Circulating dust generating device

Abstract

The invention discloses a circulating dust generating device and relates to a calibrating experiment device in the field of dust testing. The circulating dust generating device comprises a cavity and an axial flow fan, the top and the bottom of the cavity are respectively provided with an opening, one end of the axial flow fan is fixed at the opening of the bottom of the cavity, and the other end of the axial flow fan is connected at the opening of the top of the cavity through a circulating pipe. Dust can be reused, dust environment inside the dust generating device is more stable, and internal conditions of the cavity can be observed at any time, and articles can be taken and placed quite conveniently. The invention further provides various dust testing methods, so that dust testing is more flexible.

Description

technical field

[0001] The invention relates to a calibration experiment device in the field of dust measurement, in particular to a circulating dust generating device. Background technique

[0002] In the field of dust research, the detection of dust concentration, particle size and other characteristics requires a stable dust environment. In actual research, a dust space in the laboratory is used to simulate the dust environment for testing, experiments and calibration of dust measuring instruments. . The existing methods all use an open dust generating device, that is, the dust is sent into the air tunnel through a quantitative dust feeding device, and finally the dust is discharged out of the wind tunnel. The experimental study of dust brought great inconvenience.

[0003] Therefore, those skilled in the art are devoting themselves to developing a circulating dust generation device capable of recycling dust and maintaining a stable dust environment for a long time. C...

Examples

Embodiment 1

[0018] Embodiment one: if Figure 1 to Figure 3 As shown, a circulating dust generating device includes a cavity 1, an axial flow fan 2, a circulation pipe 3, a mesh-like support 4, an annular rectifying plate 5, a sealing door 7 and a cavity support 10; the cavity 1 Both the top and the bottom have openings, the top of the cavity 1 protrudes upwards to form a conical top; the bottom of the cavity 1 protrudes downwards to form a conical bottom, and one end of the axial flow fan 2 is fixed in the cavity The opening at the bottom of the body 1, the other end of the axial flow fan 2 is connected to the opening at the top of the cavity 1 through a circulation pipe 3, the cavity 1 is provided with a sealing door 7, and the cavity 1 is horizontal A mesh-shaped support 4 is welded, and two annular rectifying plates 5 are also welded in the cavity 1, and the two annular rectifying plates 5 are welded on the conical bottom of the mesh-shaped support 4 and the cavity 1 In between, the ...

Embodiment 2

[0022] Embodiment two: if Figure 4 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is: the mesh-shaped support 4 abuts against the conical bottom of the cavity 1, and the mesh-shaped support 4 and the axial flow fan 2 Two annular rectifying plates 5 are arranged between them, and the two annular rectifying plates 5 are welded on the conical bottom of the cavity 1. Since the mesh-shaped support 4 is not fixed to the inside of the cavity 1, it can pass through the airtight door 7 Remove for cleaning or replacement.

technical field

[0001] The invention relates to a calibration experiment device in the field of dust measurement, in particular to a circulating dust generating device. Background technique

[0002] In the field of dust research, the detection of dust concentration, particle size and other characteristics requires a stable dust environment. In actual research, a dust space in the laboratory is used to simulate the dust environment for testing, experiments and calibration of dust measuring instruments. . The existing methods all use an open dust generating device, that is, the dust is sent into the air tunnel through a quantitative dust feeding device, and finally the dust is discharged out of the wind tunnel. The experimental study of dust brought great inconvenience.

[0003] Therefore, those skilled in the art are devoting themselves to developing a circulating dust generation device capable of recycling dust and maintaining a stable dust environment for a long time. C...

Examples

Embodiment 1

[0018] Embodiment one: if Figure 1 to Figure 3 As shown, a circulating dust generating device includes a cavity 1, an axial flow fan 2, a circulation pipe 3, a mesh-like support 4, an annular rectifying plate 5, a sealing door 7 and a cavity support 10; the cavity 1 Both the top and the bottom have openings, the top of the cavity 1 protrudes upwards to form a conical top; the bottom of the cavity 1 protrudes downwards to form a conical bottom, and one end of the axial flow fan 2 is fixed in the cavity The opening at the bottom of the body 1, the other end of the axial flow fan 2 is connected to the opening at the top of the cavity 1 through a circulation pipe 3, the cavity 1 is provided with a sealing door 7, and the cavity 1 is horizontal A mesh-shaped support 4 is welded, and two annular rectifying plates 5 are also welded in the cavity 1, and the two annular rectifying plates 5 are welded on the conical bottom of the mesh-shaped support 4 and the cavity 1 In between, the ...

Embodiment 2

[0022] Embodiment two: if Figure 4 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is: the mesh-shaped support 4 abuts against the conical bottom of the cavity 1, and the mesh-shaped support 4 and the axial flow fan 2 Two annular rectifying plates 5 are arranged between them, and the two annular rectifying plates 5 are welded on the conical bottom of the cavity 1. Since the mesh-shaped support 4 is not fixed to the inside of the cavity 1, it can pass through the airtight door 7 Remove for cleaning or replacement.

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