A heat resistance tester and heat resistance test method for plastic bathtub products

Abstract

The present invention discloses a temperature resistance tester for plastic bathtub products, comprising a steam supply device, a temperature resistance test mechanism, a circulating water supply device and a control mechanism; the steam supply device is connected to the circulating water supply device through a water pipe, and is connected to the temperature resistance test mechanism through a steam delivery pipe; the temperature resistance test mechanism is connected to the circulating water supply device through an overflow pipe; the control mechanism electrically connects the steam supply device, the temperature resistance test mechanism and the circulating water supply device. The temperature resistance tester for plastic bathtub products can realize multi-point simultaneous testing, and has the characteristics of high equipment accuracy, convenient testing, low water consumption, low energy consumption, etc., and can be widely used in the temperature resistance performance testing of bathtub products. The present invention also provides a bathtub product temperature resistance test method, which is completed by a plastic bathtub product temperature resistance tester, is simple and easy to operate, and can adapt to the testing of large-volume bathtubs or bathing pools, and can be widely promoted and applied.

Description

Technical Field

[0001] The invention relates to the technical field of bathtub product detection, and in particular to a temperature resistance tester and a temperature resistance test method for plastic bathtub products. Background Art

[0002] Most of the existing bathtubs, pools or swimming pools and other bathing products are made of glass fiber reinforced plastic products. They need to undergo temperature resistance tests (hot water resistance tests) before leaving the factory to detect the high temperature resistance of the bathtub (pool). The existing hot water resistance test method is the boiling method, which is to add water to the bathtub (pool) to more than 80% of the depth of the bathtub (pool), and then boil it for 100 hours at a specific water temperature (the water temperature of the gel bathtub or pool is 90°C, and the water temperature of the acrylic bathtub or pool is 80°C), and test the deformation, cracking, fading and other performance indicators of the bathtub or pool. Due to the long boiling time and high water temperature of the existing hot water resistance test method, water needs to be continuously added during the boiling process, and in order to ensure temperature balance, the water in the bathtub or pool needs to be stirred and mixed, otherwise the water temperature is prone to instability and insufficient water addition, resulting in inaccurate test data. In addition, as people's living standards improve, bathtubs or pools are getting bigger and bigger, and products such as multi-person bathtubs and infinity pools that are large in size and use a lot of water have appeared, making the detection more and more difficult. The main reasons are: due to the increase in the size of the bathtub or pool, on the one hand, the water resources and electricity consumed for the detection are large, and on the other hand, it is difficult to ensure the stability of the water temperature due to the large volume, so that the test results cannot reflect the authenticity of the bathtub products. Obviously, the boiling method can no longer adapt to the hot water resistance performance test of large-volume bathtubs (pools). It can be seen that the existing technology still needs to be improved and improved. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a plastic bathtub product temperature resistance tester and a temperature resistance test method, aiming to solve the defects of the prior art that the temperature resistance test of bathtub products is cumbersome, unintelligent and lacks precision.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A temperature resistance tester for plastic bathtub products, comprising a steam supply device, a temperature resistance test mechanism, a circulating water supply device and a control mechanism; the steam supply device is connected to the circulating water supply device through a water delivery pipe, and is connected to the temperature resistance test mechanism through a steam delivery pipe; the temperature resistance test mechanism is connected to the circulating water supply device through an overflow pipe; the control mechanism is electrically connected to the steam supply device, the temperature resistance test mechanism and the circulating water supply device.

[0006] In the plastic bathtub product temperature resistance tester, the steam supply device includes a water boiling tank and a heating mechanism arranged in the water boiling tank, the heating mechanism is electrically connected to the control mechanism, the water boiling tank is provided with a steam outlet, the steam outlet is connected to a water distributor, the water distributor is provided with a plurality of water outlets, and the water outlets are connected to the steam delivery pipe.

[0007] In the plastic bathtub product temperature resistance tester, a first liquid level gauge is provided in the boiling water tank, a water supply solenoid valve is provided on the water delivery pipe, and both the first liquid level gauge and the water supply solenoid valve are electrically connected to the control mechanism.

