CN219434297U - Cartridge filter air tightness detection device - Google Patents

Abstract

The utility model provides a filter cartridge air tightness detection device, which is characterized in that a movable cylinder drives a second cylinder fixing plate to move, so that a sealing cylinder assembly enters each opening of a filter cartridge, then the movable cylinder contained in the sealing cylinder assembly drives one side far away from the opening to move, then the vertical end and the horizontal end of a T-shaped piece arranged at the output end of the sealing cylinder are matched with a second fixing seat to extrude an expansion sealing ring, so that the diameter of the section of the expansion sealing ring is enlarged, each opening of the filter cartridge is sealed, then the inner cavity of the filter cartridge is inflated through an inflation hole, after air pressure is stabilized, the air pressure change inside the filter cartridge is monitored through a pressure sensor, and when the pressure change is within a set value, the air tightness of the filter cartridge is good, otherwise, leakage points exist, and the air tightness does not meet the requirements. Therefore, the filter cartridge air tightness detection device is convenient to operate, time-saving and labor-saving, high in automation degree, high in precision and high in market popularization value.

Description

Cartridge filter air tightness detection device

Technical Field

The utility model relates to the technical field of bathtub detection appliances, in particular to a filter cartridge air tightness detection device.

Background

Along with the continuous improvement of the living standard of people, people pay more and more attention to the quality of life, and the requirements on various products are higher and higher. The use of bathtubs as bathroom products is becoming more and more widespread, and the quality of the bathtub filter cartridges equipped with bathtubs is important.

Bathtub cartridge filter often contains 3 pieces, specifically cartridge filter body and with first connecting piece and the second connecting piece that cartridge filter body both ends are connected (can refer to the description figure), cartridge filter body and with first connecting piece and second connecting piece are current to realize bonding or realize connecting through spin welding technique through PVC glue, because it is integrated into one piece when not producing, so probably in the connection process, because the not enough of technology leads to appearing cartridge filter body gas tightness not good, the condition of leaking when filtering appears after the installation, in order to detect the gas tightness of bathtub cartridge filter, therefore need a cartridge filter detection device that degree of automation is high.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the air tightness detection device for the filter cartridge, which can detect the air tightness of the filter cartridge of the bathtub and has the advantages of high automation degree and sufficient precision.

The air tightness detection device for the filter cartridge comprises a frame, wherein a detection platform is arranged at the top of the frame, a plurality of sealing modules for sealing openings of the filter cartridge are arranged on the detection platform, and each sealing module comprises a first air cylinder fixing plate, a movable air cylinder, a sliding piece, a second air cylinder fixing plate, a sealing air cylinder assembly, a limiting seat and a pressure sensor; the first cylinder fixing plate is arranged on the detection platform, the second cylinder fixing plate is connected to the first cylinder fixing plate through the sliding piece, the movable cylinder is arranged on the first cylinder fixing plate, and the output end of the movable cylinder is connected with the second cylinder fixing plate; the sealing cylinder assembly comprises a sealing cylinder, a cylinder fixing seat, a second fixing seat and an expansion sealing ring, wherein the sealing cylinder is fixed on the second cylinder fixing plate through the cylinder fixing seat, an output shaft of the sealing cylinder penetrates through a hole of the second fixing seat and is externally provided with a T-shaped piece with a T-shaped section, the diameter of the vertical end of the T-shaped piece is consistent with that of the hole of the second fixing seat, the horizontal end of the T-shaped piece is far away from the sealing cylinder, and the expansion sealing ring is arranged between the horizontal end of the T-shaped piece and the second fixing seat; the limiting seat is arranged on the side edge of one side, far away from the movable cylinder, of the first cylinder fixing plate; the second fixing seat is provided with an air charging hole, the air charging hole is connected with an air compressor through a pipeline and used for providing compressed air for the inside of the filter cartridge during testing, and the pressure sensor is arranged at a host of a leak detector connected with the air charging hole through a pipeline.

Preferably, the sealing module comprises 3 sealing modules, and the positions of the 3 sealing modules are arranged in a T shape. So that the bathtub filter cartridge is adapted.

