CN107198971B - Pressing detection device and detection method for bundle type membrane wires in water treatment membrane assembly - Google Patents

Pressing detection device and detection method for bundle type membrane wires in water treatment membrane assembly Download PDF

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Publication number
CN107198971B
CN107198971B CN201710567166.5A CN201710567166A CN107198971B CN 107198971 B CN107198971 B CN 107198971B CN 201710567166 A CN201710567166 A CN 201710567166A CN 107198971 B CN107198971 B CN 107198971B
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membrane
tows
bundle
shell
detection
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CN107198971A (en
Inventor
陈亦力
黄庆峰
刘德祥
任海勇
彭兴峥
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Oseco membrane technology (Tianjin) Co.,Ltd.
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Tianjin Bishuiyuan Membrane Material Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D65/00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/10Testing of membranes or membrane apparatus; Detecting or repairing leaks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/145Ultrafiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/20Accessories; Auxiliary operations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2313/00Details relating to membrane modules or apparatus
    • B01D2313/04Specific sealing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2315/00Details relating to the membrane module operation
    • B01D2315/06Submerged-type; Immersion type
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations

Abstract

The invention discloses a device and a method for detecting the pressure of bundled membrane yarns in a water treatment membrane module, wherein the pressure detection object is a membrane yarn bundle before casting, and the device comprises: a compressed air conduit; a foldable connector; a water tank; the foldable connector is used for fixing, extruding and sealing the membrane tows in a wrapping mode; the compressed air pipeline is used for filling gas with preset pressure into the membrane silk bundle through the foldable connector; the water tank is used for detecting the quality of the membrane yarn bundle filled with the pressure gas. According to the bundle type membrane wire pressing detection device and the detection method, membrane wire pressing detection is carried out before membrane unit bundle pouring, the quality of the membrane unit bundle is ensured from the source, the defects of a membrane assembly are greatly reduced, the operation is simple and convenient, and the membrane assembly is quickly disassembled, so that the overall quality of the bundle type membrane wires in the membrane assembly is improved, the bundle type membrane wires with high quality and high qualification rate are provided for the membrane assembly, the long-term normal operation of a membrane assembly device in the effective service life is ensured, and the water treatment efficiency is improved.

Description

Pressing detection device and detection method for bundle type membrane wires in water treatment membrane assembly
Technical Field
The invention belongs to the field of water treatment equipment, and particularly relates to a pressing detection device and a detection method for bundle type membrane wires in a water treatment membrane assembly.
Background
The membrane method water treatment process provides more feasible and efficient schemes for solving the problem of water treatment. In the membrane water treatment process, different membrane group devices and membrane components can be selected due to different water qualities and different occupied spaces. Under the condition that the total amount of sewage treatment is not changed, when the space is limited, the membrane module has smaller volume and occupies smaller space on the premise of requiring the same treatment function. Thus, higher design requirements are put on the membrane module and the membrane assembly. The design and application of the beam type detachable curtain type membrane assembly provide a new solution for solving the problem of space occupation in membrane water treatment, and the novel membrane assembly can be well applied no matter in an immersed type or an external type. Especially, the immersion type can reduce the complexity of the system, the occupied area and the running cost and the investment cost.
However, the immersed membrane module has no membrane shell, so the quality requirement on the bundle membrane yarn is higher than that on the external side. The utility model discloses a chinese utility model patent with patent number 201320725977.0 provides a detection device is suppressed to restrainting formula detachable curtain formula membrane module membrane unit bundle for the detection is suppressed to membrane unit bundle, the both ends that membrane unit bundled have the pouring tube, suppress detection device and include two sets of subassemblies of being connected with membrane unit bundle both ends pouring tube respectively, one of them set of subassembly includes grafting pipe, connecting pipe and the compressed air joint that connects gradually, the grafting pipe is installed the sealing washer respectively with the compressed air joint, the grafting pipe is connected with the pouring tube of membrane unit bundle one end, the compressed air joint is connected with the compressed air supply pipeline; the other set of component comprises an inserting pipe connected with a pouring pipe at the other end of the membrane unit bundle, a sealing ring is arranged on the inserting pipe, and a plug with one closed end is arranged at the tail end of the inserting pipe, so that the air tightness of the bundle type detachable curtain type membrane component membrane unit bundle and the detection of a defective membrane wire are realized.
