention.

[0015] Figure 2 This is a side view of the dual-mode adjustable pressure flushing water gun of the present invention.

[0016] Figure 3 This invention relates to the dual-mode adjustable pressure flushing water gun nozzle head assembly structure. Figure 1 .

[0017] Figure 4 This invention relates to the dual-mode adjustable pressure flushing water gun nozzle head assembly structure. Figure 2 .

[0018] As shown in the figure: 10, water inlet; 18, main body housing of the gun; 30, valve core assembly; 60, central valve body flow channel; 130, lower housing of the gun; 131, seal; 134, upper housing of the gun; 151, pressure regulation / mode switching mechanism; 17, 26, nozzle head assembly; 23, end connector; 22, side operating handle; 67, control trigger. Detailed Implementation

[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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 — Figure 4As shown, the main body shell 18 of the gun is formed by tightly fastening the upper shell 134 and the lower shell 130 together using snap-fit ​​or ultrasonic welding, creating a closed internal chamber. A standardized interface is provided at the front end of the shell for connecting the nozzle head assembly, and the rear end integrates a water inlet 10, which contains an anti-backflow valve core. A control trigger 67 and a side operating handle 22 are respectively located on the outer side of the shell; the latter is covered with soft TPE material and has ergonomically shaped grooves. The entire shell is injection molded from medical-grade antibacterial polypropylene (PP) or polycarbonate (PC), and the surface is treated with a frosted or dotted texture to enhance slip resistance.

[0021] The purpose of this structure is to provide a high-strength, high-hygiene support frame for the entire machine, ensuring sealing, durability, and grip comfort, while the modular design facilitates the assembly and maintenance of internal components.

[0022] like Figure 1 — Figure 4 As shown, the direct current nozzle 17 and the atomizing nozzle 26 are manufactured independently, each with different orifice diameters and flow guiding structures to achieve direct water flow or micron-level atomization effects. Both are quickly connected to the front end of the main body housing 18 via end connectors 23—such as snap-fit ​​quick couplings or threaded lock structures. Users can replace the nozzles simply by rotating or pressing, without tools.

[0023] The purpose of this structure is to enable physical switching of rinsing modes, expand the application scenarios (such as atomization for wound cleaning and direct current for rinsing dirt), and improve cleaning convenience and accessory replaceability.

[0024] like Figure 1 — Figure 4 As shown, the nozzle body has a central valve body flow channel 60 running through the front and rear. This is a straight channel without bends or necking, and its inner wall is smoothly polished. The valve core assembly 30 is installed in the middle of the flow channel and is controlled by a control trigger 67. A ceramic valve core or a polymer sealing valve is used to reduce wear. Water flows directly from the inlet 10 through the anti-backflow valve into the straight flow channel, and then flows to the nozzle after being regulated by the valve core.

[0025] The purpose of this structure is to minimize water flow resistance and pressure loss, ensure stable and uniform water pressure, improve flushing efficiency, and reduce pump load.

[0026] like Figure 1 — Figure 4 As shown, a pressure regulating / mode switching mechanism 151 is integrated on the side of the main body housing 18 of the gun. Its core is a single knob, which internally links two functional modules via a gear set or cam mechanism: one is to adjust the valve core opening to change the water pressure, and the other is to switch the water flow direction to either a direct current or an atomizing nozzle. Different rotation angles of the knob correspond to different water pressure levels and water output modes, with clear scale markings.

[0027] The purpose of this structure is to integrate voltage regulation and mode switching functions into a single operating element, simplifying the user's operating logic and enabling caregivers or ordinary home users to complete the settings intuitively and quickly, thereby improving the efficiency of human-computer interaction.

[0028] like Figure 1 — Figure 4 As shown, two sets of O-rings 131 are symmetrically arranged at the joint between the upper and lower housings of the gun body to ensure that the housing joints are completely waterproof; the water inlet 10 has a built-in spring-loaded anti-backflow valve that automatically closes when the water pressure disappears or negative pressure occurs to prevent external sewage from flowing back. All internal water circuit interfaces are sealed with silicone gaskets or laser welding.

