CN212409999U - Instant heating component testing machine - Google Patents

Abstract

The utility model discloses an instant heating component testing machine, wherein the instant heating component is used for an intelligent closestool and is provided with a water inlet, a water outlet and a pressure relief port; the testing machine comprises a positioning jig, a tightness testing device and a controller; the positioning jig is used for being communicated with the fluid when the instant heating assembly is positioned; the sealing performance testing device is matched with the positioning jig, a closed air path with certain pressure is established together with the instant heating assembly, the pressure of the closed air path is tested at intervals of preset time, and the controller compares the pressure change to realize the sealing performance detection of the instant heating assembly. Because the gas medium is adopted for carrying out the tightness test, the gas circuit pressure has high correlation with the sealing performance of the instant heating assembly, so that the test result is accurate and reliable, and the test precision is high.

Description

Instant heating component testing machine

Technical Field

The utility model relates to an intelligent closestool makes technical field, especially relates to an instant heating component test machine.

Background

Smart toilets typically have an instant heating assembly for rapidly heating the water flow to meet the flushing needs. Before the product leaves the factory, various tests are generally required to be carried out on the instant heating assembly to ensure the yield, such as a sealing test, a flowmeter frequency test, a heating pipe resistance test and the like.

Wherein, the tightness test project mostly adopts a water test method. The tester links to each other the water inlet of instant heating subassembly with test equipment's delivery port, plugs up the delivery port of instant heating subassembly with the hand to start test equipment and make it to the instant heating subassembly water injection, whether visual inspection instant heating subassembly takes place the water leakage phenomenon afterwards. Because the test result depends on manual judgment, the misjudgment risk exists, and the test efficiency is lower.

In addition, because a plurality of test items are provided, each test item on the existing test machine can only be independently carried out at a corresponding station, so that the test item of each station is single, the test procedure is longer, and the overall test efficiency is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned defect or the problem that exist among the background art, provide an instant heating subassembly test machine, can carry out the leakproofness test to instant heating subassembly at least, and have accurate reliable test result and comparatively efficient efficiency of software testing.

In order to achieve the above purpose, the technical scheme of the utility model is that: an instant heating component testing machine is characterized in that an instant heating component is used for an intelligent closestool and is provided with a water inlet, a water outlet and a pressure relief opening; the testing machine comprises: the positioning jig is used for positioning the instant heating assembly and comprises a first positioning block, a second positioning block and a plugging piece; channels are arranged in the first positioning block and the second positioning block and are respectively used for communicating the water inlet and the water outlet; the plugging piece is used for plugging the pressure relief port; the tightness testing device comprises an air inlet assembly, an exhaust assembly and a pressure sensor, wherein the air inlet assembly can be opened and closed; the air inlet assembly is communicated with the channel of the first positioning block through a pressure sensor and conveys air with first pressure to the channel, and the first pressure is not equal to atmospheric pressure; the discharge assembly is communicated with the channel of the second positioning block and is used for discharging fluid outwards; when the air inlet assembly and the discharge assembly are both closed, the pressure sensor measures the air pressure at the position of the pressure sensor at a preset time interval; and the controller is in signal connection with the pressure sensor and compares the difference value of the two measured values of the pressure sensor with a preset first threshold value so as to output the sealing test result of the thermal assembly.

In one embodiment: a water inlet pipe and a water outlet pipe respectively extend from the positions of the instant heating assembly corresponding to the water inlet and the water outlet; the positioning jig further comprises a fixing part, a first air cylinder, a second air cylinder and a third air cylinder; the first cylinder and the second cylinder are fixedly connected with the first positioning block and the second positioning block respectively and drive the first positioning block and the second positioning block to slide to a communication position or leave from the communication position relative to the fixing part respectively; the third cylinder is fixedly connected with the plugging piece and drives the plugging piece to slide to a plugging position or leave from the plugging position relative to the fixing part; at the communication position, the water inlet pipe and the water outlet pipe are respectively inserted into the channels of the first positioning block and the second positioning block to be respectively communicated with the channels; in the plugging position, the plugging piece is abutted against the pressure relief opening to plug the pressure relief opening.

