Overview of G-type handwheel speed regulation continuously variable single screw pump

The G-type single screw pump is made of various elastic materials for the stator, so this pump has characteristics that general pump types cannot handle for conveying high viscosity up to 80% in the pump industry and conveying media containing hard suspended particles or fiber media. Its flow rate is proportional to the rotational speed and is widely used in industrial sectors such as food metallurgy, papermaking, printing and dyeing, chemical industry, fertilizer and pharmaceuticals Transmission can be achieved through direct coupling or by using high-speed motors, V-belts, gearboxes, and other devices for variable speed.

The significance of the G-type handwheel speed regulation continuously variable single screw pump model

　　

Characteristics of G-type handwheel speed regulation continuously variable single screw pump

The pump has few parts, compact structure, small volume, and simple maintenance. The rotor and stator are vulnerable parts of a single screw pump, and the structure is simple and easy to assemble and disassemble. It is a type of pump that operates based on the principle of rotary meshing displacement. The main working components are eccentric screws (rotor) and fixed bushings (stator). Using non-toxic and odorless edible rubber, the working temperature can reach 120 degrees Celsius. If using high temperature of 120-350 degrees Celsius, please contact our unit. Due to the special geometric opening of these two components, they form separate sealed chambers. The medium flows uniformly in the axial direction. The internal flow rate is reduced while the volume remains unchanged. The pressure is stable, so there will be no product turbulence or agitation. The output pressure of each stage pump is 0.6MPa-1.2MPa, with a head of 60m-120m (for clean water), and the self-priming height is generally above 3m.

Application scope of G-type handwheel speed regulation continuously variable single screw pump

As a universal pump, the flow rate of screw pump can be adjusted by changing the speed according to requirements. The operating speed can be high or low, and the outlet pressure can increase with the number of pump stages. For each additional stage, the pressure increases by 0.6MPA. It is widely used in the following ranges and industries;

1. Environmental protection: transportation of industrial wastewater, domestic wastewater, and sewage containing solid particles and short fibers, especially suitable for equipment such as oil-water separators and plate and frame filter presses;

2. Shipbuilding industry: transportation of sewage media such as ship cleaning, oil-water, oil residue, and oily wastewater;

3. Petroleum industry: transporting crude oil, mixtures of crude oil and water, mixtures of coalfield gas and water, injecting polymers into the formation, etc., thereby reducing the cost of mechanical oil recovery and coal mining, and increasing oil recovery rate;

4. Medicine and daily chemical products: transportation of viscous slurries, emulsions, and various ointments and cosmetics;

5. Food canning industry: transportation of various fermented viscous starches, cooking oils, honey, syrups, fruit pulp, cream, minced fish meat, and their by-products

6. Brewing industry: various fermented viscous liquids, concentrated distiller's grains, grain product residues, various sauces, slurries, and mucilages containing fast solids;

7. Construction industry: spraying and conveying of cement mortar, lime slurry, coatings, and other paste like materials;

8. Mining industry: Groundwater and slurry containing solid particles in mines are discharged to the surface;

9. Chemical industry: various suspensions, oils, various colloidal slurries, various adhesives;

10. Printing industry: transportation of high viscosity ink, PVC polymer plastic paste for wallpaper, and various concentrations of pulp and short fiber pulp;

11. Industrial boilers: power plants, transportation of coal water slurry.

Natural rubber has high elasticity, excellent tear resistance, and good wear resistance, making it the preferred material for stators. However, its poor oil and solvent resistance, low resistance to acid and alkali corrosion, and low heat resistance limit its application. Use temperature within 60 ℃. Nitrile rubber has particularly good resistance to gasoline and fatty hydrocarbon oils, with good heat resistance and wear resistance. Its elasticity is lower than natural rubber, and its acid and alkali resistance is average. It is a stator material with the same usage rate as natural rubber. Use temperature within 90 ℃. Silicone rubber is non-toxic and odorless, mainly used in hygiene requirements such as food and pharmaceutical industries. The price is relatively expensive. It has high stability towards thermal oxidation and ozone, and high chemical inertness. Use temperature within 100 ℃. Fluorine rubber is resistant to acid and alkali, and oil resistance is one of the properties of oil resistant rubber; Excellent resistance to chemical corrosion, ozone, and atmospheric aging. The price is expensive. Mainly used in areas with high corrosion. Solvent rubber does not swell or swells very slightly in organic solvents. Convert to the development of transporting organic solvents.

The G series single screw pump is an internal meshing rotary displacement pump. This pump has the advantages of high efficiency, strong self-priming ability, and wide applicability, and can be used to transport various difficult to transport media. Therefore, single screw pumps are known as universal pumps abroad. This pump can transport neutral or corrosive liquids, clean or abrasive liquids, liquids containing gases or prone to bubble formation, high viscosity or low viscosity liquids, including liquids containing fibers and solid substances.

