CN117110066A

CN117110066A - Filter element testing system and method

Info

Publication number: CN117110066A
Application number: CN202311325316.3A
Authority: CN
Inventors: 张洁君; 刘社军; 韦广林
Original assignee: Foshan Xinyao Environmental Protection Technology Co Ltd
Current assignee: Foshan Xinyao Environmental Protection Technology Co Ltd
Priority date: 2023-10-12
Filing date: 2023-10-12
Publication date: 2023-11-24

Abstract

The invention relates to a filter element testing system and a method, which can improve the efficiency of filter element testing; the system comprises a pure water waterway, and comprises a water inlet electromagnetic valve, a first booster pump and a composite filter element which are sequentially arranged; the device also comprises a second booster pump and an RO filter element communicated with the second booster pump, wherein the water inlet end of the second booster pump is communicated with the composite filter element, and the water outlet end of the RO filter element is communicated with the composite filter element; a wastewater waterway which is communicated with a wastewater port of the RO filter element and is provided with a wastewater electromagnetic valve; and the electric control system comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and an electric control module, wherein the first electromagnetic valve is communicated with the water outlet end of the composite filter element, one end of the second electromagnetic valve is respectively communicated with the water inlet electromagnetic valve and the first booster pump, one end of the third electromagnetic valve is respectively communicated with the water inlet end of the second booster pump and the RO filter element, and the electric control module is respectively connected with the water inlet electromagnetic valve, the first booster pump, the second booster pump, the waste water electromagnetic valve, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve.

Description

Filter element testing system and method

Technical Field

The invention relates to the technical field of intelligent testing of filter elements, in particular to a filter element testing system and method.

Background

At present, after the filter element is produced, in order to ensure the quality of the filter element, a plurality of filter element products with the same batch and the same model are usually required to be tested.

The prior patent with publication number of CN217385133U discloses a filter element reliability testing device, which can flexibly perform reliability testing, service life testing and other testing on different filter element module combinations and different water system conditions in a filter element product through serial connection and matching of a front filter element module, an RO filter element module and a rear filter element module.

The prior art solutions described above have the following drawbacks: because the preposed filter element module, the RO filter element module and the postposed filter element module are matched in series, the reliability test of the preposed filter element module, the RO filter element module, the preposed filter element module, the RO filter element module and the postposed filter element module can only be carried out, and more tests are difficult to carry out. For this purpose, a filter cartridge testing system and method are proposed which enable a variety of reliability tests to be performed on the filter cartridge.

Disclosure of Invention

Based on this, it is an object of the present invention to provide a cartridge testing system and method that enables multiple tests to be performed for different cartridges.

The above object of the present invention is achieved by the following technical solutions:

A cartridge testing system comprising:

the pure water waterway is provided with a raw water inlet end and a pure water outlet end and comprises a water inlet electromagnetic valve, a first booster pump and a composite filter element which are sequentially arranged; the pure water waterway also comprises a second booster pump and an RO filter element communicated with the second booster pump, the water inlet end of the second booster pump is communicated with the composite filter element, and the water outlet end of the RO filter element is communicated with the composite filter element;

the waste water channel is provided with a waste water inlet end and a waste water outlet end, the waste water inlet end of the waste water channel is communicated with a waste water port of the RO filter element, and the waste water channel is provided with a waste water electromagnetic valve;

and the electric control system comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and an electric control module, wherein the water inlet end of the first electromagnetic valve is communicated with the water outlet end of the composite filter element, one end of the second electromagnetic valve is respectively communicated with the water inlet electromagnetic valve and the first booster pump, one end of the third electromagnetic valve is respectively communicated with the water inlet ends of the second booster pump and the RO filter element, and the electric control module is respectively connected with the water inlet electromagnetic valve, the first booster pump, the second booster pump, the wastewater electromagnetic valve, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve.

The invention is further provided with: the device also comprises a first pressure gauge and a second pressure gauge; the first pressure gauge is arranged between the first booster pump and the composite filter element and is used for detecting the pressure value between the first booster pump and the composite filter element; the second pressure gauge is arranged between the second booster pump and the RO filter element and is used for detecting the pressure value between the second booster pump and the RO filter element; the first pressure gauge and the second pressure gauge are both connected with the electronic control module.

The invention is further provided with: the composite filter element comprises a preposed filter element and a postposition filter element, wherein the preposed filter element is connected between the first booster pump and the second booster pump, and the postposition filter element is connected between the water outlet end of the RO filter element and the first electromagnetic valve.

The invention is further provided with: the filter further comprises a fourth electromagnetic valve, two ends of the fourth electromagnetic valve are respectively communicated with the water outlet end of the front filter element and the second booster pump, and the fourth electromagnetic valve is connected with the electronic control module.

the filter element testing method is applied to the filter element testing system and is used for performing air tightness test on the filter element testing system and comprises the following steps:

step one: the electric control module controls the water inlet electromagnetic valve, the first electromagnetic valve and the waste water electromagnetic valve to be opened, controls the second electromagnetic valve and the third electromagnetic valve to be closed, and controls the first booster pump and the second booster pump to be opened;

step two: the electronic control module reads the pressure values detected by the first pressure gauge and the second pressure gauge, judges whether the pressure values are stabilized in a preset pressure range, and if the pressure values are stabilized in the preset pressure range and the water flow rate discharged by the pure water outlet end of the pure water waterway is also stabilized in the preset flow rate range, passes the air tightness test;

Step three: the electric control module controls the closing of the water inlet electromagnetic valve, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the waste water electromagnetic valve according to the stable detection values detected by the first pressure gauge and the second pressure gauge, and controls the closing of the first booster pump and the second booster pump.

the filter element testing method is applied to the filter element testing system and is used for performing high-pressure testing on the filter element testing system and comprises the following steps:

step one: the electric control module controls the water inlet electromagnetic valve to be opened and controls the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the waste water electromagnetic valve to be closed, and the electric control module controls the first booster pump and the second booster pump to be opened;

step two: the electronic control module reads the pressure values detected by the first pressure gauge and the second pressure gauge and judges whether the pressure values reach a preset target value in the high-pressure test; when the pressure values detected by the first pressure gauge and the second pressure gauge reach target values preset in the high-pressure test, the high-pressure test is passed;

step three: the electric control module controls the closing of the water inlet electromagnetic valve, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the waste water electromagnetic valve according to target values detected by the first pressure gauge and the second pressure gauge, and controls the closing of the first booster pump and the second booster pump.

the filter element testing method is applied to the filter element testing system and is used for carrying out low-pressure test on the filter element testing system and comprises the following steps:

step one: the electric control module controls the water inlet electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to be opened and controls the first electromagnetic valve and the waste water electromagnetic valve to be closed, and the electric control module controls the first booster pump and the second booster pump to be opened;

step two: the electronic control module reads that the detected pressure values of the first pressure gauge and the second pressure gauge reach target values preset in the low-pressure test; when the pressure values detected by the first pressure gauge and the second pressure gauge reach the target value preset in the low-pressure test, the low-pressure test is passed;

the filter element testing method is applied to the filter element testing system and is used for performing water pressure impact resistance test on a front filter element of the filter element testing system, and comprises the following steps:

Step one: the electric control module controls the water inlet electromagnetic valve and the waste water electromagnetic valve to be opened and controls the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to be closed, and controls the first booster pump to be opened and controls the second booster pump to be closed;

step two: the electronic control module reads the pressure value detected by the first pressure gauge and judges whether the pressure value reaches a preset target value in a water pressure impact resistance test of the front filter element; if the target value is reached, the test is passed through the water pressure impact resistance test preliminarily;

step three: the electric control module controls the water inlet electromagnetic valve, the first electromagnetic valve, the third electromagnetic valve and the waste water electromagnetic valve to be closed and controls the second electromagnetic valve to be opened according to the target value detected by the first pressure gauge, and the electric control module controls the first booster pump and the second booster pump to be closed;

step four: the electronic control module reads the pressure values detected by the first pressure gauge and the second pressure gauge and judges whether the pressure values drop to preset set values in the water pressure impact resistance test of the front filter element or not; if the pressure value is reduced to the set value, the complete water pressure impact resistance test is finally passed.

the filter element testing method is applied to the filter element testing system and is used for performing water pressure impact resistance test on a rear filter element of the filter element testing system, and comprises the following steps:

