CN104747737B - Film-covered filter element outer flushing valve - Google Patents
Film-covered filter element outer flushing valve Download PDFInfo
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- CN104747737B CN104747737B CN201510132366.9A CN201510132366A CN104747737B CN 104747737 B CN104747737 B CN 104747737B CN 201510132366 A CN201510132366 A CN 201510132366A CN 104747737 B CN104747737 B CN 104747737B
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- valve body
- filter element
- spool
- overlay film
- film filter
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
Abstract
The invention provides a film-covered filter element outer flushing valve, and relate to valves. The valve mainly comprises a lower valve body, a middle valve body, an upper valve body, a first valve element, a second valve element, a first spring, a second spring, a first O-shaped sealing ring and a second O-shaped sealing ring. The film-covered filter element outer flushing valve is installed at the upper end of a film-covered filter element. When the film-covered filter element is in a filtering stage, the film-covered filter element outer flushing valve is opened. When the film-covered filter element is in a backwash stage, the film-covered filter element outer flushing valve guides high-pressure liquid mediums conveyed by a water pump to the outer surface of the film-covered filter element, the film-covered filter element outer flushing valve guides induced flow formed by liquid mediums around the outer side of the film-covered filter element to the outer surface of the film-covered filter element, a filter cake formed by impurity particles and attached to the outer surface of the film-covered filter element is washed away, the film-covered filter element can be safely cleaned, use of control equipment large in size and high in cost can be avoided, and the film-covered filter element outer flushing valve can be suitable for filtering systems with toxic and flammable liquid mediums.
Description
Technical field
The present invention is the outer flushing valve of a kind of overlay film filter element, and it relates to a kind of valve, particularly relates to a kind of outer flushing valve for overlay film filter element cleaning.
Background technology
Overlay film filter element uses coated filter material, and coated filter material is with hot-pressing technique or bonding technique, polytetrafluoroethylmicroporous microporous membrane is covered the combined type filtrate that the top layer of the common filtering materials such as terylene needled felt is made.The hole of the polytetrafluoroethylmicroporous microporous membrane on coated filter material surface is the least, it is possible to achieve filtration high-precision to liquid medium or gas medium, is the filtering material of a kind of advanced technology, excellent performance.Owing to coated filter material is that bi-material is combined with each other, the highest meeting of reverse cleaning pressure makes polytetrafluoroethylmicroporous microporous membrane come off from base material surfaces such as terylene needled felts, causes filtrate to scrap, wears the accident of filter when filtering.The reverse cleaning systems most of the most traditional overlay film filter element uses the equipment such as elevated tank to guarantee the accurate control of reverse cleaning pressure.Owing to elevated tank is bulky, poor sealing performance, be not suitable for poisonous, the filtration system of flammable liquid medium.Filtration system poisonous, flammable liquid medium can only use the control equipment that water pump and pressure control valve etc. are complicated, and equipment cost is high, operational reliability is poor.
If one can be installed to control valve in overlay film filter element upper end, this control valve opening when overlay film filter element is in filtration stage, when overlay film filter element is in wash phase, the liquid medium of this control valve door knob water pump conveying guides the outer surface to overlay film filter element, the impurity particle being attached to overlay film filter element outer surface is rinsed well, then can safety cleaning overlay film filter element, it is avoided that again and uses the control equipment that volume is big, cost is high, and can be suitably used for poisonous, the filtration system of flammable liquid medium.
Summary of the invention
The backwashing equipment volume that it is an object of the invention to overcome traditional overlay film filter element is big, cost is high and more difficult is applicable to poisonous, the defect of flammable liquid medium, there is provided one to be arranged on overlay film filter element upper end, realize overlay film filter element filtering and the outer flushing valve of overlay film filter element of cleaning control.Embodiment of the present invention are as follows:
The total feature of the present invention is that the outer flushing valve of overlay film filter element is mainly made up of lower valve body, middle valve body, upper valve body, spool one, spool two, spring one, spring two, O-ring seals one, O-ring seals two.The outer flushing valve of overlay film filter element is fitted together by lower valve body, middle valve body, upper valve body the most respectively, valve body cavity of resorption and middle valve body epicoele in being formed inside middle valve body, spool two and spring two are arranged on middle valve body cavity of resorption, spool one and spring one and are arranged on middle valve body epicoele.