In one embodiment: the instant heating component is provided with a pressure release valve which is conducted to release pressure outwards when the pressure in the inner cavity of the instant heating component reaches a pressure release pressure; the gas inlet assembly switches and outputs gas with a first pressure, a second pressure, a third pressure and a fourth pressure; the pressure relief pressure is equal to the fourth pressure, is greater than the first pressure and the third pressure, and is less than or equal to the second pressure; when the air inlet assembly outputs gas with a first pressure and a second pressure, the third cylinder drives the blocking piece to slide to the blocking position; when the air inlet assembly outputs air with third pressure and fourth pressure, the third air cylinder drives the blocking piece to slide and leave the blocking position.

In one embodiment: the air inlet assembly comprises an air supply device and a plurality of first electromagnetic valves; the gas supply device is provided with a plurality of gas supply ports to output gases with different pressures; each air supply port is correspondingly communicated with a first electromagnetic valve so as to be communicated with the channel of the first positioning block through the first electromagnetic valve; each first electromagnetic valve controls the communication between each gas supply port and the water inlet pipe so as to realize the opening and closing of the gas inlet assembly and switch and output gas with different pressures; the discharging component comprises a second electromagnetic valve which is used for controlling the communication between the water outlet pipe and the outside atmosphere so as to realize the opening and closing of the discharging component.

In one embodiment: the positioning jig further comprises a third positioning block, a fourth positioning block and a fourth air cylinder; the third positioning block is used for supporting the instant heating assembly in the vertical direction; the fourth positioning block is used for being matched with the third positioning block so as to position the instant heating assembly in the vertical direction; the fourth cylinder rigid coupling the fourth locating piece to it slides and selectively butt along vertical direction the instant heating subassembly.

In one embodiment: the button is in signal connection with the controller, is operated by a user and sends a starting signal to the controller; the controller receives the starting signal, acquires a first measured value of the pressure sensor after a first preset time, and acquires a second measured value of the pressure sensor after a second preset time.

In one embodiment: the instant heating assembly is provided with a flow meter, and the testing machine further comprises a water inlet assembly which can be opened and closed; the channel of the first positioning block is switched to communicate the air inlet assembly and the water inlet assembly; the controller is in signal connection with the water inlet assembly and the flowmeter of the instant heating assembly to obtain a flow value of water flow output by the water inlet assembly and a measurement value of the flowmeter of the instant heating assembly, and the difference value of the flow value and the measurement value is compared with a preset second threshold value to output a flowmeter frequency test result of the instant heating assembly.

In one embodiment: the water inlet assembly comprises a water supply device and a plurality of third electromagnetic valves; the water supply device is provided with a plurality of water supply ports so as to output water flows with different flow rates; each water supply port is correspondingly communicated with a third electromagnetic valve and is communicated with the channel of the first positioning block through the third electromagnetic valve; and each third electromagnetic valve controls the communication between each water supply port and the channel of the first positioning block so as to realize the opening and closing of the water inlet assembly and switch and output water flows with different flow rates.

In one embodiment: each water supply port of the water inlet assembly is provided with a built-in flowmeter; the controller is in signal connection with the built-in flowmeter to obtain the flow value of the water flow output by the water inlet assembly.

In one embodiment: the instant heating component is provided with a heating pipe and connecting terminals led out from two ends of the heating pipe; the testing machine further comprises a resistance value measuring instrument, and two measuring terminals of the resistance value measuring instrument are correspondingly and electrically connected with the two wiring terminals so as to measure the resistance value of the heating pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the instant heating component testing machine provided by the embodiment of the utility model adopts the gas medium to carry out the tightness test, and realizes the detection of whether the instant heating component has a leakage point or not by establishing the closed gas circuit with the first pressure together by the tightness testing device, the positioning jig and the instant heating component and testing the pressure change of the closed gas circuit at an interval of a preset time; the air pressure of the air path has high correlation with whether leakage points exist in the instant heating assembly or not, so that the test result is accurate and reliable, and the test precision is high;

(2) in the instant heating component testing machine provided by the embodiment of the utility model, the first cylinder and the second cylinder respectively drive the first positioning block and the second positioning block to slide to the communication positions, and the water inlet pipe and the water outlet pipe are respectively inserted into the channels of the first positioning block and the second positioning block to be respectively in fluid communication with the first positioning block and the second positioning block, so that the instant heating component is positioned and in fluid communication with the instant heating component at the same time, and the mounting efficiency is high;