Step one: the electric control module controls the water inlet electromagnetic valve and the waste water electromagnetic valve to be opened and controls the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to be closed, and the electric control module controls the first booster pump and the second booster pump to be opened;

step two: the electronic control module reads the pressure value detected by the second pressure gauge and judges whether the pressure value reaches a preset target value in the water pressure impact resistance test of the rear filter element; if the target value is reached, the test is passed through the water pressure impact resistance test preliminarily;

step three: the electric control module controls the water inlet electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve to be closed and controls the third electromagnetic valve and the waste water electromagnetic valve to be opened according to the target value measured by the second pressure gauge, and the electric control module controls the first booster pump and the second booster pump to be closed;

step four: the electronic control module reads the pressure values detected by the first pressure gauge and the second pressure gauge and judges whether the pressure values drop to a preset set value in the water pressure impact resistance test of the rear filter element, if the pressure values drop to the set value, the complete water pressure impact resistance test is finally passed.

the filter element testing method is applied to the filter element testing system and is used for performing water pressure impact resistance test on the RO filter element, and comprises the following steps:

step two: the electronic control module reads the pressure value detected by the second pressure gauge and judges whether the pressure value reaches a target value preset in the RO filter core water pressure impact resistance test; if the target value is reached, the test is passed through the water pressure impact resistance test preliminarily;

step three: the electric control module controls the water inlet electromagnetic valve, the first electromagnetic valve, the second electromagnetic valve and the waste water electromagnetic valve to be closed and controls the third electromagnetic valve to be opened according to the target value measured by the second pressure gauge, and the electric control module controls the first booster pump and the second booster pump to be closed;

step four: the electronic control module reads the pressure values detected by the first pressure gauge and the second pressure gauge and judges whether the pressure values are reduced to a preset set value in the RO filter core water pressure impact resistance test, if the pressure values are reduced to the set value, the integrated water pressure impact resistance test is finally passed.

the filter element testing method is applied to the filter element testing system and is used for performing blasting test on a filter element barrel of an RO filter element and a composite barrel of a composite filter element, and comprises the following steps:

step two: the electronic control module reads the detected pressure values of the first pressure gauge and the second pressure gauge and judges whether the pressure values reach a preset target value in the blasting test; if the target value is reached, passing the blasting test;

step three: the electric control module controls the closing of the water inlet electromagnetic valve, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the waste water electromagnetic valve according to target values detected by the first pressure gauge and the second pressure gauge, and controls the closing of the first booster pump and the second booster pump and keeps preset time;

step four: the electric control module controls the second electromagnetic valve and the third electromagnetic valve to be opened and controls the water inlet electromagnetic valve, the first electromagnetic valve and the waste water electromagnetic valve to be closed, and the electric control module controls the first booster pump and the second booster pump to be closed.

In summary, the beneficial technical effects of the application are as follows:

compared with the prior art, the system and the method for testing the filter element can perform exhaust test, high-pressure test, low-pressure test, front-end filter element water pressure impact test, rear-end filter element water pressure impact test, RO filter element water pressure impact test and filter element barrel explosion test, so that the system can realize reliability test on various filter elements, and can test different filter elements according to the requirements, thereby not only testing the strength of the filter element, but also testing the strength of a filter element barrel; the system is not required to be independently arranged for testing different filter elements, so that the experience of testing the filter elements is improved, the efficiency of testing the filter elements is improved, and the applicability of the system to testing different filter elements is optimized.

The existing instrument for testing the filter element at high and low pressure is high in price, the water hammer testing machine is high in price, each device (comprising the instrument and the machine) occupies more space, namely the existing device for testing the filter element is high in price and occupies more space; the system of the application is only one system, has no excessive machine shell or rack, only has core devices (such as electromagnetic valve, booster pump, pressure gauge and the like) for testing the filter element, and has relatively low price and small occupied area, so the system has low price and small occupied area. The existing equipment for testing the filter element has larger power, many of the equipment still have 380V, special wiring is needed, the investment of the equipment is large, and the operation cost and the maintenance cost are high; the test system of the application has relatively small investment, low power (less than 1 kilowatt) and low running cost and maintenance cost; the test system can realize the multifunction of a plurality of devices, not only can meet the requirements of high-pressure test, low-pressure test, front filter element water pressure impact resistance test, rear filter element water pressure impact resistance test, RO filter element water pressure impact resistance test and filter element barrel explosion test, but also can simulate the normal use mode of the filter element.

The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will become apparent by reference to the drawings and the following detailed description.

Drawings

In the drawings, the same reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily drawn to scale. It is appreciated that these drawings depict only some embodiments according to the disclosure and are not therefore to be considered limiting of its scope.

FIG. 1 is a circuit diagram of a test system of the present application (including the internal structure of a composite filter cartridge);

FIG. 2 is a circuit diagram of a test system of the present application including a fourth solenoid valve.

In the figure, 1, a water inlet electromagnetic valve; 2. a first booster pump; 3. a composite filter element; 31. a filter element is arranged in front; 32. a rear filter element; 4. a second booster pump; 5. RO filter core; 6. a waste water electromagnetic valve; 7. a first electromagnetic valve; 8. a second electromagnetic valve, 9, a third electromagnetic valve, 10 and a fourth electromagnetic valve; 11. a first pressure gauge; 12. and a second pressure gauge.

Detailed Description

Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible mentioned in this specification are defined with respect to their construction, and they are relative concepts. Therefore, the position and the use state of the device may be changed accordingly. These and other directional terms should not be construed as limiting terms.

The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of implementations consistent with aspects of the present disclosure.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

Referring to fig. 1, a filter element testing system disclosed by the invention comprises a pure water waterway, a waste water waterway and an electric control system. The pure water waterway is provided with a raw water inlet end and a pure water outlet end, and comprises a water inlet electromagnetic valve 1, a first booster pump 2 and a composite filter element 3 which are sequentially arranged; the pure water waterway further comprises a second booster pump 4 and an RO filter element 5 communicated with the second booster pump 4, wherein the water inlet end of the second booster pump 4 is communicated with the composite filter element 3, and the water outlet end of the RO filter element 5 is communicated with the composite filter element 3; the composite filter element 3 comprises a preposed filter element 31, a postposed filter element 32 and a composite barrel, wherein the preposed filter element 31 and the postposed filter element 32 are both arranged in the composite barrel, the water inlet end of the second booster pump 4 is communicated with the water outlet end of the preposed filter element 31, and the water outlet end of the first booster pump 2 is communicated with the water inlet end of the preposed filter element 31; the water outlet end of the RO filter element 5 is communicated with the water inlet end of the rear filter element 32, and the water outlet end of the rear filter element 32 is communicated with the first electromagnetic valve; the RO filter core 5 comprises a filter core barrel and an RO membrane arranged in the filter core barrel. The waste water way is provided with a waste water inlet end and a waste water outlet end, the waste water inlet end of the waste water way is communicated with a waste water port of the RO filter element 5, and the waste water way is provided with a waste water electromagnetic valve 6. The electric control system comprises a first electromagnetic valve 7, a second electromagnetic valve 8, a third electromagnetic valve 9 and an electric control module, wherein the water inlet end of the first electromagnetic valve 7 is communicated with the water outlet end of the composite filter element 3, namely the water inlet end of the first electromagnetic valve 7 is communicated with the water outlet end of the rear filter element 32; one end of the second electromagnetic valve 8 is respectively communicated with the water inlet electromagnetic valve 1 and the first booster pump 2; one end of the third electromagnetic valve 9 is respectively communicated with the water outlet end of the second booster pump 4 and the water inlet end of the RO filter element 5; the electric control module is respectively connected with a water inlet electromagnetic valve 1, a first booster pump 2, a second booster pump 4, a waste water electromagnetic valve 6, a first electromagnetic valve 7, a second electromagnetic valve 8 and a third electromagnetic valve 9; the electric control module is used for controlling the opening and closing of the water inlet electromagnetic valve 1, the waste water electromagnetic valve 6, the first electromagnetic valve 7, the second electromagnetic valve 8 and the third electromagnetic valve 9 and controlling the opening and closing of the first booster pump 2 and the second booster pump 4.

