CN204842013U - Powder spray device - Google Patents

Abstract

The utility model discloses a powder spraying device, which comprises a powder spraying funnel and a conveying fan arranged separately; The air outlet of the fan is connected to a special-shaped air duct, the special-shaped air duct is a three-way structure, and the two coaxial interfaces at the bottom are respectively connected to the air outlet of the conveying fan and the air inlet of the powder spraying pipe. The outlet of the conveyor of the powder funnel is vertically connected, and the powder spraying pipe is connected to the air inlet pipe of the main unit of the dust collector. The fine powder is conveyed by the conveyor from the powder spraying funnel, then enters the special-shaped air duct, is blown away by the conveying fan, and evenly enters the raw air chamber of the main machine to absorb the oily dust. The utility model has the beneficial effects of simple structure, convenient maintenance, flexible operation and good powder spraying effect, and can be used with dust collectors in various occasions where viscous dust is generated.

Description

A powder spraying device

technical field

The utility model belongs to the technical field of dedusting with viscous dust, in particular to a powder spraying device for controlling oil fume and dust.

Background technique

In the iron and steel foundry workshop, a large amount of soot and dust is easy to be generated. During the collection process of this kind of soot and dust, the oily components in the dust are easy to adhere to the surface of filter media such as filter cartridges or filter bags, resulting in hardening of filter cartridges or filter bags. It is unfavorable to carry out back blowing and dust removal on the filter cartridge or filter bag, and it will cause serious clogging of the filter medium, increase the running resistance of the dust collector, and directly affect the normal operation of the dust collector.

At present, most of the dust removal equipment for the treatment of sticky dust such as oil fume is to spray a layer of dry fine powder on the dust removal medium such as the filter cartridge or filter bag in advance, so that the filter cartridge or filter element will first adhere to the dry dust before contacting the oil fume. Fine powder, then the oily substance on the fume will directly adhere to the fine powder when it is filtered, and will not bond with the filter medium, and then clean the dust collector. At present, the powder spraying devices in the market are all through direct blowing. The fine powder is easy to agglomerate, has the disadvantages of uneven powder spraying, and easy blockage of the pipeline. After the pipeline is blocked, it is inconvenient to enter the powder container for maintenance.

Utility model content

The technical problem solved by the utility model is to provide a new type of powder spraying device for the defects of uneven powder spraying and inconvenient maintenance in the current powder spraying device for dealing with oil fume, which can effectively realize the dust removal of oil fume, etc. With viscous dust control, and uniform powder spraying, easy maintenance.

The utility model adopts following technical scheme to realize:

A powder spraying device, comprising a powder spraying funnel 1 of a split structure and a conveying fan 6;

The powder spraying funnel 1 is used to store fine powder, and the powder spraying funnel 1 is arranged on the top of the conveying fan 6 through the bracket 10;

The conveying fan 6 is used for blowing fine powder, and the air outlet of the conveying fan 6 is connected with a special-shaped air pipe 7, and the special-shaped air pipe 7 is a three-way structure, and two coaxially connected interfaces at the bottom are respectively connected to the air outlet of the conveying fan and the air outlet of the conveying fan. The powder spraying pipeline 9 is provided with an interface vertically connected with the discharge port of the powder spraying funnel 1 at the top;

The powder spraying pipe 9 is connected to the main air inlet pipe of the dust collector.

Further, the discharge port at the bottom end of the powder spraying funnel 1 is connected with a conveyor 3 , and the discharge port of the powder spraying funnel 1 is extended to above the top interface of the special-shaped air duct 7 .

Preferably, the conveyor 3 is a screw conveyor with a sealed structure, and the screw conveyor is driven by a frequency conversion motor 5 connected to a reducer 4 .

Further, the special-shaped air duct 7 is square, and communicates with the circular powder spraying duct 9 through the sky-round local duct 8 .

Further, the bottom of the powder spraying funnel 1 is provided with a material level gauge 2 .

In the present utility model, the conveying fan 6 is a centrifugal fan.

The powder spraying funnel and conveying fan of the utility model adopt a split structure, which is more convenient for maintenance and maintenance. The fine powder in the powder spraying funnel is transported into the special-shaped air duct through the screw conveyor with a frequency conversion motor, and the fine powder falling from the entrance of the special-shaped air duct The powder is under the action of the centrifugal fan, and the screw conveyor can crush the agglomerated fine powder, which is conducive to blowing by the conveying fan. At the same time, the frequency conversion motor connected to the conveyor can adjust the conveying amount of dust, and the dust is evenly blown into the powder by the fan. In the pipeline, the fan generates a certain amount of air volume during the working process, and the certain wind speed makes the fine powder appear as dust, and then evenly enters the raw air chamber of the host machine, and the fine powder is wrapped on the surface of the sticky dust to absorb oily dust. Protect the filter medium in the main unit from sticking by oily smoke.

From the above, the utility model has the beneficial effects of simple structure, convenient maintenance, flexible operation, and good powder spraying effect, and can cooperate with dust collectors for flue gas dust removal in various occasions where viscous dust is generated.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the front view of the powder spraying device in the utility model.

Fig. 2 is a side view of the powder spraying device in the utility model.

Labels in the figure: 1-dusting funnel, 2-feeding level meter, 3-conveyor, 4-reducer, 5-frequency conversion motor, 6-conveying fan, 7-shaped air duct, 8-round place pipe, 9-dusting pipeline, 10-support.

