CN217188246U - Residue discharging device of PM membrane filtering equipment - Google Patents

Abstract

The utility model relates to sulfuric acid production filtering equipment, in particular to a slag discharging device of PM membrane filtering equipment; the method comprises the following steps: the device comprises PM membrane filtering equipment, wherein the PM filtering equipment is connected with a feeding pipeline, a discharging pipeline, a backflush overflow pipeline and a slag discharge pipeline; arrange sediment pipeline below and set up the row's sediment bucket that has sealed lid, it is equipped with the overflow hole to arrange sediment bucket upper portion still be equipped with the evacuation hole on arranging the sediment bucket, connect the decompression pipe on the evacuation hole, the decompression pipe height is higher than row sediment bucket height. The utility model has the advantages that: liquid flows back to the raw material tank through a return pipe arranged on the residue discharge barrel, and then continuously enters a feeding pipeline on the PM membrane filtering equipment, so that the liquid in the residue is recycled; through the decompression pipe that sets up on arranging the sediment bucket, avoided arranging sediment bucket pressurized and fragile, also avoided liquid excessive, improve the device security performance.

Description

PM membrane filtration equipment's row's sediment device

Technical Field

The utility model relates to a sulphuric acid production filtration equipment, concretely relates to sediment device is arranged to PM membrane filtration equipment.

Background

At present, in the production process of sulfuric acid, the prepared sulfuric acid is conveyed to an acid storage tank through a pipeline, and if the product contains impurities, sulfate and the like, the sulfuric acid is not whitened and clarified enough, and belongs to unqualified products in production; to solve this technical problem, the common practice in production is two kinds: 1. when the unqualified product is processed at the bottom price, the production benefit of enterprises is not facilitated; 2. filtering with a filter to remove impurities, sulfate, etc. in the sulfuric acid to obtain qualified product.

Patent application No.: 202010315025.6, discloses a hyperfine concentrated sulfuric acid filtering device and a filtering method, the device is provided with a first pipeline for sulfuric acid to flow in, a second pipeline for overflowing concentrated sulfuric acid to be discharged after backflushing, a third pipeline for discharging filtered concentrated sulfuric acid and a fourth pipeline for discharging filter residue, and a PM membrane is arranged in the device; when the sulfuric acid flows into the device from the feeding pipeline, impurities contained in the sulfuric acid are filtered through the PM membrane, the filtered sulfuric acid is discharged to the storage tank from the third pipeline, and filter residues after filtering are discharged from the fourth pipeline.

The technical problems that arise from this are: the filter residue contains both solid and liquid, and directly enters the slag discharge barrel when being discharged; because the certain distance is reserved between the slag discharging barrel and the filtering equipment, the filter residue discharged by the filtering equipment has certain pressure intensity in the slag discharging process, so that certain impact is brought to the slag discharging barrel in the slag discharging process, the damage of the slag discharging barrel or the overflow and liquid leakage are easily caused, and certain danger is brought to operators.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a sediment device is arranged to PM membrane filtration equipment.

The technical scheme of the utility model is that: a slag discharging device of PM membrane filtering equipment comprises the PM membrane filtering equipment, wherein a feeding pipeline, a discharging pipeline, a backflushing overflow pipeline and a slag discharging pipeline are connected to the PM membrane filtering equipment; the method specifically comprises the following steps: arrange sediment pipeline below and set up the row's sediment bucket that has sealed lid, it is equipped with the overflow hole to arrange sediment bucket upper portion still be equipped with the evacuation hole on arranging the sediment bucket, connect the decompression pipe on the evacuation hole, the decompression pipe height is higher than row sediment bucket height.

Furthermore, a return pipe is connected to the overflow hole, one end of the return pipe is connected with the slag discharging barrel, and the other end of the return pipe is connected with the raw material tank.

Further, the decompression pipe sets up along vertical direction, the evacuation hole is connected to decompression pipe one end, the decompression pipe other end is the intercommunication atmosphere, decompression union coupling atmosphere one end is equipped with the structure of downwarping, when filtration equipment to when arranging the sediment bucket and arrange the sediment, can in time discharge with arranging the interior gas of sediment bucket.

