Bathtub comprehensive performance detection platform

Abstract

The utility model discloses a bathtub comprehensive performance detection platform, which comprises a first hot water tank, a second hot water tank and a cold water tank, and is characterized in that the first hot water tank, the second hot water tank and the cold water tank are respectively provided with an overflow port, a water inlet, a water outlet and a water return port; water outlets of the first hot water tank and the second hot water tank are connected with a water inlet of a tested bathtub through a hot water pump and a bathtub water inlet pipeline, the cold water tank is connected with the water inlet of the tested bathtub through a cold water pump and a bathtub water inlet pipeline, and a water outlet of the tested bathtub is connected with a water inlet of the water return tank. A water outlet of the water return tank is connected to water return ports of the first hot water tank, the second hot water tank and the cold water tank through a water return circulating pump; the tested bathtub is externally connected with a bathtub circulating pump and a pipeline heater and is used for heating hot water in the tested bathtub; the cold water tank is externally connected with a refrigerating machine circulating pump and a refrigerating machine and used for cooling water in the cold water tank. The utility model has the advantages that various test water temperature requirements are met by adopting a multi-water-tank simultaneous temperature control and auxiliary heating circulating system; retention water detection can be completed at the same time; and the detection precision is high.

Description

Technical Field

[0001] The utility model relates to a comprehensive bathtub detection performance platform, and particularly to its water circuit system. Background Art

[0002] There are many classifications of bathtub materials, including wooden, cast iron, steel plate, ceramic and acrylic. Among them, acrylic bathtubs are the mainstream at present due to their advantages of simple molding and high heat preservation. However, acrylic bathtubs also have their disadvantages, such as being prone to deformation and having poor hot water resistance. The current hot water resistance detection devices for bathtubs have relatively single functions and lack temperature control, water level control and automatic safety protection devices. Content of the Utility Model

[0003] Aiming at the disadvantages of the existing technical methods, the utility model provides a comprehensive bathtub detection performance platform, which can perform various functional detections on the bathtub.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: a comprehensive bathtub detection performance platform, including a first hot water tank, a second hot water tank and a cold water tank, characterized in that the first hot water tank, the second hot water tank and the cold water tank are all provided with an overflow port, a water inlet, a water outlet and a water return port. The water outlets of the first hot water tank and the second hot water tank are respectively connected to the water inlet of the bathtub to be tested through a hot water pump and a bathtub water inlet pipe. The cold water tank is connected to the water inlet of the bathtub to be tested through a cold water pump and a bathtub water inlet pipe. The water outlet of the bathtub to be tested is connected to the water inlet of the water return tank, and the water outlet of the water return tank is connected to the water return ports of the first hot water tank, the second hot water tank and the cold water tank through a water return circulation pump; a bathtub circulation pump and a pipeline heater are externally connected to the bathtub to be tested for heating the hot water in the bathtub to be tested; a thermocouple is arranged inside the bathtub to be tested for measuring the water temperature in the bathtub to be tested; a refrigeration machine circulation pump and a refrigeration machine are externally connected to the cold water tank for cooling the water in the cold water tank.

[0005] Further, the first hot water tank is a 75°C water tank, the second hot water tank is an 80 / 90°C water tank, and the cold water tank is a 12°C water tank.

[0006] Further, water inlet valves are arranged at the water inlets of the first hot water tank, the second hot water tank and the cold water tank, water outlet valves and filters are arranged at the water outlets, and water return valves are arranged at the water return ports.

[0007] Further, a thermometer, a pressure gauge and a flow meter are arranged on the bathtub water inlet pipe.

[0008] Further, several laser displacement sensors are arranged around the bathtub, and an ultrasonic liquid level sensor is arranged inside the bathtub.

