CN2060688U - Double flow type plate and frame of filter presses - Google Patents

Abstract

The utility model discloses a new-style lower double flow type plate and frame of a filter press which used on a filter press is composed of a filter frame, a wash plate and a filter plate. A feed opening is arranged on the middle position of the upper part of the filter frame; the dark current hole on the wash plate and the open current hole on the filter plate are respectively arranged on the left side of the wash plate and the right side of the filter plate and all are in the state of lower double flow type, saving an output valve on the wash plate. The feed liquid goes into the frame form the feed opening positioned on the upper part of the frame and is piled up from bottom to top in the filter frame when being filtered. Therefore, the filter frame can be filled with the filter residue, filter liquid is respectively and simultaneously discharged form the dark current hole of the wash plate and the open flow hole of the filter plate, improving the filtration efficiency. The water goes into from the dark current hole positioned on the left side of the wash plate, and a front and a back liquid filter tanks of the two faces of the wash plate are is filled with the water when the people wash, improving the washing effect. Beside, the water and the time are also saved.

Description

Double flow type plate and frame of filter presses

The utility model belongs to the equipment of chemical production equipment plate and frame filter press.

In some chemical process, usually need to use plate and frame filter press that material is filtered, and filter residue washed and dries up, use on the plate and frame filter press at present be double-current method (wash plate is to go up double fluid, filter is double-current down), (Fig. 1) be filter frame; It (Fig. 2) is the profile of (Fig. 1); (Fig. 3) be wash plate; (Fig. 4) (Fig. 5) (Fig. 6) is the profile of (Fig. 3), (Fig. 7) is filter; (Fig. 8) (Fig. 9) is the profile of (Fig. 7); (Figure 10) be the filtering technique state; (Figure 11) be the washing process state.

In use there are some shortcomings in this class sheet frame, at (Fig. 1), (Fig. 3) and (Fig. 7) in, 1 and 9 is undercurrent water inlet passing through straight holes; 8 and 12 is that straight hole is passed through in charging; 10 and 11 is washing lotion free flow holes; 6 and 7 is filtrate free flow holes; Its outer output valve 5 that is equipped with, before feed liquid is filtered, filter plate and filter frame need be separated by to arrange and see that (Figure 10) (profile after the arrangement) 13 is filter clothes wherein, on this moment filter plate and the filter frame hole be arranged as 2 → 8 → 2 → 12 and 1 → 4 → 1 → 9 periodic each since the file leader to the last person, form charging and liquid outlet channel.During filtration, the feed liquid in the admission passage through filter frame (Fig. 1) and (Fig. 7) two filtrate receiver (Fig. 5) flow out by free flow hole 7 and 6 and 11 and 12 respectively.This double-current method sheet frame, because of charging hole is arranged on the lower end, the back enters the feed liquid in the frame, and the filter residue that can be amassed in the filter frame bottom is blocked, and is difficult for entering filter frame, and quantity is filtered in influence.And filter residue is difficult for being full of filter frame.The volume of frame can not make full use of.

In order to obtain more filtrate, after filtering end, to wash filter residue in the frame and filter cloth, ginseng (Figure 11), at this moment, running water enters the undercurrent passage of forming by 1 → 4 → 1 → 9, enters the filtrate receiver of two of filter plates through the hole 3 of wash plate (Fig. 3), if at this moment output valve 5 is opened, water can flow out the effect that (promptly walking short circuit) just do not have washing through free flow hole 7 and 6 immediately.In order to have improved this situation, just must will own delivery valve 5 Close Alls on (Fig. 3), delivery valve 5 opens and closes frequent (delivery valve opens full when filtering feed liquid), the fragile quality that has influence on filtrate and washing lotion with leaking like this.

The purpose of this utility model provides a kind of novel double-current method press filtration sheet frame down, to overcome the above-mentioned shortcoming of double-current method press filtration sheet frame.This novel double-current method press filtration sheet frame down can not only keep the various performances of original double-current method press filtration sheet frame, and have the characteristics of filter efficiency height, washing and favorable drying effect, and without delivery valve, easy to operate.

The scheme of this utility model is such: from helping feed liquid is full of the requirement of frame, charging hole designs on filter plate and filter frame top, and the charging hole position is arranged on the centre position on filter plate and filter frame top, and then effect is better.Like this feed liquid and filter residue not only can depended on pressure jacking filter frame in, and the filtrate in frame all drains, the washing inlet opening was both designed below.Simultaneously be installed in top again, can wash up and down.