Further, the intelligent pressure meter further comprises a first pressure meter 11 and a second pressure meter 12, wherein the first pressure meter 11 and the second pressure meter 12 are intelligent pressure meters; the first pressure gauge 11 is arranged between the first booster pump 2 and the composite filter element 3, and the first pressure gauge 11 is used for detecting the pressure value between the first booster pump 2 and the composite filter element 3; a second pressure gauge 12 is arranged between the second booster pump 4 and the RO filter core 5, and the second pressure gauge 12 is used for detecting the pressure value between the second booster pump 4 and the RO filter core 5; the first pressure gauge 11 and the second pressure gauge 12 are both connected with the electronic control module, so that the electronic control module can read the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12.

The invention provides a filter element testing method which is applied to the filter element testing system and is used for testing the air tightness of the filter element testing system and discharging all air in the filter element testing system. The testing method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7 and the waste water electromagnetic valve 6 to be opened, controls the second electromagnetic valve 8 and the third electromagnetic valve 9 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be opened.

Raw water enters a pure water channel through a water inlet electromagnetic valve 1 and enters a composite filter element 3 through the pressurizing action of a first booster pump 2, namely, the raw water enters a pre-filter element 31 and is filtered through the pre-filter element 31; because of the adsorption effect of the second booster pump 4, water in the front filter element 31 enters the RO filter element 5 through the pressurization effect of the second booster pump 4, pure water and waste water are formed after the RO filter element 5 filters the water, the pure water is discharged from the first electromagnetic valve 7 after being filtered by the rear filter element 32, and the waste water enters a waste water waterway and is discharged through the waste water electromagnetic valve 6.

(2) The detected pressure values of the first pressure gauge 11 and the second pressure gauge 12 are stable, and the flow rate of the pure water outlet end of the pure water waterway is stable; generally, the water flow rate discharged from the pure water outlet end of the pure water waterway is stable, namely, the air in the filter element testing system is completely discharged.

(3) The electric control module controls the closing of the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 according to the stable detection values detected by the first pressure gauge 11 and the second pressure gauge 12, and controls the closing of the first booster pump 2 and the second booster pump 4; when the air in the filter element testing system is completely discharged, the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 are closed, and the first booster pump 2 and the second booster pump 4 are closed, so that the air is limited to enter the filter element testing system again.

The invention provides a filter element testing method which is applied to the filter element testing system and is used for performing high-pressure testing on the filter element testing system, in particular to performing high-pressure testing on a composite filter element 3, an RO filter element 5 and the like. Generally, before the high-pressure test is performed, all air in the filter element test system needs to be exhausted according to the air exhaust method, and then the high-pressure test is performed on the system according to the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1 to be opened and controls the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed, and the electric control module controls the first booster pump 2 and the second booster pump 4 to be opened.

Raw water enters a pure water channel through a water inlet electromagnetic valve 1 and enters a composite filter element 3 through the pressurizing action of a first booster pump 2, namely, the raw water enters a pre-filter element 31 and is filtered through the pre-filter element 31; because of the adsorption effect of the second booster pump 4, the water in the front filter element 31 enters the RO filter element 5 through the pressurization effect of the second booster pump 4, and the water enters the rear filter element 32 after being filtered by the RO filter element 5; because the first electromagnetic valve 7 is closed, water in the rear filter element 32 cannot flow out of the filter element testing system and the first booster pump 2 and the second booster pump 4 continuously work, so that the pressure value in the filter element testing system is larger and larger, namely the detected pressure value of the first pressure gauge 11 and the second pressure gauge 12 is larger and larger.

(2) The detected pressure values of the first pressure gauge 11 and the second pressure gauge 12 reach the target values.

Typically, after the operation of step (1) for a period of time, such as 20 minutes, the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 reach the target values; wherein the target value is a value set to meet the high voltage test, and a person skilled in the art can set different target values according to the needs of the high voltage test.

(3) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed according to target values detected by the first pressure gauge 11 and the second pressure gauge 12, and the electric control module controls the first booster pump 2 and the second booster pump 4 to be closed.

The electronic control module judges the read pressure values of the first pressure gauge 11 and the second pressure gauge 12 in real time, compares the pressure values with a preset target value, and if the first pressure gauge 11 and/or the second pressure gauge 12 cannot reach the target value, the filter element test system cannot pass the high-pressure test; when the electronic control module reads that the first pressure gauge 11 and the second pressure gauge 12 both detect target values, which represents that the filter element test system passes the high-pressure test, the electronic control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed and controls the first booster pump 2 and the second booster pump 4 to be closed, so that the whole high-pressure test flow of the composite filter element 3 and the RO filter element 5 is completed.

The invention provides a filter element testing method which is applied to the filter element testing system and is used for carrying out low-pressure testing on the filter element testing system, in particular to carrying out low-pressure testing on a composite filter element 3, an RO filter element 5 and the like. In general, the air in the cartridge testing system needs to be exhausted entirely before the low pressure test is performed, and the exhaust method has been described above and will not be repeated here; the low-voltage testing method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1, the second electromagnetic valve 8 and the third electromagnetic valve 9 to be opened, controls the first electromagnetic valve 7 and the waste water electromagnetic valve 6 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be opened.

Since the second electromagnetic valve 8 is opened, after raw water enters the pure water waterway through the water inlet electromagnetic valve 1, the raw water contacts with air, and if the raw water is not supplied sufficiently, the first booster pump 2 can suck air into the pure water waterway; the water in the pure water waterway enters the preposed filter element 31 through the action of the first booster pump 2, because the adsorption of the second booster pump 4 and the third electromagnetic valve 9 are opened, part of the water in the preposed filter element 31 enters the RO filter element 5 through the pressurization of the second booster pump 4, and the other part of the water flows out through the third electromagnetic valve 9, and at the moment, the action of the third electromagnetic valve 9 is equivalent to a water outlet, so as to play a role of diversion and decompression. The water entering the RO filter element 5 is filtered by the RO filter element 5 and then enters the post filter element 32. Because the first electromagnetic valve 7 and the waste water electromagnetic valve 6 are closed and the third electromagnetic valve 9 is opened, water in the composite filter element 3 cannot be discharged from the first electromagnetic valve 7, water in the post filter element 32 and the RO filter element 5 cannot flow back to the pre filter element 31 due to the action of the second booster pump 4, water in the post filter element 32 can only flow out of the third electromagnetic valve 9, and water in the subsequent pre filter element 31 is continuously discharged from the third electromagnetic valve 9 through the second booster pump 4, so that the pressure value in the filter element testing system is smaller and smaller, namely the detected pressure value of the first pressure gauge 11 and the second pressure gauge 12 is smaller and smaller.

(2) The pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 reach the target values.

Typically, after the operation of step (1) for a period of time, such as 20 minutes, the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 reach the target values; wherein the target value is a value set to meet the low-voltage test, and one skilled in the art can set different target values according to the needs of the low-voltage test.

The electronic control module judges the read pressure values of the first pressure gauge 11 and the second pressure gauge 12 in real time, compares the pressure values with target values set according to the requirement of the low-pressure test, and when the water pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are both the target values, the system passes the low-pressure test; if the pressure value detected by the first pressure gauge 11 and/or the second pressure gauge 12 exceeds the target value, the system cannot pass the low pressure test. After the electronic control module reads that the target values are detected by the first pressure gauge 11 and the second pressure gauge 12, the electronic control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed and controls the first booster pump 2 and the second booster pump 4 to be closed so as to complete the low-pressure test of the filter element test system, thereby completing the low-pressure test of the composite filter element 3 and the RO filter element 5.

The invention provides a filter element testing method which is applied to the filter element testing system and is mainly used for performing a water pressure impact resistance test on a front filter element 31. In general, before the pre-filter element 31 is subjected to the water pressure impact resistance test, the air in the filter element test system needs to be completely exhausted, and the exhausting method is already described above and will not be repeated here; the water pressure resistant impact test method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1 and the waste water electromagnetic valve 6 to be opened and controls the first electromagnetic valve 7, the second electromagnetic valve 8 and the third electromagnetic valve 9 to be closed, and the electric control module controls the first booster pump 2 to be opened and controls the second booster pump 4 to be closed.

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 under the action of the first booster pump 2, and after being pressurized, the raw water enters the pre-filter element 31 and impacts the pre-filter element 31; the first electromagnetic valve 7 and the third electromagnetic valve 9 are closed, and the waste water electromagnetic valve 6 is opened, and although the second booster pump 4 is closed and does not realize the purpose of boosting, the water in the pre-filter element 31 can still enter the RO filter element 5 through the pipeline, and then is discharged from the waste water electromagnetic valve 6.

