CN210119421U - Air filter element simulation bacterium operating mode filtration efficiency check out test set - Google Patents
Air filter element simulation bacterium operating mode filtration efficiency check out test set Download PDFInfo
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- CN210119421U CN210119421U CN201920592614.1U CN201920592614U CN210119421U CN 210119421 U CN210119421 U CN 210119421U CN 201920592614 U CN201920592614 U CN 201920592614U CN 210119421 U CN210119421 U CN 210119421U
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Abstract
The utility model relates to the technical field of machinery. A kind of air filter element imitates the bacterium working condition and filters the efficiency detection equipment, including test tank and aerosol conveying mechanism, the aerosol conveying mechanism includes nitrogen gas steel cylinder and aerosol generator, the air outlet of the nitrogen gas steel cylinder and compressed air inlet of the aerosol generator, the dust source of the aerosol generator is PAO oil; the test tank comprises a tank body and a tank cover, and an air inlet of the test tank is connected with a ventilation pipeline; the air pipeline is provided with an introducing port for introducing the aerosol, and the introducing port is in butt joint conduction with an air outlet of the aerosol generator through a conveying pipeline; the tank cover is provided with at least two insertion ports for inserting the filter element; a sampling port is formed in the side wall of the test tank, and a valve is mounted on the sampling port. The particle that this patent produced the aerosol generator that the dust source is PAO oil replaces the particle that current microorganism aerosol generator produced, and the device is simple.
Description
Technical Field
The utility model relates to the technical field of machinery, concretely relates to filter core filtration efficiency check out test set.
Background
In the filter element production and use industry, multiple tests are needed to develop a new air sterilization filter element product. The aerosol bacteria entrapment test is one of the indispensable tests. The aerosol bacteria retention test is a test in which a bacterial suspension is first aerosolized and then the air filter is challenged to obtain a filter element retention capacity for 0.3um particles.
The existing aerosol bacteria interception test method is complex, the device is complex and tedious, for example, patent No. 201721814117.9 discloses an air filter aerosol bacteria interception test system, the microbial aerosol generated by a microbial aerosol generator is adopted to simulate bacteria for testing, the instrument is complex and large, and the aerosol bacteria interception test system is not suitable for testing in a production factory. The existing aerosol bacteria interception test has high requirements on test conditions (such as environmental cleanliness) and personnel operation, production plants often have no conditions to carry out, and the outsourcing test is generally needed, so that the speed of developing new products is greatly delayed.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides an air filter simulation bacterium operating mode filtration efficiency check out test set to solve above-mentioned at least one technical problem.
The technical scheme of the utility model is that: a kind of air filter element imitates the bacterium working condition and filters the efficiency detection equipment, including test tank and aerosol conveying mechanism used for installing the filter element, characterized by that, the said aerosol conveying mechanism includes nitrogen gas steel cylinder and aerosol generator, the air outlet of the said nitrogen gas steel cylinder couples to compressed air inlet of the said aerosol generator, the dust source of the said aerosol generator is PAO oil;
the test tank comprises a tank body and a tank cover, an air inlet of the test tank is arranged on the side wall of the tank body, and the air inlet of the test tank is connected with a ventilation pipeline; the air pipeline is provided with an introducing port for introducing aerosol, and the introducing port is in butt joint conduction with an air outlet of the aerosol generator through a conveying pipeline;
the tank cover is provided with at least two insertion ports for inserting the filter element, the upper side and the lower side of the tank cover at the insertion ports are respectively provided with a clamping groove for clamping the filter element interface, and the filter element interface part is inserted in the insertion ports;
a sampling port is formed in the side wall of the test tank, and a valve is mounted on the sampling port;
an oil discharge port is formed in the bottom of the test tank, and a valve is mounted on the oil discharge port.
The particle that this patent produced the aerosol generator that the dust source is PAO oil is similar with the particle that current microorganism aerosol generator produced, is about 0.3 micron, so carry out simulation aerosol bacterium interception test through the aerosol that adopts aerosol generator to produce, use the entrapment rate of aerosol photometer to detect the filter core. The whole system configuration is simple, and the cleanliness factor requirement to the environment is less than traditional microorganism aerosol greatly and tests required cleanliness factor requirement, and ordinary indoor environment can operate, and convenient operation can obtain the result in real time, and the test tank has a plurality of sockets, can satisfy the detection demand of a plurality of filter cores, satisfies modern production efficient requirement, greatly reduced the capital input of production.
