CN213145353U

CN213145353U - Mechanical seal for pump suitable for landfill leachate medium

Info

Publication number: CN213145353U
Application number: CN202021690675.0U
Authority: CN
Inventors: 张武雷
Original assignee: Ningbo Dyson Mechanical Seal Co Ltd
Current assignee: Ningbo Dyson Mechanical Seal Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-05-07
Anticipated expiration: 2030-08-13

Abstract

The application relates to a mechanical seal for pump that is suitable for landfill leachate medium belongs to mechanical seal technical field, has solved the technical problem that the spring that current machine sealed is worn and torn easily under landfill leachate medium soaks. The movable ring assembly comprises a transmission seat, a wave spring, a push pad, a movable ring seat and a movable ring which are coaxially arranged, wherein the transmission seat is provided with a mounting groove, the wave spring, the push pad and the movable ring seat are sequentially mounted in the mounting groove, the wave spring is clamped between the push pad and the bottom of the mounting groove, the side wall of the push pad, facing the wall of the mounting groove, is provided with an annular sealing groove, an annular sealing ring is embedded in the annular sealing groove, the side wall of the movable ring seat, away from the transmission seat, is provided with an installation embedding groove, and the movable ring is embedded in the installation embedding groove; the static ring component comprises a leather cup and a static ring, the static ring is embedded in the leather cup, and the dynamic ring is contacted with the static ring under the elastic action of the wave spring to form a sealing pair. This application has the advantage that the spring is difficult to wearing and tearing.

Description

Mechanical seal for pump suitable for landfill leachate medium

Technical Field

The application relates to the technical field of mechanical seal, in particular to a mechanical seal for a pump, which is suitable for a landfill leachate medium.

Background

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.

The existing mechanical seal for the pump mainly comprises a moving ring arranged on the pump shaft, a static ring arranged in a machine seal seat and a spring which is abutted against the moving ring to provide elasticity for the moving ring, wherein the spring is generally soaked by conveyed liquid.

In view of the above-mentioned related art, the inventors believe that there is a drawback in that the spring is easily worn out by the landfill leachate medium when it is used in a pump for landfill leachate medium due to the large amount of particulate impurities contained in the medium.

SUMMERY OF THE UTILITY MODEL

In order to solve the defect that the spring of machine seal easily wears out under landfill leachate medium soaks, this application provides a pump mechanical seal who is suitable for landfill leachate medium.

The application provides a mechanical seal for pump suitable for landfill leachate medium adopts following technical scheme:

a mechanical seal for a pump suitable for a landfill leachate medium comprises a movable ring component and a stationary ring component, wherein the movable ring component rotates along with a rotating shaft, the stationary ring component is fixed with the pump body, the movable ring component comprises a transmission seat, a wave spring, a push pad, a movable ring seat and a movable ring which are coaxially arranged, a mounting groove is formed in the transmission seat, the wave spring, the push pad and the movable ring seat are sequentially mounted in the mounting groove, the wave spring is clamped between the push pad and the bottom of the mounting groove, an annular sealing groove is formed in the side wall, facing the wall of the mounting groove, of the push pad, an annular sealing ring is embedded in the annular sealing groove, an installation embedding groove is formed in the side wall, away from the transmission seat, of the movable ring seat, and the movable ring is embedded in the;

the static ring component comprises a leather cup and a static ring, the static ring is embedded in the leather cup, and the dynamic ring is contacted with the static ring under the elastic action of the wave spring to form a sealing pair.

Through adopting above-mentioned technical scheme, through seting up the annular seal groove on pushing away the pad, and imbed ring type seal in the annular seal groove, it supplies wave spring and pushes away the pad installation to rotate the seat simultaneously to set up the mounting groove, realize wave spring's seal installation, it is better to push away the pad and rotate the leakproofness between the seat, make landfill leachate be difficult to soak wave spring more, and the wave spring of the difficult contact of granule in landfill leachate more, make wave spring be difficult to wear and tear, the service life is prolonged, wave spring is compared in coil spring also be difficult to the quilt wearing and tearing more simultaneously.

