CN212899702U - Mechanical sealing piece convenient to adjust - Google Patents

Abstract

The utility model discloses a mechanical sealing element convenient for adjustment, which belongs to the field of mechanical sealing and comprises a lower shell, wherein the inner part of the lower shell is provided with a pair of connecting pipes, the upper end of the lower shell is provided with an annular groove, the upper end of the annular groove is provided with an upper shell, the lower end of the upper shell is matched with the inner wall of the annular groove, the upper ends of the lower shell and the upper shell are respectively provided with a through hole, the inner wall of the through hole is matched with the outer end of the connecting pipe, the outer ends of the lower shell and the upper shell are respectively fixedly connected with a pair of connecting plates, the connecting plates at the outer end of the lower shell are respectively provided with a threaded hole, the connecting plates at the outer end of the upper shell are respectively provided with a positioning hole, a rotating rod is inserted into the inner part of the pair of positioning holes and is rotatably connected with the positioning holes, the upper end of the rotating rod is provided, the fluid is not easy to leak from the gap, and the service life is long.

Description

Mechanical sealing piece convenient to adjust

Technical Field

The utility model relates to a mechanical seal field, more specifically say, relate to a mechanical seal convenient to adjust.

Background

The development source of sealing in China is long, and ancient people used cotton, hemp and other fibers as sealing elements of water lifting machinery, but used fillers only in 1782 abroad. The importance of sealing is not to be said, but now foreign countries have developed a subject for researching sealing rules, sealing device design techniques and applied scientific principles, namely 'sealingscience', scientific research institutes also have professional courses for specially researching sealingscience, and in China, to date, there are courses for fluid mechanics, hydraulic transmission and the like in universities according to our knowledge, but there is no 'sealing system' for specially researching sealing, so that the research level of our country is still different from foreign countries.

The mechanical seal (mechanical seal) is a device for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in contact and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the matching of an auxiliary seal.

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. Mechanical seals, also called face seals, are defined in the relevant national standards as follows: "means for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal.

At present, after the traditional sealing element is used for a long time, the pipeline is easy to fall off, fluid is easy to leak from a gap, and the service life is short.

Disclosure of Invention

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a mechanical seal convenient to adjust, it can realize that the sealing member is difficult for droing to the pipeline after long-time the use, and the fluid is difficult for leaking long service life from the clearance.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A mechanical sealing element convenient to adjust comprises a lower shell, wherein a pair of connecting pipes are arranged inside the lower shell, an annular groove is formed in the upper end of the lower shell, an upper shell is arranged at the upper end of the annular groove, the lower end of the upper shell is matched with the inner wall of the annular groove, through holes are formed in the upper ends of the lower shell and the upper shell, the inner wall of each through hole is matched with the outer end of the corresponding connecting pipe, a pair of connecting plates are fixedly connected to the outer ends of the lower shell and the upper shell, threaded holes are formed in the connecting plates at the outer ends of the lower shell, positioning holes are formed in the connecting plates at the outer ends of the upper shell, rotating rods are inserted into the positioning holes and are rotatably connected with the positioning holes, threads are formed in the upper ends of the rotating rods, the upper ends of the rotating rods are in threaded connection with the threaded holes, one sections of the rotating rods, far away from the threaded holes, fixedly, the equal fixedly connected with spacing ring in extension spring's both ends, it is a pair of the spacing ring is located the one end that locating hole and handle are close to each other respectively, and is a pair of the equal grooving of digging of one end that the spacing ring was kept away from each other, the inside roll connection of grooving has the ball, and it can realize that the sealing member is difficult for droing after long-time the use to the pipeline, and the fluid is difficult for leaking from the clearance, long service life.

Furthermore, it is a pair of the equal fixedly connected with rubber pad of outer end of connecting pipe, the rubber pad is laminated mutually with the inner wall of through-hole, and the equal fixedly connected with sealing washer of one section that a pair of connecting pipe is close to each other, the leakproofness between an effectual improvement a pair of connecting pipe.

