CN101887004B - Device and method for testing water permeability of planar filter medium - Google Patents
Device and method for testing water permeability of planar filter medium Download PDFInfo
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- CN101887004B CN101887004B CN201010200423XA CN201010200423A CN101887004B CN 101887004 B CN101887004 B CN 101887004B CN 201010200423X A CN201010200423X A CN 201010200423XA CN 201010200423 A CN201010200423 A CN 201010200423A CN 101887004 B CN101887004 B CN 101887004B
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Abstract
The invention discloses a device and a method for testing the water permeability of a planar filter medium for liquid and solid separation. The device mainly comprises a support baseplate, a baseplate support leg, a support pole, a water outlet, a lower connecting flange, a sealing ring, a supporting screen, a filtering element mounting plate, a fastening clamp, an upper connecting flange, a barrel, a water inlet, a water inlet sealing socket, an exhausting and pressurizing port, an incoming water distribution plate, an overflow port positioning rod, an overflow water outlet ring, an overflow outlet pipe, an overflow port sealing socket, an overflow adjusting pipe, an overflow port elbow, a liquid level meter and the like. Due to the adoption of the test device and the method of the invention, the water permeability of the planar filter medium can be tested correctly and rapidly under a vacuum or pressurized condition and basis for scientific evaluation, selection and use of the filter medium is provided.
Description
Technical field
The present invention relates to the apparatus and method of test filtering medium property in a kind of liquid-solid separation technology field, specifically, relate to a kind of proving installation and method of testing of water permeability of planar filter medium.
Background technology
In the liquid-solid detachment process, filter medium is the core component in the unit operations, and the quality of its performance will directly have influence on the quality of separating effect.The performance index of filter medium are more; Wherein water permeability is important performance index selecting and use filter medium; Adopt permeation rate and permeable resistance to weigh; Permeation rate is a pure water amount of the unit interval vertically passing through the unit area filter medium, and permeable resistance is that pure water is vertically through the suffered resistance of unit area filter medium.
The water permeability of filter medium can directly reflect the size of filter media speed in the liquid-solid detachment process, can also predict the regenerability of this filter medium and to the conformability of material etc. according to the situation of change of filter medium regeneration back water permeability.
The filter medium water permeability method of testing of continuing to use at present; Or at normal pressure or under vacuum or pressurized conditions; On flat-panel filter, measure the water permeability of filter medium, have problems such as accuracy and specific aim difference, still do not have special-purpose proving installation and unified method of testing; For this reason, research is a kind of effectively, liquid-solid separation accurately is necessary with the determinator and the method for filter medium water permeability.
Summary of the invention
There are problems such as accuracy and specific aim difference in filter medium water permeability method of testing to continuing to use at present; The present invention aims to provide a kind of proving installation and method that accurately, fast, effectively can be used for testing liquid-solid separate plane formula filter medium water permeability; These apparatus and method both can be under the normal pressure situation; Can under vacuum or pressurized conditions, test again, for scientifically estimating and selecting for use filter medium that foundation is provided.
Water permeability of planar filter medium proving installation of the present invention, the parts of said device comprise: base-plate, base plate leg, joint bolt, seat bar, water delivering orifice, lower link flange, O RunddichtringO, filtering element installing plate, support web plate, cylindrical shell gasket seal, last connecting flange, cylindrical shell, water inlet, exhaust pressurization mouth, inlet distribution plate, overflow vent backstay, overflow go out water ring, overflow outlet, overflow adjustable pipe, overflow vent elbow, liquid level gauge; In addition, also comprise fastening clip that the lower link flange is connected with last connection secure, be used to replace the water inlet pressure terminal of water inlet and be used to replace the overflow vent pressure terminal of overflow outlet.
