CN205856063U - The attachment structure of shunting disk and mandrel and welding tooling thereof - Google Patents

Abstract

The utility model discloses a kind of shunting disk and the attachment structure of mandrel and welding tooling thereof.This attachment structure includes shunting disk and mandrel, is formed with welded gaps and/or bevel for welding between shunting disk and mandrel, and at described welded gaps and/or bevel for welding, shunting disk is welded as a whole with mandrel.This welding tooling includes that fixed part, described fixed part include bracing frame；Limiting section, described limiting section includes the first limit base that can coordinate and the second limit base being correspondingly arranged with described first limit base and coordinating with shunting disk with mandrel, described first limit base and the second limit base be connected with support frame as described above respectively after at described first limit base, formed between the second limit base and bracing frame and be available for shunting disk and working place that mandrel is welded to connect.Use and be welded to connect the axiality that can control shunting disk and mandrel more accurately, and improve its structural stability, it is to avoid shunting disk produces certain rocking or inclination etc. under material flow drives during compression film core.

Description

The attachment structure of shunting disk and mandrel and welding tooling thereof

Technical field

This utility model relates to attachment structure and the welding tooling thereof of shunting disk and mandrel in filtration, purification field.

Background technology

Present applicant develops a kind of membrane filtration module being mainly used in sewage nanofiltration or reverse-osmosis treated, this Membrane filtration module, including shell, mandrel, film core, the first end-cap assembly, the second end-cap assembly, film core pre-pressing structure and raw material Fluid input port and purification fluid outlet, described film core retainer plate is located on mandrel and is made up of multiple membrane filter units, by these The film core of membrane filter unit composition is configured to axial compression state by film core pre-pressing structure and is placed in described first end cap group Between part and the second end-cap assembly, described shell is arranged on the outside of film core and connects described first end-cap assembly and second respectively End-cap assembly；During filtration, material flow is after described material flow input port flows into, and warp is relative with the second end-cap assembly and puts Film core axial end passes sequentially through that each membrane filter unit is backward relative with the first end-cap assembly and the film mandrel put is to end motion, mistake The purification fluid of filter is discharged from described purification fluid outlet.

Publication No. CN103657414A applied for by applicant, entitled " with end Inlet and outlet water separating and filtering film post and Feed liquid processing method " patent documentation (calling list of references in the following text) disclose a kind of membrane filtration module, this membrane filtration module leads to exactly Cross what aforesaid way carried out filtering；Additionally, the document it is also specifically disclosed that the film core pre-pressing structure of this membrane filtration module, described film Core pre-pressing structure includes the nut being arranged on mandrel, and the axial pre tightening force applied by the nut on mandrel makes film core in axially Impaction state and be placed between the first end-cap assembly and the second end-cap assembly.

Applicant finds during the life-time service to above-mentioned membrane filtration module, the most after a period of operation this film Filter assemblies arises that the problem that seepage and filter effect are deteriorated.

In order to probe into the reason that this problem occurs, applicant have employed the operation to membrane filtration module of the multiple test instrunment Work carries out data monitoring, and unrecoverable data is analyzed during contrast finding over time, is arranged in film core pre-pressing structure Its pretightning force will be less than design pretightning force, again fastening nut after membrane filtration module works a period of time for nut on mandrel After, membrane filtration module just can recover normal operating conditions.

Applicant finds after further test, the fastening frequency of the nut being arranged on mandrel need to be controlled 1 time/ About 200 hours, just it is avoided that and causes because pretightning force weakens membrane filtration module that the problem of seepage occurs, and raw in actual industrial In product, sewage disposal uses multiple membrane filtration module to match with other devices often, improves sewage treating efficiency and reality Existing Automated condtrol, thus causes in actual production high to the maintenance cost of multiple membrane filtration modules, greatly reduces film The convenience that filter assemblies uses.

On the basis of the above, utility model people finds after test further and research, causes above-mentioned nut pretightning force to subtract Weak principal element is: owing to membrane filter unit is in axial compression state under the effect of film core pre-pressing structure, and in mistake During filter, due to the effect of filtration pressure difference, fluid impingement force etc., easily there is less plastic deformation in membrane filter unit, thus Cause film core pre-pressing structure that the axial compression of film core is affected, once the axial compression shape no longer keeping installing of film core State, the most easily there is seepage, blowby, thus has a strong impact on membrane filtration in material flow and/or purification fluid in membrane filtration module The sealing effectiveness of assembly and filter effect.

Utility model content

For above-mentioned technical problem, this utility model aims to provide one can preferably ensure that film mandrel is to impaction state Membrane filtration module and film core pre-pressing structure and parts peculiar.

Membrane filtration module of the present utility model, including shell, mandrel, film core, the first end-cap assembly, the second end-cap assembly, Film core pre-pressing structure and material flow input port and purify fluid outlet, described film core retainer plate is located on mandrel and by multiple films Filter element forms, the film core being made up of these membrane filter units be configured to axial compression state by film core pre-pressing structure and Being placed between described first end-cap assembly and the second end-cap assembly, described shell is arranged on the outside of film core and connects described respectively First end-cap assembly and the second end-cap assembly；During filtration, material flow is after described material flow input port flows into, through with second It is backward relative with the first end-cap assembly and put that the film core axial end that end-cap assembly is relatively put passes sequentially through each membrane filter unit Film mandrel is to end motion, and filtered purification fluid is discharged from described purification fluid outlet；Described film core pre-pressing structure has The floating type hold-down mechanism moved towards the direction of axial compression film core when filtering.

Each membrane filter unit can be played the work of fastening of floating by described floating type hold-down mechanism when film core filters With, effectively avoid film core because being caused film core pre-pressing structure pair by the effect of filtration pressure difference, material flow impulsive force etc. for a long time The situation that the pretightning force of film core weakens, thus preferably ensure the axial compression state of film core, membrane filtration module is greatly reduced Frequency of maintenance and cause the risk factor of seal failure because film mandrel is affected to impaction state, improves membrane filtration module Ease of use, enable membrane filtration module to keep preferable strainability in a long time, reduce and produce and safeguard into This, on the basis of not increasing the cost that enterprise is too much, have important economic implications and environmental protection to whole filtration, purification industry Meaning.

For the film core pre-pressing structure of above-mentioned membrane filtration module, described film core retainer plate is located on mandrel and by multiple membrane filtration lists Unit's composition, the film core being made up of these membrane filter units is configured to axial compression state by film core pre-pressing structure and is placed in the Between one end-cap assembly and the second end-cap assembly；During filtration, material flow is through and the film mandrel put relative with the second end-cap assembly Pass sequentially through that each membrane filter unit is backward relative with the first end-cap assembly to end and the film mandrel put is to end motion；This film core pretension Structure has the floating type hold-down mechanism moved when filtering towards the direction of axial compression film core.

Preferably, described floating type hold-down mechanism can change adaptive towards the direction fortune compressing film core with the state of film core Dynamic.

Concrete, described floating type hold-down mechanism includes film mandrel to being pressed in the first end-cap assembly and the second end cap group Retention mechanism between part, and be located between the second end-cap assembly and film core and can be driven and court by material flow when filtering The floating member of the direction motion of axial compression film core.

Described floating member on the one hand can be on the premise of retention mechanism applies axial pre tightening force to film core, when filtering Driven by material flow and compress film core further, make film core remain preferable axial compression state, and to membrane filtration list Unit produces the compression of trace vertically when filtering and plays compensating action, it is to avoid because of film core in filter process because of its film mistake Filter unit produces the compression of trace vertically, and causes the situation that the pretightning force of retention mechanism weakens；The most described Floating member also can share the material flow pressure to film core, thus can alleviate filtration pressure difference, raw material stream to a certain extent The active force to film core such as body impact, further reduces over the pretightning force impaired risks coefficient of retention mechanism during filter.

Preferably, the linkage of described floating member and mandrel is arranged, and floating member Neng Dai moving mandrel is overall towards compressing film core Moving in direction, the axial compression state ensureing film core is had more preferable effect.

Optionally, described floating member and the unsettled setting of the second end-cap assembly.

Another kind of optional structure is that described floating member is seated on the second end-cap assembly.

Have for making the equally distributed shunting disk of material flow due to standing in membrane filtration module, and shunting disk is existing Membrane filtration module in fix with the second end-cap assembly and to be connected, therefore in order to simplify structure, reduce the making of membrane filtration module Cost, it is preferred that described floating member includes the shunting disk being sheathed on mandrel, described shunting disk is located at film core and the second end It is flexibly connected between cap assemblies and with the second end-cap assembly, is so utilizing shunting disk that material flow is carried out the same of uniform divided flows Time, so that it may the driving force directly utilizing material flow drives shunting disk motion, thus compresses film core under the effect of shunting disk.

When using the structure of unsettled setting, the whole end face of shunting disk all can contact with material flow, therefore is conducive to increasing The material flow active area to shunting disk, thus increase driving force.

