CN112033876B - Air filter test system for general ventilation - Google Patents

Air filter test system for general ventilation Download PDF

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Publication number
CN112033876B
CN112033876B CN202010944402.2A CN202010944402A CN112033876B CN 112033876 B CN112033876 B CN 112033876B CN 202010944402 A CN202010944402 A CN 202010944402A CN 112033876 B CN112033876 B CN 112033876B
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China
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air
fixedly connected
wall
riser
air filter
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CN112033876A (en
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孙民
王树立
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Suzhou Huada Instrument & Equipment Co ltd
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Suzhou Huada Instrument & Equipment Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/084Testing filters

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention relates to a general ventilation air filter testing system which comprises a control box, wherein an operation table is fixedly connected to the top of the control box, an air inlet mechanism is fixedly connected to the top of the operation table, a positioning mechanism is arranged on the right side of the air inlet mechanism, a detection box is fixedly connected to the right side of the positioning mechanism, the air inlet mechanism comprises a vertical plate and an air inlet pipe, the vertical plates are respectively arranged at two ends of the air inlet pipe, the air inlet pipe is symmetrically arranged between the vertical plates, manual supporting tests are avoided, the system can be suitable for air filters with different sizes, air quality in different air collection tanks is detected by using an air quality sensor, the filtering effect of which air filter is insufficient is obtained by data comparison, the testing efficiency is further improved, the filtering rate of the air filter is effectively improved, and the condition that the detection effect is inaccurate due to contact between excessive filtered air and external air in the use process is avoided.

