CN2138520Y

CN2138520Y - Purifier for lead smoke

Info

Publication number: CN2138520Y
Application number: CN 92217548
Authority: CN
Inventors: 杨文彪
Original assignee: QIONGZHOU PREFECTURE PRINTING MACHINERY FACTORY HUNAN PROV
Current assignee: QIONGZHOU PREFECTURE PRINTING MACHINERY FACTORY HUNAN PROV
Priority date: 1992-08-03
Filing date: 1992-08-03
Publication date: 1993-07-21
Anticipated expiration: 2002-08-03

Abstract

The utility model relates to a purifier for lead smoke, wherein, a box type container is divided into three independent I, II, III working chambers by partition boards; the three independent working chambers are connected successively in series by an overflow weir; the I working chamber is provided with a venturi tube, the II working chamber which is provided with a foam collecting rack is used as a foam catching chamber, and the III working chamber which is provided with a bag filter is used as a filter chamber. The utility model uses the high pressure air as the working medium, and an air pump is arranged on the bottom of the purifier. The utility model can also purify the lead smoke by combining with chemistry. Hence, the utility model has the advantages of compact structure and good purifying effect, which is especially suitable for type casting operation.

Description

Purifier for lead smoke

The lead fume clarifier.The process and the equipment that belong to separating gas mixture.

Produce lead fume in the operation of typefounding molten lead, still do not have desirable purifier at present.A kind of device that utilizes Venturi tube wet method deleading is arranged, and is to load onto a micro pump in a box-type container, is pumped up water to Venturi tube by water pump, causes negative pressure by water flow jet, the suction lead fume.This deleading device has certain effect, but owing to be that simple water absorbs, because service condition differs, design parameter is wayward, and result of use is unsatisfactory.

It is a kind of effective except that lead fume that the purpose of this utility model is to provide, and is easy to regulate the lead fume clarifier of control.

Solution of the present utility model is with dividing plate box-type container to be separated into three independently operating rooms, three independently the operating room contact successively by the enterprising downflow weir that goes out down.The 1st operating room is dust suction chamber.Be equipped with the high pressure gas is the Venturi tube of working media.High velocity air causes negative pressure by Venturi tube, the suction lead fume.The aqueous vapor nozzle of Venturi tube has at least one aciculiform water pipe, high velocity air before the mixed zone in the future to the clean water atomizing of aciculiform water pipe, mixed airflow mixes once more with water below first operating room's liquid level, produce a large amount of bubbles, enter the II operating room by downflow weir, second operating room is a foam collecting chamber.Sodium hydroxide solution or acetate type chemical agent are housed in this operating room.At least one foam collecting frame is arranged, and splendid attire is wadding fibrous in the collecting frame.Air communication behind the collecting foam is crossed downflow weir and is entered the III operating room, and the III operating room is the filter chamber, and purified gas enters atmosphere by the opening of bag filter.Three different liquid levels of operating room's control, and independently sewage draining exit is arranged, compacter in order to make clarifier, air pump is installed in the clarifier bottom, and the Venturi tube aqueous vapor nozzle that the high-pressure air pipe of air pump passes II operating room and I operating room joins.

The utility model is the wet cleaning device, is aided with mechanical filter, chemical cleaning method.Therefore remove the respond well of lead fume, and can control different flow and liquid level, be easy to find suitable operating point according to service condition.

Accompanying drawing 1 is a scheme of installation of the present utility model.

Accompanying drawing 2 is the utility model box-type container B-B floor map.

Accompanying drawing 3 is the utility model A-A generalized sections.

Air pump (2) is installed in purification equipment for separating lead powder from air (1) bottom. The high-pressure air pipe of air pump passes the II operating room and is connected with I operating room aqueous vapor nozzle (7), and purification equipment for separating lead powder from air is connected with dust gathering arrester (3) on the lead pan by tube connector. Box-type container (4) is separated into three independently I, III, III operating rooms with dividing plate (6), (5). And contact successively by downflow weir. A whole cover plate is arranged above the box-type container, at I operating room cover plate a round hole is arranged, Venturi tube (8) is installed in that aqueous vapor nozzle (7) is installed in above the cover plate below the cover plate, at II operating room cover plate three round holes are arranged, one of them perforate is air pump (2) high-pressure air pipe tedge, foam collecting frame is laid in two perforates in addition, on III operating room's cover plate five round holes is arranged, in order to lay bag filter (9).

The utility model adopts rigid plastic sheet to make box-type container (4), Venturi tube (8), aqueous vapor nozzle (7) in force.Make of metal material with the pipe that dust gathering arrester (3) is connected, three independently operating room's sewage draining exit bottle up with plug screw, 40 ° of the cone angles of aqueous vapor nozzle (7), 80 ° of pressurization nozzle cone angles, throat pipe diameter 20mm, long 165mm, 8 ° of outlet cone angles, air pump uses J2126 type pressure greater than the 1000mm water column, 12 meters of air quantity ³/ minute, the clean air after purifying contains Pb less than 0012mg/m ³, purifying rate reaches more than 97%, and the sewage of discharging contains Pb less than 003mg/L.

Claims

1, a kind of lead fume clarifier, be in a box-type container, Venturi tube to be installed, it is characterized in that box-type container (4) is separated into three independently I, II, III operating rooms with dividing plate (6), (5), contacts successively by the enterprising downflow weir that goes out down in three chambers that work alone.Box-type container (4) has a cover plate, and air water nozzle (7) is installed on the cover plate of I operating room, and Venturi tube (8) has foam collecting frame in the II operating room, and III has bag filter in the operating room, and Venturi tube is working media with the high pressure gas.

2, according to the lead fume clarifier of claim 1, it is characterized in that air pump (2) is installed in the bottom of lead fume clarifier (1), high-pressure air pipe passes the II operating room and air water nozzle (7) joins.

3,, it is characterized in that there are three independently sewage draining exits three chambers of working alone in the box-type container (4) according to the lead fume clarifier of claim 1.