CN85107005A

CN85107005A - Filter plant

Info

Publication number: CN85107005A
Application number: CN 85107005
Authority: CN
Inventors: 罗宾·米勒德
Original assignee: Tilghman Wheelabrator Ltd
Current assignee: Tilghman Wheelabrator Ltd
Priority date: 1985-02-19
Filing date: 1985-09-16
Publication date: 1986-08-13
Also published as: BR8504582A; AU4737885A

Abstract

This is a filter, comprises the filter bag of rectangular pleating fabric system, an internal support cover made from metal or plastics, and this cover is hard and be easy to dismounting.Pleating bag has an openend and a blind end.Openend combines with a perforated plastic tail-hood, and respectively has groove to detain mutually.Blind end can be itself sealing or the sealing of an available nonporous plastic tail-hood.

Filter can directly be put or traverse in the shell of filter plant.If traverse more can a plurality ofly vertically stack.

Relatively play filter in the past.The present invention lays in the space identical, and the area of bigger filtration fabrics is provided.

Description

Filter plant

The equipment that the present invention relates to filter, especially those are as industrial use, and focus on the used filter of this equipment.

The industry filter plant now just is being widely used in the air pollution control aspect.In short, its function is the floating substance in the separation of air, and this material is collected in the filter plant, removed then, and the air after the cleaning then is transported between atmosphere or air circulation system.Any is arranged is understandable, is exactly to reach " air " that claim is mentioned here.Be to separate to make any gaseous mediums.

The used filter plant of industrial quarters is all used bag shape or cylindrical filter usually now.

Bag shape filter is normally made with the filterability fabric, and they all are the bags of tubulose, and the bag wall that stretches is generally all arranged, and cross section circular or that elongate, and latter event often is called " pad ".In general, all there is the facility of support their inside, when preventing that air from running into the inside from the outside, has the phenomenon of decaying.

The operating period of this class filter bag is influenced by several factors, especially the surface area of filter bag.And under dissimilar duties, their operating period can become very of short duration.

Filter bag will often be replaced.And because each filter bag all has many securing members, they all are fastened on each filter bag in the grid in the filter plant, and each filter bag is fastened in the grid of Turbogrid plates, so replacement work is effort very.Old in order to replace with new filter bag, need dismantle filter plant partially.

Cylindrical filter a plate is all respectively arranged usually, and one of them runs through end to end.Be exactly to filter partly between them, this partly can be pleating.Two boards is to be filtered partly to connect, and the latter is then for inside and outside perforated wall or cover to be fixed and reach support.The fraud point of cylindrical filter, exactly after the operating period finishes, whole filter cylinder all needs to replace.Because they can be described as disposable element, concerning the user, this filter plant is very expensive.

Purpose of the present invention provides a filter, is applied in the filter plant, in order to get rid of or to alleviate above-mentioned shortcoming.

According to the present invention, this filter comprises the filter bag that a pleating in advance fabric of usefulness is made.A this bag wherein end closed, and the other end is then opened, and combines with a plastic cement tail-hood molded, perforation.

Be more preferably afterbody run through the plastic cover and the openend of pleating filter bag in advance, combine with the method for molding.

The cross section that is more preferably filter bag and tail-hood is generally rectangle.

Be more preferably the cross section of filter bag, the pleating abutment wall of pair of parallel is arranged; The wall on two sides is flat simultaneously in addition, and another side is prismatic or ridged.

The end that filter bag is closed can be that itself is closed, or with the moulded plastic plate of an atresia it be closed.

Filter is that a demountable inner cover of strengthening is arranged preferably, is positioned over the filter bag the inside that pleating fabric is made.This cover itself has it to stretch thing, injects the pleat hole of filter bag and the recess the inside of tail-hood separately.

Being preferably inner cover is to be fixed on the overlay that runs through, and abuts then on the perforation plastic cement tail-hood of mold pressing of filter bag.

Utilize subsidiary picture, specifically describe the present invention now.

Fig. 1 is the pleating filter bag part perspective view of an invention.

Figure 1A is the some of Fig. 1, through the detailed demonstration after amplifying.

Figure 1B is the detailed part perspective view of external reinforcing structure, and according to the present invention, this strengthens structure, can be applied on the pleating filter bag.

Fig. 2 is the method for sewing that explains orally pleating filter bag.

Fig. 2 A is the detailed demonstration of an end of pleating filter bag sealing.

Fig. 3 makes the method for pleating filter bag with respect to Fig. 2 in order to another kind to be described.

Fig. 3 A shows an end of pleating that sealing of filter bag made from Fig. 3 method with respect to Fig. 2 A.

Fig. 4 is a plane, explains orally the pleating filter bag made from sewing method.

Fig. 5 is shown, in order to explain orally the sewing method of another kind of pleating filter bag.