Preferably, the side wall of the movable ring seat facing the push pad is provided with an annular mounting groove, the annular mounting groove is embedded with a movable ring O-shaped ring, and the movable ring O-shaped ring is clamped among the push pad, the rotating shaft and the movable ring seat.

Through adopting above-mentioned technical scheme, through setting up rotating ring O type circle, further improve and push away the pad, the leakproofness between pivot and rotating ring seat three, landfill leachate is difficult to more follow and pushes away the leakproofness infiltration between pad and the pivot, the spring is difficult to contact landfill leachate more, especially particulate matter in the landfill leachate, rotating ring O type circle and ring seal cooperation shutoff, improve sealed effect, further reduce wave spring's wearing and tearing, push away the pad under wave spring's promotion, extrude rotating ring O type circle, make rotating ring O type circle warp, further improve the sealed effect of rotating ring O type circle.

Preferably, the mounting groove is the ladder groove, the mounting groove includes the less spring mounting groove of external diameter and the great mounting groove that slides of external diameter, wave spring install in the spring mounting groove, just wave spring with the one end that pushes away the pad butt is located slide in the mounting groove.

Through adopting above-mentioned technical scheme, through setting up spring mounting groove, play limiting displacement for when promoting to slide in the mounting groove that slides, the tank bottom of the mounting groove that slides can only be slided at most, when receiving great axial external force, wave spring is difficult to under the extrusion deformation energetically and produce the deformation that can not resume, keeps wave spring's performance, and the effect of axial restriction drunkenness is played to a certain extent.

Preferably, the outer side wall of the moving ring seat is provided with a sliding groove, the sliding groove is formed in the axis direction of the moving ring seat and penetrates through the moving ring seat, a limiting block is arranged on the groove wall of the sliding installation groove, and the limiting block is installed in the sliding groove in a sliding manner.

Through adopting above-mentioned technical scheme, through seting up the spout on the rotating ring seat, set up the stopper at the cell wall of the mounting groove that slides, through the cooperation of stopper and spout, play circumference limiting displacement to the rotating ring seat for the rotating ring seat is difficult to relative transmission seat and rotates, and the rotation of pivot drives the transmission seat rotatory, thereby drives the more stable rotation of rotating ring seat, finally realizes the more stable rotation of the relative quiet ring of rotating ring, keeps the better sealed effect of mechanical seal.

Preferably, the tight set screw hole has been seted up on the transmission seat, the tight set screw hole has a plurality ofly, and is a plurality of tight set screw hole follows transmission seat circumference interval sets up, tight set screw hole internal thread is fixed with the holding screw, holding screw butt pivot.

Through adopting above-mentioned technical scheme, through seting up tight screw hole at the transmission housing to the holding screw of fix with screw and pivot butt makes the rotation of pivot drive transmission housing that can be better, keeps the stability of transmission, further improves sealed effect.

Preferably, the inner wall of the transmission seat facing the rotating shaft is provided with an annular groove, and an annular rubber sleeve is embedded in the annular groove.

Through adopting above-mentioned technical scheme, set up the ring channel and inlay in the ring channel and adorn annular rubber sleeve to improve the leakproofness between transmission seat and the pivot, make during landfill leachate is difficult to infiltrate the spring mounting groove more, make wave spring be difficult for wearing and tearing more.

Preferably, the fastening screw hole penetrates through the annular groove, a through hole for the top fastening screw to pass through is formed in the annular rubber sleeve, and the diameter of the through hole is smaller than that of the fastening screw hole.

Through adopting above-mentioned technical scheme, annular rubber sleeve warp under the tight top screw extrusion, further improves the leakproofness between transmission seat and the pivot to make during landfill leachate is difficult to infiltrate spring mounting groove more, make wave spring difficult wearing and tearing more.

