CN213574793U - Multifunctional mechanical sealing device for flow guide sleeve - Google Patents

Abstract

A mechanical sealing device for a multifunctional flow guide sleeve is characterized in that an O-shaped ring of a shaft sleeve, a transmission ring, a movable ring and an O-shaped ring of the movable ring are arranged on the shaft sleeve, the shaft sleeve is connected with the transmission ring, a stationary ring and the O-shaped ring of the stationary ring are arranged on an inner gland, a push ring is arranged between the stationary ring and the flow guide sleeve, an anti-rotation pin is arranged on the inner gland, a push ring spring is arranged on the push ring, the flow guide sleeve is arranged at the position of the push ring spring, the movable ring, the O-shaped ring of the movable ring and the O-shaped ring of a movable ring seat are arranged on a movable ring seat and are fixed on the shaft sleeve through an axial check ring through the anti-rotation pin, an outer gland is arranged on the stationary ring, the O-shaped ring of the stationary ring is arranged between the stationary ring and the outer gland, a spring and the anti-rotation pin are arranged on the outer gland, a limiting block. The guide sleeve ensures that the medium side sealing spring force is effectively transmitted to the end face to achieve good fitting, ensures that the secondary sealing liquid can be circulated to the maximum extent, and saves the space inside the mechanical seal.

Description

Multifunctional mechanical sealing device for flow guide sleeve

Technical Field

The utility model relates to a mechanical seal device especially relates to a multi-functional water conservancy diversion cover mechanical seal device.

Background

At present, the pump seal which is inflammable, explosive, poisonous and harmful and has a narrow cavity space is used in the petrochemical industry and the chemical industry. Under the circumstances, because the medium itself is explosive, the characteristic that has the high toxicity, general conventional single-ended mechanical seal is difficult to satisfy the operation requirement, because the medium nature, it can take place the accident to reveal to the atmosphere, so increase two sealing protection at present stage, but because many pump chamber spaces are narrow and small, so at present many users generally use packing formula mechanical seal, the packing contacts with the axle for a long time, in the operation process, the packing can be by the pump shaft wearing and tearing, the pump shaft also can be because the looks mutual friction with the packing and damage, because the wearing and tearing of packing, the clearance of pump shaft and packing can be along with pump operation's process is bigger and bigger, it also can increase gradually to leak the volume, be difficult to satisfy the demand that customer's safety in production can ensure, increase the probability that the scene accident takes place.

Disclosure of Invention

The demand that needs to change into double mechanical seal device again to current mechanical seal device space is narrow and small and on-the-spot dielectric characteristic, the utility model provides an adopt integrated form structure, avoid the user because the mechanical seal that the installation problem caused loses efficacy, reduce the installation degree of difficulty, guarantee the multi-functional water conservancy diversion cover mechanical seal device of installation accuracy.

The concrete technical measures for solving the technical problems are as follows:

the utility model provides a multi-functional water conservancy diversion cover mechanical seal device which characterized by: an O-shaped ring 15 of a shaft sleeve is arranged at the inner diameter of the shaft sleeve 1, a transmission ring 4 is arranged at the tail part of the atmospheric side of the shaft sleeve 1, the shaft sleeve 1 is connected with the transmission ring 4 through a set screw 22, a medium side movable ring 11 and a medium side movable ring O-shaped ring 16 are arranged at the medium side of the shaft sleeve 1, a medium side static ring 12 and a medium side static ring O-shaped ring 17 are arranged at the medium side of an inner gland 3, a push ring 10 is arranged between the medium side static ring 12 and a flow guide sleeve 8, a push ring anti-rotation pin 26 for preventing the medium side static ring 12 from rotating is arranged on the push ring 10, an inner gland anti-rotation pin 27 for preventing the push ring 10 from rotating is arranged on the inner gland 3, a push ring spring 25 is arranged on the push ring 10, the flow guide sleeve 8 is arranged at the position of the push ring spring 25, an atmospheric side movable ring 14, an atmospheric side movable ring O-shaped ring 18 and an atmospheric side movable ring seat O-shaped ring 20 are arranged on the atmospheric side movable ring seat 7, the atmosphere side of the quiet ring 13 of atmosphere side is equipped with outer gland 2, the quiet ring O of atmosphere side shape circle 19 is equipped with between quiet ring 13 of atmosphere side and the outer gland 2, be equipped with outer gland spring 30 on the outer gland 2, still be equipped with on the outer gland 2 simultaneously and prevent that quiet ring 13 pivoted outer gland stop pin 29 of atmosphere side, stopper 5 passes through the screw 23 fastening on driving ring 4, it is integrated through jump ring 6 behind the gland O shape circle 21 in the installation between interior gland 3 and the outer gland 2, be equipped with gland pad 24 on the interior gland 3.

