CN212131305U - Hydraulic mechanical sealing structure - Google Patents

Abstract

The utility model discloses a hydraulic mechanical seal structure, include transmission shaft, nut, go up cutting ferrule, axle sleeve body and supporting seat, the surface cover of transmission shaft is equipped with the axle sleeve body, and the inside that the axle sleeve body is close to the transmission shaft is equipped with the axle sleeve rubber ring to the axle sleeve body surface cover of axle sleeve rubber ring one side is equipped with spring sleeve, the inside one side of being close to the axle sleeve rubber ring of spring sleeve is equipped with the sleeve rubber ring, and the spring sleeve bottom of axle sleeve body one side is equipped with the rotating ring, and one side that the rotating ring is close to the axle sleeve body is equipped with compression spring, compression spring's one end and rotating ring fixed connection, and compression spring's the other end and axle sleeve body fixed connection to the transmission shaft surface cover of rotating ring one side is equipped with the gland. The utility model discloses not only realized that seal structure is to the reliable stable sealed of hydraulic machine, reduced seal structure's frictional force, improved the stability when seal structure uses moreover.

Description

Hydraulic mechanical sealing structure

Technical Field

The utility model relates to a seal structure technical field specifically is a hydraulic mechanical seal structure.

Background

In hydraulic equipment, the stable connection of mechanical structure is very important, and the connection seal of mechanical transmission spare is a key technology, and both waist guarantee that the transmission shaft can rotate smoothly, keep the container at encapsulated situation simultaneously, if sealed effect is not good, life is short, needs often to change, seriously influences production, has also increased manufacturing cost, and current hydraulic mechanical seal structure still has some not enoughly to wait to improve when using.

The sealing structure on the market is various and can basically meet the use requirements of people, but certain problems still exist, and the specific problems include the following points:

(1) the existing sealing structure is generally inconvenient to reliably and stably seal hydraulic machinery when in use, so that the stability of the sealing structure when in use is seriously influenced;

(2) the existing sealing structure is not convenient for reliable limit support of hydraulic machinery during working when in use, thereby greatly influencing the sealing effect of the sealing structure during use;

(3) the existing sealing structure is not convenient for reliably installing and fixing the hydraulic machine when in use, thereby bringing great trouble to people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydromechanical seal structure to it is not convenient for to the reliable stable sealed of hydromechanical to provide seal structure in solving above-mentioned background art, to the reliable spacing support of hydromechanical during operation, is not convenient for to the reliable fixed problem of installation of hydromechanical.

In order to achieve the above object, the utility model provides a following technical scheme: a hydraulic mechanical sealing structure comprises a transmission shaft, a nut, an upper cutting sleeve, a shaft sleeve body and a supporting seat, wherein the surface of the transmission shaft is sleeved with the shaft sleeve body, a shaft sleeve rubber ring is arranged in the shaft sleeve body close to the transmission shaft, a spring sleeve is sleeved on the surface of the shaft sleeve body on one side of the shaft sleeve rubber ring, a sleeve rubber ring is arranged on one side of the spring sleeve close to the shaft sleeve rubber ring, a movable ring is arranged at the bottom end of the spring sleeve on one side of the shaft sleeve body, a compression spring is arranged on one side of the movable ring close to the shaft sleeve body, one end of the compression spring is fixedly connected with the movable ring, the other end of the compression spring is fixedly connected with the shaft sleeve body, a gland is sleeved on the surface of the transmission shaft on one side of the gland, a positioning ring is sleeved on the surface of the transmission, and one end of the positioning ring, which is close to the gland, is provided with a limiting mechanism.

Preferably, the bottom end of the gland on one side of the rotating ring is provided with a static ring body, and the top end of the static ring body below the gland is provided with a static ring rubber ring, so that the static ring rubber ring is stably connected.

Preferably, one side of the surface of the transmission shaft, which is close to the shaft sleeve body, is provided with an upper clamping sleeve, one side of the upper clamping sleeve is fixedly connected with the shaft sleeve body, and the bottom end of the upper clamping sleeve on one side of the shaft sleeve body is provided with a lower clamping sleeve, so that the sealing structure is reliably mounted and fixed on the hydraulic machine.

