Annular suction gas-collecting hood

Abstract

The utility model discloses an annular suction gas-collecting hood which comprises a shell and a gas-collecting pipeline communicated with the shell, and the shell comprises an annular top surface, an outer annular side wall and an annular bottom surface; the annular top surface, the outer ring side wall and the annular bottom surface are enclosed to form an annular square cylindrical structure with an inner ring opening, and the inner ring opening is an annular opening or a flow guide opening. Compared with a traditional side suction and top suction collecting mode, the annular suction gas collecting hood has the advantages that under the condition that raw material adding is not affected, very high collecting efficiency is guaranteed, and the collecting rate can reach 95% or above.

Description

TECHNICAL FIELD

[0001] The utility model relates to material bin feeding dust removal, mainly is the technical field of electric furnace feeding and discharging dust removal, concretely relates to a ring suction gas collecting cover. BACKGROUND

[0002] For the material bin with the opening upward, under the working condition of adding raw materials, the raw materials falling into the material bin mouth usually need to be collected and treated first. The traditional collection method is mainly side suction or top suction. The side suction collection is uneven, the collection effect is poor, and the near-end material is easily sucked in, affecting the material adding efficiency. The top suction also affects the absorption effect due to the high installation position, and the power consumption is large. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a ring suction gas collecting cover, which has very high collection efficiency without affecting the addition of raw materials.

[0004] The utility model technical scheme is described in detail as follows:

[0005] A ring suction gas collecting cover comprises a shell and a gas collecting pipeline communicated with the shell, the shell comprises a ring-shaped top surface, an outer ring side wall and a ring-shaped bottom surface; the ring-shaped top surface, the outer ring side wall and the ring-shaped bottom surface form a ring-shaped square cylindrical structure with an inner ring opening, and the inner ring opening is a ring-shaped port or a flow guide port.

[0006] Optionally or preferably, the inner ring opening of the above-mentioned ring suction gas collecting cover is a ring-shaped port; the shell further comprises an upper inner ring side wall and a lower inner ring side wall, the upper end of the upper inner ring side wall is fixedly connected with the ring-shaped top surface, the lower end of the lower inner ring side wall is fixedly connected with the ring-shaped bottom surface, and the gap between the upper inner ring side wall and the lower inner ring side wall forms the ring-shaped port.

[0007] Optionally or preferably, the inner ring opening of the above-mentioned ring suction gas collecting cover is a flow guide port; a plurality of first flow guide plates are arranged in the shell, the upper end of each first flow guide plate is fixedly connected with the ring-shaped top surface, and the lower end is fixedly connected with the ring-shaped bottom surface; one end of each first flow guide plate away from the inner ring opening is inclined towards the direction of the gas collecting pipeline, and the adjacent two first flow guide plates and the ring-shaped top surface and the ring-shaped bottom surface form a flow guide port.

[0008] Optionally or preferably, the ring suction gas collecting cover has a gap between one end of each first flow guide plate away from the inner ring opening and the outer ring side wall to form a flow guide channel.

[0009] Optionally or preferably, the inclination angle of each first flow guide plate is between 60° and 85°. The inclination angle is the included angle between the first flow guide plate and the radius line of the ring-shaped top surface and the ring-shaped bottom surface.

[0010] Optionally or preferably, the ring suction gas collecting hood as claimed in any one of the above, the shell is further provided with a second flow guide plate, the second flow guide plate is a bent plate, the upper end of the second flow guide plate is fixedly connected with the annular top surface, and the lower end is fixedly connected with the annular bottom surface; the second flow guide plate is arranged on the opposite surface of the connecting position of the shell and the gas collecting pipeline.

[0011] Optionally or preferably, the ring suction gas collecting hood as claimed in any one of the above, the bending angle of the second flow guide plate is 105°-135°.

[0012] Optionally or preferably, the ring suction gas collecting hood as claimed in any one of the above, the left and right ends of the second flow guide plate are fixedly connected with the outer ring side wall of the shell.

[0013] Compared with the prior art, the ring suction gas collecting hood has the following beneficial effects:

[0014] The ring suction gas collecting hood is installed at the opening of the material bin, the dust and waste gas brought in the raw materials can be sucked into the circumferential gas collecting hood and enter the gas collecting pipeline along the flow guide plate, the collection of the dust and waste gas is more uniform and complete, compared with the traditional side suction and top suction collection mode, the ring suction gas collecting hood does not affect the addition of raw materials, ensures very high collection efficiency, and can achieve a collection rate of more than 95%. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an overall structure schematic view of the ring gas collecting hood installed at the opening of the material bin in embodiment 1.

[0016] Figure 2 It is an arrangement schematic view of the flow guide plate of the ring gas collecting hood in embodiment 1.

[0017] Figure 3 It is an overall structure schematic view of the ring gas collecting hood in embodiment 2.

[0018] Figure 4 It is an inner flow guide channel structure schematic view of the ring gas collecting hood in embodiment 2.

[0019] REFERENCE SIGNS:

[0020] 1-shell, 11-outer ring side wall, 12-annular top surface, 13-annular bottom surface, 14-first flow guide plate, 15-second flow guide plate, 16-upper inner ring side wall, 17-lower inner ring side wall, 2-gas collecting pipeline, 3-material bin opening, 4-flow guide channel, 5-annular port, 6-flow guide port. DETAILED DESCRIPTION

[0021] In order to enable the personnel in the technical field to better understand the present application, the present application will be clearly and completely described below in conjunction with the embodiments and drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0022] Embodiment 1

[0023] Please refer to Figure 1 A ring suction gas collecting hood is installed on the silo opening 3 to surround the silo opening 3, which comprises a shell 1 and a gas collecting pipe 2 in communication with the shell 1. The gas collecting pipe 2 is vacuumed by a fan to form a negative pressure to transport the collected waste gas and impurities and other substances to a predetermined place.