(3) the instant heating component testing machine provided by the embodiment of the utility model has the advantages that the air inlet component outputs four gases with different pressures, so that the testing machine of the embodiment can perform relatively complete tightness tests, including conventional sealing tests and pressure relief sealing tests; whether the pressure release valve works under the design pressure or not is corrected by performing the pressure release sealing test, so that the pressure release performance of the instant heating assembly can be detected, and the accuracy of the test result of the conventional sealing test is also ensured;

(4) according to the instant heating component testing machine provided by the embodiment of the utility model, the air inlet component and the air outlet component are opened and closed through the electromagnetic valve, the structure is simple, and the cost is lower;

(5) the instant heating component testing machine provided by the embodiment of the utility model has the advantages that the third positioning block and the fourth positioning block are matched to position the instant heating component in the vertical direction, so that the instant heating component can not be out of position during testing;

(6) the instant heating component testing machine provided by the embodiment of the utility model sends the starting signal through the button, the controller automatically obtains the twice test paper of the pressure sensor at intervals of the first preset time and the second preset time, and the automatic test of a certain degree is realized;

(7) the instant heating component testing machine provided by the embodiment of the utility model also comprises a water inlet component, and the channel of the first positioning block is switched and communicated with the water inlet component and the air inlet component; by switching and outputting water flow and gas in the testing machine, water path connection and gas path connection can be respectively established with the instant heating assembly, and flowmeter frequency test and tightness test are respectively carried out, so that the time and station occupation for mounting the instant heating assembly to a jig for multiple times are saved, the testing procedure is shortened, and the overall testing efficiency is improved;

(8) the utility model discloses instant heating assembly test machine still includes resistance measuring instrument, is used for measuring the resistance of heating pipe has further richened the test function of this embodiment test machine.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating a connection relationship between a water path and an air path of a testing machine according to an embodiment of the present invention, wherein the water path is shown by a solid line and the air path is shown by a dotted line;

fig. 2 is a perspective view of a positioning jig of a testing machine according to an embodiment of the present invention;

fig. 3 is a perspective view of an instant heating assembly in accordance with an embodiment of the present invention;

fig. 4 is a front view of an instant heating assembly in accordance with an embodiment of the present invention;

fig. 5 is a perspective view of the testing machine according to the embodiment of the present invention after the positioning fixture and the instant heating assembly are mounted.

Description of the main reference numerals:

a positioning jig 100; an operating platform 11 and a bracket 12; a first positioning block 21, a second positioning block 22, a third positioning block 23, a fourth positioning block 24 and a blocking piece 25; a first cylinder 31, a second cylinder 32, a third cylinder 33, and a fourth cylinder 34;

a thermal assembly 200; water inlet pipe 210, water outlet pipe 220, pressure relief port 230, flowmeter 240 and heating pipe 250.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are preferred embodiments of the invention and should not be considered as excluding other embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

Referring to fig. 1-5, embodiments of the present invention provide an instant heating component testing machine for performing a sealing test, a flowmeter frequency test and a heating pipe resistance test on an instant heating component.

The instant heating assembly 200 is for a smart toilet having a water inlet, a water outlet, and a pressure relief vent 230. In this embodiment, the instant heating assembly 200 extends a water inlet pipe 210 and a water outlet pipe 220 from the positions corresponding to the water inlet and the water outlet, respectively. A pressure relief valve is arranged at the pressure relief port 230, and the pressure relief valve is conducted to release pressure outwards when the fluid pressure in the inner cavity of the instant heating component reaches a pressure relief pressure, so that the protection purpose is achieved. In this embodiment, the pressure relief pressure is 0.3 MPa.

Further, the instant heating assembly 200 further has a flow meter 240 and a heating pipe 250 disposed between the water inlet and the water outlet. The flow meter 240 is a hall induction flow meter having an impeller with magnetic poles loaded therein for measuring the flow of water within the instant heating assembly. The heating pipe 250 is used for rapidly heating water flow to meet the flushing requirement of the intelligent closestool, and connecting terminals are led out from two ends of the heating pipe to supply power to the intelligent closestool.

