ZJP series roots vacuum pump with overflow valve (referred to as the roots pump hereinafter) are positive displacement pumps with two symmetrically shaped impellers, shaped like the figure “8”, rotate in opposite directions inside the pump housing. Roots pump are generally used to increase the pumping speed and/or to reach a higher end-vacuum on the pump system.
Roots pumps are able to run at high rotation speed, as high as 1500~3000rpm, as the impellors are rotating non-contact. Due to the high rotation speed it is possible to have a high pumping speed with a relative small sized pump. It is possible to pump high quantities of gas in combination with a relative small backing pump. The energy consumption of such a system is much lower than of a single backing pump with the same pumping speed.
The by-pass valve is mounted between the inlet and the exhaust and controls the pressure difference by opening and closing the by-pass valve by gravity. When the pressure difference between the inlet and exhaust is too high the by-pass valve will open and protects the Roots pump from overheating. This way it is possible to run the Roots pump at the same time that the backing pump starts and achieving the maximum pumping speed, also at higher pressures.
There are two kinds of vacuum pumps, corrosion and anti-corrosion. The anti-corrosion roots vacuum pump is coated with Teflon or Ni-p by customer’s request. Also clients can choose skeleton oil seal or five point type oil seal by there own will.
, Characteristics of the equipment: The TC type of vacuum unit series, it made of anti-corrosion PP tank, buffer tank, RPP water pump, check valve, the structure compact, low energy consumption, high vacuum level, and removable. , Using Attention: 1, The equipment should be installed on the flat and solid foundation, to ensure the equipments' service intensity. 2, The tank should be filled with water before starting up ,and need to open water pump inlet valve. The water pump prohibits to idling in dehydration and inversion so that to prevent the water resource to damage. 3. When using circulating water tank should be offent to added the cooling water and replace the circulating water, to lower the working temperature, to protect the circulating water have the particles sundry. 4, When equipments downtime, it should be shut off the steam valve, and stop the roots vacuum pump, open the emptying valve of vacuum tank ,to reduce the degree of vacuum. Then stop working. Otherwise to make it to suck-back and to damage equipment.
Supplier: Rotary vane vacuum pump, roots vacuum pump, oil free piston vacuum pump, dry screw vacuum pump, dry claw type vacuum pump
JZJX type Roots-vane vacuum system consists of the major pump i.e ZJ type Roots vacuum pump and the backing pump i.e. vane vacuum pump.The system has the specificity of high vacuum degree and wide pumping-speed range,and it is more fit to pump dry and clean gas. Now,the series vacuum systems are already widely used in the trade of metallurgy,chemical industry,light industry,petroleum industry,medicine,printing and dyeing,wiring,electronic vacuum,semiconductor,grocery,atomic energy and spinning etc.
JZJ2S type Roots-water ring vacuum system consists of the major pump i.e. ZJ type Roots vacuum pump and the backing pump i.e. two stage water ring vacuum pump. It can pump not only the common gas but also the gas that contains vapor and a little dust. Compared with the common mechanical vacuum pump and water ring vacuum pump, it has some advantages as follows: it can endure the oil,vapor and tiny dust,its ultimate vacuum is high and its pumping speed in higher vacuum is great,so it is a kind of ideal vacuum-obtaining equipment for drying,dehydrating and gas-expelling in the trade of light-spinning,grocery and chemical industry etc..
JSKA type water-ring vacuum pump whole-set equipment has the peculiarities of reliableness,high efficiency,energy-saving and high automatication degree etc..The major pump adopts the SKA type pump with automatic gas-intake system,water cooling and supplying circularly system and dynamic-transmitting system.The electricity controlling system can be manual,automatical or remote controlled. It is the primary suction equipment of the vaporcoagulators for the domestic and foreign fire power generating electricity system above 600MW,300MW and 100MW.
This kind of pumps has the specialties as follows: 1)If there isn’t vapor to generate, You can turn off the adulterating-gas valve to increase the vacuum degree. 2) The improvement of the adulterating-gas valve can make the pump have adequate adulterating gas amount as pumping vapor, so the cogulable gas can be eliminated timely and the pump oil can be prevented from being lactic. 3) It is installed with the device that can make oil revival in which the oil,water and vapor can be frozen and separated, so the oil can be cleaned in time, and be used repeatedly,therefore, the working time of the pump is prolonged and the working reliability is increased.
This series of vacuum pumps can be used by themselves or as the backing pumps of the Roots pumps,diffusion pumps,molecule pumps and titanium pumps.With the adulterating-gas valve,the pumps can suck a little coagulable gas,humid air or the mixture of gas and vapor,but which can not contain particle-shaped solid matter.
W series of pumps adopt the circle-shaped stationary valve and its ultimate pressure (absolute pressure) is lower than 2600Pa,while the WY series of pumps adopt stripe-shaped moving valves,and it’s ultimate pressure is lower than 1300Pa? This series of pumps are principally used in the trade of chemical industry,medicine-manufacturing,light industry, architecture material and wiring etc..We also serve the no-oil pumps according to the demand of user.
WL series of standing reciprocating vacuum pumps are the renewed products based on the primeval W series of lying ones.Compared with the W series of ones, they have the specialty as follows: 1) The gas valves are installed on the cover and neck of the cylinder(the W series ones are on the body of the cylinders),so it can increase the area of cooling water.The process of compressing gas is approximately isothermal,so it can decrease the loss of power and can save energy by 10%~15%.The area it holds can decrease by 1/2. 2) The piston of the lying reciprocating vacuum pump will go down because of the weight of itself ,so it will be worn away unsymmetrically. The WL series of ones improved this shortcoming,it can decrease the wearing away of the moving units as piston and connecting pole; 3) We can serve the no-oil WL series of standing reciprocating pumps.
