CN107782511B - Air-tightness detection device and detection method - Google Patents
Air-tightness detection device and detection method Download PDFInfo
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- CN107782511B CN107782511B CN201710971768.7A CN201710971768A CN107782511B CN 107782511 B CN107782511 B CN 107782511B CN 201710971768 A CN201710971768 A CN 201710971768A CN 107782511 B CN107782511 B CN 107782511B
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- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 238000012360 testing method Methods 0.000 claims abstract description 75
- 238000007789 sealing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 230000003584 silencer Effects 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
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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
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Abstract
The present invention provides a kind of air-tightness detection device and detection methods, device therein by three control solenoid valves by connecting to form at least two-stage gas supply access, the outlet side of single control solenoid valve and afterbody gas supply access is connected, mechanism for testing and single control solenoid valve are contacted, it is such then achievable disposably to multiple intelligence wearing class products progress air-leakage tests, to improve the efficiency of air-leakage test；And, due to being provided with the first bibcock in the inlet end of gas supply accesses at different levels, the outlet side of gas supply accesses at different levels is provided with the second bibcock, respective first bibcock and the second bibcock can be controlled respectively by the electromagnetism control head of three control solenoid valves in gas supply accesses at different levels, so that the gas that provides of gas source can equivalent even into mechanism for testing so that mechanism for testing can carry out quick and accurate air-leakage test to the intelligence wearing class product being placed in mechanism for testing according to the gas of entrance.
Description
Technical Field
The invention relates to the technical field of automatic detection, in particular to an air tightness detection device and an air tightness detection method.
Background
In recent years, with the continuous progress of technology, intelligent wearable products are rapidly developed. People dress the performance requirement that type product possessed constantly improves to intelligence to the example of intelligent wrist-watch, people require more and more high to the waterproof performance of intelligent wrist-watch at present, and this just needs before intelligent wrist-watch leaves the factory, carries out the gas tightness test to the complete machine of intelligent wrist-watch to gather the judgement to sealed, waterproof data to intelligent wrist-watch, stop the defective products and flow.
At present, the air tightness test of intelligent wearable products mainly adopts a stand-alone machine (that is, only one machine is used for one product at one station) to detect, for example: in the airtight detection device for watches disclosed in application No. 201610714725.6, although the airtightness of the smart watch can be automatically detected, since only one smart watch can be detected at a time, the airtightness detection device not only has low efficiency, but also causes waste of human resources.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an air tightness detecting device and an air tightness detecting method, so as to solve the problem that the efficiency of detecting the air tightness of the smart wearable product is low at present.
The invention provides an air tightness detection device, which comprises a three-control electromagnetic valve, a single-control electromagnetic valve and a testing mechanism, wherein the three-control electromagnetic valve is connected with the single-control electromagnetic valve; the three-control electromagnetic valve is connected in series to form at least two stages of air supply passages; the three-control electromagnetic valve comprises a first passage, a second passage, a third passage and an electromagnetic control head, wherein the first passage is an air inlet end of the corresponding stage air supply passage, the second passage and the third passage are air outlet ends of the corresponding stage air supply passage, a first valve bolt is arranged at the air inlet end of the corresponding stage air supply passage, and a second valve bolt is arranged at the air outlet end of the corresponding stage air supply passage; the air inlet end of the single-control electromagnetic valve is connected with the air outlet end of the last stage air supply passage, and the testing mechanism is connected with the air outlet end of the single-control electromagnetic valve; the electromagnetic control heads of the three-control electromagnetic valves respectively control the first valve bolt and the second valve bolt of the corresponding series gas supply passage so that gas provided by the gas source equally and uniformly enters the testing mechanism, and the testing mechanism performs gas tightness detection on intelligent wearable products placed in the testing mechanism according to the entering gas.
Further, a preferable structure is: the single control electromagnetic valve is provided with a silencer, and the silencer is used for carrying out noise elimination treatment on the gas entering the single control electromagnetic valve.
Further, a preferable structure is: the testing mechanism comprises an upper shell and a lower shell; wherein, the intelligent wearing product is arranged in a cavity formed by the upper shell and the lower shell; be provided with sealing washer and barometer in the cavity, the sealing washer is used for sealing up the cavity, and the barometer is used for acquireing the atmospheric pressure value of the cavity after the sealing.
