CN209278487U

CN209278487U - A kind of mechanical seal cover resistant to high temperature

Info

Publication number: CN209278487U
Application number: CN201821769091.5U
Authority: CN
Inventors: 韩啸天
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2019-08-20
Anticipated expiration: 2028-10-30

Abstract

The utility model discloses a kind of mechanical seal covers resistant to high temperature, including lid, casing is fixedly connected at the top of lid, and inner sidewall of the casing close to top offers internal screw thread, the bearing of opening upwards is fixedly installed at the top of lid in casing, and fixing sleeve is connected to tapered seal receptacle on bearing, by by pressure cap plug in casing after the external screw thread of pressure cap is contacted with the internal screw thread that casing opens up, rotation pressure cap is threadably secured pressure cap with casing to connect, the tapered seal receptacle being fixedly attached in the chamfering and bearing that the bottom of pressure cap opens up at this time forms sealing surface, improve the sealing performance of mechanical seal cover, simultaneously as tapered seal receptacle is cone seal, the hidden danger of seal failure caused by eliminating in structure type because of vibration, also ensure the long-term effect of sealing effect and sealing, and the lower surface of lid be fixedly installed with it is several A equally distributed radiating fin, improves the heat dissipation performance of mechanical seal cover, improves the heat-resisting quantity of mechanical seal cover.

Description

A kind of mechanical seal cover resistant to high temperature

Technical field

The utility model relates to a kind of sealing element, specifically a kind of mechanical seal cover resistant to high temperature.

Background technique

The leakage problem of large-scale mixing plant or conveying equipment is always that the industry devices manufacturer such as chemical industry, pharmacy is most closed The problem of note.When for pump conveying water or other liquid, lead to leakage problem, many producer's oiling Feng Yizeng due to poorly sealed The leakproofness of oil (gas) filling device, but the axle sleeve of being honored as a queen of refueling is easy to just be destroyed, and causes the machine envelope service life extremely short, does not also have currently on the market Suitable product is to protect, therefore liquid goes out to flow everywhere in equipment operation, destroys other equipment.

For the leakage problem for solving conveying equipment, 106321838 A of Chinese utility model patent specification CN discloses one Kind be used for mechanical seal gland, the main part have a through-hole axially communicated, through-hole include first through hole, the second through-hole with And third through-hole, stage portion is formed between first through hole and the second through-hole, gland is formed by stage portion and is sealed, is sealed Performance is poor, when encountering equipment and shaking, is easy to cause the hidden danger for causing seal failure, so that sealing effect and sealing timeliness Property is lower, while this application not can be shown that whether the gland of mechanical seal at high temperature will receive influence.

Utility model content

In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to provide one kind to not easily lead to Cause the hidden danger of seal failure and high temperature resistant at the same can effectively prevent the phenomenon that the lubricating oil of addition flows back one Kind mechanical seal cover resistant to high temperature.

To achieve the above object, the utility model provides the following technical solutions:

A kind of mechanical seal cover resistant to high temperature, including lid are fixedly connected with casing at the top of the lid, and casing leans on The inner sidewall at nearly top offers internal screw thread, and the bearing of opening upwards, and axis are fixedly installed at the top of the lid in described sleeve pipe Hold fixing sleeve and be connected to tapered seal receptacle, offer pouring orifice on the lid, pouring orifice be sequentially communicated column type chamber, oil duct, Spherical cavity, and pouring orifice, column type chamber, oil duct and spherical cavity are coaxially disposed, the side of spherical cavity is connected by oil expulsion channel and bearing hole Logical, column type is intracavitary to be equipped with anti-backflow device；Pressure cap is inserted in described sleeve pipe, lateral wall of the pressure cap close to top offers outer spiral shell Line is simultaneously threadedly coupled with the internal screw thread that casing opens up, and the bottom of pressure cap offers the chamfering being mutually matched with tapered seal receptacle.

As a further solution of the present invention: the anti-backflow device is made of fixed plate, spring and steel ball, it is described Fixed plate is fixedly mounted on oil duct and offers several equally distributed through-holes, institute close to one end of column type chamber, and in fixed plate State fixed plate and connect with steel ball by spring, one end of spring is fixedly connected with the lower surface of fixed plate, the other end of spring and Steel ball is fixedly connected, steel ball be in the junction of pouring orifice and column type chamber and with pouring orifice inner sidewall CONTACT WITH FRICTION.

