Grain processing
Guangchang TQSX and TQSF Gravity Stoners
Guangchang builds gravity destoners for taking stones and other heavy impurities out of paddy and wheat. It publishes five arrangements: standard suction (TQSX56–168), A-series suction (TQSX100A–250A), gravity-classified (TQSX100x2–180x2), double-ply (TQSF120x2) and A-series classified (TQSF80A–195A). They differ in air duty, drive and how they handle grain that ends up in the stone stream. Pick the arrangement for your grain first, then the size. Several sheets print capacity without a unit and one air figure looks misprinted, so ask Guangchang to confirm those in writing before you size the line.
Jiaxing Guangchang Machinery Co., Ltd. ↗
Build my procurement briefThe five destoner builds and what each does
All five builds separate by weight and air, which sets them apart from screen cleaners. IRRI's milling guide lists de-stoning as its own stage between pre-cleaning, paddy separation and grading, which helps place the machine in a rice line. Our note on grain cleaning and handling line basics puts the destoner after the sieve and magnet in a typical line.
| Build and model range | How Guangchang describes it |
|---|---|
| Standard suction, TQSX56–168 | For stones and mud-like heavy impurities in wheat, paddy and white rice. Only wheat has a capacity row. |
| A-series suction, TQSX100A–250A | Separate paddy and wheat rows, with twin vibration motors. Size paddy and wheat lines from their own rows, and ask about white rice separately. |
| Gravity-classified, TQSX100x2–180x2 | Air passes up through the grain bed; grain and heavy impurities move in opposite directions because of their different density and suspension speed. Effective screen sizes are printed. |
| Double-ply, TQSF120x2 | Adds a secondary screen with its own fan to pull grain back out of the stone stream. Guangchang says this cuts grain loss but gives no figure. |
| Classified A, TQSF80A–195A | Guangchang says it holds grain better when feed stops and cites patent number 8928366. Ask for the patent document and a stop-start demonstration. |
Published specifications
Read each value with its stated conditions, and ask the manufacturer for any limit not listed here.
| Specification | Published value | Meaning / limit |
|---|---|---|
| Separation task | Heavy impurities such as stones in grain [1] [2] [3] [4] [5] | Ask Guangchang for the stone-removal rate it will commit to on your grain, and for any food-safety data you need. |
| Five arrangements | TQSX suction and classified; TQSF double-ply and classified A [1] [2] [3] [4] [5] | The X or F letter and the A or x2 suffix mark different builds. Quote the full code. |
| Capacity figures | Paddy and wheat rows; no rate unit printed [1] [2] [3] [4] [5] | The Chinese row 稻谷 means paddy; the English sheet says Raw rice. Ask Guangchang to state the rate unit in writing. |
| Air data | Volume, resistance and static pressure printed as separate fields [3] [4] | The classified and double-ply sheets label pressure in different ways. Ask Guangchang for one fan duty per build. |
| Double-ply drives | 0.37×2 kW vibration motors plus 1.5 kW internal fan [4] | The internal fan serves the secondary screen. Ask whether the plant still needs external aspiration. |
| Overall dimensions | Figures under a heading ending in m [1] [2] [3] [4] [5] | Request a drawing with the unit stated. Screen sizes marked mm are a separate field. |
Standard and A-series suction models
Capacity figures carry no unit on the sheet. Air volume is in m³/h and power in kW. TQSX168 prints its air volume as 8000–1000; ask Guangchang for the correct figure before sizing a fan.
| Model and capacity as printed | Air volume and motor power |
|---|---|
| TQSX56: wheat 3–3.5 | 2100–2300 m³/h; 0.55 kW. |
| TQSX85: wheat 5.5–6.3 | 3200–3400 m³/h; 0.75 kW. |
| TQSX100: wheat 6.5–7.5 | 3800–4100 m³/h; 0.75 kW. |
| TQSX125: wheat 8–9 | 6000–7500 m³/h; 1.1 kW. |
| TQSX168: wheat 10–12 | Printed as 8000–1000 m³/h; ask for the corrected value. Power 1.5 kW. |
| TQSX100A: paddy 5–7 / wheat 6–9 | 3800–4100 m³/h; 0.2×2 kW. |
| TQSX125A: paddy 7–9 / wheat 9–11 | 6000–7500 m³/h; 0.2×2 kW. |
| TQSX150A: paddy 9–10 / wheat 11–14 | 7100–9000 m³/h; 0.2×2 kW. |
| TQSX175A: paddy 10–11 / wheat 14–16 | 8800–10800 m³/h; 0.25×2 kW. |
| TQSX200A: paddy 11–14 / wheat 16–20 | 9000–12000 m³/h; 0.25×2 kW. |
| TQSX250A: paddy 14–17 / wheat 18–23 | 12500–14500 m³/h; 0.37×2 kW. |
Gravity-classified and double-ply models
The effective screen is given as length × width in mm. That is the working deck, separate from the overall machine size. Capacity figures again carry no unit.
