CN208793626U - Rotary shaft liquid seal device - Google Patents

Abstract

A kind of rotary shaft liquid seal device comprising shell, rotary shaft, surrounding wall, revolving bed, annular groove unit, separates ring wall and barrier liquid.The shell includes shell basal wall.The surrounding wall extends from the shell basal wall towards the interior of shell, and interval surrounds the rotary shaft.The revolving bed includes rotation basal wall and filled layer.The affixed rotation basal wall of the annular groove unit, and fluid-tight space is defined, and two opposite sides of the rotation basal wall are separately positioned on the filled layer.The separation ring wall extends into the fluid-tight space.When the revolving bed and the annular groove unit rotate, the gas which hinders the neighbouring filled layer is connected with the gas of the neighbouring rotary shaft.The utility model rotary shaft liquid seal device can using the barrier liquid reach it is airtight blockade, can prevent aqueous vapor penetrate into generate leakage, and can avoid the oxygen outside the shell entrance.

Description

Rotary shaft liquid seal device

Technical field

The utility model relates to a kind of rotary shaft liquid seal devices, include snugly affixed rotation basal wall more particularly to one kind Annular groove unit, and with the rotary shaft, the annular groove unit interval be arranged surrounding wall, separate ring wall rotary shaft fluid-tight fill It sets.

Background technique

The existing device [such as rotating packed-bed reactor, axial-flow pump (axial flow pump)] for using rotary shaft Carry out it is airtight blockade, mechanical shaft seal (mechanical shaft seal) [such as card box axle envelope (cartridge is usually used Seal mode)], but its be reached using mechanical organs such as oil sealing, spring or blades it is airtight blockade, not only to contact stream The operating conditions such as body type, environment temperature, peripheral speed are limited to, and sealing element can also be produced with using the time that can gradually wear away Raw gap, and then cause mechanical organ to be penetrated into gap by aqueous vapor and generate corrosion, increase friction when bearing rotation, thus need It eliminates and changes to avoid leakage.On the other hand, if the gas in device contains imflammable gas (such as carbon monoxide or hydrogen), once dress It sets outer air (oxygen) infiltration gap and enters the interior danger for contacting with imflammable gas, also thering is generation to explode of device.In addition, adopting It generally requires to supply the more additional energy with the mode of mechanical shaft seal to overcome friction caused by mechanical shaft seal, it is also desirable to Cooling system is so that mechanical shaft seal device smooth operation.If can not then be generated enough and not by the way of mechanical shaft seal Airtight effect.

Utility model content

The purpose of this utility model is to provide a kind of rotary shaft liquid seal devices, can overcome lacking for above-mentioned background technique Point.

The rotary shaft liquid seal device of the utility model includes shell, rotary shaft, surrounding wall, revolving bed, annular groove unit, separates Ring wall and barrier liquid.The shell includes shell basal wall.The rotary shaft is arranged in the shell basal wall.The surrounding wall is from the shell basal wall Extend towards the interior of shell, interval surrounds the rotary shaft.The revolving bed is set in the shell, the rotation including connecting the rotary shaft Turn basal wall and filled layer.The annular groove unit snugly affixed rotation basal wall, and match with the rotation basal wall with boundary therebetween Fluid-tight space is made, and the annular groove unit and the filled layer are two opposite sides for being separately positioned on the rotation basal wall.The stripper loop Wall extends into the fluid-tight space from the surrounding wall and is spaced around the rotary shaft, so that the fluid-tight space, which has, is located at this Separate first area and the second area of ring wall two sides.The barrier liquid is filled in the fluid-tight space.Wherein, when the rotary shaft is outer Portion's driving and when rotating so that the revolving bed and the annular groove unit are rotated relative to the shell, the barrier liquid by centrifugation power drive and It is distributed in the first area and the second area simultaneously, and blockades the gas of the neighbouring filled layer and the gas of the neighbouring rotary shaft It is connected.

The utility model has the beneficial effects that: the utility model rotary shaft liquid seal device passes through the annular groove unit and the ring It is arranged around the interval of wall, the separation ring wall, the barrier liquid is enable to synchronize the gas for blockading the neighbouring filled layer and the neighbouring rotation The gas of axis is connected, and can prevent the aqueous vapor of the neighbouring filled layer from penetrating into the oil sealing and generate leakage.On the other hand, if the shell The gas of the interior neighbouring filled layer contains imflammable gas, and the utility model rotary shaft liquid seal device can be hindered using the barrier fluid-tight Air (oxygen) outside the shell enters, and avoids generating the danger exploded.

It will be described in detail below with regard to the content of the present invention:

Preferably, which includes the first ring wall, and snugly the affixed rotation basal wall, outer towards this from the rotation basal wall Shell basal wall extends and is spaced around the surrounding wall.

It is highly preferred that the annular groove unit further includes the second ring wall, snugly affixed first ring wall, from the first ring wall court The surrounding wall extends and is spaced around the surrounding wall.

