Burun PF 1,8/4-0,55/4 - Single-screw pumps Burun® PF

Burun PF progressing cavity electric pump is intended for pumping water with mechanical admixtures up to 5% by weight and up to 2 mm in size and other mixed liquids with viscosity up to 2000 MPa, with temperature up to 35°С, at short-time operation (up to 10 minutes) - temperature up to 70°С.

Electric pump can be used for pumping out of seepage water, rainwater and wasted water from sewage holes, and also for pumping of different solutions and suspensions.

Pump is manufactured in single-phase version rated for 220 V and in three-phase version rated for 380V.

Pump us not intended for operation in explosion & fire hazardous premises.

Electric pump is related to items of general purpose, aspect 1, repairable, as per GOST 27.003-90.

Climatic version U* GOST15150-69. Continuous mode of operation.

Electric pump is a portable monoblock consisting of the electric motor and pump part.

The pump part consists of the progressing cavity pump. The operative parts of the pump are pump casing, working screw rigidly fixed on the motor shaft, and rubber shell secured by the support. Attached to the support is a quick-detachable filter.

The working screw of the pump is provided with single-start thread, its any cross-section is a circle, the centre of which is shift relatively to the axis by magnitude of eccentricity.

The shell has double-start helical surface the stroke of which is equal to double lead of screw.

During rotation of the screw in the shell the liquid is displaced between the screw and the shell: thus ensuring flow from a pump.

The asynchronous electric motor of single-phase or three-phase version is used to drive the pump.

Electric motor includes: rotor, stator, pipe, bearing shield and cover.

The electric pump of one-single phase is put in operation by means of the starting device.

Electric pump of three-phase version is connected to the mains by power cord through the automatic circuit breaker with compound splitter adjusted for the nominal current of the electric motor used.

The inner cavity of the electric motor, if viewed from the projecting shaft end, is separated from the flow passage by end-face seal and the cuff being pressed in the bearing shield. The cooling of the motor is effected due to heat emission into surrounding pumped medium.

• sewage works,for pumping of pure water and the polluted drain waters in domestic sphere, in the sphere of housing and communal services, agriculture and other branches
• drainage and drying-out, silt and dirt pumping from different capacities, holes, ditches
• watering and irrigation of agricultural lands, farmlands

• equalized liquid flow without pulsation and mixing and able to save its structure
• high self-priming ability
• simple design for convenient service. pumps consist of three main parts: corrosion-proof screw, rubber stator l and shaft sealing
• compact size (pump is portable), simple installation and service
• pump capacity is proportional to rotation speed. with variable frequency drives is easier to control pump parameters
• high pump pressure at a small dimension is provided with rubber stator with a self-regulating clearance. The clearance between screw and rubber stator remains constant at pressure increase

For example Burun ® PF 1,8 / 4 - М 0,55/4 TU 26-06-1622-92 , where:

• Burun ® – trade mark
• PF - submersible sanitary pump
• 1,8 - theoretical capacity, m²/h
• 4 - pressure of the pump (Рmax), kgf/сm²
• М - version of the motor: М – single-phase 220V; without designation – three-phase 380V
• 0,55 - rated power of the motor, кW
• 4 - number of motor poles