CN208487212U - A kind of mechanically-sealing apparatus being able to bear strong corrosion - Google Patents

Abstract

The utility model provides a kind of mechanically-sealing apparatus being able to bear strong corrosion, including gland, connecting flange, cavity components, positioning sleeve and axle sleeve, the connecting flange, the cavity components inner ring, the positioning sleeve and the axle sleeve surround a seal chamber, two sides are equipped with the first stationary ring and the second stationary ring in the seal chamber, the spring base being fixed on the positioning sleeve is provided between first stationary ring and second stationary ring, the spring base both ends are equipped with the first rotating ring and second rotating ring, it is driven between first rotating ring and second rotating ring and the spring base by shift fork.The device can be avoided device and the metal erosion of media contact position is impaired, guarantee the sealing effect and service life of device.

Description

A kind of mechanically-sealing apparatus being able to bear strong corrosion

Technical field

The utility model relates to mechanically-sealing apparatus production field more particularly to a kind of mechanical seal dresses being able to bear strong corrosion It sets.

Background technique

Mechanical seal refer to by least a pair of end face perpendicular to rotation axis Fluid pressure and compensation mechanism elastic force (or Magnetic force) under the action of and the cooperation of auxiliary seal under keep be bonded and constituted with respect to sliding prevent fluid leak dress It sets.

Mechanical seal is a kind of gland seal device of rotating machinery.Since transmission shaft is applied in inside and outside equipment, in this way, axis with set There is a circumferential clearance between standby, the medium in equipment is leaked out by the gap, if pressure is lower than atmosphere in equipment Pressure, then air is to equipment internal leakage, it is therefore necessary to have the gland seal device for preventing leakage.There are many type of axle envelope, due to machine Tool sealing has many advantages, such as that leakage rate is few and the service life is long, so mechanical seal is in the most important sealing of these equipment in the world Mode.The medium of some mechanical seal structure contacts has very strong corrosivity, such as extracts the vacuum of corrosive gas or liquid Pump, existing machinery sealing structure do not have corrosion resistance mostly, therefore in use, structure can gradually corrosion failure into And influence sealing effect.

Utility model content

Utility model provides a kind of mechanically-sealing apparatus being able to bear strong corrosion, and can be avoided device and media contact position gold It is impaired to belong to corrosion, guarantees the sealing effect and service life of device.

In order to reach the purpose, utility model is adopted the following technical scheme that

A kind of mechanically-sealing apparatus being able to bear strong corrosion, including gland, connecting flange, cavity components, positioning sleeve and axle sleeve, institute It states connecting flange, the cavity components inner ring, the positioning sleeve and the axle sleeve and surrounds a seal chamber, it is characterised in that: Two sides are equipped with the first stationary ring and the second stationary ring in the seal chamber, are provided between first stationary ring and second stationary ring solid The spring base being scheduled on the positioning sleeve, the spring base both ends are equipped with the first rotating ring and second rotating ring, and described first is dynamic It is driven between ring and second rotating ring and the spring base by shift fork.

As a preference, coating one layer of tetrafluoro bushing on the gland outer surface, the bushing left end is equipped with the one or four Fluorine gasket.

As a preference, being equipped with spring in the spring base, the both ends of the spring is provided with throw-out collar, the throw-out collar and institute It states the first rotating ring and second rotating ring offsets.

As a preference, the 4th O-ring is equipped between first rotating ring, the throw-out collar and the axle sleeve, described the The 5th O-ring is equipped between two rotating rings, the throw-out collar and the positioning sleeve.

As a preference, first stationary ring includes the annular protrusion on ontology and the ontology, the convex annular It rises in the groove being located on the gland and the connecting flange, the annular protrusion two sides are equipped with the first O-ring.

As a preference, first rotating ring and second rotating ring end respectively with first stationary ring and described the Two stationary rings offset.

As a preference, the second Tetrafluoro spacer, the axle sleeve side is arranged in the axle sleeve left end and shaft shoulder cooperation position Third O-ring is set with the second O-ring, right end and positioning sleeve cooperation position are arranged at equipment cooperation.

To sum up, compared with prior art, it is the advantages of utility model: avoids device and media contact position metal is rotten Erosion is impaired, guarantees the sealing effect and service life of device.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Label in figure is as follows:

1. gland, 2. connecting flanges, 3. cavity components, 4. positioning sleeves, 5. axle sleeves, 6. first stationary rings, 7. second stationary rings, 8. First rotating ring, 9. second rotating rings, 10. spring bases, 11. tetrafluoro bushings, 12. first Tetrafluoro spacers, 13. throw-out collars, 14. second tetrafluoros Liner, 15. first O-rings, 16. second O-rings, 17. third O-rings, 18. the 4th O-rings, 19. the 5th O-rings.

Specific embodiment

Middle embodiment is described further utility model with reference to the accompanying drawing.