As a further solution of the present invention: being equipped with ring segment between described sleeve pipe and pressure cap.

As a further solution of the present invention: to be fixedly installed with several equally distributed for the lower surface of the lid Radiating fin.

As a further solution of the present invention: the pouring orifice is identical as the diameter of steel ball, and pouring orifice and steel ball Diameter it is smaller than the diameter of column type chamber.

Compared with prior art, the utility model has the beneficial effects that

1, the utility model by by pressure cap plug in casing until internal screw thread that the external screw thread of pressure cap and casing open up After contact, rotation pressure cap is threadably secured pressure cap with casing to connect, the chamfering and bearing that the bottom of pressure cap opens up at this time On the tapered seal receptacle that is fixedly attached form sealing surface, the sealing performance of mechanical seal cover is improved, simultaneously as tapered sealing Seat is cone seal, and the hidden danger of seal failure, also ensures sealing effect and sealing caused by eliminating in structure type because of vibration Long-term effect.

2, the utility model is injected lubricating oil by syringe from pouring orifice, and the injection head of syringe will push steel ball Intracavitary to column type, spring-compressed is flowed into bearing convenient for lubricating oil, and lubricating oil enters in bearing along runner, to reduce Frictional force between bearing and axis, so that the service performance of bearing is improved, after oiling, in the effect of spring, so that steel Pearl resets and seals pouring orifice, so that lubricating oil be avoided to flow back, while reducing dust and flying into pouring orifice, leads to occur it The phenomenon that his runner blocking.

3, the lower surface of lid is fixedly installed with several equally distributed radiating fins in the utility model, improves machine The heat dissipation performance of tool sealing cover improves the heat-resisting quantity of mechanical seal cover.

Detailed description of the invention

Fig. 1 is a kind of schematic cross-sectional view of mechanical seal cover resistant to high temperature.

Fig. 2 is the enlarged structure schematic diagram in a kind of mechanical seal cover resistant to high temperature at A.

Fig. 3 is a kind of overlooking structure diagram of mechanical seal Gaizhonggai body resistant to high temperature.

In figure: lid 1, casing 2, bearing 3, tapered seal receptacle 4, radiating fin 5, pressure cap 6, ring segment 7, pouring orifice 8, column Type chamber 9, oil duct 10, spherical cavity 11, oil expulsion channel 12, fixed plate 13, through-hole 14, spring 15, steel ball 16.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, in the utility model embodiment, a kind of mechanical seal cover resistant to high temperature, including lid 1, lid 1 Top be fixedly connected with casing 2, and inner sidewall of the casing 2 close to top offers internal screw thread, 1 top of lid in casing 2 It is fixedly installed with the bearing 3 of opening upwards, and fixing sleeve is connected to tapered seal receptacle 4 on bearing 3, and is inserted with pressure cap in casing 2 6, lateral wall of the pressure cap 6 close to top offers external screw thread and the internal screw thread opened up with casing 2 is threadedly coupled, the bottom of pressure cap 6 The chamfering being mutually matched with tapered seal receptacle 4 is offered, ring segment 7 is installed between casing 2 and pressure cap 6.

Before use, by pressure cap 6 is plugged in casing 2 until internal screw thread that the external screw thread of pressure cap 6 and casing 2 open up After contact, rotation pressure cap 6 is threadably secured pressure cap 6 with casing 2 to connect, the chamfering that the bottom of pressure cap 6 opens up at this time and The tapered seal receptacle 4 being fixedly attached on bearing 3 forms sealing surface, improves the sealing performance of mechanical seal cover, simultaneously as cone Type seal receptacle 4 is cone seal, and the hidden danger of seal failure, also ensures sealing effect caused by eliminating in structure type because of vibration With the long-term effect of sealing.

Referring to Fig. 2, offering pouring orifice 8 on lid 1, pouring orifice 8 has been sequentially communicated column type chamber 9, oil duct 10, spherical cavity 11, and pouring orifice 8, column type chamber 9, oil duct 10 and spherical cavity 11 are coaxially disposed, the side of spherical cavity 11 passes through oil expulsion channel 12 and axis The connection of 3 holes is held, is equipped with anti-backflow device in column type chamber 9, anti-backflow device is made of fixed plate 13, spring 15 and steel ball 16, Gu Fixed board 13 is fixedly mounted on oil duct 10, and that several are offered close to one end of column type chamber 9, and in fixed plate 13 is equally distributed logical Hole 14, fixed plate 13 are connect by spring 15 with steel ball 16, and one end of spring 15 is fixedly connected with the lower surface of fixed plate 13, bullet The other end of spring 15 is fixedly connected with steel ball 16, steel ball 16 be in the junction of pouring orifice 8 and column type chamber 9 and in pouring orifice 8 Sidewall friction contact, pouring orifice 8 is identical as the diameter of steel ball 16, and pouring orifice 8 and the diameter of steel ball 16 are more straight than column type chamber 9 Diameter is small.

