Y-shaped flow guide type spray gun assembly with improved cleaning efficiency

Abstract

The application discloses a Y-shaped flow guide type spray gun assembly with improved cleaning efficiency, and belongs to the technical field of cleaning and disinfecting equipment. The spray gun assembly adopts a modular series connection structure. Liquid flows into the spray gun assembly through a liquid inlet interface, is transported to a Y-shaped one-to-two flow guide main body through a spray gun main pipeline and a knurled adapter, is symmetrically branched after the process, is sealed by sealing rubber pads at both ends, is synchronously sprayed through a combined spray head, core components are made of corrosion-resistant materials such as 316L stainless steel and PVDF, and are suitable for acid-base media. The flow channel of the Y-shaped flow guide main body is polished and the bifurcated structure is optimized to reduce turbulence and residual liquid retention. The sealing rubber pads form double sealing to prevent leakage. The combined spray head supports quick replacement of various nozzles such as fan-shaped and conical nozzles and is suitable for different cleaning requirements. The application realizes double-path synchronous spraying, improves the cleaning coverage area by more than 1 times, simultaneously solves the problems of sealing, disassembly and assembly and adaptability, significantly reduces the maintenance cost, and provides an efficient and weather-resistant solution for industrial cleaning and disinfection.

Description

Technical Field

[0001] This invention relates to the field of cleaning and disinfection equipment technology, specifically to a Y-shaped guide spray gun assembly with excellent corrosion resistance and dual-path synchronous spraying, suitable for cleaning or disinfecting the surfaces of workpieces and equipment in water, acid and alkali cleaning solutions, and highly corrosive media. Background Technology

[0002] In industrial cleaning and disinfection, existing spray guns generally have the following shortcomings:

[0003] First, traditional single-nozzle spray guns require repeated movement of the gun to cover the surface of the object being cleaned. For equipment requiring large-area cleaning, this results in long cleaning times and low efficiency. Second, some multi-nozzle spray guns use simple diversion pipe designs, which have poor sealing, allowing corrosive media to penetrate the gaps between components and accelerate corrosion. The rough flow channels also easily accumulate residual liquid, exacerbating localized corrosion. Problems include poor sealing (prone to leakage), uneven flow (large differences in pressure between the two spray paths), and cumbersome disassembly and assembly, leading to unstable cleaning results and high maintenance costs. Third, they lack adaptability. Most nozzles have fixed structures, making it difficult to flexibly change them according to different cleaning needs (such as fan-shaped coverage or concentrated impact), limiting application scenarios.

[0004] Therefore, a corrosion-resistant, diverter-type spray gun assembly with a compact structure, reliable sealing, higher efficiency, and stronger adaptability was designed, which improved work efficiency. Summary of the Invention

[0005] This invention provides a Y-shaped flow-guiding spray gun assembly that achieves dual-path synchronous spraying, improving cleaning efficiency while solving problems related to sealing, disassembly, and compatibility, and reducing usage and maintenance costs. Through modular design, symmetrical flow diversion, reliable sealing, and corrosion-resistant materials and structural anti-corrosion design, it breaks through the efficiency and lifespan bottlenecks in corrosive environments, providing a "high-efficiency + weather-resistant" dual-excellence solution for industrial cleaning.

[0006] The spray gun assembly is a modular series structure. The overall architecture and flow path logic is that the liquid enters from the liquid inlet (6), is transported to the knurled adapter (4) through the main spray gun pipeline (5), and then passes through the Y-shaped one-to-two flow guide body (3) to achieve symmetrical flow division. Finally, after being sealed by the sealing gaskets (2) at both ends, it is sprayed out synchronously by the combined nozzle (1) to form the working capability of dual-path spray cleaning.

[0007] 1-Combined nozzle: Stainless steel shell (304) with built-in ceramic nozzle [wear-resistant and corrosion-resistant], screwed into the Y-shaped one-to-two flow guide body outlet through external thread; the nozzle can be replaced as needed [fan-shaped nozzle covers a wide area, cone-shaped nozzle concentrates impact, and atomizing nozzle cleans finely], achieving the effect of "one nozzle for multiple uses".

