Grain processing
Guangchang TBLM and TBLMA Pulse Bag Filters
Guangchang makes three pulse-cleaned bag filters for dust collection in grain and feed plants: the low-pressure TBLM cylindrical filter, the square TBLMA filter and a cylindrical pulse-jet range coded TBLMy. The low-pressure sheet is the most complete, giving bag area, air volume, weight and cleaning-air use for each model and for 1800, 2000 and 2400 mm bags. The square and cylindrical tables print numbers without units, so ask for a corrected table with your quote. Fine, heat-resistant, moisture-resistant and antistatic bags are offered.
Jiaxing Guangchang Machinery Co., Ltd. ↗
Build my procurement briefThe three filter types and how they clean
These are the filter units of a dust system. Fan, ducting and pickup hoods are sized separately, and the bags and air duty should match the table Guangchang issues for your order. Pickup points in Guangchang's own range include the vent on the TDTG bucket elevator and the aspiration of the TQLZ vibrating cleaning sieve.
| Filter | Design and what to ask |
|---|---|
| Low-pressure TBLM cylinder | Low-pressure jet cleaning in a cylindrical body, a flat bottom with scraper discharge and a separate upper compartment. Guangchang says bags can be inspected without stopping production; ask for its written inspection procedure. |
| Square TBLMA | Round bags in a box body, one valve pulsing several bags, quick-clamp bag fixing and a large access door. Ask for pulse timing, pulse pressure and the controls supplied. |
| Cylindrical pulse-jet | Cylindrical body with one valve cleaning several bags, quick-clamp bags and access. One table row reads TBLMA52 among TBLMy codes, so confirm the model you are quoted. |
| Bags | Fine, heat-resistant, moisture-resistant and antistatic bags are offered. Ask for the media grade, temperature and humidity range, and antistatic test data for your dust. |
Published specifications
Read each value with its stated conditions, and ask the manufacturer for any limit not listed here.
| Specification | Published value | Meaning / limit |
|---|---|---|
| Filter families | Low-pressure TBLM / square TBLMA / cylindrical pulse-jet [1] [2] [3] | Three separate sheets and designs. Similar codes do not make them interchangeable. |
| Bag lengths (low-pressure TBLM) | b = 1800; a = 2000; c = 2400 mm [1] | Given on the low-pressure sheet only. The other two sheets print three area options without saying which bag length each means. |
| Units on TBLMA and TBLMy tables | Filter-area and air-volume rows have no printed units [2] [3] | Ask Guangchang for the table with units and the meaning of each area option. |
| Resistance (low-pressure TBLM) | <1470 Pa [1] | Filter resistance only. Add duct losses when sizing the fan, and ask whether the figure is for clean or loaded bags. |
| Collection efficiency | Square and cylinder-jet prose claim ≥99.9% [1] [2] [3] | No dust type, inlet loading or test method is given. The low-pressure table shows >99 under a column labelled Pa. |
Low-pressure TBLM with 2000 mm bags
This table uses the a column (2000 mm bags) for each model so the comparison stays on one bag length. The sheet also gives b (1800 mm) and c (2400 mm) columns with their own area, air volume and weight. Air volumes are in m³/h.
| TBLM model, a (2000 mm bag) | Filter area, air volume and machine weight |
|---|---|
| 39-I, a/2000 mm | 29.4 m²; 5290–7060 m³/h; 1240 kg. |
| 52-I, a/2000 mm | 39.2 m²; 7060–9410 m³/h; 1410 kg. |
| 78-I, a/2000 mm | 58.8 m²; 10580–14110 m³/h; 1880 kg. |
| 104-I, a/2000 mm | 78.4 m²; 14100–18810 m³/h; 2320 kg. |
| 130-I, a/2000 mm | 98.0 m²; 17440–23520 m³/h; 2990 kg. |
| 156-I, a/2000 mm | 117.6 m²; 21170–28220 m³/h; 3450 kg. |
| 168-I, a/2000 mm | 126.6 m²; 22790–30380 m³/h; 3700 kg. |
| Ordering code | Guangchang's example code includes a letter for the installation form. Give the model, bag length and inlet and outlet orientation together. |
Sources [1]
Square TBLMA: area options and air volume
The square sheet prints three area figures per model and an air-volume range, without units and without saying what the three options are. The numbers below are as printed. Ask Guangchang which bag length each option uses.
| TBLMA model | Three area options / air-volume range (units not printed) |
|---|---|
| TBLMA4 | 1.6/2.5/3.3; air 800–1200. |
| TBLMA6 | 2.5/3.7/5; 1200–1500. |
| TBLMA9 | 3.7/5.5/7.4; 1900–2400. |
| TBLMA12 | 5/7.3/9.9; 2200–3000. |
| TBLMA15 | 6.2/9.2/12.3; 2500–3600. |
| TBLMA18 | 7.4/11/14.8; 3150–4500. |
| TBLMA21 | 8.6/12.8/17.2; 3600–5500. |
| TBLMA24 | 9.9/14.7/19.7; 4220–6000. |
| TBLMA28 | 11.5/17.1/23; 4500–7500. |
| TBLMA36 | 14.8/22/29.6; 5800–8400. |
| TBLMA48 | 19.7/29.3/39.4; 6400–10800. |
| TBLMA56 | 23/34.2/46; 8400–12000. |
Sources [2]
Cylindrical pulse-jet: codes, area options and air volume
This table also lacks units and an explanation of the three area options. One row is printed TBLMA52 among the TBLMy codes. Rows are listed in the sheet's order.