[0008] In the plastic bathtub product temperature resistance tester, the water distributor is provided with an automatic exhaust valve, a flow regulating valve and a temperature-pressure integrated meter. The automatic exhaust valve is used to release pressure when the steam pressure is too high. The flow regulating valve is arranged at the water distribution outlet to adjust the amount of steam distributed at the water distribution outlet. The automatic exhaust valve, the flow regulating valve and the temperature-pressure integrated meter are all electrically connected to the control mechanism.

[0009] In the plastic bathtub product temperature resistance tester, the temperature resistance testing mechanism includes a cup-shaped shell with an opening, a vacuum suction cup is provided on the outer shell, a temperature sensor and a pressure sensor are provided on the shell, the vacuum suction cup is used to fix the shell on the test point, and the temperature sensor and pressure sensor are both electrically connected to the control mechanism, and are used to monitor the temperature and pressure of the steam in the shell respectively.

[0010] In the plastic bathtub product temperature resistance tester, the shell is provided with an overflow port, the overflow port is connected to an overflow pipe, the overflow pipe is provided with an overflow solenoid valve, and the overflow solenoid valve is electrically connected to a control mechanism.

[0011] In the plastic bathtub product temperature resistance tester, a one-way valve is provided on the steam delivery pipe.

[0012] In the plastic bathtub product temperature resistance tester, the circulating water supply device includes a water tank, the water tank is provided with an overflow inlet, the overflow inlet is connected to a water collector, the water collector is provided with a plurality of overflow pipe interfaces, and the overflow pipe interfaces are connected to the overflow pipe.

[0013] In the plastic bathtub product temperature resistance tester, the water tank is also provided with a second liquid level gauge and a water inlet pipe with a water inlet solenoid valve, and the second liquid level gauge and the water inlet solenoid valve are both electrically connected to the control mechanism.

[0014] A temperature resistance test method is provided, and the method is used to test the temperature resistance of a plastic bathtub product. The method uses the above-mentioned plastic bathtub product temperature resistance tester to perform a temperature resistance test on the plastic bathtub product. The method comprises the following steps:

[0015] Step 1: Select the test point according to the shape and structure of the bathtub product, and fix the temperature resistance test mechanism on the test point;

[0016] Step 2: Setting instrument parameters, including: temperature range and pressure range of the temperature resistance test mechanism, temperature range, pressure range and water level limit of the steam supply device, and water level limit of the circulating water supply device;

[0017] Step 3: Start the plastic bathtub product heat resistance tester and conduct a temperature resistance test on the test point for 100 hours. After the test, turn off the plastic bathtub product heat resistance tester. After the test point cools down naturally, check whether the bathtub product meets the standard requirements and complete the test.

[0018] Beneficial effects:

[0019] The present invention provides a heat resistance tester and a heat resistance test method for plastic bathtub products. The heat resistance tester for plastic bathtub products can realize multi-point heat resistance test on bathtub products through steam by setting a steam supply device, a heat resistance test mechanism, a circulating water supply device and a control mechanism. The steam supply device can generate high-temperature steam to provide constant temperature and pressure high-temperature steam for the heat resistance test mechanism. The heat resistance test mechanism can realize multi-point simultaneous heating of bathtub products, and has the characteristics of accurate heating and low energy consumption. The circulating water supply device can intelligently supply water to the steam supply device, and can recycle steam water, reduce energy consumption, and save water resources. The control mechanism can intelligently control the operation of the steam supply device, the heat resistance test mechanism and the circulating water supply device, which not only makes the heat resistance test more accurate, but also makes the test process intelligent and simple. The plastic bathtub product temperature resistance tester of the present invention has high equipment precision and convenient testing, can realize multi-point simultaneous testing, and has low water and power consumption. It can also recycle steam water, and has the characteristics of water saving, low carbon and environmental protection. During use, the heating temperature and steam pressure are accurately controllable and can be automatically adjusted, with a high degree of automation, and can be widely used in the temperature resistance performance testing of bathtub products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a temperature resistance tester for plastic bathtub products provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the water distributor.