Described base-plate, base plate leg, joint bolt, seat bar, water delivering orifice, lower link flange, filtering element installing plate, support web plate, upward connecting flange, cylindrical shell, exhaust pressurization mouth, the manufacturing of inlet distribution plate employing stainless steel material, the diameter of its middle cylinder body is selected and is about 80mm; O RunddichtringO and cylindrical shell gasket seal adopt the manufacturing of silicon rubber material; Overflow vent backstay, overflow go out water ring and adopt the ultra high molecular polyethylene made; Water inlet, water inlet pressure terminal, overflow outlet, overflow vent pressure terminal, overflow adjustable pipe adopt the polypropylene material manufacturing; Change the height of overflow outlet through the length of changing the overflow adjustable pipe; So as to the liquid level in the control cylindrical shell, adjustable liquid level is respectively 50mm, 100mm, 150mm, 200mm, 250mm.Liquid level is made in the cylindrical shell of the also visual testing experiment of the length of overflow adjustable pipe institute specific requirement.The lower link flange is provided with installs concave surface that supports web plate and the groove of placing the O RunddichtringO.
Flow out swimmingly in order to ensure the infiltration fluid power, the diameter of described water delivering orifice is 10～30mm.Described lower link flange and last connecting flange adopt the fastening clip of fast-open type to be fastenedly connected, and lower link flange society has has installed concave surface that supports web plate and the groove of having placed the O RunddichtringO.
The fastening clip of described fast-open type is a kind of coupling assembling; Be applicable to the pressure pipeline of minor diameter and being connected and sealing of pressure vessel; Constitutive requirements comprise: open the clip I soon and open the clip II soon, clip rotating pin and the ring nut, loose joint bolt and the loose joint bolt bearing pin that are used for fastening clip.To open the clip I during use soon and open the clip II soon and open, be enclosed within then on the flange periphery that has constant slope, buckle the loose joint bolt again, tighten ring nut at last.Under the acting force of loose joint bolt, to open the clip I soon and open the clip II soon and tighten up gradually, bolt load converts axial load into through the cone angle of opening clip and flange soon, makes flange gasket compress, and plays sealing function.
Described O RunddichtringO, filtering element installing plate, support web plate and the filter medium that will test and cylindrical shell gasket seal are installed between lower link flange and the last connecting flange.
Described water inlet adopts and opens the plug form soon, also available water inlet pressure terminal replacement when vacuum or pressurized operation.The diameter of water inlet is preferably 10～30mm, and to guarantee that into water is smooth and easy, the water inlet pressure terminal is answered good seal under vacuum or pressurized conditions.
The described plug main member of opening soon comprises: the button collar of adapter body, O RunddichtringO, elastic bayonet lock and elastic bayonet lock; Insert pipe with the elastic bayonet lock button collar during use; Direct reach the adapter body root after making pipe through elastic bayonet lock and O-ring seal; Play sealing function, only with hand is vertically pressed the elastic bayonet lock button collar and can be extracted pipe during dismounting.
Described inlet distribution plate can adopt perforated plate construction, its objective is to make the experimental liquid that gets in the cylindrical shell evenly distribute.Other liquid distribution element that can reach this purpose also is applicable to device of the present invention.
Described overflow adjustable pipe adopts the plug form of opening soon same as described above; Be inserted on the described overflow vent elbow; And be provided with the different overflow adjustable pipe of length; Change the height that overflow exports through the length of changing the overflow adjustable pipe, so as to the liquid level in the control cylindrical shell, adjustable liquid level is respectively 50mm, 100mm, 150mm, 200mm, 250mm.
The plug form of opening soon same as described above is also adopted in described overflow outlet, also available overflow vent pressure terminal replacement when vacuum or pressurized operation.The overflow outlet diameter is preferably 10～30mm, and smooth and easy to guarantee overflow, the overflow vent pressure terminal is answered good seal under vacuum or pressurized conditions.
The highest liquid level of described liquid level gauge position should be higher than the position of the highest overflow outlet.
The experimental liquid that adopts in the test process is generally distilled water.