And shunting disk is seated in the structure on the second end-cap assembly, the most advantageously in ensureing that shunting disk is relative to mandrel Radial equilibrium, and it is further ensured that the radial equilibrium of the film core being arranged on shunting disk, thus advantageously in film core at raw material Under the effect of fluid, axially loaded is uniform, it is to avoid each membrane filter unit of film core causes trace to tilt to become because axially loaded is uneven Shape.

The preferred structure of shunting disk when shunting disk is seated on the second end-cap assembly, for above-mentioned membrane filtration module It is that including disk body, the side of described disk body is provided with fluid inlet hole, and the axial end face of disk body is provided with Fluid-exiting apertures, described fluid Inlet hole and Fluid-exiting apertures connect and form the split channel of side influent stream body.During use, material flow enters shunting through fluid inlet hole Arrange to film core from Fluid-exiting apertures after passage.The split channel of side influent stream body, it is possible to use above material flow convection cell inlet hole The active force of disk body wall promotes disk body to drive mandrel axially movable, and compresses film core further.

Further, described Fluid-exiting apertures is along the axially extending formation outlet fluid of disk body, described fluid inlet hole edge Extend radially to formation fluid inlet channel, described fluid inlet channel and the fluid at described outlet fluid of disk body export Passage connects and forms the split channel that cross section is L-shaped.Such structure fabrication is convenient, and the shunting that cross section is L-shaped Material flow can also be played certain cushioning effect by passage, thus is conducive to a certain extent reducing material flow to film The pressure of core.

Preferably, for convenient processing, described fluid inlet channel is axially through the dish relative with Fluid-exiting apertures Body axial end, i.e. arranges breach at the edge part of disk body end face that is relative with Fluid-exiting apertures and that put, utilizes this breach and the second end Gap between cap assemblies can be used as described fluid inlet channel.

Further, described outlet fluid includes the different epimere output channel of internal diameter size and connects on described Section output channel and the hypomere output channel of fluid inlet channel.When the internal diameter of epimere output channel is less than hypomere output channel During internal diameter, to a certain extent, be conducive to increasing material flow to the active area of disk body wall thus to play and preferably drive work With.

Preferably, the internal diameter of described epimere output channel is more than the internal diameter of hypomere output channel.So when fluid is from fluid Input channel is when hypomere output channel enters epimere output channel, and the speed of fluid will reduce, and the relative pressure of fluid will Increased, advantageously ensure that film core has higher filter efficiency.

Preferably, described fluid inlet hole is domed, and its simple in construction is easy to make.

Preferably, described fluid inlet hole and Fluid-exiting apertures are uniform along the circumference of disk body.Such structure can guarantee that raw material stream Body is also uniformly distributed after entering film core, thus is conducive to improving the overall utilization rate of membrane filter unit in film core and ensureing that film core is subject to Power is uniform.

Preferably, described shunting disk is provided with the centre bore for being socketed with mandrel, and described fluid inlet hole and Fluid-exiting apertures are inclined Arrange from described centre bore.

Preferably, described shunting disk and mandrel are fixing to be connected, such as shunting disk and mandrel can be threaded connection fix or The modes such as splicing are used to fix.

Preferably, the attachment structure of above-mentioned shunting disk and mandrel, including shunting disk and mandrel, described shunting disk and mandrel it Between be formed with welded gaps and/or bevel for welding, at described welded gaps and/or bevel for welding, shunting disk is welded with mandrel It is integrated.Use the structure being welded to connect, it is possible to make fixing more firmly between shunting disk and mandrel, be more beneficial for shunting disk Drive Xia Dai moving mandrel to move towards the direction of axial compression film core at material flow, thus preferably ensure the axial compression of film core State.

Concrete, described shunting disk formed with mandrel in the most at least one end of described centre bore described welded gaps and/ Or bevel for welding.

Further, described mandrel is provided with ladder shaft part, described centre bore be provided with described ladder shaft part corresponding matching with Mandrel is formed the stage portion of axially location, and shunting disk forms welded gaps, shunting disk at the big end of described stage portion with mandrel Small end in described stage portion forms bevel for welding with mandrel.The outside diameter of described stage portion is more than the diameter of axle of ladder shaft part, So can play the effect of axially location and form described welded gaps, it is simple to welding.When reality is applied, shunting disk and core Axle is full weld at described welded gaps and bevel for welding, and weld seam must not be higher than mother metal.

For the welding tooling of described shunting disk Yu mandrel, including fixed part, described fixed part includes bracing frame；Spacing Portion, described limiting section include the first limit base that can coordinate with mandrel and be correspondingly arranged with described first limit base and can with point The second limit base that flow table coordinates, described first limit base and the second limit base be connected with support frame as described above respectively after described the One limit base, formed between the second limit base and bracing frame and be available for shunting disk and working place that mandrel is welded to connect.This welding Tool structure is simple, it is possible to controls the axiality of shunting disk and mandrel more accurately, and ensures that welding operation is convenient.

For simplifying structure further, and make the easier for installation of mandrel and shunting disk, described first limit base and second Limit base is separately positioned on the axial two ends of bracing frame.

Preferably, described second limit base include that the second installing plate, described second installing plate are provided with can be to described shunting disk The stopper slot axially positioned；Described first limit base includes the first installing plate and the limit shaft that can coordinate with described mandrel Set, described first installing plate is provided with the mandrel that can axially position limit shaft sleeve and can make to coordinate with limit shaft sleeve vertically Stepped hole through rear connection shunting disk.When actual installation, only described stepped hole and the axiality of stopper slot and chi need to be ensured Very little, and the precision of limit shaft sleeve can ensure shunting disk and mandrel install after axiality.By limit shaft sleeve and stopper slot Respectively to mandrel and the constraint of shunting disk, it is possible to the precision after guarantee shunting disk welds with mandrel is higher.

Preferably, described second installing plate is provided with corresponding with described stepped hole and at least as described working place vertically The through hole of a part.Offering of described through hole can to the greatest extent may be used on the basis of not affecting the stopper slot axially location to shunting disk Can guarantee that and be relatively large in diameter, in order to welding operation.

Preferably, support frame as described above includes the many support rod members being connected between the first limit base and the second limit base, To guarantee the stabilized structure of whole welding tooling.Additionally, support frame as described above can also use engraved structure, only structure need to met On the basis of Wen Gu, it is ensured that leave the working place being easy to welding.

Use above-mentioned welding tooling to be welded and fixed with mandrel by shunting disk, the structure of shunting disk and mandrel can be improved greatly Stability, it is to avoid use be flexibly connected and cause shunting disk compress under material flow drives produce during film core certain Rock or inclination etc..This welding tooling can use vertical or horizontal mode to put when reality is applied, vertical when using During storing, preferably it is placed on workbench.

Optionally, described floating member also includes elastic compensation element.Described elastic compensation element can provide balancing force, Avoid causing because of filtration retention mechanism that situation about loosening occurs, and due to when filtering the pressure of material flow be often in ripple Dynamic state, therefore elastic compensation element can also play the effect of bumper and absorbing shock.

Described elastic compensation element can be existing butterfly spring or wavy spring.

Further, described floating type hold-down mechanism is additionally provided with and can move towards the direction of axial compression film core at floating member Time, with the piston element that mandrel or the second end-cap assembly keep sliding connection；When described piston element and the second end cap group When part keeps sliding connection, piston element is arranged with floating member and/or mandrel linkage.Described piston element can play Sealing function.

Further, described piston element keeps sliding contact frictional fit with mandrel or the second end-cap assembly.

When film core pre-pressing structure has elastic compensation element, preferably elastic compensation element is located at piston element and second Between end-cap assembly.

Preferably, described piston element includes and mandrel or the piston head of the second end-cap assembly holding sliding connection, And the piston rod being connected with described piston head, described piston head is provided with the groove coordinated with described mandrel.Such structure is also Can location to mandrel very easily.Described groove is preferably threaded connection fixing with mandrel.

When described elastic compensation element is wavy spring, described wavy spring can be sheathed on described piston rod, when When film core pre-pressing structure is not provided with elastic compensation element, described piston rod can be made to tie with screw threads for fastening after the second end-cap assembly Structure is fixedly connected, and this screw threads for fastening structure is locking nut.

Optionally, described retention mechanism includes the many pull bars being connected between the first end-cap assembly and the second end-cap assembly Assembly, and respectively with described rod assembly and the screw threads for fastening structure that is connected through the mandrel of the first end-cap assembly.Logical Cross and described first end-cap assembly is set and the second end-cap assembly is capable of fixing shell and film core, pass through pull bar more simultaneously Many pull bars in assembly and screw threads for fastening structure, i.e. can ensure that shell, film core, the first end-cap assembly and the second end-cap assembly Between connectivity robustness.

