阅读说明：本技术 一种截止阀密封结构 (Stop valve sealing structure ) 是由 金俊伟 于 2020-05-27 设计创作，主要内容包括：本发明提供一种截止阀密封结构,包括阀体,所述阀体外表面固定有连接座,所述连接座远离阀体的一端安装可拆卸的轴套,所述轴套内安装有阀杆,所述阀杆外表面开设有环形槽,所述环形槽内安装有与轴套内表面相贴合的密封圈,所述轴套靠近连接座的一端外表面固定有第一圈边,所述连接座靠近轴套的一端外表面固定有与第一圈边存在一定间距的第二圈边,所述第一圈边通过连接螺栓与第二圈边固定连接,所述轴套面向连接座的一面开设有环形的密封槽,所述密封槽内设有与连接座相贴合的第一密封垫圈,与现有技术相比,本发明具有如下的有益效果：实现轴套与阀体的组合式装配,提高密封圈更换效率,降低更换难度。(The invention provides a stop valve sealing structure, which comprises a valve body, wherein a connecting seat is fixed on the outer surface of the valve body, a detachable shaft sleeve is installed at one end, away from the valve body, of the connecting seat, a valve rod is installed in the shaft sleeve, an annular groove is formed in the outer surface of the valve rod, a sealing ring which is attached to the inner surface of the shaft sleeve is installed in the annular groove, a first ring edge is fixed on the outer surface of one end, close to the connecting seat, of the shaft sleeve, a second ring edge which has a certain distance with the first ring edge is fixed on the outer surface of one end, close to the shaft sleeve, of the connecting seat, the first ring edge is fixedly connected with the second ring edge through a connecting bolt, an annular sealing groove is formed in one surface, facing the connecting seat, of the shaft sleeve, and a first sealing washer which is attached to the connecting seat is arranged in the sealing groove. The combined type assembly of the shaft sleeve and the valve body is realized, the replacement efficiency of the sealing ring is improved, and the replacement difficulty is reduced.)

1. A stop valve seal structure, includes valve body (1), its characterized in that: the outer surface of the valve body (1) is fixedly provided with a connecting seat (2), one end of the connecting seat (2), which is far away from the valve body (1), is provided with a detachable shaft sleeve (3), a valve rod (5) is installed in the shaft sleeve (3), one end of the valve rod (5) penetrates through the connecting seat (2) and extends into the valve body (1), the outer surface of the valve rod (5) is provided with an annular groove (14), a sealing ring (4) which is attached to the inner surface of the shaft sleeve (3) is installed in the annular groove (14), the outer surface of one end, which is close to the connecting seat (2), of the shaft sleeve (3) is fixedly provided with a first ring edge (10), the outer surface of one end, which is close to the shaft sleeve (3), of the connecting seat (2) is fixedly provided with a second ring edge (11) which has a certain distance with the first ring edge (10), the first ring edge (10) is fixedly connected with the second ring edge (11) through a connecting bolt (9), and an annular sealing groove (16) is formed in the way of the shaft sleeve (3) facing to one side of the connecting seat (2), and a first sealing washer (12) attached to the connecting seat (2) is arranged in the sealing groove (16).

2. A stop valve sealing structure according to claim 1, wherein: axle sleeve (3) internal surface machining has ladder groove (17), be close to one side of connecting seat (2) in ladder groove (17) and install and contact and the internal surface be the section of thick bamboo circle (8) of smooth surface with sealing washer (4), section of thick bamboo circle (8) cover is established on valve rod (5), one side that section of thick bamboo circle (8) deviate from connecting seat (2) is equipped with clamping ring (6) that are used for restricting section of thick bamboo circle (8) position, clamping ring (6) cover is established on valve rod (5), and clamping ring (6) are through connecting screw (7) and axle sleeve (3) fixed connection.

3. A stop valve sealing structure according to claim 1, wherein: first circle limit (10) are annular equidistance towards the one side of second circle limit (11) and have seted up the first round hole of a plurality of, second circle limit (11) are annular equidistance towards the one side of first circle limit (10) and have seted up the second round hole that a plurality of and first round hole were aligned, connecting bolt (9) run through first round hole and second round hole.

4. A stop valve sealing structure according to claim 1, wherein: two annular grooves (14) are formed in the position, in the covering range of the shaft sleeve (3), of the outer surface of the valve rod (5), and sealing rings (4) are arranged in the two annular grooves (14).

5. A stop valve sealing structure according to claim 1, wherein: the connecting seat (2) and the valve body (1) are of an integrally formed structure, the second ring edge (11) and the connecting seat (2) are of an integrally formed structure, and the first ring edge (10) and the shaft sleeve (3) are of an integrally formed structure.

6. A stop valve sealing structure according to claim 2, wherein: one side of the barrel ring (8) far away from the pressing ring (6) is provided with a second sealing washer (13), and the valve rod (5) is sleeved with the second sealing washer (13).