When using filter medium water permeability proving installation of the present invention to test water permeability, said method comprising the steps of:
(1) chooses the filter medium sample of defectives such as indefectible, breakage before the test; Being cut into diameter is 5 of 100mm circular specimens; For the filter medium sample of weaving form, for avoiding running, the edge need be heat-treated; Getting filter medium sample is dipped in the distilled water, to sample because of sinking to getting final product from gravity;
(2) with the O RunddichtringO with support web plate and pack in the groove and concave surface of lower link flange; The mounting filtering detail assembly panel; Lie against the filter medium sample for preparing the filtering element installing plate and support on the web plate again, press the cylindrical shell gasket seal, will go up again above connecting flange and cylindrical shell be pressed in gently; Must not make in the attention process that sample squints to some extent, fold; With fastening clip lower link flange and last connecting flange are fastenedly connected at last, require to guarantee sealing, water permeable area is 50cm in the test process
2
(3) for the less filter medium of permeable resistance; Can under normal pressure, measure the water permeability of filter medium, make experimental liquid get into cylindrical shell, through the liquid level of liquid level gauge inspection section in vivo studies liquid through water inlet pipe; Change the overflow adjustable pipe of different length; Change the liquid level of experimental liquid in the cylindrical shell, make experimental liquid under action of pressure, pass through test sample, the liquid level of record experimental liquid; Should follow certain principle in the test process, should make experimental liquid that certain flow velocity is arranged, can not make the flow velocity of experimental liquid too fast again through filter medium; That is to say that the flow rates that sees through the experimental liquid of filter medium sample should be controlled in 1mm/s～50mm/s scope, for the slower sample of infiltration rate; The amount of permeate of accumulative total is less in 30 seconds, can according to circumstances suitably prolong permeability time, and permeability time prolongs 2min～5min; Can reduce the influence of turbulent flow so on the one hand to measuring; Also be convenient to the metering of permeability time and permeable amount on the other hand, treat system stability after, take by weighing the quality of penetrating fluid in about 30 seconds; Each sample carries out five tests, averages;
(4) vacuum or pressurized conditions are measured the water permeability of filter medium down, are used for the bigger sample of permeable resistance more, because the expulsive force in the process is bigger, the pressure reduction that the liquid of specimen surface produces can be ignored; During test experimental liquid is got into cylindrical shell through water inlet pipe, keep a certain amount of experimental liquid on the test sample, generally get 500mL; The amount of concrete experimental liquid is determined on a case-by-case basis; Replace the overflow outlet with the overflow vent pressure terminal and seal, seal, connect vacuum system through water delivering orifice then and carry out vacuum filtration or connect a compression system carrying out pressure filtration through exhaust pressurization mouth with water inlet pressure terminal replacement water inlet; Penetrating fluid in the collection process; Recording process pressure and required permeability time, each sample are carried out five tests, average;
(5) test liquid temp, test pressure (liquid level, vacuum tightness or pressure), water permeable area, permeable amount and permeability time in the record mensuration process; Calculate the permeation rate and the permeable resistance of each filter medium test by following formula; Get repeatedly the average result of measured value again
Permeation rate:
In the formula, Q
iThe permeability rate of-sample under certain pressure reduction, m
3/ m
2.s;
W
iThe permeable amount of-sample under certain pressure reduction, kg;
The used time of permeable amount that the t-sample obtains under certain pressure reduction, s;
The water permeable area of A-sample, m
2
The density of experimental liquid under ρ-test temperature, kg/m
3
Permeable resistance:
In the formula, R
i-permeable resistance, m
-1
Δ P-sample both sides pressure reduction, Pa;
The viscosity of experimental liquid under μ-test temperature, Pas.
Major advantage of the present invention is:
1, uses filter medium water permeability proving installation of the present invention and method; Under both can normal pressure; Can under vacuum or pressurized conditions, measure the water permeability of most of filter mediums again, convenient and swift, for scientifically estimating and selecting for use filter medium that reliable basis is provided.
2, device of the present invention adopts the quick-opening structure of clamp connection, makes that the installation process of filter medium sample is convenient and swift.
3, be provided with the support web plate below the filter medium sample to be measured; Sample is played a supporting role; Both prevented filter medium distortion, the case in openings that has reduced back up pad again influence permeation rate, having reduced because of the influence to test result of sample deformation and back up pad case in openings of very big degree.
