CN-224214700-U - Mechanical seal combined structure for anti-leakage reinforced pump

CN224214700UCN 224214700 UCN224214700 UCN 224214700UCN-224214700-U

Abstract

The utility model discloses a mechanical seal combined structure for a leakage-proof reinforced pump, which comprises a movable ring and a stationary ring, wherein the movable ring is sleeved on a rotating shaft, a spring seat is fixedly connected to the rotating shaft, a first spring is fixedly connected to the spring seat, a partition plate is fixedly connected to one end of the first spring, which is far away from the spring seat, the movable ring is fixedly connected to the partition plate, the stationary ring is arranged on a first end cover, the movable ring is abutted against the stationary ring, the first end cover is fixedly connected to a shell, the seal reinforcing assembly comprises a second end cover, the second end cover is fixedly connected to the first end cover, a buffer cavity is formed between the second end cover and the first end cover, a drain hole is formed in the second end cover, the drain hole is communicated with the buffer cavity, a sealing cover is arranged on the drain hole, an annular sealing plate is sleeved on the rotating shaft, and a sealing ring I is arranged between the second end cover and the rotating shaft. According to the utility model, the buffer cavity and the annular sealing plate are used for realizing further sealing of the pump body, so that the sealing stability is improved, and the pump body is safer in practical use.

Inventors

Lei Mengxin
SONG WENHAN
WANG LU
ZHAO SITONG
ZHANG DAITING
Niu Chenyi
Cun Ruizhe

Assignees

西安航空学院

Dates

Publication Date: 20260508
Application Date: 20250626

Claims (7)

1. A mechanical seal assembly for a leak-proof enhanced pump, comprising: The rotating ring (1) is sleeved on the rotating shaft (3), a spring seat (4) is fixedly connected to the rotating shaft (3), a first spring (5) is fixedly connected to the spring seat (4), a partition plate (23) is fixedly connected to one end, away from the spring seat (4), of the first spring (5), the rotating ring (1) is fixedly connected to the partition plate (23), the stationary ring (2) is mounted on a first end cover (6), the rotating ring (1) is abutted to the stationary ring (2), the first end cover (6) is fixedly connected to the shell (7), a first shaft hole is formed in the first end cover (6), and the rotating shaft (3) penetrates through the shaft hole; The sealing reinforcing assembly comprises a second end cover (8), a second shaft hole is formed in the second end cover (8), the rotating shaft (3) is arranged in the second shaft hole in a penetrating mode, the second end cover (8) is fixedly connected to the first end cover (6), a buffer cavity (9) is formed between the second end cover (8) and the first end cover (6), a drain hole (10) is formed in the second end cover (8), the drain hole (10) is communicated with the buffer cavity (9), a sealing cover (11) is arranged on the drain hole (10), an annular sealing plate (12) is sleeved on the rotating shaft (3), the annular sealing plate (12) is arranged in the buffer cavity (9), and a sealing ring I (13) is arranged between the second end cover (8) and the rotating shaft (3).
2. The mechanical seal combined structure for the leakage-proof reinforced pump, as set forth in claim 1, is characterized in that a first annular plate (14) is fixedly connected in the second end cover (8), a third shaft hole is formed in the first annular plate (14), the side wall of the third shaft hole is obliquely arranged, a conical sealing ring (15) is sleeved on the rotating shaft (3), and the conical sealing ring (15) is located in the third shaft hole.
3. The mechanical seal combined structure for the leakage-proof reinforced pump, as set forth in claim 2, characterized in that an annular top plate (16) is fixedly connected to the annular sealing plate (12), a second annular plate (17) is fixedly connected to the annular top plate (16), and the second annular plate (17) is abutted against the conical sealing ring (15).
4. A mechanical seal assembly for a leak-proof reinforced pump as defined in claim 3, wherein a second spring (22) is provided between said second annular plate (17) and said first annular plate (14).
5. A mechanical seal combined structure for a leakage-proof reinforced pump according to claim 1, wherein a plurality of second sealing rings (18) and a plurality of third sealing rings (19) are arranged on the annular sealing plate (12), the second sealing rings (18) are positioned between the annular sealing plate (12) and the rotating shaft (3), and the third sealing rings (19) are positioned between the second end cover (8) and the annular sealing plate (12).
6. The mechanical seal assembly structure for a leakage-proof reinforced pump according to claim 1, wherein a sealing ring IV (20) is installed between the second end cover (8) and the first end cover (6).
7. The mechanical seal combined structure for the leakage-proof reinforced pump, as set forth in claim 1, is characterized in that a seal ring five (21) is installed between the stationary ring (2) and the first end cover (6), and a seal ring six (24) is installed between the first end cover (6) and the housing (7).