(2) At this time, the electronic control module reads the pressure value detected by the first pressure gauge 11 and judges whether the pressure value reaches the target value; typically, after a period of operation of step (1), such as 20 minutes of operation, the pressure value detected by the first pressure gauge 11 reaches the target value; the target value is a value set to satisfy the water pressure impact resistance test of the pre-filter 31, and one skilled in the art can set different target values according to the test requirement of the pre-filter 31.

(3) If the pressure value detected by the first pressure gauge 11 cannot reach the target value, which means that the test system cannot realize the effect of water pressure resistance, the water pressure impact resistance test cannot be passed. When the electronic control module reads that the pressure value detected by the first pressure gauge 11 is the target value, the system is indicated to impact the front filter element 31 under certain pressure; thereafter, the water inlet solenoid valve 1, the first solenoid valve 7, the third solenoid valve 9 and the waste water solenoid valve 6 are controlled to be closed, the second solenoid valve 8 is controlled to be opened, and the electronic control module controls the first booster pump 2 and the second booster pump 4 to be closed. Since the second solenoid valve 8 is opened, the pressure value of the pure water path is changed, and the pressure value in the pure water path is generally reduced.

Therefore, the electronic control module reads the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 and judges whether the pressure values drop to the set values. When the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are reduced to the set values, a complete water pressure impact resistance test is completed; if the first pressure gauge 11 and/or the second pressure gauge 12 still cannot drop to the set values in this step, it is also determined that the water pressure impact resistance test is not passed. The set value can be a value set by a person skilled in the art according to the need, or can be a normal value of the pure water waterway in a natural environment; wherein the set value is greater than or equal to the normal value and less than the target value.

The above-mentioned step is accomplished once to the water pressure resistant impact test of leading filter core 31, and usually, the water pressure resistant impact test of leading filter core 31 needs to carry out the water pressure resistant impact test to leading filter core 31 at least twice, therefore, need at least twice above-mentioned step of circulation, in order to promote test system's intelligence, can set up the circulation value at electric control module, the person of skill in the art can set up the circulation value as required for filter core test system carries out the water pressure resistant impact test of at least twice to leading filter core 31 voluntarily, in order to optimize leading filter core 31's test result.

The invention provides a filter element testing method which is applied to the filter element testing system and is mainly used for performing a water pressure impact resistance test on a rear filter element 32. In general, before the post-filter 32 is tested for water pressure impact, all air in the filter testing system needs to be exhausted, and the exhausting method is described above and will not be repeated here; the testing method for the water pressure impact resistance test of the rear filter element 32 comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1 and the waste water electromagnetic valve 6 to be opened and controls the first electromagnetic valve 7, the second electromagnetic valve 8 and the third electromagnetic valve 9 to be closed, and the electric control module controls the first booster pump 2 and the second booster pump 4 to be opened.

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 under the action of the first booster pump 2, namely, raw water enters the pre-filter element 31 and impacts the pre-filter element 31; because the first electromagnetic valve 7 and the third electromagnetic valve 9 are closed, the waste water electromagnetic valve 6 is opened, and the second booster pump 4 is opened, water in the front filter element 31 flows into the RO filter element 5 after being pressurized by the second booster pump 4, the water forms pure water and waste water in the RO filter element 5, the waste water is discharged from the waste water electromagnetic valve 6 through a waste water waterway, and the pure water moves to the rear filter element 32 and impacts the rear filter element 32, so that the purpose of testing the water pressure impact resistance is realized.

Since the first electromagnetic valve 7 is closed, pure water in the post-filter element 32 cannot be discharged from the first electromagnetic valve 7; in addition, pure water continuously flows into the pipeline, and the passage space formed by the second booster pump 4, the RO filter element 5, the rear filter element 32 and the first electromagnetic valve 7 is smaller and smaller, so that the pure water pressure of the rear filter element 32 impacted by the RO filter element from the second booster pump 4 is larger and larger, and the pressure value detected by the second pressure gauge 12 is also larger and larger.

(2) The electronic control module mainly reads the pressure value detected by the second pressure gauge 12 and judges whether the pressure value reaches a target value or not; typically, after a period of operation of step (1), such as 20 minutes of operation, the second pressure gauge 12 may detect a steady pressure value; if the second pressure gauge 12 does not reach the target value, this means that the water pressure impact resistance test of the post-filter element 32 is not passed. The target value is set to meet the water pressure impact resistance test of the post-filter 32, and one skilled in the art can set different target values according to the requirements of the post-filter 32 test.

If the pressure value detected by the second pressure gauge 12 reaches the target value, the system is represented as initially passing the water pressure resistant impact test on the post-filter element 32.

(3) When the second pressure gauge 12 detects the target value, the electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7 and the second electromagnetic valve 8 to be closed, controls the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be opened, and controls the first booster pump 2 and the second booster pump 4 to be closed. Since the third solenoid valve 9 and the waste water solenoid valve 6 are opened, the pressure value of the pure water waterway is changed, and the pressure value of the waterway is generally reduced.

Therefore, the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are read, and whether the pressure values drop to the set values is judged; when the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are reduced to the set values, the complete water pressure impact resistance test of the rear filter element 32 is passed; if the pressure value of the first pressure gauge 11 and/or the second pressure gauge 12 does not drop to the set value during the period, the water pressure impact resistance test of the rear filter element 32 is also considered to be failed; the set value can be a value set by a person skilled in the art according to the need, or can be a normal value of the pure water waterway in a natural environment; the set value involved in the method of testing the post-filter element 32 for the water pressure impact is required to be equal to or greater than the normal value involved in the method and less than the target value involved in the method.

The above steps complete a complete water pressure resistant impact test on the post-filter element 32, and in general, the water pressure resistant impact test on the post-filter element 32 needs to be performed at least twice, so that the above steps need to be circulated at least twice, in order to improve the intelligence of the test system, a circulation value can be set in the electronic control module, and a person skilled in the art can set the circulation value as required, so that the filter element test system can automatically perform the water pressure resistant impact test on the post-filter element 32 at least twice, so as to optimize the test result of the post-filter element 32.

The invention provides a filter element testing method which is applied to the filter element testing system and is mainly used for performing a water pressure impact resistance test on an RO filter element 5. In general, before performing the water pressure impact resistance test on the RO filter element 5, the air in the filter element test system needs to be completely exhausted, and the exhaust method is already described above and will not be repeated here; the testing method for performing the water pressure impact resistance test on the RO filter element 5 comprises the following steps:

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 under the action of the first booster pump 2, namely, raw water enters the pre-filter element 31 and impacts the pre-filter element 31; because the first electromagnetic valve 7 and the third electromagnetic valve 9 are closed, the waste water electromagnetic valve 6 is opened, and the second booster pump 4 is opened, the water in the pre-filter element 31 flows to the RO filter element 5 after being boosted by the second booster pump 4 and impacts the RO filter element 5, so that the water pressure impact test effect on the RO filter element 5 is realized; the water forms pure water and waste water in the RO filter 5, the waste water is discharged from the waste water solenoid valve 6 through the waste water waterway, and the pure water moves to the rear filter 32.

Since the first electromagnetic valve 7 is closed, pure water in the post-filter element 32 cannot be discharged from the first electromagnetic valve 7, that is, the space in the passage formed by the second booster pump 4, the RO filter element 5, the post-filter element 32 and the first electromagnetic valve 7 is smaller and smaller, so that the pure water pressure of the post-filter element 32 impacted by the RO filter element 5 from the second booster pump 4 is larger and larger, and the pressure value detected by the second pressure gauge 12 is also larger and larger.

(2) The electronic control module reads the pressure value detected by the second pressure gauge 12 and judges whether the pressure value reaches a target value, if the pressure value reaches the target value, the system is represented to pass the water pressure resistant impact test on the RO filter element 5, and if the pressure value does not reach the target value, the system is represented to pass the water pressure resistant impact test on the RO filter element 5.

Typically, after step (1) is run for a period of time, such as 20 minutes, the pressure value detected by the second pressure gauge 12 reaches the target value; wherein the target value is a value set to meet the water pressure impact resistance test of the RO filter 5, and a person skilled in the art can set different target values according to the requirements of the RO filter 5 test.

