CN219827716U

CN219827716U - Non-contact high-rotation-speed inflatable sealing device

Info

Publication number: CN219827716U
Application number: CN202320967981.1U
Authority: CN
Inventors: 张卫山; 李建勇; 王秀芝; 李婷
Original assignee: Qingdao Brseal Technology Co ltd
Current assignee: Qingdao Brseal Technology Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-10-13
Anticipated expiration: 2033-04-25

Abstract

The utility model relates to a non-contact high-rotation-speed inflatable sealing device which comprises a movable ring and a mounting ring, wherein the mounting ring comprises a main ring body and a retainer ring which are connected through bolts, an inner cavity is formed between the main ring body and the retainer ring, the movable ring is arranged in the inner cavity, a plurality of first air holes are circumferentially formed in the side wall of the movable ring, the first air holes penetrate through the side wall of the movable ring, an intermediate ring is sleeved on the side wall of the movable ring and is arranged in the inner cavity, bolt holes are formed in the opposite positions of the movable ring and the intermediate ring, the bolt holes are used for installing bolts for connecting the movable ring and the intermediate ring, a second air hole is circumferentially formed in the intermediate ring, the second air hole penetrates through the side wall of the intermediate ring, a third air hole is formed in the main ring body, and the third air hole penetrates through the side wall of the main ring. The utility model has the effects of reducing friction loss of the rotating shaft and the sealing element and reducing maintenance workload of the sealing element.

Description

Non-contact high-rotation-speed inflatable sealing device

Technical Field

The utility model relates to the field of inflation sealing, in particular to a non-contact high-rotation-speed inflation sealing device.

Background

In order to ensure the running performance of the motor, sealing structures are arranged at the rotating shafts of all types of motors, so that lubricating oil in the equipment is prevented from leaking into the motor and damaging the motor.

The non-contact inflatable seal is a special seal form which forms forward seal pressure along the axial gap by utilizing the pressure of a small amount of air, inert gas or water, can prevent the leakage of powder objects in the seal cavity and can also prevent external pollutants from entering the seal cavity. The non-contact inflatable seal can be customized according to customer requirements, thereby providing effective sealing in various complex applications (stirrers, mixers, screw conveyors, pulpers and other product handling equipment), and effectively solving the problems of shaft runout, shaft deflection, shaft displacement and eccentricity through special structural design.

At present, a motor rotating shaft sealing piece is generally in contact type, the contact type cost is low, the motor rotating shaft sealing piece is easy to realize, and the motor rotating shaft sealing piece has the defect of high friction loss.

With respect to the related art described above, the inventors believe that the contact loss of the rotating shaft and the sealing member leads to problems of increased production cost, increased maintenance workload, increased downtime, and environmental pollution.

Disclosure of Invention

In order to reduce friction loss between the rotating shaft and the sealing element and reduce maintenance workload of the sealing element, the utility model provides a non-contact high-rotation-speed inflatable sealing device.

The non-contact high-rotation-speed inflatable sealing device provided by the utility model adopts the following technical scheme:

the utility model provides a non-contact high rotational speed inflatable sealing device, including moving ring and collar, the collar includes main ring body and retaining ring that looks bolted connection, form the inner chamber between main ring body and the retaining ring, the moving ring sets up in the inner chamber, a plurality of first gas pockets have been seted up to moving ring lateral wall circumference, first gas pocket runs through moving ring lateral wall, the cover is equipped with the intermediate ring on the moving ring lateral wall, the intermediate ring sets up at the inner chamber, the bolt hole has all been seted up to moving ring and intermediate ring relative position, the bolt hole is used for installing the bolt of connecting moving ring and intermediate ring, the second gas pocket has been seted up to the circumference on the intermediate ring, the second gas pocket runs through intermediate ring lateral wall, the third gas pocket has been seted up on the main ring body, the third gas pocket runs through main ring body lateral wall.

