Dust removal device for bulk powder loading workshop

Abstract

The utility model discloses a dust removal device for a bulk powder loading workshop. The dust removal device is characterized by comprising an air curtain, an induced draft fan, a discharge pipe, a side suction hood, a bag-type dust remover, a top dust suction hood, an adjusting valve and a dust collection pipeline, the air curtain is placed under an upper door frame of the workshop access door, the side suction hoods are arranged on the two lower sides of the inner sides of the two frames of the workshop access door in pairs, the top dust suction hoods are arranged above the door frame of the workshop access door, and the adjusting valves are arranged on dust collection connecting pipelines of the side suction hoods, the top dust suction hoods and the bag-type dust collector. And the bag-type dust collector is arranged between two access doors outside the workshop and is connected with the induced draft fan through a pipeline. The dust collecting and removing device can effectively prevent dust in the processes of cargo loading, machine production, manual walking and the like from escaping outwards, greatly reduces the probability that the dust escapes outwards, improves the dust collecting and removing effects, ensures the environmental sanitation of a workshop, and reduces the occurrence rate of pneumoconiosis. And the device is flexible in pipeline layout, low in cost, high in dust removal efficiency and suitable for various dust-producing workshops and factory buildings.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection and dust removal technology, and in particular to a dust prevention design scheme that combines an air curtain machine to prevent dust overflow, a dust suction hood for close-range and timely dust collection, and a dust collector for dust removal caused by a forklift loading bulk powder onto a truck in a powder loading workshop and the truck entering and leaving the powder operation workshop. Background Technology

[0002] Various material factories, cement plants, flour mills, coal preparation plants, etc., often experience dust spillage or escape during operation in unsealed processes with elevation differences (such as transportation, transshipment, and production). This dust not only adversely affects the health of workers within the workshops but also generates PM2.5 particles, polluting the external environment. Therefore, dust pollution must be addressed. In particular, the loading of bulk powder materials by forklifts onto trucks in bulk powder loading workshops results in high dust concentrations in the working environment. The entry and exit of trucks into and out of the powder handling workshops further generates significant dust, which then spills out as the trucks leave the workshop. This presents two pollution mechanisms: high dust concentrations polluting workers in the working environment and high-concentration dust spillage polluting the external environment. Due to the high dust levels, relatively enclosed environment, and manual labor required in factory workshops, effective control of dust escape at the workshop entrances and exits is difficult. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the prior art by proposing a dust removal device for bulk powder loading workshops. This device utilizes an air curtain to prevent dust overflow and a dust suction hood for close-range, timely dust collection.

[0004] This utility model is achieved through the following technical solution.

[0005] The dust removal device for a bulk powder loading workshop described in this utility model includes an air curtain, an induced draft fan, an exhaust pipe, a side suction hood, a bag filter, an overhead dust suction hood, regulating valves, and a dust collection pipe.

[0006] The air curtain is placed directly below the door frame of the workshop entrance, and the horizontal dimension of the air curtain is approximately equal to the width of the workshop entrance.

[0007] The side suction hoods are installed in pairs on the lower sides of the inner side of the two frames of the workshop entrance and exit. The side suction hoods have dust collection pipes connected to the bag dust collectors above them. The suction power generated by the bag dust collectors is used to collect dust caused by cars entering and exiting the inner side of the entrance and dust particles blown off by the air curtain machine through the dust collection pipes. An adjustment valve is installed on the dust collection pipes connecting each pair of side suction hoods to the bag dust collectors, so that the suction power and dust collection direction of the side suction hoods in different areas can be adjusted according to the actual situation.

[0008] The aforementioned top-mounted dust collection hood is installed above the door frame of the workshop entrance and is connected to the bag filter through a dust collection pipe. Considering that the dust concentration and distribution are different in different areas of the workshop, in order to meet the dust reduction and collection requirements of each area, an adjustment valve is installed on the dust collection pipe of each top-mounted dust collection hood and the bag filter. The suction power and dust collection direction of the top-mounted dust collection hood in different areas can be adjusted according to the actual situation.

[0009] The bag filter dust collector is installed between the two entrances outside the workshop. Its exhaust duct is set higher than the eaves of the workshop. The bag filter dust collector is connected to the induced draft fan through the duct. The discharge port of the hopper below the bag filter dust collector is designed with a weighted flap for automatic discharge. The powder falls into the dust collection tank inside the workshop through the wall-penetrating inclined chute.

[0010] The solution described in this utility model can be modified according to the structure of different workshops, and the positions of the bag filter and dust discharge outlet can be adjusted on site.

[0011] The air curtain described in this utility model can be customized according to the size of different factory workshops. If the entrance and exit of a factory is wide, multiple air curtain machines can be installed to cover the entrance and exit.

[0012] The advantages of this utility model.

[0013] 1) This utility model is used to control dust escape. The air curtain combined with the bag dust collector is used for dust prevention design in powder operation workshop. The air curtain uses strong wind to block dust from escaping from the workshop and blows it to the ground. The equipment will not affect the normal operation of the factory workshop, cargo transportation and worker operation. Its power is controllable and can effectively control the dust escape of different degrees.

[0014] 2) The air curtain combined with bag dust collector design provided by this utility model can effectively prevent dust from escaping during the loading of goods, machine production, and manual walking, greatly reducing the probability of dust escaping, greatly improving the dust collection and removal effect, ensuring the environmental hygiene of the workshop, and reducing the incidence of pneumoconiosis.

[0015] 3) The pipeline layout provided by this utility model is flexible, has low investment cost, high dust removal efficiency, and high safety and practicality, and is suitable for various dust-generating workshops and factories. Attached Figure Description

[0016] Figure 1 This utility model relates to the design drawing of a dust collector for a loading and unloading workshop.

