KR20190057935A - apparatus for sealing shaft - Google Patents

Abstract

The present invention relates to a rotary shaft sealing apparatus, and more specifically, to a rotary shaft sealing apparatus which is formed on an outer circumference of a rotary shaft so as to block water from being introduced thereinto. In particular, this invention is configured by comprising: a housing (100) coupled to one side of a vessel (container); a rotary shaft (200) penetrating into the housing; and a sealing (300) formed between the rotary shaft and the housing.

Description

[0001] Apparatus for sealing shaft [0001]

The present invention relates to a rotary shaft sealing apparatus, and is a rotary shaft sealing apparatus which is formed on an outer peripheral surface of a rotary shaft and can block the inflow of water.

Patent Invention 001 relates to a vacuum valve for blocking, opening or controlling the flow of the medium flowing through the inside 3 of the vacuum valve 1. As the shaft 6 connected to the valve drive 5 is guided through the valve housing 2 to the interior 3 from the atmosphere region 4 in an airtight manner by the enclosed shaft penetration 20, (4) to the interior (3) to block, open or regulate the flow. The shaft penetration (20) includes a first sealing ring (21) for concentrically wrapping the shaft (6) concentrically in a gas-tight manner in a radial direction, an axially opposed support surface (22) for the shaft The first sealing ring 1 is at least partly adjacent to the support surface in a gas-tight manner, and includes a support ring 23 and a spring 25. [ The inner conical piece (24) of the support ring (23) at least partly encloses the first sealing ring (21). The spring 25 urges the support ring 23 axially in the direction toward the support surface 22 so that the conical piece 24 is pressed against the support surface 22 and the shaft 6 at a substantially constant pressure And the first sealing ring 21 is elastically pressed and sealed in a conformable manner.

Patent Document 002 discloses a waterproofing device for a ship output shaft that protrudes outboard through a through hole formed in a partition of a hull and a through hole, wherein the ship output shaft is mounted at a predetermined position on the outer side of the output shaft, A fixing member mounted in a space between the through hole and the outer circumferential surface of the output shaft to seal the space and fix the bearing device, and to prevent leakage between the bearing device and the fixing member mounted on the inner side of the fixing member A waterproof ring fixed to the power shaft to prevent water leakage between the bearing devices, a retaining ring for supporting the waterproof ring, a bearing device fixed between the fixing member and the bearing device, which closely contacts the waterproof ring of the output shaft and the bearing device An elastic material, a leakage preventive member for preventing leakage between the sliding bearing device and the fixing member, a bearing device Relates to a configuration in which safety devices for detecting a cooling water system, leaking, and that overheating by cooling the sliding bearing is installed and the frictional heat of the waterproof ring mounted on the output shaft for marine waterproof device according to claim.

The patented invention 003 has a through hole 2 formed in a partition wall of a hull 1 and a through hole 2 which is connected to the engine 3 at one side to the inside of the through hole and to the engine 3 at the other side for a ship formed on a shaft 5 to which a propeller 4 is coupled. A shaft waterproofing device according to claim 1, wherein a cylindrical needle bearing (6) which is in contact with the through hole and is in contact with the shaft (5) is inserted into the through hole (2), and a bellows A sliding pad 8 having an injection port 8a for injecting cooling water into the other end of the bellows 7 is formed and both ends of the bellows are forcibly fastened with a fastening band 9, And a sliding bearing (10) is fixedly fastened to the shaft (8) by bolts (11) on the shaft so as to be in contact with the shaft (8).

A propeller shaft (10) is supported by a bearing means in a stern tube or stern frame (120), the stern tube or stern frame (120) being connected to the propeller shaft And a culvert end having a culvert end mounting surface to which a sealing assembly 118 for sealing the shaft 10 is fastened, the cultering assembly 118 having a mounting surface facing the stern tube or stern frame 120 , Wherein the sealing assembly (118) and the stern tube or stern frame (120) have at least one leakage monitor line (142) for monitoring the condition of the sealing assembly (118) One having a circumferentially extending channel portion (162, 166), said circumferentially extending channel portion (162, 166) being connected to said at least one leakage monitor line (142) Relates to a device for sealing a ship propeller shaft, characterized in that the communication state.