[0022] Figure 3 It is a structural diagram of the temperature resistance testing mechanism.

[0023] Figure 4 Schematic diagram of the structure of the water collector.

[0024] Figure 5 It is a three-dimensional diagram of the temperature resistance testing mechanism.

[0025] Markings in the attached drawings: 1-cabinet, 2-steam supply device, 3-circulating water supply device, 4-temperature resistance test mechanism, 5-control panel, 6-display screen, 7-alarm indicator light, 8-emergency stop switch, 9-boiling water tank, 10-water distributor, 11-steam delivery pipe, 12-insulation board, 13-water filling port, 14-water supply solenoid valve, 15-heating mechanism, 16-water distribution outlet, 17-steam outlet, 18-first liquid level gauge, 19-automatic exhaust valve, 20-temperature and pressure integrated table, 21-flow regulating valve, 22-housing, 23-check valve, 24-vacuum suction cup, 25-rubber sealing ring, 26-temperature sensor, 27-pressure sensor, 28-overflow pipe, 29-overflow solenoid valve, 30-water tank, 31-water inlet pipe, 32-drainage outlet, 33-overflow inlet, 34-second liquid level gauge, 35- Water collector, 36-overflow pipe interface, 37-water inlet solenoid valve, 38-drain pipe, 39-switch valve. DETAILED DESCRIPTION

[0026] The present invention provides a heat resistance tester and a heat resistance test method for a plastic bathtub product. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-4The present invention provides a heat resistance tester for plastic bathtub products, comprising a cabinet 1, a steam supply device 2 and a circulating water supply device 3 arranged in the cabinet 1, and a heat resistance test mechanism 4 fixed at a test point, wherein the steam supply device 2 is used to generate steam and transport steam to the test point, and the heat resistance test mechanism 4 is used to pass steam to perform a heat resistance test on the test point, and the circulating water supply device 3 is used to replenish water to the steam supply device 2 and recycle excess steam water, so as to achieve the characteristics of steam water recycling, which can not only avoid steam leakage causing harm to personnel, but also reduce water consumption. The cabinet 1 is also provided with a control mechanism, which is used to control the operation of the heat resistance tester.

[0030] Specifically, Figure 1 As shown, the control mechanism includes a control mainboard, a control panel 5 and a display screen 6. The control mainboard is a mainboard integrated with various electrical components such as relays, frequency converters, and PLCs, and the control mainboard is electrically connected to the steam supply device 2, the circulating water supply device 3, the temperature resistance test mechanism 4, the control panel 5 and the display screen 6, respectively, for controlling the switch and operation of the steam supply device 2, the temperature resistance test mechanism 4 and the circulating water supply device 3; the control panel 5 can be a touch screen control panel or a manual button control panel, or a combination of a touch screen control panel and a manual button control panel, for setting relevant functional parameters such as temperature, pressure, water level, flow, and opening or closing corresponding functions through specific function buttons; the display screen 6 is used to display real-time functional parameters and fault records. Through the control of the control mechanism, the operation of the plastic bathtub product temperature resistance tester is simpler and the temperature and pressure control is more accurate.

[0031] Further, such as Figure 1 As shown, the control mechanism also includes an alarm indicator light 7 and an emergency stop switch 8. The alarm indicator light 7 is used to flash and warn when the instrument detects a fault, or flash and warn when the operation is improper. The emergency stop switch 8 is used to cut off the power supply in time in an emergency to avoid safety hazards caused by steam overheating or excessive steam pressure.

