板框過濾布目數選擇與微米對照說明

板框過濾布廣泛應用于：
? 鎳精礦
? 銅精礦
? 污泥脫水
? 冶金行業
? 化工行業

在實際選型過程中，客戶普遍習慣使用“目數”作為過濾精度的判斷依據。

一、什么是目數（Mesh）？

**目數（Mesh）**是指：

每英寸（25.4mm）長度內的孔數

目數與過濾精度關系如下：
? 目數越大 → 孔徑越小 → 過濾越精細
? 目數越小 → 孔徑越大 → 過濾通透性越強

二、常見目數與微米對照參考

根據行業通用篩網目數—微米對照表，部分常用參數如下：

目數（Mesh） 孔徑（μm）
60目 246μm
80目 198μm
100目 165μm
110目 150μm
180目 83μm
200目 74μm
250目 61μm
270目 53μm
325目 47μm
425目 33μm
500目 25μm
625目 20μm
800目 15μm

可以看到：
? 100目 ≈ 165微米（中等過濾）
? 200目 ≈ 74微米（精細過濾）
? 500目 ≈ 25微米（高精度過濾）
? 800目 ≈ 15微米（超精細過濾）

在板框壓濾應用中，常見目數一般在 100目—800目 之間。

三、不同工況如何選擇目數？

目數選擇需要結合以下因素：

1?? 物料粒徑
? 粗顆粒 → 100–150目
? 中等顆粒 → 150–300目
? 細顆?；蚋咭?→ 300目以上

2?? 過濾速度要求
? 追求通量 → 低目數
? 追求清液清澈度 → 高目數

3?? 濾餅含水率要求
? 高壓脫水工況 → 建議中高目數配合合理織造結構

4?? 行業參考

行業 常見目數區間
銅/鎳精礦 150–300目
污泥脫水 100–200目
化工精細過濾 300–500目

（具體仍需根據物料粒徑分布測試確定）

四、常見板框過濾布型號

常見型號包括：
? 丙綸750系列（750A / 750B / 750AB）
? 丙綸108C
? 丙綸840AB
? 滌綸621
? 滌綸3927
? 錦綸6533