Further, a preferable structure is: and comparing the air pressure value acquired by the air pressure meter with a preset air pressure value, and determining whether the air tightness of the intelligent wearable product placed in the testing mechanism is qualified or not according to the comparison result.
Further, a preferable structure is: and an electromagnetic control head in a three-control electromagnetic valve in the first-stage gas supply passage controls the first valve bolt of the first-stage gas supply passage to be closed and the second valve bolt of the first-stage gas supply passage to be opened according to first preset time.
Further, a preferable structure is: an electromagnetic control head of a three-control electromagnetic valve in the upper-stage gas supply passage controls a second valve bolt of the corresponding-stage gas supply passage to be closed according to second preset time; an electromagnetic control head of a three-control electromagnetic valve in the next-stage air supply passage controls a first valve bolt of the corresponding-stage air supply passage to be opened according to second preset time; and an electromagnetic control head of a three-control electromagnetic valve in the next-stage air supply passage controls the first valve bolt of the corresponding-stage air supply passage to be closed and the second valve bolt of the corresponding-stage air supply passage to be opened according to third preset time.
Further, a preferable structure is: the electromagnetic control head of the three-control electromagnetic valve in the upper-stage gas supply passage controls the second valve bolt of the corresponding-stage gas supply passage to be closed according to the constant state of the gas at the gas inlet end of the corresponding-stage gas supply passage; when the second valve bolt of the upper-stage air supply passage is closed, the electromagnetic control head of the three-control electromagnetic valve in the lower-stage air supply passage controls the second valve bolt of the corresponding stage air supply passage to be opened; and the electromagnetic control head of the three-control electromagnetic valve in the next stage gas supply passage controls the first valve bolt of the corresponding stage gas supply passage to be closed and the second valve bolt of the corresponding stage gas supply passage to be opened according to the constant state of the gas entering the gas inlet end of the corresponding stage gas supply passage.
In addition, the invention provides an air tightness detection method for detecting the air tightness of an intelligent wearable product by using the air tightness detection device, which comprises the following steps: connecting three control electromagnetic valves in series to form at least two stages of air supply passages, connecting an air inlet end of a single control electromagnetic valve with an air outlet end of the last stage of air supply passage, and connecting a testing mechanism with the air outlet end of the single control electromagnetic valve; the gas source injects equal amount of gas into the gas inlet end of the first-stage gas supply passage, and after the gas enters the gas inlet end of the first-stage gas supply passage, the electromagnetic control head of the three-control electromagnetic valve in the first-stage gas supply passage controls the first valve bolt of the first-stage gas supply passage to be closed and the second valve bolt of the first-stage gas supply passage to be opened; gas enters the gas inlet end of the next stage gas supply passage through the gas outlet end of the previous stage gas supply passage, and the electromagnetic control head of the three-control electromagnetic valve in the previous stage gas supply passage controls the second valve bolt of the corresponding stage gas supply passage to be closed; after the gas enters the last stage gas supply passage, the electromagnetic control head of the three-control electromagnetic valve in the last stage gas supply passage controls the first valve bolt of the last stage gas supply passage to be closed and the second valve bolt to be opened, so that the gas uniformly enters the testing mechanism in an equivalent manner through the single-control electromagnetic valve, and the testing mechanism performs gas tightness testing on intelligent wearable products placed in the testing mechanism according to the entering gas.
According to the air tightness detection device and the detection method provided by the invention, the three-control electromagnetic valve is connected in series to form at least two stages of air supply passages, the single-control electromagnetic valve is connected with the air outlet end of the last stage of air supply passage, and the test mechanism is connected in series with the single-control electromagnetic valve, so that the air tightness detection of a plurality of intelligent wearable products can be realized at one time, and the air tightness detection efficiency is improved; and because the air inlet end of each stage of air supply passage is provided with the first valve bolt, the air outlet end of each stage of air supply passage is provided with the second valve bolt, the electromagnetic control heads of the three-control electromagnetic valves in each stage of air supply passage can respectively control the first valve bolt and the second valve bolt, so that the air provided by the air source can uniformly enter the testing mechanism in an equivalent manner, and the testing mechanism can rapidly and accurately detect the air tightness of the intelligent wearable product placed in the testing mechanism according to the entered air.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:
fig. 1 is a schematic overall configuration diagram of a airtightness detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a three-control solenoid valve of the airtightness detection apparatus according to the embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a three-control solenoid valve of the airtightness detection apparatus according to the embodiment of the present invention;
fig. 4 is a schematic structural view of a single-control solenoid valve of the airtightness detection apparatus according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a testing mechanism of the air-tightness detecting device according to the embodiment of the invention.
