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CN-224214687-U - Mechanical sealing mechanism

CN224214687UCN 224214687 UCN224214687 UCN 224214687UCN-224214687-U

Abstract

The utility model discloses a mechanical sealing mechanism which comprises a flexible sealing element and a reset installation abutting mechanism which is arranged outside the flexible sealing element and used for buffering and resetting the deformed flexible sealing element, wherein the reset installation abutting mechanism comprises a first fixing piece, a second fixing piece and a reset spring, the first fixing piece is arranged on the outer side of the flexible sealing element, a first abutting groove in interference fit with the first fixing piece is formed in the outer side of the flexible sealing element, the second fixing piece is arranged on the outer side of the flexible sealing element and below the first fixing piece, and the reset spring is arranged on the outer side of the flexible sealing element.

Inventors

  • FANG YOUQUAN

Assignees

  • 常熟市大润精密机械有限公司

Dates

Publication Date
20260508
Application Date
20250606

Claims (7)

  1. 1. The mechanical sealing mechanism is characterized by comprising a flexible sealing element (1) and a reset installation abutting mechanism (2) which is arranged outside the flexible sealing element (1) and is used for buffering and resetting the deformed flexible sealing element (1); the reset installation abutting mechanism (2) comprises a first fixing piece (21), a second fixing piece (22) and a reset spring (23); The first fixing piece (21) is arranged at the outer side of the flexible sealing piece (1), and a first abutting groove (11) in interference fit with the first fixing piece (21) is formed in the outer side of the flexible sealing piece (1); The second fixing piece (22) is arranged on the outer side of the flexible sealing piece, the second fixing piece (22) is positioned below the first fixing piece (21), and a second abutting groove (12) abutting against the second fixing piece (22) is formed on the outer side of the flexible sealing piece (1); The reset spring (23) is arranged on the outer side of the flexible sealing element (1), one end of the reset spring (23) is abutted against the first fixing piece (21), the other end of the reset spring (23) is abutted against the second fixing piece (22), and when the flexible sealing element (1) deforms, the reset spring (23) can buffer and enable the flexible sealing to return to an initial state through the first fixing piece (21) and the second fixing piece (22).
  2. 2. A mechanical seal according to claim 1, wherein the first abutting groove (11) and the second abutting groove (12) are each in a circular ring-shaped structure, and when the first fixing piece (21) and the second fixing piece (22) move, the flexible seal (1) can be deformed and can be abutted against the first abutting groove (11) and the second abutting groove (12).
  3. 3. A mechanical seal mechanism according to claim 1, wherein the lower outer diameter of the flexible seal member (1) is larger than the upper outer diameter of the flexible seal member (1), and the lower outer diameter edge of the flexible seal member (1) is in a circular arc shape, and when the flexible seal member (1) is compressed and deformed, the lower outer diameter is in a state of being compressed and deformed toward the inside of the flexible seal member (1).
  4. 4. The mechanical seal mechanism according to claim 1, wherein the reset mounting abutting mechanism (2) further comprises a limiting part (24), the end faces of the first fixing piece (21) and the second fixing piece (22) are respectively provided with openings positioned on contact surfaces of two ends of the reset spring (23), the limiting part (24) is provided with a pair of end faces which are respectively arranged on the end faces of the first fixing piece (21) and the second fixing piece (22), and the limiting part (24) is positioned on one side of the openings and is in an abutting state with the reset spring (23).
  5. 5. A mechanical seal according to claim 4, wherein the limiting portion (24) has a rectangular parallelepiped shape, and the limiting portion (24) is disposed obliquely with respect to the end surfaces of the first fixing piece (21) and the second fixing piece (22).
  6. 6. The mechanical sealing mechanism is characterized in that the reset installation abutting mechanism (2) further comprises a limiting sleeve (25), the limiting sleeve (25) is arranged at the bottom of the flexible sealing element (1), and an installation groove (13) in interference fit with the limiting sleeve (25) is formed in the flexible sealing element (1).
  7. 7. A mechanical seal according to claim 6, wherein the mounting groove (13) has a circular ring-shaped structure, and the upper diameter of the mounting groove (13) is larger than the lower diameter of the mounting groove (13).

