CN220540442U - Self-adaptive sealing valve rod assembly - Google Patents

Abstract

The utility model discloses a self-adaptive sealing valve rod assembly, which comprises a rod sleeve, wherein the upper end of the rod sleeve is provided with a rotary table for driving the valve rod assembly to integrally rotate, the lower end of the rod sleeve is provided with an anti-vibration sealing assembly, and the interior of the anti-vibration sealing assembly is provided with a valve sealing assembly; the utility model has simple structure and reasonable design, avoids waste caused by the fact that liquid in the pipeline continuously seeps out through the damaged valve body, completely plugs the stop valve body and the front liquid inlet pipeline at the flange, is convenient for replacing the damaged valve body, prevents the fluid in the liquid inlet pipeline from flowing out in the replacing process, avoids adverse effects on the production living environment, saves the replacing cost, meets the current production and actual use requirements, simultaneously realizes the protection of the fragile valve rod assembly in the stop valve body, and avoids adverse effects on the sealing performance of the valve rod assembly caused by artificial or non-artificial impact in the daily use process.

Description

Self-adaptive sealing valve rod assembly

Technical Field

The utility model relates to the technical field of valve sealing equipment, in particular to a self-adaptive sealing valve rod assembly.

Background

The valve is an indispensable component in industrial process control, can control the flow of fluid by opening, closing or adjusting the valve, plays a vital role in the fields of petroleum, chemical industry, electric power, metallurgy and the like, has various types, and is widely applied to various industrial processes because the stop valve has excellent sealing performance and stable working performance under high-temperature and high-pressure environments.

The prior art has the following defects:

the sealing principle of the conventional stop valve mainly utilizes the tight contact of a sealing element and a liquid inlet channel in the valve body to realize sealing, and drives the sealing element to lift through a valve rod so as to realize opening and closing of the valve, but in a certain earthquake frequent area, a high-temperature high-pressure environment, a high-strength vibration environment and an environment containing corrosive media, the valve can be affected by vibration, impact, aging and the like, so that the valve body is damaged and leaked, after the valve body is damaged and leaked, the front end and the rear end of the valve body are difficult to repair or seal quickly and effectively due to the conventional means, the corresponding secondary sealing device is not generally arranged in the front end and the rear end of the valve body, and even if the main valve is closed, the maintenance can only be carried out by completely leaking the liquid in the pipeline, so that a large amount of liquid loss and waste are generated, even part of special liquid can pollute the production living environment, and therefore the conventional valve rod is difficult to meet the production and practical use requirements of the current stop valve.

Disclosure of Invention

The present utility model is directed to an adaptive sealing valve stem assembly that solves the problems set forth in the background art described above.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the self-adaptive sealing valve rod assembly comprises a rod sleeve, wherein the upper end of the rod sleeve is provided with a rotary table for driving the valve rod assembly to integrally rotate, the lower end of the rod sleeve is provided with an anti-vibration sealing assembly, and the interior of the anti-vibration sealing assembly is provided with a valve sealing assembly;

the valve sealing assembly comprises:

the threaded rod is movably arranged in the through hole of the rod sleeve, the threaded rod is in threaded connection with the internal thread at the lower end of the rod sleeve, and the upper end of the threaded rod is provided with a hexagon head;

the soft connecting rod is connected to the lower end of the threaded rod, and the lower end of the soft connecting rod is connected with a piston for sealing the valve;

the connecting blocks are symmetrically arranged on the mounting seats at the upper end of the piston.

Preferably, the anti-seismic sealing assembly comprises:

the upper U-shaped ring is symmetrically arranged on the lower end face of the rod sleeve, the lower end of the upper U-shaped ring is movably connected with the lower U-shaped ring, and the upper U-shaped ring and the lower U-shaped ring are buckled pairwise;

the screw sleeve is arranged at the lower end of the lower U-shaped ring, the inside of the screw sleeve is in sliding connection with the threaded rod and the soft connecting rod through a through hole, the lower end of the screw sleeve is connected with the connecting block through a hole, and a groove matched with the convex ring on the connecting block is formed in the hole wall of the hole at the lower end of the screw sleeve;

the buffer spring is arranged at the upper end of the lower U-shaped ring, and the upper end of the buffer spring is connected with the lower end face of the rod sleeve.

Preferably, the soft connecting rod is a universal flexible shaft.

Preferably, the connection block is made of a hard rubber material.

Preferably, the highest point of the hex head is lower than the highest point of the sleeve.

Preferably, a sealing ring is arranged between the lower end of the threaded sleeve and the mounting seat at the upper end of the piston.

Preferably, a limiting ring is arranged at the lower end of the threaded sleeve.