The same reference numbers in all figures indicate similar or corresponding features or functions.
In the figure: the intelligent wearable product comprises a primary air supply passage 1, a first passage 11, a second passage 12, a third passage 13, an electromagnetic control head 14, a first valve bolt 15, a second valve bolt 16, a secondary air supply passage 2, a single-control electromagnetic valve 3, an air inlet end 31, an air outlet end 32, a silencer 33, a testing mechanism 4, an upper shell 41, a lower shell 42, a sealing ring 43, a barometer 44 and an intelligent wearable product 5.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Aiming at the problem of low air tightness detection efficiency at present, the invention connects the three-control electromagnetic valve in series to form at least two stages of air supply passages, connects the single-control electromagnetic valve with the air outlet end of the last stage of air supply passage, and connects the testing mechanism with the single-control electromagnetic valve in series, so that the air tightness detection of a plurality of intelligent wearable products can be realized at one time, and the air tightness detection efficiency is improved; and because the air inlet end of each stage of air supply passage is provided with the first valve bolt, the air outlet end of each stage of air supply passage is provided with the second valve bolt, the electromagnetic control heads of the three-control electromagnetic valves in each stage of air supply passage can respectively control the first valve bolt and the second valve bolt, so that the air provided by the air source can uniformly enter the testing mechanism in an equivalent manner, and the testing mechanism can rapidly and accurately detect the air tightness of the intelligent wearable product placed in the testing mechanism according to the entered air.
The air tightness detection device provided by the invention comprises a three-control electromagnetic valve, a single-control electromagnetic valve and a testing mechanism; the three-control electromagnetic valve is connected in series to form at least two stages of air supply passages; the three-control electromagnetic valve comprises a first passage, a second passage, a third passage and an electromagnetic control head, wherein the first passage is an air inlet end of the corresponding stage air supply passage, the second passage and the third passage are air outlet ends of the corresponding stage air supply passage, a first valve bolt is arranged at the air inlet end of the corresponding stage air supply passage, and a second valve bolt is arranged at the air outlet end of the corresponding stage air supply passage; the air inlet end of the single-control electromagnetic valve is connected with the air outlet end of the last stage air supply passage, and the testing mechanism is connected with the air outlet end of the single-control electromagnetic valve; the electromagnetic control heads of the three-control electromagnetic valves respectively control the first valve bolt and the second valve bolt of the corresponding series gas supply passage so that gas provided by the gas source equally and uniformly enters the testing mechanism, and the testing mechanism performs gas tightness detection on intelligent wearable products placed in the testing mechanism according to the entering gas.
The electromagnetic control head in the three-control electromagnetic valve in the first-stage air supply passage controls the first valve bolt of the first-stage air supply passage to be closed and the second valve bolt of the first-stage air supply passage to be opened according to first preset time. The electromagnetic control head of the three-control electromagnetic valve in the upper stage gas supply passage can control the second valve bolt of the corresponding stage gas supply passage to be closed according to second preset time; an electromagnetic control head of a three-control electromagnetic valve in the next-stage air supply passage controls a first valve bolt of the corresponding-stage air supply passage to be opened according to second preset time; and an electromagnetic control head of a three-control electromagnetic valve in the next-stage air supply passage controls the first valve bolt of the corresponding-stage air supply passage to be closed and the second valve bolt of the corresponding-stage air supply passage to be opened according to third preset time.
In addition, the electromagnetic control head of the three-control electromagnetic valve in the upper stage gas supply passage can also control the second valve bolt of the corresponding stage gas supply passage to be closed according to the constant state of the gas at the gas inlet end of the corresponding stage gas supply passage; when the second valve bolt of the upper-stage air supply passage is closed, the electromagnetic control head of the three-control electromagnetic valve in the lower-stage air supply passage controls the second valve bolt of the corresponding stage air supply passage to be opened; and the electromagnetic control head of the three-control electromagnetic valve in the next stage gas supply passage controls the first valve bolt of the corresponding stage gas supply passage to be closed and the second valve bolt of the corresponding stage gas supply passage to be opened according to the constant state of the gas entering the gas inlet end of the corresponding stage gas supply passage.
