Remotely controllable salt spray test box

Abstract

The utility model provides a salt spray test box capable of being remotely controlled, and belongs to the technical field of test equipment. A water tank is arranged in the test box body, a matching tank is further arranged on the outer side of the test box body, a water injection pipe communicated with the water tank is connected to the bottom of the matching tank, a stirring assembly is arranged in the matching tank, and a water inlet pipe and a salt outlet of the salt storage tank are connected to the upper portion of an opening of the matching tank. An electronic liquid level meter located in a water tank of the salt spray test box monitors the water level of a solution in the water tank in real time, and when the water tank is in a low water level state, an alarm signal is sent to a handheld remote terminal of a tester through a processing module and a wireless signal receiving and transmitting module; a tester can send the concentration and weight of a sodium chloride solution needing to be blended to the processing module through the remote terminal, then the processing module controls to inject a proper amount of clear water and salt into the matching tank, and after stirring and dissolving, the solution is injected into the water tank for supplementation, and the effect of improving the sodium chloride solution supplementation efficiency of the salt spray test box is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, in particular to a remotely controlled salt spray test box. Background Art

[0002] Salt spray test is an environmental test that mainly uses artificial simulated salt spray environment conditions created by salt spray test equipment to evaluate the corrosion resistance of products or metal materials. The salt spray test chamber is a test equipment used to artificially simulate salt spray environment. The chamber has a certain volume. After the metal sample to be tested is placed in the chamber, water mist containing a quantitative concentration of sodium chloride is sprayed out from the laboratory inside the chamber to simulate the environment required for the test.

[0003] During the use of the salt spray test chamber, the test personnel need to prepare the sodium chloride solution in advance. After preparation, pour the solution into the test chamber filling port. The test can only be started after the low water level alarm light of the test chamber is eliminated. During the test, it is necessary to pay attention to the water level of the sodium chloride solution in the test chamber. When the water level is low, the test personnel need to re-prepare the solution and re-inject it. However, repeated preparation of the solution is likely to affect the normal work process of the test personnel, and the solution concentration is prone to errors during the manual preparation process, affecting the final test results. Utility Model Content

[0004] In view of the above problems, the utility model provides a remotely controlled salt spray test chamber.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0006] A remotely controlled salt spray test chamber is provided, comprising a test chamber body, a water tank is arranged in the test chamber body, a manual water injection port connected to the water tank is arranged on the top of the test chamber body, a matching tank is also arranged on the outside of the test chamber body, a water injection pipe is connected to the bottom of the matching tank, the water injection pipe is connected to the water tank, a first electronic valve is arranged on the water injection pipe, a stirring assembly is arranged in the matching tank, the top of the matching tank is opened, a water inlet pipe is arranged above the opening of the matching tank, the water inlet pipe is connected to an external water source, a second electronic valve is arranged on the water inlet pipe, a salt storage tank is also arranged above the matching tank, a salt outlet whose opening and closing is controlled by a third electronic valve is arranged at the bottom of the salt storage tank, a first gravity sensor for detecting the weight of a solution in the matching tank is arranged on the test chamber body, and a second gravity sensor for detecting the weight of salt in the salt storage tank is arranged in the salt storage tank.

[0007] Furthermore, the stirring assembly includes a rotating shaft vertically arranged in the matching tank, a bracket is arranged on the test box body, the top end of the rotating shaft is rotatably connected to the bracket, a motor for driving the rotating shaft to rotate is arranged on the bracket, and a plurality of stirring blades are fixedly arranged on the side wall of the rotating shaft.

[0008] Furthermore, a planetary gear assembly is arranged on the bracket, the planetary gear assembly comprises a sun gear and a plurality of planetary gears, the motor is drivingly connected to the sun gear and is used to drive the sun gear to rotate, and the top end of the rotating shaft is fixedly connected to any one of the planetary gears.

[0009] Furthermore, it also includes a processing module, and the second electronic valve, the third electronic valve, the first gravity sensor and the second gravity sensor are all electrically connected to the processing module;

[0010] The processing module controls the opening time of the second electronic valve and the third electronic valve based on the input weight data and concentration data of the sodium chloride solution, the weight data of the solution in the matching tank detected by the first gravity sensor, and the weight data of the salt in the salt storage tank detected by the second gravity sensor.