A kind of mechanically-sealing apparatus being able to bear strong corrosion as shown in Figure 1, including gland 1, connecting flange 2, cavity components 3, Positioning sleeve 4 and axle sleeve 5, connecting flange 2,3 inner ring of cavity components, positioning sleeve 4 and axle sleeve 5 surround a seal chamber.Seal chamber Interior two sides are equipped with the first stationary ring 6 and the second stationary ring 7, are provided with and are fixed on positioning sleeve 4 between the first stationary ring 6 and the second stationary ring 7 Spring base 10,10 both ends of spring base are equipped with the first rotating ring 8 and the second rotating ring 9, the first rotating ring 8 and the second rotating ring 9 and spring base It is driven between 10 by shift fork.One layer of tetrafluoro bushing 11 is coated on 1 outer surface of gland, bushing left end is equipped with the first Tetrafluoro spacer 12.Tetrafluoro bushing 11 and the first stationary ring 6,15 close-fitting of the first O-ring, avoid device and the metal erosion of media contact position by Damage, guarantees the sealing effect and service life of device.Tetrafluoro bushing 11 and the first O-ring 15 and the first Tetrafluoro spacer 12 cooperate, The offset of tetrafluoro bushing 11 is avoided, ensure that sealing corrosion effect.

Spring is equipped in spring base 10, both ends of the spring is provided with throw-out collar 13, throw-out collar 13 and the first rotating ring 8 and the second rotating ring 9 It offsets.The 4th O-ring 18 is equipped between first rotating ring 8, throw-out collar 13 and axle sleeve 5, between the second rotating ring 9, throw-out collar 13 and positioning sleeve 4 Equipped with the 5th O-ring 19.First stationary ring 6 includes the annular protrusion on ontology and ontology, annular protrusion be located at gland 1 with connect In groove on flange 2, annular protrusion two sides are equipped with the first O-ring 15.First rotating ring 8 and 9 end of the second rotating ring are respectively with One stationary ring 6 offsets with the second stationary ring 7.

The second tetrafluoro liner 14 is arranged in 5 left end of axle sleeve and shaft shoulder cooperation position, setting the at 5 side of axle sleeve and equipment cooperation Third O-ring 17 is arranged in two O-rings 16, right end and 4 cooperation position of positioning sleeve, is further ensured that device and media contact position Anticorrosion ability.

Described above is only the explanation to utility model, so that those of ordinary skill in the art's can completely implements we Case, but be not the limitation to utility model, those skilled in the art are can according to need after reading this specification to this Embodiment makes the modification of not creative contribution, these are all without creative modification, but as long as in utility model All by the protection of Patent Law in scope of the claims.

Claims (7)

1. a kind of mechanically-sealing apparatus being able to bear strong corrosion, including gland (1), connecting flange (2), cavity components (3), positioning sleeve (4) and axle sleeve (5), the connecting flange (2), the cavity components (3) inner ring, the positioning sleeve (4) and the axle sleeve (5) Surrounding a seal chamber, it is characterised in that: two sides are equipped with the first stationary ring (6) and the second stationary ring (7) in the seal chamber, and described the The spring base (10) being fixed on the positioning sleeve (4), the bullet are provided between one stationary ring (6) and second stationary ring (7) Spring abutment (10) both ends are equipped with the first rotating ring (8) and the second rotating ring (9), first rotating ring (8) and second rotating ring (9) and institute It states and is driven between spring base (10) by shift fork.

2. a kind of mechanically-sealing apparatus being able to bear strong corrosion according to claim 1, it is characterised in that: the gland (1) is outside One layer of tetrafluoro bushing (11) is coated on surface, the bushing left end is equipped with the first Tetrafluoro spacer (12).

3. a kind of mechanically-sealing apparatus being able to bear strong corrosion according to claim 1, it is characterised in that: the spring base (10) spring is equipped in, the both ends of the spring is provided with throw-out collar (13), the throw-out collar (13) and first rotating ring (8) and described Second rotating ring (9) offsets.

4. a kind of mechanically-sealing apparatus being able to bear strong corrosion according to claim 3, it is characterised in that: first rotating ring (8), the 4th O-ring (18), second rotating ring (9), the throw-out collar are equipped between the throw-out collar (13) and the axle sleeve (5) (13) the 5th O-ring (19) is equipped between the positioning sleeve (4).

5. a kind of mechanically-sealing apparatus being able to bear strong corrosion according to claim 1, it is characterised in that: first stationary ring It (6) include annular protrusion on ontology and the ontology, the annular protrusion is located at the gland (1) and the connecting flange (2) in the groove on, the annular protrusion two sides are equipped with the first O-ring (15).

6. a kind of mechanically-sealing apparatus being able to bear strong corrosion according to claim 1, it is characterised in that: first rotating ring (8) it offsets respectively with first stationary ring (6) and second stationary ring (7) with the second rotating ring (9) end.

7. a kind of mechanically-sealing apparatus being able to bear strong corrosion according to claim 1, it is characterised in that: the axle sleeve (5) is left The second tetrafluoro liner (14) is arranged with shaft shoulder cooperation position in end, and the second O-ring is arranged at axle sleeve (5) side and equipment cooperation (16), right end and positioning sleeve (4) cooperation position setting third O-ring (17).