Although the retention mechanism using rod assembly to combine with screw threads for fastening structure can make whole membrane filtration module have Good fastness, but in actual use, use multiple membrane filtration module to fill with other often due to sewage disposal Put and match, improve sewage treating efficiency and realize Automated condtrol, be therefore accomplished by many pull bars when application, and many Pull bar uses rustless steel to make, and cost is high, and fastness is not so good as carbon steel, uses carbon steel to make and the most easily corrodes, and it is distributed in The surrounding of whole membrane filtration module, makes the space occupied needed for whole membrane filtration module be greatly increased, to the peace of membrane filtration module Dress brings a lot of inconvenience.

Therefore, in actual applications, another kind of optional structure is, described first end-cap assembly and the second end-cap assembly quilt Sealing is pressed on enclosure.Described first end-cap assembly and the second end-cap assembly are by being arranged on film core, the first end-cap assembly Compress with the shell outside the second end-cap assembly and seal.The described retention mechanism of its film core pre-pressing structure preferably includes screw threads for fastening Structure, the end of the axial one end of mandrel through connecting described screw threads for fastening structure after the first end-cap assembly, mandrel axial another Hold and keep slipper seal to be connected with the second end-cap assembly.The membrane filtration module using this structure is non pull rod type structure, this nothing Drawbar structure refers to applicant's application, Publication No. CN104128094A, entitled " a kind of separates with end Inlet and outlet water Filter membrane post " patent documentation housing and the first end-cap assembly and the concrete attachment structure of the second end-cap assembly.Described shell can There is the inner chamber adapted with the first end-cap assembly and the second end-cap assembly, the first end-cap assembly and the second end-cap assembly be clamped In enclosure, and it is formed with cavity between wall and film core in the enclosure.The inwall of described shell and the first end-cap assembly and Can carry out sealing by wedge, sealing structure or other existing similar structures between the lateral wall of two end-cap assemblies and compress.

In actual applications, tunicle core pre-pressing structure axial compression is between the first end-cap assembly and the second end-cap assembly Membrane filter unit can use multiple existing structure；Preferably, described film core is by multiple films being axially sequentially stacked along mandrel Filter element forms, and such structure is not only installed easy to make, and when each membrane filter unit tunicle core pre-pressing structure is along axle After compressing, film core can be axially formed multiple filtration runner, thus obtains more preferable filter effect, and in film core size one On the premise of Ding, also help the quantity increasing membrane filter unit, accordingly increase filter area, improve filter efficiency, and make Filter effect is more preferable.

Preferably, described membrane filter unit includes flow guiding disc and the diaphragm that several Zhang Yici is socketed on mandrel, the most adjacent Two flow guiding discs between a diaphragm is installed；Each flow guiding disc includes flow guiding disc body and is located on described flow guiding disc body use In the first centre bore coordinated with mandrel, and deviate the first flow-guiding channel of described first centre bore, each flow guiding disc body The annular diversion cavity accommodating corresponding diaphragm, each annular diversion cavity and the first corresponding flow-guiding channel conducting it is additionally provided with on side；Respectively Diaphragm includes diaphragm body and being located at for the second centre bore coordinated with mandrel on described diaphragm body, and deviate this second Second flow-guiding channel of centre bore；Each diaphragm body includes upper diaphragm, lower diaphragm and the sky between upper diaphragm and lower diaphragm Chamber, described cavity and the conducting of the second centre bore；It is respectively equipped with close between each upper diaphragm with the inner edge of corresponding annular diversion cavity Seal structure, is respectively equipped with sealing structure between each lower diaphragm with the inner edge of corresponding annular diversion cavity；Described mandrel is provided with The flow-guiding structure that the second centre bore with each diaphragm turns on respectively, described flow-guiding structure and the cavity of each diaphragm and the second center Hole is constituted and the purification fluid conveying stream purifying fluid outlet conducting；First flow-guiding channel of each flow guiding disc and each diaphragm Second flow-guiding channel is sequentially communicated composition material flow conveying stream.

Further, if setting individual diaphragm projected area on the cross section of mandrel as A square metre, outside individual diaphragm Footpath is D rice, and the diaphragm quantity in this membrane filtration module is that N opens, then:

Wherein, 250≤B≤320.

Wherein diaphragm projected area on the cross section of mandrel is A square metre, and projected area here is at this membrane filtration The cross-sectional area of the second flow-guiding channel not including the second centre bore in assembly and make material flow and pass through diaphragm, it is found by the applicant that Between ratio between the number product of this projected area and diaphragm and the area of a circle constituted with diaphragm external diameter is 250 to 320 Time, all significantly improve compared to conventional film filter assemblies, the filter efficiency of the application membrane filtration module and filtration rejection, produce The beyond thought effect of those skilled in the art.Utilizing floating type hold-down mechanism, each membrane filter unit is carried out floating type On the basis of fastening, by selection and the combination of the several key parameters to diaphragm, it is more beneficial for ensureing that film core is at filter process In be in axial compression state all the time on the premise of, filter area can be significantly increased so that membrane filtration module filtration effect Rate is higher and filtration rejection is unexpected good.

Further, whenWherein, during 250≤B≤320, the external diameter of each diaphragm is 0.2 to 0.4 meter；Film Diaphragm quantity in filter assemblies is 125 to 180, preferably selects for one.

Described first end-cap assembly includes that the first ring flange and the first sealing plate, described second end-cap assembly include the second method Blue dish and the second sealing plate；Between described film core is held in described first sealing plate and the second sealing plate, the first sealing plate quilt Being held between film core and the first ring flange, the second sealing plate is held between film core and the second ring flange, and shell is fixed on Between first ring flange and the second ring flange, described mandrel is at least tightly connected with the first sealing plate；On described first ring flange It is additionally provided with and the material flow delivery outlet of described material flow conveying stream conducting, described material flow delivery outlet, material flow Input port and purification fluid outlet around the periphery setting of mandrel, are communicated with institute on the first ring flange on the first sealing plate State purify fluid conveying stream and purify fluid outlet apocenosis passage, be provided with in described shell by material flow delivery outlet with Material flow carries the first passage of the outfan conducting of stream and with material flow, material flow input port is carried stream Input conducting second channel.

Described apocenosis passage and horizontal plane angle are preferably in 5 °～60 °, and such structure can make discharge opeing effect more preferable.

The output purifying fluid in above-mentioned each membrane filtration module both can use the Publication No. applied for by applicant CN103657414A, entitled " with end Inlet and outlet water separating and filtering film post and feed liquid processing method " patent documentation disclosed in Have employed the drainage structure of hollow core shaft, it is possible to use the Application No. 201610226549.1 of applicant's application, entitled " film Filter assemblies " utility application in the drainage structure that have employed solid mandrel mentioned.

If described mandrel is solid shafting, between the most each first centre bore and the second centre bore are respectively and mandrel matching part is provided with Gap, this gap may be configured as 0.5 to 2 millimeter, and this gap can be as described flow-guiding structure.

Further, the lobe around this first centre bore circumferential array, phase it are provided with in the first centre bore of each flow guiding disc There is gap between adjacent lobe, the outside circle of described lobe contacts cooperation with described mandrel, and described gap is then as the first center Hole and the gap of mandrel matching part.

Further, the width in the gap between described adjacent lobe is 1～3 millimeter.

Arrange lobe both to carry out radially positioning to film core by mandrel, purification fluid can be allowed again to smoothly pass over First centre bore, this lobe can be the plate profile structure with rectified action.

Described material flow, after material flow input port inputs, flows to material flow conveying stream by second channel, Material flow is in this material flow conveying stream course of conveying, and material flow, after the split channel of shunting disk, can enter institute State in annular diversion cavity, flow between flow guiding disc and diaphragm, allow diaphragm that material flow is carried out abundant filtration treatment.At Jing Guo Material flow (or referred to as dope) after reason enters first passage, flows out film mistake after entering material flow delivery outlet along this passage Filter assembly.

Material flow is after diaphragm processes, and the purification fluid produced in the cavity on diaphragm body is along this cavity and institute State the purification fluid conveying stream that the second centre bore is constituted, by purifying fluid outlet discharge membrane filtration group after apocenosis passage Part.Because each annular diversion cavity turns on corresponding first flow-guiding channel, described material flow carry stream be with on flow guiding disc Annular diversion cavity connection.It is respectively equipped with sealing structure between each upper diaphragm with the inner edge of corresponding annular diversion cavity, It is respectively equipped with sealing structure between each lower diaphragm with the inner edge of corresponding annular diversion cavity, is to stop material flow to One centre bore and the flowing of the second centre bore direction, sealing structure here can be sealing ring.

Can be cracked on described flow guiding disc mouth, and diaphragm is provided with the breach adaptive with this sealing, and this sealing and breach are equal Form described first flow-guiding channel, the most just can realize above-mentioned material flow conveying stream, certainly, this material flow transportation flow Road is to connect with the annular diversion cavity on flow guiding disc.