Furthermore, the outer end of the handle is fixedly connected with a rubber sleeve, so that the friction force between the palm and the handle is increased.

Further, overlook of inferior valve and epitheca is circular shape, and inferior valve and epitheca are stainless steel, can be effectual even fixed to the pipeline, and stainless steel can prevent inferior valve and epitheca corruption, improves life.

Furthermore, it is a pair of the equal fixedly connected with stopper in upper end of bull stick prevents that the bull stick from rotating in the screw hole and droing.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) the scheme can realize that the sealing element is not easy to fall off after the pipeline is used for a long time, and the fluid is not easy to leak from the gap and has long service life.

(2) The outer ends of the pair of connecting pipes are fixedly connected with rubber pads, the rubber pads are attached to the inner wall of the through hole, one section of the pair of connecting pipes, which is close to each other, is fixedly connected with a sealing ring, and the sealing performance between the pair of connecting pipes is effectively improved.

(3) The outer end of the handle is fixedly connected with a rubber sleeve, so that the friction force between the palm and the handle is increased.

(4) The overlooking of inferior valve and epitheca is circular shape, and inferior valve and epitheca are stainless steel, can be effectual even fixed to the pipeline, and stainless steel can prevent inferior valve and epitheca corruption, improves life.

(5) The equal fixedly connected with stopper in the upper end of a pair of bull stick prevents that the bull stick from rotating in the screw hole and drops.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic view of the three-dimensional structure of the housing of the present invention.

The reference numbers in the figures illustrate:

the device comprises a lower shell 1, an upper shell 2, a connecting pipe 3, a connecting plate 4, a rotating rod 5, an extension spring 6, a handle 7, a sealing ring 8, a rubber pad 9, a limiting ring 10, balls 11, through holes 12, an annular groove 13 and a limiting block 14.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", 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 referred to 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", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, 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.

Example 1:

referring to fig. 1-3, a mechanical sealing member convenient for adjustment includes a lower casing 1, a pair of connecting pipes 3 are provided inside the lower casing 1, an annular groove 13 is drilled at the upper end of the lower casing 1, the inner wall of the annular groove 13 is drilled with a radian to facilitate better fitting of the upper casing 1 and the annular groove 13, an upper casing 2 is provided at the upper end of the annular groove 13, the lower end of the upper casing 2 is matched with the inner wall of the annular groove 13, through holes 12 are drilled at the upper ends of the lower casing 1 and the upper casing 2, the inner walls of the through holes 12 are matched with the outer ends of the connecting pipes 3, a pair of connecting plates 4 are fixedly connected to the outer ends of the lower casing 1 and the upper casing 2, threaded holes are drilled in the connecting plates 4 at the outer end of the lower casing 1, positioning holes are drilled in the connecting plates 4 at the outer end of the upper casing 2, a rotating rod 5 is inserted inside the pair of the positioning holes, the rotating rod 5, the upper end and the screw hole threaded connection of bull stick 5, one section fixedly connected with handle 7 of screw hole is kept away from to bull stick 5, the upper end fixedly connected with extension spring 6 of bull stick 5, the equal fixedly connected with spacing ring 10 in extension spring 6's both ends, a pair of spacing ring 10 is located the one end that locating hole and handle 7 are close to each other respectively, the one end that a pair of spacing ring 10 was kept away from each other all cuts the slot rolling, the inside roll connection of slot rolling has ball 11.

Referring to fig. 1, the outer ends of the pair of connecting pipes 3 are fixedly connected with rubber pads 9, the rubber pads 9 buffer the connecting pipes 2 and 3, the rubber pads 9 are attached to the inner wall of the through hole 12, and the sections of the pair of connecting pipes 3 close to each other are fixedly connected with sealing rings 8, so that the sealing performance between the pair of connecting pipes 3 is effectively improved, the outer ends of the handles 7 are fixedly connected with rubber sleeves, and the friction force between the palm and the handles 7 is increased.