Fig. 6 is a perspective view, shows the pleating filter bag assembling after making, and how to install between clean air, puts then in the shell of the equipment of filtration.

Fig. 6 A is the part detailed perspective view of the closed end of pleating filter bag that is sewn into.

Fig. 7 is according to the present invention, and another method of sewing is described, the detailed perspective view of the filter bag closed end of making.

Fig. 8 is according to the present invention, the part perspective exploded view of the pleating filter bag made from pattern making equipment.

Fig. 9 is the amplification detailed perspective view of pattern making equipment shown in Figure 8.

Figure 10 is according to the present invention, in order to the demonstration figure of the improved pattern making equipment of making pleating filter bag.

Figure 11 is the plane that facility is strengthened in a hard inside, is applicable to the pleating filter bag shown in Fig. 1 to 1B.

Figure 12 is the sectional view of the online 12-12 of Figure 11.

Figure 13 is the sectional view of the online 13-13 of Figure 11.

Figure 14 is according to the present invention, includes demonstration figure filter bag, simple filtering equipment that pleating fabric is made in.

Figure 15 is according to Figure 14, and the first half of filter plant is done the diagram of perspective, and the additional portions of this equipment is described.

Figure 16 is a decomposition diagram, illustrates between the clean air of filter plant of Figure 14 and 15.

Figure 17 is according to the present invention, to pleating filter bag, and the decomposition diagram of the Turbogrid plates of being placed.

Figure 17 A is a part perspective view after the amplification, and the pleating filter bag of Figure 17 is described according to the present invention.

Figure 18 is a sectional view between the clean air that passes the filter plant shown in Figure 14 and 15.

Figure 18 A is the detailed demonstration after the amplification.Be according to the present invention, enter into the valve of impulse jet cleaning system in order to a control air-flow to be described, this system is used for pleating filter bag.

Figure 19 is according to the present invention, points out that two classes assemble the pattern of pleating filter bag.

Figure 20 be the explanation another make the plane of pleating filter bag method.

Figure 20 A is with respect to Figure 20, and the filtration fabrics under pleating situation is described.

Figure 21 is according to the present invention, illustrates that the vertical section of another kind of pleating filter bag shows.

Figure 21 A is a detailed part perspective view, and an end of the pleating filter bag opening of Figure 21 is described.

Figure 21 B is the plane of a part, and an end of the pleating filter bag opening of Figure 21 is described.

Figure 21 C is the detailed demonstration of pleating filter bag opening one end of Figure 21, filter bag is stable in one of them method of a certain position in order to explanation.

Show with reference to the accompanying drawings (seeing Fig. 1 to 1B) that the filter 30(that pleating fabric is made sees Figure 17), can replace old filter bag or filter pad or cylindrical filter.This pleating filter comprises the rectangle filter bag 31 that a pleating fabric of usefulness is made, and wherein an end combines with the tail-hood 32 of a perforation.This tail-hood is to use plastic cement manufacturing, especially polyurethane, and add the one skilled in the art known filler and colorant, to reach required characteristic, for example pliability, rockiness and time hardening.

Pleating filter bags 31 is to be made by pleating in advance fabric.This kind fabric generally is used to make filter bag or pad.The fabric in pleat hole 33 is that the plastic cement flange with tail-hood 32 links closely, and combines.Can see from plane, be that tail-hood has the inside of itself to play the pleat structure, promptly a succession of in harness fossula 34.

Pleating filter bag 31 other ends close.Closed method can connect into a structure 35(who seals to fabric itself and see Fig. 6); Or plastic cement (for example polyurethane) the tail-hood 36(that each end of pleating filter bag 31 is attached to an atresia sees Fig. 7).In the case, linking closely significantly with inside and outside the tail-hood 36 of atresia in fabric pleat hole 33.

Pleating filter bags 31 can be with the manufacturing of any method easily.

Manufacture method is with method of sewing it to be united preferably, sees Fig. 2 to 5.

For example the shown filtration fabrics of Fig. 2 and 2A is arranged with a series of pleat hole 37.The method that these pleat holes can be pressed with heap is in advance made.The length in pleat hole 37 is that the abutment wall height more double than the filter bag that will finish 31 is long.

Shown in 38, be two V-shaped sections that link to each other but separate, form in pleat hole 37 middle partly cuttings longitudinally, then line of cut 39 is tightly united by a seam.Pleat is cheated the otch part 38 in 37 outsides, can in support point 40 supports, does 90 ° stubborn commentaries on classics then, and forms the pleating limit wall 41 of filter bag 31.A closed end 42 is that the center that is sewn partly limits.Breach 43 in the tail wall 44 can be sewn onto on the tail wall with the filtration fabrics 45 of a rule.

Fig. 3 and Fig. 3 A each partly with respect to Fig. 2 and 2A, its identical part with suffix " A " to compare.