[0032] As an implementation method, Figure 1As shown, the steam supply device 2 includes a water boiling tank 9, a water distributor 10, and a steam delivery pipe 11. The water boiling tank 9 is arranged in the cabinet 1, and a heat insulation board 12 is arranged between the water boiling tank 9 and the control mechanism, and the heat insulation board can prevent the high temperature of the water boiling tank 9 from affecting the control mechanism. The water boiling tank 9 is provided with a water injection port 13 and a steam outlet 17. The water injection port 13 is connected to the circulating water supply device 3 through the arranged water delivery pipe, and the water is supplied to the water boiling tank 9 through the circulating water supply device 3; the steam outlet 17 is connected to the water distributor 10, and the generated steam is delivered out through the water distributor 10. A heating mechanism 15 is arranged in the water boiling tank 9, and the heating mechanism 15 is an electric heating mechanism 15, such as an electric heating wire, and the water in the water boiling tank 9 is heated by the heating mechanism 15 to generate steam. The heating mechanism 15 is electrically connected to the control mechanism, and its switch is controlled by the control mechanism, which is very convenient. The water separator 10 is provided with a plurality of water outlets 16, and the water outlets 16 are connected to the output end of the steam delivery pipe 11, and the output end of the steam delivery pipe 11 is connected to the temperature resistance testing mechanism 4. Through the plurality of water outlets 16 provided in the water separator 10, steam can be supplied to a plurality of temperature resistance testing mechanisms 4 at the same time, thereby realizing multi-point temperature resistance testing of bathing products at the same time and improving efficiency.

[0033] like Figure 1 As shown, in order to better control the water level in the steam supply device 2, as a preferred solution of the above embodiment, the steam supply device 2 also includes a first liquid level meter 18 and a water supply solenoid valve 14, wherein the first liquid level meter 18 is arranged in the boiling water tank 9, the water supply solenoid valve 14 is arranged on the water pipe, and the first liquid level meter 18 and the water supply solenoid valve 14 are both electrically connected to the control mechanism. The first liquid level meter 18 is used to monitor the water level in the boiling water tank 9 in real time, and the water supply solenoid valve 14 is used to control the amount of water entering the boiling water tank 9. The control mechanism can set the upper or lower limit of the water level in the boiling water tank 9. When the first liquid level meter 18 detects that the water level in the boiling water tank 9 is lower than the set lower limit of the water level, the water supply solenoid valve 14 will open to supply water to the boiling water tank 9, and when the first liquid level meter 18 detects that the water level exceeds the upper limit, the control mechanism issues a command to stop the water supply, and the water supply solenoid valve 14 is closed to stop the water supply. Therefore, by providing the first liquid level meter 18 and the water supply electromagnetic valve, the water level in the boiling water tank 9 is easier to control and safer.

[0034] like Figure 2As shown, in some embodiments, the water distributor 10 is provided with a plurality of water outlets 16, an automatic exhaust valve 19, a temperature and pressure integrated meter 20, and a flow regulating valve 21 at each water outlet 16, and the automatic exhaust valve 19, the flow regulating valve 21 and the temperature and pressure integrated meter 20 are all electrically connected to the control mechanism. The temperature and pressure integrated meter 20 is used to detect the temperature and pressure of the steam in the water distributor 10, and transmit the acquired information to the control mechanism; the automatic exhaust valve 19 is used to exhaust and relieve pressure when the steam pressure or temperature is too high, so that the steam pressure in the boiling water tank 9 remains stable, and avoids the safety hazard caused by the excessive steam pressure in the boiling water tank 9; the flow regulating valve 21 is used to adjust the steam diversion volume of each water outlet 16, so that the steam flow distribution in each steam delivery pipe is balanced, so that the temperature or pressure of each test point is close.

[0035] The steam supply device 2 of the above structure can not only provide high-temperature steam with stable temperature and pressure to multiple test points at the same time, realize temperature resistance test at multiple points at the same time, but also can accurately control the temperature and pressure of the steam, thereby ensuring that the test conditions of each test point are the same, making the results more representative. In addition, by setting the first liquid level meter 18, the temperature and pressure integrated meter 20 and the automatic exhaust valve 19, the control mechanism can more conveniently control the operation of the device, with a high degree of automation.