Further, to explain the air-tightness detecting device provided by the present invention, fig. 1 shows an overall structure of the air-tightness detecting device according to the embodiment of the present invention, fig. 2 shows a structure of a three-control solenoid valve of the air-tightness detecting device according to the embodiment of the present invention, fig. 3 shows a cross-sectional structure of the three-control solenoid valve of the air-tightness detecting device according to the embodiment of the present invention, fig. 4 shows a structure of a single-control solenoid valve of the air-tightness detecting device according to the embodiment of the present invention, and fig. 5 shows a structure of a testing mechanism of the air-tightness detecting device according to the embodiment of the present invention.
As shown in fig. 1 to 5, three-control electromagnetic valves are connected in series to form a two-stage air supply passage, a single-control electromagnetic valve 3 is connected with a two-stage air supply passage 2, and a testing mechanism 4 is connected with the single-control electromagnetic valve 3; the three-control electromagnetic valves respectively comprise a first passage 11, a second passage 12, a third passage 13 and an electromagnetic control head 14; the first passage 11 is used as the air inlet end of the corresponding stage air supply passage, the second passage and the third passage are the air outlet ends of the corresponding stage air supply passage, a first valve bolt 15 is respectively arranged at each air inlet end, and a second valve bolt 16 is respectively arranged at each air outlet end.
The air inlet end of the primary air supply passage 1 is connected with an air source (not shown in the figure), the air inlet end of the secondary air supply passage 2 is connected with the air outlet end of the primary air supply passage 1, the air inlet end 31 of the single-control electromagnetic valve 3 is connected with the air outlet end of the secondary air supply passage 2, and the air outlet end 32 of the single-control electromagnetic valve 3 is connected with the testing mechanism 4; electromagnetic control heads of three control electromagnetic valves in the primary air supply passage 1 and the secondary air supply passage 2 respectively control respective first valve bolts and second valve bolts so that the gas provided by the gas source equally and uniformly enters the testing mechanism 4, and the testing mechanism 4 carries out gas tightness detection on intelligent wearable products placed in the testing mechanism according to the entering gas.
Specifically, in the process of forming the primary air supply passage and the secondary air supply passage, the air inlet end of the secondary air supply passage is connected with the air outlet end of the primary air supply passage, and because the air outlet end of the primary air supply passage has two paths, the primary air supply passage can be connected with two three-control electromagnetic valves to form the secondary air supply passage; the air inlet end of the single-control electromagnetic valve is connected with the air outlet end of the secondary air supply passage, so that the four single-control electromagnetic valves can be connected through the two three-control electromagnetic valves, each single-control electromagnetic valve is connected with one testing mechanism, and therefore the air tightness detection of four intelligent wearable products can be realized at one time, and the efficiency of the air tightness test is greatly improved.
In addition, in the process that the gas enters the testing mechanism through the single control electromagnetic valve, the gas noise is extremely generated, therefore, a silencer 33 is arranged in the single control electromagnetic valve 3, and the gas in the single control electromagnetic valve is subjected to noise elimination through the silencer 33.
In addition, the test mechanism 4 includes an upper case 41 and a lower case 42; wherein, the intelligent wearable product 5 is placed in a cavity formed by the upper shell 41 and the lower shell 42; be provided with sealing washer 43 and barometer 44 in the cavity, the sealing washer is used for sealing up the cavity, and barometer 44 is used for acquireing the atmospheric pressure value of the cavity after the sealing up.
The testing mechanism compares the air pressure value obtained by the air pressure meter 44 with a preset air pressure value in the process of detecting the air tightness of the intelligent wearable product placed in the testing mechanism according to the entered air, and determines whether the air tightness of the intelligent wearable product placed in the testing mechanism is qualified or not according to the comparison result.
The preset air pressure value can be an entity model which is placed in the testing mechanism in advance and has the same volume with the intelligent wearable product, and the entity model has the completely sealed characteristic, so that an accurate air pressure value can be obtained through the entity model, and the finally obtained detection result can be more accurate by taking the air pressure value as a reference value for air tightness detection of the intelligent wearable product. Specifically, if the intelligent wearable product is not tightly sealed, the air pressure value acquired by the air pressure meter is certainly lower than the preset air pressure value, and if the lower air pressure value exceeds the preset range, the air tightness of the intelligent wearable product is determined to be unqualified.
