Ultraviolet aging test box

Abstract

The embodiment of the utility model provides an ultraviolet aging test box which comprises a main frame, a vacuum box body, a temperature measuring sensor and a cold water tank, and the vacuum box body and the cold water tank are both arranged in the main frame; the temperature measuring sensor is arranged on the vacuum box body and is used for measuring the temperature of the vacuum box body; the vacuum box body comprises a shell and a vacuum cavity, and the vacuum cavity is provided with a vacuum chamber for accommodating a test material; the shell is arranged in the vacuum cavity in a sleeving mode and connected with the vacuum cavity in a sealed mode. A cooling groove is formed in the outer wall of the vacuum cavity, and the cooling groove is spirally distributed in the outer wall of the vacuum cavity; the cold water tank communicates with the cooling tank through a water inlet pipe and a water outlet pipe. According to the technical scheme provided by the embodiment of the invention, the temperature of the vacuum box body can be accurately controlled, and the problem that the temperature of the vacuum box body rises along with the increase of the test calculation time in the material test process, so that the test is inaccurate is greatly solved.

Description

Technical Field

[0001] The present application relates to the technical field of ultraviolet testing instruments, and in particular to an ultraviolet aging test chamber. Background Art

[0002] The UV aging test chamber uses fluorescent UV lamps as a light source. By simulating the UV radiation and condensation found in natural sunlight, it conducts accelerated weathering tests on materials to determine their weatherability and light stability. The UV aging test chamber can simulate natural climate conditions such as UV radiation, rain, high temperature, high humidity, condensation, and darkness. By reproducing these conditions, combining them into a single cycle, the chamber automatically executes the required number of cycles. The UV aging test chamber is suitable for testing the resistance of non-metallic materials to sunlight and artificial light sources, and the test products can be of various shapes.

[0003] When testing the weather resistance of materials in a vacuum aging test chamber, it is necessary to activate the UV lamp to irradiate the materials for a long time. During this process, the temperature of the test environment will continue to rise due to the long-term exposure of the UV lamp. However, the current vacuum aging test chamber cannot accurately control the temperature of the entire cavity, so the influence of temperature cannot be eliminated.

[0004] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0005] The embodiments of the present application provide a UV aging test chamber to solve or alleviate one or more of the technical problems mentioned above.

[0006] The embodiment of the present application provides a UV aging test chamber, comprising: a main frame, a vacuum chamber, a temperature sensor, and a cold water tank, wherein the vacuum chamber and the cold water tank are both arranged in the main frame; the temperature sensor is arranged on the vacuum chamber for measuring the temperature of the vacuum chamber;

[0007] The vacuum box includes a shell and a vacuum cavity, the vacuum cavity has a vacuum chamber for accommodating test materials; the shell is sleeved on the vacuum cavity, and the shell and the vacuum cavity are sealed and connected; a cooling groove is opened on the outer wall of the vacuum cavity, and the cooling groove is spirally distributed on the outer wall of the vacuum cavity; the cold water tank is connected to the cooling groove through a water inlet pipe and a water outlet pipe.

[0008] Optionally, a water inlet and a water outlet are provided on the shell, and the water inlet and the water outlet are respectively and independently connected to the cooling tank; the water inlet pipe is connected to the water inlet, and the water outlet pipe is connected to the water outlet.

[0009] Optionally, the cooling trough includes a water inlet trough and a water outlet trough, and the water inlet trough and the water outlet trough are both spirally distributed on the outer wall of the vacuum cavity; the water inlet trough is connected to the water inlet, and the water outlet trough is connected to the water outlet; one end of the water inlet trough away from the water inlet and the other end of the water outlet trough away from the water outlet are connected through a connecting trough; wherein, the water inlet trough and the water outlet trough are parallel to each other.

[0010] Optionally, a cavity seal is provided at one end of the vacuum box, and a sealing door for opening and closing is provided at the other end; the cavity seal is sealed to the vacuum box via a first sealing ring, and the sealing door is sealed to the vacuum box via a second sealing ring.

