CN102462988A - Pressure filtering dehydration device - Google Patents
Pressure filtering dehydration device Download PDFInfo
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- CN102462988A CN102462988A CN2011103280284A CN201110328028A CN102462988A CN 102462988 A CN102462988 A CN 102462988A CN 2011103280284 A CN2011103280284 A CN 2011103280284A CN 201110328028 A CN201110328028 A CN 201110328028A CN 102462988 A CN102462988 A CN 102462988A
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- filter plate
- filter
- barrier film
- filtrating
- heavy section
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Abstract
A pressure filtering dehydration device (1) comprises filtering plates (30) and separation films (20). The filtering plates are used for clamping filtering cloth (7) to form a filtering chamber and extrduing an extruded object supplied to the filtering chamber. The separation films are provided with a thick wall portion (22) and a thin wall portion (21) in an integral manner. The thick wall portion (22) is used for frame filtering. When pressurizing fluid is supplied between the thin wall portion (21) and one filtering plate (30), the thin wall portion (21) expands. One surface (22a) connected by the thick wall portion (22) and one of the filtering plate (30) is provided with a sealing surface for sealing the pressurizing fluid. The filtering cloth (7) is clamped between the other surface (22b) of the thick wall portion (22) and the other filtering plate (30). The other surface (22b) of the thick wall portion (22) is provided with a discharge groove (22e) as a filtering liquid discharge portion for discharging filtering liquid. According to the invention, the number of parts to form the filtering chamber is reduced and the extruding processing can be properly and effectively carried out.
Description
Technical field
The present invention relates to a kind of have to filter cloth carry out clamping and form the filter chamber, filter plate that the extruded object thing that is supplied in said filter chamber is pushed and the pressure filtration dewater unit of barrier film.
Background technology
In the past; Separate in Treatment of Sludge operation or the manufacturing processes such as carbon goods and titanium article of filtrating and filter cake various fields such as necessary solid-liquid separation process in that the mud that water treatment plant and sewage treatment plant produced is dewatered, working pressure filtering means dehydration device is to carry out Separation of Solid and Liquid.
The pressure filtration dewater unit constitutes: filter cloth is configured to be forced into along under the state of the mutual butt of orientation at a plurality of filter plates that will arrange along prescribed direction; A pair of filter cloth is clamped between the adjacent filter plate; It is the filter chamber that the extruded object thing is supplied in the space that is surrounded by this a pair of filter cloth, and the extruded object thing is by the barrier film extruding that is configured in the filter chamber.
Shown in Figure 11 (a) and (b); Patent documentation 1 discloses a kind of pressure filtration dewater unit; Its filter chamber is formed by filter plate 71, barrier film 72 and filter frame 74 that barrier film 72 is fixed on the filter plate 71; By a pair of filter cloth adjacent filter chamber being carried out crimping, is the filter chamber thereby form the space surrounded by filter cloth, barrier film 72 is expanded and the extruded object thing that is supplied in this filter chamber is pushed.
Its thickness direction is formed with extruded object thing supply hole in filter plate 71 upper edges, and is provided with connector portions 76, and the extruded object thing branch that this connector portions 76 will offer extruded object thing supply hole is supplied in the filter chamber.The filtered fluid that is supplied in the extruded object thing generation of filter chamber by branch flows out from the filtrating drain tank 73 that is formed at filter frame 74, through the intercommunicating pore 78 that is formed at filter plate 71, connects the filtrate drain drilling 77 that forms to the thickness direction along filter plate 71 and discharges.
In addition; Patent documentation 2 discloses a kind of like this pressure filtration dewater unit: shown in figure 12; Between a plurality of filter plates 80, dispose a pair of filter cloth 81 (81a, 81b) respectively; And to connect the space surrounded by a pair of filter cloth 81 be filter chamber 82, on a side's who forms each filter chamber 82 filter plate 80, is provided with to utilize filter frame 84 and be fixed on the barrier film 83 on the filter plate 80, utilizes from the pressure (hydraulic) water supply port 85 that is formed at filter plate 80 to be supplied in the pressure (hydraulic) water between barrier film 83 and the filter plate 80 and to make barrier film 83 expansions; Thus, the extruded object thing in the filter chamber 82 is pushed.
On filter plate 80, be provided with the confession mud mouth 86 and filtrating outlet 87 of the extruded object thing that each filter chamber 82 is communicated with other filter chamber 82.The filtrating of oozing out from a side filter cloth 81a is discharged to filtrating outlet 87 through the filtrating drain passageway 88 that is formed at filter plate 80, and the filtrating of oozing out from the opposing party's filter cloth 81b is discharged to filtrating outlet 87 through the filtrating discharge portion 89 that is formed at filter frame 84.
Patent documentation 1: real the opening of Japan put down the 5-60506 communique
Patent documentation 2: japanese kokai publication hei 5-155112 communique
Invent problem to be solved
But; The pressure filtration dewater unit that patent documentation 1 is put down in writing; The barrier film 72 of its formation filter chamber and filter frame 74 split each other constitute; For filter frame 74 contact-making surface with a pair of filter plate 71, need be used to avoid containment member that filtrating that the filter chamber generates or the pressure (hydraulic) water that makes barrier film 72 expansion usefulness leak etc., just the problem that causes the cost rising because of the increase of the increase of part number and assembly process is arranged.
In addition, about filter plate 71 and filter frame 74, the intercommunicating pore 78 of filter plate 71 and the filtrating drain tank 73 of filter frame 74 need carry out cut, and the problem that manufacturing process increases, processing charges improve is also arranged.
The pressure filtration dewater unit that patent documentation 2 is put down in writing also needs filter frame 84 and containment member, therefore, same problem is arranged also, that is: the constituent part number increases, and in order on filter frame 84, to form filtrating discharge portion 87 production process increase, processing charges is improved.
