A trailer air supply device
By introducing a second water tank and filter components into the trailer air supply system, the problem of scale buildup in the cooling water is solved, ensuring the normal operation and service life of the air compressor, making it suitable for long-distance transport of trailers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-14
AI Technical Summary
In trailer air supply systems, the cooling water of the air compressor is prone to scale buildup, which can cause pipe blockage, affect normal operation, and make water access inconvenient, especially during long-distance transportation.
An air supply device including a second water tank and a filter assembly was designed. The second water tank is equipped with an inlet filter and an outlet filter, which are made of transparent material for easy observation. The filter assembly includes a coarse filter screen, a cation exchange resin material layer and a fine filter screen, which are used to filter and soften tap water or river water to ensure the quality of cooling water.
By adding a second water tank and filter components, the water storage capacity is expanded, sediment is effectively filtered out, scale formation is prevented, and the air compressor can be kept running normally for a long time, thus extending its service life.
Smart Images

Figure CN224496690U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of air supply devices, specifically to an air supply device for trailers. Background Technology
[0002] A trailer is a vehicle towed by a truck but without its own power drive. It consists of one truck (truck, tractor, or forklift) and one or more trailers. The truck and tractor unit are the driving sections of the truck train, called the tractor unit. The driven sections towed by the tractor unit are called trailers. Trailers are an important type of vehicle in road transport, and using truck trains is the most effective and simplest way to improve economic efficiency. They offer advantages such as speed, maneuverability, flexibility, and safety; and can conveniently achieve segmented transport.
[0003] Existing trailers often require an air supply system consisting of an air compressor. The functions of the air supply system may vary depending on the trailer. Specifically, it can be used for pneumatic braking of the wheels, adjustment of air suspension, or for special operations, such as supplying air to the tank of a powder tanker. When the air compressor is working, it needs to dissipate heat, which continuously consumes cooling water. As a type of transport vehicle, trailers often carry out long-distance transportation, so they require a lot of cooling water for the air compressor to dissipate heat. Moreover, it is not convenient to obtain water during transport, so tap water or river water is often used as cooling water. The scale in these water sources may clog the pipes, affecting the air compressor's heat dissipation and causing it to malfunction. Utility Model Content
[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a trailer air supply device. This application provides the following technical solution:
[0005] The system includes an air compressor body, a first water tank, and a second water tank. The first water tank is connected to the air compressor body and is used to provide cooling water for the air compressor body to dissipate heat. The second water tank is connected to the first water tank and is used to replenish the cooling water in the first water tank. A filter assembly is installed in the second water tank, which is used to filter out dirt and soften the water.
[0006] The filtration assembly includes an inlet filter disposed at the inlet of the second water tank and an outlet filter disposed at the outlet of the second water tank.
[0007] The second water tank is made of transparent material to facilitate observation of the water volume and to determine the water inlet filter based on the presence of sediment on the second water tank.
[0008] The water inlet filter includes a water inlet filter housing, and a coarse filter screen, a cation exchange resin material layer, and a fine filter screen are sequentially arranged inside the water inlet filter housing.
[0009] A sealing ring is provided inside the water inlet of the second water tank, and the water inlet filter shell is hung inside the water inlet of the second water tank, with its outer wall in contact with the sealing ring for sealing.
[0010] The water outlet filter is sealed to the outlet of the second water tank and contains a cation exchange resin filter element. The water outlet filter is connected to the first water tank via a flexible hose.
[0011] The first water tank is also equipped with a water inlet.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0013] By adding a second water tank, the water storage capacity is expanded, allowing for more cooling water to be stored and making it more suitable for long-term use. At the same time, a filter component is installed to filter and soften tap water, river water, etc. When the treated tap water or river water is used as cooling water, it is less likely to accumulate scale, ensuring the service life of the air compressor.
[0014] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of a trailer air supply device.
[0017] Figure 2 This is a schematic diagram of a filter assembly for a trailer air supply device.
[0018] Reference numerals in the attached drawings: 1. Air compressor body; 2. First water tank; 21. Water inlet; 3. Second water tank; 31. Sealing ring; 4. Filter assembly; 41. Inlet filter; 411. Inlet filter housing; 412. Coarse filter screen; 413. Cation resin material layer; 414. Fine filter screen; 42. Outlet filter; 421. Cation resin filter element; 43. Hoses. Detailed Implementation
[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] Please refer to Figure 1-2 As shown, this utility model provides a trailer air supply device, including an air compressor body 1, a first water tank 2, and a second water tank 3. The first water tank 2 is connected to the air compressor body 1 and is used to provide cooling water required for heat dissipation of the air compressor body 1. The second water tank 3 is connected to the first water tank 2 and is used to replenish the cooling water in the first water tank 2. A filter assembly 4 is provided in the second water tank 3, which is used to filter dirt and soften water.