Further, a limiting seat is arranged between the horizontal ends of the T-shaped formed by the 2 sealing modules, a notch is formed in the limiting seat, a limiting seat is arranged at one end, close to the other sealing modules, of the sealing modules, and an arc-shaped groove is formed in the limiting seat.

Further, the vertical ends of the sealing modules arranged in the T shape are provided with digital scales. The setting of digital scale makes the adjustment stroke length that can be accurate, and the slide rail on the first cylinder fixed plate of the vertical end of accessible "T" shape spare and set up on the second cylinder fixed plate with the spout adjustment position of slide rail adaptation for the not unidimensional bathtub cartridge filter of adaptation that can be better contains half subassembly etc..

Further, an air pressure system is arranged at the front end of the air charging hole, the air pressure system comprises a pressure regulating valve, a positive pressure air charging pipeline and a negative pressure air exhausting pipeline, the positive pressure air charging pipeline is connected with the pressure regulating valve, the positive pressure air charging pipeline comprises a sixth electromagnetic valve, a fourth electromagnetic valve and a third electromagnetic valve which are sequentially connected through pipelines, the negative pressure air exhausting pipeline comprises a fifth electromagnetic valve, a vacuum generator, a first electromagnetic valve, a fourth electromagnetic valve and a third electromagnetic valve, and an exhaust port is formed in the fourth electromagnetic valve.

Preferably, the sliding piece comprises a sliding rail arranged on the first cylinder fixing plate and a sliding groove arranged on the second cylinder fixing plate and matched with the sliding rail.

Preferably, a central control terminal is arranged in the middle of the stand, the central control terminal comprises a display screen, the central control terminal is used for acquiring and processing pressure data acquired by the pressure sensor, and the display screen is used for displaying related data.

Further, an electric control cabinet is arranged below the central control terminal and used for realizing the layout of lines, the placement of supporting equipment and facilities and the like.

Preferably, a plurality of universal wheels are arranged at the bottom end of the frame, and the device can be realized through the universal wheels when walking is needed.

Preferably, the side of testing platform is provided with the handle, makes things convenient for the device transport.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a filter cartridge air tightness detection device which comprises a frame, wherein a detection platform is arranged at the top of the frame, a plurality of sealing modules for sealing openings of a filter cartridge are arranged on the detection platform, and each sealing module comprises a first air cylinder fixing plate, a movable air cylinder, a sliding piece, a second air cylinder fixing plate, a sealing air cylinder assembly, a limiting seat and a pressure sensor. The second cylinder fixing plate is driven to move through the movable cylinder, then the sealing cylinder assembly enters each opening of the filter cylinder, then the movable cylinder contained in the sealing cylinder assembly drives to move away from one side of the opening, then the horizontal end of the T-shaped piece arranged at the output end of the sealing cylinder is matched with the second fixing seat to extrude the expansion sealing ring, the diameter of the section of the expansion sealing ring is enlarged, then each opening of the filter cylinder is sealed, then the inner cavity of the filter cylinder is inflated through the inflation hole, after the air pressure is stabilized, the pressure sensor monitors the air pressure change inside, when the pressure change is in a set value, the air tightness of the filter cylinder is good, if the filter cylinder cannot be inflated or is inflated fully, the air tightness is not satisfied, if the pressure change is too large, the filter cylinder is provided with leakage points, and the air tightness is not satisfied. Therefore, this cartridge filter gas tightness detection device can detect bathtub cartridge filter gas tightness fast, convenient operation, labour saving and time saving, and degree of automation is high, and the precision is sufficient, has market spreading value.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of a cartridge filter air tightness detection device according to the present utility model;

FIG. 2 is a schematic view of a three-dimensional structure of a seal module according to the present utility model;

FIG. 3 is a block diagram of a pneumatic system of the present utility model;

fig. 4 is a cross-sectional view of a bathtub filter cartridge to be tested.

