CN113944754A

CN113944754A - Shaft seal seat with built-in cooling cavity

Info

Publication number: CN113944754A
Application number: CN202111195375.4A
Authority: CN
Inventors: 黄虎
Original assignee: Jiangsu Keao Fluid Technology Co ltd
Current assignee: Gaodao Sealing Technology Suzhou Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-01-18

Abstract

The invention discloses a shaft seal seat with a built-in cooling cavity, which comprises a shaft sleeve and a pressing mechanism sleeved outside the shaft sleeve, wherein the pressing mechanism comprises a front-section pressing piece, a middle-section pressing piece, a rear-section pressing piece and a cover plate covering the middle-section pressing piece and the rear-section pressing piece, the front-section pressing piece comprises a positioning groove arranged at the top end of the shaft sleeve and a positioning ring matched and embedded in the positioning groove, the rear-section pressing piece comprises a pressing lantern ring pressed at the tail end of the shaft sleeve and an elastic locking mechanism matched with the pressing lantern ring, a rear-section cooling cavity is reserved between the elastic locking mechanism and the cover plate, the middle-section pressing piece comprises a fastening ring pressed on the outer wall of the shaft sleeve, a middle-section cooling cavity is reserved between the fastening ring and the cover plate, a pressing synapse extending into the middle-section cooling cavity and abutting against the fastening ring is arranged on the upper inner wall of the middle-section cooling cavity, the cooling efficiency and the structural integrity of the shaft seal seat are improved.

Description

Shaft seal seat with built-in cooling cavity

Technical Field

The invention relates to a shaft seal seat, in particular to a shaft seal seat with a built-in cooling cavity.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of auxiliary sealing.

As a common mechanical seal piece, the high-speed pivoted bearing that needs to laminate sets up under the job scene, high-speed relative motion can lead to the contact surface heat accumulation temperature rise, the high temperature state can lead to the axle sleeve inflation and then influence the axle sleeve for the leakproofness of bearing, for solving this problem, we need dispose supporting cooling body for the axle seal seat, but traditional cooling body generally adopts external cover to establish the cooling sealed cabin on the axle sleeve, this kind of external cooling sealed cabin can only realize the effect of whole cooling through cooling to the axle sleeve outer wall, the cooling effect is not good, and external equipment cost is higher, it is too fat to construct.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a shaft seal seat with a built-in cooling cavity aiming at the defects in the prior art.

The technical scheme is as follows: the invention discloses a shaft seal seat with a built-in cooling cavity, which comprises a shaft sleeve and a pressing mechanism sleeved outside the shaft sleeve, wherein the pressing mechanism comprises a front-section pressing piece, a middle-section pressing piece, a rear-section pressing piece and a cover plate covering the middle-section pressing piece and the rear-section pressing piece, the front-section pressing piece comprises a positioning groove formed in the top end of the shaft sleeve and a positioning ring matched with and embedded into the positioning groove, the rear-section pressing piece comprises a pressing lantern ring pressed at the tail end of the shaft sleeve and an elastic locking mechanism matched with the pressing lantern ring, a rear-section cooling cavity is reserved between the elastic locking mechanism and the cover plate, the middle-section pressing piece comprises a fastening ring pressed on the outer wall of the shaft sleeve, a middle-section cooling cavity is reserved between the fastening ring and the cover plate, and a pressing synapse extending into the middle-section cooling cavity and abutting against the fastening ring is arranged on the upper inner wall of the middle-section cooling cavity.

Preferably, a communicating liquid path is connected between the middle section cooling cavity and the rear section cooling cavity.

Preferably, the fastening ring comprises a mountain-shaped fastening ring with a mountain-shaped cross section, the pressing synapse comprises three abutting rings which circumferentially abut against the mountain-shaped fastening ring, and the three abutting rings respectively abut against two ends and a middle point of the mountain-shaped fastening ring.

Preferably, a plurality of water passing holes are formed in the three abutting rings.

Preferably, the top of the contact ring abutting against the midpoint of the mountain-shaped fastening ring is provided with an elastic cushion ring abutting against the mountain-shaped fastening ring.