But cut off in the case, be rectangular

tangent plane

46,47 indicated be as the lines of sewing up.

Fig. 4 is shown, is the closed tail wall 48 of one side, is sewn onto parallel pleating limit wall 41A.That tail wall is triangular in shape or the structure of ridged, thereby when pleating filter bag 31 is attached to pleating fabric filter 30, one end of opening is laterally put, and closed tail wall 48 is the tops (seeing Figure 19) that place filter 30, thereby prevents that ash fall from getting off.

Another side tail wall (not show) can be the structure of leg-of-mutton or ridged, but all is smooth generally, or alike with tail wall 440 minutes.

Those follow Fig. 2 or the identical part of 2A Fig. 5, all use suffix " B " to indicate respectively.Pleat hole 37B in the position 49 by simple cutting and separately tightly sews up parallel cut edge 50 then.

Therefore under plane shows, pleating filter bag 31(sees Fig. 1 to 6A) all be rectangular usually, and the tail wall 51 of a ridged arranged, the tail wall 52 that one side is quite smooth, a pair of plays the limit wall 53 of pleat, a stitching closing end 54 that form, pleating, and an openend 55 that combines with perforation plastic cement tail-hood 32.

In order to follow 32 combinations of plastic cement tail-hood to pleating

textile bags

31,56 indicated device for molding all are subjected to adopting (seeing Fig. 8 and 9) usually.Device comprises a base plate 57, lay model 58 above it, this model is preferably with plastics (polyurethane) and makes, and has its pleat hole peripheral, mutually attached with the pleat hole structure of pleating filter 31 inside of sewing up, the height of model 58 or depth difference seldom are exactly the required thickness of tail-hood 32.

Upwards hoping from model 58, is a series of vertical panel 59, is welded on the connecting plate 59A.Every vertical panel is all relative with the protruding position 60 of model 58, and adjacent protruding position 60 forms a pleat hole.Being assemblied in

plate

59 and 59A on the vertical column 61, is demountable.Utilize designs such as bolt, molding or pod, those vertical columns removably are connected on the model 58.Plate assembly 59 stretches to the two sides, stops at an end 62 of ridged and the more flat other end 63.

In order to guarantee that pleating filter bag 31 tightly joins with model 58, the outside has a pair of to be used as the ear of maize 65 of clamping, only shows wherein one side at the limit on two sides wall 53(accompanying drawing respectively), filter bag and model are clamped.Those protruding positions 66 can adjusting position, makes it reach fully and firmly puts filter bag other pleat hole into, also is convenient to simultaneously remove, and can makes the contact of filter bag 31 and model 58 tightr.Those can be fixed together with clamp or screw as the ear of maize 65 that clamps purposes, remove also very conveniently, and perhaps sucking fit simply also can be close together their end with hinge.Certainly, even if also be not no problem as the ear of maize that clamps purposes.If have as the ear of maize that clamps, handle 65A can be so that installation and dismounting plate 59 make them follow pleating filter bag 31 tightly to lock together.

Decision tail-hood 32 molding spaces include base plate 57, the wall or the ear of maize at four sides, two sides afterbody 67 and limit, two sides wall 68, this limit, two sides wall can be fixed to 70 li of the pits of base plate 57 with stopper 69.Every rod or

wall

67 or 68 all have handle 71, so that change and be placed on the base plate 57.Those ears of maize or

wall

67,68 also define around the rectangular support frame of model 58.

Rectangular support frame

67,68 are put into around the place of model 58, then that an end of pleating bag 31 openings is downward, it is position mentioned above, with the plastics that flow, for example polyurethane is added required characteristic, pour the place of wanting molding again into, till its degree of depth is very approaching with the thickness of model 58.As patternmaking process required, in the end during the phase, add releasing agent needs the surface of separating, for example base plate 57 and model 58 to pleating filter bag 31 or tail-hood 32.

The height of ear of maize or

wall

67 and 68 can be the same with the height of model 58, or even higher.

After waiting for that plastics solidify, just can ear of maize or

wall

67,68 get from, remove the ear of

maize

65,66 of clamping usefulness and the pleating filter bag that is combined with tail-hood 32 stand-by simultaneously.

That pleating filter bag 31 can be placed into a position that Open Side Down, then with the suspension bracket suspention, so that peace is fitted on the model 57 to 68.

Except with the vertical panel, also availablely see Figure 10 with the similar model 72(of model 58 shapes), surely come on the pillar 61.Only show two models among the figure, and general number is all more than two, and dense coming together.

If pleating filter bag 31 needs the plastic cement tail-hood 36 of an atresia, will use another patternmaking process.And this program generally all is to carry out after the molding of tail-hood 32, and model 58 saves, and the plastics that flow can be fed to the inside and outside molding space of pleating filter bag 31.If necessary, can stablize the arrangement that pleat is cheated, be gripping on the tail-hood 32 with seasonal pleat hole with one or how detachable ear of

maize

65,66.