[0036] like Figure 5 As shown, in the above-mentioned plastic bathtub product temperature resistance tester, the temperature resistance test mechanism 4 includes a cup-shaped shell 22 with an opening, the opening of the shell 22 is close to the test point, and the shell 22 is provided with a steam inlet, which is connected to the steam delivery pipe 11, so that the high-temperature steam generated by the boiling water tank 9 can be delivered to the shell 22 through the steam delivery pipe 11, and through the opening of the shell 22, the high-temperature steam heats the test point, simulating the process of water bath heating, and performing the temperature resistance test. In order to better control the direction of the steam, such as Figure 3 As shown, the steam delivery pipe is provided with a one-way valve 23, and the one-way valve 23 opens toward the shell 22, so as to ensure that the steam will only flow from the steam delivery pipe to the shell 22, and there will be no phenomenon of steam backflow. In order to facilitate the fixing of the shell 22 to the surface of the test point, the shell 22 is provided with a vacuum suction cup 24 on the outer cover, and the vacuum suction cup 24 can fix the shell 22 on the test point, so that the fixing of the shell 22 on the surface of the bath product becomes simple. As a preferred embodiment, the vacuum suction cup 24 is also provided with a rubber sealing ring 25, and the rubber sealing ring 25 can make the shell 22 fit more closely with the surface of the point to be measured.

[0037] like Figure 3 , Figure 5As shown, as a preferred embodiment, the shell 22 is provided with a temperature sensor 26 and a pressure sensor 27, and the temperature sensor 26 and the pressure sensor 27 are both electrically connected to the control mechanism. The temperature sensor 26 is used to detect the temperature of the steam in the shell 22 in real time and transmit it to the control mechanism. The pressure sensor 27 is used to detect the steam pressure in the shell 22 in real time and transmit it to the control mechanism. The control mechanism adjusts the steam flow rate flowing into the shell 22 through the flow regulating valve 21 according to the received steam temperature and pressure, so that the temperature and pressure of the steam in the shell 22 meet the requirements.

[0038] As another embodiment, Figure 3 As shown, the shell 22 of the temperature resistance test mechanism 4 is also provided with an overflow port, which is connected to the circulating water supply device 3 through an overflow pipe 28, and an overflow solenoid valve 29 is provided on the overflow pipe 28, and the overflow solenoid valve 29 is electrically connected to the control mechanism. In the specific implementation process, when the pressure and temperature in the shell are moderate, the overflow solenoid valve 29 is in a closed state, but when the steam temperature or pressure in the shell 22 is too high, the overflow solenoid valve 29 will open, and the high-pressure or high-temperature steam in the shell 22 will be depressurized through the overflow pipe 28, thereby ensuring that the temperature and pressure in the shell 22 are kept balanced within a certain range, thereby making the temperature resistance test more accurate. At the same time, the overflow pipe 28 can transport excess steam to the circulating water supply device for recycling, on the one hand, avoiding steam spraying and harming personnel, and on the other hand, allowing excess steam to be recycled, reducing energy consumption and saving water resources. Preferably, the overflow port is located below the shell 22 when the shell 22 is fixed, which is more conducive to the discharge of steam water.

[0039] The temperature resistance testing mechanism 4 of the above structure can not only realize the temperature resistance test of the bathtub product through steam, but also through the arrangement of the temperature sensor 26 and the pressure sensor 27, the overflow port and the overflow solenoid valve 29, it can not only ensure the stability of the steam temperature and pressure at the test point, making the test accurate, but also can recycle the excess steam, save water and energy, and be more energy-saving and environmentally friendly.

