CN2926685Y

CN2926685Y - Filler sealer

Info

Publication number: CN2926685Y
Application number: CN 200620044246
Authority: CN
Inventors: 程纪祥; 须文彪; 杨忠
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2006-07-25
Filing date: 2006-07-25
Publication date: 2007-07-25
Anticipated expiration: 2016-07-25

Abstract

The utility model discloses a filling seal device, which is made up by principal machine body and sealing seat, shaft, filling and pressure cover. The principal machine body is equal to the shaft referring to shaft hole. The sealing seat is provided sealing hole whose hole diameter is bigger than diameter of the shaft. The shaft is installed in interval of the shaft hole, and sealed chamber is formed with the sealing hole. The filling is arranged in the sealing hole. Part of the pressure cover inserted into the sealed chamber tips against convex pressure ring of the filling. The characteristics are that: the sealing seat is connected with frame. The frame is provided with head end and screw ring. Pressure cap sleeved the shaft is provided in inner screw of the screw ring. Flexible component sleeved the shaft is arranged inside the frame and between the pressure cap and the pressure cap. The principal machine body is separated from the sealing seat, and the two parts are provided with cushion amid and connected by bolt. Ergometer is positioned outside the flexible component and between the pressure cap and the pressure cap. The filling seal device can generate compressing force to conduct automatic compensation with stable force and average distribution. The can be adjusted in sight, and the filling can be easily replaced.

Description

Stuffing seal

Technical field

The utility model relates to and being used in the fluid machinery, and for example the seal arrangement of water pump relates in particular to the stuffing seal of using between a kind of body and the axle.

Background technique

Usually will seal between body and the axle, for example water pump just need be to sealing between the pump housing and the axle.Mainly contain mechanical seal at present, sealing means such as common fillers sealing.Mechanical seal have price very expensive, be easier to damage, the user cost height, Sealing is changed shortcomings such as difficulty is loaded down with trivial details; Therefore many in the practical application based on packing seal.

Fig. 1 has shown more a kind of stuffing seal of application, this device comprises main engine body 2, sealing seat 401, axle 1, filler 5 and gland 600, main engine body 2 is structure as a whole with sealing seat 401, wherein main engine body 2 has and the suitable axis hole of axle 1 diameter of axle, sealing seat 401 has the closed hole of aperture greater than axle 1 diameter of axle, axle 1 rotates in the axis hole of main engine body 2, form Seal cage between closed hole and the axle 6, filler 5 just is installed in the Seal cage, gland 600 is by last, each bolt and nut component 902 is fixed on the sealing seat 401 down, one end of this gland 600 has outstanding pressure ring 608, and outstanding pressure ring 608 parts stretch into to replace in the Seal cage and compress filler 5.

From practical application, find that there is following shortcoming in this existing stuffing seal:

1, because constantly rotation of axle, thereby filler is is constantly worn and torn, leakage rate can be more and more from seldom becoming, and need constant to carry out fastening to bolt.But because axle rotates, so there is a problem in the impacting force that wants to adjust stuffing box packing: shutdown adjustment then can't be known suitable tightness; It is then dangerous, dangerous not shut down adjustment.And the sealing of this common fillers compresses gland by two bolts, and is difficult to guarantee that two bolts have same active force, will press so partially, and the tension that a side pressure occurs can generate heat too many and burn, and opposite side pine excessively leaks.

2, being difficult to determine the size of impacting force when sealing for the first time, is not that too pine is leaked too much, is exactly too tightly filler to be burnt.

3, filler has been crushed on very dark Seal cage, is difficult to when changing stuffing box packing they from Seal cage one are dug out, and often can only change several fillers of outside, changes, the very time-consuming very effort of maintenance.

Summary of the invention

First purpose of the present utility model is to provide a kind of impacting force to compensate automatically, the power constant magnitude, is evenly distributed, and has more a kind of stuffing seal of excellent sealing effect.

In order to realize above-mentioned first purpose, stuffing seal of the present utility model comprises the main engine body and the sealing seat that link together, and axle, filler and gland; Main engine body has and the suitable axis hole of the axle diameter of axle, sealing seat has the closed hole of aperture greater than the axle diameter of axle, the cooperation of between centers crack is installed in the axis hole and also and between the closed hole forms Seal cage, filler is installed in the Seal cage, gland has the projection pressure ring that part gos deep into replacing in the Seal cage filler, wherein: described sealing seat is connected with the support that the termination has threaded collar, is rotary with the pressure cap that is enclosed within on the axle in the threaded collar, is provided with the elastic element that is enclosed between gland and pressure cap on the axle in the support.

Second purpose of the present utility model is to make this stuffing seal impacting force size realization readable, adjusts impacting force exactly thereby be convenient to operator.

