CN219119958U - Zero leakage valve clack with strong sealing performance and stop valve with valve clack - Google Patents

Abstract

The application discloses valve clack and have stop valve of this valve clack that zero leakage leakproofness is strong, including the valve clack body, the bottom end face of valve clack body is sealed face, be suitable for the installation sealing gasket on the sealed face, be equipped with the boss on the sealed face, the sealing gasket is suitable for cup jointing on the boss. This application has adopted the technical means that sets up the boss on sealed face, compares among the traditional technical scheme, and sealed pad cup joints directly on the double-screw bolt, because the boss is big than the double-screw bolt diameter, so the sealed face that the sealed pad needs to be sealed is littleer, and consequently sealed effect of sealed pad is better, and the required material of preparation sealed pad is also less, and the cost is lower to owing to add rigid boss, the overall physical properties of valve clack is also better.

Description

Zero leakage valve clack with strong sealing performance and stop valve with valve clack

Technical Field

The application relates to the technical field of valves, in particular to a valve clack with high zero leakage tightness and a stop valve with the valve clack.

Background

The valve is a pipeline accessory for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, and a general valve structure comprises a valve body, a valve rod, a valve clack, a bracket, a valve rod driving mechanism, a filler and other parts.

However, the valve flaps in the existing valves have the following drawbacks: the sealing effect of the sealing gasket directly arranged on the valve clack is poor, and especially in order to meet the actual demands, the sealing surfaces of certain valve clacks are arranged to be larger, the sealing effect is poor due to the fact that the sealing gasket is directly arranged, and the sealing gasket is produced by too much materials and is high in cost.

Disclosure of Invention

The purpose of this application is to provide a leakproofness is good, reduces the zero leakage leakproofness strong valve clack of cost of manufacture.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: the utility model provides a valve clack that zero leakage leakproofness is strong, includes the valve clack body, the bottom end face of valve clack body is sealed face, be suitable for the installation sealing washer on the sealed face, be equipped with the boss on the sealed face, the sealing washer is suitable for cup jointing on the boss.

Preferably, the boss is provided with a stud, the stud is suitable for being provided with a nut, and the nut is suitable for clamping the sealing gasket. The above structure is used for limiting the gasket.

As another preferable mode, a pin hole is formed in the stud, the pin hole is located below the nut in a screwed state, and the pin hole is suitable for a positioning piece to pass through, so that the nut is limited from falling off. The structure is used for preventing the nut from falling off.

Further preferably, the bottom end surface of the gasket is adapted to reach or exceed the bottom end surface of the boss. The above structure reliably ensures the effect of compaction.

Further preferably, a limiting gasket is arranged between the nut and the sealing gasket, and the side wall of the limiting gasket exceeds the side wall of the boss. The structure reliably ensures that the limit gasket can contact the sealing gasket so as to be pressed.

Further preferably, a positioning groove is formed on the sealing surface, and the sealing gasket is suitable for being installed in the positioning groove. The above structure is used for increasing the sealing performance.

Further preferably, a valve rod connecting structure is arranged at the top end of the valve clack body, and a clamping groove with an L-shaped structure with a concave section is arranged on the outer wall of the valve rod connecting structure. The structure is used for enhancing the connection stability of the valve rod and the valve clack.

Further preferably, the positioning member is a cotter pin.

The application also provides a stop valve comprising the valve clack.

Compared with the prior art, the beneficial effect of this application lies in:

this application has adopted the technical means that sets up the boss on sealed face, compares among the traditional technical scheme, and sealed pad cup joints directly on the double-screw bolt, because the boss is big than the double-screw bolt diameter, so the sealed face that the sealed pad needs to be sealed is littleer, and consequently sealed effect of sealed pad is better, and the required material of preparation sealed pad is also less, and the cost is lower to owing to add rigid boss, the overall physical properties of valve clack is also better.