In addition, when the air tightness of a plurality of intelligent wearable products is detected, the air pressure in each testing mechanism needs to be kept consistent, and if the air pressure in each testing mechanism is inconsistent (namely, the air cannot be uniformly distributed), the fluctuation of the air pressure value obtained by the barometer is easily caused, so that the final detection result is influenced. In order to make the air pressure entering each testing mechanism the same, in the air tightness detecting device provided by the invention, an electromagnetic control head of a three-control electromagnetic valve in a primary air supply passage needs to control a first valve bolt of the primary air supply passage to be closed and a second valve bolt of the primary air supply passage to be opened according to a first preset time; an electromagnetic control head of a three-control electromagnetic valve in the primary air supply passage controls a second valve bolt of the primary air supply passage to be closed according to second preset time; the electromagnetic control head of the secondary air supply passage controls the first valve bolt of the secondary air supply passage to be opened according to second preset time; and the electromagnetic control head of the secondary air supply passage controls the first valve bolt of the secondary air supply passage to be closed and the second valve bolt of the secondary air supply passage to be opened according to third preset time.
It should be noted that the first preset time is a time when the gas source provides gas to the first stage gas supply passage, the second preset time is a time when the previous stage gas supply passage provides gas to the next stage gas supply passage, and the third preset time is a time when gas is stored in the last stage gas supply passage. For example, the first predetermined time is a time for the gas source to provide gas to the primary gas supply passage, and is typically between 2S and 15S, the second predetermined time is a time for the primary gas supply passage to provide gas to the secondary gas supply passage, and is typically between 2S and 15S, and the third predetermined time is a time for gas to be stored in the secondary gas supply passage, and is typically between 2S and 15S.
Specifically, after the gas source supplies gas for the primary gas supply passage for 5S, the electromagnetic control head of the three-control electromagnetic valve in the primary gas supply passage controls the first valve bolt of the primary gas supply passage to be closed, so that the gas supplied by the gas source cannot enter the primary gas supply passage; meanwhile, the second valve bolt of the primary air supply passage is opened, so that the air uniformly enters the secondary air supply passage in equal quantity, and the primary air supply passage is equivalent to the secondary air supply passage; after the primary air supply passage supplies air for the secondary air supply passage for 6S, the electromagnetic control head of the three-control electromagnetic valve in the primary air supply passage controls the second valve bolt of the primary air supply passage to be closed, and meanwhile, the electromagnetic control head of the three-control electromagnetic valve of the secondary air supply passage controls the first valve bolt of the secondary air supply passage to be opened to receive the air output from the air outlet end of the primary air supply passage; after 10S, the electromagnetic control head of the three-control electromagnetic valve of the secondary gas supply passage controls the first valve bolt of the secondary gas supply passage to be closed and the second valve bolt of the secondary gas supply passage to be opened, so that gas enters the gas inlet end of the single-control electromagnetic valve through the gas outlet end of the secondary gas supply passage and then enters the testing mechanism through the gas outlet end of the single-control electromagnetic valve.
Further, in the present invention, the electromagnetic control head of the three-control electromagnetic valve in the primary air supply passage controls the second valve plug of the primary air supply passage to close according to the constant state of the gas at the air intake end of the primary air supply passage; when the second valve bolt of the primary air supply passage is closed, the electromagnetic control head of the three-control electromagnetic valve of the secondary air supply passage controls the first valve bolt of the secondary air supply passage to be opened; and the electromagnetic control head of the three-control electromagnetic valve of the secondary gas supply passage controls the first valve bolt of the secondary gas supply passage to be closed and the second valve bolt of the secondary gas supply passage to be opened according to the constant state of the gas entering the gas inlet end of the secondary gas supply passage. It should be noted that, the purpose of the electromagnetic control head is to keep the gas pressure in a relatively stable state regardless of whether the electromagnetic control head controls the first valve bolt and the second valve bolt through a preset time or according to a constant state of the gas, so that the gas pressure finally entering each testing mechanism is equal and uniform, and the final detection result is more accurate.