Preferably, the elastic locking mechanism comprises a clamping block integrally arranged on the outer wall of the pressing lantern ring, elastic fasteners arranged on two sides of the clamping block in a matched mode and a shell body sleeved outside the elastic fasteners on the two sides.

Preferably, the elastic fastener comprises an abutting block abutting against the fixture block and a spring connected between the abutting block and the shell.

Preferably, the sealing ring is filled in the connecting part of the contact block and the fixture block.

Compared with the prior art, the invention has the following beneficial effects: set up hold-down mechanism into anterior segment compressing tightly the piece, the middle section compresses tightly the piece, the back end compresses tightly the piece and covers the apron on middle section compressing tightly piece and back end compressing tightly the piece, can realize compressing tightly the sectional type of axle sleeve, fastening is effectual, and can set up the cooling cavity in hold-down mechanism, the cooling cavity separates for middle section cooling chamber and back end cooling chamber, the cooling efficiency and the structural integrity of this shaft seal seat have been improved, the maintenance degree of difficulty of equipment has also been reduced when having reduced equipment cost.

Drawings

Fig. 1 is a schematic cross-sectional view of a shaft seal seat with a built-in cooling cavity according to the present invention.

In the figure: 1. a shaft sleeve; 2. positioning a groove; 3. a positioning ring; 4. compressing the lantern ring; 5. an elastic locking mechanism; 51. a clamping block; 52. an elastic fastener; 521. a contact block; 522. a spring; 53. a housing; 54. a seal ring; 6. a fastening ring; 7. and (4) compacting synapses.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

The utility model provides a built-in cooling chamber's shaft seal seat, establish the hold-down mechanism outside 1 including axle sleeve 1 and cover, hold-down mechanism includes the anterior segment compressing part, the middle section compresses tightly the piece, the back end compresses tightly the piece and covers the apron on middle section compressing part and back end compressing part, the anterior segment compresses tightly the piece including seting up at the constant head tank 2 on 1 top of axle sleeve and cooperation embedding constant head tank 2's holding ring 3, the back end compresses tightly the piece including compressing tightly the lantern ring 4 and the elasticity locking mechanism 5 that the cooperation compressed tightly lantern ring 4 at the end of axle sleeve 1, leave the back end cooling chamber between elasticity locking mechanism 5 and the apron, the middle section compresses tightly the piece including the tighrening ring 6 of top on 1 outer wall of axle sleeve, leave the middle section cooling chamber between tighrening ring 6 and the apron, be equipped with on the upper inner wall in middle section cooling chamber and extend into middle section cooling chamber and contradict at the synapse 7 that compresses tightly on tighrening ring 6. The technical scheme has the advantages that: set up hold-down mechanism into anterior segment compressing tightly the piece, the middle section compresses tightly the piece, the back end compresses tightly the piece and covers the apron on middle section compressing tightly piece and back end compressing tightly the piece, can realize compressing tightly the sectional type of axle sleeve 1, the fastening is effectual, and can set up the cooling cavity in hold-down mechanism, the cooling cavity separates for middle section cooling chamber and back end cooling chamber, the cooling efficiency and the structural integrity of this shaft seal seat have been improved, the maintenance degree of difficulty of equipment has also been reduced when having reduced equipment cost.

The cooling cavity comprises a middle section cooling cavity and a rear section cooling cavity, a communicating liquid path is needed to be arranged between the middle section cooling cavity and the rear section cooling cavity in order to simplify the structure of the device and enable the device to be matched with and install one set of cooling liquid circulating device, and the middle section cooling cavity and the rear section cooling cavity can be connected into a whole through the communicating liquid path.

