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CN-224201123-U - Mechanical seal for kettle

CN224201123UCN 224201123 UCN224201123 UCN 224201123UCN-224201123-U

Abstract

The utility model relates to a mechanical seal for a kettle, which comprises a gland and a shaft sleeve, wherein a sealing cover surrounding the shaft sleeve is fixedly connected to the outer end surface of the gland, a sealing cavity is formed between the inner wall of the sealing cover and the outer end surface of the gland and the outer wall of the shaft sleeve, a first mounting ring positioned in the sealing cavity is fixedly sleeved on the shaft sleeve, a first moving ring is arranged on the first mounting ring, a first stationary ring opposite to the first moving ring is arranged on the sealing cover, a first spring propping against the first moving ring is arranged in the first mounting ring, a second stationary ring is arranged on the gland under the action of the first spring, a second mounting ring is fixedly connected to the shaft sleeve, a second moving ring opposite to the second stationary ring is arranged in the second mounting ring, and a second spring propping against the second stationary ring is arranged in the gland. The mechanical seal for the kettle can realize better sealing effect to meet high sealing requirements, and has better applicability.

Inventors

  • HU FANGBIN
  • WAN YONG

Assignees

  • 温州重齐机械设备有限公司

Dates

Publication Date
20260505
Application Date
20250530

Claims (7)

  1. 1. The mechanical seal for the kettle comprises a gland (1) and a shaft sleeve (2), wherein the shaft sleeve (2) is arranged on the gland (1) in a penetrating manner, the mechanical seal is characterized in that a sealing cover (3) encircling the shaft sleeve (2) is fixedly connected to the outer side end face of the gland (1), a sealing cavity (4) is formed between the inner wall of the sealing cover (3) and the outer side end face of the gland (1) and the outer wall of the shaft sleeve (2), a first mounting ring (5) positioned in the sealing cavity (4) is fixedly sleeved on the shaft sleeve (2), a first movable ring (6) is arranged on the outer side end face of the first mounting ring (5), a first stationary ring (7) opposite to the first movable ring (6) is arranged on the inner wall of the sealing cover (3), a first spring (8) abutted to the first movable ring (6) is arranged in the first stationary ring (6), a second stationary ring (9) is arranged on the inner side end face of the gland (1), a second stationary ring (9) is fixedly connected to the second stationary ring (10) on the second end face (10), a second spring (12) propping against the second stationary ring (9) is arranged in the gland (1), and the second stationary ring (9) props against the second movable ring (11) under the action of the second spring (12).
  2. 2. The mechanical seal for kettles according to claim 1, wherein a first mounting groove (51) matched with the first moving ring (6) is formed on the outer side end face of the first mounting ring (5), a limit protrusion (52) is formed on the inner wall of the first mounting groove (51), a limit groove (61) matched with the limit protrusion (52) is formed on the outer wall of the first moving ring (6), and the first moving ring (6) is placed in the first mounting groove (51) so that the limit protrusion (52) is kept in the limit groove (61).
  3. 3. The mechanical seal for kettles according to claim 2, wherein a second mounting groove (101) matched with the second moving ring (11) is formed in the outer side end face of the second mounting ring (10), a first limiting pin (13) is inserted into the second mounting groove (101), a limiting hole (111) matched with the first limiting pin (13) is formed in the second moving ring (11), and the second moving ring (11) is placed in the second mounting groove (101) so that the first limiting pin (13) is inserted into the limiting hole (111).
  4. 4. The mechanical seal for kettles according to claim 3, wherein a third mounting groove (31) matched with the first stationary ring (7) is formed in the inner wall of the sealing cover (3), the first stationary ring (7) is arranged in the third mounting groove (31), and a second limiting pin (14) inserted into the first stationary ring (7) is arranged on the sealing cover (3) in a penetrating manner.
  5. 5. The mechanical seal for kettles according to claim 4, wherein said first movable ring (6), second movable ring (11) and second stationary ring (9) are made of silicon carbide, and said first stationary ring (7) is made of rubber.
  6. 6. The mechanical seal for kettles according to claim 5, wherein a first abutting ring (15) located on the inner side end face of the first movable ring (6) is arranged in the first mounting groove (51), the first spring (8) abuts against the first abutting ring (15), a second abutting ring (16) located on the outer side end face of the second stationary ring (9) is arranged in the gland (1), and the second spring (12) abuts against the second abutting ring (16).
  7. 7. The mechanical seal for kettles according to claim 6, wherein a liquid injection channel (17) communicated with a sealing cavity (4) and a joint of a second movable ring (11) and a second stationary ring (9) is formed in the gland (1), and an air outlet (18) and a sewage outlet (19) communicated with the sealing cavity (4) are respectively formed at the upper end and the lower end of the sealing cover (3).