Upper valve body is in the semiclosed cylindrical shape that Open Side Down, there is external screw thread one upper valve body upper end, there is multiedge cylinder external screw thread one lower end, multiedge cylinder lower end is upper valve body bead, it it is upper valve body inner chamber inside upper valve body bead, upper valve body inner chamber has female thread one, has an axial upper valve body centre bore, upper valve body centre bore and upper valve body intracavity inter-connection in the middle of upper valve body upper surface.
nullMiddle valve body is in the semiclosed cylindrical shape that Open Side Down，There is external screw thread two middle valve body upper end，There is middle valve body bead external screw thread two lower end，It is o-ring groove one between external screw thread two and middle valve body bead，O-ring seals one is arranged in o-ring groove one，Middle valve body bead outer surface has several cannelures，It it is middle valve body cavity of resorption inside middle valve body bead，Middle valve body cavity of resorption has female thread two，It it is middle valve body epicoele inside external screw thread two，Middle valve body epicoele upper end has a cross section to be cross or lambdoid upper bracket，Gap between upper bracket is upper bracket hole，There is the lower carriage of a ring-shaped section and ring-shaped middle valve body epicoele lower end，Gap between lower carriage is several valve seat through-holes，Middle valve body epicoele is connected by valve seat through-hole with middle valve body cavity of resorption，Upper bracket links together with lower carriage，Spring intracavity is had in the middle of lower carriage，Middle valve body epicoele is connected by spring intracavity with middle valve body cavity of resorption，Valve body epicoele in upper bracket hole and valve seat through-hole composition.
Lower valve body is cylindrical, external screw thread three is had in the middle of lower valve body, there is lower valve body bead external screw thread three lower end, it is o-ring groove two between external screw thread three and lower valve body bead, O-ring seals two is arranged in o-ring groove two, there are several axial spray-holes lower valve body bead lower surface, there is a valve seat boss lower valve body upper end, there is a spring groove valve seat boss lower end, it it is lower body cavity inside valve seat boss, valve seat boss is sealing surface of seat inside upper surface, lower valve body bead lower end links together with deflection cone, deflection cone lower end inside has connection female thread, an annular guide shell is had outside deflection cone, several deflectors are guide shell, deflection cone and lower valve body bead link together, annular space between guide shell and deflection cone is diversion cavity, it is hole of confluxing between guide shell and lower valve body bead.
Spool one is in disk form, and there is a spool groove spool one upper end, and the lower end of spring one is arranged in spool groove.Spool two is in annular, and there is a spool boss spool two lower end, and the upper end of spring two is arranged on outside spool boss.
During the outer flushing valve assembling of overlay film filter element, spring one is arranged in the spring intracavity of middle valve body, spool one is arranged on spring one lower end, spring two is arranged in the spring groove of lower valve body, spool two is arranged on spring two upper end, it is linked together by external screw thread three and two lower valve bodies of female thread and middle valve body, is linked together by valve body and upper valve body in external screw thread two and female thread one.
During the outer flushing valve assembling of overlay film filter element, by multiedge cylinder, cannelure, deflector, upper valve body, middle valve body, lower valve body are fixed on special fixture, complete the outer flushing valve assembly work of overlay film filter element.
After the outer flushing valve assembling of overlay film filter element, spool one under the effect of medium pressure liquid, spool one upwards compression spring one, make spool one lower surface lift off a seat sealing surface certain distance, the outer flushing valve of overlay film filter element is in opening.Spool one loses the effect of medium pressure liquid, and under the elastic force effect of spring one, spool one moves down, and makes spool one lower surface be fitted on sealing surface of seat, and the outer flushing valve of overlay film filter element is closed.
Spool two under the effect of medium pressure liquid, the downward compression spring two of spool two, make spool two upper surface leave lower carriage lower surface certain distance, spool two can not seal valve seat through hole, the outer flushing valve of overlay film filter element is in outer cleaning state.Spool two loses the effect of medium pressure liquid, and under the elastic force effect of spring two, spool two moves up, and makes spool two upper surface be fitted on lower carriage lower surface, and the outer flushing valve of overlay film filter element is closed.
Filtration and cleaning control valve as overlay film filter element, the outer flushing valve of overlay film filter element is when application, in the connection female thread of the lower valve body that overlay film filter element is arranged on the outer flushing valve of overlay film filter element, the outer flushing valve of overlay film filter element is arranged in filter by the external screw thread one of upper valve body.