Further, a visual cup is arranged at the position, close to the slag discharging barrel, of the slag discharging pipeline, and discharged filter residue can be monitored in time through the visual cup.

Further, still be equipped with in the sediment bucket and carry the sediment device, carry the sediment device and arrange for dismantling between the sediment bucket and be connected, carry sediment device bottom and place in arranging sediment barrel head portion, carry the sediment device top and set up on the upper portion of arranging sediment bucket inner wall.

Furthermore, the shape of the bottom surface of the slag extracting device is matched with that of the bottom of the slag discharging barrel, a plurality of connecting rods are arranged along the outer side of the bottom surface of the slag extracting device, one end of each connecting rod is connected with the bottom surface of the slag extracting device, and the other end of each connecting rod is hung on an annular structure arranged on the inner wall of the slag discharging barrel.

The beneficial effects of the utility model are that: sulphuric acid filters the back through the PM membrane, discharges the filter residue to arranging the sediment bucket through arranging the sediment pipeline, has about 0.5 Mpa's pressure because of the action of gravity from arranging the slag notch exhaust filter residue, and the filter residue is gushed into and is arranged in the sediment bucket, and liquid in the filter residue collects the back and gets into the raw materials groove through establishing overflow hole and the back flow backward flow on arranging the sediment bucket, can continue to enter into the charge-in pipeline on the PM membrane filtration equipment after can depositing through the raw materials groove, realizes the liquid in the filter residue and recycles, reduction in production cost.

The slag discharging barrel is also provided with a vent hole and a pressure reducing pipe, and the height of the pressure reducing pipe is far higher than that of the slag discharging barrel; when filter residues with certain pressure flow into the residue discharge barrel, the pressure in the residue discharge barrel is increased, and the gas in the residue discharge barrel can be discharged out immediately through the pressure reduction pipe connected to the emptying hole, so that the phenomenon that the residue discharge barrel is seriously pressed and easily damaged due to the pressure action is avoided, and the liquid overflow condition caused by the pressure action is also avoided; the end of the pressure reducing pipe connected to the atmosphere has a structure bent downward for preventing the particles in the air from depositing and clogging the pressure pipe.

The slag extraction device is arranged in the slag extraction barrel, after the filter residue is precipitated in the slag extraction barrel, the solid filter residue begins to deposit to finally form a filter cake or a filter block, the filter cake or the filter block after deposition can be quickly taken out through the slag extraction device, and the slag extraction barrel is convenient to clean.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a slag extractor in an embodiment of the present invention;

in the figure:

1. feed pipe 2, discharge pipe 3, overflow pipe behind recoil

4. Slag discharge pipeline 5, slag discharge barrel 6 and return pipe

7. Decompression pipe 8, visual cup 9 and slag lifting basket

Detailed Description

The slag discharging device of the PM membrane filtering equipment comprises the PM membrane filtering equipment, wherein a feeding pipeline 1, a discharging pipeline 2, a backflushing overflow pipeline 3 and a slag discharging pipeline 4 are arranged on the PM membrane filtering equipment; a cylindrical slag discharging barrel 5 with a sealing cover is arranged on the slag discharging pipeline 4, a visual cup 8 is arranged on the slag discharging pipeline 4 near the slag discharging barrel 5, an overflow hole is arranged at the upper part of the outer wall of the slag discharging barrel 5, a return pipe 6 is connected to the overflow hole, one end of the return pipe 6 is connected with the slag discharging barrel 5, and the other end is connected with a sulfuric acid tank to be filtered; an emptying hole is formed in the position, close to the slag discharging barrel 5, of the return pipe 6, the emptying hole is connected with a pressure reducing pipe 7, one end of the pressure reducing pipe 7 is connected with the slag discharging barrel 5 through the return pipe 6, the other end of the pressure reducing pipe is connected with the atmosphere, the pressure reducing pipe 7 is arranged in the vertical direction and exceeds 3-5 meters of the slag discharging barrel 5 in height, and an arc shape which is bent downwards is arranged at one end of the pressure reducing pipe 7, which is connected with the atmosphere.

