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CN-224200856-U - Collision-resistant mechanical seal for water pump

CN224200856UCN 224200856 UCN224200856 UCN 224200856UCN-224200856-U

Abstract

The utility model discloses a collision-resistant mechanical seal for a water pump, which belongs to the technical field of mechanical seals and comprises a stationary ring and a movable ring, and is characterized in that a follower is arranged on one side of the movable ring, which is far away from the stationary ring, a driver is arranged on one side of the follower, which is far away from the stationary ring, a spring is arranged between the follower and the driver, the spring is in a compressed state, a driven shifting plate is arranged at the edge of the follower, a driving shifting plate is arranged at the edge of the driver, the driven shifting plate and the driving shifting plate are alternately arranged, a collision folded plate is arranged at one end of the driven shifting plate, the collision folded plate and the driven shifting plate are in an integrated structure, and a connecting hole is arranged at the center of the driver in a penetrating way.

Inventors

  • DUAN GUOHUA
  • XU LINGLI

Assignees

  • 铭华泵业(浙江)有限公司

Dates

Publication Date
20260505
Application Date
20250612

Claims (5)

  1. 1. A collision-resistant mechanical seal for a water pump comprises a stationary ring and a moving ring and is characterized in that the moving ring is far away from one side of the stationary ring and is provided with a follower, one side of the follower is far away from the stationary ring and is provided with a driver, a spring is arranged between the follower and the driver, the spring is in a compressed state, the edge of the follower is provided with a driven shifting plate, the edge of the driver is provided with a driving shifting plate, the driven shifting plate and the driving shifting plate are alternately arranged, one end of the driven shifting plate is provided with a collision folded plate, the collision folded plate and the driven shifting plate are of an integrated structure, and the center of the driver is provided with a connecting hole in a penetrating mode.
  2. 2. The collision-resistant mechanical seal for a water pump according to claim 1, wherein a first limit groove is formed in one side of the follower, the movable ring is located in the first limit groove, the movable ring and the first limit groove are both hexagonal, a second limit groove is formed in the other side of the follower, and one end of the spring is located in the second limit groove.
  3. 3. The collision-resistant mechanical seal for a water pump of claim 1, wherein the driving poking plate is provided with a limiting convex plate at one end, and the driven poking plate is positioned inside the limiting convex plate.
  4. 4. The collision-resistant mechanical seal for a water pump according to claim 1, wherein the number of the driving poking plates and the driven poking plates is 3, and the driving poking plates and the driven poking plates are arranged in an annular array.
  5. 5. The collision-resistant mechanical seal for a water pump of claim 1, wherein an inner seal ring is arranged inside the moving ring, and an outer seal ring is arranged on one side of the stationary ring away from the moving ring.

Description

Collision-resistant mechanical seal for water pump Technical Field The utility model relates to the technical field of mechanical sealing, in particular to a collision-resistant mechanical seal for a water pump. Background The water pump is a common device in industrial and agricultural activities, in the working process, the rotating shaft drives the impeller to rotate, water is guided to enter and exit from the water inlet pipe through internal and external pressure differences until all conveying work is completed, mechanical sealing is required to be arranged between a specific position of the rotating shaft and the water pump to avoid water entering an electric part of the water pump, the mechanical sealing achieves an expected sealing effect through dynamic bonding and relative rotation of the moving ring and the static ring, the dynamic bonding of the moving ring and the static ring is realized through springs kept in a compressed state, sheet metal structures are respectively arranged at two ends of the springs and respectively connected with the rotating shaft and the moving ring, the sheet metal at the rotating shaft end is stirred by the sheet metal at the moving ring end, so that transmission is realized, after the rotating shaft stops at the end of work, the sheet metal at the rotating shaft end stops along with the rotating shaft, the sheet metal at the moving ring end stops again due to inertia, the small distance can cause the sheet metal at the moving ring end to collide with the sheet metal at the rotating shaft end, the probability of mechanical sealing damage is obviously improved, however, the small distance is not avoided, based on the situation, the mechanical sealing strength can be enhanced, the probability of damage is reduced, and the problem to be more and more the problem needs to be solved by related technicians. Disclosure of Invention In order to solve the technical problems, the utility model provides a collision-resistant mechanical seal for a water pump. A collision-resistant mechanical seal for a water pump comprises a stationary ring and a moving ring and is characterized in that the moving ring is far away from one side of the stationary ring and is provided with a follower, one side of the follower is far away from the stationary ring and is provided with a driver, a spring is arranged between the follower and the driver, the spring is in a compressed state, the edge of the follower is provided with a driven shifting plate, the edge of the driver is provided with a driving shifting plate, the driven shifting plate and the driving shifting plate are alternately arranged, one end of the driven shifting plate is provided with a collision folded plate, the collision folded plate and the driven shifting plate are of an integrated structure, and the center of the driver is provided with a connecting hole in a penetrating mode. Further, a first limit groove is formed in one side of the follower, the movable ring is located inside the first limit groove, the movable ring and the first limit groove are both hexagonal, a second limit groove is formed in the other side of the follower, and one end of the spring is located inside the second limit groove. Further, a limiting convex plate is arranged at one end of the driving shifting plate, and the driven shifting plate is located on the inner side of the limiting convex plate. Further, the number of the driving shifting plate and the driven shifting plate is 3, and the driving shifting plate and the driven shifting plate are all arranged in an annular array. Further, an inner sealing ring is arranged inside the movable ring, and an outer sealing ring is arranged on one side, away from the movable ring, of the stationary ring. The collision-resistant mechanical seal for the water pump has the beneficial effects that: The driven shifting plate is located the limit protruding plate inboard, the spacing effect that spring one end is located the inside of second spacing groove combines the spring to be in compressed state, the stability of moving ring and quiet ring developments laminating has been guaranteed effectively, the annular array setting of initiative shifting plate, driven shifting plate combines and alternate arrangement, the driven stability has been guaranteed effectively, this mechanical seal's sealed effect has been guaranteed effectively from this, on this basis, even the pivot stall back follower can continue to rotate a short distance because of inertia and stall again, and consequently, lead to follower and initiative ware to collide, collision folded plate also can bear this collision steadily, thereby strengthened this mechanical seal's intensity effectively, damage probability has been reduced effectively. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will simply describe the drawings used in the emb