[0040] like Figure 1 As shown, as a preferred embodiment, in the above-mentioned plastic bathtub product temperature resistance tester, the circulating water supply device 3 includes a water tank 30, and the water tank 30 is provided with a water inlet for connecting to a water inlet pipe 31 and an overflow inlet 33 for overflow water to flow in, as well as a water pipe connected to the boiling water tank 9. The circulating water supply device 3 can not only supply water to the boiling water tank 9 in a timely manner, but also recycle excess steam condensate, thereby saving water resources and energy and reducing the cost of use. Specifically, the overflow inlet 33 is connected to a water collector 35, and the water collector 35 is provided with an overflow outlet and a plurality of overflow pipe interfaces 36, such as Figure 4As shown, the overflow outlet is connected to the overflow inlet 33 through a pipeline, and the overflow pipe interface 36 is connected to the overflow pipe 28. When the steam pressure or temperature of the temperature resistance test mechanism 4 is too high, part of the steam flows into the water collector 35 from the overflow pipe 28, and then enters the water tank 30 after being collected by the water collector 35, which plays a role in recycling excess steam. At the same time, since the steam carries a large amount of heat, the recycled steam will transfer the heat to the water in the water tank 30, so that the water is heated, which plays a role in preheating the water, thereby reducing the energy consumption when boiling water. The water collector 35 can collect the steam overflowing from multiple temperature resistance test mechanisms 4 at the same time, so that the steam can be recycled to a large extent.

[0041] In some embodiments, Figure 1 As shown, the circulating water supply device 3 further includes a second liquid level gauge 34 and a water inlet solenoid valve 37. The second liquid level gauge 34 is disposed in the water tank 30 and electrically connected to the control mechanism, and is used to detect the water level in the water tank 30 in real time. The water inlet solenoid valve 37 is disposed at the water inlet pipe 31 of the water tank and electrically connected to the control mechanism, and is used to control the water replenishment amount of the water inlet pipe 31. In the specific implementation process, the water level range of the water tank 30 is set by the control mechanism, and the water level in the water tank 30 is monitored by the second liquid level gauge 34. When the water level value is lower than the set water level lower limit, the water inlet solenoid valve 37 is opened to replenish water to the water tank 30. When the water is replenished to exceed the set water level upper limit, the water inlet solenoid valve 37 is closed to stop replenishing water to the water tank 30.

[0042] As a preferred embodiment, the water level of the water tank 30 is higher than the water level of the boiling water tank 9, so that when the water supply solenoid valve is opened, the water in the water tank 30 can flow into the boiling water tank 9 through the water level difference to replenish the boiling water tank 9.

[0043] It should be added that the bottom of the water tank 30 and the boiling water tank 9 are both provided with a drain port 32, and the drain port 32 is connected to a drain pipe 38, and the drain pipe 38 is provided with a switch valve 39. When the plastic bathtub product temperature resistance tester finishes the temperature resistance test of the bathtub product, the water in the water tank 30 and the boiling water tank 9 can be drained by opening the switch valve 39, which is convenient for the mobile transportation of the instrument.

[0044] The circulating water supply device 3 of the above structure can realize intelligent water replenishment and intelligent water filling to the boiling water tank 9, and at the same time, can also realize the recycling of steam water, which is very energy-saving and environmentally friendly.

[0045] The working principle of the above-mentioned plastic bathtub product temperature resistance tester is:

[0046] Turn on the plastic bathtub product temperature resistance tester, set the temperature, pressure, liquid level, flow and other functional parameters through the control panel 5, and fix the temperature resistance test mechanism 4 on the test point of the bathtub. When the plastic bathtub product temperature resistance tester is turned on, the water inlet solenoid valve 37 and the water supply solenoid valve 14 will automatically open, and water will be added to the water tank 30 and the boiling water tank 9. When the water level reaches the upper limit of the water temperature of the boiling water tank 9, the water supply solenoid valve will be closed, and the heating mechanism 15 will heat and generate steam. The steam will be automatically adjusted and distributed by the water distributor 10 according to the set steam flow value, and will be transported to the temperature resistance test mechanism 4 through the steam delivery pipe, and the test point on the inner wall of the bathtub (pool) cylinder will be heated by the temperature resistance test mechanism 4.