[0023] The filter assembly 4 includes an inlet filter 41 disposed at the inlet of the second water tank 3 and an outlet filter 42 disposed at the outlet of the second water tank.
[0024] The second water tank 3 is made of a transparent material, such as transparent plastic.
[0025] The water inlet filter 41 includes a water inlet filter housing 411, and a coarse filter screen 412, a cation exchange resin material layer 413, and a fine filter screen 414 are sequentially arranged inside the water inlet filter housing 411.
[0026] A sealing ring 31 is provided inside the inlet of the second water tank 3, and the water inlet filter housing 411 is hung inside the inlet of the second water tank 3, with its outer wall in contact with the sealing ring 31 for sealing; in an optional embodiment, a flange is provided on the top of the water inlet filter housing 411, and a protrusion is provided on the inner wall of the inlet of the second water tank 3, with the water inlet filter housing 411 being hung on the protrusion through the flange.
[0027] The water outlet filter 42 is sealed to the outlet of the second water tank 3, and is equipped with a cation resin filter element 421. The water outlet filter 42 is connected to the first water tank 2 through a hose 43.
[0028] Furthermore, the water outlet filter 42 is cylindrical with meshes at both ends, and the cation resin filter element 421 is filled between the meshes; the water outlet filter 42 and the second water tank 3 can be connected by threads or flanges, and the hose 43 is clamped onto the water outlet filter 42.
[0029] The first water tank 2 is also equipped with a water inlet 21. When using special coolant or treated soft water, it can be directly added to the first water tank 2 through the water inlet 21.
[0030] Specifically, such as Figure 1 As shown, in this embodiment, the air compressor is a diesel air compressor, and the first water tank 2 is a diesel engine water tank used for cooling the diesel engine; in another embodiment, the air compressor is a water-cooled air compressor, and the first water tank 2 is an air compressor liquid storage tank used for cooling the air compressor.
[0031] In practice, as the air compressor is used, cooling water is continuously consumed, and the water level in the first water tank 2 decreases. Water from the second water tank 3 is injected into the first water tank 2 through the hose 43 to replenish the lost cooling water. When adding tap water to the second water tank 3 as cooling water, the tap water passes through the coarse filter 412 to remove large particles of impurities, and then through the cation exchange resin layer 413 to adsorb soluble ions, softening the tap water. After being filtered again by the fine filter 414, it enters the second water tank 3. From the second water tank 3, it passes through the outlet filter 42 to adsorb soluble ions before entering the first water tank 2 as cooling water. Generally, the inlet filter 41 should be replaced and cleaned regularly. If it is not possible to replace and clean it regularly, observe the liquid level in the second water tank 3 and check for sedimentation. If sedimentation has occurred, the inlet filter 41 needs to be replaced.
[0032] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A trailer air supply device, characterized in that: The system includes an air compressor body (1), a first water tank (2), and a second water tank (3). The first water tank (2) is connected to the air compressor body (1) and is used to provide cooling water for the air compressor body (1) to dissipate heat. The second water tank (3) is connected to the first water tank (2) and is used to replenish the cooling water in the first water tank (2). A filter assembly (4) is provided in the second water tank (3) and is used to filter dirt and soften water.
2. The trailer air supply device as described in claim 1, characterized in that: The filtration assembly (4) includes an inlet filter (41) disposed at the inlet of the second water tank (3) and an outlet filter (42) disposed at the outlet of the second water tank.
3. The trailer air supply device as described in claim 2, characterized in that: The second water tank (3) is made of transparent material.
4. The trailer air supply device as described in claim 2, characterized in that: The water inlet filter (41) includes a water inlet filter housing (411), and a coarse filter screen (412), a cation resin material layer (413), and a fine filter screen (414) are arranged sequentially inside the water inlet filter housing (411).
5. A trailer air supply device as described in claim 4, characterized in that: A sealing ring (31) is provided inside the water inlet of the second water tank (3), and the water inlet filter shell (411) is hung inside the water inlet of the second water tank (3), with its outer wall in contact with the sealing ring (31) for sealing.
6. A trailer air supply device as described in claim 2, characterized in that: The water outlet filter (42) is sealed to the outlet of the second water tank (3), and a cation resin filter element (421) is installed inside it. The water outlet filter (42) is connected to the first water tank (2) through a hose (43).
7. A trailer air supply device as described in claim 1, characterized in that; The first water tank (2) is also equipped with a water inlet (21).