A cyclic water-saving rain test device

Abstract

This utility model relates to the technical field of rain test equipment and discloses a circulating water-saving rain test device, including a water tank, with support columns fixedly connected to the four corners of the upper end of the water tank, and a top plate fixedly connected to the upper end of the support columns; it also includes: a rain mechanism installed at the lower end of the top plate; a drive mechanism installed at the upper end of the top plate, used to drive the rain mechanism to rotate; a water supply mechanism installed inside the right side of the water tank, providing water to the rain mechanism; and a sleeve installed at the lower end of the top plate. This utility model uses a starting motor in conjunction with a worm gear and worm wheel to drive the rain mechanism to rotate as a whole, and utilizes the wavy guide groove on the lower end face of the sleeve to link with the angle adjustment component, enabling the nozzle to achieve stepless change of the pitch angle while revolving, continuously changing the raindrop incident angle within the range of 0°–45°, realistically simulating complex rain fields such as side wind and rain, and oblique wind and rain, significantly improving the test accuracy and repeatability.

Description

Technical Field

[0001] This utility model relates to the technical field of rain test equipment, and in particular to a circulating water-saving rain test device. Background Technology

[0002] Rain testing is a verification method that uses artificially simulated rainfall environments to assess the waterproof capability and functional reliability of a product's outer casing. Based on differences in rainfall patterns, the test is divided into two categories: oscillating pipe rain testing and sprinkler-type rain testing, and is widely used in the aviation, automotive, home appliance, lighting, and military industries. Military equipment, whether in combat readiness or storage phases, may encounter combined corrosion from heavy rain, dripping water, or surface condensation: heavy rain can scatter radar waves and corrode the surface of high-speed aircraft; water seepage can damage internal structures, leading to instantaneous or cumulative failure. Therefore, standardized rain testing is required to verify the rainproof sealing performance and post-rain operational efficiency of equipment during the research, development, delivery, and mass production stages. Similarly, civilian vehicles must undergo random rain testing before rolling off the production line to confirm the sealing integrity of the passenger compartment, luggage compartment, and electrical systems.

[0003] Currently, the industry generally uses fixed rain test equipment to complete the above verification: an array of nozzles or oscillating pipes are arranged at the top, and a grid collection tray is set at the bottom. Tap water is lifted to the nozzles by a centrifugal pump, and the rainfall intensity is roughly adjusted by the valve opening. Some high-end equipment is equipped with flow meters and pressure sensors on the pipeline to achieve closed-loop control of rainfall intensity; a few production lines introduce circulating water tanks and primary filters to perform simple recycling and sedimentation of the test water for reuse.

[0004] In existing fixed structures, the nozzles or oscillating pipes are welded to the foundation or top steel structure via rigid supports, causing raindrops to fall only along a vertical or single fixed angle. Since the angle cannot be adjusted online steplessly, the dynamic pressure, shear flow, and water accumulation conditions on each surface of the test specimen differ significantly from those of the actual rain field, ultimately resulting in distorted waterproof boundary conditions and a significant reduction in test accuracy and repeatability. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a circulating water-saving rain test device to solve the problems of fixed and unadjustable rain angle, inability to realistically simulate complex rain fields, serious waste of water resources due to one-time discharge, and poor test accuracy and repeatability.

[0006] This utility model provides a circulating water-saving rain test device, including a water tank, with support columns fixedly connected to the four corners of the upper end of the water tank, and a top plate fixedly connected to the upper end of the support columns; it also includes:

[0007] A rain shower mechanism is installed at the lower end of the top plate;

[0008] A drive mechanism is mounted on the upper end of the top plate and is used to drive the rain shower mechanism to rotate.

[0009] A water supply mechanism is installed inside the right side of the water tank, and the water supply mechanism provides a water source for the rain shower mechanism;

[0010] A sleeve is installed at the lower end of the top plate, and a wavy guide groove is provided on the lower end face of the sleeve.

[0011] Preferably, the rain shower mechanism includes a connecting pipe rotatably connected inside the top plate, a support plate fixedly connected to the lower end of the connecting pipe, a nozzle hinged to the lower end of the support plate, a corrugated pipe fixedly connected to the lower end of the support plate and communicating with the connecting pipe, the lower end of the corrugated pipe fixedly connected to the water inlet end of the nozzle, and a spring fixedly connected to the lower right side of the support plate, the lower end of the spring fixedly connected to the upper end of the nozzle.

