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CN-224228933-U - Mechanical sealing device of centrifugal pump

CN224228933UCN 224228933 UCN224228933 UCN 224228933UCN-224228933-U

Abstract

The utility model relates to the technical field of centrifugal pumps and discloses a mechanical sealing device of a centrifugal pump, which comprises a pump assembly mechanism, a connecting component and a sealing assembly, wherein the pump assembly mechanism comprises a pump body, a base fixed at the bottom of the pump body, a mounting head mounted at one end of the pump body, a connecting piece mounted at one end of the mounting head, a central shaft mounted at the center inside the mounting head, and a sealing assembly mounted outside the central shaft, the connecting mechanism comprises a connecting sheet mounted at one end of the pump body and a mounting groove arranged in the connecting sheet. According to the utility model, through the arrangement of the sealing assembly, a connecting gap is easy to appear at the joint of the part and the central shaft, the joint of the part and the central shaft is sealed through the sealing ring, the sealing ring and the central shaft are fixed through the fixing ring, and meanwhile, the joint of the part is extruded through the connecting buckle and the pressing buckle, so that the joint gap is reduced, and the parts are reinforced from inside.

Inventors

  • MENG HANBING
  • XIAO LI

Assignees

  • 高道流体密封(陕西)有限公司

Dates

Publication Date
20260512
Application Date
20250625

Claims (8)

  1. 1. A mechanical sealing device of a centrifugal pump is characterized by comprising: Pump assembly mechanism (100), including pump body (101), be fixed in base (102) of pump body (101) bottom, install in installation head (103) of pump body (101) one end, install in the center pin of installation head (103) inside center department, install in seal assembly (105) of center pin outside: Coupling mechanism (200), including install in connection piece (201) of pump body (101) one end, set up in mounting groove (202) in connection piece (201), set up in seal gasket (203) in mounting groove (202), install in connector (204) at installation head (103) both ends, set up in connection piece (201) outside reinforcement subassembly (205), set up in coupling assembling (206) between connector (204).
  2. 2. A mechanical sealing device for a centrifugal pump according to claim 1, wherein the sealing assembly (105) comprises a sealing ring (1051) sleeved outside a central shaft, a fixing ring (1052) sleeved at the outer center of the sealing ring (1051), connecting buckles (1053) equidistantly distributed on one side, far away from the center, of an inner cavity of the mounting head (103), pressing buckles (1054) slidingly connected in the connecting buckles (1053), and an adjusting bolt (1055) rotatably connected to one end of each pressing buckle (1054).
  3. 3. A mechanical seal device for a centrifugal pump according to claim 2, wherein said sealing rings (1051) are made of rubber, and said fixing rings (1052) are connected by screws.
  4. 4. The mechanical sealing device for the centrifugal pump of claim 1, wherein the reinforcing component (205) comprises a reinforcing ring (2051) sleeved outside the connecting sheet (201), a rack groove (2052) equidistantly arranged inside one end of the reinforcing ring (2051), an L-shaped connecting frame (2053) slidingly connected inside the rack groove (2052), and positioning teeth (2054) fixed on one side of the L-shaped connecting frame (2053) close to the center of the reinforcing ring (2051).
  5. 5. The mechanical sealing device for the centrifugal pump of claim 4, wherein the inner surface of the reinforcing ring (2051) is attached to the outer surface of the connecting piece (201), and the connecting pieces (201) form a movable connection structure through the L-shaped connecting frame (2053) and the reinforcing ring (2051).
  6. 6. A mechanical sealing device for a centrifugal pump according to claim 1, wherein the mounting head (103) is connected with the pump body (101) through a connecting piece, and the mounting head (103) is connected with the connecting piece through a connector (204).
  7. 7. A mechanical seal for a centrifugal pump according to claim 1, wherein said connection assembly (206) comprises a connection screw (2061) equally spaced on opposite sides of the connection member, an adjustment sleeve (2062) threaded on the outside of said connection screw (2061), and an adjustment head (2063) fixed to the outside center of said adjustment sleeve (2062).
  8. 8. The mechanical sealing device for the centrifugal pump according to claim 7, wherein the mounting heads (103) form a relative movement structure through connecting screws (2061), and two ends of the mounting heads (103) are respectively embedded in the connecting piece.