| Code as printed | Three area options / air-volume range (units not printed) |
|---|---|
| TBLMy9 | 3.7/5.5/7.4; air 400–1998. |
| TBLMy18 | 7.4/11/14.8; 790–3960. |
| TBLMy26 | 10.7/15.9/21.3; 1145–5730. |
| TBLMy39 | 16/23.8/32; 1720–8610. |
| TBLMy104 | 42.7/63.5/85.3; 4590–22950. |
| TBLMA52, as printed | 21.3/31.8/42.7; 2290–11460. Ask Guangchang which model this row describes. |
| TBLMy78 | 32/47.6/64; 3440–17180. |
| Comparing families | Get the units and area options confirmed before comparing these rows with another family or working out filtration velocity. |
Sources [3]
Low-pressure TBLM: pressure, cleaning air and motors
The low-pressure sheet gives several pressure and air-use figures. Each covers a different duty, so size the fan and compressed-air supply from all of them together with Guangchang. Two headings look misprinted and are flagged below.
| Sheet field | What it covers |
|---|---|
| Equipment resistance <1470 Pa | Pressure loss across the filter. Ask whether it is for clean or loaded bags, and add duct losses for the fan. |
| Filtering wind pressure −1960 to +2940 Pa | The range of system pressure the filter body works under, negative to positive. Confirm the reference point. |
| Blowing pressure 4.9×10⁴ Pa | Pulse-cleaning pressure. Ask for the compressed-air supply specification and valve settings. |
| Cleaning-air consumption | 39/52/78/104/130/156/168 groups: 0.3/0.5/0.7/1/1.3/1.5/1.6 m³/min respectively. Ask for the reference state and the pulse timing. |
| Motors | 39–104: 1.1+1.1 kW; 130: 1.5+1.1; 156/168: 2.2+1.1+1.1. Ask what each motor drives; the main fan and compressor are extra. |
| Filtering speed | Printed as 3–4 under an m/h heading. Ask Guangchang to confirm the unit before calculating anything from it. |
| Collection efficiency | The column shows >99 under a Pa heading. Ask for the efficiency in percent and its test basis. |
Sources [1]
Collection efficiency and explosion protection
Guangchang states a collection efficiency of at least 99.9% for the square and cylindrical pulse filters. The sheets do not give the inlet dust concentration, particle sizes, material or test method behind that figure, and the low-pressure table's >99 sits under a heading labelled Pa.
If your site has an outlet dust limit, agree a test with Guangchang: the dust and material, air volume, bag and filter build, inlet and outlet sampling points and the result you will accept. Record pressure drop and cleaning-air behaviour in the same test, since performance changes as bags load.
Antistatic bags are one part of protecting a dust filter. None of the three sheets includes venting, isolation, suppression or a hazardous-area rating. Have explosion protection assessed for your plant and ask Guangchang to confirm in writing what it can supply.
Layout, dust discharge and bag changes
The low-pressure sheet shows six installation-form sketches and gives weight by model. The other two sheets give neither, and none of the sketches is a dimensioned drawing. Bag length and discharge arrangement both change the space needed. Where filters fit in a grain processing plant, next to cleaners and elevators, is set out in our grain cleaning and handling line basics guide.
Model and layout
Confirm family, model code, bag option and length, and installation form on a dimensioned drawing.
Discharge and supply scope
Which dust outlet and discharge device (scraper or other) is fitted, and whether the fan, ducting, compressed air and controls are included.
Access and service
Bag-change and inspection instructions with the filter stopped and isolated, clearance needed, and spare bags, clamps, diaphragms, valves and seals.
Records
Keep the corrected units and model labels, the dust, air and bag configuration, pressure and cleaning-air data, and the measured collection result.
Buyer questions
Do the square TBLMA area options match the 1800/2000/2400 mm bag lengths?
The square sheet does not say. Ask Guangchang which bag length each of the three area figures uses. [1] [2]
Is the low-pressure filtering speed 3–4 m/h or m/min?
The sheet prints m/h. Ask Guangchang to confirm the unit before you use it to check filtration velocity. [1]
Is TBLMA52 on the cylindrical sheet really TBLMy52?
The sheet prints TBLMA52. Ask Guangchang to confirm the model code on your quote. [3]
Prepare a model-specific brief
Write your actual conditions below. This local worksheet is not sent, uploaded or saved after reload. Copy or print it before leaving.
Sources
Specifications come from the manufacturer's publications listed below, with the date each was checked.
- Official low-pressure TBLM cylinder sheet
manufacturer · Checked 2026-10-12
Area in m², air volume in m³/h, weight in kg and cleaning air in m³/min for 1800, 2000 and 2400 mm bags; resistance, pressure, blowing pressure and motor figures.
- Official square TBLMA pulse sheet
manufacturer · Checked 2026-10-12
Twelve TBLMA models with three area figures and an air-volume range each, the ≥99.9% efficiency figure and the bag options.
- Official cylindrical pulse-jet sheet
manufacturer · Checked 2026-10-12
TBLMy models plus a row printed TBLMA52, with area and air-volume figures, multi-bag valve cleaning, clamped bags and the ≥99.9% figure.
- Official dust-collection component catalogue
manufacturer · Checked 2026-10-12
Catalogue entries for Guangchang's three pulse filters.
Report a correction through our contact form, quoting Guangchang TBLM and TBLMA Pulse Bag Filters and the relevant specification.