Preferably, the both ends of cutting ferrule all are equipped with the supporting seat down, and the outer wall and the lower cutting ferrule fixed connection of supporting seat to the inside of supporting seat is equipped with the bolt, be equipped with the nut on the last cutting ferrule outer wall of bolt top, and the outer wall and the last cutting ferrule fixed connection of nut have improved the stability when hydraulic machine uses.

Preferably, stop gear's inside has set gradually down base, lower annular groove, ball, goes up annular groove and last base, be equipped with two sets of bases on the outer wall of position circle one side, and go up the outer wall and the position circle fixed connection of base to the bottom of going up the base is equipped with annular groove, goes up annular groove's top and last base fixed connection, has realized that seal structure is to the reliable spacing support of hydraulic machine during operation.

Preferably, the outer wall of the gland below the upper base is provided with two groups of lower bases, the outer wall of each lower base is fixedly connected with the gland, the top end of each lower base below the upper annular groove is fixedly provided with a lower annular groove, and the top ends of the lower annular grooves are provided with balls at equal intervals, so that the friction force of the sealing structure is reduced.

Compared with the prior art, the beneficial effects of the utility model are that: the sealing structure not only realizes reliable and stable sealing of the sealing structure on hydraulic machinery, reduces the friction force of the sealing structure, but also improves the stability of the sealing structure when in use;

(1) the shaft sleeve body is sleeved on the surface of a transmission shaft by an operator, the sealing part is kept clean when the shaft sleeve is installed, a sealing part is cleaned, the sealing end face is intact, impurities and dust are prevented from being brought into the sealing part, a layer of clean mechanical oil is coated on the surface which is in contact with the seal when the shaft sleeve is installed so as to be smoothly installed, a shaft sleeve rubber ring is inserted into the shaft sleeve body, the shaft sleeve body and the transmission shaft are sealed by the shaft sleeve rubber ring, the shaft sleeve body and a spring sleeve are sealed by the sleeve rubber ring, a static ring body and a gland are sealed by the static ring rubber ring, a compression spring has forward thrust to a dynamic ring under the support of the shaft sleeve body when the sealing structure works, the dynamic ring and the static ring body are mutually matched to realize the sealing of the transmission shaft and the gland, the working principle of the mechanical sealing is that the dynamic ring and the static ring body are mutually attached, and the flat sealing, the sealing structure rotates relatively, and the pressure of an elastic element compression spring and a sealing medium is relied on, a proper pressing force is generated on the contact ends of a movable ring rotating along with a transmission shaft and a static ring body not rotating along with the transmission shaft, so that the two contact end surfaces are tightly attached, and an extremely thin liquid film is maintained between the end surfaces, thereby achieving the purpose of sealing, realizing the reliable and stable sealing of the sealing structure on hydraulic machinery and improving the stability of the sealing structure when in use;

(2) the lower base, the lower annular groove, the balls, the upper annular groove and the upper base are arranged, the screws are driven to rotate by personnel, a plurality of groups of positioning rings are fixed on the surface of the transmission shaft, the stress is uniform when the driving screws are used, the vertical requirement of the end surface of the stationary ring and the axial lead is ensured, when the transmission shaft rotates relative to the gland, the plurality of groups of balls roll under the support of the upper base and the lower base and under the support of the upper annular groove and the lower annular groove, the reliable limiting support of the sealing structure on the hydraulic machinery during working is realized, and the friction force of the sealing structure is reduced;

(3) the upper clamping sleeve and the lower clamping sleeve are sleeved together by a worker, the upper clamping sleeve and the lower clamping sleeve are fixed under the matching of the nut and the bolt by rotating the bolt under the support of the supporting seat, so that the shaft sleeve body and the transmission shaft are fixed, the reliable installation and fixation of the sealing structure on hydraulic machinery are realized, and the stability of the hydraulic machinery in use is improved.