This patent all is equipped with the draw-in groove through the upside and the downside of cover, and the filter house setting of being convenient for realize the filter core is at jar internal or set up at jar external, realizes putting and the switching of putting two kinds of modes under and of filter core.
The flow guide of the particles generated by the aerosol generator to the test tank is realized through the ventilation pipeline.
PAO oil is a commercially available product, also known as poly α -olefin base oil, and can be selected as Emery 3004.
Further preferably, the number of the insertion openings is three, the three insertion openings are annularly arranged by taking the central axis of the tank cover as a central line, and handles are mounted at two ends of the tank cover.
When being convenient for take of cover, be convenient for realize the evenly installed distribution of filter core.
Further preferably, the periphery of the socket is connected with a vertically arranged arc-shaped piece, and the top end of the arc-shaped piece is connected with a limiting piece extending inwards in the radial direction;
the arc-shaped sheet, the limiting sheet and the outer surface of the tank cover are enclosed to form the clamping groove;
the outer wall of the filter element interface is provided with two fan-shaped sheets which extend outwards in the radial direction and are used for being inserted into the clamping grooves.
The fan-shaped sheet is convenient to clamp in the clamping groove for limiting.
Further preferably, the distance from the air inlet of the tank body to the tank cover is greater than the axial length of the filter element.
Further preferably, the sampling port is positioned at the lower end part of the tank body;
the height of the tank body is greater than 2 times of the axial length of the filter element and less than 4 times of the axial length of the filter element.
The aerosol photometer is convenient to ensure to stretch into the sampling port, and the PAO concentration is used as a reference value when the test is carried out under the condition that the test is not filtered by the filter element.
Further preferably, the sampling port is connected with a sampling tube, and the tube orifice of the sampling tube is matched with the head of a sampling probe of the aerosol photometer.
The butt-joint sampling of the aerosol photometer is convenient.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the can lid of the present invention;
FIG. 3 is a top view of the can lid of the present invention;
FIG. 4 is a partial enlarged view of the test tank of the present invention;
fig. 5 is a schematic view of a local structure at a filter element interface of the filter element of the present invention.
In the figure: 1 is the nitrogen gas steel bottle, 2 is the aerosol generator, 3 is the test tank, 4 is the aerosol photometer, 5 is the vent line, 6 is the filter core, 31 is the jar body, 32 is the cover, 33 is the sample connection, 34 is the oil drain port, 35 is the sampling pipe, 36 is the draw-in groove, 37 is the handle, 38 is spacing piece, 41 is the sampling probe, 61 is the annular groove, 62 is the fan-shaped piece.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, an air filter element simulation bacteria working condition filtration efficiency detection device comprises a test tank 3 for installing a filter element 6 and an aerosol conveying mechanism, wherein the aerosol conveying mechanism comprises a nitrogen steel cylinder 1 and an aerosol generator 2, an air outlet of the nitrogen steel cylinder 1 is connected with a compressed air inlet of the aerosol generator 2, and a dust source of the aerosol generator 2 is PAO oil; the test tank 3 comprises a tank body 31 and a tank cover 32, an air inlet of the test tank 3 is arranged on the side wall of the tank body 31, and the air inlet of the test tank 3 is connected with a ventilation pipeline; the ventilation pipeline is provided with an introducing port for introducing the aerosol, and the introducing port is in butt joint conduction with the air outlet of the aerosol generator 2 through a conveying pipeline; the cover 32 is provided with at least two insertion ports for inserting the filter element, the upper side and the lower side of the cover 32 at the insertion ports are provided with clamping grooves 36 for clamping the filter element interfaces, and the filter element interfaces are partially inserted into the insertion ports; a sampling port 33 is formed in the side wall of the test tank 3, and a valve is mounted on the sampling port 33; the bottom of the test tank 3 is provided with an oil outlet 34, and the oil outlet 34 is provided with a valve. The particle that aerosol generator 2 that this patent will send out the dust source for PAO oil produced is similar with the particle that current microorganism aerosol generator 2 produced, is about 0.3 micron, so carry out simulation aerosol bacterium interception test through the aerosol that adopts aerosol generator 2 to produce, use aerosol photometer 4 to detect the entrapment rate of filter core. Whole system configuration is simple, and the cleanliness factor requirement to the environment is less than traditional microorganism aerosol greatly and tests required cleanliness factor requirement, and ordinary indoor environment can operate, and convenient operation can obtain the result in real time, and test tank 3 has a plurality of sockets, can satisfy the detection demand of a plurality of filter cores, satisfies modern production efficient requirement, greatly reduced the capital input of production. This patent all is equipped with draw-in groove 36 through the upside and the downside of cover 32, and the filter media portion setting of being convenient for realize the filter core is in jar body 31 or set up outside jar body 31, realizes putting and the switching of putting two kinds of modes of falling of filter core. The flow of the particles generated by the aerosol generator 2 into the test tank 3 is effected via the ventilation line 5. The air inlet end of the ventilation pipeline is connected with an air pump for pumping the atmosphere. The air inlet end of the ventilation pipeline is provided with a valve.