[0009] The utility model can respectively complete the heat resistance performance, full water deformation and temperature change resistance performance experiments of the bathtub by setting a first hot water tank, a second hot water tank and a cold water tank. At the same time, by setting a plurality of laser displacement sensors to measure the deformation amount during full water deformation, the accuracy of bathtub deformation is improved. The advantages of the utility model are that it adopts a multi-water tank simultaneous temperature control and auxiliary heating circulation system to meet various test water temperature requirements; it can simultaneously complete the stagnant water detection; and the detection accuracy is high. Brief Description of the Drawings

[0010] Figure 1 It is the pipeline connection diagram of the utility model;

[0011] Figure 2 It is the structural schematic diagram of the utility model.

[0012] Among them, 1 is the bathtub to be tested, 2 is the first hot water tank, 3 is the second hot water tank, 4 is the cold water tank, 5 is the overflow port, 6 is the hot water pump, 7 is the cold water pump, 8 is the return water tank, 9 is the return water circulation pump, 10 is the bathtub circulation pump, 11 is the pipeline heater, 12 is the refrigeration machine circulation pump, 13 is the refrigeration machine, 14 is the inlet valve, 15 is the outlet valve, 16 is the filter, 17 is the return water valve, 18 is the thermometer, 19 is the pressure gauge, 20 is the flowmeter, 21 is the laser displacement sensor, 22 is the ultrasonic liquid level sensor, 23 is the refrigeration machine inlet valve, 24 is the refrigeration machine outlet valve, 25 is the bathtub inlet valve, and 26 is the thermocouple. Detailed Embodiment

[0013] The following combines the drawings and examples to make a detailed description of the utility model. It should be noted here that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation to the utility model. In addition, the technical features involved in the various embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] The utility model is a comprehensive bathtub performance detection platform, which includes a first hot water tank 2, a second hot water tank 3 and a cold water tank 4. It is characterized in that the first hot water tank 2, the second hot water tank 3 and the cold water tank 4 are all provided with an overflow port 5, a water inlet, a water outlet and a water return port. The water outlets of the first hot water tank 2 and the second hot water tank 3 are both connected to the water inlet of the bathtub under test 1 through a hot water pump 6 and a bathtub water inlet pipe. The cold water tank 4 is connected to the water inlet of the bathtub under test 1 through a cold water pump 7 and a bathtub water inlet pipe. The water outlet of the bathtub under test 1 is connected to the water inlet of a return water tank 8. The water outlet of the return water tank 8 is connected to the water return ports of the first hot water tank 2, the second hot water tank 3 and the cold water tank 4 through a water return circulation pump 9. The bathtub under test 1 is externally connected with a bathtub circulation pump 10 and a pipeline heater 11 for heating the hot water in the bathtub under test. A thermocouple 26 is arranged inside the bathtub under test for measuring the water temperature in the bathtub under test. The cold water tank 4 is externally connected with a refrigeration machine circulation pump 12 and a refrigeration machine 13 for cooling the water in the cold water tank.

[0015] The first hot water tank 2 is a 75°C water tank, the second hot water tank 3 is an 80 / 90°C water tank, and the cold water tank 4 is a 12°C water tank.

[0016] Water inlet valves 14 are arranged at the water inlets of the first hot water tank 2, the second hot water tank 3 and the cold water tank 4. Water outlet valves 15 and filters 16 are arranged at the water outlets, and water return valves 17 are arranged at the water return ports.

[0017] A thermometer 18, a pressure gauge 19 and a flow meter 20 are arranged on the bathtub water inlet pipe.

[0018] A plurality of laser displacement sensors 21 are arranged around the bathtub, and an ultrasonic liquid level sensor 22 is arranged inside the bathtub.

[0019] A refrigeration machine water inlet valve 23 is arranged at the water inlet of the refrigeration machine 13, and a refrigeration machine water outlet valve 24 is arranged at the water outlet.

[0020] A water outlet valve 25 is further arranged on the bathtub water inlet pipe.