Described flow guiding disc surface or annular diversion cavity end face or annular diversion cavity bottom surface open described sealing and breach, seam At mouth and breach, guide flow table two sides are turned up, are tilted respectively, are formed domatic, so include several along core due to membrane filter unit The axial flow guiding disc on mandrel and the diaphragm of being socketed in successively of axle, therefore material flow helically can be transported along material flow conveying stream Dynamic, to utilize each diaphragm to carry out abundant filtration treatment, thus reach good filter effect.

If described mandrel is hollow axle, the most described mandrel is hollow tubular, then be provided with respectively on the tube wall of described mandrel The through hole that second centre bore of diaphragm turns on mandrel inner chamber, now, described through hole is then as described flow-guiding structure, the pipe of mandrel Chamber is as apocenosis passage, and the axle head opening of mandrel is as purifying fluid outlet, and without sealing at the first ring flange and first Described purification fluid outlet and apocenosis passage it is respectively provided with on plate.Axial one end of described hollow tubular mandrel can be arranged to Enclosed construction or be welded to connect with plug.Material flow, after diaphragm processes, produces in the cavity on diaphragm body Purify the fluid purification fluid conveying stream along this cavity with the through hole composition of described second centre bore and mandrel, through mandrel Tube chamber after discharge membrane filtration module by the axle head opening of mandrel.

Further, each diaphragm is RO film or NF film.

RO is the abbreviation of English Reverse Osmosis membrane, and the Chinese meaning is reverse osmosis.The flowing of general water Mode is to be flowed to high concentration by low concentration, after water once pressurizes, will be by high concentration flow to low concentration, and that is so-called reverse osmosis is former Reason: owing to the aperture of RO film is 5/1000000ths (0.0001 microns) of hairline, general naked eyes cannot be seen, antibacterial, disease Poison is its 5000 times, and therefore, the only mineral ion of hydrone and the useful human body of part can pass through, other impurity and a huge sum of money Belong to and being discharged by waste pipe.The process of all desalinizations, and spaceman's waste water recycling device all uses the method, therefore RO Film is also known as external high-tech " artificial kidney ".The most both at home and abroad, the military civil area of medical science, all take top RO film to carry out height Molecular filtration.

NF film is NF membrane, and nanofiltration is a kind of pressure-driven membrane separating process between reverse osmosis and ultrafiltration, receives The pore diameter range of filter membrane is at several ran.Compared with other pressure-driven membrane separating process, occur later.NF membrane is big Many from reverse osmosis membrane derivation, such as CA, CTA film, aromatic polyamide composite membrane and sulfonated polyether sulfone film etc..

Preferably, described first end-cap assembly is positioned at mandrel upper end, and the second end-cap assembly is positioned at the lower end of mandrel.

It should be noted that described purification fluid outlet and apocenosis passage can also be arranged on the second end-cap assembly place End；Described material flow input port and material flow delivery outlet can also be arranged on the second end-cap assembly place end.

Further, described retention mechanism also includes the screw threads for fastening structure being located at described second ring flange lower end.

Further, the screw threads for fastening structure coordinated with described mandrel preferably includes the first preload piece and nut, and described One preload piece lower surface through the first ring flange and the first sealing plate upper surface contact compression, described first preload piece upper end to On through the first ring flange and and nut screw connection, described first preload piece upper end preferably employ double nut tighten top to reach into The purpose that one step is locking；The screw threads for fastening structure of the second ring flange lower end includes the second preload piece and nut, described second pretension Part is integrally provided in the lower section of the second ring flange, and the upper surface of the second preload piece contacts compression with the lower surface of the second ring flange, Screw lock is passed through between described second preload piece and the second ring flange.The screw threads for fastening structure coordinated with rod assembly is preferably Nut.

Described second ring flange and the second sealing plate can be fixed by screw threads for fastening structure, and this screw threads for fastening structure is preferably Screw.

Described first preload piece is preferably multidiameter structure, this big end of multidiameter structure and the contact of the first sealing plate, described Second preload piece is preferably disc structure.Wherein, to be preferably greater than first pre-for the contact area of the second preload piece and the second ring flange Tight part and the first sealing plate the spiral shell of contact area, the screw threads for fastening structure on such first sealing plate and the second ring flange lower end The pressure that stricture of vagina fastening structure produces, was conducive to providing more preferable pretightning force to film core along concentrating to mandrel week, and due to described Seal structure be located between each upper diaphragm with the inner edge of corresponding annular diversion cavity, therefore such structure can also make upper diaphragm, Sealing property between lower diaphragm with the inner edge of corresponding annular diversion cavity is more preferable.

Below in conjunction with the detailed description of the invention of embodiment, foregoing of the present utility model is remake the most specifically Bright.But this should not being interpreted as, the scope of the above-mentioned theme of this utility model is only limitted to Examples below.New without departing from this practicality In the case of the above-mentioned technological thought of type, the various replacements made according to ordinary skill knowledge and customary means or change, all Should be included in the range of this utility model.

Accompanying drawing explanation

Fig. 1 is the first structure of the membrane filtration module in this utility model detailed description of the invention with film core pre-pressing structure Schematic diagram.

Fig. 2 is the second structure of the membrane filtration module in this utility model detailed description of the invention with film core pre-pressing structure Schematic diagram.

Fig. 3 is the third structure of the membrane filtration module in this utility model detailed description of the invention with film core pre-pressing structure Schematic diagram.

Fig. 4 is the 4th kind of structure of the membrane filtration module in this utility model detailed description of the invention with film core pre-pressing structure Schematic diagram.

Fig. 5 is the 5th kind of structure of the membrane filtration module in this utility model detailed description of the invention with film core pre-pressing structure Schematic diagram.

Fig. 6 is the schematic top plan view of shunting disk in Fig. 1 and Fig. 4.

Fig. 7 is the schematic front view of shunting disk in Fig. 2, Fig. 3 and Fig. 5.

Fig. 8 is the elevational schematic view of shunting disk in Fig. 2, Fig. 3 and Fig. 5.

Fig. 9 be in Fig. 1～Fig. 5 the welding tooling of shunting disk and mandrel in a kind of structural representation used under state Figure.

Figure 10 is the structural representation of the second limit base in Fig. 9.

Figure 11 is the structural representation of piston element in Fig. 1 and Fig. 2.

Figure 12 is the structural representation of piston element in Fig. 3.

Figure 13 is the schematic top plan view of the first end-cap assembly in Fig. 1～Fig. 5.

Figure 14 be in Figure 13 the A-A of the first end-cap assembly to cross-sectional schematic.

Figure 15 is two flow guiding discs and the film core decomposing schematic representation of a diaphragm composition in Fig. 1～Fig. 5.

Figure 16 is the cross-sectional schematic of the film core of two flow guiding discs and a diaphragm composition in Fig. 1～Fig. 5.

Detailed description of the invention

Embodiment 1:

As shown in Fig. 1, Fig. 6, Fig. 9～Figure 11, Figure 13～Figure 16, membrane filtration module, including shell 100, mandrel 200, film Core the 300, first end-cap assembly the 410, second end-cap assembly 420, film core pre-pressing structure and material flow input port 510 and purification Fluid outlet 520, described film core 300 is set on mandrel 200 and is made up of multiple membrane filter units, by these membrane filtration lists The film core 300 of unit's composition is configured to axial compression state by film core pre-pressing structure and is placed in described first end-cap assembly 410 And between the second end-cap assembly 420, described shell 100 is arranged on the outside of film core 300 and connects described first end cap group respectively Part 410 and the second end-cap assembly 420；During filtration, material flow is after described material flow input port 510 flows into, through with second It is backward with the first end-cap assembly 410 phase that film core 300 axial end that end-cap assembly 420 is put relatively passes sequentially through each membrane filter unit To and put film core 300 axial end motion, filtered purification fluid is discharged from described purification fluid outlet 520；Described film Core pre-pressing structure has the floating type hold-down mechanism moved when filtering towards the direction of axial compression film core 300.

Described floating type hold-down mechanism includes film core 300 axial compression in the first end-cap assembly 410 and the second end cap group Retention mechanism between part 420, and be located between the second end-cap assembly 420 and film core 300 and can filter time by raw material stream Body drive and towards axial compression film core 300 direction move floating member.

Described floating member on the one hand can be on the premise of retention mechanism applies axial pre tightening force to film core 300, in mistake Driven by material flow during filter and compress film core 300 further, make film core 300 remain preferable axial compression state, and Compensating action is played in the compression that membrane filter unit produces vertically trace when filtering, it is to avoid because film core 300 is filtering During produce the compression of trace vertically because of its membrane filter unit, and cause the feelings that the pretightning force of retention mechanism weakens Condition；The most described floating member also can share the material flow pressure to film core 300, thus can subtract to a certain extent The light active force to film core 300 such as filtration pressure difference, material flow impact, further reduces over the pretension of retention mechanism during filter Power impaired risks coefficient.

Described floating member includes the shunting disk 610 being sheathed on mandrel 200.

