CN219827443U - Long-life spindle for mechanical seal - Google Patents

Abstract

The utility model discloses a main shaft for long-life mechanical seal, which aims to solve the problems that the existing main shaft is simple in structure, can receive great friction resistance in the rotation process of the main shaft in the use process, generates noise and can reduce the service life of the main shaft; the novel heat dissipation device comprises a main shaft body, wherein the outer side wall of the main shaft body is a smooth surface, the upper end and the lower end of the main shaft body are both provided with ends, the ends are provided with heat dissipation holes, the centers of the ends are provided with heat dissipation channels and heat dissipation cavities, the main shaft body is provided with the heat dissipation channels, the heat dissipation channels are positioned at the centers of the main shaft body and extend along the length direction of the main shaft body, the upper ends and the lower ends of the heat dissipation channels are communicated with the heat dissipation holes, the inner side walls of the heat dissipation channels are provided with connecting holes, and the heat dissipation channels are communicated with the heat dissipation cavities through the connecting holes. The outer side wall of the main shaft body is provided with the smooth surface, the smooth surface can reduce the friction resistance of the surface when the main shaft rotates, the generated noise is reduced, and the service life of the main shaft is prolonged.

Description

Long-life spindle for mechanical seal

Technical Field

The utility model relates to the field of mechanical sealing, in particular to a spindle for long-service-life mechanical sealing.

Background

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 keeps fit and relatively slide under the action of fluid pressure and the elasticity (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. The mechanical seal is a shaft seal device of a rotary machine. Such as centrifugal pumps, centrifuges, kettles, compressors and the like. Since the drive shaft extends through the device and is thus located inside and outside the device, there is a circumferential gap between the shaft and the device through which the medium in the device leaks outwards, and if the pressure in the device is below atmospheric pressure, air leaks into the device, so that a shaft seal means for preventing leakage is necessary. The variety of shaft seals is many, and mechanical seals are the most important shaft sealing modes in the world because of the advantages of small leakage amount, long service life and the like; the mechanical seal ring (moving ring) is an axially running component.

In the prior art, the application number is: the Chinese patent work piece of CN202222749707.5 discloses a novel mechanical seal structure, and it sets up at the equipment terminal surface, and mechanical seal structure includes pivoted main shaft, follows main shaft pivoted machine seal ring, does not follow main shaft rotation and set up the machine seal quiet ring at the equipment terminal surface, and machine seal ring and machine seal quiet ring constitute a pair of friction pair and form the terminal surface seal, and the main shaft passes the equipment terminal surface, is equipped with elastic sealing spare between main shaft and the equipment terminal surface.

According to the above, the existing main shaft is simple in structure, and can be subjected to great friction resistance in the process of rotating in the use process, so that noise is generated, and meanwhile, the service life of the main shaft is greatly reduced. Therefore, there is a need for an improvement in such a structure to overcome the above-mentioned drawbacks.

Disclosure of Invention

The utility model aims to provide a spindle for long-life mechanical seal, which is used for solving the problems that the existing spindle is simple in structure, can receive great friction resistance in the process of rotating the spindle in the use process, and can greatly reduce the service life of the spindle while generating noise.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a long-life is main shaft for mechanical seal, its includes the main shaft body, and wherein the lateral wall of main shaft body is smooth surface, the upper end and the lower extreme of main shaft body all are equipped with the end, it has the louvre to open on the end, the centre position of end is located and extends along the length direction of end to the louvre, it has heat dissipation passageway and heat dissipation cavity to open on the main shaft body, the heat dissipation passageway is located the centre position of main shaft body and extends along the length direction of main shaft body, heat dissipation passageway's upper end and lower extreme and louvre intercommunication, it has the connecting hole to open on heat dissipation passageway's the inside wall, heat dissipation passageway passes through connecting hole and heat dissipation cavity intercommunication.

The utility model is further provided with: the surface roughness of the smooth surface on the main shaft body is RA0.1.

The utility model is further provided with: the diameter of the end head is smaller than that of the main shaft body, the end head and the main shaft body are integrally formed, a chamfer inclined plane is formed in the edge of the top of the end head, and concave surfaces are arranged on two sides of the end head.

The utility model is further provided with: the inside of main shaft body is opened there is a plurality of fixed slots, and a plurality of fixed slots are cyclic annular distribution around the main shaft body, the fixed slot extends along the length direction of main shaft body, be equipped with the reinforcement in the fixed slot.

The utility model is further provided with: the main shaft body and the end are members made of pressureless sintered silicon carbide, and are formed by high-temperature sintering.

The utility model is further provided with: the number of the radiating cavities is two, and the radiating cavities are respectively positioned at the left side and the right side of the radiating channel.

Compared with the prior art, the utility model has the following beneficial effects:

1. the outer side wall of the main shaft body is provided with a smooth surface, the surface roughness of the smooth surface is RA0.1, the smooth surface can reduce the friction resistance of the surface when the main shaft rotates, reduce the generated noise and prolong the service life of the main shaft;

2. the end of the main shaft body is provided with a heat dissipation channel and a heat dissipation cavity, the upper end and the lower end of the heat dissipation channel are communicated with the heat dissipation hole, the inner side wall of the heat dissipation channel is provided with a connecting hole, the heat dissipation channel is communicated with the heat dissipation cavity through the connecting hole, a large amount of heat can be accumulated in the main shaft body in the working process, and the heat enters the heat dissipation channel from the heat dissipation cavity and is discharged through the heat dissipation hole, so that the temperature of the main shaft body is reduced, and normal work is ensured.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a side view of the present utility model.