[0024] The shell 1 is a ring-shaped square cylindrical structure with an inner ring opening, which is surrounded by an outer ring side wall 11, a ring top surface 12 and a ring bottom surface 13. The shell 1 is provided with a second flow guide plate 15 and a plurality of first flow guide plates 14.

[0025] Please refer to Figure 2 In combination with Figure 1 The second flow guide plate 15 is a bent plate arranged on the opposite surface of the connection between the shell 1 and the gas collecting pipe 2. The left and right ends of the second flow guide plate 15 are fixedly connected with the outer ring side wall 11 of the shell 1, the upper end is fixedly connected with the ring top surface 12, and the lower end is fixedly connected with the ring bottom surface 13. The first flow guide plates 14 are uniformly distributed on both sides of the second flow guide plate 15 to the connection between the shell 1 and the gas collecting pipe 2. The upper end of the first flow guide plate 14 is fixedly connected with the ring top surface 12, and the lower end is fixedly connected with the ring bottom surface 13. The ring top surface 12, the adjacent two first flow guide plates 14 and the ring bottom surface 13 form a flow guide port 6. The end of the first flow guide plate 14 away from the inner ring opening is inclined to the direction of the gas collecting pipe 2, and a gap is left between the end of the first flow guide plate 14 away from the inner ring opening and the outer ring side wall 11 to form a flow guide channel 4.

[0026] In order to meet the demand of high-efficiency dust / waste gas collection, the inclination angle of the first flow guide plate 14 is between 60° and 85°, and the best is 60°. The inclination angle is the included angle between the first flow guide plate 14 and the radius line r of the ring top and bottom surfaces. The bending angle of the second flow guide plate is between 105° and 135°, and the best is 120°.

[0027] The ring suction gas collecting hood of the present application can achieve a dust / waste gas collection efficiency of more than 95% without affecting the addition of raw materials.

[0028] Embodiment 2

[0029] Please refer to Figure 3 And Figure 4The embodiment is different from the embodiment 1 in that the first flow guide plate 14 and the second flow guide plate 15 are not arranged, and the inner ring opening is designed as a ring-shaped opening 5. In the embodiment, the shell 1 further comprises an upper inner ring side wall 16 and a lower inner ring side wall 17. The upper end of the upper inner ring side wall 16 is fixedly connected with the ring-shaped top surface 12, and the lower end of the lower inner ring side wall 17 is fixedly connected with the ring-shaped bottom surface 13. The gap between the upper inner ring side wall 16 and the lower inner ring side wall 17 forms the ring-shaped opening 5. The cavity surrounded by the upper inner ring side wall 16, the ring-shaped top surface 12, the outer ring side wall 11, the ring-shaped bottom surface 13 and the lower inner ring side wall 17 in sequence is the flow guide channel 4, which is communicated with the gas collecting pipe 2.

[0030] The specific examples are applied to elaborate the inventive concept in detail in the present text. The above embodiment is only used to help understand the core idea of the present application. It should be pointed out that any obvious modification, equivalent replacement or other improvement made by the ordinary skilled in the art without departing from the inventive concept should be included in the protection scope of the present application.

Claims

1. A ring-type gas collection hood, characterized in that, The device includes a shell and a gas collecting pipe connected to the shell. The shell includes an annular top surface, an outer annular sidewall, and an annular bottom surface. The annular top surface, outer annular sidewall, and annular bottom surface enclose and form an annular square cylindrical structure with an inner annular opening. The inner annular opening is an annular opening or a flow guide. The inner ring opening is an annular opening; the housing also includes an upper inner ring sidewall and a lower inner ring sidewall, the upper end of the upper inner ring sidewall is fixedly connected to the top surface of the annulus, the lower end of the lower inner ring sidewall is fixedly connected to the bottom surface of the annulus, and the gap between the upper inner ring sidewall and the lower inner ring sidewall forms an annular opening. The inner ring opening is a flow guide; the housing is provided with a plurality of first flow guide plates, the upper end of the first flow guide plate is fixedly connected to the top surface of the ring, and the lower end is fixedly connected to the bottom surface of the ring; the end of the first flow guide plate away from the inner ring opening is inclined towards the gas collection pipe, and two adjacent first flow guide plates, together with the top surface and the bottom surface of the ring, form a flow guide. The tilt angle of the first guide vane is between 60° and 85°.

2. The annular suction gas collection hood according to claim 1, characterized in that, A gap is left between the end of the first guide plate away from the inner ring opening and the outer ring sidewall to form a guide channel.

3. The annular suction gas collection hood according to claim 1 or 2, characterized in that, The housing is also provided with a second guide plate, which is a bent plate. The upper end of the second guide plate is fixedly connected to the annular top surface and the lower end is fixedly connected to the annular bottom surface. The second guide plate is located directly opposite the connection between the housing and the gas collection pipe.

4. The annular suction gas collection hood according to claim 3, characterized in that, The bending angle of the second guide vane is between 105° and 135°.

5. The annular suction gas collection hood according to claim 3, characterized in that, The second guide plate is fixedly connected to the outer ring sidewall of the shell at both its left and right ends.

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