Anti-freezing portable eyewash equipment

Abstract

The utility model provides anti-freezing portable eyewash equipment. The anti-freezing portable eyewash equipment comprises a shell, a vacuum suction device, a water tank and a spray head assembly, the water tank is arranged in the shell, and a heating device is arranged on the side wall of the water tank and used for heating flushing water stored in the water tank; the bottom of the water tank is of an inclined structure, the height of the bottom of the water tank is gradually reduced from one side to the other side through the inclined structure, and one end of the vacuum suction device communicates with the lowest side of the bottom of the water tank. The spray head assembly is located outside the shell and communicates with the other end of the vacuum suction device. By adopting the design of a vacuum suction structure and an inclined water tank, a self-emptying anti-freezing system is formed, the heating effect of a heating area is achieved, the problems that residual water in the water tank and a pipeline freezes in winter and flushing water freezes easily are solved, normal use of equipment in a low-temperature environment is achieved, the maintenance cost and the maintenance frequency are reduced, and the service life of the equipment is prolonged. And reliability and stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of eyewash technology, specifically to a frost-resistant portable eyewash device. Background Technology

[0002] Traditional fixed eyewash stations are prone to freezing in the low temperatures of northern winters, rendering them unusable. Their fixed installation location limits their application and makes them unsuitable for diverse emergency rinsing needs. Maintenance costs are high, and repairs after freezing damage are difficult and time-consuming. The fixed nozzle pressure cannot adapt to different rinsing scenarios. Traditional fixed eyewash stations have significant limitations in low-temperature winter environments and are difficult to maintain, failing to meet the diverse safety and protective equipment requirements of modern industrial production.

[0003] Portable eyewash stations placed in temperature-controlled rooms are cumbersome to access and cannot be used promptly in emergencies, delaying the optimal rinsing time. They can only be used indoors and are unsuitable for outdoor work scenarios. Portable eyewash stations placed in temperature-controlled rooms present numerous inconveniences in practical use and cannot meet the emergency rinsing needs of outdoor work scenarios, thus limiting their application scope. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a frost-proof portable eyewash station.

[0005] The antifreeze portable eyewash station provided by this utility model includes a shell, a vacuum suction device, a water tank, and a nozzle assembly.

[0006] The water tank is located inside the outer shell, and a heating device is provided on the side wall of the water tank for heating the rinsing water stored inside the water tank.

[0007] The bottom of the water tank has an inclined structure, which causes the height of the bottom of the water tank to gradually decrease from one side to the other. One end of the vacuum suction device is connected to the lowest side of the bottom of the water tank.

[0008] The nozzle assembly is located outside the housing and is connected to the other end of the vacuum suction device.

[0009] Preferably, the heating device includes an electric heating module, a waterproof chamber, a waterproof plug, and a circuit board;

[0010] The waterproof compartment is located below the water tank and between the sloping bottom of the water tank and the inner wall of the outer shell. The circuit board is located inside the waterproof compartment. The electric heating module is electrically connected to the circuit board and is installed on the side wall of the water tank.

[0011] One end of the waterproof plug is connected to the circuit board, and the other end of the waterproof plug passes through the waterproof chamber and the outer shell in sequence.

[0012] Preferably, the vacuum suction device includes a vacuum pump and connecting pipelines;

[0013] One end of the connecting pipe is connected to the lowest side of the bottom of the water tank, and the other end of the connecting pipe is connected to the nozzle assembly. The vacuum pump is installed on the connecting pipe and is located in the cavity between the water tank and the outer shell.

[0014] Preferably, a one-way gravity valve is provided at the connection between the inside of the water tank and the vacuum suction device.

[0015] Preferably, the nozzle assembly includes a nozzle and a spring-driven flip cover;

[0016] The spring-driven flip cover is located at the outlet end of the nozzle, and an electric heating wire is installed inside the spring-driven flip cover.

[0017] Preferably, the water inlet at the top of the water tank is provided with an inlet filter screen.

[0018] Preferably, a battery is disposed inside the outer casing, and the battery is electrically connected to the heating device and the vacuum suction device;

[0019] An LED status light is provided on the outside of the housing. The LED status light is electrically connected to the battery and is used to display the battery status.

[0020] Preferably, the inner liner of the water tank and the connecting pipe of the vacuum suction device are both wrapped with an insulation layer and a heat insulation sleeve in sequence.