(3) Thereafter, the electronic control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8 and the waste water electromagnetic valve 6 to be closed and controls the third electromagnetic valve 9 to be opened according to the target value measured by the second pressure gauge 12, and the electronic control module controls the first booster pump 2 and the second booster pump 4 to be closed. Since the third solenoid valve 9 is opened, the pressure value of the pure water path is changed, and the pressure value is generally reduced.

(4) The electronic control module reads the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 and judges whether the voltage values of the first pressure gauge and the second pressure gauge are reduced to the set values or not. As the third electromagnetic valve 9 is opened, the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8 and the waste water electromagnetic valve 6 are closed, and the first booster pump 2 and the second booster pump 4 are closed, so that the pressure value in the pure water waterway changes, and the pressure value in the pure water waterway generally becomes smaller; when the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are reduced to the set values, completing one complete water pressure impact resistance test of the RO filter element 5; if the pressure value of the first pressure gauge 11 and/or the second pressure gauge 12 is detected not to be reduced to the set value, the water pressure impact resistance test of the RO filter core 5 is not passed. The set value can be a value set by a person skilled in the art according to the need, or can be a normal value of the pure water waterway in a natural environment; and the set value involved in the process of performing the water pressure impact resistance test on the RO filter element 5 is required to be larger than or equal to the normal value involved in the method and smaller than the target value involved in the method.

The above-mentioned step is accomplished once to the water pressure resistant impact test of RO filter core 5, and usually, the water pressure resistant impact test of RO filter core 5 needs to carry out at least twice to RO filter core 5 to the water pressure resistant impact test, consequently, need at least twice above-mentioned step of circulation, in order to promote test system's intelligence, can set up the circulation value at electric control module, the person of skill in the art can set up the circulation value as required for filter core test system carries out at least twice to RO filter core 5's water pressure resistant impact test voluntarily, in order to optimize RO filter core 5's test result.

The invention provides a filter element testing method which is applied to the filter element testing system and mainly used for carrying out blasting test on a filter element barrel of an RO filter element 5 and a composite barrel of a composite filter element 3. In general, before performing the explosion test on the cartridge tub of the RO cartridge 5 and the composite tub of the composite cartridge 3, it is necessary to completely exhaust the air in the cartridge test system, and the exhaust method has been described above and will not be repeated here.

As shown in fig. 1, the pre-filter element 31 and the post-filter element 32 are arranged in a composite barrel of the composite filter element 3, four water inlet and outlet pipes are led out of the composite filter element 3, a post-water inlet and a post-water outlet which are communicated with the post-filter element 32 are distributed in the middle, and a pre-water inlet and a pre-water outlet which are communicated with the pre-filter element 31 are distributed on two sides.

The blasting test method comprises the following steps:

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 through the pressurizing action of the first booster pump 2, namely, raw water enters the front filter element 31 from the front water inlet and impacts the composite barrel; because the first electromagnetic valve 7, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 are closed and the second booster pump 4 is opened, the water in the pre-filter element 31 moves to the RO filter element 5 through the action of the second booster pump 4 and impacts the filter element barrel; the water moves from the RO cartridge 5 to the composite cartridge 3, i.e. the water moves from the RO cartridge 5 to the post cartridge 32 and impacts the composite bowl.

Because the first electromagnetic valve 7 is closed, pure water in the post-filter element 32 cannot be discharged from the first electromagnetic valve 7, namely, the space in the passage of the second booster pump 4-RO filter element 5-post-filter element 32-first electromagnetic valve 7 is smaller and smaller, so that the pure water pressure of the post-filter element 32 impacted by the RO filter element from the second booster pump 4 is larger and larger, and the pressure value detected by the second pressure gauge 12 is also larger and larger.

(2) The electronic control module reads the detected pressure values of the first pressure gauge 11 and the second pressure gauge 12, judges whether the pressure values of the first pressure gauge 11 and the second pressure gauge 12 reach the target value, if the pressure values of the first pressure gauge 11 and the second pressure gauge 12 reach the target value, the explosion test is preliminarily passed, and if the pressure values of the first pressure gauge 11 and/or the second pressure gauge 12 do not reach the target value, the explosion test is considered to be failed. Typically, after a period of operation of step (1), such as 20 minutes of operation, the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 reach the target values; wherein the target value is a value set to meet the blasting test of the cartridge barrel and the composite barrel, and a person skilled in the art can set different target values according to the requirements of the blasting test of the cartridge barrel and the composite barrel.

(3) Thereafter, the electronic control module controls the water inlet solenoid valve 1, the first solenoid valve 7, the second solenoid valve 8, the third solenoid valve 9 and the waste water solenoid valve 6 to be closed according to target values detected by the first pressure gauge 11 and the second pressure gauge 12, and the electronic control module controls the first booster pump 2 and the second booster pump 4 to be closed for a proper time, so that the pure water waterway is maintained for a proper time, and the pressures born by the filter element barrel and the composite barrel are maintained. The dwell time may be set as desired, such as 15 seconds.

(4) After the pressure maintaining is carried out for a period of time, the electric control module controls the second electromagnetic valve 8 and the third electromagnetic valve 9 to be opened, controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7 and the waste water electromagnetic valve 6 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be closed, so that the pressure in the pure water circuit is reduced, and the pressure value in the pure water waterway is reduced to be a normal value after the proper time.

Judging whether the pressure maintaining and the pressure reducing are successful or not through the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 during the pressure maintaining and the pressure reducing, and if so, completing a complete blasting test of the filter element barrel and the composite barrel; if the pressure maintaining or the pressure reducing is unsuccessful, the explosion test of the filter element barrel and the compound barrel is not passed.

The testing steps are only needed to be executed once, so that the blasting test of the filter element barrel and the composite barrel is completed.

The implementation principle of the embodiment is as follows: the filter element testing system can perform exhaust test, high-pressure test, low-pressure test, water-pressure-resistant impact test of the front filter element 31, water-pressure-resistant impact test of the rear filter element 32, water-pressure-resistant impact test of the RO filter element 5 and filter element barrel explosion test, so that one system can realize reliability test for various filter elements, and can test different filter elements according to the requirements, thereby not only testing the strength of the filter element, but also testing the strength of the filter element barrel; the system is not required to be independently arranged for testing different filter elements, so that the experience of testing the filter elements is improved, and the efficiency of testing the filter elements is improved.

Example 2

Referring to fig. 2, embodiment 2 is different from embodiment 1 in that: the device also comprises a fourth electromagnetic valve 10, wherein two ends of the fourth electromagnetic valve 10 are respectively communicated with the water outlet end of the front filter element 31 and the second booster pump 4, and the fourth electromagnetic valve 10 is connected with the electronic control module.

(1) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the waste water electromagnetic valve 6 and the fourth electromagnetic valve 10 to be opened, controls the second electromagnetic valve 8 and the third electromagnetic valve 9 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be opened.

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 through the pressurizing action of the first booster pump 2, namely, raw water enters the pre-filter element 31 and is filtered through the pre-filter element 31; because of the adsorption effect of the second booster pump 4, water in the front filter element 31 flows through the fourth solenoid valve 10 and then enters the RO filter element 5 through the pressurization effect of the second booster pump 4, pure water and waste water are formed after the RO filter element 5 filters the water, the pure water is discharged from the first solenoid valve 7 after being filtered by the rear filter element 32, and the waste water enters a waste water waterway and is discharged through the waste water solenoid valve 6.

(3) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed according to the stable detection values detected by the first pressure gauge 11 and the second pressure gauge 12, the fourth electromagnetic valve 10 is opened, and the electric control module controls the first booster pump 2 and the second booster pump 4 to be closed; when the air in the filter element testing system is completely discharged, the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 are closed, and the first booster pump 2 and the second booster pump 4 are closed, so that the air is limited to enter the filter element testing system again.

The invention provides a filter element testing method which is applied to the filter element testing system and is used for performing high-pressure testing on the filter element testing system, in particular to performing high-pressure testing on a composite filter element 3, an RO filter element 5 and the like. Typically, all air within the cartridge testing system needs to be exhausted before high pressure testing can be performed; the testing method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1 and the fourth electromagnetic valve 10 to be opened, controls the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be opened.

