CN113484013A - Automatic testing system and method for constant-temperature faucet - Google Patents
Automatic testing system and method for constant-temperature faucet Download PDFInfo
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- CN113484013A CN113484013A CN202110660771.3A CN202110660771A CN113484013A CN 113484013 A CN113484013 A CN 113484013A CN 202110660771 A CN202110660771 A CN 202110660771A CN 113484013 A CN113484013 A CN 113484013A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
Abstract
The invention discloses an automatic test system of a constant temperature faucet, which comprises a test device and a constant pressure water and gas supply mechanism, wherein the constant pressure water and gas supply mechanism is connected with a cold water inlet interface and a hot water inlet interface of the constant temperature faucet, and a water inlet flow sensor is arranged on the constant pressure water and gas supply mechanism; the testing device comprises a positioning mechanism, two clamping and rotating mechanisms, a lower plugging mechanism, an upper plugging mechanism and a controller, wherein the two clamping and rotating mechanisms are respectively used for driving the water diversion valve core and the thermostatic valve core to rotate; a temperature sensor is arranged on the lower plugging mechanism or the upper plugging mechanism; first pressure sensors are arranged on the lower plugging mechanism and the upper plugging mechanism. In addition, the invention also provides an automatic testing method of the thermostatic faucet. The invention can automatically test the sealing performance, the stability of the water outlet temperature and the stability of the water outlet flow of the thermostatic faucet, and improves the test efficiency and accuracy.
Description
Technical Field
The invention relates to the technical field of faucet testing equipment, in particular to an automatic constant-temperature faucet testing system and an automatic constant-temperature faucet testing method.
Background
In the assembly process of constant temperature tap production, need carry out performance test to the constant temperature tap to guarantee that the quality of every constant temperature tap reaches the level of designing requirement. At present, the performance of the thermostatic faucet such as flow, water outlet temperature and the like is mainly tested by manually operating auxiliary equipment in the industry, and due to the fact that a lot of matching actions are carried out in the detection process, a test plug needs to be frequently switched by hands, the whole detection process is very complicated, the dependence degree of the test process on experience and skills of operators is high, the false detection rate and the missing detection rate are difficult to control, and the detection efficiency and the detection accuracy of the thermostatic faucet are difficult to improve.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automatic testing system and an automatic testing method for a thermostatic faucet, which can automatically test the sealing performance, the stability of the water outlet temperature and the stability of the water outlet flow of the thermostatic faucet and improve the efficiency and the accuracy of the test.
In order to solve the technical problem, the invention provides an automatic testing system of a constant temperature faucet, which comprises a testing device and a constant pressure water and gas supply mechanism,
the thermostatic faucet comprises a faucet main body, a thermostatic valve core and a water diversion valve core, wherein a water mixing cavity is arranged in the faucet main body, a cold water inlet interface, a hot water inlet interface, a lower water mixing spray outlet and an upper water mixing spray outlet are arranged on the faucet main body, and the thermostatic valve core and the water diversion valve core are respectively arranged at two ends of the faucet main body;
the constant-pressure water and gas supply mechanism is connected with the cold water inlet interface and the hot water inlet interface, and a water inlet flow sensor is arranged on the constant-pressure water and gas supply mechanism;
the testing device comprises a positioning mechanism for fixing the faucet main body, two clamping and rotating mechanisms respectively used for driving the water diversion valve core and the thermostatic valve core to rotate, a lower plugging mechanism used for plugging the lower water mixing ejection port, an upper plugging mechanism used for plugging the upper water mixing ejection port and a controller; a temperature sensor is arranged at the position of the lower plugging mechanism communicated with the lower water mixing ejection port or the position of the upper plugging mechanism communicated with the upper water mixing ejection port; a first pressure sensor is arranged at the position, communicated with the lower water mixing ejection hole, of the lower plugging mechanism and at the position, communicated with the upper water mixing ejection hole, of the upper plugging mechanism;
the water inlet flow sensor, the temperature sensor, the first pressure sensor, the positioning mechanism, the clamping and rotating mechanism, the lower plugging mechanism and the upper plugging mechanism are respectively connected with the controller.
As the improvement of the above scheme, the constant pressure water and air supply mechanism comprises a first constant pressure air supply pipeline, a second constant pressure air supply pipeline, a cold water pipeline, a hot water pipeline, a first water dividing pipeline and a second water dividing pipeline, wherein the first constant pressure air supply pipeline, the second constant pressure air supply pipeline and the cold water pipeline are respectively connected with the cold water inlet interface through the first water dividing pipeline, and the first constant pressure air supply pipeline, the second constant pressure air supply pipeline and the hot water pipeline are respectively connected with the hot water inlet interface through the second water dividing pipeline.