Certainly, the inside and outside cross section of tail-hood 32 is moldings simultaneously.In the case, the inside model of pleating filter bag 31, then there is protruding position the outside, makes the fixed-site in its pleat hole.

Though above-mentioned pleating filter bag, its cross section all is rectangle, and the one skilled in the art is that the shape of understanding other also is operable, for example triangle, tubular or polygonal.That cross section shape can be consistent, also can be to dwindle gradually.

Though above-mentioned filter bag is all used the fabric manufacturing, the one skilled in the art is clear, and other have the material of filter efficacy, and for example felted terxture, plastics, paper or its mixture can be used.

For simplicity, reach the mentioned filter material of claim here and all be referred to as fabric.This fabric can be pleating with any method easily, the method known to for example general pleating machine or other one skilled in the art.

Utilize the hard plastics of a rule, be welded to then on the pleat line of fabric, nationality is to cause the pleat hole.As the pleat hole than the wedge angle degree will be arranged, can be with the cross section strip of triangle is arranged.

Above-mentioned

pleating filter bag

31,32 has a detachable internal support cover 73, forms Figure 12 to 13,17 and 17A shown in filter 30.

This inner cover 73(especially sees shown in Figure 12 to 13), be to form with two sections steel wire bar seam, particularly can also itself be exactly a hard plastic cement cover.Inner cover 73 has a central opening 74, have a series of ear of maize 75 from here to overhanging, every ear of maize all places the pleat hole of

pleating filter bag

31,32.

More particularly, be above-mentioned

pleating filter bag

31,32, if openend is at the top, support cover 73 to comprise a netted core 76, the oblong openings 74 in the middle of this core is then determined.

Utilize crooked afterbody 77, ear of maize 75 can be connected to netted core 76, and to overhanging, is welded in the face of connecing 78.An end therein simultaneously has a ridge structure 79 that is formed by steel wire bar.

Therefore, inner cover 73 can be regarded a latticed fine workmanship's structure as, each ear of maize 75, and each pleat that is stretched over

pleating filter bag

31,32 is cheated; The structure 79 of that protuberance simultaneously also is coupled to the tail wall 48 of

filter bag

31,32 ridgeds.Inner cover 73 can become the wire screen of a pleating structure with another kind of method pleat.

Inner cover 73 is to be connected with a top cover 80, makes it can set up pleating filter bag 30, forms filter plant.Top cover 80 has a rectangular opening 81.It can be placed on the big short metre for poems that contains relatively few syllables of top cover 80 on the tail-hood 32, and the former flange 83 makes it tightly join with the latter's edge simultaneously.

In this device the inside, top cover 80 has one upwards the pipe of the direction of inner cover (promptly away from) elongation to chew or pipeline 84, and this can mention after a while more in detail.

Inner cover 73 can be seam, also can be whole structure.

Sometimes, except the support cover 73 of inside, also need add extra support in the periphery of pleating filter bag 31, especially working as filter bag itself has in the equivalent length.Add one than the support cover 85 of filter bag in the periphery, just can reach required purpose (seeing Figure 12) than weak point.This cover 85 can be formed by two hood-shaped constituent elements merging that separate simply, and limit, the two sides wall with pleating bag is relative respectively.This two hood-shaped constituent element can connect with hinge, and utilizes around free-ended bolt or clip are fixed on filter bag 31.

No matter peripheral cover 85 is any structure, all has its ear of maize or similar part 85A to be positioned in the pleat hole of filter bag; And protuberance one end 85B is arranged, be used for placing an end of filter bag 31 ridgeds.

The method that another is supported in the periphery is one or more plastics (for example polyurethane) strip 86, the average outer surface (seeing Figure 1A and 1B) of arranging the ground molding to pleating filter bag.Those strips 86 combine with pleating filter bag 31.This strip is as shown in FIG., and is downward-sloping, makes the pleating filter bag contact of not making peace of those granule materials.

Extension tubing mentioned above is chewed or pipeline 84 and top cover 80 seam, and its cross-sectional area converges to top cover 80.

Utilize limit, two sides wall 87, and two sides tail wall 88, the position of qualification central partition wall, they all are connected to roof, as the effect of consolidating.

Pipe is chewed 84 cross-sectional area, is less than opening 81 areas of top cover 80.

Pipe is chewed each face tail wall 88 of 84, a semicircular recess 90 is all arranged at a higher end.

Pipe is chewed 84 an adhoc approach is provided, and pleating filter bag 30 is abutted against on the filter plant, and this point will told about after a while.