[0011] Furthermore, it also includes a wireless signal receiving and sending module, which is electrically connected to the processing module. An electronic liquid level meter is arranged in the water tank, and the electronic liquid level meter, the motor and the first electronic valve are electrically connected to the processing module. The wireless signal receiving and sending module receives the remote terminal signal of the test personnel, outputs the weight data and concentration data of the sodium chloride solution to the processing module, and the electronic liquid level meter monitors the liquid level in the water tank in real time, and sends the real-time water level signal to the remote terminal of the test personnel through the wireless signal receiving and sending module;

[0012] The processing module controls the motor to start and then delays the control of the first electronic valve to open.

[0013] Furthermore, a water outlet pipe is connected to the matching tank, a fourth electronic valve is provided on the water outlet pipe, a rotating spray head is extended downward from the top of the matching tank, a spray pipe is connected to the water inlet end of the rotating spray head, an end of the spray pipe away from the rotating spray head is connected to an external water source, and a fifth electronic valve is provided on the spray pipe.

[0014] The beneficial effects of the utility model are as follows: the electronic liquid level gauge located in the water tank of the salt spray test box monitors the water level of the solution in the water tank in real time. When the water level is low, an alarm signal is sent to a handheld remote terminal or other equipment of a tester through a processing module and a wireless signal receiving and sending module. The tester can send the concentration and weight of the sodium chloride solution to be prepared to the processing module through the remote terminal, and then the processing module controls the injection of an appropriate amount of clean water and salt into the mixing tank. After sufficient stirring and dissolution, the solution is injected into the water tank for replenishment, thereby realizing the remote solution replenishment operation of the salt spray test box, and the solution can be automatically prepared for injection, thereby improving the replenishment efficiency of the sodium chloride solution in the salt spray test box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the salt spray test chamber of an embodiment of the present application.

[0016] Figure 2It is a schematic diagram of the partial cross-sectional structure of the matching tank according to an embodiment of the present application.

[0017] Figure 3 This is a logic control diagram of an embodiment of the present application.

[0018] Among them, 1. Test box body; 11. Manual water filling port; 2. Matching tank; 21. Water filling pipe; 22. First electronic valve; 23. Water inlet pipe; 231. Second electronic valve; 24. First gravity sensor; 25. Water outlet pipe; 251. Fourth electronic valve; 31. Rotating shaft; 32. Bracket; 33. Motor; 34. Stirring blade; 35. Planetary gear assembly; 4. Salt storage tank; 41. Third electronic valve; 42. Second gravity sensor; 5. Processing module; 6. Wireless signal receiving and sending module; 7. Electronic liquid level meter; 8. Rotating sprinkler head; 81. Sprinkler pipe; 82. Fifth electronic valve. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The present application embodiment discloses a remotely controllable salt spray test chamber, referring to Figure 1 and Figure 2 , including a test box body, a water tank (not shown in the figure) is arranged in the test box body, the water tank is used to store the prepared sodium chloride solution, and provide the sodium chloride solution for the salt spray test of the test box body, and a water injection port connected to the water tank is opened on the outer wall of the test box body, and a cover body is movably installed at the water injection port, through which the test personnel can manually inject the prepared sodium chloride solution into the water tank. A matching tank 2 is installed on the outside of the test box body 1, and the matching tank 2 is used to temporarily prepare the sodium chloride solution.

[0021] The top of the matching tank 2 is open, and a water inlet pipe 23 for connecting to an external water source is provided at the opening of the matching tank 2. A salt storage tank 4 is provided above the matching tank 2, and a salt outlet and a salt outlet pipe connected to the salt outlet are provided at the bottom of the salt storage tank 4, and the bottom of the salt outlet pipe is connected to the top opening of the matching tank 2. A stirring assembly is provided in the matching tank 2 to stir the clean water and salt injected into the matching tank 2, and the bottom of the matching tank 2 is connected to the water tank in the test box through a water injection pipe 21. In the embodiment of the present application, the matching tank 2 is higher than the water tank, so the solution in the matching tank 2 can flow freely into the water tank under the action of gravity. In other embodiments, a water pump can be installed on the water injection pipe 21 to pump the sodium chloride solution in the matching tank 2 into the water tank.