As an improvement of the scheme, the cold water pipeline and the hot water pipeline are both provided with the water inlet flow sensors, and the first water distribution pipeline and the second water distribution pipeline are both provided with the second pressure sensors.
As an improvement of the above scheme, the clamping and rotating mechanism includes a driving motor, a synchronous belt and a pneumatic finger cylinder, the pneumatic finger cylinder is used for clamping the water diversion valve core or the thermostatic valve core, an output end of the driving motor is provided with a driving wheel, one end of the pneumatic finger cylinder is provided with a driven wheel, the synchronous belt is sleeved on the driving wheel and the driven wheel and used for driving the pneumatic finger cylinder to drive the water diversion valve core or the thermostatic valve core to rotate.
As an improvement of the above scheme, the upper mixed water ejection port comprises a front ejection port and a rear ejection port, and a switching valve core for switching the front ejection port or the rear ejection port to be communicated with the mixed water cavity is arranged on the faucet main body;
the lower plugging mechanism comprises a first air cylinder and a lower plug connected with the telescopic end of the first air cylinder, and the lower plug is arranged opposite to the lower water mixing ejection port;
the upper plugging mechanism comprises a second cylinder, a front plug and a rear plug, wherein the front plug and the rear plug are connected with the telescopic end of the second cylinder, and the front plug and the rear plug are respectively opposite to the front ejection port and the rear ejection port.
As an improvement of the above scheme, the testing device further comprises a frame, a lifting driving cylinder and a lifting guide post, the clamping and rotating mechanism further comprises a moving frame, the driving motor and the pneumatic finger cylinder are both fixed with the moving frame, the lifting driving cylinder is fixed with the moving frame, the telescopic end of the lifting driving cylinder is connected with the frame, the lifting guide post is fixed with the frame, and the moving frame is provided with a guide cylinder matched with the lifting guide post;
the positioning mechanism comprises a positioning seat and a clamping cylinder, the positioning seat is provided with a positioning groove with an opening at the top and matched with the faucet main body, the clamping cylinder is fixed with the rack, and the telescopic end of the clamping cylinder is provided with a clamping arm used for pressing the faucet main body in the positioning groove.
In addition, the invention also provides an automatic test method of the thermostatic faucet of the automatic test system of the thermostatic faucet, which comprises the steps of
Compressed air is introduced into the water mixing cavity, the clamping and rotating mechanism drives the water diversion valve core to rotate, and the air tightness of the thermostatic faucet is tested;
and cold water and hot water are introduced into the water mixing cavity, the clamping and rotating mechanism drives the thermostatic valve core to rotate, and the temperature and the flow of the discharged water are tested.
As an improvement of the scheme, the cold water inlet interface is provided with a cold cavity check valve, and the hot water inlet interface is provided with a hot cavity check valve and a gear valve core;
the method for introducing compressed air into the water mixing cavity, driving the water diversion valve core to rotate by the clamping and rotating mechanism and testing the air tightness of the thermostatic faucet comprises
Introducing first compressed air into the water mixing cavity through the cold water inlet interface, and testing the sealing performance of the hot cavity check valve and the gear valve core by the first pressure sensor;
if the test is qualified, exhausting, introducing first compressed air into the water mixing cavity through the hot water inlet interface, and testing the sealing performance of the check valve of the cold cavity through the first pressure sensor.
As an improvement of the scheme, the device comprises a water mixing cavity, a clamping and rotating mechanism and a testing device, wherein compressed air is introduced into the water mixing cavity, the clamping and rotating mechanism drives the water dividing valve core to rotate, and the testing device is used for testing the air tightness of the thermostatic faucet
If the tightness test of the check valve of the cold cavity is qualified, exhausting, driving the water diversion valve core to rotate by the clamping and rotating mechanism, so that the upper mixed water ejection port is communicated with the mixed water cavity, introducing second compressed air into the mixed water cavity through the cold water inlet interface, and testing the air tightness of one side, close to the upper mixed water ejection port, of the mixed water cavity by the first pressure sensor;
if the test is qualified, exhausting, driving the water diversion valve core to rotate by the clamping rotating mechanism, enabling the lower water mixing ejection port to be communicated with the water mixing cavity, introducing second compressed air into the water mixing cavity through the cold water inlet interface, and testing the air tightness of one side, close to the lower water mixing ejection port, of the water mixing cavity by the first pressure sensor.