However, the above-described method of detecting the pressing of the bundle of membrane units has the following disadvantages: the two ends of the membrane unit bundle are poured, and if the membrane unit bundle has defects, the membrane unit bundle needs to be repaired; repairing the cast membrane unit bundle, and casting the membrane unit bundle again, so that the production period of the membrane unit bundle is prolonged; meanwhile, structural defects caused by secondary pouring, such as layering between secondary pouring and primary pouring, patch strength and durability, cannot be avoided, when the repairing effect is poor and the repairing effect cannot be detected in the pressing detection, hidden dangers are buried for the overall operation of the membrane assembly, and the overall effect of the membrane assembly device is influenced.
Disclosure of Invention
The embodiment of the invention aims to provide a device and a method for detecting the pressure of bundled membrane filaments in a water treatment membrane module, which are used for improving the overall quality of the bundled membrane filaments in the membrane module, providing the bundled membrane filaments with high quality and high qualification rate for the membrane module, ensuring the long-term normal operation of a membrane module in the service life and improving the water treatment efficiency.
According to one aspect of the invention, a device for detecting the pressing of bundled membrane filaments in a water treatment membrane module is provided, and the device detects the pressing of a membrane filament bundle 1 before pouring, and comprises: a compressed air duct 2; a foldable connector 4; a water tank;
wherein the diameter of the compressed air pipeline 2 is the same as that of the compressed membrane silk bundle 1;
the foldable connector 4 is used for fixing, pressing and sealing the membrane tows 1 in a wrapping manner;
the compressed air pipeline 2 is used for filling gas with preset pressure into the membrane silk bundle 1 through the foldable connector;
the water tank is used for carrying out quality detection on the membrane tows 1 filled with pressure gas.
In the above solution, the foldable connector 4 fixes, presses and seals the membrane bundle 1 in a wrapping manner, and further includes:
bending the membrane tows to enable the two ends of the membrane tows to be combined together and simultaneously fixing the two ends of the membrane tows by a foldable connector 4;
or the like, or, alternatively,
the device further comprises: a plug 3;
the two ends of the membrane tow 1 are separated;
the number of the foldable connectors 4 is two, and the first foldable connector is used for fixing and sealing one end of the membrane wire bundle 1 in a wrapping mode; the plug 3 seals the other end of the first foldable connector which is not connected with the membrane yarn bundle; the second foldable connector fixes and seals the other end of the membrane bundle 1 in a wrapping manner, while the compressed air pipe 2 communicates with the other end of the second foldable connector.
In the above solution, the foldable connector 4 comprises a hinge fastener 41; a fixing member 42; a housing 43; a seal ring 44; a pin 45; a hinge 46; wherein the content of the first and second substances,
the shell 43 is composed of two parts, the two parts of the shell are connected together through a hinge 46 to form a complete shell, and the shell is freely opened and closed through a pin shaft 45; when the shell is in a closed state, the shell is connected with the fixed part 42 through the hinge fastening part 41 and is screwed and fixed through the hinge fastening part 41;
the sealing ring 44 is used for sealing, buffering and protecting the membrane tows 1 and is positioned inside the shell 43 and between the membrane tows 1 and the shell 43, and the closing line of the sealing ring 44 is staggered with the closing line of the shell 43;
the hinge fastening member 41 and the fixing member 42 are respectively fixed at both sides of the opening of the housing 43 for connecting and pressing the housing.
In the above scheme, the sealing surface of the sealing ring 44 is an inclined surface, and the cross-sectional unfolded shape of the sealing ring 44 is two openable arcs which can form a complete circle; the two curved connecting portions form an outer concave shape when opened, the concave portion being fixed to the housing 43, the two curved portions each having a free end for wrapping the film bundle 1 in the closed state and preventing the film bundle 1 from being squeezed, forming a complete seal ring 44.
In the above scheme, the sealing ring 44 is made of a material which has good elasticity, is friendly to membrane threads, and is resistant to corrosion of organic solvents.