KR 10-2016-0110567 A (Published on September 21, 2016) KR 10-2004-0034048 A (Published on April 28, 2004) KR 10-2006-0036353 A (Published on April 28, 2006) KR 10-1589800 B1 (Registration date January 22, 2016)

The present invention relates to a rotary shaft sealing apparatus, and is a rotary shaft sealing apparatus which is formed on an outer peripheral surface of a rotary shaft and can block the inflow of water.

The present invention relates to a rotary shaft sealing apparatus, which comprises a housing (100) coupled to a container or a hull, a rotary shaft (200) penetrating the interior of the housing, And a sealing ring 300 formed between the first and second sealing rings.

In the rotary shaft sealing apparatus of the present invention, in the above-described invention, the seal is fixed to both ends of the inner side of the housing, a rotary chamber (610) coupled to the rotary shaft, And a rotor (600).

In the rotary shaft sealing apparatus of the present invention, in the above-described invention, the rotor includes a shaft holding body 620 fixedly coupled to a rotating shaft; and an elastic body 630 coupled between the rotating chamber and the shaft holding body.

In the rotary shaft sealing apparatus of the present invention, the rotating body fixing body 800 includes a rotary chamber in which one side inserts the rotary chamber and the other side supports the elastic body.

The rotating shaft sealing device of the present invention includes the airtight body 900 formed between the shrink shaft and the rotary shrink shaft and formed in a cylindrical shape in the above-described invention.

The present invention seals the rotating shaft to block the inflow of water, and improves the sealing structure to effectively prevent inflow of water.

The rotating shaft sealing device of the present invention has an improved durability and is resistant to frequent friction with the rotating shaft. The rotary shaft sealing apparatus of the present invention has the effect of absorbing the vibration transmitted to the rotary shaft and exhibiting vibration damping performance. The rotating shaft sealing device of the present invention has an effect of preventing the water flow and preventing the breakage due to the impact that may occur in the longitudinal direction of the rotating shaft.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
2 is a perspective view of the rotary shaft sealing device of the present invention.
3 is an internal perspective view of the rotating shaft sealing device of the present invention.
4 is an internal perspective view of the housing of the present invention.
Fig. 5 is a perspective view of the shrinkage stagnation section of the present invention. Fig.
6 is a perspective view of the rotating body of the present invention.
7 is a perspective view showing a rotating body of the present invention.
8 is a cross-sectional perspective view of the rotor of the present invention.
Fig. 9 is a cross-sectional view of another embodiment
10 is a cross-sectional perspective view of an airtight body of the present invention.
11 is a cross-sectional perspective view of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Embodiment 1-1] The present invention relates to a rotary shaft sealing apparatus, which comprises a housing 100 coupled to a container or a hull, a rotating shaft 200 penetrating the inside of the housing, And a sealing (300).

In order to accomplish this, the present invention forms a seal between the rotating shaft and the housing, which supports the rotating shaft and prevents the inflow of water.

[Example 1-2] Rotating-shaft sealing apparatus of the present invention The rotating-shaft sealing apparatus according to Example 1-1 comprises an impeller or a screw formed at one end of the rotating shaft and formed of a plurality of rotating plates.

The power of the engine or the motor is transmitted by the rotating force of the rotating shaft, and the rotating force of the rotating shaft rotates the screw and the stirring impeller. The screw is spirally twisted by a plurality of plate members, and the respective rotary plates are arranged at equal intervals. The rotational force of the screw or agitating impeller generates propulsive force of water, which leads to an axial load of the vessel and stirrer.

[Example 1-2] Rotating-shaft sealing apparatus of the present invention In Example 1-1, the housing and the hull (vessel) include a housing sealed.

A gap is formed in a portion where the housing and the hull (container) contact each other. A housing seal is coupled to the clearance. The housing sealing hermetically seals the housing and the hull (container) to prevent water from entering the hull (container).