Compared with the prior art, the utility model has the beneficial effects that:

the self-adaptive sealing valve rod assembly is provided with the sealing valve assembly, the sealing valve assembly comprises a threaded rod, a hexagon head, a soft connecting rod, a piston and a connecting block, so that the valve body and a liquid inlet pipeline are completely plugged after the stop valve body is damaged, waste caused by continuous seepage of liquid in the pipeline through the damaged valve body is avoided, the stop valve body and the front liquid inlet pipeline are completely plugged at a flange, the replacement of the valve body is convenient to damage, fluid in the liquid inlet pipeline cannot flow out in the replacement process, adverse influence on the production and living environment is avoided, the replacement cost is saved, and the current production and actual use requirements are met;

this self-adaptation seals valve rod subassembly, through being provided with antidetonation seal assembly, antidetonation seal assembly is including last U type ring, lower U type ring, thread bush and buffer spring, has realized the protection to the inside fragile valve rod subassembly of stop valve body, has avoided producing adverse effect to valve rod subassembly's leakproofness at the manual or non-artificial striking in daily use, has improved valve rod subassembly's whole life.

Drawings

FIG. 1 is an overall front view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic illustration of a valve stem assembly shutoff broken valve body of the present utility model;

FIG. 4 is a schematic side view of a shock resistant seal assembly of the present utility model;

FIG. 5 is an enlarged schematic view of FIG. 2 at A in accordance with the present utility model;

FIG. 6 is an enlarged schematic view of FIG. 2 at B in accordance with the present utility model;

fig. 7 is an enlarged schematic view of fig. 2 at C in accordance with the present utility model.

In the figure: 1. a rod sleeve; 2. a turntable; 3. an anti-shock seal assembly; 301. a U-shaped ring is arranged; 302. a lower U-shaped ring; 303. a thread sleeve; 3031. a limiting ring; 304. a buffer spring; 4. a valve sealing assembly; 401. a threaded rod; 402. a hexagonal head; 403. a flexible connecting rod; 404. a piston; 405. a connecting block; 5. a seal ring; 6. hexagonal socket wrench.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a number" is two or more, unless explicitly defined otherwise.

Examples

Referring to fig. 1-7, the present utility model provides a technical solution for a self-adaptive sealing valve rod assembly: the self-adaptive sealing valve rod assembly comprises a rod sleeve 1, wherein a turntable 2 for driving the valve rod assembly to integrally rotate is arranged at the upper end of the rod sleeve 1, a shock-resistant sealing assembly 3 is arranged at the lower end of the rod sleeve 1, and a sealing valve assembly 4 is arranged in the shock-resistant sealing assembly 3; the valve sealing component 4 comprises a threaded rod 401, a soft connecting rod 403 and a connecting block 405, wherein the threaded rod 401 is movably arranged in a through hole of the rod sleeve 1, the threaded rod 401 is in threaded connection with an internal thread at the lower end of the rod sleeve 1, a hexagonal head 402 for rotating the threaded rod 401 is arranged at the upper end of the threaded rod 401, the soft connecting rod 403 is connected at the lower end of the threaded rod 401, a piston 404 for sealing a valve is connected at the lower end of the soft connecting rod 403, the connecting block 405 is symmetrically arranged on a mounting seat at the upper end of the piston 404, when a valve body of the stop valve is damaged due to severe vibration in the external environment, the valve body is leaked, the total valve is closed firstly, then the anti-vibration sealing component 3 is driven to a sealing part, then the hexagonal head 402 is sleeved with a hexagonal socket wrench 6 and rotated, so that the threaded rod 401 is driven to rotate, the soft connecting rod 403 and the piston 404 below are subjected to certain downward pressure along with the rotation of the threaded rod 401, the lower pressure is gradually increased along with the rotation of the hexagonal socket wrench 6 until the connecting block 405 gets rid of the constraint of the anti-vibration sealing assembly 3, then the hexagonal socket wrench 6 is continuously rotated to drive the soft connecting rod 403 and the piston 404 to move downwards along the liquid inlet channel below the stop valve body until the piston 404 moves to the stop valve flange, at this time, complete blocking of the stop valve body and the front liquid inlet pipeline is realized, the valve body stops leaking, when the stop valve needs to be replaced, the damaged stop valve is firstly detached at the flange, then the hexagonal socket wrench is continuously rotated, the threaded rod 401 is completely separated from the threads on the inner wall of the rod sleeve 1, at this time, the stop valve body can be removed, the sealing valve assembly 4 is left in the liquid inlet pipeline to be continuously blocked, when the new stop valve body is sleeved on the sealing valve assembly 4, after the connection of the flanges is completed at two sides, the hexagonal socket wrench 6 is used to pass through the rod sleeve 1 again to reverse the hexagonal head 402 to drive the piston 404 to be recovered, until connecting block 405 and antidetonation seal assembly 3 are fixed again, through sealing valve assembly 4, realized stopping valve body damaged back to valve body and feed liquor pipeline's shutoff completely, avoided the liquid in the pipeline to continue to ooze through the damaged valve body and produce extravagant, and will stop valve body and front end feed liquor pipeline shutoff completely in flange department, the change of conveniently damaging the valve body, the fluid in the feed liquor pipeline also can not flow out in the change process, avoided producing adverse effect to the production living environment, practiced thrift the replacement cost, more accord with current production and in-service use demand.