[0011] Optionally, a plurality of pressing members are provided on the shell, and the pressing members are used to press the sealing door onto the shell.

[0012] Optionally, the pressing member includes a mounting seat, a fixing rod, a clamping rod and a locking ring, wherein the mounting seat is provided on the housing, and the fixing rod is provided on the mounting seat; one end of the clamping rod is sleeved on the fixing rod and is rotatably connected to the fixing rod; the locking ring is threadedly connected to the clamping rod, and the locking ring is connected to the fixing rod via the clamping rod;

[0013] The sealing door is provided with a clamping block, and a clamping groove is formed on the clamping block; when the sealing door is closed, a part of the clamping block is located between the locking ring and the mounting seat, and the clamping rod is located in the clamping groove; the locking ring is used to lock the sealing door to the shell by rotating on the clamping rod.

[0014] Optionally, a hand-held ring is further provided on the locking ring, and the hand-held ring can drive the locking ring to rotate on the clamping rod.

[0015] Optionally, a placement plate and several ultraviolet lamp assemblies are further provided in the vacuum chamber, wherein the placement plate is used to hold the material to be tested; and the several ultraviolet lamp assemblies are located on one side of the placement plate for holding the material, and are used to irradiate the material.

[0016] Optionally, the ultraviolet lamp assembly includes an ultraviolet lamp, a fixed plate, a first side plate and a second side plate, the first side plate and the second side plate are arranged on the same side of the fixed plate; the ultraviolet lamp is arranged on the fixed plate, and the ultraviolet lamp is located between the first side plate and the second side plate; the first side plate and the second side plate are used to concentrate the light irradiated by the ultraviolet lamp.

[0017] Optionally, a vacuum pump is also provided on the main frame, and the vacuum pump is used to form the vacuum chamber into a vacuum state; the vacuum box is provided with an exhaust solenoid valve, an exhaust solenoid valve and a vacuum gauge; the exhaust solenoid valve is used to control the start of the vacuum pump, the exhaust solenoid valve is used to contact the vacuum state of the vacuum chamber, and the vacuum gauge is used to detect the vacuum degree of the vacuum chamber.

[0018] The above technical solution adopted in the embodiments of the present application may have the following advantages:

[0019] During the process of testing materials in a UV aging test chamber, when the temperature sensor detects that the temperature of the vacuum chamber is too high, the cooling water tank starts, and the cooling water enters the cooling tank through the water inlet pipe, and then flows out from the water outlet pipe to achieve heat exchange, which is used to reduce the temperature in the vacuum chamber. The temperature of the vacuum chamber can be accurately controlled, which greatly improves the problem of inaccurate testing caused by the temperature increase of the vacuum chamber as the test time increases during the material testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0021] Figure 1 It is a structural schematic diagram of the UV aging test chamber provided in an embodiment of the present application.

[0022] Figure 2 This is a front view of the UV aging test chamber provided in an embodiment of the present application.

[0023] Figure 3 It is a cross-sectional view of the vacuum box of the UV aging test box provided in an embodiment of the present application.

[0024] Figure 4 Schematic diagram of the vacuum box of the UV aging test box provided in an embodiment of the present application.

[0025] Figure 5 Schematic diagram of the structure of the vacuum box of the UV aging test box provided in an embodiment of the present application, showing the vacuum chamber.

[0026] Figure 6 yes Figure 5 Enlarged view of part A.

