Built-in pipeline type dust hood

Abstract

The utility model belongs to the field of smoke dust treatment equipment, and provides a built-in pipeline type dust collection cover which comprises a dust collection cover body, a dust collection cover body and a pipeline, the air pipe is provided with an air suction opening and an air outlet, the air suction opening is communicated with the air inlet in the dust collection cover body, and the air outlet is formed outside the dust collection cover body and communicated with the fan; and the mesh flow equalizing plate is connected to the air inlet. Through the arrangement of the mesh flow equalizing plate, the diameter of an airflow constant-speed surface with the air suction openings as the center is enlarged, namely the air suction range is enlarged, and the air suction openings are evenly distributed, so that sucked airflow is evenly distributed, vortexes are reduced, and smoke dust is prevented from being gathered and detained in a working area.

Description

Technical Field

[0001] The utility model relates to the field of soot treatment equipment, in particular to an internally piped dust hood. Background Art

[0002] At present, industrial production dust hoods mainly include ① closed dust hoods, ② semi-closed dust hoods, ③ up-draft dust hoods, and ④ side-draft dust hoods.

[0003] Closed dust hood

[0004] A closed dust hood is a dust hood that completely surrounds the soot emission source, limits the diffusion of pollutants within a closed space, and discharges them through exhaust ports provided on the top plate or side plates of the hood shell.

[0005] Semi-closed dust hood

[0006] A semi-closed dust hood has a certain opening, and exhaust ports are provided on the top plate or side plates of the hood shell.

[0007] Up-draft dust hood

[0008] An up-draft dust hood is mainly used to collect floating soot, and the exhaust port of the dust hood is provided on the top plate of the hood shell.

[0009] Side-draft dust hood

[0010] A side-draft dust hood is mainly used in working conditions where an up-draft dust hood cannot be installed due to the working process, or for soot spraying to one side. The exhaust port of the dust hood is provided on the top plate or side plates of the hood shell.

[0011] Disadvantages and deficiencies of this dust hood

[0012] Whether it is a closed dust hood, a semi-closed dust hood, an up-draft dust hood, or a side-draft dust hood, their structures are single-shell structures, surrounded by a top plate and side plates. The exhaust port is generally provided on the top plate, and the exhaust port is connected to an air duct and a dust removal and purification device. The dust-containing air flows out through the exhaust port and enters the dust removal and purification device through the air duct. In the internal air flow distribution of the single-shell dust hood, the flow velocity lines of the air flow are centered on the exhaust port and gradually attenuate fan-shaped around, that is, a spherical isovelocity surface is formed, and the wind speed gradually attenuates outward with the exhaust port as the center, resulting in long-term retention of soot at the edge of the dust hood, accounting for 1 / 3 of the hood body, endangering the health of workers, uneven air velocity and air volume inside the hood, and reducing the capture efficiency. Content of the utility model

[0013] An internally piped dust hood of the utility model is used to solve the related technical problems in the background art.

[0014] The technical solution provided by the utility model is as follows: An internally piped dust hood, comprising:

[0015] The dust collection hood body has an air inlet.

[0016] The air duct has an air suction port and an air outlet. The air suction port is communicated with the air inlet inside the dust collection hood body, and the air outlet is communicated with the fan outside the dust collection hood body; and

[0017] The mesh flow equalizing plate is connected at the air inlet.

[0018] In one embodiment, the dust collection hood body is an enclosure structure composed of a skeleton and a plate member, and the air inlet is opened on the plate member.

[0019] In one embodiment, the air inlet is at the bottom of the dust collection hood body.

[0020] In one embodiment, the air inlet is on the side direction of the dust collection hood body.

[0021] In one embodiment, the air inlet is vertically arranged.

[0022] In one embodiment, the air inlet is inclined.

[0023] In one embodiment, the air inlet is a bent setting combining upward inclination and downward verticality.

[0024] In one embodiment, the air duct is a pipe structure with one end open. Its open end is the air outlet, and the air suction port is opened on its side wall.

[0025] In one embodiment, the air suction port is a uniformly arranged large dispersed hole, and a grille is connected inside it.

[0026] In one embodiment, the air suction port is a uniformly arranged dense small hole.

[0027] Compared with the prior art, the beneficial effects of the present utility model are:

[0028] (1) The built-in pipeline type dust collection hood of the present utility model solves the problem that in the dust collection hood type collection method for the dust and waste gas generated in industrial production, due to the aggregation and retention of the dust, it endangers the health of front-line workers. Without increasing the fan speed and energy consumption, it improves the working environment, and at the same time avoids the diffusion of harmful gases to other workstations, ensuring the health of workers.