In the above solution, the hinge fastener 41 is composed of a base 411, a pin 412, an adjusting member 413, and a screw 414; wherein the content of the first and second substances,
the base 411 is fixed on the shell 43;
the adjusting piece 413 is clamped or loosened through rotation on the screw rod 414; the adjusting piece 413 and the screw rod 414 together rotate freely in the direction vertical to the axis of the pin 412 through the pin 412;
the fixing member 42 is composed of a base 421 and a clamping groove 422; wherein the content of the first and second substances,
the base 421 is fixed on the shell 43;
the clamping groove 422 is arranged in the middle of the base 421, has a width corresponding to the outer diameter of the screw rod 414, and is used for fixing the screw rod 414.
In the above scheme, the gas is preferably air;
the preset pressure is 0.1MPa to 0.9 MPa.
According to another aspect of the invention, there is also provided a method for detecting the pressure of bundle membrane filaments in a water treatment membrane module, the method being implemented by any one of the above-mentioned devices for detecting the pressure of bundle membrane filaments in a water treatment membrane module, the method comprising the following steps:
s1, opening the foldable connector 4, fixing, pressing and sealing the membrane strand 1 in a wrapping manner;
s2, the compressed air pipeline 2 is used for filling gas with preset pressure into the membrane silk bundle 1 through the foldable connector;
s3, putting the membrane silk bundle 1 filled with the pressure gas into a water tank for quality detection; when bubbles emerge from the membrane filament bundle, the quality of the membrane filaments in the membrane filament bundle is not too close.
In the foregoing solution, the step S1 further includes:
s101, opening the foldable connector 4;
s102, one end of the membrane tows 1 is arranged at one end in the folding connector 4, and the membrane tows 1 are wrapped by the protruding parts of the sealing rings 44;
s103, closing the shell 43 while extruding the film tows 1 and pressing the sealing ring 44;
s104, the plug 3 is arranged at the other end of the folding connector 4;
s105, closing the hinged fastener 41, clamping the screw rod 414 into the fixing piece 42, and gradually compressing the membrane tows 1 and the plugs 3 through the adjusting piece 413;
s105, as above, the compressed air pipe 2 and the other end of the membrane tow 1 are fitted into the other foldable connector 4 and fastened.
In the foregoing solution, the step S1 further includes:
s201, opening the foldable connector 4;
s202, combining two ends of the membrane tows 1 together, loading the two ends of the membrane tows 1 into one end of the folding connector 4, and wrapping the two ends of the membrane tows 1 by using the convex parts of the sealing rings 44;
s203, closing the shell 43 while extruding the film tows 1 and pressing the sealing ring 44;
s204, the hinge fastening piece 41 is closed, the screw rod 414 is clamped into the fixing piece 42, and the adjusting piece 413 is rotated to gradually compress the sealing ring 2, the membrane thread bundle 1 and the compressed air pipeline 2, so that sealing is realized.
As can be seen from the above embodiments, the device and the method for detecting the bulge of bundled membrane filaments in a water treatment membrane module according to embodiments of the present invention include: a compressed air conduit; a foldable connector; a water tank; the foldable connector is used for fixing, extruding and sealing the membrane tows in a wrapping mode; the compressed air pipeline is used for filling gas with preset pressure into the membrane silk bundle through the foldable connector; the water tank is used for detecting the quality of the membrane silk bundle filled with pressure gas, so that the rapid detection of the membrane silk is realized. According to the bundle type membrane yarn pressing detection device and method, membrane yarn pressing detection is carried out before membrane unit bundle pouring, the quality of the membrane unit bundle is ensured from the source, the defects of a membrane assembly are greatly reduced, the operation is simple and convenient, the disassembly is rapid, and the labor efficiency is improved. Because the membrane filaments are not poured yet, the defective membrane filaments can be conveniently removed and replaced when being found, the membrane filaments can be repaired or degraded for use on line, the operation time is saved, unqualified membrane filaments are prevented from entering the membrane unit bundle from the source, the quality of the membrane assembly is ensured, particularly for immersed ultrafiltration membrane filaments, the quality of the membrane assembly can be greatly improved, the overall quality of the bundle type membrane filaments in the membrane assembly is improved, the bundle type membrane filaments with high quality and high qualification rate are provided for the membrane assembly, the long-term normal operation of the membrane assembly device in the effective service life is ensured, and the water treatment efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of a pressing detection device of a bundle type membrane wire in a water treatment membrane module according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of the foldable connector 4 according to embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a fastener 3 according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a pressing detection device of a bundle type membrane wire in a water treatment membrane module according to embodiment 3 of the present invention.