In addition; The pressure filtration dewater unit that patent documentation 1 is put down in writing; Have to filtrate drain tank 73, intercommunicating pore 78 is formed at restricted zone; Said filtrating drain tank 73, intercommunicating pore 78 are used for the filtrating guiding is discharged to along the thickness direction of filter plate 71 and connect the filtrate drain drilling 77 that forms; Equally, the pressure filtration dewater unit that patent documentation 2 is put down in writing also has such problem: have to filtrating drain passageway 88, filtrating discharge portion 89 are formed at restricted zone; Said filtrating drain passageway 88, filtrating discharge portion 89 are used for the filtrating guiding is discharged to along the thickness direction of filter plate 80 and connect the filtrating outlet 87 that forms, and are difficult to guarantee that enough displacement will be will push the filtrating discharge that is generated efficiently.
In addition, because that the filtrating of filtrating drain tank 73, intercommunicating pore 78 and filtrating discharge portion 89 is discharged the absolute magnitude of ability is not enough, therefore, also exist filtrating drain tank 73, intercommunicating pore 78 and filtrating discharge portion 89 to stop up and problem that drainability is descended.
Summary of the invention
The objective of the invention is to, a kind of pressure filtration dewater unit is provided, can reduce the part number of the member that constitutes filter chamber, can also be suitably and carry out extrusion process effectively.
Be used to solve the means of problem
For realizing above-mentioned purpose, of technical scheme 1, the design feature of pressure filtration dewater unit of the present invention is; Have filter plate and barrier film that filter cloth is carried out clamping and forms the filter chamber, the extruded object thing that is supplied in said filter chamber is pushed; Said barrier film is one-body molded to have heavy section and thinner wall section, and this heavy section plays the filter frame effect, when pressure fluid supplies between this thinner wall section and a side's the filter plate; This thinner wall section produces and expands; On a face of the said heavy section that the filter plate with a said side joins, be formed with sealing surface, clamping filter cloth between another face of said heavy section and the opposing party's filter plate with the sealing of said pressure fluid; The position except said sealing surface on this another face or in said heavy section, being formed with can be with the filtrating discharge portion of filtrating discharge.
Adopt said structure; Because the integrally formed heavy section that plays the effect of filter frame on the thinner wall section of the effect of playing barrier film; Therefore do not need as the filter frame of part in addition, guarantee enough sealing properties, when extruding, also utilize of the filtrating discharge of filtrating discharge portion simultaneously appropriate amount for pressure fluid by the face that the filter plate with a side of heavy section joins; This filtrating discharge portion is formed on another face of heavy section or the position except sealing surface in the heavy section; Therefore between said another face and the opposing party's filter plate, filter cloth is carried out clamping, can reduce the part number of the member that constitutes filter chamber, can also be suitably and carry out extrusion process effectively.
For example, shown in Figure 10 (a) and (b), form filter chamber, in said filter chamber, form the filter chamber that surrounds by a pair of filter cloth 98 by the thinner wall section 92 and the heavy section 93 of filter plate 90, barrier film 91.On filter plate 90, be formed with filtrating discharge portion 94, on heavy section 93, be formed with filtrating discharge portion 95, filtrating discharge portion 95 is communicated with filtrating discharge portion 94 through the access 96 that is formed at filter plate 90.
Between thinner wall section 92 and filter plate 90, supply with pressure (hydraulic) water from the pressure (hydraulic) water supply port that is formed at filter plate 90, utilize pressure (hydraulic) water that thinner wall section is expanded, thus the extruded object thing in the said filter chamber is pushed.The filtrating of discharging from said filter chamber is collected in through filtrating discharge portion 94,95, access 96 along the thickness direction of each filter plate 90 and connects the outage 97 that forms and discharge to the outside.
Therefore effect owing to played the sealing surface 99 that the pressure (hydraulic) water that is supplied between thinner wall section 92 and the filter plate 90 is sealed by the face that is held of the heavy section 93 of a pair of filter plate 90 clampings, need not have other containment member, can reduce the part number.
In addition; If the heavy section with the effect of playing above-mentioned filter frame constitutes barrier film with the thinner wall section of shrinking that expands, then can adopt the synthetic resin filling is made in the jet forming method of mould, so also can be integrally formed filtrating discharge portion; This point is compared with the situation that filtrating discharge portion is carried out cut in the past; Manufacturing process reduces, and also can cut down the material of waste, can reduce manufacturing cost.
Of technical scheme 2, second design feature is, except the first above-mentioned design feature, said filtrating discharge portion is that many dispersions are formed on the drain tank on another face of said heavy section.
If make said structure, when utilizing the synthetic resin material to carry out ejection formation when the thinner wall section of integrally formed barrier film and heavy section, even thinner wall section, heavy section and filtrating discharge portion are complicated shapes, also as long as a just moulding easily of mould of making.Especially, filtrating discharge portion connects heavy section and the structure that forms, but constitutes the drain tank that is formed at another face of heavy section, thereby can make the designs simplification of barrier film, can reduce manufacturing cost.
The mobile variation that contained solid content is blocked in the drain tank, filtrates even filtrate, because said drain tank is formed at the surface of heavy section, therefore cleaning easily.
And; Because drain tank disperses to be formed at another face of heavy section; Therefore; Can guarantee enough filtrating discharge rates and the sealing property for the sealing surface of pressure fluid that is formed at a said face is descended, can be evenly and promptly from the extruded object thing, discharge filtrating, can shorten dewatering time.That is, can improve the strainability of pressure filtration dewater unit.
Of technical scheme 3; The 3rd design feature is; Except the first or second above-mentioned design feature, arbitrary side in a said side's filter plate and said the opposing party's filter plate or both sides are formed with when the rising portions that this filter plate is made both sides' filter plate butt when closed, and said heavy section forms than the thick given size of this rising portions; Under the state of this rising portions butt, said heavy section is compressed with authorized pressure.