Description

Air filter test system for general ventilation
Technical Field
The invention relates to a general ventilation air filter testing system, and belongs to the technical field of air filter performance testing.
Background
The general ventilation air filter comprises four types of coarse-effect filters, medium-effect filters, high-medium-effect filters and sub-high-effect filters, wherein the four types of coarse-effect filters, medium-effect filters, high-medium-effect filters and sub-high-effect filters can protect ventilation equipment and parts in an air conditioning ventilation system, prolong the service life of equipment such as the high-effect filters, enhance the long-term heat exchange performance of a heat exchanger, reduce or delay secondary pollution after the air conditioning system is operated, and although the air filters have certain importance, people attach little importance to the air filters, at present, china attach little importance to the general ventilation air filter mainly because of lacking corresponding test standards and test systems and scientific evaluation and test methods, after production and processing are completed, the air filters are required to be tested, and the air filters can be packaged and transported if qualified, and only whether the air filter process meets the standards or not is tested, and the filtering effect of the air filters cannot be compared and detected.
Disclosure of Invention
The invention aims to overcome the existing defects, and provides a general ventilation air filter testing system which can effectively solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides an air cleaner test system for general ventilation, includes the control box, control box top fixedly connected with operation panel, operation panel top fixedly connected with air inlet mechanism, the air inlet mechanism right side is equipped with positioning mechanism, positioning mechanism right side fixedly connected with detection case, air inlet mechanism includes riser, air-supply line, the riser sets up respectively in the air-supply line both ends, just the air-supply line symmetry sets up between the riser, fixedly connected with first exhaust fan between the air-supply line inner wall, positioning mechanism includes limiting plate, guide bar, roof, the limiting plate symmetry sets up in the roof below, the guide bar symmetry sets up in the limiting plate top respectively, guide bar top and roof fixed connection, link up on the roof and be equipped with adjusting bolt, adjusting bolt bottom fixedly connected with clamp plate, the detection case includes shell, inner shell, the inner shell is located inside the shell, just inner shell outer wall and shell inner wall front side sliding connection, fixedly connected with baffle between the outer shell inner wall, the baffle is located the inner shell rear side, the symmetry is equipped with the roof, the exhaust fan is equipped with the exhaust air collector, the exhaust fan is equipped with the exhaust gas jar is connected with in the equal to the air-collecting channel, the exhaust fan is connected with the air-collecting vessel in the outside.
As further description of the scheme, the two ends of the air inlet pipe respectively penetrate through the outer sides of the vertical plates, threaded hole grooves are formed in the edges of the two ends of the air inlet pipe at equal intervals, the air inlet pipe is externally and singly connected with the air guide pipe in a through mode, flanges are arranged at the inner ends of the air guide pipe, and the threaded hole grooves are fixedly connected with the flanges at one end of the air guide pipe through connecting bolts.
As further description of the scheme, the bottom side of the limiting plate is fixedly connected with the top of the operating platform, through holes are formed in four corners of the pressing plate, and the pressing plate is slidably connected with the outer wall of the guide rod through the through holes.
As a further description of the scheme, a threaded pipe is arranged in the center of the top side of the top plate in a penetrating manner, and the outer wall of the adjusting bolt is in threaded connection with the inner wall of the threaded pipe.
As further description of the scheme, the right side limiting plates and the right side of the top plate are symmetrically provided with connecting columns respectively, connecting holes are formed in four corners on the outer side of the inner shell in a digging mode respectively, and the connecting holes correspond to the positions of the connecting columns and are matched and clamped fixedly.
As further description of the scheme, the bottom side of the outer shell is fixedly connected with the top of the operating platform, and sealing gasket strips are arranged at the outer side edges of the inner shell and are respectively arranged between the sealing gasket strips and the connecting columns.
As a further description of the above scheme, the outer end of the air release pipe is connected with an air release valve through a pipeline, and the air release valve is specifically a manual valve.
As further description of the scheme, a single-chip microcomputer is arranged in the inner cavity of the control box, a manual switch module and an external display are respectively embedded on the outer wall of the control box, the control input ends of the first exhaust fan and the second exhaust fan are respectively connected with the single-chip microcomputer, the signal output end of the single-chip microcomputer is electrically connected with the input end of the external display, and the signal input end of the single-chip microcomputer is electrically connected with the air quality sensor and the signal output end of the manual switch module.