The one skilled in the art recognizes, filter plant is can be because of the needs of duty, and very big difference is being arranged aspect structure and the size.And the number and the layout of the filter of filter plant the inside are also because of dealing with different work difference to some extent.

In general, filter plant comprises one " between muddy air " and one " between clean air ", and both are separated by the Turbogrid plates in a hole with holes, and each hole is filled out and put a filter.No matter that is the filter design of what type, its purpose all is to be to permit air-flow from " between muddy air ", enters " between clean air ", then dirt, dust and other refuses etc. that are driven by " between muddy air " air-flow, all intercept, make them stay on the filter with filter; Air itself then can see through the porous filter medium of filter, enters " between clean air ", takes between atmosphere again or required air circulation system.Accomplish above-mentioned compartmentation, known each filter of one skilled in the art is if be separated from each other, and all includes one and be stretched over the close design of envelope of " between muddy air ", and the other end is at " between clean air " opening then.This class filter all is filter bag or filter pad or cartridge type filter usually.There is a hood-shaped supporter inside that the above two are own; And the latter is an element that meeting is thrown aside fully, and filtering medium and inside and outside support just all can be when filter can not re-use, and abandoned together, this way is very expensive and uneconomic.Just general at last filter bag or filter pad, in the reasonable time using after, also can lose effect.In this case, the one skilled in the art is known will partly taking whole filter plant apart, replaces new filter bag or pad old.

Pleating filter bag shown in the present can substitute traditional filter bag or filter pad or cylindrical filter, is very easy because it is installed in the whole filter plant, and convenient the replacement.Installing and replace easily, is because pleating filter bag 30 has the tail-hood 32 that combines.

According to the present invention, it is foolproof that pleating filter bag is fixed on its Turbogrid plates.Way is with bolt tail-hood and Turbogrid plates to be run through, and can insert a block protection metal cover board in the centre; Or available clip joins on the tail-hood, clips Turbogrid plates then, and also available baffle is put in wherein.In general, metal cover board is the component part (visible top cover 80) that can form the internal support cover.But the place that has any to readily understand is that the internal support cover not necessarily needs that piece cover plate, and its structure can be the simple beam shown in Figure 11 to 13, but deducts top cover 80 and pipe chews 84.Significantly, no matter the internal support cover is metal or plastic cement, and its tangent plane structure cooperates with pleating filter bag.

Relatively play traditional filter bag or cylindrical filter, under identical volume, rectangular pleating filter bag has big a lot of filtration fabrics area, also thereby higher cleaning speed arranged.

The one skilled in the art also knows for such filter plant, the method for cleaning filter bag, filter pad or a cylindrical filter to be arranged, dust and the soil release built up, to prolong the operating period of filter.If there is not this class method for cleaning, can be lost its function by dirt obstruction just filter is very fast.

Three main adopted clean methods are: utilize mechanicalness to shake or vibrate, but this method only is applicable to filter bag, and is not suitable for cylindrical filter; Utilize reciprocal air-flow to clean, just with generally between " muddiness " air to rightabout air-flow " cleaning " air; Or utilize general strong pulse jet-stream wind, and intermittent transmission is to the inside of filter, and its air pressure can reach 25 to 100 ft lbfs per square inch, to receive the vibration effect, assists to remove the dust and the dirt that are attached to filter surfaces.In three kinds of methods, back two classes are applicable to any above-mentioned filter.

According to the present invention, the method for three kinds of cleaning filters all is applicable to the filter bag that is pleating.But comparatively ideal, be to adopt the impulse jet method of cleaning, and pipe is chewed 84 and is installed for this purpose exactly.

The design of hereinafter mentioning please refer to Figure 14 to 18.

A filter plant comprises a shell 100, utilizes support column 101 supports on the ground, and dust collection place is arranged at the bottom of shell, and the funnel 102 that the cleaning effect is arranged, and dirt discharges then by the valve 103 of funnel bottom.

Shell 100 the insides have between one " muddiness " air 104, and it has an inlet 104A, so that have the air cleaning of impurity such as dust, dirt or leach.105 is between " cleaning " air, has a Turbogrid plates 106(who places filter bag to see Figure 17), it is followed between " muddiness " air opened in 104 minutes.

In this situation, Yishanmen 107 is arranged at 105 top between " cleaning " air, is had the capping 108 of " cleaning " air outlet slit 109 to cover by one, and this capping has the characteristic of detachable and noise-decreasing.One fan and

motor apparatus

110 and 111 are arranged above the roof door 107, enter shell 100,, enter between " cleaning " air 105 more then by between " muddiness " air 104 as the air that extracts " muddiness ".Certainly, this strand air-flow is once to pass through the pleating filter bag 30 that is arranged in above the Turbogrid plates 106.

Can be seen by Figure 17, be a lot of holes 112 are arranged above the plate 106, and as the usefulness of admitting and laying pleating filter bag 30, the shape in these holes is with the form fit of filter bag 30.