Working principle and characteristics of G-type handwheel speed regulation continuously variable single screw pump

The working principle of a single screw pump is that when the rotor of a single helix rotates around the stator axis in the stator hole of a double helix, the closed chamber formed between the rotor and stator pair continuously, uniformly, and with a constant volume transports the medium from the suction end to the discharge end. Due to its clever working principle, the single screw pump has the universal performance of a general pump. Its notable features are:

1. Can transport high viscosity media. Depending on the size of the pump, the high viscosity of the medium ranges from 37000 centipoise to 200000 centipoise.

2. Can transport media containing solid particles, grinding particles, and fibers. Its content can generally reach up to 40% of the medium, and when the solid in the medium is fine particles in powder form, it can reach up to 70%. Depending on the size of the pump, the particle size of the solid particles in the medium can be as large as 2 millimeters to 40 millimeters.

3. The output liquid is continuous and uniform, with stable pressure and minimal agitation, and will not change the composition of sensitive liquids.

4. There is a simple proportional relationship between flow rate and rotational speed. The flow rate can be adjusted by adjusting the speed, and coupled with a variable speed electric motor, it can become a variable displacement pump.

5. The pressure can be automatically adjusted according to the resistance of the output pipeline. Between 0-36 (kg/cm2) pressure, users can easily adjust to the desired pressure. This not only saves energy, but also avoids the impact of high or low pressure on the process flow.

6. Simple structure, minimal wear and easy maintenance.

Compared to other types of pumps:

Compared with centrifugal pumps, single screw pumps do not require valves and have a stable linear flow rate.

Compared with plunger pumps, single screw pumps have better self-priming ability, with a suction height of up to 8.5 meters of water column.

Compared with diaphragm pumps, single screw pumps can transport various mixed impurities, media containing gases and solid particles or fibers, as well as various corrosive substances.

Compared with gear pumps, single screw pumps can transport high viscosity substances.

Unlike plunger pumps, diaphragm pumps, and gear pumps, single screw pumps can be used for drug filling and metering.

Application scope of G-type handwheel speed regulation continuously variable single screw pump

The G series single screw pumps can be divided into the following three types based on their materials:

1. Ordinary pump:

Main application scope: Ideal conveying pump for oil-water separation device, conveying pump for sewage treatment device; Delivery pump of spray device; Incinerator conveying pump; Sewage and fecal transportation; Transportation of lubricating oil, fuel oil, and vegetable oil; The suction and transportation of sediment paste with solid particle media, and the transportation of mud by petroleum and water texture geophysical exploration drilling rigs; Transportation of wet spun paste like asbestos slurry; Transportation of viscous ink, clay, clay paste, and pulp; There are also pumps used for transporting special materials such as concrete, explosives, coal water slurry, kaolin, and fiber liquids.

2. Food pump: (made of stainless steel and non-toxic rubber material)

Main application scope: Brewing, undiluted beer sprouts, hops, milk powder, malt extract, starch, tomato sauce, soy sauce, fermentation broth, mash, honey, chocolate mixture, milk, cream, cheese, and meat pulp, etc. It can also be used in the pharmaceutical industry and toothpaste industry for suction and transportation.

3. Chemical pump: (using corrosion-resistant stainless steel and corrosion-resistant rubber materials)

Main application scope: Corrosive petroleum, chemical media, pigments, thick paints, cosmetics, ointments

Common types of motors for single screw pumps:

1) Driven by elastic coupling and Y (or YB) motor, or driven by elastic coupling and variable frequency speed control motor;

2) Driven by elastic coupling and fixed reduction motor or directly connected motor with reducer;

3) Driven by elastic coupling and continuously variable speed motor;

4) Driven by a belt (synchronous belt) motor;

model	internet traffic (m3/h)	pressure (Mpa)	allow High RPM (r/min)	electrical machinery power (kw)	Necessary gas Corrosion allowance (m)	Import Law Lantong diameter (mm)	Export Law Lantong diameter (mm)	Allow particles Particle diameter (mm)	Allow fiber Dimension length (mm)
G20-1	0.8	0.6	960	0.75	4	25	25	1.5	25
G20-2		1.2		1.5
G25-1	2	0.6	960	1.5		32	25	2	30
G25-2		1.2		2.2
G30-1	5	0.6	960	2.2		50	40	2.5	35
G30-2		1.2		3
G35-1	8	0.6	960	3		65	50	3	40
G35-2		1.2		4
G40-1	12	0.6	960	4		80	65	3.8	45
G40-2		1.2		5.5
G50-1	20	0.6	960	5.5	4.5	100	80	5	50
G50-2		1.2		7.5
G60-1	30	0.6	720	11	5	125	100	6	60
G60-2		1.2		15
G70-1	45	0.6	720	11		150	125	8	70
G70-2		1.2		18.5
G85-1	65	0.6	630	15		150	150	10	80
G85-2		1.2		30
G105-1	100	0.6	500	30		200	200	15	110
G105-2		1.2		55
G135-1	150	0.6	400	45		250	250	20	150
G135-2		1.2		90