The invention has the beneficial effects that:
1. through setting up adjusting bolt and clamp plate, make adjusting bolt drive the clamp plate and descend to can press the location to air filter top, avoid artifical manual support test, simultaneously, can be applicable to the air filter of equidimension not;
2. through setting up exhaust pipe and second air discharge fan, can be quick collect the air after filtering, blow into different air collection jar inside respectively, can utilize air quality sensor to detect the air quality in the different air collection jar to carry out the data contrast and obtain which air filter's filter effect is not enough, the efficiency of test is further improved;
3. by arranging the threaded hole groove and the air guide pipe, the air guide pipe can effectively concentrate the air blown by the first exhaust fan to be contacted with the air filter to be detected, so that the filtering rate of the air filter is effectively improved;
4. through setting up spliced pole and connecting hole, can make positioning mechanism be connected with the detection case, can effectually increase its leakproofness of connecting, avoid the too much condition that leads to the fact the detection effect inaccurate with the contact of external air of air after filtering in the use.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Fig. 1 is a schematic view showing the external structure of a general ventilation air filter test system according to the present invention.
Fig. 2 is a front view of an air intake mechanism of a typical ventilation air filter testing system of the present invention.
FIG. 3 is a schematic view of the positioning mechanism of a general ventilation air filter testing system according to the present invention.
Fig. 4 is a front view of a test case of a general ventilation air filter test system of the present invention.
Fig. 5 is a schematic cross-sectional view of a housing of a general ventilation air filter testing system according to the present invention.
Fig. 6 is a schematic block diagram of a typical ventilation air filter test system of the present invention.
Reference numerals in the drawings: 1. a control box; 2. an operation table; 3. an air inlet mechanism; 4. a positioning mechanism; 5. a detection box; 6. a vertical plate; 7. an air inlet pipe; 8. a first exhaust fan; 9. a limiting plate; 10. a guide rod; 11. a top plate; 12. an adjusting bolt; 13. a pressing plate; 14. a housing; 15. an inner case; 16. a baffle; 17. an exhaust pipe; 18. a second exhaust fan; 19. a gas collection tank; 20. an air quality sensor; 21. a gas discharge tube; 22. a threaded hole groove; 23. an air guide pipe; 24. a threaded tube; 25. a connecting column; 26. a connection hole; 27. a sealing gasket strip; 28. and a release valve.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides an air cleaner test system for general ventilation, includes control box 1, control box 1 top fixedly connected with operation panel 2, operation panel 2 top fixedly connected with air inlet mechanism 3, air inlet mechanism 3 right side is equipped with positioning mechanism 4, positioning mechanism 4 right side fixedly connected with detection case 5, air inlet mechanism 3 includes riser 6, air-supply line 7, riser 6 sets up respectively in air-supply line 7 both ends, just air-supply line 7 symmetry sets up between riser 6, fixedly connected with first air discharge fan 8 between the inner wall of air-supply line 7, positioning mechanism 4 includes limiting plate 9, guide bar 10, roof 11, limiting plate 9 symmetry sets up in roof 11 below, guide bar 10 symmetry sets up in limiting plate 9 top respectively, guide bar 10 top and roof 11 fixed connection, the last adjusting bolt 12 that link up of roof 11, adjusting bolt 12 bottom fixedly connected with clamp plate 13 through setting up adjusting bolt 12 and clamp 13, can carry out the block with two air cleaner between limiting plate 9 through rotating adjusting bolt 12, can make the inner shell 12 and slide down and can be used for the side-sliding filter, and the outer shell 14 is located at the same place, and the top is equipped with high-pressure side of the manual filter, the top is equipped with the top shell 15, the manual filter is equipped with the top shell 15, the top is equipped with the side-down, the top shell 15 is suitable for detecting to be connected with the top shell 14, the top shell 15, the top is big side-down, the top shell 15 is connected with the top shell 14 simultaneously, the top shell 15 is located to the top side-side of the top shell 15 is easy to the top 15, the top shell 15 is well-side and is fixed to the top-side of the top shell 14, and is connected with top-side top shell 14, the air filter is characterized in that a baffle 16 is fixedly connected between the inner walls of the outer shell 14, the baffle 16 is positioned at the rear side of the inner shell 15, exhaust pipes 17 are symmetrically and fixedly connected between the inner walls of the exhaust pipes 17, a second exhaust fan 18 is fixedly connected between the inner walls of the exhaust pipes 17, after two air filters are placed in the positioning mechanism 4, the first exhaust fan 8 is started to blow outside air into the air filters, the second exhaust fan 18 is started to blow air filtered by the air filters into the air collection tank 19, filtered air can be quickly collected and blown into different air collection tanks 19 respectively, the air quality in the different air collection tanks 19 can be detected by using the air quality sensors 20, so that the filtering effect of which air filters is obtained by data comparison is insufficient, the testing efficiency is further improved, the inner ends of the exhaust pipes 17 are all and fixedly connected with the air collection tanks 19, an air quality sensor 20 is fixedly connected to the inner walls of the air collection tanks 19, and an air drain pipe 21 is symmetrically arranged outside the outer shell 14 and is respectively connected with the air collection tanks 19 in a penetrating mode.
