Polyurethane-Insulated Gear Pump
The pump features an integrated thermal insulation jacket, 316 stainless steel wetted parts, and high-precision meshing gears. This design maintains a constant temperature-preventing the adhesive from cooling, thickening, crystallizing, or solidifying and clogging the pump chamber-while ensuring precise, constant-volume metering. It is widely used in production lines for polyurethane foaming, composite coating, automotive adhesive application, panel edge banding, and resin casting.
The pump casing is cast as a single, hollow-jacketed unit featuring dedicated inlet and outlet ports for thermal oil, high-temperature steam, or hot water. The circulating heating medium fully envelops the flow chambers, gear cavity, and inlet/outlet passages, maintaining a constant temperature around the polyurethane material throughout the system. This sustained thermal insulation during shutdowns prevents the material from cooling, solidifying, or adhering to the walls and clogging the pump, thereby eliminating the need for frequent disassembly and cleaning.
Applicable Media
Hot-melt PUR (polyurethane) adhesive; two-component AB polyurethane foaming adhesive
Polyurethane polyol; MDI/TDI isocyanate curing agents
Solvent-based polyurethane resin; polyurethane flooring adhesive; laminating adhesive
Suitable for the constant-temperature transfer of polyurethane-related solvents such as DMAC and DMA
Typical Technical Parameters (Example: 32cc/rev model)
Displacement per revolution: 32 cc/rev
Metering accuracy: ≤±0.3%
Pump body material: 316 stainless steel (wetted parts)
Heating medium: Thermal oil / Steam / Hot water
Operating temperature: 40–220°C
Viscosity range: 1,000–1,000,000 mPa·s
Maximum discharge pressure: 16 MPa
Industry Applications
Polyurethane Foaming: Metered delivery and proportioning of A/B components for refrigerators, panels, and pipe insulation layers
Composite Coating: Metering and feeding for polyurethane coatings on leather, films, and non-woven fabrics
Woodworking & Furniture: PUR hot-melt adhesive for edge banding; delivery of polyurethane adhesives for panel bonding
Automotive Manufacturing: Metered supply of polyurethane sealants and structural adhesives for automated dispensing
Construction & Flooring: Constant-temperature delivery of polyurethane flooring resins and waterproof coatings
Performance parameter table
|
type |
Single rotation displacement(cc/rev) |
Rated flow rate at maximum speed(L/min) |
Maximum speed (rpm) |
Inlet/outlet dimension |
|
ES158 |
1.58 |
1.5 |
980 |
G1/2" |
|
ES253 |
2.53 |
2.4 |
980 |
G1/2" |
|
ES348 |
3.48 |
3.4 |
980 |
G1/2" |
|
ES475 |
4.75 |
4.6 |
980 |
G1/2" |
|
ES712 |
7.12 |
6.9 |
980 |
G1/2" |
|
ES950 |
9.50 |
9.3 |
980 |
G1/2" |
|
EM142 |
14.2 |
10.2 |
720 |
G3/4" |
|
EM214 |
21.4 |
15.4 |
720 |
G1" |
|
EM320 |
32.0 |
23.0 |
720 |
G1" |
|
EM380 |
48.1 |
20.9 |
550 |
G1 1/4" |
|
EM600 |
60.0 |
33.0 |
550 |
G1 1/2" |
|
EM800 |
80.0 |
38.4 |
480 |
G1 1/2" |
|
EL108 |
108.0 |
51.8 |
480 |
G1 1/2" |
|
EL160 |
160.0 |
64.0 |
400 |
flange φ50 |
|
EL240 |
240.0 |
96.0 |
400 |
flange φ50 |
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