The overlay film filter element filtering phase process being provided with the outer flushing valve of overlay film filter element is:
In filtration stage, liquid medium enters in filter canister body, liquid medium is then passed through the inner chamber of the micropore entrance overlay film filter element of overlay film filter element, liquid medium is entered in the outer flushing valve of overlay film filter element by valve inlet, liquid medium is through lower body cavity, spool one is under the effect of medium pressure liquid, liquid medium promotes spool one lower surface, spool one upwards compression spring one, spool one lower surface is made to lift off a seat sealing surface certain distance, the outer flushing valve of overlay film filter element is in opening, in liquid medium process, valve body epicoele is entered the drain pipe of filter by upper valve body centre bore, liquid medium is from drain pipe discharge filter tank body.Impurity particle in liquid medium is then intercepted at the outer surface of overlay film filter element and forms filter cake.
After filtration stage terminates, liquid medium stops entering in filter canister body, and spool one loses the effect of medium pressure liquid, under the elastic force effect of spring one, spool one moves down, and makes spool one lower surface be fitted on sealing surface of seat, and the outer flushing valve of overlay film filter element is closed.
The outer wash phase process of overlay film filter element being provided with the outer flushing valve of overlay film filter element is:
nullOutside in wash phase，The liquid medium of water pump conveying is from the drain pipe of filter enters overlay film filter element in flushing valve，Liquid medium is by intracavity on valve body in the entrance of upper valve body centre bore，Spool two is under the effect of medium pressure liquid，Liquid medium promotes spool two upper surface，The downward compression spring two of spool two，Spool two upper surface is made to leave lower carriage lower surface certain distance，Spool two can not seal valve seat through hole，The outer flushing valve of overlay film filter element is in outer cleaning state，Liquid medium is sprayed liquid medium liquid stream by spray-hole outside overlay film filter element in filter canister body outside flushing valve，Liquid medium liquid stream passes diversion cavity，Liquid medium liquid stream flow velocity in diversion cavity is very fast，Make the pressure less than guide shell outer periphery of the pressure in diversion cavity，The liquid medium of guide shell outer periphery forms induced flow，Induced flow enters diversion cavity from hole of confluxing，Liquid medium and induced flow that the outer flushing valve of overlay film filter element carries water pump guide the outer surface to overlay film filter element，The filter cake formed by impurity particle being attached to overlay film filter element outer surface is rinsed well.
After wash phase terminates outside, liquid medium stops entering in the outer flushing valve of overlay film filter element, spool two loses the effect of medium pressure liquid, under the elastic force effect of spring two, spool two moves up, making spool two upper surface be fitted on lower carriage lower surface, the outer flushing valve of overlay film filter element is closed.
The technical scheme of the outer flushing valve of overlay film filter element is installed in overlay film filter element upper end, abandon traditional overlay film filter element reverse cleaning principle, use the parallel outer Cleaning principle of overlay film filter element, stop the hidden danger that polytetrafluoroethylmicroporous microporous membrane can be made to come off during overlay film filter element reverse cleaning from base material surfaces such as terylene needled felts, this technical scheme can safety cleaning overlay film filter element, it is avoided that again and uses the control equipment that volume is big, cost is high, and can be suitably used for poisonous, the filtration system of flammable liquid medium.
Accompanying drawing explanation
Figure of description is structure chart and the schematic diagram of the outer flushing valve of overlay film filter element.Wherein Fig. 1 is the axonometric drawing of the outer flushing valve of overlay film filter element.Fig. 2 is the isometric cutaway view of the outer flushing valve of overlay film filter element, and the outer flushing valve of overlay film filter element is closed.Fig. 3 is the isometric cutaway view of the outer flushing valve of overlay film filter element, and the outer flushing valve of overlay film filter element is in opening, shows liquid medium circulation path in figure.Fig. 4 is the isometric cutaway view of the outer flushing valve of overlay film filter element, and the outer flushing valve of overlay film filter element is in outer cleaning state, shows liquid medium circulation path and induced flow circulation path in figure.Fig. 5 is the axonometric drawing of the outer flushing valve of overlay film filter element and the assembling of overlay film filter element.Fig. 6 is the axonometric drawing of upper valve body.Fig. 7 is the isometric cutaway view of upper valve body.Fig. 8 is the axonometric drawing of middle valve body.Fig. 9 be middle valve body look up axonometric drawing.Figure 10 is the isometric cutaway view of middle valve body.Figure 11 is the axonometric drawing of lower valve body.Figure 12 is the isometric cutaway view of lower valve body.Figure 13 is the isometric cutaway view of spool one.Figure 14 is the isometric cutaway view of spool two.