An embodiment below in conjunction with the description of drawings utility model: (Figure 12) be filter frame; It (Figure 13) is the profile of (Figure 12); (Figure 14) be wash plate; It (Figure 15) is the profile of (Figure 14); (Figure 18) be filtering technique free flow state; (Figure 19) be filtering technique undercurrent state; Be to wash and dry up state of the art (Figure 20); Be (Figure 21) by the technological operation position of adorning valve.

Free flow hole 24 and 25 on the filter (Figure 16) is arranged on right side, filter bottom.Undercurrent hole 19 and 20 on the wash plate (Figure 14) is arranged on the wash plate lower left side.Undercurrent fluid hole 19 on the filtration deckle board (Figure 14) all designs oval, to regulate the receipts place in the filter cloth use.The top of wash plate (Figure 14) and filter (Figure 16) is provided with four filter cloth alignment pins 18 and 22 respectively, is convenient to make the pore volume on the filter cloth easily to aim at each passage when the dress filter cloth.Before the filtration, valve-off 27,28,30, Open valve 29 and 26, after filtering beginning, feed liquid enters the passage of being made up of hole 14 → 21 → 14 → 17, and 15 enter each frame respectively through the hole, at first can all be full of inside casing, filtrate pass filter cloth converge in the filtrate receiver of filter (Figure 16) two sides free flow hole 24 and 25 and the filtrate receiver of wash plate (Figure 14) two sides in converge to filtrate and portal 20, through forming the discharge of undercurrent passage by 19 → 16 → 23 → 16.

Filter residue is stayed in the frame and is progressively piled up from bottom to top, finally can be full of in the frame, compare with double-current method press filtration sheet frame, the filter residue inlet can increase by 15%, filtration time shortens about 20%, filtered when the later stage, speed was slack-off, can close inlet valve 26 and liquid valve 29, open compressed air valve 30 and blow, force filter cloth to compress to filter residue, filter residue is pressed dry, put and press back filter cloth and filter residue to produce the space, and it is apparent in view to filtering the shortening time in later stage to continue charging.

When the washing beginning, valve-off 26, Open valve 27, water enter the undercurrent passage of being made up of hole 14 → 21 → 14 → 17, and 15 enter each frame respectively through the hole, at the filter cake layer top, because it is less that intake pressure is controlled, its objective is by the gravity of water and through filter cloth and earlier the filtrate on filter cloth skin and each filtrate receiver at first washed to the greatest extent that washing lotion is pressed bright, the undercurrent hole of original filtrate and discharged, its inflow accounts for about 20% of total amount, uses inlet opening, bottom 19 and 20 then instead.Valve-off 27 and 29, open water intaking valve 28, water enters wash plate (Figure 14) two side filtrate receivers by undercurrent hole 19 and 20, under the pressure of water, force the air in the groove in the filter cloth seam, to be drained, water level rises, all be full of filtrate receiver at last, and can vertically pass filter cake layer and in the filtrate receiver of filter plate (Figure 16) side, discharge to free flow hole 24 and 25.Water can not walked short circuit, must output valve, compare with double-current press filtration sheet frame, and improve detersive efficiency 10%.And the wash water total amount can reduce 50%, and wash time shortens 20%.

In the time of need drying up for filter residue after needn't washing and wash, can close water intaking valve 28, open compressed air valve 30, blow by top washing sequence, the vertical pressure that air produces forces filter residue in frame, compress towards another side by one, blown to the greatest extent by air in expressed water, air is not walked short circuit, and the moisture content in the filter residue not only gassing time is short, and dry up easily, the filter residue water content can reduce 20-30%.

Claims (4)

1, a kind of press filtration sheet frame of plate and frame filter press has: wash plate, transition frame and filter are formed, and its charging hole is arranged by 14,21,14,17.Arrange by 19,16,23,16 in fluid undercurrent hole.Wash plate is provided with undercurrent hole (or inlet opening) 19 and 20, and filter is provided with free flow fluid hole 24 and 25.It is characterized in that the charging hole 14 and 15 on the said filter frame is arranged on the filter frame upper middle position, the free flow fluid hole 24 and 25 on the wash plate on undercurrent fluid hole 19 and 20 filters is separately positioned on two sides about each plate bottom.

2, press filtration plate according to claim 1, frame is characterized in that: the undercurrent fluid hole (or inlet opening) 19 and 20 on the wash plate is arranged on the left side of wash plate bottom.Free flow fluid hole 24 and 25 on the filter is arranged on the right side of filter bottom.

3, press filtration sheet frame according to claim 1 is characterized in that: the undercurrent on filter frame and the filter is by hole 16 and 23, and the undercurrent fluid hole 19 on the wash plate all designs oval.

4, press filtration sheet frame according to claim 1 is characterized in that: the top of wash plate and filter is provided with four filter cloth alignment pins 18 and 22 respectively.

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