As an improvement of the scheme, the method comprises the steps of introducing cold water and hot water into the water mixing cavity, driving the thermostatic valve core to rotate by the clamping and rotating mechanism, and testing the temperature and the flow of the discharged water, wherein the method comprises the steps of
Cold water and hot water are introduced into the water mixing cavity, the clamping and rotating mechanism drives the thermostatic valve core to rotate to a preset temperature position, the thermostatic valve core further rotates by a first preset angle, and the temperature sensor tests the current first outlet water temperature;
if the test is qualified, the clamping and rotating mechanism drives the thermostatic valve core to rotate by a second preset angle, and the temperature sensor tests the current second outlet water temperature;
if the test is qualified, the clamping and rotating mechanism drives the thermostatic valve core to rotate to the preset temperature position, and a water inlet flow sensor on the constant-pressure water and gas supply mechanism tests the current first water outlet flow;
if the test is qualified, closing the cold water, testing a second water outlet flow rate by using a water inlet flow rate sensor on the constant-pressure water and gas supply mechanism within a first preset time, and testing a third water outlet temperature by using a temperature sensor;
and if the test is qualified, opening the cold water, and testing the fourth outlet water temperature by the temperature sensor within the second preset time.
The implementation of the invention has the following beneficial effects:
the invention discloses an automatic testing system of a constant temperature faucet, which is characterized in that a positioning mechanism for fixing the constant temperature faucet, an upper plugging mechanism and a lower plugging mechanism which are respectively used for plugging an upper mixed water ejection port and a lower mixed water ejection port, and a clamping rotating mechanism which is used for driving a water dividing valve core to rotate so as to switch the lower mixed water ejection port or the upper mixed water ejection port to be communicated with a mixed water cavity and drive the constant temperature valve core to rotate so as to adjust the water outlet temperature of the mixed water cavity are arranged, a constant pressure water supply and air supply mechanism is connected with a cold water inlet interface and a hot water inlet interface of the constant temperature faucet, and a water inlet flow sensor on the constant pressure water supply and air supply mechanism is combined with the clamping rotating mechanism to drive the constant temperature valve core to rotate, so that the flow stability condition (water inlet flow is water outlet flow) of the lower mixed water ejection port or the upper mixed water ejection port under different water outlet conditions can be tested in real time; the temperature sensor is combined with the clamping rotating mechanism to drive the thermostatic valve core to rotate, so that the stability of the outlet water temperature under different outlet water conditions can be tested in real time; the sealing condition of each part of the water mixing cavity can be tested in real time by the aid of the first pressure sensor and the clamping and rotating mechanism to drive the water dividing valve core to rotate; the constant temperature faucet testing device has the advantages that the automatic testing of the sealing performance, the water outlet temperature stability and the water outlet flow stability of the constant temperature faucet is realized, after the constant temperature faucet is installed, the testing process is automatically carried out, the experience and the skill of an operator are not relied, and the testing efficiency and the testing accuracy are improved.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of an automatic testing system for a thermostatic faucet according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a thermostatic faucet;
FIG. 3 is a schematic structural view of the constant pressure water and air supply mechanism of FIG. 1;
FIG. 4 is a schematic structural diagram of an example of the testing device of FIG. 1;
FIG. 5 is a schematic view of the connection structure between the testing device of FIG. 1 and the first and second water diversion pipes of the constant pressure water and air supply mechanism;
fig. 6 is a schematic view of the installation of the thermostatic faucet of fig. 2 during testing on a testing device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides an embodiment of an automatic testing system for a thermostatic faucet, which includes a testing apparatus 1 and a constant-pressure water supply and air supply mechanism 2, and with reference to fig. 2, the thermostatic faucet includes a faucet body a1, a thermostatic valve core a2 and a water diversion valve core a3, a water mixing cavity is provided in the faucet body a1, a cold water inlet port a11, a hot water inlet port a12, a lower water mixing outlet port a13 and an upper water mixing outlet port a14 are provided on the faucet body a1, and the thermostatic valve core a2 and the water diversion valve core a3 are respectively provided at two ends of the faucet body a 1; the constant pressure water and gas supply mechanism 2 is connected with the cold water inlet port a11 and the hot water inlet port a12, and with reference to fig. 3, the constant pressure water and gas supply mechanism 2 is provided with a water inlet flow sensor 20; with reference to fig. 4 and 5, the testing device 1 includes a positioning mechanism 11 for fixing the faucet body a1, two clamping and rotating mechanisms 12 for driving the water diversion valve core a3 and the thermostatic valve core a2 to rotate, a lower blocking mechanism 13 for blocking the lower mixed water ejection port a13, an upper blocking mechanism 14 for blocking the upper mixed water ejection port a14, and a controller; a temperature sensor 15 is arranged at a position on the lower blocking mechanism 13 communicated with the lower water mixing ejection hole a13 or a position on the upper blocking mechanism 14 communicated with the upper water mixing ejection hole a 14; a first pressure sensor 16 is arranged at a position of the lower blocking mechanism 13 communicated with the lower water mixing jet hole a13 and a position of the upper blocking mechanism 14 communicated with the upper water mixing jet hole a 14; the water inlet flow sensor 20, the temperature sensor 15, the first pressure sensor 16, the positioning mechanism 11, the clamping and rotating mechanism 12, the lower plugging mechanism 13 and the upper plugging mechanism 14 are respectively connected with the controller.
