CN208472240U

CN208472240U - The spinneret of more inner hole runners

Info

Publication number: CN208472240U
Application number: CN201820055600.1U
Authority: CN
Inventors: 李梁梁; 高旭; 梁义; 胡晓宇
Original assignee: Tianjin Motimo Membrane Technology Co Ltd
Current assignee: Tianjin Motimo Membrane Technology Co Ltd
Priority date: 2017-10-12
Filing date: 2018-01-12
Publication date: 2019-02-05
Anticipated expiration: 2028-01-12
Also published as: CN107653501A; CN107988641A

Abstract

The utility model belongs to doughnut field of membrane preparation, and in particular to a kind of spinneret of more inner hole runners.The spinneret of more inner hole runners includes spinnerette body, and multiple spinneret channels as spin fluid runner are evenly distributed on the spinnerette body；The bore passage of N number of uniform array is provided in the spinneret channel, wherein N >=2 and be integer；The bore passage is circle to the channel as core liquid, air or linear reinforcement, the outer profile in the section of the inner hole runner.The utility model is usually 1 relative to the bore passage designed in traditional technology, and it is changed to be designed to N number of more than or equal to 2, realizing increases the packed density of hollow fiber film thread in the nondecreasing situation of internal pressure filter area, to obtain the more strong porous hollow fiber internal pressure film wire of rigidity.

Description

The spinneret of more inner hole runners

Technical field

The utility model belongs to doughnut field of membrane preparation, and in particular to a kind of spinneret of more inner hole runners.

Background technique

Spinneret used by conventional doughnut or hollow-fibre membrane is mainly annular spinneret, wherein inner ring conduct Outlet of the inner hole runner to the runner exit or the reinforcement that are passed through core liquid, air etc., exit orifice is as spin fluid (including spinning Stoste and spinning melt etc.) runner exit.There are also use concentric double ring shape spinnerets, on the basis of above-mentioned conventional spinneret It is further added by one layer of annular, for the mutual compound etc. of different substrates phase or different viscosities spin fluid.

There are following problems for the doughnut or hollow-fibre membrane of above-mentioned technology preparation: 1. for outer press mold, nothing Method solve contradiction between hollow-fibre membrane packed density and intensity, in particular to, for spinning pore-forming technique of the same race, be Doughnut film strength is improved, the wall thickness of gained hollow-fibre membrane must be just increased, but membrane module will certainly be reduced in this way Packed density, so as to cause the decline of component efficiency；2. for interior press mold, can not solve hollow-fibre membrane packed density with The unobstructed relationship of runner, in particular to, the clear and coherent degree of hollow fiber internal pressure film runner is influenced by film wire rigidity, it is opposite and Speech, the film wire more strong then runner of rigidity more straight unobstructed, and be that the outer diameter for increasing packed density and reducing film wire certainly will lead to film wire Flexibility increases, and increased so as to cause flow passage resistance force of waterproof.

Utility model content

The purpose of the utility model is to overcome in the prior art the shortcomings that, a kind of spinneret of more inner hole runners is provided.

To achieve the above object, the technical solution adopted in the utility model are as follows:

A kind of spinneret of more inner hole runners, including spinnerette body are evenly distributed on the spinnerette body multiple Spinneret channel as spin fluid runner；The bore passage of N number of uniform array is provided in the spinneret channel, wherein N >=2 and be integer；The bore passage is to the channel as core liquid, air or linear reinforcement, the inner hole stream The outer profile in the section in road is circle.

Bore passage diameter of section: spinneret channel cross-section diameter is 1:2~1:100.

Preferably, bore passage diameter of section: spinneret channel cross-section diameter is 1:2~1:10.

The outer profile in the section in the spinneret channel is circle, the setting of inner hole runner are as follows: with spinneret channel outer profile The center of circle be first nodal point, inner hole uniform flow passage is arranged in around the first nodal point, at the first nodal point Inner hole runner, which can be set, can also be not provided with inner hole runner.