In order to realize above-mentioned second purpose, in further improvement of the utility model, the described elastic element outside is equipped with dynamometer between gland and pressure cap.This dynamometer is made of meter seat, pointer, little spring, its one of falling into a trap is connected on the gland and has perforate, pointer part is positioned at perforate, and its main body section has calibrated scale, be positioned at the outer end of perforate has baffle ring, and little spring is enclosed within on the pointer between meter seat and baffle ring.

Also have guiding groove on the described meter seat, the end that pointer is positioned at perforate is processed with the guide rod in the guiding groove slide guide.

The 3rd purpose of the present utility model is to make this filler device can be convenient to change filler.Therefore, further improve of the present utility model, described sealing seat and main engine body be for dividing a body structure, is provided with sealing gasket between the two and links together by bolt.Even in order further to be convenient for changing filler, described support and sealing seat also are the branch body structures and are connected by bolt.

Adopt technique scheme, the utlity model has following advantage:

1, replaces gland and then compress filler owing to having elastic element, under the situation that filler constantly weares and teares, because the return action of elastic element, can compress compensation to filler automatically, make and have a more constant impacting force all the time and compress filler, adopting screw thread turn-knob mode to carry out degree of tightness simultaneously regulates, can make the impacting force that is distributed on each position of filler even, filler can not occur is pressed partially, cause the tension of a side pressure can generate heat too many and burn, opposite side is the pine situation of leaking excessively.

2, owing to be provided with dynamometer, make the big or small visual, definite of impacting force, made things convenient for adjusting, maintenance, do not need as conventional seals, must start shooting and could regulate, can not occur too pine yet and leak, perhaps the situation of too tightly filler being burnt.

3, because sealing seat and main engine body are the branch body structures, even support and sealing seat also be the branch body structure, so just makes when changing filler, can all can take out old filler from the both sides of sealing seat, and new filler is installed, and be very convenient, efficient.

Therefore, stuffing seal of the present utility model has impacting force and can compensate automatically, the power constant magnitude, is evenly distributed, can the visual convenient filler advantage easily of regulating and change.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is elaborated:

Fig. 1 is the structural drawing of the stuffing seal of prior art;

Fig. 2 is the structural drawing of stuffing seal of the present utility model;

Fig. 3 is the A-A echelon sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 2.

Among the figure: 1, axle 2, main engine body 3, sealing gasket 401, sealing seat 402, support 403, threaded collar 404, closed hole 5, filler 6, dynamometer 600, gland 601, perforate 602, meter seat 603, calibrated scale 604, little spring 605, baffle ring 606, pointer 607, scale-reading window 608, outstanding pressure ring 609, guiding groove 610, guide rod 7, big spring 8, pressure cap 801, tightening hole 901, bolt 902 bolt and nut components

Embodiment

As Fig. 2 and in conjunction with shown in Figure 3, a kind of stuffing seal of the present utility model comprises main engine body 2, sealing seat 401, support 403, axle 1, filler 5, gland 600, pressure cap 8, big spring 7, dynamometer 6.

Sealing seat 401 and main engine body 2 are for dividing body structure, between be provided with sealing gasket 3, and closely link together by bolt 901, wherein main engine body 2 has axis hole, its aperture is suitable with the diameter of axle of axle 1, be installed in the axis hole of main engine body 2 to axle 1 Spielpassung, an end is positioned at main engine body 2 and is connected with impeller, and an end is positioned at outside the main engine body 2 and is connected with motor.Sealing seat 401 has closed hole 404, and its aperture forms packing cavity greater than the diameter of axle of axle 1 between sealing hole 404 and the axle 1.Filler 5 is filled in the packing cavity.Because sealing seat 401 and main engine body 2 when needs are changed filler 5, disassemble sealing seat 401 from main engine body 2 like this for dividing body structure, all can take out old filler from the two ends of closed hole, and new filler is installed.Certainly, also sealing seat 401 and main body machine 2 can be processed into integrative-structure, so just not need sealing gasket 3 and bolt 901, but shortcoming is can only change filler from an end of closed hole, very inconvenience and difficult.

Gland 600 has projection pressure ring 608, and the diameter of axle of the interior diameter ratio shaft 1 of this projection pressure ring 608 is bigger, and external diameter is more smaller than closed hole 404, and projection pressure ring 608 parts stretch into and replace filler in the packing cavity.Support 403 is structure as a whole with sealing seat 401, and its termination away from gland has threaded collar 403, and turn-knob has the pressure cap 8 that is enclosed within on the axle 1 in the threaded collar 403, has tightening hole 801 on the pressure cap 8, and this tightening hole 801 cooperates other instrument to be used for the turn-knob pressure cap.This pressure cap 8 can be processed into other directly structure of turn-knob pressure cap.Support 403 and sealing seat 401 also can the design mix body structures, couple together by bolt, when changing filler, support 403 can be disassembled the more convenient replacing of carrying out filler from sealing seat 401.