Description

Mechanical sealing mechanism Technical Field The utility model relates to the technical field of mechanical sealing, in particular to a mechanical sealing mechanism. Background In the field of mechanical engineering, the sealing mechanism is a key component for preventing fluid leakage and ensuring normal operation of equipment, and particularly under the working conditions of high pressure, vibration or variable load, extremely high requirements are put on deformation adaptability and resetting reliability of a sealing element. The traditional mechanical seal adopts a rigid structure combination, for example, the metal spring directly presses against the rigid sealing ring to realize resetting, or mechanical connectors such as bolts, buckles and the like are relied on to fix the sealing member. However, such designs have significant drawbacks. At present, the traditional spring reset structure in the market only presses the sealing piece through a single point or a single side, when the sealing piece is deformed by axial load, the reset force is difficult to uniformly distribute, local excessive abrasion or deflection of the sealing piece is easy to cause, and particularly under a high-frequency vibration environment, the spring is easy to generate fatigue fracture due to rigid collision. But among the prior art sealing member and fixed knot structure adopt plane laminating or single-point location more, if bond through glue or bolt fastening, need accurate centering during the installation, and easily lead to the mounting to become flexible because of the vibration in long-term use, cause sealed inefficacy. Disclosure of utility model Aiming at the defects of the prior art, the utility model aims to provide a mechanical sealing mechanism with a buffering effect. In order to achieve the above purpose, the present utility model provides the following technical solutions: The flexible sealing device is further provided with a reset installation abutting mechanism which comprises a flexible sealing element and a reset installation abutting mechanism which is arranged outside the flexible sealing element and used for buffering and resetting the deformed flexible sealing element, wherein the reset installation abutting mechanism comprises a first fixing piece, a second fixing piece and a reset spring, the first fixing piece is arranged on the outer side of the flexible sealing element, a first abutting groove in interference fit with the first fixing piece is formed in the outer side of the flexible sealing element, the second fixing piece is arranged on the outer side of the flexible sealing element and below the first fixing piece, a second abutting groove which is in abutting connection with the second fixing piece is formed in the outer side of the flexible sealing element, the reset spring is arranged on the outer side of the flexible sealing element, one end of the reset spring is in abutting connection with the first fixing piece, and the other end of the reset spring is in abutting connection with the second fixing piece, when the flexible sealing element deforms, the reset spring can buffer and enable the flexible sealing element to be reset to an initial state through the first fixing piece and the second fixing piece. Through adopting above-mentioned technical scheme, through interference fit's first butt groove and second butt groove structure drive first stationary blade and second stationary blade respectively and reset to make flexible sealing member resume initial condition, solved traditional rigidity canceling release mechanical system response hysteresis lag, easily produced the problem of fatigue failure, realized sealing performance's self-sustaining and self-adaptation regulation. The utility model further provides that the first abutting groove and the second abutting groove are of circular ring structures, and when the first fixing piece and the second fixing piece move, the flexible sealing piece can deform and be in abutting connection with the first abutting groove and the second abutting groove. The utility model is further provided that the lower outer diameter of the flexible sealing element is larger than the upper outer diameter of the flexible sealing element, the lower outer diameter edge of the flexible sealing element is in an arc shape, and when the flexible sealing element is subjected to compression deformation, the lower outer diameter is in a state of extrusion deformation towards the inner direction of the flexible sealing element. The reset installation abutting mechanism is further provided with a limiting part, the end faces of the first fixing piece and the second fixing piece are respectively provided with an opening positioned on the contact surfaces of the two ends of the reset spring, the limiting part is provided with a pair of limiting parts and is respectively arranged on the end faces of the first fixing piece and the second fixing piece, and the limiting pa