Dust falling device for sand blasting shed

Abstract

The utility model relates to a dust falling device for a sand blasting shed, the device comprises a shed body, a cyclone separator, an electrostatic dust collector, a centrifugal machine and an air guide disc, the cyclone separator and the electrostatic dust collector are matched for use to form a multi-stage dust separation system, large-particle dust is removed through the cyclone separator, fine dust is removed through the electrostatic dust collector, and the centrifugal machine and the air guide disc are matched for use. The centrifugal machine enhances airflow circulation and further improves dust removal efficiency. The shed body is provided with a plurality of vertical air inlet pipes and an air guide disc, the upper portion of the air guide disc is provided with an inclined face, airflow rotates to flow obliquely downwards according to the Bernoulli principle when passing through the air guide disc, dust is prevented from being accumulated below, and a working area is kept clean and tidy.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dust falling device for sand blasting shed. BACKGROUND

[0002] Sand blasting operation is one of the common surface treatment processes in industry, and is widely used in surface cleaning and finishing of metal, glass, ceramic and other materials. In the sand blasting process, the sand blasting material collides violently with the surface of the workpiece, generating a large amount of fine dust. These dusts not only pollute the working environment, but also may pose a threat to the health of the operators.

[0003] At present, the traditional dust falling device of sand blasting shed mainly relies on simple ventilation and filtering device to collect dust. Although it can reduce environmental pollution to a certain extent, its dust falling effect is limited, especially for the poor capture effect of fine dust, and it is easy to cause dust backflow to the working area, affecting the cleanliness of the working environment.

[0004] Therefore, how to design a dust falling device for sand blasting shed that is less affected by dust backflow is a problem to be solved. SUMMARY

[0005] The utility model discloses a dust falling device for sand blasting shed, which forms air flow circulation through a cyclone separator, an electrostatic precipitator and a centrifugal machine, and then blows dust away from the area below the flow guide disc through an air inlet pipe and a flow guide disc, thereby increasing the cleaning effect. The utility model achieves the above-mentioned purpose.

[0006] The utility model relates to a dust falling device for sand blasting shed, which comprises a shed body, a cyclone separator fixedly installed on the left side of the outer part of the shed body, an electrostatic precipitator communicatively installed on the upper side of the cyclone separator, a dust outlet communicatively installed on the left side of the cyclone separator, a collection bag installed at the end of the dust outlet, a centrifugal machine communicatively installed on the left side of the inner part of the shed body, the centrifugal machine being in communication with the cyclone separator, a second centrifugal machine provided on the upper side of the electrostatic precipitator, an air inlet pipe communicatively installed on the upper part of the shed body, the air inlet pipe being in communication with a connecting pipe, four air inlet pipes being installed, the air inlet pipes being vertically arranged, a flow guide disc correspondingly installed on the lower part of the air inlet pipe, the upper side of the flow guide disc having a curved surface, and the angle of the curved surface being 10-30 degrees.

[0007] Furthermore, the shed body is in communication with the first centrifugal machine through a pipeline.

[0008] Furthermore, the first centrifugal machine is connected with the cyclone separator through a first connecting pipe.

[0009] Furthermore, the second centrifugal machine is in communication with the air inlet pipe through a second connecting pipe. Furthermore, the second centrifugal machine is in communication with the air inlet pipe through a second connecting pipe.

[0010] Further, the material of the deflector disc is plastic.

[0011] Further, the upper surface of the deflector disc is coated with a smooth coating.

[0012] Further, the end of the dust outlet is detachably mounted with a collection bag.

[0013] Further, the material of the collection bag is nylon.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the air flow circulation is formed by the cyclone separator, the electrostatic precipitator and the centrifuge, the filtering effect of the dust is strengthened, and multiple air inlet pipes and a deflector disc are arranged, the upper portion of the deflector disc is provided with an inclined surface, due to Bernoulli's principle, the gas will not gather below but flow to the inclined lower portion, the working area below is more tidy, the power of the centrifuge is not wasted, the internal ventilation is ensured, and a better working environment is provided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a side view of a dust falling device for a sand blasting shed;

[0016] In the figure: 1, second connecting pipe, 2, second centrifuge, 3, electrostatic precipitator, 4, pipeline, 5, dust outlet, 6, first connecting pipe, 7, collection bag, 8, cyclone separator, 9, first centrifuge, 10, air inlet pipe, 11, deflector disc, 12, shed body. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the utility model, the utility model will be further described in combination with examples and drawings below, and the examples are only used to explain the utility model and do not constitute the limitation on the protection scope of the utility model.

