CN215215012U

CN215215012U - End face sealing device of high-pressure rotary valve

Info

Publication number: CN215215012U
Application number: CN202120160724.8U
Authority: CN
Inventors: 王京
Original assignee: Hefei Keshi Machinery Technology Co ltd
Current assignee: Hefei Keshi Machinery Technology Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-12-17
Anticipated expiration: 2031-01-20

Abstract

The utility model relates to a high pressure rotary valve seals technical field, especially relates to a high pressure rotary valve end face seal device. The to-be-solved technical problem of the utility model is that traditional end face pressure seal has adopted the spring to compress tightly, and not nimble enough and spring effort are uneven, also neglected loading very easily and take off the mistake during maintenance, and unbalanced pressure causes the vice too fast wearing and tearing of end face seal easily. In order to solve the problems in the prior art, the utility model provides a high-pressure rotary valve end face sealing device, which consists of an end cover and a sealing seat, and is integrally cast and formed with the end cover through a flange without adding extra parts, and the position precision can be better ensured, so as to ensure the axial action of the sealing seat, and the sealing seat can obtain stable and continuous balanced thrust by using compressed air to generate thrust, thereby prolonging the service life of the device; the guide ring is installed, so that the installation and maintenance are more convenient, and the lip seal is designed, so that the air can be conveniently compressed in a rotary sealing mode.

Description

End face sealing device of high-pressure rotary valve

Technical Field

The utility model relates to a sealing device, concretely relates to high pressure rotary valve end face seal device, the utility model relates to a high pressure rotary valve seals technical field.

Background

High-pressure rotary valve is used for dense phase pneumatic conveyor system, and the primary action is unload and the pressurize, inserts the air compressor machine work back when the pipeline, and high-pressure rotary valve can guarantee that pneumatic conveyor pipeline has lasting propelling movement pressure all the time, is used for accomplishing the normal transport of solid material, in order to reach the purpose of pressurize, need seal the rotary valve with high-pressure rotary valve sealing device, but current high-pressure rotary valve sealing device still has a lot of problems or defects:

the existing high-pressure rotary valve sealing device has the disadvantages that the service life of the end face seal is not long due to the existence of solid materials, compressed air needs to be added to form back blowing in order to solve the problem, however, the consumption of instrument air is increased due to open back blowing, and the pressure sealing needs to be carried out on the end face in order to reduce unnecessary consumption. The traditional end face pressure seal adopts spring compression, the number of the springs is given by design and is not flexible enough, the acting force of the springs is not uniform, the springs are easy to leak and lose during maintenance, and the unbalanced pressure easily causes the over-quick abrasion of an end face seal pair.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high pressure rotary valve end face seal device through setting up end cover and seal receptacle to solve traditional end face pressure seal who provides in the above-mentioned background art and adopted the spring to compress tightly, spring quantity is given by the design, and is not nimble enough, and the spring effort is uneven, also neglects the dress very easily and takes off the mistake during maintenance, and unbalanced pressure causes the vice problem of wearing and tearing excessively fast of end face seal easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high pressure rotary valve end face seal device, includes end cover, "O" type circle and pivot, the fixed cover of outer wall of pivot has connect the rotor, the end cover has been cup jointed in the outer wall activity of pivot, seal through setting up the lip between pivot and the end cover and form seal structure, the lip seals and is kept away from a side of rotor and is provided with porose circlip, a side center department that the end cover is close to the rotor is provided with the flange, a side fixed mounting that the flange is close to the rotor has the guide ring, the outside joint of flange has the seal receptacle, the equal activity of guide ring runs through the seal receptacle, a side that the end cover was kept away from to the seal receptacle is provided with the multiunit silo, the multiunit the inside packing of silo has the filler, the end cover outside is provided with second air inlet and first air inlet as the axial symmetry with the pivot.

Preferably, a material escaping flat groove is designed on one side face, close to the elastic retainer ring for the hole, of the end cover.

Preferably, the outer wall of the rotor is fixedly provided with a shell.

Preferably, the end cap and the flange are integrally cast and formed.

Preferably, the sealing structure is formed between the flange and the sealing seat through an O-shaped ring.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the flange and the end cover of the fixed seal seat are integrally cast and formed, no additional part is needed to be added, the position precision can be better ensured, and the axial action of the seal seat is further ensured;

(2) the utility model discloses install and lead the only ring, lead the installation that only ring does not receive the installation order influence of seal receptacle, compare in prior art, the utility model discloses be convenient for more install and maintain, through leading the rotation that only ring restricted the seal receptacle moreover to reduce frictional force, the utility model discloses the design has the lip to seal and hole circlip, the rotary seal compressed air of being convenient for.

Drawings

FIG. 1 is a schematic sectional view of the front view of the present invention;

fig. 2 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention;

fig. 3 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention;

fig. 4 is an enlarged schematic view of the structure at C in fig. 1 according to the present invention.

In the figure: 1. an end cap; 2. a first air inlet; 3. escaping the flat trough; 4. a housing; 5. sealing the lips; 6. a second air inlet; 7. a rotor; 8. a guide ring; 9. a trough; 10. a sealing seat; 11. a filler; 12. a rotating shaft; 13. a circlip for a hole; 14. a flange; 15. an "O" shaped ring.