 [Example 1-3] Rotating-shaft sealing apparatus of the present invention [0156] In Example 1-1, a housing step (110) formed on one side of the housing and protruding from the housing is formed on the hull (container) And a housing coupling groove 410 to be inserted and coupled.

The thrust load is transmitted to the housing, and the thrust load is transmitted to the ship. In ships and housings, the housing and the hull (container) form steps to deliver the force by the steps to deliver with full propulsion.

[Embodiment 1-4] In the rotating shaft sealing apparatus of Embodiment 1-1 of the present invention, the outer side of the housing forms an inclined surface, and the hull (container) coupled with the housing forms an inclined groove corresponding to the inclined surface do.

The rotational force of the rotary shaft is applied to the hull (vessel), which acts on the coupling surface of the housing and the hull (vessel). The contact surface increases the contact area between the hull or the container and the housing, and the contact surface forms an inclined surface in order to fully transfer the thrust load. Therefore, the inclined surface of the housing and the inclined groove are formed at the same angle.

[Embodiment 1-5] In the rotating shaft sealing apparatus of Embodiment 1-1 of the present invention, it includes a detachment means formed in the housing and the hull (container).

Since the sealing device requires maintenance and maintenance, the housing must be detached. To this end, the housing is fastened to the hull or container using a fastening member such as a bolt. The bolt may be substituted, and an object which exhibits the same purpose and effect may be substituted and used.

[Example 2-1] Rotating-shaft sealing apparatus of the present invention [0112] In Example 1-1, the sealing is a fixing chamber 500 fixed to both ends of the inside of the housing, And a rotor 600 forming a rotation chamber 610.

The housing of the present invention is formed in an engagement relationship of the fixed chamber and the rotary chamber in order to block the inflow of water into the rotary shaft. The fixed chamber is fixedly coupled to the housing, and the rotary chamber is fixedly coupled to the rotary shaft. In order to increase the blocking effect, a fixing chamber and a rotating chamber are formed at both ends of the housing. That is, the sealing effect can be exhibited at two places.

[Example 2-2] In the rotary shaft sealing apparatus of Example 2-1 of the present invention, the contact surfaces of the fixed chamber and the rotary chamber include inclined surfaces or spherical surfaces.

The fixed chamber and the rotating chamber are closely contacted with high pressure and rotated at high speed. Therefore, it is desirable to reduce the pressure, and to enlarge the contact area for this purpose. Therefore, the contact surface is formed not in a plane but in a slope or a sphere.

[Example 2-3] In the rotary shaft sealing apparatus of Example 2-1 of the present invention, the fixed chamber and the rotary chamber are formed of any one selected from tungsten carbide, chromium molybdenum steel, and ceramic.

The fixed chamber and the rotating chamber are brought into close contact with each other at high pressure and are rotated at a high speed. Therefore, it is necessary to use a material having high heat resistance and high abrasion resistance. In order to satisfy this, it is preferable that the rotating chamber and the fixed chamber are formed of one of tungsten carbide, chromium molybdenum steel and ceramic material. Or may be replaced with an object which exhibits the same purpose and effect as the substitution.

[Example 2-4] In the rotary shaft sealing apparatus of Example 2-1 of the present invention, the fixed chamber and the rotary chamber include those formed of tungsten carbide.

As another embodiment of the fixed chamber and the rotary chamber, the fixed chamber and the rotary chamber may be formed of tungsten carbide which is much harder than the high-speed steel in heat resistance and hardness.

[Example 2-5] In the rotary shaft sealing apparatus of Example 2-1 of the present invention, a fixed chamber coupling groove for accommodating the fixed chamber was formed at one side and a fixed chamber coupling groove for coupling to the inside of the housing at the other side 700).

The fixed chamber is a consumable item because it is worn out for a long time. When the fixed chamber is coupled with the housing, it causes a problem of replacing the entire housing. In order to prevent this, a fixing chamber fastener which is coupled between the housing and the fixed chamber and fixes the fixed chamber is mounted. The fixed chamber fastener inserts and connects the fixed chamber.