[0021] Cylinders are arranged on the four sides of the bottom of the bathtub under test to lift the four sides of the bathtub bottom, so that the upper plane of the bathtub tilts in four directions of front, back, left and right respectively, allowing the stagnant water in the pipeline to all flow to the bottom of the bathtub.

[0022] Thermocouples are arranged inside the cold water tank, the first hot water tank and the second hot water tank for temperature detection.

[0023] In this embodiment, the bathtub under test is an acrylic bathtub.

[0024] Cooling of the 12°C water tank (cold water tank 4):

[0025] When the water level in the water tank is lower than the lower limit, the water inlet valve 14 opens for water replenishment; when the water level reaches the upper limit, the water inlet valve 14 closes.

[0026] The return water of the return water tank 8 is pumped to the cold water tank for recycling through the return water circulation pump 9 and the cold water tank return water valve 17. When the thermocouple in the cold water tank (the thermocouple set in the cold water tank) detects that the water tank temperature is higher than the set temperature, the refrigerator circulation pump 12 and the refrigerator inlet valve 23 send water to the refrigerator 13 for cooling. After the temperature reaches the standard, it stops and then enters the cold water tank 4 through the refrigerator outlet valve 24 to maintain at 12°C.

[0027] Heating of the first hot water tank 2 and the second hot water tank 3: When the water tank liquid level is lower than the lower limit, the inlet valve 14 opens for water replenishment, and closes when the liquid level reaches the upper limit.

[0028] The return water of the return water tank is pumped by the return water circulation pump 9 through the return water valves 17 of the first hot water tank 2 and the second hot water tank 3 to the first hot water tank 2 and the second hot water tank 3 for circulation. When the thermocouple 26 in the bathtub detects that the water temperature in the bathtub is lower than the set temperature, the heating tube starts and stops after the temperature reaches the standard.

[0029] Heat resistance test: The 75°C water in the first hot water tank 2 is pumped into the bathtub 1 to be tested through the opened bathtub inlet valve 25 by opening the outlet valve 15 of the first hot water tank 2 until it is more than 80% of the bathtub depth (collected by the ultrasonic liquid level sensor 22).

[0030] Acrylic bathtub: Heated by the pipeline heating tube 11. When the water temperature rises to 80°C, the bathtub circulation pump 10 starts to keep the bathtub water temperature within the set temperature range and boil for 100h. At the same time, appropriately replenish water to keep the liquid level (collected by the ultrasonic liquid level sensor 22) above 80%. After the water boiling ends, open the drain valve to drain the water into the return water tank 8, and enter the first hot water tank 2, the second hot water tank 3 and the cold water tank 4 through the return water circulation pump 9 and the opened water tank return water valve 17 for reuse. Place the bathtub at room temperature and check for obvious damage marks, discoloration, fading and surface performance defects.

[0031] Full water deformation test: The 12°C water in the cold water tank 6 is pumped into the bathtub 1 to be tested through the opened bathtub inlet valve 25 by opening the outlet valve 15 of the cold water tank until it reaches the liquid level high limit (simulated quantity collected by the ultrasonic liquid level sensor 22), and keep it for 3 minutes. Measure the deflection of the bottom drain port and the absolute value of the deflection of 4 points at the horizontal center of the upper edge surface (simulated quantity collected by the laser displacement sensor 21). At the same time, the flowmeter 20 detects the water supply flow, the pressure gauge 19 detects the water supply pressure, and the thermometer 18 detects the water supply temperature.