[0021] The heating device is located outside the inner liner, and the heating area formed is evenly distributed around the circumference of the inner liner.

[0022] Preferably, the bottom of the outer casing is provided with a ground stake interface, and a ground stake is installed inside the ground stake interface.

[0023] Preferably, the nozzle is detachably connected to the vacuum suction device via a snap-fit, and a dust plug is provided at the inlet of the nozzle to seal the inlet end of the nozzle when it is disassembled.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention, by employing a vacuum suction structure and an inclined water tank design, forms a self-draining antifreeze system, along with the heating effect of the heating zone. This solves the problems of residual water freezing in the water tank and pipelines in winter, and the easy freezing of flushing water. It enables the equipment to be used normally in low-temperature environments, reduces maintenance costs and frequency, and improves reliability and stability. Attached Figure Description

[0026] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] The diagram shows:

[0029] Housing 100, Nozzle assembly 105

[0030] Inner tank 101, nozzle 1051

[0031] Heating zone 102, dust plug 1052

[0032] Electric heating module 1021, electric heating wire 1054

[0033] Waterproof compartment 1022, insulation layer 106

[0034] Waterproof plug 1023, heat insulation sleeve 107

[0035] Vacuum suction device 103 LED status light 108

[0036] Vacuum pump 1031, inlet filter screen 109

[0037] Connecting pipe 1032, ground nail interface 110

[0038] Water tank 104, ground stake 111

[0039] One-way gravity valve 1041 Detailed Implementation

[0040] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0041] This utility model discloses a portable antifreeze eyewash station. By adopting a vacuum suction structure and an inclined water tank design, a self-draining antifreeze system is formed, along with the heating effect of the heating zone. This solves the problems of residual water freezing in the water tank and pipelines in winter, and the easy freezing of flushing water. It enables the equipment to be used normally in low-temperature environments, reduces maintenance costs and frequency, and improves reliability and stability.

[0042] According to the frost-proof portable eyewash station provided by this utility model, such as Figure 1As shown, the device includes a housing 100, a vacuum suction device 103, a water tank 104, and a nozzle assembly 105. The water tank 104 is located inside the housing 100, and a heating device is provided on the side wall of the water tank 104 for heating the rinsing water stored inside the water tank 104. The bottom of the water tank 104 has an inclined structure, which causes the height of the bottom of the water tank 104 to gradually decrease from one side to the other. One end of the vacuum suction device 103 is connected to the lowest side of the bottom of the water tank 104. The nozzle assembly 105 is located outside the housing 100, and the nozzle assembly 105 is connected to the other end of the vacuum suction device 103.

[0043] In a preferred embodiment, the heating device includes an electric heating module 1021, a waterproof chamber 1022, a waterproof plug 1023, and a circuit board. The waterproof chamber 1022 is located below the water tank 104, between the inclined bottom of the water tank 104 and the inner wall of the outer casing 100. The circuit board is located inside the waterproof chamber 1022. The electric heating module 1021 is electrically connected to the circuit board and installed on the side wall of the water tank 104. One end of the waterproof plug 1023 is connected to the circuit board, and the other end of the waterproof plug 1023 passes through the waterproof chamber 1022 and the outer casing 100. In further preferred embodiments, the heating device uses a conformal antifreeze with propylene glycol as the main component, which is non-corrosive and can prevent corrosion of equipment pipelines. The electric heating module 1021 and the circuit board are integrated inside the waterproof chamber 1022 and connected to an external power source via a magnetic waterproof plug 1023. In cold environments, the heating system is activated, and the electric heating module heats the antifreeze, thereby ensuring that the rinsing water does not freeze, ensuring that the eyewash station can be used normally, and maintaining a stable and suitable temperature for the rinsing water.

[0044] In a preferred embodiment, the housing 100 is made of ASA engineering plastic, which possesses excellent UV resistance and weather resistance. Its light-stabilized coating allows it to withstand a wide temperature range of 40°C to 80°C and high-intensity UV radiation, effectively preventing the housing from becoming brittle due to sun exposure and significantly extending the device's lifespan. As the external protective structure of the eyewash station, the housing provides a stable installation environment for the internal components.