In the embodiment, a positioning mechanism 11 for fixing the thermostatic faucet, an upper blocking mechanism 14 and a lower blocking mechanism 13 for blocking an upper mixed water ejection port a14 and a lower mixed water ejection port a13 respectively, and a clamping and rotating mechanism 12 for driving a water diversion valve core a3 to rotate so as to switch the lower mixed water ejection port a13 or the upper mixed water ejection port a14 to be communicated with a mixed water cavity, and driving a thermostatic valve core a2 to rotate so as to adjust the water outlet temperature of the mixed water cavity are arranged, a constant-pressure water supply and air supply mechanism 2 is connected with a cold water inlet port a11 and a hot water inlet port a12 of the thermostatic faucet, and the flow stability condition (inlet flow rate is outlet flow rate) of the lower mixed water ejection port a13 or the upper mixed water ejection port a14 under different water outlet conditions can be tested in real time by a water inlet flow rate sensor 20 on the constant-pressure water supply mechanism 2 in combination with the clamping and rotating mechanism 12 to drive the thermostatic valve core a2 to rotate; the temperature sensor 15 is combined with the clamping and rotating mechanism 12 to drive the thermostatic valve core a2 to rotate, so that the stability of the outlet water temperature under different outlet water conditions can be tested in real time; the sealing condition of each part of the water mixing cavity can be tested in real time by the first pressure sensor 16 in combination with the clamping and rotating mechanism 12 to drive the water distribution valve core a3 to rotate; the constant temperature faucet testing device has the advantages that the automatic testing of the sealing performance, the water outlet temperature stability and the water outlet flow stability of the constant temperature faucet is realized, after the constant temperature faucet is installed, the testing process is automatically carried out, the experience and the skill of an operator are not relied, and the testing efficiency and the testing accuracy are improved.
With reference to fig. 3, the constant pressure water supply and air supply mechanism 2 of the present embodiment specifically includes a first constant pressure air supply pipeline 21, a second constant pressure air supply pipeline 22, a cold water pipeline 23, a hot water pipeline 24, a first water diversion pipeline 25 and a second water diversion pipeline 26, the first constant pressure air supply pipeline 21, the second constant pressure air supply pipeline 22 and the cold water pipeline 23 respectively connect with the cold water inlet port a11 through the first water diversion pipeline 25, the first constant pressure air supply pipeline 21, the second constant pressure air supply pipeline 22 and the hot water pipeline 24 respectively connect with the hot water inlet port a12 through the second water diversion pipeline 26. Because the flow of the outlet water is the sum of the flow of the cold water pipeline 23 and the flow of the hot water pipeline 24, the inlet water flow sensors 20 are arranged on the cold water pipeline 23 and the hot water pipeline 24 to help the real-time test of the stability of the flow of the outlet water, no additional flowmeter is required to be arranged on the testing device 1, the structure of the testing device 1 is simplified to a certain extent, and the structure of the whole testing system is more uniform. The first water dividing pipeline 25 and the second water dividing pipeline 26 are both provided with a second pressure sensor 27 to monitor whether the water supply pressure meets the test requirement.
