CN201271539Y

CN201271539Y - Filtering equipment for protecting acid pump

Info

Publication number: CN201271539Y
Application number: CNU2008201058029U
Authority: CN
Inventors: 梁振威; 刘树鹏; 韩继征; 费彩华; 史文
Original assignee: Tangshan Iron and Steel Co Ltd
Current assignee: Hebei Iron and Steel Co Ltd
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2009-07-15
Anticipated expiration: 2018-09-05

Abstract

Disclosed is a filtering device for protecting an acid pump, which belongs to the technical field of filtering equipment, and solves the technical problem of providing the filtering device to prevent impurities from entering the acid pump, extend the service cycle of the acid pump, and reduce unnecessary loss of parking, and the utility model adopts the technical scheme that: the filtering device comprises a box body, an upper cover, an acid inlet pipe, an acid outlet pipe, a filter screen plate and a drain valve, the filter screen plate is positioned in the box body to partition the inner space of the box body into two chambers, a plurality of filtration holes are evenly arranged on the filter screen plate, the acid inlet pipe and the acid outlet pipe are respectively positioned on the wall of the box body at both sides of the filter screen plate, the upper cover is positioned above the box body, and is in detachable and fastening connection with the box body, and the drain valve is arranged at the lower part of the box body. The filtering device is disposed on a pipeline between the acid pump and the acid tank, the acid storage tank, thereby preventing impurities from entering the acid pump, extending the service cycle of the acid pump, and reducing unnecessary loss of parking, meanwhile, the acid liquor can also be purified, blockage to acid tank nozzles can be reduced, and the acid washing quality can be improved.

Description

Be used to the filter of protecting sour pump to use

Technical field

The utility model relates to a kind of filter that metallurgical row is used to protect the acid circulating pump of pickling lines that is applied to, and belongs to the filter plant technical field.

Background technology

Pickling is an important technology in the iron and steel flat cold-rolled sheet production process, and acid cleaning process equipment comprises acid tank, acid storage tank, and the acid solution in the acid storage tank is carried to descaling bath by pipeline by sour pump, and each acid tank has pipeline to be connected with corresponding acid storage tank to return acid solution.In actual production process, the foreign matter in acid tank and the acid jar often enters sour pump, sour pump is produced stop up even infringement, causes the improper parking of acid cleaning process section, and influences product quality.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of prevention foreign matter and enters sour pump, prolongation acid pump life cycle, reduces the filter of protecting sour pump to use of being used to of unnecessary parking loss.

The technical scheme that solves the problems of the technologies described above is:

A kind of filter of protecting sour pump to use of being used to; it by casing, loam cake, acid inlet tube, go out acid tube, screen pack, drain valve and form; screen pack is positioned at casing; with the interior space segmentation of casing is two Room; be evenly equipped with a plurality of filtering holes on the screen pack, acid inlet tube and going out on the box body wall that acid tube lays respectively at the screen pack both sides, loam cake is above casing; with casing be dismountable being fastenedly connected, drain valve is in the bottom of casing.

The above-mentioned filter of protecting sour pump to use of being used to; described screen pack is two; their parallel dischargings; filtering holes diameter on every screen pack is identical; the filtering holes diameter of two screen packs has difference; greater than the diameter near the filtering holes of the screen pack that goes out acid tube, screen pack and casing are for removably connecting near the diameter of the filtering holes of the screen pack of acid inlet tube.

The above-mentioned filter of protecting sour pump to use of being used to, described acid inlet tube and go out the acid tube end adpting flange is arranged, flange is connected with the acid solution conveyance conduit.

The above-mentioned filter of protecting sour pump to use of being used to has acidproof sealing gasket between described casing and the loam cake.

This filter is installed on the pipeline between sour pump and acid tank, the acid storage tank, can avoid foreign matter to enter sour pump, prolongs sour pump life cycle, reduces unnecessary parking loss, simultaneously, can also purify acid solution, reduces the acid tank spray nozzle clogging, improves pickling quality.

Description of drawings

Fig. 1 is the front view of the utility model structural representation;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the structural representation of screen pack.

