CN2470586Y

CN2470586Y - Shaft sealing device of rotary machinery

Info

Publication number: CN2470586Y
Application number: CN 01218252
Authority: CN
Inventors: 黄政修
Original assignee: Scenic Precise Element Inc
Current assignee: Scenic Precise Element Inc
Priority date: 2001-03-26
Filing date: 2001-03-26
Publication date: 2002-01-09
Anticipated expiration: 2011-03-26

Abstract

A shaft gland device of a rotation machine comprises a shaft sleeve, a collar, an internal ring-loop set, a seal cover, an external ring-loop set and a fixing lantern ring all sleeved in sequence on a mandrel and arranged at the stuffing box of the pump mandrel. The whole shaft gland device is fixed on the mandrel surface. The inside shaft sleeve body surface is provided with a plurality of lengthways milling flutes. Springs are arranged in the collar and the fixing lantern ring of the external ring-loop set. The shaft gland device of the rotation machine can achieve the practical functions of anti-leak, good radiating performance and convenience for mounting, dismounting and maintaining.

Description

The gland seal device of rotary machine

The utility model relates to a kind of gland seal device of rotary machine.

Pump is common rotary machine, and its structural design is the mandrel that is pivoted therein, the mandrel top is provided with impeller, and in the mandrel bottom power plant is set, the startup of power plant, can drive the mandrel rotation, and the impeller draw liquid, and liquid is sent to required part.

This pump structure, filler culvert place at mandrel, the capital is provided with a gland seal device, and can seal the mandrel pivot points, is gone out by the pivot-connecting position seepage to avoid the liquid that pressurization transmits in the outer group spring seat, and the rotation of mandrel, be easy to generate axle envelope rotation surface and stationary plane friction at the position, pivot-connecting position and cause the shortcoming of high temperature, for this reason, the runner that circulating liquid circulation cooling is provided can be set in gland seal device, and the temperature of reduction axle that can be in good time envelope pivot-connecting position reaches the heat radiation cooling effect.

This runner that provides circulating liquid to circulate, generally speaking, all do not remake further and handle, and enhancing structural design, to such an extent as to the circulation of the circulating liquid of cooling usefulness, must force pressure via the source, could increase the flowability of circulating liquid, and in good time heat is taken out of, thus, promptly must increase the pressurizing system pump of circulating liquid and improve electric energy loss, increase many extra cost expenditures on foot, in the traditional gland seal device, there is no the interior pressure design of dress liquid in the outer group spring seat that contends with, in case and after the radiating efficiency variation, gland seal device is expanded the bad phenomenon that promptly may cause seepage because of heat, that is, commonly use the gland seal device of pump, need adopt extra pressurization, make pressure greater than the pump discharge side pressure, and must increase many supplementary equipment, cause complex structure and heaviness, and assembling wastes time and energy, and truly has the necessity that is improved.

The purpose of this utility model be to provide a kind of and can prevent to leak, thermal diffusivity is good and the gland seal device that is easy to the rotary machine of dismounting maintenance.

In order to achieve the above object, the utility model provides a kind of gland seal device of rotary machine, it is characterized in that: comprise the axle sleeve, collar, interior ring group, sealing cover, outer ring group and the retaining collar that are set in regular turn on the mandrel, and being arranged at filler culvert place of the mandrel of pump, this mandrel is hubbed in this gland seal device;

This axle sleeve is fixedly arranged on this mandrel surface, the body surface of axle sleeve is laid most lengthways milling grooves, this collar is arranged at this axle sleeve outside, the inboard inward flange that forms of this collar, gap slot and interior group spring seat are set on this inward flange, in this gap slot perforation is set, in the group spring seat spring is set in this, in this perforation locating stud is set;

Should interior ring group comprise interior group swivel becket, interior group of retaining ring, should form caulking groove by interior group swivel becket apical margin, root edge outwards enlarges and forms class's flange, and a pressure ring inner edge is provided with most locating slots, this pressure ring is inserted in this collar, and locating stud is arranged in the caulking groove of locating slot and group swivel becket;

The sealing lid is fixedly arranged on the terminal edge of pump, the ring inboard of sealing cover is provided with relative lip part, the ring outer surface setting of sealing lid runs through and screw of going into and the perforation that continues, be provided with in addition two on the sealing cover ring of end side by side and run through and the screw and the perforation of going into respect to screw, guide plate is set in two perforation spacings;

This outer ring group comprises outer group retaining ring and outer group swivel becket, and this outer group retaining ring bottom forms outward extending lower protruding edge, the top is provided with clip slot, and this outer group swivel becket side face downside is provided with locating slot;

Protuberance in forming in this retaining collar, the retaining collar side face is provided with most screws, should inner groove be set interior protuberance inner edge, should on the interior protuberance most outer group spring seats and locating stud be set, should in the outer group spring seat spring be set, should organize the body surface that swivel becket and retaining collar are sheathed on this axle sleeve outward, this outer group swivel becket is arranged in this retaining collar.