In this embodiment, the instant heating component testing machine includes: positioning jig 100, leakproofness testing arrangement, flow testing arrangement, resistance testing arrangement, controller and button.

The positioning fixture 100 is used for positioning the instant heating assembly 200, and includes a fixing portion, and a first positioning block 21, a second positioning block 22, a plugging member 25, a third positioning block 23, a fourth positioning block 24, a first cylinder 31, a second cylinder 32, a third cylinder 33, and a fourth cylinder 34 disposed on the fixing portion.

The fixed part comprises an operation platform 11 and a bracket 12. The first positioning block 21 and the second positioning block 22 are slidably disposed on the operating platform 11 along the horizontal direction, and a channel is disposed in the operating platform and is respectively used for communicating the water inlet and the water outlet. In this embodiment, the first positioning block 21 is configured as a multi-way structure having a plurality of inlets and an outlet, and the water inlet communicates with the outlet of the first positioning block. The blocking piece 25 is slidably disposed on the operation platform 11 along the horizontal direction and is used for blocking the pressure relief opening 230. In the present exemplary embodiment, the closure element 25 is designed as a closure rod. The third positioning block 23 is fixedly disposed on the operation platform 11, and is configured to support the instant heating assembly 200 in a vertical direction. The fourth positioning block 24 is slidably disposed on the bracket 12 along the vertical direction, and cooperates with the third positioning block 23 to clamp and stably position the instant heating assembly 200 in the vertical direction, so that the instant heating assembly 200 does not run out during testing.

The first cylinder 31 and the second cylinder 32 are respectively and fixedly connected with the first positioning block 21 and the second positioning block 22 and respectively drive the first positioning block and the second positioning block to slide to a communication position or leave from the communication position relative to the fixing portion. At the communication position, the water inlet pipe 210 and the water outlet pipe 220 are respectively inserted into the channels of the first positioning block 21 and the second positioning block 22 to be respectively communicated with the channels, so that the instant heating assembly 200 is positioned and is in fluid communication with the channels, and the installation efficiency is high. In addition, the third cylinder 33 fixes the blocking piece 25 and drives the blocking piece to slide to or away from a blocking position relative to the fixing part. In the blocking position, the blocking piece abuts against the pressure relief opening 230 to block it, preventing fluid from being relieved. The fourth cylinder 34 is fixedly connected to the fourth positioning block 24 to drive the fourth positioning block to slide in the vertical direction and selectively abut against the instant heating assembly 200.

The tightness testing device comprises an air inlet assembly, an exhaust assembly and a pressure sensor, wherein the air inlet assembly, the exhaust assembly and the pressure sensor can be opened and closed. The air inlet assembly is communicated with the channel of the first positioning block through a pressure sensor and conveys air with first pressure to the channel, and the first pressure is not equal to atmospheric pressure. The discharge assembly is communicated with the channel of the second positioning block and is used for discharging fluid outwards. The pressure sensor is a pressure transmitter which converts pressure signals into digital signals and sends the digital signals to the outside, and when the air inlet assembly and the air discharge assembly are both closed, namely when the air path is in a closed state, the pressure sensor measures the air pressure at the position of the pressure sensor at intervals of preset time.

Specifically, the air inlet assembly comprises an air supply device and a plurality of first electromagnetic valves. The gas supply device is communicated with an external gas source, a booster pump is arranged in the gas supply device, and the gas supply device is provided with a plurality of gas supply ports so as to output gas with different pressures through different gas supply ports after being pressurized by the booster pump. Each air supply port is correspondingly communicated with a first electromagnetic valve so as to be communicated with the channel of the first positioning block through the first electromagnetic valve. In this embodiment, the gas inlet assembly is switchable to output gas having a first pressure, a second pressure, a third pressure, and a fourth pressure. And the pressure relief pressure is equal to the fourth pressure, is greater than the first pressure and the third pressure, and is less than or equal to the second pressure. Specifically, the first pressure, the second pressure, the third pressure, and the fourth pressure of the present embodiment are 0.07MPa, 0.3MPa, 0.12MPa, and 0.3MPa, respectively, that is, the second pressure is equal to the fourth pressure, so that the present embodiment has three air supply ports and three first electromagnetic valves. Therefore, each first electromagnetic valve controls the communication between each gas supply port and the channel and the water inlet pipe of the first positioning block so as to realize the opening and closing of the gas inlet assembly and switch and output gas with different pressures.