Drawings

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

FIG. 2 is a schematic view of the cross-sectional enlarged structure of the limiting mechanism of the present invention;

FIG. 3 is a schematic side view of the limiting mechanism of the present invention;

fig. 4 is a schematic top view of the cross-sectional structure of the compression spring AA of the present invention.

In the figure: 1. a drive shaft; 2. a nut; 3. a ferrule is arranged; 4. a shaft sleeve body; 5. a shaft sleeve rubber ring; 6. a sleeve rubber ring; 7. a spring sleeve; 8. a compression spring; 9. a moving ring; 10. a stationary ring body; 11. a stationary ring rubber ring; 12. a gland; 13. a limiting mechanism; 1301. a lower base; 1302. a lower annular groove; 1303. a ball bearing; 1304. an upper annular groove; 1305. an upper base; 14. a drive screw; 15. positioning rings; 16. a bolt; 17. a lower ferrule; 18. and (4) supporting the base.

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 an embodiment: a hydraulic mechanical sealing structure comprises a transmission shaft 1, a nut 2, an upper cutting sleeve 3, a shaft sleeve body 4 and a supporting seat 18, wherein the surface of the transmission shaft 1 is sleeved with the shaft sleeve body 4, a shaft sleeve rubber ring 5 is arranged inside the shaft sleeve body 4 close to the transmission shaft 1, a spring sleeve 7 is sleeved on the surface of the shaft sleeve body 4 at one side of the shaft sleeve rubber ring 5, a sleeve rubber ring 6 is arranged at one side of the inner part of the spring sleeve 7 close to the shaft sleeve rubber ring 5, a movable ring 9 is arranged at the bottom end of the spring sleeve 7 at one side of the shaft sleeve body 4, and one side of the movable ring 9 close to the shaft sleeve body 4 is provided with a compression spring 8, one end of the compression spring 8 is fixedly connected with the movable ring 9, the other end of the compression spring 8 is fixedly connected with the shaft sleeve body 4, a gland 12 is sleeved on the surface of the transmission shaft 1 on one side of the movable ring 9, a static ring body 10 is arranged at the bottom end of the gland 12 on one side of the movable ring 9, and a static ring rubber ring 11 is arranged at the top end of the static ring body 10 below the gland 12;

when the sealing structure works, the compression spring 8 has a forward thrust to the movable ring 9 under the support of the shaft sleeve body 4, the movable ring 9 and the static ring body 10 are matched with each other to realize the sealing of the transmission shaft 1 and the gland 12, the working principle of the mechanical sealing is that the movable ring 9 and the static ring body 10 are mutually attached, the flat sealing surface vertical to the rotation axis, and the seal structure that rotates relatively, it relies on the pressure of elastic element compression spring 8 and sealing medium, the contact end of the rotating ring 9 rotating with drive shaft 1 and stationary ring body 10 not rotating with drive shaft 1 produces the appropriate packing force, make these two contact end surfaces closely laminate, maintain a layer of extremely thin liquid film between the end surfaces, thus achieve the goal of sealing, have realized the reliable and stable seal of the seal structure to the hydraulic machinery, has improved the stability when the seal structure uses;

a positioning ring 15 is sleeved on the surface of the transmission shaft 1 on one side of the gland 12, a driving screw 14 is arranged in the positioning ring 15, the positioning ring 15 is fixedly connected with the transmission shaft 1 through the driving screw 14, and a limiting mechanism 13 is arranged at one end, close to the gland 12, of the positioning ring 15;

a lower base 1301, a lower annular groove 1302, balls 1303, an upper annular groove 1304 and an upper base 1305 are sequentially arranged in the limiting mechanism 13, two groups of upper bases 1305 are arranged on the outer wall of one side of the positioning ring 15, the outer wall of the upper base 1305 is fixedly connected with the positioning ring 15, the lower end of the upper base 1305 is provided with the upper annular groove 1304, the top end of the upper annular groove 1304 is fixedly connected with the upper base 1305, two groups of lower bases 1301 are arranged on the outer wall of the gland 12 below the upper base 1305, the outer wall of the lower base 1301 is fixedly connected with the gland 12, the top end of the lower base 1301 below the upper annular groove 1304 is fixedly provided with the lower annular groove 1302, and the top end of the lower annular groove 1302 is provided with the balls 1303 with equal intervals;