The leading-in opening is arranged on the ventilation pipeline and is adjacent to the air inlet. The aerosol generator is located below the ventilation pipeline.
PAO oil is a commercially available product, also known as poly α -olefin base oil, and can be selected as Emery 3004.
The aerosol generator was model number TDA-5B, ATI, USA.
The aerosol photometer is model number TDA-2H of ATI, USA.
The number of the insertion holes may be three, the three insertion holes are annularly arranged with the central axis of the tank cover 32 as the central line, and the handles 37 are installed at both ends of the tank cover 32. The cover 32 is convenient to take, and meanwhile, the filter elements are convenient to uniformly install and distribute.
The periphery of the socket is connected with a vertically arranged arc-shaped piece, and the top end of the arc-shaped piece is connected with a limiting piece 38 which extends radially inwards; the arc-shaped sheet, the limiting sheet 38 and the outer surface of the tank cover 32 are enclosed to form a clamping groove 36; two fan-shaped pieces 62 which radially extend outwards and are inserted into the clamping grooves are arranged on the outer wall of the filter element connector. So that the fan-shaped piece 62 is clamped in the clamping groove 36 for limiting. The outer wall of the filter element interface is provided with at least two annular grooves 61 for embedding the sealing ring. And when the filter element interface part is inserted into the socket, the sealing ring is propped against the inner wall of the socket. The draw-in groove is equipped with two, and two draw-in grooves control the setting, are equipped with two segmental plates on the filter core interface. The gap between the two slots is an insertion opening for inserting the fan-shaped piece. After the fan-shaped piece is inserted from the area between the two clamping grooves, the fan-shaped piece is abutted to the outer surface of the tank cover and then is rotated in the clamping grooves in the circumferential direction to be limited and fixed.
The distance from the air inlet of the can body 31 to the can cover 32 is greater than the axial length of the filter element.
The sampling port 33 is positioned at the lower end part of the tank body 31; the height of the tank 31 is 2 times greater than the axial length of the filter element and 4 times less than the axial length of the filter element. The aerosol photometer can be conveniently ensured to extend into the sampling port 33, and the PAO concentration under the condition that the test is not filtered by the filter element is taken as a reference value.
The sampling port 33 is connected with a sampling tube 35, and the nozzle of the sampling tube 35 is matched with the head of a sampling probe 41 of the aerosol photometer. The butt-joint sampling of the aerosol photometer is convenient.
The inner sides of the can body and can lid are coated with an oleophobic coating. Reduce the adhesion of oil stains. Can be selected as the nano coating super oleophobic coating.
The output end of the nitrogen steel cylinder 1 is fixedly provided with a pressure reducing valve.