Cooperate.

Shown in Figure 17, three Turbogrid plates 106 are arranged, all can lay four pleating filter bags 30 for every, these Turbogrid plates utilize bolt 113 that they are abutted against together.The expert is clear, and the above-mentioned Turbogrid plates area that is used for the supporting filter fabric is more much bigger than the Turbogrid plates of traditional filtering equipment, and this is because the structure of pleating filter bag is rectangular.

Very clear above-mentioned filter plant is a common example, is used for illustrating the general known arrangement method of this kind equipment.This example does not wish to limit the scope of application of pleating filter bag, only wants to illustrate their widely-used degree on industrial filter plant.

As mentioned above, pleating filter bag 30 of the present invention might not be cleared up with the impulse jet air-flow, but this method more can firmly be included pleating filter bag 30 on the Turbogrid plates 106.This existing cleaning, again the device of firm effect arranged, just we on February 19th, 1 main idea No. 85 04267, the patent application of Britain's registration.It not is on pleating filter bag or the filter pad that this design also can be applicable to, for example general filter bag or pad.This installs especially, also the place of the desired protection of another patent application just.

Chew 84 as for pipe, can know from Figure 13 and see, it is nozzle in the venturi that this pipe is chewed, to obtain required impulse jet cleaning gas tream.

Figure 16 is that 105 decomposition shows between " cleaning " air.It comprises the rectangular wall 114 of one side, and two fan doors 115 are arranged at the top, utilize clip 116 to abut on the wall 114.Also have a pressurized container 117 and an air register device 118 that links to each other, at the afterbody of antetheca 114, as the impulse jet pipe 119 of controlling compressed air, making air-flow periodically be transported between two afterbodys that are positioned over wall 114.

According to the indication of Figure 18, every pulse playpipe 119 has hole 119A(or the slit or the hole groove of giving vent to anger in the bottom).Every playpipe 119 all is placed on venturi tube and chews on 84 the tailgate 88, and within semicircle recess 90.Significantly, playpipe 119 can be placed on two or more pipes of arranging filter bag together and chews on 84.A wherein end of every playpipe 119 is the plates 120 at angle together, utilizes bolt device 121, abuts on the bracket 120A.The other end of impulse jet pipe 119 is inserted in above the pipeline 122 of pressurized container 117.Pipeline 122 injects between " cleaning " air 105, caters to playpipe 119, and at the other end towards watertight aircase 117.Wherein end at watertight aircase 117 has a compressed air inlet 123, and the compressed gas supply from compressed air supply (demonstration is not arranged) is constantly arranged.

Therefore playpipe 119 provides a simple but effective method, makes pleating filter bag 30 be fixed on the Turbogrid plates 116.When replacing the pleating filter bag 31 that to work again, in 32, door 115 between " cleaning " air of just opening correspondence of doing, loosen the bolt 121 that is right after playpipe 119, and playpipe 119 got from pipeline 122, move pleating filter bag 30, and throw aside pleating

filter bag

31,32, again lay a new

pleating filter bag

31,32 and strengthen on the facility 73, filter bag 30 is put into grid under it to inside, playpipe 119 is inserted in the outside of its targeted duct 122 separately, and then bolt 121 is locked.Covering door 115 can latch again.Arrive this, filter plant can reuse.

Significantly, this design can simply and effectively be stable at suitable position to pleating filter bag 30; But unlike existing filter bag or filter pad, a lot of fixtures is arranged, the order separate tear open very inconvenient.In the present invention, that do just unclamps a bolts, then playpipe 119 is moved.

Under normal circumstances, a barrier film valve 124 is arranged, prevent that compressed air from entering pipeline 122, arrives playpipe 119 then.One passage 125 that loses heart is arranged, and nationality barrier film valve 124, is connected to pressurized container 117, so this barrier film can be compressed air to close and closes.

A magnetic valve 126 is placed on the fence 127, and on the wall of pressurized container 117, and watertight aircase 117 and barrier film valve 124 forms a space 124A to this fence 127 diaphragm clip, and passage 125 is connected with losing heart.The operation of magnetic valve 126 causes compressed air 124 to enter valve from the space, is discharged between atmosphere from exporting 129 then.Simultaneously, barrier film valve 124 is away from a wherein end of pipeline 122, thereby permits one compressed air stream and enter injection pipe 119, pleating filter bag of directive or filter 30 again, and nationality vibration and is received the effect of cleaning.Magnetic valve 126 and then plays a role, and the barrier film valve is compressed the gas extruding, and pipeline 122 is closed, and cuts off air-flow.

Utilize electronic circuit, magnetic valve can periodically be worked.About the operation of these magnetic valves, because the expert is very familiar to the impulse jet cleaning in industrial filter plant scope, so do not describe this system here in detail.