[Embodiment 2-6] In Embodiment 2-5 of the rotating shaft sealing apparatus of the present invention, a fixed body removing body 710 formed between the fixed body body and the housing and formed in plural is included.

The fixed body assembly must be coupled to one side of the housing and maintain airtightness. Therefore, the outer circumferential surface of the fixed body elimination chamber forms a plurality of fixation body deletion chambers formed by a circular ring.

[Embodiment 2-7] In Embodiment 2-6 of the rotating shaft sealing device of the present invention, a coupling groove 130 is formed in the housing and accommodates one side of the fixed body assembly.

A coupling groove is formed in the housing so that the coupling of the fixed entity coupling with the housing is precisely positioned, and a coupling of the fixed body is inserted into the coupling groove.

[Embodiment 2-8] In Embodiment 2-7 of the rotating shaft sealing apparatus of the present invention, a housing cover 140 coupled to one side of the housing and forming a rotation shaft through hole 141 therein is included.

The housing cover prevents detachment of parts coupled to the inside of the housing, and the housing cover is engaged with the housing by a plurality of bolts.

 [Example 3-1] A rotary shaft sealing apparatus according to Example 2-1 of the present invention is characterized in that the rotor has a shaft fixed body 620 fixedly coupled to a rotary shaft, an elastic body 630 coupled between the rotary shaft and the shaft constant body, .

The rotary chamber must be fixed to the rotary shaft. Therefore, the rotating chamber is coupled with the shaft holding body, and the shaft holding body is fixed to the rotating shaft. Therefore, the rotating chamber is rotated in the same manner as the rotating shaft rotation.

The rotating chamber should be in close contact with the fixed chamber. For this purpose, an elastic body is formed between the rotating chamber and the shrinking stagnation. One side of the elastic body is coupled to the shaft and the other side is coupled to the rotary chamber. Therefore, the rotating chamber can be brought into close contact with the fixed chamber at a constant pressure. That is, the airtightness is secured by the adhesion force.

[Embodiment 3-2] In the rotating shaft sealing apparatus of embodiment 3-1 of the present invention, the shrink-gripping member forms a through-hole fastening member 621, and the fastening member includes a fastening member 622 which is engaged with the rotation shaft do.

A through hole is formed in the shim to connect the shim to the shim. The fastener is inserted into the through-hole so that the fastener and the rotary shaft are completely engaged with each other.

[Embodiment 3-3] In Embodiment 3-2 of the rotating shaft sealing apparatus of the present invention, the fastener inner diameter forms a female thread, and the outer diameter of the fastener forms a male thread to be engaged with the female thread.

The shrinking stagnation is formed in a ring shape so as to be fixed to the rotating shaft. A bolt, a set screw or the like may be used as the fastening means. In another embodiment, a keyway is formed in the rotary shaft and the shaft pinion, and the key can be engaged. In addition, the rotation axis and the shrinkage stagnation can be splined to each other.

[Embodiment 3-4] In Embodiment 3-2 of the rotating shaft sealing apparatus of the present invention, the fastening member is formed of a pin and includes a fastening member coupled with the fastening member.

As another embodiment of the fastening member, the fastening member can be constrained to pins for positioning, removal prevention, and movement prevention of the shrinkage stagnation.

[Example 3-5] In Example 3-2 of the rotating shaft sealing device of the present invention, a first O-ring groove (623) formed on the inner surface of the shrinkage stagnant body, a first O- 624).

[Embodiment 3-6] In Embodiment 3-5 of the rotating shaft sealing device of the present invention, the first O-ring groove and the first O-ring include a plurality of the O-rings.

[Embodiment 3-7] In Embodiment 3-6 of the rotating shaft sealing device of the present invention, the first O-ring groove and the first O-ring include those formed on both sides of the fastener.

Since the flow of the water should be blocked, the shaft and the gap should be sealed. To achieve this, a plurality of O-rings are coupled to the inner circumferential surface of the shaft and the outer circumferential surface of the rotating shaft. A first O-ring groove is formed to secure the position of the O-ring. The first O-ring groove and the first O-ring may be formed in different positions as required, and the number of the O-rings may be more than one.

