CN112129678A - Special device for measuring air permeability of dry net of paper machine and using method - Google Patents
Special device for measuring air permeability of dry net of paper machine and using method Download PDFInfo
- Publication number
- CN112129678A CN112129678A CN202010722145.8A CN202010722145A CN112129678A CN 112129678 A CN112129678 A CN 112129678A CN 202010722145 A CN202010722145 A CN 202010722145A CN 112129678 A CN112129678 A CN 112129678A
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- cross bar
- handle
- fan
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a special device for measuring the air permeability of a dry net of a paper machine, which comprises a small centrifugal fan, wherein the small centrifugal fan is connected with one end of a dry net fixing frame through a connecting flange, the other end of the dry net fixing frame is connected with an outlet pipeline, and an outlet pressure gauge is arranged on the outlet pipeline; the invention has simple structure, novel design and low manufacturing cost, and is suitable for mass production.
Description
Technical Field
The invention relates to the technical field of determination of air permeability of a paper machine dry net, in particular to a special device for determining the air permeability of the paper machine dry net and a use method thereof.
Background
The dry net is an indispensable component of the paper machine, the air permeability of the dry net directly influences the service life of the dry net, an air permeability detector is used for measuring the air permeability of the dry net of the paper machine at present, but most enterprises are reluctant to use the method to detect the air permeability of the dry net due to the fact that the air permeability detector is expensive, and in order to solve the problem, the following method is used for replacing the problem of detecting the air permeability of the dry net.
Disclosure of Invention
The invention aims to provide a special device for measuring the air permeability of a paper machine dry net and a using method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a special device for measuring the air permeability of a dry net of a paper machine comprises a small centrifugal fan, wherein the small centrifugal fan is connected with one end of a dry net fixing frame through a connecting flange, the other end of the dry net fixing frame is connected with an outlet pipeline, and an outlet pressure gauge is arranged on the outlet pipeline;
the upper end of the drying net fixing frame is provided with a first cross rod and a second cross rod, the lower end of the fixing frame is provided with a third cross rod and a fourth cross rod, the first cross rod, the second cross rod, the third cross rod and the fourth cross rod are of the same structure, the first cross rod, the second cross rod, the third cross rod and the fourth cross rod are designed in a C shape, a first rotating shaft is arranged in the first cross rod, a second rotating shaft is arranged in the second cross rod, a third rotating shaft is arranged in the third cross rod, and a fourth rotating shaft is arranged in the fourth cross rod;
the rotating shaft I and the rotating shaft III are consistent in structure, the left end and the right end of the rotating shaft I are respectively provided with a handle supporting rod I, the handle supporting rods are connected with the handle I, a groove I is arranged on each handle supporting rod I, the groove I is arranged between the handle I and the rotating shaft, the side edge of the groove I is provided with a sliding groove I, a sliding sheet I is arranged inside the sliding groove I, and a sliding sheet baffle I is arranged on the groove I;
the rotating shaft III and the rotating shaft IV are consistent, the left end and the right end of the rotating shaft III are both provided with handle support rods II, the handle support rods II are connected with the handle II, the handle support rods II are provided with grooves II, the handle II is arranged between the grooves II and the rotating shaft, the side edges of the grooves II are provided with sliding grooves II, sliding sheets II are arranged inside the sliding grooves II, and sliding sheet baffles II are arranged on the grooves II;
the handle I and the handle II are respectively provided with a through hole, the positions of the handle I and the handle II correspond to the positions of the groove I and the groove II, and the positions of the through holes on the handle I and the handle II correspond to the positions of the sliding groove I and the sliding groove II.
Preferably, the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft are all provided with rubber strips.
Preferably, the small centrifugal fan comprises a rack, a fan outlet is formed in the rack, a fan impeller is arranged in the fan outlet and connected with a motor, a sliding baffle is arranged on the fan outlet, and the fan outlet is connected with a connecting flange.
Preferably, the small centrifugal fan is a small centrifugal fan with the model number of 150FLJ 15/17.
