CN218670642U - External cartridge-type double-end-face mechanical seal with springs - Google Patents

Abstract

The utility model discloses an external cartridge-type double mechanical seal of spring, include: the shaft body, the shaft sleeve nested and attached outside the shaft body and the inner static ring and the push ring nested and connected outside the middle part of the shaft sleeve are nested and attached; further comprising: the outer side of the right end of the shaft body is in transmission connection with an impeller through a step in the shaft sleeve, and an inner rotating ring is nested and attached to the outer side of the right end of the shaft sleeve; the outer sides of the middle parts of the inner static ring and the push ring are nested and attached to form a sealing seat, and the outer side of the right end of the sealing seat is connected with a sealing gasket in a buckling mode. This external cartridge type double mechanical seal of spring prevents changeing stable performance, is convenient for let in the flow of sparge water to control to be convenient for filter the impurity in the wash water, avoid haring this mechanical seal, and be convenient for make the spring body arrange this mechanical seal atmosphere side in outward, and not contact with medium and sparge water, make the quality of water of sparge water and sealed leakage all not influence the effect of spring body, guarantee effectual elasticity that provides all the time.

Description

External cartridge-type double-end-face mechanical seal with springs

Technical Field

The utility model relates to a mechanical seal technical field specifically is an external collection dress formula double mechanical seal of spring.

Background

The mechanical seal is mainly used for preventing fluid leakage at the joint of the shaft part, belongs to one of mechanical basic elements with precision and complex structures, and is a key part of mechanical equipment such as various pumps, reaction synthesis kettles, turbine compressors, submersible motors and the like.

However, in the use process of the existing mechanical seal, the seal is good, but the rotation prevention performance is limited, the mechanical seal is easy to block and damage due to impurities in flushing water, the heat dissipation of the mechanical seal is influenced, and the spring body (15) is easy to contact with media and the flushing water to influence the elasticity, so that the assembled double-end-face mechanical seal with the externally arranged springs is provided, and the problems provided in the above are solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an external cartridge-type double mechanical seal of spring to propose current mechanical seal in solving above-mentioned background art, in the use, it is sealed good, nevertheless prevent changeing the performance limited, and easily cause the jam and harm because of the impurity in the sparge water, influence mechanical seal's heat dissipation, and the spring body easily influences the problem of elasticity because of contacting with medium and sparge water.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an external cartridge-type double mechanical seal of spring, includes: the shaft body, the shaft sleeve nested and attached outside the shaft body and the inner static ring and the push ring nested and connected outside the middle part of the shaft sleeve are nested and attached;

further comprising:

the outer side of the right end of the shaft body is in transmission connection with an impeller through a step in the shaft sleeve, and an inner rotating ring is nested and attached to the outer side of the right end of the shaft sleeve;

the outer sides of the middle parts of the inner static ring and the push ring are nested and attached with a sealing seat, and the outer side of the right end of the sealing seat is connected with a sealing gasket in a buckling manner;

an outer static ring is nested and attached to the outer side of the left end of the push ring, and a spring body which is attached and connected with the push ring is nested and arranged on the inner side of the upper end of the outer static ring.

Preferably, a liquid inlet hole and a liquid outlet hole are respectively formed in the inner part of the upper end and the inner part of the rear end of the sealing seat, a filter cylinder is nested in the inner side of the upper end of the liquid inlet hole, and a flow meter in threaded connection with the sealing seat is arranged above the filter cylinder.

Preferably, the sealing seat and the inner part of the left lower end of the push ring are connected with a limiting rod in a nested manner, and the left end of the limiting rod is positioned on the inner side of the lower end of the outer stationary ring.

Preferably, the right side of the outer stationary ring is provided with an outer movable ring which is nested outside the left end of the shaft sleeve, and the inner side of the left end of the outer movable ring is nested and attached with an elastic retainer ring which is connected with the shaft sleeve in a buckling manner.

Preferably, the inner sides of the inner rotating ring and the outer rotating ring are respectively connected with a second intermediate ring tightly attached to the first intermediate ring in a buckling mode, and the first intermediate ring monomer is respectively connected to the inner sides of the inner rotating ring and the outer rotating ring in a buckling mode.