The outer profile in the section in the spinneret channel is connected in series for multiple equal U-shaped circular arcs of radians, and inner hole runner is set Be set to: with the central point of the multiple U-shaped circular arcs of spinneret channel outer profile for the second central point, inner hole uniform flow passage is arranged in described Around second central point, inner hole runner, which can be set, in second center can also be not provided with inner hole runner.

When inner hole runner is arranged in the second center, the U-shaped circular arc is N-1.

When the not set inner hole runner of the second center, the U-shaped circular arc is N number of.

The utility model further includes the application of the spinneret of more inner hole runners described in one kind, and the spinneret is to make Standby doughnut or hollow-fibre membrane.

Compared with prior art, the utility model has the beneficial effects that

The utility model is usually 1 relative to the bore passage designed in traditional technology, and be changed to be designed to be greater than etc. In 2 it is N number of, for outer press mold, can wherein 1 or M (M is less than N) in multiple bore passages for introducing Linear reinforcement, thus realize realized on the basis of not reducing outer press mold packed density substantially obtained by film wire tensile strength have Effect increases；And for interior press mold, then it can realize that internal pressure filter area is nondecreasing by the design of N number of bore passage In the case of increase the packed density of hollow fiber film thread, to obtain the more strong porous hollow fiber internal pressure film wire of rigidity.

Detailed description of the invention

The schematic diagram that 1a, 1b, 1c, 1d in Fig. 1 are the utility model spinneret channel outer profiles when being round；

2a, 2b, 2c, 2d in Fig. 2 are schematic diagrames when the utility model spinneret channel outer profile is connected for U-shaped circular arc.

Specific embodiment

In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing The utility model is described in further detail with most preferred embodiment.

A kind of spinneret of more inner hole runners, including spinnerette body are evenly distributed on the spinnerette body multiple Spinneret channel as spin fluid runner；The bore passage of N number of uniform array is provided in the spinneret channel, wherein N >=2 and be integer；The bore passage is to the channel as core liquid, air or linear reinforcement, the inner hole stream The outer profile in the section in road is circle.Bore passage diameter of section: spinneret channel cross-section diameter is can be in 1:2~1:100 model In enclosing.Preferably, bore passage diameter of section: spinneret channel cross-section diameter is 1:2~1:10.

Fig. 1 shows the inner hole runner schematic diagram when outer profile in the section in the spinneret channel is round, inner hole runner Setting are as follows: using the center of circle of spinneret channel outer profile (i.e. outermost circle in Fig. 1) as first nodal point 2, inner hole runner 1 (dash area in figure) is uniformly arranged on around the first nodal point, and inner hole can be set at the first nodal point Runner can also be not provided with inner hole runner.1a, 1b, 1c, 1d are respectively N=2 in figure, inner hole runner schematic diagram when 3,4,5, Fig. 1 a, 1b not set inner hole runner, Fig. 1 c, 1d at first nodal point are provided with inner hole runner at first nodal point.Wherein First nodal point 2 is virtual point, it is intended to illustrate being uniformly distributed for bore passage.Between bore passage and spinneret channel outer profile Blank space is spinneret channel.