Adopt said structure; Because heavy section forms than the thick given size of rising portions; The difference of the thickness of heavy section and the thickness of rising portions is the decrement of barrier film, can the pressure of the heavy section crimping that makes barrier film be maintained in authorized pressure, so can make the sealing effectiveness of sealing surface stable.
Of technical scheme 4; The 4th design feature is; Except above-mentioned first in the 3rd arbitrary design feature,, be formed with the filtrating that collection discharges from said filtrating discharge portion and make its liquid collecting portion along the circulation of filter plate surface in the part that is the said heavy section outside when this filter plate is closed.
Adopt said structure, collect by the liquid collecting portion of the part that is formed at the heavy section outside from the filtrating that filtrating discharge portion discharges.Because liquid collecting portion is formed at the outside of heavy section, therefore, can guarantee enough big sectional area, can make filtrating successfully circulate along the filter plate surface and discharge.
Of technical scheme 5; The 5th design feature is; The said liquid collecting portion that on a said side's filter plate, is formed with the recess that said barrier film is installed and is positioned at this recess outside; The outside in said liquid collecting portion is formed with said rising portions, is collected in the bearing surface sealing of the filtrating of said liquid collecting portion by said rising portions.
Adopt said structure because the filtrating of being collected by liquid collecting portion is by the bearing surface sealing of rising portions, therefore, filtrating not can from rising portions to the external leaks of filter plate, disperse, can be with keeping clean around the pressure filtration dewater unit.
Of technical scheme 6, the 6th design feature is, except the 4th or the 5th above-mentioned design feature, on each filter plate, is formed with the outage that connects along thickness direction, and said liquid collecting portion is communicated with said outage.
Adopt said structure,, therefore, compare from the situation that the filter plate perimembranous flows out, can discharge opeing be simplified the structure with filtrating owing to concentrate discharge from be communicated with the outage that forms with liquid collecting portion by the filtrating of liquid collecting portion collection.
Of technical scheme 7, the 7th design feature is, except the above-mentioned the 4th in the 6th arbitrary design feature, said filter cloth is with posture configuration up and down, and the left and right end portions of said filter cloth is configured to be positioned at said liquid collecting portion place.
If the structure of adjacent filter plate clamping filter cloth, then under the crimped status of each filter plate, filter cloth is by the filter plate clamping, and stronger pressure acts on filter cloth, and this thing happens repeatedly, and filter cloth just might be damaged.
Adopt said structure, be configured to be positioned at liquid collecting portion place with the left and right end portions of the filter cloth of posture configuration up and down, filter cloth can be by the filter plate clamping.Filter cloth is only by the heavy section and the filter plate clamping of barrier film, so can reduce damaged possibility.
Of technical scheme 8; The 8th design feature is; In the 7th, arbitrary design feature, constitute a filter element by a filter plate and a barrier film except above-mentioned first, a plurality of filter elements are configured to side by side and can between crimped status and released state, move; The filter plate of a filter element is a said side's a filter plate, and the filter plate of the filter element adjacent with the barrier film of this filter element is said the opposing party's a filter plate.
Adopt said structure; Owing to constitute a filter element by a filter plate and a barrier film; A plurality of filter elements are configured to side by side and can between crimped status and released state, move; With the filter plate of a filter element filter plate as a said side, will be with the barrier film of this filter element the filter plate of adjacent filter element as said the opposing party's filter plate, therefore; Come the clamping filter cloth and form filter chamber by a barrier film that filter element had and the filter plate that filter element had adjacent, can constitute the pressure filtration dewater unit with simple structure with said filter element.
The effect of invention
The present invention is adopted in as above explanation, can provide a kind of part number that can cut down the member that constitutes filter chamber, can also be suitably and carry out the pressure filtration dewater unit of extrusion process effectively.
Description of drawings
Fig. 1 is the sketch map of pressure filtration dewater unit of the present invention.
Fig. 2 is the key diagram of the crimped status of a plurality of filter elements of expression.
Fig. 3 is the key diagram of the released state of a plurality of filter elements of expression.
Fig. 4 is the key diagram of filter plate, barrier film and filter cloth.
Fig. 5 (a) is the front view of filter element, (b) is the schematic sectional view of explanation rising portions, (c) is the schematic sectional view of the rising portions of another example of explanation, (d) is the schematic sectional view of the rising portions of another example of explanation.
Fig. 6 is the key diagram of barrier film, (a) is front view, (b) is rearview, (c) be in the front view along the end view drawing of A-A line, (d) be B portion details drawing in the front view, (e) be along the end view drawing of C-C line in the B portion details drawing.
Fig. 7 is the key diagram of filter plate, (a) is front view, (b) is rearview.
Fig. 8 is the key diagram of the barrier film of another example, (a) is front view, (b) is rearview, (c) be in the front view along the end view drawing of D-D line, (d) be E portion details drawing in the front view, (e) be along the end view drawing of F-F line in the E portion details drawing.
Fig. 9 (a) is the schematic sectional view of the filter element of another example of explanation, (b) is the schematic sectional view of the filter element of another example of explanation, (c) is the schematic sectional view of the filter element of another example of explanation.
Figure 10 is the key diagram of the pressure filtration dewater unit relevant with the present invention, (a) is the key diagram of filter element, (b) is the key diagram of the crimped status of a plurality of filter elements of expression.
Figure 11 is the key diagram of pressure filtration dewater unit in the past, (a) is the key diagram of filter element, (b) is the key diagram of major part.
Figure 12 is the key diagram of pressure filtration dewater unit in the past.