nullFigure is labeled with valve inlet 1、Lower valve body 2、Guide shell 3、Deflection cone 4、Lower body cavity 5、Lower valve body bead 6、Spray-hole 7、Middle valve body cavity of resorption 8、Middle valve body 9、Lower carriage 10、Middle valve body epicoele 11、Upper valve body 12、Multiedge cylinder 13、Upper valve body centre bore 14、Upper bracket hole 15、Upper bracket 16、Spring 1、Spool 1、O-ring seals 1、Spool 2 20、Spring 2 21、O-ring seals 2 22、Deflector 23、Conflux hole 24、Diversion cavity 25、Couple female thread 26、Liquid medium 27、Induced flow 28、Cannelure 29、Overlay film filter element 30、Female thread 1、Upper valve body inner chamber 32、External screw thread 1、Female thread 2 34、O-ring groove 1、External screw thread 2 36、Valve seat through-hole 37、Spring intracavity 38、O-ring groove 2 39、Spring groove 40、Sealing surface of seat 41、Valve seat boss 42、External screw thread 3 43、Spool groove 44、Spool boss 45、Upper valve body bead 46、Middle valve body bead 47.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further discussed below.
Seeing figures.1.and.2, the outer flushing valve of overlay film filter element is mainly made up of lower valve body 2, middle valve body 9, upper valve body 12, spool 1, spool 2 20, spring 1, spring 2 21, O-ring seals 1, O-ring seals 2 22.The outer flushing valve of overlay film filter element is fitted together by lower valve body 2, middle valve body 9, upper valve body 12 the most respectively, valve body cavity of resorption 8 and middle valve body epicoele 11 in being formed inside middle valve body 9, spool 2 20 and spring 2 21 are arranged on middle valve body cavity of resorption 8, spool 1 and spring 1 and are arranged on middle valve body epicoele 11.
With reference to Fig. 6 and Fig. 7, upper valve body 12 is in the semiclosed cylindrical shape that Open Side Down, there is external screw thread 1 upper valve body 12 upper end, there is multiedge cylinder 13 external screw thread 1 lower end, multiedge cylinder 13 lower end is upper valve body bead 46, is upper valve body inner chamber 32 inside upper valve body bead 46, and upper valve body inner chamber 32 has female thread 1, having an axial upper valve body centre bore 14 in the middle of upper valve body 12 upper surface, upper valve body centre bore 14 is connected with upper valve body inner chamber 32.
nullWith reference to Fig. 8、Fig. 9 and Figure 10，Middle valve body 9 is in the semiclosed cylindrical shape that Open Side Down，There is external screw thread 2 36 middle valve body 9 upper end，There is middle valve body bead 47 external screw thread 2 36 lower end，It is o-ring groove 1 between external screw thread 2 36 and middle valve body bead 47，O-ring seals 1 is arranged in o-ring groove 1，Middle valve body bead 47 outer surface has several cannelures 29，It it is middle valve body cavity of resorption 8 inside middle valve body bead 47，Middle valve body cavity of resorption 8 has female thread 2 34，It it is middle valve body epicoele 11 inside external screw thread 2 36，Middle valve body epicoele 11 upper end has a cross section to be cross or lambdoid upper bracket 16，Gap between upper bracket 16 is upper bracket hole 15，There is the lower carriage 10 of a ring-shaped section and ring-shaped middle valve body epicoele 11 lower end，Gap between lower carriage 10 is several valve seat through-holes 37，Middle valve body epicoele 11 is connected by valve seat through-hole 37 with middle valve body cavity of resorption 8，Upper bracket 16 links together with lower carriage 10，Spring intracavity 38 is had in the middle of lower carriage 10，Middle valve body epicoele 11 is connected by spring intracavity 38 with middle valve body cavity of resorption 8，Valve body epicoele 11 in upper bracket hole 15 and valve seat through-hole 37 composition.