Single stage, performance parameters for gear shifting, electromagnetic speed regulation motor with gear shifting, or continuously variable speed motor with gear shifting

model	Pressure 0.3Mpa			Pressure 0.6Mpa			Adjustable RPM
	number of rotations (r/min)	internet traffic (m3/h)	motor power (kw)	number of rotations (r/min)	internet traffic (m3/h)	motor power (kw)	number of rotations (r/min)	internet traffic (m3/h)	motor power (kw)
G20-1	960	0.96	0.75-6 levels	960	0.8	0.75-6 levels	125~1250	0.1～1.5	1.1
	720	0.8	0.55-8 levels	720	0.5	0.75-8 levels
	510	0.4	0.55-4 levels/gearbox	510	0.3	0.75-4 levels/gearbox
G25-1	960	2.4	0.75-6 levels	960	2	Levels 1.5-6	125~1250	0.1～3	1.5
	720	1.5	0.55-8 levels	720	1.27	Levels 1.1-8
	510	1.08	0.55-4 levels/gearbox	510	0.9	1.1-4 levels/gearbox
G30-1	960	3.6	Levels 1.5-6	960	3	Level 2.2-6	125~1250	0.2～4	2.2
	720	2.28	Levels 1.1-8	720	1.9	Levels 1.5-8
	510	1.63	1.1-4 levels/gearbox	510	1.35	1.5-4 levels/gearbox
G35-1	720	4.8	Level 2.2-8	720	4.04	Level 3-8	125~890	0.3～5	3
	510	3.36	1.5-4 levels/gearbox	510	2.8	2.2-4 levels/gearbox
	380	1.92	1.1-4 levels/gearbox	380	1.60	1.5-4 levels/gearbox
G40-1	510	6.8	2.2-4 levels/gearbox	510	5.6	3-4 levels/gearbox	125~890	0.3～10	4
	380	5.1	1.5-4 levels/gearbox	380	4	2.2-4 levels/gearbox
	252	2.65	1.1-6 levels/gearbox	252	2.2	1.5-6 levels/gearbox
G50-1	510	13.8	4-4 levels/gearbox	510	11.5	5.5-4 levels/gearbox	80~750	1~18	5.5
	380	10.2	4-4 levels/gearbox	380	7.5	5.5-4 levels/gearbox
	252	5.6	3-6 levels/gearbox	252	4.4	5.5-6 levels/gearbox
G60-1	510	20.8	7.5-4 levels/gearbox	510	16	11-4 levels/gearbox	63~630	1~20	11
	380	15.6	7.5-4 levels/gearbox	380	12	11-4 levels/gearbox
	252	7.8	5.5-6 levels/gearbox	252	6	7.5-6 levels/gearbox
G70-1	510	26	11-4 levels/gearbox	510	20	11-4 levels/gearbox	56~560	1~22	11
	380	17	7.5-4 levels/gearbox	380	13	11-4 levels/gearbox
	252	9.1	7.5-6 levels/gearbox	252	7	7.5-6 levels/gearbox
G85-1	380	32	11-4 levels/gearbox	380	25	15-4 levels/gearbox	37~370	2~24	15
	252	21	7.5-6 levels/gearbox	252	16	11-6 levels/gearbox
	189	11	5.5-8 levels/gearbox	189	8	11-8 levels/gearbox
G105-1	380	80	15-4 levels/gearbox	380	65	22-4 levels/gearbox	29~290	3~50	22
	252	44	15-6 levels/gearbox	252	34	22-6 levels/gearbox
	189	29	11-8 levels/gearbox	189	22	15-8 levels/gearbox
G135-1	380	132	37-4 levels/gearbox	380	120	45-4 levels/gearbox	18~180	3~56	45
	252	95	30-6 levels/gearbox	252	80	37-6 levels/gearbox
	189	65	18.5-6 levels/gearbox	189	53	30-8 levels/gearbox

