Spare parts and accessories

Spare parts

Belgorod Hydromechanical Plant supplies spare parts for PC pumps.

Spare parts are supplied not only to SP series pumps, but also to pumping equipment that has been modernized by specialists of our company.

Spare parts list:

  • rotor
  • stator
  • swivel repair kit
    • finger - 2 pcs.
    • loop - 4 pcs.
    • protective case - 2 pcs.
    • locking sleeve - 2 pcs.
    • retaining ring - 2 pcs.
    • sealing ring - 4 pcs.
    • head sleeve - 4 pcs., (from 45 sizes)
    • hinge sleeve - 2 pcs., (from 45 sizes)
  • articulated shaft
  • transition shaft
  • mechanical seal
  • gland packing seal

The hinge assembly is made of steel 40X13 in accordance with GOST 5632-72 or stainless steel 12X18H10T according to GOST 5632-72 (analogue steel AISI 304). Connection type is closed finger or cardan. The hinge unit works out the eccentricity of the rotor, is filled with lubricant, has a hermetic design.

The protective cover of the hinge assembly is designed to prevent grease from entering the pumped medium. It is made by casting from polyurethane mixtures (alternative to materials based on rubbers). Protective covers of polyurethane are capable to operate in aggressive environments, under conditions of high and low temperatures, high pressures. Operating temperature ranges from -500С to +900С. The advantages of polyurethane include such as high chemical, abrasive resistance, durability, polyurethane does not lose its elasticity, while having increased hardness.

Sealing - stuffing box with graphite packing (NSG). Benefits: low friction coefficient, wide operating temperature range is from - 500C to + 2000C, good thermal conductivity and low heat generation, low probability of flow of the pumped medium between compaction fibers. Operation environment: abrasive and crystallizing media, media with adhesive ability.

All materials coming into production for the manufacture of parts and spare parts of the pump unit have certificates or declarations of conformity, in accordance with the requirements of the current regulatory documents of the Russian Federation.

It is allowed to replace the materials indicated in the drawings with others that do not deteriorate the quality and reliability of the unit and meet the requirements of the design documentation.

Mechanical seals


General information

The main purpose of the mechanical seal is to seal the transition shaft of the screw pump in order to prevent the leakage of the working medium into the atmosphere.

The mechanical seal consists of two rings of a friction pair, one ring is fixed and installed in the body of the pump end seal, the second is fixed on a rotating shaft. The working surfaces of the friction pair are pressed to each other by a spring. The surfaces of the moving and stationary parts have a perfectly smooth surface, the gap between them remains less than a micron. Also, the design has secondary seals, which provide tightness and are made of various elastomers (NBR, EPDM, VITON).

The cooling of the end seal occurs due to the pumped medium (single end seal) or due to the barrier fluid (double end seal).

Technical characteristics of the BS2100 series mechanical seals

Mechanical seals (BSM7N series) supplied by our company are made of the following materials:

  • fixed ring (graphite / silicon carbide / tungsten carbide);
  • rotating ring (graphite / silicon carbide / tungsten carbide);
  • secondary seals (NBR, EPDM, VITON);
  • metal parts (AISI304 stainless steel).

 

Specifications of BSM7N series mechanical end seals:

  • fluid temperature - 400С…+1500С;
  • overpressure of the working medium in the pump chamber is up to 10 kgf / cm2;
  • shaft diameter for the installation of the mechanical seal is 10-100 mm.

Dimensions of the BS2100 series mechanical seals in mm.

d1d2d3L1L2L3L4
102021515,227,735,2
122223615,226,734,2
142425615,229,234,2
152526615,229,234,2
162627615,229,234,2
183233620,231,739,2
203435620,231,739,2
223637620,231,739,2
243839620,234,244,2
253940620,234,244,2
284243626,236,744,2
d1d2d3L1L2L3L4
304445726,235,743,2
324648726,235,748,2
334748726,235,748,2
354950826,234,747,2
405658830,237,247,2
435961830,237,252,2
456163830,237,252,2
4864661030,235,250,2
5066701030,237,750,2
5571751030,237,760,2
5878781033,242,760,2
d1d2d3L1L2L3L4
6080801233,240,758,2
6383831233,240,758,2
6585851233,240,768,2
6888901233,240,768,2
7090921233,248,268,2
7599971240,248,268,2
801041051440,247,777,7
851091101440,247,777,7
901141151440,252,777,7
951191201440,252,777,7
1001241251440,252,777,7
Technical characteristics of the BSM7N series mechanical seals

Mechanical seals (BSM7N series) supplied by our company are made of the following materials:

  • fixed ring (graphite / silicon carbide / tungsten carbide);
  • rotating ring (graphite / silicon carbide / tungsten carbide);
  • secondary seals (NBR, EPDM, VITON);
  • metal parts (AISI304 stainless steel).

 

Specifications of BSM7N series mechanical end seals:

  • fluid temperature -300С…+2200С;
  • overpressure of the working medium in the pump chamber is up to 1.8 MPa;
  • speed is up to 10 m/s;
  • shaft diameter for the installation of the mechanical seal is 10-100 mm.

Dimensions of the BSM7N series mechanical seals in mm.

d1d3d6d2L1L2f
1425212535106
1627232735106
1833273337,511,57
2035293537,511,57
2237313737,511,57
243933394011,58
254034404011,58
2843374342,511,58
3045394542,511,58
3247424842,511,58
d1d3d6d2L1L2f
3348424842,511,58
3550445042,511,58
3855495645148
4057515845148
4360546145148
4562566345148
4865596645148
5067627047,5158
5370657347,5158
5572677547,5158
5879707852,5159
d1d3d6d2L1L2f
6081728052,5159
6384758352,5159
6586778552,5159
6889819052,5189
7091839260189
75998897601810
80104951056018,210
851091001106018,210
901141051156518,210
951191101206517,210
1001241151256517,210