Inner hole when being connected in series Fig. 2 shows the outer profile in the section in the spinneret channel for multiple equal U-shaped circular arcs of radians The schematic diagram of runner, the setting of inner hole runner are as follows: with the central point of the multiple U-shaped circular arcs 4 of spinneret channel outer profile for the second center Point 6, inner hole runner 5 are uniformly arranged on around second central point, and inner hole stream can be set in second center Road can also be not provided with inner hole runner.2a, 2b, 2c, 2d are respectively N=2 in figure, inner hole runner schematic diagram when 3,4,5, figure 2a, 2b, 2c are provided with inner hole runner in the second center in the not set inner hole runner of the second center, Fig. 2 d.Wherein Two central points 6 are virtual point, it is intended to illustrate being uniformly distributed for bore passage.Sky between bore passage and spinneret channel outer profile White place is spinneret channel.Fig. 2 a, 2b, 2c are shown when the not set inner hole runner of the second center, and the U-shaped circular arc is N It is a.Fig. 2 d is shown when inner hole runner is arranged in the second center, and the U-shaped circular arc is N-1.The spinneret channel Outer profile section is divided into a equally distributed U-shaped circular arc of N (or N-1)；The open end of the U-shaped circular arc is coupled to each other Form the outer profile in the spinneret channel, and the central point of the closed end of the U-shaped circular arc and with virtual outer ring (figure In outermost virtual circles) at point of contact, be intended to illustrate U-shaped circular arc at being uniformly distributed herein.

PVDF external pressure film wire is prepared using spinneret plate structure shown in Fig. 2 b, the aperture of spinneret bore passage is 0.9mm (m in Fig. 2 b), the diameter (L*2 in Fig. 2 b) for the virtual circles that U-shaped circular arc is formed are 1.8mm, spinneret channel outer profile it is external Circle (n in Fig. 2 b) diameter is 2.7mm.It is passed through braided fabric in one inner hole runner of spinneret, other inner hole runners are passed through core liquid, The mechanical strength of PVDF external pressure film wire obtained is outside 11.30mm, with tradition up to 630cN, the outer profile length in film wire section The outer press mold (the long 8.478mm of section outer profile) of the PVDF doughnut that diameter is 2.7mm, internal diameter is 0.7mm compares more 25%；Cause This, according to membrane module made of identical row's silk mode, is made in the component of same volume using film wire obtained by the utility model Membrane module increase 25% than membrane module filling area made of traditional film wire, realize film wire tensile strength and component and fill Double increases of density.

PES hollow fiber internal pressure film is prepared using spinneret plate structure shown in Fig. 1 c, due to the bore passage number in spinneret Mesh is 5, there is 5 interior pressure passageway in the film wire spun out, and compared with conventional hollow fiber internal pressure film, cross-sectional area is bigger, because Film wire modulus can be increased by 50% under the premise of membrane module filter area obtained by guarantee remains unchanged by this, effectively maintain institute Much rigidity of in-core press mold.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims

1. a kind of spinneret of more inner hole runners, which is characterized in that including spinnerette body, uniformly divide on the spinnerette body It is furnished with multiple spinneret channels as spin fluid runner；The inner hole that N number of uniform array is provided in the spinneret channel is logical Road, wherein N >=2 and be integer；The bore passage is described to the channel as core liquid, air or linear reinforcement Inner hole runner section outer profile be circle.

2. the spinneret of more inner hole runners according to claim 1, which is characterized in that bore passage diameter of section compares spinneret Channel cross-section diameter=1:2~1:100.

3. the spinneret of more inner hole runners according to claim 1, which is characterized in that the section in the spinneret channel Outer profile is circle, the setting of inner hole runner are as follows: using the center of circle of spinneret channel outer profile as first nodal point, inner hole uniform flow passage It is arranged in around the first nodal point, inner hole runner is set at the first nodal point or is not provided with inner hole runner.

4. the spinneret of more inner hole runners according to claim 1, which is characterized in that the section in the spinneret channel Outer profile is connected in series for multiple equal U-shaped circular arcs of radians, the setting of inner hole runner are as follows: with the multiple U-shaped circles of spinneret channel outer profile The central point of arc is the second central point, and inner hole uniform flow passage is arranged in around second central point, second center Inner hole runner is set at point or is not provided with inner hole runner.

5. the spinneret of more inner hole runners according to claim 4, which is characterized in that when inner hole is arranged in the second center When runner, the U-shaped circular arc is N-1.

6. the spinneret of more inner hole runners according to claim 4, which is characterized in that in the second center is not set When the runner of hole, the U-shaped circular arc is N number of.