Wherein:

100-frame, 200-testing platform, 300-first cylinder fixed plate, 400-movable cylinder, 500-slider, 600-second cylinder fixed plate, 700-sealing module, 800-limit seat, 900-central control terminal, 110-electric control cabinet, 120-universal wheel, 130-handle, 150-sealing cylinder, 160-cylinder fixed seat, 170-second fixed seat, 180-expansion sealing ring, 210-bathtub filter cartridge, 220-first connector, 230-second connector, 240-notch, 250-profiling groove, 260-arc groove, 270-sixth electromagnetic valve, 280-fourth electromagnetic valve, 290-third electromagnetic valve, 310-fifth electromagnetic valve, 320-vacuum generator, 330-first electromagnetic valve.

Detailed Description

The embodiments described below are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

referring to fig. 1 to 4, the present embodiment provides a filter cartridge air tightness detection device, which includes a frame 100, a detection platform 200 is disposed on top of the frame 100, a plurality of sealing modules 700 for sealing openings of the filter cartridge are disposed on the detection platform 200, and the sealing modules 700 include a first cylinder fixing plate 300, a movable cylinder 400, a sliding member 500, a second cylinder fixing plate 600, a sealing cylinder 150 assembly, a limiting seat 800, and a pressure sensor.

Specifically, the first cylinder fixing plate 300 is disposed on the detection platform 200, the second cylinder fixing plate 600 is disposed on the first cylinder fixing plate 300 through the sliding member 500, the movable cylinder 400 is disposed on the first cylinder fixing plate 300, and the output end of the movable cylinder 400 is connected with the second cylinder fixing plate 600. It should be noted that, the output end of the movable cylinder 400 drives the second cylinder fixing plate 600 to move, so that the sealed cylinder 150 assembly on the second cylinder fixing plate 600 enters each opening of the bathtub filter cartridge 210.

The second cylinder fixing plate 600 is provided with the sealing cylinder 150 assembly, the sealing cylinder 150 assembly comprises a sealing cylinder 150, a cylinder fixing seat 160, a second fixing seat 170 and an expansion sealing ring 180, the sealing cylinder 150 is fixed on the second cylinder fixing plate 600 through the cylinder fixing seat 160, an output shaft of the sealing cylinder 150 penetrates through a hole of the second fixing seat 170 and is externally provided with a T-shaped piece with a T-shaped section, the diameter of the vertical end of the T-shaped piece is consistent with the diameter of the hole of the second fixing seat 170, the horizontal end of the T-shaped piece is far away from the sealing cylinder 150, and the horizontal end of the T-shaped piece is provided with a T-shaped part; the expansion sealing ring 180 is arranged between the expansion sealing ring and the second fixing seat 170; specifically, because the second fixing seat 170 is fixed to the second cylinder fixing plate 600, the output end of the sealing cylinder 150 drives the horizontal end (i.e., the T-head) of the T-shaped member (with a T-shaped cross section) to cooperate with the second fixing seat 170 (with a fixed position) to squeeze the expansion seal ring 180, so that the diameter of the cross section of the expansion seal ring 180 is increased, and each opening of the filter cartridge is sealed, so that the following operations can be performed.

Specifically, the limiting seat 800 is disposed on a side of the first cylinder fixing plate 300 away from the movable cylinder 400; for placement of the bathtub filter cartridge 210.

Wherein, an air charging hole is disposed on one of the second fixing bases 170, and the air charging hole can enable air to reach the inside of the bathtub filter cartridge 210 through a hole disposed inside the second fixing base 170. The air charging hole is connected with an air compressor through a pipeline, so that compressed air is supplied to the inside of the filter cartridge during testing, and the pressure sensor is arranged at a host of a leak detector connected with the air charging hole through a pipeline. It should be noted that the pressure sensor may be an ASAIR olone electronic gas sensor, or may be other pressure sensors, and only the gas pressure detection is required.