Preferably, the inner side of the right end of the shaft sleeve is provided with a sealing ring which is tightly attached to the shaft body and the impeller in a nested manner, the outer sides of the left end and the right end of the shaft sleeve are respectively provided with a sealing ring which is tightly attached to the outer movable ring and the inner movable ring in a nested manner, the inner sides of the left end and the right end of the sealing seat are respectively provided with a sealing ring which is tightly attached to the push ring and the inner stationary ring in a nested manner, and the inner side of the left end of the push ring is provided with a sealing ring which is tightly attached to the outer stationary ring in a nested manner.

Compared with the prior art, the beneficial effects of the utility model are that: the external assembled double-end-face mechanical seal with the spring has stable anti-rotation performance, is convenient for controlling the flow of introduced flushing water, filtering impurities in the flushing water, avoiding damaging the mechanical seal, and facilitating the external arrangement of the spring body on the atmosphere side of the mechanical seal without contacting with a medium and the flushing water, so that the water quality of the flushing water and the leakage of the seal do not influence the effect of the spring body, and the effective elastic force supply is always ensured;

1. the mechanical seal is provided with a shaft sleeve, an inner rotating ring, an inner static ring and a push ring, wherein the inner rotating ring and the outer rotating ring are both in transmission with the shaft sleeve through special-shaped structures, and the inner static ring and the push ring adopt a shifting fork structure to prevent rotation, so that the mechanical seal is convenient to stabilize in rotation prevention performance;

2. the sealing device is provided with a sealing seat, a liquid inlet hole, a filter cylinder and a flowmeter, wherein the filter cylinder is nested inside the upper end of the sealing seat, the liquid inlet hole is formed in the upper end of the sealing seat, the filter cylinder is provided with the flowmeter in threaded connection with the sealing seat, and the liquid outlet hole is formed in the rear end of the sealing seat, so that the flow of flushing water is controlled conveniently, impurities in the flushing water are filtered conveniently, and the mechanical seal is prevented from being damaged;

3. be provided with the throw-out collar, outer quiet ring, spring body and sealing washer, because the outer end that the nestification set up the spring body in the outer quiet ring is connected with the throw-out collar laminating, the nestification is provided with the sealing washer with the inseparable laminating of outer quiet ring in the left end outside of throw-out collar, and the inseparable laminating in the right-hand member outside of throw-out collar has the sealing washer of nestification in the seal receptacle, consequently be convenient for make this mechanical seal atmosphere side of arranging in outward of spring body, and not contact with medium and sparge water, make the quality of water of sparge water and sealed effect that does not all influence the spring body, guarantee effectual elasticity that provides all the time.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is a schematic view of a side view cross-sectional structure of the connection between the shaft sleeve and the inner rotating ring of the present invention;

FIG. 3 is a schematic view of the front view structure of the present invention;

fig. 4 is a schematic view of the top-view cross-sectional structure of the push ring and the inner stationary ring of the present invention.

In the figure: 1. a shaft body; 2. an impeller; 3. a shaft sleeve; 4. an inner rotating ring; 5. an inner stationary ring; 6. a sealing seat; 7. a gasket; 8. a liquid inlet hole; 9. a filter cartridge; 10. a flow meter; 11. a liquid outlet hole; 12. a limiting rod; 13. a push ring; 14. an outer stationary ring; 15. a spring body; 16. an outer rotating ring; 17. a circlip; 18. a first intermediate ring; 19. a second intermediate ring; 20. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a packaged double-end-face mechanical seal with an externally arranged spring comprises a shaft body 1, an impeller 2, a shaft sleeve 3, an inner movable ring 4, an inner fixed ring 5, a seal seat 6, a sealing gasket 7, a liquid inlet hole 8, a filter cylinder 9, a flowmeter 10, a liquid outlet hole 11, a limiting rod 12, a push ring 13, an outer fixed ring 14, a spring body 15, an outer movable ring 16, an elastic check ring 17, a first intermediate ring 18, a second intermediate ring 19 and a seal ring 20, wherein before the packaged double-end-face mechanical seal with the externally arranged spring is used, as shown in figures 1 and 2, the seal ring 20 can be nested on the inner side of the shaft sleeve 3, then the shaft sleeve 3 can be nested outside the shaft body 1 externally connected with the impeller 2, so that the seal ring 20 monomer in the shaft sleeve 3 is respectively attached to the shaft body 1 and the impeller 2, then the inner movable ring 4 with the second intermediate ring 19 arranged on the inner side can be nested on the right end of the shaft sleeve 3, the inner movable ring 4 with the first intermediate ring 18 arranged on the inner side can be buckled on the right end of the shaft sleeve 3, the inner movable ring 5 can be nested on the right end of the shaft sleeve 3, and the inner side of the inner fixed ring 5 can be nested on the inner side of the inner push ring 6, and the left side of the inner fixed ring 6, the left fixed ring 6 can be closely attached to the inner side of the inner push ring 13, and the left fixed ring 6, the left fixed ring 13, and the inner side of the inner fixed ring 13, and left fixed ring 6 can be closely attached to the inner side of the inner push ring 13, and left fixed ring 6, the left fixed ring 13, and left fixed ring 6 can be closely attached to the inner fixed ring 13;