Specifically, as shown in fig. 1, the two ends of the air inlet pipe 7 respectively penetrate through the outer side of the vertical plate 6, and the edge of the two ends of the air inlet pipe 7 is uniformly provided with threaded hole grooves 22, the outer part of the air inlet pipe 7 is singly and penetratingly connected with an air guide pipe 23, the inner ends of the air guide pipes 23 are all provided with flanges, the threaded hole grooves 22 are fixedly connected with the flanges at one end of the air guide pipe 23 through connecting bolts, the flanges at one end of the air guide pipe 23 are connected with the threaded hole grooves 22 of the air inlet pipe 7 through the connecting bolts, and the air guide pipe 23 can effectively contact the air blown by the first exhaust fan 8 more intensively with an air filter to be detected, so that the filtering rate of the air filter is effectively improved.
Specifically, as shown in fig. 3, a threaded pipe 24 is disposed through the center of the top side of the top plate 11, and the outer wall of the adjusting bolt 12 is screwed with the inner wall of the threaded pipe 24.
Specifically, as shown in fig. 3-4, the right side limiting plate 9 and the right side of roof 11 are equipped with spliced pole 25 respectively symmetrically, four corners in the inner shell 15 outside are dug respectively and are equipped with connecting hole 26, connecting hole 26 corresponds with spliced pole 25's position, and matches the block fixedly, shell 14 bottom side and operation panel 2 top fixed connection, inner shell 15 outside edge all is equipped with sealing gasket strip 27, between sealing gasket strip 27 and the spliced pole 25 respectively, through setting up spliced pole 25 and connecting hole 26, when carrying out the detection work, can pull out inner shell 15, then cup joint the spliced pole 25 outsides on limiting plate 9, roof 11 with connecting hole 26 in the inner shell 15 outside to can make positioning mechanism 4 and detection case 5 connect, can effectually increase the leakproofness of its connection, avoid the too much condition that leads to the fact the measuring effect inaccurate with the contact of outside air after filtering in the use.
Specifically, as shown in fig. 2, the outer end of the air release pipe 21 is connected with an air release valve 28 through a pipeline, the air release valve 28 is specifically a manual valve, and after the detection is completed, the air release valve 28 can be opened to continuously start the second exhaust fan 18, so that the air in the inner cavity of the air collection tank 19 is discharged.
Specifically, as shown in fig. 6, a single-chip microcomputer is disposed in the inner cavity of the control box 1, a manual switch module and an external display are respectively embedded on the outer wall of the control box 1, the control input ends of the first exhaust fan 8 and the second exhaust fan 18 are respectively connected with the single-chip microcomputer, the signal output end of the single-chip microcomputer is electrically connected with the input end of the external display, the signal input end of the single-chip microcomputer is electrically connected with the air quality sensor 20 and the signal output end of the manual switch module, the manual switch module is started, the single-chip microcomputer respectively starts the first exhaust fan 8 and the second exhaust fan 18, outside air is filtered by an air filter and then is sent into the inner cavity of the air collection tank 19 for storage, the air quality sensor 20 detects the air quality inside different air collection tanks 19, meanwhile, the obtained numerical values are displayed by the external display through the single-chip microcomputer, and recording of workers is facilitated.
When the air filter is used, after two air filters are placed between the limiting plates 9 to be clamped, the adjusting bolts 12 can be rotated to enable the adjusting bolts 12 to drive the pressing plates 13 to descend, the tops of the air filters are pressed and positioned, the inner shell 15 is pulled out, then the connecting holes 26 on the outer sides of the inner shell 15 are sleeved on the outer sides of connecting columns 25 on the limiting plates 9 and the top plate 11, the positioning mechanism 4 is connected with the detection box 5, the manual switch module is started, the single chip microcomputer is started to respectively start the first exhaust fan 8 and the second exhaust fan 18, the first exhaust fan 8 is started to blow outside air into the air filters, the second exhaust fan 18 is started, air filtered by the air filters is blown into the air collection tanks 19 to be stored, the air quality sensor 20 is used for detecting the air quality in different air collection tanks 19, meanwhile, the single chip microcomputer is used for data analysis, and the obtained numerical values are displayed through an external display.
The above is a preferred embodiment of the present invention, and a person skilled in the art can also make alterations and modifications to the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvements, substitutions or modifications made by the person skilled in the art on the basis of the present invention are all within the scope of the present invention.