Preferably, the using method comprises the following steps:
A. firstly, operating the fan after power is on, at the moment, not placing a dry net in a dry net fixing component, and recording the value on an outlet pressure gauge as P0 after the pressure of the outlet of the fan is stable, so that the power supply can be turned off;
B. then, five groups of to-be-tested dry nets with the area larger than that of the fan outlet are taken for standby, one group of to-be-tested dry nets is firstly taken and fixed in a dry net fixing assembly, then the fan is electrified to operate, and after the pressure of the fan outlet is stable, different outlet pressures are obtained by changing the cross section area of the fan outlet to be used as data sources;
C. then recording the numerical values on the outlet pressure gauge as P1, P2, P3, P4 and P5 respectively, and calculating the average pressure value by adopting an averaging method, wherein the calculation formula is P = (P1+ P2+ P3+ P4+ P5)/5;
D. and then through the formula: and finally, the air permeability A value of the dry net is calculated, and the paper machine can be helped to select a proper dry net by comparing the air permeability A values of different dry nets.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has simple structure, novel design and low manufacturing cost, and is suitable for mass production;
2. the sliding baffle plate is designed at the outlet of the fan, so that different outlet pressures can be obtained as main data sources only by changing the cross section area of the outlet of the fan, and the measurement diversity is greatly improved;
3. the drying net fixing component can effectively fix the drying net and ensure that the drying net is always in a stable state under the action of different pressures, and the special structural connection mode enables the disassembly and the assembly to be more convenient and quicker, and greatly saves time, labor and material resources.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a structure of a fixing frame for a drying net according to the present invention;
FIG. 3 is a schematic view of a first rotary shaft and a third rotary shaft according to the present invention;
FIG. 4 is a schematic structural diagram of a second rotating shaft and a fourth rotating shaft according to the present invention;
fig. 5 is a schematic structural view of a small centrifugal fan according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a special device for measuring the air permeability of a dry net of a paper machine comprises a small centrifugal fan 1, wherein the small centrifugal fan 1 is connected with one end of a dry net fixing frame 3 through a connecting flange 2, the other end of the dry net fixing frame 3 is connected with an outlet pipeline 4, and an outlet pressure gauge 5 is arranged on the outlet pipeline 4;
the upper end of the drying net fixing frame 3 is provided with a first cross bar 3.1 and a second cross bar 3.2, the lower end of the fixing frame 3 is provided with a third cross bar 3.3 and a fourth cross bar 3.4, the first cross bar 3.1, the second cross bar 3.2, the third cross bar 3.3 and the fourth cross bar 3.4 are identical in structure, the first cross bar 3.1, the second cross bar 3.2, the third cross bar 3.3 and the fourth cross bar 3.4 are designed in a C shape, a rotating shaft I3.5 is arranged inside the first cross bar 3.1, a rotating shaft II 3.6 is arranged inside the second cross bar 3.2, a rotating shaft III 3.7 is arranged inside the third cross bar 3.3.3, and a rotating shaft IV 3.8 is arranged inside the fourth cross bar 3.4;
the structure of the first rotating shaft 3.5 is consistent with that of the third rotating shaft 3.7, the left end and the right end of each rotating shaft are provided with a first handle support rod 3.9, the first handle support rod 3.9 is connected with a first handle 3.10, a first groove 3.11 is formed in the first handle support rod 3.9, the first groove 3.11 is arranged between the first handle 3.10 and the rotating shaft, the side edge of the first groove 3.11 is provided with a first sliding groove 3.12, a first sliding vane 3.13 is arranged in the first sliding groove 3.12, and a first sliding vane baffle 3.14 is arranged on the first groove 3.11;
the mechanism of the second rotating shaft 3.6 is consistent with that of the fourth rotating shaft 3.8, the left end and the right end of each of the second rotating shafts are provided with a second handle support rod 3.15, the second handle support rod 3.15 is connected with a second handle 3.16, a second groove 3.17 is formed in the second handle support rod 3.15, the second handle 3.16 is arranged between the second groove 3.17 and the rotating shaft, the side edge of the second groove 3.17 is provided with a second sliding groove 3.18, a second sliding vane 3.19 is arranged in the second sliding groove 3.18, and a second sliding vane baffle 3.20 is arranged on the second groove 3.17;
the sliding vane baffle specially arranged in the invention can prevent the sliding vane from falling from the sliding chute when the sliding vane is pushed;
through holes 3.21 are formed in the first handle 3.10 and the second handle 3.16, the positions of the first handle 3.10 and the second handle 3.16 correspond to the positions of the first groove 3.11 and the second groove 3.17, and the positions of the through holes 3.21 in the first handle 3.10 and the second handle 3.16 correspond to the positions of the first sliding groove 3.12 and the second sliding groove 3.18;
the handles on the rotating shaft are rotated until all the handles are clamped into the corresponding grooves, then the sliding sheet is pushed, penetrates through the through hole in the handle to tightly clamp the handles, and therefore the drying net is more stably fixed on the drying net fixing frame.
