Automatic maintenance device capable of being used for testing freeze-thaw bonding strength

Abstract

The utility model discloses an automatic maintenance device capable of being used for testing freeze-thaw bonding strength. The automatic maintenance device comprises a program test box, an experiment box placed in the program test box, an automatic control module, a water pump and an electromagnetic valve, and the water pump and the electromagnetic valve are respectively communicated with the automatic control module. According to the automatic maintenance device capable of being used for the freeze-thaw bonding strength test, the automatic control device is linked with the program type test box, experiment content and parameters are set in advance, an automatic instrument is used for controlling experiment conditions, the effect of automatically controlling the test process is achieved, the purpose of automatic maintenance is achieved, and manual intervention is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to water -based building coating testing arrangement technical field, especially relates to a kind of automatic curing device for freeze-thaw adhesion strength test. BACKGROUND

[0002] At present, in the field of water-based building coating, it involves external wall sand wall coating, and there is a test requirement of freeze-thaw adhesion strength in JG / T 24-2018 standard, which involves a wide temperature range, usually needs manual operation, cannot achieve automatic control of equipment, and the test precision cannot be guaranteed in the process of manual operation.

[0003] Specific experimental method is as follows:

[0004] 1. Experimental standard: according to JG / T 24-2018 standard, curing method: 23 DEG C water immersion for 18 hours, -20 DEG C freezing for 3 hours, 50 DEG C baking for 3 hours for one cycle, and a total of 5 cycles are tested.

[0005] 2. Experimental instrument: low-temperature curing box (-20 DEG C), normal-temperature curing box (23 DEG C) and high-temperature oven (50 DEG C).

[0006] 3. Test method: after 14 days of curing according to the standard, the sample is placed in 23 DEG C water for 18 hours, the water level during curing should not be lower than 22 mm, and after the soaking time, it is transferred to the low-temperature curing box -20 DEG C for 3 hours, and then it is transferred to the high-temperature oven 50 DEG C for 3 hours for one cycle, and a total of 5 cycles are tested.

[0007] The existing test scheme needs manual operation, the steps are complicated, the variable control in the test process is not accurate, the actual test data fluctuates greatly, the test process occupies many devices, the utilization rate of the devices is low, there is no similar automatic test equipment in the market, and in the coating industry, this test project is a routine detection item. UTILITY MODEL CONTENT

[0008] The utility model aims at the problem that the existing freeze-thaw adhesion strength test method cannot realize automatic control, and provides an automatic curing device for freeze-thaw adhesion strength test (especially water-based sand wall coating freeze-thaw adhesion strength test), which is connected with a programmed test box through an automatic control device, sets the experimental content and parameters in advance, controls the experimental conditions using automatic instruments, achieves the effect of automatic control of the test process, achieves the purpose of automatic curing, and does not need manual intervention.

[0009] To solve the above problems, the utility model realizes the following technical scheme:

[0010] An automatic curing device for freeze-thaw bonding strength test comprises a program test box, an experimental box placed in the program test box, an automatic control module, a water pump and a solenoid valve.

[0011] The program test box sets the test temperature range and test duration through a preset module.

[0012] The program test box is produced by Chengdu Qiyuntong Instrument Co., Ltd., and the instrument structure comprises a central controller (temperature and humidity sensing and adjusting, temperature cycle test according to preset parameters), a compressor (responsible for refrigeration for low-temperature test), a heating pipe (responsible for heating), a humidifier (responsible for adjusting humidity), a temperature sensor (responsible for detecting test environment temperature), a humidity sensor (responsible for detecting test environment humidity), a water tank and an air blower (maintaining balanced temperature and humidity in the test environment).

[0013] The experimental box comprises two parts: an upper test box and a lower water storage tank.

[0014] An overflow port is arranged on the upper part of the side surface of the test box, and a water pump water inlet is arranged on the lower part of the side surface of the test box; a drain port is arranged on the bottom of the test box and controlled by a solenoid valve.