[0047] During the temperature resistance test, the first liquid level gauge in the boiling water tank 9 will monitor the water level in the boiling water tank 9 and transmit the signal to the control mechanism. When the water level in the boiling water tank 9 is lower than the lower limit of the water level, the control mechanism will control the water supply solenoid valve to open and replenish water to the boiling water tank 9 until the water level in the boiling water tank 9 is equal to the upper limit of the water level; at the same time, the temperature and pressure integrated meter 20 detects whether the steam temperature and pressure in the water distributor are within the set value. When the steam temperature exceeds the set value, the heating mechanism 15 will stop heating, and when the steam pressure exceeds the set value, the control mechanism will open the automatic exhaust valve 19 to exhaust air to balance the steam pressure in the boiling water tank 9.

[0048] At the same time, the second liquid level meter 34 monitors the water level of the water tank 30 and transmits a signal to the control mechanism. When the water level of the water tank 30 is lower than the set lower limit, the control mechanism opens the water inlet solenoid valve 37 to replenish water to the water tank 30. When the water level of the water tank 30 exceeds the set limit, the control mechanism closes the water inlet solenoid valve 37 to stop filling water.

[0049] At the same time, the temperature sensor 26 and the pressure sensor 27 monitor the temperature and pressure of the steam in the shell 22 in real time and transmit them to the control mechanism. When the temperature or pressure is higher than the set value, the control mechanism opens the overflow solenoid valve 29 to relieve the pressure on the shell 22. At the same time, the excess steam is drained into the collector 35 through the overflow pipe 28 and then recovered in the water tank 30.

[0050] The plastic bathtub product temperature resistance tester of the present invention realizes temperature resistance testing of bathtub products through steam by means of the steam supply device 2, the temperature resistance testing mechanism 4 and the circulating water supply device 3, which not only greatly saves water resources and energy, but also the overflow solenoid valve 29 and the overflow pipe 28 can ensure the constancy of temperature and pressure during the temperature resistance test, and can recycle the excess steam so that the steam can be recycled, saving water resources and energy; at the same time, the temperature resistance testing mechanism is provided with a temperature sensor and a pressure sensor, and the condition of the steam in the shell is monitored by the two parameters of temperature and pressure, thereby making the control of the control mechanism more accurate; and the temperature and pressure integrated meter 20 and the automatic exhaust valve 19 provided in the water distributor can make the temperature and pressure in the boiling water tank 9 constant, thereby making the steam temperature and pressure of the temperature resistance testing mechanism 4 constant, further making the temperature resistance test more accurate.

[0051] The present invention also discloses a temperature resistance test method, which is used to test the temperature resistance of a plastic bathtub product. The method uses the above-mentioned plastic bathtub product temperature resistance tester to perform a temperature resistance test on the bathtub product. The method comprises the following steps:

[0052] Step 1: Select the test point according to the shape and structure of the bathtub product, and fix the temperature resistance test mechanism 4 on the test point. The test point is usually selected at the corner of the bathtub (pool), the bathtub (pool) wall, or any randomly designated part. By heating these parts at the same time, the high temperature resistance of the bathtub (pool) can be tested.

[0053] Step 2: Set the instrument parameters, which include: the temperature range and pressure range of the temperature resistance test mechanism 4, the temperature range, pressure range and water level limit of the steam supply device 2, and the water level limit of the circulating water supply device 3; usually, different temperatures and pressures are set according to the different materials of the bathtub products, wherein the temperature setting at the temperature resistance test mechanism is: the steam temperature is set to 90°C for gel-coat bathtubs or bathtubs, and the steam temperature is set to 80°C for acrylic bathtubs or bathtubs.

[0054] Step 3. Start the plastic bathtub product heat resistance tester and conduct a temperature resistance test on the test point for 100 hours. After the test, turn off the plastic bathtub product heat resistance tester. After the test point cools down naturally, check whether the bathtub product has cracks, deformation, etc., judge the temperature resistance of the bathtub or bath pool according to the standard, and complete the temperature resistance performance test of the bathtub (pool) product.

[0055] The above-mentioned bathtub-like product temperature resistance test method uses a plastic bathtub product temperature resistance tester for testing, which makes the test process very simple and controllable, and the heating is accurate. It can be adapted to large-volume bathtub-like products, and thus has wide practical value.

