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HomeMechanical Motor Dosing Pumps

Mechanical Motor Dosing Pumps

Mechanical Motor Dosing Pumps

A set of mechanical motor dosing pump equipped with an intelligent stroke adjuster

High Flow Mechanical Motor Dosing Pumps

Mechanical motor dosing pumps is commonly used for conveying high viscosity media. It is equipped with a spring return check valve to effectively ensure the capacity and linearity of the dosing pump when conveying high viscosity liquids. The electric stroke adjuster installed on the pump allows for precise setting and display of the pump stroke length through the adjuster operation panel. It has significantly higher flow and pressure capabilities than electromagnetic solenoid dosing pumps. Our customers can choose different dosing pumps based on their specific needs.

Specification
Working Principle
Video

Specification

NDJ type mechanical motor dosing pump
NDWS type mechanical motor dosing pump
NDWL type mechanical motor dosing pump
ND1000 type mechanical motor dosing pump
ND2000 type mechanical motor dosing pump
HND type mechanical motor dosing pump

NDJ Type

Eccentric shaft is supported by bearings in front and rear and the cantilever shaft structure of the most of manufacturers on the market is abandoned:the speed reducing motor does not bear axial force and only transmits torque, and this extends the service life of speed reducing motor and makes the process more stable.
Installation and maintenance are simple and convenient; grease is used for lubrication in the box body and grease is added conveniently, making maintenance easy.
Stroke length can be adjusted at will during running.
PVC, PVDF, PTFE and SS316 materials pump head are applicable to dose different kinds of chemical liquid.
The pure PTFE diaphragm that has a super-long service life guarantees the stability and safety of dosing.
It can be directly installed on a dosing barrel and this is economical and convenient.

A set of DFD type electromagnetic solenoid dosing pump

Technical Specifications

Table 1: NDJ Type Mechanical Motor Dosing Pump
Model		Capacity L/h		Max.Pressure Bar		Stroke Length (mm)	Diaphragm Diameter (mm)	Pump Speed (SPM)		Single-stroke Flow (ml/stroke)	Motor Power (W)
Model		50Hz	60Hz	50Hz	60Hz	Stroke Length (mm)	Diaphragm Diameter (mm)	50Hz	60Hz	Single-stroke Flow (ml/stroke)	Motor Power (W)
NDJS-	40/1.0	40	48	10	8	5	90	87	104	9.7	60
NDJS-	60/0.5	60	72	5	4	5	90	104	125	9.7	60
NDJS-	75/0.5	75	90	5	4	5	90	130	156	9.7	60
NDJS-	100/0.5	100	120	5	4	8	90	104	125	16.5	60
NDJS-	130/0.5	130	156	5	4	8	90	130	156	16.5	60
NDJS-	150/0.3	150	180	3	2.4	5	105	130	156	19.2	60
NDJL-	70/1.0	70	84	10	8	8	90	87	104	13.4	90
NDJL-	80/0.7	80	96	7	5.6	5	90	130	156	10.3	90
NDJL-	105/0.7	105	126	7	5.6	8	90	104	125	16.8	90
NDJL-	150/0.5	150	180	5	4	5	105	130	156	19.2	90