Description of drawings
Fig. 1 is the structural representation of filter medium water permeability proving installation according to the invention;
Fig. 2 is the A point partial enlarged drawing of filter medium water permeability proving installation shown in Figure 1;
Fig. 3 is the diagrammatic cross-section during the fastening clip of fast-open type uses;
Fig. 4 is the plan structure synoptic diagram of the fastening clip of fast-open type;
Fig. 5 is for open plug sectional structure synoptic diagram soon.
Label is among the figure:
The 1-base-plate; 2-base plate leg; The 3-joint bolt; The 4-seat bar; The 5-water delivering orifice; 6-lower link flange; The 7-O RunddichtringO; 8-filtering element installing plate; 9-supports web plate; 10-filter medium sample; 11-cylindrical shell gasket seal; The fastening clip of 12-; The last connecting flange of 13-; The 14-cylindrical shell; The 15-water inlet; 15 '-the water inlet pressure terminal; 16-exhaust pressurization mouth; 17-inlet distribution plate; 18-overflow vent backstay; The 19-overflow goes out water ring; 20-overflow outlet; 20 '-the overflow vent pressure terminal; 21-overflow adjustable pipe; 22-overflow vent elbow; The 23-liquid level gauge; 24-flange seal equalizing bed; 25-opens the clip I soon; 26-connecting tube I; 27-opens the clip II soon; 28-connecting tube II; The 29-ring nut; 30-loose joint bolt; 31-loose joint bolt bearing pin; 32-clip active pin shaft; The 33-button collar; The 34-elastic bayonet lock; 35-O shape O-ring seal; The 36-joint body.
Embodiment
Enumerate embodiment below the present invention is further specified, but the present invention is in no way limited to this embodiment.
Embodiment
Referring to accompanying drawing 1,2,3,4 and 5, Fig. 1 is the structural representation of described filter medium water permeability proving installation; Fig. 2 is the A point partial enlarged drawing of filter medium water permeability proving installation shown in Figure 1; Fig. 3 is the diagrammatic cross-section during the fastening clip of fast-open type uses; Fig. 4 is the plan structure synoptic diagram of the fastening clip of fast-open type; Fig. 5 is for open plug sectional structure synoptic diagram soon.
As shown in Figure 1; A kind of liquid-solid separation is with filter medium water permeability proving installation, and its component parts comprises: base-plate 1, base plate leg 2, joint bolt 3, seat bar 4, water delivering orifice 5, lower link flange 6, O RunddichtringO 7, filtering element installing plate 8, support web plate 9, cylindrical shell gasket seal 11, go up connecting flange 13, cylindrical shell 14, water inlet 15, exhaust pressurization mouthfuls 16, inlet distribution plate 17, overflow vent backstay 18, overflow go out water ring 19, overflow outlet 20, overflow adjustable pipe 21, overflow vent elbow 22, liquid level gauge 23; In addition, the water inlet pressure terminal 15 that also comprise fastening clip 12 that lower link flange 6 and last connecting flange 13 are fastenedly connected, is used to replace water inlet 15 ' and be used to replace the overflow vent pressure terminal 20 of overflow outlet 20 '.