[0045] In a preferred embodiment, the vacuum suction device 103 includes a vacuum pump 1031 and a connecting pipe 1032; one end of the connecting pipe 1032 is connected to the lowest side of the bottom of the water tank 104, and the other end of the connecting pipe 1032 is connected to the nozzle assembly 105. The vacuum pump 1031 is mounted on the connecting pipe 1032 and is located in the cavity between the water tank 104 and the outer casing 100. In more preferred embodiments, the vacuum suction device 103 includes a manual / electric dual-purpose micro vacuum pump 1031, which is connected to the water tank 104 and the nozzle assembly 105 via the connecting pipe 1032. It automatically starts after the eyewash station is used, emptying the water tank 104 and any residual water in the pipes within 3 seconds to prevent low-temperature freezing and damage to the equipment; during use, it provides a stable two-level pressure to the nozzle 1051.

[0046] The manual / electric dual-purpose miniature vacuum pump 1031 in the vacuum suction device 103 provides two pressure levels to the nozzle 1051 via the connecting pipe 1032 during eyewash station use. The first pressure level is X1 psi, suitable for regular rinsing; the second pressure level is X2 psi (X2 > X1), used for special situations. The user selects the desired pressure level via the pressure switch button on the control panel.

[0047] In a preferred embodiment, a one-way gravity valve 1041 is provided at the connection between the water tank 104 and the vacuum suction device 103; the bottom of the water tank 104 is designed with a 5° tilt angle, which is matched with the one-way gravity valve 1041. During drainage, gravity is used to make the water flow quickly to the drain outlet, and the one-way valve prevents impurities from flowing back. After drainage, the residual trace water is absorbed by the water-absorbing sponge, ensuring that there is no liquid water residue in the equipment.

[0048] In a preferred embodiment, the nozzle assembly 105 includes a nozzle 1051 and a spring-driven flip cover; the spring-driven flip cover is located at the outlet end of the nozzle 1051, and an electric heating wire 1054 is disposed inside the spring-driven flip cover. The nozzle 1051 is detachably connected to the vacuum suction device 103 via a snap-fit, and a dust plug 1052 is provided at the inlet of the nozzle 1051 to seal the inlet end of the nozzle 1051 when it is disassembled; in more preferred embodiments, a silicone dust plug 1052 is provided at the nozzle 1051 and the interface to tightly seal and block impurities. The spring-driven flip cover 1053 in the nozzle area is normally closed by spring force to enhance the dustproof effect. When in use, operating the handle will automatically open the flip cover. The electric heating wire 1054 inside the flip cover prevents snow or ice from adhering to the nozzle in cold weather, ensuring normal operation. The nozzle 1051 adopts a magnetic and snap-fit ​​connection structure. The magnetic part quickly guides the nozzle into position, and pressing the snap-fit ​​part locks it firmly. Assembly or disassembly can be completed within 3 seconds, which is convenient for daily maintenance and nozzle replacement.

[0049] In a preferred embodiment, the water inlet at the top of the water tank 104 is equipped with an inlet filter 109. Furthermore, the 50µm stainless steel inlet filter 109 can efficiently intercept impurities and supports backwashing. Key components such as the filter 109, nozzle 1051, and connecting pipe 1032 can be disassembled by hand, allowing cleaning to be completed within 2 minutes, thus improving daily maintenance efficiency.

[0050] In a preferred embodiment, a battery is disposed inside the housing 100, and the battery is electrically connected to the heating device and the vacuum suction device 103; an LED status light 108 is disposed outside the housing 100, and the LED status light 108 is electrically connected to the battery to display the battery status. Further, red indicates low antifreeze level, yellow indicates filter blockage, and green indicates sufficient battery power and normal equipment operation, so as to facilitate users to understand the equipment status and perform maintenance in a timely manner.

[0051] In a preferred embodiment, the inner liner 101 of the water tank 104 and the outer surface 1032 of the connecting pipe of the vacuum suction device 103 are both sequentially wrapped with an insulation layer 106 and a heat insulation sleeve 107; the heating device is located outside the inner liner 101, and the resulting heating area 102 is evenly distributed circumferentially around the inner liner 101. As a key component for storing rinsing water, the inner liner 101, in a preferred embodiment, is made of food-grade safety standard materials to ensure the purity of the water source and provide users with safe and reliable rinsing water. Its design ensures that the rinsing water is not contaminated during storage and maintains stable water quality.

[0052] Furthermore, the insulation layer 106 is made of flexible phase change material, and the water tank 104 and the outer layer of the pipeline are wrapped with paraffin-based phase change material. Within the temperature range of -20℃ to 10℃, it automatically absorbs or releases heat according to the ambient temperature, maintaining a suitable internal water temperature for 4 hours. The outer aerogel insulation sleeve 107 further reduces heat loss and ensures stable operation of the equipment in extremely cold environments.