Figure 19 illustrated pleating filter bag 30 except as mentioned above vertically put, but also traverse.If becoming, traverse, the part 48 of that ridged be placed on end face.Pleating filter bag of the present invention can traverse, is still not to be people's benefit clearly so far.Prior, be that the filter bag of traverse can vertically stack togather, make that the filter bag area can increase greatly under the shell restriction of equal volume.Seen in the figure, just the pleating filter bag of two traverses stacks togather.Certainly, just four at last, or more number also is possible.

Figure 20 and 20A show the method that another is pleating.One deck filtration fabrics 135 flatly lay, and has very hard plastic cement strip 136 to be arranged in parallel thereon, has formed top 137 parts of pleated condition.Fabric 135 and strip 136 can combine with any method easily, for example: stickup, seam or stitching.

According to Figure 21 to 21C, indicated is the pleating filter bag 140 of another kind of circular tangent plane.But everybody Dou Ming Liao's, the tangent plane of other shapes also is possible.

In this example, 141 the indication be pleating in advance filter bag.Internal support cover 142 comprises a molded plastic cement annulation 143 that forms, and this annulation has tooth-shape structure 144 outwards to stretch, and cooperates with the pleat hole of filter bag.This annulation 143 has determined an end of pleating filter bag 141 openings.Inner cover 142 also includes a succession of metal or the plastic cement ear of maize 144 of annular spread.If those ears of maize have metal or teething ring 145 to connect, and are then even more ideal.These ears of maize 144 are connected to annulation 143 on the molded plastic cement plectane 146.The outer groove structure that is with of this plectane, the groove of its shape and size and annulation 143 is just the same.

Internal support cover 142 comprises an annulation 143, ear of maize 144,145 and plectane 146.If tubular filter bag 141 be placed on inner cover 142 around, to paste together both are steady surely.Method is a separation link 147 of utilizing outer those plastic moldings to form, this link 147 groove structure 148 arranged in interior week, coincide with peripheral groove structure 144.Utilize one or more clips or fastener 149, can be fastening and be locked on filter bag or the pipe separating link 147, make it be fixed in suitable position round internal support cover 142.

Filter bag 141 can itself have an end of its closure, and in this case, plectane 146 and relative outer shroud 147 thereof can save, and the internal support cover is then at above-mentioned blind end, with a loop configuration as terminal.

The capping of pleating filter bag afterbody can form with the involution of pleating filtration fabrics itself.

Relatively play existing filter bag, the filter that rectangular pleating fabric of the present invention is made has following special advantage aspect purposes:

(1) in fixing filter spatial accommodation the inside, bigger filter area is arranged.

(2) because its design is elongated shape, so preferably air-flow character is arranged.

(3) ratio of its opening ÷ length provides the situation of clearing up preferably.

(4) high efficiency filtration.

(5) it is comparatively easy to remove filter cylinder.

(6) be a multiduty filter, can select different filter cylinder layouts with control volume size, be fit to most application and specific place.

(7) assembly can use individually; Also can stack, become large-scale assembling.

Utilize rectangular pleating filter bag to replace general tubular filter, maximum benefit, Be when the operating period finishes, only need pleating bag is discarded; And need not as the tubular filter, want whole abandoning.

Claims

1, filter comprises the filter bag that a pleating in advance fabric of usefulness is made, and this a bag wherein end seals, and the other end is opening and a tail-hood with holes that forms with cut foundry pattern is arranged.

2, the filter of claim 1, wherein, plastics tail-hood with holes is to combine with die-manufacturing method with filter bag openend that pleating fabric is in advance made.

3, the filter of claim 2, wherein, the interior closed structure of tail-hood is that the pleat hole of the filter bag made with pleating fabric in advance coincide.

4, any one filter of claim 1 to 3, wherein, the tangent plane of filter bag and tail-hood generally all is rectangular.

5, the filter of claim 4, wherein, there is the parallel and pleating limit wall of a pair of in the cross section of filter bag, and wherein an end is to be connected with a smooth wall, and the other end then is connected with a ridged or wall triangular in shape.

6, the filter of claim 5, wherein, tail-hood is rectangular, area is greater than the cross-sectional area of filter bag, and the shape in the hole of tail-hood conforms to the filter bag transverse cross-sectional shape.

7, the mentioned filter of any claim 1 to 6, wherein, filter bag is to sew up with pleating in advance filtration fabrics to form.

8, the filter of claim 7, wherein, pleating in advance filtration fabrics is arranged with the strip form, and strip is length than the degree of depth of twice filter bag; Its width then with pleat hole wherein one face the wall and meditate identical.Those pleat holes are transversely arranged abreast.The part that filtration fabrics cuts into separately and links to each other, forms two hinge positions, thereby the strip in their outsides can break partly and change 90 °, formation rectangle filter bag plays the limit wall of pleat; Otch is sewed up then, has partly formed an end of rectangle filter bag closure with the center of pleating fabric.