Described base-plate 1, base plate leg 2, joint bolt 3, seat bar 4, water delivering orifice 5, lower link flange 6, filtering element installing plate 8, support web plate 9, go up connecting flange 13, cylindrical shell 14, exhaust pressurization mouthfuls 16, inlet distribution plate 17 adopt the stainless steel material manufacturings, the selected 80mm that is about of the diameter of its middle cylinder body 14.O RunddichtringO 7 adopts the manufacturing of silicon rubber material with cylindrical shell gasket seal 11.Overflow vent backstay 18, overflow go out water ring 19 and adopt the ultra high molecular polyethylene made.Water inlet 15, water inlet pressure terminal 15 ', overflow outlet 20, overflow vent pressure terminal 20 ', overflow adjustable pipe 21 adopts the polypropylene material manufacturings.Flow out swimmingly in order to ensure the infiltration fluid power, the diameter of described water delivering orifice 5 is 15mm.Lower link flange 6 adopts the fastening clip 12 of fast-open type to be fastenedly connected with last connecting flange 13, and lower link flange 6 is provided with has installed concave surface that supports web plate 9 and the groove of placing O RunddichtringO 7.The fastening clip 12 of described fast-open type is a kind of coupling assembling; Be applicable to the pressure pipeline of minor diameter and being connected and sealing of pressure vessel; Constitutive requirements comprise shown in Fig. 3 and 4: ring nut 29, loose joint bolt 30 and the loose joint bolt bearing pin 31 opening clip I 25 soon and open clip II 27, clip rotating pin 32 soon and be used for fastening clip; To open the clip I during use soon and open the clip II soon and open; Be enclosed within then on the flange periphery that has constant slope, buckle the loose joint bolt again, tighten ring nut at last.Under the acting force of loose joint bolt, to open the clip I soon and open the clip II soon and tighten up gradually, bolt load converts axial load into through the cone angle of opening clip and flange soon, makes flange gasket compress, and plays sealing function.O RunddichtringO 7, filtering element installing plate 8, support web plate 9 and the filter medium that will test and cylindrical shell gasket seal 11 are installed between lower link flange 6 and the last connecting flange 13.Water inlet 15 adopts opens the plug form, also available water inlet pressure terminal 15 ' replacement when vacuum or pressurized operation soon; The diameter of water inlet 15 is preferably 15mm, to guarantee that into water is smooth and easy, water inlet pressure terminal 15 ' under vacuum or pressurized conditions, answer good seal.It is described that to open plug soon as shown in Figure 5; Main member comprises: the button cover 33 of adapter body 36, O RunddichtringO 35, elastic bayonet lock 34 and elastic bayonet lock; Insert pipe with the elastic bayonet lock button collar during use; Direct reach the adapter body root after making pipe through elastic bayonet lock and O-ring seal, play sealing function, only with hand is vertically pressed the elastic bayonet lock button collar and can be extracted pipe during dismounting.
Described inlet distribution plate 17 is a perforated plate construction, makes the distilled water that gets in the cylindrical shell be evenly distributed stable.Overflow adjustable pipe 21 adopt with above the said identical plug form of opening soon; Be inserted on the described overflow vent elbow 22; And be provided with the different overflow adjustable pipe 21 of length; Change overflow through the overflow adjustable pipe of changing different length and export 20 height, so as to the liquid level in the control cylindrical shell 14, adjustable height is for being respectively 50mm, 100mm, 150mm, 200mm, 250mm.Overflow outlet 20 also adopt with above the said identical plug form of opening soon, also available overflow vent pressure terminal 20 ' replacement when vacuum or pressurized operation.Overflow exports 20 diameters and is preferably 10～30mm, and is smooth and easy to guarantee overflow, overflow vent pressure terminal 20 ' under vacuum or pressurized conditions, answer good seal.Liquid level gauge 23 the highest liquid level positions should be higher than the position of the highest overflow outlet 20.The experimental liquid that adopts in the test process is a distilled water.
When adopting device of the present invention to test, concrete grammar is following:
(1) chooses the filter medium sample of defectives such as indefectible, breakage before the test; The cutting diameter is 5 of 100mm circular specimens; Filter medium sample for weaving form; For avoiding the running edge to heat-treat, getting filter medium sample is dipped in the distilled water, to sample because of sinking to getting final product from gravity.
(2) with O RunddichtringO 7 with support web plate 9 and pack in the groove and concave surface of lower link flange 6; Mounting filtering detail assembly panel 8; Lie against the filter medium sample 10 for preparing filter detail assembly panel 8 and support on the web plate 9 again, press cylindrical shell gasket seal 11, will go up again above connecting flange 13 is pressed in cylindrical shell 14 gently; Must not make in the attention process that sample squints to some extent, fold; With fastening clip 12 lower link flange 6 and last connecting flange 13 are fastenedly connected at last, require to guarantee sealing, water permeable area is 50cm in the test process
2
(3) for the less filter medium of permeable resistance; Can under normal pressure, measure the water permeability of filter medium, make experimental liquid get into cylindrical shell 14, through the liquid level of experimental liquids in the liquid level gauge 23 observation cylindrical shells 14 through water inlet pipe 15; Through changing the overflow adjustable pipe 21 of different length; Change the liquid level of experimental liquid in the cylindrical shell 14, make experimental liquid under action of pressure, pass through test sample, the liquid level of record experimental liquid.Should follow certain principle in the test process; Should make experimental liquid that certain flow velocity is arranged through filter medium sample 10; Can not make the flow velocity of experimental liquid too fast again, can reduce the influence of turbulent flow so on the one hand, also be convenient to the metering of permeability time and permeable amount on the other hand measuring.After treating system stability, take by weighing the quality of penetrating fluid in about 30 seconds, each sample carries out five tests, averages.For the slower sample of infiltration rate, if the amount of permeate of accumulative total is less in 30 seconds, error is bigger, can be according to circumstances, and the suitable prolongation cumulative time.
