Device and method for detecting water outlet effect

Abstract

The invention discloses a device and method for detecting a water outlet effect, the device comprises a first air pipe and a second air pipe which are arranged in parallel, the pressure of the air inlet ends of the first air pipe and the second air pipe is the same, the air outlet end of the first air pipe is used for connecting a product to be detected, and the air outlet end of the second air pipe is used for connecting a standard good product; a first air inlet valve and a first switch valve are sequentially arranged on the first air pipe in the airflow direction, and a second air inlet valve and a second switch valve are sequentially arranged on the second air pipe in the airflow direction. One end of the communicating pipe is communicated with a first air pipe located between the first air inlet valve and the first switch valve, and the other end of the communicating pipe is communicated with a second air pipe located between the second air inlet valve and the second switch valve; a differential pressure sensor is arranged on the communicating pipe, the method mainly comprises the three steps of standard comparison, inflation and deflation, the testing precision can be improved, and the water outlet effect of the bathroom product can be well detected.

Description

Technical Field

[0001] The present invention relates to a device and method for detecting the water outlet effect, and more specifically, a sanitary product is detected by means of active air release. Background Art

[0002] The existing detection technology for the water outlet effect of sanitary products mainly determines whether there are defects or leaks in the water outlet water flowers by means of manual observation or detection of the water outlet pressure after water testing. The biggest defect of the existing detection method is the low efficiency of product water testing, the low level of detection automation, and the subsequent drying process of the product after water testing is time-consuming and prone to residual water, resulting in the phenomenon of residual water evaporation after product packaging and transportation. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a device and method for detecting the water outlet effect.

[0004] The present invention is achieved through the following technical solutions:

[0005] A device for detecting the water outlet effect includes a first air pipe and a second air pipe arranged in parallel. The pressures at the inlet ends of the first air pipe and the second air pipe are the same. The outlet end of the first air pipe is used to connect the product to be tested, and the outlet end of the second air pipe is used to connect the standard good product; a first inlet valve and a first switch valve are sequentially arranged on the first air pipe along the air flow direction, and a second inlet valve and a second switch valve are sequentially arranged on the second air pipe along the air flow direction; a connecting pipe is further included. One end of the connecting pipe is connected to the first air pipe between the first inlet valve and the first switch valve, and the other end of the connecting pipe is connected to the second air pipe between the second inlet valve and the second switch valve; a differential pressure sensor is arranged on the connecting pipe.

[0006] In an embodiment of the present invention, an inlet air pipe is further included. The outlet end of the inlet air pipe can be connected to the inlet ends of the first air pipe and the second air pipe. The water inlet end of the inlet air pipe is connected to an air storage tank for storing compressed air.

[0007] In an embodiment of the present invention, an air source pressure sensor and an electronic pressure regulator are arranged on the inlet air pipe, and the lengths of the first air pipe and the second air pipe can be adjusted.

[0008] In an embodiment of the present invention, a pressure sensor is arranged on the connecting pipe or the first air pipe and the second air pipe behind the connecting pipe; in the ventilation state, by adjusting the lengths of the first air pipe and the second air pipe, the numerical relationship between the pressure sensor and the air source pressure sensor can be adjusted.

[0009] The present invention also discloses another technical feature:

[0010] A method for detecting the water outlet effect includes the following steps:

[0011] S10, Calibration: By adjusting the lengths of the first air pipe and the second air pipe, then placing standard good products at the air outlet ends of the first air pipe and the second air pipe, and simultaneously deflating to make the differential pressure value △P displayed by the differential pressure sensor. The differential pressure value △P is used as the differential pressure standard for calibration and storage for use as a reference during product testing.

[0012] S20, Inflation: Adjust the electronic pressure regulating valve to set the pressure to P0, open the first intake valve and the second intake valve, close the first switching valve and the second switching valve, and keep the electronic pressure regulating valve at the value of P0 before testing.