Claims (8)

1. The utility model provides a general air cleaner test system for ventilation, includes control box (1), its characterized in that, control box (1) top fixedly connected with operation panel (2), operation panel (2) top fixedly connected with air inlet mechanism (3), air inlet mechanism (3) right side is equipped with positioning mechanism (4), positioning mechanism (4) right side fixedly connected with detection case (5), air inlet mechanism (3) include riser (6), air-supply line (7), riser (6) set up respectively in air-supply line (7) both ends, just air-supply line (7) symmetry set up between riser (6), fixedly connected with first air discharge fan (8) between air-supply line (7) inner wall, positioning mechanism (4) are including limiting plate (9), guide bar (10), roof (11), limiting plate (9) symmetry set up in roof (11) below, guide bar (10) symmetry set up respectively in limiting plate (9) top, guide bar (10) top and roof (11) fixed connection, be equipped with on the riser (7) symmetry and set up respectively between riser (6), roof (12) are equipped with on the inner shell (7) inner shell (14) and are connected with clamp plate (13), the inner shell (15) is located inside the outer shell (14), just inner shell (15) outer wall and outer shell (14) inner wall front side sliding connection, fixedly connected with baffle (16) between outer shell (14) inner wall, baffle (16) are located inner shell (15) rear side, the symmetry is link up on baffle (16) and is equipped with exhaust duct (17), fixedly connected with second air discharge fan (18) between exhaust duct (17) inner wall, the equal link up in exhaust duct (17) is connected with gas collection jar (19), fixedly connected with air quality sensor (20) on gas collection jar (19) inner wall, outer side symmetry of outer shell (14) is equipped with gas release pipe (21), gas release pipe (21) link up with gas collection jar (19) respectively.
2. A general ventilation air filter testing system in accordance with claim 1, wherein: the utility model discloses a riser, including riser (6), riser (6) are fixed in the outer list of single link up in air-supply line (7), riser (6) are run through respectively in air-supply line (7) both ends, just equal equidistance in edge in air-supply line (7) both ends is dug and is equipped with screw hole groove (22), outside single link up of air-supply line (7) is connected with guide duct (23), the flange is all installed to the inner of guide duct (23), screw hole groove (22) are fixed with the flange joint of guide duct (23) one end through connecting bolt.
3. A general ventilation air filter testing system in accordance with claim 1, wherein: the bottom side of the limiting plate (9) is fixedly connected with the top of the operating platform (2), through holes are formed in four corners of the pressing plate (13), and the pressing plate (13) is slidably connected with the outer wall of the guide rod (10) through the through holes.
4. A general ventilation air filter testing system in accordance with claim 1, wherein: a threaded pipe (24) is arranged in the center of the top side of the top plate (11) in a penetrating mode, and the outer wall of the adjusting bolt (12) is in threaded connection with the inner wall of the threaded pipe (24).
5. A general ventilation air filter testing system in accordance with claim 1, wherein: the right side limiting plate (9) and roof (11) right side symmetry respectively are equipped with spliced pole (25), four corners in the inner shell (15) outside are dug respectively and are equipped with connecting hole (26), connecting hole (26) correspond with the position of spliced pole (25), and match the block fixedly.
6. A general ventilation air filter testing system in accordance with claim 5, wherein: the bottom side of the outer shell (14) is fixedly connected with the top of the operating platform (2), sealing gasket strips (27) are arranged at the edges of the outer side of the inner shell (15), and the sealing gasket strips (27) are respectively connected with the connecting columns (25).
7. A general ventilation air filter testing system in accordance with claim 1, wherein: the outer end of the air release pipe (21) is connected with an air release valve (28) through a pipeline, and the air release valve (28) is a manual valve.
8. A general ventilation air filter testing system in accordance with claim 1, wherein: the intelligent air conditioner is characterized in that a singlechip is arranged in an inner cavity of the control box (1), a manual switch module and an external display are respectively embedded on the outer wall of the control box (1), control input ends of a first exhaust fan (8) and a second exhaust fan (18) are respectively and electrically connected with the singlechip, a signal output end of the singlechip is electrically connected with an input end of the external display, and a signal input end of the singlechip is electrically connected with an air quality sensor (20) and a signal output end of the manual switch module.
CN202010944402.2A 2020-09-10 2020-09-10 Air filter test system for general ventilation Active CN112033876B (en)

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CN202010944402.2A CN112033876B (en) 2020-09-10 2020-09-10 Air filter test system for general ventilation

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Application Number Priority Date Filing Date Title
CN202010944402.2A CN112033876B (en) 2020-09-10 2020-09-10 Air filter test system for general ventilation

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CN112033876B true CN112033876B (en) 2023-11-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113155700A (en) * 2021-04-16 2021-07-23 深圳市华净科技有限公司 Chemical filter detection device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090022642A (en) * 2007-08-31 2009-03-04 엘지전자 주식회사 Air-conditioning system
CN210874680U (en) * 2019-08-16 2020-06-30 连云港欧亚气体有限公司 Industrial gas drying and dehydrating filter
CN111412008A (en) * 2020-02-29 2020-07-14 王海燕 Ventilation device for underground operation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090022642A (en) * 2007-08-31 2009-03-04 엘지전자 주식회사 Air-conditioning system
CN210874680U (en) * 2019-08-16 2020-06-30 连云港欧亚气体有限公司 Industrial gas drying and dehydrating filter
CN111412008A (en) * 2020-02-29 2020-07-14 王海燕 Ventilation device for underground operation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
新型空气过滤器检测系统;黄保民, 涂光备;暖通空调(第06期);全文 *

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