Drawings

Fig. 1 is a schematic structural view of a valve flap in a conventional technical scheme;

FIG. 2 is a schematic structural view of a valve flap of the present application;

FIG. 3 is an exploded view of the valve flap of the present application;

FIG. 4 is a schematic view of another angle of the valve flap of the present application;

FIG. 5 is a cross-sectional view of a valve flap of the present application;

FIG. 6 is a schematic structural view of a valve flap body in a valve flap of the present application;

in the figure: 1. a valve flap body; 2. sealing surfaces; 21. a positioning groove; 3. a boss; 4. a stud; 41. a pin hole; 5. a nut; 6. a sealing gasket; 7. a limiting gasket; 8. a valve stem connection structure; 81. a clamping groove.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, in the conventional technical solution, the sealing gasket 6 is directly sleeved on the stud 4, that is, the sealing gasket 6 is to seal the space between the stud 4 and the side wall of the valve clack, and the stud 4 is generally produced according to the national standard, so that the diameter of the stud is generally not changed well, but in order to adapt to the actual requirement, a part of the valve clack is provided, and the bottom surface of the valve clack is larger, if the valve clack is still directly sleeved on the stud 4 in a conventional sealing manner, the sealing surface 2 is required to be too large, so that the material required for manufacturing the sealing gasket 6 is increased, the cost is increased, and more importantly, the sealing effect is easily affected.

As an improvement, as shown in fig. 2-6, the preferred embodiments of the present application are:

the utility model provides a valve clack that zero leakage leakproofness is strong, includes valve clack body 1, and the bottom end face of valve clack body 1 is sealed face 2, is suitable for installing sealed pad 6 on the sealed face 2, is equipped with boss 3 on the sealed face 2, and sealed pad 6 is suitable for cup jointing on boss 3.

Unlike the conventional art, in the valve clack of the present application, the boss 3 is provided on the sealing surface 2, the gasket 6 is sleeved on the boss 3, and the diameter of the boss 3 is larger than that of the stud 4, so that the surface to be sealed by the gasket 6 is small, the material used for manufacturing the gasket 6 is reduced, and the sealing effect is also reliably ensured.

Further, in the present embodiment, the boss 3 is provided with a stud 4, the stud 4 is adapted to be mounted with a nut 5, and the nut 5 is adapted to clamp a gasket 6. As in the conventional technical solution, the stud 4 and the nut 5 are still required, but unlike the stud 4 in the present application is mounted on the boss 3 and is not in direct contact with the gasket 6, so that the stud 4 can still adopt the previous specifications, and the manufacturing process does not need to be modified, thereby being more convenient.

Further, the inventor of the present application has found that, during use, the nut 5 is easy to loosen and fall off, the sealing gasket 6 is mainly fixed by the nut 5, the nut 5 falls off, and the sealing effect of the sealing gasket 6 cannot be ensured, so, in order to solve the above technical problem, as shown in fig. 5 and 6, in this embodiment, the stud 4 is provided with a pin hole 41, the pin hole 41 is located below the nut 5 in a screwed state, and the pin hole 41 is suitable for passing through the positioning member, thereby limiting the falling off of the nut 5. The structure is practical and stable.

In the selection of locating piece, in this implementation, adopt the cotter pin, convenient to use, easy dismounting to fixed effect is good. Of course, other pin-like parts such as dowel pins and other kinds of parts that can be used for fixation can be used.

Furthermore, in order to achieve an effective clamping of the nut 5 to the gasket 6, as shown in fig. 5, in the present embodiment, the bottom end face of the gasket 6 is adapted to exceed the bottom end face of the boss 3. Specifically, the thickness of the sealing gasket 6 is greater than that of the boss 3, so that the sealing gasket 6 protrudes relative to the boss 3, and the sealing gasket 6 is generally made of soft materials, so that when the nut 5 is screwed, the sealing gasket 6 is deformed to a certain extent, and the sealing gasket 6 is reliably clamped.