Description

Mechanical seal for kettle Technical Field The utility model relates to the technical field of mechanical sealing, in particular to a mechanical sealing for a kettle. Background A mechanical seal for the reactor is a sealing device which is arranged on the reactor and plays a role in sealing between a stirring shaft which is inserted into the reactor and keeps rotating and the reactor, for example, the utility model patent discloses a mechanical seal for the reactor (bulletin number: CN 209977255U) which realizes the sealing function through a movable ring and a static ring which are abutted against each other. The present utility model has been made in view of the above problems. Disclosure of utility model The utility model provides a mechanical seal for a kettle, which solves the problems in the use process of the prior art. The technical scheme of the utility model is realized as follows: The utility model provides a mechanical seal for cauldron, includes gland and axle sleeve, the axle sleeve wears to locate on the gland, fixedly connected with encircles the sealed lid of axle sleeve on the gland outside terminal surface, constitute sealed cavity between sealed lid inner wall and gland outside terminal surface and the axle sleeve outer wall, fixed cover is equipped with the first collar that is located sealed cavity on the axle sleeve, be provided with first moving ring on the first collar outside terminal surface, be provided with the first quiet ring relative with first moving ring on the sealed lid inner wall, be provided with the first spring of supporting on first moving ring in the first collar, first moving ring offsets with first quiet ring under the effect of first spring, be provided with the quiet ring of second on the gland inboard terminal surface, fixedly connected with second collar on the axle sleeve inboard terminal surface, be provided with the second moving ring relative with the quiet ring of second on the second collar outside terminal surface, be provided with in the gland and support the second moving ring under the effect of second spring. Preferably, a first mounting groove matched with the first movable ring is formed in the outer side end face of the first mounting ring, a limiting protrusion is formed on the inner wall of the first mounting groove, a limiting groove matched with the limiting protrusion is formed on the outer wall of the first movable ring, and the first movable ring is arranged in the first mounting groove to enable the limiting protrusion to be kept in the limiting groove. Preferably, a second mounting groove matched with the second movable ring is formed in the outer side end face of the second mounting ring, a first limiting pin is inserted into the second mounting groove, a limiting hole matched with the first limiting pin is formed in the second movable ring, and the second movable ring is arranged in the second mounting groove to enable the first limiting pin to be inserted into the limiting hole. Preferably, a third mounting groove matched with the first static ring is formed in the inner wall of the sealing cover, the first static ring is arranged in the third mounting groove, and a second limiting pin inserted into the first static ring is arranged on the sealing cover in a penetrating manner. Preferably, the first moving ring, the second moving ring and the second stationary ring are made of silicon carbide, and the first stationary ring is made of rubber. Preferably, a first abutting ring located on the inner side end face of the first movable ring is arranged in the first mounting groove, the first spring abuts against the first abutting ring, a second abutting ring located on the outer side end face of the second stationary ring is arranged in the gland, and the second spring abuts against the second abutting ring. Preferably, a liquid injection channel communicated with the sealing cavity and the joint of the second movable ring and the second stationary ring is formed in the gland, and an air outlet and a sewage outlet communicated with the sealing cavity are respectively formed at the upper end and the lower end of the sealing cover. In summary, the utility model has the beneficial effects that the sealing surface positioned outside the reaction kettle is formed between the first movable ring and the first static ring, the sealing surface positioned inside the reaction kettle is formed between the second movable ring and the second static ring, and the internal and external double sealing is realized, so that the sealing effect of the mechanical sealing for the kettle is improved, the mechanical sealing device can be better suitable for the reaction kettle with high sealing requirement, and the mechanical sealing device has better applicability. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the