1. Product Overview

SFU017 The dual-level series multi-cylinder dust removal unit is manufactured by Shanghai Airking Air Equipment Co., Ltd in SFU017 An efficient, environmentally friendly, and energy-saving dust removal unit meticulously developed on the basis of a multi-cylinder dust removal system.

SFU017 The first stage of the multi-cylinder dust removal unit in this series is a disc pre-filter, and the second stage is a multi-cylinder filter. The arrangement of filter media, mechanical transmission, and dust collection method are all based on Swiss standards. LUWA The dust removal principle is based on a multi-drum design and tailored to China’s specific national conditions. The equipment features multi-layer, fixed, concentric cylindrical filter baskets with filter media arranged on either the inner side or both sides. The reciprocating motion of the multi-tube suction nozzles utilizes mature domestic technology. A simple and practical reciprocating transmission mechanism converts rotary motion into a combined motion involving both rotation and axial reciprocation, thereby meeting the operational requirements of the dust-collection nozzles. This design eliminates the need for complex transmission mechanisms and control circuits, ensuring high reliability and low failure rates. The equipment’s secondary filtration system adopts a multi-tube design, offering advantages such as large filtration area, low unit energy consumption, and straightforward operation. In terms of electrical components, optional configurations are available. PLC Control is implemented with a high degree of automation. According to user requirements, it can be equipped with a differential pressure control switch to detect filter resistance and trigger fault alarms.

2. Product Use

2.1 SFU017 The series of multi-cylinder dust removal units can be widely used in air-conditioning and dust filtration systems in light-industry enterprises such as cotton spinning, synthetic fiber, hemp spinning, papermaking, and tobacco processing. These units filter and collect fibers and particulate contaminants from the airflow passing through them, thereby purifying the air for reuse or discharge.

2.2 The first stage of this unit consists of two disc pre-filters and a fiber compactor, which can be used for return-air filtration. They filter and separately collect fibers and coarser dust particles from the airflow, then compact them separately. The second stage comprises a multi-cylinder dust collector and a dust compactor, which filter and collect dust and short fibers from the airflow and then compact them.

3. Product model marking

3.1 SFU017 The series of multi-cylinder dust removal units is divided into primary dust removal units and secondary dust removal units.

3.2 Model marking method:

SFU017 – 1S – □ – Z – ( □ )

 

 

 

Installation method: When standing at the air intake end of the unit, the dust is tightly compressed.

The instrument on the left is left. (L) Formula, on the right is (R) Formula

    Modular

Number of filter cartridges (indicating the number of secondary multi-cartridge stages)

Double First-Class

Product Model: Multi-Cylinder Dust Removal

 

 

4. Product structure and operating principle

4.1 Dust Removal Unit External Dimension Drawing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.1.1 Dimensions of the dust removal unit (Table 1)                                

Model number Specifications	SFU017-1S-4 (Double-sided suction)
W (mm)	2520
H(mm)	2583
H3(mm)	687

4.1.2 SFF232-12 External Dimensions for Single-Suction Centrifugal Fans (Table 2)

Single-suction centrifugal fan specifications	Center distance And E	Foot spacing A+A	Foot spacing B	Fan outer width F2	Axis spacing C	Fan center H 1
SFF232-12No7.1E	800	1060+1060	810	510	235	805
SFF232-12No8E	830	1170+1170	870	570	232	950
SFF232-12No9E	861	1305 + 1305	824	625	254	1040
SFF232-12No10E	885	1415+1415	890	690	247	1150
SFF232-12No11.2E	925	1540+1540	964	765	239	1270
SFF232-12No12.5E	964	1800+1800	1090	850	350.5	1380

4.2 Schematic diagram of the dust removal unit structure

 

 

 

 

 

                   

 

 

 

 

 

 

 

I . Disc prefilter 1. Disc filter 2. Rotating nozzle 3. Dust exhaust fan 4. Fiber separator

II . Multi-tube filter 1. Brush     cage 2. Dust collection fan 3. Dust compactor 4. Multi-tube filter tank 5. Secondary nozzle 6. Rotating suction arm

III . Rear box

4.3 The working principle of the dust removal unit.     

4.3.1 SFU017 The dust removal unit series is a mechatronic dust removal system consisting of two primary disc pre-filters and a secondary multi-cylinder filter. The first-stage disc pre-filter primarily filters, separates, and collects fibers and impurities from the air being processed; the second-stage multi-cylinder filter primarily filters, separates, and collects fine fibers and dust particles remaining after the first-stage filtration.

4.3.2 The first-stage disc pre-filter consists of two disc filters, a rotating nozzle, a primary housing, a fiber compactor, and a dust-extraction fan. As fibrous dust-laden air passes through the disc filters, fibers and impurities are trapped on the filter discs. The rotating nozzle, driven by the suction force of the dust-extraction fan, removes the fibers and impurities, which are then separated and compacted for discharge by the fiber compactor. The dust-laden air that has been separated is returned to the primary housing.