nullWith reference to Figure 11 and Figure 12，Lower valve body 2 is cylindrical，External screw thread 3 43 is had in the middle of lower valve body 2，There is lower valve body bead 6 external screw thread 3 43 lower end，It is o-ring groove 2 39 between external screw thread 3 43 and lower valve body bead 6，O-ring seals 2 22 is arranged in o-ring groove 2 39，There are several axial spray-holes 7 lower valve body bead 6 lower surface，There is a valve seat boss 42 lower valve body 2 upper end，There is a spring groove 40 valve seat boss 42 lower end，It it is lower body cavity 5 inside valve seat boss 42，It is sealing surface of seat 41 inside valve seat boss 42 upper surface，Lower valve body bead 6 lower end links together with deflection cone 4，Deflection cone 4 lower end inside has connection female thread 26，An annular guide shell 3 is had outside deflection cone 4，23 guide shells 3 of several deflectors、Deflection cone 4 and lower valve body bead 6 link together，Annular space between guide shell 3 and deflection cone 4 is diversion cavity 25，It is hole 24 of confluxing between guide shell 3 and lower valve body bead 6.
With reference to Figure 13 and Figure 14, spool 1 is in disk form, and there is a spool groove 44 spool 1 upper end, and the lower end of spring 1 is arranged in spool groove 44.Spool 2 20 is in annular, and there is a spool boss 45 spool 2 20 lower end, and the upper end of spring 2 21 is arranged on outside spool boss 45.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, during the outer flushing valve assembling of overlay film filter element, spring 1 is arranged in the spring intracavity 38 of middle valve body 9, spool 1 is arranged on spring 1 lower end, spring 2 21 is arranged in the spring groove 40 of lower valve body 2, spool 2 20 is arranged on spring 2 21 upper end, is linked together by external screw thread 3 43 and the lower valve body 2 of female thread 2 34 and middle valve body 9, is linked together by valve body 9 and upper valve body 12 in external screw thread 2 36 and female thread one 31.
During the outer flushing valve assembling of overlay film filter element, it is fixed on special fixture by multiedge cylinder 13, cannelure 29,23 upper valve bodies 12 of deflector, middle valve body 9, lower valve body 2, completes the outer flushing valve assembly work of overlay film filter element.
After the outer flushing valve assembling of overlay film filter element, spool 1 under the effect of liquid medium 27 pressure, spool 1 upwards compression spring 1, make spool 1 lower surface lift off a seat sealing surface 41 certain distance, the outer flushing valve of overlay film filter element is in opening.Spool 1 loses the effect of liquid medium 27 pressure, and under the elastic force effect of spring 1, spool 1 moves down, and makes spool 1 lower surface be fitted on sealing surface of seat 41, and the outer flushing valve of overlay film filter element is closed.
Spool 2 20 under the effect of liquid medium 27 pressure, the downward compression spring 2 21 of spool 2 20, make spool 2 20 upper surface leave lower carriage 10 lower surface certain distance, spool 2 20 can not seal valve seat through hole 37, the outer flushing valve of overlay film filter element is in outer cleaning state.Spool 2 20 loses the effect of liquid medium 27 pressure, and under the elastic force effect of spring 2 21, spool 2 20 moves up, and makes spool 2 20 upper surface be fitted on lower carriage 10 lower surface, and the outer flushing valve of overlay film filter element is closed.
Filtration and cleaning control valve as overlay film filter element 30, the outer flushing valve of overlay film filter element is when application, in the connection female thread 26 of the lower valve body 2 that overlay film filter element 30 is arranged on the outer flushing valve of overlay film filter element, the outer flushing valve of overlay film filter element is arranged in filter by the external screw thread 1 of upper valve body 12.
The overlay film filter element 30 filtration stage process being provided with the outer flushing valve of overlay film filter element is:
In filtration stage, liquid medium 27 enters in filter canister body, liquid medium 27 is then passed through the inner chamber of the micropore entrance overlay film filter element 30 of overlay film filter element 30, liquid medium 27 is entered in the outer flushing valve of overlay film filter element by valve inlet 1, liquid medium 27 is through lower body cavity 5, spool 1 is under the effect of liquid medium 27 pressure, liquid medium 27 promotes spool 1 lower surface, spool 1 upwards compression spring 1, spool 1 lower surface is made to lift off a seat sealing surface 41 certain distance, the outer flushing valve of overlay film filter element is in opening, in liquid medium 27 process, valve body epicoele 11 is entered the drain pipe of filter by upper valve body centre bore 14, liquid medium 27 is from drain pipe discharge filter tank body.Impurity particle in liquid medium 27 is then intercepted at the outer surface of overlay film filter element 30 and forms filter cake.
