Mechanical sealing device for pump body

Abstract

The utility model discloses a mechanical sealing device for a pump body, which comprises a rotating shaft, a shaft sleeve is arranged outside the rotating shaft, a circular ring connecting seat is fixedly sleeved on the outer wall of the shaft sleeve, a connecting bolt is arranged on the circular ring connecting seat in a penetrating manner, a movable ring is sleeved outside the shaft sleeve, a threaded hole matched with the connecting bolt is arranged at the side part of the movable ring, and the threaded hole is matched with the connecting bolt. The shaft sleeve is sleeved with a gland, a mounting hole is formed in the outer portion of the gland, a static ring containing groove is formed in the gland, a static ring is arranged in the static ring containing groove, and the opposite faces of the static ring and the moving ring are attached. By means of the arrangement, the sealing performance between the rotating shaft and the pump body can be effectively improved, and efficient transportation work of fluid is guaranteed.

Description

Technical Field

[0001] The utility model relates to a mechanical sealing device for a pump body. Background Art

[0002] A pump is a machine that transports or pressurizes fluids. It consists of a pump casing and a rotating shaft. When the pump is activated, it drives the rotating shaft to rotate. A gap exists between the rotating shaft and the pump casing. To prevent leakage through this gap, a mechanical seal is required. Existing mechanical seals have a simple structure and offer poor sealing performance at the connection between the rotating shaft and the pump casing. This can result in a small amount of fluid leakage during operation, making it difficult to ensure efficient fluid transport.

[0003] Therefore, it is necessary to provide a mechanical sealing device for a pump body to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a mechanical sealing device for a pump body, so as to solve the problems raised in the above background technology.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A mechanical sealing device for a pump body comprises a rotating shaft, a shaft sleeve is provided on the outside of the rotating shaft, a circular ring connecting seat is fixedly sleeved on the outer wall of the shaft sleeve, a connecting bolt is passed through the circular ring connecting seat, a dynamic ring is sleeved on the outside of the shaft sleeve, a threaded hole matching the connecting bolt is provided on the side of the dynamic ring, a pressure cover is sleeved on the outside of the shaft sleeve, a mounting hole is opened on the outside of the pressure cover, a static ring placement groove is provided in the pressure cover, a static ring is provided in the static ring placement groove, and the static ring fits against the opposite side of the dynamic ring.

[0007] Preferably, an outer annular sealing ring is provided on the outer ring surface of the static ring, and the outer annular sealing ring is located inside the static ring placement groove.

[0008] Preferably, an inner ring sealing ring is provided on the inner ring surface of the dynamic ring, and the inner ring sealing ring is sleeved on the outside of the shaft sleeve.

[0009] Preferably, a plurality of the connecting bolts are provided, and the plurality of connecting bolts are distributed in a circular array about the central axis of the sleeve, and the threaded holes are provided corresponding to the connecting bolts.

[0010] Preferably, an O-ring groove is provided inside the shaft sleeve, an O-ring is provided in the O-ring groove, and the O-ring is sleeved on the outside of the rotating shaft.

[0011] Preferably, the inner ring of the gland is provided with an embedded sealing ring, and the embedded sealing ring is sleeved on the outside of the shaft sleeve.

[0012] Preferably, a plurality of the mounting holes are provided, and the plurality of the mounting holes are distributed in a circular array about the central axis of the sleeve.

[0013] The beneficial effects of the present invention are as follows: when the rotating shaft rotates, the shaft sleeve is driven to rotate, and then the dynamic ring is driven to rotate, and the opposite side of the static ring and the dynamic ring are fitted together, so that the liquid in the pump body is sealed and stored between the shaft sleeve and the pump body, and the sealing between the shaft sleeve and the pressure cover can be improved by embedding the sealing ring, and the sealing between the static ring and the pressure cover can be improved by the outer circular sealing ring, and the sealing between the shaft sleeve and the dynamic ring can be improved by the inner circular sealing ring, and the sealing between the rotating shaft and the shaft sleeve can be improved by the O-ring groove and the O-shaped sealing ring, so as to prevent the liquid from flowing out through the gap between the rotating shaft and the shaft sleeve. In summary, the present sealing device can effectively improve the sealing between the rotating shaft and the pump body to ensure efficient transportation of the fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art, but this does not limit the scope of protection of the present invention.