The utility model has the advantages that: the flow guide sleeve arranged in the utility model has multiple functions, firstly, the medium side mechanical seal spring force is effectively transmitted to the end face of the medium side movable ring and the medium side static ring which are mutually laminated to achieve good lamination, and simultaneously, the push ring is also ensured to be in an ideal working state; the second is to guarantee the second sealing liquid can circulate to the maximum extent, because the mechanical seal space is itself narrow and small, the pumping effect of the spiral pumping ring is best, the inner diameter size of the flow guide sleeve and the clearance between the flow guide sleeve and the flow guide sleeve can make the sealing liquid circulate in the seal cavity, thereby providing a good working environment for the second seal cavity, prolonging the service life of the second mechanical seal, winning the time of replacing spare parts on site when the main seal leaks, and reducing the accident rate; and thirdly, the flow guide sleeve saves the space inside the mechanical seal to the maximum extent, and because the medium side spring needs to provide enough spring force for the medium side end face to ensure the normal operation of the mechanical seal, most of the medium side spring is provided with the spring box for installing the spring so as to provide the spring force for the mechanical seal end face. The use of the flow guide sleeve does not need to process the spring box, thereby saving the processing of parts and reducing the cost of mechanical seal. In conclusion, the flow guide sleeve has multiple functions, the ultrashort space size of the flow guide sleeve has multiple functions, the problem of two-path sealing liquid circulation is solved under the condition that the medium side end face is well attached, a good working environment is provided for the mechanical sealing medium side and the atmosphere side end face, and the flow guide sleeve plays a vital role in using the medium side mechanical sealing and the atmosphere side mechanical sealing. The mechanical sealing space is narrow, the mechanical sealing device can meet the use requirements of more pumps with small installation spaces, the installation size meets the DIN24960 standard, and the mechanical sealing device can be used for inflammable, explosive, toxic and harmful media and the like. Compared with the packing seal, the double-end-face mechanical seal device has the advantages that the packing is in long-term contact with the shaft, the packing is abraded by the pump shaft in the operation process, the pump shaft is damaged due to mutual friction between the pump shaft and the packing, and the gap between the pump shaft and the packing is larger and larger along with the operation process of the pump due to the abrasion of the packing. Therefore, the structure can greatly prolong the service life of the mechanical seal and can better meet the requirements of customers such as chemical plants, petrochemical plants, oil refineries and the like on the safety of the mechanical seal for the pump which is inflammable, explosive, poisonous and harmful.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a schematic structural view of the middle flow guiding sleeve of the present invention.

In the figure: the device comprises a shaft sleeve 1, an outer gland 2, an inner gland 3, a transmission ring 4, a limiting block 5, a clamp spring 6, an atmosphere side rotating ring seat 7, a flow guide sleeve 8, a shaft retainer ring 9, a thrust ring 10, a medium side rotating ring 11, a medium side stationary ring 12, an atmosphere side stationary ring 13, an atmosphere side rotating ring 14, a shaft sleeve O-shaped ring 15, a medium side rotating ring O-shaped ring 16, a medium side stationary ring O-shaped ring 17, a medium side stationary ring O-shaped ring 18, an atmosphere side rotating ring O-shaped ring 19, an atmosphere stationary ring O-shaped ring 20, an atmosphere side rotating assembly O-shaped ring 21, an inner gland O-shaped ring 22, a set screw 23, a gland cushion 24, a thrust ring spring 25, a thrust ring pin 26, an inner gland pin 27, an atmosphere side rotating ring assembly rotating pin 28, an outer gland rotating pin 29 and an outer rotating cap spring 30.

Detailed Description

The mechanical sealing device will be described in detail with reference to the accompanying drawings.

