CN210229644U - Solvent-resistant hydrophilic polytetrafluoroethylene membrane filter element without prewetting - Google Patents

Abstract

The utility model discloses a solvent-resistant, need not hydrophilic polytetrafluoroethylene membrane filter core of prewetting, including shell, end cover, socket, O type circle, well core rod, millipore filtration membrane, low reaches supporting layer, upstream water conservancy diversion layer, solid fixed ring, locating hole and fixing device, the shell top is provided with the end cover, shell bottom face fixed mounting has the socket. The utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization, this filter core adopts hydrophilic polytetrafluoroethylene membrane, the extensive chemical compatibility of PTFE membrane makes the filter core be fit for being used for the filtration of various strong acid strong bases, need not prewetting before the use, the filtration of various menstruums in the mainly used bulk drug production process, to the inside millipore filtration membrane of shell, when dismantling the change on low reaches supporting layer and upper reaches water conservancy diversion layer, draw the knot through the pulling, make the locating lever remove, the locating lever shifts out from solid fixed ring's locating hole, thereby can be with millipore filtration membrane, low reaches supporting layer and upper reaches water conservancy diversion layer are whole to be taken out, thereby change.

Description

Solvent-resistant hydrophilic polytetrafluoroethylene membrane filter element without prewetting

Technical Field

The utility model relates to a rotatory transposition equipment field specifically is a solvent-resistant, need not hydrophilic polytetrafluoroethylene membrane filter core of prewetting.

Background

The filter element is a professional term with filtering and purifying functions, and in order to purify resources of original fluid and a simple and convenient device for separating the resources, the filter element is mainly used in the filtering industries of oil filtration, air filtration, water filtration and the like at present, a membrane technology is a new technology which is rapidly developed under social demands, and a Polytetrafluoroethylene (PTFE) microporous filter membrane is used as a filtering membrane and is widely applied to the fields of medicine, environmental protection and biomedicine by using a specific technical parameter mechanism and filtering characteristics of the PTFE microporous filter membrane.

But the filter core on the existing market is not only complicated in structure, but also single in function, and in the existing filter core technology, the compatibility of the filter core and the filtering solution is poor, and the filter core needs to be prewetted when filtering, and meanwhile, the filter membrane inside the filter core is not convenient to detach and replace.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solvent-resistant, need not the hydrophilic polytetrafluoroethylene membrane filter core of prewetting to solve the problem that proposes in the above-mentioned background art.

The purpose of the utility model can be realized by the following technical scheme: a hydrophilic polytetrafluoroethylene membrane filter element resistant to solvents and free of prewetting comprises a shell, an end cover, a socket, an O-shaped ring, a center rod, a microporous filter membrane, a downstream supporting layer, an upstream flow guide layer, a fixing ring, a positioning hole and a fixing device, wherein the end cover is arranged at the top of the shell, the socket is fixedly arranged on the surface of the bottom end of the shell, the O-shaped ring is sleeved on the outer side of the bottom of the socket, the center rod is arranged at the center inside the shell, the upstream flow guide layer is arranged at a position close to the inner wall inside the shell, the microporous filter membrane is arranged at a position close to the side of the center rod, the downstream supporting layer is arranged at a position close to the side of the center rod, the fixing ring is arranged at the top end of the downstream supporting layer, the microporous filter membrane and the upstream flow guide layer are fixedly arranged, and fixing devices are fixedly arranged on two sides of the top end in the shell.

Wherein, fixing device includes fixed bolster, through-hole, locating lever, draws knot, limiting plate, compression spring, the equal fixed mounting in inside top both sides of shell has a fixed bolster, two the fixed bolster is close to the central rod end and all has seted up the through-hole, two the inside locating lever that is provided with of through-hole, and locating lever and locating hole position correspond, two the locating lever is located fixed bolster outside end fixed mounting and draws the knot, two the equal fixed mounting in locating lever outside has a limiting plate, two compression spring has all been cup jointed in the locating lever outside, and compression spring one end supports the limiting plate, and the compression spring other end supports and supports the fixed bolster inner wall.

Preferably, the microporous membrane is a member made of polytetrafluoroethylene material, and the conventional preparation method of the polytetrafluoroethylene microporous membrane is as follows: the PTFE microporous membrane is produced by mixing a polytetrafluoroethylene dispersion resin with a liquid auxiliary, forming the mixture into a sheet by a calendering method, and biaxially stretching the sheet by a machine.