Big spring 7 be enclosed within the axle 1 between gland 600 and pressure cap 8, compress big spring 7 earlier by tightening pressure cap 8; The elastic force of big spring 7 acts on the gland 600, so that compress automatically by 608 pairs of fillers 5 of projection pressure ring on gland 600 of processing.In the compaction process to filler 5, impacting force is the each several part that acts on filler evenly distributedly, filler can not occur and be pressed partially, causes the tension of a side pressure can generate heat too many and burns, and opposite side is the pine situation of leaking excessively.

Big spring 7 should be selected suitable length, and its force variation is not very big when guaranteeing to stretch within the specific limits, so just can compress with a more constant impacting force filler.Because filler can not be compressed after just tight again and produce a bigger length difference, so this realizes than being easier to.

After filler 5 wore and tore, the gap between filler 5 and axle 1 can become greatly naturally, but because the elastic force effect of big spring 7, filler 5 meeting quilts are more flat from dynamic pressure.With the gap between automatic compensation filler 5 and the axle 1.The inwall of filler 5 still can be close on the axle 1, serious leakage can not take place.

Between gland 600 and pressure cap 8, dynamometer 6 is installed in big spring 7 outsides.In conjunction with shown in Figure 4, this dynamometer 6 is made of meter seat 602, pointer 606, little spring 604, and its seat 602 one of falling into a trap are connected on the gland 600 and have perforate 601, guiding groove 609 and scale-reading window 607.Pointer 606 parts are positioned at perforate 601, the end that its main body section has calibrated scale 603, be positioned at perforate 601 has guide rod 610, be positioned at perforate 601 outer ends and have baffle ring 605, little spring 604 is enclosed within on the pointer 606 and is counting between seat 602 and the baffle ring 605.Because guide rod 610 slide guide in guiding groove 609 is arranged, pointer 606 is done axial translation in perforate 601, but can not rotate, and calibrated scale 603 conveniently reads the impacting force value all the time towards scale-reading window 607.In fact, meter seat 602 also can not leave guiding groove, do not process guide rod on the pointer 606, only the process of pointer 606 axial translation in perforate can rotate, as long as calibrated scale 603 annulars are engraved on the pointer 606, and a plurality of angles carry out the repetition standard, and perhaps perforate 601 and pointer 606 cross sections all are processed into square.

The active force of little spring 604 requires little, as long as can release and guarantee that the right-hand member of pointer 606 withstands on the pressure cap 8 to pointer 606, this active force can be ignored for the active force of big spring 7.When tightening pressure cap 8 and depressing big spring 7, pointer 606 will while and together displacement of main spring 7.The amount of movement of pointer 606 is exactly main spring 7 compressed amounts.Just can know the corresponding active force of spring by the calibrated scale of observing on the pointer 606 603, promptly know the impacting force that filler 5 is suffered.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model the above embodiment's variation, modification.

Claims

1, a kind of stuffing seal comprises the main engine body and the sealing seat that link together, and axle, filler and gland; Main engine body has and the suitable axis hole of the axle diameter of axle, sealing seat has the closed hole of aperture greater than the axle diameter of axle, the cooperation of between centers crack is installed in the axis hole and also and between the closed hole forms Seal cage, filler is installed in the Seal cage, gland has the projection pressure ring that part gos deep into replacing in the Seal cage filler, it is characterized in that: described sealing seat is connected with the support that the termination has threaded collar, is rotary with the pressure cap that is enclosed within on the axle in the threaded collar, is provided with the elastic element that is enclosed between gland and pressure cap on the axle in the support.

2, stuffing seal according to claim 1 is characterized in that: described main engine body and sealing seat are structure as a whole.

3, stuffing seal according to claim 1 is characterized in that: described sealing seat and main engine body be for dividing a body structure, is provided with sealing gasket between the two and links together by bolt.

4, stuffing seal according to claim 3 is characterized in that: described support and sealing seat are structure as a whole.

5, stuffing seal according to claim 3 is characterized in that: described support is connected for the branch body structure and by bolt with sealing seat.

6, stuffing seal according to claim 4 is characterized in that: the described elastic element outside is equipped with dynamometer between gland and pressure cap.

7, stuffing seal according to claim 6, it is characterized in that: described dynamometer is made of meter seat, pointer, little spring, its one of falling into a trap is connected on the gland and has perforate, pointer part is positioned at perforate, its main body section has calibrated scale, be positioned at the outer end of perforate has baffle ring, and little spring is enclosed within on the pointer between meter seat and baffle ring.

8, stuffing seal according to claim 7 is characterized in that: also have guiding groove on the described meter seat, the end that pointer is positioned at perforate is processed with the guide rod in the guiding groove slide guide.

9, stuffing seal according to claim 7 is characterized in that: described perforate and pointer cross section all are processed into square.

10, according to Claim 8 or 9 described stuffing seals, it is characterized in that: have scale-reading window on the described meter seat.