CN211059356U

CN211059356U - Mechanical sealing element with strong corrosion resistance

Info

Publication number: CN211059356U
Application number: CN201921914761.2U
Authority: CN
Inventors: 于松磊; 王继国
Original assignee: Kunshan Shangzeqi Chemical Technology Co ltd
Current assignee: Kunshan Shangzeqi Chemical Technology Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-07-21
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses a mechanical seal spare of strong corrosivity resistance, which comprises a main shaft, the outside upper portion of main shaft is provided with presss from both sides tight ring subassembly, the lower extreme that presss from both sides tight ring subassembly is provided with the axle sleeve, the lower extreme that goes up the axle sleeve is provided with down the axle sleeve, the outside end of going up the axle sleeve is provided with the locating piece, the lower extreme of locating piece is provided with quiet ring, the outer end of going up quiet ring is provided with sealed box, the lower extreme of going up quiet ring is provided with movable ring group, sealed box be provided with evenly distributed's bolt all around, sealed box's intermediate position is provided with drive screw. Divide into two sections through setting up whole axle sleeve through inlaying the mode of assisting the sealing washer in addition, set up the axle sleeve of lower extreme into the sic material to solve the integral axle sleeve of traditional stainless steel and not corrosion resistance's problem, make the axle sleeve can be applied to the operating mode under the strong corrosivity condition, increase the adaptability of sealing washer under different operating modes.

Description

Mechanical sealing element with strong corrosion resistance

Technical Field

The utility model relates to a mechanical seal technical field specifically is a mechanical seal of strong corrosion resistance.

Background

The mechanical sealing part belongs to one of precise mechanical basic elements with complex structures and is a key part of equipment such as various pumps, reaction synthesis kettles, turbine compressors, submersible motors and the like. Its sealing performance and service life depend on many factors such as the type of selection, the accuracy of the machine, proper installation and use, etc.

Traditional mechanical seal's flange is the whole material of stainless steel usually, long-time the use down, the corrosion resistance of stainless steel is poor, the life of flange is low, influence mechanical seal's use, traditional mechanical seal's axle sleeve is the whole material of stainless steel usually, and stainless steel's axle sleeve is because of long-time and pivot contact, because of wearing and tearing corrode, be difficult to adapt to the operating mode under the strong corrosivity condition, when traditional mechanical seal was used for under the strong corrosivity operating mode, can corrode the flange because of strong corrosivity material, so collection device can't set up the blowhole.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical seal spare of resistant strong corrosivity to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a mechanical seal spare of high corrosion resistance, includes the main shaft, the outside upper portion of main shaft is provided with the clamping ring subassembly, the lower extreme of clamping ring subassembly is provided with the axle sleeve, the lower extreme of going up the axle sleeve is provided with down the axle sleeve, the outside end of going up the axle sleeve is provided with the locating piece, the lower extreme of locating piece is provided with quiet ring, the outer end of going up quiet ring is provided with seal box, the lower extreme of going up quiet ring is provided with movable ring group, seal box is provided with evenly distributed's bolt all around, seal box's intermediate position is provided with drive screw, seal box's lower extreme only has the small flange, the lower extreme of small flange is provided with big flange, the inside of small flange is provided with down quiet ring, the upper end of big flange is provided with the collecting vat, the lower.

Preferably, a spring is arranged inside the movable ring group, and a spring fixing sleeve is arranged outside the spring.

Preferably, the lower shaft sleeve is made of sic.

Preferably, the material of the large flange is F4.

Preferably, the sewage draining outlet transversely penetrates through the large flange.

Preferably, the outer surfaces of the movable ring group, the upper static ring and the lower static ring are subjected to smoothing treatment.

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

1. the utility model has simple structure, the integral shaft sleeve is divided into two sections by embedding and adding the auxiliary sealing ring, and the shaft sleeve at the lower end is set to be sic material, thereby solving the problem that the integral shaft sleeve of the traditional stainless steel is not corrosion resistant, leading the shaft sleeve to be applicable to the working condition under the condition of strong corrosivity and increasing the adaptability of the sealing ring under different working conditions;