[0012] Preferably, the rain shower mechanism further includes an angle adjustment component, which includes a top rod slidably connected inside the support plate. The upper end of the top rod is rotatably connected to a first roller, the side wall of the first roller abutting against the guide groove on the lower end face of the sleeve. The lower end of the top rod is rotatably connected to a second roller, which abuts against the upper end of the nozzle.

[0013] Preferably, the driving mechanism includes a worm gear, which is rotatably connected to the upper end of the top plate via a bearing seat. A motor is fixedly connected to the upper end of the top plate, and the output shaft of the motor is fixedly connected to the front end of the worm gear. A worm wheel meshes with the side wall of the worm gear, and the worm wheel is fixedly connected to the upper side wall of the connecting pipe.

[0014] Preferably, the water supply mechanism includes a water pump, an installation frame is fixedly connected inside the right side of the water tank, a filter plate is fixedly connected to the left end of the installation frame, the water pump is fixedly connected inside the installation frame, a water pipe is fixedly connected to the outlet end of the water pump, and the end of the water pipe extends through to the upper end of the top plate and is rotatably connected to the upper end of the connecting pipe.

[0015] Preferably, a guide plate is fixedly connected inside the water tank, the guide plate is inclined downward from left to right, a placement platform is fixedly connected to the upper end of the guide plate, the placement platform is located at the lower end of the sleeve, and a fan is fixedly connected to the left side wall of the water tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model uses a motor that starts to drive the rain spray mechanism to rotate as a whole, and uses the wave-shaped guide groove on the lower end face of the sleeve to link with the angle adjustment component, so that the nozzle can achieve stepless change of pitch angle while revolving. It can continuously change the raindrop incident angle within the range of 0°–45°, realistically simulating complex rain fields such as side wind and rain, and oblique wind and rain, which significantly improves the accuracy and repeatability of the test.

[0018] 2. This utility model achieves the recycling of more than 90% of water resources by collecting water through a guide plate, purifying it through a filter plate, and then pumping it back in real time. This significantly reduces water costs and discharge load, while also having the advantages of compact structure, small footprint, and easy maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall front view sectional planar structure of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram of section A;

[0022] Figure 4 This utility model Figure 2 Enlarged structural diagram of section B;

[0023] Figure 5 This is a top view of the drive mechanism of this utility model.

[0024] Numbering on the map:

[0025] 1. Water tank; 11. Support column; 12. Top plate; 13. Guide plate; 14. Placement platform; 15. Mounting frame; 16. Filter plate; 2. Rain shower mechanism; 21. Connecting pipe; 22. Support plate; 23. Nozzle; 24. Spring; 25. Angle adjustment assembly; 251. Top rod; 252. First roller; 253. Second roller; 3. Sleeve; 4. Drive mechanism; 41. Motor; 42. Worm gear; 43. Worm wheel; 5. Fan; 6. Water supply mechanism; 61. Water pump; 62. Water pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-3 As shown, this utility model has the following three specific embodiments.

[0028] Example 1

[0029] A circulating water-saving rain test device includes a water tank 1, with support columns 11 fixedly connected to the four corners of the upper end of the water tank 1, and a top plate 12 fixedly connected to the upper end of the support columns 11; it also includes:

[0030] Rain shower mechanism 2 is installed at the lower end of the top plate 12;

[0031] Drive mechanism 4 is installed on the upper end of top plate 12 and is used to drive rain shower mechanism 2 to rotate.

[0032] Water supply mechanism 6 is installed inside the right side of water tank 1 and provides water source for rain shower mechanism 2;

[0033] Sleeve 3 is installed at the lower end of top plate 12, and a wavy guide groove is provided on the lower end face of sleeve 3.

[0034] A guide plate 13 is fixedly connected inside the water tank 1. The guide plate 13 is inclined downward from left to right. A placement platform 14 is fixedly connected to the upper end of the guide plate 13. The placement platform 14 is located directly below the sleeve 3. A fan 5 is fixedly connected to the left side wall of the water tank 1.

[0035] In this embodiment, as Figures 1-2 As shown, the lower surface of the top plate 12 is fixed with a sleeve 3 by bolts, and a continuous undulating wave-shaped guide groove is machined on the lower end face of the sleeve 3; the rain spray mechanism 2 is driven to rotate by the drive mechanism 4, and when it rotates, it cooperates with the wave-shaped guide groove, and at the same time, water is supplied to it by the water supply mechanism 6 to continuously change the incident angle of raindrops; the guide plate 13 guides the water flowing back to the water tank 1 to the lower right position, and the water flows through the filter plate 16 to remove impurities and then enters the inner side of the mounting frame 15 to prepare for the next spray; the placement platform 14 is used to place the test specimen; the fan 5 blows air to the side of the test specimen, which can accelerate surface drainage and simulate the wind pressure effect in rain.