When in use, mechanical seal cover is mounted on mechanical equipment, is infused lubricating oil from pouring orifice 8 by syringe Entering, the injection head of syringe will push in steel ball 16 to column type chamber 9, and spring 15 compresses, it is flowed into bearing 3 convenient for lubricating oil, Lubricating oil enters in bearing 3 along runner, so that the frictional force between bearing 3 and axis is reduced, to improve the use of bearing 3 Performance after oiling, extracts syringe out, in the effect of spring 15, so that steel ball 16 resets and seals pouring orifice 8, thus It avoids lubricating oil from flowing back, while reducing dust and flying into pouring orifice 8, lead to the phenomenon that other runner blockings occur.

Referring to Fig. 3, the lower surface of lid 1 is fixedly installed with several equally distributed radiating fins 5, machinery is improved The heat dissipation performance of sealing cover improves the heat-resisting quantity of mechanical seal cover.

Lid 1, casing 2 and pressure cap 6 are all made of iron-based high-temperature alloy material in this programme, further improve mechanical close The high temperature resistance of capping, while bearing 3 is made of high-carbon chromium steel, tapered seal receptacle 4 is made of gray cast iron material, due to The damping energy characteristic of gray cast iron material is preferable, and effectively vibration can be absorbed and make its decrease, so that disappearing in structure type In addition to the hidden danger because of seal failure caused by vibration.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims

1. a kind of mechanical seal cover resistant to high temperature, including lid (1), which is characterized in that be fixedly connected at the top of the lid (1) Have casing (2), and inner sidewall of the casing (2) close to top offers internal screw thread, it is solid at the top of the lid (1) in described sleeve pipe (2) Dingan County is equipped with the bearing (3) of opening upwards, and fixing sleeve is connected to tapered seal receptacle (4) on bearing (3), is opened on the lid (1) Equipped with pouring orifice (8), pouring orifice (8) has been sequentially communicated column type chamber (9), oil duct (10), spherical cavity (11), and pouring orifice (8), column Type chamber (9), oil duct (10) and spherical cavity (11) are coaxially disposed, and the side of spherical cavity (11) passes through oil expulsion channel (12) and bearing (3) Hole connection, column type chamber (9) is interior to be equipped with anti-backflow device；It is inserted with pressure cap (6) in described sleeve pipe (2), pressure cap (6) is close to top Lateral wall offers external screw thread and the internal screw thread opened up with casing (2) is threadedly coupled, the bottom of pressure cap (6) offer with it is tapered close The chamfering that envelope seat (4) is mutually matched.

2. a kind of mechanical seal cover resistant to high temperature according to claim 1, which is characterized in that the anti-backflow device is by solid Fixed board (13), spring (15) and steel ball (16) composition, the fixed plate (13) are fixedly mounted on oil duct (10) close to column type chamber (9) One end, and several equally distributed through-holes (14) are offered in fixed plate (13), the fixed plate (13) passes through spring (15) connect with steel ball (16), one end of spring (15) is fixedly connected with the lower surface of fixed plate (13), spring (15) it is another End is fixedly connected with steel ball (16), and steel ball (16) is in the junction of pouring orifice (8) and column type chamber (9) and interior with pouring orifice (8) Sidewall friction contact.

3. a kind of mechanical seal cover resistant to high temperature according to claim 1, which is characterized in that described sleeve pipe (2) and pressure cap (6) ring segment (7) are installed between.

4. a kind of mechanical seal cover resistant to high temperature according to claim 1, which is characterized in that the following table of the lid (1) Face is fixedly installed with several equally distributed radiating fins (5).

5. a kind of mechanical seal cover resistant to high temperature according to claim 1, which is characterized in that the pouring orifice (8) and steel The diameter of pearl (16) is identical, and diameter of the diameter of pouring orifice (8) and steel ball (16) than column type chamber (9) is small.