Gas detection device

Abstract

The utility model discloses a gas detection device, which comprises a gas storage unit for storing first gas; the filter element connector comprises an air inflation channel, a detection channel and plugs, the air inflation channel is used for communicating the air storage unit with a water path inlet of the composite filter element, and the plugs are arranged in one-to-one correspondence with water path outlets of the composite filter element and used for plugging the water path outlets; the gas detection unit comprises a sensor and an indicator, the sensor is used for being communicated with the other water path inlet of the composite filter element through the detection channel and used for detecting the first gas, and when the sensor detects the first gas, the indicator is used for sending out prompt information. According to the gas detection device, the gas storage unit is used for inflating any water path of the composite filter element, the sensor of the gas detection unit is used for detecting in the other water path, and if a leakage point exists in the composite filter element, the sensor can detect first gas, so that gas leakage in the composite filter element is judged.

Description

Technical Field

[0001] This utility model relates to a gas detection device. Background Technology

[0002] The filter cartridge is a crucial component of a water purifier, typically welded together from a filter bottle and a filter cap. Before use, the filter cartridge's airtightness must be checked. Common filter cartridge testing methods include water testing and air testing. By passing air or water through the filter cartridge, leaks at the welded joints are observed to determine if the airtightness is acceptable. These methods are used to test the airtightness of the filter cartridge casing. However, with the advent of composite filter cartridges (i.e., a single filter cartridge containing multiple filtration systems), existing devices and methods can no longer detect internal leaks in composite filter cartridges. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the deficiency of the existing technology in lacking a device for detecting internal leakage of composite filter elements, and to provide a gas detection device.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A gas detection device for detecting leaks in a composite filter element, the composite filter element comprising at least two independent water paths, the gas detection device comprising:

[0006] The gas storage unit stores the first gas.

[0007] The filter element connector includes an air filling passage, a detection passage, and a plug. The air filling passage is used to connect the air storage unit to a water inlet of the composite filter element. The plug is provided one-to-one with the water outlet of the composite filter element and is used to block the water outlet.

[0008] The gas detection unit includes a sensor and an indicator. The sensor is used to communicate with another water inlet of the composite filter element through the detection passage. The sensor is used to detect the first gas. When the sensor detects the first gas, the indicator is used to issue a prompt message.

[0009] In this design, the gas detection device connects the gas storage unit to one water path of the composite filter element via a gas filling passage, and the sensor to another water path via a detection passage. Simultaneously, a plug seals the water path outlet, ensuring that both the water path receiving the first gas and the water path containing the sensor are isolated from the outside, preventing gas leakage through external channels and affecting the detection results. During detection, the gas storage unit fills any one water path of the composite filter element, while the sensor in the gas detection unit detects a leak in the other water path. If a leak exists inside the composite filter element, the first gas flows into the other water path through the leak, and the sensor detects it, triggering a leak warning from the indicator. This indicates an internal leak in the composite filter element. Preferably, to improve detection accuracy and economy, the first gas is a gas not present in air. More preferably, the first gas is carbon monoxide.

[0010] Preferably, the filter element connector includes a connector body, the gas filling passage and the detection passage are both disposed inside the connector body, the plug is integrally disposed in the connector body, the gas detection unit further includes a driving mechanism, one end of the connector body is connected to the gas storage unit, and the driving mechanism is used to drive the other end of the connector body to dock with the interface of the composite filter element.

[0011] In this design, the inflation passage, detection passage, and plug are integrated into the connector body, which facilitates the drive mechanism to drive the connector body. This allows multiple interfaces of the connector body to be connected to the interfaces of the composite filter element in one go, while the plug seals the water outlet, avoiding cumbersome manual operation, simplifying the operation process, and improving test efficiency.

[0012] In another embodiment, the air filling passage and the detection passage in the filter element connector can be set using separate pipes, so the air filling passage, the detection passage and the plug can be set separately.

[0013] Preferably, the driving mechanism is a dual-axis cylinder, the telescopic rod of the dual-axis cylinder is connected to the connector body, and the gas detection unit further includes a controller, which is connected to the dual-axis cylinder.

[0014] In this design, the dual-axis cylinder features axial positioning, preventing the filter element connector from rotating during movement. This eliminates the need for an axial positioning mechanism and simplifies the device structure. The controller extends and retracts the telescopic rod of the dual-axis cylinder, allowing the connector body to mate or detach from the composite filter element, reducing manual operation and achieving automated operation.