[0022] The water injection pipe 21 is connected to a first electronic valve 22, the water inlet pipe 23 is connected to a second electronic valve 231, and the salt outlet pipe at the bottom of the salt storage tank 4 is connected to a third electronic valve 41, and the electronic valves are respectively used to control the opening and closing of the pipeline channels in which they are located. The test box body 1 is provided with a first gravity sensor 24 for detecting the weight of the solution in the matching tank 2, and the salt storage tank 4 is provided with a second gravity sensor 42 for detecting the weight of the salt in the salt storage tank 4. The water injection pipe 21 can be a hose so that the matching tank 2 has a sedimentation margin.

[0023] When the sodium chloride solution is temporarily prepared, the first electronic valve 22 is closed, the second electronic valve 231 is opened, and clean water is injected into the preparation tank 2. The weight of the clean water in the preparation tank 2 is monitored in real time by the first gravity sensor 24. After an appropriate amount of clean water is injected, the second electronic valve 231 is closed, and the third electronic valve 41 is opened to inject salt into the preparation tank 2. According to the change data of the values ​​on the first gravity sensor 24 and the second gravity sensor 42, the weight of the salt injected into the preparation tank 2 is monitored in real time. When the mass ratio of the injected salt to the clean water reaches the required ratio, the third electronic valve 41 is closed, and the solution in the preparation tank 2 is stirred by the stirring component to completely dissolve the salt in the water. After stirring for a period of time, the first electronic valve 22 is opened to replenish the sodium chloride solution in the water tank. There is no need for the test personnel to manually stir and prepare the sodium chloride solution, which saves manpower and improves the efficiency of fluid replenishment.

[0024] In the embodiment of the present application, the stirring assembly includes at least a rotating shaft 31, and a plurality of stirring blades 34 are fixedly connected to the outer wall of the rotating shaft 31. The axis of the rotating shaft 31 is vertical. A bracket 32 ​​extends outward from the test box body 1. The top end of the rotating shaft 31 is rotatably connected to the bracket 32. The bracket 32 ​​is also provided with a motor 33 that is transmission-connected to the rotating shaft 31 for driving the rotating shaft 31 to rotate.

[0025] Further, a planetary gear assembly 35 is installed on the bracket 32, and the planetary gear assembly 35 includes a ring gear, a sun gear and a plurality of planetary gears. The ring gear is fixedly installed on the bracket 32, and the inner wall of the ring gear is set as a tooth surface. The ring gear is coaxial with the matching tank 2 and penetrates up and down. A plurality of planetary gears are evenly spaced and arranged in the ring gear along the circumference of the ring gear. The sun gear is located in the ring gear and is coaxial with the ring gear. The ring gear is meshed with all the planetary gears at the same time, and the sun gear is meshed with all the planetary gears at the same time. The motor 33 is fixedly installed on the bracket 32 ​​by any means such as bolt connection, riveting, welding, etc. The output shaft of the motor 33 is connected to the sun gear in a transmission manner, and the top of the rotating shaft 31 in the matching tank 2 is coaxially fixedly installed on any one of the planetary gears. When the motor 33 drives the sun gear to rotate, the planetary gear keeps rotating when rotating around the sun gear, so that when the solution in the matching tank 2 is stirred, the stirring center is constantly moved to avoid the salt particles from being concentrated at the center of the bottom of the matching tank 2, thereby improving the dissolution effect of the salt particles in the matching tank 2.

[0026] In the embodiment of the present application, a processing module 5 is also included, and the second electronic valve 231, the third electronic valve 41, the first gravity sensor 24 and the second gravity sensor 42 are all electrically connected to the processing module 5. The weight data and concentration data of the sodium chloride solution can be preset in the processing module 5, and an input module can also be added, and the test personnel can manually input the weight data and concentration data of the sodium chloride solution into the processing module 5. The processing module 5 can be an integrated PCB board inside the test box body 1, and the input module is an operation panel outside the test box body 1.

