Mechanical sealing mechanism with high reliability

Abstract

The utility model provides a mechanical sealing mechanism with high reliability, which comprises a hot jacket static ring, a hot jacket moving ring, a spring and a spring seat, a static sealing ring is sleeved at one end of the hot jacket static ring, a moving sealing ring is arranged on the inner wall of the hot jacket moving ring, a first sleeving part is arranged at one end of the hot jacket moving ring far away from the hot jacket static ring, and a second sleeving part is arranged at the other end of the hot jacket moving ring far away from the spring seat. A first sleeving part is arranged at the end, close to the hot sleeve moving ring, of the spring seat, a second sleeving part is arranged at the end, close to the hot sleeve moving ring, of the spring seat, the two ends of the spring are arranged on the first sleeving part and the second sleeving part in a sleeving mode correspondingly, fixing plates are arranged on the two sides of the end, opposite to the spring seat, of the hot sleeve moving ring correspondingly, and fixing grooves are formed in the two sides of the diametric plane of the first sleeving part and the diametric plane of the second sleeving part correspondingly. The multiple fixing plates are arranged on the two side portions of the two ends of the spring in a bent and annular mode and embedded into the fixing grooves in a clamped mode. The two ends of the spring are fixed to the hot jacket moving ring and the spring seat through cooperation of the fixing plate and the fixing groove, the phenomenon that the spring and the spring seat are prone to dislocation, deviation or looseness in the using process is avoided, and reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal mechanism with high reliability. Background Art

[0002] Mechanical seal, also known as end seal, is a device used in rotating mechanical shaft sealing devices to prevent fluid leakage. It consists of at least one pair of end faces perpendicular to the axis of rotation, which are kept in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, as well as the cooperation of auxiliary seals. Mechanical seals are widely used in centrifugal pumps, centrifuges, reactors, compressors and other equipment. Due to its advantages such as low leakage and long service life, it has become the most important shaft sealing method for these equipment.

[0003] The spring and spring seat of a mechanical seal are usually split. The spring is usually an independent component used to provide compression, while the spring seat is another separate component used to support the spring and fix it in place. This split design makes it easy to replace worn springs or adjust the pressure of the spring without affecting other sealing components.

[0004] However, since the spring and the spring seat are of a split structure and there is no fixing mechanism between the spring and the spring seat, the spring and the spring seat are prone to misalignment or looseness during use, which is not conducive to use. Utility Model Content

[0005] The utility model provides a mechanical sealing mechanism with high reliability to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A mechanical sealing mechanism with high reliability comprises a heat-shrink static ring, a heat-shrink dynamic ring, a spring and a spring seat, wherein a static sealing ring is sleeved on one end of the heat-shrink static ring, a dynamic sealing ring is sleeved on the inner wall of the heat-shrink dynamic ring, a first sleeve connection portion is provided on the end of the heat-shrink dynamic ring away from the heat-shrink static ring, a second sleeve connection portion is provided on the end of the spring seat close to the heat-shrink dynamic ring, two ends of the spring are sleeved on the first sleeve connection portion and the second sleeve connection portion respectively, fixing plates are provided on both sides of the opposite ends of the heat-shrink dynamic ring and the spring seat, fixing grooves are provided on both sides of the radial surfaces of the first sleeve connection portion and the second sleeve connection portion, and a plurality of fixing plates are bent and ring-arranged on both sides of the two ends of the spring and are embedded in the fixing grooves.

[0008] Preferably, grooves are provided on the surfaces of the fixing plates.

[0009] Preferably, the spring seat diameter surface is provided with a plurality of screw holes, and locking screws are threadedly connected in the plurality of screw holes. Preferably, the fixing plate and the fixing slot are located relative to each other.

[0010] Beneficial Effects

[0011] The above one or more technical solutions in a mechanical sealing mechanism with high reliability provided by the embodiment of the utility model have at least one of the following technical effects:

[0012] Through the above technical scheme, a plurality of fixing plate rings are arranged on both sides of the two ends of the spring and embedded in the fixing groove, so that the two ends of the spring are fixed to the heat-fitting ring and the spring seat respectively, avoiding the misalignment or loosening between the spring and the spring seat during use, thereby improving the reliability of the mechanical seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a side view of the structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the thermal sleeve moving ring of the utility model;

[0016] Figure 4 This is a schematic diagram of the spring seat structure of the utility model;