The clamping and rotating mechanism 12 specifically comprises a driving motor 121, a synchronous belt 122 and a pneumatic finger cylinder 123, the pneumatic finger cylinder 123 is used for clamping the water diversion valve core a3 or the thermostatic valve core a2, the output end of the driving motor 121 is provided with a driving wheel, one end of the pneumatic finger cylinder 123 is provided with a driven wheel, the synchronous belt 122 is sleeved on the driving wheel and the driven wheel and used for driving the pneumatic finger cylinder 123 to drive the water diversion valve core a3 or the thermostatic valve core a2 to rotate. The driving motor 121 drives the pneumatic finger cylinder 123 through the synchronous belt 122 to replace a manual rotating handle, the flexibility degree is good, and the rotation angle of the thermostatic valve core a2 and the water diversion valve core a3 can be controlled more accurately.
The lower plugging mechanism 13 includes a first cylinder 131 and a lower plug 132 connected to the telescopic end of the first cylinder 131, and the lower plug 132 is disposed opposite to the lower mixed water ejection port a 13.
Some shower constant temperature faucet have only a gondola water faucet water route, some possess two way gondola water faucet water routes, to the shower constant temperature faucet who possesses two way gondola water faucet water routes, mix water blowout mouth a14 including preceding blowout mouth and back blowout mouth on it, be equipped with on tap main part a1 and be used for with preceding blowout mouth or back blowout mouth switch to the switching valve core a15 with muddy water chamber intercommunication. Referring to fig. 6, the plugging mechanism 14 includes a second cylinder 141, a front plug 142 and a rear plug 143 connected to the telescopic end of the second cylinder 141, and the front plug 142 and the rear plug 143 are respectively disposed opposite to the front ejection opening and the rear ejection opening, so that it is convenient to test a shower thermostatic faucet having only one shower water path and two shower water paths.
The testing device 1 of this embodiment still includes frame 17, lift drive actuating cylinder 18 and lift guide post 19, centre gripping rotary mechanism 12 still includes moving frame 124, driving motor 121 and pneumatic finger cylinder 123 all with moving frame 124 is fixed, lift drive actuating cylinder 18 with moving frame 124 is fixed, and lift drive actuating cylinder 18's flexible end with frame 17 links to each other, lift guide post 19 is fixed with frame 17, be equipped with on the moving frame 124 with the guide cylinder of lift guide post 19 looks adaptation. The lifting driving cylinder 18 drives the clamping and rotating mechanism 12 to lift, so that the testing device 1 can adapt to the measurement of tap bodies with different apertures.
The positioning mechanism 11 specifically includes a positioning seat 111 and a clamping cylinder 112, the positioning seat 111 is provided with a positioning groove with an open top and adapted to the faucet main body a1, the clamping cylinder 112 is fixed to the rack 17, and a telescopic end of the clamping cylinder 112 is provided with a clamping arm for pressing the faucet main body a1 in the positioning groove.
In addition, the invention also provides an automatic test method of the thermostatic faucet of the automatic test system of the thermostatic faucet, which comprises the steps of
Step 10: compressed air is introduced into the water mixing cavity, the clamping and rotating mechanism 12 drives the water diversion valve core a3 to rotate, and the air tightness of the thermostatic faucet is tested;
the tap body of the embodiment is provided with a cold cavity check valve at the cold water inlet port a11, and the hot water inlet port a12 is provided with a hot cavity check valve and a gear valve core.
Step 10 specifically comprises
Step 101: introducing first compressed air into the water mixing cavity through a cold water inlet port a11, and testing the sealing performance of the check valve of the hot cavity and the valve core of the gear position by using a first pressure sensor 16;
in an initial state, the clamping and rotating mechanism 12 drives the water diversion valve core a3 to rotate, so that the lower water mixing ejection port a13 is communicated with the water mixing cavity, the cold cavity check valve is opened, first compressed air delivered by the first constant pressure air supply pipeline 21 enters the water mixing cavity through the first water diversion pipeline 25, the first pressure sensor 16 arranged at a position, communicated with the lower water mixing ejection port a13, on the lower plugging mechanism 13 tests the pressure of the water mixing cavity in real time, and if the air pressure is not reduced, the sealing performance of the hot cavity check valve and the gear valve core is judged to be qualified.