The method comprises the steps of adding PAO oil (poly α -olefin base oil Emery3004) into a TDA-5B aerosol generator, firstly installing a pressure reducing valve at the output end of a nitrogen steel cylinder, connecting the air outlet of the pressure reducing valve with the TDA-5B aerosol generator through a pressure resistant pipe, opening a nitrogen valve, adjusting the pressure reducing valve to keep the nitrogen pressure at 0.35Mpa, opening a power switch of the TDA-5B aerosol generator, automatically heating a machine, opening a smoke generation switch when the temperature reaches 420 ℃, adjusting the required smoke generation amount by using a flow adjusting knob, enabling the generated aerosol to enter a test tank through a ventilation pipeline, enabling the air pressure of the ventilation pipeline to be 0.35Mpa, enabling 3 filter element slots on the test tank to simultaneously measure filter elements with 3 specifications, after the TDA-5B aerosol generator starts to smoke generation for 5-6 minutes, opening a sampling port valve to test the concentration of upstream PAO by using a sampling probe of the TDA-2H aerosol as a reference value, then closing the sampling port, intercepting the sampling probe of the filter element of the TDA-2H aerosol generator when the filter element is installed below a filter element, and scanning filter element, and detecting whether the filter element leakage rate of the filter element of the photometer is detected by scanning probe, and scanning, and detecting whether the leakage rate of the filter element is detected by scanning the filter element, and the filter element of the filter element is detected by scanning.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A kind of air filter element imitates the bacterium working condition and filters the efficiency detection equipment, including test tank and aerosol conveying mechanism used for installing the filter element, characterized by that, the said aerosol conveying mechanism includes nitrogen gas steel cylinder and aerosol generator, the air outlet of the said nitrogen gas steel cylinder couples to compressed air inlet of the said aerosol generator, the dust source of the said aerosol generator is PAO oil;
the test tank comprises a tank body and a tank cover, an air inlet of the test tank is arranged on the side wall of the tank body, and the air inlet of the test tank is connected with a ventilation pipeline; the air pipeline is provided with an introducing port for introducing aerosol, and the introducing port is in butt joint conduction with an air outlet of the aerosol generator through a conveying pipeline;
the tank cover is provided with at least two insertion ports for inserting the filter element, the upper side and the lower side of the tank cover at the insertion ports are respectively provided with a clamping groove for clamping the filter element interface, and the filter element interface part is inserted in the insertion ports;
a sampling port is formed in the side wall of the test tank, and a valve is mounted on the sampling port;
an oil discharge port is formed in the bottom of the test tank, and a valve is mounted on the oil discharge port.
2. The air filter element simulated bacteria working condition filtration efficiency detection equipment as claimed in claim 1, wherein: the socket is equipped with threely, three socket with the central axis of cover is cyclic annular setting as the central line, just the handle is all installed at the both ends of cover.
3. The air filter element simulated bacteria working condition filtration efficiency detection equipment as claimed in claim 1, wherein: the periphery of the socket is connected with a vertically arranged arc-shaped piece, and the top end of the arc-shaped piece is connected with a limiting piece which extends radially inwards;
the arc-shaped sheet, the limiting sheet and the outer surface of the tank cover are enclosed to form the clamping groove;
the outer wall of the filter element interface is provided with two fan-shaped sheets which extend outwards in the radial direction and are used for being inserted into the clamping grooves.
4. The air filter element simulated bacteria working condition filtration efficiency detection equipment as claimed in claim 1, wherein: the distance from the air inlet of the tank body to the tank cover is greater than the axial length of the filter element.
5. The air filter element simulated bacteria working condition filtration efficiency detection equipment as claimed in claim 1, wherein: the sampling port is positioned at the lower end part of the tank body;
the height of the tank body is greater than 2 times of the axial length of the filter element and less than 4 times of the axial length of the filter element.
6. The air filter element simulated bacteria working condition filtration efficiency detection equipment as claimed in claim 1, wherein: the sampling port is connected with a sampling tube, and the tube opening of the sampling tube is matched with the head of a sampling probe of the aerosol photometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920592614.1U CN210119421U (en) | 2019-04-28 | 2019-04-28 | Air filter element simulation bacterium operating mode filtration efficiency check out test set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920592614.1U CN210119421U (en) | 2019-04-28 | 2019-04-28 | Air filter element simulation bacterium operating mode filtration efficiency check out test set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210119421U true CN210119421U (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920592614.1U Expired - Fee Related CN210119421U (en) | 2019-04-28 | 2019-04-28 | Air filter element simulation bacterium operating mode filtration efficiency check out test set |
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| Country | Link |
|---|---|
| CN (1) | CN210119421U (en) |
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2019
- 2019-04-28 CN CN201920592614.1U patent/CN210119421U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200228 |