Preferably, the outer side wall of the leather cup is provided with a plurality of sealing bulges, and the sealing bulges are arranged at intervals along the axial direction of the leather cup.

Through adopting above-mentioned technical scheme, the leather cup is used for installing quiet ring for frictional force between quiet ring and the leather cup is great, and the installation between the better realization quiet ring and the pump body makes the quiet ring relative pump body static, sets up a plurality of sealed archs at the leather cup lateral wall, and sealed protruding back on the pump body is installed at the leather cup, and sealed protruding warp under receiving the extrusion, thereby better realization is sealed between the leather cup and the pump body, improves mechanical seal's sealed effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the annular sealing groove is formed in the push pad, the annular sealing ring is embedded in the annular sealing groove, the mounting groove is formed in the rotating seat for mounting the wave spring and the push pad, the wave spring is mounted in a sealing mode, the sealing performance between the push pad and the rotating seat is better, the garbage leachate is more difficult to soak the wave spring, particles in the garbage leachate are more difficult to contact the wave spring, the wave spring is not easy to wear, the service life is prolonged, and meanwhile, the wave spring is more difficult to wear compared with a spiral spring;

2. by arranging the movable ring O-shaped ring, the sealing performance among the pushing pad, the rotating shaft and the movable ring seat is further improved, the garbage leachate is more difficult to permeate from the sealing performance between the pushing pad and the rotating shaft, the spring is more difficult to contact the garbage leachate, particularly particles in the garbage leachate, the movable ring O-shaped ring is matched with the annular sealing ring for plugging, the sealing effect is improved, the abrasion of the wave spring is further reduced, the pushing pad is pushed by the wave spring to extrude the movable ring O-shaped ring, so that the movable ring O-shaped ring is deformed, and the sealing effect of the movable ring O-shaped ring is further improved;

3. through set screw hole is seted up at the transmission seat, and the holding screw of fix with screw and pivot butt, make the rotation of pivot drive transmission seat that can be better, keep the stability of transmission, further improve sealed effect, the annular rubber sleeve of centre gripping between transmission seat and pivot simultaneously, annular rubber sleeve warp under the holding screw extrusion simultaneously, improve the leakproofness between transmission seat and the pivot, thereby make landfill leachate be difficult to during the infiltration spring mounting groove more.

Drawings

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

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

fig. 4 is an enlarged view at C in fig. 1.

Reference numerals: 1. a rotating shaft; 2. a transmission seat; 21. an annular groove; 22. an annular rubber sleeve; 221. perforating; 23. fastening screw holes; 24. tightening the top screw; 251. a spring mounting groove; 252. a sliding mounting groove; 2521. a limiting block; 3. a wave spring; 4. pushing the pad; 41. an annular seal groove; 42. an annular seal ring; 5. a movable ring seat; 51. an annular mounting groove; 52. a moving ring O-shaped ring; 53. a chute; 54. installing an embedding groove; 6. a moving ring; 7. a leather cup; 71. sealing the protrusion; 8. and (4) a stationary ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses mechanical seal for pump that is suitable for landfill leachate medium. Referring to fig. 1, a mechanical seal for a pump suitable for a landfill leachate medium comprises a movable ring component rotating along with a rotating shaft 1 and a stationary ring component fixed with the pump body, wherein the movable ring component comprises a transmission seat 2, a wave spring 3, a push pad 4, a movable ring seat 5 and a movable ring 6 which are coaxially arranged with the rotating shaft 1 and sleeved outside the rotating shaft 1.

