CN202876601U - Dust collection device with secondary dust collection function - Google Patents

Abstract

The utility model relates to a dust removal device with a secondary dust removal function, which comprises a cyclone separator and a secondary dust collector. The circumferential wall of the cyclone separator is provided with a material inlet, and the lower end of the cyclone separator is provided with a material outlet. There is a dust connecting pipe in the center of the top of the dust connecting pipe, the lower port of the dust connecting pipe is provided with a filter screen, and the upper port of the dust connecting pipe is connected with the main dust suction pipe; the material outlet of the cyclone separator is connected with a rotary valve, and a secondary dust removal is provided below the rotary valve. The feed port of the secondary dust collector is connected to the outlet of the rotary valve, and the exhaust port of the secondary dust collector is connected with the main dust suction pipe through the secondary dust suction pipe. The dedusting device can greatly reduce the dust content in the pulverized material after dust removal, and avoid the waste of the pulverized material.

Description

Dust removal device with secondary dust removal function

technical field

The utility model relates to a dust-removing device for crushed material of an automobile plastic fuel tank, in particular to a dust-removing device with a secondary dust-removing function.

Background technique

During the manufacturing process of plastic fuel tanks, a lot of waste materials will be generated due to trimming and scrapping. In order to reduce manufacturing costs and reduce pollutant emissions, the waste materials need to be crushed and reused. The crushed materials will carry a lot of dust and must be removed.

In the prior art, the pulverized material and dust are often separated by a cyclone separator. The circumferential wall of the cyclone separator is provided with a material inlet, the lower end of the cyclone separator is provided with a material outlet, and the top center of the cyclone separator is provided with a dust connecting pipe, and the upper port of the dust connecting pipe is connected with a dust suction pipe. The pulverized material enters the cyclone separator from the material inlet, and under the action of the centrifugal force generated by the cyclone and its own gravity, the pulverized material moves down along the circumferential wall of the cyclone separator to the material outlet and is discharged. The airflow enters the dust suction duct from the dust pipe. The existing dust removal device has the following disadvantages: 1. There is still a lot of dust in the crushed material after dust removal; 2. The dust after dust removal contains a large amount of crushed material, resulting in a great waste of cost.

Utility model content

The purpose of the utility model is to overcome the problems existing in the prior art and provide a dust removal device with a secondary dust removal function, which can greatly reduce the dust content in the pulverized material after dust removal.

In order to solve the above technical problems, a dust removal device with secondary dust removal function of the utility model includes a cyclone separator, a material inlet is provided on the circumferential wall of the cyclone separator, and a material inlet is provided at the lower end of the cyclone separator. Outlet, the top center of the cyclone separator is provided with a dust connecting pipe, the upper port of the dust connecting pipe is connected with the main dust suction pipe; the material outlet of the cyclone separator is connected with a rotary valve, and the bottom of the rotary valve is provided with A secondary dust collector, the feed port of the secondary dust collector is connected to the outlet of the rotary valve, and the air outlet of the secondary dust collector is communicated with the main dust suction pipeline through a secondary dust suction pipeline.

Compared with the prior art, the utility model has achieved the following beneficial effects: the pulverized material enters the cyclone separator from the material inlet, and under the action of the centrifugal force generated by the cyclone and its own gravity, the pulverized material moves downward along the circumferential wall of the cyclone separator to The material exits and enters the secondary dust collector through the rotary valve. The rotary valve can let the material pass through, and at the same time, it also plays the role of shutting off the air, so that the air passages of the cyclone separator and the secondary dust collector are mutually closed; crushed in the secondary dust collector The dust in the material is separated again, and the crushed material is purified; due to the negative pressure of the dust suction pipe, the dust separated by the cyclone separator and the secondary dust collector enters the dust suction pipe with the airflow.

As a preferred solution of the present utility model, the lower port of the dust connecting pipe is provided with a filter screen. Lighter dust can enter the dust suction pipe through the filter screen, which can effectively prevent the crushed material from entering the dust suction pipe and avoid the waste of crushed material.

As a further preferred solution of the present utility model, the secondary dust collector includes an upper cylinder and a lower cylinder connected to each other, the air outlet is connected to the circumferential wall of the upper cylinder, and the upper cylinder is equipped with There is a conical tube coaxial with the upper cylinder, the upper port of the conical tube protrudes out of the upper cylinder as the feed inlet, and a circular arc plate with a high center and low surroundings is provided directly below the conical tube , the lower port of the lower cylinder shrinks toward the axis to serve as a discharge port, and the upper port of the lower cylinder is provided with a plurality of air inlet holes, and each air inlet hole is evenly distributed along the outer periphery of the lower end of the upper cylinder. The pulverized material falls from the conical tube, falls in the middle of the circular arc plate, then slides down from the periphery of the circular arc plate, and finally is discharged from the discharge port. When the pulverized material falls, the dust is raised, due to the main suction pipe With negative pressure suction, the airflow enters the secondary dust collector from the air inlet, and the raised dust is taken out to further purify the crushed material.

Description of drawings

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings are only provided for reference and description, and are not intended to limit the utility model.