Dual stage, performance parameters for gear shifting, electromagnetic speed regulation motor with gear shifting, or continuously variable speed motor with gear shifting

model	Pressure 0.8Mpa			Pressure 1.2Mpa			Adjustable RPM
	number of rotations (r/min)	internet traffic (m3/h)	motor power (kw)	number of rotations (r/min)	internet traffic (m3/h)	motor power (kw)	number of rotations (r/min)	internet traffic (m3/h)	motor power (kw)
G20-2	960	0.96	Levels 1.5-6	960	0.8	Levels 1.5-6	125~1250	0.1～1.5	1.5
	720	0.8	Levels 1.1-8	720	0.5	Levels 1.5-8
	510	0.4	1.1-4 levels/gearbox	510	0.3	1.1-4 levels/gearbox
G25-2	960	2.4	Levels 1.5-6	960	2	Level 2.2-6	125~1250	0.1～3	2.2
	720	1.5	Levels 1.1-8	720	1.27	Levels 1.5-8
	510	1.08	1.1-4 levels/gearbox	510	0.9	1.5-4 levels/gearbox
G30-2	960	3.6	Levels 3-6	960	3	Levels 3-6	125~1250	0.2～4	3
	720	2.28	Levels 1.5-8	720	1.9	Level 2.2-8
	510	1.63	1.5-4 levels/gearbox	510	1.35	2.2-4 levels/gearbox
G35-2	720	4.8	Level 3-8	720	4.04	Level 4-8	125~890	0.3～5	4
	510	3.36	2.2-4 levels/gearbox	510	2.8	3-4 levels/gearbox
	380	1.92	1.5-4 levels/gearbox	380	1.60	2.2-4 levels/gearbox
G40-2	510	6.8	4-4 levels/gearbox	510	5.6	5.5-4 levels/gearbox	125~890	0.3～10	5.5
	380	5.1	3-4 levels/gearbox	380	4	4-4 levels/gearbox
	252	2.65	2.2-6 levels/gearbox	252	2.2	3-6 levels/gearbox
G50-2	510	13.8	5.5-4 levels/gearbox	510	11.5	7.5-4 levels/gearbox	80~750	1~18	7.5
	380	10.2	4-4 levels/gearbox	380	7.5	5.5-4 levels/gearbox
	252	5.6	3-6 levels/gearbox	252	4.4	5.5-6 levels/gearbox
G60-2	510	20.8	15-4 levels/gearbox	510	16	15-4 levels/gearbox	63~630	1~20	15
	380	15.6	11-4 levels/gearbox	380	12	15-4 levels/gearbox
	252	7.8	7.5-6 levels/gearbox	252	6	11-6 levels/gearbox
G70-2	510	26	15-4 levels/gearbox	510	20	18.5-4 levels/gearbox	56~560	1~22	18.5
	380	17	11-4 levels/gearbox	380	13	15-4 levels/gearbox
	252	9.1	11-6 levels/gearbox	252	7	11-6 levels/gearbox
G85-2	380	32	18.5-4 levels/gearbox	380	25	22-4 levels/gearbox	37~370	2~24	22
	252	21	15-6 levels/gearbox	252	16	18.5-6 levels/gearbox
	189	11	15-8 levels/gearbox	189	8	15-8 levels/gearbox
G105-2	380	80	30-4 levels/gearbox	380	65	37-4 levels/gearbox	29~290	3~50	37
	252	44	30-6 levels/gearbox	252	34	30-6 levels/gearbox
	189	29	22-8 levels/gearbox	189	22	22-8 levels/gearbox
G135-2	380	132	55-4 levels/gearbox	380	120	75-4 levels/gearbox	18~180	3~56	75
	252	95	55-6 levels/gearbox	252	80	75-6 levels/gearbox
	189	65	37-8 levels/gearbox	189	53	45-8 levels/gearbox

Performance parameters of single-stage and two-stage coal water slurry working pumps

Pump type	internet traffic (m3/h)	Work pressure (Mpa)	Rotation speed (r/min)	Gear reduction matching speed regulating motor (kw)
G30-2	~1	1.2	30~300	YCT160/4A-2.2
G35-2	~2	1.2	30~300	YCT160/4A-2.2
G40-2	~3	1.2	30~280	YCT160/4A-3
G50-1	~4.5	0.6	28~280	YCT180/4A-4
G50-2	~4.5	1.2	28~280	YCT200/4A-5.5
G60-1	~6.5	0.6	25~250	YCT200/4A-5.5
G60-2	~6.5	1.2	25~250	YCT200/4B-7.5
G70-1	~8	0.6	25~250	YCT200/4B-7.5
G85-1	~12.5	0.6	18~180	YCT225/4A-11
G105-1	~20	0.6	14~140	YCT225/4B-15
G135-1	~35	0.6	10~100	YCT250/4B-22

G-type handwheel speed regulation continuously variable single screw pump instructions

1. The above performance parameters are experimental data obtained during the room temperature water test;

2. For different media and speeds, performance parameters will vary, with flow rate values inversely proportional to concentration and viscosity, and directly proportional to speed;

3. Users must choose the type of pump based on usage requirements, the condition of the conveying medium, and selection principles, or consult with our company's technical department to determine the type of pump.

4. For water coal slurry pumps, the transmission form is gear speed regulation matched with electromagnetic speed regulation motors or mechanical continuously variable speed motors, and the flow rate is infinitely adjustable with the change of speed.