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1.HW-type mixed flow pump mainly by the pump cover, impeller, pump,

pump shaft, sleeve, packing seat and bearing body (bearing frame)

and other major components, the use of front and rear structure of the

door (see Figure 1, ,three).

2.pump cover, respectively, and the pump and the water pipe

connected. There should be an appropriate clearance between the

pump cover plane and the impeller plane. The gap is too small, easy to

produce friction; gap is too large, will lead to a large number of pump

water pressure reflux, the pump efficiency. The actual use of the

appropriate gap is 0. 3 0. 7 mm (the pump shaft to pump the inlet side

of the measurement), the gap can be used to increase or decrease the

thickness of the pad to adjust

3.bearing device lOOHW 150HW using skeleton oil seal, 200HW 650HW

with packing seal structure. Its role is to prevent air from inhalation

and to prevent water from flowing out of the pump too much along the

shaft.

4.sleeve to protect the pump shaft, wear and replace after the timely.

5. the pump shaft with a single row of radial ball bearing support.

Bearings can be lubricated with lubricating oil, the oil should be

controlled in the oil mark between the marking, can also be used

grease lubrication one can be added when the assembly pump, the

use of removable front cover and back cover to supplement.

6. the top of the pump hole, for the irrigation or water pump connected

to the vacuum pump pumping water, the bottom of the butterfly, hole

for the water.

7.In order to expand the use of the pump to meet the different

requirements of users, can be used for different performance of the

impeller.

8.150 350HW-S-type pump accessories are into and out of the fixed

bending, bending, the end of the valve, pulley and coupling, 400 ~

650HW-S-type pump accessories into and out of the set bending,

check valve, pulley or coupling for users to choose.

9.HW-S-type pump bearing model and shaft seal specifications in

Table 1.

 model description: 300HW a 75 example:

300 a pump into, outlet diameter. Unit: mm HW one horizontal spiral case mixed

flow pump. 7 a design head. Unit: meter S structure (front, rear door structure). 6,

the use of standards

HW-S pump with GB / Tl 3008, JB / T6667 standard design, manufacture,

acceptance.