After filtration stage terminates, liquid medium 27 stops entering in filter canister body, spool 1 loses the effect of liquid medium 27 pressure, under the elastic force effect of spring 1, spool 1 moves down, making spool 1 lower surface be fitted on sealing surface of seat 41, the outer flushing valve of overlay film filter element is closed.
The overlay film filter element 30 outer wash phase process being provided with the outer flushing valve of overlay film filter element is:
nullOutside in wash phase，The liquid medium 27 of water pump conveying is from the drain pipe of filter enters overlay film filter element in flushing valve，Liquid medium 27 entered by upper valve body centre bore 14 in valve body epicoele 11，Spool 2 20 is under the effect of liquid medium 27 pressure，Liquid medium 27 promotes spool 2 20 upper surface，The downward compression spring 2 21 of spool 2 20，Spool 2 20 upper surface is made to leave lower carriage 10 lower surface certain distance，Spool 2 20 can not seal valve seat through hole 37，The outer flushing valve of overlay film filter element is in outer cleaning state，Liquid medium 27 is sprayed liquid medium 27 liquid stream by spray-hole 7 outside overlay film filter element in filter canister body outside flushing valve，Liquid medium 27 liquid stream passes diversion cavity 25，Liquid medium 27 liquid stream flow velocity in diversion cavity 25 is very fast，Make the pressure less than guide shell 3 outer periphery of the pressure in diversion cavity 25，The liquid medium 27 of guide shell 3 outer periphery forms induced flow 28，Induced flow 28 enters diversion cavity 25 from hole 24 of confluxing，Liquid medium 27 and induced flow 28 that the outer flushing valve of overlay film filter element carries water pump guide the outer surface to overlay film filter element 30，The filter cake formed by impurity particle being attached to overlay film filter element 30 outer surface is rinsed well.
After wash phase terminates outside, liquid medium 27 stops entering in the outer flushing valve of overlay film filter element, spool 2 20 loses the effect of liquid medium 27 pressure, under the elastic force effect of spring 2 21, spool 2 20 moves up, making spool 2 20 upper surface be fitted on lower carriage 10 lower surface, the outer flushing valve of overlay film filter element is closed.
The technical scheme of the outer flushing valve of overlay film filter element is installed in overlay film filter element 30 upper end, abandon traditional overlay film filter element 30 reverse cleaning principle, use the parallel outer Cleaning principle of overlay film filter element 30, stop the hidden danger that polytetrafluoroethylmicroporous microporous membrane can be made to come off during overlay film filter element 30 reverse cleaning from base material surfaces such as terylene needled felts, this technical scheme can safety cleaning overlay film filter element 30, it is avoided that again and uses the control equipment that volume is big, cost is high, and can be suitably used for poisonous, the filtration system of flammable liquid medium.