2. the utility model discloses setting up holistic stainless steel flange on with traditional mechanical seal spare, being divided into the small flange of upper end and the big flange of lower extreme, playing the effect of support through the lower flange of upper end, setting up the big flange of lower extreme into F4 material (polytetrafluoroethylene), F4 material has the characteristics of antiacid alkali-resistant, anti various organic solvent, is hardly soluble in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristic of high temperature resistance, and the friction coefficient of the polytetrafluoroethylene is extremely low, so that the polytetrafluoroethylene can play a role in lubrication. The large flange made of F4 has very excellent corrosion resistance, and only F4 material contacts with the material in actual use, so that the problem that a drain outlet cannot be additionally arranged on the traditional mechanical sealing element under a strong corrosive working condition is solved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. the device comprises a main shaft, 2, a clamping ring assembly, 3, an upper shaft sleeve, 4, a lower shaft sleeve, 5, a positioning block, 6, an upper static ring, 7, a sealing box body, 8, bolts, 9, a small flange, 10, a large flange, 11, a lower static ring, 12, a transmission screw, 13, a collecting tank, 14, a sewage discharge outlet, 15 and a movable ring group.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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, the present invention provides an embodiment: a mechanical sealing element with strong corrosion resistance comprises a main shaft 1, a clamping ring component 2 is arranged on the upper portion of the outer side of the main shaft 1, an upper shaft sleeve 3 is arranged at the lower end of the clamping ring component 2, a lower shaft sleeve 4 is arranged at the lower end of the upper shaft sleeve 3, the lower shaft sleeve 4 is made of sic, the integral shaft sleeve is divided into an upper shaft sleeve 3 and a lower shaft sleeve 4 by embedding and adding an auxiliary sealing ring, the lower shaft sleeve 4 at the lower end is made of sic, and the sic has the characteristics of corrosion resistance, high temperature resistance, high strength, good heat conductivity, impact resistance and the like, so that the problem that the traditional stainless steel integral shaft sleeve is not corrosion-resistant is solved, the shaft sleeve can be applied to working conditions under the strong corrosion condition, the adaptability of the sealing ring under different working conditions is improved, a positioning block 5 is arranged at the outer end of the upper shaft sleeve 3, the integral, the outer end of the upper stationary ring 6 is provided with a sealing box body 7, the lower end of the upper stationary ring 6 is provided with a movable ring group 15, the inner part of the movable ring group 15 is provided with a spring, the outer part of the spring is provided with a spring fixing sleeve, enough elasticity is kept through the spring to overcome the friction of an auxiliary seal and a transmission part and the inertia of the movable ring and the like, the good attachment of each end face seal and the following performance of the movable ring group 15 are ensured, the periphery of the sealing box body 7 is provided with evenly distributed bolts 8, the middle position of the sealing box body 7 is provided with a transmission screw 12, the lower end of the sealing box body 7 is only provided with a small flange 9, the lower end of the small flange 9 is provided with a large flange 10, the large flange 10 is made of F4, the inner part of the small flange 9 is provided with a lower stationary ring 11, the end faces of the movable ring group 15, the upper stationary ring 6 and the lower stationary ring 11 are subjected, the sewage outlet 14 transversely penetrates through the large flange 10, the stainless steel flange which integrates the traditional mechanical sealing element is divided into a small flange at the upper end and a large flange at the lower end, the lower flange at the upper end plays a supporting role, the large flange at the lower end is made of polytetrafluoroethylene F4, and the F4 material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance and is hardly dissolved in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristic of high temperature resistance, and the friction coefficient of the polytetrafluoroethylene is extremely low, so that the polytetrafluoroethylene can play a role in lubrication. The large flange made of the F4 material has very excellent corrosion resistance, and only the F4 material is in contact with the material in actual use, so that the problem that the sewage draining outlet 14 cannot be additionally arranged under the strong corrosion working condition of the traditional mechanical sealing element is solved.

The working principle is as follows: when the utility model is used, the utility model needs to be understood simply, when in installation, the sealing surfaces between the upper static ring 6, the lower static ring 11 and the movable ring group 15 are tightly adhered to prevent the leakage of sealing medium, the end surfaces of the movable ring group 15, the upper static ring 6 and the lower static ring 11 are smoothened to ensure that the sealing pair has good adhesion, the integral shaft sleeve is divided into an upper shaft sleeve 3 and a lower shaft sleeve 4 by embedding and assisting the sealing ring, the lower shaft sleeve 4 at the lower end is made of sic material, the sic has the characteristics of corrosion resistance, high temperature resistance, high strength, good heat conductivity, shock resistance and the like, thereby solving the problem that the integral shaft sleeve of the traditional stainless steel has no corrosion resistance, the shaft sleeve can be applied to the working condition under the strong corrosive condition, the adaptability of the sealing ring under different working conditions is increased, the spring is arranged in the spring fixing sleeve, keep enough elasticity through the spring and overcome the inertia of friction and rotating ring etc. of supplementary seal and driving medium, guarantee the good laminating of each end face seal and the following nature of rotating ring group 15, aim at the position of collecting vat 13 in the side of big flange 10 and offer drain 14, set up big flange into F4 material poly (tetrafluoroethylene), the big flange of F4 material has very outstanding corrosion resisting property, only there is the F4 material with the material contact in the in-service use, thereby avoided traditional mechanical seal can't add the problem of establishing drain 14 under strong corrosive operating mode.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. 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. A mechanical seal resistant to strong corrosion, comprising a main shaft (1), characterized in that: the upper part of the outer side of the main shaft (1) is provided with a clamping ring assembly (2), the lower end of the clamping ring assembly (2) is provided with an upper shaft sleeve (3), the lower end of the upper shaft sleeve (3) is provided with a lower shaft sleeve (4), the upper end of the outer part of the upper shaft sleeve (3) is provided with a positioning block (5), the lower end of the positioning block (5) is provided with an upper static ring (6), the outer end of the upper static ring (6) is provided with a sealing box body (7), the lower end of the upper static ring (6) is provided with a movable ring group (15), the periphery of the sealing box body (7) is provided with uniformly distributed bolts (8), the middle position of the sealing box body (7) is provided with a transmission screw (12), the lower end of the sealing box body (7) is only provided with a small flange (9), the lower end of the small flange (9) is provided with a large flange, the upper end of the large flange (10) is provided with a collecting tank (13), and the lower end of the collecting tank (13) is provided with a sewage draining outlet (14).

2. A strong corrosion resistant mechanical seal according to claim 1, wherein: the inside of the movable ring group (15) is provided with a spring, and the outside of the spring is provided with a spring fixing sleeve.

3. A strong corrosion resistant mechanical seal according to claim 1, wherein: the lower shaft sleeve (4) is made of sic.

4. A strong corrosion resistant mechanical seal according to claim 1, wherein: the large flange (10) is made of F4.

5. A strong corrosion resistant mechanical seal according to claim 1, wherein: the sewage draining outlet (14) transversely penetrates through the large flange (10).

6. A strong corrosion resistant mechanical seal according to claim 1, wherein: the outer surfaces of the movable ring group (15), the upper static ring (6) and the lower static ring (11) are subjected to smoothing treatment.