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 high-pressure rotary valve end face sealing device comprises an end cover 1, an O-shaped ring 15 and a rotary shaft 12, wherein a rotor 7 is fixedly sleeved on the outer wall of the rotary shaft 12, the end cover 1 is movably sleeved on the outer wall of the rotary shaft 12, a sealing structure is formed between the rotary shaft 12 and the end cover 1 by arranging a lip seal 5, a hole elastic retainer ring 13 is arranged on one side face, away from the rotor 7, of the lip seal 5, a flange 14 is arranged at the center of one side face, close to the rotor 7, of the end cover 1, a guide ring 8 is fixedly arranged on one side face, close to the rotor 7, of the flange 14, a sealing seat 10 is clamped outside the flange 14, the guide ring 8 movably penetrates through the sealing seat 10, the guide ring (8) can be installed from the outside of the sealing seat (10) and is more convenient, a plurality of groups of material grooves 9 are arranged on one side face, away from the end cover 1, and a plurality of groups of material grooves 9 are filled with filler 11, the outer side of the end cover 1 is symmetrically provided with a second air inlet 6 and a first air inlet 2 by taking the rotating shaft 12 as an axis, and the second air inlet 6 and the first air inlet 2 are respectively used for back flushing and thrust generation.

Specifically, a material escaping flat groove 3 is designed on one side face, close to the elastic retainer ring 13 for the hole, of the end cover 1, and the material escaping flat groove 3 is used for warning whether the lip seal 5 fails or not.

Specifically, the outer wall of the rotor 7 is fixedly provided with a housing 4, and the housing 4 is used for protecting the rotor 7.

Specifically, the end cover 1 and the flange 14 are integrally cast and formed, and the end cover 1 and the flange 14 are integrally cast and formed, so that additional parts do not need to be added, and the position precision can be better ensured.

In particular, a sealing structure is formed between the flange 14 and the sealing seat 10 by an "O" ring 15, and the "O" ring 15 is used for sealing compressed air.

The working principle is as follows: the flange 14 of the fixed seal seat 10 of the device is integrally cast with the end cover 1 without adding extra parts, the position precision can be better ensured, the O-shaped ring 15 is fixed on the flange 14 and is convenient to install in an open mode, the freedom degree of the seal seat 10 is limited by the flange 14 after the O-shaped ring 15 is fixed, only one axial movement freedom degree is reserved, when compressed air is filled into a cavity formed between the end cover 1 and the seal seat 10 through the second air inlet 6, the seal seat 10 can move, because the filler 11 is made of wear-resistant mixed materials, the seal seat 10 with single freedom degree can drive the filler 11 to be pressed on the rotor 7 together, thereby forming a seal pair, meanwhile, compressed air with certain pressure is introduced through the first air inlet 2 and acts between the end surfaces of the seal pair, gas protection can be formed, thereby abrasion is reduced, and the pressure of two compressed air can be controlled by a pneumatic control component, the lip seal 5 and the circlip for hole 13 are used to seal compressed air against gas leakage by rotation.

In the description of the present invention, it is to be understood that the terms "center", "middle", "eccentric", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

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

1. The utility model provides a high pressure rotary valve face seal device which characterized in that: the sealing device comprises an end cover (1), an O-shaped ring (15) and a rotating shaft (12), wherein a rotor (7) is fixedly sleeved on the outer wall of the rotating shaft (12), the end cover (1) is sleeved on the outer wall of the rotating shaft (12), a sealing structure is formed between the rotating shaft (12) and the end cover (1) by arranging a lip seal (5), a side face, away from the rotor (7), of the lip seal (5) is provided with an elastic retainer ring (13) for holes, a flange (14) is arranged at the center of one side face, close to the rotor (7), of the end cover (1), a guide ring (8) is fixedly installed on one side face, close to the rotor (7), of the flange (14), a sealing seat (10) is clamped to the outer portion of the flange (14), the guide ring (8) is movably arranged to penetrate through the sealing seat (10), and a plurality of material grooves (9) are arranged on one side face, away from the end cover (1), of the sealing seat (10), the interior of the multiple groups of material grooves (9) is filled with fillers (11), and the outer side of the end cover (1) is provided with a second air inlet (6) and a first air inlet (2) in axial symmetry by taking the rotating shaft (12) as an axis.

2. A high pressure rotary valve face seal assembly as claimed in claim 1 wherein: and a material escaping flat groove (3) is designed on one side surface of the end cover (1) close to the elastic retainer ring (13) for the hole.

3. A high pressure rotary valve face seal assembly as claimed in claim 1 wherein: and a shell (4) is fixedly arranged on the outer wall of the rotor (7).

4. A high pressure rotary valve face seal assembly as claimed in claim 1 wherein: the end cover (1) and the flange (14) are integrally cast and formed.

5. A high pressure rotary valve face seal assembly as claimed in claim 1 wherein: and a sealing structure is formed between the flange (14) and the sealing seat (10) through an O-shaped ring (15).