Description of reference numerals:
1. a membrane tow; 2. a compressed air conduit; 3. a plug; 4. a foldable connector; 41. a hinged fastener; 42. a fixing member; 43. a housing; 44. a seal ring; 45. a pin shaft; 46. a hinge; 411. a base; 412. a pin; 413. an adjustment member; 414. a screw rod; 421. a base; 422. a clamping groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The embodiment of the invention relates to a pressing detection device and a detection method for bundled membrane wires in a water treatment membrane assembly. The device includes: 1, film tows; a compressed air duct 2; a plug 3; a foldable connector 4. According to the embodiment of the invention, the foldable connector 4 is utilized to connect and seal the membrane tows 1, the compressed air pipeline 2 and the membrane tows 1 with the plug 3, the membrane tows 1 are placed in water, compressed air is conveyed into the membrane tows 1 through the compressed air pipeline 2, certain pressure is formed in the inner cavity of the membrane tows 1, if the membrane yarns have defects, air bubbles are formed in the water, and then the membrane yarns are rapidly detected.
The invention is further illustrated by the following specific examples.
Example 1:
the embodiment provides a detection device is suppressed to restraint formula membrane silk among water treatment membrane module, and figure 1 is the detection device structure sketch map of suppressing for this embodiment. As shown in fig. 1, the pressure detection device of the present embodiment performs pressure detection on a film tow 1 before casting, and the device includes: a compressed air duct 2; a plug 3; a foldable connector 4.
Fig. 2 is a schematic structural diagram of the foldable connector 4 according to this embodiment. As shown in fig. 2, the foldable connector 4 includes a hinge fastener 41; a fixing member 42; a housing 43; a seal ring 44; a pin 45; and a hinge 46.
The housing 43 is composed of two parts, the two parts of the housing 43 are connected together by a hinge 46 to form a complete housing, and freely opened and closed by a pin 45, when closed, the hinged fastening piece 41 is connected with the fixing piece 42, and the hinged fastening piece 41 is screwed and fixed. The sealing ring 44 is located inside the shell 43 and between the membrane yarn bundle 1 and the shell 43, plays roles of sealing, buffering and protecting the membrane yarn, and the material of the sealing ring 44 is made of a material which has good elasticity, is friendly to the membrane yarn and is resistant to corrosion of an organic solvent, such as silicon rubber, so that the membrane yarn is not damaged and is also resistant to corrosion. The hinge fastening member 41 and the fixing member 42 are respectively fixed at two sides of the opening of the housing 43 for connection and compression.
As shown in fig. 2, the closing line of the sealing ring 44 is staggered with the closing line of the housing 43, so that the sealing effect is improved; preferably, the sealing surface of the sealing ring is a bevel. Preferably, the cross-sectional expanded shape of the sealing ring 44 is two openable arcs that can form a complete circle. The two curved connecting portions form an outer concave shape when opened, the concave portion being fixed to the housing 43, the two curved portions each having a free end for wrapping the film bundle 1 in the closed state and preventing the film bundle 1 from being squeezed, forming a complete seal ring 44.
Fig. 3 is a schematic structural view of the hinge fastener 41. As shown in fig. 3, the hinge fastener 41 is composed of a base 411, a pin 412, an adjusting member 413 and a screw 414; wherein the base 411 is fixed on the housing 43; the adjusting piece 413 is clamped or loosened through rotation on the screw rod 414; the adjusting member 413 together with the screw 414 is rotatable by the pin 412 in a direction perpendicular to the axis of the pin 412. The fixing piece (42) consists of a base (421) and a clamping groove (422); wherein the base (421) is fixed on the shell (43); the clamping groove (422) is arranged in the middle of the base (421), the width of the clamping groove is matched with the outer diameter of the screw rod (414), and the clamping groove is used for fixing the screw rod (414). The width of the locking groove 422 is slightly larger than the diameter of the screw 414, so that the screw can be locked.