(4) vacuum or pressurized conditions are measured the water permeability of filter medium down, are used for the bigger sample of permeable resistance more, because the expulsive force in the process is bigger, the pressure reduction that the liquid of specimen surface produces can be ignored.During test experimental liquid is got into cylindrical shell 14 through water inlet pipe 15; Keep a certain amount of experimental liquid on the test sample (generally get 500mL, the amount of concrete experimental liquid is determined on a case-by-case basis), seal with overflow vent pressure terminal 20 ' replacement overflow outlet 20; Seal with water inlet pressure terminal 15 ' replacement water inlet 15; Connecting vacuum system through water delivering orifice 5 then carries out vacuum filtration or carries out pressure filtration, the penetrating fluid in the collection process, recording process pressure and required permeability time through exhaust pressurization mouthful 16 connection compression systems; Each sample carries out five tests, averages.
(5) test liquid temp, test pressure (liquid level, vacuum tightness and pressure), water permeable area, permeable amount and permeability time in the record mensuration process; Calculate the permeation rate and the permeable resistance of each filter medium test by following formula, get repeatedly the average result of measured value again.
Permeation rate:
In the formula, Q
iThe permeability rate of-sample under certain pressure reduction, m
3/ m
2.s;
W
iThe permeable amount of-sample under certain pressure reduction, kg;
The used time of permeable amount that the t-sample obtains under certain pressure reduction, s;
The water permeable area of A-sample, m
2
The density of experimental liquid under ρ-test temperature, kg/m
3
Permeable resistance:
In the formula, R
i-permeable resistance, m
-1
Δ P-sample both sides pressure reduction, Pa;
The viscosity of experimental liquid under μ-test temperature, Pas.
Use proving installation of the present invention and method; Can carry out test and evaluation with the water permeability of flat filter medium to liquid-solid detachment process than science; For liquid-solid separation with filter medium select for use, design, process and work such as research and development provides effective reference frame; And then can improve and optimize the isolated by filtration process, filter medium can be applied in the actual production more efficiently.
Institute's column data adopts device of the present invention and method of testing to carry out the test figure that obtains after the test of filter medium water permeability for the inventor selects the typical filter medium for use in the table 1.Test temperature is 20 ℃.