Through adopting above-mentioned technical scheme, the rotating ring that connects gradually, go between and the installation ring has formed non-contact high rotational speed inflatable seal device, the rotating shaft of output motor is pegged graft the rotating ring, the staff is to last to carry gas in the third gas pocket of main ring body, the gas is through the third gas pocket on the main ring body in proper order, the second gas pocket on the middle ring and the first gas pocket of fine distribution on the rotating ring, form high atmospheric pressure in the clearance of rotating shaft and rotating ring inner circle outer wall, except having the leakage that prevents the interior powdery material of equipment cavity, prevent that external pollutant from getting into outside the sealed cavity, still possess and keep the effect of interval contactless between rotating ring and the rotating shaft, thereby realize reducing rotating shaft and sealing member friction loss, reduce maintenance work load.

Optionally, the first air holes distributed in the same cross section of the movable ring are arranged in a row, and a plurality of rows of first air holes are axially formed in the side wall of the movable ring.

Through adopting above-mentioned technical scheme, gas gets into in the clearance of pivot and rotating ring from a plurality of first gas holes of evenly distributed in the side of rotating ring from the second gas pocket, realizes the homogeneity of the outer pressure of pivot, guarantees the leakproofness, and in addition, the first gas hole of multirow has increased the thickness of high-pressure air wall, has further strengthened sealed effect.

Optionally, one end of the middle ring is connected with a movable ring retainer ring through bolts, and the movable ring retainer ring is arranged in an inner cavity between the main ring body and the retainer ring.

Through adopting above-mentioned technical scheme, the setting of moving ring retaining ring makes the moving ring keep the accurate joint with the intermediate ring, realizes spacing to moving ring axial, can effectively alleviate the moving ring unstable problem in the intermediate ring.

Optionally, the middle ring is close to the one end circumference of moving ring retaining ring and has seted up the strengthening groove, and the moving ring retaining ring is close to the one end rigid coupling of middle ring has the strengthening ring with the strengthening groove adaptation, strengthening ring joint and strengthening groove.

Through adopting above-mentioned technical scheme, the fixed effect of collar and ring in the middle of strengthening with the reinforcement groove is strengthened, and the high-speed rotation of pivot and the continuous operation of sealing member inflation process need fastening connection in order to guarantee the exact joint of ring with the ring retainer ring, and the contact surface smoothness of ring retainer ring and middle ring has been improved to reinforcement groove, only relies on the fixed mode of bolt can't realize the problem of effective fixation.

Optionally, the outer wall of the inner ring of the middle ring and the outer wall of the inner ring of the movable ring retainer ring are fixedly connected with sealing rings, and the sealing rings are correspondingly arranged at two ends of the movable ring in the middle ring.

Through adopting above-mentioned technical scheme, seal ring butt moving ring both ends, when gas from the second gas pocket aerifys towards the first gas hole on the moving ring, seal ring reduces the outflow phenomenon of gas, ensures that gas reaches pivot department through first gas hole in maximum, seals the pivot, and seal ring has strengthened sealed effect with the mode that reduces the gas leakage volume.

Optionally, a plurality of constant head tanks have been seted up on the one end inner wall that main ring body is close to the movable ring retaining ring, and threaded connection has a plurality of positioning bolts that run through the movable ring retaining ring on the movable ring retaining ring, and a plurality of positioning bolts circumference distribute at movable ring retaining ring one end edge, and a plurality of constant head tanks correspond positioning bolt circumference and distribute, and positioning bolt is used for the movable ring retaining ring to be connected with the intermediate ring.

Through adopting above-mentioned technical scheme, the constant head tank corresponds the nut of positioning bolt and offers, with positioning bolt spacing in fixed position department, realizes the fixed to the movable ring retaining ring through fixing to positioning bolt, prevents that movable ring retaining ring and intermediate ring from lasting deflection in main ring body, influences gaseous conveying effect.

Optionally, an air pressure hole is formed in the main ring body, and the air pressure hole is used for being inserted into the pressure measuring meter.

Through adopting above-mentioned technical scheme, the atmospheric pressure hole is used for installing the manometer, and the probe of manometer is pegged graft in the inner chamber in main ring body through the atmospheric pressure hole, and the manometer shows the atmospheric pressure in the main ring hole, and the staff is through observing the manometer in order to real-time control gaseous delivery volume, and when the atmospheric pressure reduces, in time increases the ventilation volume in the sealing member in order to ensure sealed effect.

