Multi-medium filter-pressing dehydration device

Abstract

A multi-medium filter-pressing dehydration device comprises an equipment frame and is characterized in that one end in the equipment frame is connected with a hydraulic device, and the other end of the equipment frame is connected with a component; a filter screen is connected between the hydraulic devices; a desliming structure is arranged between the filter screen and the hydraulic device; a feeding hole is formed between the filter screen and the hydraulic device; a water collecting tank is arranged below the filter screen; the front end of the filter screen is provided with a collecting port, to-be-dewatered sludge enters the filter screen cavity, the hydraulic device moves to pressurize for dewatering after the filter screen cavity is full, water is removed from the filter screen in the pressurizing process, and the removed water in the dewatering process is naturally and continuously discharged out of the filter screen and enters the water collecting tank. The dewatered sludge forms a mud cake. The hydraulic device retreats from movement, the desliming structure is opened, and the mud cake enters the collecting opening and is conveyed away by the conveying belt. Sludge with the moisture content being 98% is fed into sludge dewatering equipment through an actual operation test, the sludge is dewatered until the moisture content is 40%-50%, and the dewatering working condition is met.

Description

Technical Field

[0001] The invention belongs to the technical field of dehydration treatment, and in particular relates to a multi-media filter press dehydration device. Background Art

[0002] Sludge contains a lot of water, so direct transportation will cause overflow and cannot be transported over long distances. Reduction treatment followed by secondary treatment is more cost-effective and environmentally friendly. Only after sludge is dehydrated, mud and water are separated, and mud cake and sludge residue can be easily transported and processed, and water can be recycled and reused to save water resources. Sludge contains a large amount of organic matter, various pathogens and other harmful substances. If it is not stabilized, it will become a "secondary pollution source", causing environmental pollution and the spread of pathogens.

[0003] Traditional sludge dewatering machines are mostly plate-frame, stacked, crawler, and negative pressure types. There are many problems in the dewatering process: 1. Due to the limitation of the filter, only a part of the free water can be removed.

[0004] 2. The filter is made of mostly chemical fiber materials, and its service life is very short. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a multi-media filter press dehydration device, 1. Dehydration without adding flocculants solves the problem of environmentally friendly treatment of mud cakes. 2. Supercritical technology is used to press out capillary water to improve water drag efficiency; 3. Special filter screen material solves the problem of filter press separation filter screen life. 4. Reduce filter press cost and improve filter press efficiency.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A multi-media filter press dehydration device comprises an equipment frame (1), characterized in that one end of the equipment frame (1) is connected to a hydraulic device and the other end is connected to a component (2); a filter screen (4) is connected between the hydraulic device 1 and the hydraulic device (2); a desludging structure (3) is provided between the filter screen (4) and the hydraulic device (6); a desludging structure (5) is provided between the filter screen (4) and the hydraulic device (6), and the filter screen (4) is provided with a feed port (8); a water collecting box (7) is provided below the filter screen (4); and a collection port (9) is provided at the front end of the water collecting box (7).

[0007] The surface of the filter screen (4) is provided with a hydrophobic guide groove.

[0008] The filter screen (4) is a macro spring filter screen.

[0009] Chemical components can be added to the gaps of the macro-spacing spring filter for filtering.

[0010] The filter screen (4) is made of metal.

[0011] The beneficial effects of the present invention are: Can withstand ultra-close pressure.

[0012] The gap can be adjusted at will.

[0013] Longer lifespan.

[0014] Higher dehydration rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the filter structure of the present invention.

[0017] Among them, 1 is the equipment frame; 2 is the hydraulic device; 3 is the desludging structure; 4 is the filter screen; 5 is the desludging structure; 6 is the hydraulic device; 7 is the water collecting box; 8 is the feed port; and 9 is the collection port. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and working principles.

[0019] As shown in 1, a multi-media filter press dehydration device comprises an equipment frame (1), characterized in that one end of the equipment frame (1) is connected to a hydraulic device, and the other end is connected to a component (2); a filter screen (4) is connected between the hydraulic device 1 and the hydraulic device (2); a desludging structure (3) is provided between the filter screen (4) and the hydraulic device (6); a desludging structure (5) is provided between the filter screen (4) and the hydraulic device (6), and the filter screen (4) is provided with a feed port (8); a water collecting box (7) is provided below the filter screen (4); and a collection port (9) is provided at the front end of the water collecting box (7).

[0020] like Figure 2 As shown, the surface of the filter screen (4) is provided with a hydrophobic guide groove. The filter screen is installed in the filter screen fixing device. By adjusting the adjustment devices at both ends of the filter screen device, the filter screen increases the pitch gap under the action of metal elasticity. By calculation and referring to the mesh number of the existing dehydrator filter screen, the water pressure test is performed to determine the mesh number of the filter screen required for water molecules to pass through, and compared with the actual mesh number required for sludge dehydration, and finally determine the filter gap value required for sludge dehydration. Through the test, the filter screen gap is between 0 and xxx values. The working principle of the present invention is: The sludge to be dehydrated enters the filter cavity at 8. After the filter cavity is full, the pressure is increased by 6. The water in the pressure increase process is removed by the filter at 4. The water discharged during the dehydration process is collected by 7 and discharged naturally and continuously. The dehydrated sludge forms a mud cake. The desludging structures at 5 and 3 are opened, and the mud cake is transported away by the conveyor belt at the collection port 9, and the equipment frame at 1. Through the actual operation test, the sludge with a moisture content of 98% is sent to the sludge dehydration equipment, and the sludge is dehydrated to a moisture content between 40% and 50, and the dehydration working conditions are met.

[0021] After the dewatered sludge enters the filter cavity, the hydraulic device moves to increase pressure for dehydration after the filter cavity is full. During the pressurization process, water is released from the filter. During the dehydration process, the released water is naturally and continuously discharged from the outside of the filter into the water collection tank. The dewatered sludge forms a mud cake. The hydraulic device exits the movement, the desludging structure opens, and the mud cake enters the collection port and is transported away by the conveyor belt, the equipment frame.

Claims

1. A multi-media filter press dehydration device, comprising an equipment frame (1), characterized in that: One end of the equipment frame (1) is connected to the hydraulic device, and the other end is connected to the component (2); a filter screen (4) is connected between the hydraulic device (1) and the hydraulic device (2); a desludging structure (3) is provided between the filter screen (4) and the hydraulic device (6); a desludging structure (5) is provided between the filter screen (4) and the hydraulic device (6), and the filter screen (4) is provided with a feed port (8); a water collecting box (7) is provided below the filter screen (4); and a collection port (9) is provided at the front end of the water collecting box (7).

2. A multi-media filter press dehydration device according to claim 1, comprising an equipment frame (1), characterized in that: The surface of the filter screen (4) is provided with a hydrophobic guide groove.

3. A multi-media filter press dehydration device according to claim 1, comprising a device frame (1), characterized in that: The filter screen (4) is a macro spring filter screen.

4. A multi-media filter press dehydration device according to claim 3, comprising a device frame (1), characterized in that: Chemical components can be added to the gaps of the macro-spacing spring filter for filtering.

5. A multi-media filter press dehydration device according to claim 1, comprising a device frame (1), characterized in that: The filter screen (4) is made of metal.

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