Installation Dimensional Drawing

Table 2: Pump Head Material and Size
Model	Material	A	B	C	D	E	F	Interface Size
Model	Material	A	B	C	D	E	F	Thread Size	Socket Pipe Size
NDJS-40/1.0 to NDJS-130/0.5	PVC	224	29	90	300	130	310	G1"	G1/2"-DN15
	PVDF	224	29	90	300	130	310	G1"	G1/2"-DN15
	PTFE	178	6	90	300	130	310	G1"	–
	SS316	178	6	97	302	130	310	G1"	–
NDJS-150/0.3	PVC	239	42	90	300	137	310	G1"	G1/2"-DN15
	PVDF	224	29	90	300	130	310	G1"	G1/2"-DN15
	PTFE	193	14	90	300	137	310	G1"	–
	SS316	193	14	97	302	137	310	G1"	–
NDJL-70/1.0 to NDJL-105/0.7	PVC	224	29	90	300	130	325	G1"	G1/2"-DN15
	PVDF	224	29	90	300	130	310	G1"	G1/2"-DN15
	PTFE	178	6	90	300	130	325	G1"	–
	SS316	178	6	97	302	130	325	G1"	–
NDJL-150/0.5	PVC	239	42	90	300	137	325	G1"	G1/2"-DN15
	PVDF	224	29	90	300	130	310	G1"	G1/2"-DN15
	PTFE	193	14	90	300	137	325	G1"	–
	SS316	193	14	97	302	137	325	G1"	–

NDWS Type

It is equipped with a low-pressure die-casting aluminum box with high strength, which ensures solidness and firmness, reduces the mass of the dosing pump and the weight of the overall equipment of a later stage.
The precise worm gear can make the transmission efficiency increase significantly, gain the same pressure displacement, make the motor power smaller and more energy- saving.
High quality modified PTFE diaphragm manufacturing process can make the maximum pressure of mechanical diaphragm dosing pump reach 30kg, and make the cost of dosing pump under 12–30 kg pressure system substantially decline.
The pump head of PVC, PVDF, PTFE, SS316 complete series of materials is suitable for conveying various acids, alkali, and salt solutions; non-leakage overflow structure can make sure that the process is stable and orderly.
Can be equipped with electric stroke adjuster (4–20 mA).
Various frequency motor and explosion-proof motor are optional.

Technical Specifications

Table 3: NDWS Type Mechanical Motor Dosing Pump
Model		Capacity L/h		Max.Pressure Bar		Stroke Length (mm)	Diaphragm Diameter (mm)	Pump Speed (SPM)		Single-stroke Flow (ml/stroke)	Motor Power (W)
Model		50Hz	60Hz	50Hz	60Hz	Stroke Length (mm)	Diaphragm Diameter (mm)	50Hz	60Hz	Single-stroke Flow (ml/stroke)	Motor Power (W)
NDWS-	8/1.6	8	9.6	16	12.8	2	48	118	142	1.13	180
NDWS-	12/1.6	12	14.4	16	12.8	2	48	177	212	1.13	180
NDWS-	18/1.6	18	21.6	16	12.8	2	60	118	142	2.54	180
NDWS-	24/1.6	24	28.8	16	12.8	2	60	177	212	2.3	180
NDWS-	33/1.0	33	39.6	10	8	4	90	118	142	4.7	180
NDWS-	68/1.0	68	81.6	10	8	6	90	118	142	9.6	180
NDWS-	120/0.7	120	144	7	5.6	4	105	177	212	11	180
NDWS-	143/0.6	143	171.6	6	4.8	6	105	118	142	20.1	180
NDWS-	213/0.5	213	255.6	5	4	6	105	177	212	20.1	180
NDWS-	258/0.4	258	309.6	4	3.2	10	105	118	142	36.4	180
NDWS-	386/0.3	386	463.2	3	2.4	10	105	177	212	36.4	180

Installation Dimensional Drawing

Table 4: Pump Head Material and Size
Model	Material	A	B	C	D	E	Connection
Model	Material	A	B	C	D	E	Thread Size	Socket Pipe Size
NDWS-8/1.6 to NDWS-24/1.6	PVC	95	5	70	290	150	Flexible tube φ6 × 9 or φ10 × 14	Hard tube connections
	PVDF	105	10	75	285	150
	PTFE	105	10	75	285	150
	SS316	105	10	75	285	150
NDWS-33/1.0 to NDWS-68/1.0	PVC	224	31	90	310	150	G1"	G1/2"-DN15
	PVDF	224	31	90	310	150	G1"	G1/2"-DN15
	PTFE	178	8	90	310	150	G1"	–
	SS316	178	8	97	310	150	G1"	–
NDWS-120/0.7 to NDWS-386/0.3	PVC	239	38	90	310	157.5	G1"	G1/2"-DN15
	PVDF	224	31	90	310	150	G1"	G1/2"-DN15
	PTFE	193	18	90	310	157.5	G1"	–
	SS316	193	18	97	310	157.5	G1"	–