7. A stop valve sealing structure according to claim 2, wherein: barrel circle (8) surface mounting has spacing (20), spacing (20) and barrel circle (8) are the integrated into one piece structure, ladder groove (17) internal surface is seted up with spacing (20) matched with spacing groove (18), spacing (20) are inserted in spacing groove (18).

8. A stop valve sealing structure according to claim 2, wherein: the clamping ring (6) surface is annular equidistance and has been seted up a plurality of screw thread blind hole (19), the one side that first circle limit (10) was kept away from in axle sleeve (3) is annular equidistance and has seted up a plurality of and screw thread blind hole (19) matched with counter sink (15), connecting screw (7) pass counter sink (15) meshing in screw thread blind hole (19).

Technical Field

The invention discloses a stop valve sealing structure, and belongs to the technical field of valves.

Background

The stop valve, also called stop valve, is the most widely used valve, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is not only suitable for middle and low pressure, but also for high pressure. At present, for preventing between valve rod and the axle sleeve weeping, install the sealing washer in the crossing department of valve rod and axle sleeve usually, but the axle sleeve mostly all with the valve body be integrated into one piece structure, when the sealing washer between valve rod and axle sleeve damaged the inefficacy, need pull down the valve body from the pipeline and dismantle the valve body internals, can change the sealing washer between axle sleeve and the valve rod, change inefficiency, and waste time and energy.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a sealing structure of a stop valve, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a stop valve seal structure, includes the valve body, valve body surface fixed has the connecting seat, the one end installation detachable axle sleeve of valve body is kept away from to the connecting seat, install the valve rod in the axle sleeve, valve rod one end runs through in the connecting seat extends to the valve body, the ring channel has been seted up to the valve rod surface, install the sealing washer of laminating mutually with the axle sleeve internal surface in the ring channel, the one end surface fixed that the axle sleeve is close to the connecting seat has first round limit, the one end surface fixed that the connecting seat is close to the axle sleeve has the second round limit that has a determining deviation with first round limit, connecting bolt and second round limit fixed connection are passed through to first round limit, the annular seal groove has been seted up to the one side of connecting seat to the axle sleeve, be equipped with the first seal ring of laminating mutually with the connecting seat in the seal groove.

Further, axle sleeve internal surface processing has the ladder groove, the cartridge ring that contacts and the internal surface is the smooth surface with the sealing washer is installed to one side that is close to the connecting seat in the ladder inslot, the cartridge ring cover is established on the valve rod, one side that the cartridge ring deviates from the connecting seat is equipped with the clamping ring that is used for restricting the cartridge ring position, the clamping ring cover is established on the valve rod, and the clamping ring passes through connecting screw and axle sleeve fixed connection.

Further, first round hole that a plurality of was seted up to the one side that first circle limit was towards the second circle limit is annular equidistance, second circle limit is annular equidistance towards the one side on first circle limit and sets up the second round hole that a plurality of and first round hole were aligned, connecting bolt runs through first round hole and second round hole.

Furthermore, two annular grooves are formed in the position, in the shaft sleeve covering range, of the outer surface of the valve rod, and sealing rings are arranged in the two annular grooves.

Furthermore, the connecting seat and the valve body are of an integrally formed structure, the second ring edge and the connecting seat are of an integrally formed structure, and the first ring edge and the shaft sleeve are of an integrally formed structure.

Furthermore, one side of the cylinder ring, which is far away from the compression ring, is provided with a second sealing washer, and the second sealing washer is sleeved on the valve rod.

Further, the outer surface of the barrel ring is fixed with a limiting strip, the limiting strip and the barrel ring are of an integrally formed structure, a limiting groove matched with the limiting strip is formed in the inner surface of the stepped groove, and the limiting strip is inserted into the limiting groove.

Further, the clamping ring outer surface is annular equidistance and has been seted up a plurality of screw thread blind hole, the one side that first circle limit was kept away from to the axle sleeve is annular equidistance and has seted up a plurality of and screw thread blind hole matched with counter sink, connecting screw passes the counter sink and meshes in the screw thread blind hole.

The invention has the beneficial effects that: according to the invention, the first ring edge on the shaft sleeve and the second ring edge on the connecting seat are connected by the connecting bolt, so that the combined assembly of the shaft sleeve and the valve body is realized, when the sealing ring between the valve rod and the shaft sleeve fails, the shaft sleeve can be detached from the valve rod after the connecting bolt between the first ring edge and the second ring edge is detached, and then the failed sealing ring on the valve rod is exposed, so that the valve body does not need to be detached from a pipeline and the parts in the valve body are detached, the replacement efficiency of the sealing ring is improved, and the replacement difficulty is reduced.