The shock-resistant sealing assembly 3 comprises an upper U-shaped ring 301, a threaded sleeve 303 and a buffer spring 304, wherein the upper U-shaped ring 301 is symmetrically welded on the lower end face of the rod sleeve 1, the lower end of the upper U-shaped ring 301 is movably connected with a lower U-shaped ring 302, the upper U-shaped ring 301 and the lower U-shaped ring 302 are buckled in pairs, the threaded sleeve 303 is welded at the lower end of the lower U-shaped ring 302, the inside of the valve body is controlled to be opened and closed through the cooperation between the threaded sleeve 303 and the internal threads of the valve body, the inside of the threaded sleeve 303 is connected with the 401 and the soft connecting rod 403 in a sliding manner through a through hole, the lower end of the threaded sleeve 303 is connected with the connecting block 405 through a hole, a groove matched with a convex ring on the connecting block 405 is formed in the hole wall of the lower end of the threaded sleeve 303, the buffer spring 304 is arranged at the upper end of the lower U-shaped ring 302, the upper end of the buffer spring 304 is connected with the lower end face of the rod sleeve 1, when the valve is required to be adjusted to be closed and in an open state, the rotary table 2 drives the rod sleeve 1 to rotate, the rod sleeve 1 is driven by the rotary table, the rod sleeve 1 is driven by the upper U-shaped ring 301 and the lower U-shaped ring 302 to be opened through the cooperation between the threads, the threaded sleeve 303 and the internal threads of the valve body is driven by the valve body, the threaded sleeve 303 is not to be directly influenced by the piston assembly, the piston is prevented from being in the normal operation, the normal operation is avoided, and the piston is not influenced by the whole process is avoided, and the piston is in the valve body is in the process, and the valve body is directly has the normal operation has been opened, and the valve has been and the influence and the valve has the piston has been directly has been used.

The flexible connecting rod 403 is a universal flexible shaft, and the universal flexible shaft can be bent and rotated, and can ensure certain hardness during bending, so that the flexible shaft is more suitable for the current use situation.

The connecting block 405 is made of a hard rubber material, and the hard rubber has enough connection strength, and can be deformed to a certain extent, so that the connecting block 405 is convenient to separate from the threaded sleeve 303.

The highest point of the hex head 402 is lower than the highest point of the sleeve 1 and the hex head 402 is located within a through hole in the sleeve 1 to provide adequate protection for the hex head 402 when not in use.

A sealing ring 5 is arranged between the lower end of the threaded sleeve 303 and the mounting seat at the upper end of the piston 404, and the sealing ring 5 can prevent liquid in the valve body from seeping out through the joint between the threaded sleeve 303 and the piston 404.

The lower end of the threaded sleeve 303 is provided with a limit ring 3031, and the limit ring 3031 can limit the up-and-down travel of the threaded sleeve 303 so as to prevent the threaded sleeve 303 from being separated from the internal thread on the valve body due to excessive upward movement.

The working principle of the utility model is as follows:

when the self-adaptive sealing valve rod assembly is used, if the valve body of the stop valve is damaged due to severe vibration in the external environment and leakage of the valve body occurs, the main valve is closed firstly, then the rotary table 2 is rotated, the rotary table 2 drives the rod sleeve 1 to rotate, the rod sleeve 1 drives the threaded sleeve 303 to rotate through the upper U-shaped ring 301 and the lower U-shaped ring 302 below, so that the threaded sleeve 303 descends in the stop valve body, the piston 404 and a liquid inlet channel in the valve body are controlled to be closed, then the hexagonal socket wrench 6 is sleeved on the hexagonal head 402 and rotated, the threaded rod 401 is driven to rotate, the lower soft connecting rod 403 and the piston 404 are subjected to certain downward pressure along with the rotation of the threaded rod 401, the downward pressure is gradually increased along with the rotation of the hexagonal socket wrench 6 until the connecting block 405 gets rid of the constraint of a hole at the lower end of the threaded sleeve 303, then continue to rotate the hexagonal socket wrench 6 to drive the soft connecting rod 403 and the piston 404 to move downwards along the liquid inlet channel below the stop valve body until the piston 404 moves to the stop valve flange, at this time, complete blocking of the stop valve body and the front liquid inlet pipeline is achieved, the valve body stops leaking, when the stop valve needs to be replaced, the broken stop valve is detached at the flange, then continue to rotate the hexagonal socket wrench to enable the threaded rod 401 to be completely separated from the threads on the inner wall of the rod sleeve 1, at this time, the stop valve body can be removed, the sealing valve component 4 remains in the liquid inlet pipeline to continue blocking, when the new stop valve body is sleeved on the sealing valve component 4 after the flange connection on two sides is completed, the hexagonal socket wrench 6 is used to reversely rotate the hexagonal head 402 again through the rod sleeve 1 to drive the piston 404 to recover until the connecting block 405 reenters the hole at the lower end of the threaded sleeve 303 and is fixed, at this time, the replacement of the stop valve body is completed, if the upper part of the rod sleeve 1 is impacted by external force in the working process of the valve, the buffer spring 304 can play a better role in buffering, so that the impact force is prevented from directly acting on the fragile threaded sleeve 303 and the piston 404; the utility model has simple structure and reasonable design, realizes the complete blocking of the valve body and the liquid inlet pipeline after the stop valve body is damaged, avoids the waste caused by the fact that liquid in the pipeline continuously seeps out through the damaged valve body, completely blocks the stop valve body and the front liquid inlet pipeline at the flange, facilitates the replacement of the damaged valve body, prevents the fluid in the liquid inlet pipeline from flowing out in the replacement process, avoids the adverse effect on the production and living environment, saves the replacement cost, meets the current production and actual use requirements better, and simultaneously realizes the protection of the fragile valve rod assembly in the stop valve body through the anti-vibration sealing assembly 3, avoids the adverse effect on the sealing performance of the valve rod assembly caused by artificial or non-artificial impact in the daily use process, and prolongs the whole service life of the valve rod assembly.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. An adaptive sealing valve rod assembly, comprising a rod sleeve (1), characterized in that: the anti-vibration valve is characterized in that a turntable (2) for driving the valve rod assembly to integrally rotate is arranged at the upper end of the rod sleeve (1), an anti-vibration sealing assembly (3) is arranged at the lower end of the rod sleeve (1), and a valve sealing assembly (4) is arranged in the anti-vibration sealing assembly (3);

the valve sealing assembly (4) comprises:

the threaded rod (401) is movably arranged in the through hole of the rod sleeve (1), the threaded rod (401) is in threaded connection with the internal thread at the lower end of the rod sleeve (1), and a hexagonal head (402) is arranged at the upper end of the threaded rod (401);

a soft connecting rod (403), wherein the soft connecting rod (403) is connected to the lower end of the threaded rod (401), and the lower end of the soft connecting rod (403) is connected with a piston (404) for sealing the valve;

the connecting blocks (405), the connecting blocks (405) are symmetrically arranged on the mounting seats at the upper ends of the pistons (404).

2. The adaptive sealing valve stem assembly of claim 1, wherein: the anti-seismic sealing assembly (3) comprises:

the upper U-shaped ring (301), the upper U-shaped ring (301) is symmetrically arranged on the lower end face of the rod sleeve (1), the lower end of the upper U-shaped ring (301) is movably connected with a lower U-shaped ring (302), and the upper U-shaped ring (301) and the lower U-shaped ring (302) are buckled in pairs;

the screw sleeve (303) is arranged at the lower end of the lower U-shaped ring (302), the inside of the screw sleeve (303) is in sliding connection with the threaded rod (401) and the soft connecting rod (403) through a through hole, the lower end of the screw sleeve (303) is connected with the connecting block (405) through a hole, and a groove matched with the convex ring on the connecting block (405) is formed in the hole wall of the hole at the lower end of the screw sleeve (303);

the buffer spring (304), buffer spring (304) set up the upper end of lower U type ring (302), the upper end of buffer spring (304) is connected with the lower terminal surface of pole cover (1).

3. The adaptive sealing valve stem assembly of claim 1, wherein: the soft connecting rod (403) is a universal flexible shaft.

4. The adaptive sealing valve stem assembly of claim 1, wherein: the connection block (405) is made of a hard rubber material.

5. The adaptive sealing valve stem assembly of claim 1, wherein: the highest point of the hexagonal head (402) is lower than the highest point of the sleeve (1).

6. The adaptive sealing valve stem assembly of claim 2, wherein: a sealing ring (5) is arranged between the lower end of the threaded sleeve (303) and the mounting seat at the upper end of the piston (404).

7. The adaptive sealing valve stem assembly of claim 2, wherein: the lower end of the thread sleeve (303) is provided with a limiting ring (3031).