[0013] S30, Deflation: Replace the standard good product at the air outlet end of the first air pipe with the product to be tested, open the first switching valve and the second switching valve to make the first air pipe and the second air pipe in a ventilated state, then read the value P of the differential pressure sensor, and compare the value P with △P to judge the water outlet effect of the product to be tested.

[0014] In the embodiment of the present invention, before S30, it further includes S21, Deflation Detection: After S20, open the first switching valve and the second switching valve to make the first air pipe and the second air pipe in a ventilated state. If the pressure at the air outlet end of the gas storage tank drops below the value P0, at this time, the electronic pressure regulating valve cannot provide normal pressure, and the entire device stops working and gives an alarm.

[0015] In the embodiment of the present invention, in S10, the value of the pressure sensor is P1, and by adjusting the lengths of the first air pipe and the second air pipe, the value P1 is made to be one-third of the value P0.

[0016] In the embodiment of the present invention, in S30, the value P is the average value of multiple readings of the differential pressure sensor.

[0017] An apparatus and method for detecting the water outlet effect of the present invention have the following beneficial effects: 1. By means of active deflation and comparative testing, the differential pressure (water splash loss) between the product and the standard good product is tested, reflecting the slight difference in the deflation flow rates of the product and the standard good product, and further judging the water outlet effect of the test product. 2. By using a gas storage tank, an electronic pressure regulating valve with a large flow ratio, and monitoring the gas source pressure in real time, it is ensured that there is sufficient deflation flow rate and stability during the deflation stability and testing stages. 3. A micro-range differential pressure sensor with positive and negative values is adopted to improve the testing accuracy. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the present invention. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the implementation manners of the present invention clearer, the technical solutions in the implementation manners of the present invention will be clearly and completely described below with reference to the accompanying drawings in the implementation manners of the present invention. Obviously, the described implementation manners are some but not all of the implementation manners of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Therefore, the following detailed description of the implementation manners of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected implementation manners of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0023] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0025] Referring to the accompanying drawings of the specification Figure 1 , a device for detecting the water outlet effect, comprising a first air pipe 10 and a second air pipe 20 arranged in parallel, so that the pressure entering the two air pipes can be made consistent. The first air pipe and the second air pipe are both deflated by the same air source. The pressures at the inlet ends of the first air pipe and the second air pipe are the same. The outlet end of the first air pipe is used to connect to the product A to be tested, and the outlet end of the second air pipe is used to connect to the standard good product B; a first inlet valve 11 and a first switch valve 12 are sequentially arranged on the first air pipe along the air flow direction, and a second inlet valve 21 and a second switch valve 22 are sequentially arranged on the second air pipe along the air flow direction; a connecting pipe 30 is further included. One end of the connecting pipe is connected to the first air pipe between the first inlet valve and the first switch valve, and the other end of the connecting pipe is connected to the second air pipe between the second inlet valve and the second switch valve; a differential pressure sensor 31 is arranged on the connecting pipe, and the digital value of the differential pressure sensor can detect the pressure difference at the rear ends of the two air pipes after deflation.

[0026] Preferably, an inlet air pipe 40 is further included. The outlet end of the inlet air pipe can be connected to the inlet ends of the first air pipe and the second air pipe. The water inlet end of the inlet air pipe is connected to an air storage tank 50, and the air storage tank is used to store compressed air. A gas source pressure sensor 41 and an electronic pressure regulating valve 42 are arranged on the inlet air pipe. The lengths of the first air pipe and the second air pipe can be adjusted, so that the relationship between the pressures at the two outlet ends and the inlet end can be adjusted.

[0027] Furthermore, a pressure sensor 60 is arranged on the connecting pipe or on the first air pipe and the second air pipe behind the connecting pipe; in the ventilation state, by adjusting the lengths of the first air pipe and the second air pipe, the numerical relationship between the pressure sensor and the gas source pressure sensor can be adjusted, and the pressure loss and pressure drop after deflation can be known. At the same time, an alarm device can be added to remind whether the current state of the device is suitable for detecting the conditions of the product to be tested.

