XD series vacuum pump

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XD series vacuum pumps

XD series vacuum pumps are available for low and medium vacuum fields, which are mainly used for pumping air and other dry gases rather than corrosive, toxic, flammable and explosive gases. Furthermore, they cannot pump the gases containing tiny particles or dust and cannot transport other small objects.

XD series vacuum pumps can work for long term in the well-ventilated room with ambient temperature of 5-30 ℃ and with humidity ≤80%.

In addition to the above applications, the XD series vacuum pumps can be available other applications, such as:

1. To increase the amount of the pumping gas and to improve the vacuum degree, please combine with Roots pumps to form a unit for this.

2. If pumping moist air or condensable gas, the condenser can be installed before the vacuum pump and the gas ballast valve is installed on the vacuum pump.

3. If pumping the gases containing dust particles, the dust filters can be installed in front of the vacuum pump.

4. If pumping the corrosive gases, the corrosion-proof gas filter can be installed in front of the vacuum pump.

List of performance

Parameters Model	XD-020	XD-040	XD-063	XD-080	XD-100	XD-160	XD-202	XD-250	XD-302
Pumping rate (m³/h)	20	40	63	80	100	160	200	250	300
Pressure limit (mbar)	0.1~0.5	0.1~0.5	0.1~0.5	0.1~0.5	0.1~0.5	0.1	0.1	0.1	0.1
Motor power (kw)	0.75	1.5	2.2	2.2	3	4	4.5	5.5	7.5
Motor speed (r/min)	2880	1440	1440	1440	1440	1440	1440	1440	1440
Noise (db)	≤62	≤65	≤65	≤65	≤ 67	≤ 70	≤ 72	≤ 73	≤ 75
Allowable steam pressure (mbar)	40	40	40	40	40	40	40	40	40
Pumping water steam (kg/h)	0.3	0.3	1	1	1.6	2.5	4	4.5	5
Working temperature (℃)	82	80	80	80	84	95	95	81	83
Oil volume (L)	0.5	1	2	2	2	5	5	7	7
Weight (kg)	18	45	55	60	70	150	150	195	211
Air intake thread	Rp3/4’’	Rp1/4’’	Rp1/4’’	Rp1/4’’	Rp1/4’’	Rp2’’	Rp2’’	Rp2’’	Rp2’’
Overall dimensions L * W * H（mm）	650300280	650300280	650430295	650430295	720430295	850505440	850505440	980560440	1010560440

Q:Metering pumps related matters: Rotate to stroke length 100% position. This allows the kit to rotate to the back of the drain hole and align the bottom of the pump. Adjust the hydraulic end and diaphragm to the proper position during the pump operation.The duration of the pulse may not be long enough for the reaction time. With respect to the standard pulse width 80msec, the flow monitor pulse width expansion can be activated, increasing the pulse width to 300msec. Activate the smart switch, remove the cover fixed circuit board, remove the jumper X-1. This activates the extended function and allows more time before the failure instructions.Metering pump installed from the exhaust pump head, the use of self suction liquid imbibition. Keep the suction line as short as possible.

Q:Does the reservoir water heater press the booster pump (high marks)?: The outlet water pressure of hot water is the same as that of cold water. The water heater is pushed by cold water to push out the hot water. (of heating). Installation location about 2 meters away from the ground, the impact of water pressure is not large, in rural areas, the installation position in more than two buildings will have an impact. In the city, the installation position is above four floor to affect the water pressure.

Q:How to distinguish the flow and displacement in the hydraulic pump? What's the difference between the two?: The unit of displacement is the milliliter. How many milliliters does the pump rotate per circle? The displacement is the pump, the individual,The unit of flow is generally a liter, a figure added to the displacement of the pump over a period of time,

Q:Why is the flow of the pump too small will occur cavitation phenomenon?: Why is it easy to produce cavitation when the inlet flow of pump is lowered?This is because the main performance parameters such as the head, power and efficiency of the centrifugal pump are not fixed, but vary with the flow rate. The curve drawn on a coordinate paper is called the performance curve or characteristic curve of the centrifugal pump. What happens when the flow rate decreases? The disadvantage of throttling adjustment is that the pump flow is small, and the impeller is easy to cause cavitation