[0027] Figure 7 Schematic diagram of the structure of the vacuum chamber of the UV aging test chamber provided in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. Main frame; 11. Temperature sensor; 12. Cold water tank; 13. Vacuum pump; 14. Display screen; 15. Vacuum gauge controller; 16. Roller; 17. Installation chamber; 18. Cabinet door; 19. Workbench; 2. Vacuum box; 21. Shell; 211. Water inlet; 212. Water outlet; 213. Mounting base; 214. Fixing rod; 215. Clamping rod; 216. Locking ring; 217. Handle ring; 22. Vacuum chamber; 221, vacuum chamber; 222, water inlet trough; 223, water outlet trough; 224, connecting trough; 225, placement plate; 226, UV lamp; 227, fixing plate; 228, first side plate; 229, second side plate; 23, cavity head; 24, sealing door; 241, snap-in block; 242, snap-in groove; 25, exhaust solenoid valve; 26, exhaust solenoid valve; 27, vacuum gauge; 28, exhaust muffler. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions, and advantages of this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and examples. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. This application will be described in detail below with reference to the accompanying drawings and in conjunction with the examples.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0033] like Figures 1 to 6As shown, the UV aging test chamber includes a main frame 1, a vacuum box 2, a temperature sensor 11, a cold water tank 12, a vacuum pump 13, a display screen 14, a vacuum gauge controller 15 and an exhaust muffler 28. Four rolling wheels 16 are provided at the bottom of the main frame 1 to facilitate the movement of the entire UV aging test chamber. The main frame 1 has an installation room 17, in which the cold water tank 12 and the vacuum pump 13 are fixedly arranged, and the installation room 17 is opened and closed by a cabinet door 18. A workbench 19 is provided on the top of the main frame 1 away from the rolling wheels 16, and the vacuum box 2 and the display screen 14 are arranged on the workbench 19. The vacuum gauge controller 15 is located on the display screen 14 and is used to detect and control the vacuum state in the vacuum box 2.

[0034] The vacuum chamber 2 is fixed to the workbench 19 with screws, and a temperature sensor is connected to the vacuum chamber 2 for measuring its temperature. The vacuum chamber 2 comprises a housing 21, a vacuum chamber 22, a chamber head 23, and a sealing door 24. The vacuum chamber 22 has a vacuum chamber 221 for accommodating test materials. The chamber head 23 is fixed to one end of the vacuum chamber 22, while the sealing door 24 is located at the other end. The sealing door 24 is used to open and close the vacuum chamber 221, facilitating the placement of materials into the vacuum chamber 221 for testing.

[0035] The cavity head 23 is sealed to one end of the vacuum chamber 2 via a first sealing ring, and the sealing door 24 is sealed to the vacuum chamber 2 via a second sealing ring. In the embodiment of the present application, both the first sealing ring and the second sealing ring can be made of silicone material. Therefore, the first sealing ring and the second sealing ring have strong heat resistance and can improve the sealing performance of the vacuum chamber 221 at high temperatures. The vacuum chamber 221 is sealed by the cavity head 23 and the sealing door 24, so that the vacuum chamber 221 can be in a sealed state. The shell 21 is mounted on the vacuum chamber 22. After the shell 21 is mounted on the vacuum chamber 22, it is connected by welding. Therefore, the shell 21 and the vacuum chamber 22 are in a sealed state. A cooling groove is opened on the outer wall of the vacuum chamber 22, and the cooling groove is spirally wound on the outer wall of the vacuum chamber 22; the cold water tank 12 is connected to the cooling groove via an inlet pipe and an outlet pipe.

[0036] In this embodiment, during the process of testing materials in a UV aging test chamber, when the temperature sensor 11 detects that the temperature of the vacuum chamber 2 is higher than the set value, the cold water tank 12 is activated. The cooling water in the cold water tank 12 enters the cooling tank through the water inlet pipe. The cooling water flows through the entire cooling tank to cool the vacuum chamber 22, and then flows out from the water outlet pipe to achieve heat exchange and reduce the temperature in the vacuum chamber 2. When the temperature sensor detects that the temperature of the vacuum chamber 2 is lower than the set value, the cold water tank 12 stops working. Therefore, the temperature of the vacuum chamber 2 can be accurately controlled, which greatly improves the problem of the vacuum chamber 2 increasing in temperature as the test time increases during the material testing process, thereby causing inaccurate testing. In addition, the provision of the first sealing ring and the second sealing ring further improves the sealing performance of the vacuum chamber 221, thereby improving the problem of reduced vacuum degree in the vacuum chamber 221 due to long-term testing.