[0029] (2) The built-in pipeline type dust collection hood of the present utility model, through the setting of the mesh flow equalizing plate, expands the diameter of the air flow equipotential surface centered on the air suction port, that is, expands the air suction range. Coupled with the uniformly distributed air suction ports, the suction air flow is evenly distributed, reducing eddy currents and avoiding the aggregation and retention of dust in the working area. Description of the Drawings

[0030] Figure 1 is an isometric view of the built-in pipeline type dust collection hood of the present utility model;

[0031] Figure 2 is a schematic structural view of the built-in pipeline type dust hood in Embodiment 1 of the present utility model;

[0032] Figure 3 is an exploded view of the built-in pipeline type dust hood in Embodiment 1 of the present utility model;

[0033] Figure 4 is a schematic structural view of the built-in pipeline type dust hood in Embodiment 4 of the present utility model;

[0034] Figure 5 is an exploded view of the built-in pipeline type dust hood in Embodiment 4 of the present utility model;

[0035] Figure 6 is a schematic structural view of the air suction port in Embodiment 5 of the present utility model;

[0036] Figure 7 is a schematic structural view of the grille in Embodiment 5 of the present utility model;

[0037] Figure 8 is a schematic structural view of the air suction port in Embodiment 6 of the present utility model.

[0038] The reference numerals are as follows: 1. Dust hood body; 2. Air inlet; 3. Air duct; 4. Air suction port; 5. Air outlet; 6. Mesh flow equalizing plate; 7. Skeleton; 8. Plate member; 9. Grille. Detailed implementation manners

[0039] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those of ordinary skill in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0040] Such as Figure 1-8As shown in the figure, the utility model is an internal pipeline type dust collecting hood, which includes a dust collecting hood body 1, an air duct 3, and a mesh flow equalizing plate 6. An air inlet 2 is opened on the dust collecting hood body 1, and the mesh flow equalizing plate 6 is installed at the air inlet 2. The air duct 3 is provided with an air suction port 4 and an air outlet 5. The air suction port 4 is communicated with the air inlet 2 inside the dust collecting hood body 1, and the air outlet 5 is outside the dust collecting hood body 1 and communicated with the fan. After the system is started, the fan rotates to generate negative pressure and suction air flow inside the air duct 3. The dusty air is sucked into the dust collecting hood body 1 from the mesh flow equalizing plate 6, and enters the purification equipment through the air suction port 4 and the air outlet 5 for filtration and purification. Through the setting of the mesh flow equalizing plate 6, the diameter of the air flow equipotential surface centered on the air suction port 4 is enlarged, that is, the suction range is enlarged. Coupled with the uniformly distributed air suction ports 4, the suction air flow is evenly distributed, reducing eddy currents and avoiding the accumulation and retention of soot in the working area.

[0041] In this embodiment, the dust collecting hood body 1 is composed of a skeleton 7 and a plate member 8, and each plate member 8 is connected to the frame-shaped skeleton 7 to form an enclosure structure; the air inlet 2 is opened on the plate member 8 at the corresponding position according to the installation environment and process requirements to improve the adaptability and flexibility of the device.

[0042] In this embodiment, the air duct 3 is a pipe structure with one end open. Its open end is the air outlet 5, and the air suction port 4 is opened on its side wall. The air outlet 5 is communicated with the fan. When the fan starts to work, negative pressure and suction air flow are generated inside the air duct 3, and the air suction port 4 is communicated with the air inlet 2 inside the dust collecting hood body 1, so that the dusty air can be sucked into the dust collecting hood through the air inlet 2.

[0043] Embodiment 1

[0044] As Figure 2-3 shown, the internal pipeline type dust collecting hood of this embodiment is an up-draft structure, and the air inlet 2 is at the bottom of the dust collecting hood body 1. Specifically, the air duct 3 is arranged at the central position inside the dust collecting hood body 1. Two air inlets 2 are opened on the bottom plate of the dust collecting hood body 1, and the air inlets 2 are respectively on both sides of the air duct 3. Mesh flow equalizing plates 6 are connected to both air inlets 2. Air suction ports 4 are respectively opened on the front and rear sides of the air duct 3 and communicated with the air inlets 2. When the system is started, the fan rotates to generate negative pressure and suction air flow inside the air duct 3. The dusty air is sucked into the dust collecting hood body 1 from the two mesh flow equalizing plates 6 at the bottom, and enters the purification equipment through the air suction port 4 and the air outlet 5 for filtration and purification.

[0045] Embodiment 2

[0046] The internal pipeline type dust collecting hood of this embodiment is a side-draft structure, and the air inlet 2 is on the side of the dust collecting hood body 1.