Table 1 typical filter medium water permeability
| Subject | Sample 1 | |
|
Sample 4 | |
| Filter medium | Polypropylene fibre 750B | Terylene 621 | Nylon 301 | Duck | Nylon canvas |
| Permeable amount W i×10 3 (kg) | 4030.85 | 302.46 | 330.91 | 42.69 | 39.37 |
| Permeability time t (s) | 30 | 30 | 30 | 30 | 30 |
| Sample water permeable area A (m 2) | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 |
| Experimental liquid density p (kg/m 3) | 998.23 | 998.23 | 998.23 | 998.23 | 998.23 |
| Sample both sides pressure differential deltap P (Pa) | 2000 | 2500 | 1000 | 2500 | 2500 |
| Experimental liquid viscosity μ * 10 3 (Pa·s) | 1.002 | 1.002 | 1.002 | 1.002 | 1.002 |
| Permeation rate Q i×10 5 (m 3/m 2·s) | 2692.00 | 202.00 | 221.00 | 28.51 | 26.29 |
| Permeable resistance R i×10 8 (m -1) | 0.74 | 12.35 | 4.52 | 87.51 | 94.90 |
Claims (5)
1. water permeability of planar filter medium proving installation; It is characterized in that the parts of said device comprise: base-plate [1], base plate leg [2], joint bolt [3], seat bar [4], water delivering orifice [5], lower link flange [6], O RunddichtringO [7], filtering element installing plate [8], support web plate [9], cylindrical shell gasket seal [11], go up connecting flange [13], cylindrical shell [14], water inlet [15], exhaust pressurization mouthful [16], an inlet distribution plate [17], overflow vent backstay [18], overflow go out water ring [19], overflow outlet [20], overflow adjustable pipe [21], overflow vent elbow [22], liquid level gauge [23]; In addition, also comprise the fastening clip [12] that lower link flange [6] and last connecting flange [13] are fastenedly connected, be used to replace the water inlet pressure terminal [15] of water inlet [15] and be used to replace the overflow vent pressure terminal [20 '] of overflow outlet [20]; Described lower link flange [6] and last connecting flange [13] adopt the fastening clip [12] of fast-open type to be fastenedly connected, and lower link flange [6] is provided with concave surface that support web plate [9] have been installed and the groove of placing O RunddichtringO [7]; Described O RunddichtringO [7], filtering element installing plate [8], support web plate [9] and the filter medium that will test and cylindrical shell gasket seal [11] are installed between lower link flange [6] and the last connecting flange [13]; Described water inlet [15] adopts and opens the plug form soon, when vacuum or pressurized operation, replaces with water inlet pressure terminal [15 ']; Described overflow adjustable pipe [21] adopts the plug form of opening soon; Be inserted on the described overflow vent elbow [22]; And be provided with the different overflow adjustable pipe [21] of length; Change the height that overflow exports [20] through the length of changing overflow adjustable pipe [21], so as to the liquid level in the control cylindrical shell [14], adjustable liquid level is respectively 50mm, 100mm, 150mm, 200mm, 250mm; Described liquid level gauge [23] the highest liquid level position should be higher than the position of the highest overflow outlet [20].
2. filter medium water permeability proving installation according to claim 1; It is characterized in that; The fastening clip [12] of described fast-open type is a kind of coupling assembling; Constitutive requirements comprise: open clip I [25] soon and open clip II [27] soon, clip rotating pin [32] and the ring nut [29], loose joint bolt [30] and the loose joint bolt bearing pin [31] that are used for fastening clip.
3. filter medium water permeability proving installation according to claim 1 is characterized in that, the described plug main member of opening soon comprises: the button collar [33] of adapter body [36], O RunddichtringO [35], elastic bayonet lock [34] and elastic bayonet lock.
4. filter medium water permeability proving installation according to claim 1 is characterized in that, described overflow outlet [20] is adopted and opened the plug form soon, when vacuum or pressurized operation, replaces with overflow vent pressure terminal [20 '].
5. method of using the described filter medium water permeability of claim 1 proving installation test water permeability is characterized in that the experimental liquid that adopts in the test process is a distilled water, said method comprising the steps of:
(1) chooses filter medium sample indefectible, open defect before the test; Being cut into diameter is 5 of 100mm circular specimens; For the filter medium sample of weaving form, for avoiding running, the edge need be heat-treated; Getting filter medium sample is dipped in the distilled water, to sample because of sinking to getting final product from gravity;
(2) with O RunddichtringO [7] with support web plate [9] and pack in the groove and concave surface of lower link flange [6]; Mounting filtering detail assembly panel [8]; Lie against filtering element installing plate [8] to the filter medium sample [10] for preparing again and support on the web plate [9], press cylindrical shell gasket seal [11], will go up again above connecting flange [13] and cylindrical shell [14] be pressed in gently; Must not make in the attention process that sample squints to some extent, fold; Use fastening clip [12] that lower link flange [6] and last connecting flange [13] are fastenedly connected at last, require to guarantee sealing, water permeable area is 50cm in the test process