Fig. 1 is a structural schematic diagram of the dust removal device with secondary dust removal function of the present invention.

Figure 2 is the front view of the secondary dust collector.

FIG. 3 is a top view of FIG. 2 .

Fig. 4 is a sectional view along A-A in Fig. 3 .

FIG. 5 is a perspective view of FIG. 2 .

In the figure: 1. Cyclone separator; 1a. Material inlet; 1b. Material outlet; 1c. Filter screen; 1d. Dust connection; 2. Main dust suction pipe; 3. Rotary valve; 4. Secondary dust collector; 4a. Upper cylinder; 4a1. Exhaust outlet; 4b. Tapered pipe; 4b1. Inlet; 4c. Lower cylinder; 4c1. Outlet; 4c2. Air inlet; 4d. Dust suction pipe; 6. Damper.

Detailed ways

As shown in Figure 1, the utility model has the dedusting device of secondary dedusting function, comprises cyclone separator 1, and the circumferential wall of cyclone separator 1 is provided with material inlet 1a, and the lower end of cyclone separator 1 is provided with material outlet 1b, The top center of the cyclone separator 1 is provided with a dust connecting pipe 1d, the lower port of the dust connecting pipe 1d is provided with a filter screen 1c, and the upper port of the dust connecting pipe 1d is connected with the main dust suction pipe 2; the material outlet 1b of the cyclone separator 1 is connected with a rotary Valve 3, there is a secondary dust collector 4 below the rotary valve 3, the feed port 4b1 of the secondary dust collector 4 is connected to the outlet of the rotary valve 3, and the exhaust port 4a1 of the secondary dust collector 4 passes through the secondary dust suction pipe 5 communicates with the main dust suction pipeline 2, and the damper 6 for adjusting the air volume is installed on the secondary dust suction pipeline 5.

As shown in Figures 2 to 5, the secondary dust collector 4 includes an upper cylinder 4a and a lower cylinder 4c that are connected to each other. The air outlet 4a1 is connected to the peripheral wall of the upper cylinder 4a. A conical tube 4b coaxial with the upper cylinder, the upper port of the conical tube 4b protrudes outside the upper cylinder 4a as a feed port 4b1, and a circular arc plate 4d with a high center and low surroundings is provided directly below the conical tube 4b , the lower port of the lower cylinder 4c shrinks toward the axis as the discharge port 4c1, and the upper port of the lower cylinder 4c is provided with a plurality of air inlets 4c2 and each air inlet is evenly distributed along the outer periphery of the lower end of the upper cylinder 4a.

During work, the pulverized material enters the cyclone separator 1 from the material inlet 1a, and under the action of the centrifugal force generated by the cyclone and its own gravity, the pulverized material moves downward along the circumferential wall of the cyclone separator 1 to the material outlet 1b. 2, the lighter dust can enter the main dust suction pipe 2 through the filter 1c with the airflow, and the filter 1c can effectively prevent the crushed material from entering the main dust suction pipe 2, avoiding the waste of the crushed material; then the crushed material passes through The rotary valve 3 enters the secondary dust collector 4. In the secondary dust collector 4, the pulverized material falls from the conical pipe 4b, falls in the middle of the circular arc plate 4d, then slides from the periphery of the circular arc plate 4d, and finally from the outlet The material port 4c1 is discharged, and when the pulverized material falls, the dust is raised. Due to the negative pressure suction of the main dust suction pipe 2, the airflow enters the secondary dust collector 4 from the air inlet 4c2, and the raised dust is taken out. The pulverized material is further purified.

The above descriptions are only preferred feasible embodiments of the present utility model, and are not intended to limit the patent protection scope of the present utility model. In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (3)

1. dust arrester with final dusting function, comprise cyclone separator, the circle wall of described cyclone separator is provided with material inlet, the lower end of described cyclone separator is provided with material outlet, the top center of described cyclone separator is provided with dust and takes over, and the upper port that described dust is taken over is connected with main dust sucting pipeline; The material outlet of described cyclone separator is connected with rotary valve, it is characterized in that: the below of described rotary valve is provided with secondary filter, the charging aperture of described secondary filter is connected with the outlet of described rotary valve, and the exhaust outlet of described secondary filter is communicated with described main dust sucting pipeline by the secondary dust sucting pipeline.

2. the dust arrester with final dusting function according to claim 1 is characterized in that: the lower port that described dust is taken over is provided with filter screen.

3. the dust arrester with final dusting function according to claim 1 and 2, it is characterized in that: described secondary filter comprises interconnective top cylindrical shell and bottom cylindrical shell, described exhaust outlet is connected on the circle wall of described top cylindrical shell, be provided with the conical pipe with top cylindrical shell coaxial line in the cylindrical shell of described top, it is outer as described charging aperture that the upper port of described conical pipe is stretched out the top cylindrical shell, be provided with height low arc plate all around in center under the described conical pipe, the lower port of described bottom cylindrical shell is shunk as discharging opening to axis, and the upper port of described bottom cylindrical shell is provided with a plurality of air admission holes and each air admission hole and evenly distributes along the lower end periphery of described top cylindrical shell.

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