A liquid level float protection device

Abstract

This utility model provides a liquid level float protection device, including a sheet metal left cover and a sheet metal right cover. The sheet metal left cover and the sheet metal right cover form a protective box with openings at the top and bottom. A water inlet is provided on one side of the bottom of the protective box. The protective box is composed of two parts, the sheet metal left cover and the sheet metal right cover, in a split design. During assembly, the sheet metal left cover and the sheet metal right cover are spliced ​​in the left and right directions and fixed with bolts, which is convenient for installation and disassembly. The protective box surrounds the liquid level float in the middle, and the lower half extends into the water, isolating foam and also serving as a windbreak. The protective box has a four-sided enclosure and a hollowed-out design at the top and bottom to maintain the same water level inside and outside, and also facilitates observation of the float position from above. This application has the advantages of low cost, simple structure, convenient disassembly and assembly, and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of liquid level float protection equipment, and in particular to a liquid level float protection device. Background Technology

[0002] Currently, many air conditioning units utilize wet membrane technology for cooling or humidification. These are typically installed inside the unit or at the air inlet. Wet membrane structures usually include a water pump, water tank, and level float. The level float is an essential component, serving several functions: protecting the water pump (designed minimum water level protection, shutting off the pump when the water level is low); automatic overflow (sending an electrical signal to discharge excess water when the water level is high); and automatic water replenishment (outputting an electrical signal to automatically open the water replenishment valve when the water level drops to the designed height). Commonly used wet membrane technologies include single-position and two-position level floats. Figure 1 The level float moves up and down along the float rod as the water level changes. When the float reaches its extreme position, it outputs an electrical signal.

[0003] The level float is installed inside the water tank, such as Figure 2 The following three problems generally exist:

[0004] ① There is a lot of foam in the water tank of the wet membrane. This is because the water flow through the wet curtain packing in the wet membrane will generate air bubbles. The air bubbles gather in the water tank and produce a lot of foam. The foam floats on the water surface and also adheres to the float and float rod of the level float. After the foam dries up after a period of time, impurities adhere to the float and float rod, causing the float to move and become stuck, resulting in float failure and ultimately the failure of the level float.

[0005] ② Regardless of whether the float in the wet film is installed on the windward or ventilated side, it will be affected by the wind. Typically, the wind speed during wet film operation reaches 3 m / s or higher, and the wind direction forms a 90-degree angle with the float's rod, causing the float to be subjected to lateral wind force. This can cause the float to become stuck, leading to float failure and ultimately, the failure of the level float.

[0006] ③ Replacing the float with another type, such as an electronic level float, can solve the jamming problem. However, electronic level floats are large and expensive, and customers generally find the increased cost unacceptable. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the aforementioned problems in the prior art, this utility model provides a liquid level float protection device.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0011] A liquid level float protection device includes a sheet metal left cover and a sheet metal right cover, which together form a protective box with openings at the top and bottom. A water inlet is provided on one side of the bottom of the protective box.

[0012] Preferably, the cross-sections of the sheet metal left cover and the sheet metal right cover are both U-shaped structures, and the free ends of the sheet metal left cover and the sheet metal right cover are connected by bolts. The water inlet is located at the bottom of the sheet metal left cover or the sheet metal right cover.

[0013] Preferably, it also includes a water tank and a crossbeam. The water tank has a top opening, and the crossbeam is installed at the top opening of the water tank. The top of the sheet metal left cover or sheet metal right cover is provided with a U-shaped connecting plate. The bottom end of the vertical part of the U-shaped connecting plate is connected to the sheet metal left cover or sheet metal right cover, and the horizontal part of the U-shaped connecting plate is fixed to the crossbeam by bolts.

[0014] Preferably, the Γ-shaped connecting plate is integrated with the sheet metal left cover or sheet metal right cover.

[0015] Preferably, the bottom of the protective box is fixed to the bottom of the inner wall of the water tank.

[0016] Preferably, both the left and right sheet metal covers are made of stainless steel.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this utility model are as follows: By adopting the above technical solution, the protective box is composed of a sheet metal left cover and a sheet metal right cover, which are two separate parts. During assembly, the sheet metal left cover and the sheet metal right cover are spliced ​​in the left and right directions and fixed with bolts, which makes installation and disassembly convenient. The protective box surrounds the liquid level float in the middle, and the lower half extends into the water, which isolates foam and also has the function of blocking the wind. The protective box is surrounded on all four sides and has a hollow design at the top and bottom to keep the water level inside and outside consistent, and also makes it easy to observe the position of the float from above. This application has the advantages of low cost, simple structure, convenient disassembly and assembly, and high reliability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a liquid level float in the background art;

[0020] Figure 2 This is a schematic diagram of a liquid level float installed inside a water tank in the background art.

[0021] Figure 3 This is a schematic diagram of a liquid level float protection device.