Referring to fig. 1 and 2, annular groove 21 has been seted up towards the inner wall of pivot 1 to transmission seat 2 one end, annular groove 21 is embedded to be equipped with annular rubber sleeve 22, annular rubber sleeve 22 centre gripping is between transmission seat 2 and pivot 1, set screw hole 23 has still been seted up on transmission seat 2, set screw hole 23 has a plurality ofly, a plurality of set screw holes 23 set up along 2 circumference intervals of transmission seat, and set screw hole 23's quantity is the odd number, set screw hole 23 link up annular groove 21, and set screw hole 22 is last seted up with a plurality of set screw hole 23 one-to-ones and coaxial perforation 221, and the diameter of perforation 221 is less than set screw hole 23's diameter, equal thread fixing has set screw 24 in every set screw hole 23, set screw 24 passes perforation 221 extrusion annular rubber sleeve 22 and butt pivot 1.

The mounting groove has been seted up on transmission seat 2, and pivot 1 passes the mounting groove and passes, the mounting groove is the ladder groove, the mounting groove includes the great mounting groove 252 that slides of the less spring mounting groove 251 of external diameter and external diameter, wave spring 3 installs in spring mounting groove 251, and wave spring 3 is located the mounting groove 252 that slides with the one end that pushes away 4 butts of pad, push away pad 4 and rotating ring seat 5 and install in proper order in the mounting groove 252 that slides, and wave spring 3 centre gripping is between the tank bottom of pushing away pad 4 and spring mounting groove 251.

Referring to fig. 1 and 3, an annular sealing groove 41 is formed in a side wall of the push pad 4 facing a groove wall of the sliding mounting groove 252, an annular sealing ring 42 is embedded in the annular sealing groove 41, and the annular sealing ring 42 is clamped between the push pad 4 and the groove wall of the sliding mounting groove 252.

The side wall of the movable ring seat 5 facing the push pad 4 is provided with an annular mounting groove 51, the rotating shaft 1 passes through the annular mounting groove 51, a movable ring O-shaped ring 52 is embedded in the annular mounting groove 51, and the movable ring O-shaped ring 52 is clamped among the push pad 4, the rotating shaft 1 and the movable ring seat 5.

The spout 53 has been seted up to the lateral wall of rotating ring seat 5, and spout 53 is seted up and is run through rotating ring seat 5 along 5 axial directions of rotating ring seat, and spout 53 has seted up a plurality ofly, and the quantity of spout 53 is odd number, and the cell wall of the mounting groove 252 that slides is provided with stopper 2521, and stopper 2521 also is provided with a plurality ofly, and a plurality of stoppers 2521 and a plurality of spout 53 one-to-one, stopper 2521 slide and install in spout 53.

The side wall of the movable ring seat 5 departing from the transmission seat 2 is provided with an installation embedding groove 54, and the movable ring 6 is embedded in the installation embedding groove 54.

The quiet ring subassembly includes leather cup 7 and quiet ring 8, and leather cup 7 and quiet ring 8 also coaxial and suit in the pivot 1 outside with pivot 1, and leather cup 7 is seted up flutedly towards the lateral wall of rotating ring seat 5, and quiet ring 8 inlays and adorns in the recess of leather cup 7, and leather cup 7 lateral wall is provided with sealed arch 71, and sealed arch 71 has a plurality ofly, and sealed arch 71 has four in this example, and four sealed archs 71 are along the setting of leather cup 7 axis direction interval.

The rotating ring 6 and the static ring 8 are mutually abutted, and the rotating ring 6 and the static ring 8 are made of hard alloy, so that the rotating ring 6 and the static ring 8 are not easy to wear, and the rotating ring 6 is always in contact with the static ring 8 under the elastic action of the wave spring 3 to form a sealing pair.

