The operating pressure of high-pressure plunger pumps should generally be between 10MPa and 100MPa. It is a positive displacement pump, which achieves the purpose of transporting liquid by means of periodic changes in the volume in the working chamber; the mechanical energy of the prime mover is directly converted into the pressure energy of the transported liquid through the pump; the capacity of the pump only depends on the change value of the working chamber volume and the number of changes in the unit time, and is theoretically independent of the discharge pressure.

High pressure plunger pump types:

Different types of high-pressure plunger pumps have different uses, application environments, and performance parameters. The following types of high-pressure plunger pumps are currently commonly used on the market:

1. High pressure radial piston pump

2. Hydraulic high-pressure plunger pump

3. High-pressure three-piston pump

4. High pressure axial piston pump

5. Pneumatic high-pressure plunger pump

6. High pressure variable plunger pump

7. High pressure inclined axis plunger pump

High pressure plunger pump price:

Unit price: 2400~2500 yuan/unit

Lanzhong Electromechanical has the ability to design and produce various forms of DC water pumps, and can customize the structural type, rated flow rate, installation method, etc. according to customer needs. We will quote and wholesale supply based on the design and production difficulty of the water pump as well as the order quantity. Large quantity and good price are welcome to buy!

High pressure plunger pump model:

The general expression method for the model of a high-pressure piston pump is: nominal displacement - variable form (there are motorized servo variables, pressure compensation variables, electric variables, manual variables, etc.) - pressure level - Y (pump) or M (motor) - 14-1 (first structure code) - technical improvement code (A, B, C, etc.) - no mark or F (no mark means forward rotation direction, F means reverse rotation direction).

For example, 63SCY14-1B means: a manually variable cylinder-rotating axial piston oil pump with a displacement of 63 ml/rev and a pressure of 31.5MPa.

High pressure plunger pump structure:

The high-pressure plunger pump is mainly composed of two parts: the power end and the hydraulic end, and is equipped with pulleys, check valves, safety valves, pressure stabilizers, lubrication systems, etc.

1. Power end

(1)Crankshaft

The crankshaft is one of the key components of this pump. Using the integral type of crankshaft, it will complete the key step of changing from rotational motion to reciprocating linear motion. In order to balance it, each crankshaft pin is 120° from the center.

(2) Connecting rod

The connecting rod transmits the thrust on the plunger to the crankshaft, and converts the rotational motion of the crankshaft into the reciprocating motion of the plunger. The rod section adopts an I-shape, the large end is split, the bearing bush adopts the form of a thin-walled tile in half, and the small end tile adopts a bushing type and is positioned accordingly.

(3) Cross head

The crosshead connects the swinging connecting rod and the reciprocating plunger. It has a guiding function. It is closedly connected to the connecting rod and connected to the plunger clamp.

(4) Floating sleeve

The floating sleeve is fixed on the machine base. On the one hand, it serves to isolate the fuel tank and the sewage pool. On the other hand, it serves as a floating support point for the crosshead guide rod, which can increase the service life of the moving seal components.

(5) Base

The machine base is a force-bearing component that installs the power end and connects the liquid end. There are bearing holes on both sides of the rear of the machine base, and a positioning pin hole connected to the liquid end at the front to confirm the alignment between the center of the slide and the center of the pump head. There is a drain hole on the front side of the machine base to discharge leaking liquid.

2. Liquid end

(1)Pump head

The pump head is made of stainless steel and is integrally forged. The suction and discharge valves are arranged vertically. The suction hole is on the bottom of the pump head, and the discharge hole is on the side of the pump head. It is connected with the valve cavity, simplifying the discharge pipeline system.

(2)Sealed letter

The sealing box and the pump head are connected by a flange. The sealing form of the plunger is a rectangular soft packing made of carbon fiber textile, which has good high-pressure sealing performance.

(3)Plunger

(4) Liquid inlet valve and drain valve

The inlet and outlet valves and valve seats are low-damping, conical valve structures suitable for transporting liquids with high viscosity, and have the characteristics of reducing viscosity. The contact surface has high hardness and sealing performance to ensure that the inlet and outlet valves have sufficient service life.

Working principle of high pressure plunger pump:

The high-pressure plunger pump uses a fixed seal and a piston that moves back and forth. The plunger pump relies on the reciprocating motion of the piston, which causes the working volume of the pump chamber to change periodically to achieve suction and discharge of liquid.

The high-pressure plunger pump is a type of reciprocating pump and is a volumetric pump. Its plunger is driven by the eccentric rotation of the pump shaft to reciprocate. Its suction and discharge valves are both one-way valves. When the plunger is pulled outward, the pressure in the working chamber decreases and the outlet valve closes. When the pressure is lower than the inlet pressure, the inlet valve opens and liquid enters; when the plunger is pushed in, the pressure in the working chamber increases and the inlet valve closes. When the pressure is higher than the outlet pressure, the outlet valve opens and the liquid is discharged.

High pressure plunger pump uses:

1. High-pressure plunger pumps are suitable for use as process pumps in the petroleum, chemical and fertilizer industries;

2. High-pressure water descaling in metallurgy and steel rolling plants;

3. High-pressure water cleaning and descaling in construction, shipbuilding, sugar, paper, chemical and other industries;

4. Power source for oil field water injection, boiler water supply, and hydraulic machinery;

5. For food, pharmaceutical and other parts that need to produce high-pressure liquid, the transmission medium is fluid without solid particles.