Dust circulating device for secondary zinc oxide settling chamber

Abstract

The utility model discloses a secondary zinc oxide settling chamber dust circulating device which comprises a settling chamber, an air-closed auger conveyor, a dust storage pool, a bag-type dust collector and a secondary zinc oxide raw material bin, and the settling chamber is connected with the dust storage pool through the air-closed auger conveyor. The secondary zinc oxide raw material bin is connected with a discharge port of the bag-type dust collector, and a feeding device is connected between the dust storage pool and the bag-type dust collector; compared with the prior art, the dust circulating device for the secondary zinc oxide settling chamber has the advantages that by arranging the transition bin and the air inlet pipe installed on the transition bin, when materials are fed to the bag-type dust collector, humid air does not directly enter the dust storage pool, and therefore the dust circulating device for the secondary zinc oxide settling chamber is not prone to falling off. In addition, a heating device is arranged on the inner wall of the feeding pipe, so that the wet secondary zinc oxide can be effectively prevented from blocking the feeding pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of zinc suboxide production, in particular to a dust circulation device for a zinc suboxide settling chamber. Background Art

[0002] During the zinc suboxide production process, solid waste raw materials are heated in a rotary kiln, and an airflow containing dust and zinc suboxide gas is discharged from the rotary kiln outlet. This part of the airflow needs to be settled in the settling chamber. The settled zinc suboxide will also be sent to the raw material bin for recovery through conveying equipment.

[0003] After searching, the Chinese utility model patent with application number 201821535693.4 is a dust circulation device for a secondary zinc oxide settling chamber, which includes a closed-air auger conveyor, a dust storage tank connected to the discharge port of the closed-air auger conveyor, a conveying pipeline connected to the dust storage tank, and a bag dust collector connected to the conveying pipeline; the side wall of the dust storage tank is provided with an interlayer for storing cooling water; the feed end of the conveying pipeline is located at the bottom of the dust storage tank, and the discharge end of the conveying pipeline is connected to the air inlet end of the bag dust collector.

[0004] In view of the above-mentioned prior art, the inventor believes that an air intake pipe is provided at the upper end of the dust storage pool. Although the air intake pipe is provided with a rainproof cap, when the air is humid, the bag dust collector will continue to bring humid air into the dust storage pool when extracting the powder in the dust storage pool, causing the powder to become moist. Therefore, the purpose of this application is to improve the existing technology to solve the above-mentioned problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a zinc oxide settling chamber dust circulation device to solve the above problems.

[0006] To achieve the above-mentioned purpose, the utility model provides a secondary zinc oxide settling chamber dust circulation device, comprising a settling chamber, a closed-air auger conveyor, a dust storage tank, a bag dust collector, and a secondary zinc oxide raw material bin, wherein the settling chamber is connected to the dust storage tank via the closed-air auger conveyor, the secondary zinc oxide raw material bin is connected to the discharge port of the bag dust collector, and a feeding device is connected between the dust storage tank and the bag dust collector;

[0007] The feeding device includes a transition bin, a feeding pipe connected between the transition bin and the lower end of the dust storage tank, a feeding pipe connected between the transition bin and the bag filter, and an air intake pipe arranged at the upper end of the transition bin.

[0008] Preferably, the feed pipe is equipped with an electric valve.

[0009] Preferably, a rainproof cap is fixed to the upper end of the air inlet pipe.

[0010] Preferably, the bottom of the dust storage tank is a V-shaped structure.

[0011] Preferably, a heating device is installed on the inner wall of the feeding pipe.

[0012] Preferably, an inner liner is vertically movable in the transition chamber, and a weight sensor is connected between the inner liner and the inner wall of the transition chamber.

[0013] Compared with the prior art, the utility model has the following advantages: the utility model provides a dust circulation device for a zinc oxide settling chamber, which, by providing a transition bin and an air intake pipe installed on the transition bin, prevents humid air from directly entering the dust storage pool when feeding the bag dust collector, thereby preventing the zinc oxide powder in the dust storage pool from getting damp; in addition, a heating device is installed on the inner wall of the feeding pipe, which can effectively prevent the moist zinc oxide from clogging the feeding pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic structural diagram of the utility model.

[0016] Figure 2 This is a schematic diagram of the feeding pipe structure of the utility model.

[0017] Figure 3 This is a schematic diagram of the transition warehouse structure of the present utility model.

[0018] In the figure: 10, sedimentation chamber; 20, closed-air auger conveyor; 30, dust storage tank; 40, bag dust collector; 50, secondary zinc oxide raw material warehouse; 60, feeding device; 61, transition bin; 611, liner; 612, weight sensor; 62, feed pipe; 63, feed pipe; 64, air intake pipe; 65, electric valve; 66, rain cap; 70, heating device. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-3 The specific implementation methods of the present utility model are further described in detail.