Referring to fig. 4, preferably, the sealing module comprises 3, and 3 positions of the sealing module are provided with a matched bathtub filter cartridge 210 in a T shape. Specifically, the bathtub filter cartridge 210 includes a filter cartridge body, and a first connecting piece 220 and a second connecting piece 230 connected with two ends of the filter cartridge body, one end of the first connecting piece 220, which is far away from the filter cartridge body, is provided with a through hole connected with the bathtub, one end of the second connecting piece 230, which is far away from the filter cartridge body, is provided with a first water return port connected with the waterway and a second water return port, and the axis of the length direction of the through hole is perpendicular to the axis connected with the first water return port and the second water return port. Thus, in this embodiment, 3 positions of the sealing modules are arranged in a "T" shape.

Further, a limiting seat 800 is disposed between the horizontal ends of the T-shape formed by the 2 sealing modules, the limiting seat 800 is provided with a notch 240, the notch 240 is recessed downwards to form a profiling groove 250 adapted to the filter cartridge, one end of the other sealing module, which is close to the other sealing modules, is provided with a limiting seat 800, and the limiting seat 800 is provided with an arc groove 260. It should be noted that, the configuration of the profiling groove makes the placement of the bathtub filter cartridge 210 more appropriate when detecting, preventing the running.

Further, the vertical ends of the sealing modules arranged in the T shape are provided with digital scales. The arrangement of the digital scale allows for accurate adjustment of the stroke length, through the slide rail on the first cylinder fixing plate 300 at the vertical end of the "T" shaped member, and the slide slot adjustment position on the second cylinder fixing plate 600 that is adapted to the slide rail, so that the bathtub filter cartridge of different sizes, including the half assembly, etc. can be better adapted. The half assembly in this embodiment is a bathtub filter cartridge 210 without the second connecting piece 230, when the half assembly is detected, the first water return port and the second water return port are sealed by 2 sealing modules at the horizontal end of the "T" shape, the opening of the filter cartridge body is sealed by another sealing module, when the half assembly is detected relative to the bathtub filter cartridge 210 with the second connecting piece 230, the sliding rail on the first cylinder fixing plate 300 at the vertical end of the "T" shape member can be detected, and the sliding groove adjusting position matched with the sliding rail is arranged on the second cylinder fixing plate 600.

Further, an air pressure system is provided at the front end of the air charging hole, the air pressure system comprises a pressure regulating valve, a positive pressure air charging pipeline and a negative pressure air exhausting pipeline, the positive pressure air charging pipeline is connected with the pressure regulating valve, the positive pressure air charging pipeline comprises a sixth electromagnetic valve 270, a fourth electromagnetic valve 280 and a third electromagnetic valve 290, which are sequentially connected through pipelines, the negative pressure air exhausting pipeline comprises a fifth electromagnetic valve 310, a vacuum generator 320, a first electromagnetic valve 330, the fourth electromagnetic valve 280 and the third electromagnetic valve 290, wherein the fourth electromagnetic valve 280 is provided with an air outlet.

Referring to fig. 3, it should be noted that the pneumatic system works as follows:

1.0, positive pressure inflation: compressed air supplied from the air compressor is changed to a predetermined test pressure (for example, 10 KPa) through the pressure regulating valve, and the opened sixth solenoid valve 270 and the opened third solenoid valve 290 are filled into the sealed cavity of the test mold and the bathtub filter cartridge 210. After the inflation set time has elapsed, the sixth solenoid valve 270 and the third solenoid valve 290 are closed. The fourth solenoid valve 280 remains closed throughout the inflation phase.

1.1, negative pressure air extraction: compressed air supplied from the air compressor is changed into a preset test pressure (such as 10 KPa) through a pressure regulating valve, a negative pressure is formed through the opened fifth electromagnetic valve 310, the negative pressure is formed by the opened first electromagnetic valve 330, the closed fourth electromagnetic valve 280, and the opened third electromagnetic valve 290 is filled into a sealed cavity of the test mold and the bathtub filter cartridge 210. After the inflation set time has elapsed, the fifth solenoid valve 310, the first solenoid valve 330 and the third solenoid valve 290 are closed. During the bleed phase, the fourth solenoid valve 280 remains closed at all times.