The diameter of the compressed air pipeline 2 is the same as that of the plug 3, and the diameter of the compressed air pipeline is also the same as that of the compressed membrane wire. The compressed air pipeline 2 can be connected with a pressure reducing valve, a pressure gauge and other devices for adjusting and displaying the air inlet pressure; the plug 3 can be connected with a pressure gauge or a pressure relief valve to monitor and control the pressure in the tail end membrane wire. The pressure of the compressed air is 0.1MPa to 0.9MPa, and the pressure in the plug 3, namely the tail end of the inner cavity of the membrane wire, needs to reach 0.1MPa to 0.15MPa or other required pressures so as to achieve the detection effect.
The compressed air pipeline 2 and the plug 3 are made of materials resistant to corrosion of organic solvents, such as stainless steel, pure titanium, PE, PVDF and the like, and are integrated with factors such as attractiveness, corrosion resistance, strength and the like, and stainless steel 304 is preferred; the plug 3 is used for sealing one end of the membrane tows 1 to keep the pressure in the inner cavity of the membrane tows.
The foldable connector 4 is made of a material resistant to corrosion of organic solvents, such as stainless steel, pure titanium, PE, PVDF and the like, and preferably made of stainless steel 304 by integrating factors such as attractiveness, corrosion resistance, strength and the like. The length range of the membrane silk detection device is 50 mm-200 mm, preferably, the length is 50 mm-120 mm, so that the detection effect can be ensured, the detection pressure can be ensured to be more than 0.1MPa, the larger membrane silk detection length can be ensured, and the omission detection can be prevented.
The detection device is suppressed to restraint formula membrane silk in water treatment membrane module of this embodiment, carries out the membrane silk before the pouring of membrane silk bundle and suppresses the detection, guarantees membrane unit from the source and restraints the quality, and greatly reduced membrane module defect, easy and simple to handle, quick dismantlement has improved labor efficiency. Because the membrane filaments are not poured yet, the defective membrane filaments can be conveniently removed and replaced when being found, the membrane filaments can be repaired or degraded for use on line, the operation time is saved, unqualified membrane filaments are prevented from entering the membrane unit bundle from the source, the quality of the membrane assembly is ensured, particularly for immersed ultrafiltration membrane filaments, the quality of the membrane assembly can be greatly improved, the overall quality of the bundle type membrane filaments in the membrane assembly is improved, the bundle type membrane filaments with high quality and high qualification rate are provided for the membrane assembly, the long-term normal operation of the membrane assembly device in the effective service life is ensured, and the water treatment efficiency is improved.
Example 2:
the embodiment corresponds to the detection device that suppresses of bundle membrane silk in water treatment membrane module in embodiment 1, provides a detection method that suppresses of bundle membrane silk in water treatment membrane module, suppress detection method and utilize and suppress collapsible connector 4, be connected and sealed membrane tow 1 and compressed air pipeline 2, membrane tow 1 with end cap 3, put membrane tow 1 into aquatic, carry compressed air in membrane tow 1 through compressed air pipeline 2, form certain pressure in membrane tow 1 inner chamber, if there is the defect in the membrane silk, form the bubble in aquatic promptly, and then realize the short-term test to the membrane silk.
Further, the pressing detection method comprises the following steps:
s101, opening the foldable connector 4;
s102, one end of the membrane tows 1 is arranged at one end in the folding connector 4, and the membrane tows 1 are wrapped by the protruding parts of the sealing rings 44;
s103, closing the shell 43 while extruding the film tows 1 and pressing the sealing ring 44;
s104, the plug 3 is arranged at the other end of the folding connector 4;
s105, closing the hinged fastener 41, clamping the screw rod 414 into the fixing piece 42, and gradually compressing the membrane tows 1 and the plugs 3 through the adjusting piece 413;
s105, as above, the compressed air pipeline 2 and the other end of the membrane tows 1 are arranged in the other foldable connector 4 and fastened;
s106, putting the membrane tows 1 into a water tank;
s107, opening a compressed air valve to enable compressed air to enter the membrane tows 1 through the compressed air pipeline 2 and the foldable connector 4, enabling the inner cavity of the membrane tows 1 to reach the required pressure, and if the membrane yarns have defects, forming bubbles in water to further achieve rapid detection of the membrane yarns;
s108, marking and replacing defective membrane filaments;
s109, the compressed air valve is closed, the hinge fastening piece 41 is unscrewed, and the foldable connector 4 is detached.