The application embodiment is suitable for the mechanical seal's for pump of landfill leachate medium implementation principle does: leather cup 7 is fixed on the pump body, corresponding quiet ring 8 is also fixed on the pump body, pivot 1 is rotatory, thereby it is rotatory along with pivot 1 to drive transmission seat 2, transmission seat 2 drives wave spring 3, it is rotatory together to push away pad 4 and rotating ring seat 5, because stopper 2521's existence, the rotatory transmission that remains stable between rotating ring seat 5 and the transmission seat 2, rotating ring seat 5 drives rotating ring 6 and rotates, thereby make rotating ring 6 quiet ring 8 relatively rotate, because wave spring 3's elastic force effect, rotating ring 6 contacts with quiet ring 8 all the time and constitutes sealed pair, thereby realize pivot 1 rotate down and the pump body between sealed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a be suitable for mechanical seal for pump of landfill leachate medium, includes the rotating ring subassembly that rotates along with pivot (1) and the quiet ring subassembly fixed with the pump body, its characterized in that: the movable ring component comprises a transmission seat (2), a wave spring (3), a pushing pad (4), a movable ring seat (5) and a movable ring (6) which are coaxially arranged, a mounting groove is formed in the transmission seat (2), the wave spring (3), the pushing pad (4) and the movable ring seat (5) are sequentially mounted in the mounting groove, the wave spring (3) is clamped between the pushing pad (4) and the bottom of the mounting groove, an annular sealing groove (41) is formed in the side wall, facing the wall of the mounting groove, of the pushing pad (4), an annular sealing ring (42) is embedded in the annular sealing groove (41), an installation embedding groove (54) is formed in the side wall, facing away from the transmission seat (2), of the movable ring seat (5), and the movable ring (6) is embedded in the installation embedding groove (54);

the static ring (8) component comprises a leather cup (7) and a static ring (8), the static ring (8) is embedded in the leather cup (7), and the dynamic ring (6) is in contact with the static ring (8) under the elastic action of the wave spring (3) to form a sealing pair.

2. The mechanical seal for a pump suitable for landfill leachate medium of claim 1, characterized in that: an annular mounting groove (51) is formed in the side wall, facing the push pad (4), of the movable ring seat (5), a movable ring O-shaped ring (52) is embedded in the annular mounting groove (51), and the movable ring O-shaped ring (52) is clamped among the push pad (4), the rotating shaft (1) and the movable ring seat (5).

3. The mechanical seal for a pump suitable for landfill leachate medium of claim 1, characterized in that: the mounting groove is the ladder groove, the mounting groove includes the less spring mounting groove of external diameter (251) and the great mounting groove that slides of external diameter (252), wave spring (3) install in spring mounting groove (251), just wave spring (3) with the one end that pushes away pad (4) butt is located slide in mounting groove (252).

4. The mechanical seal for a pump suitable for landfill leachate medium of claim 3, characterized in that: sliding grooves (53) are formed in the outer side wall of the movable ring seat (5), the sliding grooves (53) are formed in the axial direction of the movable ring seat (5) and penetrate through the movable ring seat (5), limiting blocks (2521) are arranged on the groove walls of the sliding mounting grooves (252), and the limiting blocks (2521) are slidably mounted in the sliding grooves (53).

5. The mechanical seal for a pump suitable for landfill leachate medium of claim 1, characterized in that: tight set screw hole (23) have been seted up on transmission seat (2), tight set screw hole (23) have a plurality ofly, and are a plurality of tight set screw hole (23) are followed transmission seat (2) circumference interval sets up, tight set screw hole (23) internal thread is fixed with set screw (24), set screw (24) butt pivot (1).

6. The mechanical seal for a pump suitable for landfill leachate medium of claim 5, characterized in that: the inner wall of the transmission seat (2) facing the rotating shaft (1) is provided with an annular groove (21), and an annular rubber sleeve (22) is embedded in the annular groove (21).

7. The mechanical seal for a pump suitable for landfill leachate medium of claim 6, characterized in that: the tightening screw hole (23) penetrates through the annular groove (21), a through hole (221) for the tightening screw (24) to penetrate through is formed in the annular rubber sleeve (22), and the diameter of the through hole (221) is smaller than that of the tightening screw hole (23).

8. The mechanical seal for a pump suitable for landfill leachate medium of claim 1, characterized in that: the outer side wall of the leather cup (7) is provided with a plurality of sealing bulges (71), and the sealing bulges (71) are arranged in a plurality of intervals along the axial direction of the leather cup (7).