[0008] 2- Sealing Gasket: Fluororubber [FKM], resistant to oil and acids / alkalis (pH 2-12), is selected to replace nitrile rubber. After being embedded in the annular sealing groove of the Y-shaped split-type flow guide body, it is pressed and sealed against the end face of the combined nozzle [the gasket is compressed to form an elastic sealing layer when the nozzle is screwed in].

[0009] The 3-Y shaped split-flow guide body is made of PVDF (injection molded) or 316L stainless steel (die-cast, surface passivated). PVDF is resistant to strong acids and alkalis, while stainless steel has improved corrosion resistance after passivation. The flow channel has a symmetrical Y-shaped structure. The inlet is a cylindrical straight channel, which branches into two symmetrical outlets after a 45° transition section. The inner wall of the flow channel is polished (roughness Ra≤0.8μm), and a 3mm radius corner is provided at the bifurcation to avoid turbulence. An annular sealing groove is machined at the outlet end for embedding a sealing gasket.

[0010] 4- Knurled Adapter: Made of 316L stainless steel, knurled for anti-slip, with passivated threads. Threaded at both ends: One end connects to the main spray gun pipeline, fixed by argon arc welding and then tapped; the other end connects to the Y-shaped splitter body, with copper threaded inserts pre-embedded during injection molding; the outer surface is machined with diamond knurling for easy hand-tightening and disassembly.

[0011] 5-Spray gun main pipeline: 316L stainless steel tubing with polished inner wall [Ra≤1.6μm] to reduce residual liquid retention and fluid resistance. One end is welded to the inlet interface or manufactured as a single piece, while the other end is threaded to a knurled adapter [or directly welded to adapt to different working conditions].

[0012] 6- Liquid Inlet Interface: Made of 304 stainless steel, with standard external thread, compatible with existing liquid supply systems [such as high-pressure pumps and cleaning fluid tanks]. The interface end is chamfered [1×45°] for easy and quick connection.

[0013] All surfaces in contact with the medium are continuous and smooth [without dents or gaps], preventing residual liquid from accumulating and causing localized corrosion; the knurled adapter supports manual disassembly and assembly [without tools], and the combined nozzle can be turned in ≤5 seconds, significantly reducing maintenance complexity; the dual outlet dimensions and angles of the Y-shaped flow channel are completely symmetrical [machining tolerance ≤0.05mm], ensuring that the flow rate difference between the two fluids is ≤3% and the pressure difference is ≤5%, achieving synchronous and uniform spraying.

[0014] This invention has many beneficial effects:

[0015] Breakthrough in corrosion resistance: Made of materials such as stainless steel, PVDF, and fluororubber, it is compatible with acidic and alkaline media with pH 2 to 12, solving the corrosion and leakage problems of traditional spray guns and extending the service life of spray gun equipment.

[0016] Leap in efficiency: Dual nozzles [high pressure, low pressure, round hole, fan shape, etc.] spray simultaneously, increasing the cleaning coverage area by more than 1 times compared to a single nozzle, significantly reducing the number of times the spray gun needs to be moved, and improving efficiency.

[0017] Reliable sealing: The sealing gasket is embedded in the Y-shaped two-part flow guide sealing groove, which fits tightly under pressure, completely solving the leakage problem and improving the reliability of the spray gun.

[0018] Easy maintenance: The knurled adapter supports manual disassembly and assembly, and the modular nozzles can be quickly replaced, reducing maintenance difficulty and time costs.

[0019] Highly adaptable: Adaptable to different cleaning scenarios, the nozzle can be replaced as needed [fan-shaped, cone-shaped, etc.], taking into account both highly corrosive [such as chemical] and routine cleaning [such as automotive painting], making it a multi-purpose machine.