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 through the pressurizing action of the first booster pump 2, namely, raw water enters the pre-filter element 31 and is filtered through the pre-filter element 31; because of the adsorption effect of the second booster pump 4, water in the front filter element 31 flows through the fourth electromagnetic valve 10 and then enters the RO filter element 5 through the pressurization effect of the second booster pump 4, and the water is filtered by the RO filter element 5 and then enters the rear filter element 32; because the first electromagnetic valve 7 is closed, if the water in the post filter element 32 flows back to the RO filter element 5, the water is pressed back to the post filter element 32 under the pressurizing action of the second booster pump 4.

Because the first electromagnetic valve 7 is closed, water in the rear filter element 32 cannot flow out of the filter element testing system, and the pressure value in the filter element testing system is larger and larger through the pressurizing effect of the second booster pump 4, namely the detected pressure values of the first pressure gauge 11 and the second pressure gauge 12 are larger and larger, and the purpose of high-pressure testing is achieved.

(3) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed according to target values detected by the first pressure gauge 11 and the second pressure gauge 12, the fourth electromagnetic valve 10 is opened, and the electric control module controls the first booster pump 2 and the second booster pump 4 to be closed.

When the water pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are all target values, the electronic control module reads that the first pressure gauge 11 and the second pressure gauge 12 are all detected by the target values, so that the electronic control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the wastewater electromagnetic valve 6 to be closed, the fourth electromagnetic valve 10 to be opened, and controls the first booster pump 2 and the second booster pump 4 to be closed, so that the high-pressure test of the filter element test system is completed, and the high-pressure test of the composite filter element 3 and the RO filter element 5 is completed.

The invention provides a filter element testing method which is applied to the filter element testing system and is used for carrying out low-pressure testing on the filter element testing system, in particular to carrying out low-pressure testing on a composite filter element 3, an RO filter element 5 and the like. Typically, all air within the cartridge testing system needs to be vented prior to low pressure testing; the testing method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1, the second electromagnetic valve 8, the third electromagnetic valve 9 and the fourth electromagnetic valve 10 to be opened, controls the first electromagnetic valve 7 and the waste water electromagnetic valve 6 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be opened.

Since the second electromagnetic valve 8 is opened, after raw water enters the pure water waterway through the water inlet electromagnetic valve 1, the raw water contacts with air, and if the raw water is not supplied sufficiently, the first booster pump 2 can suck air into the pure water waterway, and the raw water is adsorbed by the first booster pump 2 again; the water in the pure water waterway enters the composite filter element 3 under the action of the first booster pump 2. Since the first electromagnetic valve 7 and the waste water electromagnetic valve 6 are closed and the fourth electromagnetic valve 10 and the third electromagnetic valve 9 are opened, water in the composite filter element 3 cannot be discharged from the first electromagnetic valve 7, and water in the composite filter element 3 is discharged from the third electromagnetic valve 9 through the second booster pump 4 due to the action of the second booster pump 4, and at this time, the action of the third electromagnetic valve 9 corresponds to a water outlet, and the split-flow decompression function is achieved.

When the water pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are all target values, the electronic control module reads that the first pressure gauge 11 and the second pressure gauge 12 are all detected by the target values, so that the electronic control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the wastewater electromagnetic valve 6 to be closed, the fourth electromagnetic valve 10 to be opened, and controls the first booster pump 2 and the second booster pump 4 to be closed, so that the low-pressure test of the filter element test system is completed, and the low-pressure test of the composite filter element 3 and the RO filter element 5 is completed.

The invention provides a filter element testing method which is applied to the filter element testing system and is mainly used for performing a water pressure impact resistance test on a front filter element 31. In general, before the pre-cartridge 31 is subjected to the water pressure impact test, all the air in the cartridge test system needs to be exhausted; the testing method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1 and the waste water electromagnetic valve 6 to be opened and controls the first electromagnetic valve 7, the second electromagnetic valve 8, the fourth electromagnetic valve 10 and the third electromagnetic valve 9 to be closed, and the electric control module controls the first booster pump 2 to be opened and controls the second booster pump 4 to be closed.

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 under the action of the first booster pump 2, namely, raw water enters the pre-filter element 31 and impacts the pre-filter element 31; because the fourth solenoid valve 10 is closed, the water in the pre-cartridge 31 does not pass through the third solenoid valve 9 nor the RO cartridge 5 and the post-cartridge 32.

(2) The pressure value detected by the first pressure gauge 11 reaches the target value. Typically, after a period of operation of step (1), such as 20 minutes of operation, the pressure value detected by the first pressure gauge 11 reaches the target value; the target value is a value set to satisfy the water pressure impact resistance test of the pre-filter 31, and one skilled in the art can set different target values according to the test requirement of the pre-filter 31.

(3) The electric control module controls the first electromagnetic valve 7 and the waste water electromagnetic valve 6 to be opened and controls the second electromagnetic valve 8, the third electromagnetic valve 9 and the fourth electromagnetic valve 10 to be opened according to the target value detected by the first pressure gauge 11, and the electric control module controls the first booster pump 2, the water inlet electromagnetic valve 1 and the second booster pump 4 to be closed. Since the second solenoid valve 8 and the fourth solenoid valve 10 are opened, the pressure value of the pure water path is changed, and the pressure value is generally reduced.

(4) The pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 drop to the set values. Because the second electromagnetic valve 8, the fourth electromagnetic valve 9, the first electromagnetic valve 7, the third electromagnetic valve 10 and the waste water electromagnetic valve 6 are opened, the water inlet electromagnetic valve 1 is closed, and the first booster pump 2 and the second booster pump 4 are closed, so that the pressure value in the pure water waterway changes, and the pressure value in the pure water waterway generally becomes smaller; when the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are reduced to set values, the set values can be set by a person skilled in the art according to the needs, and can also be normal values of the pure water waterway in natural environment; wherein the set value is greater than or equal to the normal value and less than the target value.

The invention provides a filter element testing method which is applied to the filter element testing system and is mainly used for performing a water pressure impact resistance test on a rear filter element 32. Typically, all air within the cartridge testing system needs to be exhausted before the post-cartridge 32 is tested for water pressure impact; the testing method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1 and the fourth electromagnetic valve 10 to be opened, controls the first electromagnetic valve 7, the second electromagnetic valve 8, the waste water electromagnetic valve 6 and the third electromagnetic valve 9 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be opened.

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 under the action of the first booster pump 2, namely, raw water enters the pre-filter element 31 and impacts the pre-filter element 31; because the first electromagnetic valve 7 and the third electromagnetic valve 9 are closed, the waste water electromagnetic valve 6 is opened, the fourth electromagnetic valve 10 is opened, and the second booster pump 4 is opened, the water in the front filter element 31 moves to the RO filter element 5 through the action of the second booster pump 4, the water forms pure water and waste water in the RO filter element 5, the waste water is discharged from the waste water electromagnetic valve 6 through a waste water channel, and the pure water moves to the rear filter element 32 and impacts the rear filter element 32; as the first electromagnetic valve 7 is closed, if the water in the post filter element 32 flows back to the RO filter element 5, the water is pressed back to the post filter element 32 by the pressurizing action of the second booster pump 4.

(2) The pressure value detected by the second pressure gauge 12 reaches the target value. Typically, after step (1) is run for a period of time, such as 20 minutes, the pressure value detected by the second pressure gauge 12 reaches the target value; the target value is set to meet the water pressure impact resistance test of the post-filter 32, and one skilled in the art can set different target values according to the requirements of the post-filter 32 test.

(3) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7 and the second electromagnetic valve 8 to be closed and controls the third electromagnetic valve 9, the fourth electromagnetic valve 10 and the waste water electromagnetic valve 6 to be opened according to the target value measured by the second pressure gauge 12, and the electric control module controls the first booster pump 2 and the second booster pump 4 to be closed. Since the third solenoid valve 9 and the waste water solenoid valve 6 are opened, the pressure value of the pure water path is changed, and the pressure value is generally reduced.

(4) The pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 drop to the set values. As the third electromagnetic valve 9 and the waste water electromagnetic valve 6 are opened, the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8 and the fourth electromagnetic valve 10 are closed, and the first booster pump 2 and the second booster pump 4 are closed, so that the pressure value in the pure water waterway changes, and the pressure value in the pure water waterway generally becomes smaller; when the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are reduced to set values, the set values can be set by a person skilled in the art according to the needs, and can also be normal values of the pure water waterway in natural environment; wherein the set value is greater than or equal to the normal value and less than the target value.