A multifunctional guide sleeve mechanical sealing device is disclosed, as shown in figures 1 to 3, a shaft sleeve O-shaped ring 15 is arranged at the inner diameter of a shaft sleeve 1 to prevent a medium from leaking between a pump shaft and the shaft sleeve, a transmission ring 4 is arranged at the tail part of the atmosphere side of the shaft sleeve 1, the shaft sleeve 1 is connected with the transmission ring 4 through a set screw 22, the set screw 22 drives the transmission ring 4 to rotate through the rotation of the pump shaft so as to drive the medium side and atmosphere side rotating rings to rotate, a medium side rotating ring 11 and a medium side rotating ring O-shaped ring 16 are arranged at the medium side of the shaft sleeve 1, a medium side stationary ring 12 and a medium side stationary ring O-shaped ring 17 are arranged at the medium side of an inner gland 3, the existence of the O-shaped rings plays a role of preventing the medium from leaking, a push ring 10 is arranged between the medium side stationary ring 12 and a guide sleeve 8, the push ring 10 is provided with a push ring pin 26 preventing the medium side stationary ring 12 from rotating, preventing the relative rotation with the medium side rotating ring 11, and an inner gland, be equipped with the throw-out collar spring 25 on the throw-out collar 10, throw-out collar spring 25 department is equipped with water conservancy diversion cover 8, and water conservancy diversion cover 8 axial extrusion throw-out collar spring 25 provides lasting spring force for medium side stationary ring 12 to guarantee that medium side rotating ring 11 and the intact laminating of medium side stationary ring 12 reach sealed effect together, also make the 8 rigidity of water conservancy diversion cover through the throw-out collar spring force simultaneously, play the effect for the circulation of two sealing liquids. The atmosphere side movable ring seat 7 is provided with an atmosphere side movable ring 14, an atmosphere side movable ring O-shaped ring 18 and an atmosphere side movable ring seat O-shaped ring 20, the atmosphere side rotating ring seat anti-rotation pin 28 is arranged on the shaft sleeve 1 and is fixed by the shaft check ring 9, after the atmosphere side rotating ring seat 7 and the atmosphere side rotating ring 14 are fixed, the atmosphere side rotating ring seat and the atmosphere side rotating ring can only rotate along with the pump shaft without axial movement, an outer gland 2 is arranged on the atmosphere side of the atmosphere side static ring 13, an atmosphere side static ring O-shaped ring 19 is arranged between the atmosphere side static ring 13 and the outer gland 2, an outer gland spring 30 is arranged on the outer gland 2, meanwhile, an outer gland anti-rotation pin 29 for preventing the atmosphere side static ring 13 from rotating is arranged on the outer gland 2, after the atmosphere side static ring 13 is installed in place, utilize jump ring 6 with integrated between interior gland 3 and the outer gland 2, atmosphere side shrinkage adjustment is in place this moment, interior gland O shape circle 21 plays the effect of sealed liquid of sealing, and then stopper 5 passes through screw 23 fastening on driving ring 4. The compression amount of the medium side spring is adjusted in place, an inner gland O-shaped ring 21 is installed between the inner gland 3 and the outer gland 2 and then integrated through the clamp spring 6, the components are integrated together, and a gland gasket 24 is installed on the inner gland 3 and plays a role in sealing medium leakage when the whole device is installed on equipment. The medium side static ring 12, the medium side dynamic ring 11, the atmosphere side static ring 13 and the atmosphere side dynamic ring 14 are well attached together to form a liquid film through the spring force provided by the push ring spring 25, and the rest parts are sealed through O-shaped rings. In conclusion, the guide sleeve 8 provides an ideal working state for all parts, and plays a vital role in the ideal working state. When guaranteeing that medium side mechanical seal spring force effectively transmits to reach its good laminating on the terminal surface, the water conservancy diversion cover 8 can guarantee that two seal liquid can furthest's circulation get up, seal the liquid and enter into two seal chamber through sealing liquid entry LBI, come out from sealing liquid export LBO again, formed the circulation effect of one advance one play, improved mechanical seal's life. The mechanical seal space is narrow, the pumping effect of the spiral pumping ring is optimal, the guide sleeve saves the space inside the mechanical seal to the maximum extent, the spring box does not need to be processed, the processing of parts is saved, and the cost of the mechanical seal is reduced.

This device makes mechanical seal device's axial installation space more short and small, can be applicable to the installation space of most old structures, and the suitability is stronger, and application range is wider. The device ensures the sealing of the medium in the pump cavity, avoids the direct leakage of the medium in the pump into the atmosphere to cause environmental pollution and the like, and is safer and more reliable. The installation size of the device conforms to the DIN24960 standard.

Claims (1)

1. The utility model provides a multi-functional water conservancy diversion cover mechanical seal device which characterized by: the inner diameter of a shaft sleeve (1) is provided with a shaft sleeve O-shaped ring (15), the tail of the atmosphere side of the shaft sleeve (1) is provided with a transmission ring (4), the shaft sleeve (1) is connected with the transmission ring (4) through a set screw (22), the medium side of the shaft sleeve (1) is provided with a medium side movable ring (11) and a medium side movable ring O-shaped ring (16), the medium side of an inner gland (3) is provided with a medium side static ring (12) and a medium side static ring O-shaped ring (17), a push ring (10) is arranged between the medium side static ring (12) and a guide sleeve (8), the push ring (10) is provided with a push ring anti-rotation pin (26) for preventing the medium side static ring (12) from rotating, meanwhile, the inner gland (3) is provided with an inner gland pin (27) for preventing the push ring (10) from rotating, the push ring (10) is provided with a push ring spring (25), the guide sleeve (8) is arranged at the position of the push ring spring (25), the atmosphere side movable ring seat (7, Atmospheric side rotating ring O-shaped ring (18) and atmospheric side rotating ring seat O-shaped ring (20) and through atmospheric side rotating ring seat stop pin (28) install on axle sleeve (1) with axle retaining ring (9) with it fixed, the atmosphere side at atmospheric side quiet ring (13) is equipped with outer gland (2), be equipped with atmospheric side quiet ring O-shaped ring (19) between atmospheric side quiet ring (13) and outer gland (2), be equipped with outer gland spring (30) on outer gland (2), still be equipped with on outer gland (2) simultaneously and prevent that atmospheric side quiet ring (13) pivoted outer gland stop pin (29), stopper (5) pass through screw (23) fastening on driving ring (4), install between inner gland (3) and outer gland (2) after gland O-shaped ring (21) integrate through jump ring (6), install gland pad (24) on inner gland (3).

Images