阅读说明：本技术 一种新型立式叶滤机过滤装置 (Novel vertical leaf filter filters device ) 是由 高敏 梁丽 姚志伟 李萌 于 2021-09-24 设计创作，主要内容包括：本发明涉及一种新型立式叶滤机过滤装置,包括驱动组件与位于立式叶滤机的机筒内部的预过滤组件,预过滤组件主要由粗液进料管、预过滤网罩与搅拌轴构成,预过滤网罩主要由多个沿竖直方向排列的球状网罩与连接于球状网罩之间的管状网罩构成,搅拌轴竖直设置在预过滤网罩内,预过滤网罩顶部开设有供搅拌轴伸出的穿孔,底部开设有供滤渣排出的排渣口；搅拌轴上设有螺旋搅拌结构,搅拌轴的上端伸出预过滤网罩外部,受驱动组件作用转动。本发明可以对粗液进行预过滤,减小滤布符合,延长滤布使用时间,解决现有技术中因更换频繁更换滤布导致的生产成本高、整体生产效率低的问题。(The invention relates to a novel vertical leaf filter filtering device, which comprises a driving assembly and a pre-filtering assembly positioned inside a machine barrel of a vertical leaf filter, wherein the pre-filtering assembly mainly comprises a crude liquid feeding pipe, a pre-filtering net cover and a stirring shaft; the stirring shaft is provided with a spiral stirring structure, and the upper end of the stirring shaft extends out of the pre-filtering net cover and is rotated under the action of the driving assembly. The invention can pre-filter crude liquid, reduce filter cloth coincidence, prolong the service time of the filter cloth and solve the problems of high production cost and low overall production efficiency caused by frequent replacement of the filter cloth in the prior art.)

1. A novel vertical leaf filter filtering device is characterized by comprising a driving assembly and a pre-filtering assembly positioned in a machine barrel of a vertical leaf filter, wherein the pre-filtering assembly mainly comprises a crude liquid feeding pipe, a pre-filtering mesh enclosure and a stirring shaft; the pre-filtering net cover is fixed inside the machine barrel and mainly comprises a plurality of spherical net covers arranged along the vertical direction and tubular net covers connected among the spherical net covers, the spherical net covers are communicated through the tubular net covers, the stirring shaft is vertically arranged in the pre-filtering net cover, the top of the pre-filtering net cover is provided with a through hole for the stirring shaft to extend out, and the bottom of the pre-filtering net cover is provided with a slag discharge hole for discharging filter slag;

the stirring shaft is provided with a spiral stirring structure, the driving assembly comprises a driving motor positioned outside the machine barrel, and a bevel gear pair and a horizontal transmission shaft which are positioned inside the machine barrel, one end of the horizontal transmission shaft extends out of the machine barrel and is in rotation stopping connection with the output end of the driving motor, and the other end of the horizontal transmission shaft is in transmission connection with the upper end of the stirring shaft through the bevel gear pair.

2. The novel vertical leaf filter filtering device according to claim 1, wherein the spiral stirring structure comprises a spiral strip spirally arranged around the stirring shaft and a support rod supported and connected between the spiral strip and the stirring shaft, and a filter residue brush strip for cleaning filter residues on the pre-filtering screen cover is arranged on the outer side of the spiral strip.

3. The novel vertical leaf filter filtering device according to claim 1 or 2, further comprising a protective box fixed inside the machine barrel, wherein the bevel gear pair is located inside the protective box, and two extending holes for the stirring shaft and the horizontal transmission shaft to pass through are formed in the wall of the protective box.

Technical Field

The invention relates to the technical field of solid-liquid separation equipment, in particular to a novel filtering device of a vertical leaf filter.

Background

The vertical leaf filter is generally applied to fine filtration of solution, has high equipment efficiency, is widely applied to chemical industries such as steel slag vanadium extraction, sugar production, alumina and the like, mainly comprises a vertical cylinder and filter leaves, the filter leaves are arranged inside the vertical cylinder, the filter leaves comprise a filter plate, a liquid collecting pipe and filter cloth positioned on the surface of the filter plate, when in use, crude liquid is pumped into the cylinder, is filtered by the filter cloth, and refined liquid enters the inside of the filter plate and is collected by the liquid collecting pipe, and filter residues are adhered to the outside of the filter cloth to form a filter cake. In the actual use process, the service life of the filter cloth is limited, the filter cloth is difficult to clean after being blocked and scabbed, the filter cloth needs to be shut down and replaced at intervals, the maintenance cost is high, and the overall production efficiency is low.

Disclosure of Invention

The invention aims to provide a novel filtering device of a vertical leaf filter, which can solve the problems of high production cost and low overall production efficiency caused by frequent replacement of filter cloth in the prior art.