According to the invention, a certain distance is reserved between the first ring edge and the second ring edge, so that when the connecting bolt cannot be disassembled due to corrosion and the like, the connecting bolt can be sawn off by utilizing the gap between the first ring edge and the second ring edge, standby disassembly is realized, and disassembly is carried out without damaging parts.

According to the invention, the cylinder ring with the smooth surface on the inner surface is inserted into the stepped groove in the shaft sleeve instead of processing the smooth surface on the inner surface of the shaft sleeve, so that the processing difficulty of the shaft sleeve is favorably reduced, the cylinder ring is pressed and held in the shaft sleeve by the pressing ring, and when the smooth surface in the cylinder ring in contact with the sealing ring is scratched, the damaged cylinder ring is replaced, so that the replacement cost is reduced, and the whole shaft sleeve does not need to be discarded.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a sealing structure of a stop valve according to the present invention;

FIG. 2 is an enlarged view of the position A in the sealing structure of the stop valve according to the present invention;

FIG. 3 is a cross-sectional view of a valve stem in a sealing structure of a shut-off valve according to the present invention;

FIG. 4 is a cross-sectional view of the bushing in the seal configuration of the stop valve of the present invention;

FIG. 5 is a top view of the bushing in the seal configuration of the shut-off valve of the present invention;

FIG. 6 is a cross-sectional view of a pressure ring in a stop valve sealing structure according to the present invention;

FIG. 7 is a perspective view of a cartridge ring in a sealing structure of a shut-off valve according to the present invention;

in the figure: 1-valve body, 2-connecting seat, 3-shaft sleeve, 4-sealing ring, 5-valve rod, 6-pressing ring, 7-connecting screw, 8-cylinder ring, 9-connecting bolt, 10-first ring edge, 11-second ring edge, 12-first sealing washer, 13-second sealing washer, 14-annular groove, 15-countersunk hole, 16-sealing groove, 17-step groove, 18-limiting groove, 19-threaded blind hole and 20-limiting strip.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a stop valve seal structure, includes valve body 1, 1 external fixed surface of valve body has connecting seat 2, the one end installation detachable axle sleeve 3 of valve body 1 is kept away from to connecting seat 2, install valve rod 5 in the axle sleeve 3, 5 one ends of valve rod run through in connecting seat 2 extends to valve body 1, establish 3 covers of axle sleeve on valve rod 5, pass connecting seat 2 with 5 one end of valve rod afterwards and extend to and be connected with the valve ball in the valve body 1, with axle sleeve 3 and 2 fixed connection of connecting seat, accomplish the assembly of valve rod 5 afterwards.

The outer surface of the valve rod 5 is provided with an annular groove 14, a sealing ring 4 which is attached to the inner surface of the shaft sleeve 3 is arranged in the annular groove 14, the sealing ring 4 is arranged in the annular groove 14, the valve rod 5 is then inserted into the shaft sleeve 3, and the sealing ring 4 is attached to the inner surface of the shaft sleeve 3 at the moment to play a role in sealing and preventing liquid leakage.

The outer surface of one end of the shaft sleeve 3, which is close to the connecting seat 2, is fixed with a first circle edge 10, the outer surface of one end of the connecting seat 2, which is close to the shaft sleeve 3, is fixed with a second circle edge 11 which has a certain distance with the first circle edge 10, the first circle edge 10 is fixedly connected with the second circle edge 11 through a connecting bolt 9, the first circle edge 10 on the shaft sleeve 3 and the second circle edge 11 on the connecting seat 2 are connected through the connecting bolt 9, so that the combined assembly of the shaft sleeve 3 and the valve body 1 is realized, when the sealing ring 4 between the valve rod 5 and the shaft sleeve 3 fails, the shaft sleeve 3 can be detached from the valve rod 5 after detaching the connecting bolt 9 between the first circle edge 10 and the second circle edge 11, and then the sealing ring 4 which fails on the valve rod 5 is exposed, the valve body 1 does not need to be detached from a pipeline and the parts in the valve body 1 are detached, the replacement efficiency of the sealing ring 4 is improved, the replacement difficulty is reduced, and a certain distance is reserved between the first circle edge 10 and the second circle edge 11, furthermore, when the connecting bolt 9 cannot be detached due to corrosion and the like, the connecting bolt 9 is sawn off by utilizing the gap between the first ring edge 10 and the second ring edge 11, so that standby detachment is realized, and detachment is performed without damaging parts.

Annular seal groove 16 has been seted up to the one side of axle sleeve 3 towards connecting seat 2, is equipped with the first seal ring 12 of laminating mutually with connecting seat 2 in the seal groove 16, utilizes connecting bolt 9 fixed connection first round limit 10 and second round limit 11 time, arranges first seal ring 12 in seal groove 16, and axle sleeve 3 finishes with connecting seat 2 is connected the back, and first seal ring 12 is in between axle sleeve 3 and connecting seat 2, improves the leakproofness between axle sleeve 3 and connecting seat 2.