The above-mentioned step is accomplished once to the water pressure resistant impact test of post-filter core 32, and generally, the water pressure resistant impact test of post-filter core 32 needs to carry out the water pressure resistant impact test to post-filter core 32 at least twice, therefore, need at least twice above-mentioned step of circulation, in order to promote test system's intelligence, can set up the circulation value at electric control module, the person skilled in the art can set up the circulation value as required for filter core test system carries out the water pressure resistant impact test of at least twice to post-filter core 32 voluntarily, in order to optimize post-filter core 32's test result.

The invention provides a filter element testing method which is applied to the filter element testing system and is mainly used for performing a water pressure impact resistance test on an RO filter element 5. In general, before performing the water pressure impact resistance test on the RO cartridge 5, it is necessary to completely exhaust the air in the cartridge test system; the testing method comprises the following steps:

(1) The electric control module controls the water inlet electromagnetic valve 1, the fourth electromagnetic valve 10 and the waste water electromagnetic valve 6 to be opened, controls the first electromagnetic valve 7, the second electromagnetic valve 8 and the third electromagnetic valve 9 to be closed, and controls the first booster pump 2 and the second booster pump 4 to be opened.

Because the second electromagnetic valve 8 is closed, raw water enters the pure water waterway through the water inlet electromagnetic valve 1 and the fourth electromagnetic valve 10 and enters the composite filter element 3 under the action of the first booster pump 2, namely, the raw water enters the pre-filter element 31 and impacts the pre-filter element 31; because the first electromagnetic valve 7 and the third electromagnetic valve 9 are closed, the waste water electromagnetic valve 6 is opened and the second booster pump 4 is opened, the water in the front filter element 31 moves to the RO filter element 5 under the action of the second booster pump 4 and impacts the RO filter element 5, the water forms pure water and waste water in the RO filter element 5, the waste water is discharged from the waste water electromagnetic valve 6 through a waste water channel, and the pure water moves to the rear filter element 32 and impacts the rear filter element 32; as the first electromagnetic valve 7 is closed, if the water in the post filter element 32 flows back to the RO filter element 5, the water is pressed back to the post filter element 32 by the pressurizing action of the second booster pump 4.

(2) The pressure value detected by the second pressure gauge 12 reaches the target value. Typically, after step (1) is run for a period of time, such as 20 minutes, the pressure value detected by the second pressure gauge 12 reaches the target value; wherein the target value is a value set to meet the water pressure impact resistance test of the RO filter 5, and a person skilled in the art can set different target values according to the requirements of the RO filter 5 test.

(3) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the fourth electromagnetic valve 10 and the waste water electromagnetic valve 6 to be closed and controls the third electromagnetic valve 9 to be opened according to the target value measured by the second pressure gauge 12, and the electric control module controls the first booster pump 2 and the second booster pump 4 to be closed. Since the third solenoid valve 9 is opened, the pressure value of the pure water path is changed, and the pressure value is generally reduced.

(4) The pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 drop to the set values. As the third electromagnetic valve 9 is opened, the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the fourth electromagnetic valve 10 and the waste water electromagnetic valve 6 are closed, and the first booster pump 2 and the second booster pump 4 are closed, so that the pressure value in the pure water waterway changes, and the pressure value in the pure water waterway generally becomes smaller; when the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 are reduced to set values, the set values can be set by a person skilled in the art according to the needs, and can also be normal values of the pure water waterway in natural environment; wherein the set value is greater than or equal to the normal value and less than the target value.

The invention provides a filter element testing method which is applied to the filter element testing system and mainly used for carrying out blasting test on a filter element barrel of an RO filter element 5 and a composite barrel of a composite filter element 3. In general, before performing a burst test on the cartridge tub of the RO cartridge 5 and the composite tub of the composite cartridge 3, it is necessary to completely discharge air in the cartridge test system; the testing method comprises the following steps:

Because the second electromagnetic valve 8 is closed, raw water enters the pure water channel through the water inlet electromagnetic valve 1 and enters the composite filter element 3 under the action of the first booster pump 2, namely, raw water enters the pre-filter element 31 and impacts the composite barrel; because the first electromagnetic valve 7, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 are closed and the second booster pump 4 is opened, after the water in the front filter element 31 flows through the fourth electromagnetic valve 10, the water moves to the RO filter element 5 through the action of the second booster pump 4 and impacts the filter element barrel; the water moves from the RO filter element 5 to the composite filter element 3, namely, the water moves from the RO filter element 5 to the rear filter element 32 and impacts the composite barrel; as the first solenoid valve 7 is closed, the pure water in the post-filter 32 moves to the RO filter 5, moves to the RO filter 5 again by the action of the second booster pump 4, and impacts the filter barrel.

(2) The detected pressure values of the first pressure gauge 11 and the second pressure gauge 12 reach the target values. Typically, after a period of operation of step (1), such as 20 minutes of operation, the pressure values detected by the first pressure gauge 11 and the second pressure gauge 12 reach the target values; wherein the target value is a value set to meet the blasting test of the cartridge barrel and the composite barrel, and a person skilled in the art can set different target values according to the requirements of the blasting test of the cartridge barrel and the composite barrel.

(3) The electric control module controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7, the second electromagnetic valve 8, the third electromagnetic valve 9 and the waste water electromagnetic valve 6 to be closed according to target values detected by the first pressure gauge 11 and the second pressure gauge 12, the fourth electromagnetic valve 10 is opened, the electric control module controls the first booster pump 2 and the second booster pump 4 to be closed, the proper time is kept, the pure water waterway is kept for proper time, and accordingly the pressure received by the filter element barrel and the composite barrel is kept. The dwell time may be set as desired, such as 15 seconds.

(4) The electronic control module controls the second electromagnetic valve 8, the third electromagnetic valve 9 and the fourth electromagnetic valve 10 to be opened and controls the water inlet electromagnetic valve 1, the first electromagnetic valve 7 and the waste water electromagnetic valve 6 to be closed, and the electronic control module controls the first booster pump 2 and the second booster pump 4 to be closed, because the second electromagnetic valve 8, the third electromagnetic valve 9 and the fourth electromagnetic valve 10 are opened, the water inlet electromagnetic valve 1, the first electromagnetic valve 7 and the waste water electromagnetic valve 6 are closed, the first booster pump 2 and the second booster pump 4 are closed, so that the pressure in the pure water circuit is reduced, and the pressure value in the pure water waterway is reduced to be a normal value after proper time so as to finish blasting test on the filter element barrel and the composite barrel.

It should be noted that the burst test needs to be performed only once.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A cartridge testing system, comprising:

the pure water waterway is provided with a raw water inlet end and a pure water outlet end, and comprises a water inlet electromagnetic valve (1), a first booster pump (2) and a composite filter element (3) which are sequentially arranged; the pure water waterway further comprises a second booster pump (4) and an RO filter element (5) communicated with the second booster pump (4), wherein the water inlet end of the second booster pump (4) is communicated with the composite filter element (3), and the water outlet end of the RO filter element (5) is communicated with the composite filter element (3);

The waste water waterway is provided with a waste water inlet end and a waste water outlet end, the waste water inlet end of the waste water waterway is communicated with the waste water port of the RO filter element (5), and the waste water waterway is provided with a waste water electromagnetic valve (6);

and electrical system, electrical system includes first solenoid valve (7), second solenoid valve (8), third solenoid valve (9) and electric control module, the water inlet end of first solenoid valve (7) with the play water end intercommunication of compound filter core (3), the one end of second solenoid valve (8) respectively with water inlet solenoid valve (1) with first booster pump (2) intercommunication, the one end of third solenoid valve (9) respectively with second booster pump (4) with the water inlet end intercommunication of RO filter core (5), electric control module respectively with water inlet solenoid valve (1), first booster pump (2), second booster pump (4), waste water solenoid valve (6), first solenoid valve (7), second solenoid valve (8) and third solenoid valve (9) are connected.

2. A cartridge testing system according to claim 1, wherein: the device also comprises a first pressure gauge (11) and a second pressure gauge (12); the first pressure gauge (11) is arranged between the first booster pump (2) and the composite filter element (3); the second pressure gauge (12) is arranged between the second booster pump (4) and the RO filter element (5); the first pressure gauge (11) and the second pressure gauge (12) are connected with the electronic control module.