[0015] Preferably, the gas detection device further includes a protective mechanism, which includes a housing and an openable and closable protective cover. The housing has an open receiving cavity, in which the composite filter element and the gas detection unit are both installed. The protective cover is hinged to the housing and closes the opening.

[0016] In this design, the composite filter element and gas detection unit are installed within the containment cavity of the protective mechanism by opening the protective cover. During testing, the protective cover is closed to isolate the testing equipment and the product being tested from the outside, preventing environmental pollution or harm to the health of testing personnel caused by leakage of the first gas. Preferably, a transparent observation window is provided on the protective mechanism to facilitate observation of the test results.

[0017] Preferably, the housing is provided with an exhaust port communicating with the receiving cavity, and the exhaust port is used to connect to an external ventilation system.

[0018] In this scheme, after the test is completed, the first gas can be extracted and discharged to the outside in a timely manner through the external exhaust system, so as to avoid the first gas from polluting the environment and ensure the safety of the experiment.

[0019] Preferably, the protective mechanism further includes a filter element support, a first limiting plate, and a second limiting plate disposed within the housing. The upper surface of the filter element support is provided with a placement groove extending in a horizontal direction. The first limiting plate and the second limiting plate are respectively installed at both ends of the placement groove along the length direction for limiting the beginning and end of the composite filter element.

[0020] In this design, the placement groove is used to support the filter element in the horizontal direction, and the first limiting plate and the second limiting plate are used to limit the beginning and end of the composite filter element, respectively, so that the composite filter element is fixed in the axial direction, which facilitates the drive mechanism to drive the connector body to dock with the composite filter element in the axial direction.

[0021] Preferably, the bottom of the placement groove is provided with a positioning hole, which is used to engage with the protrusion of the composite filter element for insertion.

[0022] In this solution, when the composite filter element is fixed on the filter element support, the protrusion on the composite filter element is inserted into the positioning hole, and the composite filter element cannot rotate, so that the composite filter element is fixed in the circumferential direction, which facilitates the connection between the filter element connector and the composite filter element.

[0023] Preferably, the gas storage unit includes a gas storage tank and an on / off valve. The gas storage tank is used to store the first gas. The gas storage tank is connected to a water circuit of the composite filter element through an inflation pipe. The on / off valve is installed on the inflation pipe.

[0024] In this design, the on / off valve is used to open or close the passage in the inflation pipe. During testing, the on / off valve is opened, and the first gas flows into the water path of the composite filter element through the inflation pipe. Upon completion of testing, the on / off valve is closed to cut off the passage in the inflation pipe.

[0025] Preferably, there are two opening and closing valves, which are connected in series in the inflation pipe.

[0026] In this scheme, during testing, the first gas can only be introduced into the water circuit of the composite filter element by pressing the opening and closing valves simultaneously, thus playing a protective role and ensuring experimental safety.

[0027] Preferably, the indicator is any one or more of a buzzer, a warning light, or a display.

[0028] In this solution, when the indicator is a honey detector, if the sensor detects the first gas, the buzzer will sound to remind the testing personnel that the inner core of the composite filter is leaking.

[0029] When the indicator is a warning light, if the sensor detects the first gas, the warning light will be lit or flashed to remind the testing personnel that the inner core of the composite filter element is leaking water.

[0030] When the indicator is a display, if the sensor detects the first gas, the display will show a prompt message to remind the testing personnel that the inner core of the composite filter element is leaking.

[0031] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0032] The significant advantages of this invention are as follows: The gas detection device connects the gas storage unit to one water path of the composite filter element via a gas filling passage, and the sensor to another water path via a detection passage. Simultaneously, a plug seals the water path outlet, ensuring that both the water path into which the first gas is injected and the water path where the sensor is located are isolated from the outside, preventing gas leakage through external channels and thus avoiding interference with the detection results. During detection, the gas storage unit fills any water path of the composite filter element with gas, while the sensor in the gas detection unit detects a leak in the other water path. If a leak exists inside the composite filter element, the first gas flows into the other water path through this leak, and the sensor detects it. The indicator then issues a leak warning, thus determining that the composite filter element is leaking internally. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a composite filter element installed in a gas detection device according to a preferred embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the structure of a gas detection device according to a preferred embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the structure of a composite filter element according to a preferred embodiment of the present invention. Figure 1 .

