CN220566569U - Fixing structure for sealing assembly - Google Patents

Abstract

The utility model discloses a fixing structure for a sealing assembly, which belongs to the technical field of mechanical sealing and fixing, and comprises a main shaft, wherein a ring seat is arranged outside the main shaft, a sealing caulking groove is formed in the ring of the ring seat, a sealing ring is arranged in the sealing caulking groove, the arranged fixing mechanism is matched with the main shaft for use, after the main shaft passes through the sealing ring in the ring seat, the fixing ring is screwed into the ring seat through a protruding strip arranged on the outer wall of the fixing ring and is connected with an external thread on the ring seat through an internal thread, in the process, a pressing rod protruding from four sides of the outer wall of the ring seat enters the ring seat and forces a compression spring to stretch, so that an arc plate is propped against the four sides of the outer wall of the sealing ring, the sealing ring and the main shaft are tightly attached together, and the sealing ring can be prevented from shaking in the process of driving the sealing ring to rotate by the main shaft, so that the sealing assembly can effectively seal the ring seat, and the sealing assembly is fixed.

Description

Fixing structure for sealing assembly

Technical Field

The utility model relates to the technical field of mechanical seal fixation, in particular to a fixing structure for a seal assembly.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end surfaces perpendicular to a rotation axis and keeping fit and relatively sliding under the action of fluid pressure and the elastic force of a compensation mechanism and the cooperation of an auxiliary seal, and is a shaft seal device of a rotary machine. Such as centrifugal pumps, centrifuges, kettles, compressors and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks outwardly, and if the pressure in the apparatus is below atmospheric pressure, air leaks into the apparatus, and therefore a shaft seal means for preventing leakage is necessary, and it is also necessary to fix it when using the mechanical seal assembly.

In the prior art, when the shaft seal leakage is realized on the transmission shaft by the existing sealing assembly, the transmission shaft can drive the sealing ring in the sealing assembly to rotate in the rotating process, and the sealing ring is driven to rotate in the rotating process because of lacking of fixed structure measures, so that the sealing ring can shake in the rotating process along with the main shaft, and then the shaft seal effect of the transmission shaft can be reduced by the gap generated during shaking.

Disclosure of Invention

The utility model mainly aims to provide a fixing structure for a sealing assembly, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a seal assembly is with fixed knot constructs, includes the main shaft, the outside of main shaft is equipped with the ring seat, and has seted up sealed caulking groove in the intra-annular of ring seat, the inside of sealed caulking groove is equipped with the sealing ring, the outside of sealing ring is equipped with fixed establishment, and fixed establishment includes solid fixed ring, arc, boss, depression bar and compression spring, gu fixedly connected with compression spring in the four sides of the inslot wall of sealed caulking groove, and the arc passes through boss fixed connection on the outer wall in compression spring's bottom, depression bar fixed connection is at the top surface of boss and is located compression spring, gu fixed ring passes through the internal thread fixed connection on the ring inner wall in the outside of ring seat.

Preferably, grooves are respectively formed in four sides of the inner wall of the sealing caulking groove, sliding grooves are respectively formed in two side walls of the groove, and through holes are further formed in the top surface of the groove.

Preferably, a limiting ring is fixedly arranged on the left side of the outer ring wall of the ring seat, and external threads are formed on the right side of the outer ring wall of the ring seat.

Preferably, a plurality of protruding strips are fixedly arranged on the outer ring wall of the fixed ring in an annular array mode, and inner threads corresponding to the outer threads are formed on the inner ring wall of the fixed ring.

Preferably, the sealing caulking groove is annular, and the sealing ring is embedded in the groove of the sealing caulking groove.

Preferably, the four arc-shaped plates are combined to form a ring shape and are clung to the outer wall of the sealing ring, a boss is fixedly arranged on the outer side wall of the arc-shaped plate, sliding blocks are fixedly arranged on two sides of the boss respectively, the sliding blocks are movably arranged in the sliding grooves, a pressing rod is fixedly arranged on the top surface of the boss, the pressing rod is installed in the through holes in a penetrating mode, a compression spring is sleeved outside the pressing rod, and the compression spring is fixedly arranged between the top surface of the boss and the top surface in the groove of the groove.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the fixing mechanism is matched with the main shaft, after the main shaft passes through the sealing ring in the ring seat, the fixing ring is screwed into the ring seat through the protruding strip arranged on the outer wall of the fixing ring and is connected with the external thread on the ring seat through the internal thread, and in the process, the pressing rods protruding from the four sides of the outer wall of the ring seat are extruded into the ring seat to force the compression springs to stretch, so that the arc plates are pressed against the four sides of the outer wall of the sealing ring, the sealing ring is tightly adhered with the main shaft, and further, the problem of shaking of the sealing ring can be prevented in the process of driving the sealing ring to rotate by the main shaft, so that the sealing assembly has an effective sealing effect on the ring seat and the purpose of fixing the sealing group is achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the overall structure of the present utility model in section;