The invention provides the following technical scheme: a novel vertical leaf filter filtering device comprises a driving assembly and a pre-filtering assembly positioned inside a machine barrel of a vertical leaf filter, wherein the pre-filtering assembly mainly comprises a crude liquid feeding pipe, a pre-filtering mesh enclosure and a stirring shaft, one end of the crude liquid feeding pipe extends out of the machine barrel, and the other end of the crude liquid feeding pipe is connected with the upper end of the pre-filtering mesh enclosure and is used for supplying crude liquid to the pre-filtering mesh enclosure; the pre-filtering net cover is fixed inside the machine barrel and mainly comprises a plurality of spherical net covers arranged along the vertical direction and tubular net covers connected among the spherical net covers, the spherical net covers are communicated through the tubular net covers, the stirring shaft is vertically arranged in the pre-filtering net cover, the top of the pre-filtering net cover is provided with a through hole for the stirring shaft to extend out, and the bottom of the pre-filtering net cover is provided with a slag discharge hole for discharging filter slag;

the stirring shaft is provided with a spiral stirring structure, the driving assembly comprises a driving motor positioned outside the machine barrel, and a bevel gear pair and a horizontal transmission shaft which are positioned inside the machine barrel, one end of the horizontal transmission shaft extends out of the machine barrel and is in rotation stopping connection with the output end of the driving motor, and the other end of the horizontal transmission shaft is in transmission connection with the upper end of the stirring shaft through the bevel gear pair.

Has the advantages that: the invention provides a novel vertical leaf filter filtering device which is provided with a pre-filtering assembly for primarily filtering crude liquid, wherein the crude liquid enters the interior of a pre-filtering mesh enclosure from a crude liquid feeding pipe when the novel vertical leaf filter filtering device is used, the filtered liquid can rapidly pass through the pre-filtering mesh enclosure, and then fine filtering is carried out through filter leaves; filter residues are left in the pre-filtering mesh enclosure and are discharged through a slag discharge port at the lower end; due to the unique shape structure of the pre-filtering mesh enclosure and the arrangement of the stirring shaft, the contact area between the pre-filtering mesh enclosure and the crude liquid is increased as much as possible on the basis that the pre-filtering mesh enclosure does not occupy too large space in the machine barrel, and the flow direction of the crude liquid is changed to be fully contacted with the pre-filtering mesh enclosure by matching with the stirring effect of the stirring shaft, so that the crude liquid is fully pre-filtered; through the pretreatment of the pre-filtering component, the burden of the filter cloth can be reduced when the filtered liquid is subjected to filter leaf fine filtration, so that the service life of the filter cloth is prolonged, the replacement frequency of the filter cloth is reduced, the production efficiency is improved, and the production and maintenance cost is reduced.

Further, spiral stirring structure includes that the spiral is around the spiral strip that the (mixing) shaft set up and the bracing piece of support connection between spiral strip and (mixing) shaft, the outside of spiral strip is equipped with the filter residue brush strip that is used for clearing up filter residue on the pre-filter screen cover.

Has the advantages that: spiral stirring structure adopts above-mentioned hollow design, and spiral stirring structure can not influence the filter residue and discharge downwards when having clean filter residue, stirring thick liquid function, and novel in design is ingenious, clears up the screen panel of filtering in advance automatically when the (mixing) shaft rotates, does not worry that screen panel mesh blocks up in advance, sparingly maintains required manpower and materials.

Furthermore, novel vertical leaf filter equipment is still including being fixed in the inside protection box of barrel, bevel gear pair is located inside the protection box, offers on the protection box wall to supply (mixing) shaft and horizontal drive axle to pass two respectively and stretch out the hole.

Has the advantages that: the protective box is arranged to protect the bevel gear pair, so that the bevel gear surface is prevented from being corroded and affecting the rotation of the stirring shaft.

Drawings

FIG. 1 is a schematic structural diagram of an application state of a filtering device of a novel leaf filter 1 according to the invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

reference numerals: 1-machine barrel; 2-filtering leaves; 3, filtering by using a filter screen; 4-stirring shaft; 5-crude liquid feeding pipe; 6-a spiral stirring structure; 7-driving a motor; 8-a horizontal transmission shaft; 9-a protective box; 10-a slag discharge port; 11-a sludge discharge port; 12-helical strips; 13-a support bar; and 14-brushing filter residues.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

The specific embodiment 1 of the novel vertical leaf filter filtering device of the invention:

as shown in figure 1, the invention comprises a driving assembly and a pre-filtering assembly arranged inside a machine barrel 1 of a vertical leaf filter, wherein filter leaves 2 with filter cloth arranged on the surface are arranged inside the machine barrel 1, and a sludge discharge port 11 for discharging filter residues is arranged at the bottom of the machine barrel 1.