According to the bundle type membrane yarn pressing detection method in the water treatment membrane module, membrane yarn pressing detection is carried out before membrane unit bundle pouring, the quality of the membrane unit bundle is ensured from the source, the membrane module defects are greatly reduced, the operation is simple and convenient, the membrane unit bundle is quickly disassembled, and the labor efficiency is improved. Because the membrane filaments are not poured yet, the defective membrane filaments can be conveniently removed and replaced when being found, the membrane filaments can be repaired or degraded for use on line, the operation time is saved, unqualified membrane filaments are prevented from entering the membrane unit bundle from the source, the quality of the membrane assembly is ensured, particularly for immersed ultrafiltration membrane filaments, the quality of the membrane assembly can be greatly improved, the overall quality of the bundle type membrane filaments in the membrane assembly is improved, the bundle type membrane filaments with high quality and high qualification rate are provided for the membrane assembly, the long-term normal operation of the membrane assembly device in the effective service life is ensured, and the water treatment efficiency is improved.
Example 3:
the embodiment provides a detection device is suppressed to restraint formula membrane silk among water treatment membrane module, and figure 4 is the detection device structure sketch map of suppressing described in this embodiment. As shown in fig. 4, the device for detecting the bulge of the film tow 1 before casting according to the present embodiment is substantially the same as that of embodiment 1, except that the device does not include a plug 3.
Example 4:
the embodiment corresponds to the detection device that suppresses of bundle membrane silk in water treatment membrane module in embodiment 3, provides a detection method that suppresses of bundle membrane silk in water treatment membrane module, suppress detection method and utilize and suppress collapsible connector 4, connect and seal membrane silk bundle 1 and compressed air pipeline 2, put membrane silk bundle 1 into aquatic, carry compressed air to membrane silk bundle 1 in through compressed air pipeline 2, form certain pressure in membrane silk bundle 1 inner chamber, if the membrane silk has the defect, form the bubble in aquatic promptly, and then realize the short-term test to the membrane silk.
Further, the pressing detection method comprises the following steps:
s201, opening the foldable connector 4;
s202, combining two ends of the membrane tows 1 together, loading the two ends of the membrane tows 1 into one end of the folding connector 4, and wrapping the two ends of the membrane tows 1 by using the convex parts of the sealing rings 44;
s203, closing the shell 43 while extruding the film tows 1 and pressing the sealing ring 44;
s204, the hinge fastening piece 41 is closed, the screw rod 414 is clamped into the fixing piece 42, and the adjusting piece 413 is rotated to gradually compress the sealing ring 2, the membrane thread bundle 1 and the compressed air pipeline 2 to realize sealing;
s205, putting the membrane tows 1 into water;
s206, opening a compressed air valve to enable compressed air to enter the membrane tows 1 through the compressed air pipeline 2 and the foldable connector 4, enabling the inner cavity of the membrane tows 1 to reach the required pressure, and if the membrane yarns have defects, forming bubbles in water to further achieve rapid detection of the membrane yarns;
s207, marking and replacing defective membrane filaments;
s208, the compressed air valve is closed, the hinge fastening piece 41 is unscrewed, and the foldable connector 4 is detached.