The shell is fixedly connected with the end cover through threads.

Further, a sealing ring is arranged at the joint of the shell and the end cover.

Wherein the periphery of the bottom of the socket is provided with a mounting groove along the circumferential direction, and the O-shaped ring is fixedly mounted inside the mounting groove.

The utility model has the advantages that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization, this filter core adopts hydrophilic polytetrafluoroethylene membrane, the extensive chemical compatibility of PTFE membrane makes the filter core be fit for being used for the filtration of various strong acid and strong base, need not prewetting before using, mainly used filtration of various menstruum in the bulk drug production process, when dismantling the change to the millipore filtration membrane inside the shell, low reaches supporting layer and upper reaches water conservancy diversion layer, through pulling the zip fastener, make the locating lever remove, the locating lever shifts out from the locating hole of solid fixed ring, thereby can wholly take out millipore filtration membrane, low reaches supporting layer and upper reaches water conservancy diversion layer, thereby change, the millipore filtration membrane after will changing, low reaches supporting layer and upper reaches water conservancy diversion layer wholly put into the shell inside, the limiting plate compresses compression spring when the locating lever removes, after loosening the zip fastener, compression spring release elasticity acts on the limiting plate, make locating lever and, thereby performing fixation.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is an enlarged view of a structure at a in fig. 2.

Description of reference numerals:

1. a housing; 2. an end cap; 3. a socket; 4. an O-shaped ring; 5. a center pole; 6. a microporous filtration membrane; 7. a downstream support layer; 8. an upstream flow guiding layer; 9. a fixing ring; 10. positioning holes; 111. fixing a bracket; 112. a through hole; 113. positioning a rod; 114. pulling the button; 115. a limiting plate; 116. compressing the spring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-3, a solvent-resistant hydrophilic polytetrafluoroethylene membrane filter element without prewetting comprises a shell 1, an end cover 2, a socket 3, an O-ring 4, a center rod 5, a microporous filter membrane 6, a downstream supporting layer 7, an upstream flow guide layer 8, a fixing ring 9, a positioning hole 10 and a fixing device, wherein the end cover 2 is arranged at the top of the shell 1, the shell 1 is fixedly connected with the end cover 2 through threads, and the shell 1 is fixedly connected with the end cover 2. The sealing ring is arranged at the joint of the shell 1 and the end cover 2, so that the shell 1 and the end cover 2 are better in sealing connection.

1 bottom face fixed mounting of shell has socket 3, O type circle 4 has been cup jointed in the 3 bottom outsides of socket, the mounting groove has been seted up along the circumferencial direction all around to 3 bottoms of socket, and O type circle 4 fixed mounting can carry out fixed mounting to O type circle 4 better inside the mounting groove.

The inner center of the shell 1 is provided with a center rod 5, the inner wall of the shell 1 is provided with an upstream flow guiding layer 8, the side of the upstream flow guiding layer 8 close to the center rod 5 is provided with a microporous filter membrane 6, the microporous filter membrane 6 is a component made of polytetrafluoroethylene materials, and the conventional preparation method of the polytetrafluoroethylene microporous membrane is as follows: the PTFE microporous membrane is produced by mixing a polytetrafluoroethylene dispersion resin with a liquid auxiliary, forming the mixture into a sheet by a calendering method, and biaxially stretching the sheet by a machine. The side of the microporous filter membrane 6 close to the center rod 5 is provided with a downstream supporting layer 7, the top end of the downstream supporting layer 7 is provided with a fixing ring 9, and the top ends of the downstream supporting layer 7, the microporous filter membrane 6 and the upstream flow guide layer 8 are fixedly arranged in the fixing ring 9. The utility model discloses a fixed ring 9 is close to well core rod 5 side both ends and all corresponds and has seted up locating hole 10, the equal fixed mounting in 1 inside top both sides of shell has fixing device, fixing device includes fixed bolster 111, through-hole 112, locating lever 113, draws and detain 114, limiting plate 115, compression spring 116, the equal fixed mounting in 1 inside top both sides of shell has fixed bolster 111, and two fixed bolsters 111 are close to well core rod 5 end and have all seted up through-hole 112, and the inside locating lever 113 that is provided with of two through-holes 112, and locating lever 113 corresponds with locating hole 10 position, and two locating levers 113 are located fixed mounting of fixed bolster 111 outside end has and draws and detain 114, and the equal fixed mounting in two locating lever 113 outsides has limiting plate 115, and compression spring 116 has all been cup jointed in the two locating lever 113 outsides, compression.

