Ultraviolet light aging test box

Abstract

The utility model belongs to the technical field of aging test boxes, and particularly relates to an ultraviolet aging test box. Comprising a placing screen plate which is detachably installed in a test cavity through an adjustable support so as to adjust the distance between the placing screen plate and an ultraviolet lamp tube; the ultraviolet lamp tubes and the spraying tubes are arranged at the top of the test cavity in a staggered and spaced manner in the longitudinal direction; the lower end of the spraying pipe is communicated with a water supply tank at the bottom of the box body through a water pump; the water accumulation disc is arranged at the bottom of the test cavity, and an annular electric heating pipe is arranged in the water accumulation disc; a water adding pipe and an overflow pipe are further arranged on the water collecting disc and are respectively communicated with the water supply tank. By means of the structure of the water supply tank, the spraying pipe, the water collecting disc and the overflow pipe, the humidifying and spraying functions can be integrally utilized in one water supply device for recycling, and the advantages of being compact in structure and capable of utilizing space are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of aging test chambers, and specifically relates to an ultraviolet aging test chamber. Background Technology

[0002] The UV aging test chamber uses fluorescent UV lamps as the light source. By simulating UV radiation and condensation in natural sunlight, it accelerates the weathering resistance of materials to obtain results. It can simulate environmental conditions such as UV radiation, rain, high temperature, high humidity, condensation, and darkness in natural climates. By reproducing these conditions and combining them into a cycle, it automatically completes the required number of cycles. The UV aging test chamber is suitable for aging tests of non-metallic materials under sunlight and artificial light sources, and the test products can be of various shapes.

[0003] For example, a UV aging test chamber with patent publication number CN212989130U can spray water from different sides using horizontal spray plates, left vertical spray plates, and right vertical spray plates to simulate a rain scenario. However, the above technical solution cannot simulate humidification and condensation on the product under test, and it lacks the ability to integrate humidification and spraying functions into a single water supply device for cyclical use. Utility Model Content

[0004] The purpose of this invention is to provide an ultraviolet aging test chamber that can simulate ultraviolet light exposure, rain, and high humidity condensation environment for the product under test. It can integrate humidification and spraying functions into a single water supply device for cyclical use through a structure consisting of a water supply tank, spray pipe, water collection tray, and overflow pipe. This avoids the need for an additional drainage device during spraying, achieving the advantages of compact structure and space utilization.

[0005] To solve the above-mentioned technical problems, this utility model provides an ultraviolet aging test chamber, including a chamber body, wherein the chamber body is provided with a test chamber, and further comprising:

[0006] A mesh plate is placed inside the test chamber and can be detachably installed via an adjustable bracket to adjust the distance between it and the ultraviolet lamp tube.

[0007] Ultraviolet lamps and spray pipes are arranged in a staggered pattern at the top of the test chamber in the longitudinal direction; wherein the lower end of the spray pipe is connected to the water supply tank at the bottom of the chamber via a water pump.

[0008] A water collection tray is located at the bottom of the test chamber, and an annular electric heating tube is installed inside the water collection tray. A water inlet pipe and an overflow pipe are also provided on the water collection tray, and the water inlet pipe and the overflow pipe are respectively connected to the water supply tank.

[0009] Preferably, the adjustable bracket includes four strip plates, which are symmetrically installed on the left and right inner walls of the test chamber, and bolt holes for fixing the mesh plate are provided on the strip plates.

[0010] Preferably, the spray pipe further includes several spray nozzles arranged linearly in the transverse direction, and the spray nozzles are spiral spray nozzles.

[0011] Preferably, the spray pipe and the water supply pipe are connected to the water pump via a Y-shaped tee pipe, and an electric ball valve is installed on each of the two branch pipes of the Y-shaped tee pipe.

[0012] Preferably, the water collection tray further includes an air distribution tray that is connected to external air pressure, and the air distribution holes of the air distribution tray are evenly distributed on its surrounding side walls, while ensuring that the height of the air distribution holes of the air distribution tray is higher than the liquid level in the water collection tray.

[0013] Preferably, the water collection pan further includes a liquid level sensor, and the test chamber further includes a light irradiation sensor.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This utility model provides an ultraviolet aging test chamber that can simulate ultraviolet light exposure, rain, and high humidity condensation environment for the product under test. It can integrate humidification and spraying functions into a single water supply device through a structure of water supply tank, spray pipe, water collection tray, and overflow pipe, avoiding the need for an additional drainage device during spraying. This achieves the advantages of compact structure and space utilization. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of an ultraviolet aging test chamber according to this utility model.

[0017] Figure 2 This is an internal view of the structure of a UV aging test chamber without a door, according to this utility model.

[0018] Figure 3 This is a structural cross-sectional view of an ultraviolet aging test chamber according to this utility model.

[0019] Figure 4 This is a structural diagram of the water collection tray and the annular electric heating tube in this utility model.

[0020] In the diagram: 1-box body, 2-test chamber, 3-placement grid plate, 4-adjustable bracket, 5-ultraviolet lamp tube, 6-spray pipe, 7-water collection tray, 8-ring electric heating tube, 9-water filling pipe, 10-overflow pipe, 11-air distribution plate. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0022] like Figures 1-4 As shown, this utility model embodiment provides an ultraviolet aging test chamber, including a chamber body 1, a test chamber 2 provided inside the chamber body 1, and further including:

[0023] The screen plate 3 is placed and detachably installed in the test chamber 2 via the adjustable bracket 4 to adjust the distance between it and the ultraviolet lamp tube 5. By setting the adjustable bracket 4, the light irradiation distance between the product to be tested placed on the screen plate 3 and the ultraviolet lamp tube 5 can be changed.