On the other hand, the invention provides an air tightness detection method for detecting the air tightness of an intelligent wearable product by using the air tightness detection device, which comprises the following specific flows:
connecting three control electromagnetic valves in series to form at least two stages of air supply passages, connecting an air inlet end of a single control electromagnetic valve with an air outlet end of the last stage of air supply passage, and connecting a testing mechanism with the air outlet end of the single control electromagnetic valve;
the gas source injects equal amount of gas into the gas inlet end of the first-stage gas supply passage, and after the gas enters the gas inlet end of the first-stage gas supply passage, the electromagnetic control head of the three-control electromagnetic valve in the first-stage gas supply passage controls the first valve bolt of the first-stage gas supply passage to be closed and the second valve bolt of the first-stage gas supply passage to be opened;
gas enters the gas inlet end of the next stage gas supply passage through the gas outlet end of the previous stage gas supply passage, and the electromagnetic control head of the three-control electromagnetic valve in the previous stage gas supply passage controls the second valve bolt of the corresponding stage gas supply passage to be closed;
after the gas enters the last stage gas supply passage, the electromagnetic control head of the three-control electromagnetic valve in the last stage gas supply passage controls the first valve bolt of the last stage gas supply passage to be closed and the second valve bolt to be opened, so that the gas uniformly enters the testing mechanism in an equivalent manner through the single-control electromagnetic valve, and the testing mechanism performs gas tightness testing on intelligent wearable products placed in the testing mechanism according to the entering gas.
In one embodiment of the invention, three control solenoid valves are connected in series to form a two-stage air supply passage; the electromagnetic control head of the three-control electromagnetic valve in the primary air supply passage controls the first valve bolt of the primary air supply passage to be closed and the second valve bolt of the primary air supply passage to be opened according to first preset time in the process of controlling the first valve bolt of the primary air supply passage to be closed and the second valve bolt of the primary air supply passage to be opened; in the process of controlling the first valve bolt of the secondary air supply passage to be closed and the second valve bolt to be opened, the electromagnetic control head of the three-control electromagnetic valve in the secondary air supply passage controls the first valve bolt of the secondary air supply passage to be opened according to second preset time; an electromagnetic control head of a three-control electromagnetic valve in the secondary air supply passage controls a first valve bolt of the secondary air supply passage to be closed and a second valve bolt of the secondary air supply passage to be opened according to third preset time; or the electromagnetic control head of the three-control electromagnetic valve in the primary gas supply passage controls the second valve bolt of the primary gas supply passage to be closed according to the constant state of the gas at the gas inlet end of the primary gas supply passage; when the second valve bolt of the primary air supply passage is closed, the electromagnetic control head of the three-control electromagnetic valve of the secondary air supply passage controls the first valve bolt of the secondary air supply passage to be opened; and the electromagnetic control head of the three-control electromagnetic valve of the secondary gas supply passage controls the first valve bolt of the secondary gas supply passage to be closed and the second valve bolt of the secondary gas supply passage to be opened according to the constant state of the gas entering the gas inlet end of the secondary gas supply passage.
According to the air tightness detection device and the air tightness detection method, air tightness detection can be conducted on a plurality of intelligent wearable products at the same time, and when the air tightness detection is conducted on the intelligent wearable products, the air provided by the air source can uniformly enter the testing mechanism in an equivalent amount, so that the testing mechanism can conduct quick and accurate air tightness detection on the intelligent wearable products placed in the testing mechanism according to the entered air.
The airtightness detection apparatus and detection method according to the present invention are described above by way of example with reference to the accompanying drawings. However, it will be understood by those skilled in the art that various modifications may be made to the airtightness detection apparatus and detection method provided in the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (8)
1. An airtightness detection apparatus comprising: the device comprises a three-control electromagnetic valve, a single-control electromagnetic valve and a testing mechanism; wherein,
three control electromagnetic valves are connected in series to form at least two stages of air supply passages; wherein,
the three-control electromagnetic valve comprises a first passage, a second passage, a third passage and an electromagnetic control head, wherein the first passage is an air inlet end of the corresponding stage air supply passage, the second passage and the third passage are air outlet ends of the corresponding stage air supply passage, a first valve bolt is arranged at the air inlet end of the corresponding stage air supply passage, and a second valve bolt is arranged at the air outlet end of the corresponding stage air supply passage;
the air inlet end of the single-control electromagnetic valve is connected with the air outlet end of the last stage air supply passage, and the testing mechanism is connected with the air outlet end of the single-control electromagnetic valve;
the electromagnetic control heads of the three-control electromagnetic valves respectively control the first valve bolt and the second valve bolt of the corresponding series gas supply passage so that gas provided by the gas source equally and uniformly enters the testing mechanism, and the testing mechanism performs gas tightness detection on intelligent wearable products placed in the testing mechanism according to the entering gas.