[0036] Example 2

[0037] The difference from Embodiment 1 is that this embodiment discloses a rain shower mechanism 2 and a drive mechanism 4;

[0038] The rain shower mechanism 2 includes a connecting pipe 21, which is rotatably connected to the inside of the top plate 12. A support plate 22 is fixedly connected to the lower end of the connecting pipe 21. A nozzle 23 is hinged to the lower end of the support plate 22. A corrugated pipe is fixedly connected to the lower end of the support plate 22 and communicates with the connecting pipe 21. The lower end of the corrugated pipe is fixedly connected to the water inlet end of the nozzle 23. A spring 24 is fixedly connected to the lower right side of the support plate 22. The lower end of the spring 24 is fixedly connected to the upper end of the nozzle 23.

[0039] The rain shower mechanism 2 also includes an angle adjustment component 25, which includes a top rod 251. The top rod 251 is slidably connected inside the support plate 22. The upper end of the top rod 251 is rotatably connected to a first roller 252. The side wall of the first roller 252 abuts against the guide groove on the lower end face of the sleeve 3. The lower end of the top rod 251 is rotatably connected to a second roller 253. The second roller 253 abuts against the upper end of the nozzle 23.

[0040] The drive mechanism 4 includes a worm gear 42, which is rotatably connected to the upper end of the top plate 12 via a bearing seat. A motor 41 is fixedly connected to the upper end of the top plate 12. The output shaft end of the motor 41 is fixedly connected to the front end of the worm gear 42. A worm wheel 43 meshes with the side wall of the worm gear 42 and is fixedly connected to the upper side wall of the connecting pipe 21.

[0041] In this embodiment, as Figures 2-3 , Figure 5 As shown, after the motor 41 is energized, the worm gear 42 starts to rotate, and the worm wheel 43 reduces the speed and drives the connecting pipe 21 and its lower support plate 22 to rotate at a constant speed. The tail of the nozzle 23 is continuously pushed up by the spring 24, and the first roller 252 at the upper end of the push rod 251 is always in close contact with the wavy guide groove of the sleeve 3, sliding up and down with the change of the groove surface. The second roller 253 at the lower end of the push rod 251 transmits the lifting displacement to the tail of the nozzle 23, and works in conjunction with the restoring force of the spring 24 to make the nozzle 23 continuously change the pitch angle around the hinge point. The corrugated pipe can freely expand and contract with the angle change to ensure that there is no leakage in the water circuit. During one rotation, the nozzle 23 completes multi-angle sweeping in real time, and each surface of the specimen is hit by rainwater from different incident directions in sequence.

[0042] Example 3

[0043] The difference from Embodiment 2 is that this embodiment discloses a water supply mechanism 6;

[0044] The water supply mechanism 6 includes a water pump 61. A mounting bracket 15 is fixedly connected inside the right side of the water tank 1. A filter plate 16 is fixedly connected to the left end of the mounting bracket 15. The water pump 61 is fixedly connected inside the mounting bracket 15. A water pipe 62 is fixedly connected to the outlet end of the water pump 61. The end of the water pipe 62 extends through to the upper end of the top plate 12 and is rotatably connected to the upper end of the connecting pipe 21.

[0045] In this embodiment, as Figure 2 , Figure 4 As shown, the mounting bracket 15 is installed on the lower right side of the water tank 1, and its left end is fixed to the filter plate 16 for filtering the water source; the water pump 61 is hidden in the inner cavity of the mounting bracket 15, with the inlet close to the bottom of the tank and the outlet quickly connected to the water pipe 62; the water pipe 62 passes through the top plate 12 and is connected to the top of the connecting pipe 21 through a rotary joint, and still maintains a sealed water supply when the connecting pipe 21 is continuously rotated.