Detailed ways

Example

Referring to Fig. 1 and Fig. 2, a kind of powder spraying device, powder spraying funnel 1 and delivery fan 6, powder spraying funnel 1 is arranged on the top of delivery fan 6 through frame 10, powder spraying funnel 1 is used for storing fine powder, and fine powder can be Using talcum powder, the bottom of the powder spraying funnel 1 is equipped with a lower material level gauge 2, which can be used to monitor the fine powder capacity in the powder spray hopper in real time. When the fine powder capacity falls below the lower material level gauge 2, the lower material level gauge 2 An alarm will be given to indicate that the fine powder in the powder spraying funnel is not enough, and the fine powder can be replenished in the powder spraying funnel through the openable cover plate on the top of the powder spraying hopper 1.

The conveying fan 6 is arranged under the powder spraying funnel 1, and is used to blow the fine powder falling from the outlet of the powder spraying funnel 1 to the interior of the dust collector. Specifically, the air outlet of the conveying fan 6 is connected to a special-shaped air duct 7, and the special-shaped The air duct 7 is a three-way structure, and the two coaxial interfaces at the bottom are connected to the air outlet of the conveying fan and the powder spraying pipe 9 respectively. , the powder spraying pipe 9 is connected to the air inlet pipe of the main machine of the dust collector, and the top of the special-shaped air pipe 7 is provided with an interface vertically connected with the discharge port of the powder spraying funnel 1.

The conveying fan 6 of this embodiment is preferably a centrifugal fan, which is more conducive to pipeline transportation.

Preferably, the discharge port at the bottom of the powder spraying funnel 1 is docked with a conveyor 3, and the discharge port of the powder spraying funnel 1 is extended to the top interface of the special-shaped air duct 7, and the conveying amount of dust can be controlled by the conveyor at the same time. control.

In this embodiment, the conveyor 3 is a screw conveyor with a sealed structure, and the screw conveyor is driven by a frequency conversion motor 5 connected to a reducer 4, and the feeding end of the screw conveyor is sealed and communicated with the bottom outlet of the powder spraying funnel. The discharge end of the screw conveyor is used as the actual discharge port of the powder spraying funnel to connect with the special-shaped air duct. The screw conveyor is driven by a reducer connected with a frequency conversion motor, and the powder delivery volume of the screw conveyor is controlled by the speed of the frequency conversion motor 5. Due to the circulating airflow formed by the conveying fan at the bottom of the special-shaped air duct 7, it will affect the outlet of the powder spraying funnel 1. The dust falling from the feed port generates a certain traction force, which sucks the dust into the special-shaped air duct 7 and transports it to the powder spraying duct 9 to prevent the dust from overflowing when it falls into the special-shaped air duct. According to the air volume of the conveying fan, the powder spraying The position of the actual outlet of funnel 1 (that is, the outlet of the screw conveyor) should not be too higher than the height of the top interface of the special-shaped air duct 7, preferably flush.

The specific working process of the utility model is as follows: when the frequency conversion motor 5 and the reducer 4 are in the open state, the screw conveyor is in the working state, and the fine powder in the powder spraying funnel 1 enters the feed port of the screw conveyor under the action of gravity, The screw conveyor sends the fine powder to the top interface of the special-shaped air duct 7 and falls. Under the action of the centrifugal fan, the fine powder enters the powder spraying pipe in the form of flying dust, and finally the uniform and oily dust gas enters the original air chamber of the host. The powder injection pipe and the dust removal pipe are connected with the primary air chamber of the main engine of the dust collector through a three-way pipe, and the fine powder dust and oily dust are wrapped on the filter medium to prevent the oily dust from directly contacting the filter medium and causing the filter medium to be hardened and blocked.

The above is a preferred embodiment of the present utility model, but those skilled in the art should understand that, without departing from the spirit and scope of the present utility model defined by the appended claims, all modifications made to the utility model in terms of form and details All these changes belong to the protection scope of the present utility model.

Claims (6)

1. A powder spraying device, characterized in that: comprising a powder spraying funnel (1) of a split structure and a delivery fan (6); The powder spraying funnel (1) is arranged on the top of the conveying fan (6) through a support (10); The air outlet of the conveying fan (6) is connected to a special-shaped air pipe (7), the special-shaped air pipe (7) is a three-way structure, and the two coaxial interfaces at the bottom are respectively connected to the air outlet of the conveying fan and the powder spraying pipe (9), the top is provided with an interface vertically docked with the outlet of the powder spraying funnel (1); The powder spraying pipeline (9) is connected to the main air inlet pipeline of the dust collector. 2. A kind of powder spraying device according to claim 1, the discharge port at the bottom end of the powder spray funnel (1) is docked with a conveyor (3), and the discharge port of the powder spray funnel (1) is extended to Above the top interface of the special-shaped air duct (7). 3. A powder spraying device according to claim 2, wherein the conveyor (3) is a screw conveyor with a sealed structure, and the screw conveyor is driven by a frequency conversion motor (5) connected to a reducer (4). 4. A powder spraying device according to claim 3, wherein the special-shaped air duct (7) is square, and communicates with a circular powder spraying duct (9) through a round sky pipe (8). 5. A powder spraying device according to claim 4, the bottom of the powder spraying funnel (1) is provided with a material level gauge (2). 6. A powder spraying device according to any one of claims 1-5, wherein the conveying fan (6) is a centrifugal fan.