[0024] The ultraviolet lamps 5 and the spray pipes 6 are arranged in a staggered manner at the top of the test chamber 2 in the longitudinal direction; the lower end of the spray pipes 6 is connected to the water supply tank at the bottom of the chamber 1 through a water pump; so as to realize the ultraviolet irradiation and rain test environment of the product to be tested.

[0025] A water collection tray 7 is located at the bottom of the test chamber 2. An annular electric heating tube 8 is installed inside the water collection tray 7. A water inlet pipe 9 and an overflow pipe 10 are also provided on the water collection tray 7. The water inlet pipe 9 is used to automatically replenish water to the water collection tray 7, and the overflow pipe 10 is used to overflow excess water falling from the water collection tray 7 through the spray pipe 6 to the water supply tank. By controlling the heating of the annular electric heating tube 8, the water injected into the water collection tray 7 is heated to form water vapor, so as to humidify the test chamber 2. The relative humidity in the test chamber 2 reaches more than 95% through humidification, simulating the phenomenon of condensation on the surface of the product under test.

[0026] The adjustable bracket 4 includes four strip plates, which are symmetrically installed on the left and right inner walls of the test chamber 2, and bolt holes for fixing the mesh plate 3 are provided on the strip plates.

[0027] The spray pipe 6 also includes several spray nozzles arranged in a horizontal linear pattern, and the spray nozzles are spiral spray nozzles to increase the spray area of ​​the product to be tested.

[0028] The spray pipe 6 and the water supply pipe 9 are connected to the water pump through a Y-shaped tee pipe, and electric ball valves are installed on the two branch pipes of the Y-shaped tee pipe to control the opening and closing of the spray pipe 6 and the water supply pipe 9.

[0029] The water collection pan 7 also includes an air distribution pan 11 that is connected to the external air pressure. The air distribution holes of the air distribution pan 11 are evenly opened on its surrounding side walls. At the same time, the height of the air distribution holes of the air distribution pan 11 is higher than the liquid level in the water collection pan 7. The air distribution pan 11 can balance the air pressure in the test chamber 2 and form a stable airflow channel, so that water vapor can be continuously and evenly delivered to the surface of the product to be tested in the test chamber 2.

[0030] The water collection pan 7 also includes a liquid level sensor to sense the liquid level height and realize the automatic water filling function. The test chamber 2 also includes a light irradiation sensor to sense the irradiation intensity of the ultraviolet lamp 5 and realize the power adjustment of the ultraviolet lamp 5.

[0031] In addition, this embodiment includes a PLC control box for controlling and adjusting the aforementioned electrical components. To more realistically simulate the material's outdoor usage conditions, the three environmental conditions of sunlight, condensation, and rain can operate independently, or the material can be subjected to a period of ultraviolet irradiation followed by humidification and condensation, then rain, and finally back to ultraviolet irradiation, in a cyclical manner. This combined cyclical approach allows for a more comprehensive assessment of the material's weather resistance under combined environmental conditions.

[0032] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An ultraviolet light aging test chamber comprising a chamber body (1) having a test cavity (2) therein, characterized in that, Also include: Put the net board (3), through the adjustable support (4) can be disassembled and installed in the test cavity (2), to achieve the distance adjustment between the ultraviolet lamp (5); Ultraviolet lamp (5) and spray pipe (6), staggered interval in the longitudinal direction of the top of the test cavity (2); wherein the lower end of the spray pipe (6) through the water pump and the water supply tank at the bottom of the box (1) is communicated; Drain pan (7), arranged at the bottom of the test cavity (2), the drain pan (7) is arranged with annular electric heating tube (8); the drain pan (7) is also provided with water pipe (9) and overflow pipe (10), and the water pipe (9) and overflow pipe (10) are communicated with the water supply tank respectively.

2. An ultraviolet weathering test chamber as defined in claim 1, wherein The adjustable support (4) includes four strip-shaped plates, four strip-shaped plates are symmetrically installed on the left and right inner side walls of the test cavity (2), and the strip-shaped plates are provided with bolt holes for fixing the net board (3).

3. An ultraviolet weathering test chamber as defined in claim 1, wherein The spray pipe (6) further includes a plurality of spray nozzles arranged linearly in the transverse direction, and the spray nozzles are spiral spray nozzles.

4. The ultraviolet weathering test chamber of claim 1, wherein, The spray pipe (6) and the water pipe (9) are communicated with the water pump through the Y type tee pipe respectively, and the two branch pipes of the Y type tee pipe are respectively provided with electric ball valves.

5. An ultraviolet weathering test chamber as defined in claim 1, wherein The drain pan (7) further includes a gas distribution plate (11) connected with the external air pressure, and the gas distribution holes of the gas distribution plate (11) are uniformly arranged on the four side walls, and the height of the gas distribution holes of the gas distribution plate (11) is higher than the liquid level in the drain pan (7).

6. A UV weathering test chamber according to any one of claims 1 to 5, wherein The drain pan (7) further includes a liquid level sensor, and the test cavity (2) further includes a light irradiation sensor.

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