[0015] Figure 1 A front cross-sectional view of the entire device provided by the utility model;

[0016] Figure 2 A three-dimensional diagram of the static ring provided by the utility model;

[0017] Figure 3 A right side view of the gland provided by the present invention;

[0018] Figure 4 This is a right side view of the circular connecting seat and the shaft sleeve provided by the utility model;

[0019] Figure 5 This is a front view of the entire device provided by the utility model.

[0020] Among them, 1. rotating shaft; 2. shaft sleeve; 3. circular ring connecting seat; 4. connecting bolts; 5. dynamic ring; 6. threaded hole; 7. pressure cover; 8. mounting hole; 9. static ring; 10. outer circular ring sealing ring; 11. inner circular ring sealing ring; 12. O-ring sealing ring; 13. embedded sealing ring. DETAILED DESCRIPTION

[0021] See Figures 1 to 5The mechanical sealing device for the pump body shown comprises a rotating shaft 1, an outer sleeve 2 is arranged outside the rotating shaft 1, a circular ring connecting seat 3 is fixedly sleeved on the outer wall of the outer sleeve 2, connecting bolts 4 are arranged through the circular ring connecting seat 3, a movable ring 5 is sleeved outside the outer sleeve 2, threaded holes 6 adapted to the connecting bolts 4 are arranged on the side of the movable ring 5, a gland 7 is sleeved outside the outer sleeve 2, mounting holes 8 are formed in the outer part of the gland 7, a stationary ring placing groove is arranged in the inner part of the gland 7, a stationary ring 9 is arranged in the stationary ring placing groove, and the stationary ring 9 is attached to the opposite side of the movable ring 5.

[0022] Further, an outer circular ring sealing ring 10 is arranged on the outer surface of the stationary ring 9, and the outer circular ring sealing ring 10 is arranged inside the stationary ring placing groove.

[0023] The outer circular ring sealing ring 10 can improve the sealing between the stationary ring 9 and the gland 7.

[0024] Further, an inner circular ring sealing ring 11 is arranged on the inner surface of the movable ring 5, and the inner circular ring sealing ring 11 is sleeved outside the outer sleeve 2.

[0025] The inner circular ring sealing ring 11 can improve the sealing between the outer sleeve 2 and the movable ring 5.

[0026] Further, a plurality of connecting bolts 4 are arranged, the plurality of connecting bolts 4 are arranged in a ring array about the central axis of the outer sleeve 2, and the threaded holes 6 are arranged correspondingly to the connecting bolts 4.

[0027] The plurality of connecting bolts 4 can improve the firmness of the connection between the movable ring 5 and the circular ring connecting seat 3.

[0028] Further, an O-ring groove is arranged inside the outer sleeve 2, an O-shaped sealing ring 12 is arranged in the O-ring groove, and the O-shaped sealing ring 12 is sleeved outside the rotating shaft 1.

[0029] The O-ring groove and the O-shaped sealing ring 12 can improve the sealing between the rotating shaft 1 and the outer sleeve 2, and prevent liquid from flowing out through the gap between the rotating shaft 1 and the outer sleeve 2.

[0030] Further, an embedded sealing ring 13 is arranged on the inner part of the gland 7, and the embedded sealing ring 13 is sleeved outside the outer sleeve 2.

[0031] The embedded sealing ring 13 can improve the sealing between the outer sleeve 2 and the gland 7.

[0032] Further, a plurality of mounting holes 8 are arranged, and the plurality of mounting holes 8 are arranged in a ring array about the central axis of the outer sleeve 2.