Further, if the nut 5 is directly adopted to contact with the sealing gasket 6, due to the existence of the boss 3, the outer diameter of the nut 5 is larger than the diameter of the boss 3, the inner diameter of the nut 5 is matched with the stud 4, and both the nut 5 and the stud 4 can cause increased difficulty in manufacturing and use, therefore, in the embodiment, a limiting gasket 7 is arranged between the nut 5 and the sealing gasket 6, the side wall of the limiting gasket 7 exceeds the side wall of the boss 3, and the limiting gasket 7 exceeds the side edge of the boss 3, so that the sealing gasket 6 is arranged on the sealing gasket 6, and therefore the limiting gasket 7 is clamped, and the sealing gasket 6 can be clamped through the limiting gasket 7 very conveniently.

As shown in fig. 6, in this embodiment, the sealing surface 2 is provided with a positioning groove 21, the sealing gasket 6 is suitable for being installed in the positioning groove 21, that is, the position contacting with the sealing gasket 6 is set to be a concave structure, and the sealing gasket 6 is semi-embedded installed in the positioning groove 21, so that not only the strength of the valve clack body 1 is utilized, but also the soft sealing characteristic of the sealing gasket 6 can be utilized, therefore, the sealing gasket has the advantages of long service life and good sealing effect, in addition, the sealing gasket 6 is embedded into the positioning groove 21, and the sealing gasket 6 can be conveniently heated and expanded to be shaped.

In addition, as shown in fig. 4 and 6, in the present embodiment, the valve stem connection structure 8 is provided at the top end of the valve flap body 1, and the locking groove 81 having an L-shaped structure with a concave cross section is provided on the outer wall of the valve stem connection structure 8.

In practical installation, the valve rod head is generally inserted into a multi-stage hole in the valve rod connecting structure 8 and is fixed by a split snap ring, a tightening nut and other accessories, and in order to ensure the stability of the tightening nut, a nut lock plate is further arranged on the tightening nut, but the inventor finds that the nut lock plate is loose in the use process, so that a clamping groove 81 shown in fig. 4 is arranged on the outer wall, and when the nut lock plate is covered, a small piece on the nut lock plate can be bent and inserted into the clamping groove 81, thereby playing a role of limiting the rotation of the nut lock plate so as to fix the tightening nut.

The application also provides a stop valve, comprising the valve clack.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides a valve clack is strong to zero leakage leakproofness, includes the valve clack body, the bottom end face of valve clack body is sealed face, be suitable for the installation sealing gasket on the sealed face, its characterized in that: the sealing surface is provided with a boss, and the sealing gasket is suitable for being sleeved on the boss.

2. The zero-leakage high-tightness valve flap of claim 1, wherein: the boss is provided with a stud, the stud is suitable for being provided with a nut, and the nut is suitable for clamping the sealing gasket.

3. A zero-leakage high-tightness valve flap as defined in claim 2, wherein: the screw bolt is provided with a pin hole, the pin hole is positioned below the nut in a screwed state, and the pin hole is suitable for a positioning piece to pass through, so that the nut is limited to fall off.

4. A zero-leakage high-tightness valve flap as defined in claim 2, wherein: the bottom end surface of the gasket is adapted to reach or exceed the bottom end surface of the boss.

5. A zero-leakage high-tightness valve flap as defined in claim 2, wherein: and a limiting gasket is arranged between the nut and the sealing gasket, and the side wall of the limiting gasket exceeds the side wall of the boss.

6. The zero-leakage high-tightness valve flap of claim 1, wherein: the sealing surface is provided with a positioning groove, and the sealing gasket is suitable for being installed in the positioning groove.

7. The zero-leakage high-tightness valve flap of claim 1, wherein: the top of valve clack body is equipped with valve rod connection structure, be equipped with the draw-in groove of L type structure that the cross-section is interior concave on valve rod connection structure's the outer wall.

8. A zero-leakage high-tightness valve flap as defined in claim 3, wherein: the locating piece is a cotter pin.

9. A shut-off valve, characterized in that: comprising a valve flap according to any of claims 1-8.

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