Still be equipped with in arranging sediment bucket 5 and carry sediment basket 9, carry the sediment basket 9 bottom surface and for circular and arrange the shape of sediment bucket 5 bottom and agree with, the circular outside in carry sediment basket 9 bottom surface is fixed with four connecting rods, and carry sediment basket 9 is connected to connecting rod one end, and the other end hangs on the cyclic annular structure that is equipped with on arranging sediment bucket 5 inner wall.

Example 1:

after the PM membrane filtration equipment filters sulfuric acid, filter residues are discharged through a residue discharge pipeline 4, the length of the residue discharge pipeline 4 is about 4 meters, liquid and solid in the filter residues have pressure of about 0.5Mpa due to the action of gravity, the filter residues flow into a residue discharge barrel 5, the condition of the filter residues can be observed through a sight cup 8, the filter residues extrude the liquid in the residue discharge barrel 5, and the liquid level exceeding the height of an overflow hole can flow back through a return pipe 6 to enter a sulfuric acid tank to be filtered to prepare for re-filtration; the pressure in the slag discharging barrel 5 is released to the atmosphere through a decompression pipe 7; solid filter residues in the residue discharge barrel 5 are precipitated to form a filter cake, a sealing cover of the residue discharge barrel 5 is periodically opened, and the filter cake is taken out by pulling the residue lifting basket 9, so that the residue discharge barrel 5 is cleaned.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although an embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention. The equivalent changes and improvements made according to the application scope of the present invention should be still included in the patent coverage of the present invention.

Claims (6)

1. A deslagging device of PM membrane filtering equipment comprises the PM membrane filtering equipment, wherein a feeding pipeline, a discharging pipeline, a backflush overflow pipeline and a deslagging pipeline are connected to the PM membrane filtering equipment; the method is characterized in that: arrange sediment pipeline below and set up the row's sediment bucket that has sealed lid, it is equipped with the overflow hole to arrange sediment bucket upper portion still be equipped with the evacuation hole on arranging the sediment bucket, connect the decompression pipe on the evacuation hole, the decompression pipe height is higher than row sediment bucket height.

2. The slag discharge device of a PM membrane filtration apparatus according to claim 1, characterized in that: the overflow hole is connected with a return pipe, one end of the return pipe is connected with the slag discharging barrel, and the other end of the return pipe is connected with the raw material tank.

3. The slag discharge device of a PM membrane filtration apparatus according to claim 1, characterized in that: the utility model discloses a pressure reducing pipe, including decompression pipe, pressure reducing pipe, the setting of vertical direction is followed to the decompression pipe, the evacuation hole is connected to decompression pipe one end, the decompression pipe other end is the intercommunication atmosphere, decompression union coupling atmosphere one end is equipped with downwarping structure.

4. The slag discharge device of a PM membrane filtration apparatus according to claim 1, characterized in that: the slag discharging pipeline is close to the slag discharging barrel, a visual cup is arranged at the position, where the slag discharging barrel is close to, of the slag discharging pipeline, and discharged filter residue conditions can be monitored in time through the visual cup.

5. The slag discharge device of a PM membrane filtration apparatus according to claim 1, characterized in that: the slag discharging barrel is internally provided with a slag lifting device, the slag lifting device is detachably connected with the slag discharging barrel, the bottom of the slag lifting device is placed at the bottom of the slag discharging barrel, and the top of the slag lifting device is arranged at the upper part of the inner wall of the slag discharging barrel.

6. The slag discharge device of a PM membrane filtration apparatus according to claim 5, characterized in that: the shape of the bottom surface of the slag lifting device is matched with that of the bottom of the slag discharging barrel, a plurality of connecting rods are arranged along the outer side of the bottom surface of the slag lifting device, one end of each connecting rod is connected with the bottom surface of the slag lifting device, and the other end of each connecting rod is hung on an annular structure arranged on the inner wall of the slag discharging barrel.

Images