不同材質區別：

材質 特點
丙綸 耐酸堿、性價比高
滌綸 強度高、耐磨
錦綸 彈性好、耐沖擊

五、丙綸濾布優勢

蘇東壓濾機丙綸系列濾布已通過檢測認證，符合法規多項檢測標準。

特別適用于：
? 大過濾面積臥式壓濾機
? 多室結構設備
? 密封要求高的工況

可有效解決：
? 密封差
? 漏料
? 濾布變形

并具備：
? 供貨穩定
? 專業硫化技術團隊支持
? 高性價比

六、選型核心建議

目數 ≠ 唯一標準

板框過濾布選型應綜合：
? 目數（微米）
? 織造結構
? 單絲/復絲結構
? 克重
? 厚度
? 透氣量
? 設備壓力

真正實現：

濾布與設備的完美匹配

蘇東壓濾機濾布

? 1. 先明確尾渣的基本參數

建議先做污泥化驗（最好是實驗室過濾測試）：

參數 意義

固體含量（%） 決定濾布選擇及預處理需求

顆粒粒徑分布

影響過濾通量

泥漿黏度

影響泵送與脫水效果

濾餅干燥性

關乎出渣含水率

是否含纖維長鏈

長纖維可能纏繞濾布

若暫時無法化驗，可用歷史運行數據或在線濁度、固含量估算。

? 2. 根據產量確定規格與處理能力

造紙行業尾渣量大且用量不穩定，通常按日處理量或小時平均計算：

? 日處理量（噸/天）

? 設計流量（m3/h 或 t/h）

? 峰值負荷余量（建議 10–30%）

確定參數后選擇壓濾機規格：

日處理量 推薦壓濾機規格

<10 t/d 400–800 型

10–30 t/d 800–1200 型

>30 t/d 1200–1500 或更大

型號一般按板寬（mm）+板數設計，如 800×800 / 1000×1000 / 1200×1200 / 1500×1500。

? 3. 選壓濾機板框類型

造紙尾渣壓濾機常用以下結構：

? (1) 板框式壓濾機

? 優點：結構簡單、設備投資低

? 缺點：占地大、自動化程度低

? 適合：產量小、資金受限

? (2) 壓縮式（楔形 / 壓榨式）壓濾機

? 有機械壓榨輔助壓濾

? 脫水效果好、濾餅更干

? (3) 自動快開式壓濾機（頂裝 / 邊裝）

? 自動開閉、濾布自動清洗

? 適合高頻開閉的場景

對于造紙尾渣常選 自動快開 + 壓縮型壓濾機，出渣含水率較低，易于運輸與后續處理。

? 4. 濾布選擇（對脫水效果關鍵）

尾渣富含長纖維、易堵布，因此：

?? 材質推薦：

? PET / PPS / PA（耐磨、耐高溫、耐堿）

? 單層或雙層復合濾布

? 較粗濾孔，有利于纖維通過（減少堵布）

?? 結構形式：

? 方格紋 / 網狀紋理 → 抗堵性能好

? 過濾速度快、易清洗

?? 濾布清洗方式：

? 高頻反沖洗

? 高壓水槍自動清洗

? 濾布更換便捷

? 5. 預處理設計

為了提高壓濾效果，一般需要配合預處理：

? (1) 化學絮凝

? 投加聚丙烯酰胺（PAM）

? 投加無機絮凝劑（如 PAC、硫酸鋁）

目的：

? 粒子聚團 → 形成易濾性絮凝體

? 降低濾餅含水率

? 提高過濾通量

需要實驗室或現場試劑調試最佳投加量。

? 6. 驅動與自動化控制

建議配置：

? 變頻驅動推進

? 自動開閉控制系統

? 壓力 / 液位 / 流量監控

自動化可顯著提升：

? 運行穩定性

? 操作安全性

? 人力成本減少

? 7. 后端排渣與運輸

根據脫水后的濾餅用途或處理方式：

? 低含水率 → 可燃燒 / 堆肥 / 回用

? 中含水率 → 堆放、再干燥

? 高含水率 → 需進一步干燥

需預留：

?? 皮帶輸送機或刮板輸送

?? 濾餅集料箱

?? 污泥泵與泵房

? 8. 現場條件約束

在選型時還要考慮：

? 建筑高度 / 吊裝空間

? 電力供應

? 污泥泵揚程與管路

? 排水條件

?? 實例選型（參考）

序號 日處理量 污泥特點 推薦機型

1 15 t/d 中等固含量尾渣 1000×1000 自動壓榨式

2 40 t/d 高纖維、高黏度 1200×1200 全自動壓濾機

3 5 t/d 低量試運行 800×800 板框式

?? 選型流程建議

1. 化驗尾渣（固含量、濾速、黏度）

2. 做小試或現場試驗（絮凝劑篩選 + 壓濾測試）

3. 估算處理量 + 設計冗余

4. 確定主機型號 + 驅動 + 控制

5. 配置絮凝系統 + 輸送系統 + 自動化

如果你愿意提供 尾渣具體化驗數據 / 日處理量 / 現場照片或流程圖，我可以幫你做進一步的 精確機型配置與報價建議。

報價咨詢：18851718517

壓濾機廠家聯系方式:18851718517

Filter Press Filter Cloths Below are several types of filter press cloths:

1. Polyester staple fibre filter cloth: acid-resistant, weak alkali resistant, abrasion-resistant, corrosion-resistant, good reversibility, very poor conductivity.
2. Polyester long fibre filter cloth: smooth surface, good abrasion resistance, high strength, through twisting, higher strength and better abrasion resistance, thus the fabric has good air permeability, fast water leakage and easy cleaning.
3. Polypropylene filter cloth: divided into polypropylene short fibre filter cloth and polypropylene long fibre filter cloth.