NDWL Type

Eccentric shaft is supported by bearings in front and rear and the cantilever shaft structure of the most of manufacturers on the market is abandoned; the speed reducing motor does not bear axial force and only transmits torque, and this extends the service life of speed reducing motor and makes the process more stable.
Installation and maintenance are simple and convenient; grease is used for lubrication in the box body and grease is added conveniently, making maintenance easy.
Stroke length can be adjusted at will during running.
PVC, PVDF, PTFE and SS316 materials pump head are applicable to dosing of different kinds of chemical liquid.
The pure PTFE diaphragm that has a super-long service life guarantees the stability and safety of dosing.
Can be equipped with electric stroke adjuster (4–20 mA).
Various frequency motor and explosion-proof motor are optional.

Technical Specifications

Table 5: NDWL Type Mechanical Motor Dosing Pump
Model		Capacity L/h		Max.Pressure Bar		Stroke Length (mm)	Diaphragm Diameter (mm)	Pump Speed (SPM)		Single-stroke Flow (ml/stroke)	Motor Power (W)
Model		50Hz	60Hz	50Hz	60Hz	Stroke Length (mm)	Diaphragm Diameter (mm)	50Hz	60Hz	Single-stroke Flow (ml/stroke)	Motor Power (W)
NDWL	90/1.2	90	108	12	9.6	8	90	177	212	12.8	370
NDWL	120/1.2	120	144	12	9.6	8	105	118	142	17.1	370
NDWL	180/1.0	180	216	10	8	8	105	118	142	25.5	370
NDWL	200/0.8	200	240	8	6	7	105	177	212	28.3	370
NDWL	275/0.7	275	330	7	5.6	8	120	118	142	38.7	370
NDWL	355/0.7	355	426	7	5.6	10	120	118	142	50	370
NDWL	410/0.6	410	492	6	4.8	8	120	177	212	38.7	370
NDWL	530/0.45	530	636	4.5	3.6	10	120	177	212	50	370

Installation Dimensional Drawing

NDWL-90/1.2 to 200/0.8

NDWL-275/0.7 to 530/0.45

Table 6: Pump Head Material and Size
Model	Material	A	B	C	D	E	Connection
Model	Material	A	B	C	D	E	Thread Size	Socket Pipe Size
NDWL-90/1.2	PVC	224	35	97	340	175	G1"	G1/2"-DN15
	PVDF	224	35	97	340	175	G1"	G1/2"-DN15
	PTFE	178	11	97	345	175	G1"	–
	SS316	178	11	97	345	175	G1"	–
NDWL-120/1.2 to NDWL-180/1.0	PVC	248	45	97	345	175	G1"	G1/2"-DN15
	PVDF	248	45	97	345	175	G1"	G1/2"-DN15
	PTFE	193	25	97	350	175	G1"	–
	SS316	193	25	97	350	175	G1"	–
NDWL-270/0.7 to NDWL-530/0.45	PVC	259	51	102.5	340	175	G1"	G1/2"-DN15
	PVDF	259	51	102.5	340	175	G1"	G1/2"-DN15
	PTFE	213	28	102.5	340	175	G1"	–
	SS316	213	28	110	340	175	G1"	–

ND1000 Type

Motor-driven diaphragm assembly is of simple operation and easy maintenance that the pump head won't leak.
The operation is smooth and steady, and the noise is much low.
The high precision and high strength transmission components can make the dosing pump efficiently output, at the same time, its maintenance cost is ultra-low.
High quality modified PTFE diaphragm assembly can greatly improve the lifespan of the diaphragm, making it not easy to become a wearing part.
PVC, PVDF, PTFE and SS316 materials pump head are applicable to dose different kinds of chemical liquids.
Can be equipped with electric stroke adjuster (4–20 mA).
Various frequency motor and explosion-proof motor are optional.