[0017] Among them, 1 is an air curtain, 2 is an exhaust fan, 3 is an exhaust pipe, 4 is a side suction hood, 5 is a bag filter, 6 is a top suction hood, 7 is a regulating valve, and 8 is a dust collection pipe. Detailed Implementation

[0018] This utility model will be further described in conjunction with the accompanying drawings and through the following embodiments.

[0019] The dust removal system for a bulk powder loading workshop described in this embodiment includes an air curtain 1, an induced draft fan 2, an exhaust pipe 3, a side suction hood 4, a bag filter 5, an overhead dust suction hood 6, a regulating valve 7, and a dust collection pipe 8.

[0020] Two air curtains 1 are placed directly below the upper door frame of the entrance to the factory's powder processing workshop. The horizontal dimension of the air curtain 1 is approximately equal to the width of the workshop entrance, about 4 meters. The air volume of a single air curtain is 10,000 m³ / h, and the power and air volume are adjusted by a frequency converter.

[0021] The side suction hoods 4 are installed in pairs on the lower sides of the inner side of the two frames of the workshop entrance and exit. The side suction hoods 4 are floor-standing and 0.8 meters high. To improve dust collection efficiency, they are designed as semi-cylindrical (0.4 meters in diameter). There is a dust collection pipe 8 above the side suction hoods 4 that is connected to the bag dust collector 5. Using the suction force generated by the bag dust collector 5, the dust particles caused by cars entering and exiting the door and blown off by the air curtain machine are collected through the dust collection pipe 8 connected to the side suction hoods 4. An adjustment valve 7 is installed on the dust collection pipe 8 connecting each pair of side suction hoods 4 and the bag dust collector 5 to adjust the suction force and dust collection direction of the side suction hoods 4 in different areas according to the actual situation.

[0022] The overhead dust collection hood 6 is installed above the door frame of the workshop entrance (3-4m horizontally from the doorway and 1m above the ground). The overhead dust collection hood 6 is trumpet-shaped or diamond-shaped with a side length of 0.8 meters. It is connected to the bag filter 5 via a dust collection pipe 8 to collect airborne dust (particulate matter) in the workshop. Considering the varying dust concentrations and distributions within the workshop, an adjusting valve 7 is installed on the dust collection pipe of each overhead dust collection hood 6 and the bag filter 5 to adjust the suction power and suction direction of the overhead dust collection hood 6 in different areas according to actual conditions.

[0023] The bag filter dust collector 5 (WQ64-5, S=582m) is described. 2 The exhaust duct 3 (V≦1.2m / min) is installed between the two entrances outside the workshop. Its exhaust duct 3 is set 1m above the workshop eaves, and its discharge outlet is more than 8m above the ground. The bag filter 5 is connected to the induced draft fan 2 (4-73No.10D, Q=33000m) via a duct. 3( / h, P=4000Pa, N=55 Kw) connection, the discharge port of the hopper below the bag dust collector 5 is designed as an automatic discharge by a heavy hammer flap, and the discharge port is designed as a 120-degree inclined chute 35cm away from the flap. The powder falls into the dust collection pool in the workshop through the wall inclined chute.

[0024] The pipes connecting the various dust collection hoods, the bag filter, and the induced draft fan are all DN600mm in diameter.

[0025] The operating mode of this utility model device is as follows.

[0026] The loading of bulk powder onto trucks by forklifts in the powder loading workshop results in high dust concentrations in the working environment. The entry and exit of trucks into and out of the powder handling workshop also generates a large amount of dust, which spills out as the trucks leave the workshop. An air curtain 1 installed directly below the door frame of the workshop entrance uses strong winds to block dust from escaping from the workshop and blows it to the ground. Floor-mounted suction hoods 4 installed on both sides of the lower inner side of the door frame have dust collection pipes 8 above their semi-cylinders, which are connected to a bag filter 5 and an induced draft fan 2. The suction generated by the induced draft fan 2 is used to collect dust generated by vehicles entering and exiting the door and dust particles blown off by the air curtain 1 in a timely manner through the dust collection pipes 8. Inside the workshop, at a horizontal distance of 3-4m from the door and a height of 1m above the door frame, a dust collection hood 6 collects dust (spray dust) in the working environment.

[0027] It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the scope of protection of this utility model.

[0028] The above embodiments merely illustrate specific implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of protection of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model patent should be determined by the appended claims.

Claims

1. A dust removal device for a bulk powder loading workshop, characterized in that: Includes air curtain, exhaust fan, exhaust pipe, side suction hood, bag filter, top suction hood, regulating valve, and dust collection pipe; The air curtain is placed directly below the door frame of the workshop entrance, and the horizontal dimension of the air curtain is equal to the width of the workshop entrance. The side suction hoods are installed in pairs on the lower sides of the inner side of the two frames of the workshop entrance and exit. There are dust collection pipes above the side suction hoods that are connected to the bag dust collector, and an adjustment valve is installed on the dust collection pipes that connect each pair of side suction hoods to the bag dust collector. The aforementioned top dust collection hood is installed above the door frame of the workshop entrance and is connected to the bag filter through a dust collection pipe. Each top dust collection hood is equipped with an adjustment valve on the dust collection pipe of the bag filter. The bag filter dust collector is installed between the two entrances outside the workshop. Its exhaust duct is set higher than the eaves of the workshop. The bag filter dust collector is connected to the induced draft fan through the duct. The discharge port of the hopper below the bag filter dust collector is designed with a weighted flap for automatic discharge. The powder falls into the dust collection tank inside the workshop through the wall-penetrating inclined chute.

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