Filter press cloth has the advantages of fast filtration speed, good filtration effect, acid and alkali resistance, high temperature resistance, abrasion resistance, stretch resistance, etc. It is widely used in chemical, pharmaceutical, food, metallurgy, petroleum, environmental protection and other industries.

The principle of diaphragm filter press is that a layer of diaphragm plate is added between the filter plate and filter cloth of the filter press, and when the feeding is finished, high-pressure fluid or gas medium can be injected into the diaphragm plate, at which time the whole diaphragm will bulge up to press the filter cake and realise the further dewatering of the cake, which is also known as the press filtration. Diaphragm filter press has the advantages of high pressing pressure, good corrosion resistance, convenient maintenance, safety and reliability, etc. It is the replacement and upgrading equipment of ordinary chamber filter press and plate and frame filter press. Diaphragm Filter PressDiaphragm Filter Press is widely used in metallurgy, coal gas, papermaking, coking, pharmaceutical, food, brewing, fine chemical industry.

1. 將壓濾機濾布其中的一塊卷成細長的形狀。
2. 將濾布的兩面整理平整，并使系帶處于濾板的上方。
3. 將系帶系好的濾布前后兩片平整的覆蓋濾板。
4. 檢查濾布上的進料孔是否與濾板上的對齊。

1. Testing constant pressure filtration constant and specific resistance: In the experiment, the constant pressure filtration constant and specific resistance are calculated by measuring the parameters such as filtration pressure, filtration time and mass of filtrate, so as to understand the performance of filtration media and filtration mechanism.
2. Determination of the compression index of the filter cake under different pressures: By changing the filtration pressure and observing the compression of the filter cake, the compression index of the filter cake under different pressures is determined, so as to understand the structure and nature of the filter cake.
3. Learning the method and operation of washing rate measurement: in the experiment, by measuring the washing rate, to understand the performance of the filter media and washing efficiency during the washing process.
4. Observe the experimental medium flow state in the pipeline: through the experiments to observe the experimental medium flow state in the pipeline, to understand the rules and characteristics of the flow in the pipeline.
5. Measurement of flow rate and pressure drop during filtration: Experimentally measure the flow rate and pressure drop during filtration to understand the performance and filtration effect of the filter.
6. Understanding the structure, operation and maintenance methods of plate and frame filter press: through the experiment to understand the structure, operation and maintenance methods of plate and frame filter press, laying a foundation for the subsequent actual production.

1. 檢查濾板是否對正，濾布是否干凈整齊、無褶皺。
2. 壓緊濾板：壓緊油缸(或是其它的壓緊機構)進行工作，使動板向定板的方向進行移動，把兩者之間的濾板給壓緊。把相鄰的濾板構成一個封閉的濾室。
3. 壓濾過程：給料泵(也就是隔膜泵)將礦漿輸送到濾室里，等到充滿后，壓濾工作開始，借助壓力泵或是壓縮空氣的壓力，進行固液分離的操作。
4. 松開濾板：利用拉開裝置將濾板按照設定好的方式、設定好的次序拉開。
5. 濾板卸料：拉開裝置相繼拉開濾板以后，濾餅就會借助自重脫落，由下部的運輸機將其運走。
6. 清洗濾布：濾布原則每次出完泥后進行沖洗，也可以為每天一次。

1. Resistant to acid, weak alkali, abrasion, corrosion, good reversion, very poor electrical conductivity.
2. Smooth surface, good abrasion resistance, high strength, through the splicing and twisting, higher strength and better abrasion resistance, so that the fabric has good air permeability, fast leakage and easy cleaning.
3. Polyester staple fibre filter cloth raw material structure is short and hairy, woven fabrics are dense, good particle retention, but stripping, poor air permeability.
4. Nylon filter cloth nylon to fibre high strength, strength of 4-5.3Cndtex. elongation of 18%-45%. 10% elongation elasticity of the same rate of 90% above. Abrasion resistance is the highest among many kinds of fibres.
5. Polypropylene filter cloth filter cloth classification: polypropylene to short fibre filter cloth; polypropylene long fibre filter cloth.