Step 102: if the test is qualified, exhausting, introducing first compressed air into the water mixing cavity through a hot water inlet port a12, and testing the sealing property of the check valve of the cold cavity by using the first pressure sensor 16;
at this time, the check valve of the hot chamber is opened, the first compressed air delivered by the first constant pressure air supply pipeline 21 enters the water mixing chamber through the second water diversion pipeline 26, the first pressure sensor 16 arranged at the position on the lower plugging mechanism 13 communicated with the lower water mixing jet port a13 tests the pressure of the water mixing chamber in real time, and if the air pressure is not reduced, the sealing performance of the check valve of the cold chamber is judged to be qualified.
Step 103: if the test is qualified, exhausting, driving the water diversion valve core a3 to rotate by the clamping rotating mechanism 12 to enable the upper mixed water ejection port a14 to be communicated with the mixed water cavity, introducing second compressed air into the mixed water cavity through the cold water inlet port a11, and testing the air tightness of the mixed water cavity on the side close to the upper mixed water ejection port a14 by the first pressure sensor 16;
at this time, the second compressed air delivered by the second constant-pressure air supply line 22 enters the water mixing chamber through the first water dividing line 25, the first pressure sensor 16 arranged at the position of the upper plugging mechanism 14 communicated with the upper water mixing jet port a14 tests the pressure of the water mixing chamber in real time, and if the air pressure is not reduced, the sealing performance of the side, close to the upper water mixing jet port a14, of the water mixing chamber is judged to be qualified.
For the thermostatic faucet with two shower water paths, the mixed water ejection port a14 comprises a front ejection port and a rear ejection port, and the front ejection port and the rear ejection port are sequentially switched to be communicated with the mixed water cavity by adjusting the switching valve core during air tightness testing, so that air tightness is respectively tested.
Step 104: if the test is qualified, exhausting, driving the water diversion valve core a3 to rotate by the clamping rotating mechanism 12 to enable the lower mixed water ejection port a13 to be communicated with the mixed water cavity, introducing second compressed air into the mixed water cavity through the cold water inlet port a11, and testing the air tightness of the mixed water cavity on the side close to the lower mixed water ejection port a13 by the first pressure sensor 16;
at this time, the second compressed air delivered by the second constant-pressure air supply line 22 enters the water mixing cavity through the first water dividing line 25, the first pressure sensor 16 arranged at the position of the lower blocking mechanism 13 communicated with the lower water mixing ejection port a13 tests the pressure of the water mixing cavity in real time, and if the air pressure is not reduced, the sealing performance of the side, close to the lower water mixing ejection port a13, of the water mixing cavity is judged to be qualified.
It should be noted that, in order to eliminate the influence of the tightness of the hot chamber check valve, the gear valve core, and the cold chamber check valve on the tightness of the mixing water chamber, the pressure of the first compressed air introduced in steps 101 and 102 is higher than the pressure of the second compressed air introduced in steps 103 and 104.
Step 20: and cold water and hot water are introduced into the water mixing cavity, the clamping and rotating mechanism 12 drives the thermostatic valve core a2 to rotate, and the temperature and the flow of the water are tested.
Step 201: cold water and hot water are introduced into the water mixing cavity, the clamping and rotating mechanism 12 drives the constant temperature valve core a2 to rotate to a preset temperature position, the constant temperature valve core a2 is further rotated by a first preset angle, and the temperature sensor 15 tests the current first outlet water temperature;
step 202: if the test is qualified, the clamping and rotating mechanism 12 drives the thermostatic valve core a2 to rotate by a second preset angle, and the temperature sensor 15 tests the current second outlet water temperature;
step 203: if the test is qualified, the clamping and rotating mechanism 12 drives the thermostatic valve core a2 to rotate to the preset temperature position, and the water inlet flow sensor 20 on the constant-pressure water supply and air supply mechanism 2 tests the current first water outlet flow;
step 204: if the test is qualified, the cold water is closed, the water inlet flow sensor 20 on the constant-pressure water and gas supply mechanism 2 tests the second water outlet flow within the first preset time, and the temperature sensor 15 tests the third water outlet temperature;
step 205: if the test is qualified, the cold water is turned on, and the temperature sensor 15 tests the temperature of the fourth effluent within the second preset time.
In this embodiment, an alarm connected to the controller is further provided, and when the pressure measured by the first pressure sensor 16 decreases during the measurement process, or the first outlet flow measured by the inlet flow sensor 20, the second outlet flow measured by the inlet flow sensor, the first outlet temperature measured by the temperature sensor 15, the second outlet temperature, the third outlet temperature, and the fourth outlet temperature do not conform to the set range, the alarm gives an alarm to remind that the measurement is not qualified, and the measurement procedure is terminated.