[0027] The processing module 5 can receive the weight data of the solution in the matching tank 2 detected by the first gravity sensor 24 and the weight data of the salt in the salt storage tank 4 detected by the second gravity sensor 42, and according to the set weight data and concentration data of the sodium chloride solution, the internal algorithm is run to calculate that the weight of the solution in the matching tank 2 after complete mixing and the concentration of sodium chloride in the solution meet the set weight data and concentration data of the sodium chloride solution, and the weight of the clean water and the weight of the salt are required. Based on this, the second electronic valve 231 is controlled to open until the weight data of the solution in the matching tank 2 detected by the first gravity sensor 24 meets the calculated required weight of the clean water and closes, and then the third electronic valve 41 is controlled to open until the absolute value of the change in the weight data of the salt in the salt storage tank 4 detected by the second gravity sensor 42 meets the calculated required weight of the salt and closes. The purpose of automatically mixing and stirring to obtain the sodium chloride solution is achieved, and the efficiency of mixing the sodium chloride solution is improved.

[0028] Furthermore, a wireless signal receiving and sending module 6 can be integrated on the integrated PCB board, and the wireless signal receiving and sending module 6 is electrically connected to the processing module 5. An electronic liquid level meter 7 is arranged in the water tank, and the electronic liquid level meter 7 monitors the liquid level in the water tank in real time, and sends a real-time water level signal to the remote terminal of the test personnel through the wireless signal receiving and sending module 6. The remote terminal can be a mobile phone of the test personnel, and the water level information in the water tank of the salt spray test box is received in real time through the APP on the mobile phone, and an alarm can be sent to the mobile phone when the water level in the water tank is low. At the same time, the weight data and concentration data of the sodium chloride solution can be input into the processing module 5 through the remote terminal. In other embodiments, the remote terminal can also be a computer or other intelligent device.

[0029] The motor 33 on the test box body 1 and the first electronic valve 22 on the water injection pipe 21 are both electrically connected to the processing module 5. The processing module 5 can control the motor 33 to start, and after the motor 33 drives the mixed solution in the mixing tank 2 to stir for a period of time, the first electronic valve 22 is controlled to open with a delay, so as to add the sodium chloride solution prepared in the mixing tank 2 into the water tank. Therefore, the test personnel can operate remotely on a remote terminal device such as a mobile phone, and the salt spray test box can prepare a suitable sodium chloride solution according to the weight data and concentration data of the sodium chloride solution input by the remote operation, and add the sodium chloride solution to the water tank in the salt spray test box, thereby improving the automation of the salt spray test box.

[0030] Furthermore, a water outlet pipe 25 is connected near the bottom of the matching tank 2, and a fourth electronic valve 251 for controlling the opening and closing of the water outlet pipe 25 is installed on the water outlet pipe 25. The end of the water outlet pipe 25 away from the matching tank 2 is connected to a drainage channel such as a sewer. A rotating spray head 8 is installed on the top of the matching tank 2, and the water inlet end of the rotating spray head 8 is connected to a spray pipe 81. The end of the spray pipe 81 away from the rotating spray head 8 is connected to a water source, which can be a tap water pipe. The spray pipe 81 is installed with a fifth electronic valve 82 for controlling the opening and closing of the spray pipe 81. The rotating spray head 8 is installed with a plurality of spray heads arranged at intervals along the circumferential direction of its own rotation, and the water outlet center line of the spray head is staggered with the rotation axis of the rotating spray head 8. By setting the rotating spray head 8, after the fifth electronic valve 82 is opened, the rotating spray head 8 rotates itself during the spraying process of the inner wall of the matching tank 2, so as to achieve full coverage spraying of the inner wall of the matching tank 2. During the spraying process, the clean water dissolves the salt scale left after the residual water stains attached to the inner wall of the mixing tank 2 are dried, and is discharged after opening the fourth electronic valve 251, thereby improving the concentration accuracy of the mixing solution when the sodium chloride solution is automatically mixed next time.