[0015] The automatic control module comprises a timer, a temperature sensor and a power supply control module.

[0016] The water pump is communicated with the automatic control module and is started at regular time intervals by the automatic control module to convey the test water in the water storage tank to the test box, thereby achieving water replenishment control of the test box.

[0017] The solenoid valve is communicated with the automatic control module and is controlled to be opened by the automatic control module according to the signal of the temperature sensor; the solenoid valve is kept in a normally closed state when the set temperature requirement is met, and is controlled to be opened by the automatic control module to meet the set temperature requirement.

[0018] Further optimization of the automatic curing device for freeze-thaw bonding strength test is as follows:

[0019] The overflow port on the side surface of the test box controls the liquid level of the test box to be 22 mm high.

[0020] Further optimization of the automatic curing device for freeze-thaw bonding strength test is as follows:

[0021] A baffle parallel to the side surface of the test box is fixed beside the overflow port in the test box, and the distance between the baffle and the side surface of the test box is 2 cm.

[0022] The water pump water inlet is located in the region formed by the gap between the baffle and the side surface of the test box.

[0023] The gap formed by the baffle and the side of the test box is used as a water pump water inlet to prevent excessive liquid level fluctuation during water supplement.

[0024] Further optimization of the automatic curing device for freeze-thaw bonding strength test is:

[0025] The width of the baffle is half of the width of the test box, and the height of the baffle is consistent with the height of the test box.

[0026] Further optimization of the automatic curing device for freeze-thaw bonding strength test is:

[0027] The input voltage of the power control module is 220V, and the output voltage is 24V.

[0028] The water pump and the electromagnetic valve are respectively communicated with the automatic control module, and are powered by the power control module, and the power supply voltage is 24V.

[0029] Further optimization of the automatic curing device for freeze-thaw bonding strength test is:

[0030] The test box and the water storage tank in the test box need to be filled with water to the standard liquid level before testing.

[0031] Further optimization of the automatic curing device for freeze-thaw bonding strength test is:

[0032] The program test box sets the test temperature range and the test duration through a preset module.

[0033] The preset cycle is:

[0034] Test temperature 1: 23℃, test duration: 18 hours;

[0035] Test temperature 2: -20℃, test duration: 3 hours;

[0036] Test temperature 3: 50℃, test duration: 3 hours;

[0037] A total of 5 cycles.

[0038] Further optimization of the automatic curing device for freeze-thaw bonding strength test is:

[0039] The automatic control module operates the pre-set water pump automatic start and duration according to the temperature and duration sensed by the temperature sensor through a preset module, and controls the opening and closing of the electromagnetic valve according to the preset:

[0040] The preset is:

[0041] When the temperature reaches 23℃ and the duration reaches 5 minutes, the water pump is automatically started once every 3 hours, and the duration is 3 minutes.

[0042] When the temperature reaches 23℃ and the duration reaches 5 minutes, the electromagnetic valve remains normally closed, the water surface liquid level is controlled at 22mm, and the electromagnetic valve remains normally open in the remaining temperature interval.

[0043] The purpose of this parameter operation is to control the water surface liquid level at 22mm when the temperature is at 23℃, and the test sample is soaked for 18h.

[0044] The automatic curing device for freeze-thaw bonding strength test has the following characteristics and advantages:

[0045] 1. The curing process precisely controls the normal temperature water immersion liquid level, and the water can be automatically replenished after the water level drops, preventing the immersion time from being insufficient due to the decrease of the liquid level caused by water evaporation.

[0046] 2. When receiving the temperature change of the program test box, the timer and temperature sensor on the automatic control module control the experimental conditions under different experimental temperatures to achieve the purpose of automatic control. The automatic control module and the program test box are provided with a locking device, which automatically replenishes water after baking, realizes automatic control of the whole process by the equipment, and does not need manual intervention.