2. The airtightness detection apparatus according to claim 1,
and a silencer is arranged in the single-control electromagnetic valve, and the silencer is used for carrying out noise elimination treatment on the gas entering the single-control electromagnetic valve.
3. The airtightness detection apparatus according to claim 1, wherein the test mechanism comprises an upper case and a lower case; wherein,
the intelligent wearable product is placed in a cavity formed by the upper shell and the lower shell;
be provided with sealing washer and barometer in the cavity, the sealing washer is used for right the cavity seals, the barometer is used for acquireing the atmospheric pressure value of the cavity after the sealing.
4. The airtightness detection apparatus according to claim 3, wherein,
and comparing the air pressure value acquired by the barometer with a preset air pressure value, and determining whether the air tightness of the intelligent wearable product placed in the testing mechanism is qualified or not according to the comparison result.
5. The airtightness detection apparatus according to claim 1,
and an electromagnetic control head in a three-control electromagnetic valve in the first-stage gas supply passage controls the first valve bolt of the first-stage gas supply passage to be closed and the second valve bolt of the first-stage gas supply passage to be opened according to first preset time.
6. The airtightness detection apparatus according to claim 5, wherein,
an electromagnetic control head of a three-control electromagnetic valve in the upper-stage gas supply passage controls a second valve bolt of the corresponding-stage gas supply passage to be closed according to second preset time;
an electromagnetic control head of a three-control electromagnetic valve in the next-stage air supply passage controls a first valve bolt of the corresponding-stage air supply passage to be opened according to the second preset time;
and an electromagnetic control head of a three-control electromagnetic valve in the next-stage air supply passage controls the first valve bolt of the corresponding-stage air supply passage to be closed and the second valve bolt of the corresponding-stage air supply passage to be opened according to third preset time.
7. The airtightness detection apparatus according to claim 5, wherein,
the electromagnetic control head of the three-control electromagnetic valve in the upper-stage gas supply passage controls the second valve bolt of the corresponding-stage gas supply passage to be closed according to the constant state of the gas at the gas inlet end of the corresponding-stage gas supply passage;
when the second valve bolt of the upper-stage air supply passage is closed, the electromagnetic control head of the three-control electromagnetic valve in the lower-stage air supply passage controls the second valve bolt of the corresponding stage air supply passage to be opened;
and the electromagnetic control head of the three-control electromagnetic valve in the next stage gas supply passage controls the first valve bolt of the corresponding stage gas supply passage to be closed and the second valve bolt of the corresponding stage gas supply passage to be opened according to the constant state of the gas entering the gas inlet end of the corresponding stage gas supply passage.
8. An air tightness detection method for detecting the air tightness of an intelligent wearable product by using the air tightness detection device as claimed in any one of claims 1 to 7, the method comprising the following steps:
connecting three control electromagnetic valves in series to form at least two stages of air supply passages, connecting an air inlet end of a single control electromagnetic valve with an air outlet end of a last stage of air supply passage, and connecting a testing mechanism with the air outlet end of the single control electromagnetic valve;
the gas source injects equal amount of gas into the gas inlet end of the first-stage gas supply passage, and after the gas enters the gas inlet end of the first-stage gas supply passage, the electromagnetic control head of the three-control electromagnetic valve in the first-stage gas supply passage controls the first valve bolt of the first-stage gas supply passage to be closed and the second valve bolt of the first-stage gas supply passage to be opened;
gas enters the gas inlet end of the next stage gas supply passage through the gas outlet end of the previous stage gas supply passage, and the electromagnetic control head of the three-control electromagnetic valve in the previous stage gas supply passage controls the second valve bolt of the corresponding stage gas supply passage to be closed;
after gas enters the last stage gas supply passage, the electromagnetic control head of the three-control electromagnetic valve in the last stage gas supply passage controls the first valve bolt of the last stage gas supply passage to be closed and the second valve bolt to be opened, so that the gas uniformly enters the testing mechanism in an equivalent manner through the single-control electromagnetic valve, and the testing mechanism performs gas tightness testing on intelligent wearable products placed in the testing mechanism according to the entering gas.
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