| Model, paddy / wheat figures and screen | Air volume and motors |
|---|---|
| TQSX100x2: paddy 5–8 / wheat 10–12; screen 1200×1000 mm | 6500–7500 m³/h; 0.37×2 kW. |
| TQSX120x2: paddy 8–10 / wheat 13–18; screen 1200×1200 mm | 7500–9500 m³/h; 0.37×2 kW. |
| TQSX150x2: paddy 10–12 / wheat 18–20; screen 1200×1500 mm | 9000–12000 m³/h; 0.45×2 kW. |
| TQSX180x2: paddy 12–15 / wheat 19–23; screen 1200×1800 mm | 11000–13500 m³/h; 0.45×2 kW. |
| TQSF120x2 double-ply: paddy 7–9 / wheat 15–18 | 7200–8400 m³/h; 0.37×2 kW vibration motors plus 1.5 kW internal fan. An F model with its own figures, separate from TQSX120x2. |
TQSF classified A models
Both A groups share the suffix, but the classified A sheet prints TQSF with resistance in Pa, while suction A prints TQSX with resistance in mm H₂O. Order by the full code. The width figure is the screen width in mm.
| Model and paddy / wheat figures | Screen width, air volume, resistance and motors |
|---|---|
| TQSF80A: 4–6 / 5–7 | Width 800 mm; 6000 m³/h; resistance <1000 Pa; 0.25×2 kW. |
| TQSF85A: 4.5–6.5 / 5–7 | Width 850 mm; 7000 m³/h; <1100 Pa; 0.25×2 kW. |
| TQSF100A: 5–7.5 / 7–9 | Width 1000 mm; 8100 m³/h; <1370 Pa; 0.25×2 kW. |
| TQSF125A: 7.5–9 / 9–11 | Width 1250 mm; 12000 m³/h; <1800 Pa; 0.37×2 kW. |
| TQSF155A: 9–11 / 11–13 | Width 1550 mm; 16000 m³/h; <2200 Pa; 0.45×2 kW. |
| TQSF195A: 13–15 / 15–18 | Width 1950 mm; 21000 m³/h; <2400 Pa; 0.55×2 kW. |
Pressure figures and reference fans
A fan is chosen from volume and pressure together, measured at known points on a known duct and filter layout. On the filter end of that layout, Guangchang offers its TBLM and TBLMA pulse bag filters. The sheets print the figures below in their own fields and units.
| What the sheet prints | What to ask Guangchang |
|---|---|
| Standard suction resistance | TQSX56: 15–25 mm H₂O; 85/100/125: 40–50 mm H₂O; 168: 50–60 mm H₂O. The TQSX168 air volume still needs correcting before fan sizing. |
| Suction A resistance | 100A/125A: 40–50 mm H₂O; 150A/200A: 50–60; 175A/250A: 60. Ask for the full-system pressure your fan must meet. |
| Classified x2 | Every row prints static pressure 500–900 Pa and device resistance 1200 mm H₂O. Ask Guangchang to confirm the units and where each is measured. |
| Double-ply | Operating static pressure 600–700 Pa beside device resistance 1200 mm H₂O. The internal fan is a separate drive; ask whether external aspiration is still required. |
| Reference fans on the classified sheet | 4-72-4.5A (7.5 kW), 4-72-5A (11 kW), 4-72-5A (15 kW), 4-72-6C (17 kW, 2200 rpm), listed by ascending model. Ask for current fan curves for your duct layout. |
| Figures without units | Classified amplitude 4.5–5.5 and frequency 930 have no units, and duct diameters are marked Φ only. Ask Guangchang to state each unit. |
Check the clean grain and the stone outlet
A destoner has two outlets that both matter: clean grain should carry no stones, and the stone outlet should carry as little grain as possible. The classified sheet describes grain and heavy impurities moving in opposite directions. The double-ply sheet adds a secondary screen to send grain caught with the stones back into the clean stream. Neither sheet gives a recovery percentage or a test method.
