Rotary pump: the principle of operation. Types of pumps

Pumps of rotary type are perfectly suited for operation at hydroelectric power stations of different capacities. Modern modifications are actively used in the industry for pumping oils, as well as mixtures. Rotors in devices are used with pushers of different sizes. The force of the rotational torque of the shaft depends on the engine power. As a rule, collector motors are installed on the devices.

How does it work?

A standard rotary pump includes an undercut piston mechanism. The pushers are used with fixed plates. The camera of the main unit has an oblong shape. A shaft is mounted in the rear part, which is fixed to the posts. O-rings are necessary to strengthen the pusher. At the bottom of the pump is a frame. Under the struts are installed special seals for sealing.

The motor can be fixed behind the posts near the rotor box. The rotation process is controlled by an internal modulator. When the voltage is applied to the motor, the controller switches on. Next, the engine anchor is started, which drives the shaft. Then the pushers rotate. At the same time, the pressure in the chamber of the main unit is significantly increased. To stabilize the process, the rods are used. They are fixed on pins or plates.

Homemade modifications

How to make a manual rotary pump for water by hand? A conventional model can be assembled on the basis of a drive motor. The pushers are more suitable for selecting a small thickness. In the main unit, the rack is installed with a welding machine. Many experts recommend thoroughly polishing the front of the pump. The shaft of the model is important to fix through the bushing. Directly the rotor box is installed under the rack.

Types of pumps

There are volumetric, vacuum, and also cam devices. The first type is produced with large pins that are in the chamber and play the role of pusher. Modern devices are used not only at stations, but also wells. Vacuum modifications are distinguished by high power. Adapters for them are selected contact and channel type. The most common are the cam devices.

The pushers of this type are produced with small protrusions. The blockers are of a mechanical and electronic type. Motors are most often installed behind blocks and fastened on racks. Cam devices are used mainly at hydroelectric stations. Their production rate is quite high. The parameter of energy consumption depends on the frequency of the rotor.

Volumetric modifications

At hydrostations, a volumetric rotary pump is quite common. The principle of the device is to increase the pressure on the plates. The shaft of the models is used with fittings. For fixing the plungers, not only rings but also clamps are used. Gaskets are always installed to fix the bushing. The controllers for the motor are selected by the transient type.

Duct modifications in our time are infrequent. Separately it is important to note that pumps of rotary type with motors of 20 kW are presented on the market. They are great for pumping oils. By dimensions, the modifications of the volume type are quite different. The pushers in the devices are only of a fixed type, they can not be removed. There is a good pump (rotary) of volume type in the range of 15-35 thousand rubles.

Vacuum type models

A vacuum rotary pump is often used for pumping high viscosity mixtures. The principle of the models is based on the transformation of electrical energy. The rotor of the modifications is often installed behind the posts. Pumps of this type operate at a frequency of no more than 3 thousand revolutions per minute. Some modifications are able to boast a high output parameter. The maximum pressure limit does not exceed 3 bar on the average.

Damper is used to protect the main unit. The motors are used with rotor boxes of open and closed type. Models with adapters are rare. Most often they are used for pumping liquids of low viscosity. Many experts recommend vacuum pumps for work in difficult conditions. Use modifications in the open air is permitted. There is a good rotary pump in the region of 30 thousand rubles.

Cam devices

For the trouble-free operation of the stations, the cam rotary pump perfectly fits. The principle of operation (for wells) is based on changing the pressure inside the chamber of the unit. Adapters for models are often used contact type, and the pins are used with small jumpers. Many devices are manufactured without longitudinal pushers. According to the performance parameter, pumps of this type are not considered to be the best.

To seal the chamber, bushings are often used, which are clamped with a nut under the camera. Blocks of belt type are rare. Frames are used with or without a body kit. The maximum pressure for pumps of this type starts at 8 bar. There is a good model of low power in the range of 30-40 thousand rubles.