[0037] In an optional embodiment, a water inlet 211 and a water outlet 212 are provided on the shell 21 , and the water inlet 211 and the water outlet 212 are respectively and independently connected to the cooling tank; the water inlet pipe is connected to the water inlet 211, and the water outlet pipe is connected to the water outlet 212.

[0038] In this embodiment, since the water inlet 211 and the water outlet 212 are respectively and independently connected to the cooling tank, the cooling water in the water inlet pipe can enter the cooling tank through the water inlet 211, and the cooling water flowing through the entire cooling tank enters the water outlet pipe through the water outlet 212, completing the cooling treatment of the vacuum cavity 22 by the cooling water.

[0039] In an optional embodiment, the cooling trough includes a water inlet trough 222 and a water outlet trough 223. Both the water inlet trough 222 and the water outlet trough 223 are spirally distributed on the outer wall of the vacuum chamber 221 and are parallel to each other. The water inlet trough 222 is connected to the water inlet 211, and the water outlet trough 223 is connected to the water outlet 212. The end of the water inlet trough 222 away from the water inlet 211 and the end of the water outlet trough 223 away from the water outlet 212 are connected by a connecting groove 224. Therefore, the water inlet 211 and the water outlet 212 are both located at the same end of the housing 21.

[0040] In this embodiment, the cooling tank includes an inlet tank 222 and an outlet tank 223, and the inlet tank 222 and the outlet tank 223 are arranged parallel to each other. In the process of cooling the vacuum cavity 22 with cooling water, the cooling water enters the inlet tank 222, flows through the entire inlet tank 222, and then enters the outlet tank 223 through the connecting tank 224. Then, the cooling water flows through the entire outlet tank 223 to the outlet 212 and flows out. The cooling water goes back and forth in the cooling tank on the outer wall of the vacuum cavity 22 to fully cool the vacuum cavity 22, which has a better cooling effect and saves more resources. And because the water inlet 211 and the water outlet 212 are both located at the same end of the shell 21, the water inlet pipe and the water outlet pipe can be more conveniently connected to the cold water tank 12, reducing the length of the water inlet pipe and the water outlet pipe, saving costs, and making the entire device more concise.

[0041] In an optional embodiment, the housing 21 is provided with a plurality of pressing members for pressing the sealing door 24 against the housing 21. When an aging test is required for the material, the staff only needs to open the pressing members, then open the sealing door 24 and place the material into the vacuum chamber 221 for testing.

[0042] In an alternative embodiment, the pressing member includes a mounting seat 213, a fixing rod 214, a clamping rod 215, and a locking ring 216. The mounting seat 213 is screwed to the end of the housing 21 near the sealing door 24, and the fixing rod 214 is mounted on the mounting seat 213. One end of the clamping rod 215 is sleeved onto the fixing rod 214 and is rotatably connected to the fixing rod 214. The locking ring 216 is threadedly connected to the other end of the clamping rod 215. The locking ring 216 rotates on the clamping rod 215 to move toward or away from the fixing rod 214. The locking ring 216 is connected to the fixing rod 214 via the clamping rod 215. The sealing door 24 is provided with a clamping block 241, which defines a clamping groove 242. When the sealing door 24 is closed, a portion of the clamping block 241 is located between the locking ring 216 and the mounting seat 213, and the clamping rod 215 is located in the clamping groove 242. The locking ring 216 abuts against the surface of the clamping block 241, and then the locking ring 216 pushes the clamping block 241 in the direction close to the fixed rod 214 by rotating on the clamping rod 215, so as to lock the sealing door 24 on the shell 21. It should be noted that the number of clamping members is not limited. In this embodiment, the number of clamping members can be four, and the four clamping members are distributed in the circumference of the shell 21, which can lock the sealing door 24 on the shell 21 more stably. The clamping members used in this embodiment are easy and quick to operate, and are convenient for staff to use. A hand-held ring 217 is also integrally formed on the locking ring 216, and the hand-held ring 217 can drive the locking ring 216 to rotate on the clamping rod 215. The structural design of the annular hand-held ring 217 is more convenient for staff to hold, so that the sealing door 24 can be opened and closed more quickly.