Claims (2)
1. the outer flushing valve of overlay film filter element, it is characterised in that the outer flushing valve of overlay film filter element is mainly made up of lower valve body (2), middle valve body (9), upper valve body (12), spool one (18), spool two (20), spring one (17), spring two (21), O-ring seals one (19), O-ring seals two (22)；The outer flushing valve of overlay film filter element is fitted together by lower valve body (2), middle valve body (9), upper valve body (12) the most respectively, valve body cavity of resorption (8) and middle valve body epicoele (11) in middle valve body (9) inner side is formed, spool two (20) and spring two (21) are arranged on middle valve body cavity of resorption (8), spool one (18) and spring one (17) and are arranged on middle valve body epicoele (11)；
Upper valve body (12) is in the semiclosed cylindrical shape that Open Side Down, there is external screw thread one (33) upper valve body (12) upper end, there is multiedge cylinder (13) external screw thread one (33) lower end, multiedge cylinder (13) lower end is upper valve body bead (46), upper valve body bead (46) inner side is upper valve body inner chamber (32), upper valve body inner chamber (32) has female thread one (31), having an axial upper valve body centre bore (14) in the middle of upper valve body (12) upper surface, upper valve body centre bore (14) is connected with upper valve body inner chamber (32)；
nullMiddle valve body (9) is in the semiclosed cylindrical shape that Open Side Down，There is external screw thread two (36) middle valve body (9) upper end，There is middle valve body bead (47) external screw thread two (36) lower end，It it is o-ring groove one (35) between external screw thread two (36) and middle valve body bead (47)，O-ring seals one (19) is arranged in o-ring groove one (35)，Middle valve body bead (47) outer surface has several cannelures (29)，Middle valve body bead (47) inner side is middle valve body cavity of resorption (8)，Middle valve body cavity of resorption (8) has female thread two (34)，External screw thread two (36) inner side is middle valve body epicoele (11)，Middle valve body epicoele (11) upper end has a cross section to be cross or lambdoid upper bracket (16)，Gap between upper bracket (16) is upper bracket hole (15)，There is the lower carriage (10) of a ring-shaped section and ring-shaped middle valve body epicoele (11) lower end，Gap between lower carriage (10) is several valve seat through-holes (37)，Middle valve body epicoele (11) is connected by valve seat through-hole (37) with middle valve body cavity of resorption (8)，Upper bracket (16) links together with lower carriage (10)，Spring intracavity (38) is had in the middle of lower carriage (10)，Middle valve body epicoele (11) is connected by spring intracavity (38) with middle valve body cavity of resorption (8)，Valve body epicoele (11) in upper bracket hole (15) and valve seat through-hole (37) composition；
nullLower valve body (2) is cylindrical，External screw thread three (43) is had in the middle of lower valve body (2)，There is lower valve body bead (6) external screw thread three (43) lower end，It it is o-ring groove two (39) between external screw thread three (43) and lower valve body bead (6)，O-ring seals two (22) is arranged in o-ring groove two (39)，There are several axial spray-holes (7) lower valve body bead (6) lower surface，There is a valve seat boss (42) lower valve body (2) upper end，There is a spring groove (40) valve seat boss (42) lower end，Valve seat boss (42) inner side is lower body cavity (5)，It is sealing surface of seat (41) inside valve seat boss (42) upper surface，Lower valve body bead (6) lower end links together with deflection cone (4)，Deflection cone (4) lower end inside has connection female thread (26)，There is an annular guide shell (3) in deflection cone (4) outside，Several deflectors (23) are guide shell (3)、Deflection cone (4) and lower valve body bead (6) link together，Annular space between guide shell (3) and deflection cone (4) is diversion cavity (25)，It it is hole (24) of confluxing between guide shell (3) and lower valve body bead (6)；
Spool one (18) is in disk form, and there is a spool groove (44) spool one (18) upper end, and the lower end of spring one (17) is arranged in spool groove (44)；Spool two (20) is in annular, and there is a spool boss (45) spool two (20) lower end, and the upper end of spring two (21) is arranged on spool boss (45) outside；
During the outer flushing valve assembling of overlay film filter element, spring one (17) is arranged in the spring intracavity (38) of middle valve body (9), spool one (18) is arranged on spring one (17) lower end, spring two (21) is arranged in the spring groove (40) of lower valve body (2), spool two (20) is arranged on spring two (21) upper end, by external screw thread three (43) and female thread two (34), lower valve body (2) and middle valve body (9) are linked together, by external screw thread two (36) and female thread one (31), middle valve body (9) and upper valve body (12) are linked together.