Fig. 3 is a transverse cross-sectional view of the present utility model.

Fig. 4 is a longitudinal cross-sectional view of the present utility model.

Number labels: spindle body 1, end head 2, heat dissipation hole 3, heat dissipation channel 4, heat dissipation cavity 5, connecting hole 6, reinforcement 7

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 4, the spindle for long-life mechanical seal provided by the utility model comprises a spindle body 1, wherein the outer side wall of the spindle body 1 is a smooth surface, the surface roughness of the smooth surface is ensured to be RA0.1 by grinding by a grinding wheel in the processing process, and the smooth surface can reduce the friction resistance of the surface when the spindle rotates, reduce the generated noise and extend the service life of the spindle; the upper end and the lower extreme of main shaft body 1 all are equipped with end 2, wherein open on the end 2 has louvre 3, louvre 3 is located the central point of end 2 and extends along the length direction of end 2, open on the main shaft body 1 has heat dissipation passageway 4 and heat dissipation cavity 5, heat dissipation passageway 4 is located the central point of main shaft body 1 and extends along the length direction of main shaft body 1, upper end and the lower extreme of heat dissipation passageway 4 communicate with louvre 3, open on the inside wall of heat dissipation passageway 4 has connecting hole 6, heat dissipation passageway 4 communicates with heat dissipation cavity 5 through connecting hole 6, the quantity of heat dissipation cavity 5 is two, be located the left and right sides of heat dissipation passageway 4 respectively, can produce a large amount of heat and gather in main shaft body 1 in the course of working, heat gets into heat dissipation passageway 4 from heat dissipation cavity 5, and then discharges through louvre 3, thereby reduce the temperature of main shaft body 1, guarantee normal work.

Wherein the diameter of the end head 2 is smaller than that of the main shaft body 1, the end head 2 and the main shaft body 1 are integrally formed, the top edge of the end head 2 is provided with a chamfer inclined plane, and the two sides of the end head 2 are provided with concave surfaces.

The inside of main shaft body 1 is opened there is a plurality of fixed slots, and a plurality of fixed slots are cyclic annular distribution around main shaft body 1, and the fixed slot extends along the length direction of main shaft body 1, is equipped with reinforcement 7 in the fixed slot for improve the structural strength of main shaft body 1. The main shaft body 1 and the end head 2 are components made of pressureless sintered silicon carbide, and the components are sintered and formed at high temperature, can resist strong acid and strong alkali, are eaten in different industrial and mining environments, and have good service life.

The application process and principle of the utility model are as follows: the outer side wall of the main shaft body 1 is provided with a smooth surface, the smooth surface can reduce friction resistance of the surface when the main shaft rotates, noise generated is reduced, the service life of the main shaft is prolonged, a heat dissipation structure is arranged, a large amount of heat generated by the main shaft in the working process can enter the heat dissipation channel 4 from the heat dissipation cavity 5, and then is discharged through the heat dissipation holes 3, so that the temperature of the main shaft body 1 is reduced, and normal work is ensured.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", "left", "right", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in place when the inventive product is used, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements is included, and may include other elements not expressly listed.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a long-life is main shaft for mechanical seal, its includes the main shaft body, its characterized in that, wherein the lateral wall of main shaft body is smooth surface, the upper end and the lower extreme of main shaft body all are equipped with the end, it has the louvre to open on the end, the centre position of end and extend along the length direction of end is located to the louvre, it has heat dissipation passageway and heat dissipation cavity to open on the main shaft body, the heat dissipation passageway is located the centre position of main shaft body and extends along the length direction of main shaft body, heat dissipation passageway's upper end and lower extreme and louvre intercommunication, it has the connecting hole to open on the inside wall of heat dissipation passageway, heat dissipation passageway passes through connecting hole and heat dissipation cavity intercommunication.

2. The spindle for long life mechanical seal of claim 1, wherein the smooth surface on said spindle body has a surface roughness RA0.1.

3. The spindle for long life mechanical seal of claim 1, wherein the diameter of said tip is smaller than the diameter of the spindle body, said tip is integrally formed with the spindle body, the top edge of said tip is provided with a chamfer bevel, and both sides of said tip are provided with concave surfaces.

4. The spindle for long-life mechanical seal according to claim 1, wherein a plurality of fixing grooves are formed in the spindle body, the plurality of fixing grooves are distributed annularly around the spindle body, the fixing grooves extend along the length direction of the spindle body, and reinforcing members are arranged in the fixing grooves.

5. The spindle for long life mechanical seal of claim 1, wherein said spindle body and said tip are both members made of pressureless sintered silicon carbide, which is formed by high temperature sintering.

6. The spindle for long-life mechanical seal of claim 1, wherein the number of said heat dissipating cavities is two, and said heat dissipating cavities are located on the left and right sides of the heat dissipating channel, respectively.