Described film core 300 is set on mandrel 200 and by multiple membrane filter unit groups being axially sequentially stacked along mandrel 200 Become；Described membrane filter unit includes flow guiding disc 310 and the diaphragm 320 that several Zhang Yici is socketed on mandrel 200, the most adjacent two Open, between flow guiding disc 310, a diaphragm 320 is installed；Each flow guiding disc 310 includes flow guiding disc body and is located at described flow guiding disc originally For the first centre bore 311 coordinated with mandrel 200 on body, and deviate the first flow-guiding channel of described first centre bore 311 312, the side of each flow guiding disc body is additionally provided with the annular diversion cavity 313 accommodating corresponding diaphragm 320, each annular diversion cavity 313 Turn on the first corresponding flow-guiding channel 312；Each diaphragm 320 include diaphragm body and be located on described diaphragm body for core The second centre bore 321 that axle 200 coordinates, and deviate the second flow-guiding channel 322 of this second centre bore 321；Each diaphragm body Including upper diaphragm 323, lower diaphragm 324 and the cavity 325 between upper diaphragm 323 and lower diaphragm 324, described cavity 325 with Second centre bore 321 turns on；It is respectively equipped with sealing between each upper diaphragm 323 with the inner edge 314 of corresponding annular diversion cavity 313 Structure 330, is respectively equipped with sealing structure 330 between each lower diaphragm 324 and the inner edge 314 of corresponding annular diversion cavity 313；Institute State mandrel 200 be provided with respectively with each diaphragm 320 second centre bore 321 conducting flow-guiding structure 201, described flow-guiding structure 201 are constituted and the purification fluid purifying fluid outlet 520 conducting with the cavity 325 of each diaphragm 320 and the second centre bore 321 Conveying stream 521；First flow-guiding channel 312 of each flow guiding disc 310 is sequentially communicated with the second flow-guiding channel 322 of each diaphragm 320 Constitute material flow conveying stream 511；Described shunting disk 610 is communicated with described material flow input port 510 and material flow The split channel of conveying stream 511.

If setting individual diaphragm 320 projected area on the cross section of mandrel 200 as A square metre, outside individual diaphragm 320 Footpath is D rice, and diaphragm 320 quantity in this membrane filtration module is that N opens, then:

Wherein, 250≤B≤320.

Wherein the diaphragm 320 projected area on the cross section of mandrel 200 is A square metre, and projected area here is at this The second flow-guiding channel 322 transversal not including the second centre bore 321 in membrane filtration module and make material flow pass through diaphragm 320 Area, it is found by the applicant that between the number product of this projected area and diaphragm 320 and the area of a circle constituted with diaphragm 320 external diameter Ratio between 250 to 320 time, compared to conventional film filter assemblies, the filter efficiency of the application membrane filtration module and filtration Rejection all significantly improves, and creates the beyond thought effect of those skilled in the art.Utilizing floating type hold-down mechanism pair On the basis of each membrane filter unit carries out floating type fastening, by selection and the combination of the several key parameters to diaphragm 320, more On the premise of advantageously ensuring that film core 300 is in axial compression state in filter process all the time, filter area can be significantly increased, So that the filter efficiency of membrane filtration module is higher and it is unexpected good to filter rejection.

In the present embodiment, the overall cylindrical structure of described film core 300, so flow guiding disc 310 here can be disc Structure, the described preferred shape of diaphragm 320 also should be suitable with the shape of this flow guiding disc 310, the disc knot of this flow guiding disc 310 Structure can be that edge extends projection to both sides, and the tangent plane making this flow guiding disc 310 is I-shaped, the most just shape on flow guiding disc 310 Become above-mentioned annular diversion cavity 313.

The membrane filtration module of the present embodiment includes several being axially socketed in leading on mandrel 200 successively along mandrel 200 Flow table 310 and diaphragm 320, the number of flow guiding disc 310 here can be more than 148, and the number of diaphragm 320 can be 147 More than individual, described diaphragm 320 external diameter is 0.2 to 0.4 meter.Described upper diaphragm 323 and lower diaphragm 324 are RO film or NF film.

Described first end-cap assembly 410 includes the first ring flange 411 and the first sealing plate 412, described second end-cap assembly 420 include the second ring flange 421 and the second sealing plate 422；Described film core 300 is held in described first sealing plate 412 and Between two sealing plates 422, the first sealing plate 412 is held between film core 300 and the first ring flange 411, the second sealing plate 422 Being held between film core 300 and the second ring flange 421, shell 100 is fixed on the first ring flange 411 and the second ring flange 421 Between, described mandrel 200 is tightly connected with the first sealing plate 412；It is additionally provided with and described raw material stream on described first ring flange 411 The material flow delivery outlet 530 of body conveying stream 511 conducting, described material flow delivery outlet 530, material flow input port 510 Arranging with purifying the fluid outlet 520 periphery around mandrel 200 on the first ring flange 411, the first sealing plate 412 is provided with Connect described purification fluid conveying stream 521 and purify the apocenosis passage 522 of fluid outlet 520.Described apocenosis passage 522 with Horizontal plane angle is 20 °～40 °.

It is provided with the outfan conducting of material flow delivery outlet 530 with material flow conveying stream 511 in described shell 100 First passage and by the second channel of material flow input port 510 with the input conducting of material flow conveying stream 511.

Mandrel 200 described in the present embodiment is solid shafting, the first centre bore 311 and the second centre bore 321 respectively with mandrel 200 matching parts are provided with gap, and this gap may be configured as 1 to 1.5 millimeter, and this gap can be as described flow-guiding structure 201.Described First end-cap assembly 410 or the second end-cap assembly 420 are provided with cloth opening, this cloth opening and the outlet of described second channel End connection (concrete structure here refers to the structure in CN103657414A), also by material flow conveying stream 511 with First passage connects, and after mandrel 200 is set to solid circular shafts, can bring whole membrane filtration module higher pressure Property, so relative to hollow shaft member, can increase on the basis of the effective filtration area not changing, even expanding film core 300 Add the number of membrane filter unit, improve the filtering efficiency of this membrane filtration module.

It is provided with the lobe 315 around this first centre bore 311 circumferential array in first centre bore 311 of each flow guiding disc 310, There is gap between adjacent lobe 315, the outside circle of described lobe 315 contacts cooperation with described mandrel 200, and described gap is then made It it is the gap of the first centre bore 311 and mandrel 200 matching part.The width in the gap between described adjacent lobe 315 be 1.5～ 2.5 millimeter.This lobe 315 is the plate profile structure with rectified action.Described shunting disk 610 is unsettled with the second sealing plate 422 to be set Put.

Described shunting disk 610 is provided with the centre bore 615 for being socketed with mandrel 200, during the deviation of described split channel is described Central hole 615 is also evenly distributed, and the Fluid-exiting apertures 612 of described split channel is axially through setting.

Above-mentioned shunting disk 610 and the attachment structure of mandrel 200, including shunting disk 610 and mandrel 200, described shunting disk 610 And it is formed with welded gaps and/or bevel for welding between mandrel 200, shunting disk at described welded gaps and/or bevel for welding 610 are welded as a whole with mandrel 200.Described mandrel 200 is provided with ladder shaft part, and described centre bore 615 is provided with and described multidiameter Section corresponding matching to form the stage portion of axially location to mandrel 200, and shunting disk 610 is held and mandrel the big of described stage portion 200 form welded gaps, and shunting disk 610 forms bevel for welding at the small end of described stage portion with mandrel 200.

For the welding tooling of above-mentioned shunting disk 610 with mandrel 200, including fixed part, described fixed part includes bracing frame 710；Limiting section, described limiting section include the first limit base 720 that can coordinate with mandrel 200 and with described first limit base 720 the second limit bases 730 being correspondingly arranged and coordinating with shunting disk 610, described first limit base 720 and the second limit base 730 be connected with support frame as described above 710 respectively after between described first limit base the 720, second limit base 730 and bracing frame 710 Formed and be available for the working place that shunting disk 610 is welded to connect with mandrel 200.

Described first limit base 720 and the second limit base 730 are separately positioned on the axial two ends of bracing frame 710.Described Two limit bases 730 include that the second installing plate 731, described second installing plate 731 are provided with can carry out described shunting disk 610 axially determining The stopper slot 732 of position；Described first limit base 720 includes the first installing plate 721 and the limit shaft that can coordinate with described mandrel 200 Set 722, described first installing plate 721 is provided with vertically and can axially position limit shaft sleeve 722 and can make and limit shaft sleeve The mandrel 200 that 722 coordinate is through the stepped hole 723 of rear connection shunting disk 610.

Described second installing plate 731 is provided with corresponding with described stepped hole 723 and at least as described working place vertically The through hole 733 of a part.Support frame as described above 710 includes that many are connected between the first limit base 720 and the second limit base 730 Support rod member.Threaded fastening can be used between described support rod member and the first installing plate 721 and the second installing plate 731. Use above-mentioned welding tooling can control the axiality of shunting disk 610 and mandrel 200 more accurately, and ensure welding operation Convenient, the structural stability after shunting disk 610 welds with mandrel 200 is good, can be prevented effectively from employing and be flexibly connected and cause shunting Dish 610 compresses under material flow drives and produces certain rocking or inclination etc. during film core 200.