As an embodiment of the present invention: 3 interior surface machining of axle sleeve has the ladder groove 17, be close to one side of connecting seat 2 in the ladder groove 17 and install the section of thick bamboo circle 8 that contacts and the internal surface is the smooth surface with sealing washer 4, 8 covers of section of thick bamboo circle are established on valve rod 5, one side that section of thick bamboo circle 8 deviates from connecting seat 2 is equipped with the clamping ring 6 that is used for restricting 8 positions of section of thick bamboo circle, 6 covers of clamping ring are established on valve rod 5, and clamping ring 6 passes through connecting screw 7 and 3 fixed connection of axle sleeve, through the section of thick bamboo circle 8 that is the smooth surface with the internal surface and assigns in the ladder groove 17 of axle sleeve 3, replace at 3 interior surface machining smooth surfaces of axle sleeve, be favorable to reducing the processing degree of difficulty of axle sleeve 3, utilize clamping ring 6 to press section of thick bamboo circle 8 to hold in axle sleeve 3, and then the smooth surface in the section of thick bamboo circle 8 that contacts with sealing washer 4 is by the fish tail, change impaired section of thick bamboo circle 8 can, reduce the replacement cost, need not abandon whole axle sleeve 3.

As an embodiment of the present invention: first circle limit 10 is the first round hole of a plurality of towards the one side of second circle limit 11 and has been seted up the annular equidistance, second circle limit 11 is the annular equidistance towards the one side of first circle limit 10 and has seted up the second round hole that a plurality of and first round hole were aligned, connecting bolt 9 runs through first round hole and second round hole, set up the first round hole of a plurality of on first circle limit 10 and set up a plurality of second round hole on second circle limit 11, be convenient for alternate connecting bolt 9 of connecting first circle limit 10 and second circle limit 11, be convenient for adopt the first circle limit of a plurality of connecting bolt 9 fixed connection 10 and second circle limit 11 simultaneously, improve the reliability that axle sleeve 3 and connecting seat 2 are connected.

As an embodiment of the present invention: two annular grooves 14 are formed in the position, in the coverage range of the shaft sleeve 3, of the outer surface of the valve rod 5, sealing rings 4 are arranged in the two annular grooves 14, the two sealing rings 4 are arranged between the valve rod 5 and the shaft sleeve 3, and the sealing performance between the valve rod 5 and the shaft sleeve 3 is further improved.

As an embodiment of the present invention: connecting seat 2 and valve body 1 are integrated into one piece structure, and second circle limit 11 and connecting seat 2 are integrated into one piece structure, and first circle limit 10 and axle sleeve 3 are integrated into one piece structure, adopt integrated into one piece structure, and the production and processing of being convenient for improves the mechanical strength of structure simultaneously.

As an embodiment of the present invention: one side that clamping ring 6 was kept away from to section of thick bamboo ring 8 is equipped with second seal ring 13, and second seal ring 13 cover is established on valve rod 5, when inserting section of thick bamboo ring 8 in ladder groove 17, earlier arrange second seal ring 13 in ladder groove 17 in, and then section of thick bamboo ring 8 is held in ladder groove 17 back by clamping ring 6 pressure, and second seal ring 13 is in by section of thick bamboo ring 8 extrusion state to improve the leakproofness between section of thick bamboo ring 8 and the axle sleeve 3.

As an embodiment of the present invention: 8 external surface of barrel ring is fixed with spacing 20, and spacing 20 and barrel ring 8 are integrated into one piece structure, and ladder inslot 17 internal surface is seted up with spacing 20 matched with spacing groove 18, and spacing 20 is arranged and is inserted in spacing groove 18, when arranging barrel ring 8 in ladder inslot 17, makes spacing 20 arrange and inserts in spacing groove 18 to under the effect of spacing 20 restriction, prevent barrel ring 8 at will at 3 rotations of axle sleeve.

As an embodiment of the present invention: the outer surface of the pressure ring 6 is in the shape of a ring at an equal distance and is provided with a plurality of threaded blind holes 19, one surface of the shaft sleeve 3, which is far away from the first ring edge 10, is in the shape of a ring at an equal distance and is provided with a plurality of countersunk holes 15 matched with the threaded blind holes 19, the connecting screw 7 penetrates through the countersunk holes 15 to be meshed in the threaded blind holes 19, the pressure ring 6 is installed in the stepped groove 17, the position of the pressure ring 6 is adjusted, the threaded hole in the pressure ring 6 is aligned with the countersunk hole 15 in the shaft sleeve 3, the connecting screw 7 penetrates through the countersunk hole 15 to be screwed into the threaded blind holes 19, and the pressure ring 6 is fixedly connected with the shaft sleeve 3.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.