[0032] Thermal change resistance experiment: Open the drain of the bathtub, and inject water at 90°C in the second hot water tank 3 through the water outlet valve 15 of the second hot water tank 3 to impact the bathtub edge closest to the drain. The water temperature is controlled at 90°C ± 2°C (collected by the thermocouple in the bathtub), the flow rate is 0.32 L / s ± 0.032 L / s, and 50 L ± 1 L of water is injected (detected by the flow meter 20 and the pressure gauge 19). Close the drain of the bathtub, open the cold water tank outlet valve 15, start the cold water pump, and immediately inject 100 L ± 2 L of water at 12°C ± 3°C from the same pipeline at the same flow rate. After maintaining for 10 minutes, drain the water. Close the drain of the bathtub, open the first hot water tank outlet valve, pump the water at 75°C ± 2°C in the first hot water tank 2 into the bathtub to be tested. The flow rate is 0.32 L / s ± 0.032 L / s, and the water level is at least 250 mm higher than the drain. After maintaining for 10 minutes, drain the water. Close the drain and the cold water tank outlet valve 15, start the cold water pump, and immediately inject the same flow rate and the same volume of water at 12°C ± 3°C from the same pipeline. After maintaining for 10 minutes, drain the water. The above is one cycle, and it is repeated 100 cycles continuously. After the experiment, smear 100 g / L eosin with 1 cm³ / L detergent on the surface of the bathtub with a sponge or a paintbrush, keep it for 5 minutes, then wipe it with a wet cloth, and observe whether there are any adverse changes or traces of eosin.

[0033] Stagnant water experiment: Level the bathtub, and the cold water pump 7 injects water into the bathtub until it overflows. Calculate the bathtub capacity through the injection flow rate (flow meter 20) and the injection time. Start the bathtub circulation pump 10 and run it for at least 30 minutes. After the water surface is stationary, drain all the water in the bathtub naturally from the drain, close the drain, and ensure that there is no leakage at the drain. Pad the four sides of the bathtub bottom respectively (through the cylinder) so that the upper plane of the bathtub tilts no less than 30° in the front, back, left, and right directions respectively, so that all the stagnant water in the pipeline flows to the bathtub bottom. Use absorbent material to absorb the flowing water, fully squeeze it into a measuring cup, and the difference between the initial weight of the absorbent material and the weight after collecting the stagnant water is recorded as the weight of the stagnant water. Calculate the cumulative weight of the stagnant water by the weighing method. For samples with stagnant water greater than 400 g, compare them after converting 0.2% of the bathtub capacity according to the water density of 1.0 kg / L.

[0034] The above only shows one implementation mode of the present utility model, and its description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A comprehensive bathtub detection performance platform, including a first hot water tank, a second hot water tank and a cold water tank, characterized in that, The first hot water tank, the second hot water tank and the cold water tank are all provided with an overflow port, a water inlet, a water outlet and a water return port. The water outlets of the first hot water tank and the second hot water tank are both connected to the water inlet of the bathtub under test through a hot water pump and a bathtub water inlet pipeline. The cold water tank is connected to the water inlet of the bathtub under test through a cold water pump and a bathtub water inlet pipeline. The water outlet of the bathtub under test is connected to the water inlet of the water return tank. The water outlet of the water return tank is connected to the water return ports of the first hot water tank, the second hot water tank and the cold water tank through a water return circulation pump; the bathtub under test is externally connected with a bathtub circulation pump and a pipeline heater for heating the hot water in the bathtub under test; the cold water tank is externally connected with a refrigeration machine circulation pump and a refrigeration machine for cooling the water in the cold water tank.

2. The integrated bathtub performance detection platform according to claim 1, wherein Water inlet valves are provided at the water inlets of the first hot water tank, the second hot water tank and the cold water tank. Water outlet valves and filters are provided at the water outlets. Water return valves are provided at the water return ports.

3. The integrated bathtub performance detection platform according to claim 1, characterized in that A thermometer, a pressure gauge and a flowmeter are provided on the bathtub water inlet pipeline.

4. The comprehensive bathtub detection performance platform according to claim 1, wherein A number of laser displacement sensors are provided around the bathtub.

5. The integrated bathtub performance detection platform according to claim 1, wherein An ultrasonic liquid level sensor is provided inside the bathtub.

6. The bathtub comprehensive detection performance platform according to claim 1, characterized in that Cylinders are provided at the four sides of the bottom of the bathtub under test.

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