In this embodiment, the rubber strips 3.22 are arranged on the first rotating shaft 3.5, the second rotating shaft 3.6, the third rotating shaft 3.7 and the fourth rotating shaft 3.8, and the rubber strips play a role in sealing and stabilizing, and the rotated rubber strips can tightly abut against the dry net, and the dry net can tightly abut against the dry net when the dry net is thin or thick due to the fact that the rubber strips are made of a reversibly deformable high-elasticity polymer material, and vibration of the dry net can be reduced.
In this embodiment, small-size centrifugal fan 1 includes frame 1.1, be equipped with fan export 1.2 on the frame 1.1, fan export 1.2 is inside to be equipped with fan wheel 1.3, fan wheel 1.3 is connecting motor 1.4, be equipped with slide damper 1.5 on the fan export 1.2, through adopting the change fan export cross sectional area, obtain different outlet pressure as the main data source, flange 2 is being connected to fan export 1.2.
In this embodiment, the small centrifugal fan 1 is a small centrifugal fan with a model number of 150FLJ 15/17.
The working principle is as follows: the using method of the invention comprises the following steps:
A. firstly, operating the fan after power is on, at the moment, not placing a dry net in a dry net fixing component, and recording the value on an outlet pressure gauge as P0 after the pressure of the outlet of the fan is stable, so that the power supply can be turned off;
B. then, five groups of to-be-tested dry nets with the area larger than that of the fan outlet are taken for standby, one group of to-be-tested dry nets is firstly taken and fixed in a dry net fixing assembly, then the fan is electrified to operate, and after the pressure of the fan outlet is stable, different outlet pressures are obtained by changing the cross section area of the fan outlet to be used as data sources;
C. then recording the numerical values on the outlet pressure gauge as P1, P2, P3, P4 and P5 respectively, and calculating the average pressure value by adopting an averaging method, wherein the calculation formula is P = (P1+ P2+ P3+ P4+ P5)/5;
D. and then through the formula: and finally, the air permeability A value of the dry net is calculated, and the paper machine can be helped to select a proper dry net by comparing the air permeability A values of different dry nets.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A special device for measuring the air permeability of a dry net of a paper machine comprises a small centrifugal fan 1, wherein the small centrifugal fan 1 is connected with one end of a dry net fixing frame 3 through a connecting flange 2, the other end of the dry net fixing frame 3 is connected with an outlet pipeline 4, and an outlet pressure gauge 5 is arranged on the outlet pipeline 4;
the upper end of the drying net fixing frame 3 is provided with a first cross bar 3.1 and a second cross bar 3.2, the lower end of the fixing frame 3 is provided with a third cross bar 3.3 and a fourth cross bar 3.4, the first cross bar 3.1, the second cross bar 3.2, the third cross bar 3.3 and the fourth cross bar 3.4 are identical in structure, the first cross bar 3.1, the second cross bar 3.2, the third cross bar 3.3 and the fourth cross bar 3.4 are designed in a C shape, a rotating shaft I3.5 is arranged inside the first cross bar 3.1, a rotating shaft II 3.6 is arranged inside the second cross bar 3.2, a rotating shaft III 3.7 is arranged inside the third cross bar 3.3.3, and a rotating shaft IV 3.8 is arranged inside the fourth cross bar 3.4;
the structure of the first rotating shaft 3.5 is consistent with that of the third rotating shaft 3.7, the left end and the right end of each rotating shaft are provided with a first handle support rod 3.9, the first handle support rod 3.9 is connected with a first handle 3.10, a first groove 3.11 is formed in the first handle support rod 3.9, the first groove 3.11 is arranged between the first handle 3.10 and the rotating shaft, the side edge of the first groove 3.11 is provided with a first sliding groove 3.12, a first sliding vane 3.13 is arranged in the first sliding groove 3.12, and a first sliding vane baffle 3.14 is arranged on the first groove 3.11;
the mechanism of the second rotating shaft 3.6 is consistent with that of the fourth rotating shaft 3.8, the left end and the right end of each of the second rotating shafts are provided with a second handle support rod 3.15, the second handle support rod 3.15 is connected with a second handle 3.16, a second groove 3.17 is formed in the second handle support rod 3.15, the second handle 3.16 is arranged between the second groove 3.17 and the rotating shaft, the side edge of the second groove 3.17 is provided with a second sliding groove 3.18, a second sliding vane 3.19 is arranged in the second sliding groove 3.18, and a second sliding vane baffle 3.20 is arranged on the second groove 3.17;
through holes 3.21 are formed in the first handle 3.10 and the second handle 3.16, the positions of the first handle 3.10 and the second handle 3.16 correspond to the positions of the first groove 3.11 and the second groove 3.17, and the positions of the through holes 3.21 in the first handle 3.10 and the second handle 3.16 correspond to the positions of the first sliding groove 3.12 and the second sliding groove 3.18.