[0043] In an optional embodiment, a placement plate 225 and several UV lamp assemblies are further provided within the vacuum chamber 22. The placement plate 225 is used to hold the material to be tested. The UV lamp assemblies are located on one side of the placement plate 225 for irradiating the material. The provision of multiple UV lamp assemblies enables aging testing of the material to be tested.

[0044] In an optional embodiment, the UV lamp assembly includes a UV lamp 226, a fixing plate 227, a first side plate 228, and a second side plate 229. The first side plate 228 and the second side plate 229 are disposed on the same side of the fixing plate 227. The UV lamp 226 is disposed on the fixing plate 227 and positioned between the first side plate 228 and the second side plate 229. The first side plate 228 and the second side plate 229 are used to focus the light emitted by the UV lamp 226. The light emitted by the UV lamp 226 is focused by the first side plate 228 and the second side plate 229 and then irradiated onto the test material, thereby improving material testing efficiency and reducing light loss from the UV lamp 226. Furthermore, this reduces the risk of light from the UV lamp 226 irradiating the vacuum chamber 22, which could further increase the temperature of the vacuum chamber 22.

[0045] In an optional embodiment, the vacuum pump 13 is connected to the vacuum chamber 221 and is used to create a vacuum state in the vacuum chamber 221. The vacuum box 2 is provided with an exhaust solenoid valve 25, an exhaust solenoid valve 26, a vacuum gauge 27, and an exhaust muffler 28; the exhaust solenoid valve 25 is used to control the start of the vacuum pump 13, the exhaust solenoid valve 26 is used to contact the vacuum state of the vacuum chamber 221, and the vacuum gauge 27 is used to detect the vacuum degree of the vacuum chamber 221.

[0046] In this embodiment, when the vacuum gauge 27 detects a deviation between the vacuum level in the vacuum chamber 221 and the set value, the exhaust solenoid valve 25 is activated, causing the vacuum pump 13 to begin operating, increasing the vacuum level in the vacuum chamber 221. When the vacuum level in the vacuum chamber 221 reaches the set value, the vacuum pump 13 stops operating. Furthermore, after the material test is completed, the exhaust solenoid valve 26 is activated to release the vacuum in the vacuum chamber 221, facilitating the opening of the sealing door 24 and the removal of the test material. During this process, the exhaust muffler 28 serves to eliminate the noise generated by the exhaust.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] For ease of description, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right," "lateral, vertical, perpendicular, horizontal," and "top, bottom" are generally based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the devices or components referred to must have a specific direction or be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of this application. The directional terms "inside" and "outside" refer to the inside and outside relative to the outline of the components themselves. For example, if the device in the drawings is inverted, the device described as "above" or "on top of" other devices or structures will be positioned "below" or "below" other devices or structures. Therefore, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0049] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0050] Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0051] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0052] It should also be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like throughout this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described herein. The appearance of the same term in multiple places in this specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also fall within the scope of this application.

[0053] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] It should also be noted that the above are only preferred embodiments of the present application and do not limit the scope of patent protection of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present application.

Claims

1. A UV aging test chamber, characterized in that, include: A main frame (1), a vacuum box (2), a temperature sensor (11) and a cold water tank (12), wherein the vacuum box (2) and the cold water tank (12) are both arranged in the main frame (1); the temperature sensor (11) is arranged on the vacuum box (2) and is used to test the temperature of the vacuum box (2); The vacuum box (2) comprises a shell (21) and a vacuum cavity (22), wherein the vacuum cavity (22) has a vacuum chamber (221) for accommodating a test material; the shell (21) is sleeved on the vacuum cavity (22), and the shell (21) and the vacuum cavity (22) are sealed and connected; a cooling groove is provided on the outer wall of the vacuum cavity (22), and the cooling groove is spirally distributed on the outer wall of the vacuum cavity (22); and the cold water tank (12) is connected to the cooling groove via a water inlet pipe and a water outlet pipe.

