CN2312749Y

CN2312749Y - Twice-filtering double-layer curved sieve

Info

Publication number: CN2312749Y
Application number: CN 97226923
Authority: CN
Inventors: 吴鹏华
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-08
Filing date: 1997-09-08
Publication date: 1999-04-07
Anticipated expiration: 2007-09-08

Abstract

The utility model relates to a twice-filtering double-layer curved sieve, which is a device used for simultaneously making the coarse filtration and the fine filtration on the cane juice (mixed juice) in the cane sugar refinery. The utility model is characterized in that the rear upper part of an upper layer curved screen mesh is provided with a lower layer curved screen mesh; the altitude directions of the upper layer screen mesh and the lower layer screen mesh are mutually overlapped, therefore, the major filtering area can be obtained; more than two flow deflectors are arranged between the upper screen mesh and the lower screen mesh, which causes the lower layer curved screen mesh to obtain the cane juice filtered by the upper layer curved screen mesh on time, and is favorable to raising the filtering efficiency of the lower layer curved screen mesh. Thus, the twice-filtering double-layer curved sieve has better double filtration performance.

Description

The double-deck bent sieve of twice filtration

The utility model relates to the sugar industry syrup and produces or purify used filter plant, particularly a kind of double-deck bent sieve that is applicable to twice filtration.

CN2182177Y discloses a kind of Curved screen, on this technical spirit be with the song of prior art cane sugar factory sieve up and down two be formed by stacking, sugarcane juice enters the littler song sieve of next stage mesh and carries out the filtration second time after the bent sieve of upper level filters, because the restriction of stack back whole height, total height as the selected Curved screen of this technology is 2.8m, and existing general bent sieve has reached 2.4m highly, therefore, this technology must shorten the arc length of the bent screen cloth face of two-stage up and down inevitably, reduced filter area, very easily produced sugarcane juice and filter incomplete phenomenon; On the other hand, this technical pattern shows to have the sugarcane juice after the bent sieve of upper level filters of higher potential energy originally, must all compile its back, bottom and flow into next progressive juice case, carry out the second time with lower flow velocity again and filter, therefore influence the filter effect of the bent sieve of next stage.

The purpose of the utility model provides the double-deck bent sieve of a kind of twice novel filtration, the two aspect deficiencies that exist in the above-mentioned technology have been overcome effectively, its shape, structure or its have more filter areas in conjunction with having proposed a cover, and filter effect is better and be suitable for practical technical scheme.

The concrete structure that can realize the utility model above-mentioned purpose is: by a kind of existing bent screen device that advances the juice mouth, advances the juice case, overflow weir, bent screen cloth, juice opening and casing are formed, the bent screen cloth of lower floor is set in the back lower place of its bent screen cloth, overlapping by screen cloth up and down in short transverse, off line highest point is higher than the online lowest part greater than 50mm, and off line highest point is lower than the online highest point greater than 50mm; Online is provided with the rectangle mesh of 1～1.5mm width, off line rectangle mesh or the square mesh that is provided with 0.3～0.6mm width; And last off line between the segmentation setting be no less than two deflectors, the highest end of deflector is near the online back side, the lower other end is near off line, and apart has living space with off line, fixedly connected with last sieve nest two sides in the two ends of deflector; The form of deflector is flat board that tilts or the flap that tilts; The sieve nest of bent sieve is made up of last sieve nest and following sieve nest, last sieve nest and advance the juice mouth, advance combinations such as juice case, overflow weir, online and deflector, and combinations such as following sieve nest and baffle plate, off line and juice opening are combined into one with removable form between the sieve nest up and down.

Accompanying drawing 1 is a concrete organigram of the present utility model.

Accompanying drawing 2 is a kind of flap schematic diagram of deflector in the concrete structure of the present utility model.

Accompanying drawing 3 is the structural representation of the another kind of flap of deflector.

Among the figure: 1, advance the juice mouth; 2, advance the juice case; 3, overflow weir; 4, online highest point; 5, baffle plate; 6, online; 7, off line highest point; 8, off line; 9, deflector; 10, go up sieve nest; 11, online lowest part; 12, sugarcane bits outlet, 13, following sieve nest; 14, off line lowest part; 15, sugarcane bits outlet; 16, juice opening; 17, swash plate; 18, weir plate.

Below in conjunction with drawings and Examples in detail the utility model is described in detail:

Filtering double-layer curved sieve for twice comprises into juice mouth (1), advances juice case (2), overflow weir (3), gear Plate (5), online (6), off line (8), deflector (9), upper sieve nest (10), lower sieve nest (13) and The main members such as juice opening (16). Be used for the online (6) of filtering for the first time and be used for filtering for the second time Off line (8) are two rectangle concave arc curved surface screen clothes, and online (6) is next under the overflow weir (3), and is off line (8) be arranged at the back lower place of online (6), online (6) overlaps each other in short transverse with off line (8), namely Off line highest point (7) is higher than online lowest part (11), exceeds size H₁Greater than 50mm, H₁Value is bigger, Upper off line the more overlapping, then song sieve total height and width one regularly up and down net can obtain more mistake Filtering surface is long-pending. But H₁Increase should make off line highest point (7) be lower than the online highest point (4), be lower than value H₂Work energetically 50mm, if off line highest point (7) excessively approaches even the highest point (4) that equals to surf the Net, then close The off line compass screen surface of off line highest point will seldom maybe can not obtain the sugarcane juice behind the net filtration, thereby lose Meaning. In addition, off line lowest part (14) should be lower than online lowest part (11), in order to make the online bottom Sugarcane juice after the filtration can enter off line carrying out and filter the second time; Be right after above the off line highest point (7) and establish Baffle plate (5) is arranged, blocking the sugarcane juice after filter on online top, and make it enter smoothly the upper of off line (8) Section's wire side carries out the second time and filters. In order to realize the thickness double-filtration, online (6) is provided with 1～1.5mm The rectangle mesh of width, off line (8) are provided with rectangle mesh or the square mesh of 0.3～0.6mm width.