[0046] The working principle of this utility model is as follows:

[0047] Before the test, the specimen is placed in the center of the placement platform 14. The water pump 61 is started, and the water in the water tank 1 is collected by the guide plate 13, coarsely filtered by the filter plate 16, and then enters the pump body. It is pumped to the connecting pipe 21 through the water pipe 62, and then ejected from the nozzle 23 through the corrugated pipe to form the initial rain curtain. The motor 41 is powered on, which drives the worm gear 42 to rotate. The worm gear 42 rotates and the worm wheel 43 rotates, thereby decelerating and driving the connecting pipe 21 to rotate at a constant speed. The support plate 22 and the nozzle 23 revolve accordingly. At the same time, the first roller 252 at the upper end of the top rod 251 rolls along the wavy guide groove at the lower end of the sleeve 3. The undulation of the groove surface forces the top rod 251 to slide up and down. The second roller 253 at the lower end transmits the displacement to the tail of the nozzle 23. Together with the restoring force of the spring 24, the nozzle 23 swings back and forth around the hinge point to achieve continuous change of pitch angle. The corrugated pipe can freely expand and contract with the angle of the nozzle 23 to ensure that the water path is unobstructed and leak-free. During a full rotation, nozzle 23 completes multi-angle sweeping, and each surface of the specimen is impacted by rainwater from different incident directions in sequence, realistically simulating a complex rain field. The rainwater flows back to water tank 1 through guide plate 13 and is continuously purified by filter plate 16, forming a closed loop; fan 5 sends air to the side wall of the specimen, accelerating surface drainage and simulating wind pressure in rain, further improving the realism of the test.

[0048] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A cyclic water-saving rain test device comprising a water tank (1), characterized in that, The water tank (1) is fixedly connected to four corners at the top, and a top plate (12) is fixedly connected to the top of each support column (11); it also includes: A rain shower mechanism (2) is installed at the lower end of the top plate (12); A drive mechanism (4) is installed on the upper end of the top plate (12) and is used to drive the rain shower mechanism (2) to rotate. A water supply mechanism (6) is installed inside the right side of the water tank (1), and the water supply mechanism (6) provides a water source for the rain shower mechanism (2); Sleeve (3) is installed at the lower end of the top plate (12), and a wave-shaped guide groove is provided on the lower end face of the sleeve (3).

2. The cyclic water-saving rain test device according to claim 1, wherein The rain shower mechanism (2) includes a connecting pipe (21), which is rotatably connected inside the top plate (12). A support plate (22) is fixedly connected to the lower end of the connecting pipe (21). A nozzle (23) is hinged to the lower end of the support plate (22). A corrugated pipe is fixedly connected to the lower end of the support plate (22) and communicates with the connecting pipe (21). The lower end of the corrugated pipe is fixedly connected to the water inlet end of the nozzle (23). A spring (24) is fixedly connected to the lower right side of the support plate (22). The lower end of the spring (24) is fixedly connected to the upper end of the nozzle (23).

3. The cyclic water-saving rain test device according to claim 1, wherein The rain shower mechanism (2) also includes an angle adjustment component (25), which includes a top rod (251). The top rod (251) is slidably connected inside the support plate (22). The upper end of the top rod (251) is rotatably connected to a first roller (252). The side wall of the first roller (252) abuts against the guide groove on the lower end face of the sleeve (3). The lower end of the top rod (251) is rotatably connected to a second roller (253). The second roller (253) abuts against the upper end of the nozzle (23).

4. The cyclic water-saving rain test device according to claim 1, wherein The drive mechanism (4) includes a worm (42), which is rotatably connected to the upper end of the top plate (12) via a bearing seat. A motor (41) is fixedly connected to the upper end of the top plate (12). The output shaft end of the motor (41) is fixedly connected to the front end of the worm (42). A worm wheel (43) meshes with the side wall of the worm (42), and the worm wheel (43) is fixedly connected to the upper side wall of the connecting pipe (21).

5. The cyclic water-saving rain test device according to claim 1, wherein The water supply mechanism (6) includes a water pump (61), a mounting frame (15) is fixedly connected inside the right side of the water tank (1), a filter plate (16) is fixedly connected to the left end of the mounting frame (15), the water pump (61) is fixedly connected inside the mounting frame (15), a water pipe (62) is fixedly connected to the outlet end of the water pump (61), the end of the water pipe (62) extends through to the upper end of the top plate (12) and is rotatably connected to the upper end of the connecting pipe (21).

6. The cyclic water-saving rain test device according to claim 1, wherein A guide plate (13) is fixedly connected inside the water tank (1). The guide plate (13) is inclined downward from left to right. A placement platform (14) is fixedly connected to the upper end of the guide plate (13). The placement platform (14) is located directly below the sleeve (3). A fan (5) is fixedly connected to the left side wall of the water tank (1).

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