After the test is finished, the water removal function is automatically switched, and the water in the water mixing cavity is blown away by utilizing the compressed air.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. An automatic test system for a thermostatic faucet is characterized by comprising a test device and a constant-pressure water and gas supply mechanism,
the thermostatic faucet comprises a faucet main body, a thermostatic valve core and a water diversion valve core, wherein a water mixing cavity is arranged in the faucet main body, a cold water inlet interface, a hot water inlet interface, a lower water mixing spray outlet and an upper water mixing spray outlet are arranged on the faucet main body, and the thermostatic valve core and the water diversion valve core are respectively arranged at two ends of the faucet main body;
the constant-pressure water and gas supply mechanism is connected with the cold water inlet interface and the hot water inlet interface, and a water inlet flow sensor is arranged on the constant-pressure water and gas supply mechanism;
the testing device comprises a positioning mechanism for fixing the faucet main body, two clamping and rotating mechanisms respectively used for driving the water diversion valve core and the thermostatic valve core to rotate, a lower plugging mechanism used for plugging the lower water mixing ejection port, an upper plugging mechanism used for plugging the upper water mixing ejection port and a controller; a temperature sensor is arranged at the position of the lower plugging mechanism communicated with the lower water mixing ejection port or the position of the upper plugging mechanism communicated with the upper water mixing ejection port; a first pressure sensor is arranged at the position, communicated with the lower water mixing ejection hole, of the lower plugging mechanism and at the position, communicated with the upper water mixing ejection hole, of the upper plugging mechanism;
the water inlet flow sensor, the temperature sensor, the first pressure sensor, the positioning mechanism, the clamping and rotating mechanism, the lower plugging mechanism and the upper plugging mechanism are respectively connected with the controller.
2. The automatic testing system of a thermostatic faucet of claim 1, wherein the constant pressure water and air supply mechanism comprises a first constant pressure air supply pipeline, a second constant pressure air supply pipeline, a cold water pipeline, a hot water pipeline, a first water diversion pipeline and a second water diversion pipeline, the first constant pressure air supply pipeline, the second constant pressure air supply pipeline and the cold water pipeline are respectively connected with the cold water inlet interface through the first water diversion pipeline, and the first constant pressure air supply pipeline, the second constant pressure air supply pipeline and the hot water pipeline are respectively connected with the hot water inlet interface through the second water diversion pipeline.
3. The automatic testing system of claim 2, wherein the inlet flow sensor is disposed on each of the cold water line and the hot water line, and the second pressure sensor is disposed on each of the first water diversion line and the second water diversion line.
4. The automatic testing system of any one of claims 1 to 3, wherein the clamping and rotating mechanism comprises a driving motor, a synchronous belt and a pneumatic finger cylinder, the pneumatic finger cylinder is used for clamping the water diversion valve core or the thermostatic valve core, an output end of the driving motor is provided with a driving wheel, one end of the pneumatic finger cylinder is provided with a driven wheel, and the synchronous belt is sleeved on the driving wheel and the driven wheel and used for driving the pneumatic finger cylinder to drive the water diversion valve core or the thermostatic valve core to rotate.
5. The automatic test system for the thermostatic faucet as claimed in any one of claims 1 to 3, wherein the upper mixed water ejection port comprises a front ejection port and a rear ejection port, and a switching valve core for switching the front ejection port or the rear ejection port to be communicated with the mixed water cavity is arranged on the faucet body;
the lower plugging mechanism comprises a first air cylinder and a lower plug connected with the telescopic end of the first air cylinder, and the lower plug is arranged opposite to the lower water mixing ejection port;
the upper plugging mechanism comprises a second cylinder, a front plug and a rear plug, wherein the front plug and the rear plug are connected with the telescopic end of the second cylinder, and the front plug and the rear plug are respectively opposite to the front ejection port and the rear ejection port.
6. The automatic test system for the thermostatic faucet, as claimed in claim 4, wherein the test device further comprises a frame, a lifting driving cylinder and a lifting guide post, the clamping and rotating mechanism further comprises a moving frame, the driving motor and the pneumatic finger cylinder are both fixed to the moving frame, the lifting driving cylinder is fixed to the moving frame, the telescopic end of the lifting driving cylinder is connected to the frame, the lifting guide post is fixed to the frame, and the moving frame is provided with a guide cylinder adapted to the lifting guide post;
the positioning mechanism comprises a positioning seat and a clamping cylinder, the positioning seat is provided with a positioning groove with an opening at the top and matched with the faucet main body, the clamping cylinder is fixed with the rack, and the telescopic end of the clamping cylinder is provided with a clamping arm used for pressing the faucet main body in the positioning groove.
