CN210715953U

CN210715953U - Heavy machinery sealing device

Info

Publication number: CN210715953U
Application number: CN201921662518.6U
Authority: CN
Inventors: 吴建明; 张冰华; 王潮
Original assignee: MIYOU GROUP CO Ltd
Current assignee: MIYOU GROUP CO Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-09
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a heavy-duty mechanical seal device, include: the sealing box body and the bearing box body are sleeved outside the shaft sleeve, a first movable ring, a first spring seat and a spring seat embedded ring are arranged between the shaft sleeve and the sealing box body, the spring seat embedded ring is sleeved on the shaft sleeve, the first spring seat is installed on the spring seat embedded ring, a second movable ring, a second spring and a second spring seat are further arranged between the shaft sleeve and the sealing box body, the second spring seat is sleeved on the shaft sleeve, a first static ring is arranged below the first movable ring, a second static ring is arranged above the second movable ring, and a self-aligning roller bearing is further arranged between the bearing box body and the shaft sleeve; the self-aligning roller bearing is sleeved on the shaft sleeve, and the thick and heavy bearing box body is sleeved on the self-aligning roller bearing, so that the purposes of effectively controlling and preventing the radial swing of the main shaft, using the sealing device as a fulcrum and matching with a fulcrum-free frame and a three-part coupling are achieved.

Description

Heavy machinery sealing device

Technical Field

The utility model relates to a mechanical seal device, concretely relates to heavy-duty mechanical seal device.

Background

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 runs through the device in and out, so that a circumferential gap exists between the shaft and the device, through which gap the medium in the device leaks outwards, a leakage-preventing shaft seal is necessary.

For a machine frame without a fulcrum, the structural strength of the existing sealing device is not enough to meet the condition that the sealing device is used as the fulcrum, and the radial swing of the main shaft influences the sealing efficiency of the sealing device.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a heavy-duty mechanical seal device to reach effectual control and prevent the radial swing of main shaft, make sealing device use as the fulcrum, the purpose that no fulcrum frame of cooperation and trisection formula shaft coupling used.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: a heavy mechanical seal, the apparatus comprising: the sealing box body and the bearing box body are sleeved outside the shaft sleeve, the bearing box body is arranged above the sealing box body, the kettle port flange is fixedly connected below the sealing box body, a first movable ring, a first spring seat and a spring seat embedding ring are arranged between the shaft sleeve and the sealing box body, the first spring is abutted to the top end of the first movable ring, the first spring seat is used for installing the first spring, the spring seat embedding ring is sleeved on the shaft sleeve, the first spring seat is installed on the spring seat embedding ring, a second movable ring, a second spring is abutted to the bottom end of the second movable ring, and a second spring seat is used for installing the second spring is further arranged between the shaft sleeve and the sealing box body, the second spring seat is sleeved on the shaft sleeve, a first static ring matched with the first movable ring is arranged below the first movable ring, and the first static ring is fixedly arranged in the sealing box body and the kettle port flange, the top of second rotating ring is provided with the quiet ring of second with the adaptation of second rotating ring, the quiet ring setting of second is between bearing box and axle sleeve, still be provided with self-aligning roller bearing between bearing box and the axle sleeve, gland cover establishes on the axle sleeve, gland fixes the top that sets up at the bearing box.

Compared with the prior art, the self-aligning roller bearing is established through the cover on the axle sleeve, thick and heavy bearing box is established to the cover on the self-aligning roller bearing, effectual control with prevent the main shaft radial swing, make sealing device use as the fulcrum, cooperation no fulcrum frame and trisection formula shaft coupling use.

Furthermore, a clamping ring is sleeved on the shaft sleeve and is used for facilitating the connection of the shaft sleeve and the main shaft.

Further, the clamping ring comprises an upper clamping ring and a lower clamping ring, and the upper clamping ring and the lower clamping ring are fixedly connected through bolts.

Furthermore, the first movable ring is sleeved on the spring seat inlaying ring, a first sealing ring is arranged between the first movable ring and the spring seat inlaying ring, and the first sealing ring is a 0-shaped ring, so that the sealing effect of the device is effectively improved.

Furthermore, a second sealing ring is arranged between the spring seat embedding ring and the shaft sleeve, and the second sealing ring is a 0-shaped ring, so that the sealing effect of the device is effectively improved.

Further, the bottom that the ring was inlayed to the spring holder is provided with the interior edge of inside extension, be provided with the tetrafluoro gasket between the bottom terminal surface of interior edge and axle sleeve, the effectual axle sleeve tip of avoiding of tetrafluoro gasket inlays the ring friction with the spring holder.

Furthermore, a third sealing ring is arranged between the second static ring and the bearing box body, and the third sealing ring is a 0-shaped ring, so that the sealing effect of the device is effectively improved.