[0028] The present invention also discloses another technical feature:

[0029] A method for detecting the water outlet effect, comprising the following steps:

[0030] S10, comparison: by adjusting the length of the first air pipe and the second air pipe, and then placing standard good products at the air outlet ends of the first air pipe and the second air pipe, and at the same time releasing air to make the differential pressure sensor display the differential pressure value △P, the differential pressure value △P is used as the differential pressure standard for comparison and storage, so as to prepare for the benchmark when testing the product;

[0031] S20, charging: adjusting the electronic pressure regulating valve to set the pressure to P0, opening the first air intake valve and the second air intake valve, and closing the first switch valve and the second switch valve, so that the electronic pressure regulating valve is kept at the value of P0 before testing;

[0032] S30, deflation: replace the standard good product at the outlet end of the first air pipe with the product to be tested, open the first switch valve and the second switch valve to put the first air pipe and the second air pipe in a ventilation state, then read the value P of the differential pressure sensor, and compare the value P with △P to determine the water outlet effect of the product to be tested.

[0033] Preferably, before S30, it also includes S21, deflation detection: after S20, open the first switch valve and the second switch valve to put the first air pipe and the second air pipe in a ventilated state. If the pressure at the outlet of the gas storage tank (the value displayed by the gas source pressure sensor) drops below the value P0, the electronic pressure regulating valve at this time cannot provide normal pressure, and the entire device stops working and alarms. In S10, the value of the pressure sensor is P1. By adjusting the length of the first air pipe and the second air pipe, the value P1 is made one third of the value P0. In S30, the value P is the average value of the differential pressure sensor values ​​read multiple times.

[0034] The present invention is more specifically:

[0035] 1. Adjustment and calibration of air pipes: Before testing the splash effect of a product, it is necessary to adjust the length of the two air pipes and calibrate the good products once. When the test end and the standard end are actively deflated at the same time, by adjusting the length of the first air pipe and the second air pipe, the pressure measured by the corresponding deflated sensor is about 1 / 3 of the set air pressure, that is, P1 = 1 / 3P0. In this deflation state, the differential pressure value caused by the slight change in the exhaust flow rate at the test end will reach the maximum value, which is conducive to improving the test accuracy. After the length of the two air pipes is adjusted, the differential pressure value △P of the good product at the test end and the good product at the standard end is deflated at the same time. Note that both air pipes here use good products. Under normal circumstances, △P should be zero, but in fact, due to the zero drift of the differential pressure sensor and the slight difference in the structure of the test and standard ends, the actual value is not necessarily zero. The obtained △P is used as the differential pressure standard for comparison and storage, in preparation for the benchmark during product testing.

[0036] 2. Inflation: Adjust the electronic pressure regulating valve to the set inflation pressure P0. Open the first intake valve at the test end and the second intake valve at the standard end, and close the first switching valve at the test end and the second switching valve at the standard end, so that the system has a stable set pressure before deflation.

[0037] 3. Stable deflation: The electronic pressure regulating valve continues to work. At the set inflation pressure, the first intake valve and the second intake valve remain open. At the same time, open the first switching valve and the second switching valve to deflate the system. The stable deflation time is generally within 2 - 3 seconds, and both ends of the entire device can enter a stable deflation state. To ensure that there is sufficient stable deflation flow in the system during the pressure stabilization and test deflation stages, a pressure sensor is set at the gas source end to monitor its pressure. During the stable deflation and deflation test stages, if the gas source pressure drops below the set charging and deflation pressure, at this time, the electronic pressure regulating valve cannot provide the set charging and deflation pressure for the device, and the system will stop the test process and alarm through the alarm device.

[0038] 4. Deflation test: The electronic voltage method, the first intake valve and the second intake valve, the first switching valve and the second switching valve all maintain the working state of being open. Read the average value P of the differential pressure sensor during the deflation test stage. Subtract the differential pressure value stored during calibration from this average value to obtain the water splash loss pressure drop S of the tested product. When the tested water splash loss pressure drop is positive and greater than the set water splash pressure drop standard, it is judged that the water outlet effect of the product has weak defects (such as these situations: blocked holes, oblique shooting or bifurcation, etc.). When the tested water splash loss pressure drop is negative and less than the water splash leakage standard (this standard is negative), it is judged that the water outlet effect of the product has leakage defects (such as these situations: the water outlet hole is damaged and enlarged or there is obvious leakage, etc.).