Description

Mechanical sealing device of centrifugal pump Technical Field The utility model relates to the technical field of centrifugal pumps, in particular to a mechanical sealing device of a centrifugal pump. Background The centrifugal pump is a pump for conveying liquid by centrifugal force generated when the impeller rotates, and mainly comprises the impeller, a pump body, a pump shaft, a bearing, a sealing ring, a stuffing box and the like. The centrifugal pump can be widely used for conveying slurry containing solid particles in industries such as electric power, metallurgy, coal, building materials and the like. The mechanical sealing device of the centrifugal pump comprises a pump cover seat and a pump shaft, wherein a movable ring seat is arranged on one surface of the pump cover seat, a movable ring is arranged on the inner side of the movable ring seat, an elastic ring is sleeved on the periphery of the movable ring seat, a plurality of inner guide grooves are uniformly distributed on the movable ring seat along the annular direction, guide posts are slidably arranged in each inner guide groove, one end of each guide post abuts against the peripheral side face of the elastic ring, a first spring is sleeved on each guide post, one end of each first spring is connected to one surface of each inner guide groove, a static ring seat is arranged on one side of the movable ring seat, a static ring is arranged on the inner side of the static ring seat, the static ring is movably arranged on the pump shaft, a positioning ring is arranged between the static ring and the movable ring, and the positioning ring is arranged on the inner side of the movable ring seat. The utility model has the advantages of simple and reasonable structural design, convenient installation, good mechanical sealing performance, strong practicability and high market application value. In the current centrifugal pump at the in-process of liquid delivery, because live time overlength, the condition that becomes flexible appears in the sealing of then connecting piece, and the sealing after becoming flexible then can influence the leakproofness when the device carries liquid, and the problem of liquid leakage appears then to because the wholeness of device leads to the maintenance difficulty, be difficult to consolidate the junction. Disclosure of utility model This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model. In view of the above-mentioned prior art, there is a problem that the sealing member is loosened, and then liquid leaks. In order to achieve the above purpose, the present utility model provides the following technical solutions: a centrifugal pump mechanical seal device comprising: The pump assembly mechanism comprises a pump body, a base fixed at the bottom of the pump body, a mounting head mounted at one end of the pump body, a central shaft mounted at the center of the mounting head, and a sealing assembly mounted outside the central shaft: The connecting mechanism comprises a connecting sheet arranged at one end of the pump body, a mounting groove arranged in the connecting sheet, a sealing gasket arranged in the mounting groove, connectors arranged at two ends of the mounting head, a reinforcing component arranged outside the connecting sheet and a connecting component arranged between the connectors. As a still further proposal of the utility model, the sealing component comprises a sealing ring sleeved outside the central shaft, a fixed ring sleeved at the center of the outer part of the sealing ring, connecting buckles distributed at one side of the inner cavity of the mounting head far away from the center at equal intervals, a pressing buckle connected in the connecting buckle in a sliding way, and an adjusting bolt connected at one end of the pressing buckle in a rotating way. As a still further proposal of the utility model, the sealing rings are made of rubber, and the fixing rings are connected by screws. As a still further scheme of the utility model, the reinforcing component comprises a reinforcing ring sleeved outside the connecting sheet, a rack groove equidistantly arranged inside one end of the reinforcing ring, an L-shaped connecting frame slidingly connected inside the rack groove, and positioning teeth fixed on one side of the L-shaped connecting frame close to the center of the reinforcing ring. As a still further proposal of the utility model, the inner surface of the reinforcing ring is attached to the outer surface of the connecting sheets, and the connecting sheets form a movable connecting structure through the L-shaped connecting frame and the reinforcing ring. As a still further proposal of the utility model,