Filter press cloths are classified and selected according to the selected cloth material, the way the material is constructed, and the way it is prepared.

1.1Filter Press Cloth Models

1.1.1 Polypropylene filter cloth

Polypropylene is a fibre made from propylene as raw material by polymerisation and melt spinning, which is cheaper. Polypropylene filter cloth has good chemical resistance, good resistance to acid and alkali, high mechanical strength, good abrasion resistance. The wet strength of polypropylene is basically equal to the dry strength, and the strength of polypropylene filter cloth basically remains unchanged in the process of filtration after feeding mud. Polypropylene filter cloth hygroscopicity is very small, almost non-hygroscopic, the general atmospheric conditions of the moisture return rate is close to zero, but it has a core suction effect, through the fabric in the capillary transmission of water vapour, but does not play any absorption role. The longitudinal surface of polypropylene is flat, straight and light, which also facilitates the stripping of sludge after sludge compression. However, polypropylene filter fabric has poor light resistance, poor thermal stability and is easy to age.

1.1.2 Polyester filter cloths

Polyester is a fibre-forming polymer - polyethylene terephthalate (PET) - made from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) by esterification or ester-exchange and polycondensation reactions, and then made into fibres by spinning and post-treatment. Polyester has high strength, good abrasion resistance, good light resistance, corrosion resistance, resistance to bleach, oxidants, cones, ketones, petroleum products and inorganic acids, resistance to dilute alkali, not afraid of mildew, but the hot alkali can be made to decompose.

Due to the low moisture absorption of polyester filter cloth, its wet strength is basically the same as its dry strength. The elasticity is close to that of wool, and it can be almost fully recovered when elongated 5%-6%. Wrinkle resistance exceeds that of other fibres, i.e. the fabric is not wrinkled and has good dimensional stability.

1.1.3 Nylon filter cloth

Nylon fibre high strength, strength of 4 ~ 5.3Cndtex, elongation of 18% ~ 45%. 10% elongation elasticity in the same rate of 90% to ± o nylon strength in the strongest fibres, it is measured, nylon fibre abrasion resistance of cotton fibre 10 times, 50 times viscose. Abrasion resistance is the first of a variety of fibres. Nylon fibre is resistant to strong alkali and weak acid. However, nylon is not resistant to light, easily discoloured and brittle, so nylon fabrics should not be exposed to sunlight for a long time.

1.1.4 Vinylon filter cloth

Vinylon filter cloth chemical name is called polyvinyl alcohol, its strength is lower than polyester, strength is only 3.52~5.72Cndtex. breaking elongation 12%~25%. elasticity is poor, the fabric maintains the shape of the poor, better abrasion resistance, durability is 1~2 times more than pure cotton. But there is a big advantage is able to withstand the role of strong alkali, and moisture absorption is good, easy to combine with the rubber, is a good material for the rubber industry, it is a disadvantage of lower temperature resistance, the temperature up to 100 dragons on the contraction of the acid is not resistant.

1.2 Filter cloth material structure

According to the structure of the filter cloth material can be divided into: monofilament, compound filament long fibre and staple fibre.

Monofilament is generally a synthetic fibre pulled into a single filament of 0.16-0.32dtex, the filter cloth woven by it has the advantages of smooth surface, uniform void, small specific resistance, fast water permeability, not easy to block, easy to clean and good sludge stripping performance. However, it traps particles of larger diameter, the filtrate has a higher solid rate and a lower recovery rate.

Compound filament, i.e. warp/weft, consists of multiple fibres woven into a single filament. Compound filament long fibre woven into filter cloth with it, good tensile strength, the retention of particles is better than monofilament, but the sludge unloading peeling performance is slightly worse.