A set of ND1000 mechanical motor dosing pump

Technical Specifications

Table 7: ND1000 Type Mechanical Motor Dosing Pump
Type	Model		Capacity (L/H)	Maximum Pressure (bar)	Stroke Length (mm)	Diaphragm Diameter (mm)	Pump Speed (SPM)	Single-stroke Flow (ml/stroke)	Motor Power (W)
ND1000	ND1000	660/0.5	660	5	10	160	118	93	750
	ND1000	1000/0.4	1000	4	10	160	177	93	750
	ND1000	1200/0.3	1200	3	12	160	177	113	750

Installation Dimensional Drawing

Table 8: Pump Head Material and Size
Model	Material	A	B	C	D	E	Connection
ND1000-660/0.5 to ND1000-1200/0.3	PVC	340	90	120	370	197	G2-1/4"-DN40
	PVDF	340	90	120	370	197	G2-1/4"-DN40
	PTFE	340	90	120	370	197	G2-1/4"-DN40
	SS316	340	95	125	370	197	G2-1/4"-DN40

ND2000 Type

The high-strength casting aluminum box body is used and it is sturdy and durable, and moreover, total weight is reduced greatly.
The motor directly drives the eccentric shaft and the spring return structure is used; the structure is simple, stable and easy to maintain.
The damping sliding bar structure is applied to overcome the vital shortcomings: large pipe shock, excessive mechanical vibration, parts damage, poor flow linearity and high noise, arising from invalid eccentric travel.
High-quality modified PTFE diaphragm assembly is durable and the lift of dosing pump is greatly increased.
PVC,PVDF, PTFE and SS316 materials pump head are applicable to dose different kinds of chemical liquids.
Can be equipped with electric stroke adjuster (4–20 mA).
Various frequency motor and explosion-proof motor are optional.

A set of ND2000 mechanical motor dosing pump

Technical Specifications

Table 9: ND2000 Type Mechanical Motor Dosing Pump
Model		Capacity L/h		Max.Pressure Bar		Stroke Length (mm)	Diaphragm Diameter (mm)	Pump Speed (SPM)		Single-stroke Flow (ml/stroke)	Motor Power (W)
Model		50Hz	60Hz	50Hz	60Hz	Stroke Length (mm)	Diaphragm Diameter (mm)	50Hz	60Hz	Single-stroke Flow (ml/stroke)	Motor Power (W)
ND2000	500/1.0	500	600	10	8	8	155	200	240	42	750
ND2000	700/0.9	700	840	9	7.2	10	155	200	240	58	750
ND2000	1000/0.6	1000	1200	6	4.8	12	160	200	240	83	750
ND2000	1300/0.4	1300	1560	4	3.2	14	160	200	240	108	750
ND2000	1600/0.3	1600	1920	3	2.4	15	160	200	240	135	750
ND2000	2000/0.3	2000	2400	3	2.4	16	160	200	240	166	750

Installation Dimensional Drawing

Table 10: Pump Head Material and Size
Model	Material	A	B	C	D	Connection
ND2000-500/1.0 to ND2000-1000/0.6	PVC	340	51	102.5	340	G2-1/4"-DN40
	PVDF	340	51	102.5	340	G2-1/4"-DN40
	PTFE	340	28	102.5	340	G2-1/4"-DN40
	SS316	340	28	110	340	G2-1/4"-DN40
ND2000-1300/0.4 to ND2000-2000/0.3	PVC	460	120	140	580	G2-1/4"-DN40
	PVDF	460	120	140	580	G2-1/4"-DN40
	PTFE	460	120	140	580	G2-1/4"-DN40
	SS316	460	90	147	580	G2-1/4"-DN40