Optionally, a plurality of mounting grooves are formed in the main ring body, the length direction of each mounting groove is parallel to the axial direction of the main ring body, and the plurality of mounting grooves are distributed at equal intervals along the circumferential direction of the main ring body.

Through adopting above-mentioned technical scheme, the installation department of mounting groove joint output motor aligns the installation department back joint on the equipment simultaneously with a plurality of mounting grooves, realizes the installation of main ring body and output motor.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is an exploded view of an embodiment of the present utility model.

FIG. 3 is a cross-sectional view of the main ring body to highlight the mounting groove.

Fig. 4 is a schematic view of the structure for highlighting the seal ring.

FIG. 5 is a schematic view of a structure for highlighting the reinforcing ring

Fig. 6 is a schematic structural view of the moving ring.

Reference numerals illustrate: 1. a mounting ring; 11. a mounting groove; 12. a retainer ring; 13. a main ring body; 14. a positioning groove; 15. a first air hole; 16. an air pressure hole; 2. a moving ring; 21. a third air hole; 22. bolt holes; 3. an intermediate ring; 31. a movable ring retainer ring; 32. positioning bolts; 33. a second air hole; 34. sealing ring; 35. a reinforcing groove; 36. and a reinforcing ring.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-6.

The embodiment of the utility model discloses a non-contact high-rotation-speed inflatable sealing device. Referring to fig. 1, the non-contact high-rotation-speed inflatable sealing device comprises a mounting ring 1 and a moving ring 2, wherein the moving ring 2 is arranged in the mounting ring 1; a plurality of mounting grooves 11 are formed in the edge of the side wall of the mounting ring 1, the length direction of the mounting grooves 11 is parallel to the circumferential direction of the mounting ring 1, and the plurality of mounting grooves 11 are distributed along the circumferential direction of the mounting ring 1. The movable ring 2 is inserted into the rotating shaft of the output motor, the mounting grooves 11 are clamped with the mounting parts of the inner cavity wall of the motor, and a plurality of mounting grooves 11 are aligned and clamped with the mounting parts of the inner cavity wall of the motor simultaneously by a worker, so that the clamping connection between the mounting ring 1 and the motor is realized.

Referring to fig. 2, the mounting ring 1 comprises a check ring 12 and a main ring body 13 which are connected through bolts, and an inner cavity of the mounting ring 1 is formed between the check ring 12 and the main ring body 13; the middle ring 3 is sleeved outside the movable ring 2, one end of the middle ring 3 is provided with a movable ring retainer ring 12, an inner cavity of the middle ring 3 is formed between the movable ring retainer ring 12 and the middle ring 3, the movable ring 2 is arranged in the inner cavity of the middle ring 3, and the middle ring 3 and the movable ring retainer ring 12 are arranged in the inner cavity of the main ring body 13; the movable ring retainer 12 is in threaded connection with a plurality of positioning bolts 32, the plurality of positioning bolts 32 are axially parallel to the axial direction of the intermediate ring 3, and the plurality of positioning bolts 32 are distributed at equal intervals along the circumferential direction of the movable ring retainer 12. The movable ring 2, the middle ring 3 and the mounting ring 1 form a main body part of the non-contact high-rotation-speed inflation sealing device, the check ring 12 is connected with the main ring body 13 in a bolt connection mode, the movable ring check ring 12 is connected with the middle ring 3 in a bolt connection mode, and the check ring 12 and the movable ring check ring 12 respectively realize the sealing of the inner cavity of the mounting ring 1 and the inner cavity of the middle ring 3.

