■Both closed impeller(HZ model) and open impeller(HZQ model) are available;Rear blades and wear ring are adopted to balance the axial force.

■Impeller and shaft are connected by a key,and locked by a special impeller nut.Eliminates the possible loose of impeller nut during operation,shut down and counterflow.

■Back pull design,the rotary part can be disassembled from the casing without dismantle the pipes.

■A cone space is designed for the sealing chamber,which allows the mechanical seal to be installed into a spacious room.Meanwhile,the impeller rear blades,inner surface and the guide blades are working together to form a self-flush flow flied in the sealing chamber without any external flush fluid. And the heat on the friction pair can be removed rapidly by the self-flush flow;the self-flush flow can avoid the accumulation of particles(<5%) between the dynamic and static rings,therefore prolongs the life of mechanical seal.

Structure drawing is as below:

■Single-stage single-suction horizontal centrifugal pump structure, the pump cover is fixedly clamped in the middle

by the connection between the pump body and the bearing housing, and the pump cover is positioned with the bearing

port and the bearing housing.

■The pump body adopts axial suction, radial discharge, foot support type, and can be directly fixed on the base. The tail of the bearing housing is supported on the base by the suspension bracket.

■The impeller has closed type (HZ type) and open type (HZQ type structure, balance axial force with back blade and ring ring)

■The impeller and the shaft are connected by a key, and a special impeller nut locking method is adopted to prevent the impeller nut from loosening when the medium is poured during operation or stopping the pump.

■The flushing and cooling interfaces of the pump body, pump cover, bearing housing and sealing end cover are all made of taper pipe thread, which increases the reliability of the pipeline seal. The bearing is made of rolling bearing, oil lubrication, and the oil pool volume is increased.

■The structure of the pump is designed as a rear door. When the inlet and outlet of the pump are not moved during the inspection (ie, the pump body does not move), the impeller, shaft, shaft seal and bearing components can be removed.

■The large conical cavity of the shaft seal box makes the mechanical seal in a spacious cavity, and also cooperates with the back vane, the guide vane of the inner wall of the cavity, and forms a self-flushing flow field in the shaft seal box, thereby eliminating the need The external flushing fluid is used to achieve self-flushing; the heat generated on the frictional secondary surface is quickly taken away, avoiding the accumulation of solid particles (<5%) in the medium on the contact surface of the rotating ring and the stationary ring, reducing wear and prolonging the machine. Sealed life

The pump structure is as follows

HZ/HZQ chemical process pump is suitable for pumping mineral acid solutions,organic acid solutions,brines,petrochemical solutions, organic compounds and other corrosive raw materials and products. It is mainly used in the below sections.

■Multiple evaporation and MVR evaporation process

■Refinery, petrochemical industries, coal chemical industries and low temperature projects

■Chemical industry,paper making industry,pulp industry,sugar making and other general process industries.

■Water plant, seawater desalinization

■Power plant

■Environment protection

■Vessel and at sea industries.

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