[0029] The purpose of this structure is to create multiple sealing barriers to effectively prevent water leakage, seepage, and sewage backflow, ensuring hygiene and safety during use, and is especially suitable for medical or sensitive population care environments.

[0030] The working principle of this invention is as follows: During use, water enters the main body housing 18 of the gun through the inlet 10. The anti-backflow valve integrated at the inlet is open under normal water supply conditions, allowing water to flow in; once the water supply is interrupted or the system experiences negative pressure, the valve automatically closes to prevent sewage backflow and ensure hygiene and safety. The water then enters the central valve body flow channel 60, which adopts a straight-through design with a smooth and unobstructed inner wall, effectively reducing flow resistance and pressure loss, and keeping the water flow stable and continuous.

[0031] The user controls the water flow by pressing the control trigger 67 to open the valve core assembly 30. Simultaneously, the integrated rotary adjustment knob on the side—the pressure regulation / mode switching mechanism 151—performs two functions based on its rotation position: firstly, it adjusts the valve core opening or the size of the throttling orifice via a linkage mechanism to achieve continuous stepless adjustment of water pressure; secondly, it switches the internal water flow channel, directing the water flow to either the direct current nozzle 17 or the atomizing nozzle 26. When the knob is in the "direct current" position, the water flow through the direct current nozzle forms a concentrated, highly penetrating jet, suitable for powerful rinsing; when switched to the "atomizing" position, the water flow passes through the microporous structure or vortex chamber within the atomizing nozzle and is broken into a fine mist, suitable for cleaning sensitive skin or wound care.

[0032] The nozzle features a quick-release connection structure (via end connector 23), allowing users to quickly change between different functional nozzles as needed without tools. The entire operation can be completed with just one hand for trigger control and knob adjustment. Combined with the ergonomic side operating handle 22 and the non-slip textured gun body, it provides a stable grip and effortless operation.

[0033] In summary, this water gun features integrated knob for pressure regulation and mode switching, a direct low-resistance flow channel to ensure stable water output, and multiple sealing and anti-backflow structures to ensure safety and hygiene, fully meeting the refined rinsing needs of various scenarios such as elderly care, maternal and infant care, and medical assistance.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-mode adjustable pressure flushing water gun, characterized in that: The gun body includes a main body housing (18), the front end of which is provided with a replaceable nozzle head assembly, the nozzle head assembly specifically including a direct nozzle (17) and an atomizing nozzle (26), the rear end of which is provided with a water inlet (10), the inside of which is provided with a central valve body flow channel (60) and a valve core assembly (30), the central valve body flow channel (60) is a straight-through flow channel structure, the main body housing (18) is integrated with a mode switching mechanism (151), and the outside of which is provided with a control trigger (67) and a side operating handle (22).

2. The dual-mode adjustable pressure flushing water gun according to claim 1, characterized in that: The pressure regulation / mode switching mechanism (151) is an integrated rotary adjustment structure, specifically including a single adjustment knob that realizes the dual functions of flushing mode switching and water pressure adjustment.

3. The dual-mode adjustable pressure flushing water gun according to claim 1, characterized in that: The DC nozzle (17) and atomizing nozzle (26) adopt a quick-release connection structure and are detachably connected to the main body shell (18) of the gun body through the end connector (23).

4. The dual-mode adjustable pressure flushing water gun according to claim 1, characterized in that: The main body housing (18) of the gun body is composed of the upper housing (134) and the lower housing (130) of the gun body. The main body housing (18) of the gun body is provided with two sets of sealing elements (131) symmetrically inside, and an anti-backflow valve is integrated at the water inlet (10).

5. The dual-mode adjustable pressure flushing water gun according to claim 1, characterized in that: The main body shell (18) of the gun is made of medical-grade antibacterial material and has an anti-slip texture on the surface.

6. The dual-mode adjustable pressure flushing water gun according to claim 1, characterized in that: The side operating handle (22) is equipped with an ergonomic grip.

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