Mark is as follows among the figure: casing 1, loam cake 2, acid inlet tube 3, go out acid tube 4, screen pack 5, drain valve 6, filtering holes 7, slot 8, flange 9, acidproof sealing gasket 10, bolt 11

The specific embodiment

Show among the figure, the utility model by casing 1, loam cake 2, acid inlet tube 3, go out acid tube 4, screen pack 5, drain valve 6 and form.Screen pack 5 is installed in the central authorities of casing 1, and space in the casing 1 is divided into two Room, acid inlet tube 3 and go out acid tube 4 respectively in the both sides of screen pack 5, and the position of acid inlet tube 3 is last, and the position that goes out acid tube 4 is down.Drain valve 6 is in the bottom of casing.

Screen pack 5 can be 1, also can be polylith, and the embodiment that shows among the figure is two.Filtering holes 7 is arranged on the screen pack 5, the diameter of filtering holes 7 is the largest particles diameters of allowing less than sour pump, the gross area in the aperture of single layer filter web plate 5 is greater than sour pump intake pipeline area 80%, the tangent plane along liquid flow direction of the casing 1 of this filter is long-pending much larger than sour pump intake pipeline area, guaranteed like this when foreign matter enters filter attached to screen pack 5, can also guarantee not produce air pocket in the sour pump operation process.Two screen packs 5 can be provided with different apertures; filtering holes 7 apertures near 3 one screen packs 5 of acid inlet tube are bigger; an aperture away from acid inlet tube 3 is less; like this foreign matter of different volumes is tackled stage by stage; can avoid simultaneously owing to all foreign matters that a screen pack 5 causes are all tackled at a place; the aperture is easily blocked, and the time of maintenance interval is extended greatly, saves the repair time when more effectively protecting the pump housing to guarantee to produce and reduces the maintenance number of times.Two screen packs 5 also can adopt same aperture, its advantage be ought a damage wherein after, one still can operate as normal, greatly reduces owing to screen pack 5 damages and causes foreign matter to enter the pump housing.The sour pump of more effective protection.

Screen pack 5 removably connects with being connected to of casing 1, and the embodiment that shows among the figure is that insertion slot type connects.On the inwall of the both sides of casing 1, slot 8 is arranged, screen pack 5 is inserted and can use, when maintenance or replacing, upwards extract screen pack 5, very convenient.

Loam cake 2 is fastenedly connected by bolt 11 above casing 1, and acidproof sealing gasket 10 is arranged between casing 1 and the loam cake 2.

The utility model course of work is:

Acid inlet tube 3 is connected the acid storage tank bottom by pipeline and flange, goes out acid tube 4 and is connected sour pump intake by pipeline and flange, and the acid solution of being come by acid storage tank enters casing 1 through acid inlet tube 3, enters sour pump by two-layer screen pack 5 backs from going out acid tube 4.In this process, surpass sour pump and allow the foreign matter of particle diameter to be tackled in filter by two-layer screen pack 5.In addition, can respectively increase a Pressure gauge in the gateway of filter simultaneously, the duty of reflection filter that can be real-time can use manpower and material resources sparingly according to pressure reduction arrangement cleaning.Whether drain valve 6 is used for the residual acid of exhaust filtering device when maintenance and can detects filter and stop up.

Claims

1. one kind is used to the filter of protecting sour pump to use; it is characterized in that: it by casing [1], loam cake [2], acid inlet tube [3], go out acid tube [4], screen pack [5], drain valve [6] and form; screen pack [5] is positioned at casing [1]; with the interior space segmentation of casing [1] is two Room; be evenly equipped with a plurality of filtering holes [7] on the screen pack [5]; acid inlet tube [3] and going out on the box body wall that acid tube [4] lays respectively at screen pack [5] both sides; loam cake [2] is in the top of casing [1]; with casing [1] be dismountable being fastenedly connected, drain valve [6] is in the bottom of casing [1].

2. the filter of protecting sour pump to use of being used to according to claim 1; it is characterized in that: described screen pack [5] is two; their parallel dischargings; filtering holes [7] diameter on the every screen pack [5] is identical; filtering holes [7] diameter of two screen packs [5] has difference; greater than the diameter near the filtering holes [7] of the screen pack [5] that goes out acid tube [4], screen pack [5] and casing [1] are for removably connecting near the diameter of the filtering holes [7] of the screen pack [5] of acid inlet tube [3].

3. the filter of protecting sour pump to use of being used to according to claim 2 is characterized in that: described acid inlet tube [3] and go out acid tube [4] end adpting flange [9] is arranged, flange [9] is connected with the acid solution conveyance conduit.

4. the filter of protecting sour pump to use of being used to according to claim 3 is characterized in that: between described casing [1] and the loam cake [2] acidproof sealing gasket [10] is arranged.