The gland seal device of described rotary machine is characterized in that: locating stud is set on the described guide plate inserts the clip slot of the clip slot that establishes group retaining ring bottom in this and outer group retaining ring top establishing and fix.

The gland seal device of described rotary machine, it is characterized in that: the body top of described axle sleeve forms flange end, and these flange end medial and lateral are provided with groove respectively, and O type ring is set in this each groove, this flange end side face is provided with most screws, and this screw is locked from inside to outside for screw pulls.

The gland seal device of described rotary machine is characterized in that: sheathed O type ring and flat ring on the interior group of swivel becket of described interior ring group.

The gland seal device of described rotary machine is characterized in that: described outer group swivel becket side face is provided with outer groove, and O type ring is set in this outer groove.

The gland seal device of described rotary machine is characterized in that: between described outer group swivel becket and retaining collar pressure ring is set, this pressure ring outer rim is provided with most locating slots.

Advantage of the present utility model is: the clamping type structure of gland seal device comprises structures such as axle sleeve, collar, interior ring group, sealing cover, outer ring group and retaining collar in regular turn, and be arranged at culvert place of pump mandrel filler, mandrel is hubbed in the gland seal device, design by this, and can reach prevent to leak, thermal diffusivity is good and be easy to practical effect such as dismounting maintenance.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 is an assembled sectional view of the present utility model.

Fig. 3 is a local assembled sectional view of the present utility model.

Fig. 4 is the assembled sectional view that the utility model is arranged at the pump of rotary machine.

Fig. 5 is the assembled sectional view of the utility model sealing cover and each member.

Fig. 6 is another composite structure sectional view of the utility model.

At first, please cooperate referring to Figure 1 and Figure 2, it is respectively the three-dimensional exploded view and the assembled sectional view of the utility model gland seal device 1, it from top to bottom is a clamping type shaft seal structure when vertically arranging, comprise in regular turn: structures such as axle sleeve 10, collar 20, interior ring group 30, sealing cover 50, outer ring group 60 and retaining collar 70, and the filler that is arranged at pump 90 is contained 92 positions, and, the mandrel 91 of pump 90 is hubbed in the gland seal device 1, and can start mandrel 91 rotations, and utilize the set impeller of mandrel 91 1 ends, transmitted drawing the liquid of pumping.

Axle sleeve 10 as shown in Figure 1 and Figure 2 is urgent mandrel 91 surfaces that are consolidated in, body 11 surfaces of this axle sleeve 10 are laid with most lengthways milling grooves 111, body 11 tops form flange end 13, flange end 13 medial and lateral are provided with

groove

12,14 respectively, O type ring can be set in the

groove

12,14, flange end 13 side faces are provided with most screws 131, and screw 132 is located in the screw 131 by interior spiral shell outwardly, and body 11 bottoms are provided with most screws 112 and bore a hole 113.

Collar 20 is arranged at axle sleeve 10 outsides, the collar 20 inboard inward flanges 21 that form, most gap slots 22 are set on the inward flange 21, perforation 221 is set in the gap slot 22, and on inward flange 21, be provided with and organize spring seat 23 in most, but interior group spring seat 23 ammunition feed springs 231 are provided with wherein, bore a hole and 221 then can penetrate setting for locating stud 222, positioning hole 24 is set on the collar 20, positioning hole 24 is corresponding with screw 131 on the axle sleeve 10, and screw 132 by axle sleeve 10 inside outwardly spiral shell be located at screw 131, can cooperate referring to shown in Figure 3, can make the protuberance 133 of screw 132 front ends insert in the positioning hole 24 of collar 20, and can avoid the locking of screw 132 ecto-entads, cause collar 20 depressions in the surface, and screw 132 is established by interior spiral shell outwardly, can be with the rotation of work mandrel 91, and can make screw 132 can reach effect more fastening and that be difficult for getting loose by centrifugal force.