[0036] Figure 4 This is a schematic diagram of the structure of a composite filter element according to a preferred embodiment of the present invention. Figure 2 .

[0037] Figure 5 This is a schematic diagram of the connector body according to a preferred embodiment of the present invention.

[0038] Figure 6 This is a schematic diagram of the internal structure of the connector body according to a preferred embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] Composite filter element 10

[0041] First Waterway Entrance 101

[0042] First Waterway Exit 102

[0043] Second Waterway Entrance 103

[0044] Second waterway exit 104

[0045] Protrusion 105

[0046] Sensor 1

[0047] Filter element connector 2

[0048] Connector body 21

[0049] Inflation passage 22

[0050] Detection pathway 23

[0051] First block 24

[0052] Second stop 25

[0053] Drive mechanism 3

[0054] Protective mechanism 4

[0055] Box 41

[0056] Receptacle 411

[0057] Exhaust port 412

[0058] Protective shield 42

[0059] Filter Cartridge Support 43

[0060] Placement slot 431

[0061] Positioning hole 432

[0062] First limiting plate 44

[0063] Second limiting plate 45

[0064] On / off valve 5 Detailed Implementation

[0065] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments described herein.

[0066] like Figures 1-6 As shown, this embodiment discloses a gas detection device for detecting leaks in a composite filter element 10. The composite filter element 10 includes two or more filtration systems, and the water paths in the two or more filtration systems are independent of each other and not connected. In this embodiment, the composite filter element 10 includes two independent water paths, one of which includes a first water path inlet 101 and a first water path outlet 102, and the other water path includes a second water path inlet 103 and a second water path outlet 104. The gas detection device includes a gas storage unit (not shown in the figure), a gas detection unit, and a filter element connector 2. The gas storage unit stores a first gas and is used to fill a water path of the composite filter element 10. The filter element connector 2 includes a filling passage 22, a detection passage 23, and a plug. The filling passage 22 is used to connect the gas storage unit to a water path inlet (first water path inlet 101) of the composite filter element 10. The plugs (first plug 24 and second plug 25) are correspondingly set to the water path outlets of the composite filter element 10, respectively, to block the water path outlets (first water path outlet 102 and second water path outlet 104). The gas detection unit includes a sensor 1 and an indicator (not shown in the figure). The sensor 1 is used to connect to another water path inlet (second water path inlet 103) of the composite filter element 10 through the detection passage 23. The sensor 1 is used to detect the first gas. When the sensor 1 detects the first gas, the indicator is used to issue a prompt message.

[0067] like Figures 1-6 As shown, in this embodiment, the gas detection device connects the gas storage unit to one water path of the composite filter element 10 via the gas filling passage 22, and connects the sensor 1 to another water path via the detection passage 23. Simultaneously, plugs (first plug 24 and second plug 25) are used to seal the water path outlets (first water path outlet 102 and second water path outlet 104), ensuring that both the water path into which the first gas is injected and the water path where the sensor 1 is located are isolated from the outside, preventing gas leakage through external channels and affecting the detection results. During detection, the gas storage unit fills any one water path of the composite filter element 10 with gas, and the sensor 1 of the gas detection unit detects the leak in the other water path. If a leak exists inside the composite filter element 10, the first gas flows into the other water path through the leak, and the sensor 1 can detect the first gas. The indicator then issues a leak warning, thus determining that the composite filter element 10 is leaking internally.

[0068] Preferably, to improve the accuracy and economy of detection, the first gas is a gas not present in air. More preferably, the first gas is carbon monoxide.

[0069] During the testing operation, the water circuit into which the first gas is introduced must be sealed and pressurized to further improve the accuracy of leak detection.