[0039] After the test, during the test of good products, the fluctuation range of the differential pressure is within -50 - 50 Pa, and the value of S is within this range. The product to be tested can be a good product. If the differential pressure of the defective product with weak water splash defects is greater than 300 Pa, and the differential pressure of the defective product with water splash leakage is less than -300 Pa, then this product to be tested is a defective product.

[0040] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims

1. A device for detecting water discharge effect, characterized in that: It includes a first air pipe and a second air pipe arranged in parallel, the pressures at the air inlet ends of the first air pipe and the second air pipe are the same, the air outlet end of the first air pipe is used to connect the product to be tested, and the air outlet end of the second air pipe is used to connect the standard good product; the first air pipe is provided with a first air inlet valve and a first switch valve in sequence along the air flow direction, and the second air pipe is provided with a second air inlet valve and a second switch valve in sequence along the air flow direction; it also includes a connecting pipe, one end of the connecting pipe is connected to the first air pipe located between the first air inlet valve and the first switch valve, and the other end of the connecting pipe is connected to the second air pipe located between the second air inlet valve and the second switch valve; a differential pressure sensor is provided on the connecting pipe.

2. A device for detecting water discharge effect according to claim 1, characterized in that: It also includes an air inlet pipe, the air outlet end of the air inlet pipe can be connected to the air inlet ends of the first air pipe and the second air pipe, the water inlet end of the air inlet pipe is connected to an air storage tank, and the air storage tank is used to store compressed air.

3. A device for detecting water discharge effect according to claim 2, characterized in that: The air intake pipe is provided with an air source pressure sensor and an electronic pressure regulating valve, and the lengths of the first air pipe and the second air pipe can be adjusted.

4. The device for detecting water discharge effect according to claim 3, characterized in that: The connecting pipe or the first air pipe and the second air pipe located at the rear side of the connecting pipe are provided with a pressure sensor; in the ventilation state, the numerical relationship between the pressure sensor and the air source pressure sensor can be adjusted by adjusting the length of the first air pipe and the second air pipe.

5. A method for detecting water discharge effect, characterized in that: The following steps are involved: S10, comparison: by adjusting the length of the first air pipe and the second air pipe, and then placing standard good products at the air outlet ends of the first air pipe and the second air pipe, and at the same time releasing air to make the differential pressure sensor display the differential pressure value △P, the differential pressure value △P is used as the differential pressure standard for comparison and storage, so as to prepare for the benchmark when testing the product; S20, charging: adjusting the electronic pressure regulating valve to set the pressure to P0, opening the first air intake valve and the second air intake valve, and closing the first switch valve and the second switch valve, so that the electronic pressure regulating valve is kept at the value of P0 before testing; S30, deflation: replace the standard good product at the outlet end of the first air pipe with the product to be tested, open the first switch valve and the second switch valve to put the first air pipe and the second air pipe in a ventilation state, then read the value P of the differential pressure sensor, and compare the value P with △P to determine the water outlet effect of the product to be tested.

6. A method for detecting water discharge effect according to claim 5, characterized in that: Before S30, it also includes S21, deflation detection: after S20, open the first switch valve and the second switch valve to put the first air pipe and the second air pipe in a ventilation state. If the pressure at the air outlet of the air storage tank drops below the value P0, the electronic pressure regulating valve at this time cannot provide normal pressure, the entire device stops working and alarms.

7. A method for detecting water discharge effect according to any one of claims 5 or 6, characterized in that: In S10, the value of the pressure sensor is P1, and the value P1 is made one third of the value P0 by adjusting the lengths of the first air pipe and the second air pipe.

8. A method for detecting water discharge effect according to claim 7, characterized in that: In S30 , the value P is an average value of the values ​​of the differential pressure sensor read multiple times.

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