2. Stabilizing pressure: when the third electromagnetic valve 290 is closed, the compressed air filled into the mold has certain fluctuation, and a pressure stabilizing time is required to be set so as to enable the compressed air to reach a stable state; during the pressure stabilization phase, the sixth solenoid valve 270, the fourth solenoid valve 280, and the third solenoid valve 290 remain closed all the time. The pressure sensor constantly monitors the pressure in the stabilizing process and records the pressure P1 when the stabilizing is finished;

3. and (3) testing: when the stabilized pressure time is reached, the product leakage test stage is entered, and the sixth solenoid valve 270, the fourth solenoid valve 280 and the third solenoid valve 290 are always kept closed for the set test time. The pressure sensor continuously detects the change deltap of the calculated pressure and displays that the larger the leakage value P is, the larger the product leakage is.

4. And (3) judging:

(1) And (3) large leakage test, namely when the test pressure P1 of the product is smaller than the set lower limit of the inflation pressure, the representative air pressure cannot be inflated, the product is large leaked, and the instrument judges that the test product NG (i.e. unqualified).

(2) And (3) micro leakage test, namely when the leakage value P of the product is larger than the set upper leakage limit, representing that the product has micro leakage and exceeds the leakage acceptance standard, determining that the tested product NG (i.e. disqualification) by the instrument.

(3) Only when the test pressure P1> of the product sets the lower limit of air intake and the leakage value is smaller than the set upper limit of leakage, the instrument can judge that the product is qualified.

5. And (3) exhausting: when the test is completed, the compressed air in the bathtub filter cartridge 210 is exhausted, so that an exhaust time is set, during which the third solenoid valve 290 is opened and the fourth solenoid valve 280 is opened. The pressure sensor constantly monitors the pressure of the exhaust process.

Preferably, a central control terminal 900 is disposed in the middle of the rack 100, where the central control terminal 900 includes a display screen, and the central control terminal 900 is configured to acquire and process pressure data collected by the pressure sensor, and the display screen is configured to display related data. The central control terminal 900 is also provided with a PLC processor, the model can be an LPC2294 PLC processor, and the other models can also be used.

Preferably, an electric control cabinet 110 is disposed below the central control terminal 900, so as to implement layout of circuits, placement of air compressors, and the like. The bottom end of the frame 100 is provided with a plurality of universal wheels 120, and when the device needs to walk, the device can be realized through the universal wheels 120. The side of the detection platform 200 is provided with a handle 130, which is convenient for carrying the device. The sliding member 500 includes a sliding rail provided on the first cylinder fixing plate 300, and a sliding groove provided on the second cylinder fixing plate 600 and adapted to the sliding rail.

It should also be noted that the detection of the pressure sensor and the processing of the data are common applications in the art and do not involve improvements in the computer program. The details of the "study of the leakage detection system of the water supply pipeline based on the pressure wave method" published in "engineering science and technology II" will not be repeated here.

The utility model provides a filter cartridge air tightness detection device, which comprises a frame 100, wherein a detection platform 200 is arranged at the top of the frame 100, a plurality of sealing modules for sealing openings of a filter cartridge are arranged on the detection platform 200, and each sealing module comprises a first air cylinder fixing plate 300, a movable air cylinder 400, a sliding piece 500, a second air cylinder fixing plate 600, a sealing air cylinder 150 assembly, a limiting seat 800 and a pressure sensor. The second cylinder fixing plate 600 is driven to move through the movable cylinder 400, so that the sealed cylinder 150 assembly enters each opening of the filter cartridge, then, the movable cylinder 400 contained in the sealed cylinder 150 assembly drives one side far away from the opening to move, then, the vertical end and the horizontal end of the T-shaped piece arranged at the output end of the sealed cylinder 150 are matched with the second fixing seat 170 to extrude the expansion sealing ring 180, the diameter of the section of the expansion sealing ring 180 is enlarged, each opening of the filter cartridge is further sealed, the inner cavity of the filter cartridge is inflated through the inflation hole, after the air pressure is stabilized, the internal air pressure change is monitored through the pressure sensor, when the pressure change is in a set value, the air tightness of the filter cartridge is good, if the filter cartridge cannot be inflated or the pressure change is overlarge after the inflation is full, the filter cartridge has leakage points, and the air tightness does not meet the requirements. Therefore, this cartridge filter gas tightness detection device can detect bathtub cartridge filter 210 gas tightness fast, convenient operation, labour saving and time saving, and degree of automation is high, and the precision is sufficient, has market spreading value.