[0031] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A remotely controllable salt spray test chamber, comprising a test chamber body (1), wherein a water tank is arranged in the test chamber body (1), and a manual water injection port (11) connected to the water tank is arranged at the top of the test chamber body (1), characterized in that: A mixing tank (2) is also arranged on the outside of the test box body (1). A water injection pipe (21) is connected to the bottom of the mixing tank (2). The water injection pipe (21) is communicated with a water tank. A first electronic valve (22) is arranged on the water injection pipe (21). A stirring assembly is arranged in the mixing tank (2). The top of the mixing tank (2) is open. A water inlet pipe (23) is arranged above the opening of the mixing tank (2). The water inlet pipe (23) is connected to an external water source. A second electronic valve (231) is arranged on the water inlet pipe (23). A salt storage tank (4) is also arranged above the mixing tank (2). A salt outlet whose opening and closing is controlled by a third electronic valve (41) is arranged at the bottom of the salt storage tank (4). A first gravity sensor (24) for detecting the weight of a solution in the mixing tank (2) is arranged on the test box body (1). A second gravity sensor (42) for detecting the weight of salt in the salt storage tank (4) is arranged in the salt storage tank (4).

2. A remotely controllable salt spray test chamber according to claim 1, characterized in that: The stirring assembly comprises a rotating shaft (31) vertically arranged in the mixing tank (2); a bracket (32) is arranged on the test box body (1); the top end of the rotating shaft (31) is rotatably connected to the bracket (32); a motor (33) for driving the rotating shaft (31) to rotate is arranged on the bracket (32); and a plurality of stirring blades (34) are fixedly arranged on the side wall of the rotating shaft (31).

3. A remotely controllable salt spray test chamber according to claim 2, characterized in that: A planetary gear assembly (35) is arranged on the bracket (32), and the planetary gear assembly (35) comprises a sun gear and a plurality of planetary gears. The motor (33) is drivingly connected to the sun gear and is used to drive the sun gear to rotate. The top end of the rotating shaft (31) is fixedly connected to any one of the planetary gears.

4. A remotely controllable salt spray test chamber according to claim 2, characterized in that: It also includes a processing module (5), wherein the second electronic valve (231), the third electronic valve (41), the first gravity sensor (24) and the second gravity sensor (42) are all electrically connected to the processing module (5); The processing module (5) controls the opening time of the second electronic valve (231) and the third electronic valve (41) based on the input weight data and concentration data of the sodium chloride solution, the weight data of the solution in the mixing tank (2) detected by the first gravity sensor (24), and the weight data of the salt in the salt storage tank (4) detected by the second gravity sensor (42).

5. A remotely controllable salt spray test chamber according to claim 4, characterized in that: The apparatus further comprises a wireless signal receiving and transmitting module (6), wherein the wireless signal receiving and transmitting module (6) is electrically connected to the processing module (5); an electronic liquid level meter (7) is arranged in the water tank; the electronic liquid level meter (7), the motor (33) and the first electronic valve (22) are all electrically connected to the processing module (5); the wireless signal receiving and transmitting module (6) receives a signal from a remote terminal of an experimenter, and outputs weight data and concentration data of the sodium chloride solution to the processing module (5); the electronic liquid level meter (7) monitors the liquid level in the water tank in real time, and sends a real-time water level signal to the remote terminal of the experimenter through the wireless signal receiving and transmitting module (6); The processing module (5) controls the motor (33) to start and then delays the control of the first electronic valve (22) to open.

6. A remotely controllable salt spray test chamber according to any one of claims 1 to 5, characterized in that: The matching tank (2) is connected to a water outlet pipe (25), and a fourth electronic valve (251) is arranged on the water outlet pipe (25). A rotating spray head (8) is arranged on the top of the matching tank (2) extending downward, and a spray pipe (81) is connected to the water inlet end of the rotating spray head (8). An end of the spray pipe (81) away from the rotating spray head (8) is connected to an external water source, and a fifth electronic valve (82) is arranged on the spray pipe (81).

Images