It is highly preferred that first ring wall be from the rotation basal wall the rotary shaft axis up towards the shell basal wall extend.

It is highly preferred that second ring wall be from first ring wall this radially of the axis of rotation on towards the surrounding wall extend.

Again it is highly preferred that the annular groove unit further includes third ring wall, snugly affixed second ring wall, from second ring wall Extend in the axis of the rotary shaft up towards the separation ring wall and is spaced around the surrounding wall.

Preferably, the separation ring wall be from the surrounding wall this radially of the axis of rotation on towards the annular groove unit the first ring wall It extends into the fluid-tight space and is spaced around the rotary shaft.

Preferably, which also includes conduit, extends to the fluid-tight space from the shell exterior, with supply The barrier liquid in the fluid-tight space.

Detailed description of the invention

Other features and effect of the utility model will be clearly presented in the embodiment referring to attached drawing, in which:

Fig. 1 is the partial schematic sectional view of the first embodiment of the utility model rotary shaft liquid seal device；And

Fig. 2 is the partial schematic sectional view of the second embodiment of the utility model rotary shaft liquid seal device.

Specific embodiment

Before the utility model is described in detail, it shall be noted that in the following description content, similar element is with phase With number indicate.

The utility model will be described further with regard to following embodiment, however, it should be noted that the embodiment only for Show and illustrate to use, and is not necessarily to be construed as the limitation of the utility model implementation.

< embodiment >

Refering to fig. 1, the first embodiment of the utility model rotary shaft liquid seal device 1 includes shell 2, rotary shaft 3, surrounding wall 22, revolving bed 4, annular groove unit 5, separation ring wall 6, barrier liquid 7 and conduit 8.

The shell 2 includes shell basal wall 21.In the present embodiment, which is the bottom wall of the shell 2.

The rotary shaft 3 is arranged in the shell basal wall 21.In the present embodiment, which is to be set to this by oil sealing 9 Shell basal wall 21.

For the surrounding wall 22 from the shell basal wall 21 towards 2 internal stretch of shell, interval surrounds the rotary shaft 3.

The revolving bed 4 is set in the shell 2, rotation basal wall 41 and filled layer 42 including connecting the rotary shaft 3.At this In embodiment, which is the lower wall of the revolving bed 4.

The annular groove unit 5 snugly affixed rotation basal wall 41, and match with the rotation basal wall 41 to define therebetween Fluid-tight space 50 out, and the annular groove unit 5 and the filled layer 42 are two opposite sides for being separately positioned on the rotation basal wall 41.The ring Slot unit 5 includes the first ring wall 51, the second ring wall 52 and third ring wall 53.First ring wall 51 snugly affixed rotation basal wall 41, extend from the rotation basal wall 41 in the axis of the rotary shaft 3 up towards the shell basal wall 21 and is spaced around the surrounding wall 22.It should Second ring wall 52 snugly affixed first ring wall 51, from first ring wall 51 in the rotary shaft 3 axially towards the surrounding wall 22 extend and are spaced around the surrounding wall 22.The third ring wall 53 snugly affixed second ring wall 52, from second ring wall 52 Extend in the axis of the rotary shaft 3 up towards the separation ring wall 6 and is spaced around the surrounding wall 22.In the present embodiment, the annular groove The fluid-tight space 50 that unit 5 is matched with the rotation basal wall 41 and defined generally is in annulus column.

The separation ring wall 6 in radially extending entrance fluid-tight space 50 of the rotary shaft 3 and is spaced from the surrounding wall 22 Around the rotary shaft 3, so that the fluid-tight space 50 has the first area 501 and second for being located at 6 two sides of separation ring wall Region 502.In the present embodiment, which is located at the upside of the separation ring wall 6, which is located at this point The downside of spacer ring wall 6.

The barrier liquid 7 is filled in the fluid-tight space 50.The barrier liquid 7 can be but be not limited to water, vegetable and animals oils, mineral oil, The stabilization liquid of the low-vapor pressures such as synthetic oil (synthetic oil) (such as synthetic ester, silicone oil, perfluoropolyether etc.), machine oil.

The conduit 8 extends to the fluid-tight space 50 outside the shell 2, for should the barrier liquid in fluid-tight space 50 7。

It rotates when the rotary shaft 3 is driven externally so that the revolving bed 4 and the annular groove unit 5 are revolved relative to the shell 2 When turning, which is distributed in the first area 501 and the second area 502 by centrifugation power drive simultaneously, and blockades neighbouring The gas of the filled layer 42 is connected with the gas of the neighbouring rotary shaft 3 and the oil sealing 9, to avoid the neighbouring filled layer 42 containing big The gas of amount water mist touches the oil sealing 9.On the other hand, if in the shell 2 gas of the neighbouring filled layer 42 contain it is flammable Property gas (such as carbon monoxide or hydrogen), the barrier liquid 7 can blockade the air (oxygen) outside the shell 2 enter and imflammable gas Contact, and avoid generating the danger exploded.