In this embodiment, the gas inlet assembly outputs four gases with different pressures, so that the testing machine of this embodiment can perform a relatively complete tightness test. Specifically, when the air intake assembly outputs gas having a first pressure and a second pressure, the third cylinder 33 drives the block piece 25 to slide to the blocking position to perform a normal sealing test; when the air inlet assembly outputs air with third pressure and fourth pressure, the third air cylinder 33 drives the blocking piece 25 to slide and leave the blocking position, so that the pressure relief sealing test is carried out. Therefore, whether the pressure release valve works under the design pressure or not is corrected through the pressure release sealing test, so that the pressure release performance of the instant heating assembly 200 can be detected, and the accuracy of the test result of the conventional sealing test is also ensured.

The discharging component comprises a second electromagnetic valve which is used for controlling the communication between the water outlet pipe and the outside atmosphere so as to realize the opening and closing of the discharging component. It is to be noted that, in the present embodiment, the exhaust member is used to exhaust gas when the tester performs the leak test. The discharge assembly is used to discharge the water stream when the tester is running a flow meter frequency test. Thus, the drain assembly is shared under both tests, saving equipment costs.

The controller is in signal connection with the pressure sensor, compares the difference value of two measurement values of the pressure sensor with a preset first threshold value, and judges and outputs the sealing test result of the instant heating assembly. Specifically, when the absolute value of the difference is greater than the first threshold, it indicates that there is significant leakage from the thermal assembly, and the result of the leak tightness test is failed; and when the absolute value of the difference is smaller than the first threshold, the fact that the thermal assembly has no obvious leakage is indicated, and the sealing performance test result is qualified.

The utility model discloses an instant heating assembly test machine adopts the gas medium to carry out the leakproofness test, through with leakproofness testing arrangement, positioning jig 100 and instant heating assembly 200 establish the sealed gas circuit that has first pressure jointly to the pressure variation of this sealed gas circuit of interval preset time test realizes whether having the detection of leakage point to instant heating assembly. Because the air pressure of the air path has high correlation with whether the leakage point exists in the instant heating assembly or not, the test result is accurate and reliable, and the test precision is high.

Further, the flow testing device comprises a water inlet assembly capable of being opened and closed. The channel of the first positioning block 21 is switched to be communicated with the air inlet assembly and the water inlet assembly, so that water flow and gas are output through switching inside the testing machine, water path connection and air path connection can be respectively established with the instant heating assembly 200, flowmeter frequency testing and tightness testing are respectively carried out, time for mounting the instant heating assembly to the jig for multiple times and station occupation can be saved, testing procedures are shortened, and overall testing efficiency is improved.

During testing, the controller is in signal connection with the water inlet assembly and the flowmeter 240 of the instant heating assembly to obtain a flow value of water flow output by the water inlet assembly and a measurement value of the flowmeter 240 of the instant heating assembly, and the difference value of the flow value and the measurement value is compared with a preset second threshold value to output a flowmeter frequency test result of the instant heating assembly. In this embodiment, when the difference is greater than the second threshold, it indicates that the flow meter 240 of the instant heating assembly is not accurate, and the flow meter frequency test result is not good; when the difference is smaller than the second threshold, it indicates that the flowmeter 240 of the instant heating assembly is relatively accurate, and the flowmeter frequency test result is qualified.

In a specific structure, the water inlet assembly comprises a water supply device and a plurality of third electromagnetic valves. The water supply device is communicated with an external water source, is internally provided with a flow adjusting structure and is provided with a plurality of water supply ports so as to output water flows with different flows through different water supply ports after the flow adjustment. And each water supply port is correspondingly communicated with a third electromagnetic valve and is communicated with the channel of the first positioning block through the third electromagnetic valve. The test can be carried out under different flow environments, so that the test range is expanded, and the reliability of the test result is improved. Therefore, each third electromagnetic valve controls the communication between each water supply port and the channel of the first positioning block so as to realize the opening and closing of the water inlet assembly and switch and output water flows with different flow rates. It goes without saying that switching the passage of the first positioning block 21 to communicate the air intake assembly and the water intake assembly can be achieved by selectively opening one of the first solenoid valves and the third solenoid valves. In addition, each water supply port of the water inlet assembly is provided with a built-in flowmeter, and the controller is in signal connection with the built-in flowmeter so as to obtain a flow value of water flow output by the water inlet assembly.