Symbol description
1: the pressure filtration dewater unit
2: front baffle
3: afterframe
4: body side frame
4a: sliding part
5: driving and reversing mechanism
5a: bar
5b: pushing member
5c: hydraulic cylinder
7: filter cloth
6: driven roller
8: wiper mechanism
9: strainer
10: supporting device
10a: upper roll
10b: lower rollers
10c: deflector roll
11: combine pin
12: connector
13: screw
14: joint
15: extruded object thing supply port
16: the filtrating outlet
17: the swing correction mechanism
20: barrier film
21: thinner wall section
22: heavy section
22a: face
22b: face
22c: opening
22d: recess
22e: drain tank
30: filter plate
31: recess
32: through hole
33: the pressure (hydraulic) water stream
34: the pressure (hydraulic) water supply hole
35: liquid collecting portion
35a: bottom
36: rising portions
37: outage
38: rhone
39: connectivity slot
40: liner
41: recess
42: liner
The specific embodiment
Below, an example of pressure filtration dewater unit of the present invention is described.
As shown in Figure 1, pressure filtration dewater unit 1 has: front baffle 2, afterframe 3 and be erected at front baffle 2 and afterframe 3 between pair of side frames 4.
A plurality of filter plates 30 are bearing on the pair of side frames 4 slidably, and the driving and reversing mechanism 5 that each filter plate 30 is set at front baffle 2 drives between crimped status shown in Figure 2 and released state shown in Figure 3.
The top of former frame frame 2 disposes the driven roller 6 that the filter cloth 7 of annular is seen off, disposes the wiper mechanism 8 that filter cloth 7 is cleaned on the top of afterframe 3.
The filter cloth of being seen off by driven roller 67 is configured to: after being adjusted to regulation tension force by the strainer that is arranged at front baffle 2 equally 9, utilize to be arranged at the supporting device 10 of each filter plate 30 about to set up into filtering surface relative, seeing importing wiper mechanism 8 in back from each filter plate 30 off.
About each filter plate 30, be equipped with up and down a pair of combination pin 11, the combination pin 11 of adjacent a pair of filter plate 30 is through combining to be connected to each other with the slotted hole that is formed at as the connector 12 of linkage.And among Fig. 1, the filter plate 30 of left end is connected with afterframe 3, and the filter plate 30 of right-hand member is connected with driving and reversing mechanism 5.
Driving and reversing mechanism 5 is made up of the hydraulic cylinder 5c that bar 5a top has pushing member 5b.When utilizing hydraulic cylinder 5c to make bar 5a do to advance action; Each filter plate 30 translates into the crimped status that is pushed to afterframe 3 by pushing member 5b; When making bar 5a make backward movement; Each filter plate 30 moves to front baffle 2, translates into the released state apart from separation with the slotted hole defined that is formed at connector 12.
Under the crimped status of pressure filtration dewater unit 1 after driving and reversing mechanism 5 is done to advance action, carry out the filling of extruded object thing in the filling treatment of each filter chamber and the extrusion process that the extruded object thing after the filling is pushed.
And; After extrusion process, done at driving and reversing mechanism 5 under the released state of backward movement, carry out and utilize driven roller 6 that the walking of filter cloth 7 walking predetermined distances is handled; So that the dewatered cake after each filter chamber is extruded breaks away from from filter cloth 7; Then, driving and reversing mechanism 5 is done to advance action, repeats same processing.In addition, driven roller 6 drives through reducing gear and with drive motor and is connected, and driving mechanism is made up of driven roller 6, reducing gear and drive motor.
The filter cloth of seeing off from filter plate 30 7 is erected on the driven roller 6 via swing correction mechanism 17 after the wiper mechanism that is possessed by afterframe 38 cleans.
The swing correction mechanism 17 that is possessed between wiper mechanism 8 and the driven roller 6 is mechanisms that the width walking position to filter cloth 7 limits, and is arranged on the scaffold 18 that is installed in front baffle 2 tops.
Strainer 9 is given filter cloth 7 with the tension force of regulation.The tension force of so-called regulation, but be meant the tension force that utilizes filter cloth 7 to make filter cloth 7 stabilized walkings with the friction of driven roller 6, preferably under the released state of each filter plate 30, the filter cloth 7 of 30 of each filter plates do not produce crooked suitable tension force.
Like Fig. 4, shown in Figure 5, in the present embodiment, on each filter plate 30, be fixed with barrier film 20 at the recess 31 that is formed at a face along orientation.Fixing means can adopt the suitable known method that uses screw 13 grades.Barrier film 20 has and expands the thinner wall section 21 shrink freely and be integrally formed in the heavy section that plays the filter frame effect 22 around the thinner wall section 21, forms filter chamber by the space that the back side separated of barrier film 20 and the filter plate 30 adjacent with this barrier film 20.
Supporting device 10 has upper roll 10a and lower rollers 10b, and upper roll 10a and lower rollers 10b are bearing on the carriage that is fixed in each filter plate 30, utilizes two roller 10a, 10b that filter cloth 7 is hung between the adjacent filter plate 30 along the vertical direction.
Near upper roll 10a, have deflector roll 10c, this deflector roll 10c is not directed to filter cloth 7 under filter plate 30 released states and contacts with barrier film 20 with filter plate 30.
When each filter plate 30 utilized driving and reversing mechanism 5 and translates into crimped status, the space that in filter chamber, is separated by filter cloth 7 became the filter chamber.
Be formed with through hole 32 at each its thickness direction of filter plate 30 upper edges, be provided with joint 14 30 of each filter plates, and constitute, the through hole 32 of each filter plate 30 is communicated with through joint 14 under crimped status.And under crimped status, the extruded object thing supply port 15 that the extruded object thing is possessed from afterframe 3 supplies to this through hole 32, and the extruded object thing is filled in each filter chamber by the branch branch road that is formed at joint 14.
Below each filter plate 30, has pressure (hydraulic) water stream 33, the pressure (hydraulic) water that its supply is used to make the barrier film 20 that is installed on filter plate 30 to expand to the filter chamber side.
The pressure (hydraulic) water of supplying with from pressure (hydraulic) water stream 33 is discharged to filter plate 30 from the pressure (hydraulic) water supply hole 34 of the recess 31 that is formed at filter plate 30 and is installed between the thinner wall section 21 of barrier film 20 of filter plate 30.