Q:What is the difference between centrifugal pump and positive displacement pump?: Positive displacement pump is the volume pump, this type of pump is to rely on changes in volume to compress fluid work, including: diaphragm pumps, gear pumps, screw pumps, etc.;

Q:What are the parts of a pump? How do you classify it?I just want to know: The liquid ring pump: pumping air, the working medium is generally at room temperature water gas lift pump: simple structure of submersible sewage pump: a form of basic principle, performance parameters of centrifugal pump, with it the same. Underwater installation, sound, water cooling condition, screw pump: spiral lower invasion water medium variety formThere are too many kinds of pumps, such as submersible pumps for wells, centrifugal feed pumps, sewage pumps, etc. the submersible pumps are wet, oil immersed, etc.The water pump for automobiles is divided into oil lubrication and grease lubrication,

Q:How to install, operate and maintain the pipeline booster pump?: When the pump leaks, check it immediately to prevent leakage. If it leaks with the motor connection, replace the mechanical seal. Check that the power is connected. Is the supply voltage consistent with the operating voltage of the pump?. If the above a and B are normal, please remove the pump, open the pump cover, remove the foreign body in the pump, and then pump the lid on, and then tighten it to normal.No water pump, pump installed in the tap water pipeline, such as tap water level in the pump impeller on the plane (horizontal installation) or center line (vertical) below, you should turn off the power supply, to tap water level rise more than the impeller plane or the center line, connected to the power supply, to avoid mechanical damage (automatic no need to turn off the electric type). When the pump used in pumping wells, please check whether the water inlet pipe leak; pump cavity storage is not enough, should be filled with water, whether the suction process is too high, proper adjustment. Check whether the inlet and outlet diameter is too small or blocked. Automatic type after a period of time, there may be automatic failure phenomenon, mainly stainless steel and other metal products in pipes, long-term precipitation to shut off the power supply after unloading, unscrew the top screw, remove the plastic sheet to be cleaned, and then, according to the original reset, the normal debugging, can be re used.

Q:What are the starting and stopping procedures for centrifugal pumps?: Before using the centrifugal pump, the operation instructions of the centrifugal pump shall be read carefully and the specific operation procedures shall be understood so as to make proper use of the centrifugal pump products. The first step is the operation of centrifugal pump inlet valve of centrifugal pump centrifugal pump for all open cavity filled with liquid, close the outlet valve, start the motor, the motor speed is normal, can gradually open the outlet valve, to adjust to the desired condition. Pay attention to self suction centrifugal pump starts to open the exhaust valve, outlet valve should be opened quickly in the normal operation of the motor, to prevent air inlet pipe off caused by cavitation phenomenon produces centrifugal pump, centrifugal pump vibration phenomenon leads to noise of the smoke is not on the water.

Q:The main factors affecting the performance of centrifugal pumps: Revolutions required to have. It has the following meanings: 1, similar to the geometry of centrifugal pump, everywhere efficiency at the top of the similar condition; centrifugal pump 2, than the number of different, its geometry must be different than the number; the same pump, its shape is similar, but does not rule out the shape similar situation. The following factors are related to specific speed. The specific speed of centrifugal pump has nothing to do with the nature of the conveying fluid, but has a close relationship with the shape of the impeller and the performance curve of the pump. The pump with high specific speed corresponds to the highest efficiency when the flow rate is large and the head is small

Q:Working principle and diagram of axial piston pump with pressure compensation variable: The size of the outlet flow pressure compensated variable displacement pump with outlet pressure of approximately in a certain range according to the constant power curve. When the pressure oil from the main part of the channel (a), (b), (c) into the inferior vena cava (d) variable shell, oil by the channel (E) respectively into the channel (f) and (H), when the spring force is greater than the oil (f) into the lower end of the piston ring servo hydraulic thrust area when the oil liquid (H) to the chamber (g), push the variable downward movement of the piston, the pump flow increases. As for the hydraulic servo piston end thrust force ring shaped area is greater than the spring when the servo piston moves upward, blocking channels (H), the (g) (I) through the cavity of the oil cavity pressure relief, at this time, the piston moves up, the variable head angle decreases, the pump flow rate decreases.

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