then, an outer static ring 14 of a spring body 15 with an inner side at the upper end can be nested at the outer side of the left end of a push ring 13, so that the left end of a limiting rod 12 is positioned at the inner side of the lower end of the outer static ring 14, the spring body 15 is in fit connection with the push ring 13, so that the outer static ring 14 is in close fit connection with a sealing ring 20 in the push ring 13, an inner side nested sealing ring 20 at the inner end and an outer movable ring 16 of a second middle ring 19 clamped at the inner side of the right end can be nested at the outer side of the left end of a shaft sleeve 3, so that the second middle ring 19 clamped in the outer movable ring 16 is in close fit connection with a first middle ring 18 clamped in the outer static ring 14, and finally an elastic check ring 17 can be clamped at the outer side of the left end of the shaft sleeve 3, so that the outer movable ring 16 is in nested fit connection with the outer movable ring 16, the axial position of the outer movable ring 16 is limited, a screw can penetrate through the inner side of the lower end of a sealing seat 6, so that the sealing seat 6 is fixed at the outer side of a pump body, thereby facilitating the mechanical fit and the mechanical assembly of the pump body;

as shown in fig. 1, 2 and 4, in the process of using the mechanical seal, the inner rotating ring 4 and the outer rotating ring 16 are both in transmission with the shaft sleeve 3 by adopting a special-shaped structure, the inner stationary ring 5 and the push ring 13 are prevented from rotating by adopting a shifting fork structure, so that the rotation prevention performance of the mechanical seal is stable, the liquid inlet hole 8 and the liquid outlet hole 11 are respectively formed in the upper end inner part and the rear end inner part of the seal seat 6, so that flushing water can be conveniently flowed to the inner sides of the shaft sleeve 3 and the outer embedded sleeve rotating ring 4, the inner stationary ring 5, the push ring 13, the outer stationary ring 14 and the outer rotating ring 16 thereof and then flowed out from the liquid outlet hole 11, the purpose of radiating the mechanical seal is achieved, the filter cartridge 9 is nested in the inner side of the liquid inlet hole 8, and the flow meter 10 in threaded connection with the seal seat 6 is arranged above the filter cartridge 9, so that the flow of the flushing water can be conveniently controlled by the flow meter 10, and impurities in the flushing water can be conveniently filtered by the filter cartridge 9, thereby avoiding the blockage and damaging the mechanical seal;

as shown in fig. 1 and fig. 3, and the spring body 15 is attached to the inner sides of the left upper ends of the outer stationary ring 14 and the push ring 13, so that the spring body 15 is conveniently arranged on the atmosphere side of the mechanical seal, a sealing ring 20 is closely attached to the inner sides of the inner ends of the push ring 13 and the outer stationary ring 14, the push ring 13 and the inner side of the right end outer side of the push ring are provided with the sealing ring 20, and the shaft body 1 and the shaft sleeve 3, the impeller 2 and the shaft sleeve 3 are closely attached to the sealing ring 20, the shaft sleeve 3 and the inner movable ring 4, the shaft sleeve 3 and the outer movable ring 16 are closely attached to the sealing ring 20, the inner stationary ring 5 and the sealing seat 6, and the inner sides of the push ring 13 and the sealing seat 6 are closely attached to the sealing ring 20, so that the mechanical seal is ensured not to be in contact with media and washing water under the good sealing performance of the mechanical seal, and the water quality and the leakage of the seal do not affect the effect of the spring body 15, thereby the spring body 15 is ensured to always provide effective elasticity.