Furthermore, the upper end and the lower end of the self-aligning roller bearing are respectively provided with an elastic retaining ring for a shaft, the elastic retaining ring for the shaft is sleeved on the shaft sleeve, and the elastic retaining ring effectively fixes the self-aligning roller bearing to prevent the self-aligning roller bearing from axially moving on the shaft sleeve.

Furthermore, a positioning clamping piece is fixedly arranged above the sealing gland, the positioning clamping piece is sleeved on the shaft sleeve, and the positioning clamping piece increases the stability of the device structure.

Further, be provided with the skeleton oil blanket between bearing box and the axle sleeve, effectual sealing.

The utility model has the advantages of as follows:

the utility model discloses a cover is established aligning roller bearing, is established the bearing box of heaviness on aligning roller bearing to the cover on the axle sleeve, effectual control with prevent the main shaft radial oscillation, make sealing device use as the fulcrum, cooperation no fulcrum frame and trisection formula shaft coupling use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic structural view of a heavy mechanical sealing device disclosed in an embodiment of the present invention;

the corresponding part names indicated by the numbers and letters in the drawings:

1. a shaft sleeve; 2. sealing the box body; 3. a bearing housing; 4. a kettle mouth flange; 5. a sealing gland; 6. a first rotating ring; 7. a first spring; 8. a first spring seat; 9. a spring seat insert ring; 10. a second rotating ring; 11. a second spring; 12. a second spring seat; 13. a first stationary ring; 14. a second stationary ring; 15. a self-aligning roller bearing; 16. a clamping ring; 17. a tetrafluoro spacer; 18. positioning the card; 19. and (5) framework oil seal.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The utility model provides a heavy mechanical seal device, its theory of operation is through the cover establish aligning roller bearing on the axle sleeve, overlap the bearing box body of establishing the heaviness on aligning roller bearing to reach effectual control and prevent the radial swing of main shaft, make sealing device use as the fulcrum, the purpose that cooperation no fulcrum frame and trisection formula shaft coupling used.

The present invention will be described in further detail with reference to examples and embodiments.

As shown in fig. 1, a heavy mechanical seal device, the device comprising: the sealing device comprises a shaft sleeve 1, a sealing box body 2, a bearing box body 3, a kettle mouth flange 4 and a sealing gland 5, wherein the sealing box body 2 and the bearing box body 3 are sleeved outside the shaft sleeve 1, the bearing box body 3 is arranged above the sealing box body 2, the kettle mouth flange 4 is fixedly connected below the sealing box body 2, a first movable ring 6, a first spring 7 abutted against the top end of the first movable ring 6, a first spring seat 8 used for mounting the first spring 7 and a spring seat embedded ring 9 are arranged between the shaft sleeve 1 and the sealing box body 2, the spring seat embedded ring 9 is sleeved on the shaft sleeve 1, the first spring seat 8 is mounted on the spring seat embedded ring 9, a second movable ring 10, a second spring 11 abutted against the bottom end of the second movable ring 10 and a second spring seat 12 used for mounting the second spring 11 are further arranged between the shaft sleeve 1 and the sealing box body 2, the second spring seat 12 is sleeved on the shaft sleeve 1, the below of first rotating ring 6 is provided with the first quiet ring 13 with the adaptation of first rotating ring 6, first quiet ring 13 is fixed to be set up in seal box 2 and cauldron mouth flange 4, the top of second rotating ring 10 is provided with the quiet ring 14 of second with the adaptation of second rotating ring 10, the quiet ring 14 of second sets up between bearing box 3 and axle sleeve 1, still be provided with self-aligning roller bearing 15 between bearing box 3 and the axle sleeve 1, seal gland 5 overlaps and establishes on axle sleeve 1, seal gland 5 is fixed to be set up in the top of bearing box 3.

Wherein, the bearing box body 3 is fixedly connected with the sealing box body 2 through screws, the sealing box body 2 is fixedly connected with the kettle mouth flange 4 through screws, the sealing gland 5 is fixedly connected with the bearing box body 3 through screws, the first spring seat 8 is arranged on the spring seat inlaying ring 9 through screws, the second spring seat 12 is arranged on the shaft sleeve 1 through screws,

wherein, the sealing box body 2 is provided with a sealing liquid inlet and a cooling water inlet, and the bearing box body 3 is provided with a leakage hole, an oil filling hole, a sealing liquid outlet and a cooling liquid outlet.

Compared with the prior art, this application establishes self-aligning roller bearing 15, overlaps on self-aligning roller bearing 15 and establishes massive bearing box 3 through the cover on axle sleeve 1, effectual control with prevent that the main shaft radial swing makes sealing device use as the fulcrum, and the cooperation does not have fulcrum frame and trisection formula shaft coupling and uses.

Wherein, the shaft sleeve 1 is sleeved with a clamping ring 16, and the clamping ring 16 is used for facilitating the connection of the shaft sleeve 1 and the main shaft.

Wherein, the clamping ring 16 comprises an upper clamping ring and a lower clamping ring, and the upper clamping ring and the lower clamping ring are fixedly connected through bolts.