3. A cartridge testing system according to claim 2, wherein: the composite filter element (3) comprises a preposed filter element (31) and a postposed filter element (32), the preposed filter element (31) is connected between the first booster pump (2) and the second booster pump (4), and the postposed filter element (32) is connected between the water outlet end of the RO filter element (5) and the first electromagnetic valve (7).

4. A cartridge testing system according to claim 2, wherein: the water outlet end of the front filter element (31) is communicated with the second booster pump (4), and the fourth electromagnetic valve (10) is connected with the electronic control module.

5. A method for testing a filter cartridge for use in the filter cartridge testing system of claim 3, comprising:

step one: the electric control module controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7) and the wastewater electromagnetic valve (6) to be opened and controls the second electromagnetic valve (8) and the third electromagnetic valve (9) to be closed, and the electric control module controls the first booster pump (2) and the second booster pump (4) to be opened;

step two: the electronic control module reads the pressure values detected by the first pressure gauge (11) and the second pressure gauge (12), judges whether the pressure values are stabilized in a preset pressure range, and if the pressure values are stabilized in the preset pressure range and the water flow rate discharged from the pure water outlet end of the pure water waterway is stabilized in the preset flow rate range, passes the air tightness test;

Step three: the electric control module controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7), the second electromagnetic valve (8), the third electromagnetic valve (9) and the wastewater electromagnetic valve (6) to be closed according to the stability detection value detected by the first pressure gauge (11) and the second pressure gauge (12), and the electric control module controls the first booster pump (2) and the second booster pump (4) to be closed.

6. A method of testing a filter cartridge for use in the filter cartridge testing system of claim 3, comprising:

step one: the electric control module controls the water inlet electromagnetic valve (1) to be opened and controls the first electromagnetic valve (7), the second electromagnetic valve (8), the third electromagnetic valve (9) and the waste water electromagnetic valve (6) to be closed, and controls the first booster pump (2) and the second booster pump (4) to be opened;

step two: the electronic control module reads the pressure values detected by the first pressure gauge (11) and the second pressure gauge (12) and judges whether the pressure values reach target values preset in a high-pressure test; when the pressure values detected by the first pressure gauge (11) and the second pressure gauge (12) reach target values preset in the high-pressure test, the high-pressure test is passed;

Step three: the electric control module controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7), the second electromagnetic valve (8), the third electromagnetic valve (9) and the wastewater electromagnetic valve (6) to be closed according to target values detected by the first pressure gauge (11) and the second pressure gauge (12), and the electric control module controls the first booster pump (2) and the second booster pump (4) to be closed.

7. A method of testing a filter cartridge for use in the filter cartridge testing system of claim 3, comprising:

step one: the electric control module controls the water inlet electromagnetic valve (1), the second electromagnetic valve (8) and the third electromagnetic valve (9) to be opened and controls the first electromagnetic valve (7) and the waste water electromagnetic valve (6) to be closed, and the electric control module controls the first booster pump (2) and the second booster pump (4) to be opened;

step two: the electronic control module reads that the detected pressure values of the first pressure gauge (11) and the second pressure gauge (12) reach target values preset in a low-pressure test; when the pressure values detected by the first pressure gauge (11) and the second pressure gauge (12) reach target values preset in the low-pressure test, the pressure values pass the low-pressure test;

8. A method of testing a filter cartridge for use in the cartridge testing system of claim 3, comprising:

step one: the electric control module controls the water inlet electromagnetic valve (1) and the wastewater electromagnetic valve (6) to be opened and controls the first electromagnetic valve (7), the second electromagnetic valve (8) and the third electromagnetic valve (9) to be closed, and controls the first booster pump (2) to be opened and the second booster pump (4) to be closed;

step two: the electronic control module reads the pressure value detected by the first pressure gauge (11) and judges whether the pressure value reaches a target value preset in a water pressure impact resistance test of the front filter element (31); if the target value is reached, the test is passed through the water pressure impact resistance test preliminarily;

Step three: the electric control module controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7), the third electromagnetic valve (9) and the wastewater electromagnetic valve (6) to be closed and controls the second electromagnetic valve (8) to be opened according to the target value detected by the first pressure gauge (11), and the electric control module controls the first booster pump (2) and the second booster pump (4) to be closed;

step four: the electronic control module reads the pressure values detected by the first pressure gauge (11) and the second pressure gauge (12) and judges whether the pressure values drop to preset set values in the water pressure impact resistance test of the front filter element (31); if the pressure value is reduced to the set value, the complete water pressure impact resistance test is finally passed.

9. A method of testing a filter cartridge for use in the cartridge testing system of claim 3, comprising:

step one: the electric control module controls the water inlet electromagnetic valve (1) and the wastewater electromagnetic valve (6) to be opened and controls the first electromagnetic valve (7), the second electromagnetic valve (8) and the third electromagnetic valve (9) to be closed, and the electric control module controls the first booster pump (2) and the second booster pump (4) to be opened;

Step two: the electronic control module reads the pressure value detected by the second pressure gauge (12) and judges whether the pressure value reaches a target value preset in a water pressure impact resistance test of the rear filter element (32); if the target value is reached, the test is passed through the water pressure impact resistance test preliminarily;

step three: the electric control module controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7) and the second electromagnetic valve (8) to be closed and controls the third electromagnetic valve (9) and the waste water electromagnetic valve (6) to be opened according to the target value measured by the second pressure gauge (12), and the electric control module controls the first booster pump (2) and the second booster pump (4) to be closed;

step four: the electronic control module reads the pressure values detected by the first pressure gauge (11) and the second pressure gauge (12) and judges whether the pressure values drop to a preset set value in a water pressure impact resistance test of the rear filter element (32), if the pressure values drop to the set value, the complete water pressure impact resistance test is finally passed.

10. A filter cartridge testing method applied to the filter cartridge testing system of claim 3, characterized by being used for performing a water pressure impact resistance test on an RO filter cartridge (5), comprising:

Step two: the electronic control module reads the pressure value detected by the second pressure gauge (12) and judges whether the pressure value reaches a target value preset in the water pressure impact resistance test of the RO filter element (5); if the target value is reached, the test is passed through the water pressure impact resistance test preliminarily;

step three: the electric control module controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7), the second electromagnetic valve (8) and the wastewater electromagnetic valve (6) to be closed and controls the third electromagnetic valve (9) to be opened according to the target value measured by the second pressure gauge (12), and the electric control module controls the first booster pump (2) and the second booster pump (4) to be closed;

step four: the electronic control module reads the pressure values detected by the first pressure gauge (11) and the second pressure gauge (12) and judges whether the pressure values drop to a preset set value in the water pressure impact resistance test of the RO filter element (5), if the pressure values drop to the set value, the complete water pressure impact resistance test is finally passed.

11. A filter cartridge testing method applied to the filter cartridge testing system of claim 3, characterized by being used for performing a blasting test on a filter cartridge barrel of an RO filter cartridge (5) and a composite barrel of a composite filter cartridge (3), comprising:

step one: the electric control module controls the water inlet electromagnetic valve (1) to be opened and controls the first electromagnetic valve (7), the second electromagnetic valve (8), the third electromagnetic valve (9) and the wastewater electromagnetic valve (6) to be closed, and controls the first booster pump (2) and the second booster pump (4) to be opened;

Step two: the electronic control module reads the detected pressure values of the first pressure gauge (11) and the second pressure gauge (12) and judges whether the pressure values reach a target value preset in a blasting test or not; if the target value is reached, passing the blasting test;

step three: the electric control module controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7), the second electromagnetic valve (8), the third electromagnetic valve (9) and the wastewater electromagnetic valve (6) to be closed according to target values detected by the first pressure gauge (11) and the second pressure gauge (12), and controls the first booster pump (2) and the second booster pump (4) to be closed and kept for preset time;

step four: the electric control module controls the second electromagnetic valve (8) and the third electromagnetic valve (9) to be opened and controls the water inlet electromagnetic valve (1), the first electromagnetic valve (7) and the waste water electromagnetic valve (6) to be closed, and the electric control module controls the first booster pump (2) and the second booster pump (4) to be closed.