Complex filament staple fibre is made of natural cotton wool fibre or synthetic staple fibre twisted into multiple strands, which has a fluffy fibre, presenting good particle retention performance, good sealing, but the disadvantage is that the pores are easy to clog, cleaning and sludge stripping performance is poor.

1.3 Filter cloth preparation

According to the weaving method of filter cloth can also be divided into three kinds: plain, twill and satin.

Plain filter cloth has dense structure and small pores, so it has good particle retention, high filtrate clarification, long service life and cheaper price. The disadvantage is that the specific resistance is large, easy to clog, and the performance of slag discharge is poor.

Satin weave fabric has the largest pores, small specific resistance, not easy to plug, good sludge stripping performance. However, the particle retention capacity is low, the filtrate is turbid, and the recovery rate is low.

The performance of twill filter cloth is between plain and satin, but it is widely used because of its strong friction resistance, high filtration speed and longest life.

Requirements for filter cloth of plate and frame filter presses for urban wastewater treatment plants

Urban sewage treatment plant sludge production is larger, the work intensity is higher, the filter cloth is often used repeatedly extrusion, need to have a certain tensile strength, no stretch, good dimensional stability, the mechanical strength of the filter cloth requirements are higher; in the sludge conditioning and tempering process is often required to add PAM, iron salts, aluminium salts or lime and other agents, the sludge nature of the sludge is more complex, the sludge is alkaline after the conditioning, the filter cloth should be able to have a certain degree of Corrosion resistance.

Urban sewage treatment plant sludge is mainly organic particles, fine particles, the need for relatively small pore filter cloth, filtration filtrate to be clearer, conducive to improving the recovery rate of sludge; filter cloth permeability is also good, fast filtration speed, faster discharge of water out of the sludge, to improve the efficiency of the plate and frame machine; filter cloth should not be clogged; filter cloth dewatering of sludge after the stripping of the good, the mud cake in the plate and frame machine can be automatically stripped after the opening of the frame; easy to rinse the regeneration, to extend the use cycle, reduce the cost of using the cloth. The filter cloth is easy to be washed and regenerated, which prolongs the use cycle and reduces the use cost.

Therefore, in the plate and frame filter press cloth selection, to be able to meet the following requirements: high strength, corrosion resistance, filtrate clear, fast water permeability, not easy to plug, easy to peel, long life.

3Analysis of test data

According to the actual processing experience, for the above requirements, combined with the characteristics of the material, urban wastewater treatment plant plate and frame filter press dewatering machine filter cloth should be used for polypropylene or polyester filter cloth, the material composition of the selection of monofilament or filament filament long fibre, the preparation of choice of commonly used twill pattern, and will be the two kinds of filter cloth for testing and comparison, as shown in Table 3.

A plate and frame filter press with a filtration area of 4 n? was used in the test, the maximum pressing pressure was 15 kgf and the maximum closing pressure was 12 kgf, and two types of filter cloths as shown in Table 3 were used to analyse the sludge treatment under the conditions of different concentration of chemicals and different types of chemicals.

The sludge used for the test was the thickened sludge from the Shidongkou Sewage Treatment Plant, and the chemicals used were fly ash from sludge drying and incineration, ferric chloride and cationic polyacrylamide.

3.1 Effect of different agents on the water content of filter fabrics

The test selected the common types of chemicals added, combined with the selection of plate and frame filter presses under different filter cloth conditions, water content and other conditions of the analysis," as shown in Table 4.

From the water content of the mud cake, without adding iron salt, the water content of the mud cake of 2# filter cloth is higher than that of 1# filter cloth, and after adding iron salt, the water content is obviously reduced, and the water content of 2# filter cloth is lower.

3.2 The effect of different dosage on the water content of the filter cloth

The test selected in the iron salt dosage fixed, fly ash dosage changing conditions, two filter cloth filtration after the water content of the situation shown in Table 5.

From Table 5, it can be seen that due to the better water permeability of the 2# filter cloth, the reduction of water content is particularly obvious with the increase of the concentration of fly ash injection.