when the sealing structure is used, a person rotates the driving screw 14 to fix the multiple groups of positioning rings 15 on the surface of the transmission shaft 1, the driving screw 14 has to be stressed uniformly when in use, so that the vertical requirement of the end surface of the stationary ring and the axis line is ensured, when the transmission shaft 1 rotates relative to the gland 12, under the support of the upper base 1305 and the lower base 1301, the multiple groups of balls 1303 roll under the support of the upper annular groove 1304 and the lower annular groove 1302, so that the reliable limiting support of the sealing structure on the hydraulic machine during working is realized, and the friction force of the sealing structure is reduced;

an upper cutting sleeve 3 is arranged on one side, close to a shaft sleeve body 4, of the surface of a transmission shaft 1, one side of the upper cutting sleeve 3 is fixedly connected with the shaft sleeve body 4, a lower cutting sleeve 17 is arranged at the bottom end of the upper cutting sleeve 3 on one side of the shaft sleeve body 4, supporting seats 18 are arranged at two ends of the lower cutting sleeve 17, the outer wall of each supporting seat 18 is fixedly connected with the corresponding lower cutting sleeve 17, a bolt 16 is arranged inside each supporting seat 18, a nut 2 is arranged on the outer wall of the upper cutting sleeve 3 above the bolt 16, and the outer wall of the nut 2 is fixedly connected;

during the use, the upper cutting ferrule 3 and the lower cutting ferrule 17 are sleeved together by a worker, under the support of the support seat 18, the bolt 16 is rotated, the upper cutting ferrule 3 and the lower cutting ferrule 17 are fixed under the cooperation of the nut 2 and the bolt 16, so that the shaft sleeve body 4 and the transmission shaft 1 are fixed, the reliable installation and fixation of the sealing structure on hydraulic machinery are realized, and the stability of the hydraulic machinery during use is improved.

