CN214635084U

CN214635084U - Collecting and filtering device for rare earth metal polishing smoke dust

Info

Publication number: CN214635084U
Application number: CN202120438537.1U
Authority: CN
Inventors: 王志远; 林化成; 张军全; 何金辉; 王薪鹏; 肖暾
Original assignee: Jiangsu Jinshi Rare Earth Co ltd; Shandong Nanxi Jinshi New Material Co ltd
Current assignee: Jiangsu Jinshi Rare Earth Co ltd; Shandong Nanxi Jinshi New Material Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-11-09
Anticipated expiration: 2031-03-01

Abstract

The utility model discloses a rare earth metal polishing smoke dust collecting and filtering device, which comprises a dry type filtering device, a wet type filtering device and a discharging device; when the device is used, smoke dust enters the dry type filtering device, sparks are extinguished by the spark catcher, then the smoke dust enters the filter screen, and large-particle dust is intercepted and settled by the filter screen; at the moment, the small particles enter the spray tower, move from bottom to top and meet circulating water sprayed by the spray head, part of the circulating water is evaporated into steam, and the small particles are wetted by the steam, increase the particle size and the particle weight and settle to the bottom of the water tank; and a very small amount of dust rises to the top of the spray tower, and the tiny dust is mixed with water vapor, meets the national standard and can be directly discharged. The utility model realizes the safe collection and recycling of rare earth metal polishing smoke dust; the large-particle dust is intercepted by the filter screen with the large aperture, so that the subsequent wet-type filtering device only needs to deal with fine particles during operation, the efficiency is improved, and the cost is reduced.

Description

Collecting and filtering device for rare earth metal polishing smoke dust

Technical Field

The utility model relates to a tombarthite environmental protection treatment facility technique specifically is a collection filter equipment of tombarthite metal smoke and dust of polishing.

Background

The rare earth metal and the alloy generate smoke dust in the polishing process, the smoke dust is extremely active wave, and when the smoke dust meets air or gathers and flows, the smoke dust is easy to generate heat chemical reaction and even explode to cause serious accidents.

In the prior art, dust generated in the polishing process of the rare earth metal is removed and collected by a multi-purpose filter screen, so that the potential safety hazard is extremely high, the fine filter screen needs to be replaced or cleaned at a high frequency, the coarse filter screen is difficult to achieve the filtering effect, and the removed dust can not reach the national emission standard. The wet dust collector is used in a few factories, and the dust collector can reduce the hidden trouble of smoke dust explosion to a certain extent, but can cause the waste of water resources; if the water in the dust remover is recycled, the deposition of the smoke particles in the water tank is slow, the smoke particles approximately block the pipeline, and the filtering efficiency is low.

Disclosure of Invention

The utility model aims at providing a rare earth metal smoke and dust's collection filter equipment of polishing can realize that safety, high efficiency, low cost are collected the smoke and dust and filter, and finally discharge atmospheric middle micronic dust concentration and accord with the atmospheric pollutant emission standard that the country formulated.

The utility model adopts the technical proposal that: a collecting and filtering device for rare earth metal polishing smoke dust comprises a dry type filtering device, a wet type filtering device and a discharging device;

the dry type filtering device comprises a spark catcher, a dust collecting pipe, a dust collecting box and a filter screen; the spark catcher is connected with the filter screen, and the lower part of the filter screen is connected with the upper end of the dust collecting pipe; the lower end of the dust collecting pipe is connected with a dust collecting box;

the wet type filtering device comprises a spray tower, a spray pipe, a water tank and a motor; the spray tower is connected with the filter screen through a smoke pipe; the bottom of the spray tower is provided with a funnel-shaped outlet which leads to the water tank; the side wall of the water tank is provided with a water inlet for connecting a water inlet pipe; the motor is arranged above the water tank and provides power for a water pump in the water tank, the water pump is connected with the water inlet end of the spray pipe, the number of the water outlet ends of the spray pipe is 3, the spray pipes are longitudinally arranged and are respectively inserted from the side wall of the spray tower; the port of each water outlet end of the spray pipe is connected with a spray head, and the spray head faces downwards;

the discharging device comprises a smoke window, a protective frame and a fan; the smoke window is connected with the spray tower through a dust pipe; the protective frame is arranged around the smoke window to fix the smoke window; the fan is arranged in the middle of the dust pipe and provides positive pressure power or negative pressure power for the smoke dust in the smoke window of the spray tower.

Preferably, the pore size of the filter screen is 1-500 μm.

Preferably, the spark catcher, the smoke pipe, the spray tower, the water tank, the micro-dust pipe and the filter screen are made of stainless steel.

The device of the utility model realizes the filtration and recovery of smoke dust generated after the polishing of rare earth metal by two steps, and greatly increases the safety of equipment operation by adding a spark catcher in the dry type dust removal device; the large-particle dust is intercepted by the filter screen with the large aperture, so that the subsequent wet-type filtering device only needs to deal with fine particles during operation, the efficiency is improved, and the cost is reduced.

Drawings

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

in the figure, 1, a spark catcher, 2, a dust collecting pipe, 3, a dust collecting box, 4, a smoke pipe, 5, a spray tower, 6, a water inlet, 7, a spray pipe, 8, a motor, 9, a water tank, 10, a fan, 11, a micro-dust pipe, 12, a smoke window, 13, a protective frame and 14, a filter screen are arranged.