2. The special device for measuring the air permeability of the dry net of the paper machine according to claim 1, characterized in that: and rubber strips 3.22 are arranged on the first rotating shaft 3.5, the second rotating shaft 3.6, the third rotating shaft 3.7 and the fourth rotating shaft 3.8.
3. The special device for measuring the air permeability of the dry net of the paper machine according to claim 1, characterized in that: the small centrifugal fan 1 comprises a frame 1.1, a fan outlet 1.2 is formed in the frame 1.1, a fan impeller 1.3 is arranged in the fan outlet 1.2, the fan impeller 1.3 is connected with a motor 1.4, a sliding baffle 1.5 is arranged on the fan outlet 1.2, and a connecting flange 2 is connected with the fan outlet 1.2.
4. The special device for measuring the air permeability of the dry net of the paper machine according to claim 1, characterized in that: the small centrifugal fan 1 is a small centrifugal fan with the model number of 150FLJ 15/17.
5. The use method of the special device for measuring the air permeability of the dry net of the paper machine, which is disclosed by claim 1, is characterized in that: the using method comprises the following steps:
A. firstly, operating the fan after power is on, at the moment, not placing a dry net in a dry net fixing component, and recording the value on an outlet pressure gauge as P0 after the pressure of the outlet of the fan is stable, so that the power supply can be turned off;
B. then, five groups of to-be-tested dry nets with the area larger than that of the fan outlet are taken for standby, one group of to-be-tested dry nets is firstly taken and fixed in a dry net fixing assembly, then the fan is electrified to operate, and after the pressure of the fan outlet is stable, different outlet pressures are obtained by changing the cross section area of the fan outlet to be used as data sources;
C. then recording the numerical values on the outlet pressure gauge as P1, P2, P3, P4 and P5 respectively, and calculating the average pressure value by adopting an averaging method, wherein the calculation formula is P = (P1+ P2+ P3+ P4+ P5)/5;
D. and then through the formula: and finally, the air permeability A value of the dry net is calculated, and the paper machine can be helped to select a proper dry net by comparing the air permeability A values of different dry nets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010722145.8A CN112129678B (en) | 2020-09-11 | 2020-09-11 | Special device for measuring air permeability of paper machine dry net and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010722145.8A CN112129678B (en) | 2020-09-11 | 2020-09-11 | Special device for measuring air permeability of paper machine dry net and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112129678A true CN112129678A (en) | 2020-12-25 |
| CN112129678B CN112129678B (en) | 2023-07-28 |
Family
ID=73850573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010722145.8A Active CN112129678B (en) | 2020-09-11 | 2020-09-11 | Special device for measuring air permeability of paper machine dry net and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112129678B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200397924Y1 (en) * | 2005-07-20 | 2005-10-10 | 이일우 | Printing plate for screen process printing |
| CN103115858A (en) * | 2013-01-24 | 2013-05-22 | 电子科技大学 | Measuring device and measuring method for measuring gas permeability of material |
| CN108015697A (en) * | 2017-12-26 | 2018-05-11 | 重庆市中光电显示技术有限公司 | The frock clamp of board-like material |
| WO2018121038A1 (en) * | 2016-12-29 | 2018-07-05 | 广州傲胜人造草股份有限公司 | Moveable soccer gate |
| CN208961851U (en) * | 2018-10-16 | 2019-06-11 | 苏州大用金属科技有限公司 | A kind of aluminum alloy frame positioning fixture |