The prefiltering assembly mainly comprises a prefiltering mesh enclosure 3, a crude liquid feeding pipe 5 and a stirring shaft 4 positioned in the prefiltering mesh enclosure, wherein the prefiltering mesh enclosure 3 is fixed inside the machine barrel 1, as shown in fig. 1, the prefiltering mesh enclosure 3 comprises a plurality of spherical mesh enclosures arranged in the vertical direction and tubular mesh enclosures connected between the spherical mesh enclosures, the whole body is in a shape of a sugarcoated haws, and the spherical mesh enclosures are communicated with one another through the tubular mesh enclosures. The central position of the top of the pre-filtering mesh enclosure 3 is provided with a through hole for the stirring shaft 4 to extend out, the bottom of the pre-filtering mesh enclosure 3 is provided with a slag discharge port 10 for discharging filter slag, the upper end of the pre-filtering mesh enclosure 3 is provided with a feed inlet in the radial outer side of the through hole, the lower end of the coarse material feed pipe 5 extends out of the machine barrel 1, and the upper end of the coarse material feed pipe is communicated with the feed inlet on the pre-filtering mesh enclosure 3 and is used for feeding coarse liquid into the pre-filtering mesh enclosure.

The stirring shaft 4 is vertically arranged and coaxially located inside the pre-filtering mesh enclosure 3, and a spiral stirring structure 6 is fixed on the outer side of the stirring shaft, as shown in fig. 2, the spiral stirring structure 6 comprises a spiral strip 12 spirally arranged around the stirring shaft 4, a plurality of support rods 13 connected with and supporting the spiral strip, and a filter residue brush strip 14 fixed on the spiral strip 12, wherein the outer diameter of the spiral strip 13 is adjusted along with the change of the inner diameter of the pre-filtering mesh enclosure, and the filter residue brush strip 14 is used for brushing off filter residues attached to the pre-filtering mesh enclosure when the stirring shaft 4 rotates. The driving assembly is used for driving the stirring shaft 4 to rotate and comprises a horizontal transmission shaft 8 positioned inside the machine barrel 1, a bevel gear pair and a driving motor 7 positioned outside the machine barrel 2. An installation rack (not shown in the figure) fixed on the ground is arranged outside the machine barrel 2, the driving motor 7 is installed and fixed on the installation rack, one end of the horizontal transmission shaft 8 penetrates out of the rack and is in rotation-stopping connection with the output end of the driving motor 7, the other end of the horizontal transmission shaft is in transmission connection with the upper end of the stirring shaft 4 through a bevel gear pair, and the horizontal transmission shaft 8 is in sealing fit with the machine barrel body in order to ensure that the internal pressure of the vertical leaf filter is not leaked. Under the action of the driving component, the stirring shaft 4 can be driven to drive the spiral stirring structure 6 to rotate.

In order to prevent the bevel gear pair from being corroded and rusted by liquid in the using process, a protective box 9 is arranged on the outer side of the bevel gear pair, the protective box 9 is fixedly arranged in the machine barrel, and two extending holes are formed in the protective box 9 and respectively used for allowing a horizontal transmission shaft 8 and a stirring shaft 9 to pass through.

When the novel vertical leaf filter filtering device is used, crude liquid enters the interior of the pre-filtering mesh enclosure 3 through the crude liquid feeding pipe, due to the unique shape of the pre-filtering mesh enclosure 3 and the stirring effect of the spiral stirring structure, the crude liquid is fully contacted with the pre-filtering mesh enclosure 3 in the flowing process, the crude liquid subjected to pre-filtering flows out of the pre-filtering mesh enclosure 3 to be subjected to fine filtering of filter leaves, and filter residues are left in the interior of the pre-filtering mesh enclosure 3 and are discharged through the residue discharge port 10. In the prefiltering process, the crude liquid is limited by the shape of the prefiltering mesh enclosure and is stirred to change the flow direction, and the crude liquid is in enough contact with the prefiltering mesh enclosure to be fully prefiltered, and the prefiltering mesh enclosure does not occupy too large volume in the machine barrel. Spiral stirring structural design is ingenious, can play the stirring effect, and its hollow structure can not influence the filter residue and move down, and filter residue brush strip 14 on spiral strip 12 can clear up the filter residue on the prefiltration screen panel, prevents that the filter residue from gluing on the prefiltration screen panel and influencing the filtration. In conclusion, the coarse liquid pre-filtering device can pre-filter the coarse liquid at the beginning of entering the machine barrel, reduce the load of the filter cloth and prolong the service life of the filter cloth, thereby reducing the maintenance cost and improving the production efficiency.

The specific embodiment 2 of the novel vertical leaf filter filtering device of the invention is as follows:

different from the embodiment 1, the spiral stirring structure is a common spiral conveying blade, and the outer diameter of the spiral conveying blade is smaller than the minimum inner diameter of the pre-filtering net cover.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.