9, the filter of claim 8, the limit wall of rectangle filter bag is to connect together with sewing method with the tail wall partly.

10, the filter of claim 9, wherein, under plane showed, having a tail wall at least was triangular in shape or ridged.

11, the filter of claim 8, wherein, filtration fabrics is cut simply, cuts with scissors the position to provide, and any part that need not remove filtration fabrics.

12, according to any one claim of 1 to 6, the manufacture method of the filter bag that pleating in advance fabric is made comprises these steps: with the method for molding, pleating filter bag openend round a model, the peripheral structure of this model is to cooperate with the pleat hole of filter bag, model is determined the wall of filter bag tail-hood peripheral shape to center on, between this wall and model, inject the plastics that flow, make it be connected with the openend of pleating filter bag, after plastics solidify, can take the pleating filter bag that combines with tail-hood away.

13, the method for claim 12 comprises that one makes the peripheral stable step of pleating filter bag when patternmaking process, and the pleat hole still keeps normal and average and arranges.

14, claim 12 or 13 method, the plastics of its use are polyurethane.

15, filter bag that the pleating in advance fabric of usefulness is made, its manufacture method is any one according to claim 12 to 14.

16, any one filter of claim 1 to 11 comprises an internal support cover, is installed to the filter bag the inside that pleating fabric is made removably, and is covered with the stretching, extension thing in being somebody's turn to do, and injects in the recess of each pleat hole of filter bag and tail-hood inside.

17, the filter of claim 16, this internal support cover wherein an end are triangle or ridged, with any filter bag internal structure of claim 5 to 11 and tail-hood form fit.

18, claim 16 or 17 filter, its inner cover and cover plate closing with holes, the latter then with the molded perforated plastic tail-hood of filter bag near.

19, the filter of claim 18, wherein, cover plate abuts against one side of leaving inner cover, and aims at the opening of the venturi tube nozzle cover plate of elongation.

20, the filter of claim 19, wherein, the nozzle of venturi tube places on two opposed end faces, to hold and the air of fixed pulse shot blastinog system transports pipe.

21, claim 1 to 11 and any filter of 15 to 20, wherein, the filter bag that pleating in advance fabric is made with a molded atresia plastic cement tail-hood wherein end sealing.

22, the filter of claim 1, wherein, molded plastic cement tail-hood with holes comprises the outside annulation of all tooth of synchronous belt in an inner annular thing that is with groove outward and, the latter is around inner annular thing secure fit, thereby the filter bag that pleating fabric is made is clamped in therebetween.

23, the filter of claim 22, the inner annular thing is to connect with a succession of tilting ear of maize, these ears of maize then are connected to molded plastic cement tail-hood, this tail-hood is with tooth-shape structure outward, being connected has on the annulation of tooth-shape structure in outer field, interior week, and internal layer annulation, ear of maize and tail-hood form the inner cover of filter.

24, the filter of claim 23, wherein, the peripheral annular thing is separated structures or combines with many arcual components that separate, with method annulation that encloses in their tight keyeds and atresia tail-hood.

25, filter plant comprises a shell, it be divided into by Turbogrid plates between " muddiness " air and " cleaning " air between.A plurality of filters that claim 19 is mentioned are installed on the Turbogrid plates and pass grid and stretch.One impulse jet airflow cleans system is arranged, comprise that a jet-stream wind transports pipe, be connected to venturi tube each filter, internal reinforcement, elongation and chew, to consolidate the position of filter at Turbogrid plates.

26, the filter plant of claim 25, wherein, the end that every pulse jet-stream wind transports pipe is chewed with the venturi tube that bolt is gripping into elongation, and the air-flow that the other end then is inserted into impulse jet cleaning system transports the outlet pipe end of system.

27, the filter plant of claim 26, the other end of outlet are placed in the compressed air cassette for supplying, and this end is closed by a solenoid electric valve under normal conditions.Energising regularly in order to Open valve, is permitted one air-flow and is transported to jet-stream wind and transports pipe, and then enter filter.

28, any filter plant of claim 25 to 27, wherein, Turbogrid plates are vertically put, the filter bag extending transversely that makes pleating fabric make.

29, the filter plant of claim 28, wherein, a plurality of pleating filter bags are arranged on a vertical plane.

30, make the equipment of the filter bag that pleating fabric makes with the method for claim 12, comprise a filter bag opening of being made by pleating fabric model that surround, the pleating shape of decision, one side is round model and as the wall that limits the tail-hood periphery, and handle flow plastics inject room between model and the wall wall, to form and the device of the tail-hood of the filter bag combination that pleating fabric is made.