The first rotating ring 6 is sleeved on the spring seat inlaying ring 9, a first sealing ring is arranged between the first rotating ring 6 and the spring seat inlaying ring 9, the first sealing ring is a 0-shaped ring, and the sealing effect of the device is effectively improved.

A second sealing ring is arranged between the spring seat insert ring 9 and the shaft sleeve 1, and the second sealing ring is a 0-shaped ring, so that the sealing effect of the device is effectively improved.

Wherein, the bottom of ring 9 is inlayed to the spring holder is provided with the interior edge of inside extension, be provided with tetrafluoro gasket 17 between interior edge and the bottom terminal surface of axle sleeve 1, the effectual axle sleeve 1 tip of avoiding of tetrafluoro gasket 17 and the ring 9 friction are inlayed to the spring holder.

And a third sealing ring is arranged between the second stationary ring 14 and the bearing box body 3, and the third sealing ring is a 0-shaped ring, so that the sealing effect of the device is effectively improved.

The upper end and the lower end of the self-aligning roller bearing 15 are provided with elastic check rings for shafts, the elastic check rings for shafts are sleeved on the shaft sleeve 1, the elastic check rings effectively fix the self-aligning roller bearing 15, and the self-aligning roller bearing 15 is prevented from axially moving on the shaft sleeve 1.

Wherein, the fixed location card 18 that is provided with in gland 5 top, location card 18 cover is established on axle sleeve 1, and location card 18 has increased the stability of device structure.

Wherein the positioning card 18 is connected with the gland 5 by a screw.

Wherein, be provided with skeleton oil blanket 19 between bearing housing 3 and the axle sleeve 1, effectual sealed.

After the heavy mechanical sealing device is sleeved on the main shaft, the self-aligning roller bearing 15 and the thick bearing box body 3 can effectively control and prevent the main shaft from radially swinging, so that the sealing device is used as a fulcrum and is matched with a fulcrum-free rack and a three-part coupler for use.

The above description is only a preferred embodiment of the heavy mechanical sealing device disclosed in the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept, and these all fall into the protection scope of the present invention.

Claims

1. A heavy mechanical seal, the seal comprising: the sealing box body and the bearing box body are sleeved outside the shaft sleeve, the bearing box body is arranged above the sealing box body, the kettle port flange is fixedly connected below the sealing box body, a first movable ring, a first spring seat and a spring seat embedding ring are arranged between the shaft sleeve and the sealing box body, the first spring is abutted to the top end of the first movable ring, the first spring seat is used for installing the first spring, the spring seat embedding ring is sleeved on the shaft sleeve, the first spring seat is installed on the spring seat embedding ring, a second movable ring, a second spring is abutted to the bottom end of the second movable ring, and a second spring seat is used for installing the second spring is further arranged between the shaft sleeve and the sealing box body, the second spring seat is sleeved on the shaft sleeve, a first static ring matched with the first movable ring is arranged below the first movable ring, and the first static ring is fixedly arranged in the sealing box body and the kettle port flange, the top of second rotating ring is provided with the quiet ring of second with the adaptation of second rotating ring, the quiet ring setting of second is between bearing box and axle sleeve, still be provided with self-aligning roller bearing between bearing box and the axle sleeve, gland cover establishes on the axle sleeve, gland fixes the top that sets up at the bearing box.

2. The heavy mechanical seal of claim 1, wherein the shaft sleeve is sleeved with a clamping ring.

3. The heavy mechanical seal of claim 2, wherein the clamping ring comprises an upper clamping ring and a lower clamping ring, and the upper clamping ring and the lower clamping ring are fixedly connected through bolts.

4. The heavy mechanical seal of claim 1, wherein the first rotating ring is sleeved on the spring seat insert ring, and a first seal ring is disposed between the first rotating ring and the spring seat insert ring.

5. The heavy mechanical seal device of claim 1, wherein a second seal ring is disposed between the spring seat insert ring and the shaft sleeve.

6. The heavy mechanical seal device according to claim 1, wherein the bottom end of the spring seat insert ring is provided with an inner edge extending inwards, and a tetrafluoro gasket is arranged between the inner edge and the bottom end face of the shaft sleeve.

7. The heavy mechanical seal of claim 1, wherein a third seal ring is disposed between the second stationary ring and the bearing housing.

8. The heavy mechanical seal device according to claim 1, wherein elastic retaining rings for shafts are arranged at the upper end and the lower end of the self-aligning roller bearing, and the elastic retaining rings for shafts are sleeved on the shaft sleeve.

9. The heavy mechanical seal device according to claim 1, wherein a positioning clip is fixedly disposed above the seal gland, and the positioning clip is sleeved on the shaft sleeve.

10. The heavy mechanical seal device of claim 1, wherein a skeleton oil seal is arranged between the bearing box and the shaft sleeve.