[Embodiment 3-8] In Embodiment 3-1 of the rotating shaft sealing apparatus of the present invention, the elastic body includes a coil spring.

The elastic body is formed by a coil spring. The coil springs are provided at both ends of the shrinking stagnation member, and fix the respective rotating shafts. The coil spring gives an adhesive force to the rotating chamber by elastic force. The rotating shaft is inserted inside the coil spring. Two of the coil springs are coupled to both ends of the shaft, and each of the coil springs is formed of a first spring and a second spring. The first spring and the second spring have the same or different spring coefficients.

 [Embodiment 3-9] In Embodiment 3-8 of the rotating shaft sealing device of the present invention, the shrinking stagnation member includes a spring insertion groove 625 for inserting the coil spring.

[Embodiment 3-10] In the rotary shaft sealing apparatus of Embodiment 3-8 of the present invention, the shrinkage stagnation includes a spring insertion step 626 for coupling the coil spring.

The coil spring is rotated together with the rotation shaft. That is, it must be mounted in the correct position. If the correct position is not set, an eccentric load is generated periodically and causes vibration. In order to prevent this, a spring insertion groove for fixing the position of the spring is formed in the jamming body. Or a spring insertion step for supporting the inner circumferential surface of the spring.

[Examples 3-11] In Examples 3-10 of the rotary shaft sealing apparatus of the present invention, a separation preventing member 627, which is coupled with the shrinkage preventing member and has a cylindrical shape, covers one side of the coil spring.

A centrifugal force is generated by rotation of the rotating body. The coil spring of the present invention is subjected to a centrifugal force, and the outer diameter of the spring center portion can be expanded by the centrifugal force. This deteriorates the adhesion between the rotating chamber and the fixed chamber. A release preventing member is mounted to prevent the outer diameter of the center of the spring from being expanded by the centrifugal force. The separation preventing member may be combined with the shrinkage stagnation member. The release preventing member has the purpose of restricting the deformation of the coil spring. The release preventing member may be integrally formed with the shrinking pendent or may be formed as a separate structure.

 [Example 4-1] Rotating-shaft sealing apparatus of the present invention The rotary-type fixed body 800 according to the practical example 3-1, one side of which inserts the rotating chamber and the other side supports the elastic body.

Rotating chambers are consumables. Therefore, it should be replaced at regular intervals. Replacing the jaws together when replacing the rotating chamber causes a lot of losses. Thus, the rotary chamber for fixing the rotary chamber was formed. A rotating chamber is coupled to one side of the rotating body, and an elastic body is coupled to the other side.

[Embodiment 4-2] A rotary shaft sealing apparatus according to embodiment 4-1 of the present invention, the rotary shaft 810, which is coupled between the rotary body and the rotary shaft, (820).

The rotary lap joint fixed to the elastic body forms a cantilever structure. That is, it shows vulnerability to vibration. Particularly, since the intermediate side is formed of an elastic body, the rotation of the rotating body during the rotation of the shaft causes extreme vibration. In order to prevent this, a decoupling chamber is coupled between the rotating body and the rotating shaft, and the decoupling chamber keeps the rotating body and the rotating shaft at a constant interval. The breaking chamber is inserted into the breaking chamber insertion groove on the inner surface of the rotary mounting body so as not to be displaced by vibration.

[Embodiment 4-3] In Embodiment 4-2 of the rotating shaft sealing apparatus of the present invention, the breaking chamber has a hemispherical shape in cross section, a plane is closely attached to the rotating shaft, and a spherical surface is coupled to the breaking chamber insertion groove do.

In order to stably support the positions of the rotary cylinder and the rotary shaft, the compression chamber section is formed into a semicircular shape. The plane of the semicircular shape is coupled to the outer surface of the rotating shaft, and the circular side is coupled to the rotating machine body.

[Embodiment 4-4] In Embodiment 4-3 of the rotating shaft sealing apparatus of the present invention, it includes irregularities formed in the plane and formed in plural.