HND Type

The diaphragm is mechanically driven and spring returned, and the structure is simple and easy to maintain.
High-quality modified diaphragm assembly with maximum pressure of 30 bar can replace low pressure hydraulic diaphragm dosing pumps in a part of application places, greatly reducing the user's initial input cost.
In the post-maintenance, because there is no hydraulic oil chamber and other hydraulic assemblies, the maintenance become very simple. As the high-quality modified PTFE diaphragm assembly is applied, extending the service life of the diaphragm and reducing the post-maintenance cost greatly.
Application of damping sliding bar makes the dosing pump run smoothly, with extremely low noise.
PTFE elastic component and one-way valve are optional and the high-viscosity corrosive liquid can be conveyed; outlet end has back pressure.
Can be equipped with electric stroke adjuster (4–20 mA).
Various frequency motor and explosion-proof motor are optional.

A set of HND mechanical motor dosing pump

Technical Specifications

Table 11: HND Type Mechanical Motor Dosing Pump
Model		Capacity L/h		Max.Pressure Bar		Stroke Length (mm)	Diaphragm Diameter (mm)	Pump Speed (SPM)		Single-stroke Flow (ml/stroke)	Motor Power (W)
Model		50Hz	60Hz	50Hz	60Hz	Stroke Length (mm)	Diaphragm Diameter (mm)	50Hz	60Hz	Single-stroke Flow (ml/stroke)	Motor Power (W)
HND	47/3.0	47	56.4	30	24	4	90	118	142	6.6	370
HND	70/2.0	70	84	20	16	4	90	177	212	6.6	370
HND	115/1.8	115	138	18	14.4	6	105	118	142	16.2	750
HND	135/1.6	135	162	16	12.8	7	105	118	142	19	750
HND	160/1.2	160	192	12	9.6	8	105	118	142	22.6	750
HND	330/1.0	330	396	10	8	7	120	118	142	31.1	750
HND	400/0.8	400	480	8	6.4	6	120	177	142	37.7	750

Installation Dimensional Drawing

Table 12: Pump Head Material and Size
Model	Pump head	A	B	C	D	E	Connection
Model	Pump head	A	B	C	D	E	Threaded	Socket Pipe
HND-47/3.0 to HND-70/2.0	SS316	178	10	105	334	157	G1"	G1/2"-DN15
HND-115/1.8 to HND-160/1.2	SS316	193	18	105	335	166	G1"	G1/2"-DN15
HND-330/1.0 to HND-400/0.8	PVC	259	51	102.5	345	175	G1"	G1/2"-DN15
	PVDF	259	51	102.5	345	175	G1"	G1/2"-DN15
	PTFE	213	28	102.5	350	175	G1"	–
	SS316	213	28	110	350	175	G1"	–

Working Principle

The motor drives the helical gear reduction box connected with the main shaft to form a reduction mechanical structure. The bearing performs eccentric motion on the eccentric circle of the eccentric shaft, the generated eccentric distance is converted into linear motion of the push road. The push rod drives the diaphragm to do linear reciprocating motion with the cooperation of the restoring force of the spring.

When the push rod pulls the diaphragm to move backward, the volume between the diaphragm and the pump head increases to generate negative pressure. The one-way valve of the suction pipeline opens, and the medium in the inlet pipeline enters the cavity of the pump head. When the suction stroke ends, the diaphragm movement stops instantly, the pressure in the pump head is balanced with the pressure in the inlet pipe, and the one-way valve of the suction port is reset. During the discharge stroke, the diaphragm connected with the slide bar moves forward. When the pump head pressure is higher than the outlet pressure, the outlet check valve is opened, the medium in the pump head enters the discharge line. When the discharge stroke ends, the diaphragm movement stops again, the pressure in the pump head is equal to the outlet pressure, and the outlet check valve resets, and then enters the next cycle.