Detailed Description

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

As shown in fig. 1, a collecting and filtering device for rare earth metal grinding smoke dust comprises a dry filtering device, a wet filtering device and a discharging device;

the dry type filtering device comprises a spark catcher 1, a dust collecting pipe 2, a dust collecting box 3 and a filter screen 14; the spark catcher 1 is connected with a filter screen 14, and the lower part of the filter screen 14 is connected with the upper end of a dust collecting pipe 2; the lower end of the dust collecting pipe 2 is connected with a dust collecting box 3;

the wet type filtering device comprises a spray tower 5, a spray pipe 7, a water tank 9 and a motor 8; the spray tower 5 is connected with the filter screen 14 through a smoke pipe 4; the bottom of the spray tower 5 is a funnel-shaped outlet which leads to a water tank 9; a water inlet 6 for connecting a water inlet pipe is formed in the side wall of the water tank 9; the motor 8 is arranged above the water tank 9 and provides power for a water pump in the water tank 9, the water pump is connected with the water inlet end of the spray pipe 7, the number of the water outlet ends of the spray pipe 7 is 3, the water outlet ends are longitudinally arranged and are respectively inserted from the side wall of the spray tower 5; the port of each water outlet end of the spray pipe 7 is connected with a spray head, and the spray head faces downwards;

the discharging device comprises a smoke window 12, a protective frame 13 and a fan 10; the smoke window 12 is connected with the spray tower 5 through a dust pipe 11; the protective frame 13 is arranged around the smoke window 12 to fix the smoke window 12; the fan 10 is arranged in the middle of the dust particle pipe 11 and provides positive pressure power or negative pressure power for the smoke dust in the smoke window 12 of the spray tower 5. The aperture of the filter screen 14 is 1-500 μm.

When the dust collector is used, smoke dust generated during polishing of rare earth metals or alloys enters the spark catcher 1, sparks generated in the smoke dust are extinguished by the spark catcher 1, then the smoke dust enters the filter screen 14 at the tail end of the spark catcher 1, large-particle dust is intercepted by the filter screen 14, the volume of a pipeline at the section of the filter screen 14 is increased, and pressure is reduced, so that large-particle dust can be deposited into the dust collecting box 3 along the dust collecting pipe 2 under the action of gravity; at the moment, small particles enter the spray tower 5 through the smoke pipe 4, move from bottom to top under the driving of the fan 10, meet circulating water sprayed by the spray head, evaporate part of the circulating water into steam, increase the particle size and the particle weight after the dust of the small particles is wetted by the steam, and naturally settle to the bottom of the water tank 9; very little dust can rise to the top of the spray tower 5 without sedimentation, and the dust particles are mixed with water vapor and reach the emission standard of the air pollutants established by the state, enter the smoke window 12 through the dust particle pipe 11 and are discharged to the atmosphere through the smoke window 12.

When the equipment is operated, the motor 8 on the water tank 9 drives the water pump in the water tank 9, the water pump delivers water to the spray pipe 7, the water is sprayed out from the spray head, and a part of the water directly drops to the position near the funnel-shaped outlet at the bottom of the spray tower 5 and flows into the water tank 9 for recycling; one part is evaporated by the smoke dust and enters the atmosphere along with the tiny dust; less dust is settled in the spray tower 5, and the dust settled to the bottom of the water tank 9 cannot enter the circulation again to cause pipeline blockage; when the water storage in the water tank 9 is insufficient, water is added into the water tank 9 from the water inlet 6 on the side wall of the water tank 9.

Claims

1. A collecting and filtering device for rare earth metal polishing smoke dust is characterized by comprising a dry filtering device, a wet filtering device and a discharging device;

the dry type filtering device comprises a spark catcher (1), a dust collecting pipe (2), a dust collecting box (3) and a filter screen (14); the spark catcher (1) is connected with a filter screen (14), and the lower part of the filter screen (14) is connected with the upper end of a dust collecting pipe (2); the lower end of the dust collecting pipe (2) is connected with a dust collecting box (3);

the wet type filtering device comprises a spray tower (5), a spray pipe (7), a water tank (9) and a motor (8); the spray tower (5) is connected with the filter screen (14) through a smoke pipe (4); the bottom of the spray tower (5) is provided with a funnel-shaped outlet which leads to the water tank (9); a water inlet (6) for connecting a water inlet pipe is formed in the side wall of the water tank (9); the motor (8) is arranged above the water tank (9) and provides power for a water pump in the water tank (9), the water pump is connected with the water inlet end of the spray pipe (7), the number of the water outlet ends of the spray pipe (7) is 3, the water outlet ends are longitudinally arranged and are respectively inserted from the side wall of the spray tower (5); the port of each water outlet end of the spray pipe (7) is connected with a spray head, and the spray head faces downwards;

the discharge device comprises a smoke window (12), a protective frame (13) and a fan (10); the smoke window (12) is connected with the spray tower (5) through a dust pipe (11); the protective frame (13) is arranged around the smoke window (12) to fix the smoke window (12); the fan (10) is arranged in the middle of the dust particle pipe (11) and provides positive pressure power or negative pressure power for the smoke dust in the smoke window (12) of the spray tower (5).

2. A collecting and filtering device for rare earth metal grinding smoke dust according to claim 1, wherein the aperture of said filtering net (14) is 1-500 μm.

3. The device for collecting and filtering rare earth metal grinding smoke dust according to claim 1, wherein the spark catcher (1), the smoke dust pipe (4), the spray tower (5), the water tank (9) and the micro dust pipe (11) are made of stainless steel.