[0070] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in this embodiment, the filter element connector 2 includes a connector body 21, an inflation passage 22 and a detection passage 23, both of which are disposed inside the connector body 21. Plugs (first plug 24 and second plug 25) are integrally disposed on the connector body 21. The gas detection unit also includes a drive mechanism 3. One end of the connector body 21 is connected to the gas storage unit, and the drive mechanism 3 is used to drive the other end of the connector body 21 to connect with the interface of the composite filter element 10. The inflation passage 22, the detection passage 23, and the plugs (first plug 24 and second plug 25) are integrally disposed on the connector body 21, facilitating the drive mechanism 3 to drive the connector body 21. This allows the inflation passage 22 interface and the detection passage 23 interface of the connector body 21 to connect with the interfaces (first water inlet 101 and second water inlet 103) of the composite filter element 10 in one go. Simultaneously, the plugs (first plug 24 and second plug 25) seal the water outlets (first water outlet 102 and second water outlet 104), avoiding cumbersome manual operation, simplifying the operation process, and improving test efficiency.

[0071] In another embodiment, the air filling passage and the detection passage in the filter element connector can be set in separate pipes, so the air filling passage, the detection passage and the plug can be set separately.

[0072] like Figure 1 As shown, in this embodiment, the drive mechanism 3 is a dual-axis cylinder. The telescopic rod of the dual-axis cylinder is connected to the connector body 21. The dual-axis cylinder has an axial positioning function, which can prevent the filter element connector 2 from rotating during movement, eliminating the need for an axial positioning mechanism and simplifying the device structure. The gas detection unit also includes a controller (not shown in the figure), which is connected to the dual-axis cylinder. The controller controls the extension and retraction of the telescopic rod of the dual-axis cylinder, allowing the connector body 21 to dock or separate from the composite filter element 10, reducing manual operation and achieving automated operation.

[0073] like Figure 1 and Figure 2As shown, in this embodiment, the gas detection device further includes a protective mechanism 4. The protective mechanism 4 includes a housing 41 and an openable and closable protective cover 42. The housing 41 has an open receiving cavity 411, in which the composite filter element 10 and the gas detection unit are installed. The protective cover 42 is hinged to the housing 41 and closes the opening. The protective mechanism 4 is used to protect the monitoring equipment and also to protect the testing personnel. By opening the protective cover 42, the composite filter element 10 and the gas detection unit are installed in the receiving cavity 411 of the protective mechanism 4. During testing, the protective cover 42 is closed to isolate the testing equipment and the product being tested from the outside, preventing the leakage of the first gas from causing environmental pollution and affecting the health of the testing personnel.

[0074] Preferably, a transparent observation window is provided on the protective mechanism 4 to facilitate observation of the test results.

[0075] A handle is installed on the protective cover 42 for easy manual operation.

[0076] like Figure 2 As shown, the housing 41 is provided with an exhaust port 412 that communicates with the receiving cavity 411. The exhaust port 412 is used to connect to an external ventilation system. After the test is completed, the first gas can be extracted and discharged to the outside in a timely manner through the external ventilation system, avoiding environmental pollution by the first gas and ensuring experimental safety.

[0077] The housing 41 is provided with an air inlet that communicates with the receiving cavity 411. The air inlet is used for external gas to enter the receiving cavity.

[0078] like Figure 1 and Figure 2 As shown, the protective mechanism 4 also includes a filter element support 43, a first limiting plate 44, and a second limiting plate 45 disposed within the housing 41. The upper surface of the filter element support 43 is provided with a horizontally extending placement groove 431. The first limiting plate 44 and the second limiting plate 45 are respectively installed at both ends of the placement groove 431 along its length, for limiting the beginning and end of the composite filter element 10. The placement groove 431 is used to support the composite filter element 10 in the horizontal direction. The first limiting plate 44 and the second limiting plate 45 are used to limit the beginning and end of the composite filter element 10, respectively, so that the composite filter element 10 is fixed in the axial direction, facilitating the drive mechanism 3 to drive the connector body 21 to dock with the composite filter element 10 in the axial direction.

[0079] like Figure 2 and Figure 4As shown, a positioning hole 432 is provided at the bottom of the placement groove 431. The positioning hole 432 is used to engage with the protrusion 105 of the composite filter element 10 for insertion. When the composite filter element 10 is fixed on the filter element support 43, the protrusion 105 on the composite filter element 10 is inserted into the positioning hole 432, and the composite filter element 10 cannot rotate, so that the composite filter element 10 is fixed in the circumferential direction, which facilitates the connection between the filter element connector 2 and the composite filter element 10.