Described floating type hold-down mechanism is additionally provided with and can be compressed axially direction in shunting disk 610 band moving mandrel 200 along film core 300 During motion, with the piston element 800 that the second sealing plate 422 keeps sliding connection, described piston element 800 includes and second Sealing plate 422 keeps the piston head 810 of sliding connection, and the piston rod 820 being connected with described piston head 810, described Piston head 810 is provided with and is threaded connection, with described mandrel 200, the groove 811 coordinated.Described floating member also includes being located at institute Stating the elastic compensation element 900 between piston element 800 and the second ring flange 421, described elastic compensation element 900 is waveform bullet Spring, described wavy spring is sheathed on described piston rod 820.Described retention mechanism includes that many are connected to the first ring flange 411 And the rod assembly 620 between the second ring flange 421, and respectively with described rod assembly 620 and through the first sealing plate 412 The screw threads for fastening structure that is connected of mandrel 200.Described retention mechanism also includes being located at described second ring flange 421 lower end Screw threads for fastening structure.

The screw threads for fastening structure coordinated with described mandrel 200 includes the first preload piece 631 and nut, the second ring flange 421 The screw threads for fastening structure of lower end includes the second preload piece 632 and nut；Described first preload piece 631 lower surface passes the first flange Dish 411 contacts compression with the upper surface of the first sealing plate 422, and described first preload piece 631 upper end is upward through the first ring flange 411 and and nut screw connection, described first preload piece 631 upper end uses double nut to tighten to reach the most locking mesh to top 's；Described second preload piece 632 is integrally provided in the lower section of the second ring flange 421, the upper surface and second of the second preload piece 632 The lower surface contact of ring flange 421 compresses, and passes through screw lock between described second preload piece 632 and the second ring flange 421.With The screw threads for fastening structure that rod assembly 620 coordinates is nut.Described second ring flange 421 and the second sealing plate 422 can pass through spiral shell Stricture of vagina fastening structure is fixed, and this screw threads for fastening structure is screw.

Described first preload piece 631 is multidiameter structure, and this big end of multidiameter structure and the first sealing plate 412 contact, institute Stating the second preload piece 632 is disc structure.Wherein, the contact area of the second preload piece 632 and the second ring flange 421 is more than first Preload piece 631 and the contact area of the first sealing plate 412, the screw threads for fastening structure on such first sealing plate 412 and the second method The pressure that the screw threads for fastening structure of blue dish 421 lower end produces is concentrated to 200 weeks edges of mandrel, is conducive to providing more preferable to film core 300 Pretightning force, and owing to described sealing structure 330 is located at the inner edge of each upper diaphragm 323 and corresponding annular diversion cavity 313 Between 314, therefore such structure can also make the inner edge 314 of upper diaphragm 323, lower diaphragm 324 and corresponding annular diversion cavity 313 Between sealing property more preferable.

Described material flow, after material flow input port 510 inputs, flows to material flow transportation flow by second channel Road 511, material flow this material flow conveying stream 511 course of conveying in, material flow after the split channel of shunting disk, Can enter in described annular diversion cavity 313, flow between flow guiding disc 310 and diaphragm 320, allow diaphragm 320 that material flow to be entered The abundant filtration treatment of row.Material flow (or referred to as dope) after treatment enters first passage, enters raw material along this passage Membrane filtration module is flowed out after fluid outlet 530.

Material flow is after diaphragm 320 processes, and the purification fluid produced in the cavity 325 on diaphragm body is along this sky The purification fluid conveying stream 521 that chamber 325 and described second centre bore 321 are constituted, by purifying fluid after apocenosis passage 522 Delivery outlet 520 discharges membrane filtration module.Because each annular diversion cavity 313 turns on the first corresponding flow-guiding channel 312, described former Stream body conveying stream 511 is to connect with the annular diversion cavity 313 on flow guiding disc 310.At each upper diaphragm 323 and corresponding ring Sealing structure 330, each lower diaphragm 324 and corresponding annular diversion cavity it is respectively equipped with between the inner edge 314 of shape diversion cavity 313 It is respectively equipped with sealing structure 330 between the inner edge 314 of 313, is to stop material flow to the first centre bore 311 and second Flowing in centre bore 321 direction, sealing structure 330 here can be sealing ring.

Can be cracked on this flow guiding disc 310 mouth, the breach that diaphragm 320 is provided with and this sealing is adaptive, this sealing and splitting Mouth is respectively formed described first flow-guiding channel 312, the most just can realize above-mentioned material flow conveying stream 511, certainly, this raw material Fluid conveying stream 511 is to connect with the annular diversion cavity 313 on flow guiding disc 310.

Described sealing and splitting is opened at flow guiding disc 310 surface or annular diversion cavity 313 end face or annular diversion cavity 313 bottom surface Mouthful, at sealing and breach, guide flow table 310 two sides are turned up, are tilted respectively, are formed domatic, so include due to membrane filter unit Several flow guiding discs 310 being axially socketed in successively on mandrel 200 along mandrel 200 and diaphragm 320, so material flow can be along former Stream body conveying stream 511 helically moves, and to utilize each diaphragm to carry out abundant filtration treatment, thus reaches well to filter effect Really.In Figure 15, the direction of arrow is material flow flow direction.

Embodiment 2:

Embodiment 2 is roughly the same with the membrane filtration module structure of embodiment 1, but difference is: purify stream in the present embodiment Body output use applicant application Publication No. CN103657414A, entitled " with end Inlet and outlet water separating and filtering film post and Its feed liquid processing method " patent documentation disclosed in the drainage structure of hollow core shaft 200.That is: described mandrel 200 is in hollow pipe Shape, mandrel 200 is provided with the through hole (not shown) of the second centre bore 321 of each diaphragm 320 with the conducting of mandrel 200 inner chamber, this Time, described through hole is then as described flow-guiding structure 201, and the tube chamber of mandrel 200 is opened as apocenosis passage 522, the axle head of mandrel 200 Mouthful as purify fluid outlet 520, and without be respectively provided with on the first ring flange 411 and the first sealing plate 412 described only Change fluid outlet 520 and apocenosis passage 522.

Axial one end of described hollow tubular mandrel 200 can be arranged to enclosed construction or be welded to connect with plug.Former Stream body is after diaphragm 320 processes, and the purification fluid produced in the cavity 325 on diaphragm body is along this cavity 325 and institute State the purification fluid conveying stream 521 that the through hole of the second centre bore 321 and mandrel 200 is constituted, after the tube chamber of mandrel 200 Membrane filtration module is discharged by the axle head opening of mandrel 200.

Embodiment 3:

As shown in Fig. 2, Fig. 7 and Fig. 8, embodiment 3 is roughly the same with the membrane filtration module structure of embodiment 1, but difference exists In: described shunting disk 610 is seated on the second sealing plate 422 of the second end-cap assembly 420, and such structure is advantageously in guarantor Card shunting disk 610 keeps radial equilibrium relative to mandrel 200, and is further ensured that the film core 300 that is arranged on shunting disk 610 Radial equilibrium, thus advantageously uniform in film core 300 axially loaded under the effect of material flow, it is to avoid and film core 300 is because of axle Trace inclination and distortion is caused to unbalance stress.And the split channel of side influent stream body, it is possible to use material flow convection cell enters The active force of the disk body wall above hole 611 promotes disk body to drive mandrel 200 axially movable, and compresses film core 300 further.

This shunting disk 610 includes that disk body, the side of described disk body are provided with fluid inlet hole 611, and the axial end face of disk body sets There are Fluid-exiting apertures 612, described fluid inlet hole 611 and Fluid-exiting apertures 612 to connect and form the split channel of side influent stream body.Use Time, material flow after fluid inlet hole 611 enters split channel from Fluid-exiting apertures 612 row to film core.Described fluid inlet hole 611 in Arch.Fluid inlet hole 611 and Fluid-exiting apertures 612 are uniform along the circumference of disk body.

Described Fluid-exiting apertures 612 is along the axially extending formation outlet fluid 614 of disk body, described fluid inlet hole 611 edge Disk body extend radially at described outlet fluid 614 formed fluid inlet channel 613, described fluid inlet channel 613 Connect with outlet fluid 614 and form the split channel that cross section is L-shaped.Such structure fabrication is convenient, and transversal Material flow can also be played certain cushioning effect by the L-shaped split channel in face, thus is conducive to a certain extent subtracting The little material flow pressure to film core 300.

Described fluid inlet channel 613 axially penetrates through the disk body axial end relative with Fluid-exiting apertures 612, is i.e. going out with fluid The edge part of the disk body end face that hole 612 is put relatively arranges breach 616, utilizes between this breach 616 and second sealing plate 422 Gap can be used as described fluid inlet channel 613.

