Metal spiral filter screen

Abstract

A metal spiral filter screen comprises a stainless steel filter screen body, and drainage guide grooves are evenly distributed in the stainless steel filter screen body. A stainless steel filter screen body n is arranged behind the stainless steel filter screen body, a filter screen gap is formed between the stainless steel filter screen body n and the stainless steel filter screen body n, and a filter screen cavity is formed in the center. Sewage needing to be filtered is pressed in the filter screen cavity and is filtered out through the filter screen gaps. The gap of the filter screen can be adjusted through the stainless steel filter screen body and the stainless steel filter screen body n. And water filtered out from gaps of the filter screen smoothly flows out through the distributed drainage guide grooves, so that the water filtering efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of dehydration treatment technology, specifically relating to a metal spiral filter screen. Background Technology

[0002] Sludge contains a large amount of water, and direct transportation will cause spillage, making long-distance transport impossible. Reduction treatment followed by secondary processing is more cost-effective and environmentally friendly. Only after sludge is dewatered and the mud and water are separated can the sludge cake and residue be easily transported and processed, and the water can be recycled and reused, saving water resources. Sludge contains a large amount of organic matter, various pathogens, and other harmful substances. If it is not stabilized, it will inevitably become a "secondary source of pollution," leading to environmental pollution and the spread of germs.

[0003] Traditional sludge dewatering machines are mostly plate and frame, stack, crawler, or negative pressure types, and their dewatering process has many problems:

[0004] 1. Due to the limitations of the filter, only a portion of the free water can be removed.

[0005] 2. The filter screen is mostly made of synthetic fibers, which has a very short service life. Summary of the Invention

[0006] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a metal spiral filter screen, replacing the filter screen material from synthetic fibers with metal to improve strength and wear resistance, and extend service life. Simultaneously, by processing hydrophobic guide grooves on the metal surface according to a specific process, the water filtration efficiency is improved. A micro-particle spring filter screen is also used. By adjusting the gaps between the metal filter screens through the process, different chemical components can be added for filtration.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A metal spiral filter screen includes a stainless steel filter screen body (1), characterized in that the stainless steel filter screen body (1) has uniformly distributed hydrophobic guide grooves (2); the stainless steel filter screen body (1) is followed by a stainless steel filter screen body n (4), and there is a filter screen gap (3) between the two; the stainless steel filter screen body (1) and the stainless steel filter screen body (4) form a filter screen cavity (5) at the rear center; the stainless steel filter screen body (1) and the stainless steel filter screen body n (4) form a continuous spiral structure.

[0009] The filter screen (4) is a micro-pitch spring filter screen.

[0010] The gaps in the micro-pitch spring filter can be filled with chemical components for filtration.

[0011] The filter screen (4) is made of metal.

[0012] The filter screen gap (3) is adjustable in the range of 0 to 0.05 mm.

[0013] The number of stainless steel filter bodies n (4) is determined according to the power of the equipment.

[0014] The beneficial effects of the utility model are:

[0015] It can withstand near-field pressure.

[0016] The gap can be adjusted at will.

[0017] Longer lifespan.

[0018] It has a higher dehydration rate.

[0019] After the filter screen is made, it should be flat, smooth and free of burrs. When filtering sludge, the water output should be uniform. It can filter sludge with very small molecular particle size without adding chemical agents.

[0020] The lifespan of the filter is 5 to 10 times that of the best filter currently available in China;

[0021] The filter should be easy to install and replace.

[0022] The filter screen should be easy to clean to prevent clogging. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Among them, 1 is the stainless steel filter screen body; 2 is the hydrophobic guide groove; 3 is the filter screen gap; 4 is the stainless steel filter screen body; and 5 is the filter screen cavity. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and working principle.

[0026] As shown in 1, a metal spiral filter screen includes a stainless steel filter screen body (1), characterized in that hydrophobic guide grooves (2) are evenly distributed on the stainless steel filter screen body (1); a stainless steel filter screen body n (4) is behind the stainless steel filter screen body (1), and a filter screen gap (3) is between the two; the stainless steel filter screen body (1) and the stainless steel filter screen body (4) form a filter screen cavity (5) at the rear center.

[0027] The filter screen (4) is a micro-pitch spring filter screen.

[0028] The gaps in the micro-pitch spring filter can be filled with chemical components for filtration.

[0029] The filter screen (4) is made of metal.

[0030] The filter screen (4) is installed in the filter screen fixing device. By adjusting the adjustment devices at both ends of the filter screen device, the pitch gap of the filter screen increases under the action of metal elasticity. Through calculation and referring to the mesh size of existing dewatering machine filter screens, and through water pressure test, the required mesh size of the filter screen for water molecules to pass through is determined. This is then compared with the actual mesh size required for sludge dewatering, and finally the required filtration gap value for sludge dewatering is determined. Through testing, the filter screen gap is found to be between 0 and 0.003 mm.

[0031] The working principle of this utility model is as follows:

[0032] The wastewater requiring filtration is pressurized within the filter chamber and filtered out through the filter mesh 3. The mesh spacing is adjustable via the stainless steel filter body 1 and stainless steel filter body n4. This allows the water filtered through the filter mesh 3 to flow smoothly out through the distributed drainage channel 2.

Claims

1. A metal spiral filter screen, comprising a stainless steel filter screen body (1), characterized in that, The stainless steel filter body (1) has evenly distributed drainage channels (2); behind the stainless steel filter body (1) is the stainless steel filter body n (4), and between the two is the filter gap (3). The stainless steel filter body (1) and the stainless steel filter body n (4) form a filter cavity (5) at the rear center; the stainless steel filter body (1) and the stainless steel filter body n (4) form a continuous spiral structure.

2. The metal spiral filter screen according to claim 1, characterized in that, The stainless steel filter body n (4) is a micro-pitch spring filter.

3. A metal spiral filter screen according to claim 2, characterized in that, The gaps in the micro-pitch spring filter can be filled with chemical components for filtration.

4. A metal spiral filter screen according to claim 1, characterized in that, The stainless steel filter body n (4) is made of metal.

5. A metal spiral filter screen according to claim 1, characterized in that, The filter screen gap (3) is adjustable in the range of 0 to 0.05 mm.

6. A metal spiral filter screen according to claim 1, characterized in that, The number of stainless steel filter bodies n (4) is determined according to the power of the equipment.

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