The content that does not go into the detailed description in this specification belongs to the prior art that the professional technical staff of this field knows, the standard part that the utility model used all can purchase from the market, dysmorphism piece can be customized according to the record of description and attached drawing, the concrete connected mode of each part all adopts conventional means such as mature bolt, rivet, welding among the prior art, machinery, part and equipment all adopt among the prior art, conventional model, and the circuit connection adopts the conventional connected mode among the prior art, and the details are not repeated here, the content that does not go into the detailed description in this specification belongs to the prior art that the professional technical staff of this field knows.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (6)

1. The utility model provides an external cartridge-type double mechanical seal of spring, includes: the shaft body (1), the shaft sleeve (3) nested and jointed at the outer side of the shaft body (1) and the inner static ring (5) and the push ring (13) nested and connected at the outer side of the middle part of the shaft sleeve (3);

it is characterized by also comprising:

the outer side of the right end of the shaft body (1) is in transmission connection with an impeller (2) through an inner step of a shaft sleeve (3), and an inner moving ring (4) is nested and attached to the outer side of the right end of the shaft sleeve (3);

the sealing seat (6) is arranged on the outer sides of the middle parts of the inner static ring (5) and the push ring (13) in a nested and attached mode, and the sealing gasket (7) is connected to the outer side of the right end of the sealing seat (6) in a buckled mode;

an outer static ring (14) is nested and attached to the outer side of the left end of the push ring (13), and a spring body (15) which is attached and connected with the push ring (13) is nested and arranged on the inner side of the upper end of the outer static ring (14).

2. The external cartridge-type double-end-face mechanical seal of the spring according to claim 1, characterized in that: the liquid inlet hole (8) and the liquid outlet hole (11) are respectively formed in the upper end inner part and the rear end inner part of the sealing seat (6), the filter cylinder (9) is arranged on the upper end inner side of the liquid inlet hole (8) in a nested mode, and the flow meter (10) in threaded connection with the sealing seat (6) is arranged above the filter cylinder (9).

3. The external cartridge-type double-end-face mechanical seal of the spring according to claim 1, characterized in that: the left ends of the sealing seat (6) and the push ring (13) are connected with a limiting rod (12) in an embedded mode, and the left end of the limiting rod (12) is located on the inner side of the lower end of the outer static ring (14).

4. The external cartridge-type double-end-face mechanical seal of the spring according to claim 1, characterized in that: an outer moving ring (16) nested outside the left end of the shaft sleeve (3) is arranged on the right side of the outer stationary ring (14), and an elastic retainer ring (17) connected with the shaft sleeve (3) in a buckling mode is nested and attached on the inner side of the left end of the outer moving ring (16).

5. The external cartridge-type double-end-face mechanical seal of the spring according to claim 1, characterized in that: the inner sides of the inner moving ring (4) and the outer moving ring (14) are respectively connected with a second middle ring (19) which is tightly attached to the first middle ring (18) in a buckling mode, and the single body of the first middle ring (18) is respectively connected with the inner sides of the inner moving ring (5) and the outer moving ring (16) in a buckling mode.

6. The external cartridge-type double-end-face mechanical seal of the spring according to claim 1, characterized in that: the inner side of the right end of the shaft sleeve (3) is provided with a sealing ring (20) which is tightly attached to the shaft body (1) and the impeller (2) in a nested mode, the outer sides of the left end and the right end of the shaft sleeve (3) are respectively provided with a sealing ring (20) which is tightly attached to an outer movable ring (16) and an inner movable ring (4) in a nested mode, the inner sides of the left end and the right end of the sealing seat (6) are respectively provided with a sealing ring (20) which is tightly attached to a push ring (13) and an inner static ring (5) in a nested mode, and the inner side of the left end of the push ring (13) is provided with a sealing ring (20) which is tightly attached to an outer static ring (14) in a nested mode.

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