[0020] Compact structure: The components adopt a modular design, with reasonable connections, low processing and assembly costs, and are easy to mass-produce. Attached Figure Description

[0021] Figure 1 A schematic diagram of a Y-shaped flow-guiding spray gun assembly for improving cleaning efficiency;

[0022] 1—Combined nozzle; 2—Sealing gasket; 3—Y-shaped split-type flow guide body; 4—Knurled adapter; 5—Spray gun main pipeline; 6—Liquid inlet.

[0023] Figure 2 This is a sample of a combined nozzle.

[0024] Figure 3 It is a Y-shaped, two-part diversion body.

[0025] Figure 4 It is a knurled adapter.

[0026] Figure 5 This refers to the main pipeline and liquid inlet of the spray gun. Detailed Implementation

[0027] The specific implementation process of the present invention will be described in further detail below.

[0028] 1. Liquid supply connection—corrosion-resistant connection and initial flow

[0029] Interface sealing: The 316L stainless steel inlet interface (6) is connected to the liquid supply system [such as corrosion-resistant pumps and liquid storage tanks] through a standard external thread. The thread surface is passivated and sealed with PTFE raw material tape (optional, enhanced sealing in extreme corrosion scenarios) to prevent the medium from leaking from the thread gap.

[0030] Initial flow: The corrosive medium enters the interface at a certain pressure and flow rate. Due to the chamfer of the interface [1×45°], it flows smoothly into the main pipeline of the spray gun (5).

[0031] 2. Fluid Transportation—Low-resistance, corrosion-resistant pipeline transport

[0032] Pipeline characteristics: The main pipeline is made of 316L stainless steel polished pipe [inner wall Ra≤1.6μm], the smooth surface reduces turbulence and media retention; reduced turbulence → reduced pressure loss, ensuring stable terminal injection pressure; reduced retention → avoids residual liquid accumulation causing local corrosion [such as pitting corrosion], extending pipeline life.

[0033] Flow state: The medium is uniformly propelled in a laminar / transitional flow state inside the pipe. The corrosion resistance of 316L material resists acid and alkali erosion, and there is no rust even after long-term contact.

[0034] 3. Flow splitting transition—uniform distribution of symmetrical flow channels

[0035] Connector adaptation: The medium enters the Y-shaped one-to-two flow guide body (3) through the knurled adapter (4); the connector is made of 316L stainless steel, and the knurled surface is easy to twist by hand while wearing gloves [avoiding tool scratches on the anti-corrosion layer], and the thread is passivated to prevent the medium from penetrating and corroding along the thread.

[0036] The Y-shaped flow channel features a straight inlet that branches into two outlets (90° included angle, symmetrically distributed) via a 45° transition section and an R3 rounded corner, ensuring smooth, impact-free flow.

[0037] 4. Sealing and Compaction—Dual Sealing Mechanism of Fluororubber

[0038] Pre-sealing structure: Fluororubber gasket (2) is embedded in the annular sealing groove of the Y-shaped main outlet. The gasket is interference-fitted with the groove wall to initially form a static sealing barrier.

[0039] Dynamic sealing enhancement: When the combined nozzle (1) is screwed in with threads: the thread pre-tightening force pushes the nozzle end face to squeeze the rubber pad, and the rubber pad is compressed to 1.2mm [flush with the groove depth], filling the gap in the groove and forming an elastic sealing layer; after the medium enters, the fluid pressure further presses the rubber pad against the groove wall and the nozzle end face, realizing the "pre-tightening + pressure" double seal, completely blocking the leakage path of corrosive medium, and preventing the medium from invading the thread gap and causing corrosion.

[0040] 5. Jet Synergy – High-efficiency cleaning with dual-path synchronization

[0041] Nozzle compatibility and spray patterns: Nozzles support quick replacement: Fan-shaped nozzles: form a 120° wide spray surface, covering an area twice that of a single nozzle, suitable for large-area rinsing; Conical nozzles: focus into a 5° concentrated jet, increasing impact pressure by 30%, suitable for removing thick scale layers. The 316L stainless steel nozzle housing is resistant to media corrosion, and the threaded connection with the Y-shaped body is sealed, eliminating the risk of media leakage.