[0053] In a preferred embodiment, the bottom of the outer casing 100 is provided with a ground stake interface 110, and a ground stake 111 is installed inside the ground stake interface 110. Furthermore, the bottom has a pre-reserved spiral ground stake interface 110, which is used with 304 stainless steel ground stakes 111 (30cm in length). In windy outdoor environments, the ground stakes can be screwed into the ground to fix the equipment. The portable eyewash station can also be used when necessary, and the wind resistance reaches level 8.

[0054] Working principle:

[0055] Before use, the eyewash station is in standby mode. At this time, the water tank 104 contains hygienic rinsing water, and the inner tank 101 ensures the water source is pure. The electric heating module 1021 in the heating zone 102, controlled by the circuit board, is connected to an external power source via a magnetic waterproof plug 1023. Propylene glycol-based antifreeze, under the action of the heating module, maintains a suitable temperature for the rinsing water in the water tank 104, preventing freezing in low-temperature environments and ensuring the eyewash station is always ready for normal use. Simultaneously, the flexible phase change material insulation layer 106 and the aerogel insulation sleeve 107 work together to automatically adjust the heat according to the ambient temperature within a temperature range of -20℃ to 10℃. When the ambient temperature decreases, the phase change material releases its stored heat, slowing the rate of water temperature drop; the aerogel insulation sleeve, with its extremely low thermal conductivity, effectively reduces the loss of internal heat to the external environment, ensuring the water temperature remains stable for a longer period.

[0056] During use, the nozzle is activated and the dust cover is released: When the user needs to use the eyewash station, operating the handle causes the spring-driven flip cover 1053 of the nozzle assembly 105 to automatically open under the spring force, releasing the dust protection on the nozzle 1051. Simultaneously, the silicone dust plug 1052, which was originally tightly fitted between the nozzle 1051 and the interface, also opens, creating a passage for water flow. In cold weather, the electric heating wire 1054 inside the flip cover continues to operate, generating heat to prevent snow or ice from adhering to the nozzle, ensuring normal water output even in harsh weather conditions.

[0057] Water supply and pressure regulation: The manual / electric dual-purpose miniature vacuum pump 1031 in the vacuum suction device 103 starts working, drawing rinsing water from the water tank 104 through the connecting pipe 1032 and delivering it to the nozzle 1051. The user can select the pressure level output by the vacuum pump 1031 according to actual rinsing needs using the speed switch button on the control panel. The first pressure level is X1psi, suitable for general eye and body surface rinsing, providing a gentle yet effective water flow to avoid excessive impact on injured areas; the second pressure level is X2psi (X2 > X1), suitable for dealing with more stubborn foreign object adhesions and other special situations, outputting a stronger water flow for better rinsing results.

[0058] After use, the self-draining antifreeze mechanism activates. Once the eyewash station is empty, the vacuum suction device 103 automatically switches to its operating mode. The vacuum pump 1031 quickly starts, using its powerful suction to completely evacuate the water tank 104 and any remaining flushing water from the pipes 1032 within just 3 seconds. This process effectively prevents residual water from freezing and expanding in low-temperature environments, thus avoiding damage to the internal pipes and other critical components. Simultaneously, the bottom of the water tank 104 is designed with a 5° tilt angle, coupled with a one-way gravity valve 1041. During drainage, gravity causes the water in the tank to flow quickly to the drain outlet, while the one-way valve prevents external impurities from flowing back into the tank. After drainage, any remaining trace amounts of water are absorbed by absorbent sponges located in key areas, further ensuring that no liquid water remains inside the equipment.

[0059] Equipment Status Monitoring and Prompts: LED status lights 108 provide real-time feedback on the equipment's operating status. After use, if the antifreeze level is low, the status light will turn red, prompting the user to replenish the antifreeze in time to ensure the normal operation of the heating zone 102; if the inlet filter 109 is clogged due to impurities, the status light will turn yellow, reminding the user to clean or replace the filter to ensure the cleanliness of the water source for the next use; when all components of the equipment are operating normally and the battery is fully charged, the status light will turn green.