Referring to fig. 3, a plurality of positioning grooves 14 are formed in an inner wall of one end of the main ring body 13 corresponding to a plurality of positioning bolts 32, and the plurality of positioning grooves 14 are circumferentially distributed on a side wall of the main ring body 13 at equal intervals; the side wall of the main ring body 13 is provided with a third air hole 21, and the third air hole 21 penetrates through the side wall of the main ring body 13; the side wall of the main ring body 13 is provided with an air pressure hole 16 with the same structure as the third air hole 21, and the air pressure hole 16 and the third air hole 21 are respectively and symmetrically arranged along the center of the cross section of the main ring body 13. The positioning groove 14 is used for clamping the nut of the positioning bolt 32, so that the fixation of the movable ring retainer 12 provided with the positioning bolt 32 is realized, and the limiting effect of the middle ring 3 connected with the movable ring retainer 12 is achieved; the staff connects fan and air-supply line in third gas pocket 21, makes gas continuously carry to sealing device inside from third gas pocket 21, loops through intermediate ring 3, moving ring 2 reach the clearance of pivot and moving ring 2 in proper order, forms high-pressure air wall, simultaneously, the external manometer of atmospheric pressure hole 16, and the end of manometer is pegged graft in sealing device through atmospheric pressure hole 16, and the staff is through apparent pressure of observing sealing device of pressure measuring, and when pressure reduced, timely increase gaseous delivery volume keeps sealing device stable airtight effect.

Referring to fig. 4, the intermediate ring 3 is provided with a plurality of second air holes 33 penetrating through the sidewall of the intermediate ring 3, and the plurality of second air holes 33 are circumferentially distributed along the sidewall of the intermediate ring 3; wherein three second air holes 33 are used as the bolt holes 22, and the three bolt holes 22 are equally spaced circumferentially along the intermediate ring 3; sealing rings 34 are fixedly connected to the outer wall of the inner ring of the middle ring 3 and the outer wall of the inner ring of the movable ring retainer ring 12, the sealing rings 34 are correspondingly arranged at two ends of the movable ring 2 in the middle ring 3, and the sealing rings 34 are abutted against the two ends of the movable ring 2. Bolts used for splicing and connecting the middle ring 3 and the movable ring 2 are arranged in the bolt holes 22, and the movable ring 2 is abutted against the movable ring 2 through the end parts of the bolts, so that the limit of the movable ring 2 in the inner cavity of the middle ring 3 is realized; the sealing ring 34 is used for reducing outflow of gas when the gas flows along the second air hole 33 to the first air hole 15, ensuring that the gas reaches the rotating shaft through the first air hole 15 at the maximum, and enhancing sealing effect by reducing leakage of the gas.

Referring to fig. 4 and 5, a reinforcing groove 35 is circumferentially formed at one end of the middle ring 3, which is close to the movable ring retainer ring 12, and a reinforcing ring 36 adapted to the reinforcing groove 35 is fixedly connected at one end of the movable ring retainer ring 12, which is close to the middle ring 3, and the reinforcing ring 36 is clamped with the reinforcing groove 35. The fixing effect of the middle ring 3 and the movable ring 2 is enhanced by the reinforcing ring 36 and the reinforcing groove 35, so that the correct clamping connection of the middle ring 3 and the movable ring 2 is ensured, the smooth contact surface between the movable ring 2 and the retainer ring 12 and the middle ring 3 is improved, and the problem that effective fixation cannot be realized only by a bolt fixing mode is solved.

Referring to fig. 6, a plurality of first air holes 15 penetrating the moving ring 2 are formed in the side wall of the moving ring 2, the plurality of first air holes 15 are distributed along the circumferential direction of the moving ring 2, the first air holes 15 distributed in the cross section of the same moving ring 2 are in one row, and two rows of first air holes 15 are axially distributed in the side wall of the moving ring 2; three bolt holes 22 are formed in the side wall of the movable ring 2 corresponding to the three bolt holes 22 of the middle ring 3, the three bolt holes 22 are formed between the two rows of first air holes 15, the three bolt holes 22 are distributed at equal intervals along the circumferential direction of the side wall of the movable ring 2, and the bolt holes 22 in the movable ring 2 are used for inserting bolts for connecting the movable ring 2 with the middle ring 3. The sealing gas flows to the first air holes 15 on the movable ring 2 through the third air holes 21 on the main ring body 13 and the second air holes 33 on the middle ring 3 in sequence, and the densely distributed first air holes 15 enable the sealing gas to uniformly encircle the rotating shaft to form a high-pressure air wall, so that non-contact sealing is realized.

The implementation principle of the non-contact high-rotation-speed inflatable sealing device provided by the embodiment of the utility model is as follows: the sealing gas is continuously input into the sealing device in sequence, and the sealing gas uniformly surrounds the rotating shaft to form a high-pressure air wall through the third air hole 21 on the main ring body 13, the second air hole 33 on the middle ring 3 and the first air hole 15 on the movable ring 2, so that non-contact sealing is realized.