Modifications of the GY1A035F series

This is a high-quality and efficient rotary pump. The principle of operation, the device model should be considered first. At the bottom of the structure is a wide frame that is connected to the stand. The expander at this pump is absent, therefore the device is not started immediately.

The adapter for the rotor is of contact type. If we talk about indicators, it is important to note the high level of pressure in the block. The camera in the device has an oval shape. If you believe the experts, then for hydro power plants the model does not fit well. The bleeding rate in the device is quite low.

The rotor of the modification is designed for three stages. A box for the motor is used in belt type. According to most experts, the pump does not suffer from network failures. In lubrication only plungers are needed. To activate the pump, channel-type controllers are used. Indicator blocks are installed very rarely.

Parameters of models of the GY1A040F series

For pumping a high viscosity liquid, this rotary pump is well suited. The device and the principle of operation are to be considered first. The motor for modification is selected with a collector. Anchor at modification is used with two windings. The limiting frequency of the model is in the range of 2-2.5 thousand revolutions. There is a cover for inspecting the rotor. A pump of this type operates from a special controller.

The indicator unit is installed through the modulator. According to experts, the rotor box is used with a high-quality protection system. Overloads on the transmission block are very rare. The pushers in the devices are applied in the form of a petal. The pressure reading on the chamber is about 5 bar. The clamps for the frame are made entirely of stainless steel. Pressure gauges are mechanical and digital. The price for this rotary pump for water starts from 33 thousand rubles.

Features of pumps series "НВР 220 moto"

The pump (vacuum, rotary) "НВР 220 moto" has many advantages. However, it is important to note that the pushers are of the channel type and are not capable of boasting of rapid pumping. Frequency indicator at the level of 2200 rpm. Also worth noting that the model has a blocker with a barbell. The channel drying filter is not available in this case.

The central unit is used with an adapter. The shaft at the pump is located under the camera and is capable of withstanding heavy loads. Above the plunger there is only one choke. The adapter for the rotor box is missing in this case. Also worth noting that the model is great for pumping oil in large quantities. It is worth a pump (vacuum, rotary) HBP 220 no more than 28 thousand rubles.

Modifications of the Intertool HT 0067 series

Pump for oil (manual, rotary, 26 l / min) Intertool HT 0067 is considered universal and highly valued in the industry. The pushers in the device are of a round shape, with water pumping are not bad. The motor under the pump is selected as a collector type with one armature. It is also worth noting that the modification uses a fixed pin.

The device is locked using a rod. The block under the camera is small in size. The limit pressure parameter is only 5 bar. The pump protection system is applied to the PK series. If you believe the feedback of experts, the device does a remarkable job of pumping water from wells. The manometer is not included in the standard equipment.

The rotor box itself is designed for four stages. The gearbox is used in a two-contact type. The total weight of this pump is 28 kg. Installation pins in the presented model in the lubricant do not need. Two gaskets are used to secure the rod. The price for this rotary pump starts from 28400 rubles.

SLR Series Parameters

The SLR rotary pump is only used for hydroelectric power stations. If you believe the experts, the model is capable of withstanding large overloads. The maximum pressure is 5 bar. The pump protection system is applied to the PK series. A separate output is provided for connecting the pressure gauge. The power of this modification is at a level of 5 kW.

The motor of the model is applied with a collector armature for two windings. It is also worth noting that in the lower part of the construction there is a protective nipple. The seal in the main chamber is not provided. It is worth mentioning the rotary pump within 30-32 thousand rubles.

Features of pumps series KO-505

This rotor-type pump is used at stations of different power. Many experts say that the model is quickly launched. The protection system is applied to the RK series. The pushers are used in a round shape, the resistance index is quite high.

The nominal power of the modification is 340 W. For pumping water from the well, the device fits well. It is also worth noting that the model has a stopper in its lower part that helps with increased pressure. The protective ring is located only in the front of the frame. The price for this rotary pump is from 38 thousand rubles.