Furthermore, the resistance value testing device is a resistance value measuring instrument having two measuring terminals electrically connected to the two connecting terminals correspondingly to measure the resistance value of the heating tube 250, thereby further enriching the testing function of the testing machine of this embodiment. In this embodiment, the resistance measuring instrument is in signal connection with the controller to be controlled by the controller to perform a heating pipe resistance test on the instant heating component, and the measurement result is fed back to the controller.

Preferably, the utility model discloses a test machine still has the display, its signal connection the controller to show the test result and the measuring result of above-mentioned each item test for the tester through the display, so that the tester separates qualified product and nonconforming product.

It is worth explaining, in the basic technical scheme of the utility model, the controller only need to the pressure sensor twice measured value the difference with first threshold value carry out the comparison can, therefore through using current controller and to its configuration with simple control process, just can realize the utility model discloses a leakproofness test procedure. As for the utility model discloses other each work that receives the controlling part can be controlled a plurality of simple controllers by the tester manual work and carry out independent control to it respectively, also can be according to presetting each controlled part of sequential control and correspond work as the controller of this embodiment.

For example, in this embodiment, the button signal is connected to the controller, which is operated by the user and sends an activation signal to the controller. The controller receives the starting signal, acquires a first measured value of the pressure sensor after a first preset time, and acquires a second measured value of the pressure sensor after a second preset time, so that two measured values of the pressure sensor are acquired automatically in a time-sharing manner, and automatic testing to a certain degree is realized. In addition, the cylinder action of positioning fixture 100, the opening and closing of subassembly, the subassembly that admits air, the subassembly that intakes, the subassembly that discharges, the switching of subassembly that admits air and the subassembly that admits water, the switching of subassembly output atmospheric pressure that admits air, the control of processes such as the switching of subassembly output water flow that admits water, technical personnel in the art can all carry out corresponding configuration to the controller according to following test procedure and according to sequential logic to realize the higher automated test of degree as required, it will not be repeated herein for one of them.

The testing machine of the embodiment has the following testing procedures:

(1) and (3) positioning: the tester puts the instant heating assembly 200 on the third positioning block 23 of the positioning jig 100, and starts the positioning jig 100, the first cylinder 31 and the second cylinder 32 respectively drive the first positioning block 21 and the second positioning block 22 to slide to the communication position and respectively fluidly communicate with the water inlet and the water outlet of the instant heating assembly 200, and the fourth cylinder 34 drives the fourth positioning block 24 to slide downwards and abut against the instant heating assembly 200.

(2) The wiring process: the tester connects the signal lines of the tester to the instant assembly 200, including the signal lines of the flow meter 240 that connect the controller signals to the instant assembly, and the terminals that connect the two measurement terminals of the resistance meter to the heater tube 250 of the instant assembly.

(3) The resistance value test process of the heating pipe comprises the following steps: the resistance measuring instrument feeds back the measured resistance of the heating pipe to the controller.

(4) Conventional seal test during seal test: the third cylinder 33 drives the block piece 25 to slide to the blocking position to block the pressure relief port 230. Then, the discharge component is closed, the air inlet component outputs air with the air pressure of 0.07MPa to the air path, and after the short pressure stabilization, the air inlet component is closed and stops air inlet, so that the air path is closed and enters a pressure maintaining state; the controller obtains the two test values of the pressure sensor at a preset time interval and judges whether the sealing performance of the instant heating assembly is qualified or not, and after the judgment is finished, the discharging assembly is opened to release the pressure. The air inlet assembly outputs air with the air pressure of 0.3MPa into the air path, and a conventional sealing test is repeatedly carried out, so that the test is carried out under two conditions that the air pressure is respectively less than or greater than the atmospheric pressure, and the test range is widened.