[0047] The air inlet 2 is opened on the front side plate of the dust collection hood body 1 and is vertically arranged to adapt to the dust collection in the front side direction. It is parallel to the air suction port 4 and can provide a stronger dust suction capacity for front-side dust collection.

[0048] Embodiment 3

[0049] The built-in pipe type dust collection hood of this embodiment is of a side suction structure, and the air inlet 2 is in the side direction of the dust collection hood body 1.

[0050] The air inlet 2 is opened between the front side plate and the bottom plate of the dust collection hood body 1 and is inclined to adapt to the dust collection in the front side and bottom directions, which can expand the effective dust suction range, is beneficial to capturing the dust entering from different angles, and improves the dust suction effect.

[0051] Embodiment 4

[0052] As Figure 4-5 shown, the built-in pipe type dust collection hood of this embodiment is of a side suction structure, and the air inlet 2 is in the side direction of the dust collection hood body 1.

[0053] The air inlet 2 is opened between the front side plate and the bottom plate of the dust collection hood body 1 and is arranged in a bent shape with an upper inclination and a lower vertical combination. Its overall dust suction surface is larger, which can provide a larger dust suction area, and the vertical surface can be parallel to the air suction port 4. Thus, while increasing the dust suction range, a stronger adsorption capacity is ensured.

[0054] Embodiment 5

[0055] As Figure 6-7 shown, the air suction port 4 of this embodiment is a uniformly arranged large dispersed hole, and a grille 9 is connected inside it. The air suction port 4 is opened on the front or rear side wall of the air duct 3; by setting the grille 9, the processing efficiency is improved, and later disassembly and maintenance are more convenient.

[0056] Embodiment 6

[0057] As Figure 8 shown, the air suction port 4 is a uniformly arranged dense small hole, and the air suction port 4 is opened on the front or rear side wall of the air duct 3 and is arranged in an array; the air suction port 4 of this structure is directly machined on the wall of the air duct 3, is not easily damaged, and has a long service life.

[0058] Working principle: After the system is started, the fan rotates to generate negative pressure and suction air flow inside the air duct 3. The dust-containing air is sucked into the dust collection hood body 1 from the mesh flow equalizing plate 6, and enters the purification equipment through the air suction port 4 and the air outlet 5 for filtration and purification. Through the setting of the mesh flow equalizing plate 6, the diameter of the air flow equipotential surface centered on the air suction port 4 is enlarged, that is, the suction range is enlarged. Coupled with the uniformly distributed air suction ports 4, the suction air flow is evenly distributed, reducing eddy currents and avoiding the accumulation and retention of dust in the working area.

[0059] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not intended to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0060] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A dust collecting hood with built-in duct, characterized in that: include: A dust hood body (1) having an air inlet (2); an air duct (3) having an air suction port (4) and an air outlet (5), wherein the air suction port (4) is connected to the air inlet (2) inside the dust hood body (1), and the air outlet (5) is outside the dust hood body (1) and connected to a fan; and a mesh flow equalizing plate (6) connected to the air inlet (2).

2. A dust collecting hood with built-in duct as claimed in claim 1, characterized in that: The dust collecting hood body (1) is an enclosure structure composed of a frame (7) and a plate member (8), and the air inlet (2) is arranged on the plate member (8).

3. The dust collecting hood with built-in duct as claimed in claim 1, characterized in that: The air inlet (2) is located at the bottom of the dust collecting hood body (1).

4. The dust collecting hood with built-in duct as claimed in claim 1, characterized in that: The air inlet (2) is located on the side of the dust collecting hood body (1).

5. A dust collecting hood with built-in duct as claimed in claim 4, characterized in that: The air inlet (2) is arranged vertically.

6. The dust collecting hood with built-in duct as claimed in claim 4, characterized in that: The air inlet (2) is arranged obliquely.

7. The dust collecting hood with built-in duct as claimed in claim 4, characterized in that: The air inlet (2) is a bent arrangement that is inclined upward and vertical downward.

8. The dust collecting hood with built-in duct as claimed in claim 1, characterized in that: The air duct (3) is a pipe structure with one end open, wherein the open end is the air outlet (5), and the air inlet (4) is provided on the side wall.

9. The dust collecting hood with built-in duct as claimed in claim 1, characterized in that: The air suction ports (4) are evenly arranged dispersed large holes, and a grille (9) is connected therein.

10. The dust collecting hood with built-in duct as claimed in claim 1, characterized in that: The air suction ports (4) are densely arranged small holes that are evenly spaced.

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