The utility model discloses a theory of operation does: the filter element adopts a hydrophilic polytetrafluoroethylene membrane, the wide chemical compatibility of the PTFE membrane ensures that the filter element is suitable for filtering various strong acids and strong bases, the filter element does not need to be prewetted before use and is mainly used for filtering various solvents in the production process of raw material medicines, when the microporous filter membrane 6, the downstream supporting layer 7 and the upstream flow guide layer 8 in the shell 1 are disassembled and replaced, the pull buckle 114 is pulled to move the positioning rod 113, the positioning rod 113 is moved out of the positioning hole 10 of the fixing ring 9, so that the microporous filter membrane 6, the downstream supporting layer 7 and the upstream flow guide layer 8 can be integrally taken out for replacement, the replaced microporous filter membrane 6, the downstream supporting layer 7 and the upstream flow guide layer 8 are integrally placed in the shell 1, the positioning plate 115 compresses the compression spring 116 when the positioning rod 113 moves, after the pull buckle 114 is loosened, the compression spring 116 releases elasticity to act on the limiting plate 115, so that the positioning rod 113 and the positioning hole 10, thereby performing fixation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The hydrophilic polytetrafluoroethylene membrane filter element is solvent-resistant and free of prewetting, and is characterized by comprising a shell (1), an end cover (2), a socket (3), an O-shaped ring (4), a central rod (5), a microporous filter membrane (6), a downstream supporting layer (7), an upstream flow guide layer (8), a fixing ring (9), a positioning hole (10) and a fixing device, wherein the end cover (2) is arranged at the top of the shell (1), the socket (3) is fixedly arranged on the bottom plate surface of the shell (1), the O-shaped ring (4) is sleeved on the outer side of the bottom of the socket (3), the central rod (5) is arranged at the center of the interior of the shell (1), the upstream flow guide layer (8) is arranged at the position close to the inner wall of the interior of the shell (1), the microporous filter membrane (6) is arranged at the side of the upstream flow guide layer (8) close to the central rod (5), the downstream supporting layer, the top end of the downstream supporting layer (7) is provided with a fixing ring (9), the top ends of the downstream supporting layer (7), the microporous filter membrane (6) and the upstream flow guide layer (8) are fixedly installed inside the fixing ring (9), the two ends of the side, close to the central rod (5), of the fixing ring (9) are correspondingly provided with positioning holes (10), and fixing devices are fixedly installed on the two sides of the top end inside the shell (1).

2. The solvent-resistant non-prewetting hydrophilic polytetrafluoroethylene membrane filter element according to claim 1, wherein the fixing device comprises a fixing support (111), through holes (112), positioning rods (113), pull buttons (114), limiting plates (115) and compression springs (116), the fixing support (111) is fixedly mounted on both sides of the top end inside the housing (1), the through holes (112) are formed in both ends of the fixing support (111) close to the central rod (5), the positioning rods (113) are arranged inside the through holes (112), the positioning rods (113) correspond to the positioning holes (10), the pull buttons (114) are fixedly mounted on the outer sides of the fixing support (111) of the positioning rods (113), the limiting plates (115) are fixedly mounted on the outer sides of the positioning rods (113), and the compression springs (116) are sleeved on the outer sides of the positioning rods (113), one end of the compression spring (116) abuts against the limiting plate (115), and the other end of the compression spring (116) abuts against the inner wall of the fixed support (111).

3. The solvent-resistant, non-prewetted hydrophilic polytetrafluoroethylene membrane cartridge according to claim 1, wherein said housing (1) and said end cap (2) are fixedly connected by means of a screw thread.

4. The solvent resistant, non-prewetted hydrophilic polytetrafluoroethylene membrane cartridge according to claim 1, wherein a sealing ring is provided at the junction of said housing (1) and said end cap (2).

5. The filter element of claim 1, wherein an installation groove is formed in the periphery of the bottom of the socket (3) along the circumferential direction, and the O-shaped ring (4) is fixedly installed in the installation groove.

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