As Fig. 1, group swivel becket 31 in interior ring group 30 shown in Figure 2 comprises, interior group retaining ring 40, interior group swivel becket 31 apical margins form caulking groove 311, root edge outwards enlarges and formation class flange 32, O type ring 33 and flat ring 34, group swivel becket 31 in can being sheathed in regular turn, one pressure ring, 35 inner edges are provided with most locating slots 351, pressure ring 35 is inserted in the collar 20, make locating stud 222 be positioned at locating slot 351, and insert in the collar 20 with interior group of swivel becket 31 of interior ring group 30 pressure ring 35 is withstood, and making locating stud 222 can be arranged in caulking groove 311 is fixed, interior group retaining ring 40 tops form upper flange 42, turning point, upper flange 42 bottom side can be provided with O type ring, and interior group of retaining ring 40 bottoms are provided with clip slot 41, one flat rings 43 and are arranged at sealing cover 50 mesopore sides.

Sealing cover 50 can be fixed at pump 90 terminal edge by bolt 501, the ring inboard of sealing cover 50 is provided with relative lip part 58, relative lip part can be provided with O type ring about in the of 58, and run through and screw 51 of going into and the perforation 52 that continues in the ring outer surface setting of sealing cover 50, be provided with two in addition on sealing cover 50 rings of end side by side and run through and the screw 54 of going into and bore a hole 55 with respect to screw 51, in the spacing of two perforation 55, guide plate 56 be set then.

Outer ring group 60 comprises outer group retaining ring 61 and outer group swivel becket 62, wherein, outer group retaining ring 61 bottoms form outward extending lower protruding edge 611, the top is provided with clip slot 612, lower protruding edge 611 corners are provided with O type ring, the clip slot 41 of interior group retaining ring 40 and outer group retaining ring 61,612 can wherein be fixed for locating stud set on the guide plate 56 57 insertions, outer group swivel becket 62 side faces are provided with outer groove 621, O type ring can be set in the outer groove 621, outer group swivel becket 62 side face lower edges are provided with locating slot 622, the top inner edge is provided with inner groove 623, one pressure rings 63 outer periphery locating slot 64 is set.

Protuberance 71 in forming in the retaining collar 70, retaining collar 70 side faces are provided with most screws 75, interior protuberance 71 inner edges are provided with inner groove 72, O type ring can be set in the inner groove 72, most outer group spring seats 73 and locating stud 74 are set on the interior protuberance 71, in the outer group spring seat 73 spring 76 is set, outer group swivel becket 62, pressure ring 63 and retaining collar 70 are sheathed on body 11 surfaces of axle sleeve 10, make outer group swivel becket 62 be arranged in retaining collar 70, and pressure ring 63 is butted on spring 76 1 ends, and in the locating slot 622 of the locating slot 64 of locating stud 74 insertion pressure rings 63 and outer group swivel becket 62.

Positioning block 80 1 ends form hook portion 82, but hook portion 82 hooks are located at the engaging annular groove 53 of sealing cover 50, screw 83 can penetrate positioning block 80 and lock in the screw 75 of retaining collar 70, and the formed protuberance 831 of front end can insert in the perforation 113 of axle sleeve 10, and the screw 84 of another form is then except in the screw 75 of locking retaining collar 70 and lock in the screw 112 of axle sleeve 10.

As shown in Figure 5, wherein, set guide plates 56 in the sealing cover 50 are to form positioning hole 561 in the rear end, and insert positioning holes 561 and be arranged in the sealing cover 50 with a fixing column 562, and form runner 59 at axle sleeve 10 and sealing cover 50 inner edges.

As Fig. 2 and shown in Figure 4, the combination of whole gland seal device 1, be to be fixedly arranged on pump 90 acies 93 by sealing cover 50, and axle sleeve 10 is fastening sheathed with mandrel 91, therefore, the rotation of mandrel 91 can drive axle sleeve 10, collar 20 and interior group swivel becket 30 and be rotated, and gland seal device 1 forms gaps towards pump 90 impeller side and mandrel 91 surfaces.On practical operation is used, can cooperate referring to Fig. 2 and shown in Figure 5, when 91 rotations of pump 90 startup mandrels are drawn and are transmitted liquid, liquid object in the pump 90 can be via the gap filling in gland seal device 1 top and tip side side face, and owing to the internal pressure of liquid can compress collar 20 through axle sleeve 10, and, compress spring 231, and the reaction force that spring 231 is compressed then can reduce the outside interior pressure of liquid it is tended towards stability, cooperate set spring 76 in the retaining collar 70, can effectively reduce liquid internal pressure, therefore, design of the present utility model, have the liquid internal pressure of contending with effect, and can avoid drawing the seepage when transmitting liquid.

