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Russian Vertical Leaf Filter
Structural Composition of the Leaf Filter
This equipment primarily consists of a filter tank, filter leaves, a discharge mechanism, and a lid-lifting mechanism. The filter leaves, which serve as the core filtration components, utilize multi-layer stainless steel mesh. Compared to other enclosed filtration systems with the same filtration area, this unit features a more compact footprint; its vertical orientation facilitates vibration-based discharge of the filter cake.
The leaf-style filter element is typically constructed by riveting together five layers of metal mesh with varying mesh counts, framed by a rectangular or circular stainless steel border. The mesh density increases from the outer layers toward the inner layers. The two outermost layers are made of 316 stainless steel, while the three inner layers are made of 304 stainless steel. The bottom of the filter leaf inserts into the discharge port of the filtrate collection manifold, with a rubber seal ensuring a tight connection.
Working Principle of the Vertical Leaf Filter
The liquid to be filtered enters the sealed filter tank via the feed pump. Under pressure, the liquid passes through the filter mesh from the outside of the filter leaves into the interior, while solid particles are retained on the surface.
As the filtration process continues, the filter cake on the mesh surface gradually thickens, forming a more stable filtration layer. The clarified liquid collects through internal channels and discharges from the outlet. For materials requiring higher filtration precision, filter aids such as diatomaceous earth or perlite can be used to pre-coat the filter leaves and form a filtration layer.
Upon completion of filtration, air is introduced through the overflow port to further expel residual liquid from the equipment and reduce the moisture content of the filter cake. Subsequently, the vibration mechanism is activated to dislodge the filter cake from the surfaces of the filter leaves, allowing it to be discharged through the bottom discharge port.
The vertical leaf filter only needs to be cleaned once a month.
Features and advantages of vertical leaf filter
The vertical filter element is made of a stainless steel composite sieve, which has the characteristics of corrosion resistance, easy cleaning, and long service life (2~3 years), which is much better than traditional filter cloth, which is not easy to block holes and has low maintenance cost.
The pipeline is connected to a fully enclosed filter. Compared with the open-air filter of the traditional plate and frame filter, the fully enclosed filter material is not polluted, does not volatilize, has low material loss, and is of better quality.
The filter screen of the vertical pressure leaf filter is cleaned once a month, and there is no need to replace the filter screen within three years of normal use. Compared with the traditional plate and frame filter, the pressure leaf filter needs to be cleaned once after filtering, and the filter cloth needs to be replaced once every 3-5 days, which reduces labor costs and production costs.
The vertical leaf filter press is equipped with a vibration slag discharge device, which can automatically remove slag without manual slag removal. Compared with the traditional plate and frame filter that requires manual slag removal, the vertical leaf filter has a high degree of automation, which can save time. The production efficiency is improved, and the production cost is reduced.
Vertical leaf filter parameters
| Model | Filtration Area (m²) | Filter Cake Volume (L) | Edible Oil Capacity (T/h) | Resin Capacity (T/h) | Beverage Capacity (T/h) | Rated Pressure (MPa) | Max. Pressure (MPa) | Working Temperature (℃) | Filter Vessel Volume (L) | Machine Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| DWL-2 | 2 | 30 | 0.4–0.6 | 1–1.5 | 1–3 | 0.1–0.4 | 0.6 | ≤150 | 120 | 300 |
| DWL-4 | 4 | 60 | 0.5–1.2 | 2–3 | 2–5 | 250 | 400 | |||
| DWL-8 | 8 | 105 | 1–1.8 | 3–6 | 4–7 | 420 | 600 | |||
| DWL-10 | 10 | 150 | 1.6–3 | 5–8 | 6–9 | 800 | 900 | |||
| DWL-12 | 12 | 240 | 2–4 | 6–9 | 8–11 | 1000 | 1100 | |||
| DWL-15 | 15 | 300 | 3–5 | 7–12 | 10–13 | 1300 | 1300 | |||
| DWL-20 | 20 | 400 | 4–6 | 9–15 | 12–17 | 1680 | 1700 | |||
| DWL-25 | 25 | 500 | 5–7 | 12–19 | 16–21 | 1900 | 2000 | |||
| DWL-30 | 30 | 600 | 6–8 | 14–23 | 19–25 | 2300 | 2500 |
Applications of vertical pressure leaf filter
Petrochemical: polyether, diesel, lubricating oil, white oil, transformer oil
Mineral oil and base oil: dibutyl ester, dioctyl ester
Grease: crude oil, drift oil, gasification oil, winterization oil, etc.
Food: gelatin, salad oil, starch, syrup, monosodium glutamate, milk, etc.
Pharmaceuticals: hydrogen peroxide, vitamin C, glycerin, etc.
Coatings: varnish, resin paint, real lacquer, 685 varnish, etc
Vertical Leaf Filter Finished product