Referring to fig. 1-3, the lower casing 1 and the upper casing 2 are circular when viewed from above, the lower casing 1 and the upper casing 2 are made of stainless steel, so that the pipelines can be effectively and uniformly fixed, the corrosion of the lower casing 1 and the upper casing 2 can be prevented by the stainless steel, the service life is prolonged, and the upper ends of the pair of rotating rods 5 are fixedly connected with the limiting blocks 14, so that the rotating rods 5 are prevented from rotating and falling off in the threaded holes.

When related workers use the sealing element, the lower end of the upper shell 2 is placed in the annular groove 13, the outer side of the upper shell 2 is attached to the inner wall of the annular groove 13, the connecting pipes 3 are stably pressed by the lower shell 1 and the upper shell 2, the pair of connecting pipes 3 are tightly connected, the joint is sealed by the sealing ring 8 between the pair of connecting pipes 3, when the pair of connecting pipes 3 are softened or aged, the lower shell 1 and the upper shell 2 are squeezed by the extension spring 6, the sealing performance is effectively improved, the handle 7 is grabbed and rotated, the labor consumption is reduced by rolling the balls at the outer end of the limiting ring 10, the distance between the lower shell 1 and the upper shell 2 is conveniently adjusted manually, the sealing performance is improved better, the fluid leakage is prevented, the sealing element can be used for a pipeline for a long time and is not easy to fall off, and the fluid is not easy to leak from a gap, the service life is long.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (5)

1. The utility model provides a mechanical seal convenient to adjust, includes inferior valve (1), the inside of inferior valve (1) is equipped with a pair of connecting pipe (3), its characterized in that: the upper end of the lower shell (1) is provided with an annular groove (13), the upper end of the annular groove (13) is provided with an upper shell (2), the lower end of the upper shell (2) is matched with the inner wall of the annular groove (13), the upper ends of the lower shell (1) and the upper shell (2) are provided with through holes (12), the inner wall of each through hole (12) is matched with the outer end of a connecting pipe (3), the outer ends of the lower shell (1) and the upper shell (2) are fixedly connected with a pair of connecting plates (4), the connecting plates (4) at the outer ends of the lower shell (1) are provided with threaded holes, the connecting plates (4) at the outer ends of the upper shell (2) are provided with positioning holes, a pair of rotating rods (5) are inserted into the positioning holes, the rotating rods (5) are rotatably connected with the positioning holes, the upper ends of the rotating rods (5) are provided with threads, and the upper ends of the rotating rods (5) are in, one section fixedly connected with handle (7) of screw hole is kept away from in bull stick (5), the upper end fixedly connected with extension spring (6) of bull stick (5), the equal fixedly connected with spacing ring (10) in both ends of extension spring (6), it is a pair of spacing ring (10) are located the one end that locating hole and handle (7) are close to each other respectively, and are a pair of the one end that spacing ring (10) kept away from each other is all dug and is had the slot rolling, the inside roll connection of slot rolling has ball (11).

2. A mechanical seal to facilitate adjustment according to claim 1, wherein: the outer ends of the connecting pipes (3) are fixedly connected with rubber pads (9), the rubber pads (9) are attached to the inner wall of the through hole (12), and one section of each connecting pipe (3) close to each other is fixedly connected with a sealing ring (8).

3. A mechanical seal to facilitate adjustment according to claim 1, wherein: the outer end of the handle (7) is fixedly connected with a rubber sleeve.

4. A mechanical seal to facilitate adjustment according to claim 1, wherein: the overlooking of the lower shell (1) and the upper shell (2) is circular, and the lower shell (1) and the upper shell (2) are both made of stainless steel materials.

5. A mechanical seal to facilitate adjustment according to claim 1, wherein: the upper ends of the rotating rods (5) are fixedly connected with limit blocks (14).

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