[0056] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A plastic bathtub product temperature resistance tester, characterized in that: Including steam supply device, temperature resistance test mechanism, circulating water supply device and control mechanism; The steam supply device is connected to the circulating water supply device through a water delivery pipe, and is connected to the temperature resistance test mechanism through a steam delivery pipe; the temperature resistance test mechanism is connected to the circulating water supply device through an overflow pipe; the control mechanism is electrically connected to the steam supply device, the temperature resistance test mechanism and the circulating water supply device; The steam supply device includes a water boiling tank and a heating mechanism arranged in the water boiling tank, the heating mechanism is electrically connected to the control mechanism, the water boiling tank is provided with a steam outlet, the steam outlet is connected to a water separator, the water separator is provided with a plurality of water outlets, and the water outlets are connected to a steam delivery pipe; the temperature resistance testing mechanism includes a cup-shaped shell with an opening, the shell is provided with a steam inlet, and the steam inlet is connected to the steam delivery pipe.

2. The plastic bathtub product temperature resistance tester according to claim 1, characterized in that: A first liquid level meter is arranged in the water boiling tank, a water supply solenoid valve is arranged on the water delivery pipe, and both the first liquid level meter and the water supply solenoid valve are electrically connected to the control mechanism.

3. The plastic bathtub product temperature resistance tester according to claim 1, characterized in that: The water distributor is provided with an automatic exhaust valve, a flow regulating valve and a temperature-pressure integrated meter. The automatic exhaust valve is used to release pressure when the steam pressure is too high. The flow regulating valve is arranged at the water distribution outlet to adjust the amount of steam distributed at the water distribution outlet. The automatic exhaust valve, the flow regulating valve and the temperature-pressure integrated meter are all electrically connected to the control mechanism.

4. The plastic bathtub product temperature resistance tester according to claim 1, characterized in that: The shell outer shell is provided with a vacuum suction cup, and the shell is provided with a temperature sensor and a pressure sensor. The vacuum suction cup is used to fix the shell on the test point. The temperature sensor and the pressure sensor are both electrically connected to the control mechanism and are used to monitor the temperature and pressure of the steam in the shell respectively.

5. The plastic bathtub product temperature resistance tester according to claim 4, characterized in that: The shell is provided with an overflow port, the overflow port is connected to an overflow pipe, the overflow pipe is provided with an overflow solenoid valve, and the overflow solenoid valve is electrically connected to the control mechanism.

6. The plastic bathtub product temperature resistance tester according to claim 1, characterized in that: A one-way valve is arranged on the steam delivery pipe.

7. The plastic bathtub product temperature resistance tester according to claim 1, characterized in that: The circulating water supply device comprises a water tank, the water tank is provided with an overflow inlet, the overflow inlet is connected to a water collector, the water collector is provided with a plurality of overflow pipe interfaces, and the overflow pipe interfaces are connected to the overflow pipe.

8. The plastic bathtub product temperature resistance tester according to claim 7, characterized in that: The water tank is also provided with a second liquid level gauge and a water inlet pipe with a water inlet solenoid valve. The second liquid level gauge and the water inlet solenoid valve are both electrically connected to the control mechanism.

9. A temperature resistance test method, which is used to test the temperature resistance of plastic bathtub products, characterized in that: The method uses the plastic bathtub product temperature resistance tester according to any one of claims 1 to 8 to perform a temperature resistance test on the plastic bathtub product, and the method comprises the steps of: Step 1: Select the test point according to the shape and structure of the bathtub product, and fix the temperature resistance test mechanism on the test point; Step 2: Setting instrument parameters, including: temperature range and pressure range of the temperature resistance test mechanism, temperature range, pressure range and water level limit of the steam supply device, and water level limit of the circulating water supply device; Step 3: Start the plastic bathtub product heat resistance tester and conduct a temperature resistance test on the test point for 100 hours. After the test, turn off the plastic bathtub product heat resistance tester. After the test point cools down naturally, check whether the bathtub product meets the standard requirements and complete the test.

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