For a trial with Guangchang, name the paddy or wheat, its moisture and impurity mix, the build and the tonnage. Check for stones left in the grain and for good grain lost with the stones. Judge the machine on both outlets together.
The classified A sheet raises a further question: what happens to grain on the deck when feed stops and restarts? Ask for a demonstration on the build you are buying. Set screen angle and air from Guangchang's current manual for that machine.
Dimensions, weight and upkeep
All five overall-dimension headings end in m while the rows hold four-digit figures. Ask for a drawing with the unit stated before planning floor space or freight. The examples below show which row each drawing should match.
| Build and printed outline | Weight and what to request |
|---|---|
| Standard TQSX100 | 1514×1124×1809 as printed; 380 kg. Standard-family weights run from 260 to 560 kg. |
| Suction TQSX125A | 1750×1500×1880 as printed; 500 kg. The 175A row prints a 1950 height, while the other A rows print 1880. |
| Classified TQSX120x2 | 1720×1516×1875 as printed; 600 kg. Effective screen 1200×1200 mm. |
| Double-ply TQSF120x2 | 2080×1740×2030 as printed; 650 kg. Ask for the layout showing the secondary-screen fan and outlets. |
| Classified TQSF125A | 1400×1470×1770 as printed; 500 kg. It has its own outline, separate from the suction 125A. |
| Supply and upkeep | Confirm the unit, inlets and outlets, duct connections, access, support loads and handling. Ask for spare-part numbers for screens, vibration motors and air path, and a maintenance schedule to back the durability and no-lubrication wording. |
Buyer questions
Are the capacity figures in tonnes per hour?
No rate unit is printed on the sheets. Ask Guangchang for a table with the unit and the grain condition stated. [1] [2] [3] [4] [5]
Is TQSF120x2 the same machine as TQSX120x2?
No. The double-ply sheet prints TQSF with an internal fan; the classified sheet prints TQSX with different figures. Order by the full code. [3] [4]
Should the TQSX168 air volume read 8000–10000?
The sheet prints 8000–1000. Ask Guangchang to confirm the correct range in writing before sizing a fan. [1]
Does the double-ply internal fan replace plant aspiration?
The sheet lists both an internal fan for the secondary screen and an aspiration volume. Ask Guangchang whether your layout needs an external fan as well. [4]
What does the patent on the classified A build cover?
The sheet cites number 8928366 with a claim of better grain holding when feed stops. Ask for the patent document and a stop-start demonstration. [5]
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.
- Standard suction-gravity stoner sheet
manufacturer · Checked 2026-10-12
TQSX56 to TQSX168 with wheat capacity, air volume, resistance, power, dimensions and weight, including the 8000–1000 air entry for TQSX168.
- A-series suction-gravity stoner sheet
manufacturer · Checked 2026-10-12
Six A models with paddy and wheat figures, air volume, resistance in mm H2O, paired motor power and weights.
- Gravity-classified stoner sheet
manufacturer · Checked 2026-10-12
Four TQSX x2 models with effective screen sizes in mm, static pressure 500–900 Pa, device resistance 1200 mm H2O, amplitude, frequency and reference fans.
- Double-ply grading-stoner sheet
manufacturer · Checked 2026-10-12
TQSF120x2 with a 1.5 kW internal fan, two 0.37 kW vibration motors, resistance and operating static pressure, and the secondary-screen description.
- A-series gravity-classified stoner sheet
manufacturer · Checked 2026-10-12
Six TQSF A models with screen width in mm, resistance in Pa and motor power, plus the patent number and feed-stop claim.
- Official grain-processing catalogue
manufacturer · Checked 2026-10-12
Shows Guangchang's destoners alongside its screens and rice separators.
- IRRI Rice Knowledge Bank: commercial milling
industry platform · Checked 2026-10-12
Describes the stages of a commercial rice mill and where de-stoning fits among them.
Report a correction through our contact form, quoting Guangchang TQSX and TQSF Gravity Stoners and the relevant specification.