Referring to Fig.2, the second embodiment of the utility model rotary shaft liquid seal device 1 is similar with the first embodiment, it is poor Different to be in in this second embodiment, which is the roof of the shell 2, which is the revolving bed 4 Upper wall, which is located at the downside of the separation ring wall 6, which is located at the upside of the separation ring wall 6, And the annular groove unit 5 does not include third ring wall.

In conclusion the utility model rotary shaft liquid seal device 1 passes through the annular groove unit 5 snugly affixed rotation basal wall 41 and the surrounding wall 22, the separation ring wall 6 and the rotary shaft 3, the annular groove unit 5 interval be arranged, when the annular groove unit 5 revolves When turning, which can synchronize the gas phase of the gas and the neighbouring rotary shaft 3 and the oil sealing 9 of blockading the neighbouring filled layer 42 Connection can avoid the neighbouring filled layer 42 containing the gas of a large amount of water mists and touch the oil sealing 9, aqueous vapor is effectively prevent to penetrate into the oil sealing 9 gap generates leakage.On the other hand, if the gas of the neighbouring filled layer 42 contains imflammable gas (such as one in the shell 2 Carbonoxide or hydrogen), the utility model rotary shaft liquid seal device 1 can blockade the air (oxygen outside the shell 2 using the barrier liquid 7 Gas) enter the danger for contacting with imflammable gas, and avoiding generating explosion.It can be seen that the utility model rotary shaft liquid seal device 1 has and good airtight blockades effect.In addition, the utility model rotary shaft liquid seal device 1 is without the mechanical member such as spring or blade Required consumptive material and the energy can be greatly decreased without other driving devices in part, and can be suitably used for the operating condition of various peripheral speeds, So the purpose of this utility model can be reached really.

The above, only the embodiments of the present invention, when the model that cannot limit the utility model implementation with this It encloses, i.e., it is all according to simple equivalent changes and modifications made by the utility model claims book and description, all still belong to this The range of utility model.

Claims (8)

1. a kind of rotary shaft liquid seal device, it is characterised in that it includes:

Shell, including shell basal wall；

Rotary shaft is arranged in the shell basal wall；

The surrounding wall extended from the shell basal wall towards the interior of shell, interval surround the rotary shaft；

The revolving bed being set in the shell, rotation basal wall and filled layer including connecting the rotary shaft；

Interval is around the annular groove unit of the surrounding wall and the rotary shaft, snugly affixed rotation basal wall, and with the rotation basal wall It matches to define fluid-tight space therebetween, and the annular groove unit and the filled layer are be separately positioned on the rotation basal wall two Opposite side；

Separate ring wall, extend into the fluid-tight space from the surrounding wall and be spaced around the rotary shaft, so that the fluid-tight space has There are the first area for being located at the separation ring wall two sides and second area；And

Liquid is obstructed, the fluid-tight space is filled in；

Wherein, it rotates when the rotary shaft is driven externally so that the revolving bed and the annular groove unit are rotated relative to the shell When, which is distributed in the first area and the second area by centrifugation power drive simultaneously, and blockades the neighbouring filled layer Gas be connected with the gas of the neighbouring rotary shaft.

2. rotary shaft liquid seal device according to claim 1, it is characterised in that: the annular groove unit includes the first ring wall, close The affixed rotation basal wall is closed, extends from the rotation basal wall towards the shell basal wall and is spaced around the surrounding wall.

3. rotary shaft liquid seal device according to claim 2, it is characterised in that: the annular groove unit further includes the second ring wall, Snugly affixed first ring wall, extends towards the surrounding wall from first ring wall and is spaced around the surrounding wall.

4. rotary shaft liquid seal device according to claim 2, it is characterised in that: first ring wall is existed from the rotation basal wall The axis of the rotary shaft extends up towards the shell basal wall.

5. rotary shaft liquid seal device according to claim 3, it is characterised in that: second ring wall is existed from first ring wall This radially of the axis of rotation on towards the surrounding wall extend.

6. rotary shaft liquid seal device according to claim 5, it is characterised in that: the annular groove unit further includes third ring wall, Snugly affixed second ring wall, extends and is spaced up towards the separation ring wall in the axis of the rotary shaft from second ring wall and surround The surrounding wall.

7. rotary shaft liquid seal device according to claim 2, it is characterised in that: the separation ring wall is from the surrounding wall at this The first ring wall on radially of the axis of rotation towards the annular groove unit extends into the fluid-tight space and is spaced around the rotary shaft.

8. rotary shaft liquid seal device according to claim 1, it is characterised in that: the rotary shaft liquid seal device also includes to lead Pipe, extends to the fluid-tight space from the shell exterior, for should the barrier liquid in fluid-tight space.