(5) Pressure relief sealing test in the sealing test process: the third cylinder 33 drives the block piece 25 away from the blocking position to test its pressure relief performance. Then, similar to a conventional sealing test, the discharge assembly is closed, the air inlet assembly outputs air with the air pressure of 0.12MPa to the air path, and after the air pressure is stabilized for a short time, the air inlet assembly is closed and stops air inlet, so that the air path is closed and enters a pressure maintaining state; the controller obtains the two test values of the pressure sensor at a preset time interval and judges whether the sealing performance of the instant heating assembly is qualified or not, and after the judgment is finished, the discharging assembly is opened to release the pressure. In the pressure relief sealing test, if the difference between the two test values of the pressure sensor is large, the pressure relief valve is turned on and performs pressure relief under the pressure of 0.12MPa, the pressure relief pressure does not meet 0.3MPa of the design value, and the test result is unqualified. The air inlet assembly outputs air with the air pressure of 0.3MPa into the air path, and the pressure relief and sealing test is repeatedly carried out once. In the pressure relief sealing test, if the difference value between the two test values of the pressure sensor is small, the pressure relief valve is not conducted to relieve pressure under the pressure of 0.3MPa, the pressure relief pressure does not meet the 0.3MPa of the design value, and the test result is also unqualified.

(6) And (3) a flow meter frequency testing process: the air inlet assembly is closed, the discharge assembly is opened, the water inlet assembly is also opened, and water flow with a certain flow rate is output; after the waterway is stable, the controller obtains the flow value of the water flow output by the water inlet assembly and the measurement value of the flowmeter 240 of the instant heating assembly, and judges whether the impeller rotation frequency of the flowmeter 240 of the instant heating assembly is accurate under the given flow; and after the judgment is finished, switching the water inlet assembly to output water flows with different flow rates, and repeating the frequency test of the flowmeter twice.

(7) The disassembling process comprises the following steps: and returning each cylinder of the positioning jig 100, detaching the signal line by a tester, taking the instant heating assembly 200 out of the third positioning block 23, and classifying the instant heating assembly 200 to a corresponding position according to each test result to complete the test.

The description of the above specification and examples is intended to illustrate the scope of the invention, but should not be construed as limiting the scope of the invention. Modifications, equivalents and other improvements which may be made to the embodiments of the invention or to some of the technical features thereof by a person of ordinary skill in the art through logical analysis, reasoning or limited experimentation in light of the above teachings of the invention or the above embodiments are intended to be included within the scope of the invention.

Claims (10)

1. An instant heating component testing machine is characterized in that an instant heating component is used for an intelligent closestool and is provided with a water inlet, a water outlet and a pressure relief opening; characterized in that, the test machine includes:

the positioning jig is used for positioning the instant heating assembly and comprises a first positioning block, a second positioning block and a plugging piece; channels are arranged in the first positioning block and the second positioning block and are respectively used for communicating the water inlet and the water outlet; the plugging piece is used for plugging the pressure relief port;

the tightness testing device comprises an air inlet assembly, an exhaust assembly and a pressure sensor, wherein the air inlet assembly can be opened and closed; the air inlet assembly is communicated with the channel of the first positioning block through a pressure sensor and conveys air with first pressure to the channel, and the first pressure is not equal to atmospheric pressure; the discharge assembly is communicated with the channel of the second positioning block and is used for discharging fluid outwards; when the air inlet assembly and the discharge assembly are both closed, the pressure sensor measures the air pressure at the position of the pressure sensor at a preset time interval;

and the controller is in signal connection with the pressure sensor and compares the difference value of the two measured values of the pressure sensor with a preset first threshold value so as to output the sealing test result of the thermal assembly.

2. The instant component testing machine as defined in claim 1, wherein: a water inlet pipe and a water outlet pipe respectively extend from the positions of the instant heating assembly corresponding to the water inlet and the water outlet;

the positioning jig further comprises a fixing part, a first air cylinder, a second air cylinder and a third air cylinder;

the first cylinder and the second cylinder are fixedly connected with the first positioning block and the second positioning block respectively and drive the first positioning block and the second positioning block to slide to a communication position or leave from the communication position relative to the fixing part respectively; the third cylinder is fixedly connected with the plugging piece and drives the plugging piece to slide to a plugging position or leave from the plugging position relative to the fixing part;

at the communication position, the water inlet pipe and the water outlet pipe are respectively inserted into the channels of the first positioning block and the second positioning block to be respectively communicated with the channels;

in the plugging position, the plugging piece is abutted against the pressure relief opening to plug the pressure relief opening.