Utilize pressure (hydraulic) water feed mechanism (not shown) will supply to pressure (hydraulic) water stream 33, expand to filter chamber's side through the thinner wall section 21 that makes barrier film 20, thereby the extruded object thing that supplies to the filter chamber is extruded as the pressure (hydraulic) water of pressure fluid.In addition, pressure fluid is not limited to pressure (hydraulic) water, also forced air.
That is to say that constitute a filter element by a filter plate 30 and a barrier film 20 with pressure (hydraulic) water stream 33, adding a pair of filter cloth 7 on this basis just becomes filter mechanism.Constitute pressing mechanism by said filter element and said pressure (hydraulic) water feed mechanism, this pressing mechanism pushes the extruded object thing that is supplied in the space that formed filtering surface is relative between each filter plate 30 under the crimped status.
A plurality of filter element alignment arrangements become can between crimped status and released state, move, and the filter plate of a filter element is a said side's a filter plate, and the filter plate of the filter element adjacent with the barrier film of a said filter element is said the opposing party's a filter plate.
Shown in Fig. 6 (a)～(e), barrier film 20 has and expands the thinner wall section 21 shrink freely and be integrally formed in the heavy section that plays the filter frame effect 22 around the thin-walled 21.Thus, the filter frame that is used for constituting filter chamber needn't be used, therefore the part number can be reduced.
A face 22a of the heavy section 22 of the barrier film 20 that joins with filter plate 20 plays the effect of the sealing surface that the pressure (hydraulic) water of supplying with from pressure (hydraulic) water stream 33 is sealed.
Be formed with the opening 22c that inserts logical screw 13 usefulness at the Si Jiaochu of heavy section 22, screw 13 is fixed on barrier film 20 on the recess 31 of filter plate 30.
On another face 22b of heavy section 22, disperse to be formed with many from the filter chamber through filter cloth 7 the filtrate drain tank 22e of discharge portion of the conduct of discharge that will filtrate.
For example, as long as the cross sectional shape of drain tank 22e forms U font, V font and rectangle etc., also can make the spacing between the adjacent drain tank 22e inequality.The width of drain tank 22e, the degree of depth, bar number and shape can consider that smooth discharge of filtrating and the size of filtrating contained solid content etc. carry out optimal setting.
That is to say; Because filtrating discharge portion is by disperseing many drain tank 22e that are formed at heavy section 22 another face 22b to constitute; Therefore can filtrating be dispersed among each drain tank 22e, the contained solid content of filtrating is difficult for being blocked in each drain tank, can successfully filtrating be discharged.Contained solid content accumulates among the drain tank 22e even filtrate, the mobile variation of filtrating or result in blockage, because drain tank 22e is formed on the face 22b of heavy section 22, therefore cleaning also is easy.
In addition; Can increase the whole net sectional area of drain tank 22e and the sealing property for the sealing surface of pressure fluid that is formed at a face 22a is descended; Can guarantee the discharge rate of filtrating fully, can filtrating evenly promptly be discharged from the extruded object thing, can shorten dewatering time.That is, can improve the strainability of pressure filtration dewater unit.
The face 22a that a face 21a of thinner wall section 21 forms with heavy section 22 is positioned on same.Make like this, can guarantee bigger filter chamber space, be positioned on same but need not the face 22a of the face 21a of thinner wall section 21 and heavy section 22 be made.Another face 21b through making thinner wall section 21 and another face 22b of heavy section 22 form and are positioned on same; When the extruded object thing is pushed; Face 21b with regard to thinner wall section 21 capable of using desires to turn back to the elastic force that is positioned at same position with face 22b, therefore can improve extrusion performance.In the central authorities of another face 21b of thinner wall section 21, the logical liquid bath 21c of the filtrating when being formed with by 7 pairs of extruded object things extruding of filter cloth.
Owing to barrier film 20, play the heavy section 22 of filter frame effect with adjacent filter plate 30 crimping and produce to expand shrink one-body moldedly with the thinner wall section 21 that the extruded object thing is pushed, therefore preferably constitute by the material that has suitable hardness and pliability concurrently.
For example, make the heavy section 22 of barrier film 20 one-body molded through the such synthetic resin material of thermoplasticity synthetic rubber being carried out ejection formation with thinner wall section 21.
In the present embodiment; Form a plurality of recess 22d through positive and negative and make heavy section 22 losss of weight at heavy section 22; Reduce each thickness poor of heavy section 22, thereby the contraction deviation when making the cooling of ejection formation reduces, but heavy section 22 also can form the solid construction of no recess 22d.
In addition,, the synthetic resin material obtaining under the situation of barrier film 20, even the logical liquid bath 21c of thinner wall section 21, heavy section 22 and filtrating discharge portion are complicated shapes, also as long as make a just moulding easily of mould through being carried out ejection formation.Especially, through making the structure that is formed at heavy section 22 another face 22b, can eliminate the groove (Japanese: ア Application ダ one カ Star ト), therefore can make simplifying the structure of mould, reduce manufacturing cost of mould as the drain tank 22e of filtrating discharge portion.
Shown in Fig. 7 (a), be formed with the recess 31 of installation barrier film 20 at a face of filter plate 30.Recess 31 forms to such an extent that be a bit larger tham the outside dimension of barrier film 20, and the heavy section 22 of the barrier film of installing with toilet 20 can be expanded to width by 30 crimping of adjacent filter plate.
In addition, filter plate 30 can produce lightweight and chemical resistance as the synthetic resin characteristic if make through the for example such synthetic resin material of polypropylene is carried out extrusion modling, can obtain to meet the filter plate with sufficient intensity of service condition.
In the side, the left and right sides of filter plate 30, have and be used for putting the pair of sliders 4a on pair of side frames 4.
As stated; Below filter plate 30; Has the pressure (hydraulic) water stream 33 of supplying with pressure (hydraulic) water; Pressure (hydraulic) water is used to make the barrier film 20 on the recess 31 that is installed in filter plate 30 to expand to the filter chamber side, and the pressure (hydraulic) water of supplying with from pressure (hydraulic) water stream 33 is discharged between filter plate 30 and the barrier film 20 from the pressure (hydraulic) water supply hole 34 of the recess 31 that is formed at filter plate 30.
