CN211393959U

CN211393959U - Anti-ozone aging and secondary pollution prevention security filter device

Info

Publication number: CN211393959U
Application number: CN201921898634.8U
Authority: CN
Inventors: 向龙; 赖启辉; 戴振宇
Original assignee: Hunan Longxin Water Purification Technology Co ltd
Current assignee: Hunan Longxin Water Purification Technology Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-09-01
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses an anti ozone ageing prevents secondary pollution's cartridge filter device, including cartridge filter casing, guide rod and flow core, the interior PTFE filter core that is inserted of guide rod and flow core, PTFE filter core includes the PTFE exoskeleton, the up end of PTFE exoskeleton installs the PTFE end cover, install the PTFE stem in the PTFE exoskeleton, install PTFE upper reaches strong layer and PTFE millipore filtration membrane and PTFE trip pendulum layer in the PTFE stem, the side wall mounting of PTFE exoskeleton has seted up the PVD water conservancy diversion hole; the filter element is provided with the PTFE material which is positioned in the flow guide rod and the flow core, the ozone resistance research conclusion technology of the hollow fiber membrane is applied to the water treatment system containing ozone, the filter element material of the cartridge filter adopts the PTFE customized filter element with good ozone resistance, and the characteristics of the PTFE material are utilized, so that the ozone resistance and the aging can be effectively prevented, and the secondary pollution can be prevented.

Description

Anti-ozone aging and secondary pollution prevention security filter device

Technical Field

The utility model belongs to the technical field of water treatment, concretely relates to anti-ozone aging prevents secondary pollution's safety filter device.

Background

The polyvinylidene fluoride (PTFE) folded membrane microporous filter element (PTFE is also called polyvinylidene fluoride, also called F2, is a homopolymer, generally has the density of 1.76-1.8, and is formed by folding a polyvinylidene fluoride filter membrane and a flow guide layer;

the safety filter is also called as a precision filter, is generally arranged in front of a pressure container to remove fine particles with turbidity of more than 1 ℃ so as to meet the requirement of the subsequent process on water inlet; and sometimes at the end of the overall water treatment system, to prevent fine particles (e.g., broken resin) from entering the product water. Stainless steel is mostly adopted as a shell, a filtering filter element (such as PP cotton) is arranged in the shell, and the filtering filter element is mainly used after multi-medium pretreatment filtration and before membrane filtration equipment such as reverse osmosis and ultrafiltration. The filter element is used for filtering fine substances (such as tiny quartz sand, activated carbon particles and the like) filtered by a plurality of media so as to ensure the water quality filtering precision and protect the membrane filter element from being damaged by large-particle substances. The precision grade of the filtering element arranged in the precise filtering device can be divided into 0.5 mu s,1 mu s,5 mu s,10 mu s and the like, and different filtering precisions are selected according to different use occasions to ensure the precision of the post-stage water outlet and the safety of the post-stage membrane element.

The filter element is made of PP cotton, nylon, melt-blown and other different materials, micro suspended matters, bacteria and other impurities in water are removed, and the quality of raw water meets the water inlet requirement of the reverse osmosis membrane. The working principle is that the PP filter element with 5 mu m pores is used for mechanical filtration. The residual micro suspended particles, colloid, microorganism, etc. in the water are trapped or adsorbed on the surface and in the pores of the filter element. Along with the increase of water production time, the operation resistance of the filter element gradually rises due to the pollution of intercepted matters, and when the water pressure difference of an inlet and an outlet reaches 0.1MPa, the filter element is required to be replaced. The main advantages of the cartridge filter are high efficiency, low resistance and easy replacement.

The cartridge filter structure: filter cloth, filter screen, filter disc, sintering filter tube, wire-wound filter element, melt-blown filter element, etc. Because of the difference of the filter materials, the filtering aperture is also different. The microfiltration is a filtration between sand filtration (rough filtration) and ultrafiltration, and the filtration pore size is generally in the range of 0.5 to 120 μm. The filter materials in the same form can be divided into different specifications according to the external dimensions. There are two types of wire-wound filter elements (also known as honeycomb filter elements): one is polypropylene fiber-polypropylene skeleton filter element, and the maximum use temperature is 60 ℃; the other is absorbent cotton fiber-stainless steel skeleton filter element, and the maximum service temperature is 120 ℃. The melt-blown filter element is a filter material formed by using polypropylene as a raw material and adopting a melt-blown process, and the maximum working temperature is 60 ℃. Microfiltration removes suspended matter, some colloidal matter and small particles from the water. The cartridge filter adopts a formed filter material, under the action of pressure, stock solution passes through the filter material, filter residues are remained on the tube wall, and filtrate flows out through the filter material, so that the aim of filtering is fulfilled.