7. An automatic thermostatic faucet testing method based on the automatic thermostatic faucet testing system according to any one of claims 1 to 6, characterized by comprising
Compressed air is introduced into the water mixing cavity, the clamping and rotating mechanism drives the water diversion valve core to rotate, and the air tightness of the thermostatic faucet is tested;
and cold water and hot water are introduced into the water mixing cavity, the clamping and rotating mechanism drives the thermostatic valve core to rotate, and the temperature and the flow of the discharged water are tested.
8. The automatic testing method of the thermostatic faucet of claim 7, wherein the cold water inlet interface is provided with a cold chamber check valve, and the hot water inlet interface is provided with a hot chamber check valve and a gear spool;
the method for introducing compressed air into the water mixing cavity, driving the water diversion valve core to rotate by the clamping and rotating mechanism and testing the air tightness of the thermostatic faucet comprises
Introducing first compressed air into the water mixing cavity through the cold water inlet interface, and testing the sealing performance of the hot cavity check valve and the gear valve core by the first pressure sensor;
if the test is qualified, exhausting, introducing first compressed air into the water mixing cavity through the hot water inlet interface, and testing the sealing performance of the check valve of the cold cavity through the first pressure sensor.
9. The automatic testing method of the thermostatic faucet of claim 8, wherein the compressed air is introduced into the water mixing cavity, the clamping and rotating mechanism drives the water dividing valve core to rotate, and the air tightness of the thermostatic faucet is tested
If the tightness test of the check valve of the cold cavity is qualified, exhausting, driving the water diversion valve core to rotate by the clamping and rotating mechanism, so that the upper mixed water ejection port is communicated with the mixed water cavity, introducing second compressed air into the mixed water cavity through the cold water inlet interface, and testing the air tightness of one side, close to the upper mixed water ejection port, of the mixed water cavity by the first pressure sensor;
if the test is qualified, exhausting, driving the water diversion valve core to rotate by the clamping rotating mechanism, enabling the lower water mixing ejection port to be communicated with the water mixing cavity, introducing second compressed air into the water mixing cavity through the cold water inlet interface, and testing the air tightness of one side, close to the lower water mixing ejection port, of the water mixing cavity by the first pressure sensor.
10. The automatic testing method for the thermostatic faucet of claim 7, wherein the hot and cold water is introduced into the water mixing cavity, the clamping and rotating mechanism drives the thermostatic valve core to rotate, and the temperature and the flow of the water are tested, wherein the testing method comprises the steps of
Cold water and hot water are introduced into the water mixing cavity, the clamping and rotating mechanism drives the thermostatic valve core to rotate to a preset temperature position, the thermostatic valve core further rotates by a first preset angle, and the temperature sensor tests the current first outlet water temperature;
if the test is qualified, the clamping and rotating mechanism drives the thermostatic valve core to rotate by a second preset angle, and the temperature sensor tests the current second outlet water temperature;
if the test is qualified, the clamping and rotating mechanism drives the thermostatic valve core to rotate to the preset temperature position, and a water inlet flow sensor on the constant-pressure water and gas supply mechanism tests the current first water outlet flow;
if the test is qualified, closing the cold water, testing a second water outlet flow rate by using a water inlet flow rate sensor on the constant-pressure water and gas supply mechanism within a first preset time, and testing a third water outlet temperature by using a temperature sensor;
and if the test is qualified, opening the cold water, and testing the fourth outlet water temperature by the temperature sensor within the second preset time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110660771.3A CN113484013A (en) | 2021-06-15 | 2021-06-15 | Automatic testing system and method for constant-temperature faucet |
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| CN202110660771.3A CN113484013A (en) | 2021-06-15 | 2021-06-15 | Automatic testing system and method for constant-temperature faucet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054372A (en) * | 2021-11-11 | 2022-02-18 | 苏州朗坤自动化设备股份有限公司 | Shower faucet gas and water testing equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054372A (en) * | 2021-11-11 | 2022-02-18 | 苏州朗坤自动化设备股份有限公司 | Shower faucet gas and water testing equipment |
| CN114054372B (en) * | 2021-11-11 | 2023-11-03 | 苏州朗坤自动化设备股份有限公司 | Shower faucet air test and water test equipment |
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