[0018] Please refer to Figure 1 The embodiment of the utility model is a dust falling device for a sand blasting shed, comprising a shed body 12, a cyclone separator 8 is fixedly installed on the outer left side of the shed body 12, an electrostatic precipitator 3 is communicatively installed on the upper side of the cyclone separator 8, a dust outlet 5 is communicatively installed on the left side of the cyclone separator 8, a collection bag 7 is installed at the end of the dust outlet 5, a centrifuge is communicatively installed on the inner left side of the shed body 12, the centrifuge is communicated with the cyclone separator 8, a second centrifuge 2 is arranged on the upper side of the electrostatic precipitator 3, air inlet pipes 10 are communicatively installed on the upper portion of the shed body 12, the air inlet pipes 10 are communicated with connecting pipes, four air inlet pipes 10 are installed, the air inlet pipes 10 are vertically arranged, a deflector disc 11 is correspondingly installed on the lower portion of the air inlet pipe 10, the upper side of the deflector disc 11 has a cambered surface, and the angle of the cambered surface is 10-30 degrees.

[0019] Specifically, the shed body 12 is built by square tubes, columns and color steel plates, the shed body 12 is provided with the cyclone separator 8 and the electrostatic precipitator 3, a gate is arranged at the right part of the shed body 12, the gate is closed during operation, the power of the cyclone separator 8 is 2.5kw, the gas flow treated is 1500-6000m 3 / h, the power of the electrostatic precipitator 3 is 3kw, the gas flow treated is 4000-12000m 3 / h, both are fixed on the shed body 12 through bolts; the collecting bag 7 is made of flexible material such as nylon, the part of the air inlet pipe 10 inserted into the shed body 12 is circular, the air inlet pipe 10 is arranged equidistantly from left to right and forms an angle of 90 degrees with the horizontal ground, the lower side of the air inlet pipe 10 corresponds to the air guide disc, during the dust removal operation, the gas is drawn away from the first centrifugal machine 9 at the left side, passes through the cyclone separator 8, the cyclone separator 8 separates the large particle dust through the rotating airflow principle, then sends the large particle dust to the dust outlet 5, the electrostatic precipitator 3 is installed above the cyclone separator 8 and is mainly used for removing fine dust, especially dust particles below 0.3 microns, then passes through the second centrifugal machine 2, the gas returns to the shed body 12 from the air inlet pipe 10, the gas contacts with the air guide disc downward, the upper part of the air guide disc is provided with a 30-degree slope, due to the Bernoulli principle, the gas will not gather below but flow to the oblique lower side, so that the working area below is more tidy, the power of the centrifugal machine is not wasted, the internal ventilation is ensured and a better working environment is provided.

[0020] In an embodiment, the shed body 12 is communicated with the first centrifugal machine 9 through the pipeline 4; the first centrifugal machine 9 is connected with the cyclone separator 8 through the first connecting pipe 6; the second centrifugal machine 2 is communicated with the air inlet pipe 10 through the second connecting pipe 1; the material of the air guide disc 11 is plastic; the upper surface of the air guide disc 11 is coated with a smooth coating to further strengthen the gas distribution effect; the collecting bag 7 is detachably installed at the end of the dust outlet 5; the material of the collecting bag 7 is nylon.

[0021] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, which should be covered in the claim scope of the utility model.

Claims

1. A dust suppression device for a sandblasting shed, characterized in that, The device includes a shed body. A cyclone separator is fixedly installed on the outer left side of the shed body. An electrostatic precipitator is connected to the upper side of the cyclone separator. A dust outlet is connected to the left side of the cyclone separator. A collection bag is installed at the end of the dust outlet. A centrifuge is connected to the inner left side of the shed body. The centrifuge is connected to the cyclone separator. A second centrifuge is provided above the electrostatic precipitator. An air inlet pipe is connected to the upper part of the shed body. The air inlet pipe is connected to a connecting pipe. Four air inlet pipes are installed. The air inlet pipes are arranged vertically. A guide plate is installed at the lower part of the air inlet pipe. The upper side of the guide plate has an arc surface with an angle of 10-30 degrees.

2. The dust suppression device for a sandblasting shed according to claim 1, characterized in that, The shed is connected to the first centrifuge via a pipe.

3. A dust suppression device for a sandblasting shed according to claim 2, characterized in that, The first centrifuge is connected to the cyclone separator via a first connecting pipe.

4. A dust suppression device for a sandblasting shed according to claim 1, characterized in that, The second centrifuge is connected to the air inlet pipe via a second connecting pipe.

5. A dust suppression device for a sandblasting shed according to claim 1, characterized in that, The guide plate is made of plastic.

6. A dust suppression device for a sandblasting shed according to claim 5, characterized in that, The upper surface of the flow guide plate is coated with a smooth coating.

7. A dust suppression device for a sandblasting shed according to claim 1, characterized in that, A collection bag is detachably installed at the end of the dust outlet.

8. A dust suppression device for a sandblasting shed according to claim 7, characterized in that, The collection bag is made of nylon.

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