2. The UV aging test chamber according to claim 1, characterized in that: The shell (21) is provided with a water inlet (211) and a water outlet (212), and the water inlet (211) and the water outlet (212) are respectively and independently connected to the cooling tank; the water inlet pipe is connected to the water inlet (211), and the water outlet pipe is connected to the water outlet (212).

3. The UV aging test chamber according to claim 2, characterized in that: The cooling trough comprises a water inlet trough (222) and a water outlet trough (223), and the water inlet trough (222) and the water outlet trough (223) are both spirally distributed on the outer wall of the vacuum cavity (22); the water inlet trough (222) is connected to the water inlet (211), and the water outlet trough (223) is connected to the water outlet (212); an end of the water inlet trough (222) away from the water inlet (211) and an end of the water outlet trough (223) away from the water outlet (212) are connected via a connecting trough (224); Wherein, the water inlet trough (222) and the water outlet trough (223) are parallel to each other.

4. The UV aging test chamber according to claim 1, characterized in that: One end of the vacuum box (2) is provided with a cavity sealing head (23), and the other end is provided with a sealing door (24) for opening and closing; the cavity sealing head (23) is sealedly connected to the vacuum box (2) via a first sealing ring, and the sealing door (24) is sealedly connected to the vacuum box (2) via a second sealing ring.

5. The UV aging test chamber according to claim 4, characterized in that: A plurality of pressing members are provided on the housing (21), and the pressing members are used to press the sealing door (24) onto the housing (21).

6. The UV aging test chamber according to claim 5, characterized in that: The pressing member comprises a mounting seat (213), a fixing rod (214), a clamping rod (215) and a locking ring (216); the mounting seat (213) is arranged on the housing (21); the fixing rod (214) is arranged on the mounting seat (213); one end of the clamping rod (215) is sleeved on the fixing rod (214) and is rotatably connected to the fixing rod (214); the locking ring (216) is threadedly connected to the clamping rod (215); and the locking ring (216) is connected to the fixing rod (214) via the clamping rod (215); The sealing door (24) is provided with a clamping block (241), and a clamping groove (242) is provided on the clamping block (241); when the sealing door (24) is in a closed state, a portion of the clamping block (241) is located between the locking ring (216) and the mounting seat (213), and the clamping rod (215) is located in the clamping groove (242); the locking ring (216) is used to lock the sealing door (24) on the housing (21) by rotating on the clamping rod (215).

7. The UV aging test chamber according to claim 6, characterized in that: The locking ring (216) is further provided with a hand-held ring (217), and the hand-held ring (217) can drive the locking ring (216) to rotate on the clamping rod (215).

8. The UV aging test chamber according to claim 1, characterized in that: A placement plate (225) and a plurality of ultraviolet lamp assemblies are also provided in the vacuum cavity (22). The placement plate (225) is used to hold materials to be tested. The plurality of ultraviolet lamp assemblies are located on a side of the placement plate (225) holding the materials and are used to irradiate the materials.

9. The UV aging test chamber according to claim 8, characterized in that: The ultraviolet lamp assembly comprises an ultraviolet lamp (226), a fixing plate (227), a first side plate (228) and a second side plate (229), wherein the first side plate (228) and the second side plate (229) are arranged on the same side of the fixing plate (227); the ultraviolet lamp (226) is arranged on the fixing plate (227), and the ultraviolet lamp (226) is located between the first side plate (228) and the second side plate (229); the first side plate (228) and the second side plate (229) are used to gather light irradiated by the ultraviolet lamp (226).

10. The UV aging test chamber according to any one of claims 1 to 9, characterized in that: The main frame (1) is further provided with a vacuum pump (13), and the vacuum pump (13) is used to form a vacuum state in the vacuum chamber (221); the vacuum box (2) is provided with an exhaust solenoid valve (25), an exhaust solenoid valve (26), and a vacuum gauge (27); the exhaust solenoid valve (25) is used to control the start-up of the vacuum pump (13), the exhaust solenoid valve (26) is used to contact the vacuum state of the vacuum chamber (221), and the vacuum gauge (27) is used to detect the vacuum degree of the vacuum chamber (221).

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