The sealing ring 34 serves to reduce outflow of the sealing gas during continuous supply of the sealing gas, ensure that the gas reaches the rotating shaft through the first gas holes 15 at a maximum amount, and enhance sealing effect by reducing leakage of the gas.

Staff looks over the manometer regularly, and when the manometer shows that the internal air pressure of sealing device reduces, in time increase the air current, guarantee sealing device's airtight effect.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A non-contact high-rotation-speed inflatable sealing device is characterized in that: the device comprises a movable ring (2) and a mounting ring (1), wherein the mounting ring (1) comprises a main ring body (13) and a check ring (12) which are connected through bolts, an inner cavity is formed between the main ring body (13) and the check ring (12), and the movable ring (2) is arranged in the inner cavity;

a plurality of first air holes (15) are formed in the circumferential direction of the side wall of the movable ring (2), and the first air holes (15) penetrate through the side wall of the movable ring (2);

the side wall of the movable ring (2) is sleeved with an intermediate ring (3), the intermediate ring (3) is arranged in the inner cavity, bolt holes (22) are formed in the positions, opposite to the intermediate ring (3), of the movable ring (2), and the bolt holes (22) are used for installing bolts for connecting the movable ring (2) and the intermediate ring (3);

second air holes (33) are circumferentially formed in the middle ring (3), and the second air holes (33) penetrate through the side wall of the middle ring (3);

the main ring body (13) is provided with a third air hole (21), and the third air hole (21) penetrates through the side wall of the main ring body (13).

2. The non-contact high-speed inflatable sealing apparatus of claim 1, wherein: the first air holes (15) distributed in the same cross section of the movable ring (2) are arranged in a row, and a plurality of rows of first air holes (15) are axially formed in the side wall of the movable ring (2).

3. The non-contact high-speed inflatable sealing apparatus of claim 1, wherein: one end of the middle ring (3) is connected with a movable ring retainer ring (12) through bolts, and the movable ring retainer ring (12) is arranged in an inner cavity between the main ring body (13) and the retainer ring (12).

4. A non-contact high speed inflatable sealing apparatus according to claim 3, wherein: the middle ring (3) is close to one end circumference of moving ring retaining ring (12) and has offered reinforcement groove (35), and one end rigid coupling that moving ring retaining ring (12) is close to middle ring (3) has with reinforcement groove (35) adaptation's reinforcement ring (36), reinforcement ring (36) joint and reinforcement groove (35).

5. The non-contact high-speed inflatable sealing apparatus of claim 1, wherein: sealing rings (34) are fixedly connected to the outer wall of the inner ring of the middle ring (3) and the outer wall of the inner ring of the movable ring retainer ring (12), and the sealing rings (34) are correspondingly arranged at two ends of the movable ring (2) in the middle ring (3).

6. The non-contact high-speed inflatable sealing apparatus of claim 1, wherein: a plurality of positioning grooves (14) are formed in the inner wall of one end, close to the movable ring body (13), of the movable ring retainer ring (12), a plurality of positioning bolts (32) penetrating through the movable ring retainer ring (12) are connected to the movable ring retainer ring (12) in a threaded mode, the positioning bolts (32) are circumferentially distributed at the edge of one end of the movable ring retainer ring (12), the positioning grooves (14) correspond to the positioning bolts (32) and are circumferentially distributed, and the positioning bolts (32) are used for connecting the movable ring retainer ring (12) with the middle ring (3).

7. The non-contact high-speed inflatable sealing apparatus of claim 1, wherein: the main ring body (13) is provided with an air pressure hole (16), and the air pressure hole (16) is used for being inserted into a pressure meter.

8. The non-contact high-speed inflatable sealing apparatus of claim 1, wherein: a plurality of mounting grooves (11) are formed in the main ring body (13), the length direction of the mounting grooves (11) is parallel to the axial direction of the main ring body (13), and the plurality of mounting grooves (11) are distributed at equal intervals along the circumferential direction of the main ring body (13).