The outside about recess 31 is formed with the filtrating that collection discharges from the drain tank 22e of barrier film 20 and makes its liquid collecting portion 35 along the surface circulation of filter plate 30, is formed with the rising portions 36 with adjacent filter plate 30 butts in the outside of liquid collecting portion 35.In addition, liquid collecting portion 35 also can be formed on the barrier film 20.
The bottom 35a of liquid collecting portion 35 forms than liquid collecting portion's 35 low one-levels, and the side of 35a is formed with the outage 37 that connects along filter plate 30 thickness directions in the bottom, and liquid collecting portion 35 is communicated with by bottom 35a with outage 37.The filtrating of being collected by liquid collecting portion 35 is discharged to the outside of pressure filtration dewater unit 1 through filtrating outlet 16 that afterframe 2 possessed from outage 37.
Shown in Fig. 5 (a), the left and right end portions of filter cloth 7 is configured to be positioned at liquid collecting portion 35 places, and filter cloth 7 is by the heavy section 22 and filter plate 30 crimping of barrier film 20.
If filter cloth is clamped in the structure between adjacent filter plate, then under the crimped status of each filter plate, stronger pressure acts on filter cloth, under this state, if barrier film is movable filter cloth is stretched, and then filter cloth might be damaged.As make above-mentioned structure, and then being configured to be positioned at liquid collecting portion 35 places with the left and right end portions of the filter cloth 7 of posture configuration up and down, filter cloth 7 can not clamped by the rising portions 36 of filter plate 30.Owing to be crimped on barrier film 20 and the filter plate 30 with the little authorized pressure of crimping pressure, therefore can reduce damaged possibility than the rising portions 36 of adjacent filter plate 30.
Rising portions 36 forms than the heavy section 22 thin given sizes of barrier film 20, for example thin 1～10mm, preferably thin 2～5mm.That is to say that because heavy section 22 forms than rising portions 36 thick given sizes, therefore, under the state of rising portions 36 and adjacent filter plate 30 butts, the thickness that heavy section 22 is compressed two filter clothes 7 with authorized pressure adds the distance of given size.
Liquid collecting portion 35 forms than rising portions 36 thin given sizes, for example thin 1～20mm, preferably thin 3～10mm.Under the state of each filter plate 30 crimping, under the state of rising portions 36 and adjacent filter plate 30 butts, form the filtrating discharge portion of given size.At this moment, the filtrating of being collected by liquid collecting portion 35 is sealed by the bearing surface of rising portions 36, therefore can be from the side leakage of filter plate 30.
Be not limited to structure such shown in Fig. 5 (b); That is: the back side of the face that barrier film 20b is installed of rising portions 36a and adjacent filter plate 30b that is formed at the face that barrier film 20a is installed of filter plate 30 connects, the heavy section 22 compressed structures of barrier film 20a; Also can make shown in Fig. 5 (c) such structure, that is: the face of the installation barrier film 20a of filter plate 30a connect with the rising portions 36b at the back side of the face that barrier film 20b is installed that is formed at adjacent filter plate 30b, the heavy section 22 compressed structures of barrier film 20a; Perhaps make shown in Fig. 5 (d) such structure, that is: the rising portions 36b at rising portions 36a and the back side of the face that barrier film 20b is installed that is formed at adjacent filter plate 30b that is formed at the face that barrier film 20a is installed of filter plate 30a connects, the heavy section 22 compressed structures of barrier film 20a.In addition, Fig. 5 (b) is to the symbol 7 expression filter clothes of Fig. 5 (d), and symbol 35 is represented liquid collecting portions.
Promptly; As long as arbitrary side or both sides in a said side's filter plate and said the opposing party's filter plate; Be formed with the rising portions that the filter plate that when this filter plate is closed, makes both sides connects; Said heavy section forms than the thick given size of this rising portions, and said heavy section is compressed with authorized pressure and gets final product under the state of this rising portions butt.
Thus; Because heavy section forms than the thick given size of rising portions; The thickness of heavy section and the decrement that is become barrier film by the filter chamber difference at interval of rising portions restriction can be maintained in authorized pressure with the pressure of the heavy section crimping that makes barrier film, therefore; Can make the sealing effectiveness of sealing surface stable, can obtain to avoid causing the effect of damaged possibility because of the excessive fastening pressure of heavy section.
The size that is applied to the pushing force on each filter plate 30 by pushing cylinder 5c is so long as can 30 crimping become degree that the extruded object thing in the filter chamber can not leak from filter chamber just enough with filter plate with the heavy section 22 of barrier film 20; Even but the pushing force that exceeds this size is applied on each filter plate 30; Because rising portions 36 is with adjacent filter plate 30 butts and support said pushing force; Therefore; Can not apply the pushing force more than the authorized pressure, be out of shape or damaged possibility owing to too fastening so can prevent heavy section 22 to the heavy section 22 of barrier film 20.
Shown in Fig. 7 (b), another face of filter plate 30 and adjacent barrier film 20 form filter chamber, are formed with many side by side at this face and are used to make filtrate flow rhone 38 downwards, and the lower end of each rhone 38 is communicated with through the connectivity slot 39 that along continuous straight runs forms.
As long as the cross sectional shape of rhone 38 forms U font, V font and rectangle etc., also can make the spacing between the adjacent rhone 38 inequality.The width of rhone 38, the degree of depth, bar number and shape can consider that smooth discharge of filtrating and the size of filtrating contained solid content etc. carry out optimal setting.
When with filter plate 30 crimping, the right ends portion of connectivity slot 39 is communicated with the bottom 35a of the liquid collecting portion 35 of adjacent filter plate 30.Surrounded by liner 40 around the bottom 35a of liquid collecting portion 35 and the rhone 38, filtrating just can not leaked from the bottom of filter plate 30.