4.3.3 The second-stage multi-tube filter consists of a frame, a multi-tube filter housing, a rotating suction arm equipped with multi-tube nozzles, a secondary casing, a dust-collection fan, a bag-filter vibration dust collector, and a dust-compaction device. The inner side of the multi-layer filter housing is lined with flame-retardant, long-pile filter material. As dust-laden air passes through the filter material, dust particles are trapped on the surface of the filter medium, while the cleaned air flows out through the filter material. Utilizing the suction action of the dust-collection fan, the nozzle rotates and reciprocates along the surface of the filter medium, continuously removing the dust particles trapped on the filter surface and conveying them to the bag-filter vibration dust collector for dust-air separation. The latter employs a novel mechanical vibration device that periodically shakes off the accumulated dust; the dust is then compacted and discharged by the dust-compaction device. The separated, dust-laden air subsequently passes through the dust-collection bag and returns to the secondary casing.

 

 

 

 

 

 

 

 

 

5.   Product specifications and performance parameters

5.1 Specification Dimensions (Table 3)

Type   Number   rule   Grid			SFU017-1S-4 (Double-sided suction)
The first One Level (I)	Disc Filter screen	plate   path (mm)	1600
		Filtration area (m 2)	3.838 ( 1.919 + 1.919 )
		Filter screen ( eye / Inch )	60-80-120 (Stainless steel wire mesh)
	Box dimensions	Length (mm)	1010 1010
		Width B(mm)	3440 ( 1720+1720 )
		Height H(mm)	2583
	Installed capacity (kW)		6.24 ( 3.12 + 3.12 )
The first Two Level (II)	Multi-tube filter tank	Maximum diameter ( mm )	2306
		Filtration area (m 2)	34.2
		Filter   material	JM 2 or JM 5 (Flame-retardant plush)
	Box dimensions	Length (mm)	2134
		Width B(mm)	2520
		Height H(mm)	2583
	Installed capacity (kW)		5.09
		Length L(mm)	3744 + 593.5 (Auxiliary machine)
		Width B(mm)	2520 + 500 (Auxiliary machine)
		Height H2(mm)	2583 + 845 (Fan)
	Total installed capacity (kW)		11.33

5.2 Technical Performance Parameters (Table 4)

Type   Number rule   Grid	Handling air volume x104 m 3/h						Filtering Resistance (Pa)	Dust removal Efficiency (%)
	Dust removal system					Return air Filter
	Waste cotton	Coarse yarn	Medium-weight yarn	Fine yarn	Synthetic fiber yarn
SFU017-1S-4	2.0–3.0	2.4–3.5	2.8–4.2	3.2–4.8	3.6–5.4	4.0–6.0	≤ 250	≥ 99

The parameters in the table represent the air handling capacities required for dust removal systems used in various production processes and textile types in cotton spinning. They are provided for reference only and should not be applied to other situations without further verification.

5.3 Filter Media Configuration (Table 5)

6. Product Features

6.1 This unit features a large air handling capacity and high dust removal efficiency. The first-stage disc pre-filter consists of two discs of equal diameter arranged side by side without interfering with each other, enabling separate filtration for two different types of materials. Two fiber separators are used to individually compress and collect fibers, thereby reducing the floor space required and saving energy.

6.2 Each functional section is assembled from a metal frame, resulting in a compact, neat, and aesthetically pleasing design. In the absence of a cleanroom, it can be directly installed and used in the workshop.

6.3 This unit is easy to install and features a well-designed layout. It integrates all functional sections into a single unit, eliminating the need for users to fabricate vacuum ducts between individual components during installation, thereby saving both installation time and investment costs.

6.4 Regarding the reciprocating motion of the multi-tube nozzle, we adopt a mature domestic technology—the conventional method of using a reciprocating screw that moves left and right to drive the nozzle in a reciprocating motion.

6.5 The multi-tube filter tank features an assembly structure composed of multiple filter frames, making installation convenient and allowing users to quickly and easily clean or replace the filter media.

6.6 The filter screen is not easily deformed under wind pressure. Thanks to the support provided by the filter material, the screen does not bulge even when subjected to wind pressure, ensuring that the dust-collecting nozzle remains tightly attached to the filter material. As a result, dust collection is reliable and highly effective.

6.7 The disc pre-filter uses high-quality stainless steel mesh, resulting in even better flame-retardant and fire-resistant performance.

7. Application form

7.1 The unit typically uses negative-pressure filtration, but positive-pressure filtration is also feasible.

7.2 The unit is operating under positive pressure. ( Unmanned fan ) At this time, it is necessary to ensure that the residual pressure from the system’s exhaust air entering the dust removal unit can overcome the resistance of the dust removal unit itself.

7.3 The air intake method for the unit can either involve overhead ducts directly entering the first-stage housing through openings at the top or sides, or it can utilize underground air trenches or ducts that lead directly into the bottom of the first-stage housing. The size and location of the air inlets are determined by the user. As for the selection of the air intake velocity, generally, upward air intake is preferred. 8-10m/s For suitability, the air intake should be from below. 12-14m/s It is advisable.