[0047] 3. The automatic curing device for freeze-thaw bonding strength test can save manpower and equipment. The original test scheme requires three devices, i.e. a normal temperature curing box, a low temperature curing box and an oven, to be used at the same time. Through the device, all projects can be completed by only one program curing box. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is a whole structure schematic view of the automatic curing device for freeze-thaw bonding strength test.

[0049] The figure mark is explained as follows:

[0050] 1-Program test box, 2-Test box, 3-Automatic control module, 4-Water pump, 5-Electromagnetic valve, 6-Water storage tank. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model content is described in detail below combined with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not limited to the utility model. Any simple improvement of the utility model under the premise of the utility model concept belongs to the protection range of the utility model.

[0052] Example 1

[0053] An automatic curing device for freeze-thaw bonding strength test, comprising: a programmed test box 1, an experimental box placed in the programmed test box 1, an automatic control module 3, a water pump 4 and a solenoid valve 5;

[0054] The programmed test box 1 sets the test temperature range and test duration through a preset module;

[0055] The experimental box comprises two parts: an upper part, i.e. a test box 2, and a lower part, i.e. a water storage tank 6, which stores test water;

[0056] The test box 2 is provided with an overflow port on the upper part of the side surface and a water pump water inlet on the lower part; the bottom of the test box 2 is provided with a drain port controlled by the solenoid valve 5;

[0057] The automatic control module 3 comprises a timer, a temperature sensor and a power supply control module;

[0058] The water pump 4 and the solenoid valve 5 are respectively in communication with the automatic control module 3;

[0059] The water pump 4 is in communication with the automatic control module 3 and is started by the automatic control module 3 at regular intervals to convey the test water in the water storage tank 6 to the test box 2, thereby achieving the control of water replenishment of the test box 2;

[0060] The solenoid valve 5 is in communication with the automatic control module 3 and is controlled by the automatic control module 3 to open according to the signal of the temperature sensor; the solenoid valve 5 is kept in a normally closed state when the set temperature requirement is met and is controlled by the automatic control module 3 to open to meet the set temperature requirement.

[0061] The overflow port on the side surface of the test box 2 controls the liquid level of the test box 2 to be 22mm high.

[0062] A baffle parallel to the side surface of the test box 2 is fixed beside the overflow port in the test box 2, and the distance between the baffle and the side surface of the test box 2 is 2cm;

[0063] The water pump water inlet is located in the gap between the baffle and the side surface of the test box;

[0064] The width of the baffle is half of the width of the test box, and the height of the baffle is consistent with the height of the test box.

[0065] The input voltage of the power supply control module is 220V, and the output voltage is 24V;

[0066] The water pump 4 and the solenoid valve 5 are respectively in communication with the automatic control module 3 and are powered by the power supply control module, and the power supply voltage is 24V.

[0067] The test tank 2 and the water storage tank 6 in the experimental box need to be filled with water to a standard liquid level before testing.

[0068] The preset cycle of the test temperature of the program test box 1 is: 23 DEG C for 18 hours, cooling to -20 DEG C for 3 hours, heating to 50 DEG C for 3 hours for one cycle, and a total of 5 cycles.

[0069] The automatic control module 3 operates according to the temperature sensed by the temperature sensor as follows:

[0070] When the temperature reaches 23 DEG C and remains for 5 minutes, the water pump 4 is automatically started once every 3 hours and remains for 3 minutes;

[0071] When the temperature reaches 23 DEG C and remains for 5 minutes, the electromagnetic valve 5 remains normally closed, and the water surface liquid level is controlled at 22 mm, and the electromagnetic valve 5 remains normally open in the remaining temperature range.

[0072] In summary, only the preferred examples of the present application are described, and the application is not limited in any way; any minor changes, modifications and equivalent changes made by those skilled in the art without departing from the technical scheme of the application, using the disclosed technical content, are considered equivalent examples of the application; at the same time, any equivalent changes, modifications and evolution of the above examples according to the essence of the application are still within the protection scope of the technical scheme of the application.