[0060] For routine maintenance and installation, quick-release cleaning is possible. During routine maintenance, the 50µm stainless steel filter 109 at the inlet can be cleaned by hand. This filter supports backwashing, effectively removing trapped sand, insects, and other impurities, ensuring the water entering the equipment remains clean and uncontaminated. Meanwhile, key components such as the nozzle 1051 and connecting pipes 1032 are also designed for manual disassembly. Users can easily complete disassembly and cleaning within 2 minutes without any tools, greatly improving the efficiency of routine equipment maintenance.

[0061] Bottom Fixation: In outdoor use, especially in windy conditions, 304 stainless steel ground stakes 111 (30cm long) can be screwed into the ground via the bottom spiral ground stake interface 110 to securely fix the device. This fixing method is not only suitable for conventionally placed eyewash stations, but also for portable eyewash stations when necessary. Its strong wind resistance up to level 8 effectively ensures the stability of the device in complex outdoor environments, preventing the device from tipping over due to wind, affecting normal use, or causing damage.

[0062] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "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 application 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 application.

[0063] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A frost-resistant portable eyewash station, characterized in that, It includes a housing (100), a vacuum suction device (103), a water tank (104), and a nozzle assembly (105); The water tank (104) is located inside the outer shell (100), and a heating device is provided on the side wall of the water tank (104) for heating the rinsing water stored inside the water tank (104); The bottom of the water tank (104) is an inclined structure, which causes the height of the bottom of the water tank (104) to gradually decrease from one side to the other. One end of the vacuum suction device (103) is connected to the lowest side of the bottom of the water tank (104). The nozzle assembly (105) is located outside the housing (100) and is connected to the other end of the vacuum suction device (103).

2. The antifreeze portable eyewash station according to claim 1, characterized in that, The heating device includes an electric heating module (1021), a waterproof chamber (1022), a waterproof plug (1023), and a circuit board; The waterproof compartment (1022) is located below the water tank (104) and between the inclined bottom of the water tank (104) and the inner wall of the outer shell (100). The circuit board is located inside the waterproof compartment (1022). The electric heating module (1021) is electrically connected to the circuit board and is installed on the side wall of the water tank (104). One end of the waterproof plug (1023) is connected to the circuit board, and the other end of the waterproof plug (1023) passes through the waterproof chamber (1022) and the outer shell (100) in sequence.

3. The antifreeze portable eyewash station according to claim 1, characterized in that, The vacuum suction device (103) includes a vacuum pump (1031) and a connecting pipe (1032); One end of the connecting pipe (1032) is connected to the lowest side of the bottom of the water tank (104), and the other end of the connecting pipe (1032) is connected to the nozzle assembly (105). The vacuum pump (1031) is installed on the connecting pipe (1032) and is located in the cavity between the water tank (104) and the outer shell (100).

4. The antifreeze portable eyewash station according to claim 1, characterized in that, A one-way gravity valve (1041) is provided at the connection between the water tank (104) and the vacuum suction device (103).

5. The antifreeze portable eyewash station according to claim 1, characterized in that, The nozzle assembly (105) includes a nozzle (1051) and a spring-driven flip cover; The spring-driven flip cover is located at the outlet end of the nozzle (1051), and an electric heating wire (1054) is installed inside the spring-driven flip cover.

6. The antifreeze portable eyewash station according to claim 1, characterized in that, The water tank (104) has an inlet filter screen (109) installed in the water inlet at the top.

7. The antifreeze portable eyewash station according to claim 1, characterized in that, A battery is installed inside the outer casing (100), and the battery is electrically connected to the heating device and the vacuum suction device (103); An LED status light (108) is provided on the outside of the housing (100). The LED status light (108) is electrically connected to the battery and is used to display the battery status.

8. The antifreeze portable eyewash station according to claim 1, characterized in that, The inner liner (101) of the water tank (104) and the connecting pipe (1032) of the vacuum suction device (103) are both wrapped with a heat insulation layer (106) and a heat insulation sleeve (107) in sequence. The heating device is located outside the inner liner (101), and the heating area (102) formed is evenly distributed around the inner liner (101).

9. The antifreeze portable eyewash station according to claim 1, characterized in that, The bottom of the outer casing (100) is provided with a ground nail interface (110), and a ground nail (111) is installed inside the ground nail interface (110).

10. The antifreeze portable eyewash station according to claim 5, characterized in that, The nozzle (1051) is detachably connected to the vacuum suction device (103) by a snap fastener. A dust plug (1052) is provided at the inlet of the nozzle (1051) to seal the inlet end of the nozzle (1051) when the nozzle (1051) is disassembled.

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