Described outlet fluid 614 includes the different epimere output channel of internal diameter size and connects the output of described epimere Passage and the hypomere output channel of fluid inlet channel 613.Wherein, the internal diameter of described epimere output channel is logical more than hypomere output The internal diameter in road.So when fluid enters epimere output channel from fluid inlet channel 613 through hypomere output channel, the speed of fluid Degree will reduce, and the relative pressure of fluid will increased, and advantageously ensure that film core 300 has higher filter efficiency.

Described shunting disk 610 is provided with the centre bore 615 for being socketed with mandrel 200, and described fluid inlet hole 611 and fluid go out Hole 612 is deviateed described centre bore 615 and is arranged.Membrane filtration module in the present embodiment in a non-operative state, its piston element 800 The upper surface of middle piston head 810 is not higher than the upper surface of the second sealing plate 422.

This shunting disk 610 and mandrel 200 can also use in embodiment 1 welding tooling as shown in Figure 9 and Figure 10 to carry out Welding.

Embodiment 4:

As shown in Fig. 3 and Figure 12, embodiment 4 is roughly the same with the structure of embodiment 3, and described shunting disk 610 is seated in On second sealing plate 422 of two end-cap assemblies 420, but difference is: in described film core pre-pressing structure, floating member does not include bullet Property compensating element, 900.Sliding connection, piston head is kept between piston head 810 and the mandrel 200 of described piston element 800 It is preferably provided with potted component between 810 and mandrel 200 and keeps sliding contact frictional fit.Further, the present embodiment is not provided with Second preload piece 632, utilizes the piston rod 810 second sealing plate 422 He through the second end-cap assembly 420 of piston element 800 Being connected with screw threads for fastening respective outer side edges after second ring flange 421, this screw threads for fastening structure is locking nut, described locking nut with The lower surface contact of the second ring flange 421 compresses.

Embodiment 5:

As shown in Figure 4, embodiment 5 is roughly the same with the membrane filtration module structure of embodiment 1, but difference is: described the It is internal that one end-cap assembly 410 and the second end-cap assembly 420 are pressed on shell 100 by sealing, the most described first end-cap assembly 410 He Second end-cap assembly 420 is by being arranged on the shell outside film core the 300, first end-cap assembly 410 and the second end-cap assembly 420 100 compress sealing.This membrane filtration module is without Tiebar structure, and this non pull rod type structure specifically refers to applicant's application, Publication No. CN104128094A, entitled " a kind of with end Inlet and outlet water separating and filtering film post " patent documentation housing 100 with First end-cap assembly 410 and the attachment structure of the second end-cap assembly 420.Described shell 100 have with the first end-cap assembly 410 and The inner chamber that second end-cap assembly 420 adapts, the first end-cap assembly 410 and the second end-cap assembly 420 are clamped in shell 100 Portion, and it is formed with cavity between shell 100 inwall and film core 200.The inwall of described shell 100 and the first end-cap assembly 410 And second end-cap assembly 420 lateral wall between can by wedge, seal structure or other existing similar structures and seal Compress.

The described retention mechanism of its film core pre-pressing structure includes that screw threads for fastening structure, the end of the axial one end of mandrel 200 are worn Connecting described screw threads for fastening structure after crossing the first sealing plate 412, the axial other end and second sealing plate 422 of mandrel 200 keep Slipper seal connects.Being provided with potted component between described mandrel 200 and the second sealing plate 422, described potted component is the closeest Seal.Its floating type hold-down mechanism does not include that piston element 800, described floating member do not include elastic compensation element 900.

Described second ring flange 421 lower end can be not provided with described second preload piece 632, and the second ring flange 421 is close with second Shrouding 422 is fixed by screw threads for fastening structure, and this screw threads for fastening structure is screw.

Material flow is after material flow input port 510 inputs, and the cavity between shell 100 and film core 200 can be as institute Stating second channel, flow to material flow conveying stream 511 for material flow, material flow is at this material flow conveyance fluid 511 In course of conveying, material flow, after the split channel of shunting disk, can enter in described annular diversion cavity 313, at flow guiding disc 310 And flow between diaphragm 320, allow diaphragm 320 that material flow is carried out abundant filtration treatment.Wherein, material flow is through shunting During dish 610, shunting disk can be driven to drive the mandrel being welded as a whole therewith to move upward, thus compress film further Core, it is to avoid the first preload piece 631 being located on the first sealing plate 412 and nut occur to loosen.Material flow after treatment (or referred to as dope) enters first passage, flows out membrane filtration module after entering material flow delivery outlet 530 along this passage.

Embodiment 6:

Embodiment 6 is roughly the same with the membrane filtration module structure of embodiment 5, and limits the axle of described mandrel 200 further Sliding contact frictional fit is kept to the other end and the second sealing plate 422.

Embodiment 7:

Embodiment 7 is roughly the same with the membrane filtration module structure of embodiment 5, but difference is: described floating type compacting machine Structure be additionally provided with can shunting disk 610 band moving mandrel 200 along film core 300 be compressed axially direction move time, protect with the second sealing plate 422 Holding the piston element 800 of sliding connection, described piston element 800 includes keeping, with the second sealing plate 422, the company of being slidably matched The piston head 810 connect, and the piston rod 820 being connected with described piston head 810, described piston head 810 is provided with and described mandrel 200 grooves 811 being threaded connection cooperation.

Described floating member also includes the elastic compensating unit being located between described piston element 800 and the second ring flange 421 Part 900, described elastic compensation element 900 is wavy spring, and described wavy spring is sheathed on described piston rod 820.

Described retention mechanism may also include the screw threads for fastening structure being located at described second ring flange 421 lower end.This screw thread is tight Fixing structure includes the second preload piece 632 and nut；Described second preload piece 632 is integrally provided in the lower section of the second ring flange 421, The upper surface of the second preload piece 632 contacts compression, described second preload piece 632 and second with the lower surface of the second ring flange 421 Screw lock is passed through between ring flange 421.Described second ring flange 421 and the second sealing plate 422 can pass through screw threads for fastening structure Fixing, this screw threads for fastening structure is screw.

Described second preload piece 632 is disc structure.Wherein, the second preload piece 632 and contact surface of the second ring flange 421 Long-pending more than the first preload piece 631 and contact area of the first sealing plate 412, the screw threads for fastening knot on such first sealing plate 412 The pressure that the screw threads for fastening structure of structure and the second ring flange 421 lower end produces is concentrated to 200 weeks edges of mandrel, is conducive to film core 300 provide more preferable pretightning force, and owing to described sealing structure 330 is located at each upper diaphragm 323 and corresponding annular diversion cavity Between the inner edge 314 of 313, therefore such structure can also make upper diaphragm 323, lower diaphragm 324 and corresponding annular diversion cavity 313 Inner edge 314 between sealing property more preferable.

In the present embodiment similar to Example 1 to arranging of piston element 800 and elastic compensation element 900.

Embodiment 8:

As shown in Fig. 5, Fig. 7 and Fig. 8, embodiment 8 is roughly the same with the membrane filtration module structure of embodiment 5, but difference exists In: described shunting disk 610 is seated on the second sealing plate 422 of the second end-cap assembly 420, and such structure is advantageously in guarantor Card shunting disk 610 keeps radial equilibrium relative to mandrel 200, and is further ensured that the film core 300 that is arranged on shunting disk 610 Radial equilibrium, thus advantageously uniform in film core 300 axially loaded under the effect of material flow, it is to avoid and film core 300 is because of axle Inclination and distortion is caused to unbalance stress.And the split channel of side influent stream body, it is possible to use material flow convection cell inlet hole 611 The active force of the disk body wall of top promotes disk body to drive mandrel 200 axially movable, and compresses film core 300 further.

This shunting disk 610 includes that disk body, the side of described disk body are provided with fluid inlet hole 611, and the axial end face of disk body sets There are Fluid-exiting apertures 612, described fluid inlet hole 611 and Fluid-exiting apertures 612 to connect and form the split channel of side influent stream body.Use Time, material flow after fluid inlet hole 611 enters split channel from Fluid-exiting apertures 612 row to film core.Described fluid inlet hole 611 in Arch.Fluid inlet hole 611 and Fluid-exiting apertures 612 are uniform along the circumference of disk body.

Described Fluid-exiting apertures 612 is along the axially extending formation outlet fluid 614 of disk body, described fluid inlet hole 611 edge Disk body extend radially at described outlet fluid 614 formed fluid inlet channel 613, described fluid inlet channel 613 Connect with outlet fluid 614 and form the split channel that cross section is L-shaped.Such structure fabrication is convenient, and transversal Material flow can also be played certain cushioning effect by the L-shaped split channel in face, thus is conducive to a certain extent subtracting The little material flow pressure to film core 300.