During filtering, the ozone in the water has strong oxidizing ability besides the sterilization and bacteriostasis functions. In a water treatment system with ozone mixed sterilization, the material of a filter element of a conventional security filter is PP (such as a filter cloth, a filter screen, a filter disc, a sintered filter tube, a wire-wound filter element, a melt-blown filter element and the like), and the problem that the ozone aging resistance is poor in water treatment containing ozone and the secondary pollution of purified water is caused by easy aging and shedding is solved, so that the security filter device for preventing the secondary pollution by resisting the ozone aging is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti ozone aging prevents secondary pollution's safety filter device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an anti ozone is ageing prevents secondary pollution's cartridge filter device, includes cartridge filter casing, guide bar and flows the core, the guide bar all inserts in with flowing the core and is equipped with PTFE and crosses the filter core, PTFE crosses the filter core and includes the PTFE exoskeleton, the PTFE end cover is installed to the up end of PTFE exoskeleton, install the PTFE stem in the PTFE exoskeleton, install PTFE upper reaches in the PTFE stem and prop up the strong layer and PTFE millipore filtration membrane and PTFE trip and prop up the pendulum layer, the side wall mounting of PTFE exoskeleton has seted up PVD water conservancy diversion hole.

Preferably, a central pull rod is installed at a longitudinal axis position inside the cartridge filter housing, and a flow guide rod and a flow core are respectively installed on two sides of the central pull rod and inside the cartridge filter housing.

Preferably, the top end of the cartridge filter shell is detachably connected with a seal head used in cooperation with the cartridge filter shell, and the middle part of the seal head is provided with an exhaust port.

Preferably, the outer side wall of the cartridge filter housing is provided with a first inlet, a second inlet and a vent hole, and the outer side wall of the cartridge filter housing is provided with an outlet at a position close to the bottom end.

Preferably, the end socket is fixedly connected with the security filter shell through a clamp.

Preferably, the bottom of the PTFE outer framework is provided with a socket.

Compared with the prior art, the beneficial effects of the utility model are that:

through the design and installation of the filter element made of the PTFE material positioned in the guide rod and the flow core, the ozone resistance research conclusion technology of the hollow fiber membrane is applied to the water treatment system containing ozone, the filter element material of the security filter adopts the PTFE customized filter element with good ozone resistance, the ozone resistance of the PTFE membrane is the best by utilizing the characteristic of the PTFE material, the mechanical property of the PTFE membrane is changed very little after 500mg/L ozone treatment for 30d, the ozone resistance and the aging can be effectively realized, and the secondary pollution can be prevented.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

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

FIG. 2 is a schematic structural diagram of a PTFE upstream supporting layer, a PTFE microporous filter membrane and a PTFE floating layer according to the present invention;

in the figure: 1. a canister filter housing; 2. a first inlet; 3. a guide rod; 4. a flow core; 5. an outlet; 7. sealing the end; 8. a central pull rod; 9. an exhaust port; 10. clamping a hoop; 11. a second inlet; 12. an emptying hole; 13. a PTFE outer skeleton; 14. a PTFE stem; 15. PVD diversion holes; 16. a socket; 17. a PTFE upstream reinforcing layer; 18. a PTFE microporous filter membrane; 19. a PTFE free-bearing pendulum layer; 20. a PTFE end cap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an anti ozone is ageing prevents secondary pollution's cartridge filter device, including cartridge filter casing 1, water conservancy diversion pole 3 and flow core 4, it crosses the filter core to all insert in water conservancy diversion pole 3 and the flow core 4 and be equipped with PTFE, PTFE crosses the filter core and includes PTFE exoskeleton 13, PTFE end cover 20 is installed to the up end of PTFE exoskeleton 13, install PTFE stem 14 in the PTFE exoskeleton 13, install PTFE upper reaches in the PTFE stem 14 and prop up strong layer 17 and PTFE millipore filtration 18 and PTFE free pendulum layer 19, PVD water conservancy diversion hole 15 has been seted up in the side wall mounting of PTFE exoskeleton 13.

In this embodiment, it is preferable that a central pull rod 8 is installed at a longitudinal axis position inside the cartridge filter housing 1, and a flow guide rod 3 and a flow core 4 are respectively installed at both sides of the central pull rod 8 and inside the cartridge filter housing 1.

In this embodiment, preferably, the top end of the cartridge filter housing 1 is detachably connected with a sealing head 7 used in cooperation with the cartridge filter housing 1, and an exhaust port 9 is disposed in the middle of the sealing head 7.

In this embodiment, preferably, the first inlet 2, the second inlet 11 and the vent hole 12 are installed on the outer side wall of the cartridge filter housing 1, and the outlet 5 is opened at a position of the outer side wall of the cartridge filter housing 1 near the bottom end.