[0080] The gas storage unit includes a gas storage tank (not shown in the figure) and an on / off valve 5. The gas storage tank stores the first gas and is connected to a water passage of the composite filter element 10 via an inflation pipe. The on / off valve 5 is installed on the inflation pipe (not shown in the figure). The on / off valve 5 is used to open or close the passage in the inflation pipe. During testing, the on / off valve 5 is opened, and the first gas flows into the water passage of the composite filter element 10 through the inflation pipe. When the test is completed, the on / off valve 5 is closed to cut off the passage in the inflation pipe.

[0081] In this embodiment, there are two on / off valves 5, which are connected in series in the air filling pipe and installed on the outside of the chamber. During testing, only when both on / off valves 5 are pressed simultaneously can the first gas be filled into the water circuit of the composite filter element 10, which plays a protective role and ensures experimental safety.

[0082] The indicator can be any one or more of a buzzer, warning light, or display. When the indicator is a honeycomb device, if sensor 1 detects the first gas, the buzzer will sound to remind the inspector that the inner core of the composite filter element 10 is leaking.

[0083] When the indicator is a warning light, if sensor 1 detects the first gas, the warning light will be lit or flashed to remind the testing personnel that the inner core of the composite filter element 10 is leaking water.

[0084] When the indicator is a display, if the sensor 1 detects the first gas, the display will show a prompt message to remind the testing personnel that the inner core of the composite filter element 10 is leaking water.

[0085] Of course, buzzers, warning lights, and displays can be combined in any way to form an indicator, making it easy for testing personnel to quickly obtain test results.

[0086] In the description herein, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0087] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A gas detection device for leak detection of a composite filter cartridge, the composite filter cartridge comprising at least two independent water paths, characterized in that, The gas detection device comprises: a gas storage unit storing a first gas; a filter core connector comprising an inflation passage, a detection passage and a plug, the inflation passage being used to communicate the gas storage unit with a water inlet of the composite filter core, the plug being provided corresponding to a water outlet of the composite filter core and used to block the water outlet; a gas detection unit comprising a sensor and an indicator, the sensor being used to communicate with another water inlet of the composite filter core through the detection passage, the sensor being used to detect the first gas, and the indicator being used to send prompt information when the sensor detects the first gas.

2. The gas detection device of claim 1, wherein, The filter core connector comprises a connector body, the inflation passage and the detection passage are provided inside the connector body, the plug is integrally provided on the connector body, the gas detection unit further comprises a driving mechanism, one end of the connector body is connected to the gas storage unit, and the other end of the connector body is connected to the interface of the composite filter core through the driving mechanism.

3. The gas detection device of claim 2, wherein, The driving mechanism is a double-shaft air cylinder, the telescopic rod of the double-shaft air cylinder is connected to the connector body, and the gas detection unit further comprises a controller connected to the double-shaft air cylinder.

4. The gas detection device of claim 1, wherein, The gas detection device further comprises a protection mechanism, the protection mechanism comprises a box body and an openable protection cover, the box body has an open accommodating cavity, the composite filter core and the gas detection unit are installed in the accommodating cavity, and the protection cover is hinged to the box body and closes the opening.

5. The gas detection device of claim 4, wherein, An exhaust port is arranged on the box body and communicates with the accommodating cavity, and the exhaust port is used to connect an external exhaust system.

6. The gas detection device of claim 4, wherein, The protection mechanism further comprises a filter core support, a first limiting plate and a second limiting plate arranged in the box body, an upper surface of the filter core support is provided with a placement groove extending in a horizontal direction, and the first limiting plate and the second limiting plate are respectively installed at two ends of the placement groove in the length direction and used to limit the front end and the tail end of the composite filter core.

7. The gas detection device of claim 6, wherein, A positioning hole is arranged at the bottom of the placement groove and used to be inserted into the protruding part of the composite filter core.

8. The gas detection device of claim 1, wherein, The gas storage unit comprises a gas storage tank and an on-off valve, the gas storage tank is used to store the first gas, the gas storage tank is connected to a water channel of the composite filter core through an inflation pipe, and the on-off valve is installed on the inflation pipe.

9. The gas detection device of claim 8, wherein, The number of the on-off valves is two, and the two on-off valves are installed in series on the inflation pipe.

10. The gas detection device of any one of claims 1-9, wherein, The indicator is any one or more of a buzzer, a warning light and a display.

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