See Fig. 2 and shown in Figure 5 again, when mandrel 91 rotations, the circulating liquid of cooling usefulness can and be bored a hole by the screw 54 of

sealing cover

50 and 55 be entered, and follow outstanding runner 59 and the heat that mandrel 91 rotation is generated is outwards taken out of by the perforation side by side 52 and the screw 51 of opposite end, and because axle sleeve 10 of the present utility model is to be fixedly arranged on the mandrel 91, and, axle sleeve 10 bodies 11 side faces are provided with most lengthways milling grooves 111, therefore, when mandrel 91 rotations and axle sleeve 10 rotations, the lengthways milling groove 111 that body 11 side faces are laid can form for circulating liquid and a kind ofly stir continuously, make the velocity of liquid assets of acceleration cycle liquid that it can nature, add in the runner 59 of top cover labyrinth 50, the spacing that is arranged in perforation 55 side by side is provided with guide plate 56, can prevent liquid return, and allow the circulating liquid of heat transmission can be more smoothly enter by perforation 55 places, and by the set guide groove 521 of perforation 52 inner edges produce directed stream to and discharge.

In addition, as shown in Figure 6, it then is axle envelope demand in response to client's needs or light-duty pump, and install the gland seal device of one-sided defence, it is that outer group of swivel becket 62 among Fig. 2 and retaining collar 70 foldings are removed, and do not need circulating liquid in sealing cover 50 places input cooling usefulness, also be enough to provide the demand that is provided with of light-duty pump, its positioning block 94 hooks with end formation hook portion 95 are located at the engaging annular groove 53 of sealing cover 50, and lock positioning block 94 with screw 84, and in the screw 961 of sheathed fixed cover 96, in the screw 961 of this fixed cover 96 and screw 85 is set locks in the screw 112 of axle sleeve 10, and the screw 961 that is locked on fixed cover 96 with screw 86, and the protuberance 861 of screw 86 front ends can insert in the perforation 113 of axle sleeve 10 and be located, the circulating liquid of cooling usefulness then is by pump 90 acies 93 places runner to be set, and makes circulating liquid enter the axle envelope and the left side structure of cooling axle envelope by runner.

Claims

1. the gland seal device of a rotary machine, it is characterized in that: comprise the axle sleeve, collar, interior ring group, sealing cover, outer ring group and the retaining collar that are set in regular turn on the mandrel, and being arranged at filler culvert place of the mandrel of pump, this mandrel is hubbed in this gland seal device;

This axle sleeve is fixedly arranged on this mandrel surface, and the body surface of axle sleeve is laid most lengthways milling grooves; This collar is arranged at this axle sleeve outside, and the inboard inward flange that forms of this collar is provided with gap slot and interior group spring seat on this inward flange, in this gap slot perforation is set, and in the group spring seat spring is set in this, in this perforation locating stud is set;

2. according to the gland seal device of the described rotary machine of claim 1, it is characterized in that: locating stud is set on the described guide plate inserts the clip slot of the clip slot that establishes group retaining ring bottom in this and outer group retaining ring top establishing and fix.

3. according to the gland seal device of the described rotary machine of claim 1, it is characterized in that: the body top of described axle sleeve forms flange end, these flange end medial and lateral are provided with groove respectively, O type ring is set in this each groove, this flange end side face is provided with most screws, and this screw is locked from inside to outside for screw pulls.

4. according to the gland seal device of the described rotary machine of claim 1, it is characterized in that: sheathed O type ring and flat ring on the interior group of swivel becket of described interior ring group.

5. according to the gland seal device of the described rotary machine of claim 1, it is characterized in that: described outer group swivel becket side face is provided with outer groove, and O type ring is set in this outer groove.

6. according to the gland seal device of the described rotary machine of claim 1, it is characterized in that: between described outer group swivel becket and retaining collar pressure ring is set, this pressure ring outer rim is provided with most locating slots.