The working principle is as follows: when the sealing structure is used, firstly, the shaft sleeve body 4 is sleeved on the surface of the transmission shaft 1 by workers, the sealing part is kept clean when being installed, the sealing end face is intact, impurities and dust are prevented from being brought into the sealing part, a layer of clean mechanical oil is coated on the surface which is in contact with the seal when being installed, so that smooth installation can be realized, the shaft sleeve rubber ring 5 is inserted into the shaft sleeve body 4, the shaft sleeve body 4 and the transmission shaft 1 are sealed by the shaft sleeve rubber ring 5, the shaft sleeve body 4 and the spring sleeve 7 are sealed by the sleeve rubber ring 6, the static ring body 10 and the gland 12 are sealed by the static ring rubber ring 11, when the sealing structure works, the compression spring 8 has forward thrust to the dynamic ring 9 under the support of the shaft sleeve body 4, the dynamic ring 9 and the static ring body 10 are mutually matched to realize the sealing of the transmission shaft 1 and the gland 12, the working principle of the mechanical sealing is that the dynamic ring 9 and the static ring body 10 are mutually attached, a flat sealing surface vertical to the rotation axis and a sealing structure rotating relatively, which is characterized in that a proper pressing force is generated on the contact ends of a movable ring 9 rotating along with a transmission shaft 1 and a static ring body 10 not rotating along with the transmission shaft 1 by the pressure of an elastic element compression spring 8 and a sealing medium, so that the two contact end surfaces are tightly attached, and a layer of extremely thin liquid film is maintained between the end surfaces, thereby achieving the purpose of sealing, realizing the reliable and stable sealing of the sealing structure to hydraulic machinery, improving the stability of the sealing structure in use, then a plurality of groups of positioning rings 15 are fixed on the surface of the transmission shaft 1 by rotating a driving screw 14 by personnel, the stress of the driving screw 14 is uniform when in use, ensuring the vertical requirement of the end surface of the static ring and the axial lead, when the transmission shaft 1 rotates relative to a gland 12, under the support of an upper base 1305 and a base 1301, a plurality of groups of balls 1303 roll under the assistance of an upper, realized that seal structure is to the reliable spacing support of hydraulic machine during operation, seal structure's frictional force has been reduced, the rethread staff is in the same place last cutting ferrule 3 and cutting ferrule 17 suit down, under the support of supporting seat 18, rotatory bolt 16, fix last cutting ferrule 3 and lower cutting ferrule 17 under nut 2 and bolt 16's cooperation, thereby fix axle sleeve body 4 and transmission shaft 1, it is fixed to realize that seal structure is to the reliable installation of hydraulic machine, stability when improving hydraulic machine and using, accomplish seal structure's use work.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a hydromechanical seal structure, includes transmission shaft (1), nut (2), goes up cutting ferrule (3), axle sleeve body (4) and supporting seat (18), its characterized in that: the surface of the transmission shaft (1) is sleeved with a shaft sleeve body (4), a shaft sleeve rubber ring (5) is arranged in the shaft sleeve body (4) close to the transmission shaft (1), a spring sleeve (7) is sleeved on the surface of the shaft sleeve body (4) on one side of the shaft sleeve rubber ring (5), a sleeve rubber ring (6) is arranged on one side of the spring sleeve (7) close to the shaft sleeve rubber ring (5), a movable ring (9) is arranged at the bottom end of the spring sleeve (7) on one side of the shaft sleeve body (4), a compression spring (8) is arranged on one side of the movable ring (9) close to the shaft sleeve body (4), one end of the compression spring (8) is fixedly connected with the movable ring (9), the other end of the compression spring (8) is fixedly connected with the shaft sleeve body (4), a gland (12) is sleeved on the surface of the transmission shaft (1) on one side of the movable ring (9), and a positioning ring (15) is sleeved, and the inside of position circle (15) is equipped with drive screw (14) to position circle (15) are through drive screw (14) and transmission shaft (1) fixed connection, the one end that position circle (15) are close to gland (12) is equipped with stop gear (13).

2. A hydromechanical seal according to claim 1, wherein: the bottom end of the gland (12) on one side of the movable ring (9) is provided with a static ring body (10), and the top end of the static ring body (10) below the gland (12) is provided with a static ring rubber ring (11).

3. A hydromechanical seal according to claim 1, wherein: one side that transmission shaft (1) surface is close to axle sleeve body (4) is equipped with cutting ferrule (3), and goes up one side and axle sleeve body (4) fixed connection of cutting ferrule (3) to cutting ferrule (17) are equipped with down in last cutting ferrule (3) bottom of axle sleeve body (4) one side.

4. A hydromechanical seal according to claim 3, wherein: both ends of lower cutting ferrule (17) all are equipped with supporting seat (18), and the outer wall and lower cutting ferrule (17) fixed connection of supporting seat (18) to the inside of supporting seat (18) is equipped with bolt (16), be equipped with nut (2) on last cutting ferrule (3) outer wall of bolt (16) top, and the outer wall and last cutting ferrule (3) fixed connection of nut (2).

5. A hydromechanical seal according to claim 1, wherein: the inside of stop gear (13) has set gradually down base (1301), lower annular groove (1302), ball (1303), go up annular groove (1304) and go up base (1305), be equipped with two sets of last base (1305) on the outer wall of position circle (15) one side, and the outer wall and the position circle (15) fixed connection of going up base (1305), and the bottom of going up base (1305) is equipped with annular groove (1304), the top and last base (1305) fixed connection of going up annular groove (1304).

6. A hydromechanical seal according to claim 5, wherein: two groups of lower bases (1301) are arranged on the outer wall of the gland (12) below the upper base (1305), the outer wall of each lower base (1301) is fixedly connected with the corresponding gland (12), a lower annular groove (1302) is fixed at the top end of each lower base (1301) below the upper annular groove (1304), and balls (1303) at equal intervals are arranged at the top end of each lower annular groove (1302).

Images