[0042] 6. Closed-loop equipment design and maintenance protection – no blind spots

[0043] Residual liquid removal: After the liquid supply is stopped, the smooth flow channel [main pipeline Ra≤1.6μm, Y-type body Ra≤0.8μm] allows the medium to drain naturally (it can be drained by tilting the spray gun), without residual liquid retention causing under-deposit corrosion.

[0044] Ease of maintenance: Knurled joints can be disassembled and assembled by hand in ≤10 seconds, avoiding tool contact with corrosive media; quick-change nozzle design in ≤5 seconds; fluororubber gaskets are reusable in ≤10% compression deformation, reducing maintenance frequency in corrosive environments.

Claims

1. A Y-shaped guide spray gun assembly for improving cleaning efficiency, characterized in that, It includes a liquid inlet (6), a spray gun main pipeline (5), a knurled adapter (4), a Y-shaped two-way flow guide body (3), a sealing gasket (2), and a combined nozzle (1); the liquid inlet (6) is connected to one end of the spray gun main pipeline (5), and the other end of the spray gun main pipeline (5) is connected to the inlet of the Y-shaped two-way flow guide body (3) through the knurled adapter (4). The two outlets of the Y-shaped two-way flow guide body (3) are respectively provided with sealing gaskets (2), and the combined nozzle (1) is connected to the outside of the sealing gaskets (2); the liquid flows in through the liquid inlet (6), passes through the spray gun main pipeline (5) and the knurled adapter (4) in sequence, and after being symmetrically divided in the Y-shaped two-way flow guide body (3), it is sealed by the sealing gasket (2) and sprayed out synchronously by the combined nozzle (1).

2. The Y-shaped guide spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, The liquid inlet port (6) is made of 316L stainless steel and has a standard external thread. The port end has a 1×45° chamfer.

3. The Y-shaped guide spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, The main pipeline (5) of the spray gun is a 316L stainless steel pipe with an inner wall roughness Ra≤1.6μm. One end is welded to the liquid inlet (6) or integrally formed, and the other end is threaded or welded to the knurled adapter (4).

4. The Y-shaped guide spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, The knurled adapter (4) is made of 316L stainless steel. The outer surface is knurled with diamond pattern and the two ends are threaded. One end is connected to the main pipeline of the spray gun (5) and the other end is connected to the Y-shaped one-to-two flow guide body (3).

5. The Y-shaped guide spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, The Y-shaped diverter body (3) is made of PVDF material injection molding or 316L stainless steel die casting with surface passivation treatment; its internal flow channel is a symmetrical Y-shaped structure, the inlet is a cylindrical straight channel, and it is bifurcated into two symmetrical outlets after a 45° transition section. The roughness of the inner wall of the flow channel Ra≤0.8μm, the bifurcation point is provided with R3mm rounded corner, and the outlet end is machined with an annular sealing groove.

6. The Y-shaped flow-guiding spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, The sealing gasket (2) is made of fluororubber, which is oil-resistant and acid and alkali-resistant. It is embedded in the annular sealing groove of the outlet of the Y-shaped two-way flow guide body (3) and is squeezed and sealed with the end face of the combined nozzle (1).

7. The Y-shaped guide spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, The combined nozzle (1) includes a 304 stainless steel shell and a nozzle, which is screwed into the outlet of a Y-shaped two-way flow guide body (3) through an external thread; the ceramic nozzle is detachable and replaceable, and the replacement types include fan-shaped nozzle, cone nozzle and atomizing nozzle.

8. The Y-shaped guide spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, The two outlets of the Y-shaped diverter body (3) have an included angle of 90°, and the included angle between the two outlets and the central axis is 45°.

9. A Y-shaped flow-guiding spray gun assembly for improving cleaning efficiency according to claim 1, characterized in that, All surfaces of components in contact with the liquid are continuous and smooth, without dents or gaps.

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