The bundle type membrane yarn pressing detection method in the water treatment membrane module can realize membrane yarn pressing detection before membrane unit bundle pouring, and detects membrane yarns with low bubble points, so that the quality of the membrane unit bundle is ensured from the source, the defects of the membrane module are greatly reduced, labor and material expenses can be saved, and the method has the advantages of simplicity and convenience in operation, quickness in disassembly, high efficiency, reduction in production cost and the like. Because the membrane yarn is not poured before detection, the membrane yarn with defects can be conveniently removed and replaced, the membrane yarn with defects can be repaired or degraded for use on line, the operation time is saved, if more defects are found, the defects can be timely fed back to a production department, the problems can be timely arranged and searched, and the process and equipment can be timely adjusted. Compared with the existing membrane silk detection mode, the quality control point is advanced, and the quality of the membrane silk bundle is improved: detecting the membrane filaments with low bubble points in advance to ensure that unqualified membrane filaments do not enter the next procedure; unnecessary waste is reduced: the waste of materials and labor of the membrane component is reduced; the method avoids unqualified membrane filaments from entering the membrane unit bundle from the source, ensures the quality of the membrane component, and is particularly suitable for immersed ultrafiltration membrane filaments with higher requirements. The pressurizing detection method can greatly improve the quality of the immersed ultrafiltration membrane component and reduce the defects of membrane filament bundles, thereby improving the overall quality of the bundle-type membrane filaments in the immersed ultrafiltration membrane component, providing the membrane component with the bundle-type membrane filaments with high quality and high qualification rate, ensuring the long-term normal and stable operation of a membrane component in the effective life period, reducing the maintenance cost and after-sales service, improving the performance of the immersed ultrafiltration membrane and the efficiency of membrane water treatment, and being beneficial to improving the brand awareness and the market share.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (7)

1. The utility model provides a detection device is suppressed to binding formula membrane silk in water treatment membrane module, suppress detection device and suppress to membrane silk bundle (1) before the pouring and detect, its characterized in that, the device includes: a compressed air duct (2); a foldable connector (4); a water tank;
wherein the diameter of the compressed air pipeline (2) is the same as that of the compressed membrane tows (1);
the foldable connector (4) is used for fixing, pressing and sealing the membrane tows (1) in a wrapping manner;
the compressed air pipeline (2) is used for filling gas with preset pressure into the membrane tows (1) through the foldable connector; the gas is air; the preset pressure is 0.1MPa to 0.9 MPa; meanwhile, the pressure at the tail end of the lumen of the membrane wire reaches 0.1MPa to 0.15 MPa;
the water tank is used for detecting the quality of the membrane tows (1) filled with pressure gas;
the foldable connector (4) comprises a hinge fastener (41); a fixing member (42); a housing (43); a seal ring (44); a pin (45); a hinge (46); wherein the content of the first and second substances,
the shell (43) is composed of two parts, the two parts of the shell (43) are connected together through a hinge (46) to form a complete shell, and the shell is freely opened and closed through a pin shaft (45); when the shell is in a closed state, the hinged fastening piece (41) is connected with the fixed piece (42) and is screwed and fixed through the hinged fastening piece (41);
the sealing ring (44) is used for sealing, buffering and protecting the membrane tows (1) and is positioned inside the shell (43) and between the membrane tows (1) and the shell (43), and the closing line of the sealing ring (44) is staggered with the closing line of the shell (43);
the hinged fastening piece (41) and the fixing piece (42) are respectively fixed on two sides of the opening of the shell (43) and used for connecting and pressing the shell (43);
the hinged fastener (41) consists of a base (411), a pin (412), an adjusting piece (413) and a screw rod (414); wherein the content of the first and second substances,
the base (411) is fixed on the shell (43);
the adjusting piece (413) is clamped or loosened through rotation on the screw rod (414); the adjusting piece (413) and the screw rod (414) freely rotate in the direction vertical to the axis of the pin (412) through the pin (412);
the fixing piece (42) consists of a base and a clamping groove (422); wherein the content of the first and second substances,
the base is fixed on the shell (43);
the clamping groove (422) is arranged in the middle of the base, the width of the clamping groove is matched with the outer diameter of the screw rod (414) and used for fixing the screw rod (414).
2. The crush detection device according to claim 1, wherein the foldable connector (4) secures, squeezes and seals the membrane bundle (1) in a wrapped manner, further being:
bending the membrane tows to enable the two ends of the membrane tows to be combined together and simultaneously fixing the two ends of the membrane tows by a foldable connector (4);
or the like, or, alternatively,
the device further comprises: a plug (3);
the two ends of the membrane tows (1) are separated;
the number of the foldable connectors (4) is two, and the first foldable connector fixes and seals one end of the membrane wire bundle (1) in a wrapping mode; the plug (3) seals the other end of the first foldable connector which is not connected with the membrane yarn bundle; the second foldable connector fixes and seals the other end of the membrane wire bundle (1) in a wrapping manner, and the compressed air pipeline (2) is communicated with the other end of the second foldable connector.