Above about filter plate 30, be formed with the recess 41 that to accommodate joint 14 under the crimped status at each filter plate.In recess 41, has under the state in joint 14 is housed in recess 41 liner 42 that the gap with joint 14 and recess 41 seals.
Joint 14 has supply port and from the branch branch road of said supply port orthogonal branches; Said supply port is communicated with the through hole 32 that forms to the thickness direction perforation of filter plate 30 from recess 41 bottom surfaces, and the extruded object thing of supplying with from through hole 32 supplies to the filter chamber from said supply port through said minute branch road.
Joint 14 is installed on the connector 12, and under the released state of each filter plate 30, separates with each filter plate 30 respectively.In addition, joint is not limited to said structure, can use known joint.
According to above structure, because heavy section and thinner wall section is integrated, this thinner wall section generation expansion when pressure fluid supplies between this thinner wall section and a side's the filter plate; Heavy section plays the effect of filter frame; Therefore, needn't use the filter frame that is used for constituting filter chamber, under the state of said heavy section by a pair of filter plate crimping; Owing on the filter plate with a side of said heavy section joins a face, be formed with the sealing surface that said pressure fluid is sealed; Therefore do not need containment member, can reduce the part number, said heavy section by another face of the opposing party's filter plate crimping or in said heavy section the position except said sealing surface; Being formed with can be with the filtrating discharge portion of filtrating discharge; Therefore, the sealing surface of said pressure fluid and the distance between the said filtrating discharge portion be can fully guarantee, a kind of possibility that can avoid said pressure fluid to leak, can guarantee the to filtrate pressure filtration dewater unit of discharge rate again realized from filtrating discharge portion.
Below, another example of pressure filtration dewater unit of the present invention is described.
In above-mentioned example, explained on heavy section 22 to form the structure of drain tank 22e, but the shape of drain tank 22e is not limited to above-mentioned structure, also the drain tank 22e of the waveform of that kind as Fig. 8 (a) to (e) shown in as filtrating discharge portion.As long as form the discharge rate of when by the filter plate crimping, guaranteeing to filtrate fully width and shape groove and be the suitable shapes that fully obtains the continuous seal effect on can sealing surface at pressure (hydraulic) water.In addition, corresponding for the each several part structure of the barrier film shown in Fig. 8 (a) to (e) with the each several part structure of the barrier film shown in Fig. 6 (a) to (e), just put on identical symbol, omit explanation.
In above-mentioned example, the face 22b that has explained at the heavy section 22 of barrier film 20 is formed with the structure as the drain tank 22e of filtrating discharge portion, but filtrating discharge portion also breakthrough form be formed in the tap of heavy section.The aperture of tap and quantity can obtain to stipulate that the suitable aperture and the quantity of sealing load get final product so long as under the crimped status of each filter plate 30, can discharge enough the sealing surface of filtrating and face 22a.
In above-mentioned example; The face 22a that face 21a and the heavy section 22 of thinner wall section 21 be described is formed on same and goes up or another face 21b of thinner wall section 21 and another face 22b of heavy section 2 are formed on the situation on same; But barrier film also can constitute; Its thinner wall section forms tabular, and the edge portion of thinner wall section is connected the position of leaving from the thickness direction both ends in week in the heavy section that plays the filter frame effect.
When membrane becomes expanded, when shrinking, in the edge portion of barrier film concentrated stress repeatedly.Adopt said structure; Because this edge portion is connected the position of leaving from the thickness direction both ends in week in the heavy section, therefore, can avoid producing contacting of stress concentrates said edge portion and filter plate; The damaged possibility that causes because of wearing and tearing can be reduced, the life-span of barrier film can be prolonged.
In addition; Barrier film also can constitute: the edge portion of its thinner wall section is connected thickness direction one end side of heavy section; Or be connected the position of leaving from both ends; the central portion of thinner wall section forms to the side-prominent tabular surface in thickness direction the other end of heavy section, and tabular surface is connected with the inclined plane with edge portion.
Adopt said structure, can obtain the volume of bigger filter chamber, form flat situation with thinner wall section and compare, can also under the less state of the caused bounce-back of the elastic force of thinner wall section, increase extruding force.
In addition, when the pressure (hydraulic) water that will be used for the stoste extruding is discharged, can thinner wall section be desired to return the power of the power of origin-location as the discharge pressure (hydraulic) water, discharge pressure (hydraulic) water easily.
In above-mentioned example, the structure that about the another side at recess 31 back sides of filter plate 30, has the rising portions 36 that can embed barrier film 20 has been described, but rising portions be not limited to be located at filter plate about, also can be provided in a side of structure up and down.In addition, also form rising portions, and the structure of the barrier film maintaining part that barrier film is kept be set in addition with kick, as long as rising portions can be maintained regulation stress with the compression of the heavy section of barrier film, Any shape can.In addition, under the situation of utilizing other mechanism can the heavy section of barrier film suitably be pushed, not necessarily need rising portions.
In above-mentioned example, explained to have driven roller, annular filter cloth is configured to movably structure, but the structure of filter cloth is not limited thereto.The driven roller that filter cloth is driven also can be set, but for example between each filter plate, hang the structure of establishing a pair of filter cloth.
The mechanism that filter plate 30 is moved between crimped status and released state; Be not limited to constitute by above-mentioned driving and reversing mechanism with hydraulic cylinder; Also such structure: each filter plate 30 of suspension on the chain that is equipped between the sprocket wheel that front baffle and afterframe possess; Through drive sprocket chain is moved, thereby each filter plate 30 that is suspended on this chain is moved between crimped status and released state.
