CN212801449U

CN212801449U - Sealing device for moving shaft

Info

Publication number: CN212801449U
Application number: CN202020847785.7U
Authority: CN
Inventors: 陈家振
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-03-26
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a moving shaft sealing device, which is provided with a base, wherein a moving shaft passes through the base, and the base is used for supporting the moving shaft; the movable shaft sealing device is arranged outside the movable shaft and used for sealing between the movable shaft and the base, at least one part of the movable shaft is arranged outside a fluid space, a sealing medium side and a non-sealing medium side are formed on two sides of the sealing device, the sealing device is filled with sealing materials wrapping the movable shaft, the sealing materials can be replaced, and one end, close to the sealing medium side, of the sealing materials is provided with an annular water collecting groove; still include hydrophobic pipeline, hydrophobic pipeline's one end and annular catch basin are connected, and during motion shaft seal device normally used, hydrophobic pipeline's the other end sets up and blocks up the device, during the replacement sealing material, takes out block up the device, hydrophobic pipeline gets rid of leaking in the annular ponding ditch inslot, convenient maintenance and replacement sealing material, extension sealing device's life.

Description

Sealing device for moving shaft

Technical Field

The utility model relates to a sealing device, in particular to motion axle sealing device.

Background

In the prior art, a driving shaft of a gate, a driving shaft of a ship, and an output shaft of a driving pump valve switch all need to work in a medium (such as liquid) for a long time, such driving shaft is generally called a moving shaft, and the moving mode of the moving shaft includes a rotating motion and a reciprocating motion, which can be respectively called as a rotating motion shaft and a reciprocating motion shaft, and the moving shaft is used for driving the gate to open and close or driving the rotating shaft and a propeller exposed in water to propel by a ship host machine, so that the moving shaft has a near water end (or called as a "sealing medium side") and a far water end (or called as a "non-sealing medium side"), the non-sealing medium side is a fluid-free working environment, and the sealing medium side is exposed in a fluid, for example, the near water end is exposed. The sealing medium side and the non-sealing medium side need to be isolated in a leakage-proof way.

Taking a gate as an example, in the prior art, there is a steel dam gate, which mainly comprises a bottom shaft, wherein the bottom shaft is installed on a plurality of hinged supports fixedly arranged at the bottom of a river channel, two ends of the bottom shaft penetrate through wall bodies 6 at two sides of the river channel and extend into a hoist chamber, a hoist is arranged in the hoist chamber, two ends of the bottom shaft are connected with the hoist through a crank arm, and a gate blade for blocking water is welded on the bottom shaft. When the hoist works, the bottom shaft can be driven to rotate by the crank arm, so that the door leaf stands to block water or is laid down to discharge water. In order to avoid water in a river channel from leaking into the headstock gear chamber, a sealing device is required to be used for sealing between the bottom shaft and the wall body, the sealing filler is required to ensure that the rotary motion of the bottom shaft is not influenced by the sealing filler and can realize sealing in a rotary state, and meanwhile, the price and the cost are also considered, so the sealing filler in the sealing device is usually soft materials such as rubber sealing filler and the like, but the service life of the materials is limited, the sealing filler is reduced along with the increase of the service time of a steel dam, the sealing device starts to leak water, the water penetrates through the wall from the two ends of the shaft to enter the headstock gear chamber, and the normal work of a driving mechanism is influenced or even accidents occur.

The existing sealing device is complex in structure, the technical problem that how to replace an aged sealing material in an underwater state is not solved, once the steel dam gate is put into use, the bottom shaft is located at the bottom of a river for a long time, when the sealing material outside the bottom shaft is replaced, the underwater environment is inconvenient to operate, water is pumped out and is impractical, when the sealing material is replaced, because the water pressure in the river is higher than that in an opening and closing machine chamber, the sealing device can flow into the opening and closing machine chamber once a large amount of water is removed, and the replacement difficulty is increased.

The utility model provides a simple structure is nevertheless respond well motion axle sealing device, and the convenient change of the usual gland packing in the motion axle sealing device, for the equipment (like the boats and ships rotation axis) or the engineering (like the steel dam rotation axis) that need use the motion axle provide fine solution.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sealing device for a moving shaft, sealing materials in the sealing device can be replaced.

The purpose of the utility model can be realized through the following technical scheme:

a moving shaft sealing device has a base through which a moving shaft passes, the base supporting the moving shaft; the movable shaft sealing device is arranged outside the movable shaft and used for sealing between the movable shaft and the base, at least one part of the movable shaft is arranged outside a fluid space, a sealing medium side and a non-sealing medium side are formed on two sides of the sealing device, the sealing device is filled with sealing materials wrapping the movable shaft, the sealing materials can be replaced, an annular water collecting groove is formed in one end, close to the sealing medium side, of the sealing materials, and the annular water collecting groove is used for collecting water permeating into a river channel and providing a maintenance and replacement environment for replacing the sealing materials.

Furthermore, the device also comprises a drainage pipeline, one end of the drainage pipeline is connected with the annular water collecting groove, the other end of the drainage pipeline is provided with a pluggable plugging device, when sealing materials are replaced, the plugging device is taken out, the drainage pipeline discharges water in the annular water collecting groove and can be discharged into a river channel, and after maintenance or replacement is completed, the plugging device is plugged to prevent external water or other objects from entering the drainage pipeline.

Further, the drain pipe is a rectangular drain pipe.

Furthermore, the sealing device also comprises a locking sleeve, and the sealing material is fixed and pressed by the locking sleeve.