Described fluid inlet channel 613 axially penetrates through the disk body axial end relative with Fluid-exiting apertures 612, is i.e. going out with fluid The edge part of the disk body end face that hole 612 is put relatively arranges breach 616, utilizes between this breach 616 and second sealing plate 422 Gap can be used as described fluid inlet channel 613.

Described outlet fluid 614 includes the different epimere output channel of internal diameter size and connects the output of described epimere Passage and the hypomere output channel of fluid inlet channel 613.Wherein, the internal diameter of described epimere output channel is logical more than hypomere output The internal diameter in road.So when fluid enters epimere output channel from fluid inlet channel 613 through hypomere output channel, the speed of fluid Degree will reduce, and the relative pressure of fluid will increased, and advantageously ensure that film core 300 has higher filter efficiency.

Described shunting disk 610 is provided with the centre bore 615 for being socketed with mandrel 200, and described fluid inlet hole 611 and fluid go out Hole 612 is deviateed described centre bore 615 and is arranged.

Shunting disk 610 and mandrel 200 can also use in embodiment 1 weldering as shown in Figure 9 and Figure 10 in the present embodiment Connect frock to weld.

Embodiment 9:

Embodiment 9 is roughly the same with the membrane filtration module structure of embodiment 8, but difference is: described floating type compacting machine Structure be provided with can shunting disk 610 band moving mandrel 200 along film core 300 be compressed axially direction move time, keep with the second sealing plate 422 The piston element 800 of sliding connection, described piston element 800 includes keeping sliding connection with the second sealing plate 422 Piston head 810, and the piston rod 820 being connected with described piston head 810, described piston head 810 is provided with and described mandrel 200 It is threaded connection the groove 811 of cooperation.

Elastic compensation element 900, described elastic compensating unit it is provided with between described piston element 800 and the second ring flange 421 Part 900 is wavy spring, and described wavy spring is sheathed on described piston rod 820.

Described retention mechanism may also include the screw threads for fastening structure being located at described second ring flange 421 lower end.This screw thread is tight Fixing structure includes the second preload piece 632 and nut；Described second preload piece 632 is integrally provided in the lower section of the second ring flange 421, The upper surface of the second preload piece 632 contacts compression, described second preload piece 632 and second with the lower surface of the second ring flange 421 Screw lock is passed through between ring flange 421.Described second ring flange 421 and the second sealing plate 422 can pass through screw threads for fastening structure Fixing, this screw threads for fastening structure is screw.

Described second preload piece 632 is disc structure.Wherein, the second preload piece 632 and contact surface of the second ring flange 421 Long-pending more than the first preload piece 631 and contact area of the first sealing plate 412, the screw threads for fastening knot on such first sealing plate 412 The pressure that the screw threads for fastening structure of structure and the second ring flange 421 lower end produces is concentrated to 200 weeks edges of mandrel, is conducive to film core 300 provide more preferable pretightning force, and owing to described sealing structure 330 is located at each upper diaphragm 323 and corresponding annular diversion cavity Between the inner edge 314 of 313, therefore such structure can also make upper diaphragm 323, lower diaphragm 324 and corresponding annular diversion cavity 313 Inner edge 314 between sealing property more preferable.

Membrane filtration module in the present embodiment in a non-operative state, the upper surface of piston head 810 in its piston element 800 The not higher than upper surface of the second sealing plate 422.

In the present embodiment, the setting to piston element 800 and elastic compensation element 900 can be similar to Example 1.

Embodiment 10:

Embodiment 10 is roughly the same with the structure of the membrane filtration module of embodiment 9, and described shunting disk 610 is seated in the second end On second sealing plate 422 of cap assemblies 420, but difference is: in described film core pre-pressing structure, floating member does not include elastic benefit Repay element 900.The piston head 810 of described piston element 800 keeps slipper seal to be connected with mandrel 200.Further, in the present embodiment It is not provided with the second preload piece 632, utilizes the piston rod 810 second sealing plate through the second end-cap assembly 420 of piston element 800 422 and second are connected with screw threads for fastening respective outer side edges after ring flange 421, and this screw threads for fastening structure is locking nut, described locking The lower surface contact of nut and the second ring flange 421 compresses.

In the present embodiment, the setting to piston element 800 can be similar to Example 3.

Below, by contrast test, the beneficial effects of the utility model are described in detail.

(1) maintenance period test

The membrane filtration module of conventional film filter assemblies and embodiment 1～10 in different time points to being located at the first end-cap assembly The maintenance result of the screw threads for fastening structure on 410 is as shown in table 1.

(nextpage continues)

Table 1:

Learnt by contrast test: during membrane filtration module persistently uses, membrane filtration module in embodiment 1～10 For conventional film filter assemblies, just need to be serviced after membrane filtration module uses 1000 hours, its maintenance period Significantly extend；In embodiment 1～10, membrane filtration module effectively avoids in filter process by arranging floating type hold-down mechanism The affected situation of film core 300 axial compression state, greatly improves the overall fastening reliability of membrane filtration module with easy Maintainability, it is possible to production and maintenance cost are greatly reduced.

(2) sealing property test

Conventional film filter assemblies and the membrane filtration module of embodiment 1～10, different time points integral sealing situation such as Shown in table 2.

(nextpage continues)

Table 2:

Being learnt by contrast test: during membrane filtration module persistently uses, conventional film filter assemblies is using 200 The little problem that seal failure has occurred the most, and the membrane filtration module of embodiment 1～10 is using 1000 hours, just occurs close The problem (such as: in three retests, for once finding seal failure) that envelope lost efficacy once in a while；In different time points, real The overall sealing performance executing example 1～10 membrane filtration module is superior to conventional film filter assemblies, it is possible to improve membrane filtration group greatly The dependability of part, and can ensure that membrane filtration module has more preferable strainability in a long time, the most corresponding Decrease the maintenance times to membrane filtration module, enterprise and whole industry are had important economic implications and environmental protection meaning Justice.

Claims (10)

1. shunting disk and the attachment structure of mandrel, including shunting disk (610) and mandrel (200), it is characterised in that: described shunting disk (610) and it is formed with welded gaps and/or bevel for welding, at described welded gaps and/or bevel for welding between mandrel (200) Shunting disk (610) is welded as a whole with mandrel (200).

2. shunting disk as claimed in claim 1 and the attachment structure of mandrel, it is characterised in that: described shunting disk (610) is provided with For the centre bore (615) being socketed with mandrel (200), described shunting disk (610) the most at least one end of centre bore (615) with Mandrel (200) forms described welded gaps and/or bevel for welding.

3. shunting disk as claimed in claim 2 and the attachment structure of mandrel, it is characterised in that: described mandrel (200) is provided with rank Ladder shaft part, described centre bore (615) is provided with described ladder shaft part corresponding matching so that mandrel (200) to be formed the platform of axially location Rank portion, shunting disk (610) forms welded gaps at the big end of described stage portion with mandrel (200), and shunting disk (610) is at described The small end in rank portion forms bevel for welding with mandrel (200).

4. shunting disk as claimed in claim 1 and the attachment structure of mandrel, it is characterised in that: described mandrel (200) is in hollow Tubulose, mandrel (200) is axially welded to connect with plug one end.

5. shunting disk as claimed in claim 1 and the attachment structure of mandrel, it is characterised in that: described shunting disk (610) deviates Centre bore (615) is provided with the split channel being evenly distributed.

6. for the welding tooling of one of claim 1 to 5 described shunting disk with mandrel, it is characterised in that: include fixed part, institute State fixed part and include bracing frame (710)；Limiting section, described limiting section includes the first limit base that can coordinate with mandrel (200) (720) the second limit base (730) and with described first limit base (720) being correspondingly arranged and can coordinate with shunting disk (610), Described first limit base (720) and the second limit base (730) be connected with support frame as described above (710) respectively after described first spacing Seat (720), between the second limit base (730) and bracing frame (710) formation be available for shunting disk (610) and mandrel (200) company of welding The working place connect.

7. welding tooling as claimed in claim 6, it is characterised in that: described first limit base (720) and the second limit base (730) the axial two ends of bracing frame (710) it are separately positioned on.

8. welding tooling as claimed in claim 7, it is characterised in that: described second limit base (730) includes the second installing plate (731), described second installing plate (731) is provided with the stopper slot (732) that can axially position described shunting disk (610)；Institute State the first limit base (720) and include the first installing plate (721) and the limit shaft sleeve (722) that can coordinate with described mandrel (200), institute State the first installing plate (721) be provided with vertically limit shaft sleeve (722) axially can be positioned and can make with limit shaft sleeve (722) The mandrel (200) coordinated is through the stepped hole (723) of rear connection shunting disk (610).

9. welding tooling as claimed in claim 8, it is characterised in that: described second installing plate (731) is provided with and institute vertically State stepped hole (723) corresponding and at least as the through hole (733) of a part of described working place.

10. the welding tooling as described in one of claim 6 to 9, it is characterised in that: support frame as described above (710) includes many companies It is connected on the support rod member between the first limit base (720) and the second limit base (730).