[0033] A corresponding number of bolts can pass through the plurality of mounting holes 8, and the firmness of the connection between the gland 7 and the pump body can be improved.

[0034] When the present invention is used, the rotating shaft 1 of the pump body is passed through the shaft sleeve 2, the dynamic ring 5 is sleeved on the outside of the shaft sleeve 2, and the connecting bolt 4 is screwed to make it threadedly connected with the threaded hole 6, thereby completing the fixed sleeve connection process of the dynamic ring 5 on the outside of the shaft sleeve 2, and then the static ring 9 is inserted into the static ring placement groove, and then the pressure cover 7 is sleeved on the outside of the shaft sleeve 2, and the pressure cover 7 can be installed in the appropriate position on the pump body through the mounting hole 8 with bolts, thereby completing the installation of the sealing device. When the rotating shaft 1 rotates, it drives the shaft sleeve 2 to rotate, and then drives the dynamic ring 5 to rotate, and the static ring 9 fits with the opposite side of the dynamic ring 5, so that the pump The liquid in the body is sealed and stored between the sleeve 2 and the pump body. By embedding the sealing ring 13, the sealing between the sleeve 2 and the pressure cover 7 can be improved. The sealing between the static ring 9 and the pressure cover 7 can be improved by the outer ring sealing ring 10. The sealing between the sleeve 2 and the dynamic ring 5 can be improved by the inner ring sealing ring 11. The sealing between the rotating shaft 1 and the sleeve 2 can be improved by the O-ring groove and the O-shaped sealing ring 12, and the liquid can be prevented from flowing out through the gap between the rotating shaft 1 and the sleeve 2. In summary, this sealing device can effectively improve the sealing between the rotating shaft 1 and the pump body to ensure efficient transportation of the fluid.

[0035] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that do not require creative work should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A mechanical sealing device for a pump body, characterized in that: It includes a rotating shaft, a shaft sleeve is provided on the outside of the rotating shaft, a circular ring connecting seat is fixedly sleeved on the outer wall of the shaft sleeve, a connecting bolt is passed through the circular ring connecting seat, a dynamic ring is sleeved on the outside of the shaft sleeve, a threaded hole compatible with the connecting bolt is provided on the side of the dynamic ring, a pressure cover is sleeved on the outside of the shaft sleeve, a mounting hole is opened on the outside of the pressure cover, a static ring placement groove is provided in the pressure cover, a static ring is provided in the static ring placement groove, and the static ring is fitted with the opposite side of the dynamic ring.

2. A mechanical sealing device for a pump body according to claim 1, characterized in that: An outer annular sealing ring is provided on the outer ring surface of the static ring, and the outer annular sealing ring is located inside the static ring placement groove.

3. A mechanical sealing device for a pump body according to claim 1, characterized in that: An inner ring sealing ring is provided on the inner ring surface of the dynamic ring, and the inner ring sealing ring is sleeved on the outside of the shaft sleeve.

4. A mechanical sealing device for a pump body according to claim 1, characterized in that: A plurality of connecting bolts are provided, and the connecting bolts are distributed in a circular array about the central axis of the sleeve, and the threaded holes are provided corresponding to the connecting bolts.

5. The mechanical sealing device for a pump body according to claim 1, characterized in that: An O-ring groove is provided inside the shaft sleeve, an O-shaped sealing ring is provided in the O-ring groove, and the O-shaped sealing ring is sleeved on the outside of the rotating shaft.

6. The mechanical sealing device for a pump body according to claim 1, characterized in that: The inner ring of the gland is provided with an embedded sealing ring, and the embedded sealing ring is sleeved on the outside of the shaft sleeve.

7. The mechanical sealing device for a pump body according to claim 1, characterized in that: There are a plurality of mounting holes, which are distributed in a circular array about the central axis of the sleeve.

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