Further, still include the asbestos cover, the asbestos cover is installed at the sealing material periphery, the asbestos cover with the installation space of bottom shaft formation sealing material, asbestos cover reinforcing sealing device's leakproofness.

Further, the moving shaft is a rotating moving shaft or a reciprocating moving shaft.

Furthermore, the sealing material is one or more of a 0-type sealing ring, a lip-shaped sealing ring, a square sealing ring, water-swelling rubber, a V-shaped combined sealing ring or a packing.

The utility model discloses following beneficial effect has:

(1) before the sealing material is replaced, the plugging device in the drainage pipeline is taken out, water in the annular water collection groove is discharged through the drainage pipeline, the water permeating into the river channel is intercepted, a dry maintenance environment is provided for replacement of the sealing material, and the maintenance difficulty is reduced.

(2) The utility model discloses can be applied to the steel dam gate, still can ensure the indoor water-proof effects of headstock gear during the maintenance, during the replacement sealing material, the river course internal water will be drawn forth through the drain pipe, and the indoor mechanism of protection headstock gear that can be good has guaranteed the safety and the replacement efficiency of headstock gear room.

(3) When the sealing device is normally used, the lower end of the drain pipeline is blocked by the blocking device, so that external water or other objects are prevented from entering the annular water collecting groove.

(4) The utility model discloses can be applied to the sealed of the multiple liquid that uses the motion axle scene, like food, industrial chemicals's sealed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a view A-A of FIG. 1;

fig. 3 is a partially enlarged view of a portion I of fig. 2;

fig. 4 is a view from direction B of fig. 1.

Reference numerals:

a moving shaft 1, a sealing material 2, an annular water collecting groove 3, a drain pipeline 4, a plugging device 5, a wall body 6, a locking sleeve 7 and an asbestos sleeve 8

Detailed Description

In the description of the present invention, it is to be understood that the terms "close to", "far from", "sealing medium side", "non-sealing medium side", "one side", 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "connected," "sleeved," "provided," "mounted," "wrapped," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral body; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other or the two structures can be in an interaction relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The technical solution of the present invention is further described below with reference to the accompanying drawings:

a first embodiment of the present invention, as shown in fig. 1 to 4, is a moving shaft sealing device having a base (not shown in the drawings) through which a moving shaft 1 passes, the moving shaft 1 being a rotational moving shaft, the base supporting the moving shaft 1; the moving shaft sealing device is arranged outside the moving shaft 1 and used for sealing between the moving shaft 1 and the base, at least one part of the moving shaft 1 is arranged outside the fluid space, a sealing medium side and a non-sealing medium side are formed on two sides of the sealing device, the sealing device is filled with a sealing material 2 wrapping the moving shaft, the sealing material 2 can be replaced, one end of the sealing material, which is close to the sealing medium side, is provided with an annular water collecting groove 3, the annular water collecting groove 3 is connected with a drain pipe 4, the drain pipe 4 can be a rectangular drain pipe, when the moving shaft sealing device is normally used, the other end of the drainage pipeline 4 is provided with a pluggable plugging device 5, when the sealing material 2 is replaced, taking out the plugging device 5, draining the inflowing water through a drainage pipeline, and intercepting the water to continuously flow to the non-sealing medium side so as to provide a dry operating environment for replacement or maintenance of the sealing material 2; further, the sealing device also comprises a locking sleeve 7 and an asbestos sleeve 8, wherein the asbestos sleeve is arranged on the periphery of the sealing material, the asbestos sleeve and the bottom shaft form an installation space of the sealing material, and the sealing material 2 is fixed and pressed tightly by the locking sleeve 7; furthermore, the sealing material is one or more of a 0-type sealing ring, a lip-shaped sealing ring, a square sealing ring, water-swelling rubber, a V-shaped combined sealing ring or a packing.

The technical effects of the above embodiment can be popularized to the water prevention of the joint of the driving shaft and the propeller of the ship and any water-involved engineering that the non-sealing medium side of the moving shaft needs water prevention, the service life of the sealing mechanism is prolonged, and the replacement and maintenance of the sealing material are convenient.

Above only the utility model discloses an preferred embodiment, the utility model discloses a scope of protection not only limits in the embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and alterations can be made without departing from the principles of the present invention.

Claims

1. A moving shaft sealing device has a base through which a moving shaft passes, the base supporting the moving shaft; the movable shaft sealing device is arranged outside the movable shaft and used for sealing between the movable shaft and the base, and is characterized in that at least one part of the movable shaft is arranged outside a fluid space, a sealing medium side and a non-sealing medium side are formed on two sides of the sealing device, the sealing device is filled with sealing materials wrapping the movable shaft, the sealing materials can be replaced, and one end, close to the sealing medium side, of the sealing materials is provided with an annular water collecting groove.

2. A moving shaft seal as claimed in claim 1 further comprising a hydrophobic conduit having one end connected to the annular water collection channel and the other end provided with a plug means.

3. The moving shaft seal as claimed in claim 2 wherein said hydrophobic conduit is a rectangular hydrophobic conduit.

4. A moving shaft seal as claimed in claim 1 further including a locking sleeve, said seal being secured and compressed by said locking sleeve.

5. A moving shaft seal as claimed in claim 1 further including an asbestos cuff mounted around the periphery of the seal material.

6. The moving shaft sealing device according to any one of claims 1 to 5, wherein the moving shaft is a rotating moving shaft or a reciprocating moving shaft.

7. The moving shaft sealing apparatus according to any one of claims 1 to 5, wherein said sealing material is one or more of a type 0 seal, a lip seal, a square seal, water-swellable rubber, a V-shaped combination seal, or a packing.