Description

Mechanical seal combined structure for anti-leakage reinforced pump Technical Field The utility model relates to the technical field of mechanical seal structures, in particular to a mechanical seal combined structure for a leakage-proof reinforced pump. Background In the fields of petrochemical industry, pharmacy, energy and other industries, pump equipment is used as a core device for fluid delivery, and the operation stability and sealing performance of the pump equipment directly influence the production safety and environmental protection benefits. The mechanical seal is used as a key component of the pump, and the axial seal is realized by the joint of the end surfaces of the movable ring and the static ring, so that the mechanical seal plays an important role in preventing medium leakage and resisting external pollution. The conventional mechanical seal mostly adopts a single-end surface friction pair structure, but under the condition of high speed or variable working conditions, the moving ring has poor following property, and the moving ring and the static ring are easy to cause instantaneous separation of end surfaces due to axial movement or vibration, so that sudden leakage is caused. Therefore, a mechanical seal combined structure for a leakage-proof reinforced pump is provided to solve the problems. Disclosure of utility model The utility model aims to provide a mechanical seal combined structure for a leakage-proof reinforced pump, which solves the problems in the prior art, can cope with the condition of abrupt change of working conditions and prevents sudden leakage. In order to achieve the above object, the present utility model provides a mechanical seal assembly structure for a leak-proof reinforced pump, comprising: The rotating shaft is sleeved with a rotating ring and a stationary ring, a spring seat is fixedly connected to the rotating shaft, a first spring is fixedly connected to the spring seat, a partition plate is fixedly connected to one end, away from the spring seat, of the first spring, and the rotating ring is fixedly connected to the partition plate; The seal reinforcing assembly comprises a second end cover, a second shaft hole is formed in the second end cover, the rotating shaft penetrates through the second shaft hole, the second end cover is fixedly connected to the first end cover, a buffer cavity is formed between the second end cover and the first end cover, a drain hole is formed in the second end cover, the drain hole is communicated with the buffer cavity, a sealing cover is mounted on the drain hole, an annular sealing plate is sleeved on the rotating shaft, the annular sealing plate is located in the buffer cavity, and a sealing ring I is arranged between the second end cover and the rotating shaft. Preferably, the first annular plate is fixedly connected in the second end cover, a third shaft hole is formed in the first annular plate, the side wall of the third shaft hole is obliquely arranged, a conical sealing ring is sleeved on the rotating shaft, and the conical sealing ring is located in the third shaft hole. Preferably, an annular top plate is fixedly connected to the annular sealing plate, a second annular plate is fixedly connected to the annular top plate, and the second annular plate is abutted to the conical sealing ring. Preferably, a second spring is arranged between the second annular plate and the first annular plate. Preferably, the annular sealing plate is provided with a plurality of second sealing rings and a plurality of third sealing rings, the second sealing rings are positioned between the annular sealing plate and the rotating shaft, and the third sealing rings are positioned between the second end cover and the annular sealing plate. Preferably, a sealing ring IV is arranged between the second end cover and the first end cover. Preferably, a sealing ring five is arranged between the stationary ring and the first end cover, and a sealing ring six is arranged between the first end cover and the shell. The utility model discloses the following technical effects that in the device, a spring seat is used for installing a first spring, the first spring is used for supporting a baffle plate, so that a movable ring and a stationary ring are tightly attached together, a buffer cavity in a second end cover is used for buffering liquid flowing out of a shell, if leakage exists at the movable ring and the stationary ring, the leaked liquid can flow into the buffer cavity, a drain hole is used for discharging the liquid in the buffer cavity, a sealing cover can be opened during maintenance, an annular sealing plate plays a sealing role to prevent the liquid from continuously leaking, and a sealing ring I is used for sealing a rotating shaft and the second end cover and can further prevent the liquid from leaking. According to the utility model, the buffer cavity and the annular sealing plate are used for realizing further sealing of the pump body,