3.3 Comparative analysis

Combining the above test results, a comparative analysis of the two filter cloths is shown in Table 6.

reach a verdict

With the growth of urban population, the continuous improvement of municipal services, sewage treatment technology innovation and the deepening of the degree of treatment, the amount of sludge produced in the process of sewage treatment will increase greatly, sludge dewatering and reduction is imperative, plate and frame machine as a more commonly used treatment equipment, the development prospects are broader.

The selection of filter cloth for plate and frame machine is very important, which needs to be considered comprehensively with a number of factors such as filtrate, water content of sludge cake, and the cost of use, etc. While summarising the nature of sludge and the characteristics of the treatment process of municipal sewage treatment plant, two commonly used filter cloths were selected for the experimental study, and the results showed that the polyester monofilament twill filter cloth was able to get a lower water content, but the filtrate was more turbid, and the recovery rate of the sludge dewatering was lower, while the Polypropylene compound filament twill filter cloth has a higher water content, but the filtrate recovery is good. Each sewage treatment plant can choose the appropriate filter cloth according to its own situation, to achieve the purpose of reducing the water content and improving the efficiency of use.

Technical: 188517-18517

郵箱：suton@su-ton.com

The filter cloth of filter press mainly includes: polyester filter cloth, polypropylene filter cloth, nylon filter cloth, polyvinyl chloride filter cloth and other kinds of filter cloth. Here we will introduce how to correctly install the filter cloth on the filter plate of the filter press.

1. Tighten the filter cloth clamps.

2. Hang the filter cloth on the filter plate and keep the surface of the cloth flat.

3、壓濾機濾布的夾布器從兩邊穿過壓濾機濾板的入料孔。

4.Tighten the cloth clamp;

5. Check whether the feed holes on the filter cloth are aligned with those on the filter plate.

6. Roll one of the filter cloths into a thin (tube) shape and then wear the inlet in the middle of the filter plate.

7, the two sides of the filter cloth will be arranged flat, and make the tie at the top of the filter plate, the front and rear pieces of the filter cloth tied with the tie will cover the filter plate flatly.

How to fit the first filter cloth of a filter pressCaveats:

1, the filter cloth around the filter plate pressing contact part should ensure flat, can not produce wrinkles, to avoid being squeezed by the filter plate filter cloth caused by damage or mud leakage.

2, to avoid the grommet tail is too long may reach into the part of the filter plate press fit and damage the filter cloth, or cause mud leakage, should cut off the short tail.

3, installation, need to pay attention to the filter cloth and filter plate between no foreign objects or larger sludge particles, larger sludge particles or foreign objects may be in the plywood, causing damage to the filter plate or filter cloth.

4, the installation of filter cloth should pay attention to the front and back (to the mud surface and non-mud surface), generally no special requirements, the cloth of the filter cloth (polished surface) to the mud. Otherwise, the wrong installation will result in easy blockage of the filter cloth and low filtration efficiency.

5、Don't lock the filter cloth too tightly with the grommet, otherwise the residual sludge in the filter cloth in the contact part of the filter plate pressing will not be removed by automatic cleaning.

6, spare filter cloth should be stored in a cool and dry place, it is recommended to use a dark shade cloth to be protected, to avoid ultraviolet radiation, to prevent the aging of the filter cloth material.

7, before installing the filter cloth, it is necessary to install the supporting filter cloth, whose function is to minimise the abrasiveness of the cloth being rapidly detached from the filter cake downward due to gravity and possibly rubbing the bumps on the surface of the filter plate when discharging sludge, in order to protect the filter filter cloth, prolong the service life of the filter cloth and enhance the filtration effect.

8, filter press filter cloth after cleaning, to hang to dry, temporarily not used filter cloth should also be placed in a cool, dry place, there are dark shade cloth to protect up, not be able to be the sun has been direct sunlight, otherwise the filter press filter cloth is easy to aging.