| CN110258166A (en) * | 2019-07-16 | 2019-09-20 | 山鹰国际控股股份公司 | A kind of dry net deviation detecting device |
| CN209624313U (en) * | 2019-03-19 | 2019-11-12 | 莱州市电子仪器有限公司 | Permeability analyzer suitable for micro- gas permeable material |
| CN211053623U (en) * | 2019-12-03 | 2020-07-21 | 苏州锦和鑫塑胶有限公司 | Screen window frame positioning device |
| CN211189424U (en) * | 2019-09-19 | 2020-08-07 | 江苏通瑜空调设备有限公司 | Filter bag fixing device of bag filter |
-
2020
- 2020-09-11 CN CN202010722145.8A patent/CN112129678B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200397924Y1 (en) * | 2005-07-20 | 2005-10-10 | 이일우 | Printing plate for screen process printing |
| CN103115858A (en) * | 2013-01-24 | 2013-05-22 | 电子科技大学 | Measuring device and measuring method for measuring gas permeability of material |
| WO2018121038A1 (en) * | 2016-12-29 | 2018-07-05 | 广州傲胜人造草股份有限公司 | Moveable soccer gate |
| CN108015697A (en) * | 2017-12-26 | 2018-05-11 | 重庆市中光电显示技术有限公司 | The frock clamp of board-like material |
| CN208961851U (en) * | 2018-10-16 | 2019-06-11 | 苏州大用金属科技有限公司 | A kind of aluminum alloy frame positioning fixture |
| CN209624313U (en) * | 2019-03-19 | 2019-11-12 | 莱州市电子仪器有限公司 | Permeability analyzer suitable for micro- gas permeable material |
| CN110258166A (en) * | 2019-07-16 | 2019-09-20 | 山鹰国际控股股份公司 | A kind of dry net deviation detecting device |
| CN211189424U (en) * | 2019-09-19 | 2020-08-07 | 江苏通瑜空调设备有限公司 | Filter bag fixing device of bag filter |
| CN211053623U (en) * | 2019-12-03 | 2020-07-21 | 苏州锦和鑫塑胶有限公司 | Screen window frame positioning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112129678B (en) | 2023-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205941030U (en) | Vibration state simulation experiment device | |
| CN112129678A (en) | Special device for measuring air permeability of dry net of paper machine and using method | |
| CN208124734U (en) | Automatic drier is used in a kind of manufacture of automobile leaf spring | |
| CN204314020U (en) | A kind of high efficiency electric motor end cap air-tightness detection device | |
| CN207751913U (en) | A kind of device for testing performance of heat protective material | |
| CN104481903B (en) | Axial flow blower overall dynamic-balance test auxiliary mould | |
| CN203965603U (en) | Electrical machinery life pick-up unit | |
| CN208394444U (en) | A kind of battery diaphragm wrap-up with fixed structure | |
| CN217796237U (en) | High-frequency vibration test bed for multi-azimuth test | |
| CN209802227U (en) | radial circular jump degree detection device for cross-flow fan blade | |
| CN201258873Y (en) | Impeller | |
| CN209228592U (en) | Compressor test rack | |
| CN214224182U (en) | Rotary type hygrothermograph verification box | |
| CN204718736U (en) | A kind of dynamic balance measuring instrument with glitch detection function | |
| CN218469764U (en) | Performance evaluation test instrument | |
| CN208278932U (en) | For the Shang Ding mechanism in floor suction head detection line | |
| CN204064554U (en) | A kind of gas leak pick-up unit | |
| CN220771820U (en) | Storage rack for water meter detection | |
| CN215065683U (en) | Drying device for soil detection sample | |
| CN113063456A (en) | Rotary type verification box for verifying hygrothermograph | |
| CN105424974A (en) | Air conditioner pipeline flow velocity monitor | |
| CN218837453U (en) | Product positioning device applied to detection equipment | |
| CN217931585U (en) | Chemical industry harmful gas detection device | |
| CN204556625U (en) | A kind of test shelf for Leaching tests | |
| CN217996081U (en) | Cigarette conveying device for smoking machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |