CN104740944A - Filtering device used for gas-solid separation - Google Patents
Filtering device used for gas-solid separation Download PDFInfo
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- CN104740944A CN104740944A CN201510154704.9A CN201510154704A CN104740944A CN 104740944 A CN104740944 A CN 104740944A CN 201510154704 A CN201510154704 A CN 201510154704A CN 104740944 A CN104740944 A CN 104740944A
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- filter bag
- bag
- orifice plate
- solid separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
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- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a filtering device used for gas-solid separation. According to the device, the deformation capability of a filtering element is between that of a rigid filter pipe and that of a flexible filter bag, so that compared with the flexible filter bag, the service life of the filtering element is prolonged; and compared with the rigid filter pipe, the axial vibration is generated by the filtering element to reinforce ash cleaning. The filtering device comprises a box body; the box body is internally provided with a pore plate; a plurality of external filtering type filter bags are arrayed on the pore plate, and one end of each external filtering type filter bag is opened and the other end of each external filtering type filter bag is closed; the opening ends of the filter bags are mounted on the pore plate and the closed ends of the filter bags are connected with elastic traction devices for axially tensioning the filter bags; and the filter bags are further internally provided with inner supporting assemblies for elastically tensioning the whole bodies of the filter bags in the radial direction. The filter bags are in an axial and radial bidirectional stretching state under the common effect of the elastic traction devices and the inner supporting assemblies; and the deformation capability of the filter bags can represent the intermediate state between that of a rigid filter element and that of a flexible filter element.
Description
Technical field
The present invention relates to a kind of filter, be specifically related to a kind of filter for gas solid separation.
Background technology
In gas-solid isolated by filtration field, outside filtering type filter bag and outside filtering type ceramic screen pipe are all conventional filter elements.So-called " outside filtering type " refers to that gas to be filtered realizes the filter type of gas solid separation purification from filter element externally to filter element interior infiltration.Use on the filter apparatus configuration of outside filtering type filter bag and generally comprise casing, in casing, orifice plate is installed, on orifice plate, arrangement is provided with the filter bag of multiple upper end open and lower end closed, the upper end of these filter bags is arranged on orifice plate, the lower end of filter bag is unsettled, and some filters are also equipped with in the inside of filter bag and the bag cage of filter bag loose fit (be only prevent in filter bag flat); To be positioned at below orifice plate for Primordial Qi room in casing, to be positioned at for air-purifying chamber above orifice plate, casing is provided with and the air inlet of Primordial Qi room conducting and the exhaust outlet with air-purifying chamber conducting; The back-blowing device for carrying out recoil air-flow deashing to each filter bag is also provided with above casing.Filter apparatus configuration and the said structure of use outside filtering type ceramic screen pipe are similar, the main distinction is chimney filter originally as rigidity (and filter bag is for flexible), during filtration, chimney filter there is no obvious radial contraction, therefore also without the structure similar with the effect of above-mentioned bag cage in chimney filter.
The filter shortcoming of above-mentioned use outside filtering type filter bag is mainly the high pressure recoil air-flow that back-blowing device must act on filter bag 0.1 to 0.8 MPa usually, and not only energy consumption is high, and recoil air-flow ash-removal effect is also undesirable etc.For this reason, the applicant of the application provides a kind of filter for gas solid separation in the application for a patent for invention document (calling bibliography in the following text) of CN104028059A, this device adds the elasticity pulling device making the axial tensioning of filter bag in the lower end of each filter bag, like this, when recoil air-flow deashing being implemented to filter bag by back-blowing device, filter bag first can be radially expanded under recoil airflow function, thus make the lower end of filter bag upwards strain elasticity pulling device further, and after recoil air-flow disappears, filter bag axial vibration under the effect of elasticity pulling device screen resilience, producing makes the particle on filter bag surface from the shearing force of filter bag sur-face peeling, thus the ash-removal effect improved filter bag.In addition, also advocate in above-mentioned bibliography not establish a bag cage in its filter bag, when filter bag length is shorter, only need by filter bag axial tightening not be needed to carry out other unnecessary supports to filter bag; When filter bag length is longer, can anti-flat ring be set on filter bag bag.
Present inventor notices, use the filter of outside filtering type ceramic screen pipe because its chimney filter is originally as rigidity, therefore this chimney filter radial-deformation in filtration and blowback process is small, the service life of chimney filter is higher, but, owing to being difficult to use the elasticity pulling device in bibliography in this filter, therefore chimney filter can not be made to produce axial vibration to strengthen deashing; And on the other hand, although the filter in bibliography makes the axial tensioning of filter bag by elasticity pulling device and makes chimney filter produce axial vibration when blowback and assist deashing, but filter bag in use still keeps certain " flexibility " state, the radial-deformation of filter pocket material is much higher than rigidity chimney filter, thus affects the service life of filter bag.In addition to the above-mentioned problems, applicant also finds in the actual use of the filter of bibliography, and this filter exists that sealing effectiveness between the end cover bottom its filter bag and filter bag is not good, the problems such as inconvenience assembled by filter bag in casing.
Summary of the invention
The application is first for the problem that above-mentioned rigidity chimney filter and flexible bag use advantage to take into account very well separately, a kind of filter for gas solid separation is provided, in this device, the deformability of filter element can between rigidity chimney filter and flexible bag, thus both comparability improves the service life of filter element in flexible bag, comparability realizes making filter element produce axial vibration to strengthen deashing in rigidity chimney filter again.Secondly the problem not good for sealing property between the end cover bottom filter bag in bibliography and filter bag is provided a kind of filter being used for gas solid separation improving sealing property between its filter bag and end cover by the present invention.The present invention also will provide a kind of filter for gas solid separation making the installation of filter element more convenient.
For solving above-mentioned first technical problem, filter for gas solid separation comprises casing, in described casing, orifice plate is installed, on orifice plate arrangement multiple one end open is installed and the other end close outside filtering type filter bag, the openend of described filter bag is arranged on orifice plate, the blind end of filter bag is connected with the elasticity pulling device making the axial tensioning of this filter bag, this elasticity pulling device connects and elastic tension is in filter bag and filter bag blind end that outer and orifice plate keeps between the fixed component of setpoint distance, be positioned in casing inside orifice plate is Primordial Qi room, be positioned at outside orifice plate is air-purifying chamber, casing is provided with and the air inlet of Primordial Qi room conducting and the exhaust outlet with air-purifying chamber conducting, casing is provided with the back-blowing device for carrying out recoil air-flow deashing to each filter bag, the inner support assembly making this filter bag overall radial elastic tension is also provided with in described filter bag.Above-mentioned filter is under filtration condition, its filter bag under the effect of elasticity pulling device retainer shaft to elastic tension, simultaneously, described inner support assembly from inside to outside acts on filter bag makes again this filter bag keep radial elastic tensioning, filter bag under the acting in conjunction of elasticity pulling device and inner support assembly in axially, radial biaxial tension state, at this moment, the deformability of filter bag presents the intermediateness between rigid filter element and flexible filter element, during filtration only there is less radial deformation in filter bag, when recoil air-flow deashing being implemented to filter bag by back-blowing device, filter bag first can carry out being radially expanded more by a small margin under recoil airflow function, thus make the lower end of filter bag upwards strain elasticity pulling device further, and after recoil air-flow disappears, under the effect of elasticity pulling device screen resilience, filter bag produces axially by a small margin and the vibration of upper frequency, produce and impel the shearing force making the particle on filter bag surface from filter bag sur-face peeling, thus the ash-removal effect improved filter bag.
Described inner support assembly can be have the cylindrical cage structure suitable with the inner chamber of filter bag, then the preferred external diameter of this cage structure 0 ~ 1mm larger than the internal diameter of filter bag when nature.Above-mentioned cylindrical cage structure ensure that the contact area of inner support assembly and filter bag, contributes to making filter bag realize the tensioning of " entirety " radial elastic; When the external diameter of cage structure than filter bag in nature time internal diameter large 0 ~ 1mm time, after filter bag is by the tension of elasticity pulling device, the internal diameter of filter bag also can reduce further, the internal diameter of filter bag and the difference of cage structure external diameter improve further, guarantee to make this filter bag overall radial elastic tension by cage structure.The external diameter of above-mentioned cage structure can more preferably 0.2 ~ 1mm larger than the internal diameter of filter bag when nature.
Higher filtering accuracy can be reached to ensure its filter efficiency for making filter bag, good gas permeability can be reached again to reduce filtration resistance, can also be convenient to carry out deashing to filter bag simultaneously, and ensure that filter bag does not relax under Long-Time Service, the present invention also further selection to filter bag body structure and material thereof has carried out following improvement, that is: filter bag bag comprises inner bag and the close attachment micro porous filtration film on outer surface of liner be made up of High-strength air-permeable fabric, the longitudinal tensile strength >=520KN/m of described inner bag, transverse tensile strength >=380KN/m.The above-mentioned inner bag that is made up of High-strength air-permeable fabric and micro porous filtration film combinations are used, benefit from the one hand higher hot strength that High-strength air-permeable fabric possesses and that filter bag can not be occurred because of the tensioning continued under Long-Time Service condition is lax, avoid decline and the disappearance of filter bag axis and radial tensile force, prevent decline that is axial because of filter bag and radial tensile force from even disappearing the increase of caused filter bag radial-deformation or/and swing; On the other hand because the part of filtration on filter bag is micro porous filtration film, inner bag plays support permeation functions, therefore filter bag can reach higher filtering accuracy and good gas permeability simultaneously, also can be convenient to deashing in addition.
It is the eptfe membrane of rejection rate more than 99% of the particle of 0.1 to 0.12 micron that the suggestion of micro porous filtration film can adopt particle diameter; Described inner bag then advises adopting Woven glass cloth to form (Woven glass cloth that such as Surface coating has PTFE base to lubricate enhanced protection layer is formed); Described eptfe membrane heat is overlying on Woven glass cloth.Above-mentioned eptfe membrane a kind of on polytetrafluoroethylmaterial material, forms the film of fibrous blind hole by stretcher strain (i.e. the implication of " varicosity ").This film itself has the feature of extremely strong hydrophobicity and not sticky ash, therefore not easily produces condensation and sticks with paste film phenomenon, and can be realized the purifying regeneration of film by back-blowing device easily.After Woven glass cloth Surface coating PTFE base lubrication enhanced protection layer, on the one hand due to PTFE base lubrication enhanced protection layer and the proximity of eptfe membrane on material, therefore eptfe membrane can be attached on Woven glass cloth more closely; On the other hand because PTFE base lubrication enhanced protection layer serves enhancing and lubrication to glass fabric, therefore greatly improve the wearability of glass fabric, enhance inner bag service life.
The mixed liquor of Woven glass cloth ptfe emulsion or polytetrafluoroethylene (PTFE) and graphite can flood and toast by the material of above-mentioned inner bag to be made.But the mixed liquor of glass fibre ptfe emulsion or polytetrafluoroethylene (PTFE) and graphite preferably floods and is woven as Woven glass cloth again after toasting and makes by liner material.Thisly first the mixed liquor of glass fibre ptfe emulsion or polytetrafluoroethylene (PTFE) and graphite to be flooded; toast again; finally be woven as the mode of Woven glass cloth; more easily guarantee that the Woven glass cloth made has desirable gas permeability, also make simultaneously PTFE base lubricate enhanced protection layer to Woven glass cloth coated more comprehensively thoroughly.Adopt the mixed liquor of polytetrafluoroethylene (PTFE) and graphite to flood, the lubricity (especially high temperature lubricating) of the PTFE base lubrication enhanced protection layer of formation can be made better.
As the further improvement to above-mentioned filter, in described casing, orifice-baffle support location structure is also installed, this orifice-baffle support location structure is disposed with at least two filter assemblies and through hole is installed, each filter assemblies is installed correspondence on through hole and is provided with one group of filter assemblies, and described filter assemblies comprises and to pass corresponding filter assemblies with the orifice plate that orifice-baffle support location structure removable seal connects and multiple openend and install the described filter bag that through hole is connected with described orifice plate.Make to define in casing by above-mentioned improvement the filter assemblies that at least two groups removably connect with described orifice-baffle support location structure respectively, filter bag on each filter assemblies can be externally mounted on the orifice plate of this filter assemblies at the casing of filter in advance, and then the orifice plate filling filter bag is connected in casing with orifice-baffle support location structure, thus it is adaptive to make filter assemblies and corresponding filter assemblies install through hole, like this can so that the assembling of filter and maintenance.
As the another improvement to above-mentioned filter, described filter bag blind end is provided with a rigid seal end cap, and place of sealing end cap bottom centre is provided with the drag hook be connected with elasticity pulling device, and one end and the inner support assembly of end cover connect as one.The crucial part of this modified node method is connected as one in the end of end cover and inner support assembly, thus, inner support assembly can either by filter bag radial location, again by being connected and axial location with end cover, thus limit inner support component activity further, reduce inner support assembly and the relative friction between filter bag, improve the service life of filter bag.
In addition, in order to improve the sealing between filter bag and end cover, described filter bag blind end is provided with inward flange, and this inward flange comprises the rigid toroidal support sheet with filter bag one, is provided with sealing ring between the upper end of this rigid circular seal sheet and the upper end outward flange of end cover." rigidity " of annular brace sheet refers to that annular brace sheet itself is made up of the material of rigidity, such as annular brace sheet is made up of annular steel disc, but, generally speaking certain radial deformation capabilities can be had, so that be encased in filter bag blind end outside filter bag blind end by end cover where necessary with regard to annular brace sheet.Rigid toroidal support sheet adds the integral rigidity of filter bag blind end, after between the upper end of rigid circular seal sheet and the upper end outward flange of end cover, sealing ring is set, sealing circle is extruded under the effect of rigid toroidal support sheet and end cover upper end outward flange, thus the sealing realized between filter bag and end cover, sealing effectiveness is reliable and stable.
For solving above-mentioned second technical problem, filter for gas solid separation comprises a casing, in described casing, orifice plate is installed, on orifice plate arrangement multiple one end open is installed and the other end close outside filtering type filter bag, the openend of described filter bag is arranged on orifice plate, the blind end of filter bag is provided with rigid seal end cap, described end cover is connected with the elasticity pulling device making the axial tensioning of this filter bag, this elasticity pulling device connects and elastic tension is in filter bag and filter bag blind end that outer and orifice plate keeps between the fixed component of setpoint distance, be positioned in described casing inside orifice plate is Primordial Qi room, be positioned at outside orifice plate is air-purifying chamber, casing is provided with and the air inlet of Primordial Qi room conducting and the exhaust outlet with air-purifying chamber conducting, casing is provided with the back-blowing device for carrying out recoil air-flow deashing to each filter bag, wherein, described filter bag blind end is provided with inward flange, this inward flange comprises the rigid toroidal support sheet with filter bag one, sealing ring is provided with between the upper end of this rigid circular seal sheet and the upper end outward flange of end cover.Rigid toroidal support sheet adds the integral rigidity of filter bag lower end, after between the upper end of rigid circular seal sheet and the upper end outward flange of end cover, sealing ring is set, sealing circle is extruded under the effect of rigid toroidal support sheet and end cover upper end outward flange, thus the sealing realized between filter bag and end cover, sealing effectiveness is reliable and stable.
For solving above-mentioned 3rd technical problem, filter for gas solid separation comprises casing, in described casing, orifice plate is installed, on orifice plate arrangement multiple one end open is installed and the other end close outside filtering type filter bag, the openend of described filter bag is arranged on orifice plate, be positioned in casing inside orifice plate is Primordial Qi room, be positioned at outside orifice plate is air-purifying chamber, casing is provided with and the air inlet of Primordial Qi room conducting and the exhaust outlet with air-purifying chamber conducting, casing is provided with the back-blowing device for carrying out recoil air-flow deashing to each filter bag, wherein, orifice-baffle support location structure is installed in described casing, this orifice-baffle support location structure is disposed with at least two filter assemblies and through hole is installed, each filter assemblies is installed correspondence on through hole and is provided with one group of filter assemblies, described filter assemblies comprises installs through corresponding filter assemblies the described filter bag that through hole is connected with described orifice plate with the orifice plate that orifice-baffle support location structure removable seal connects and multiple openend.Make to define in casing by above-mentioned improvement the filter assemblies that at least two groups removably connect with described orifice-baffle support location structure respectively, filter bag on each filter assemblies can be externally mounted on the orifice plate of this filter assemblies at the casing of filter in advance, and then the orifice plate filling filter bag is connected in casing with orifice-baffle support location structure, thus it is adaptive to make filter assemblies and corresponding filter assemblies install through hole, like this can so that the assembling of filter and maintenance.
Below in conjunction with the drawings and specific embodiments, the present invention is described further.The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of detailed description of the invention of the application's filter.
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Fig. 3 is the partial enlarged drawing at B place in Fig. 1.
Fig. 4 is the top view of Fig. 1 aperture plate supporting and location structure.
Detailed description of the invention
As shown in Figure 1, the typical structure of one that the application is used for the filter of gas solid separation is: filter comprises a casing 110, in described casing 110, orifice plate 120 is installed, on orifice plate 120, arrangement is provided with multiple upper end open and the outside filtering type filter bag 130 of lower end closed, the upper end of these filter bags 130 is arranged on orifice plate 120, the lower end of filter bag 130 is connected with the elasticity pulling device 170 making the axial tensioning of each filter bag 130 respectively, elasticity pulling device 170 connect and elastic tension below filter bag 130 and filter bag 130 and orifice plate 120 keep between the fixed component 180 of setpoint distance, the inner support assembly 131 making each filter bag 130 overall radial elastic tension is also provided with in each filter bag 130, described inner support assembly 131 specifically adopts the cylindrical cage structure 131a suitable with the inner chamber of filter bag 130, the external diameter of this cage structure 131a 0 ~ 1mm larger than the internal diameter of filter bag 130 when nature, to be positioned at below orifice plate 120 for Primordial Qi room 140 in casing 110, to be positioned at above orifice plate 120 for air-purifying chamber 150, casing 110 is provided with and the air inlet 111 of Primordial Qi room 140 conducting and the exhaust outlet 112 with air-purifying chamber 150 conducting, is provided with the back-blowing device 160 for carrying out recoil air-flow deashing to each filter bag 130 above casing 110.
" the bag cage " mentioned in above-mentioned cylindrical cage structure 131a and background technology is using essential distinction.For loose fit between bag cage and filter bag, its effect is only under filtration condition, prevent filter bag from producing interior flat higher than the air pressure of filter bag inside because of the air pressure of filter bag outside.The effect of the cylindrical cage structure 131a of the application is overall radial elastic tension filter bag 130, and namely filter bag 130 tightly collapses at cylindrical cage structure 131a outside.Due to filter bag 130 under the acting in conjunction of elasticity pulling device 170 and cylindrical cage structure 131a in axially, radial biaxial tension state, the deformability of filter bag 130 presents the intermediateness between rigid filter element and flexible filter element, during filtration only there is less radial deformation in filter bag 130, when implementing recoil air-flow deashing by back-blowing device 160 pairs of filter bags 130, filter bag 130 first can carry out being radially expanded more by a small margin under recoil airflow function, thus make the lower end of filter bag 130 upwards strain elasticity pulling device 170 further, and after recoil air-flow disappears, under the effect of elasticity pulling device 170 screen resilience, filter bag 130 produces axially by a small margin and the vibration of upper frequency, producing impels the particle making filter bag 130 surface from the shearing force of filter bag 130 sur-face peeling, thus the ash-removal effect improved filter bag 130.
In above-mentioned filter, filter bag 130 bag specifically comprises inner bag and the close attachment micro porous filtration film on outer surface of liner be made up of High-strength air-permeable fabric, longitudinal direction (the corresponding filter bag axially) hot strength >=520KN/m of described inner bag, transverse direction (corresponding filter bag is radial) hot strength >=380KN/m.More specifically, described micro porous filtration film employing is the eptfe membrane of rejection rate more than 99% of the particle of 0.1 to 0.12 micron to particle diameter; Inner bag adopts Woven glass cloth to form; Eptfe membrane is attached on Woven glass cloth.Need point out, the contents such as above-mentioned filter bag 130 properity have been described in detail in bibliography, and related content can with reference to the record of the document, and the application no longer repeats this.
Embodiment 1
As Fig. 1 ~ 3, the inner bag that the bag of filter bag 130 is made up of described eptfe membrane and Woven glass cloth is formed.The thickness of inner bag is 0.5 millimeter, and its longitudinal tensile strength is 580KN/m, transverse tensile strength is 430KN/m.Filter bag 130 length is 12 meters, diameter is 300 millimeters.Sealing ring 121 is provided with between the upper end sidewall of each filter bag 130 and the filter bag installing hole of orifice plate 120, the lower end of each filter bag 130 is all provided with rigid seal end cap 134, place of each end cover 134 bottom centre is all provided with the drag hook 134b connected with corresponding elasticity pulling device 170, end cover 134 and cylindrical cage structure 131a are component independent of each other, and the mode shown in the installation connected mode of end cover 134 and filter bag 130 and bibliography Figure of description 3 is identical.Elasticity pulling device 170 adopts spring cylinder, and one end of spring cylinder is connected with the bottom drag hook 134b of end cover 134, and the other end is connected with fixed component 180.The pulling force that each elasticity pulling device puts on corresponding filter bag is set as 40 kilograms.The external diameter of cylindrical cage structure 131a 0.5mm larger than the internal diameter of filter bag 130 when nature.During normal filtration, coal gas to be filtered enters Primordial Qi room 140 from air inlet 111, then under filter pressure, enters air-purifying chamber 150 (radial deformation of filter bag is very little) through filter bag, is filtered clean gas and discharges from exhaust outlet 112; When after the certain thickness dust of filter bag surface attachment, act on filter bag high-pressure pulse back-blowing air-flow by back-blowing device 160, filter bag produces axially the vibration of high frequency by a small margin, and the ash-removal effect of filter bag is good.
Embodiment 2
On the basis of embodiment 1, embodiment 2 further improves the structure of each filter bag 130 lower end.Specifically, as shown in Figure 3, the top of its end cover 134 and cylindrical cage structure 131a bottom welding are in order to one; In addition, each filter bag 130 lower end is also provided with inward flange, and this inward flange comprises the rigid toroidal support sheet 132 with filter bag 130 one, is provided with sealing ring 133 between the upper end of this rigid circular seal sheet 132 and the upper end outward flange 134a of end cover 134.Wherein, both can forming described inward flange by making rigid toroidal support sheet 132 be directly fixed on filter bag 130 lower end inner wall, also can form described inward flange by making described rigid toroidal support sheet 132 be typically entrapped within the flange of filter bag 130 lower end.Rigid toroidal support sheet 132 is made up of the steel disc of annular.Take in Fig. 3 by making rigid toroidal support sheet 132 be directly fixed on filter bag 130 lower end inner wall and form described inward flange.After end cover 134 is welded as a whole with cylindrical cage structure 131a, facilitate filter bag 130, the cage structure 131a being connected end cover 134 (is loaded filter bag 130 with the assembling of cage structure 131a in casing 110 by end cover 134 from top to bottom, simple and efficient), improve the globality of three simultaneously, decrease the wearing and tearing between filter bag 130 and cage structure 131a.The setting of rigid toroidal support sheet 132 improves the rigidity of filter bag 130 lower end, after between the upper end of rigid circular seal sheet 132 and the upper end outward flange 134a of end cover 134, sealing ring 133 is set, sealing circle 133 is extruded under rigid toroidal support sheet 132 with the effect of end cover 134 upper end outward flange 134a, thus realizes the sealing between filter bag and end cover.Contrast uses and finds, the significant sealing affection in embodiment 2 between filter bag 130 and end cover 134 is better than the sealing effectiveness in embodiment 1 between filter bag 130 and end cover 134.
Embodiment 3
On the basis of embodiment 2, embodiment 3 further improves the mounting means in casing 110 of each filter bag 130.Specifically, as Fig. 1, shown in 4, in described casing 110, orifice-baffle support location structure 190 is installed, in the present embodiment, orifice-baffle support location structure 190 is disposed with four filter assemblies and through hole 191 is installed (as shown in Figure 4, four filter assemblies install through hole 191 in plane rectangular array), each filter assemblies is installed correspondence on through hole 191 and is provided with one group of filter assemblies, described filter assemblies comprises installs through corresponding filter assemblies the described filter bag 130 that through hole 191 is connected with described orifice plate 120 with the orifice plate 120 that orifice-baffle support location structure 190 removable seal connects and multiple upper end.Wherein, described orifice-baffle support location structure 190 is specifically made up of the shaped steel be weldingly fixed on casing 110 inwall (specifically can select channel-section steel), it is be made up of housing that corresponding shaped steel surrounds that each filter assemblies installs through hole 191, described orifice plate 120 be threaded connection part 192 between shaped steel and be connected, orifice plate 120 and the mating surface of shaped steel are also provided with seal.Make in casing, to define the other filter assemblies removably connected with described orifice-baffle support location structure of Four composition by above-mentioned improvement, filter bag on each filter assemblies can be externally mounted on the orifice plate of this filter assemblies at the casing of filter in advance, and then the orifice plate filling filter bag is connected in casing with orifice-baffle support location structure, thus it is adaptive to make filter assemblies and corresponding filter assemblies install through hole, like this can so that the assembling of filter and maintenance.
Claims (10)
1. for the filter of gas solid separation, comprise a casing (110), orifice plate (120) is installed in described casing (110), the upper arrangement of orifice plate (120) is provided with multiple one end open and the outside filtering type filter bag (130) closed of the other end, the openend of described filter bag (130) is arranged on orifice plate (120), the blind end of filter bag (130) is connected with the elasticity pulling device (170) making this filter bag (130) axial tensioning, this elasticity pulling device (170) connect and elastic tension in filter bag (130) and filter bag (130) blind end outward and orifice plate (120) keep between the fixed component (180) of setpoint distance, being positioned at orifice plate (120) inner side in casing (110) is Primordial Qi room (140), be positioned at orifice plate (120) outside for air-purifying chamber (150), casing (110) is provided with and the air inlet (111) of Primordial Qi room (140) conducting and the exhaust outlet (112) with air-purifying chamber (150) conducting, casing (110) is provided with the back-blowing device (160) for carrying out recoil air-flow deashing to each filter bag (130), it is characterized in that: in described filter bag (130), be provided with the inner support assembly (131) making this filter bag (130) overall radial elastic tension.
2. as claimed in claim 1 for the filter of gas solid separation, it is characterized in that: described inner support assembly (131) has the cylindrical cage structure (131a) suitable with the inner chamber of filter bag (130), then the external diameter of this cage structure (131a) 0 ~ 1mm larger than the internal diameter of filter bag (130) when nature.
3. as claimed in claim 1 for the filter of gas solid separation, it is characterized in that: described filter bag (130) bag comprises inner bag and the close attachment micro porous filtration film on outer surface of liner be made up of High-strength air-permeable fabric, the longitudinal tensile strength >=520KN/m of described inner bag, transverse tensile strength >=380KN/m.
4. as claimed in claim 3 for the filter of gas solid separation, it is characterized in that: described micro porous filtration film employing is the eptfe membrane of rejection rate more than 99% of the particle of 0.1 to 0.12 micron to particle diameter; Described inner bag adopts Woven glass cloth to form; Described eptfe membrane is attached on Woven glass cloth.
5. as the filter for gas solid separation in Claims 1-4 as described in any one claim, it is characterized in that: orifice-baffle support location structure (190) is installed in described casing (110), this orifice-baffle support location structure (190) is disposed with at least two filter assemblies and through hole (191) is installed, each filter assemblies is installed the upper correspondence of through hole (191) and is provided with one group of filter assemblies, the described filter bag (130) that through hole (191) is connected with described orifice plate (120) is installed through corresponding filter assemblies in the orifice plate (120) that described filter assemblies comprises with orifice-baffle support location structure (190) removable seal connects and multiple openend.
6. as claimed in claim 5 for the filter of gas solid separation, it is characterized in that: described orifice-baffle support location structure (190) is made up of the shaped steel be weldingly fixed on casing (110) inwall, it is be made up of housing that corresponding shaped steel surrounds that each filter assemblies installs through hole (191); Described orifice plate (120) be threaded connection part (192) between shaped steel and be connected, orifice plate (120) and the mating surface of shaped steel are also provided with seal.
7. as the filter for gas solid separation in Claims 1-4 as described in any one claim, it is characterized in that: described filter bag (130) blind end is provided with a rigid seal end cap (134), place of sealing end cap (134) bottom centre is provided with the drag hook (134b) be connected with elasticity pulling device (170), and one end and the inner support assembly (131) of end cover (135) connect as one.
8. as claimed in claim 7 for the filter of gas solid separation, it is characterized in that: described filter bag (130) blind end is provided with inward flange, this inward flange comprises the rigid toroidal support sheet (132) with filter bag (130) one, is provided with sealing ring (133) between the upper end of this rigid circular seal sheet (132) and the upper end outward flange (134a) of end cover (134).
9., as claimed in claim 8 for the filter of gas solid separation, it is characterized in that: described rigid toroidal support sheet (132) is directly fixed on filter bag (130) blind end inwall and forms described inward flange; Or described rigid toroidal support sheet (132) is typically entrapped within filter bag (130) blind end flange and forms described inward flange.
10. as the filter for gas solid separation in Claims 1-4 as described in any one claim, it is characterized in that: described elasticity pulling device (170) adopts spring cylinder, one end of spring cylinder is connected with filter bag (130) lower end, and the other end is connected with fixed component (180).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154704.9A CN104740944B (en) | 2015-04-02 | 2015-04-02 | Filtering device used for gas-solid separation |
| PCT/CN2015/088604 WO2016155223A1 (en) | 2015-04-02 | 2015-08-31 | Filtering device for gas-solid separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154704.9A CN104740944B (en) | 2015-04-02 | 2015-04-02 | Filtering device used for gas-solid separation |
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| CN104740944A true CN104740944A (en) | 2015-07-01 |
| CN104740944B CN104740944B (en) | 2017-04-12 |
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| WO2016155223A1 (en) * | 2015-04-02 | 2016-10-06 | 成都瑞柯林工程技术有限公司 | Filtering device for gas-solid separation |
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| KR20180095072A (en) * | 2015-12-23 | 2018-08-24 | 에어 프로덕츠 앤드 케미칼스, 인코오포레이티드 | Systems and methods for filtering gas-solid mixtures |
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| Publication number | Publication date |
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| WO2016155223A1 (en) | 2016-10-06 |
| CN104740944B (en) | 2017-04-12 |
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