fig. 3 is a schematic view illustrating the structure of the fixing mechanism according to the present utility model.

In the figure: 1. a main shaft; 2. a ring seat; 3. a seal ring; 4. a fixing mechanism; 5. sealing the caulking groove; 6. a groove; 7. a chute; 8. a through hole; 9. a limiting ring; 10. an external thread; 11. a fixing ring; 12. a protruding strip; 13. an internal thread; 14. an arc-shaped plate; 15. a boss; 16. a slide block; 17. a compression bar; 18. compressing the spring.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-3, a fixing structure for a seal assembly comprises a main shaft 1, wherein a ring seat 2 is arranged outside the main shaft 1, a seal caulking groove 5 is formed in a ring of the ring seat 2, a seal ring 3 is arranged inside the seal caulking groove 5, a fixing mechanism 4 is arranged outside the seal ring 3, the fixing mechanism 4 comprises a fixing ring 11, an arc plate 14, a boss 15, a compression rod 17 and a compression spring 18, the compression spring 18 is fixedly connected to four sides of the inner wall of the groove of the seal caulking groove 5, the arc plate 14 is fixedly connected to the bottom end of the compression spring 18 through the boss 15 on the outer wall, the compression rod 17 is fixedly connected to the top surface of the boss 15 and is positioned in the compression spring 18, and the fixing ring 11 is fixedly connected to the outside of the ring seat 2 through an internal thread 13 on the inner wall of the ring.

As shown in fig. 1-3, in this embodiment, in order to prevent the sealing ring 3 that plays a role in bearing on the spindle 1 from shaking during rotation of the spindle 1 by the fixing mechanism 4, and improve the shaft sealing effect on the spindle 1, grooves 6 are respectively formed on four sides of the inner wall of the sealing caulking groove 5, sliding grooves 7 are respectively formed on two side walls of the groove 6, through holes 8 are further formed on the top surface of the groove 6, a limiting ring 9 is fixedly mounted on the left side of the outer wall of the ring seat 2, external threads 10 are formed on the right side of the outer wall of the ring seat 2, a plurality of protruding strips 12 are fixedly mounted on the outer wall of the fixing ring 11 in a ring array manner, internal threads 13 corresponding to the external threads 10 are formed on the inner wall of the fixing ring 11, the sealing caulking groove 5 is in a ring shape, the sealing caulking groove 3 is embedded and mounted in the groove 5, four arc plates 14 are combined and then are tightly attached to the outer wall of the sealing ring 3, bosses 15 are fixedly mounted on the outer side walls of the arc plates 14, sliding blocks 16 are fixedly mounted on the two sides of the bosses 15, a sliding block 16 are movably mounted on the two sides of the sliding blocks 16, a compression boss 17 is movably mounted on the top surface of the compression boss 17, a compression boss 17 is mounted on the compression boss 18, and the compression boss 17 is mounted on the compression boss 18 is fixedly mounted on the top surface between the compression boss 17 and the compression boss 18;

