Patent certificate

Serial number

Patent No

Patent name

Patent Type

Remarks

101.

ZL2013 1 0479887.2

Roots pump rotor

Patent

102.

ZL2013 1 0488072.0

Multistage Roots Pump

Patent

103.

ZL2013 1 0006450.7

Device and method for maintaining condenser vacuum of thermal power plant

Patent

104.

ZL2015 1 0477187.9

Variable internal pressure ratio screw vacuum pump

Patent

105.

ZL2015 1 0918080.3

Screw vacuum pump with dynamic sealing structure

Patent

106.

ZL2016 1 0296962.5

Roots vacuum pump performance test system and test method

Patent

107.

ZL2016 1 0257182.X

Special claw rotor profile

Patent

108.

ZL2016 1 0296944.7

Oil film type dust-removing cooler special for vacuum steelmaking and dust-removing method thereof

Patent

201.

ZL2013 2 0604863.0

Double-stage sealed roots vacuum pump

Patent

202.

ZL2013 2 0609404.1

Mechanical seal roots vacuum pump

Patent

203.

ZL2013 2 0618283.7

Two-stage three-leaf air-cooled roots vacuum pump

Patent

204.

ZL2013 2 0632966.8

MVR evaporator

Patent

205.

ZL2013 2 0640161.8

Heat Exchanger

Patent

206.

ZL2015 2 0554260.3

Roots compressor return cooling system

Patent

207.

ZL2015 2 0556628.X

Two-stage MVR evaporator

Patent

208.

ZL2015 2 0559469.9

Roots vacuum pump seal

Patent

209.

ZL2015 2 0573094.1

Rotor of trochoidal trilobal roots pump

Patent

210.

ZL2015 2 0571114.1

Rotor of involute trilobal roots pump

Patent

211.

ZL2015 2 0592626.6

Two-stage water ring compressor

Patent

212.

ZL2015 2 0592475.4

Water-cooled screw vacuum pump

Patent

213.

ZL2016 2 0285298.X

Arc type linear screw rotor for screw vacuum pump

Patent

214.

ZL2016 2 0351659.6

Rotor profile of new three-leaf roots pump

Patent

215.

ZL2016 2 0349721.8

Rotor profile of new type epicycloid screw vacuum pump

Patent

216.

ZL2016 2 0406032.6

Screw vacuum pump heat pipe cooling system

Patent

217.

ZL2016 2 0410218.9

Screw vacuum pump and water ring pump speed increasing and reducing system

Patent

218.

ZL2016 2 0408837.4

Rotary tube-type MVR concentration crystallizer

Patent

219.

ZL2016 2 0406098.5

Oil film type dust removal cooler for vacuum steelmaking

Patent

220.

ZL2017 2 1686854.5

Two-stage MVR evaporation equipment

Patent

221.

ZL2017 2 1614663.8

Two-stage MVR evaporation crystallization equipment

Patent

222.

ZL2017 2 1569105.4

Multileaf Roots pump universal line

Patent

201.

ZL2018 2 1781723.X

MVR evaporation enrichment equipment for flash defoaming

Patent

202.

ZL2018 2 1782708.7

Defoamer Defoaming MVR Evaporation Concentrator

Patent