The outer flushing valve of overlay film filter element the most according to claim 1, it is characterized in that the filtration as overlay film filter element (30) and cleaning control valve, the outer flushing valve of overlay film filter element is when application, in the connection female thread (26) of the lower valve body (2) that overlay film filter element (30) is arranged on the outer flushing valve of overlay film filter element, the outer flushing valve of overlay film filter element is arranged in filter by the external screw thread one (33) of upper valve body (12)；
Overlay film filter element (30) the filtration stage process being provided with the outer flushing valve of overlay film filter element is:
nullIn filtration stage，Liquid medium (27) enters in filter canister body，Liquid medium (27) is then passed through the inner chamber of micropore entrance overlay film filter element (30) of overlay film filter element (30)，Liquid medium (27) is entered in the outer flushing valve of overlay film filter element by valve inlet (1)，Liquid medium (27) is through lower body cavity (5)，Spool one (18) is under the effect of liquid medium (27) pressure，Liquid medium (27) promotes spool one (18) lower surface，Spool one (18) upwards compression spring one (17)，Spool one (18) lower surface is made to lift off a seat sealing surface (41) certain distance，The outer flushing valve of overlay film filter element is in opening，In liquid medium (27) process, valve body epicoele (11) is entered the drain pipe of filter by upper valve body centre bore (14)，Liquid medium (27) is from drain pipe discharge filter tank body；Impurity particle in liquid medium (27) is then intercepted at the outer surface of overlay film filter element (30) and forms filter cake；
After filtration stage terminates, liquid medium (27) stops entering in filter canister body, spool one (18) loses the effect of liquid medium (27) pressure, under the elastic force effect of spring one (17), spool one (18) moves down, making spool one (18) lower surface be fitted on sealing surface of seat (41), the outer flushing valve of overlay film filter element is closed；
Overlay film filter element (30) the outer wash phase process being provided with the outer flushing valve of overlay film filter element is:
nullOutside in wash phase，The liquid medium (27) of water pump conveying is from the drain pipe of filter enters overlay film filter element in flushing valve，During liquid medium (27) is entered by upper valve body centre bore (14), valve body epicoele (11) is interior，Spool two (20) is under the effect of liquid medium (27) pressure，Liquid medium (27) promotes spool two (20) upper surface，The downward compression spring two (21) of spool two (20)，Spool two (20) upper surface is made to leave lower carriage (10) lower surface certain distance，Spool two (20) can not seal valve seat through hole (37)，The outer flushing valve of overlay film filter element is in outer cleaning state，Liquid medium (27) is sprayed liquid medium (27) liquid stream by spray-hole (7) outside overlay film filter element in filter canister body outside flushing valve，Liquid medium (27) liquid stream passes diversion cavity (25)，Liquid medium (27) liquid stream flow velocity in diversion cavity (25) is very fast，Make the pressure less than guide shell (3) outer periphery of the pressure in diversion cavity (25)，The liquid medium (27) of guide shell (3) outer periphery forms induced flow (28)，Induced flow (28) enters diversion cavity (25) from hole of confluxing (24)，Liquid medium (27) and induced flow (28) that the outer flushing valve of overlay film filter element carries water pump guide the outer surface to overlay film filter element (30)，The filter cake formed by impurity particle being attached to overlay film filter element (30) outer surface is rinsed well；
After wash phase terminates outside, liquid medium (27) stops entering in the outer flushing valve of overlay film filter element, spool two (20) loses the effect of liquid medium (27) pressure, under the elastic force effect of spring two (21), spool two (20) moves up, making spool two (20) upper surface be fitted on lower carriage (10) lower surface, the outer flushing valve of overlay film filter element is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510132366.9A CN104747737B (en) | 2015-03-25 | 2015-03-25 | Film-covered filter element outer flushing valve |
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| CN201510132366.9A CN104747737B (en) | 2015-03-25 | 2015-03-25 | Film-covered filter element outer flushing valve |
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| CN104747737A CN104747737A (en) | 2015-07-01 |
| CN104747737B true CN104747737B (en) | 2017-01-11 |
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| CN201074688Y (en) * | 2007-08-08 | 2008-06-18 | 刘传均 | Multi-outlet control valve for recoil type water quality purifying device |
| CN201366270Y (en) * | 2009-02-05 | 2009-12-23 | 汤庆华 | Convenient type rotary external cleaning filtering device |
| CN102042427A (en) * | 2009-10-22 | 2011-05-04 | 梁华羽 | Backflushing valve |
| CN101975284B (en) * | 2010-09-21 | 2012-07-25 | 浙江沁园水处理科技有限公司 | Positive and negative control valve |
| AU2011311175B2 (en) * | 2010-10-07 | 2016-06-30 | Amiad Water Systems Ltd. | Fluid filtering unit and system |
| CN102410385A (en) * | 2011-08-08 | 2012-04-11 | 温岭市润通电器有限公司 | Automatic blowdown control valve |
| CN203836281U (en) * | 2013-11-28 | 2014-09-17 | 余姚市亚东塑业有限公司 | Flow controller and valve |
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