the specific use principle of the fixing mechanism 4 matched with the upper main shaft 1 through the sealing ring 3 is as follows: after the main shaft 1 passes through the ring seat 2 and the sealing caulking groove 5 formed in the ring of the ring seat 2, the sealing ring 3 and the fixing ring 11 are embedded and installed, the fixing ring 11 is screwed and installed on the outer wall of the ring seat 2 through the anti-slip protrusions formed by the plurality of protruding strips 12 installed on the outer wall of the ring 11 in a ring array mode, the internal threads 13 formed on the inner part of the ring of the fixing ring 11 are connected with the external threads 10 formed on the right side of the outer wall of the ring seat 2 in a screwing and installing process of the fixing ring 11 on the outer wall of the ring seat 2, after the fixing ring 11 is continuously screwed in, the fixing ring 11 extrudes the compression bar 17 protruding from four sides of the outer wall of the ring seat 2, the compression bar 17 enters the through holes 8 formed on the inner top surfaces of the grooves 6 formed on four sides of the inner wall of the sealing caulking groove 5 after being extruded, because the compression bar 17 is fixedly arranged on the top surface of the boss 15 arranged on the outer side wall of the arc plate 14, the compression bar 17 pushes the arc plate 14 positioned in the sealing caulking groove 5 in the process of being extruded and entered, the boss 15 moves downwards in the groove 6, the sliding blocks 16 arranged on two sides of the boss 15 slide in the sliding grooves 7 arranged on two sides of the inner wall of the groove 6, at the moment, the compression springs 18 arranged between the top surface of the boss 15 and the inner top surface of the groove 6 are forced to perform stretching operation, the arc plates 14 on four sides of the outer wall of the sealing ring 3 simultaneously squeeze the sealing ring 3 towards the inner side direction, so that the sealing ring 3 is tightly attached with the main shaft 1, the limiting ring 9 arranged on the left side of the outer wall of the ring seat 2 is continuously rotated and fixed by the fixing ring 11, and the sealing ring 3 can be prevented from shaking in the process of driving the sealing ring 3 to rotate by the main shaft 1, so as to ensure that the sealing assembly has an effective sealing effect on the main shaft 1 and achieve the aim of fixing the sealing group.

The foregoing is only illustrative of the preferred embodiments of the present utility model and, although the present utility model has been described in detail with reference to the foregoing embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and equivalents of the features may be substituted for elements thereof without departing from the true spirit and scope of the utility model.

Claims (6)

1. The utility model provides a fixed knot constructs for seal assembly, includes main shaft (1), the outside of main shaft (1) is equipped with ring seat (2), and has seted up sealed caulking groove (5) in the intra-annular of ring seat (2), the inside of sealed caulking groove (5) is equipped with sealing ring (3), its characterized in that: the outside of sealing ring (3) is equipped with fixed establishment (4), and fixed establishment (4) are including solid fixed ring (11), arc (14), boss (15), depression bar (17) and compression spring (18), gu fixed connection has compression spring (18) in the inslot wall four sides of sealed caulking groove (5), and arc (14) are through boss (15) fixed connection on the outer wall in the bottom of compression spring (18), depression bar (17) fixed connection is at the top surface of boss (15) and be located compression spring (18), gu fixed ring (11) are through internal thread (13) fixed connection on the ring inner wall in the outside of ring seat (2).

2. A fixing structure for a seal assembly according to claim 1, wherein: grooves (6) are respectively formed in four sides of the inner wall of the sealing caulking groove (5), sliding grooves (7) are respectively formed in two side walls of the groove (6), and through holes (8) are further formed in the top surface of the groove (6).

3. A fixing structure for a seal assembly according to claim 2, wherein: the left side of the outer ring wall of the ring seat (2) is fixedly provided with a limiting ring (9), and the right side of the outer ring wall of the ring seat (2) is provided with an external thread (10).

4. A fixing structure for a seal assembly according to claim 3, wherein: a plurality of protruding strips (12) are fixedly arranged on the outer ring wall of the fixed ring (11) in a ring array mode, and internal threads (13) corresponding to the external threads (10) are formed on the inner ring wall of the fixed ring (11).

5. The fixing structure for a seal assembly according to claim 4, wherein: the sealing caulking groove (5) is annular, and the sealing ring (3) is embedded and installed in the groove of the sealing caulking groove (5).

6. A seal assembly securing structure as defined in claim 5, wherein: four arc (14) are combined and then are annular and are clung to the outer wall of the sealing ring (3), a boss (15) is fixedly installed on the outer side wall of the arc (14), sliding blocks (16) are fixedly installed on two sides of the boss (15) respectively, the sliding blocks (16) are movably installed in the sliding grooves (7), a pressing rod (17) is fixedly installed on the top surface of the boss (15), the pressing rod (17) is installed in the through hole (8) in a penetrating mode, a compression spring (18) is sleeved outside the pressing rod (17), and the compression spring (18) is fixedly installed between the top surface of the boss (15) and the inner top surface of the groove (6).