[0020] Depend on Figure 1-3The utility model provides a sub-zinc oxide settling chamber dust circulation device, comprising a settling chamber 10, a closed-air auger conveyor 20, a dust storage pool 30, a bag dust collector 40 and a sub-zinc oxide raw material bin 50. The settling chamber 10 is connected to the dust storage pool 30 through the closed-air auger conveyor 20, the sub-zinc oxide raw material bin 50 is connected to the discharge port of the bag dust collector 40, and a feeding device 60 is connected between the dust storage pool 30 and the bag dust collector 40. The settling chamber 10 is used to settle the sub-zinc oxide dust generated in the production process. The settled sub-zinc oxide is fed into the dust storage pool 30 through the closed-air auger conveyor 20, and is fed into the bag dust collector 40 through the feeding device 60. After being filtered by the bag dust collector 40, the sub-zinc oxide powder enters the interior of the sub-zinc oxide raw material bin 50 from the discharge port at the lower end of the bag dust collector 40.

[0021] In this embodiment, the feeding device 60 includes a transition bin 61, a feed pipe 62 connected between the transition bin 61 and the lower end of the dust storage pool 30, a feed pipe 63 connected between the transition bin 61 and the bag dust collector 40, and an air intake pipe 64 arranged at the upper end of the transition bin 61. During feeding, the sub-zinc oxide powder in the dust storage pool 30 first enters the transition bin 61 through the feed pipe 62, and then the negative pressure generated by the operation of the bag dust collector 40 causes the powder in the transition bin 61 to be fed into the bag dust collector 40 through the feed pipe 63. In this process, external air enters the bag dust collector 40 through the air intake pipe 64 and will not come into direct contact with the sub-zinc oxide powder in the dust storage pool 30, thereby preventing the sub-zinc oxide raw material bin 50 in the dust storage pool 30 from becoming moist. The sub-zinc oxide entering the sub-zinc oxide raw material bin 50 will be mixed with the sub-zinc oxide raw material, humidified and re-enter the rotary kiln, so whether it is moist or not will not have any effect.

[0022] Of course, when the air humidity is relatively high, the secondary zinc oxide powder may stick to the inner wall of the feeding pipe 63 when flowing in the feeding pipe 63, which may cause the feeding pipe 63 to be blocked in the long run. In order to prevent this problem from occurring, a heating device 70 is installed on the inner wall of the feeding pipe 63, and the heating device 70 can be an electric heating wire structure.

[0023] The feed pipe 62 is equipped with an electric valve 65 , which can be a star-shaped discharge valve to facilitate control of the discharge speed.

[0024] A rainproof cap 66 is fixed to the upper end of the air inlet pipe 64 to protect it from rain.

[0025] The bottom of the dust storage tank 30 is a V-shaped structure.

[0026] like Figure 3As shown, an inner liner 611 is vertically movable in the transition bin 61 , and a weight sensor 612 is connected between the inner liner 611 and the inner wall of the transition bin 61 . The weight sensor 612 can be used to easily know the amount of powder in the transition bin 61 .

[0027] The utility model discloses a dust circulation device for a secondary zinc oxide settling chamber, by providing a transition bin 61 and installing an air inlet pipe 64 on the transition bin 61, so that when feeding the bag dust collector 40, the humid air will enter the transition bin 61 instead of the dust storage tank 30, thereby avoiding the problem of humid air directly entering the dust storage tank 30 and causing the secondary zinc oxide powder in the dust storage tank 30 to become wet.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A zinc oxide settling chamber dust circulation device, comprising a settling chamber (10), a closed-air auger conveyor (20), a dust storage tank (30), a bag dust collector (40) and a zinc oxide raw material bin (50), wherein the settling chamber (10) is connected to the dust storage tank (30) via the closed-air auger conveyor (20), and the zinc oxide raw material bin (50) is connected to the discharge port of the bag dust collector (40), characterized in that: A feeding device (60) is connected between the dust storage tank (30) and the bag dust collector (40); The feeding device (60) includes a transition bin (61), a feeding pipe (62) connected between the transition bin (61) and the lower end of the dust storage tank (30), a feeding pipe (63) connected between the transition bin (61) and the bag filter (40), and an air intake pipe (64) arranged at the upper end of the transition bin (61).

2. A dust circulation device for zinc oxide settling chamber according to claim 1, characterized in that: The feed pipe (62) is equipped with an electric valve (65).

3. A dust circulation device for zinc oxide settling chamber according to claim 1, characterized in that: A rainproof cap (66) is fixed to the upper end of the air inlet pipe (64).

4. A dust circulation device for zinc oxide settling chamber according to claim 1, characterized in that: The bottom of the dust storage tank (30) is a V-shaped structure.

5. A dust circulation device for zinc oxide settling chamber according to claim 1, characterized in that: A heating device (70) is installed on the inner wall of the feeding pipe (63).

6. A dust circulation device for zinc oxide settling chamber according to claim 1, characterized in that: An inner liner (611) is vertically movable in the transition chamber (61), and a weight sensor (612) is connected between the inner liner (611) and the inner wall of the transition chamber (61).

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