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    Oil pump assembly

    Our main products include screw refrigeration compressors and accessories, piston refrigeration compressors and accessories, Industrial refrigeration system accessories, Cold storage installation accessories, Ammonia chemical protection products, Refrigeration instrument and gauge, mobile cold storage and so on.

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  • Piston Compressor Oil Cooler

    Ammonia piston refrigeration compressor oil cooler: 1. Oil coolers are an oil cooling device commonly used in hydraulic and lubrication systems. The device can realize heat exchange between two fluid media with a certain temperature difference, thereby achieving the purpose of reducing oil temperature and ensuring normal operation of the system. 2. The oil cooler is referred to as oil cooling and is mainly used in piston compressors (ammonia). 3. Because the model of the piston machine is divided into 100, 125/170.

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  • Bearing Shell

    1. The bearing shell is very different from the production year and brand of the piston compressor. It is divided into one hole, two holes and no hole. 2. The bearing shell is the part of the sliding bearing and the shaft neck contact. The shape is a tile-shaped semi-cylindrical surface. It is very smooth. It is generally made of wear-resistant materials such as bronze and friction reducing alloy. In special cases, wood, engineering plastic or rubber can be used. production. There are two types of bearing shells: integral and split. The integral bearing shell is usually called the bushing. The integral bearing shell has two types of oil grooves and oil grooves. The bearing shell and the shaft neck adopt a clearance fit, and generally do not rotate with the shaft.

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  • Valve Group

    1. The piston refrigeration compressor valve group is also referred to as an exhaust valve group. The piston refrigeration compressor valve group is mainly composed of a valve seat, a valve flake, a spring and a lift limiter. 2. The piston refrigeration compressor valve group forms a variable working volume with the piston and the gas valve to complete the expansion, suction, compression and exhaust of the refrigerant vapor. 3. Working principle of piston refrigeration compressor valve group: When the gas valve is working, when the gas pressure under the valve flake is greater than the gas pressure above the valve flake and the self-weight of the spring and the valve flake, the valve flake leaves the valve seat and the valve flake opens. Instead, the valve flake falls and the valve flake closes.

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  • Connecting Rod For Refrigeration Compressor Parts

    The role of the piston rod: 1. The piston and the crankshaft are connected, and the force exerted by the piston is transmitted to the crankshaft, and the reciprocating motion of the piston is converted into the rotational motion of the crankshaft.The connecting rod body has three parts, the part connected with the piston pin is called the connecting rod small head; the part connected with the crankshaft is called the big connecting rod, and the connecting part of the big head and the small head is called the connecting rod shaft. 2. The connecting rod is divided into high pressure and low pressure, the high voltage of the bipolar piston machine and the low pressure of the low level piston machine.

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  • Cylinder Liner For Piston Compressor

    The main functions of the cylinder liner in the piston refrigeration compressor: 1. Forming a variable working volume with the piston and the gas valve to complete expansion, suction, compression, and exhaust of the refrigerant vapor; 2. Guide the reciprocating motion of the piston. 3. The cylinder liner is embedded in the cylinder barrel and forms a combustion chamber together with the piston and the cylinder head. 4. Cylinder liners are divided into low pressure and high pressure.

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  • Shaft Seal For Piston Compressor

    1. The screw refrigeration compressor shaft seals usually include movable ring, retaining ring and O-ring. 2. The shaft seal for refrigeration compressor has two models, Model 1 and Model 2. 3. In the refrigeration compressor, the refrigerant is prevented from infiltrating into the system to the outside or the air, and a shaft seal must be provided between the extended end of the crankshaft and the body. Friction ring type shaft seals are widely used in open compressor series. The structure comprises a spring, a spring seat, a sealing ring, a fixing ring and a movable ring.

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    Piston For Piston Compressor Parts

    Pistons are versatile, regardless of the machine manufacturer. 1. Piston Set: The piston set is a general term for pistons, piston pins and piston rings. The piston group is driven by the connecting rod to make a reciprocating linear motion in the cylinder, thereby forming a variable working volume together with the cylinder to realize the processes of suction, compression and exhaust. 2. Model: 100, 125, 170. 3. Used medium: Ammonia. 4. Use range: Piston compressor unit.

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  • Balanced Piston Sleeve

    1. The role of the balance piston is to balance the axial force of the rotor. 2. On both sides of the rotor of the screw compressor, there is an axial force directed to the intake direction due to the differential pressure between the intake and exhaust. 3. The balance piston is under the action of oil pressure, giving the rotor an opposite axial force to achieve equilibrium. 4. The balance piston generally bears 70% of the axial force, and the rest is borne by the positioning bearing. The balance piston is generally placed on the male rotor because the axial force of the male rotor is greater than that of the female rotor.

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