[0017] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0018] 1. Shrink-fit static ring; 2. Shrink-fit dynamic ring; 3. Spring; 4. Spring seat; 5. Static sealing ring; 6. Dynamic sealing ring; 7. First sleeve connection; 8. Second sleeve connection; 9. Fixing plate; 10. Fixing groove; 11. Notch; 12. Screw hole; 13. Locking screw. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1-4 As shown, it is a structural schematic diagram of a mechanical sealing mechanism with high reliability in a preferred embodiment of the utility model;

[0023] In this embodiment, it includes a heat-shrink static ring 1, a heat-shrink dynamic ring 2, a spring 3, and a spring seat 4. The heat-shrink static ring 1, the heat-shrink dynamic ring 2, the spring 3, and the spring seat 4 are arranged in sequence from left to right. One end of the heat-shrink static ring 1 is sleeved with a static sealing ring 5, and the inner wall of the heat-shrink dynamic ring 2 is embedded with a dynamic sealing ring 6. The end of the heat-shrink dynamic ring 2 away from the heat-shrink static ring 1 is integrally provided with a first sleeve connection portion 7, and the end of the spring 3 seat close to the heat-shrink dynamic ring 2 is integrally provided with a second sleeve connection portion 8. The two ends of the spring 3 are respectively sleeved on the On the first sleeve joint 7 and the second sleeve joint 8, the two ends of the spring 3 are respectively abutted against the heat sleeve ring 2 and the spring seat 4, and fixing plates 9 are provided on both sides of the opposite ends of the heat sleeve ring 2 and the spring seat 4. The first sleeve joint 7 and the second sleeve joint 8 are provided with fixing grooves 10 on both sides of the radial surface, and the number of fixing plates 9 and fixing grooves 10 is the same. A plurality of the fixing plates 9 are bent and arranged on both sides of the two ends of the spring 3 and are embedded in the fixing grooves 10 to fix the two ends of the spring 3 to the heat sleeve ring 2 and the spring seat 4, respectively.

[0024] In this embodiment, grooves 11 are provided on the surface of the fixing plate 9 , and the grooves 11 facilitate bending of the fixing plate 9 .

[0025] In this embodiment, the radial surface of the spring seat 4 is provided with a plurality of screw holes 12 , and locking screws 13 are threadedly connected in the plurality of screw holes 12 , and the spring seat 4 is locked and fixed on the device shaft by the locking screws 13 .

[0026] In this embodiment, the fixing plate 9 and the fixing groove 10 are positioned opposite to each other, so that the fixing plate 9 and the fixing groove 10 are used in coordination with each other.

[0027] The utility model provides a mechanical sealing mechanism with high reliability. Its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0028] Technologies not described in detail in the present invention are all well-known technologies. Those skilled in the art can easily implement the present invention based on understanding this specification, and the contents shown in the drawings are part of this specification.

[0029] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A mechanical sealing mechanism with high reliability, comprising a shrink-fit static ring (1), a shrink-fit dynamic ring (2), a spring (3), and a spring seat (4), characterized in that: A static sealing ring (5) is sleeved on one end of the heat-shrink static ring (1), a dynamic sealing ring (6) is provided on the inner wall of the heat-shrink dynamic ring (2), a first sleeve connection portion (7) is provided on the end of the heat-shrink dynamic ring (2) away from the heat-shrink static ring (1), a second sleeve connection portion (8) is provided on the end of the spring (3) seat close to the heat-shrink dynamic ring (2), two ends of the spring (3) are sleeved on the first sleeve connection portion (7) and the second sleeve connection portion (8), respectively, fixing plates (9) are provided on both sides of the opposite ends of the heat-shrink dynamic ring (2) and the spring seat (4), fixing grooves (10) are provided on both sides of the radial surfaces of the first sleeve connection portion (7) and the second sleeve connection portion (8), and a plurality of fixing plates (9) are bent and arranged on both sides of the two ends of the spring (3) and are embedded in the fixing grooves (10).

2. A mechanical sealing mechanism with high reliability according to claim 1, characterized in that: The surfaces of the fixing plates (9) are all provided with grooves (11).

3. A mechanical sealing mechanism with high reliability according to claim 1, characterized in that: The spring seat (4) is provided with a plurality of screw holes (12) on its radial surface, and locking screws (13) are threadedly connected in the plurality of screw holes (12).

4. A mechanical sealing mechanism with high reliability according to claim 1, characterized in that: The fixing plate (9) and the fixing groove (10) are located opposite to each other.

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