[0022] Figure 4This is a schematic diagram of a combined structure of a liquid level float protection device;

[0023] Figure 5 This is a schematic diagram of a liquid level float protection device installed inside a water tank.

[0024] [Explanation of Labels in the Attached Image]

[0025] 1. Water tank;

[0026] 2. Crossbeam;

[0027] 3. Liquid level float;

[0028] 4. Sheet metal left cover; 41. Water inlet notch;

[0029] 5. Sheet metal right cover; 51. Γ-shaped connecting plate. Detailed Implementation

[0030] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Please refer to Figures 3 to 5 This utility model provides a liquid level float 3 protection device, including a sheet metal left cover 4 and a sheet metal right cover 5. The sheet metal left cover 4 and the sheet metal right cover 5 form a protective box with openings at the top and bottom. A water inlet notch 41 is provided on one side of the bottom of the protective box.

[0032] In use, the protective box consists of two parts: a sheet metal left cover 4 and a sheet metal right cover 5. It is a split design. During assembly, the sheet metal left cover 4 and sheet metal right cover 5 are spliced ​​in the left and right directions and fixed with bolts, which makes installation and disassembly convenient. The protective box surrounds the liquid level float 3 in the middle, and the lower half extends into the water to isolate foam and also has the function of blocking wind. The protective box is surrounded on all four sides and has a hollow design at the top and bottom to keep the water level inside and outside consistent and to facilitate observation of the float position from above. This application has the advantages of low cost, simple structure, convenient disassembly and assembly, and high reliability.

[0033] In this embodiment, the cross-sections of the sheet metal left cover 4 and the sheet metal right cover 5 are both U-shaped. The free ends of the sheet metal left cover 4 and the sheet metal right cover 5 are connected by bolts. The water inlet 41 is located at the bottom of the sheet metal left cover 4 or the sheet metal right cover 5.

[0034] In this embodiment, a water tank 1 and a crossbeam 2 are also included. The water tank 1 has a top opening. The crossbeam 2 is installed at the top opening of the water tank 1. A U-shaped connecting plate 51 is provided on the top of the sheet metal left cover 4 or sheet metal right cover 5. The bottom end of the vertical part of the U-shaped connecting plate 51 is connected to the sheet metal left cover 4 or sheet metal right cover 5. The horizontal part of the U-shaped connecting plate 51 is fixed to the crossbeam 2 by bolts.

[0035] In this embodiment, the Γ-shaped connecting plate 51 is integrated with the sheet metal left cover 4 or the sheet metal right cover 5, which improves the overall strength.

[0036] In this embodiment, the bottom of the protective box is fixed to the bottom of the inner wall of the water tank 1.

[0037] In this embodiment, both the sheet metal left cover 4 and the sheet metal right cover 5 are made of stainless steel.

[0038] The working principle of this utility model is as follows:

[0039] The protective housing consists of two parts: a left sheet metal cover 4 and a right sheet metal cover 5. It is a split design. During assembly, the left sheet metal cover 4 and the right sheet metal cover 5 are spliced ​​together in the left and right directions and fixed with bolts. It is easy to install and disassemble. The protective housing surrounds the liquid level float 3 in the middle, and the lower half extends into the water to isolate foam and also serves as a windbreak. The protective housing has a four-sided enclosure and a hollow design at the top and bottom to keep the water level inside and outside consistent and to facilitate observation of the float position from above. This application has the advantages of low cost, simple structure, convenient disassembly and assembly, and high reliability.

[0040] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0041] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid level float protection device, characterized in that, It includes a sheet metal left cover and a sheet metal right cover, which together form a protective box with openings at the top and bottom. A water inlet is provided on one side of the bottom of the protective box.

2. A liquid level float protector according to claim 1, characterised in that The cross-sections of the sheet metal left cover and the sheet metal right cover are both U-shaped. The free ends of the sheet metal left cover and the sheet metal right cover are connected by bolts. The water inlet is located at the bottom of the sheet metal left cover or the sheet metal right cover.

3. A liquid level float protector according to claim 1, wherein It also includes a water tank and a crossbeam. The water tank has a top opening, and the crossbeam is installed at the top opening of the water tank. The top of the sheet metal left cover or sheet metal right cover is provided with a U-shaped connecting plate. The bottom end of the vertical part of the U-shaped connecting plate is connected to the sheet metal left cover or sheet metal right cover, and the horizontal part of the U-shaped connecting plate is fixed to the crossbeam by bolts.

4. A liquid level float protector according to claim 3, wherein The Γ-shaped connecting plate is integrated with the sheet metal left cover or sheet metal right cover.

5. A liquid level float protector according to claim 3, wherein The bottom of the protective enclosure is fixed to the bottom of the inner wall of the water tank.

6. A liquid level float protector according to claim 1, wherein Both the left and right sheet metal covers are made of stainless steel.

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