For the sugarcane juice after making off line (8) in time to obtain online 6 filtrations, and make full use of the potential energy of this sugarcane juice, the utility model is provided with the deflector (9) that quantity is no less than two between online (6) and off line (8), its position with respect to last off line can disposed at equal distance, also can be according to actual needs disposed at equal distance not, the highest end of deflector (9) is near the back of online (6), to accept the sugarcane juice behind the net filtration, the lower other end is near off line (8), but with off line space apart, so that sugarcane juice and bagasse that above compass screen surface is glided can pass through this space smoothly; Fixedly connected with last sieve nest (10) two sides in the two ends of deflector.The form of deflector (9) can be flat board (accompanying drawing 1) that tilts or the flap (accompanying drawing 2) that tilts, for ease of processing, the flap that tilts can be formed (accompanying drawing 3) by swash plate (17) and weir plate (18), the advantage of the deflector of accompanying

drawing

2 and 3 two kinds of forms of accompanying drawing is that the sugarcane juice after online (6) is filtered can import earlier in the groove of flap, and overflow to wire side down carries out filtration second time equably again.In order to help processing and to install, the sieve nest of the double-deck bent sieve of twice filtration is except that all-in-one-piece, can also be divided into sieve nest (10) and following sieve nest (13) two parts, last sieve nest (10) has two sides and advances juice mouth (1), advances juice case (2), overflow weir (3), online (6) and deflector combinations such as (9), following sieve nest (13) has back, bottom surface and two sides, with baffle plate (5), off line (8), and juice opening (16) combination of etc.ing, up and down between the sieve nest with removable form composition one.

Embodiment: the sugarcane juice (mixed juice) that contains more sugarcane bits that is obtained by squeezing back is after advancing juice mouth (1) and entering into juice case (2), carry out first time filtration through overflow weir (3) overflow to the wire side of online (6), the sugarcane bits of particle diameter greater than 1～1.5mm are separated with juice, sugarcane juice after the filtration carries out the filtration second time through the wire side that deflector (9) enters off line (8), again the sugarcane bits of particle diameter greater than 0.3～0.6mm are separated with juice, sugarcane juice after twice filtration is collected to down sieve nest (13) bottom and is discharged by juice opening (16), and the sugarcane of separating on wire side is up and down considered each free sugarcane bits outlet (12) to be worth doing, (15) skid off compass screen surface.

In sum, because these well-designed design features of the utility model compared with prior art, have following outstanding advantages:

1, in identical song sieve overall height, can make online and the longer curved surface of lower network arrangements, Thereby obtain more filter area.

2, be designed with several deflectors upper between off line, can make net filtration in the off line timely acquisition After the sugarcane juice with high flow velocities, be conducive to improve off line filter efficiency.

3, bent sieve sieve nest can be made two parts up and down, is combined into one with removable form, helps making and installing.Also be convenient to utilize original bent sieve to transform.

Claims

1, the double-deck bent sieve of a kind of twice filtration, by advance juice mouth (1), advance juice case (2), overflow weir (3), online (6), juice opening (16) and sieve nest form, it is characterized in that: the back lower place in online (6) is provided with off line (8), and the segmentation setting is no less than two deflectors (9) between online (6) and off line (8).

2, the double-deck bent sieve of twice filtration according to claim 1, it is characterized in that: online (6) is overlapping in short transverse with off line (8), and off line highest point (7) is higher than online lowest part (11), exceeds size H ₁Greater than 50mm, and off line highest point (7) be lower than the online highest point (4), be lower than size H ₂Greater than 50mm.

3, the double-deck bent sieve of twice filtration according to claim 1 and 2, it is characterized in that: the highest end of deflector (9) is near online (6) back side, the lower other end is near off line (8), and apart have living space with off line (8), fixedly connected with last sieve nest (10) two sides in the two ends of deflector (9).

4, the double-deck song sieve of twice filtration according to claim 1 and 2 is characterized in that: deflector (9) is the flap of the dull and stereotyped or inclination of inclination.

5, the double-deck song sieve of twice filtration according to claim 3 is characterized in that: deflector (9) is the flap of the dull and stereotyped or inclination of inclination.

6, the double-deck bent sieve of twice filtration according to claim 4, it is characterized in that: deflector (9) is made up of swash plate (17) and weir plate (18).

7, the double-deck bent sieve of twice filtration according to claim 5, it is characterized in that: deflector (9) is made up of swash plate (17) and weir plate (18).

8, the double-deck bent sieve of twice filtration according to claim 1 and 2, it is characterized in that: the sieve nest of bent sieve is made up of last sieve nest (10) and following sieve nest (13), last sieve nest (10) with advance juice mouth (1), advance juice case (2), overflow weir (3), online (6), and deflector (9) combination, following sieve nest (13) and baffle plate (5), off line (8) and juice opening (16) combination are formed one with removable form between the sieve nest up and down.

9, the double-deck bent sieve of twice filtration according to claim 1 and 2, it is characterized in that: online (6) is provided with the rectangle mesh of 1～1.5mm width, and off line (8) are provided with the rectangle mesh or the square mesh of 0.3～0.6mm width.