In above-mentioned example, as shown in Figure 4, the situation that between the opposite face of barrier film that is installed on filter plate 30 20 and the filter plate adjacent with said filter plate 30, forms filter chamber has been described, but also following such structure.Shown in Fig. 9 (a), be different from the filter plate 30 that barrier film 20 is installed, use flat filter plate 30c in addition, between the opposite face of the single face of barrier film 20 and filter plate 30c, form filter chamber, or form filter chamber with filter frame.Also can shown in Fig. 9 (b), form filter chamber on the two sides of flat filter plate 30c respectively, or use the two sides that the filter plate 30d of barrier film 20 is installed, between each opposite face of two barrier films 20 and two tabular filter plate 30c, form filter chamber.
Any one of above-mentioned example all is an example of the present invention, and the present invention also can't help this description and limits, and self-evident, the concrete structure of each several part can be done suitably change design in the scope that can obtain action effect of the present invention.
Claims (8)
1. pressure filtration dewater unit has filter plate and barrier film that filter cloth is carried out clamping and forms the filter chamber, the extruded object thing that is supplied in said filter chamber is pushed, and this pressure filtration dewater unit is characterised in that,
Said barrier film is one-body molded to have heavy section and thinner wall section, and this heavy section plays the effect of filter frame, and when pressure fluid supplied between this thinner wall section and a side's the filter plate, this thinner wall section produced and expands,
On a face of the said heavy section that the filter plate with a said side joins, be formed with sealing surface with said pressure fluid sealing,
Clamping filter cloth between another face of said heavy section and the opposing party's filter plate, the position except said sealing surface on this another face or in said heavy section is formed with the filtrating discharge portion that can filtrating be discharged.
2. pressure filtration dewater unit as claimed in claim 1 is characterized in that, said filtrating discharge portion is that many dispersions are formed on the drain tank on another face of said heavy section.
3. pressure filtration dewater unit as claimed in claim 1 is characterized in that,
Arbitrary side in a said side's filter plate and said the opposing party's filter plate or both sides are formed with when the rising portions that this filter plate is made both sides' filter plate butt when closed,
Said heavy section forms than the thick given size of this rising portions,
Under the state of this rising portions butt, said heavy section is compressed with authorized pressure.
4. like each described pressure filtration dewater unit in the claim 1 to 3; It is characterized in that; In the part that is the said heavy section outside when this filter plate is closed, be formed with the filtrating that collection discharges from said filtrating discharge portion and make its liquid collecting portion along the circulation of filter plate surface.
5. pressure filtration dewater unit as claimed in claim 4; It is characterized in that; The said liquid collecting portion that on a said side's filter plate, is formed with the recess that said barrier film is installed and is positioned at this recess outside; The outside in said liquid collecting portion is formed with said rising portions, is collected in the bearing surface sealing of the filtrating of said liquid collecting portion by said rising portions.
6. pressure filtration dewater unit as claimed in claim 4 is characterized in that, on each filter plate, is formed with the outage that connects along thickness direction, and said liquid collecting portion is communicated with said outage.
7. pressure filtration dewater unit as claimed in claim 4 is characterized in that, said filter cloth is with up and down posture configuration, and the left and right end portions of said filter cloth is configured to be positioned at said liquid collecting portion place.
8. pressure filtration dewater unit as claimed in claim 1 is characterized in that,
Constitute a filter element by a filter plate and a barrier film, a plurality of filter elements are configured to side by side and can between crimped status and released state, move,
The filter plate of a filter element is a said side's a filter plate, and the filter plate of the filter element adjacent with the barrier film of this filter element is said the opposing party's a filter plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010248510A JP5634224B2 (en) | 2010-11-05 | 2010-11-05 | Filter press dehydrator |
| JP2010-248510 | 2010-11-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102462988A true CN102462988A (en) | 2012-05-23 |
| CN102462988B CN102462988B (en) | 2015-10-28 |
Family
ID=46067287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110328028.4A Active CN102462988B (en) | 2010-11-05 | 2011-10-25 | Pressure filtering dehydration device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5634224B2 (en) |
| CN (1) | CN102462988B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225985A (en) * | 2014-09-24 | 2014-12-24 | 广东翔俊环保设备有限公司 | High-pressure filter pressing device |
| CN114667422A (en) * | 2019-11-25 | 2022-06-24 | 株式会社不二工机 | Power element and expansion valve using the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53136684U (en) * | 1977-04-04 | 1978-10-28 | ||
| JPS58112411U (en) * | 1982-01-20 | 1983-08-01 | 日本碍子株式会社 | Filter press filter plate |
| JPS62109712U (en) * | 1985-12-28 | 1987-07-13 | ||
| CN1374879A (en) * | 1999-09-18 | 2002-10-16 | 奥托库普公司 | Filter press |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS631609U (en) * | 1986-06-19 | 1988-01-07 |
-
2010
- 2010-11-05 JP JP2010248510A patent/JP5634224B2/en active Active
-
2011
- 2011-10-25 CN CN201110328028.4A patent/CN102462988B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53136684U (en) * | 1977-04-04 | 1978-10-28 | ||
| JPS58112411U (en) * | 1982-01-20 | 1983-08-01 | 日本碍子株式会社 | Filter press filter plate |
| JPS62109712U (en) * | 1985-12-28 | 1987-07-13 | ||
| CN1374879A (en) * | 1999-09-18 | 2002-10-16 | 奥托库普公司 | Filter press |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225985A (en) * | 2014-09-24 | 2014-12-24 | 广东翔俊环保设备有限公司 | High-pressure filter pressing device |
| CN104225985B (en) * | 2014-09-24 | 2016-03-09 | 广东翔俊环保设备有限公司 | A kind of high pressure filter-pressing device |
| CN114667422A (en) * | 2019-11-25 | 2022-06-24 | 株式会社不二工机 | Power element and expansion valve using the same |
| CN114667422B (en) * | 2019-11-25 | 2024-04-12 | 株式会社不二工机 | Power element and expansion valve using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012096207A (en) | 2012-05-24 |
| JP5634224B2 (en) | 2014-12-03 |
| CN102462988B (en) | 2015-10-28 |
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