In order to ensure that the fastening ring 6 can reliably compress the shaft sleeve 1, the specific structure is set as follows: the fastening ring 6 comprises a mountain-shaped fastening ring 6 with a mountain-shaped cross section, the pressing synapse 7 comprises three abutting rings which are circumferentially abutted on the mountain-shaped fastening ring 6, and the three abutting rings are respectively abutted at the two ends and the middle point of the mountain-shaped fastening ring 6; a plurality of water passing holes are formed in the three abutting rings, so that a smooth water guide structure is ensured in the middle section cooling cavity, and smooth circulation of cooling liquid is facilitated; the conflict ring top at conflict mountain-shaped tighrening ring 6 mid point is equipped with the elastic cushion ring of contradicting with mountain-shaped tighrening ring 6, sets up elastic cushion ring and can guarantee to touch ring top and 6 interference fit of mountain-shaped tighrening ring, has guaranteed to compress tightly the effect.

The specific structure of the elastic locking mechanism 5 is as follows: comprises a fixture block 51 integrally arranged on the outer wall of the compression lantern ring 4, elastic fasteners 52 arranged at two sides of the fixture block 51 in a matching way and a shell 53 sleeved outside the elastic fasteners 52 at two sides; the elastic fastener 52 comprises an abutting block 521 abutting against the fixture block 51 and a spring 522 connected between the abutting block 521 and the shell 53; the sealing ring 54 is filled in the connecting part of the contact block 521 and the fixture block 51. The advantage of this solution is that the elastic fastening element 52 is formed by the contact block 521 abutting against the latch 51 and the spring 522 connected between the contact block 521 and the housing 53, so as to elastically press the latch 51 and ensure a tight sealing effect.

In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example.

Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a shaft seal seat of built-in cooling cavity, includes that axle sleeve and cover establish the hold-down mechanism outside the axle sleeve, its characterized in that: hold-down mechanism includes that anterior segment compresses tightly piece, middle section and compresses tightly piece, back end and covers the apron on middle section compresses tightly piece and back end compress tightly piece, anterior segment compresses tightly the piece including seting up the constant head tank on axle sleeve top and the holding ring of cooperation embedding constant head tank, back end compresses tightly the piece including compressing tightly the elasticity locking mechanism that compresses tightly the lantern ring at the terminal pressing collar of axle sleeve and cooperation pressing collar, leave back end cooling chamber between elasticity locking mechanism and the apron, middle section compresses tightly the piece including the tighrening ring of top tight on the axle sleeve outer wall, leave middle section cooling chamber between tighrening ring and the apron, be equipped with on the upper inner wall in middle section cooling chamber and extend into middle section cooling chamber and contradict the synapse that compresses tightly on the tighrening ring.

2. The shaft seal seat with the built-in cooling cavity as claimed in claim 1, wherein: and a communicating liquid path is connected between the middle section cooling cavity and the rear section cooling cavity.

3. The shaft seal seat with the built-in cooling cavity as claimed in claim 1, wherein: the fastening ring comprises a mountain-shaped fastening ring with a mountain-shaped cross section, the pressing synapse comprises three abutting rings which are abutted to the mountain-shaped fastening ring in a surrounding mode, and the three abutting rings are abutted to the two ends and the middle point of the mountain-shaped fastening ring respectively.

4. The shaft seal seat with the built-in cooling cavity as claimed in claim 3, wherein: and a plurality of water passing holes are formed in the three abutting rings.

5. The shaft seal seat with the built-in cooling cavity as claimed in claim 3, wherein: and the top of the contact ring abutting against the middle point of the mountain-shaped fastening ring is provided with an elastic cushion ring abutting against the mountain-shaped fastening ring.

6. The shaft seal seat with the built-in cooling cavity as claimed in claim 1, wherein: the elastic locking mechanism comprises a clamping block integrally arranged on the outer wall of the pressing lantern ring, elastic fasteners arranged on two sides of the clamping block in a matched mode and a shell sleeved outside the elastic fasteners on the two sides.

7. The shaft seal seat with the built-in cooling cavity as claimed in claim 6, wherein: the elastic fastener comprises a contact block abutting against the fixture block and a spring connected between the contact block and the shell.

8. The shaft seal seat with the built-in cooling cavity as claimed in claim 7, wherein: and a sealing ring is filled in the connecting part of the contact block and the clamping block.