3. The pressure detection device according to claim 1 or 2, wherein the sealing surface of the sealing ring (44) is an inclined surface, and the cross-sectional development shape of the sealing ring (44) is two openable arcs which can form a complete circle; the two curved connecting parts form an outer concave shape when opened, the concave part is fixed with the shell (43), and each of the two curved connecting parts is also provided with a free end which is used for wrapping the film tows (1) in a closed state and preventing the film tows (1) from being squeezed to form a complete sealing ring (44).
4. The pressing detection device according to claim 1 or 2, wherein the sealing ring (44) is made of a material which has good elasticity, is friendly to membrane threads, and is resistant to corrosion of organic solvents.
5. A method for detecting the pressing of bundled membrane wires in a water treatment membrane module, which is realized by the device for detecting the pressing of the bundled membrane wires in the water treatment membrane module as claimed in any one of claims 1 to 4, and is characterized by comprising the following steps:
s1, opening the foldable connector (4), fixing, pressing and sealing the membrane tows (1) in a wrapping manner;
s2, the compressed air pipeline (2) is used for filling gas with preset pressure into the membrane tows (1) through the foldable connector; the gas is air; the preset pressure is 0.1MPa to 0.9 MPa; meanwhile, the pressure at the tail end of the lumen of the membrane wire reaches 0.1MPa to 0.15 MPa;
s3, putting the membrane tows (1) filled with the pressure gas into a water tank for quality detection; when bubbles emerge from the membrane filament bundle, the quality of the membrane filaments in the membrane filament bundle is not too close.
6. The method for detecting the pressing of the bundled membrane wires in the water treatment membrane module as claimed in claim 5, wherein the step S1 is further as follows:
s101, opening the foldable connector (4);
s102, one end of the membrane tows (1) is arranged at one end in the folding connector (4), and the membrane tows (1) are wrapped by the protruding parts of the sealing rings (44);
s103, extruding the film tows (1), pressing the sealing ring (44) and closing the shell (43) at the same time;
s104, installing the plug (3) into the other end of the folding connector (4);
s105, closing the hinged fastener (41), clamping the screw rod (414) into the fixing piece (42), and gradually compressing the membrane tows (1) and the plug (3) through the adjusting piece (413);
and S105, loading the other ends of the compressed air pipeline (2) and the membrane silk bundle (1) into the other foldable connector (4) and fastening.
7. The method for detecting the pressing of the bundled membrane wires in the water treatment membrane module as claimed in claim 5, wherein the step S1 is further as follows:
s201, opening the foldable connector (4);
s202, combining two ends of the membrane tows (1), putting the two ends into one end in a folding connector (4), and wrapping the two ends of the membrane tows (1) by using the convex parts of a sealing ring (44);
s203, the outer shell (43) is closed while the film tows (1) are extruded and the sealing rings (44) are compressed;
s204, the hinged fastener (41) is closed, the screw rod (414) is clamped into the fixing piece (42), the adjusting piece (413) is rotated to gradually compress the sealing ring (2), the membrane tow (1) and the compressed air pipeline (2), and sealing is achieved.
CN201710567166.5A 2017-07-12 2017-07-12 Pressing detection device and detection method for bundle type membrane wires in water treatment membrane assembly Active CN107198971B (en)

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Publication number Priority date Publication date Assignee Title
CN2899215Y (en) * 2005-12-21 2007-05-09 波立门特工程设备(上海)有限公司 Flexible terminal
CN203037426U (en) * 2012-11-16 2013-07-03 江苏凯米膜科技股份有限公司 Device for detecting integrity of tubular membrane modules
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Address after: 301800 No.10, Fuli Road, plastic products industrial zone, Baodi District, Tianjin

Patentee after: Oseco membrane technology (Tianjin) Co.,Ltd.

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Patentee before: TIANJIN BISHUIYUAN MEMBRANE MATERIAL Co.,Ltd.

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