[0073] The position in the technical scheme of the application is described as above, below, left, right, etc., only for clear description of the connection mode of the corresponding structure, and is not limited as the specific actual position, and the design under the condition of the same or similar structure, connection mode and principle is still within the protection scope of the technical scheme of the application.

[0074] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the description.

[0075] Unless otherwise stated, the various optimization technical schemes in the application can be combined with each other.

[0076] Unless otherwise defined, all professional and scientific terms used in the application have the same meaning as familiar to those skilled in the art. In addition, any method and material similar or equivalent to the described content can be applied in the application.

Claims

1. An automatic curing device for freeze-thaw bond strength test, characterized in that: it comprises a program test box, an experimental box placed in the program test box, an automatic control module, a water pump and a solenoid valve; the program test box sets the test temperature range and test duration through a preset module; the experimental box comprises upper and lower parts: the upper part is a test box, and the lower part is a water storage tank for storing test water; the test box is provided with an overflow port on the upper part of the side surface, and a water pump water inlet is arranged on the lower part of the side surface; the bottom of the test box is provided with a drain port controlled by a solenoid valve; the automatic control module comprises a timer, a temperature sensor and a power supply control module; the water pump and the solenoid valve are respectively communicated with the automatic control module; the water pump is communicated with the automatic control module and is started by the automatic control module at regular intervals to transport the test water in the water storage tank to the test box, thereby controlling the water replenishment of the test box; the solenoid valve is communicated with the automatic control module and is controlled to be opened by the automatic control module according to the signal of the temperature sensor; the solenoid valve is kept in a normally closed state when the set temperature requirement is met, and is controlled to be opened by the automatic control module to meet the set temperature requirement.

2. The automatic curing device for freeze-thaw bond strength test according to claim 1, characterized in that: the overflow port on the side surface of the test box controls the liquid level of the test box to be 22 mm high.

3. The automatic curing device for freeze-thaw bond strength test according to claim 2, characterized in that: a baffle parallel to the side surface of the test box is fixed beside the overflow port in the test box, and the distance between the baffle and the side surface of the test box is 2 cm; the water pump water inlet is located in the gap between the baffle and the side surface of the test box.

4. The automatic curing device for freeze-thaw bond strength test according to claim 3, characterized in that: the width of the baffle is half of the width of the test box, and the height of the baffle is consistent with the height of the test box.

5. The automatic curing device for freeze-thaw bond strength test according to claim 1, characterized in that: the input voltage of the power supply control module is 220V, and the output voltage is 24V; the water pump and the solenoid valve are respectively communicated with the automatic control module and are powered by the power supply control module, and the power supply voltage is 24V.

6. The automatic curing device for freeze-thaw bond strength test according to claim 1, characterized in that: the test box and the water storage tank in the experimental box need to be filled with water to the standard liquid level before testing.

7. The automatic curing device for freeze-thaw bond strength test according to claim 1, characterized in that: the program test box sets the test temperature range and test duration through a preset module; the preset cycle is as follows: test temperature 1: 23℃, test duration: 18 hours; test temperature 2: -20℃, test duration: 3 hours; test temperature 3: 50℃, test duration: 3 hours; a total of 5 cycles.

8. The automatic curing device for freeze-thaw bond strength test according to claim 1, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The automatic control module automatically starts and controls the duration of the water pump according to the temperature and duration sensed by the temperature sensor and the preset duration, and opens and closes the electromagnetic valve according to the preset control. The preset is as follows: When the temperature reaches 23 DEG C and the duration reaches 5 minutes, the water pump is automatically started once every 3 hours for 3 minutes; When the temperature reaches 23 DEG C and the duration reaches 5 minutes, the electromagnetic valve is kept closed, the water level is controlled at 22 mm, and the electromagnetic valve is kept open in the remaining temperature interval.

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