The deflection chamber should absorb the minute vibrations flexibly. To this end, a plurality of recesses are formed in the control chamber in contact with the outer circumferential surface of the rotary shaft, so that the vibration can be absorbed by the protrusions and the rotary shaft can be safely supported.

[Example 4-5] In the rotary shaft sealing apparatus of Example 4-2 of the present invention, the suppressing chamber includes one formed of synthetic rubber.

Conventional rubbers are formed of natural rubber and synthetic rubber, but it is preferable that the breaking chamber of the present invention is formed of synthetic rubber. Particularly, it is preferable to be formed of urethane. A material which achieves the same purpose and effect by replacing the urethane may be used as an equivalent object.

[Example 4-6] In the rotary shaft sealing apparatus of Example 4-5 of the present invention, the surface of the gynecological chamber contained chlorine coating.

When chlorine is coated on the surface of the false chamber formed of synthetic rubber, the friction performance is improved by lowering the glass transition temperature, and the adhesion can be improved.

[Embodiment 5-1]] The rotary shaft sealing apparatus according to embodiment 4-1 of the present invention includes a hermetic body 900 formed between the shrink-gripping body and the rotary body, and formed in a cylindrical shape.

The airtight body blocks entry of water entering between the rotary chamber and the rotary shaft into the housing. In addition, since the shrinkage stagnation and the rotation shrinkage stagnation are combined, the vibration stability of the rotating shrink stagnation can be ensured. The hermetic body is provided on both sides of the shrinking stagnation body, and is disposed inside the elastic body.

 [Example 5-2] In the rotary shaft sealing apparatus of Example 5-1 of the present invention, the airtight member includes one formed into a bellows shape.

Shrinkage stagnation and rotation The stagnation distance should be variable. This is because the rotating body is subjected to the urging force by the elastic body and the longitudinal deformation due to the close contact is generated. To accommodate this, the airtight body takes the form of a corrugated tube which allows longitudinal deformation.

[Example 5-3] In Example 5-1 of the rotating shaft sealing apparatus of the present invention, both ends of the airtight body form inwardly engaging projections 910, and the shrink-gripping bodies and the rotary- The engaging groove 920 is formed.

The airtight body has a purpose of transmitting torque. To this end, both ends of the airtight body form an engaging projection and are tightly engaged with the engaging groove.

 [Example 5-4] Rotary shaft sealing apparatus of the present invention In Example 5-1, the airtight member includes one formed of stainless steel.

The airtight body should be capable of preventing corrosion and preventing deformation due to impact due to vibration of the rotary shaft. Therefore, it is preferable that the gas tight body is formed of a stainless steel corrugated pipe.

100: housing 110: housing step
130: coupling groove 140: housing cover
141: Through hole 200:
300: sealing 400: hull (container)
410: Housing fastening groove 500: Fixing chamber
600: rotor 610: rotating chamber
620: shrinkage congestion 621: fastener
622: fastener 623: first o-ring groove
624: first O-ring 625: spring insertion groove
626: spring insertion step 627:
630: elastic body 700: fixed body connection
710: Fixed body removal 800:
810: The Truth Room 820: The Truth Room Insert Home
900: air tight body 910: engaging projection
920: Coupling groove

Claims (5)

In a rotary shaft sealing device,
A housing (100) coupled to a vessel or hull side;
A rotating shaft 200 penetrating the inside of the housing;
And a seal (300) formed between the rotation shaft and the housing.
The method according to claim 1,
A fixing chamber 500 fixed to both ends of the inside of the housing;
And a rotor (600) coupled to the rotating shaft and having rotating chambers (610) at both ends thereof in contact with the fixed chambers.
The method of claim 2,
The rotor is fixed to the rotary shaft 620;
And an elastic body (630) coupled between the rotating chamber and the fixed body.
The method of claim 3,
(800) having one side for inserting the rotating chamber and the other side for supporting the elastic body.
The method of claim 4,
And a hermetic body (900) coupled between the shim body and the rotary body, and formed in a cylindrical shape.

Images