In this embodiment, the end socket 7 and the cartridge filter housing 1 are preferably fixedly connected by a clip 10.

In this embodiment, preferably, the bottom of the PTFE outer frame 13 is provided with a socket 16.

The utility model discloses a theory of operation and use flow:

the research conclusion of the ozone resistance of the hollow fiber membrane is that the classification number of the middle chart is as follows: TQ028.8, wherein the tolerance of five hollow fiber membranes to ozone is in the order of: PTFE > PAN > PES > PE > PP, the ozone resistance of PTFE membrane is the best, the change of the mechanical property is very small after 500mg/L ozone treatment for 30d, so the PTFE membrane is suitable for being used in the water treatment technology integrating ozone oxidation, activated carbon adsorption and ultrafiltration, the ozone resistance of PP membrane is the worst, the PP membrane reacts with ozone immediately when contacting with the ozone, and the PP membrane has the tolerance of only 3d under 30mg/L ozone treatment, therefore, the PP membrane is not suitable for being used in the environment with the existence of ozone, and therefore, PTFE is used as the material for use;

the installation process of the ozone-resistant cartridge filter comprises the following steps: after an exhaust port 9 and an emptying hole 12 are opened and evacuated, a hoop 10 is opened to uncover an end enclosure 7, a central pull rod 8 is disassembled, a PTFE filter element is installed and inserted into a guide rod 3 and a flow core 4, the end enclosure 7 is covered after two ends of the PTFE filter element are tightened and fixed through the central pull rod 8, and the end enclosure 7 and a security filter shell 1 are fixedly connected in a sealing way through the hoop 10;

the debugging process of the ozone-resistant security filter comprises the following steps: closing the vent hole 12, opening the exhaust port 9, injecting liquid from the first inlet 2 into the upper cavity of the cartridge filter shell 1 to fill the upper cavity of the cartridge filter shell 1 until the gas in the cavity is exhausted, closing the exhaust port 9, checking that no water leakage exists at the clamp 10, opening the second inlet 11 to clean the upper cavity of the cartridge filter shell 1, opening the vent hole 12 to clean the upper cavity of the cartridge filter shell 1 after the cleaning is finished, and completing debugging;

the filtering process of the anti-ozone cartridge filter comprises the following steps: liquid is injected into the upper cavity of the cartridge filter shell 1 from the first inlet 2, passes through the PVD diversion hole 15 on the PTFE outer framework 13, passes through the PTFE free-flow pendulum layer 19 to the PTFE microporous filter membrane 18 to the PTFE upstream strong layer 17, is filtered and purified, then is collected to the diversion rod 3 through the PTFE core column 14 after being purified, flows into the lower cavity of the cartridge filter shell 1, and then flows out through the outlet 5, and the filtration and purification are completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti ozone ageing prevents secondary pollution's cartridge filter device, includes cartridge filter casing (1), water conservancy diversion pole (3) and flows core (4), its characterized in that: the utility model discloses a PTFE filter element, including PTFE ectoskeleton (13), PTFE end cover (20) are installed to the up end of PTFE ectoskeleton (13), PTFE stem (14) are installed to PTFE ectoskeleton (13), install PTFE upper reaches in PTFE stem (14) and prop up strong layer (17) and PTFE millipore filtration membrane (18) and PTFE trip pendulum layer (19), PVD water conservancy diversion hole (15) have been seted up in the side wall mounting of PTFE ectoskeleton (13).

2. The ozone aging resistant secondary pollution prevention cartridge filter device as recited in claim 1, wherein: the cartridge filter is characterized in that a central pull rod (8) is installed at the longitudinal axis position inside the cartridge filter shell (1), and a flow guide rod (3) and a flow core (4) are installed on two sides of the central pull rod (8) and inside the cartridge filter shell (1) respectively.

3. The ozone aging resistant secondary pollution prevention cartridge filter device as recited in claim 1, wherein: the top end of the cartridge filter shell (1) is detachably connected with a seal head (7) which is matched with the cartridge filter shell (1) for use, and an exhaust port (9) is arranged in the middle of the seal head (7).

4. The ozone aging resistant secondary pollution prevention cartridge filter device as recited in claim 1, wherein: the outer side wall of the cartridge filter shell (1) is provided with a first inlet (2), a second inlet (11) and a vent hole (12), and the position of the outer side wall of the cartridge filter shell (1) close to the bottom end is provided with an outlet (5).

5. The ozone aging resistant secondary pollution prevention cartridge filter device as recited in claim 3, wherein: the seal head (7) is fixedly connected with the cartridge filter shell (1) through a hoop (10).

6. The ozone aging resistant secondary pollution prevention cartridge filter device as recited in claim 1, wherein: the bottom of the PTFE outer framework (13) is provided with a socket (16).