2
(3) for the less filter medium of permeable resistance; Under normal pressure, measure the water permeability of filter medium, make experimental liquid get into cylindrical shell [14], observe the liquid level of the interior experimental liquid of cylindrical shell [14] through liquid level gauge [23] through water inlet pipe [15]; Change different overflow adjustable pipes [21]; Change the liquid level of the interior experimental liquid of cylindrical shell [14], make experimental liquid under action of pressure, pass through test sample, the liquid level of record experimental liquid; Should follow certain principle in the test process, should make experimental liquid that certain flow velocity is arranged, can not make the flow velocity of experimental liquid too fast again through filter medium; That is to say that the flow rates that sees through the experimental liquid of filter medium should be controlled in 1mm/s～50mm/s scope, for the slower sample of infiltration rate; Less, the according to circumstances suitable prolongation cumulative time of amount of permeate of accumulative total in 30 seconds, scope is 2min～5min; Can reduce the influence of turbulent flow so on the one hand, also be convenient to the metering of permeability time and permeable amount on the other hand measuring, treat system stability after; Take by weighing the quality of penetrating fluid in about 30 seconds, each sample carries out five tests, averages;
(4) vacuum or pressurized conditions are measured the water permeability of filter medium down, are used for the bigger sample of permeable resistance more, because the expulsive force in the process is bigger; The pressure reduction that the liquid of specimen surface produces can be ignored, and during test experimental liquid is got into cylindrical shell [14] through water inlet pipe [15], keeps a certain amount of experimental liquid on the test sample; Generally get 500mL, seal, seal with water inlet pressure terminal [15 '] replacement water inlet [15] with overflow vent pressure terminal [20 '] replacement overflow outlet [20]; Connect vacuum system through water delivering orifice [5] then and carry out vacuum filtration; Perhaps connect compression system and carry out pressure filtration, the penetrating fluid in the collection process, recording process pressure and required time through exhaust pressurization mouthful [16]; Each sample carries out five tests, averages;
(5) test liquid temp, test pressure, water permeable area, permeable amount and permeability time in the record mensuration process,, get repeatedly the average result of measured value again by the permeation rate and the permeable resistance of following each filter medium sample of formula calculating,
Permeation rate: Q
i=W
i/ t.A ρ
In the formula, Q
iThe permeability rate of-sample under certain pressure reduction, m
3/ m
2.s;
W
iThe permeable amount of-sample under certain pressure reduction, kg;
The used time of permeable amount that the t-sample obtains under certain pressure reduction, s;
The water permeable area of A-sample, m
2
The density of experimental liquid under ρ-test temperature, kg/m
3
Permeable resistance: R
i=Δ P
i/ μ Q
i
In the formula, R
i-permeable resistance, m
-1
Δ P-sample both sides pressure reduction, Pa;
The viscosity of experimental liquid under μ-test temperature, Pas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200423XA CN101887004B (en) | 2010-06-12 | 2010-06-12 | Device and method for testing water permeability of planar filter medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200423XA CN101887004B (en) | 2010-06-12 | 2010-06-12 | Device and method for testing water permeability of planar filter medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101887004A CN101887004A (en) | 2010-11-17 |
| CN101887004B true CN101887004B (en) | 2012-07-04 |
Family
ID=43073009
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| CN103962010A (en) * | 2013-01-28 | 2014-08-06 | 深圳市中科莲花净水科技有限公司 | Test apparatus for hollow fiber membrane inside-out water permeable amount |
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| CN107063971A (en) * | 2017-05-17 | 2017-08-18 | 台州海勃机械有限公司 | Simple filter cloth tester |
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| CN113029905B (en) * | 2021-03-13 | 2024-04-12 | 杭州市交通工程试验检测中心有限公司 | Geotechnical cloth effective aperture tester |
| CN114378514A (en) * | 2021-12-30 | 2022-04-22 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Expansion adjustable positioning head assembly for aviation heat exchanger welding fixture |
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| JP2002250002A (en) * | 2001-02-23 | 2002-09-06 | Nikken Kk | Water permeability testing device for drainage pavement |
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| US4979390A (en) * | 1988-12-01 | 1990-12-25 | Morris Schupack | Method and apparatus for testing relative permeability of materials |
| CN200993635Y (en) * | 2006-12-21 | 2007-12-19 | 北京市市政工程研究院 | Vacuum water penetrating block permeability coefficient detecting instrument |
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