3. The instant component testing machine as claimed in claim 2, wherein: the instant heating component is provided with a pressure release valve which is conducted to release pressure outwards when the pressure in the inner cavity of the instant heating component reaches a pressure release pressure;

the gas inlet assembly switches and outputs gas with a first pressure, a second pressure, a third pressure and a fourth pressure; the pressure relief pressure is equal to the fourth pressure, is greater than the first pressure and the third pressure, and is less than or equal to the second pressure;

when the air inlet assembly outputs gas with a first pressure and a second pressure, the third cylinder drives the blocking piece to slide to the blocking position;

when the air inlet assembly outputs air with third pressure and fourth pressure, the third air cylinder drives the blocking piece to slide and leave the blocking position.

4. An instant component testing machine as defined in claim 3 wherein: the air inlet assembly comprises an air supply device and a plurality of first electromagnetic valves;

the gas supply device is provided with a plurality of gas supply ports to output gases with different pressures; each air supply port is correspondingly communicated with a first electromagnetic valve so as to be communicated with the channel of the first positioning block through the first electromagnetic valve; each first electromagnetic valve controls the communication between each gas supply port and the water inlet pipe so as to realize the opening and closing of the gas inlet assembly and switch and output gas with different pressures;

the discharging component comprises a second electromagnetic valve which is used for controlling the communication between the water outlet pipe and the outside atmosphere so as to realize the opening and closing of the discharging component.

5. The instant component testing machine as claimed in claim 2, wherein: the positioning jig further comprises a third positioning block, a fourth positioning block and a fourth air cylinder;

the third positioning block is used for supporting the instant heating assembly in the vertical direction; the fourth positioning block is used for being matched with the third positioning block so as to position the instant heating assembly in the vertical direction;

the fourth cylinder rigid coupling the fourth locating piece to it slides and selectively butt along vertical direction the instant heating subassembly.

6. The instant component testing machine as defined in claim 1, wherein: the button is in signal connection with the controller, is operated by a user and sends a starting signal to the controller;

the controller receives the starting signal, acquires a first measured value of the pressure sensor after a first preset time, and acquires a second measured value of the pressure sensor after a second preset time.

7. The instant component testing machine as defined in claim 1, wherein: the instant heating assembly is provided with a flow meter, and the testing machine further comprises a water inlet assembly which can be opened and closed;

the channel of the first positioning block is switched to communicate the air inlet assembly and the water inlet assembly;

the controller is in signal connection with the water inlet assembly and the flowmeter of the instant heating assembly to obtain a flow value of water flow output by the water inlet assembly and a measurement value of the flowmeter of the instant heating assembly, and the difference value of the flow value and the measurement value is compared with a preset second threshold value to output a flowmeter frequency test result of the instant heating assembly.

8. The instant component testing machine as defined in claim 7, wherein: the water inlet assembly comprises a water supply device and a plurality of third electromagnetic valves;

the water supply device is provided with a plurality of water supply ports so as to output water flows with different flow rates; each water supply port is correspondingly communicated with a third electromagnetic valve and is communicated with the channel of the first positioning block through the third electromagnetic valve; and each third electromagnetic valve controls the communication between each water supply port and the channel of the first positioning block so as to realize the opening and closing of the water inlet assembly and switch and output water flows with different flow rates.

9. The instant component testing machine as defined in claim 8, wherein: each water supply port of the water inlet assembly is provided with a built-in flowmeter; the controller is in signal connection with the built-in flowmeter to obtain the flow value of the water flow output by the water inlet assembly.

10. The instant component testing machine as defined in claim 1, wherein: the instant heating component is provided with a heating pipe and connecting terminals led out from two ends of the heating pipe; the testing machine further comprises a resistance value measuring instrument, and two measuring terminals of the resistance value measuring instrument are correspondingly and electrically connected with the two wiring terminals so as to measure the resistance value of the heating pipe.

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