The foregoing disclosure is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. The utility model provides a cartridge filter gas tightness detection device, contains a frame, its characterized in that: the top of the frame is provided with a detection platform, the detection platform is provided with a plurality of sealing modules for sealing the openings of the filter cylinders, and each sealing module comprises a first cylinder fixing plate, a movable cylinder, a sliding piece, a second cylinder fixing plate, a sealing cylinder assembly, a limiting seat and a pressure sensor;

the first cylinder fixing plate is arranged on the detection platform, the second cylinder fixing plate is connected to the first cylinder fixing plate through the sliding piece, the movable cylinder is arranged on the first cylinder fixing plate, and the output end of the movable cylinder is connected with the second cylinder fixing plate;

the sealing cylinder assembly comprises a sealing cylinder, a cylinder fixing seat, a second fixing seat and an expansion sealing ring, wherein the sealing cylinder is fixed on the second cylinder fixing plate through the cylinder fixing seat, an output shaft of the sealing cylinder penetrates through a hole of the second fixing seat and is externally provided with a T-shaped piece with a T-shaped section, the diameter of the vertical end of the T-shaped piece is consistent with that of the hole of the second fixing seat, the horizontal end of the T-shaped piece is far away from the sealing cylinder, and the expansion sealing ring is arranged between the horizontal end of the T-shaped piece and the second fixing seat;

the limiting seat is arranged on the side edge of one side, far away from the movable cylinder, of the first cylinder fixing plate;

the second fixing seat is provided with an air charging hole, the air charging hole is connected with an air compressor through a pipeline and used for providing compressed air for the inside of the filter cartridge during testing, and the pressure sensor is arranged at a host of a leak detector connected with the air charging hole through a pipeline.

2. The filter cartridge tightness detection device as claimed in claim 1, wherein the sealing module comprises 3, 3 sealing module positions arranged in a T shape.

3. The filter cartridge tightness detection device as claimed in claim 2, wherein a limit seat is provided between horizontal ends of the "T" shape formed by the 2 seal modules, the limit seat is provided with a notch, one end of the other seal module, which is close to the other seal modules, is provided with a limit seat, and the limit seat is provided with an arc-shaped groove.

4. The cartridge filter air tightness detection device as recited in claim 1, wherein the vertical ends of the 3 sealing modules arranged in the "T" shape are provided with digital scales.

5. The filter cartridge tightness detection device as claimed in claim 1, wherein an air pressure system is provided at the front end of the air charging hole, the air pressure system comprises a pressure regulating valve, a positive pressure air charging pipeline and a negative pressure air exhausting pipeline, the positive pressure air charging pipeline comprises a sixth electromagnetic valve, a fourth electromagnetic valve and a third electromagnetic valve which are sequentially connected through pipelines, the negative pressure air exhausting pipeline comprises a fifth electromagnetic valve, a vacuum generator, a first electromagnetic valve, the fourth electromagnetic valve and the third electromagnetic valve, and the fourth electromagnetic valve is provided with an exhaust port.

6. The filter cartridge tightness detection device of claim 1 wherein the slide comprises a slide rail disposed on the first cylinder fixing plate and a slide slot disposed on the second cylinder fixing plate that mates with the slide rail.

7. The filter cartridge tightness detection device as claimed in claim 1, wherein a central control terminal is provided at a middle portion of the frame, and the central control terminal includes a display screen.

8. The filter cartridge tightness detection device as claimed in claim 7, wherein an electric control cabinet is provided below the central control terminal.

9. The cartridge air tightness detection device of claim 1, wherein a plurality of universal wheels are provided at a bottom end of the frame.

10. The cartridge air tightness detection device as recited in claim 1, wherein a handle is provided at a side of the detection platform.